WO2008044754A1 - Prophylactic or therapeutic agent for cancer - Google Patents
Prophylactic or therapeutic agent for cancer Download PDFInfo
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- WO2008044754A1 WO2008044754A1 PCT/JP2007/069908 JP2007069908W WO2008044754A1 WO 2008044754 A1 WO2008044754 A1 WO 2008044754A1 JP 2007069908 W JP2007069908 W JP 2007069908W WO 2008044754 A1 WO2008044754 A1 WO 2008044754A1
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- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
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- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
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- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
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- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
- C07K16/3069—Reproductive system, e.g. ovaria, uterus, testes, prostate
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- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/10—Cells modified by introduction of foreign genetic material
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues
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- C07K2317/56—Immunoglobulins specific features characterized by immunoglobulin fragments variable (Fv) region, i.e. VH and/or VL
- C07K2317/565—Complementarity determining region [CDR]
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- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
- C07K2317/732—Antibody-dependent cellular cytotoxicity [ADCC]
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- C07K2319/00—Fusion polypeptide
- C07K2319/30—Non-immunoglobulin-derived peptide or protein having an immunoglobulin constant or Fc region, or a fragment thereof, attached thereto
Definitions
- the present invention relates to a monoclonal antibody against Nectin-2 and its use, specifically, cancer preventive / therapeutic agent or diagnostic agent, cancer cell apoptosis promoter, cancer cell growth inhibitor, and Fc region of antibody.
- the present invention relates to cancer cell damaging agents that utilize biological defense mechanisms.
- Nectin-2 gene (RefSeq Accession No. NM_002856) and Nectin-2 ⁇ gene (EMBL Accession No. X80038) are genes cloned from cDNA derived from human leukemia cell line TF-1, each of which has 479 amino acids. It encodes a protein consisting of acids and 538 amino acids (RefSeq Accession No. NP_002847 and EMBL Accession No. CAA 5 6342).
- Nectin-2 ⁇ gene is a splicing variant of Nectin-2 ⁇ gene, and the protein encoded by Nectin-2 ⁇ gene is It has an amino acid sequence corresponding to the 1st to 350th amino acid sequences of the protein encoded by Nectin-2 gene, but the amino acid sequence on the C-terminal side is different from the 351st.
- mouse genes (GenBank Accession No. BC009088 and RefSeq Accession No. NM_008990) showing homology to the Nectin-2 gene and Nectin-2 ⁇ gene have been cloned from a library derived from mouse ES cells. Each encodes a protein consisting of 467 amino acids and 530 amino acids (GenBank Accession No.
- Nectin-2 genes have about 72% and about 72% homology with the human Nectin-2 ⁇ and Nectin-2S genes, respectively, and about 69% and about 73% homology with the amino acid sequences, respectively.
- Nectin-2 ⁇ and Nectin-2 ⁇ are protein molecules with synonyms such as PVRL2, PRR2, PVRR2, HveB, and CD112.
- Nectin The Nectin family is one (hereinafter sometimes referred to as Nectin).
- Necl-1, Necl-2, Necl-3, Necl-4 and Necl_5 are known as membrane proteins having a Nectin-like structure (J. Biol. Chem. (2004), 279 (17), pl8015_pl8025) .
- Nectin belongs to the immune globulin superfamily and is a single transmembrane glycoprotein with three immunoglobulin-like loops in the extracellular domain. Nectin molecules form cis dimers on the cell membrane, and trans bonds between cis dimers on the cell membranes of adjacent cells, allowing epithelial cells to interact with each other in a manner independent of Ca 2+ concentration. Alternatively, it is thought to regulate cell-cell adhesion between Sertoli cells and sperm cells (Protein Nucleic Acid Enzyme (2003), 48 (2), ⁇ 105- ⁇ 12; Curr. Biol.
- Nectin-1 and Nectin-3 have also been reported to be involved in neuronal synapse formation via trans-conjugation (J. Cell Biol. (2002), 156, p555-p565).
- Nectin trans-bonds are formed homophilically between the same molecules, but Nectin-1 and Nectin-3, Nectin-1 and Nectin-4, Nectin-2 and Nectin-3, Nectin-3 and Necl- It is known that a heterophilic trans bond is also formed as in (J. Biol. Chem. (2002), 277 (30), p27006-p27013).
- Nectin binds to alpha-adein at the C-terminal region in the cell, and through this molecule, it binds to the actin cytoskeleton. It is known to link (J. Cell Sci. (2003), 116 (1), pl7-p27).
- Nectin-1 acts as a receptor for glycoprotein D expressed on herpesvirus and functions as a scaffold when herpesvirus enters cells.
- Nectin-2 is one of the ligands of DNAM-1 (CD226) expressed on natural killer cells.Natural killer cells expressing DNAM-1 are cells using Nectin-2 expressed on target cells as a scaffold. It is thought to exert toxic activity (J. Exp. Med. (2003), 198 (4), ⁇ 557 - ⁇ 567 ).
- Nectin-2 is one of the genes involved in the tumor suppressor gene p53 pathway (W0 02/99040), a protein useful for the treatment of angiogenic diseases, cancer, and viral infections. W0 02/28902), receptors involved in viral infection (W0 99/63063), one of the genes useful for diagnosis and treatment of breast and ovarian cancer (W0 02/00677), One of 16 genes that are up-regulated in various cancers and promising as a target for anti-tumor antibody drugs (W0 03/088808), and up-regulated in cancer tissues, promising for cancer diagnosis and prevention It is reported as one of the most important genes (W0 04/030615).
- the Nectin-2 gene was found as a gene whose expression is markedly increased in cancer tissues, and it has been reported that antisense oligonucleotides of this gene promote apoptosis of cancer cells (WO 2 0 0 5 Z 0 9 7 2 0 4).
- the present inventors have found the Nectin-2 gene as a gene whose expression is markedly increased in cancer tissues, and an antisense oligonucleotide of this gene is used in cancer cells.
- the present inventors have succeeded in producing a monoclonal antibody against Nectin-2 and found that the monoclonal antibody has excellent cancer cell proliferation inhibitory activity and the like.
- the present inventors have completed the present invention. That is, the present invention
- a protein or protein containing an amino acid sequence identical or substantially identical to the amino acid sequence represented by SEQ ID NO: 1 (Nectin-2 ⁇ ) or SEQ ID NO: 3 (Nectin-2 ⁇ ) A monoclonal antibody against the partial peptide or salt thereof,
- [1 1] represented by SEQ ID NO: 1 (Nectin-2 ⁇ ) or SEQ ID NO: 3 (Nectin-2 ⁇ )
- SEQ ID NO: 1 Nectin-2 ⁇
- SEQ ID NO: 3 Nectin-2 ⁇
- the above-mentioned monoclonal antibody that recognizes an epitope present in the amino acid sequence of amino acids 47-i42 (first IG-like domain) or 175-240 (second IG-like domain) amino acid sequence [1] The described antibodies,
- N ec 1— 803— 2 (F ERM BP— 1 04 1 7), N ec 1-244-3 (F ERM BP— 1 0423), Ne cl— 5 30— l (F ERM B P_ 1 0424), N ec 1— 90 3— 1 (F ERM BP— 1 042 5), N ec 1— 5 20 _ 1 (F ERM BP— 1 0426), N ec 1— 845-2 (FERM B P_ 1 042 7) , N ec 1— 8 34— 1: (F ERM BP— 1 0428), N ecl-9 64- 1 (FERM BP— 1 0 6 8 3), N ec 1-1 302-2 (FERM B P- 1 06 84), Ne cl-5 54- 1 (F ER MB P
- Ne cl_803_2 (F ERM BP—1041 7), Ne cl—24 4-3 (FERM BP—10423), N ec 1—530—1 (F ERM BP 1 10424), N ec 1 _ 903 _ 1 (FERM BP— 10425), N ec 1 -520-1 (F ERM BP_10426), Ne cl— 845— 2 (F ER MBP— 10427), N ec 1— 834— 1 (F ERM BP— 10428), Ne cl— 964— 1 (F ERM BP— 1 0683), Ne cl— 1302— 2 (FERM BP— 10684), N ec 1— 554— 1 (FERM BP— 10 681), N ec 1— 769— 2 (F ERM BP—10682) or Nec 8 -41 16-8 (FERM BP—10685) and the hybridoma cell according to [15] above,
- the amino acid sequences of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody heavy chain variable region respectively ( i) SEQ ID NO: 184, 200, 216, 232, 248, 264, 280 and 296, one SEQ ID NO: selected from the group consisting of, and (ii) SEQ ID NO: 185, 201, 217, 233, 249, One sequence number selected from the group consisting of 265, 281 and 297 and (iii) one sequence number selected from the group consisting of SEQ ID NO: 186, 202, 218, 234, 250, 266, 282 and 298
- the antibody according to the above [1] comprising an amino acid sequence identical or substantially identical to the amino acid sequence represented by
- [19a] Amino acid sequence of the first complementarity determining region (CDR1), second complementarity determining region (CDR2), and third complementarity determining region (CDR3) of the antibody heavy chain variable region, respectively SEQ ID NO: 184, SEQ ID NO: 185, and the antibody according to [19] above, which comprises the same or substantially the same amino acid sequence as the amino acid sequence represented by SEQ ID NO: 186,
- the amino acid sequence of the first complementarity determining region (CDR1), second phase determining region (CDR2) and third complementarity determining region (CDR3) of the antibody heavy chain variable region The antibody according to [19] above, which comprises an amino acid sequence identical or substantially identical to the amino acid sequence represented by SEQ ID NO: 232, SEQ ID NO: 233, and SEQ ID NO: 234;
- [19g] Amino acid sequences of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody heavy chain variable region, respectively No. 280, SEQ ID NO: 281 and SEQ ID NO: 282
- the amino acid sequences of the first complementarity determining region (CDR 1), the second complementarity determining region (CDR2) and the third complementarity determining region (CDR3) of the antibody light chain variable region are respectively (Iv) SEQ ID NO: 192, 208, 224, 240, 256, 272, 288 and 304, one sequence number selected from the group consisting of: '(V) SEQ ID NO: 193, 209, 225, 241, 257 , 273, 289 and 305, one selected from the group consisting of: and (vi) one selected from the group consisting of: 194, 210, 226, 242, 258, 274, 290 and 306
- [20a] Amino acid sequence strength of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody light chain variable region,
- Antibody light chain variable region first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) amino acid sequences respectively SEQ ID NO: 256, SEQ ID NO: 257 and SEQ ID NO: 258, the antibody according to [2.0] above, which comprises the same or substantially the same amino acid sequence as the amino acid sequence represented by
- [20 g] The amino acid sequence of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody light chain variable region,
- a diagnostic agent a protein containing the same or substantially the same amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, or a monoclonal antibody against a partial peptide or a salt thereof.
- [2 8] A monoclonal antibody against a mammal, a protein containing the same or substantially the same amino acid sequence as the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, or a partial peptide thereof or a salt thereof
- a method of preventing or treating cancer characterized by administering an effective amount of an antibody;
- a protein containing the same or substantially the same amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, or a partial peptide thereof or a salt thereof A method of promoting apoptosis of cancer cells, comprising administering an effective amount of a monoclonal antibody;
- a protein containing the same or substantially the same amino acid sequence as the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, or a partial peptide thereof, A method for inhibiting cancer cell growth, comprising administering an effective amount of a monoclonal antibody against the salt,
- a protein containing the amino acid sequence identical or substantially identical to the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, or a partial peptide thereof or a salt thereof A method of cancer cell injury utilizing a biological defense mechanism via the Fc region of an antibody, comprising administering an effective amount of a monoclonal nanore antibody,
- a protein containing an amino acid sequence identical or substantially identical to the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3 for producing an apoptosis promoter for cancer cells, or a part thereof The use of monoclonal antibodies against peptide or its salts,
- SEQ ID NO: 1 or SEQ ID NO: 3 for producing a cancer cell growth inhibitor Use of a monoclonal antibody against a protein containing the same or substantially the same amino acid sequence as represented by or a partial peptide or salt thereof,
- Ne cl -803-2 (F ERM BP— 1041 7), N ec 1— 2 44-3 (FERM BP— 10423), N ec 1— 530— 1 (FE RM B P-10424), Ne cl -903- 1 (FERM BP— 10425), Ne c l-520-1 (F ERM BP— 10426), Ne c 1— 845— 2 (FE RM BP— 10427), Ne cl— 834— 1 (F ERM BP— 10428), Ne cl— 964— 1 (FERM BP— 10683), Ne cl— 1302— 2 (FERM BP— 10684), N ec 1 _ 554— 1 (F ERM BP— 10 681), N ec 1—769—2 (F ERM BP—10682) or Nec 8 -41 16-8 (FERM BP—10685) or the prevention or prevention of breast cancer comprising a monoclonal antibody produced
- Ne c 8- 41 16- 8 (FERM BP- 10685) and the monoclonal antibody produced by High Priestess dormer cells that appear in Nect in - monoclonal antibody that competitively bind to 2, Ne c 8_3704_7 (FERM BP—10807) or N ec 8— 351 7— 1 1 (FERM BP—10806), the preventive or therapeutic agent for breast cancer according to [37] above,
- the amino acid sequences of the first complementarity determining region (CDR1), second complementarity determining region (CDR2), and third complementarity determining region (CDR3) of the antibody heavy chain variable region (I) SEQ ID NO: 184, 200, 216, 232, 248, 264, 280 and 296, selected from the group consisting of: (ii) SEQ ID NO: 185, 201, 217, 233, 249, 265, SEQ ID NO: selected from the group consisting of 281 and 297 (iii) SEQ ID NO: amino, represented by SEQ ID NO: selected from the group consisting of 186, 202, 218, 234, 250, 266, 282 and 298
- a preventive or therapeutic agent for breast cancer comprising an antibody comprising an amino acid sequence identical or substantially identical to the acid sequence
- Amino acid sequence strengths of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody light chain variable region respectively (iv ) SEQ ID NO: 192, 208, 224, 240, 256, 272, 288 and 304 selected from the group consisting of: (V) SEQ ID NO: 193, 209, 225, 241, 257, 273, 289 and 305 (Vi) SEQ ID NOs: 194, 210, 226, 242, 258, 274, 290 and 306, identical or substantially identical to the amino acid sequence represented by the SEQ ID NO: selected from the group consisting of A preventive or therapeutic agent for breast cancer comprising an antibody comprising the same amino acid sequence,
- the amino acid g sequence of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody heavy chain variable region is (I) SEQ ID NOs: 184, 200, 216, 232, 248, 264, 280 and 296, (ii) SEQ ID NOs: 185, 201, 217, 233, 249, 265 , SEQ ID NO: selected from the group consisting of 281 and 297 and (iii) SEQ ID NO: amino acid sequence represented by SEQ ID NO: selected from the group consisting of 186, 202, 218, 234, 250, 266, 282 and 298
- Ne cl—1044—4 (FERM BP—10805), Ne c 8—3517-1 1 (F ERM BP—10806) or N ec 8—3704—7 (F ERM BP-10807) Hybridoma cells,
- Ne cl 1 1044 1 4 (FERM BP 1 10805) ⁇ Ne c 8 1 3517-1 1 (F ERM BP—10806) or N ec 8— 3704—7 (F ERM BP—10807)
- F ERM BP—10807 A monoclonal antibody that competitively binds to a monoclonal antibody produced from a hybridoma cell;
- a preventive or therapeutic agent for breast cancer comprising the monoclonal antibody according to [45] or [46] above,
- the amino acid sequence strengths of the first complementarity determining region (CDR1), second complementarity determining region (CDR2) and third complementarity determining region (CDR3) of the antibody heavy chain variable region respectively (i ) SEQ ID NO: 184, 200, 216, 232, 248, 264, 280 and 296, selected from the group consisting of: (ii) SEQ ID NO: 185, 201, 217, 233, 249, 265, 281 and SEQ ID NO: selected from the group consisting of 297 and (iii) SEQ ID NO: comprising an amino acid sequence represented by SEQ ID NO: selected from the group consisting of 186, 202, 218, 234, 250, 266, 282 and 298
- a prophylactic or therapeutic agent for breast cancer comprising an antibody that competitively binds to the antibody
- the amino acid sequences of the first complementarity determining region (CDR 1), the second complementarity determining region (CDR2) and the third complementarity determining region (CDR3) of the antibody light chain variable region respectively (iv ) SEQ ID NO: 192, 208, 224, 240, 256, 272,
- a monoclonal antibody against a protein containing the same or substantially the same amino acid sequence as the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, a partial peptide thereof or a salt thereof is, for example, cancer (eg, colon cancer, breast cancer) , Lung cancer, prostate cancer, esophageal cancer, stomach cancer, liver cancer, biliary tract cancer, spleen cancer, kidney cancer, bladder cancer, uterine cancer, ovarian cancer, testicular cancer, thyroid cancer, knee cancer, brain tumor, blood tumor, etc.)
- Therapeutic agents preferably, preventive / therapeutic agents for breast cancer, lung cancer, colon cancer, prostate cancer, ovarian cancer, knee cancer, etc.
- cancer cell apoptosis promoter cancer cell proliferation inhibitor
- cancer cell cell cycle change Inducer anti It can be safely used as a cancer cytotoxic agent that utilizes a biological defense mechanism via the Fc region of the body or an antibody-dependent cancer cytotoxic agent.
- FIG. 1 shows the amino acid sequence of the heavy chain variable region of the antibody of the present invention obtained in Example 1 (SEQ ID NOs: 187, 203, 219, 235, 251, 267, 283 and 299) and the light chain variable region. Amino acid sequences (SEQ ID NOs: 195, 211, 227, 243, 259, 275, 291 and 307).
- FIG. 2 shows the base sequence (SEQ ID NOs: 191, 207, 223, 239, 255, 271, 287 and 303) of the heavy chain variable region of the antibody of the present invention obtained in Example 1.
- FIG. 3 shows the nucleotide sequence of the L chain variable region of the antibody of the present invention obtained in Example 1 (SEQ ID NOs: 199, 215, 231, 247, 263, 279, 295 and 311).
- FIG. 4 shows a practical change in average tumor volume after transplantation of cancer cell lines in Example 23.
- Nectin-2 Protein comprising an amino acid sequence identical or substantially identical to the amino acid sequence represented by (hereinafter, Nectin - 2 alpha and abbreviated) or ⁇ ID NO: amino acid sequence identical or represented by 3
- a protein containing substantially the same amino acid sequence hereinafter abbreviated as Nectin-2 ⁇
- Nectin-2 both may be referred to as Nectin-2 or the protein of the present invention
- Animals of animals eg, guinea pigs, rats, mice, chickens, rabbits, pigs, hidges, tusks, monkeys, etc.
- the amino acid sequence substantially identical to the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3 is about 50% or more of the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3. , Preferably about 60% or more, more preferably about 70% or more, more preferably about 80% or more, more preferably about 90% or more, particularly preferably about 95% or more. Examples include amino acid sequences.
- Examples of the protein containing an amino acid sequence substantially the same as the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3 include, for example, the aforementioned SEQ ID NO: 1 or SEQ ID NO: 3.
- a protein having an amino acid sequence substantially identical to the amino acid sequence and having substantially the same quality of activity as the protein containing the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3 is preferred.
- Substantially homogeneous means that their properties are qualitatively homogeneous (eg, physiologically or pharmacologically). Therefore, the activity of the protein of the present invention is equivalent (eg, about 0.1 to 1: 100 times, preferably about 0.1 to 10 times, more preferably 0.5 to
- the quantitative factors such as the degree of activity and the molecular weight of the protein may be different.
- Nectin-2 includes, for example, (i) 1 or 2 or more (for example, about 1 to 50, preferably:! To 3) in the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3. About 0, more preferably about 1 to 10, more preferably a number (1 to 5) amino acid deletion sequence, (ii) represented by SEQ ID NO: 1 or SEQ ID NO: 3 1 or 2 or more (for example, about 1 to 50, preferably about 1 to 30, more preferably about 1 to 10, more preferably a number (1 to
- amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3 for example, about 1 to 50, preferably It is';! About 30 to 30 amino acids, more preferably about 1 to 10 amino acids, more preferably a number (1 to .5) amino acids, (iv) S
- the position of the insertion, deletion or substitution is not particularly limited.
- the protein in the present specification has an N-terminus (amino terminus) at the left end and a C-terminus (carboxyl terminus) at the right end according to the convention of peptide labeling.
- the protein used in the present invention including the protein containing the amino acid sequence represented by SEQ ID NO: 1, has a C-terminal carboxyl group (-C00H) Hcarboxylate (-C00-) Any of amide (—C0NH 2 ) and ester (—C00R) may be used.
- R in the ester e.g., methyl, Echiru, n- propyl, isopropyl
- ⁇ I 6 alkyl group such as n- butyl, for example, consequent opening pentyl
- C 3 one s cycloalkyl group such as cyclohexyl consequent opening , for example, phenyl, C 6 _ 1 2
- Ariru groups such as single naphthyl Le shed, for example, benzyl, such as phenethyl phenylene Lou C _ 2 alkyl or ⁇ - naphthylmethyl etc.
- ⁇ - Nafuchiru C i -! 2 alkyl Group, bivalyloxymethyl group and the like are used.
- Nectin-2 has a carboxyl group (or carboxylate) other than the C-terminus
- those having a carboxyl group amidated or esterified are also included in 'Nectin-2 used in the present invention.
- the ester in this case, for example, the aforementioned C-terminal ester or the like is used.
- the Nectin- 2, amino acid residues (e.g., Mechionin residues) of the N-terminal amino group is protecting group (e.g., formyl groups, C such Asechiru groups - such as C ⁇ 6 Ashiru group such as s Arukanoiru ), N-terminal glutamine residue generated by cleavage in vivo is pyroglutamine oxidized, and a substituent on the side chain of amino acid in the molecule (eg, 1 OH, 1 SH, amino) Group, imidazole group, indole group, guanidino group, etc.) are suitable protecting groups (for example, C such as formyl group, acetyl group). ! _ 6 Arukanoiru such Ashiru group such group) as are protected with, or sugar chain also includes conjugated proteins such as glycoproteins bound.
- protecting group e.g., formyl groups, C such Asechiru groups - such as C ⁇ 6 Ashiru group such as
- Nectin-2 include, for example, a protein containing the amino acid sequence represented by SEQ ID NO: 1 (Nectin-2) and a protein containing the amino acid sequence represented by SEQ ID NO: 3 (Nectin-2 ⁇ ) Etc. +
- the Nectin-2 partial peptide may be any of the above-mentioned Nectin-2 partial peptides, preferably any one having the same properties as Nectin-2.
- the constituent amino acid sequences of Nectin-2 preferably 50 or more, more preferably 70 or more, more preferably 100 or more, and most preferably 200 Peptides having the above amino acid sequences are used.
- the partial peptide of Nectin-2 used in the present invention is 1 or 2 or more (preferably about 1 to 20 pieces, more preferably about 1 to 10 pieces, more preferably, in the amino acid sequence.
- a number (1-5) of amino acids are deleted, or 1 or 2 or more (preferably about 1-20, more preferably about 1-10, more preferably a number in the amino acid sequence) (1-5) amino acids are added, or 1 or 2 or more (preferably about 1 to 20 pieces, more preferably: about 1 to about 10 pieces, and more preferably a number to the amino acid sequence. (1-5) amino acids, or 1 or 2 (preferably about 1-20, more preferably about 1-10) in the amino acid sequence. Preferably several, more preferably about 1 to 5 amino acids are other amino acids It may be substituted.
- the partial peptide of Nectin- 2 may be any of a carboxyl group (—C00H), a carboxylate (—C0 (T), an amide (—C0NH 2 ), or an ester (—C00R) at the C-terminus.
- Nectin-2 partial peptides have a carboxyl group (or carboxylate) in addition to the C-terminus, as well as Nectin-2, and N-terminal amino acid residues (eg, methionine residue).
- Group is protected with a protecting group, and the glutamine residue generated by cleaving the N-terminal side in vivo is pyroglutamine oxidized, but the substituent on the amino acid side chain in the molecule is appropriately protected.
- those protected by a group or complex peptides such as so-called sugar peptides to which sugar chains are bound.
- Nectin-2 or its partial peptide salts include salts with physiologically acceptable acids (eg, inorganic acids, organic acids) and bases (eg, alkali metal salts), especially physiological.
- the acid addition salts that are acceptable are preferred.
- examples of such salts include salts with inorganic acids (eg, hydrochloric acid, phosphoric acid, hydrobromic acid, sulfuric acid), or organic acids (eg, acetic acid, formic acid, propionic acid, fumaric acid, maleic acid, Salts with succinic acid, tartaric acid, succinic acid, malic acid, succinic acid, benzoic acid, methanesulfonic acid, benzenesulfonic acid) are used.
- inorganic acids eg, hydrochloric acid, phosphoric acid, hydrobromic acid, sulfuric acid
- organic acids eg, acetic acid, formic acid, propionic acid, fumaric acid, maleic acid
- the monoclonal antibody against Nectin-2 or its partial peptide or its salt (hereinafter sometimes abbreviated as the antibody of the present invention) is an antibody that can recognize Nectin-2 or its partial peptide or its salt. Any monochrome monoclonal antibody may be used. Of these, human monoclonal antibodies are preferably used.
- the antibody of the present invention is preferably a monoclonal antibody (particularly a human monoclonal antibody) against Nectin-2 8, or a partial peptide thereof or a salt thereof.
- an antibody having at least one of the following characteristics (1) to (8) is preferably used.
- cancer cells eg, human cancer cells O V—90.
- ADCC antibody-dependent cellular cytotoxicity
- Nectin-2 homozygous cis dimer and Nectin-2 homozygous cis dimer inhibit trans-binding
- Nectin- 2 alpha homo cis dimer Inhibits the trans-binding of Nectin-2 ⁇ with a homologous cis dimer
- Nectin-2 which inhibits the trans-binding of heterozygous cis dimer with Nectin-2 ⁇ and homo cis dimer of Nectin-3,
- Example 4 It belongs to any of the epitope groups I to VII shown in Example 4 or the epitope subgroup shown in Example 18. Preferably, it belongs to Epitorp Group IV, VI or VII of Example 4. More preferably, it belongs to the epitopic subgroup IVb, VIb or Vila of Example 18.
- Ne cl— 803-2 (FERM BP_ 1041 7), Ne cl— 244-3 (FERM BP _ 10423), N ec 1— 53.0— 1 (FE RM BP— 10424), N ec 1— 903 — 1 (FERM BP-10425), Ne cl 1 520— 1 (F ERM BP— 10426), Ne c 1— 845— 2 (FE RM BP— 10427), Ne c 1— 834— 1 (FERM BP— 10428 , Ne cl -964-1 (F ERM BP— 1 0683), Ne cl— 1 302— 2 (FERM BP _ 10684), N ec 1— 554— 1 (F ERM BP—10 681), Ne cl— 769 — 2 (F ERM BP— 10682) or Nec 8 -41 16-8 (FERM BP— 10685)) monoclonal antibodies produced by hybridoma cells (
- amino acid sequence of the epitope site (Ii).
- One or more amino acids in the amino acid sequence of the epitope site (for example, about 1-10, preferably several (1-5) amino acids) are deleted.
- About 1 to 10, more preferably a number (1 to 5) of amino acid sequences added with amino acids, (iii) 1 or more (eg, about 1 to 10) amino acid sequences in the epitope site More preferably, an amino acid sequence in which a number (1-5) amino acids are inserted, (iv) 1 or 2 or more (for example, about 1 to 10 in the amino acid sequence of the epitope site, more preferably a number ( Amino acid sequences in which 1 to 5) amino acids have been substituted with other amino acids, or (V) amino acid sequences in which (i) to (iv) above are combined.
- the position of insertion, addition, deletion or substitution of the above amino acid sequence is not particularly limited.
- amino acid sequence substantially identical to the epitope site includes an amino acid sequence in the vicinity of the epitope site.
- amino acid sequences on the N-terminal side of the epitope portion For example, about 1 to 10, more preferably a number (1 to 5) amino acid sequence added
- C-terminal side of the epitope moiety (Iii) amino acid sequence on the N-terminal side of the epitope moiety (for example, about 1 to 2 or more '(for example, about 1 to 10, more preferably several (1 to 5)) amino acids.
- amino acid sequences are added with one or more (for example, about 1 to 10, more preferably number (1 to 5)) amino acids (Iv)
- One or more amino acid sequences (for example, 1 to 2) in the amino acid sequence of (iv) amino acid sequence (for example, about 1 to 10, more preferably (1 to 5)) on the C-terminal side of the epitope moiety
- amino acid sequence with about 10 amino acids, more preferably several (1-5) amino acids attached, and the like can be mentioned.
- Ne c .1 -769-2 (FERM BP— 10682) or.
- an antibody that competitively binds to a monoclonal antibody produced by each hybridoma cell for Nectin-2 ⁇ or Nectin-2 ⁇ refers to any of the 12 types of antibodies described above. Refers to an antibody that competitively inhibits binding to Nectin-2 or Nectin-2 ⁇ by adding an excess amount of, for example, the above-mentioned 12 types of antibodies against the antibody. An antibody that exhibits a binding inhibition rate of about 50 to 100% when any of the antibodies is added in a 50-fold molar amount.
- Ne c 1-76 F ERM BP— 1 0 6 8 2
- amino acid sequence A is about 50% or more, preferably about 60% or more, more preferably, amino acid sequence A.
- amino acid sequence A is about 50% or more, preferably about 60% or more, more preferably, amino acid sequence A.
- Ne c 1-769-2 (FERM AB P— 10682) or.
- an antibody that competitively binds to a monoclonal antibody produced by each hybridoma cell against Nectin-2 ⁇ or Nectin-2 ⁇ refers to any of the above 12 types of antibodies. It refers to an antibody in which binding to Nectin-2 ⁇ or Nectin-25 is competitively inhibited by adding an excess amount. Specifically, for example, any of the above 12 types of antibodies against the antibody An antibody that exhibits a binding inhibition rate of about 50 to 100% when added in a 50-fold molar amount.
- amino acid sequence A is about 50% or more, preferably about 60% or more, more preferably, amino acid sequence A.
- amino acid sequence A is about 50% or more, preferably about 60% or more, more preferably, amino acid sequence A.
- amino acid sequence A is about 70% or more, more preferably about 80% or more, more preferably about 90% or more, particularly preferably about 95%
- an antibody containing an amino acid sequence substantially the same as amino acid sequence A examples include, for example, a protein containing an amino acid sequence substantially the same as the amino acid sequence A and containing the amino acid sequence A.
- An antibody having substantially the same activity as that of the antibody is preferable.
- “Substantially homogeneous” means that their properties are homogeneous in nature (eg, physiologically or pharmacologically). Therefore, it is preferable that the activity of the antibody is equivalent (eg, about 0.1 1 to: 100 times, preferably about 0.1 to 10 times, more preferably 0.5 to 2 times). However, quantitative factors such as the degree of these activities and the molecular weight of the protein may be different.
- Examples of the monoclonal antibody containing the amino acid sequence that is the same or substantially the same as the amino acid sequence A include, for example, (i) 1 or more of amino acid sequence A (for example, about 1 to 50, Preferably about 1 to 30 amino acids, more preferably about 1 to 10 amino acids, more preferably a number (1 to 5) amino acids deleted, (ii) 1 or 2 in amino acid sequence A
- An amino acid sequence attached with more than 1 (for example, about 1 to 50, preferably about 1 to 30, more preferably about 1 to 10, more preferably several (1 to 5)) amino acids (Iii) 1 or 2 or more (for example, about 1 to 50, preferably about 1 to 30, more preferably about 1 to 10, more preferably a number (1 to 5) in amino acid sequence A Amino acid sequence in which amino acids are inserted, (i V) 1 in amino acid sequence A Or two or more (for example, about 1 to 50, preferably about 1 to 30, more preferably about 1 to 10, more preferably several (1 to 5)) amino acids are other amino acids
- the antibodies of the present invention include chimeric antibodies, humanized antibodies, human antibodies, and antibody fragments.
- “Chimeric antibody” means an antibody having a variable region derived from a heterologous antibody and a human antibody constant region (see, for example, European Patent Publication EP 0 1 2 500 23).
- a “humanized antibody” is a modification of a heterologous antibody for humans such as mice.
- Human antibody means a monoclonal antibody prepared using a transgenic animal into which a human antibody gene has been introduced (see European Patent Publication EP 0 5 4 6 0 7 3) and a human antibody gene as bacteriophage, E. coli Produces antibodies against the surface of cells such as yeast and animal cells and ribosomes, monoclonal antibodies (Nature Biotechnology 23, 1105 (2005)) and Nectin-2 produced using so-called antibody display technology It means a monoclonal antibody isolated from human B cells using cell fusion or fuzzy display techniques.
- antibody fragment refers to a part of a full-length antibody, and generally includes an antigen-binding region or a variable region.
- Antibody fragments include, for example, F ab, F ab, F (ab ′) 2 , single chain antibody (s C F v), disulfide stabilized antibody (ds FV) and the like.
- the antibody according to a preferred embodiment of the present invention is the amino acid sequence represented by SEQ ID NO: 1 (Nectin-2 ⁇ ) or SEQ ID NO: 3 (Nectin-2 5), of the 1st to 350th positions (extracellular region).
- Epitopes present in amino acid sequence 47th to 142nd positions of the amino acid sequence represented by SEQ ID NO: 1 (Nectin-2 a) or SEQ ID NO: 3 (Nectin-2 ⁇ ) (first; EG-like domain) or epitopes present in the amino acid sequence of positions 175-240 (second IG-like domain); or SEQ ID NO: 1 (Nectin-2) or SEQ ID NO: 3 (Nectin-2 ⁇ )
- SEQ ID NO: 1 (Nectin-2) or SEQ ID NO: 3 (Nectin-2 ⁇ ) An amino acid sequence containing at least one amino acid residue at positions 75, 76, 77, 78, 95, 137, 145, 173, 184, 186, and 212 is recognized.
- the present invention also provides a monoclonal antibody containing a specific CDR amino acid sequence or variable region amino acid sequence. Furthermore, the present invention also provides a monoclonal antibody light chain or a fragment thereof, a monoclonal antibody heavy chain or a fragment thereof comprising a specific CDR amino acid sequence.
- variable regions at the far ends of the heavy and light chains of the antibody which are called the heavy chain variable region (VH) and the light chain variable region (VL), respectively.
- VH heavy chain variable region
- VL light chain variable region
- CDR complementarity determining region
- the portion of the variable region other than the C D R has a role of maintaining the C D R structure, and is called a framework region (F R).
- F R framework region
- the heavy chain variable region includes three complementarity determining regions, a first complementarity determining region (CDR 1), a second complementarity determining region (CDR2), and a third complementarity determining region (CDR3). Exists.
- the three complementarity determining regions in the heavy chain variable region are collectively called the heavy chain complementarity determining region.
- the light chain variable region there are three complementarity determining regions: a first complementarity determining region (CDR1), a second complementarity determining region (CDR2), and a third complementarity determining region (CDR3).
- the three complementarity determining regions in the light chain variable region are collectively referred to as the light chain complementarity determining region. .
- the antibody comprises a first complementarity determining region (CDR 1), a second complementarity determining region (CDR 2) and a third complement of an antibody heavy chain variable region.
- CDR 1 complementarity determining region
- CDR 2 complementarity determining region
- CDR 3 complementarity determining region
- SEQ ID NO: selected from the group consisting of SEQ ID NO: 184, 200, 216, 232, 248, 264, 280 and 296,
- SEQ ID NO: SEQ ID NO: selected from the group consisting of 185, 201, 217, 233, 249, 265, 281 and 297
- the amino acid sequence is identical or substantially identical to the amino acid sequence represented by SEQ ID NO: selected from the group consisting of:
- the antibody according to another preferred embodiment of the present invention comprises a first complementarity determining region (CDR 1), a second complementarity determining region (CDR2) and a third complementarity determining region (
- the amino acid sequence of CDR 3) is selected from the group consisting of (iv) SEQ ID NO: 192, 208, 224, 240, 256, 272, 288 and 304, (v) SEQ ID NO: 193, 209, 225, 241, 257, 273, 289 and 305 selected from the group consisting of SEQ ID NO: opi (vi) SEQ ID NO: 194, 210, 226, 242, 258, 274, 290 and 306 It contains the same or substantially the same amino acid sequence as the amino acid sequence represented by the selected SEQ ID NO.
- the CDR sequence of the antibody of the present invention is not necessarily limited, preferred combinations of amino acid sequences as VH CDR1, VH CDR2 and VH CDR3, and preferred combinations of amino acid sequences as VL CDR1, VL CDR2 and VL CDR3 are: These are shown in Tables 21 and 22 below.
- the amino acid sequence other than CDR is not particularly limited, and so-called CDR-grafted antibodies in which the amino acid sequence other than CDR is derived from other antibodies, particularly other types of antibodies, are included in the antibody of the present invention.
- human-derived amino acid sequences are preferred.
- amino acid sequences and base sequences of the antibody variable regions of the present invention are preferably those shown in Table 25.
- a known method can be used to prepare a monoclonal antibody containing a specific CDR amino acid sequence or variable domain amino acid sequence of the present antibody.
- the antibody of the present invention is a monoclonal antibody in which the constant region of the antibody is preferably a human antibody, more preferably a human IgG, and more preferably a human IgG1 subclass.
- Nectin-2 An antibody against Nectin-2 or a partial peptide thereof or a salt thereof (hereinafter, these are simply abbreviated as Nectin-2 in the description of the antibody) is a known antibody or antiserum. Can be manufactured according to the law.
- Examples of the antigen used for preparing the antibody of the present invention include a protein (Nectin-2) containing the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3, or a partial peptide thereof, or their A cell line that naturally or artificially highly expresses a protein containing the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3 (Nectin-2) or a membrane fraction thereof, Nectin-2 Any protein such as a fusion protein of an extracellular domain protein and other protein or peptide or a salt thereof, or a (synthetic) peptide having one or more antigenic determinants identical to Nectin-2 may be used. (Hereinafter, these may be simply referred to as the antigen of the present invention).
- antigen of the present invention examples include a cell line that naturally or artificially highly expresses Nectin-2 or a membrane fraction thereof, an extracellular region protein of Nectin-2 or a salt thereof, and an extracellular region of Nectin-2.
- a fusion protein of a region and other proteins or peptides, or a (synthetic) peptide having one or more antigenic determinants identical to Nectin-2 is preferably used.
- proteins or peptides for example, FLAG- tag, His-tag, Myc- tag, V5-tag, GST-tag, S- tag, T7-tag s Ya human antibody, Fc, such as a mouse antibody
- the length of such a (synthetic) peptide is not particularly limited as long as it has an immunogenicity. For example, six, preferably 10, and more preferably 12 consecutive amino acid residues are present. The thing which has group is mentioned.
- Nectin-2 or a partial peptide thereof or a salt thereof can be produced from the aforementioned human warm-blooded animal cells or tissues by a known protein purification method or a method analogous thereto, or a DNA encoding the protein. It can also be produced by culturing a transformant containing. It can also be produced according to the peptide synthesis method described below. A fusion protein of the extracellular region of Nectin-2 and another protein or peptide can be produced by culturing a transformant containing DNA encoding the fusion protein.
- the antigen of the present invention or a salt thereof is prepared from a tissue or a cell of a human warm-blooded animal (for example, guinea pig, rat, mouse, chicken, rabbit, puta, hidge, ushi, monkey, etc.)
- a human warm-blooded animal for example, guinea pig, rat, mouse, chicken, rabbit, puta, hidge, ushi, monkey, etc.
- the crude fraction eg, membrane fraction, soluble fraction
- extraction with acid, surfactant or alcohol is performed, and the extracted solution is subjected to chromatography such as salting out, dialysis, gel filtration, reverse phase chromatography, ion exchange chromatography, affinity chromatography, etc. It can also be purified and isolated by combining.
- Nectin-2 DNA completely encoding Nectin-2 or its partial peptide (hereinafter, in the description of cloning and expression of DNA encoding these, these may be simply abbreviated as Nectin-2)
- Nectin-2 the ability to amplify by PCR using a synthetic DNA primer having a part of the nucleotide sequence coding for Nectin-2 or DNA incorporated into an appropriate vector or a part of Nectin-2 Labeled with a DNA fragment encoding the entire region or synthetic DNA
- the cage polynucleotide used for PCR may be any nucleotide as long as it contains a nucleotide sequence encoding Nectin-2.
- any of genomic DNA, genomic DNA library, the above-mentioned cell 'tissue-derived cDNA, the above-mentioned cell' tissue-derived cDNA library, and synthetic DNA may be used.
- the hybridization method can be performed, for example, according to the method described in Molecular Cloning 2 ⁇ (J. Sambrook et al., Cold Spring Harbor Lao. Press, 1989).
- it can be performed according to the method described in the attached instruction manual. More preferably, it can be carried out according to highly stringent conditions.
- High stringent conditions are, for example, conditions where the sodium concentration is about 19 to 4 Om M, preferably about 19 to 20 mM, and the temperature is about 50 to 70 ° C, preferably about 60 to 65 ° C. . In particular, it is most preferable that the sodium concentration is about 19 mM and the temperature is about 65 ° C.
- a protein containing the amino acid sequence represented by SEQ ID NO: 1 (the DNA encoding Nectin-2c is a DN containing the nucleotide sequence represented by SEQ ID NO: 2) A, etc.
- (ii) which encodes a protein containing the amino acid sequence represented by SEQ ID NO: 3 (Nectin-2S) D ⁇ ⁇ is a DNA containing the nucleotide sequence represented by SEQ ID NO: 4 Etc.
- the DNA base sequence can be converted using PCR, a known kit such as Mutan TM -super Express Km (Takara Shuzo), Mutan TM -K (Takara Shuzo), etc. It can be carried out according to a method known per se such as the Gapped duplex method and the Kunkel method, or a method analogous thereto.
- the cloned DNA encoding Nectin-2 can be used as it is depending on the purpose, or if desired, digested with a restriction enzyme or attached with a linker.
- the DNA may have ATG as a translation initiation codon at the 5 'end, and may have TAA, TGA or TAG as a translation termination codon at the 3' end. These translation initiation codon and translation termination codon can also be added using an appropriate synthetic DNA adapter.
- DNA that codes for the extracellular region of Nectin-2 cloned or synthesized by the same method as described above and DNA encoding other proteins (peptides) are known per se or in accordance with them. Can be linked according to the method.
- Nectin-2 expression vectors include, for example, (i) by cutting out the DNA fragment of interest from DNA encoding Nectin-2 and (mouth) ligating the DNA fragment downstream of the promoter in an appropriate expression vector. Can be manufactured.
- vectors examples include plasmids derived from E. coli (eg, p BR 322, p BR 325, pUC 12, pUC 13), and plasmids derived from Bacillus subtilis (eg, pUB 110, pTP 5, pC 1 94). Plasmids derived from yeast (eg, p SH 1 9, p SH 15), bacteriophages such as ⁇ phage, animal viruses such as retrovirus and vaccinia virus, insect viruses such as baculovirus, and p A 1— 1 1, pXT l, pR c / CMV, p R c / RSV, pc DNA I / Neo, etc. are used. ',
- the promoter used in the present invention may be any promoter as long as it is appropriate for the host used for gene expression.
- SRa promoter when animal cells are mainly used, SRa promoter, SV40 promoter, LTR promoter motor, CMV (cytomegaloinoles) promoter, HSV ⁇ TK promoter and the like can be mentioned.
- CMV promoter SR promoter, etc.
- the host is Eshierihia genus bacterium, trp promoter, lac flop port motor, rec A promoter, 1 P L promoter 1 pp promoter, T 7 promoter, if the host is Bacillus, S pol promoter
- yeast such as a promoter, a SPO2 promoter, and a pe ⁇ ⁇ promoter
- the ⁇ 5 promoter, PGK promoter, GAP promoter, ADH promoter, etc. are preferred.
- a polyhedrin mouth motor, p10 promoter, etc. are preferable.
- the expression vector contains enhancer, splicing signal, poly A addition signal, selection marker, SV40 replication origin (hereinafter sometimes abbreviated as SV40 ori), etc. Can be used.
- a selection marker for example, dihydrofolate reductase (hereinafter, d h f r
- MTX metalhotrexate
- Amp r ampicillin resistant gene
- N eo r neomycin resistant gene
- Nectin-2 adds a signal sequence suitable for the host to the N-terminal side of Nectin-2. If the host is a genus Escherichia, the PhoA signal sequence, ⁇ , the signal sequence, etc. If the host is a Bacillus genus, the ⁇ -amylase signal sequence, saplicin signal sequence, etc. In the case of yeast, MF a ⁇ signal sequence, SUC 2 ⁇ signal sequence, etc. If the host is an animal cell, insulin signal sequence, one interferon 'signal sequence, antibody molecule ⁇ signal sequence, etc. are used. it can.
- hosts examples include Escherichia bacteria, Bacillus bacteria, yeast, insect cells, insects, and animal cells.
- Escherichia examples include, for example, Escherichia coli K 1 2-DH 1 [Proc. Natl. Acad. Sci. USA, 60 ⁇ , 160 (1968)], JM1 0 3 [Nucleic Acids Research, 9 ⁇ , 309 (1981)], JA 2 2 1 [Journal of Molecular Biology, 120 ⁇ , 517 (1978)], HB 1 0 1 [Journal of Molecular Biology, 41 ⁇ , 459 (1969)], C 6 0 0 [Genetics, 39 ⁇ , 440 (1954)] is used.
- Bacillus examples include Bacillus subtilis MI 1 1.4 [Gene, 24 ⁇ , 255 (1983)], 2 07-2 1 [Journal of Biochemistry, 95 95, 87 (1984)] Is used.
- yeast examples include Saccharomyces cerevisiae AH 2 2, AH 2 2 R—, NA 8 7-1 1 A, DKD— 5 D, 2 0 B— 1 2 and Schizosaccharomyces pombe ) NCY C 1 9 1 3, NCYC 2 0 3 6, Pichia pastoris KM 7
- insect cells for example, when the virus is Ac NPV, larvae-derived cell lines derived from night stealing (Spodoptera frugiperda cell; Sf cells), MG1 cells derived from the midgut of Trichoplusia ni, derived from eggs of Trichoplusia ni High Five TM cells, cells derived from Mamestra brassicae or cells derived from Estigmena acrea are used.
- Sf cells cocoon-derived cell lines (Bombyx mori N cells; BmN cells) are used.
- Sf cells include Sf9 cells (ATCCCRL1711), Sf21 cells (hereinafter, Vaughn, J.L. et al., In Vivo, 13, 213-217, (1977)).
- insects examples include silkworm larvae [Maeda et al., Nature, 3 1 5 3, 5 9 2 (1 98 5)].
- animal cells include monkey COS-7 cells, Vero cells, Chinese hamster CHO cells (hereinafter abbreviated as CHO cells), dhfr gene-deficient Chinese hamster CHO cells (hereinafter CHO (dhf ⁇ -) cells) Abbreviated), mouse L cells, mouse At ⁇ —20 cells, mouse myeloma cells, mouse ATDC 5 cells, mouse NS 0 cells, mouse FM3 A cells, rat GH3 cells, human FL cells, human fetal HE K 2 9 3 cells, human fetal cells 2 9 3 F cells, etc. are used. Transformation of Escherichia can be carried out, for example, according to the method described in Pro Natl. Acad. Sci. USA, 69, 2110 (1972), Gene, 17 ⁇ , 107 (1982).
- Transformation of Bacillus can be performed, for example, according to the method described in Molecular & General Genetics, I 68 ⁇ , 111 (1979).
- Insect cells or insects can be transformed, for example, according to the method described in Bio / Technology, 6, 47-55 (1988).
- a liquid medium is suitable as the medium used for the cultivation, including a carbon source necessary for the growth of the transformant.
- Nitrogen sources include, inorganic substances and the like.
- carbon sources include glucose, dextrin, soluble starch, and sucrose.
- nitrogen sources include ammonium salts, nitrates, corn sheep 'liquor, peptone, force zein, meat extract, soybean cake, potato extract.
- inorganic or organic substances and inorganic substances include calcium chloride, sodium dihydrogen phosphate, and magnesium chloride.
- yeast extract, vitamins, growth promoting factors and the like may be added.
- the pH of the medium is preferably about 5-8.
- M 9 medium containing glucose and casamino acid For example, M 9 medium containing glucose and casamino acid [Miller, Journal of Experiments in Molecular Genetics, 431-433, Cold Spring Harbor Laboratory, New York 1972] I like it. If necessary, in order to make the promoter work efficiently, for example, a drug such as 3 ⁇ -monodenoletalic acid can be added.
- the culture is usually performed at about 30 to 0 ° C. for about 6 to 24 hours, and if necessary, aeration or agitation can be added.
- examples of the medium include Burkholder minimum medium [Proc. Natl. Acad. Sci. USA, 77 ⁇ , 4505 (1980)] and 0.5. SD medium containing% casamino acid [Proc. Natl. Acad. Sci. USA, 81 ⁇ , 5330 (1984)]. It is preferable to adjust the pH of the medium to about 5-8. Cultivation is usually carried out at about 20 ° C to 35 ° C for about 24 to 72 hours, and if necessary aeration and stirring are added.
- the medium When cultivating a transformant whose host is an insect cell or an insect, the medium is an additive such as 10% urchin blood that has been inactivated to Grace's Insect Medium (Nature, 195, 788 (1962)). Those added as appropriate are used.
- the pH of the medium is preferably adjusted to about 6.2 to 6.4. Incubate at approximately 27 ° C for approximately 3-5 days, if necessary
- examples of the medium include: MEM medium [Science, 122 ⁇ , 501 (1952)] containing about 5 to 20% fetal calf serum, DMEM medium (Virology, 8 ⁇ , 396 (1959)], RPMI 1 6 40 0 medium [The Journal of the American Medical Association, 199 ⁇ , 519 (1967), 1 9 9 medium [Proceeding of the Society for the Biological Medicine, 73 (1950)] etc. H is preferably about 6 to 8. Incubation is usually carried out at about 30 to 40 ° C for about 15 to 60 hours, if necessary Add aeration and agitation.
- Nectin-2 can be generated inside the cell, the cell membrane, or extracellularly of the transformant.
- Nectin-2 For separation and purification of Nectin-2 from the above culture, for example, the following method can be used.
- Nectin-2 When extracting Nectin-2 from cultured cells or cells, after culturing, collect the cells or cells by a known method, suspend them in an appropriate buffer, and use ultrasound, lysozyme and Z or frozen. For example, a method of obtaining a crude protein extract by centrifugation or filtration after disrupting cells or cells by thawing or the like is appropriately used.
- the buffer solution may contain a protein denaturant such as urea or guanidine hydrochloride, or a surfactant such as Triton X—100 ⁇ . If Nectin-2 is secreted into the culture medium, the cells or cells are separated from the supernatant by a method known per se after completion of the culture, and the supernatant is collected.
- Nectin-2 contained in the thus obtained culture supernatant or extract can be performed by appropriately combining per se known separation and purification methods.
- These known separation and purification methods include methods that utilize solubility, such as salting-out solvent precipitation methods, dialysis methods, ultrafiltration methods, and gel filtration methods that mainly use differences in molecular weight. ⁇ Methods using charge differences such as ion exchange chromatography, methods using specific affinity such as affinity chromatography, hydrophobic interactions such as hydrophobic interaction chromatography, and reverse phase chromatography The method of using the method, the method of using the difference in isoelectric point such as chromatophore force singing, etc. are used.
- Nectin-2 obtained in this way is obtained in the free form, it can be converted into a salt by a method known per se or a method analogous thereto, and conversely when obtained as a salt
- -Nectin-2 produced by recombinants can be modified arbitrarily or the polypeptide can be partially removed by applying an appropriate protein-modifying enzyme before or after purification.
- an appropriate protein-modifying enzyme for example, trypsin, chymotrypsin, arginylendopeptidase, protein kinase, glycosidase and the like are used as protein modifying enzymes.
- Nectin-2 thus produced can be measured by Western blotting or the like using a specific antibody.
- Mammalian cells that express Nectin-2 themselves can also be used directly as the antigen of the present invention.
- a mammalian cell a natural cell as described in the above section (a), a cell transformed by the method as described in the above section (b), and the like can be used.
- the host used for transformation may be any cell collected from humans, monkeys, rats, mice, hamsters, and the like.
- HEK293 cells, C0S7 cells, CHO-K1 cells, NIH3T3 cells, Balb3T3 cells, FM3A cells, L929 cells, SP2 / 0 cells, P3U1 cells, NS0 cells, B16 cells, or P388 cells are preferably used.
- a (synthetic) peptide or salt thereof having one or more of the same antigenic determinants as Nectin-2 can be prepared according to a peptide synthesis method known per se, or Nectin-2 with an appropriate peptidase. It can be manufactured by cutting.
- a peptide synthesis method for example, either a solid phase synthesis method or a liquid phase synthesis method may be used. That is, the target peptide can be produced by condensing a partial peptide or amino acid capable of constituting the peptide and the remaining portion, and removing the protecting group when the product has a protecting group. Examples of known condensation methods and protecting group removal include the methods described in the following (i) to (V).
- the partial peptide used in the present invention can be purified and isolated by combining liquid chromatography and recrystallization.
- the partial peptide obtained by the above method is a free form, it can be converted to an appropriate salt by a known method or a method analogous thereto, and conversely, when obtained as a salt, the known method or It can be converted to a free form or other salt by a method similar to that.
- the antigen of the present invention is administered to a warm-blooded animal.
- an immunization method any method can be used as long as it can promote antibody production, and intravenous injection, intraperitoneal injection, intramuscular injection, subcutaneous injection, intradermal injection, footpad injection, etc. are preferably used. . '
- Natural mammalian cells or transformed mammalian cells expressing the protein of the present invention were suspended in a medium (eg, RPMI1640) or buffer (eg, Hanks' Balanced Salt Solution) used for tissue culture.
- the immunized animal can be injected in a state.
- the antigen of the present invention can be directly immunized with an insoluble antigen.
- a complex obtained by binding or adsorbing the antigen of the present invention to an appropriate carrier may be immunized.
- the mixing ratio between the carrier (carrier) and the antigen (hapten) of the present invention is such that the antibody can be efficiently produced against the antigen of the present invention bound or adsorbed to the carrier, and what ratio is what.
- a natural or synthetic polymer carrier usually used for the production of an antibody against a hapten antigen is bound at a ratio of 0.1 to 100 to hapten 1 by weight.
- an adsorbed product can be used.
- natural polymer carriers include serum albumin of mammals such as rabbits, rabbits, and humans, such as mammalian thyropurines such as rabbits and rabbits, and 11 animals such as rabbits, rabbits, humans, and hidges. Hemoglobin, keyhole limpet mosyanin, etc. are used.
- synthetic polymer carrier for example, various latus statuses such as polymers or copolymers of polyamino acids, polystyrenes, polyataryls, polybules, polypropylenes, and the like can be used.
- a carrier to hapten forces pulling can use various condensing agents, tyrosine, histidine, Jiazoniumu compounds such Bisujiazo of base Njijin bridging the tryptophan, such Gurutaruanore Debito bridging the Amino group comrades Dialdehyde compounds, diisocyanate compounds such as toluene-1,4-diisocyanate, N, N, 1o-phenylene dimaleimides that crosslink thiol groups, maleic groups that crosslink amino groups and thiol groups A medium active ester compound, a carboxyl compound that crosslinks an amino group and a carboxyl group, and the like are conveniently used.
- an active ester reagent having a dithiopyridyl group on one of the amino groups for example, N-succinimidyl (SPDP) 3- (2-pyridyldithio) propionate
- SPDP N-succinimidyl
- a thiol group can be introduced, and after the maleimide group is introduced into the other amino group with a maleimide active ester reagent, both can be reacted.
- the immunogen of the present invention When administering the antigen of the present invention, the immunogen of the present invention is mixed with an adjuvant such as Freund's complete adjuvant, Freund's incomplete adjuvant, Alum, Ribi adjuvant or the like in order to enhance the antibody producing ability of the immunized animal. May be administered to the animal. Administration is usually once every 2 to 6 weeks, for a total of 2 to 10 times.
- an adjuvant such as Freund's complete adjuvant, Freund's incomplete adjuvant, Alum, Ribi adjuvant or the like in order to enhance the antibody producing ability of the immunized animal. May be administered to the animal. Administration is usually once every 2 to 6 weeks, for a total of 2 to 10 times.
- DNA immunization may be used (see, for example, Nature, 356, pp. 152-154).
- warm-blooded animals used include monkeys, rabbits, dogs, guinea pigs, mice, rats, hamsters, hidges, goats, camels, llamas, and chickens, but mice and rats are preferably used. .
- These warm-blooded animals may be wild-type animals or K0 animals in which the warm-blooded animal ortholog gene of the antigen protein is knocked out in order to obtain a stronger immune response to the antigen.
- a transgenic animal in order to prepare a human monoclonal antibody, a transgenic animal (see European Patent Publication EP0546073) knocked-in a warm-blooded animal antibody gene and introduced the human antibody gene (W0 02/098217) Gazette, W0 03/020743 gazette) or the like.
- Monoclonal antibody-producing hybridomas can be prepared by fusing with other myeloma cells.
- the antibody titer in the antiserum can be measured by any method that can quantify the amount of antibody that specifically binds to the antigen. For example, as described below, after reacting a solid-phased protein antigen or antigen-expressing cell line with antiserum, the antibody titer is determined by i. It can be measured.
- the fusion operation can be carried out according to known methods, for example, the method of Köhler and Milstein [Nature, 256, 495 (1975)]. Examples of the fusion promoter include polyethylene glycol (PEG) and Sendai virus, but preferably PEG is used.
- myeloma cells include warm-blooded animal myeloma cells such as NS-1, P3U1, SP2 / 0, AP-1, and SP2 / 0 and P3U1 are preferably used.
- the preferred ratio between the number of antibody-producing cells (spleen cells) and the number of myeloma cells used is about 1: 1 to 20: 1, and PEG (preferably PEG1000 to PE G6000) is added at a concentration of about 10 to 80%.
- the cell fusion can be efficiently carried out by incubating at 20 to 40 ° C., preferably 30 to 37 ° C. for 10 to 10 minutes.
- an electrofusion method may be used as a cell fusion operation for producing monoclonal antibody-producing cells.
- the selection of the hybridoma can be performed according to a method known per se or a method analogous thereto. Usually, it can be performed in a medium for animal cells supplemented with HAT (hypoxanthine, aminopterin, thymidine).
- HAT hyperxanthine, aminopterin, thymidine
- any medium can be used as long as the hybridoma can grow.
- RPMI 1640 medium containing 1-20%, preferably 10-20% fetal calf serum, GIT medium containing 1-10% fetal calf serum (Wako Pure Chemical Industries, Ltd.) or hybridoma
- a serum-free medium for culture (S FM_101, Nissui Pharmaceutical Co., Ltd.) can be used.
- the culture temperature is usually 20 to 40 ° C, preferably about 37 ° C.
- the culture time is usually 5 days to 3 weeks, preferably 1 to 2 weeks. Cultivation can usually be performed under 5% carbon dioxide. '' Various methods can be used to screen monoclonal antibody-producing hybridomas.For example, soluble protein antigens and protein antigen-expressing cells can be directly
- a hybridoma culture supernatant is added to a solid phase (eg, a microplate) adsorbed with a carrier, and then an anti-immunoglobulin antibody (eg, for cell fusion) labeled with a radioactive biomaterial, enzyme, fluorescent substance, etc.
- a solid phase eg, a microplate
- an anti-immunoglobulin antibody eg, for cell fusion
- anti-mouse immunoglobulin antibodies are used) or by reacting protein A to detect monoclonal antibodies bound to the solid phase, or by adsorbing anti-immunoglobulin antibodies or protein A
- the antigen-specific monoclonal antibody bound to the solid phase is detected by adding the hybridoma culture supernatant to the solid phase and then reacting the soluble protein antigen labeled with a radioactive substance, enzyme, fluorescent substance, etc. The method etc. are mentioned.
- a protein antigen-expressing cell When using a protein antigen-expressing cell, add a hybridoma culture supernatant to the cell, then react with a fluorescent-labeled anti-immunoglobulin antibody, and then use a fluorescence detector such as a flow cytometer to detect the cell. By measuring the fluorescence intensity, monoclonal antibodies bound to the protein antigen on the cell membrane can be detected.
- a fluorescence detector such as a flow cytometer
- the method for producing the antibody of the present invention is not limited to the method described in (a).
- humans are warm-blooded animals (for example, monkeys, rabbits, dogs, guinea pigs, mice, rats, hamsters, Hedges,
- An antibody gene library prepared by known methods using B lymphocytes (such as goats, camels, llamas, and chickens) as a material, cell surfaces of bacteriophage, E. coli, yeast, animal cells, etc.
- B lymphocytes such as goats, camels, llamas, and chickens
- the so-called antibody display technology presented in can be used.
- the human warm-blooded animal may be a na ⁇ ve animal, a cancer patient highly expressing the antigen of the present invention, or the antigen of the present invention described in (a). It may be a warm-blooded animal immunized with Examples of antibody forms to be presented on the cell surface include, but are not limited to, IgG molecules, IgM molecules, Fab fragments, single-chain Fv (scFv) fragments, and the like.
- the gene of the monoclonal antibody (fragment) that specifically binds to the antigen of the present invention is an antibody (fragment) presenting cell or antibody (fragment) presenting ribosome carrying the above-mentioned antibody gene library. After reacting for a certain period of time and washing away non-specifically bound ones, the one that specifically binds to the antigen of the present invention is eluted and recovered, and the antibody (fragment) -presenting cell or antibody (fragment) is recovered.
- the antibody of the present invention can be obtained by immunizing antibody-producing cells isolated from the above-mentioned warm-blooded animals with the antigen of the present invention in a test tube by a method known per se, and then the same method as described in (a) Can also be obtained by preparing a high-pridor.
- the monoclonal antibody of the present invention includes the monoclonal antibody-producing hybridoma obtained in (a), the antibody gene isolated by a known method from the monoclonal antibody-producing hybridoma obtained in (a), and (b). It can be produced by culturing a recombinant cell line in which the obtained monoclonal antibody gene is artificially expressed.
- the antibody gene can also be produced by incorporating it into the chromosome of a warm-blooded animal or plant by a known method and producing it in the blood, milk, egg, plant body, brute, etc. of the warm-blooded animal [Curr. Op in. Biotevhnol. 7, 536 (1996), Nature Rev. Genet 4, 794 (2003), Appl.
- the monoclonal antibody of the present invention is a known method from the above-mentioned monoclonal antibody-containing raw material, for example, an immunoglobulin separation and purification method [eg, salting-out method, alcohol precipitation method, isoelectric point precipitation method, ionic exchange method, Mouthmatography, hydrophobic interaction chromatography, reverse phase chromatography, gel filtration chromatography, hydroxyapatite chromatography, antigen or a carrier that has affinity for antibodies such as protein A or protein G Various types of chromatography such as affinity chromatography that separates and purifies only antibodies].
- an immunoglobulin separation and purification method eg, salting-out method, alcohol precipitation method, isoelectric point precipitation method, ionic exchange method, Mouthmatography, hydrophobic interaction chromatography, reverse phase chromatography, gel filtration chromatography, hydroxyapatite chromatography, antigen or a carrier that has affinity for antibodies such as protein A or protein G
- Examples of the medicament containing the antibody of the present invention described above include cancer (eg, colon cancer, breast cancer, lung).
- cancer eg, colon cancer, breast cancer, lung.
- Therapeutic agents preferably preventive or therapeutic agents for breast cancer, lung cancer, colon cancer, prostate cancer, ovarian cancer, knee cancer, etc.
- cancer cell apoptosis promoter cancer cell growth inhibitor
- cancer cell adhesion inhibitor cancer cell adhesion inhibitor
- cancer cytotoxicity agent using biocidal mechanism through Fc region of antibody, antibody-dependent cancer cytotoxicity agent, etc. be able to.
- Cancer cell damage methods utilizing the defense mechanism of the antibody through the Fc region include antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cell damage.
- ADCC antibody-dependent cell-mediated cytotoxicity
- CDC complement-dependent cell damage
- ADCC is preferably used.
- the medicine containing the antibody of the invention has low toxicity, and can be used as a liquid or as a pharmaceutical composition of an appropriate dosage form as a human or mammal (eg, rat, rabbit, sheep, pig, ushi, cat). , Inu, monkeys, etc.) or orally (eg, intravascular administration, subcutaneous administration, etc.).
- a human or mammal eg, rat, rabbit, sheep, pig, ushi, cat.
- orally eg, intravascular administration, subcutaneous administration, etc.
- the antibody of the present invention may be administered per se or as an appropriate pharmaceutical composition.
- the pharmaceutical composition used for administration may contain the antibody of the present invention or a salt thereof and a pharmacologically acceptable carrier, diluent or excipient.
- a pharmaceutical composition is provided as a dosage form suitable for oral or parenteral administration.
- injections and suppositories are used as parenterals for parenteral administration, and injections are intravenous injections, subcutaneous injections, intradermal injections, intramuscular injections, infusions, etc. May be included.
- Such an injection can be prepared according to a known method.
- a method for preparing an injection it can be prepared, for example, by dissolving, suspending or emulsifying the antibody of the present invention or a salt thereof in a sterile aqueous liquid or oily liquid usually used for injection.
- aqueous solution for injection for example, physiological saline, isotonic solution containing glucose and other adjuvants, etc.
- solubilizers such as alcohol (eg, ethanol), polyalcohol (eg, , Propylene glycol, polyethylene glycol), nonionic surfactants (eg, polysorbate 80, HCO-50 (.polyoxyethylene 50mol) adduct of hydrogenated castor oilj J etc.
- oily liquid for example, sesame oil, soybean oil or the like is used, and benzyl benzoate, benzyl alcohol or the like may be used in combination as a solubilizing agent.
- the prepared injection solution is preferably filled in a suitable ampoule.
- a suppository used for rectal administration may be prepared by mixing the above-mentioned antibody or a salt thereof with an ordinary suppository base. '
- compositions for oral administration include solid or liquid dosage forms, specifically tablets (including dragees and film-coated tablets), pills, granules, powders, capsules (soft capsules) ), Syrups, emulsions, suspensions, etc.
- Such a composition is produced by a known method, and may contain a carrier, a diluent, or an excipient usually used in the pharmaceutical field.
- a carrier and excipient for tablets for example, lactose, starch, sucrose, and magnesium stearate are used.
- parenteral or oral pharmaceutical compositions are conveniently prepared in dosage unit form to suit the dosage of the active ingredient.
- dosage form of such a dosage unit include fixed agents, pills, capsules, injections (ampoules), and suppositories.
- the content of antibody, per dosage unit form typically 5 to 500 mg, especially at the injection 5 to 100 m g, it is preferable that the antibody of 10 ⁇ 250mg is contained in the other dosage form.
- the dose of the above-mentioned prophylactic / therapeutic agent / modulating agent containing the antibody of the present invention varies depending on the administration subject, target disease, symptom, administration route, etc. If you want to do this, use the anti-free book of the present invention as a single dose. ⁇ 20mg / kg body weight, preferably 0 :! It is convenient to administer about 10 to 10 mg / kg body weight, more preferably about 0.1 to 5 mg / kg body weight by intravenous injection about 1 to 5 times a day, preferably about 1 to 3 times a day. . In the case of other parenteral administration and oral administration, an equivalent amount can be administered. If symptoms are particularly severe, the dose may be increased according to the symptoms.
- the antibody of the present invention can be administered per se or as an appropriate pharmaceutical composition.
- the pharmaceutical composition used for the administration comprises the antibody or a salt thereof and a pharmacologically acceptable carrier, diluent or excipient.
- a composition is provided as a dosage form suitable for oral or parenteral administration (eg, intravascular injection, subcutaneous injection, etc.).
- compositions may contain other active ingredients as long as they do not cause an unfavorable interaction by blending with the antibody.
- the antibody of the present invention may be used for other drugs such as alkyl hydride (eg, cyclophosphamide, ifosfamide, etc.), antimetabolite (eg, methotrexate, 5-fluorouracil, etc.), anticancer antibiotic (eg, For example, mitomycin, adriamycin, etc.), plant-derived anticancer agents (eg, vincristine, vindesine, taxol, etc.), cisplatin, carpoplatin, etopoxide, irinotecan, etc.
- the antibody of the present invention and the drug may be administered to the patient at the same time or at different times.
- the antibody of the present invention can specifically recognize Nectin-2, it can be used for quantification of Nectin-2 in a test solution, particularly quantification by Sandwich immunoassay.
- the antibody of the present invention is competitively reacted with a test solution and labeled Nectin-2, and the ratio of labeled Nectin-2 bound to the antibody is measured. Quantitative determination of Nectin-2 in the test solution,
- test solution is reacted with the antibody of the present invention insolubilized on the carrier, and the quantitative change of Nectin-2 bound to the insolubilized carrier is measured by, for example, surface plasmon resonance
- antibodies having different binding sites for Nectin-2 are preferably used.
- Nectin_2 In addition to quantification of Nectin_2 using the antibody of the present invention, detection by tissue staining or the like can also be performed.
- the antibody molecule itself may be used, or the F (ab ′) 2 , F ab ′, or F ab fraction of the antibody molecule may be used.
- the method for quantifying Nectin-2 using the antibody of the present invention is not particularly limited, and an antibody, antigen, or antibody-antigen complex corresponding to the amount of antigen (eg, amount of protein) in the solution to be measured is not limited. Any measurement method may be used as long as it is a measurement method in which the amount is detected by a chemical or physical means and calculated from a standard curve prepared using a standard solution containing a known amount of an antigen. For example, nephrometry, competition method, immunometric method, SPR method and sandwich method are preferably used, but the sandwich method described below is particularly preferable in terms of sensitivity and specificity.
- Examples of the labeling agent used in the measurement method using the labeling substance include radioisotopes, enzymes, fluorescent substances, and luminescent substances.
- radioisotopes for example, [ 1 2 5 I], [ 1 3 1 I], [ 3 H], ["C], etc. are used as the releaseable isotopes.
- Enzymes are stable and have high specific activity.
- ⁇ -galatatosidase, ⁇ -dalcosidase, alkaline phosphatase, peroxidase, malate dehydrogenase, etc. are used as fluorescent substances, for example, cyanine fluorescent dyes (eg, Cy2, Cy3, Cy5).
- insolubilization of an antigen or antibody physical adsorption may be used, or a method of using a chemical bond usually used for insolubilizing or immobilizing a protein or an enzyme may be used.
- these proteins may be biotin-labeled and streptavidin (avidin) may be bound to a previously insolubilized carrier.
- avidin streptavidin
- protein A, protein G, anti-imnoggroglin antibody and the like may be bound to a carrier that has been insoluble in advance.
- the carrier include insoluble polysaccharides such as agarose, dextran, and cellulose, synthetic resins such as polystyrene, polyacrylamide, and silicon, or glass.
- the test solution is reacted with the insoluble antibody of the present invention (primary reaction), and another labeled antibody of the present invention is reacted (secondary reaction), and then on the insolubilized carrier.
- primary reaction the insoluble antibody of the present invention
- secondary reaction another labeled antibody of the present invention
- the amount of the protein of the present invention in the test solution by measuring the activity of the labeling agent
- the primary reaction and the secondary reaction may be performed in the reverse order, or may be performed simultaneously or at different times.
- the labeling agent and the insolubilizing method can be the same as those described above.
- the antibody used for the solid phase antibody or the labeling antibody is not necessarily one type, and a mixture of two or more types of antibodies for the purpose of improving measurement sensitivity or the like. May be used.
- antibodies having different Nectin-2 binding sites are preferably used as the antibodies of the present invention used in the primary reaction and the secondary reaction.
- the antibody of the present invention can be used in a measurement system other than the sandwich method, for example, a competitive method, an immunometric method, an SPR method, or nephrometry.
- the antigen in the test solution and the labeled antigen are reacted competitively with the antibody, and then the unreacted labeled antigen (F) and the labeled antigen (B) bound to the antibody are separated.
- B / F separation Measure the amount of either B or F label and quantify the amount of antigen in the test solution.
- a soluble antibody is used as an antibody
- a BZF separation is made of polyethylene glycol
- a solid-phased antibody is used as the first antibody.
- One antibody is soluble
- the second antibody is a solid phase method using a solid phase antibody.
- the ability to separate the solid phase from the liquid phase after competitively reacting the antigen in the test solution and the immobilized antigen to a certain amount of labeled antibody, or in the test solution After reacting this antibody with an excessive amount of labeled antibody, the solid phase antigen is added and unreacted labeled antibody is bound to the solid phase, and then the solid phase and the liquid phase are separated. Next, the amount of label in either phase is measured to quantify the amount of antigen in the test solution.
- nephrometry In nephrometry, the amount of insoluble precipitate produced as a result of antigen-antibody reaction in gel or solution is measured. Laser nephrometry using laser scattering even when the amount of antigen in the test solution is small and only a small amount of sediment is obtained.
- Nectin-2 measurement system should be constructed by adding the usual technical considerations of those skilled in the art to the usual conditions and procedures for each method. For details of these general technical means, you can refer to reviews and textbooks.
- Nectin-2 can be quantified with high sensitivity by using the antibody of the present invention.
- Nectin-2 when an increase in the concentration of Nectin-2 is detected by quantifying the concentration of Nectin-2 using the antibody of the present invention, for example, cancer (eg, colon cancer, breast cancer, lung cancer, prostate cancer, esophagus) Cancer, stomach cancer, liver cancer, biliary tract cancer, spleen cancer, kidney cancer, bladder cancer, uterine cancer, oval cancer, testicular cancer, thyroid cancer, knee cancer, brain tumor, blood tumor, etc.) or may be affected in the future It can be diagnosed that 1 ⁇ 2 ⁇ is high.
- cancer eg, colon cancer, breast cancer, lung cancer, prostate cancer, esophagus
- stomach cancer liver cancer, biliary tract cancer, spleen cancer, kidney cancer, bladder cancer, uterine cancer, oval cancer, testicular cancer, thyroid cancer, knee cancer, brain tumor, blood tumor, etc.
- the antibody of the present invention can also be used to detect Nectin-2 present in a subject such as a body fluid or tissue.
- preparation of antibody ram used to purify Nectin-2, detection of Nectin-2 contained in each fraction during purification, analysis of Nectin-2 behavior in test cells, etc. Can be used for.
- a monoclonal antibody produced by a hybridoma cell (hereinafter sometimes referred to as an antibody used in the present invention) can be used.
- the antibodies used in the present invention include genetically engineered antibodies (including antibody fragments) having specific CDR amino acid sequences or variable region amino acid sequences of antibodies produced by these hyperides.
- variable regions on the N-terminal side of the heavy and light chains of the antibody called the heavy chain variable region (V H ) and the light chain variable region (VJ.
- V H variable region
- VJ variable region
- CDR Complementarity within the variable region.
- the other part of the variable region other than CDR has the role of maintaining the structure of CDR, and the framework region ( FR)
- C H heavy chain constant region
- CL light chain constant region
- CDR 1 complementarity determining region
- CDR 2 complementarity determining region
- CDR 3 complementarity determining region
- the three complementarity determining regions in the variable region are collectively referred to as the heavy chain complementarity determining region.
- CDR 3 complementarity determining region
- the sex determining region is collectively referred to as the light chain complementarity determining region.
- amino acid sequence and base sequence of CDR of the antibody used in the present invention are shown in Tables 2 to 24 described below, respectively.
- the amino acid sequences of the first complementarity determining region (CDR1), the second complementarity determining region (CDR2) and the third complementarity determining region (CDR3) of the antibody heavy chain variable region are (I) SEQ ID NO: from 184, 200, 216, 232, 248, 264, 280 and 296, (ii) SEQ ID NO: from 185, 201, 217, 233, 249, 265, 281 and 297 SEQ ID NO: selected from the group consisting of (iii) SEQ ID NO: identical to the amino acid sequence represented by the SEQ ID NO: selected from the group consisting of 186, 202, 218, 234, 250, 266, 282 and 298 It has the amino acid sequence of
- the amino acid sequences of the first complementarity determining region (CDR 1), the second complementarity determining region (CDR 2) and the third complementarity determining region (CDR3) of the antibody light chain variable region respectively.
- V SEQ ID NO: 193, 209, 225, 241, 257, 273 SEQ ID NO: selected from the group consisting of, 289 and 305
- an amino acid sequence represented by SEQ ID NO: selected from the group consisting of SEQ ID NO: 194, 210, 226, 242, 258, 274, 290 and 306 Have
- the amino acid sequence other than CDR is not particularly limited, and an amino acid sequence other than CDR is derived from another antibody, in particular, a so-called CDR-grafted antibody used in the present invention. Included in the antibody.
- the amino acid sequence other than CDR is preferably a human-derived amino acid sequence, with one to several amino acid residues added, deleted, substituted, or inserted or inserted into the framework region (FR) as necessary. It may be.
- the amino acid sequence and the nucleotide sequence of the antibody variable region are preferably those shown in Table 25.
- a monoclonal antibody containing a specific CDR amino acid sequence or variable region amino acid sequence of an antibody used in the present invention can be prepared by a known method.
- a genetically engineered antibody (including antibody fragments) having a specific CDR amino acid sequence or variable region amino acid sequence of an antibody produced by these hybridomas, and competitive with Nectin-2
- a monoclonal antibody that binds (hereinafter also referred to as an antibody that competitively binds to the antibody used in the present invention) can be obtained as follows.
- Examples of the antigen used for preparing an antibody that competitively binds to the antibody used in the present invention include, for example, a protein containing an amino acid sequence represented by SEQ ID NO: 1 or self-sequence number: 3 ( Nectin-2) or a partial peptide thereof or a salt thereof, a cell line that naturally or artificially highly expresses a protein (Nectin_2) containing the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 3.
- Any peptide such as an animal cell expression vector containing the peptide represented by SEQ ID NO: 2 or SEQ ID NO: 4 or a partial nucleotide sequence thereof can be used. (Hereinafter, sometimes referred to as the antigen used to simply to the present invention).
- Fc regions such as FLAG-tag, His-tag, Myc-tag, V5-tag, GST-tag, S-tag, T7-tag, human antibody, mouse antibody, etc. Can be mentioned.
- the length of the peptide having the same antigenic determinant as Nectin-2 used to prepare an antibody that competitively binds to the antibody used in the present invention is particularly long as long as it is immunogenic.
- Non-limiting examples include those having 6, for example, preferably 10, and more preferably 12 consecutive amino acid residues.
- ectin-2 at least 20 of the constituent amino acid sequences, preferably 50 or more, more preferably 70 or more, more preferably 100 or more, most preferably 200 Peptides having more than one amino acid sequence are used.
- Nectin-2 or a partial peptide thereof or a salt thereof can be produced from the aforementioned human warm-blooded animal cells or tissues by a known protein purification method or a method analogous thereto, or a protein encoding D It can also be produced by culturing a transformant containing NA. It can also be produced according to the peptide synthesis method described below.
- a fusion protein of the extracellular region of Nectin-2 and other protein or peptide can be produced by culturing a transformant containing DNA encoding the fusion protein.
- the antigen described in (i) is administered to a warm-blooded animal.
- any method can be used as long as it can promote antibody production.
- Intravenous injection, intraperitoneal injection, intramuscular injection, subcutaneous injection, intradermal injection, or footpad injection is preferable.
- the antigen used in the present invention can be directly immunized with an insolubilized antigen, or immunized with a complex in which the antigen is bound or adsorbed to an appropriate carrier.
- the antigen used in the present invention is mixed with an adjuvant such as Freund's complete adjuvant, Freund's incomplete adjuvant, Alum, Ribi adjuvant or the like in order to enhance the antibody-producing ability of the immunized animal.
- an adjuvant such as Freund's complete adjuvant, Freund's incomplete adjuvant, Alum, Ribi adjuvant or the like in order to enhance the antibody-producing ability of the immunized animal.
- An emulsion may be prepared and administered to the animal.
- warm-blooded animals that can be used include Sanore, Usagi, Inu, Monoremot, Mouse, Rat, Hamster, Hedge, Goat, Camel, Llama, and Chicken, but mouse and rat are preferred. It is done.
- a K0 animal in which the warm-blooded animal ortholog gene of the antigen protein is knocked out in order to obtain a stronger immune response to the antigen may be used.
- a transgenic animal European Patent Publication
- the antibody gene of a warm-blooded animal is knocked out and the human antibody gene is introduced.
- Knock-in animals (W0 02/098217, W0 03/020743) etc. may be used.
- Monoclonal antibody-producing hybridomas can be prepared by fusing the antibody-producing B cells to be fused with allogeneic or xenogeneic bone marrow heavy cells.
- myeloma cells include bone marrow cells of warm-blooded animals such as NS-1, P 3 U 1, SP 2/0, AP-1, and SP 2/0 and P 3 U 1 are preferred. Used. The selection of hypridoroma can be performed according to a method known per se or a method analogous thereto.
- the method for producing the antibody is not limited to the above-mentioned method.
- a human-blooded animal e.g., rabbit / rabbit, rabbit, inu, monoremot, mouse, rat, hamster, hedge, h.
- Antibody gene library prepared by known methods using B lymphocytes (eg, moths, camels, llamas, and -birds) on the surface of ribosomes, pacteriophages, Escherichia coli, fermenters, animal cells, etc.
- B lymphocytes eg, moths, camels, llamas, and -birds
- the so-called antibody display technology can be used.
- the naive and warm-blooded animals may be naive, cancer patients who highly express the antigen used in the present invention, and antigens used in the present invention ( Warm blood immunized by the method described in a)
- an antibody form to be presented on the cell surface includes, but is not limited to, an IgG molecule, an IgM molecule, a Fab fragment, and a single chain Fv (scFv) fragment.
- the gene of the monoclonal antibody (fragment) that specifically binds to the antigen used in the present invention is the antigen (fragment) presenting cell or antibody (fragment) presenting ribosome carrying the antibody gene library described above. And then reacting for a certain period of time, washing away non-specifically bound substances, elution and recovering those that specifically bind to the antigen used in the present invention, and presenting the antibody (fragment) cells or antibodies (fragments) ) After the display ribosome is propagated by a known method, the same method is repeated several times, and finally the antibody (fragment) -presenting cell cloned or the antibody (fragment) -presenting ribosome is isolated by a known method. Is obtained. Monoclonal IgG antibody genes can be obtained by recombining the thus obtained monoclonal antibody fragment genes with the IgG antibody gene regions by a known method.
- a monoclonal antibody containing an amino acid sequence substantially the same as the specific CDR amino acid sequence or variable region amino acid sequence of the antibody used in the present invention can also be obtained by genetic engineering.
- amino acid sequence A substantially the same as the specific CDR amino acid sequence or variable region amino acid sequence (hereinafter referred to as amino acid sequence A) of the antibody used in the present invention is about 50% with amino acid sequence A. %, Preferably about 60% or more, more preferably about 70% or more, more preferably about 80% or more, more preferably about 90% or more, particularly preferably about 95% or more. And amino acid sequences having properties. '
- Examples of the monoclonal antibody containing substantially the same amino acid sequence as the amino acid sequence A include, for example: (i) one or more of the amino acid sequence A (for example, about 1 to 50, preferably Is about 1-30, more preferably about 1-10,
- amino acid sequence A for example, about 1 to 50, preferably 1) About 30 amino acids, more preferably about 1 to 10 amino acids, more preferably a number (1-5) amino acids added, (iii) one or more amino acid sequences A (for example 1 ⁇ 50, preferably 1 to 30, more preferably 1 to 10, more preferably 1 to several (eg, 1 to 5) amino acids with an inserted amino acid Sequence, (iv) one or more of amino acid sequence A (for example, about 1 to 50, preferably about 1 to 30, more preferably about 1 to 10, more preferably 1 to An amino acid sequence in which several (for example, 1 to 5) amino acids are replaced with other amino acids, or (V) Such antibodies that contain Amino acid sequences seen combined also included.
- the antibody used in the present invention is prepared by immunizing antibody-producing cells isolated from the above-mentioned warm-blooded animals with the antigen used in the present invention in a test tube by a method known per se, and then preparing a hyperidoma. It can also be obtained by things.
- the monoclonal antibody used in the present invention includes the monoclonal antibody-producing hybridoma obtained in (a), the antibody gene isolated by a known method from the monoclonal antibody-producing hybridoma obtained in (a), and (b) It can be produced by culturing a recombinant cell line in which the monoclonal antibody gene obtained in (1) has been artificially expressed.
- the antibody gene can also be produced by incorporating into a chromosome of a warm-blooded animal or plant by a known method and producing it in the blood, milk, egg, plant body, mold, etc. of the warm-blooded animal [Curr. Opin. Biotevhnol. 7, 536 (1996), Nature Rev. Genet 4, 794 (2003), Appl.
- soluble protein antigens or protein antigen-expressing cells can be adsorbed directly or together with a carrier on a solid phase (eg, microplate).
- a carrier on a solid phase eg, microplate.
- An anti-immunoglobulin antibody for example, if the spleen cells used for cell fusion are mice, and then labeled with radioactive substances, enzymes, fluorescent substances, etc. or Bound to the solid phase by reacting protein A
- the monoclonal antibody used in the present invention is a method known per se from the above-mentioned monoclonal antibody-containing raw material, for example, an immunoglobulin separation and purification method [eg, salting-out method, alcohol precipitation method, isoelectric point precipitation method, ion exchange method, etc. Chromatography, hydrophobic interaction chromatography, reverse phase chromatography-gel filtration chromatography, hydroxyapatite chromatography, antigen or a carrier that has affinity for antibodies such as protein A or protein G Various chromatographies such as affinity chromatography for separating and purifying only antibodies].
- an immunoglobulin separation and purification method eg, salting-out method, alcohol precipitation method, isoelectric point precipitation method, ion exchange method, etc.
- An antibody that competitively binds to the antibody used in the present invention can be obtained by screening by a measurement method that measures whether or not it binds competitively to Nectin-2.
- Nectin-2 used for screening refers to an amino acid sequence represented by SEQ ID NO: 1 (hereinafter abbreviated as Nectin-2) or an amino acid sequence represented by SEQ ID NO: 3 (hereinafter referred to as Nectin- (Hereinafter abbreviated as 2 S) (hereinafter, both may be referred to as Nectin-2 or a protein used in the present invention). It may be a protein derived from human warm-blooded animal cells or tissues, or it may be a recombinant protein.
- Nectin-2 includes those in which the C-terminal carboxyl group is esterified or amidated, the N-terminal amino acid residue (eg, methionine residue) is protected with a protecting group, N-terminal side cleaved in vivo with a glutamine residue produced by pyroglutamate, a substituent on the amino acid side chain in the molecule protected with an appropriate protecting group, or a sugar chain attached It also includes complex peptides such as so-called glycopeptides and takes the form of salts such as physiologically acceptable acids (eg, inorganic acids, organic acids) and bases (eg, alkali metal salts). Also good.
- physiologically acceptable acids eg, inorganic acids, organic acids
- bases eg, alkali metal salts
- “competitively binding antibody” refers to an antibody in which binding to Nectin-2 is competitively inhibited by adding an excess amount of any of the antibodies used in the present invention. Specifically, when the test antibody is subjected to a binding test for Nectin-2, the test is carried out when a 50-fold molar amount of any of the antibodies used in the present invention is added to the test antibody. An antibody in which the binding of the antibody to Nectin-2 is inhibited by 50% or more.
- the antibodies used in the present invention include chimeric antibodies, humanized antibodies, and human antibodies.
- “Chimeric antibody” means an antibody having a variable region derived from a heterologous antibody and a human antibody constant region (see, eg, European Patent Publication EP 0 1 2 5 023 etc.).
- a “humanized antibody” is an antibody obtained by modifying an antibody that is different from that of a human, such as a mouse, and replacing the primary structure other than the complementarity determining part of the H and L chains with the corresponding primary structure of the human antibody. To tell.
- Human antibody refers to a monoclonal antibody produced using a transgenic animal into which a human antibody gene has been introduced (see European Patent Publication EP 0 5 4 6 0 7 3) and a human antibody gene. Against the surface of cells such as pacteriophage, E. coli, yeast, animal cells, and ribosomes, monoclonal antibodies (Nature Biotechnology 23, 1105 (2005)) and Nectin-2 produced using so-called antibody display technology This means a monoclonal antibody isolated using techniques such as human B-cell fusion method that produces antibodies and fuzzy display method.
- the antibody used in the present invention is preferably a monoclonal antibody whose antibody constant region is a human antibody, more preferably human IgG, and more preferably a human IgG1 subclass.
- the above-mentioned pharmaceuticals containing the antibody used in the present invention or an antibody that binds to Nectin-2 competitively with the antibody used in the present invention is a preventive / therapeutic agent for breast cancer, biological defense through the Fc region of the antibody. It can be used as a preventive or therapeutic agent for breast cancer utilizing a mechanism, an antibody-dependent breast cancer cytotoxic agent, and the like.
- Breast cancer cell damage methods using the defense mechanism through the Fc region of antibodies include antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cells. Although there is a disorder-dependent activity (Complement-Dependent Cytotoxicity; CDC), ADCC is preferably used.
- a drug containing an antibody used in the present invention or an antibody that competitively binds to the antibody used in the present invention has low toxicity, and it is used as a solution or as a medicinal thread and compound of an appropriate dosage form as a human. Or given to mammals (eg, rats, rabbits, hidges, pigs, mice, cats, innu, monkeys, etc.) orally or parenterally (eg, intravascular, subcutaneous administration, etc.) it can.
- mammals eg, rats, rabbits, hidges, pigs, mice, cats, innu, monkeys, etc.
- parenterally eg, intravascular, subcutaneous administration, etc.
- the antibody used in the present invention or the antibody that competitively binds to the antibody used in the present invention may be administered per se, or may be administered as an appropriate pharmaceutical composition.
- the pharmaceutical composition used for administration may contain the antibody and its salt used in the present invention and a pharmacologically acceptable carrier, diluent or excipient. Such a pharmaceutical composition is provided as a dosage form suitable for oral or parenteral administration.
- injections are agents such as intravenous injections, subcutaneous injections, intradermal injections, intramuscular injections, intravenous infusions, etc. It may include a shape.
- Such an injection can be prepared according to a known method.
- a method for preparing an injection it can be prepared, for example, by dissolving, suspending or emulsifying the antibody of the present invention or a salt thereof in a sterile aqueous liquid or oily liquid usually used for injection.
- an aqueous solution for injection for example, physiological saline, isotonic solutions containing glucose and other adjuvants, etc.
- solubilizers such as alcohol (eg, ethanol), polyalcohol (eg, , Propylene glycol, polyethylene glycol), nonionic surfactants (eg, polysorbate 80, HCO—50 ⁇ polyoxyethylene (50 mol) adduct of hydrogenated castor oil) J, etc.
- oily liquid and L for example, sesame oil, soybean oil or the like is used, and benzyl benzoate, benzyl alcohol or the like may be used in combination as a solubilizing agent.
- the prepared injection solution is preferably filled in a suitable ampoule.
- a suppository used for rectal administration may be prepared by mixing the above-mentioned antibody or a salt thereof with an ordinary suppository base.
- compositions for oral administration include solid or liquid dosage forms, specifically tablets (including dragees and film-coated tablets), pills, granules, powders, capsules (soft capsules) ), Syrups, emulsions, suspensions, etc.
- Such a composition is produced by a known method, and may contain a carrier, a diluent, or an excipient usually used in the pharmaceutical field.
- a carrier and excipient for tablets for example, lactose, starch, sucrose, and magnesium stearate are used.
- the above parenteral or oral pharmaceutical compositions are conveniently prepared in dosage forms suitable for the dosage of the active ingredient.
- Examples of the dosage form of such a dosage unit include tablets, pills, capsules, injections (ampoules), and suppositories.
- the content of the antibody used in the present invention or the antibody that competitively binds to the antibody used in the present invention is usually 5 to 500 mg per dosage unit dosage form, especially 5 to 100 mg for injections, and other dosage forms. Then, it is preferable that 10 to 250 mg of the above antibody is contained.
- the dose of the prophylactic / therapeutic agent and modulator containing the antibody used in the present invention or the antibody that competitively binds to the antibody used in the present invention depends on the administration subject, target disease, symptom, administration route, etc.
- the dose of the antibody used in the present invention or the antibody that competitively binds to the antibody used in the present invention is usually About 0.1 ⁇ 20 mg / kg body weight, preferably about 0.1 to 10 mg / kg body weight, more preferably about 0.1 to 5 mg / kg body weight, about 1 to 5 times a day, preferably 1 to 1 day It is convenient to administer about 3 times by intravenous injection. In the case of other parenteral administration and oral administration, an equivalent amount can be administered. If symptoms are particularly severe, the dose may be increased according to the symptoms.
- the antibody used in the present invention or the antibody that competitively binds to the antibody used in the present invention can be administered per se or as an appropriate pharmaceutical composition.
- the pharmaceutical composition used for the administration is a pharmacologically acceptable carrier with the antibody or salt thereof.
- Such a yarn composition is provided as a dosage form suitable for oral or parenteral administration (eg, intravascular injection, subcutaneous injection, etc.).
- parenteral administration eg, intravascular injection, subcutaneous injection, etc.
- Each of the above-described compositions may contain other active ingredients as long as they do not cause an unfavorable interaction by blending with the antibody.
- the antibody used in the present invention or the antibody that competitively binds to the antibody used in the present invention may be other drugs such as alkylating agents (eg, cyclophosphamide, ifamide), antimetabolites ( E.g. methotrexate, 5-fluorouracil, gencitabine, etc.) stake cancer antibiotics (e.g., mitomycin, adriamycin, etc.), plant-derived anticancer agents (e.g., vincristine, vindesine, paclitaxel, docetaxel, etc.), hormone therapy (Eg, tamoxifen, anastrozole, retrozole, etc.), platinum preparations (eg, cisbratin, carbobratin, etc.), molecular targeting agents (eg, heceptin, gefitinib, imatinib, etc.), etoposide, irinotecan, etc. .
- the antibody and the drug used in the present invention may be administered to the patient at
- the present invention further includes the following inventions.
- Ne cl— 1 044— 4 (FERM BP— 1 0805), N ec 8- 3 5 1 7- 1 1 (FERM BP— 1 0 806) or N ec 8— 3 7 — 4-7 (FERM BP — 1 0 80 7) Hypridoma cells, Ne c 1-1 044-4 (F ERM BP— 1 08 0 5), Ne c 8— 35 1 7— 1 1 (FERM BP— 1 0 8 0 6) or Nec 8 _ 3 704— 7 (FERM BP— 1 0807), a monoclonal antibody produced from a hybridoma cell, Ne cl— 1 044— 4 (FERM BP— 1 08 0 5), Monoc produced from high-pridoma cells displayed as Ne c 8— 3 5 1 7- 1 1 (F ERM BP— 1 08 06) or N ec 8 -'3 704-7 (FERM BP— 1 080 7)
- the present invention relates to a monoclon
- Hypridoma cell Ne c 8— 351 7— 1 1 is April 1, 2007 Tsukuba Rakuhito, Ibaraki Pref. 1-chome 1 1 Central No. 6 (zip code 305-8566) Independent Administrative Agency National Institute of Advanced Industrial Science and Technology Patent Deposited at the biological deposit center as deposit number FERM BP-1 0806.
- Hypridor cell N ec 8-3704-7 is an independent administrative law of the National Institute of Advanced Industrial Science and Technology, patented organism from 1 April 1st, Tsukuba Tohoku, Ibaraki 1st 3rd (Postal code 305-856.6) from April 3, 2007 Deposited at the Deposit Center under the deposit number FERM BP—10 807.
- bases, amino acids, etc. are indicated by abbreviations, the labels according to the IUPAC-IUB Commission on Biochemical Nomenclature are based on the conventional abbreviations in f. To do.
- optical isomers for amino acids the L form is indicated unless otherwise specified.
- a 1 a Alanine
- S ec selenocysteine (.selenocysteine)
- SEQ ID NO of the sequence listing in the present specification indicates the following sequence.
- siRNA-1 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 20]
- siRNA-1 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 21]
- siRNA-2 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 22]
- siRNA-2 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 23]
- siRNA-3 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 24]
- siRNA-3 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 25]
- siRNA-4 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 26]
- siRNA-4 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 27)
- siRNA-5 used in Reference Example 5, Reference Example 6 and Reference Example 7 is shown. [SEQ ID NO: 28]
- SEQ ID NO: 37 shows the nucleotide sequence of DNA encoding the amino acid sequence of the Nectin—2ED—hFc protein represented by SEQ ID NO: 37.
- nucleotide sequence of the DNA encoding the amino acid sequence of the protein lacking the Igl domain of Nectin-2.
- nucleotide sequence of the DNA encoding the amino acid sequence of the protein lacking the 3 ⁇ 42 domain of Nectin-2.
- Reference Example ⁇ Shows the base sequence of primer A77G used in 34.
- FIG. 8 shows the base sequence of primer 177 used in Example 19, [SEQ ID NO: 1 78]
- Example 19 shows the base sequence of primer 179 used in 9
- Example 1 shows the base sequence of primer 180 used in 9.
- Example 1 shows the base sequence of primer 18 1 used in 9
- the CDR3 (base sequence) of the heavy chain of Necl- 244-3 is shown.
- the light chain CDR3 (amino acid sequence) of Necl-244-3 is shown.
- the CDR1 (base sequence) of the heavy chain of Necl-530-1 is shown.
- the light chain CDR2 (base sequence) of Necl-530-1 is shown.
- 1 shows the amino acid sequence of the heavy chain variable region of Necl-554-l.
- the C D R 3 (amino acid sequence) of the light chain of Necl-5554-1 is shown.
- the light chain CDR2 (base sequence) of Necl-554-1 is shown. [SEQ ID NO: 230]
- C D R 1 amino acid sequence of the heavy chain of Necl-803-2. [SEQ ID NO: 233]
- G D R 2 (amino acid sequence) of the heavy chain of Necl-803-2 is shown.
- CDR 3 amino acid sequence of the heavy chain of Necl-803-2 is shown. [SEQ ID NO: 235]
- the CDR2 (amino acid sequence) of the light chain of Necl-803-2 is shown. [SEQ ID NO: 242]
- the C D R 3 (amino acid sequence) of the light chain of Necl-803-2 is shown. [SEQ ID NO: 243]
- the light chain CDR2 (base sequence) of Necl-803-2 is shown. [SEQ ID NO: 246]
- the light chain CDR3 (base sequence) of Necl-803-2 is shown.
- the C D R 2 (amino acid sequence) of the light chain of Necl-845-2 is shown.
- the light chain CDR2 (base sequence) of Necl-845-2 is shown. [SEQ ID NO: 278]
- 1 shows the amino acid sequence of the heavy chain variable region of Necl-903-l.
- the light chain CDR1 (base sequence) of Necl-903-1 is shown. [SEQ ID NO: 293]
- Necl- 3 - 1 of the CDR 3 of the light chain shows the (nucleotide sequence). '[SEQ ID NO: 295]
- the C D R 3 (amino acid sequence) of the heavy chain of Nec8-4116-8 is shown.
- the light chain CDR 1 (amino acid sequence) of Nec8-4116-8 is shown.
- Nec 8 - of 4116- 8 light chain are shown a CDR 2 (amino acid sequence).
- the light chain CDR 3 (amino acid sequence) of Nec8-4116-8 is shown.
- the light chain CDR2 (base sequence) of Nec8-4116-8 is shown.
- the CDR3 (base sequence) of the light chain of Nec8-4116-8 is shown.
- SEQ ID NO: 312 shows the base sequence encoding the N-terminus of the signal sequence predicted from germline that matches the amino acid sequence of 312.
- SEQ ID NO: 31 This shows the base sequence encoding the N-terminus of the signal sequence predicted from germline that matches the amino acid sequence of 33-3.
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Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007307536A AU2007307536A1 (en) | 2006-10-06 | 2007-10-04 | Agent for preventing/treating cancer |
| US12/444,382 US20100008928A1 (en) | 2006-10-06 | 2007-10-04 | Agent for preventing/treating cancer |
| BRPI0717024-6A2A BRPI0717024A2 (pt) | 2006-10-06 | 2007-10-04 | Anticorpo, célula de hibridoma, agente de diagnótico, medicamento, métodos para prevenir/tratar câncer, para induzir apoptose células cancerosas , para inibir crescimento de células cancerosas e para destruir células cancerosas, uso de um anicorpo monoclonal e agente para prevenir ou tratar câncer de mama. |
| JP2008538759A JPWO2008044754A1 (ja) | 2006-10-06 | 2007-10-04 | 癌の予防・治療剤 |
| MX2009003126A MX2009003126A (es) | 2006-10-06 | 2007-10-04 | Agente para prevenir/tratar el cancer. |
| CNA2007800371476A CN101541834A (zh) | 2006-10-06 | 2007-10-04 | 癌症的预防和/或治疗剂 |
| CA002666249A CA2666249A1 (en) | 2006-10-06 | 2007-10-04 | Agent for preventing/treating cancer |
| EP07829644A EP2067791A4 (en) | 2006-10-06 | 2007-10-04 | PROPHYLACTIC OR THERAPEUTIC ACTIVE AGAINST CANCER |
| IL197389A IL197389A0 (en) | 2006-10-06 | 2009-03-03 | Prophylactic or therapeutic agent for cancer |
| TN2009000090A TN2009000090A1 (en) | 2007-04-04 | 2009-03-16 | Prophylactic or therapeutic agent for canger |
| NO20091783A NO20091783L (no) | 2006-10-06 | 2009-05-05 | Middel for a forebygge/behandle kreft |
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| Application Number | Priority Date | Filing Date | Title |
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| JPPCT/JP2006/320429 | 2006-10-06 | ||
| PCT/JP2006/320429 WO2007043635A1 (ja) | 2005-10-07 | 2006-10-06 | 癌の予防・治療剤 |
| ARP-070101453 | 2007-04-04 | ||
| ARP070101453A AR060362A1 (es) | 2005-10-07 | 2007-04-04 | Agente para prevenir / tratar el cancer |
| JP2007100876 | 2007-04-06 | ||
| JP2007-100876 | 2007-04-06 |
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| PCT/JP2007/069908 Ceased WO2008044754A1 (en) | 2006-10-06 | 2007-10-04 | Prophylactic or therapeutic agent for cancer |
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|---|---|
| US (1) | US20100008928A1 (ja) |
| EP (1) | EP2067791A4 (ja) |
| JP (1) | JPWO2008044754A1 (ja) |
| KR (1) | KR20090078339A (ja) |
| CN (1) | CN101541834A (ja) |
| AR (1) | AR063153A1 (ja) |
| AU (1) | AU2007307536A1 (ja) |
| BR (1) | BRPI0717024A2 (ja) |
| CA (1) | CA2666249A1 (ja) |
| CL (1) | CL2007002879A1 (ja) |
| CO (1) | CO6190538A2 (ja) |
| EC (1) | ECSP099276A (ja) |
| IL (1) | IL197389A0 (ja) |
| MA (1) | MA30816B1 (ja) |
| MX (1) | MX2009003126A (ja) |
| NO (1) | NO20091783L (ja) |
| PE (1) | PE20081456A1 (ja) |
| RU (1) | RU2009117237A (ja) |
| TN (1) | TN2009000090A1 (ja) |
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| WO (1) | WO2008044754A1 (ja) |
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| JP2015520192A (ja) * | 2012-06-06 | 2015-07-16 | オンコメッド ファーマシューティカルズ インコーポレイテッド | Hippo経路を調節する結合剤およびその使用 |
| JP2018531215A (ja) * | 2015-08-05 | 2018-10-25 | アムゲン リサーチ (ミュンヘン) ゲーエムベーハーAMGEN Research(Munich)GmbH | 血液由来のがんの治療における使用を目的とする免疫チェックポイント阻害物質 |
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| DK2740794T3 (en) * | 2011-08-04 | 2018-06-14 | Toray Industries | PHARMACEUTICAL COMPOSITION FOR TREATMENT AND / OR CANCER PREVENTION |
| WO2014069682A1 (ko) * | 2012-10-29 | 2014-05-08 | 인제대학교 산학협력단 | 암 표적 항체 및 이를 포함하는 암 예방 또는 치료용 조성물 |
| WO2014069681A1 (ko) * | 2012-10-29 | 2014-05-08 | 인제대학교 산학협력단 | 암 표적 항체 및 이를 포함하는 암 예방 또는 치료용 조성물 |
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| JP2018531215A (ja) * | 2015-08-05 | 2018-10-25 | アムゲン リサーチ (ミュンヘン) ゲーエムベーハーAMGEN Research(Munich)GmbH | 血液由来のがんの治療における使用を目的とする免疫チェックポイント阻害物質 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2008044754A1 (ja) | 2010-02-18 |
| MA30816B1 (fr) | 2009-10-01 |
| BRPI0717024A2 (pt) | 2014-03-11 |
| CL2007002879A1 (es) | 2008-06-27 |
| EP2067791A1 (en) | 2009-06-10 |
| PE20081456A1 (es) | 2008-11-27 |
| IL197389A0 (en) | 2011-08-01 |
| NO20091783L (no) | 2009-07-01 |
| CO6190538A2 (es) | 2010-08-19 |
| EP2067791A4 (en) | 2009-11-25 |
| TN2009000090A1 (en) | 2010-08-19 |
| RU2009117237A (ru) | 2010-11-20 |
| MX2009003126A (es) | 2009-04-06 |
| CN101541834A (zh) | 2009-09-23 |
| US20100008928A1 (en) | 2010-01-14 |
| ECSP099276A (es) | 2009-06-30 |
| KR20090078339A (ko) | 2009-07-17 |
| AU2007307536A1 (en) | 2008-04-17 |
| AU2007307536A2 (en) | 2009-04-30 |
| AR063153A1 (es) | 2008-12-30 |
| TW200823235A (en) | 2008-06-01 |
| CA2666249A1 (en) | 2008-04-17 |
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