WO2021132550A1 - 術後補助療法剤 - Google Patents
術後補助療法剤 Download PDFInfo
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- WO2021132550A1 WO2021132550A1 PCT/JP2020/048667 JP2020048667W WO2021132550A1 WO 2021132550 A1 WO2021132550 A1 WO 2021132550A1 JP 2020048667 W JP2020048667 W JP 2020048667W WO 2021132550 A1 WO2021132550 A1 WO 2021132550A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/39—Medicinal preparations containing antigens or antibodies characterised by the immunostimulating additives, e.g. chemical adjuvants
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/04—Antineoplastic agents specific for metastasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001102—Receptors, cell surface antigens or cell surface determinants
- A61K39/001103—Receptors for growth factors
- A61K39/001104—Epidermal growth factor receptors [EGFR]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001144—Hormones, e.g. calcitonin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/62—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being a protein, peptide or polyamino acid
- A61K47/65—Peptidic linkers, binders or spacers, e.g. peptidic enzyme-labile linkers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K19/00—Hybrid peptides, i.e. peptides covalently bound to nucleic acids, or non-covalently bound protein-protein complexes
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/70—Multivalent vaccine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to a postoperative adjuvant therapeutic agent for tumors using a CTL epitope 4-linked peptide formed by linking four peptides having HLA-A restrictive CTL-inducing ability.
- Cancer is the leading cause of death in Japan, and about 350,000 people die annually, and it is still a serious disease.
- the main established cancer treatments are surgery, anticancer drug treatment, radiation therapy, and cancer immunotherapy.
- stage high treatment results are expected by radical surgical treatment that removes all cancer cells.
- curative surgery for highly advanced cancer has its limits, and it has been reported that local recurrence and distant metastasis occur at a frequency that is not low.
- There are various possible causes for local recurrence and distant metastasis but mainly surgery left behind small cancer cells that are invisible to the naked eye, and some of the cancer cells have already been hematogenous or lymphatic metastases. It is thought that the cause was that a minute tumor had begun to grow in another organ.
- cancer cells are considered to be scattered throughout the body, and it is very difficult to remove all cancer cells by surgery. Therefore, various chemotherapy, radiation therapy, and in recent years, cancer immunotherapy have been established as treatment methods for distantly metastasized cancer. Since these treatment methods are provided with a mechanism of action that kills cancer cells at the molecular level and the cellular level, it is theoretically possible to treat all cancer cells distributed throughout the body. However, unfortunately, even with such therapies, in most cases, all the treatment methods eventually become ineffective and death occurs, which has become a major problem in cancer treatment. Therefore, the development of new treatments for recurrent / metastatic cancer is a top priority for cancer control.
- Postoperative adjuvant therapy is a treatment performed for the purpose of eradicating invisible cancer cells and minute metastatic cancer cells by such surgical treatment and preventing recurrence or metastasis of cancer.
- a combination drug of tegafur / gimeracil / oteracil potassium has been established as a postoperative adjuvant therapy for stage II (excluding T1), IIIA or IIIB gastric cancer that has undergone curative surgery, and tegafur / gimeracil has been established.
- stage II excluding T1
- IIIA or IIIB gastric cancer that has undergone curative surgery
- tegafur / gimeracil has been established.
- the oteracil potassium combination drug administration group reduces the risk of death by 32% as compared with the surgery alone group (Non-Patent Document 1).
- postoperative adjuvant therapy is also performed for cancers such as lung cancer, breast cancer, colon cancer, uterine cancer, and malignant melanoma.
- cancer immunotherapy induces, transplants, or activates immune cells that can directly kill cancer cells, such as cytotoxic T lymphocytes (CTL) and natural killer (NK) cells. It has a mechanism of action to eradicate. Therefore, cancer immunotherapy can show a systemic antitumor effect on minute tumors and cancer cells that cannot be seen like chemotherapy.
- CTL cytotoxic T lymphocytes
- NK natural killer
- Cancer peptide vaccine therapy which is one of the cancer immunotherapy, is a long-awaited treatment method as a new treatment method for cancer.
- MHC major histocompatibility complex
- TCR cell receptor
- CTL epitope-specific cytotoxic T lymphocytes
- HLA human leukocyte antigen
- An object of the present invention is to provide a postoperative adjuvant therapeutic agent for a tumor, which exhibits a remarkably excellent effect of suppressing tumor metastasis and recurrence and has few side effects.
- the present inventor administered a CTL epitope 4-linked peptide to an animal model of tumor metastasis / recurrence and examined the effect of suppressing tumor metastasis / recurrence.
- lung metastasis nodules did not cause serious side effects.
- a postoperative adjuvant therapeutic agent for a tumor which comprises a CTL epitope 4-linked peptide containing four CTL epitope peptides linked via a linker as an active ingredient.
- the CTL epitope 4-linked peptide The epitope peptide (PEP5) represented by SEQ ID NO: 5 and The epitope peptide represented by SEQ ID NO: 1 (PEP1), the epitope peptide represented by SEQ ID NO: 2 (PEP2), the epitope peptide represented by SEQ ID NO: 4 (PEP4), and the epitope peptide represented by SEQ ID NO: 6 (PEP6).
- the epitope peptide represented by SEQ ID NO: 7 (PEP7), the epitope peptide represented by SEQ ID NO: 8 (PEP8), the epitope peptide represented by SEQ ID NO: 9 (PEP9), and the epitope peptide represented by SEQ ID NO: 10. (PEP10), the epitope peptide represented by SEQ ID NO: 13 (PEP13), the epitope peptide represented by SEQ ID NO: 15 (PEP15), the epitope peptide represented by SEQ ID NO: 17 (PEP17), and the epitope peptide represented by SEQ ID NO: 18.
- Three epitope peptides selected from the group consisting of epitope peptides (PEP18)
- the epitope peptide contained in the CTL epitope 4-linked peptide is PEP5, PEP6, One epitope peptide selected from the group consisting of PEP9 and PEP2, PEP4 and PEP10,
- the postoperative adjuvant therapeutic agent for a tumor according to [1] or [2], wherein the CTL epitope 4-linked peptide comprises a sequence selected from the following.
- the linker is an amino acid linker.
- the amino acid linker is an arginine dimer in which two arginines are linked or an arginine trimmer in which three arginines are linked.
- the peptide sequence consisting of hydrophilic amino acids is composed of an arginine trimmer in which three arginines are linked and an N-terminal is linked, or an arginine tetramer in which four arginines are linked.
- the CTL epitope 4-linked peptide The epitope peptide (PEP5) represented by SEQ ID NO: 5 and The epitope peptide represented by SEQ ID NO: 1 (PEP1), the epitope peptide represented by SEQ ID NO: 2 (PEP2), the epitope peptide represented by SEQ ID NO: 4 (PEP4), and the epitope peptide represented by SEQ ID NO: 6 (PEP6).
- PEP10 the epitope peptide represented by SEQ ID NO: 13 (PEP13), the epitope peptide represented by SEQ ID NO: 15 (PEP15), the epitope peptide represented by SEQ ID NO: 17 (PEP17), and the epitope peptide represented by SEQ ID NO: 18.
- PEP18 Three epitope peptides selected from the group consisting of epitope peptides (PEP18)
- the C-terminal is PEP2 (excluding those containing PEP7 and PEP8 at the N-terminal adjacent to each other from the N-terminal side via a linker in this order); (2) The C-terminus is PEP4; (3) The C-terminus is PEP10; The above-mentioned tumor metastasis inhibitor having.
- An agent for suppressing tumor recurrence which comprises a CTL epitope 4-linked peptide containing four CTL epitope peptides linked via a linker as an active ingredient.
- the CTL epitope 4-linked peptide The epitope peptide (PEP5) represented by SEQ ID NO: 5 and The epitope peptide represented by SEQ ID NO: 1 (PEP1), the epitope peptide represented by SEQ ID NO: 2 (PEP2), the epitope peptide represented by SEQ ID NO: 4 (PEP4), and the epitope peptide represented by SEQ ID NO: 6 (PEP6).
- PEP10 the epitope peptide represented by SEQ ID NO: 13 (PEP13), the epitope peptide represented by SEQ ID NO: 15 (PEP15), the epitope peptide represented by SEQ ID NO: 17 (PEP17), and the epitope peptide represented by SEQ ID NO: 18.
- PEP18 Three epitope peptides selected from the group consisting of epitope peptides (PEP18)
- the C-terminal is PEP2 (excluding those containing PEP7 and PEP8 at the N-terminal adjacent to each other from the N-terminal side via a linker in this order); (2)
- the C-terminus is PEP4; (3)
- the C-terminus is PEP10; An agent for suppressing the recurrence of the above-mentioned tumor.
- the present invention also relates to the following aspects. -The CTL epitope 4-linked peptide defined in the above [1] to [11] for use in postoperative adjuvant therapy of a tumor.
- -CTL epitope 4-linked peptide represented by SEQ ID NO: 24 for use in suppressing tumor metastasis.
- -CTL epitope 4-linked peptide represented by SEQ ID NO: 24 for use in suppressing tumor recurrence.
- a pharmaceutical composition for postoperative adjuvant therapy of tumors comprising the CTL epitope 4-linked peptide represented by SEQ ID NO: 24.
- -Postoperative adjuvant therapy for tumors comprising the step of administering to a patient an amount effective for treating recurrence and / or metastasis of a tumor of the CTL epitope 4-linked peptide defined in the above [1] to [11].
- a method for suppressing tumor metastasis which comprises a step of administering to a patient an amount effective for treating tumor metastasis of the CTL epitope 4-linked peptide defined in the above [1] to [11].
- a method for suppressing tumor recurrence which comprises a step of administering to a patient an amount effective for treating tumor recurrence of the CTL epitope 4-linked peptide defined in the above [1] to [11].
- the postoperative adjuvant therapy for tumors of the present invention it is possible to perform cancer treatment that has an effect of suppressing tumor metastasis / recurrence while suppressing the onset of side effects. As a result, it brings about long-term survival of cancer patients.
- the HPLC chromatogram of the CTL epitope 4-linked peptide TPV07 is shown.
- the HPLC chromatogram of the CTL epitope 4-linked peptide TPV08 is shown.
- the mass spectrum of the CTL epitope 4-linked peptide TPV07 is shown.
- the mass spectrum of the CTL epitope 4-linked peptide TPV08 is shown.
- B16F10. A24 / SART2 the 93-101 cell lines indicating the inhibitory effect of lung metastatic nodules number of TPV06 in a mouse model that intravenous transplantation.
- the present invention relates to a postoperative adjuvant therapeutic agent for a tumor containing a CTL epitope 4-linked peptide as an active ingredient.
- the present invention also relates to a tumor metastasis inhibitor containing a CTL epitope 4-linked peptide as an active ingredient.
- the present invention also relates to a tumor recurrence inhibitor containing a CTL epitope 4-linked peptide as an active ingredient.
- the CTL epitope 4-linked peptide means a peptide in which four peptides selected from CTL epitope peptides derived from the same and / or different tumor antigen molecules are linearly linked via a linker to form one molecule. ..
- KLVERLGAA SEQ ID NO: 1, referred to herein as "PEP1”, eg, WO 200l / 0l1044); ASLDSDPWV (SEQ ID NO: 2, referred to herein as “PEP2”, eg, WO 2002/010369); ALVEFEDVL (SEQ ID NO: 3, referred to herein as “PEP3”, eg, WO 2002/010369); LLQAEAPRL (SEQ ID NO: 4, referred to herein as "PEP4", eg, WO 2000/12701); DYSARWNEI (SEQ ID NO: 5, described herein as "PEP5", eg, JP-A-11-318455); VYDYNCHVDL (SEQ ID NO: 6, referred to herein as "PEP6”, eg, WO 2000/12701); LYAWEPSFL (SEQ ID NO: 7, described herein as
- Table 1 shows information on the proteins from which the CTL epitope peptides PEP1 to PEP18 are derived. These proteins have been reported to be highly expressed in tumor tissues.
- the CTL epitope 4-linked peptide of the present invention is represented by 13 specific types (peptide "PEP1" represented by SEQ ID NO: 1, peptide "PEP2” represented by SEQ ID NO: 2 and SEQ ID NO: 4 among the above-mentioned CTL epitope peptides.
- Peptide "PEP8”, peptide represented by SEQ ID NO: 9 is "PEP9", peptide represented by SEQ ID NO: 10 "PEP10”, peptide represented by SEQ ID NO: 13 "PEP13”, peptide represented by SEQ ID NO: 15.
- the CTL epitope 4-linked peptide is The peptide "PEP5" represented by SEQ ID NO: 5 and Peptide "PEP1” represented by SEQ ID NO: 1, peptide "PEP2” represented by SEQ ID NO: 2, peptide "PEP4" represented by SEQ ID NO: 4, peptide "PEP6” represented by SEQ ID NO: 6, SEQ ID NO:
- the peptide "PEP10” represented by SEQ ID NO: 10 represented by SEQ ID NO: 10
- SEQ ID NO: 13 Selected from the group consisting of the peptide "PEP13” represented, the peptide "PEP15” represented by SEQ ID NO: 15, the peptide "PEP17” represented by SEQ ID NO: 17, and the peptide "PEP18” represented by SEQ ID NO: 18.
- one or more amino acids are substituted, inserted, deleted, and in each amino acid sequence of PEP1, PEP2, PEP4, PEP5, PEP6, PEP7, PEP8, PEP9, PEP10, PEP13, PEP15, PEP17, and PEP18.
- a peptide having / or an added amino acid sequence and having a CTL-inducing ability and / or an immunoglobulin production-inducing ability equal to or higher than that of the original peptide can also be used as a "CTL epitope peptide".
- “plurality" is 2 to 3, preferably 2.
- Such peptides include, for example, peptides substituted with amino acids having properties similar to the original amino acids (ie, obtained by conservative amino acid substitutions).
- the peptide is "a peptide having a CTL-inducing ability and / or an immunoglobulin production-inducing ability equal to or higher than that of the original peptide" is evaluated according to, for example, the method described in International Publication No. 2015/060235 pamphlet. can do.
- the CTL inducibility is a mouse-derived cell, syngeneic mouse, pre-administered with a test peptide having an amino acid sequence in which one or more amino acids have been substituted, inserted, deleted, and / or added.
- the determination results of the obtained ⁇ values (positive (10 ⁇ ⁇ ⁇ 100), medium positive (100 ⁇ ⁇ ⁇ 200)) ), Strongly positive (200 ⁇ ⁇ )) is equal to or higher than that, it can be determined that the peptide has a CTL-inducing ability equal to or higher than that of the original peptide.
- the original peptide is "positive” and the peptide having an amino acid sequence in which one or more amino acids are substituted, inserted, deleted, and / or added is also "positive", it is judged to be equivalent.
- the ability to induce immunoglobulin production uses the CTL epitope-specific IgG antibody titer in the serum of mice to which the test peptide was administered as an index, and the measurement result (2 ⁇ fold ⁇ 10, of the obtained increase in IgG antibody titer (fold)). If 10 ⁇ fold ⁇ 100, 100 ⁇ fold) is equal to or higher than that, it can be determined that the peptide has an equivalent or higher ability to induce immunoglobulin production. In this case, the measurement result of the original peptide is within the range of "2 ⁇ fold ⁇ 10", and the measurement result of the peptide having an amino acid sequence in which one or more amino acids are substituted, inserted, deleted, and / or added. Is also judged to be equivalent if it is within the range of "2 ⁇ fold ⁇ 10".
- the linker may be any as long as it is cleaved when the CTL epitope 4-linked peptide is administered to a living body and the linked CTL epitope peptide can be individually separated, for example, an ester bond. , Ether bond, amide bond, sugar chain linker, polyethylene glycol linker, amino acid linker and the like.
- the amino acid sequences used as the amino acid linker include arginine dimer (RR), arginine trimmer (RRR), arginine tetramer (RRRR), lysine dimer (KK), lysine trimmer (KKK), lysine tetramer (KKKK), and glycine dimer (GG).
- Glycin trimmer (GGG), Glycintetramer (GGGG), Glycine pentamer (GGGGGG), Glysin hexamer (GGGGGG), Alanine-alanine-tyrosine (AAY), Isoleucine-leucine-alanine (ILA), Arginine-Valin- Examples thereof include lysine-arginine (RVKR), preferably arginine dimer (RR) or arginine trimmer (RRR), and more preferably arginine dimer (RR).
- Linkers used in epitope-linked peptides are known in the art and can be appropriately selected and used by those skilled in the art.
- the CTL epitope peptide selected and the ligation order thereof are such that the CTL epitope 4-linked peptide synthesized in a predetermined combination and a predetermined ligation order is administered to human HLA-A expressing transgenic mice. Then, the presence or absence of CTL induction specific to each CTL epitope peptide can be evaluated and determined in vivo.
- the method for evaluating the presence or absence of CTL induction specific to each CTL epitope peptide in vivo can be evaluated according to, for example, the method described in International Publication No. 2015/060235 pamphlet.
- the CTL epitope peptides selected and their ligation order were such that CTL induction specific to each CTL epitope peptide was observed for at least 3 or more types, preferably 4 types of CTL epitope peptides, using the method.
- the epitope peptide and its linking order can be determined.
- the CTL epitope 4-linked peptide of the present invention preferably has one of the characteristics selected from the following (1) to (3): (1)
- the C-terminal is PEP2 (excluding those containing PEP7 and PEP8 at the N-terminal adjacent to each other from the N-terminal side via a linker in this order); (2)
- the C-terminus is PEP4; (3)
- the C-terminal is PEP10.
- the CTL epitope 4-linked peptide of the present invention is The peptide "PEP5" represented by SEQ ID NO: 5 and Peptide "PEP1” represented by SEQ ID NO: 1, peptide "PEP2” represented by SEQ ID NO: 2, peptide "PEP4" represented by SEQ ID NO: 4, peptide "PEP6” represented by SEQ ID NO: 6, SEQ ID NO: The peptide “PEP7” represented by 7, the peptide “PEP8” represented by SEQ ID NO: 8, the peptide “PEP9” represented by SEQ ID NO: 9, the peptide "PEP10” represented by SEQ ID NO: 10, and SEQ ID NO: 13 Selected from the group consisting of the peptide "PEP13” represented, the peptide "PEP15” represented by SEQ ID NO: 15, the peptide "PEP17” represented by SEQ ID NO: 17, and the peptide "PEP18” represented by SEQ ID NO: 18.
- the C-terminal is PEP2 (excluding those containing PEP7 and PEP8 at the N-terminal adjacent to each other from the N-terminal side via a linker in this order); (2) The C-terminus is PEP4; (3) The C-terminal is PEP10.
- the CTL epitope 4-linked peptide of the present invention includes the peptide "PEP5" represented by SEQ ID NO: 5, the peptide "PEP6” represented by SEQ ID NO: 6, and the peptide "PEP9” represented by SEQ ID NO: 9.
- One peptide selected from the group consisting of the peptide "PEP2" represented by SEQ ID NO: 2, the peptide "PEP4" represented by SEQ ID NO: 4 and the peptide "PEP10” represented by SEQ ID NO: 10 They are each linked via a linker and have a C-terminus of PEP2, PEP4, or PEP10.
- the CTL epitope 4-linked peptide of the present invention is a peptide consisting of a sequence selected from the following: -PEP5- (L) -PEP6- (L) -PEP9- (L) -PEP4; -PEP9- (L) -PEP5- (L) -PEP6- (L) -PEP4; -PEP6- (L) -PEP5- (L) -PEP9- (L) -PEP4; -PEP6- (L) -PEP9- (L) -PEP5- (L) -PEP4; -PEP9- (L) -PEP6- (L) -PEP5- (L) -PEP4; -PEP9- (L) -PEP6- (L) -PEP5- (L) -PEP4; -PEP5- (L) -PEP9- (L) -PEP6-
- the CTL epitope 4-linked peptide of the present invention is a peptide consisting of a sequence selected from the following: -PEP5- (L) -PEP9- (L) -PEP6- (L) -PEP4; -PEP5- (L) -PEP9- (L) -PEP6- (L) -PEP2; or -PEP5- (L) -PEP9- (L) -PEP6- (L) -PEP10.
- "(L)" indicates a linker.
- the CTL epitope 4-linked peptide of the present invention is a peptide represented by a sequence selected from the following, wherein the linker is an arginine dimer: PEP5-RR-PEP9-RR-PEP6-RR-PEP4 (SEQ ID NO: 24, referred to herein as TPV06); PEP5-RR-PEP9-RR-PEP6-RR-PEP2 (SEQ ID NO: 25, referred to herein as TPV07); or PEP5-RR-PEP9-RR-PEP6-RR-PEP10 (SEQ ID NO: 26, referred to herein as TPV08).
- the CTL epitope 4-linked peptide of the present invention is the peptide TPV06 represented by SEQ ID NO: 24.
- the CTL epitope 4-linked peptide is preferably a peptide represented by a sequence selected from SEQ ID NOs: 19 to 28 shown in Table 2 below.
- the CTL epitope 4-linked peptide is selected from those listed in Table 2 above, the following peptides: TPV01 (SEQ ID NO: 19); TPV02 (SEQ ID NO: 20); TPV03 (SEQ ID NO: 21); TPV04 (SEQ ID NO: 22); TPV05 (SEQ ID NO: 23); or TPV06 (SEQ ID NO: 24); Is.
- two or more CTL epitope 4-linked peptides may be used.
- two, three, four or more CTL epitope 4-linked peptides may be used separately or in combination.
- the remaining one or more may be the CTL epitope 4-linked peptide of the present invention as long as at least one CTL epitope 4-linked peptide of the present invention is contained.
- it may be a CTL epitope 4-linked peptide as described in, for example, International Publication No. 2015/060235.
- the peptide represented by SEQ ID NO: 24 and the peptide represented by SEQ ID NO: 29 (TPV011: PEP15-RR-PEP18-RR-PEP1-RR- It is even more preferable to use a mixture of three types of PEP10) and the peptide represented by SEQ ID NO: 30 (TPV012: RRRR-PEP7-RR-PEP13-RR-PEP8-RR-PEP2).
- the CTL epitope 4-linked peptide of the present invention can further have a peptide sequence consisting of hydrophilic amino acids.
- the peptide sequence can be added to the N-terminus and / or C-terminus of the CTL epitope 4-linked peptide, preferably to the N-terminus.
- the peptide sequence is selected from the group consisting of arginine, histidine, lysine, threonine, tyrosine, serine, aspartic acid, glutamine, aspartic acid, and glutamic acid, with 1 to 15, preferably 2 to 10, and even more preferably 3 to.
- Those consisting of 5 hydrophilic amino acids can be selected.
- arginine trimmer RRR
- RRRR arginine tetramer
- CTL epitope 4-linked peptide to which such a peptide sequence is added RRR-TPV06, RRRR-TPV06, TPV06 -RRR, TPV06-RRRR, RRR-TPV07, RRR-TPV07, TPV07-RRR, TPV07-RRRR, RRR-TPV08, RRRR-TPV08, TPV08-RRRR, TPV08-RRRK6KKK , TPV06-KKKK, KKK-TPV07, KKK-TPV07, TPV07-KKK, TPV07-KKKK, KKK-TPV08, KKK-TPV08, TPV08-KKK, TPV08-KKKK, HHH-TPV -HHHH, HHH-TPV07, HHHH-TPV07, HHH-TPV07, HHHH-TPV07, HHH-
- the "CTL epitope 4-linked peptide which may further have a peptide sequence consisting of a hydrophilic amino acid" of the present invention preferably has a peptide sequence consisting of a hydrophilic amino acid at the N-terminal CTL epitope 4. It is a ligating peptide, more preferably a CTL epitope 4-linked peptide which may have a peptide sequence consisting of 3 to 5 hydrophilic amino acids selected from the group consisting of arginine, histidine and lysine at the N-terminal.
- CTL epitope 4-linked peptide which may have an arginine trimmer (RRR) or arginine tetramer (RRRR) at the N-terminal, and more preferably a CTL epitope 4-linked peptide having no peptide sequence consisting of a hydrophilic amino acid. It is a peptide.
- the CTL epitope 4-linked peptide of the present invention can be synthesized, for example, according to the method described in International Publication No. 2015/060235 pamphlet.
- postoperative adjuvant therapy is a method for treating or suppressing tumor recurrence and / or metastasis after surgery.
- the postoperative adjuvant therapy of the present invention comprises the step of administering the CTL epitope 4-linked peptide described herein to a patient after tumor resection.
- the patients who are the subjects of the present invention can obtain particularly effective effects in humans, but are not limited to those.
- the recommended dose of the CTL epitope 4-linked peptide used in the present invention in humans is preferably in the range of 3 to 9 mg / body / day per CTL epitope 4-linked peptide.
- the "recommended dose” may be a dose determined by clinical trials or the like that brings about the maximum therapeutic effect within a range that can be safely used without causing serious side effects.
- PMDA Pharmaceuticals and Medical Devices Agency
- FDA Food and Drug Administration
- EMA European Medicines Agency
- the administration schedule of the postoperative adjuvant therapy agent, metastasis inhibitor and recurrence inhibitor of the tumor of the present invention can be appropriately selected according to the type and stage of the tumor.
- the administration schedule of the CTL epitope 4-linked peptide is preferably a cycle of 21 days in total, in which the step of administering once a week is repeated 3 times (once a day on the 1st, 8th, and 15th days). Further, after the 3rd cycle, the administration is preferably administered on the 1st day and the drug is withdrawn for 20 days (a method of administering once every 3 weeks), with a total of 21 days as one cycle.
- the number of daily administrations of the CTL epitope 4-linked peptide of the present invention can be appropriately selected according to the type of cancer, the stage of the disease, and the like.
- the number of daily administrations of the CTL epitope 4-linked peptide is preferably once.
- the target tumor in the present invention is not particularly limited as long as it exerts an antitumor effect in the postoperative adjuvant therapy of the tumor, but preferably the CTL epitope 4-linked peptide exerts the antitumor effect in the postoperative adjuvant therapy of the tumor. More preferably, it is a malignant tumor positive for Lck, WHSC2, SART2, SART3, MRP3, UBE2V, EGFR, or PTHrP, and more preferably a malignant tumor positive for SART2.
- cancers to be the subject of the present invention include brain cancer, head and neck cancer, gastrointestinal cancer (esophageal cancer, gastric cancer, duodenal cancer, liver cancer, biliary tract cancer (bile sac / bile duct cancer, etc.), pancreatic cancer, small intestine).
- gastrointestinal cancer esophageal cancer, gastric cancer, duodenal cancer, liver cancer, biliary tract cancer (bile sac / bile duct cancer, etc.), pancreatic cancer, small intestine).
- Cancer colorectal cancer (colorectal cancer, colon cancer, rectal cancer, etc.), gastrointestinal stromal tumor, lung cancer (non-small cell lung cancer, small cell lung cancer), breast cancer, ovarian cancer, uterine cancer (cervical cancer, uterus) (Body cancer, etc.), renal cancer, urinary tract epithelial cancer (bladder cancer, renal pelvis cancer, urinary tract cancer), prostate cancer, skin cancer, cancer of unknown primary origin, etc.
- the cancer includes not only the primary tumor but also cancer that has metastasized to other organs (liver, etc.).
- head and neck cancer gastrointestinal cancer, lung cancer, kidney cancer, urothelial cancer, and skin cancer are preferable, and gastrointestinal cancer, lung cancer, urothelial cancer, and skin cancer are more preferable, from the viewpoint of antitumor effect.
- Lung cancer and urothelial cancer are particularly preferable.
- the administration form of the postoperative adjuvant therapy agent, metastasis inhibitor and recurrence inhibitor of the tumor of the present invention is not particularly limited and may be appropriately selected according to the therapeutic purpose. Specifically, an oral preparation (tablet, coated tablet, powder) , Granules, capsules, liquids, etc.), injections, suppositories, patches, ointments, etc. can be exemplified, and injections are preferable.
- the postoperative adjuvant therapy agent, metastasis inhibitor and recurrence inhibitor of the tumor in the present invention can be prepared by a commonly known method using a pharmaceutically acceptable carrier.
- Such carriers include various general-purpose carriers such as excipients, binders, disintegrants, lubricants, diluents, solubilizers, suspending agents, isotonic agents, pH. Examples thereof include regulators, buffers, stabilizers, colorants, flavoring agents, and odorants.
- the CTL epitope 4-linked peptide which is an active ingredient of the postoperative adjuvant therapy agent, metastasis inhibitor and recurrence inhibitor of the present invention, can specifically target only cells expressing the contained epitope. Therefore, it is effectively used while reducing the burden on the patient without causing serious side effects as compared with the conventional anticancer agents used as postoperative adjuvant therapy agents, metastasis inhibitors and recurrence inhibitors. be able to.
- the anticancer effect is often confirmed using an animal model, but it is common to use the growth of the transplanted tumor and the survival rate of the transplanted animal as an index.
- the effects of the postoperative adjuvant therapy agent, metastasis inhibitor and recurrence inhibitor are considered to be more preferable to confirm the effect on metastasis than to resect the tumor once transplanted into the animal model. Therefore, the effects of the postoperative adjuvant therapy agent, metastasis inhibitor, and recurrence inhibitor of the tumor of the present invention should be confirmed using, for example, an animal model in which tumor development occurs at a site different from the tumor transplantation site, that is, metastasis occurs. Can be done.
- the CTL epitope 4-linked peptide which is an active ingredient of the postoperative adjuvant therapy agent, metastasis inhibitor, and recurrence inhibitor of the present invention, has an HLA-A-binding ability to induce CTL, and thus its effect has been confirmed.
- the animal model used to do this needs to be one that expresses the HLA-A molecule.
- Examples of such a model include, but are not limited to, non-immunodeficient non-human animals with HLA-A gene knock-in.
- the non-immunodeficient non-human animal having the HLA-A gene knock-in may be a non-immunodeficient non-human animal having the ⁇ 1 and ⁇ 2 regions of human HLA-A.
- the human HLA-A24 gene knock-in mouse (B2m tm2 (HLA-A24 / H-2Db / B2M) Tai mouse) disclosed in Immunol: 198,516-527 (2017) can be preferably used.
- amino acids in which the ⁇ -amino group is an Fmoc group and the side chain functional group is a general protecting group in Wang-Chemtrix resin are 1- (mesitylen-2-sulfonyl) -3-nitro-1,2, Condensation was completed under the conditions of 4-triazole / N-methylimidazole / dichloromethane to complete the support of the C-terminal amino acid on the resin.
- a deblocking solution (20% piperidine / N, N-dimethylformamide (DMF)
- Amino acids protected with 1- [bis (dimethylamino) methylene] -5-chloro-1H-benzo-triazolium 3-oxide hexafluorophosphate (HCTU) / N-methylmorpholin (NMM) / DMF conditions are used to condense the amino acids.
- a dipeptide was synthesized.
- a peptide having the desired sequence was synthesized by repeating the deprotection of the Fmoc group with a deblocking solution and the amino acid condensation operation under the HCTU / NMM / DMF conditions.
- a deprotection solution (2.5% triisopropylsilane, 2.5% water, 2.5% 1,2-ethanedithiol, 92.5% trifluoroacetic acid) is used as the protective peptide resin.
- the free peptide was excised from the resin along with the removal of the peptide side chain protecting group by reacting for 4 hours. The resin was removed by filtration, and the obtained filtrate was added to cold ether to recover the peptide as a precipitate.
- the various synthetic peptides obtained were purified on a Proteinavi column (SHISEIDO) using a 0.1% TFA aqueous solution and acetonitrile in a solvent system.
- the purity of the final purified peptide was confirmed by CAPCELL PAK UG120 column (SHISEIDO) and HPLC system (HITACHI).
- the molecular weight was confirmed by an ESI-MS system (Synapt HDMS, WATERS), and after freeze-drying, it was stored in a cool, warm and dark place, and used in the examples shown below.
- Table 3 shows the molecular weights measured by mass spectrometric (MS) analysis of TPV07 and TPV08. Further, HPLC chromatograms and MS of TPV07 and TPV08 are shown in FIGS. 1 to 4.
- TPV01 to TPV06 and TPV09 to TPV12 can be synthesized, for example, according to the method described in International Publication No. 2015/060235 pamphlet, or synthesized according to the same method as TPV07 and TPV08 shown above. You can also. All peptides had a purity of 90% or higher.
- B16F10.A24 / SART2 93-101 cell lines PoS One: 13, e0199249 ( 2018)
- B16F10.A24 / SART2 93-101 cell lines (PLoS One: 13, e0199249 ( 2018)) by using a Dulbecco's Modified Eagle's Medium (Sigma -Aldrich) medium containing 10% FBS, and cultured.
- B16F10.A24 / SART2 93-101 during 37 ° C., 5% CO 2 incubator, twice a week, 1: 25-1: were passaged 40 ratio.
- mice Grouping On the same day after mice Grouping (Day0), D-PBS to B16F10.A24 / SART2 93-101 cell suspensions prepared with (Fujifilm Wako Junyaku), 1 ⁇ 10 6 cells into mouse tail vein / 0.1 mL each was transplanted.
- the epitope 4-linked peptide TPV06 (SEQ ID NO: 24) was dissolved in distilled water (Otsuka Pharmaceutical Factory) to prepare a 6 mg / mL peptide solution, which was filled in a B Braun Injekt syringe (B. Braun Ace scrap). After filling another syringe with an equal amount of Montande ISA 51 VG (SEPPIC), both syringes were connected by a connector, and the peptide solution and Montandide ISA 51 VG were mixed well to prepare an emulsion. In addition, as a control, an emulsion in which distilled water and an equal amount of Montande ISA 51 VG were mixed was prepared.
- antigen-specific CTL is known to specifically recognize and activate cells in which a cancer antigen-derived CTL epitope peptide is presented via an HLA molecule on the cell surface and kill the cells.
- the target cell expresses the cancer antigen targeted by the CTL epitope 4-linked peptide
- the antitumor effect can be exhibited. That is, regarding the tumor metastasis / recurrence-suppressing effect (therapeutic effect) of the CTL epitope 4-linked peptide, if the CTL epitope 4-linked peptide expresses the target cancer antigen, the effect is exerted.
- the type of target tumor is not limited. All publications, patents and patent applications cited herein are incorporated herein by reference in their entirety.
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Abstract
Description
〔1〕リンカーを介して連結された4個のCTLエピトープペプチドを含むCTLエピトープ4連結ペプチドを有効成分として含有することを特徴とする腫瘍の術後補助療法剤であって、
該CTLエピトープ4連結ペプチドが、
配列番号5で表されるエピトープペプチド(PEP5)と、
配列番号1で表されるエピトープペプチド(PEP1)、配列番号2で表されるエピトープペプチド(PEP2)、配列番号4で表されるエピトープペプチド(PEP4)、配列番号6で表されるエピトープペプチド(PEP6)、配列番号7で表されるエピトープペプチド(PEP7)、配列番号8で表されるエピトープペプチド(PEP8)、配列番号9で表されるエピトープペプチド(PEP9)、配列番号10で表されるエピトープペプチド(PEP10)、配列番号13で表されるエピトープペプチド(PEP13)、配列番号15で表されるエピトープペプチド(PEP15)、配列番号17で表されるエピトープペプチド(PEP17)及び配列番号18で表されるエピトープペプチド(PEP18)からなる群より選択される3個のエピトープペプチドが、
リンカーを介してそれぞれ連結されてなり、親水性アミノ酸からなるペプチド配列を更に有してもよい、CTLエピトープ4連結ペプチドであって、以下の(1)~(3)より選択されるいずれか一つの特徴:
(1)C末端がPEP2である(ただし、N末端にPEP7及びPEP8をN末端側からリンカーを介して隣り合ってこの順で含むものを除く);
(2)C末端がPEP4である;
(3)C末端がPEP10である;
を有する、上記腫瘍の術後補助療法剤。
〔2〕上記CTLエピトープ4連結ペプチドに含まれるエピトープペプチドが、
PEP5、
PEP6、
PEP9、及び
PEP2、PEP4及びPEP10からなる群より選択される1個のエピトープペプチド、
から構成され、上記CTLエピトープ4連結ペプチドのC末端がPEP2、PEP4又はPEP10である、〔1〕に記載の腫瘍の術後補助療法剤。
〔3〕CTLエピトープ4連結ペプチドが、以下より選択される配列からなる、〔1〕又は〔2〕に記載の腫瘍の術後補助療法剤:
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP4;
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP2;又は、
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP10;
なお、式中「(L)」はリンカーを示す。
〔4〕CTLエピトープ4連結ペプチドが、以下の配列からなる、〔1〕~〔3〕のいずれかに記載の腫瘍の術後補助療法剤:
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP4
なお、式中「(L)」はリンカーを示す。
〔5〕リンカーがアミノ酸リンカーである、〔1〕~〔4〕のいずれかに記載の腫瘍の術後補助療法剤。
〔6〕アミノ酸リンカーが、アルギニンを2個連結したアルギニンダイマー、又はアルギニンを3個連結したアルギニントリマーである、〔5〕に記載の腫瘍の術後補助療法剤。
〔7〕親水性アミノ酸からなるペプチド配列が、N末端に連結され、かつアルギニンを3個連結したアルギニントリマー、又はアルギニンを4個連結したアルギニンテトラマーからなる、〔1〕~〔6〕のいずれかに記載の腫瘍の術後補助療法剤。
〔8〕CTLエピトープ4連結ペプチドが、配列番号24、配列番号25、又は配列番号26である、〔1〕~〔7〕のいずれかに記載の腫瘍の術後補助療法剤。
〔9〕CTLエピトープ4連結ペプチドが、配列番号24である、〔1〕~〔8〕のいずれかに記載の腫瘍の術後補助療法剤。
〔10〕リンカーを介して連結された4個のCTLエピトープペプチドを含むCTLエピトープ4連結ペプチドを有効成分として含有することを特徴とする腫瘍の転移抑制剤であって、
該CTLエピトープ4連結ペプチドが、
配列番号5で表されるエピトープペプチド(PEP5)と、
配列番号1で表されるエピトープペプチド(PEP1)、配列番号2で表されるエピトープペプチド(PEP2)、配列番号4で表されるエピトープペプチド(PEP4)、配列番号6で表されるエピトープペプチド(PEP6)、配列番号7で表されるエピトープペプチド(PEP7)、配列番号8で表されるエピトープペプチド(PEP8)、配列番号9で表されるエピトープペプチド(PEP9)、配列番号10で表されるエピトープペプチド(PEP10)、配列番号13で表されるエピトープペプチド(PEP13)、配列番号15で表されるエピトープペプチド(PEP15)、配列番号17で表されるエピトープペプチド(PEP17)及び配列番号18で表されるエピトープペプチド(PEP18)からなる群より選択される3個のエピトープペプチドが、
リンカーを介してそれぞれ連結されてなり、親水性アミノ酸からなるペプチド配列を更に有してもよい、CTLエピトープ4連結ペプチドであって、以下の(1)~(3)より選択されるいずれか一つの特徴:
(1)C末端がPEP2である(ただし、N末端にPEP7及びPEP8をN末端側からリンカーを介して隣り合ってこの順で含むものを除く);
(2)C末端がPEP4である;
(3)C末端がPEP10である;
を有する、上記腫瘍の転移抑制剤。
〔11〕リンカーを介して連結された4個のCTLエピトープペプチドを含むCTLエピトープ4連結ペプチドを有効成分として含有することを特徴とする腫瘍の再発抑制剤であって、
該CTLエピトープ4連結ペプチドが、
配列番号5で表されるエピトープペプチド(PEP5)と、
配列番号1で表されるエピトープペプチド(PEP1)、配列番号2で表されるエピトープペプチド(PEP2)、配列番号4で表されるエピトープペプチド(PEP4)、配列番号6で表されるエピトープペプチド(PEP6)、配列番号7で表されるエピトープペプチド(PEP7)、配列番号8で表されるエピトープペプチド(PEP8)、配列番号9で表されるエピトープペプチド(PEP9)、配列番号10で表されるエピトープペプチド(PEP10)、配列番号13で表されるエピトープペプチド(PEP13)、配列番号15で表されるエピトープペプチド(PEP15)、配列番号17で表されるエピトープペプチド(PEP17)及び配列番号18で表されるエピトープペプチド(PEP18)からなる群より選択される3個のエピトープペプチドが、
リンカーを介してそれぞれ連結されてなり、親水性アミノ酸からなるペプチド配列を更に有してもよい、CTLエピトープ4連結ペプチドであって、以下の(1)~(3)より選択されるいずれか一つの特徴:
(1)C末端がPEP2である(ただし、N末端にPEP7及びPEP8をN末端側からリンカーを介して隣り合ってこの順で含むものを除く);
(2)C末端がPEP4である;
(3)C末端がPEP10である;
を有する、上記腫瘍の再発抑制剤。
・腫瘍の術後補助療法において使用するための上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチド。
・腫瘍の術後補助療法において使用するための配列番号24で表されるCTLエピトープ4連結ペプチド。
・腫瘍の転移抑制において使用するための上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチド。
・腫瘍の転移抑制において使用するための配列番号24で表されるCTLエピトープ4連結ペプチド。
・腫瘍の再発抑制において使用するための上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチド。
・腫瘍の再発抑制において使用するための配列番号24で表されるCTLエピトープ4連結ペプチド。
・上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチドを含む腫瘍の術後補助療法のための医薬組成物。
・配列番号24で表されるCTLエピトープ4連結ペプチドを含む腫瘍の術後補助療法のための医薬組成物。
・上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチドを含む腫瘍の転移抑制のための医薬組成物。
・配列番号24で表されるCTLエピトープ4連結ペプチドを含む腫瘍の転移抑制のための医薬組成物。
・上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチドを含む腫瘍の再発抑制のための医薬組成物。
・配列番号24で表されるCTLエピトープ4連結ペプチドを含む腫瘍の再発抑制のための医薬組成物。
・上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチドを、腫瘍の再発及び/又は転移治療に有効な量を患者に投与する工程を含む、腫瘍の術後補助療法。
・上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチドを、腫瘍の転移治療に有効な量を患者に投与する工程を含む、腫瘍の転移抑制方法。
・上記〔1〕~〔11〕で規定されるCTLエピトープ4連結ペプチドを、腫瘍の再発治療に有効な量を患者に投与する工程を含む、腫瘍の再発抑制方法。
本明細書は本願の優先権の基礎となる日本国特許出願番号2019-236947号の開示内容を包含する。
KLVERLGAA(配列番号1、本明細書において「PEP1」と記載する、例えば国際公開第200l/0l1044号);
ASLDSDPWV(配列番号2、本明細書において「PEP2」と記載する、例えば国際公開第2002/010369号);
ALVEFEDVL(配列番号3、本明細書において「PEP3」と記載する、例えば国際公開第2002/010369号);
LLQAEAPRL(配列番号4、本明細書において「PEP4」と記載する、例えば国際公開第2000/12701号);
DYSARWNEI(配列番号5、本明細書において「PEP5」と記載する、例えば特開平11-318455号);
VYDYNCHVDL(配列番号6、本明細書において「PEP6」と記載する、例えば国際公開第2000/12701号);
LYAWEPSFL(配列番号7、本明細書において「PEP7」と記載する、例えば特開2003-000270号);
DYLRSVLEDF(配列番号8、本明細書において「PEP8」と記載する、例えば国際公開第2001/011044号);
QIRPIFSNR(配列番号9、本明細書において「PEP9」と記載する、例えば国際公開第2008/007711号);
ILEQSGEWWK(配列番号10、本明細書において「PEP10」と記載する、例えば国際公開第2009/022652号);
VIQNLERGYR(配列番号11、本明細書において「PEP11」と記載する、例えば国際公開第2009/022652号);
KLKHYGPGWV(配列番号12、本明細書において「PEP12」と記載する、例えば国際公開第1999/067288号);
RLQEWCSVI(配列番号13、本明細書において「PEP13」と記載する、例えば国際公開第2002/010369号);
ILGELREKV(配列番号14、本明細書において「PEP14」と記載する、例えば国際公開第2002/010369号;
DYVREHKDNI(配列番号15、本明細書において「PEP15」と記載する、例えば国際公開第2005/071075号);
HYTNASDGL(配列番号16、本明細書において「PEP16」と記載する、例えば国際公開第2001/011044号);
NYSVRYRPGL(配列番号17、本明細書において「PEP17」と記載する、例えば特開2003-000270号);
RYLTQETNKV(配列番号18、本明細書において「PEP18」と記載する、例えば国際公開第2005/116056号)
配列番号5で表されるペプチド「PEP5」と、
配列番号1で表されるペプチド「PEP1」、配列番号2で表されるペプチド「PEP2」、配列番号4で表されるペプチド「PEP4」、配列番号6で表されるペプチド「PEP6」、配列番号7で表されるペプチド「PEP7」、配列番号8で表されるペプチド「PEP8」、配列番号9で表されるペプチド「PEP9」、配列番号10で表されるペプチド「PEP10」、配列番号13で表されるペプチド「PEP13」、配列番号15で表されるペプチド「PEP15」、配列番号17で表されるペプチド「PEP17」及び配列番号18で表されるペプチド「PEP18」からなる群より選択される3つのペプチドが、
リンカーを介してそれぞれ連結されてなる、
ペプチドである。
(1)C末端がPEP2である(ただし、N末端にPEP7及びPEP8をN末端側からリンカーを介して隣り合ってこの順で含むものを除く);
(2)C末端がPEP4である;
(3)C末端がPEP10である。
配列番号5で表されるペプチド「PEP5」と、
配列番号1で表されるペプチド「PEP1」、配列番号2で表されるペプチド「PEP2」、配列番号4で表されるペプチド「PEP4」、配列番号6で表されるペプチド「PEP6」、配列番号7で表されるペプチド「PEP7」、配列番号8で表されるペプチド「PEP8」、配列番号9で表されるペプチド「PEP9」、配列番号10で表されるペプチド「PEP10」、配列番号13で表されるペプチド「PEP13」、配列番号15で表されるペプチド「PEP15」、配列番号17で表されるペプチド「PEP17」及び配列番号18で表されるペプチド「PEP18」からなる群より選択される3つのペプチドが、
リンカーを介してそれぞれ連結されてなり、以下の(1)~(3)より選択されるいずれか一つの特徴を有するペプチド:
(1)C末端がPEP2である(ただし、N末端にPEP7及びPEP8をN末端側からリンカーを介して隣り合ってこの順で含むものを除く);
(2)C末端がPEP4である;
(3)C末端がPEP10である。
配列番号2で表されるペプチド「PEP2」、配列番号4で表されるペプチド「PEP4」及び配列番号10で表されるペプチド「PEP10」からなる群より選択される1つのペプチドが、
リンカーを介してそれぞれ連結されてなり、C末端がPEP2、PEP4、又はPEP10である。
・PEP5-(L)-PEP6-(L)-PEP9-(L)-PEP4;
・PEP9-(L)-PEP5-(L)-PEP6-(L)-PEP4;
・PEP6-(L)-PEP5-(L)-PEP9-(L)-PEP4;
・PEP6-(L)-PEP9-(L)-PEP5-(L)-PEP4;
・PEP9-(L)-PEP6-(L)-PEP5-(L)-PEP4;
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP4;
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP2;又は、
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP10。
なお、式中「(L)」はリンカーを示す。
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP4;
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP2;又は、
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP10。
なお、式中「(L)」はリンカーを示す。
・PEP5-RR-PEP9-RR-PEP6-RR-PEP4(配列番号24、本明細書においてTPV06と記載する);
・PEP5-RR-PEP9-RR-PEP6-RR-PEP2(配列番号25、本明細書においてTPV07と記載する);又は、
・PEP5-RR-PEP9-RR-PEP6-RR-PEP10(配列番号26、本明細書においてTPV08と記載する)
であり、
より好ましくは、本発明のCTLエピトープ4連結ペプチドは、配列番号24で表されるペプチドTPV06である。
・TPV01(配列番号19);
・TPV02(配列番号20);
・TPV03(配列番号21);
・TPV04(配列番号22);
・TPV05(配列番号23);又は、
・TPV06(配列番号24);
である。
本発明の対象となる患者は、限定するものではないが、ヒトで特に有効な効果を得ることができる。
CTLエピトープ4連結ペプチドは、1週間に1回投与する工程を3回(1日目、8日目、15日目に1日1回)繰り返す計21日間を1サイクルとした投与スケジュールが好ましい。また、3サイクル目以降は、1日目に投与し20日間の休薬を行う(3週間に1回投与する方法)計21日間を1サイクルとした投与スケジュールが好ましい。
エピトープ4連結ペプチドTPV07及びTPV08を、自動ペプチド合成機Prelude(Protein Technologies,Inc.)を用いて、9-フルオレニルメチル-オキシカルボニル(Fmoc)法による固相ペプチド合成法にて合成した。すなわち、Wang-ChemMatrix樹脂にα-アミノ基がFmoc基で、側鎖官能基が一般的な保護基で保護されたアミノ酸を1-(メシチレン-2-スルホニル)-3-ニトロ-1,2,4-トリアゾール/N-メチルイミダゾール/ジクロロメタン条件により縮合し、樹脂へのC末端アミノ酸の担持を完了した。これにデブロッキング液(20% ピペリジン/N,N-ジメチルホルムアミド(DMF))を注入してFmoc基を除去した後に、α-アミノ基がFmoc基で、側鎖官能基が一般的な保護基で保護されたアミノ酸を1-[ビス(ジメチルアミノ)メチレン]-5-クロロ-1H-ベンゾ-トリアゾリウム 3-オキシド ヘキサフルオロホスフェート(HCTU)/N-メチルモルホリン(NMM)/DMF条件によって縮合し、ジペプチドを合成した。デブロッキング液によるFmoc基の脱保護とHCTU/NMM/DMF条件によるアミノ酸の縮合操作を繰り返すことにより、目的とする配列を有するペプチドを合成した。保護ペプチド樹脂の合成完了後、脱保護溶液(2.5% トリイソプロピルシラン、2.5% 水、2.5%1,2-エタンジチオール、92.5% トリフルオロ酢酸)を保護ペプチド樹脂に加えて、4時間反応することによってペプチド側鎖保護基の除去と共に、樹脂から遊離ペプチドを切り出した。樹脂をろ去し、得られたろ液を冷エーテルに添加することにより、ペプチドを沈澱として回収した。得られた各種合成ペプチドはProteonaviカラム(SHISEIDO)にて溶媒系に0.1% TFA水溶液及びアセトニトリルを用いて精製した。最終精製ペプチドはCAPCELL PAK UG120カラム(SHISEIDO)及びHPLCシステム(HITACHI)により純度を確認した。また、ESI-MSシステム(Synapt HDMS、WATERS)により分子量を確認し、凍結乾燥後冷温暗所にて保存し、以降に示す実施例に供した。
11週齢のB2mtm2(HLA-A24/H-2Db/B2M)Taiマウス(J.Immunol:198,516-527(2017))を、ランダムに各群10匹ずつ割り付けた。群分けを実施した日をDay0とした。
本明細書で引用した全ての刊行物、特許及び特許出願はそのまま引用により本明細書に組み入れられるものとする。
Claims (9)
- リンカーを介して連結された4個のCTLエピトープペプチドを含むCTLエピトープ4連結ペプチドを有効成分として含有することを特徴とする腫瘍の術後補助療法剤であって、
該CTLエピトープ4連結ペプチドが、
配列番号5で表されるエピトープペプチド(PEP5)と、
配列番号1で表されるエピトープペプチド(PEP1)、配列番号2で表されるエピトープペプチド(PEP2)、配列番号4で表されるエピトープペプチド(PEP4)、配列番号6で表されるエピトープペプチド(PEP6)、配列番号7で表されるエピトープペプチド(PEP7)、配列番号8で表されるエピトープペプチド(PEP8)、配列番号9で表されるエピトープペプチド(PEP9)、配列番号10で表されるエピトープペプチド(PEP10)、配列番号13で表されるエピトープペプチド(PEP13)、配列番号15で表されるエピトープペプチド(PEP15)、配列番号17で表されるエピトープペプチド(PEP17)及び配列番号18で表されるエピトープペプチド(PEP18)からなる群より選択される3個のエピトープペプチドが、
リンカーを介してそれぞれ連結されてなり、親水性アミノ酸からなるペプチド配列を更に有してもよい、CTLエピトープ4連結ペプチドであって、以下の(1)~(3)より選択されるいずれか一つの特徴:
(1)C末端がPEP2である(ただし、N末端にPEP7及びPEP8をN末端側からリンカーを介して隣り合ってこの順で含むものを除く);
(2)C末端がPEP4である;
(3)C末端がPEP10である;
を有する、上記腫瘍の術後補助療法剤。 - 上記CTLエピトープ4連結ペプチドに含まれるエピトープペプチドが、
PEP5、
PEP6、
PEP9、及び
PEP2、PEP4及びPEP10からなる群より選択される1個のエピトープペプチド、
から構成され、上記CTLエピトープ4連結ペプチドのC末端がPEP2、PEP4又はPEP10である、請求項1に記載の腫瘍の術後補助療法剤。 - CTLエピトープ4連結ペプチドが、以下より選択される配列からなる、請求項1又は2に記載の腫瘍の術後補助療法剤:
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP4;
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP2;又は、
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP10;
なお、式中「(L)」はリンカーを示す。 - CTLエピトープ4連結ペプチドが、以下の配列からなる、請求項1~3のいずれか1項に記載の腫瘍の術後補助療法剤:
・PEP5-(L)-PEP9-(L)-PEP6-(L)-PEP4
なお、式中「(L)」はリンカーを示す。 - リンカーがアミノ酸リンカーである、請求項1~4のいずれか1項に記載の腫瘍の術後補助療法剤。
- アミノ酸リンカーが、アルギニンを2個連結したアルギニンダイマー、又はアルギニンを3個連結したアルギニントリマーである、請求項5に記載の腫瘍の術後補助療法剤。
- 親水性アミノ酸からなるペプチド配列が、N末端に連結され、かつアルギニンを3個連結したアルギニントリマー、又はアルギニンを4個連結したアルギニンテトラマーからなる、請求項1~6のいずれか1項に記載の腫瘍の術後補助療法剤。
- CTLエピトープ4連結ペプチドが、配列番号24、配列番号25、又は配列番号26である、請求項1~7のいずれか1項に記載の腫瘍の術後補助療法剤。
- CTLエピトープ4連結ペプチドが、配列番号24である、請求項1~8のいずれか1項に記載の腫瘍の術後補助療法剤。
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| JP2021567660A JP7522770B2 (ja) | 2019-12-26 | 2020-12-25 | 術後補助療法剤 |
| US17/788,847 US20230055953A1 (en) | 2019-12-26 | 2020-12-25 | Agent for adjuvant therapy |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11318455A (ja) | 1998-05-08 | 1999-11-24 | Kyogo Ito | ヒト癌退縮抗原タンパク質 |
| WO1999067288A1 (en) | 1998-06-25 | 1999-12-29 | Sumitomo Pharmaceuticals Company, Limited | Tumor antigen peptides originating in cyclophilin b |
| WO2000012701A1 (fr) | 1998-08-28 | 2000-03-09 | Sumitomo Pharmaceuticals Company, Limited | Nouvelle proteine d'antigene tumoral sart-3 et peptide d'antigene tumoral de celle-ci |
| WO2001011044A1 (fr) | 1999-08-05 | 2001-02-15 | Kyogo Itoh | Antigene de tumeur |
| WO2002010369A1 (en) | 2000-07-31 | 2002-02-07 | Kyogo Itoh | Tumor antigen |
| JP2003000270A (ja) | 2000-10-03 | 2003-01-07 | Kyogo Ito | 腫瘍抗原 |
| WO2005071075A1 (ja) | 2004-01-23 | 2005-08-04 | Green Peptide Co., Ltd. | 上皮細胞増殖因子受容体(egfr)由来ペプチド |
| WO2005116056A1 (ja) | 2004-05-26 | 2005-12-08 | Green Peptide Co., Ltd. | 副甲状腺ホルモン関連タンパク質のhla-a24またはhla-a2結合ペプチド |
| JP2006188507A (ja) | 2004-12-10 | 2006-07-20 | Tokyo Univ Of Agriculture & Technology | 蛋白質の溶解度向上方法 |
| WO2008007711A1 (en) | 2006-07-11 | 2008-01-17 | Kurume University | Sart3-derived peptide useful in cancer vaccine therapy for hla-a3 supertype allele-positive prostate cancer patient |
| WO2009022652A1 (ja) | 2007-08-16 | 2009-02-19 | Kurume University | HLA-A3スーパータイプアレル陽性癌患者に対する癌ワクチン療法に有用なLck由来ペプチド |
| WO2014136814A1 (ja) * | 2013-03-08 | 2014-09-12 | 大鵬薬品工業株式会社 | 新規ctlエピトープ5連結ペプチド |
| WO2015056774A1 (ja) | 2013-10-18 | 2015-04-23 | 大鵬薬品工業株式会社 | Hlaクラスi発現非ヒト動物 |
| WO2015060235A1 (ja) | 2013-10-21 | 2015-04-30 | 大鵬薬品工業株式会社 | 新規ctlエピトープ4連結ペプチド |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997032600A1 (fr) * | 1996-03-10 | 1997-09-12 | Meiji Milk Products Co., Ltd. | Agent immunotherapeutique a base peptidique pour le traitement des allergies |
| TWI805792B (zh) * | 2018-06-29 | 2023-06-21 | 日商大鵬藥品工業股份有限公司 | 抗腫瘤劑及其評估方法 |
-
2020
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- 2020-12-25 EP EP20906353.6A patent/EP4082563A4/en active Pending
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Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11318455A (ja) | 1998-05-08 | 1999-11-24 | Kyogo Ito | ヒト癌退縮抗原タンパク質 |
| WO1999067288A1 (en) | 1998-06-25 | 1999-12-29 | Sumitomo Pharmaceuticals Company, Limited | Tumor antigen peptides originating in cyclophilin b |
| WO2000012701A1 (fr) | 1998-08-28 | 2000-03-09 | Sumitomo Pharmaceuticals Company, Limited | Nouvelle proteine d'antigene tumoral sart-3 et peptide d'antigene tumoral de celle-ci |
| WO2001011044A1 (fr) | 1999-08-05 | 2001-02-15 | Kyogo Itoh | Antigene de tumeur |
| WO2002010369A1 (en) | 2000-07-31 | 2002-02-07 | Kyogo Itoh | Tumor antigen |
| JP2003000270A (ja) | 2000-10-03 | 2003-01-07 | Kyogo Ito | 腫瘍抗原 |
| WO2005071075A1 (ja) | 2004-01-23 | 2005-08-04 | Green Peptide Co., Ltd. | 上皮細胞増殖因子受容体(egfr)由来ペプチド |
| WO2005116056A1 (ja) | 2004-05-26 | 2005-12-08 | Green Peptide Co., Ltd. | 副甲状腺ホルモン関連タンパク質のhla-a24またはhla-a2結合ペプチド |
| JP2006188507A (ja) | 2004-12-10 | 2006-07-20 | Tokyo Univ Of Agriculture & Technology | 蛋白質の溶解度向上方法 |
| WO2008007711A1 (en) | 2006-07-11 | 2008-01-17 | Kurume University | Sart3-derived peptide useful in cancer vaccine therapy for hla-a3 supertype allele-positive prostate cancer patient |
| WO2009022652A1 (ja) | 2007-08-16 | 2009-02-19 | Kurume University | HLA-A3スーパータイプアレル陽性癌患者に対する癌ワクチン療法に有用なLck由来ペプチド |
| WO2014136814A1 (ja) * | 2013-03-08 | 2014-09-12 | 大鵬薬品工業株式会社 | 新規ctlエピトープ5連結ペプチド |
| WO2015056774A1 (ja) | 2013-10-18 | 2015-04-23 | 大鵬薬品工業株式会社 | Hlaクラスi発現非ヒト動物 |
| WO2015060235A1 (ja) | 2013-10-21 | 2015-04-30 | 大鵬薬品工業株式会社 | 新規ctlエピトープ4連結ペプチド |
Non-Patent Citations (6)
| Title |
|---|
| "Janeway's Immunobiology" |
| J. IMMUNOL., vol. 198, 2017, pages 516 - 527 |
| N. ENGL. J. MED., vol. 357, 2007, pages 1810 - 20 |
| PEPTIDES, vol. 38, 2012, pages 302 - 311 |
| PLOS ONE, vol. 13, 2018, pages e0199249 |
| See also references of EP4082563A4 |
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| US20230055953A1 (en) | 2023-02-23 |
| TWI900515B (zh) | 2025-10-11 |
| JPWO2021132550A1 (ja) | 2021-07-01 |
| AU2020411439B2 (en) | 2025-06-19 |
| JP7522770B2 (ja) | 2024-07-25 |
| KR20220120627A (ko) | 2022-08-30 |
| TW202135854A (zh) | 2021-10-01 |
| EP4082563A1 (en) | 2022-11-02 |
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