WO2016088784A1 - アジュバント組成物 - Google Patents
アジュバント組成物 Download PDFInfo
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- WO2016088784A1 WO2016088784A1 PCT/JP2015/083825 JP2015083825W WO2016088784A1 WO 2016088784 A1 WO2016088784 A1 WO 2016088784A1 JP 2015083825 W JP2015083825 W JP 2015083825W WO 2016088784 A1 WO2016088784 A1 WO 2016088784A1
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7088—Compounds having three or more nucleosides or nucleotides
- A61K31/7125—Nucleic acids or oligonucleotides having modified internucleoside linkage, i.e. other than 3'-5' phosphodiesters
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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
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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
- A61K39/39—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
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/117—Nucleic acids having immunomodulatory properties, e.g. containing CpG-motifs
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- C12N2310/00—Structure or type of the nucleic acid
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- C12N2310/17—Immunomodulatory nucleic acids
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- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/30—Chemical structure
- C12N2310/31—Chemical structure of the backbone
- C12N2310/315—Phosphorothioates
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- C—CHEMISTRY; METALLURGY
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- C12N2760/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses negative-sense
- C12N2760/00011—Details
- C12N2760/18011—Paramyxoviridae
- C12N2760/18411—Morbillivirus, e.g. Measles virus, canine distemper
- C12N2760/18432—Use of virus as therapeutic agent, other than vaccine, e.g. as cytolytic agent
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the present invention relates to a novel adjuvant composition and a vaccine composition containing the same.
- the mainstream method is to administer a peptide vaccine as a cancer antigen, but as a method to increase the effective rate, there is a method in which an adjuvant that activates dendritic cells is administered simultaneously with the administration of the cancer antigen.
- an adjuvant that activates dendritic cells has been advocated.
- the inventors of the present invention have been researching adjuvants used in cancer immunotherapy, and have found that measles virus-derived diRNA (defective interference) RNA has an adjuvant function. Specifically, the diRNA induces IFN- ⁇ expression in human cells, enhances NK cell NK activity, and is administered together with a cancer antigen epitope to tumor-bearing mice transplanted with B16 melanoma cells.
- Patent document 1 the present inventors have found an oligo DNA that inhibits the induction of IFN- ⁇ expression via TLR3 of poly IC, and the oligo DNA is taken into cells through a receptor common to poly IC, and is taken up. It has been reported that a part of oligo DNA is localized in TLR3 (Non-patent Document 1). Furthermore, the present inventors have found that a novel nucleic acid designed based on the oligo DNA described in Non-Patent Document 1 and the diRNA described in Patent Document 1 reaches TLR3 on the endosome and has strong adjuvant activity. (Patent document 2).
- the present invention provides an adjuvant composition containing a nucleic acid having strong adjuvant activity and high safety and which can be produced by chemical synthesis, and a vaccine composition comprising the adjuvant composition and an antigen or antigenic component. This is the issue.
- the present invention includes the following inventions in order to solve the above problems.
- An adjuvant composition comprising a single-stranded nucleic acid A consisting of the base sequence shown in SEQ ID NO: 3 and a double-stranded nucleic acid formed by the single-stranded nucleic acid B shown in SEQ ID NO: 4. object.
- the adjuvant composition as described in [1] above, wherein both the single-stranded nucleic acid A and the single-stranded nucleic acid B are chemically synthesized nucleic acids.
- Composition [4] The adjuvant composition according to any one of [1] to [3] above, wherein a phosphate group is not bound to either end of the single-stranded nucleic acid A and the single-stranded nucleic acid B. . [5] The adjuvant composition according to any one of [1] to [4] above, wherein all of the nucleotides constituting the single-stranded DNA are phosphorothioate-modified. [6] A vaccine composition comprising the adjuvant composition according to any one of [1] to [5] and an antigen or antigenic component. [7] The vaccine composition according to [6], wherein the antigen is a cancer antigen.
- an adjuvant composition containing a nucleic acid produced by chemical synthesis and having strong adjuvant activity and high safety can be provided.
- the nucleic acid is highly useful as an adjuvant for human application because it has higher stability and fewer side effects than nucleic acids produced by in vitro transcription.
- an excellent vaccine composition can be provided by combining the adjuvant composition with an antigen or antigenic component.
- (A) is a diagram showing the structure of cM362-140
- (B) is a diagram showing the results of subjecting cM362-140 sense RNA and antisense RNA to 8% PAGE containing 7% urea. It is a figure which shows the structure of cM362-139. It is a figure which shows the result of having investigated the stability with respect to PBS which added cM362-140 and cM362-139, (A) is the result of cM362-140, (B) is the result of cM362-139. It is a figure which shows the result of having examined the stability with respect to the RNase free water which added cM362-140 and cM362-139.
- FIG. 3 is a graph showing the results of measuring the amount of IFN- ⁇ produced in spleen cells by administering cM362-140 and / or OVA to EG7 cell-bearing wild-type mice. It is a figure which shows the result of having evaluated the regression effect by cM362-140 using the B16 melanoma cell (B16D8) cancer bearing mouse
- the present invention relates to an adjuvant composition
- an adjuvant composition comprising a nucleic acid in which a double-stranded RNA consisting of the base sequence shown in SEQ ID NO: 1 and its complementary sequence and a single-stranded DNA consisting of the base sequence shown in SEQ ID NO: 2 are bound.
- the nucleic acid contained in the adjuvant composition of the present invention (hereinafter referred to as “the nucleic acid of the present invention”) is a double-stranded RNA comprising the base sequence shown in SEQ ID NO: 1 and its complementary sequence, and SEQ ID NO: 2. Any nucleic acid may be used as long as it is bound to a single-stranded DNA having a base sequence.
- the double-stranded RNA portion of the nucleic acid of the present invention has TLR3 activation ability, and it has been confirmed that the single-stranded DNA portion is delivered to the endosome of dendritic cells. Therefore, the nucleic acid of the present invention can be efficiently delivered to dendritic cell endosomes and can activate immune function by activating TLR3.
- the base sequence shown in SEQ ID NO: 1 is the first to 140th base sequence of the base sequence (SEQ ID NO: 5) of the sense strand of diRNA derived from the edible measles virus strain Edmonston (ED) strain.
- the complementary sequence is the base sequence shown in SEQ ID NO: 4.
- the single-stranded DNA consisting of the base sequence shown in SEQ ID NO: 2 may be linked to any strand of double-stranded RNA.
- Single-stranded DNA and double-stranded RNA may be directly linked, and may be linked via other nucleic acids (for example, linker nucleic acid), but are preferably directly linked.
- 3 'of the single-stranded DNA may be bound to the 5' side of the RNA strand, and the 5 'side of the single-stranded DNA may be bound to the 3' side of the RNA strand. More preferably, the 3 ′ end of the single-stranded DNA is directly covalently bonded to the 5 ′ end of the RNA strand, and the 3 ′ end of the single-stranded DNA is directly connected to the 5 ′ end of the RNA sense strand (SEQ ID NO: 1). More preferably, they are covalently bonded.
- the nucleic acid of the present invention comprises a single-stranded nucleic acid A (chimeric nucleic acid of single-stranded DNA and RNA sense strand) consisting of the base sequence shown in SEQ ID NO: 3 and a single-stranded nucleic acid B shown in SEQ ID NO: 4 ( It is preferably formed by an RNA antisense strand.
- A chimeric nucleic acid of single-stranded DNA and RNA sense strand
- the nucleotide constituting the single-stranded DNA is preferably phosphorothioate-modified (also referred to as “S-modified”).
- the nucleotides modified with phosphorothioate may be part or all of the nucleotides constituting the single-stranded DNA, but it is more preferable that all of them are phosphorothioate modified.
- Phosphorothioate modification shows nuclease resistance and improves delivery to endosomes.
- the nucleic acid of the present invention is preferably formed by two nucleic acid chains produced by chemical synthesis. That is, the single-stranded nucleic acid A and the single-stranded nucleic acid B are preferably chemically synthesized nucleic acid chains.
- the nucleic acid of the present invention can be stably produced in a lyophilized state, for example, by sequence-specific production by chemical synthesis without using in vitro transcription.
- it is highly useful in that the synthesized base sequence is accurate.
- the chemical synthesis method of nucleic acid is not particularly limited, and a known general chemical synthesis method can be preferably used. An example is the phosphoramidite method.
- Each single-stranded nucleic acid may be chemically synthesized at the full length at once, or may be divided into several fragments and then ligated together by ligation.
- the length (number of bases) of the fragment is not particularly limited, but is preferably about 30 to about 80 mer, more preferably about 35 to about 70 mer, and further preferably about 40 to about 60 mer.
- a known ligation method can be used. For example, Moore et al. (Moore MJ, & Sharp PA. Site-specific modification of pre-mRNA: the 2'-hydroxyl groups at the splice sites. Science 256: 992 -997 (1992)), Jing et al.
- RNA solution structure by segmental isotopic labeling and NMR: Application to Caenorhabditis elegans spliced leader RNA 1. Proc. Na93 A cad It is preferable to use a ligation reaction mediated by splint DNA as described in: 44-48 (1996)) (see Example 1).
- each single-stranded nucleic acid forming the nucleic acid of the present invention has no phosphate group bonded to any end.
- Triphosphate is added to the 5 ′ end of the RNA strand synthesized by in vitro transcription, but since the nucleic acid of the present invention can be produced by chemical synthesis, it can be added to both the 5 ′ end and the 3 ′ end. It can be produced using a single-stranded nucleic acid to which a phosphate group is not bound.
- a large dose in vivo activates the cytoplasmic RIG-I pathway and induces a large amount of cytokine production, causing side effects (RobinsonbinRA, DeVita VT , Levy HB, Baron S, Hubbard SP, Levine AS.
- Side effects RobotsonbinRA, DeVita VT , Levy HB, Baron S, Hubbard SP, Levine AS.
- the nucleic acid of the present invention selectively activates a signal transduction system via TICAM-1 downstream of TLR3 and does not activate intracellular RNA sensors other than TLR3, so there is no concern of causing a cytokine storm.
- the safety is high (see Examples 5 and 7).
- the nucleic acid of the present invention is excellent in stability as compared with a nucleic acid having a similar structure formed using an RNA chain synthesized by in vitro transcription (see Example 2).
- the adjuvant composition of the present invention can be formulated by appropriately blending the nucleic acid of the present invention and a pharmaceutically acceptable carrier or additive. Specifically, tablets, coated tablets, pills, powders, granules, capsules, solutions, suspensions, emulsions and other oral preparations, injections, infusions, suppositories, ointments, patches, and other parenteral preparations can do.
- Carriers or additives that can be blended are not particularly limited.
- various carriers such as water, physiological saline, other aqueous solvents, aqueous or oily bases; excipients, binders, pH adjusters, disintegrants, absorption
- Various additives such as an accelerator, a lubricant, a colorant, a corrigent, and a fragrance are included.
- Additives that can be mixed into tablets, capsules and the like include binders such as gelatin, corn starch, tragacanth, gum arabic, excipients such as crystalline cellulose, corn starch, gelatin, alginic acid and the like. Leavening agents, lubricants such as magnesium stearate, sweeteners such as sucrose, lactose or saccharin, flavorings such as peppermint, red oil and cherry.
- a liquid carrier such as fats and oils can be further contained in the above type of material.
- Sterile compositions for injection can be formulated according to conventional pharmaceutical practice, such as dissolving or suspending in an active substance in a vehicle such as water for injection, naturally occurring vegetable oils such as sesame oil, coconut oil and the like.
- a vehicle such as water for injection, naturally occurring vegetable oils such as sesame oil, coconut oil and the like.
- aqueous liquid for injection for example, isotonic solutions containing physiological saline, glucose and other adjuvants (for example, D-sorbitol, D-mannitol, sodium chloride, etc.) are used.
- alcohol eg, ethanol
- polyalcohol eg, propylene glycol, polyethylene glycol
- nonionic surfactant eg, polysorbate 80 TM , HCO-50
- oily liquid for example, sesame oil, soybean oil and the like are used, and they may be used in combination with solubilizing agents such as benzyl benzoate and benzyl alcohol.
- Buffers eg, phosphate buffer, sodium acetate buffer
- soothing agents eg, benzalkonium chloride, procaine, etc.
- stabilizers eg, human serum albumin, polyethylene glycol, etc.
- storage You may mix
- the preparation thus obtained can be administered to, for example, humans and other mammals (for example, rats, mice, rabbits, sheep, pigs, cows, cats, dogs, monkeys, etc.).
- the dose and frequency of administration of the adjuvant composition of the present invention can be appropriately set in consideration of the purpose of administration, the age, body weight, sex, medical history, administration method, etc. of the administration subject.
- the present invention provides a vaccine composition comprising the adjuvant composition of the present invention and an antigen or antigenic component.
- the antigen or antigenic component include viral antigens, bacterial antigens, cancer antigens, and components thereof.
- it is a cancer antigen.
- the vaccine composition of the present invention can be produced by adding an antigen or antigenic component to the adjuvant composition of the present invention.
- the vaccine composition of this invention can be formulated and implemented similarly to the adjuvant composition of the said invention.
- viral antigens examples include adenovirus, retrovirus, picornavirus, herpes virus, rotavirus, hantavirus, coronavirus, togavirus, flavivirus, rhabdovirus, paramyxovirus, orthomyxovirus, bunyavirus, arenavirus.
- Reovirus papillomavirus, parvovirus, poxvirus, hepadnavirus, spongy virus, HIV, CMV, hepatitis A virus, hepatitis B virus, hepatitis C virus, influenza virus, measles virus, poliovirus, natural Virus antigens such as vagina virus, rubella virus, herpes simplex virus, varicella-zoster virus, Epstein-Barr virus, Japanese encephalitis virus, rabies virus, influenza virus Other combinations thereof.
- bacterial antigens include bacterial antigens such as Bacillus, Escherichia, Listeria, Neisseria, Nocardia, Salmonella, Staphylococcus, and Streptococcus, or combinations thereof.
- cancer antigens include leukemia, lymphoma, astrocytoma, glioblastoma, melanoma, breast cancer, lung cancer, head and neck cancer, digestive system tumor, gastric cancer, colon cancer, liver cancer, pancreatic cancer, uterine cancer, ovary Cancer, vaginal cancer, testicular cancer, prostate cancer, penile cancer, bone tumor, vascular tumor, esophageal cancer, stomach cancer, rectal cancer, colon cancer, pancreatic cancer, gallbladder cancer, bile duct cancer, laryngeal cancer, lung cancer, bronchial cancer, bladder cancer , Cancer antigens such as kidney cancer, brain tumor, thyroid cancer, Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, or combinations thereof.
- the present invention further includes the following inventions.
- a nucleic acid comprising a single-stranded nucleic acid A consisting of the base sequence shown in SEQ ID NO: 3 and a single-stranded nucleic acid B shown in SEQ ID NO: 4.
- a method for treating cancer comprising administering the nucleic acid and cancer antigen according to (1) above to a mammal.
- Example 1 Preparation of nucleic acid
- cM362-140 chemically synthesized nucleic acid
- S1, S2, S3, AS1, AS2, and AS3 Each single-stranded nucleic acid (S1, S2, S3, AS1, AS2, and AS3) shown in Table 1 was synthesized by entrusting to Gene Design Co., Ltd.
- TBDMS RNA amidite was used for the chemical synthesis of the RNA part
- general DNA amidite was used for the chemical synthesis of the DNA part
- PADS was used for the S-modified (phosphorothioate) part.
- the synthesis method was based on the phosphoramidite method (Scaringe, S. A.
- CM362-140 a chemically synthesized long RNA, is a ligation reaction mediated by splint DNA (reference: MooreMoMJ, & Sharp PA. Site-specific modification of pre-mRNA: the 2'-hydroxyl groups at the splice sites . Science 256: 992-997 (1992), Jing Xu, Lapham J, & Crothers DM. Determining RNA solution structure by segmental isotopic labeling and NMR: Application to Caenorhabditis elegans spliced leader RNA 1. 93: 44-48) (1996)).
- the sense RNA (single-stranded nucleic acid A) of cM362-140 was prepared by a two-step ligation reaction.
- S2 fragment SEQ ID NO: 7, 40 nmol
- S3 fragment SEQ ID NO: 8, 40 nmol
- splint DNA specific to the ligation site SEQ ID NO: 12, 40-48 nmol
- T4 DNA ligase Takara Bio
- the ligation reaction mixture contains 15.4 ⁇ M annealed complex, 66 mM Tris-HCl (pH 7.6), 6.6 mM MgCl2, 10 mM DTT, 0.1 mM ATP and ⁇ 31 unit / ⁇ L T4 DNA ligase.
- S1 fragment SEQ ID NO: 6, 40 nmol
- splint DNA specific for the second ligation site SEQ ID NO: 13, 40-48 nmol
- the second ligation reaction mixture was 8.9 ⁇ M annealed complex, 66 mM Tris-HCl (pH 7.6), 6.6 mM MgCl 2 , 10 mM DTT, 0.1 mM ATP and ⁇ 31 unit / ⁇ L T4 DNA.
- the obtained 165-mer full-length sense RNA (single-stranded nucleic acid A) was separated by 8% PAGE containing 7 M urea, visualized by UV irradiation, and then the target band was cut out and eluted with 0.3 M sodium acetate. .
- the eluted RNA was ethanol precipitated and resuspended in RNase-free water.
- RNA was dialyzed, concentrated and precipitated with ethanol.
- concentration of RNA was determined by measuring absorbance at 260 nm with a spectrophotometer. The yield was 8-10%.
- RNA single stranded nucleic acid B
- AS1 single stranded nucleic acid 9
- AS2 single stranded nucleic acid 10
- AS3 single stranded nucleic acid 11
- two types of splint DNA specific to two ligation sites SEQ ID NOs: 14 and 15, 33 nmol each
- the ligation reaction mixture contains 15 ⁇ M annealing complex, 66 mM Tris-HCl (pH 7.6), 6.6 mM MgCl 2 , 10 mM DTT, 0.1 mM ATP and ⁇ 31 unit / ⁇ L T4 DNA ligase.
- the obtained 140-mer full-length antisense RNA was purified in the same manner as the sense RNA. The yield was 15-22%.
- FIG. 1 shows the structure of cM362-140 (A) and the result of subjecting the synthesized 165-mer sense RNA (single-stranded nucleic acid A) and 140-mer antisense RNA (single-stranded nucleic acid B) to 8% PAGE (B). showed that.
- Sense RNA and antisense RNA were detected as a single band at a position corresponding to each base length.
- Single-stranded DNA (ODN + linker DNA) was synthesized by consigning to Gene Design Co., Ltd.
- diRNA defective interference RNA
- ED Edmonston
- a DNA fragment covering this region of the MV genome and the T7 promoter sequence was amplified by PCR using the plasmid pCR-T7MV as a template. The primers used are shown below.
- ODN-139 sense RNA (5 'primer) 5'-tg taatacgactcactata gggaccagacaaagctggga-3 '(SEQ ID NO: 19) Underlined part is T7 promoter sequence ODN-139 sense RNA (3 'primer) 5'-ggatacagtgccctgattaa-3 '(SEQ ID NO: 20) ODN-139 antisense RNA (5 'primer) 5'-tg taatacgactcactata ggatacagtgccctgattaa-3 '(SEQ ID NO: 21) Underlined part is T7 promoter sequence ODN-139 antisense RNA (3 'primer) 5'-ccgtggtcatgctccgggaccagacaaagctggga-3 '(SEQ ID NO: 22)
- Sense RNA and antisense RNA were each produced by in vitro transcription from PCR products using the AmpliScribe TM T7 transcription kit (Epicentre Technologies) according to the manufacturer's protocol. The obtained transcript was separated by 8% PAGE containing 7M urea and purified by the same method as in Example 1 above. Finally, single-stranded DNA (ODN + linker DNA), sense RNA and antisense RNA were mixed and annealed to obtain cM362-139.
- Example 2 Stability of nucleic acid
- HEK293 cells 8 ⁇ 10 5 cells / well were seeded in a 6-well culture plate.
- Human TLR3 expression vector (400 ng / well) or empty vector (400 ng / well) together with reporter plasmid p-125 (400 ng / well) and internal control vector phRL-TK (20 ng / well, Promega), Lipofectamine 2000 (Invitrogen) was used to transfect HEK293 cells.
- Reporter plasmid p-125 containing the human IFN- ⁇ promoter was provided by Dr. Taniguchi of the University of Tokyo.
- Dulbecco's modified Eagle medium (DMEM, Invitrogen) containing 10% heat-inactivated fetal calf serum (FCS, Invitrogen) and antibiotics was used.
- RNA portion (dsRNA140) of cM362-140, cM362-139, poly IC (Amersham) or cM362-140 was added under the following conditions so that the nucleic acid concentration was 10 ⁇ g / mL.
- A Nucleic acid added directly to medium of human TLR3-expressing HEK293 cells
- B Nucleic acid and DOTAP liposomal transfection reagent (Roche) added to medium of human TLR3-expressing HEK293 cells
- C Nucleic acid and Lipofectamine2000 added to medium of HEK293 cells (Invitrogen) was added.
- the luciferase activity was measured using a Dual-Luciferase Reporter Assay System (Promega).
- the above (A) and (B) were measured for luciferase activity 6 hours after the addition of nucleic acid, and the above (C) was measured for 24 hours after the addition of nucleic acid.
- cM362-140 when cM362-140 was delivered to the cytoplasm of HEK293 cells not expressing human TLR3 (C), the IFN- ⁇ promoter was not activated. From this result, it was shown that cM362-140 activates the IFN- ⁇ promoter via TLR3 and does not induce IFN- ⁇ promoter activation via other RNA / DNA sensors.
- Example 4 Induction of in vitro cytokine production
- Spleens were excised from C57BL / 6J mice (wild type: WT) and TLR3 knockout mice (TLR3KO, provided by Dr. Ara, Osaka University), and collagenase-treated.
- the cells were passed through a filter, hemolyzed, washed with a medium, and CD11c positive cells were isolated with a MACS system (miltenyi biotech) using anti-CD11c microbeads to obtain spleen DC.
- MACS system milli biotech
- As the medium Dulbecco's modified Eagle medium (DMEM, Invitrogen) containing 10% heat-inactivated fetal calf serum (FCS, Invitrogen) and antibiotics was used.
- DMEM Dulbecco's modified Eagle medium
- FCS heat-inactivated fetal calf serum
- the results are shown in FIG.
- the left column is (A) when nucleic acid is added to the medium alone
- the middle column is (B) when nucleic acid and DOTAP liposomal transfection reagent are added to the medium
- the right column is (C) nucleic acid and Lipofectamine 2000 are added to the medium
- the upper stage is TNF- ⁇
- the middle stage is IL-6
- the lower stage is IFN- ⁇ .
- Data are shown as the mean and standard deviation of three independent tests.
- the production of TNF- ⁇ , IL-6 and IFN- ⁇ in spleen DC derived from wild-type mice was increased by adding cM362-140 alone to the extracellular side of spleen DC. Slightly increased.
- Example 5 In vivo cytokine production induction
- Wild type C57BL / 6J mice (9 weeks old, female) or TLR3KO mice (9 weeks old, female) were intraperitoneally administered 50 ⁇ g of cM362-140, cM362-139 or poly IC. Three mice were used per group. Each nucleic acid solution was prepared using RNase-free water. After the nucleic acid administration, blood was collected from the tail vein at 1 hour, 3 hours and 6 hours, and serum TNF- ⁇ , IL-6 and IL-10 were measured. A BD CBA Flex Set System was used for the measurement.
- Example 6 Induction of antigen-specific CTL
- the back of C57BL / 6J mice was shaved, and 2 ⁇ 10 6 cells / 200 ⁇ L (PBS) of EG7 cells (EL4 cells derived from thymic species of C57BL / 6 mice were allowed to express ovalbumin antigen).
- Tumor cells were transplanted subcutaneously to form tumors, and the tumor volume (cm 3 ) (major axis ⁇ minor axis 2 ⁇ 0.4) was measured over time.
- tumor volume approximately 0.6 cm 3
- the results are shown in FIG.
- the tumor was hardly regressed in the cM362-140 alone administration group, but the tumor remarkably regressed in the cM362-140 + OVA administration group (*: p ⁇ 0.05).
- Data are shown as mean ⁇ SE, and one-way analysis of variance and Bonferroni test were used for statistical analysis.
- spleen cells were prepared from EG7 tumor-bearing mice and subjected to a tetramer assay.
- spleen cells were prepared according to a conventional method 7 days after the second administration of PBS, cM362-140 alone, OVA alone, or cM362-140 + OVA (22 days after transplantation).
- the obtained spleen cells were stained with FITC-CD8 ⁇ (BioLegend), PerCP / Cy5.5-7AAD (BD Biosciences), APC-CD3 ⁇ (BioLegend) and PE-OVA-tetramer (MBL), and OVA-specific CD8 positive T Cells (tetramer + / CD8 + / CD3 + cells) were detected and the ratio was determined.
- cM362-140 induces proliferation and activation of antigen-specific cytotoxic T cells, and when used in combination with cancer antigens, can exhibit excellent adjuvant effects. It was revealed.
- Example 7 Tumor regression effect by activation of NK cells
- C57BL / 6-B16 syngeneic NK-sensitive tumor transplantation model (Akazawa T., T. Ebihara, M. Okuno, Y. Okuda, K. Tsujimura, T. Takahashi, M. Ikawa, M. Okabe, T. Ebihara, M, Shingai, N. Inoue, M. Tanaka-Okamoto, H. Ishizaki, J. Miyoshi, M. Matsumoto, and T. Seya. 2007.
- mice C57BL / 6J mice (wild type: WT) and TICAM-1 knockout mice (TICAM-1 KO, created by the inventors) were shaved and 6 ⁇ 10 5 cells / 200 ⁇ L (PBS) of B16 melanoma cells ( B16D8) was implanted subcutaneously to form a tumor, and the tumor volume (cm 3 ) (major axis ⁇ minor axis 2 ⁇ 0.4) was measured over time. On the 12th day after transplantation, 150 ⁇ g of cM362-140 mixed with in vivo-JetPEI or distilled water (DW) was administered subcutaneously around the tumor. Three mice were used per group.
- FIG. 11 The results are shown in FIG. The left is the result of the wild type mouse, and the right is the result of the TICAM-1 KO mouse.
- cM362-140 showed a marked tumor regression effect in wild-type mice compared with distilled water (DW) administration, but did not show a tumor regression effect in TICAM-1AMKO mice. It was. From these results, it was shown that the nucleic acid of the present invention exerts an effect on signal transduction via TICAM-1.
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Abstract
Description
[1]配列番号3に示される塩基配列からなる一本鎖核酸Aと、配列番号4に示される一本鎖核酸Bにより形成されている二本鎖核酸を含有することを特徴とするアジュバント組成物。
[2]一本鎖核酸Aおよび一本鎖核酸Bがいずれも化学合成核酸であることを特徴とする前記[1]に記載のアジュバント組成物。
[3]一本鎖核酸Aおよび一本鎖核酸Bが、化学合成された複数のフラグメントをライゲーションにより連結させて作製されていることを特徴とする前記[1]または[2]に記載のアジュバント組成物。
[4]一本鎖核酸Aおよび一本鎖核酸Bのいずれの末端にもリン酸基が結合していないことを特徴とする前記[1]~[3]のいずれかに記載のアジュバント組成物。
[5]一本鎖DNAを構成するヌクレオチドの全部がホスホロチオエート修飾されていることを特徴とする前記[1]~[4]のいずれかに記載のアジュバント組成物。
[6]前記[1]~[5]のいずれかに記載のアジュバント組成物および抗原または抗原性成分を含むワクチン組成物。
[7]前記抗原ががん抗原である前記[6]に記載のワクチン組成物。
本発明は、配列番号1に示される塩基配列およびその相補配列からなる二本鎖RNAと、配列番号2に示される塩基配列からなる一本鎖DNAとが結合している核酸を含有するアジュバント組成物を提供する。本発明のアジュバント組成物に含有される核酸(以下、「本発明の核酸」と記す)は、配列番号1に示される塩基配列およびその相補配列からなる二本鎖RNAと、配列番号2に示される塩基配列からなる一本鎖DNAとが結合している核酸であればよい。本発明の核酸の二本鎖RNA部分はTLR3活性化能を有しており、一本鎖DNA部分は樹状細胞のエンドソームに送達されることが確認されている。したがって、本発明の核酸は、樹状細胞のエンドソームに効率よく送達され、TLR3を活性化することにより免疫機能を賦活化することができる。
本発明は、上記本発明のアジュバント組成物と抗原または抗原性成分を含むワクチン組成物を提供する。抗原または抗原性成分としては、ウイルス抗原、細菌抗原、がん抗原、およびこれらの成分等が挙げられる。好ましくは、がん抗原である。がん細胞を皮下に移植して腫瘍を形成させたマウスに対して本発明の核酸とがん抗原を併用投与したところ、腫瘍を顕著に退縮させることができたことから、本発明のワクチン組成物は、がんワクチンとして非常に有用であることが確認されている。本発明のワクチン組成物は、上記本発明のアジュバント組成物に抗原または抗原性成分を添加することにより製造することができる。また、本発明のワクチン組成物は、上記本発明のアジュバント組成物と同様に製剤化して実施することができる。
(1)配列番号3に示される塩基配列からなる一本鎖核酸Aと、配列番号4に示される一本鎖核酸Bにより形成されていることを特徴とする核酸。
(2)哺乳動物に対して、前記(1)に記載の核酸およびがん抗原を投与することを特徴とするがんの治療方法。
(3)がんの治療に使用するための前記(1)に記載の核酸。
(4)がん治療薬を製造するための前記(1)に記載の核酸使用。
(1)cM362-140(化学合成核酸)の作製
表1に記載の各一本鎖核酸(S1、S2、S3、AS1、AS2およびAS3)は、株式会社ジーンデザインに委託して合成した。RNA部分の化学合成にはtBDMS RNA amiditeを、DNA部分の化学合成には一般的なDNA amiditeを、S化(ホスホロチオエート)部分はPADSを使用した。合成方法は固相担体を用いたホスホロアミダイト法(Scaringe, S. A.et al, ;J Am Chem 1998;120:11820-11821)を基本とし、最適化したパラメーターを用いて実行した。合成完了後、一般的な方法を用いて塩基部分および2’位に存在する保護基を除去し、逆相HPLCにて精製を行った後脱塩し、各一本鎖核酸を得た。
ODN-139 sense RNA (5’ primer)
5’-tgtaatacgactcactatagggaccagacaaagctggga-3’(配列番号19)
下線部はT7プロモーター配列
ODN-139 sense RNA (3’ primer)
5’-ggatacagtgccctgattaa-3’(配列番号20)
ODN-139 antisense RNA (5’ primer)
5’-tgtaatacgactcactataggatacagtgccctgattaa-3’(配列番号21)
下線部はT7プロモーター配列
ODN-139 antisense RNA (3’ primer)
5’-ccgtggtcatgctccgggaccagacaaagctggga-3’(配列番号22)
(1)血清を添加したPBS中の安定性
cM362-140およびcM362-139をそれぞれ、血清を含まないPBS、10%熱不活化FBS(ウシ胎児血清)、10%MS(マウス血清)または10%HS(ヒト血清)を含むPBSに20μg/mLの濃度で溶解し、37℃または42℃で60分間インキュベートした。インキュベート開始前(0分、血清を含まないPBSのみ)、5分後、15分後、30分後および60分後に、0.1μgの核酸が含まれるように溶液を取り、10×ローディングダイ(タカラバイオ)と混合し、臭化エチジウムを含む4%アガロースゲル(Nusieve 3:1 Agarose, Ronza)で電気泳動した。
結果を図3に示した。(A)がcM362-140の結果、(B)がcM362-139の結果である。37℃30分のインキュベーションでは、どちらの核酸も安定であったが、42℃30分のインキュベーションでは、インビトロ転写により作製したcM362-139は、血清(FBS、MS、HS)を含むPBS中で少し分解した。
PBSに代えてRNaseフリー水を用い、電気泳動に3%アガロースゲルを用いたこと以外は上記と同じ条件で安定性を検討した。
結果を図4に示した。(A)がcM362-140の結果、(B)がcM362-139の結果である。cM362-140はいずれの条件下でも安定であったが、cM362-139は、血清(FBS、MS、HS)存在下では部分的な分解が見られた。
以上の結果から、cM362-139よりcM362-140のほうが安定性に優れていることが明らかになった。
HEK293細胞(8×105cells/well)を6穴培養プレートに播種した。ヒトTLR3発現ベクター(400ng/well)または空ベクター(400ng/well)を、レポータープラスミドp-125(400ng/well)および内部コントロールベクターのphRL-TK(20ng/well、Promega)と共に、Lipofectamine2000(Invitrogen)を用いてHEK293細胞にトランスフェクションした。ヒトIFN-βプロモーター(-125~+19)を含むレポータープラスミドp-125は、東京大学の谷口博士から提供された。培地には、10%熱不活化ウシ胎児血清(FCS、Invitrogen)および抗生物質を含むダルベッコ改変イーグル培地(DMEM、Invitrogen)を用いた。
(A)ヒトTLR3発現HEK293細胞の培地に核酸を直接添加
(B)ヒトTLR3発現HEK293細胞の培地に核酸とDOTAPリポソーム型トランスフェクション試薬(Roche)を添加
(C)HEK293細胞の培地に核酸とLipofectamine2000(Invitrogen)を添加
ルシフェラーゼ活性の測定には、Dual-Luciferase Reporter Assay System(Promega)を用いた。上記(A)および(B)は核酸添加から6時間後に、上記(C)は核酸添加から24時間後に、それぞれルシフェラーゼ活性の測定を行った。
C57BL/6Jマウス(野生型:WT)およびTLR3ノックアウトマウス(TLR3KO、大阪大学の審良博士から提供された)からそれぞれ脾臓を摘出し、コラゲナーゼ処理を行った。フィルターを通過させ、溶血後、培地で洗浄し、anti-CD11c microbeadsを用いたMACS system(miltenyi biotech)でCD11c陽性細胞を単離し、脾臓DCとした。培地には、10%熱不活化ウシ胎児血清(FCS、Invitrogen)および抗生物質を含むダルベッコ改変イーグル培地(DMEM、Invitrogen)を用いた。なお、本明細書に記載の全ての動物実験は、北海道大学動物実験委員会が作成したガイドラインに従って実施された。
脾臓DCを5×105個/500μL培地/wellとなるように24穴プレートに分注し、核酸(cM362-140、cM362-139、ポリIC、またはdsRNA140)20μg/mLを(A)単独で、(B)DOTAPリポソーム型トランスフェクション試薬(Roche)と共に、または(C)Lipofectamine2000(Invitrogen)と共に添加して24時間培養した。24時間後、培養上精を回収し、TNF-α、IL-6およびIFN-βの産生量を測定した。TNF-αおよびIL-6の測定にはBD CBA Flex Set Systemを用いた。IFN-βの測定には、マウスIFN-β用ELISAキット(PBL Assay Science)を用いた。
野生型C57BL/6Jマウス(9週齢、メス)またはTLR3KOマウス(9週齢、メス)に、50μgのcM362-140、cM362-139またはポリICを腹腔内投与した。一群あたり3匹のマウスを用いた。各核酸溶液は、RNaseフリー水を用いて調製した。核酸投与後、1時間目、3時間目および6時間目に尾静脈から採血し、血清中のTNF-α、IL-6およびIL-10を測定した。測定には、BD CBA Flex Set Systemを用いた。
(1)腫瘍退縮効果
C57BL/6Jマウスの背部を剃毛し、2×106cells/200μL(PBS)のEG7細胞(C57BL/6マウスの胸腺種に由来するEL4細胞にオボアルブミン抗原を発現させたがん細胞)を皮下に移植して腫瘍を形成させ、腫瘍体積(cm3)(長径×短径2×0.4)を経時的に測定した。移植後8日目(腫瘍体積:約0.6cm3)に、cM362-140単独、OVA単独、またはcM362-140+OVAを腫瘍周辺の皮下に投与した。対照としてPBS(-)のみを同様に投与した。一群あたり4匹のマウスを用いた。cM362-140の用量は50μg、OVAの用量は100μgとし、いずれもPBS(-)に溶解して調製した。投与容量は50μLとした。一回目の投与から7日後(移植後15日目)に二回目の投与を行った。OVAには、エンドトキシンフリーOVA(Hyglos)を用いた。
cM362-140のアジュバント活性を評価するために、EG7担がんマウスから脾臓細胞を調製し、テトラマーアッセイを行った。上記(1)において、PBS、cM362-140単独、OVA単独、またはcM362-140+OVAの二回目の投与から7日後(移植後22日目)に、定法に従い脾臓細胞を調製した。得られた脾臓細胞をFITC-CD8α(BioLegend)、PerCP/Cy5.5-7AAD(BD Biosciences)、APC-CD3ε(BioLegend)およびPE-OVA-テトラマー(MBL)で染色し、OVA特異的CD8陽性T細胞(テトラマー+/CD8+/CD3+細胞)を検出し、その割合を求めた。
上記(2)で調製した脾臓細胞(2×106cells/200μL/well)を96穴培養プレートに播種し、OVAペプチド(SL8)100nM存在下で3日間培養した後、培養上清中のIFN-γ量をBD CBA Flex Set Systemを用いて測定した。
結果を図10に示した。図10から明らかなように、cM362-140+OVA投与群は、他群と比較して、脾臓細胞のIFN-γ産生量が有意に増加していた(**:p<0.01)。なお、データは平均値±SEで示し、統計解析には一元配置分散分析およびボンフェローニテストを用いた。
実施例6の各結果から、cM362-140は抗原特異的細胞傷害性T細胞の増殖と活性化を誘導し、がん抗原と併用することにより優れたアジュバント効果を奏することが明らかになった。
C57BL/6-B16同系NK感受性腫瘍移植モデル(Akazawa T., T. Ebihara, M. Okuno, Y. Okuda, K. Tsujimura, T. Takahashi, M. Ikawa, M. Okabe, T. Ebihara, M, Shingai, N. Inoue, M. Tanaka-Okamoto, H. Ishizaki, J. Miyoshi, M. Matsumoto, and T. Seya. 2007. Antitumor NK activation induced by the Toll-like receptor3-TICAM-1 (TRIF) pathway in myeloid dendritic cells. Proc. Natl. Acad. Sci. USA. 104: 252-257.)を用いて、NK細胞の活性化による移植がんの退縮効果を評価した。C57BL/6Jマウス(野生型:WT)およびTICAM-1ノックアウトマウス(TICAM-1 KO、発明者らが作製)の背部を剃毛し、6×105cells/200μL(PBS)のB16メラノーマ細胞(B16D8)を皮下に移植して腫瘍を形成させ、腫瘍体積(cm3)(長径×短径2×0.4)を経時的に測定した。移植後12日目に、in vivo-JetPEIと混合した150μgのcM362-140または蒸留水(DW)を腫瘍周辺の皮下に投与した。一群あたり3匹のマウスを用いた。
Claims (7)
- 配列番号3に示される塩基配列からなる一本鎖核酸Aと、配列番号4に示される一本鎖核酸Bにより形成されている二本鎖核酸を含有することを特徴とするアジュバント組成物。
- 一本鎖核酸Aおよび一本鎖核酸Bがいずれも化学合成核酸であることを特徴とする請求項1に記載のアジュバント組成物。
- 一本鎖核酸Aおよび一本鎖核酸Bが、化学合成された複数のフラグメントをライゲーションにより連結させて作製されていることを特徴とする請求項1または2に記載のアジュバント組成物。
- 一本鎖核酸Aおよび一本鎖核酸Bのいずれの末端にもリン酸基が結合していないことを特徴とする請求項1~3のいずれかに記載のアジュバント組成物。
- 一本鎖DNAを構成するヌクレオチドの全部がホスホロチオエート修飾されていることを特徴とする請求項1~4のいずれかに記載のアジュバント組成物。
- 請求項1~5のいずれかに記載のアジュバント組成物および抗原または抗原性成分を含むワクチン組成物。
- 前記抗原ががん抗原である請求項6に記載のワクチン組成物。
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|---|---|---|---|---|
| WO2008065752A1 (fr) * | 2006-11-30 | 2008-06-05 | National University Corporation Hokkaido University | Agent immunothérapeutique contenant un arndi en tant que principe actif |
| WO2012014945A1 (ja) * | 2010-07-28 | 2012-02-02 | 国立大学法人北海道大学 | アジュバント活性を有する新規核酸およびその利用 |
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| WO2018021400A1 (ja) | 2016-07-27 | 2018-02-01 | 国立大学法人北海道大学 | がん免疫アジュバント |
| CN109475632A (zh) * | 2016-07-27 | 2019-03-15 | 株式会社未来医疗革新开发 | 癌免疫佐剂 |
| KR20190034210A (ko) | 2016-07-27 | 2019-04-01 | 가부시키가이샤 츠기츠기세다이 이노베이숀 가이하츠 | 암 면역 아쥬반트 |
| JPWO2018021400A1 (ja) * | 2016-07-27 | 2019-05-23 | 株式会社次々世代イノベーション開発 | がん免疫アジュバント |
| EP3492098A4 (en) * | 2016-07-27 | 2020-02-12 | Advanced Innovation Development Co., Ltd. | IMMUNADJUVANS AGAINST CANCER |
| US11065331B2 (en) | 2016-07-27 | 2021-07-20 | Advanced Innovation Development Co. Ltd. | Immune adjuvant for cancer |
| JP7321489B2 (ja) | 2016-07-27 | 2023-08-07 | 株式会社先端免疫療法研究所 | がん免疫アジュバント |
| KR20230147758A (ko) | 2016-07-27 | 2023-10-23 | 가부시키가이샤 센탄 멘에키 료호 겐큐죠 | 암 면역 아쥬반트 |
| WO2024122480A1 (ja) | 2022-12-05 | 2024-06-13 | 学校法人青森山田学園 | 核酸アジュバント |
| EP4632069A1 (en) | 2022-12-05 | 2025-10-15 | Aomori Yamada Gakuen Educational Corporation | Nucleic acid adjuvant |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6453063B2 (ja) | 2019-01-16 |
| CA2969024C (en) | 2022-05-24 |
| AU2015356078B2 (en) | 2021-09-16 |
| JP2016108250A (ja) | 2016-06-20 |
| AU2015356078A1 (en) | 2017-06-29 |
| CN106999573A (zh) | 2017-08-01 |
| CN106999573B (zh) | 2021-10-19 |
| EP3228322A1 (en) | 2017-10-11 |
| CA2969024A1 (en) | 2016-06-09 |
| US20180280425A1 (en) | 2018-10-04 |
| EP3228322B8 (en) | 2019-06-19 |
| US10105385B1 (en) | 2018-10-23 |
| EP3228322B1 (en) | 2019-04-10 |
| EP3228322A4 (en) | 2018-05-30 |
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