WO2023106319A1 - 抗il-23抗体誘導用ワクチン組成物 - Google Patents
抗il-23抗体誘導用ワクチン組成物 Download PDFInfo
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- WO2023106319A1 WO2023106319A1 PCT/JP2022/045045 JP2022045045W WO2023106319A1 WO 2023106319 A1 WO2023106319 A1 WO 2023106319A1 JP 2022045045 W JP2022045045 W JP 2022045045W WO 2023106319 A1 WO2023106319 A1 WO 2023106319A1
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- peptide
- cell receptor
- vaccine composition
- receptor antigen
- antigen peptide
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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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- 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
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Definitions
- the present invention relates to vaccine compositions, and more particularly to vaccine compositions capable of inducing antibodies against IL-23 in vivo.
- Non-Patent Documents 1 and 2 Chronic inflammation is known to be involved in the development of a wide variety of chronic diseases, and it has been reported that IL-23 is the starting point for chronic inflammation (Non-Patent Documents 1 and 2).
- IL-23 is a heterodimer consisting of two subunit proteins, p19 and p40, and is classified as an inflammatory cytokine. IL-23 is involved in inducing proliferation of memory T cells and also contributes to promoting and stabilizing the differentiation of naive T cells into Th17 cells. Th17 cells differentiated and stabilized by IL-23 secrete multiple types of cytokines and inflammatory effectors to promote chronic inflammation.
- Non-Patent Document 3 Non-Patent Document 3
- IL-23 is involved in the development and progress of various diseases through chronic inflammation. Much knowledge is being accumulated.
- Psoriasis is a chronic inflammatory skin disease caused by Th17 cell abnormalities.
- Th17 cells are stimulated by IL-23, and the Th17 cells release the inflammatory cytokines IL-17 and IL-22, thereby causing an inflammatory response.
- the prevalence of psoriasis is estimated at 0.9-11.43% (WHO report, 2016).
- Most patients with psoriasis have mild to moderate psoriasis, but patients with severe psoriasis have complications such as serious skin symptoms and psoriatic arthritis, and their QOL is extremely low.
- Anti-TNF- ⁇ antibodies, anti-IL-17 antibodies or anti-IL-23 antibodies are administered when sufficient therapeutic effects cannot be obtained with standard treatments, especially anti-IL-23 antibody drugs have been clinically confirmed to be highly efficacious (Ustekinumab (trade name: Stelara®), which targets the p40 subunit; Risankizumab (trade name, SKYRIZI®), which targets the p19 subunit; ), Guselkumab (trade name Tremefia®) and Tildrakizumab (trade name Ilumya®), etc.).
- Stelara® trade name: Stelara®
- Risankizumab trade name, SKYRIZI®
- Guselkumab trade name Tremefia®
- Tildrakizumab trade name Ilumya®
- a peptide vaccine containing a peptide fragment at the junction of ⁇ -loop C and ⁇ -loop D of the mouse IL-23 p19 subunit is effective in mouse models of collagen-induced arthritis (CIA) and TNBS-induced colitis. It has been reported that it showed the property (Non-Patent Documents 4 and 5). Furthermore, in Patent Document 1, various peptide fragments contained in the corresponding sites in the human IL-23 p19 subunit were examined in detail and identified as B cell epitopes capable of inducing anti-IL-23 neutralizing antibodies. are doing.
- these peptide vaccines use proteins such as keyhole limpet hemocyanin (KLH) and virus-like particles (VLP) as carriers to enhance their immunogenicity, which results in high production costs and anti-immunity.
- KLH keyhole limpet hemocyanin
- VLP virus-like particles
- Adjuvants are used in combination, and there are safety risks.
- the present invention provides a novel anti-IL-23 antibody that has sufficient antigenicity in vivo and can efficiently induce anti-IL-23 antibodies without conjugating a carrier protein or using an adjuvant.
- An object of the present invention is to provide a peptide vaccine.
- a T-cell receptor antigen peptide having a specific amino acid sequence and a specific amino acid sequence in IL-23 p19 protein positions 151 to 158 of human p19; (corresponding to positions 152-159 of mouse p19) or a partially modified sequence thereof, can induce anti-IL-23 neutralizing antibodies very efficiently in vivo. rice field.
- Patent Document 1 contains a peptide fragment consisting of the amino acid sequence of positions 152 to 159 of human p19, with the position in human p19 shifted by one amino acid to the C-terminal side (thus, 7 amino acids out of 8 amino acids are common).
- a vaccine composition capable of inducing the production of antibodies against IL-23 comprising a complex of a T-cell receptor antigen peptide and a B-cell receptor antigen peptide, wherein the B-cell receptor antigen peptide has the following formula: (I): X1-X2-X3-X4-X5-X6-X7-X8 (I)
- X1 is S, A, G, T, K or R
- X2 is P, A, G, S, T, K or R
- X3 is S, A, G, T, K or R
- X4 is Q, A, G, T or N
- X5 is P, A, G, S, T, Q or N
- X6 is W, A, Y or F
- X7 is Q, A, G, T or N
- a vaccine composition wherein X8 is R, A, G or K.
- Item [2] The vaccine composition according to item [1], wherein the N-terminal amino acid of the conjugate is acetylated and/or the C-terminal amino acid of the conjugate is amidated.
- Item [3] The vaccine composition according to item [1] or [2], wherein X6 is W in the B-cell receptor antigen peptide.
- Item [4] The vaccine composition according to any one of items [1] to [3], wherein X7 is Q in the B cell receptor antigen peptide.
- Item [5] The vaccine composition according to any one of items [1] to [4], wherein X8 is R in the B cell receptor antigen peptide.
- Item [6] The vaccine composition according to any one of items [1] to [5], wherein the B-cell receptor antigen peptide comprises an amino acid sequence represented by any one of SEQ ID NOs: 2, 6-14 and 17-26.
- item [7] The vaccine composition according to any one of items [1] to [6], wherein the T-cell receptor antigen peptide comprises the amino acid sequence represented by SEQ ID NO:38.
- item [8] The vaccine composition according to any one of items [1] to [7], wherein the conjugate is bound between the C-terminus of the T-cell receptor antigen peptide and the N-terminus of the B-cell receptor antigen peptide. .
- Item [9] The vaccine composition according to any one of items [1] to [8], wherein the T-cell receptor antigen peptide and the B-cell receptor antigen peptide are linked via a linker.
- item [10] The vaccine composition according to item [9], wherein the linker is an amino acid or a peptide.
- item [12] The vaccine composition according to any one of items [1] to [11] for treatment or prevention of IL-23-related diseases.
- IL-23-related disease is psoriasis, psoriatic arthritis, rheumatoid arthritis, systemic lupus erythematosus, diabetes (preferably type I diabetes), atherosclerosis, inflammatory bowel disease (IBD)/Crohn's disease, multiple sclerosis , Behcet's disease, ankylosing spondylitis, Voigt-Koyanagi-Harada disease, chronic granulomatosis, hidradenitis suppurativa, antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis, neurodegenerative disease, atopic dermatitis, graft
- the vaccine composition according to item [12] which is selected from the group consisting of disease versus host and cancer.
- Section [1A] A method of inducing the production of antibodies to IL-23 in a subject, comprising administering to the subject an effective amount of a complex of a T-cell receptor antigen peptide and a B-cell receptor antigen peptide,
- the receptor antigen peptide has the following formula (I): X1-X2-X3-X4-X5-X6-X7-X8 (I)
- X1 is S, A, G, T, K or R
- X2 is P, A, G, S, T, K or R
- X3 is S, A, G, T, K or R
- X4 is Q, A, G, T or N
- X5 is P, A, G, S, T, Q or N
- X6 is W, A, Y or F
- X7 is Q, A, G, T or N
- the method wherein X8 is R, A, G or K.
- Section [1B] A conjugate of a T-cell receptor antigen peptide and a B-cell receptor antigen peptide for use in inducing the production of antibodies to IL-23, wherein the B-cell receptor antigen peptide has the following formula (I) : X1-X2-X3-X4-X5-X6-X7-X8 (I)
- X1 is S, A, G, T, K or R
- X2 is P, A, G, S, T, K or R
- X3 is S, A, G, T, K or R
- X4 is Q, A, G, T or N
- X5 is P, A, G, S, T, Q or N
- X6 is W, A, Y or F
- X7 is Q, A, G, T or N
- a conjugate wherein X8 is R, A, G or K.
- Section [1C] Use of a conjugate of a T-cell receptor antigen peptide and a B-cell receptor antigen peptide in the manufacture of a medicament for treating or preventing an IL-23-related disease, wherein the B-cell receptor antigen peptide comprises: Formula (I): X1-X2-X3-X4-X5-X6-X7-X8 (I)
- X1 is S, A, G, T, K or R
- X2 is P, A, G, S, T, K or R
- X3 is S, A, G, T, K or R
- X4 is Q, A, G, T or N
- X5 is P, A, G, S, T, Q or N
- X6 is W, A, Y or F
- X7 is Q, A, G, T or N
- the use wherein X8 is R, A, G or K.
- X1-X2-X3-X4-X5-X6-X7-X8 (I)
- X1 is S, A, G, T, K or R
- X2 is P, A, G, S, T, K or R
- X3 is S, A, G, T, K or R
- X4 is Q, A, G, T or N
- X5 is P, A, G, S, T, Q or N
- X6 is W, A, Y or F
- X7 is Q, A, G, T or N
- a B-cell receptor antigen peptide wherein X8 is R, A, G or K.
- the production of anti-IL-23 antibodies can be very efficiently induced in vivo without using carrier proteins or adjuvants. Therefore, inexpensive and safe treatment and/or prevention of diseases associated with IL-23 becomes possible.
- FIG. 1(a) is a schematic diagram of each AJP001 conjugate peptide used in Example 1.
- FIG. 1(b) is a graph showing the antibody titer of antiserum collected 5 weeks after the first administration of the peptide from mice administered with each AJP001 conjugate peptide in Example 1.
- FIG. 1(c) is a graph showing the binding ability to rmIL-23 of the blood serum of mice administered with each AJP001 conjugate peptide in Example 1, collected 5 weeks after the first administration of the peptide.
- FIG. 2 shows the results of a mouse immunogenicity evaluation test using the AJP001 conjugated peptide (SEQ ID NO: 2).
- FIG. 1(b) is a graph showing the antibody titer of antiserum collected 5 weeks after the first administration of the peptide from mice administered with each AJP001 conjugate peptide in Example 1.
- FIG. 1(c) is a graph showing the binding ability to rmIL-23 of the blood serum of mice
- FIG. 2(a) is a graph showing antibody titers (GMT) of sera collected over time from mice to which AJP001 conjugated peptide (SEQ ID NO: 2) was administered.
- FIG. 2(b) is a graph showing the binding ability to rmIL-23 of serum collected from mice administered with AJP001 conjugated peptide (SEQ ID NO: 2) 6 weeks after the initial administration.
- Figures 2(c) and (d) show the results of T cell activation evaluation (number of IFN- ⁇ -positive cells and number of IL-4-positive cells) in mice administered with AJP001 conjugate peptide (SEQ ID NO: 2). is.
- FIG. 3 is a diagram showing the results of a drug efficacy evaluation test on a mouse psoriasis model using the AJP001 conjugate peptide (SEQ ID NO: 2) in Example 3.
- FIG. 3(a) is a graph showing antibody titers in sera collected from hairless rats to which AJP001 conjugate peptide (SEQ ID NO: 2) was administered 6 weeks after the first administration.
- FIG. 3(b) shows the time course of ear inflammatory reaction (increase in ear thickness and inflammatory changes in tissue) in the group administered with the AJP001 conjugate peptide (SEQ ID NO: 2) and in the vehicle control group.
- FIG. 3(c) is a photograph of HE-stained specimens of auricles prepared under each condition.
- FIG. 3(d) is a graph showing the results of microscopic observation of HE-stained specimens of auricles prepared under each condition, and scoring of inflammatory cell infiltration, edema, and hyperplasia.
- FIG. 4 is a diagram showing the results of efficacy evaluation test for IL-23-induced mouse ear inflammation model using AJP001 conjugate peptide (SEQ ID NO: 2) in Example 4.
- FIG. 4(a) is a diagram showing temporal changes in auricle thickness under each condition.
- FIG. 4(b) is a graph showing mRNA expression of IL-17A, IL-22, IL-1 ⁇ , LCN-2 and CXCL-2 in auricle under each condition.
- FIG. 5 shows the results of a mouse immunogenicity evaluation test using the AJP001 conjugate peptide (SEQ ID NO: 6) in Example 6.
- FIG. 5(a) is a graph showing antibody titers (GMT) of sera collected over time from mice to which AJP001 conjugated peptide (SEQ ID NO: 6) was administered.
- FIG. 5(b) is a graph showing the binding ability to rhIL-23 of sera collected 6 weeks after the first administration from mice administered with the AJP001 conjugate peptide (SEQ ID NO: 6).
- FIG. 5(c) and (d) show the results of T cell activation evaluation (IFN- ⁇ -positive cell count and IL-4-positive cell count) in mice administered with AJP001 conjugate peptide (SEQ ID NO: 6).
- FIG. 4 is a diagram showing;
- FIG. 6 is a diagram showing the results of a drug efficacy evaluation test for IL-23-induced mouse ear inflammation model using AJP001 conjugate peptide (SEQ ID NO: 6) in Example 7.
- FIG. FIG. 6(a) is a diagram showing changes in auricle thickness on the 3rd day and the 4th day under each condition.
- FIG. 6(b) is a graph showing mRNA expression of IL-17A, IL-22, IL-1 ⁇ , LCN-2 and CXCL-2 in auricle under each condition.
- 7 shows the results of a monkey immunogenicity evaluation test using the AJP001 conjugate peptide (SEQ ID NO: 6) in Example 8.
- FIG. 7(a) is a graph showing the antibody titers (GMT) of sera collected over time from cynomolgus monkeys to which the AJP001 conjugate peptide (SEQ ID NO: 6) was administered.
- FIG. 7(b) is a graph showing the binding ability to rhIL-23 and rmIL-23 of sera collected from cynomolgus monkeys administered with AJP001 conjugated peptide (SEQ ID NO: 6) 6 weeks after the first administration.
- FIG. 7(c) is a graph evaluating the neutralizing activity of cynomolgus monkey-derived IgG to which the AJP001 conjugate peptide (SEQ ID NO: 6) was administered.
- FIG. 7(d) is a graph showing the results of epitope mapping of anti-IL-23 antibodies induced by AJP001 conjugated peptide (SEQ ID NO:6).
- FIG. 8-1 is a diagram showing a drug efficacy evaluation test for a TNBS-induced mouse colitis model using the AJP001 conjugate peptide (SEQ ID NO: 2) in Example 9.
- FIG. 3 shows the results of measuring antibody titer (GMT) and binding to mIL-23 by ELISA.
- GTT antibody titer
- FIG. 3 shows the results of measuring antibody titer (GMT) and binding to mIL-23 by ELISA.
- (c) shows changes in body weight before and after administration of TNBS in mice administered with AJP001 conjugated peptide (SEQ ID NO: 2) and then induced with TNBS for colitis.
- FIG. 8-2 is a diagram showing a drug efficacy evaluation test for a TNBS-induced mouse colitis model using the AJP001 conjugate peptide (SEQ ID NO: 2) in Example 9.
- FIG. (d) is a diagram showing the results of measuring the length (cm) of the large intestine on Day 10 of mice administered with AJP001 conjugate peptide (SEQ ID NO: 2) and then induced with TNBS for colitis; It is a photograph. 8-3 shows a drug efficacy evaluation test for a TNBS-induced mouse colitis model using the AJP001 conjugate peptide (SEQ ID NO: 2) in Example 9.
- FIG. 10 is a diagram showing the results of the experiment. 8-4 shows a drug efficacy evaluation test for a TNBS-induced mouse colitis model using the AJP001 conjugate peptide (SEQ ID NO: 2) in Example 9.
- the vaccine composition of the present invention is capable of inducing the production of antibodies against IL-23, including complexes of T-cell receptor antigen peptides and B-cell receptor antigen peptides (thus treating or preventing IL-23-related diseases).
- a vaccine composition (hereinafter sometimes referred to as a "vaccine composition of the invention") is provided.
- the left end is the N-terminus (amino terminus) and the right end is the C-terminus (carboxyl terminus) according to the convention of peptide designation.
- the peptide complex contained as an active ingredient in the vaccine composition of the present invention has a carboxyl group (—COOH), carboxylate (—COO ⁇ ), amide (—CONH 2 ) or ester (—COOR) at the C-terminus. There may be.
- R in the ester includes, for example, C 1-6 alkyl groups such as methyl, ethyl, n-propyl, isopropyl and n-butyl; C 3-8 cycloalkyl groups such as cyclopentyl and cyclohexyl; C 6-12 aryl groups such as , ⁇ -naphthyl; phenyl-C 1-2 alkyl groups such as benzyl, phenethyl; C 7- such as ⁇ -naphthyl-C 1-2 alkyl groups such as ⁇ -naphthylmethyl 14 aralkyl group; pivaloyloxymethyl group and the like are used.
- C 1-6 alkyl groups such as methyl, ethyl, n-propyl, isopropyl and n-butyl
- C 3-8 cycloalkyl groups such as cyclopentyl and cyclohexyl
- the peptide conjugate of the present invention includes those in which the carboxyl group is amidated or esterified.
- the ester in this case, for example, the above-described C-terminal ester or the like is used.
- the amino group of the amino acid residue at the N-terminus is protected with a protecting group (for example, a formyl group, a C 1-6 acyl group such as a C 1-6 alkanoyl such as an acetyl group, etc.).
- a protecting group for example, a formyl group, a C 1-6 acyl group such as a C 1-6 alkanoyl such as an acetyl group, etc.
- substituents on the side chains of amino acids in the molecule e.g., -OH, -SH, amino group, imidazole group, indole group, guanidino group etc.
- an appropriate protecting group e.g, a C 1-6 acyl group such as a formyl group, a C 1-6 alkanoyl group such as an acetyl group, etc.
- the peptide conjugate is acetylated at the amino group of the N-terminal amino acid residue and/or amidated at the C-terminal carboxyl group.
- the peptide complex contained as an active ingredient in the vaccine composition of the present invention partially contains a B-cell receptor antigen peptide.
- the B cell receptor is a receptor expressed on the surface of B cells. B cells stimulated by an antigenic peptide proliferate and secrete the B cell receptor as an antibody against the antigenic peptide.
- the B-cell receptor antigen peptide in the vaccine composition of the present invention is Formula (I): X1-X2-X3-X4-X5-X6-X7-X8 A peptide containing the amino acid sequence shown in, or a peptide consisting of the 8 amino acids,
- X1 is S (serine), A (alanine), G (glycine), T (threonine), K (lysine) or R (arginine);
- X2 is P (proline), A (alanine), G (glycine), S (serine), T (threonine), K (lysine) or R (arginine);
- X3 is S (serine), A (alanine), G (glycine), T (threonine), K (lysine) or R (arginine);
- X4 is Q (glutamine), A (alanine), G (glycine), T (threonine) or N (asparagine);
- X6 in formula (I) can be W.
- X7 in formula (I) can be Q.
- X8 in formula (I) can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q or A; X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R or A;
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q or A; X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S, X4 is Q or A; X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q, X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q or A; X5 is P, A, S, T or Q (provided that when X2 is S, X5 is P, A or Q); X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S, X2 is P, S or T; X3 is S, X4 is Q, X5 is P, S, T or Q (if X2 is S then X5 is P or Q); X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S, X2 is P, A, S or T; X3 is S, X4 is Q or A; X5 is P, X6 is W or A; X7 is Q or A; X8 can be R.
- the 8 amino acids represented by formula (I) can be any of the amino acid sequences represented by SEQ ID NOs: 2, 6-14 and 17-26.
- a part of the complex contained in the vaccine composition of the present invention is a T cell receptor antigen peptide.
- the T-cell receptor antigen peptide is not particularly limited as long as it forms a complex with MHC class II, is recognized by the CD3/TCR complex and CD4, and transmits a signal into CD3-positive cells.
- MHC class II includes, for example, HLA-DR, HLA-DQ and HLA-DP in humans, H-2A or H-2B in mice, and ⁇ and ⁇ chains, respectively (for example, HLA-DR It is a dimer consisting of HLA-DRA as an ⁇ chain and HLA-DRB1) as a ⁇ chain, preferably HLA-DR, HLA-DQ or HLA-DP.
- the T cell receptor antigen peptide is not particularly limited as long as it contains an epitope sequence that can be presented on the MHC class II molecule of antigen-presenting cells to activate helper T cells.
- UBITh peptide UITh (registered trademark) 1: ISITEIKGVIVHRIETILF (SEQ ID NO: 39), UBITh ( Registered trademark) 2: KKKIITITRIITIITTID (SEQ ID NO: 40), UBITh (registered trademark) 3: ISISEIKGVIVHKIETILF (SEQ ID NO: 41), ISITEIRTVIVTRIETILF (SEQ ID NO: 42), see US patent no.
- Tetanous toxisoid A peptide (TTaa830-843 peptide: QYIKANSKFIGITE (SEQ ID NO: 43)) and the like can be used.
- AJP001 induces the secretion of IL- ⁇ 1 and IL-18 through activation of the NLRP3 inflammasome, and stimulates the innate immune system by inducing the production of TNF- ⁇ and IL-6 through the NF- ⁇ B pathway. Since it can be activated, it is particularly preferred as a T-cell receptor antigen peptide in the present invention.
- the T-cell receptor antigen peptide and the B-cell receptor antigen peptide bind to form a complex, and the binding occurs between the end of one peptide chain and the end of the other peptide chain.
- a bond between the amino acid side chain of one peptide and the terminal of the other peptide chain, or a bond between both amino acid side chains preferably the terminal of one peptide chain and the other more preferably the C-terminus of one peptide chain and the N-terminus of the other peptide chain, more preferably the C-terminus of the T cell receptor antigen peptide and the B cell Linkage to the N-terminus of the receptor antigen peptide.
- the two terminal amino acids may be directly linked by a peptide bond, or a linker (also referred to herein as a "spacer") may be used. may be connected via The linker can connect the T-cell receptor antigen peptide and the B-cell receptor antigen peptide, is incorporated into the antigen-presenting cell, and releases the helper T-cell epitope in the T-cell receptor antigen peptide and presents it on the MHC class II molecule. It is not particularly limited as long as it can be used.
- amino acids other than ⁇ -amino acids such as ⁇ -aminocaproic acid, ⁇ -aminoalanine, ⁇ -aminobutyric acid, 7-aminoheptanoic acid, 12-aminolauric acid and p-aminobenzoic acid can be used.
- L-amino acids eg, glutamic acid, cysteine, lysine
- the amino acid linker is ⁇ -aminocaproic acid.
- any peptide linker consisting of 2 to 15 amino acids can be used.
- G linker which is a peptide linker composed of glycine (Gly) or methylated glycine (MeG)
- GS linker which is a peptide linker composed of Gly or MeG and Ser.
- PEG linkers comprising polyethylene glycol (PEG) or derivatives of polyethylene glycol can be used.
- a PEG linker further containing one or more selected from glycine (Gly), serine (Ser), glutamic acid (Glu), arginine (Arg) and lysine (Lys) can also be used.
- the complex in which the B-cell receptor antigen peptide and the T-cell receptor antigen peptide are linked may further comprise an additional amino acid. Addition of such amino acids is permissible as long as the desired effect of the vaccine composition of the present invention is obtained.
- the amino acid sequence to be added is not particularly limited, but examples include tags for facilitating detection, purification, etc. of complexes. Examples of tags include Flag tag, histidine tag, c-Myc tag, HA tag, AU1 tag, GST tag, MBP tag, fluorescent protein tag (eg, GFP, YFP, RFP, CFP, BFP, etc.), immunoglobulin Fc tag, and the like. mentioned.
- the position to which the amino acid sequence is added is not particularly limited, but is preferably the N-terminus and/or C-terminus of the complex.
- the conjugate in the vaccine composition of the present invention can be produced by a solid phase synthesis method (Fmoc method and Boc method) or a liquid phase synthesis method according to a known general peptide synthesis protocol.
- a solid phase synthesis method Fmoc method and Boc method
- a liquid phase synthesis method according to a known general peptide synthesis protocol.
- the peptide conjugate in the vaccine composition of the present invention may be conjugated with a carrier protein to enhance its immunogenicity.
- a carrier protein is generally a substance that confers immunogenicity by binding to a molecule (hapten) that is not immunogenic due to its small molecular weight, and includes those known in the art.
- carrier proteins include bovine serum albumin (BSA), rabbit serum albumin (RSA), ovalbumin (OVA), keyhole limpet hemocyanin (KLH), thyroglobulin (TG), and diphtheria toxin.
- BSA bovine serum albumin
- RSA rabbit serum albumin
- OVA ovalbumin
- KLH keyhole limpet hemocyanin
- TG thyroglobulin
- diphtheria toxin examples include detoxified diphtheria toxin (CRM197), immunoglobulins, and the like.
- a carrier protein can be conjugated to the N-terminus or C-terminus of the conjugate in the vaccine composition of the invention.
- a cysteine residue is introduced into the antigen peptide of the present invention, and conjugation can be performed by binding to the amino group of the carrier protein via the side chain SH group of the cysteine (MBS law).
- Conjugation can also be achieved by bonding amino groups such as ⁇ -amino groups and ⁇ -amino groups of lysine residues of proteins (glutaraldehyde method).
- the conjugate in the vaccine composition of the invention is not conjugated to a carrier protein.
- helper T-cell epitopes in the T-cell receptor antigen peptide are released, presented on MHC class II molecules, recognized by T-cell receptors on helper T-cells, Activate the helper T cells.
- Activated helper T cells also recognize B cells that present the helper T cell epitope on MHC class II molecules, secrete cytokines such as IFN- ⁇ , activate B cells, and release B cell receptor antigens. It can strongly promote the production of antibodies against the peptide (IL-23 p19). Therefore, high antibody production can be induced without using a carrier protein.
- a carrier protein When a carrier protein is used in combination with a peptide vaccine, a specific antibody against the carrier protein may be induced, resulting in unwanted side effects. Moreover, a peptide vaccine conjugated with a carrier protein is not preferable in that the manufacturing cost increases.
- the vaccine composition of the present invention may further contain an adjuvant that is pharmaceutically acceptable and compatible with the active ingredient.
- adjuvants are generally substances that non-specifically enhance a host's immune response, and numerous adjuvants are known in the art.
- the adjuvant used in the vaccine composition of the present invention is not particularly limited as long as it can non-specifically enhance the immune response. squalane, saponin and the like.
- the vaccine composition of the present invention is not used in combination with an adjuvant.
- an adjuvant for example, when a peptide capable of activating the innate immune system, such as AJP001, is used as the T-cell receptor antigen peptide, the vaccine composition of the present invention alone is sufficient to induce the production of antibodies. no.
- the use of adjuvants may induce unexpected side effects, and not using them reduces safety risks.
- the vaccine composition of the present invention can be provided as a pharmaceutical composition containing a pharmaceutically acceptable carrier in addition to the complex of the T-cell receptor antigen peptide and the B-cell receptor antigen peptide.
- a pharmaceutically acceptable carrier may be appropriately selected depending on the dosage form.
- Lubricants, citric acid, menthol and other fragrances, sodium benzoate, sodium hydrogen sulfite and other preservatives, sodium citrate and other stabilizers, methylcellulose, polyvinylpyrrolidone and other suspending agents, surfactants and other dispersing agents examples include, but are not limited to, diluents such as water, saline, base waxes, and the like.
- the vaccine composition of the present invention can be administered to mammals orally or parenterally.
- a complex of a T-cell receptor antigen peptide and a B-cell receptor antigen peptide can be degraded in the stomach, so parenteral administration is preferred.
- Formulations suitable for oral administration include liquids, capsules, sachets, tablets, suspensions, emulsions and the like.
- Formulations suitable for parenteral administration include aqueous and non-aqueous isotonic sterile injection solutions, which contain anti-oxidants. , buffers, bacteriostatic agents, tonicity agents and the like.
- aqueous and non-aqueous sterile suspensions which may contain suspending agents, solubilizers, thickeners, stabilizers, preservatives and the like.
- the preparation can be enclosed in a container such as an ampoule or a vial in units of unit doses or multiple doses.
- the active ingredient and a pharmaceutically acceptable carrier can be lyophilized and stored in such a manner that they can be dissolved or suspended in an appropriate sterile vehicle immediately prior to use.
- the content of the active ingredient (ie, peptide complex) in the vaccine composition is generally 0.001 to 100% by weight, preferably 0.05 to 99% by weight, more preferably 0.1 to 100% by weight of the entire composition. Although it is about 90% by weight, it is not limited to this.
- the vaccine composition of the present invention can be administered to mammals that can suffer from diseases associated with abnormally enhanced signal transduction involving IL-23 (hereinafter sometimes referred to as “IL-23-related diseases”).
- mammals include, for example, rodents such as mice, pets such as dogs, livestock such as pigs, horses, and cows, and primates such as humans, monkeys, orangutans, and chimpanzees, with humans being particularly preferred.
- the dosage of the vaccine composition of the present invention varies depending on the subject to be administered, the administration method, the administration form, and the like. is administered in the range of 1 ⁇ g to 300,000 ⁇ g, preferably in the range of 20 ⁇ g to 30,000 ⁇ g per dose, usually 2 to 3 times over 4 to 12 weeks, and when the antibody titer decreases One additional dose can be administered each time.
- Diseases that can be treated or prevented by the vaccine composition of the present invention are the IL-23-related diseases described above.
- diseases include, for example, psoriasis, psoriatic arthritis, rheumatoid arthritis, systemic lupus erythematosus, diabetes (preferably type I diabetes), atherosclerosis, inflammatory bowel disease (IBD)/Crohn's disease, multiple sclerosis.
- Behcet's disease ankylosing spondylitis, Voigt-Koyanagi-Harada disease, chronic granulomatosis, hidradenitis suppurativa, antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis, neurodegenerative diseases (preferably Alzheimer's disease or multiple sclerosis), atopic dermatitis, graft-versus-host disease or cancer (preferably esophageal carcinoma, colon cancer, lung adenocarcinoma, small cell carcinoma, or squamous cell carcinoma of the oral cavity) ), but are not limited to these.
- ANCA antineutrophil cytoplasmic antibody
- the vaccine compositions of the invention are used to treat or prevent psoriasis, psoriatic arthritis, neurodegenerative diseases (particularly Alzheimer's disease), diabetes (particularly type I diabetes), atherosclerosis, or IBD. can be used. Also, in particularly preferred embodiments, the vaccine compositions of the present invention can be used to treat or prevent psoriasis, psoriatic arthritis, or IBD.
- the vaccine composition of the present invention may be used in combination with existing therapeutic agents for IL-23-related diseases.
- existing therapeutic agents for IL-23-related diseases for example, in the treatment of psoriasis, by starting treatment with an antibody drug with a high immediate effect during the active phase of the disease and starting administration of the vaccine composition of the present invention during the remission phase, both QOL of the patient and treatment cost can be achieved. can be achieved.
- Treatment of a disease as used herein may include not only cure of the disease, but also remission of the disease and amelioration of the degree of the disease.
- prevention of a disease as used herein includes delaying the onset of the disease in addition to preventing the onset of the disease.
- prevention of a disease herein can also include preventing the recurrence of the disease after treatment or delaying the recurrence of the disease after treatment.
- vaccine composition in this specification can also be replaced with “pharmaceutical composition” or "drug”.
- Methods for treating or preventing IL-23-related disease A method (hereinafter sometimes referred to as the "method of the present invention") is provided.
- Vaccine composition of the present invention In the method of the present invention, subjects to be treated or prevented, conditions for administration of the vaccine composition of the present invention, specific examples of IL-23-related diseases, etc. are the same as those described in "1. Vaccine composition of the present invention”.
- B-cell receptor antigen peptide The present invention also provides a B-cell receptor antigen peptide itself that constitutes a part of the peptide complex contained in the vaccine composition of the present invention (hereinafter referred to as the "B-cell receptor antigen peptide of the present invention"). (sometimes referred to as
- the B-cell receptor antigen peptide of the present invention is Formula (I): X1-X2-X3-X4-X5-X6-X7-X8 A peptide containing the amino acid sequence shown in, or a peptide consisting of the 8 amino acids,
- X1 is S (serine), A (alanine), G (glycine), T (threonine), K (lysine) or R (arginine);
- X2 is P (proline), A (alanine), G (glycine), S (serine), T (threonine), K (lysine) or R (arginine);
- X3 is S (serine), A (alanine), G (glycine), T (threonine), K (lysine) or R (arginine);
- X4 is Q (glutamine), A (alanine), G (glycine), T (threonine) or N (asparagine);
- X5 is P
- X6 in formula (I) can be W.
- X7 in formula (I) can be Q.
- X8 in formula (I) can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q or A; X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R or A;
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q or A; X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S, X4 is Q or A; X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q, X5 is P, A, S, T or Q; X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S or A; X2 is P, A, S or T; X3 is S or A; X4 is Q or A; X5 is P, A, S, T or Q (provided that when X2 is S, X5 is P, A or Q); X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S, X2 is P, S or T; X3 is S, X4 is Q, X5 is P, S, T or Q (if X2 is S then X5 is P or Q); X6 is W or A; X7 is Q or A; X8 can be R.
- formula (I) is X1 is S, X2 is P, A, S or T; X3 is S, X4 is Q or A; X5 is P, X6 is W or A; X7 is Q or A; X8 can be R.
- the 8 amino acids represented by formula (I) can be any of the amino acid sequences represented by SEQ ID NOs: 2 and 6-14 and 17-26.
- the B-cell receptor antigen peptide of the present invention can be used alone as a peptide vaccine that induces anti-IL-23 antibodies. It can be used as a more immunogenic peptide vaccine. As a particularly preferred embodiment of the B-cell antigen receptor peptide of the present invention, it can be used as a peptide vaccine capable of efficiently inducing anti-IL-23 antibodies by using the AJP001-conjugated form.
- This crude peptide was purified using a reverse-phase HPLC column and eluted with a gradient of 0.1% TFA-H 2 O/CH 3 CN. Fractions containing the desired product were collected and lyophilized to obtain the desired peptide.
- HPLC Analysis Method for Peptide Purity of the synthesized peptide was measured by HPLC under the following analysis conditions.
- HPLC model Shimadzu Corporation LCLC-20ADXR Measurement wavelength: 220 nm Flow rate: 0.31 mL per minute
- Mobile phase A 0.1% trifluoroacetic acid aqueous solution
- Mobile phase B acetonitrile
- Gradient conditions The concentration of mobile phase B is increased linearly from 5% to 80% over 30 minutes. (5 ⁇ 80% buffer B in 30min)
- Mass Spectrometry of Peptide The mass of the synthesized peptide was measured by MALDI-TOF-MS under the following analysis conditions.
- MALDI-TOF-MS Model Bruker autoflex speed Matrix: 2,5-Dihydroxybenzoic acid Dissolution solution: mixed solution of 0.1% trifluoroacetic acid aqueous solution and acetonitrile
- Example 1 Antibody production evaluation test using AJP001 conjugate peptide (mouse IL-23) Selected as an antigen, a complex (AJP001 conjugate peptide) was prepared by conjugating the T cell antigen AJP001 (Table 2, SEQ ID NO: 38) and ⁇ -aminocaproic acid (sometimes referred to as "Ahx") as a spacer. (Manufacturing was entrusted to Peptide Institute Co., Ltd.). In the present specification, an AJP001 conjugate peptide whose B-cell epitope has the amino acid sequence represented by SEQ ID NO: "X" is referred to as "AJP001 conjugate peptide (SEQ ID NO: X)" and the like.
- a 96-well plate immobilized with an epitope peptide dissolved at 10 ⁇ g/mL in carbonate buffer was added with serially diluted serum using 5% skim milk/PBS. and allowed to stand overnight at 4°C.
- an HRP-labeled anti-mouse IgG antibody (GE Healthcare) diluted with 5% skimmed milk/PBS was added and shaken at room temperature for 3 hours.
- a TMB solution SIGMA
- Antibody titers (GMT) were measured for all collected sera, and rmIL-23 binding ability for sera at 6 weeks was measured by ELISA (same method as in Example 1).
- Antibody titers and induced antibody binding to rmIL-23 at each time point are shown in FIGS. 2(a) and (b), respectively.
- ELISPOT assay was performed as an evaluation of T cell activation.
- AJP001 conjugated peptide SEQ ID NO: 2
- saline aline
- spleens were detected 7 weeks after the first dose. was taken.
- the harvested spleen was triturated using a syringe and cell strainer. Then, this was washed and suspended with HBSS(-), red blood cells were removed using ACK Buffer (Thermo Fisher Scientific), and splenocytes were isolated.
- Mouse IFN- ⁇ ELISpot assay kit and Mouse IL-4 ELISpot assay kit (R&D systems)
- 10% FBS/1% penicillin/streptomycin/4 ng/mL was applied to a 96-well plate on which each capture antibody was immobilized.
- the rmIL-2-containing RPMI1640 medium (culture medium) was adjusted to 2.5 ⁇ 10 ⁇ 6 cells/mL and seeded at 100 ⁇ L/well.
- splenocytes from mice administered the AJP001 conjugated peptide showed (2) 10 ⁇ g/mL T cell antigen AJP001 (SEQ ID NO: 38) Stimulation with only and (3) 10 ⁇ g/mL AJP001 conjugated peptide (SEQ ID NO: 2) increased the number of IFN- ⁇ and IL-4 positive cells. This confirmed the activation of AJP001-conjugated peptide-specific T cells.
- 2% imiquimod (IMQ) was intermittently applied to the auricle four times at daily intervals to prepare a psoriasis model.
- a 2% IMQ application group was provided as a control group.
- the drug efficacy was evaluated by measuring the thickness of the auricle with a thickness gauge (Mitutoyo) from the first day of IMQ application to the 8th day.
- histopathological evaluation of the auricle tissue was performed on the 8th day.
- FIG. 3 shows the antibody titer, ear thickness and histological examination results for the AJP001 conjugated peptide (SEQ ID NO: 2).
- "*” means significant (P ⁇ 0.05) compared to "2% IMQ”.
- “#” means significant (P ⁇ 0.05) compared to “Day 0” in (b) and “Normal (normal group)” in (d).
- auricle was examined under the same conditions on day 3 of rmIL-23 administration. Taken.
- a normal group was set without administration of rmIL-23.
- the collected auricles were freeze-pulverized under liquid nitrogen, and total RNA was extracted using RNeasy Fibrous Tissue Kit (Qiagen), followed by High-Capacity cDNA Reverse Transcription Kit (Applied Biomedical Inc) cDNA was prepared from the extracted RNA.
- FIG. 4 shows the efficacy evaluation results of the AJP001 conjugate peptide (SEQ ID NO: 2) on ear thickness and mRNA expression.
- "*” means significant (P ⁇ 0.05) compared to "rmIL-23”.
- "#” means significant (P ⁇ 0.05) compared to "Day 0" in (a) and compared to "Normal (normal group)” in (b) .
- mice administered with the AJP001 conjugate peptide SEQ ID NO: 2
- the rmIL-23 group exhibited auricular inflammatory reactions (increased auricle thickness and auricular A suppressive effect on IL-17A, IL-22, IL-1 ⁇ , LCN-2, and CXCL-2 mRNA expression in cells) was confirmed.
- Example 5 Antibody production and activity evaluation using AJP001 conjugate peptide (human IL-23) Epitope candidate peptides derived from human IL-23 (SEQ ID NOs: 6 to 37) shown in Table 1 were selected as B cell antigens. , T cell antigen AJP001 (Table 2, SEQ ID NO: 38) and ⁇ -aminocaproic acid as a spacer to synthesize a conjugate (AJP001 conjugate peptide) (synthesis was entrusted to Toray Research Center, Inc.).
- GTT antibody titer
- the ratio of the absorbance of wells to which antiserum derived from mice administered with each AJP001 conjugate peptide (SEQ ID NOS: 6 to 37) was added to the absorbance of wells to which normal mouse serum was added was calculated. and evaluated as a binding ratio to normal serum.
- Red blood cells were then removed using ACK Buffer (Thermo Fisher Scientific) to isolate splenocytes.
- Splenocytes were adjusted to 2.5 ⁇ 10 ⁇ 6 cells/mL with 10% FBS/1% penicillin/streptomycin/4 ng/mL rmIL-2-containing RPMI1640 medium (culture medium), and 100 ⁇ L/ Seeded on a 96-well plate with wells.
- mice administered with each AJP001 conjugate peptide After adding antiserum (final concentration 15-fold) and rhIL-23 (final concentration 10 ng/mL) from mice administered with each AJP001 conjugate peptide to the culture medium, reacting at 37°C for 2 hours, splenocytes was added to a 96-well plate seeded with 100 ⁇ L/well, and cultured for 3 days in a 37° C./5% CO 2 incubator. In addition, untreated wells and control wells to which normal mouse serum and rhIL-23 were added were set.
- IL-17A/F in the culture supernatant was measured with Mouse IL-17A/F ELISA kit (R & D Systems), untreated well (A), control well (B) and mice administered with each AJP001 conjugate peptide
- the ratio (%) of IL-17 to normal serum was calculated from each IL-17 concentration in the antiserum-added well (C) according to the following formula, and the neutralizing activity was evaluated.
- Table 3 shows the antibody titer, rhIL-23 binding and neutralizing activity of each AJP001 conjugate peptide.
- AJP001 conjugated peptide SEQ ID NO: 6
- the spleen was harvested at An ELISPOT assay was performed on the collected spleens using a Mouse IFN- ⁇ ELISpot assay kit and a Mouse IL-4 ELISpot assay kit (R&D Systems). The results are shown in FIGS. 5(c) and (d).
- FIG. 6 shows the efficacy evaluation results of the AJP001 conjugate peptide (SEQ ID NO: 6) on ear thickness and mRNA expression.
- “*” means significant (P ⁇ 0.05) compared to "rhIL-23”.
- “#” means significant (P ⁇ 0.05) compared to “Normal”.
- mice administered with the AJP001 conjugated peptide As shown in FIG. 6, in mice administered with the AJP001 conjugated peptide (SEQ ID NO: 6), the ear inflammatory response (increased ear thickness and IL-17A, IL -22, IL-1 ⁇ , LCN-2 and CXCL-2 mRNA expression) was confirmed.
- IgG was purified from the monkey antiserum at 6 weeks after the first administration with Protein G HP spin trap (GE Healthcare), and the IL-17 production when mouse splenocytes were stimulated with rhIL-23 The action was evaluated (same method as in Example 5). The results are shown in FIG. 7(c).
- AJP001 conjugated peptide SEQ ID NO:6
- a 96-well plate on which the AJP001 conjugate peptide (SEQ ID NO: 6) was immobilized was blocked with goat serum.
- AJP001 conjugated peptide (SEQ ID NO: 6)-derived monkey serum was added with 100 ⁇ g/mL of AJP001 conjugated peptide (SEQ ID NO: 6-14) and allowed to react overnight at 4°C. The reaction solution was added to the solid-phased plate and allowed to stand overnight at 4°C.
- Control wells to which only monkey serum derived from the AJP001 conjugate peptide (SEQ ID NO: 6) was added and untreated wells to which no serum was added were set. After washing the wells with PBS-T, HRP-labeled Anti-Monkey IgG antibody (Abcam) diluted with 5% skimmed milk/PBS was added and shaken at room temperature for 3 hours. After washing the wells with PBS- T , a TMB solution was added and allowed to stand in the dark for 30 minutes. Using absorbance values of control wells (A), untreated (B), and monkey serum (C) incubated with AJP001 conjugated peptides (SEQ ID NOs: 6 to 14), the binding rate was calculated by the following formula.
- CpG Type-B/K CpG-ODN K3
- the first administration day of TNBS was defined as Day 0, and 3 mg/body of TNBS was administered on Day 7 to induce colitis.
- a Normal group and a 30% EtOH group without administration of TNBS, a Saline/TNBS group with administration of TNBS but no peptide, and a CpG/TNBS group with administration of adjuvant only were provided.
- Body weights were measured on Days 1, 2, 3, 4, 7, 8, 9 and 10, including the days of TNBS administration. After euthanasia by heart blood collection under deep anesthesia on Day 10, the antibody titer (GMT) and mIL-23 binding of the serum obtained were measured by ELISA (same method as in Example 1).
- cytokine mRNA expression was measured in a 2 cm portion from the anus, and histopathological examination was performed in a 2 to 4 cm portion. Cytokine mRNA expression was obtained by crushing beads under ice-cold conditions, extracting Total RNA using RNeasy Fibrous Tissue Kit (Qiagen), and then using High-Capacity cDNA Reverse Transcription Kit (Applied Biomedical Inc). cDNA was prepared from the extracted RNA.
- the HE-stained specimen was observed under a microscope and scored by inflammatory cell infiltration (Grade: 0-3), colonic tissue damage depth (Grade: 0-3), and colonic mucosal damage range (Grade: 0-4), and the total score was calculated. Calculated.
- peptide vaccines for the treatment and/or prevention of various IL-23-related diseases can be produced at low cost, and are extremely useful in the field of pharmaceutical production.
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Abstract
Description
加えて本発明者らは、当該ペプチドワクチンの投与により、マウス大腸炎モデルにおいて腸炎に伴う症状が著しく改善することをも確認した。
本発明者らは、かかる知見に基づいてさらに研究を進めることによって本発明を完成するに至った。
項[1]
T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとの複合体を含む、IL-23に対する抗体の産生を誘導し得るワクチン組成物であって、該B細胞受容体抗原ペプチドが、以下の式(I):
X1-X2-X3-X4-X5-X6-X7-X8(I)
で表され、式中、
X1がS、A、G、T、KまたはRであり、
X2がP、A、G、S、T、KまたはRであり、
X3がS、A、G、T、KまたはRであり、
X4がQ、A、G、TまたはNであり、
X5がP、A、G、S、T、QまたはNであり、
X6がW、A、YまたはFであり、
X7がQ、A、G、TまたはNであり、
X8がR、A、GまたはKである、ワクチン組成物。
項[2]
複合体のN末端のアミノ酸がアセチル化されている、および/または複合体のC末端のアミノ酸がアミド化されている、項[1]記載のワクチン組成物。
項[3]
前記B細胞受容体抗原ペプチドにおいてX6がWである、項[1]または[2]記載のワクチン組成物。
項[4]
前記B細胞受容体抗原ペプチドにおいてX7がQである、項[1]~[3]のいずれか一項記載のワクチン組成物。
項[5]
前記B細胞受容体抗原ペプチドにおいてX8がRである、項[1]~[4]のいずれか一項記載のワクチン組成物。
項[6]
B細胞受容体抗原ペプチドが、配列番号2、6~14および17~26のいずれかで表されるアミノ酸配列を含む、項[1]~[5]のいずれか一項記載のワクチン組成物。
項[7]
T細胞受容体抗原ペプチドが配列番号38で表されるアミノ酸配列を含む、項[1]~[6]のいずれか一項記載のワクチン組成物。
項[8]
複合体が、T細胞受容体抗原ペプチドのC末端とB細胞受容体抗原ペプチドのN末端との間で結合している、項[1]~[7]のいずれか一項記載のワクチン組成物。
項[9]
T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとがリンカーを介して結合されている、項[1]~[8]のいずれか一項記載のワクチン組成物。
項[10]
前記リンカーがアミノ酸またはペプチドである、項[9]記載のワクチン組成物。
項[11]
アジュバントとしての添加物を含有しない、項[1]~[10]のいずれか一項記載のワクチン組成物。
項[12]
IL-23関連疾患の治療または予防のための、項[1]~[11]のいずれか一項記載のワクチン組成物。
項[13]
IL-23関連疾患が、乾癬、乾癬性関節炎、関節リウマチ、全身性エリテマトーデス、糖尿病(好ましくはI型糖尿病)、アテローム性動脈硬化症、炎症性腸疾患(IBD)/クローン病、多発性硬化症、ベーチェット病、強直性脊椎炎、フォークト・小柳・原田病、慢性肉芽腫症、化膿性汗腺炎、抗好中球細胞質抗体(ANCA)関連血管炎、神経変性疾患、アトピー性皮膚炎、移植片対宿主病およびがんからなる群から選択される、項[12]記載のワクチン組成物。
項[1A]
対象においてIL-23に対する抗体の産生を誘導する方法であって、有効量のT細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとの複合体を該対象に投与することを含み、該B細胞受容体抗原ペプチドが、以下の式(I):
X1-X2-X3-X4-X5-X6-X7-X8(I)
で表され、式中、
X1がS、A、G、T、KまたはRであり、
X2がP、A、G、S、T、KまたはRであり、
X3がS、A、G、T、KまたはRであり、
X4がQ、A、G、TまたはNであり、
X5がP、A、G、S、T、QまたはNであり、
X6がW、A、YまたはFであり、
X7がQ、A、G、TまたはNであり、
X8がR、A、GまたはKである、方法。
項[1B]
IL-23に対する抗体の産生誘導における使用のための、T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとの複合体であって、該B細胞受容体抗原ペプチドが、以下の式(I):
X1-X2-X3-X4-X5-X6-X7-X8(I)
で表され、式中、
X1がS、A、G、T、KまたはRであり、
X2がP、A、G、S、T、KまたはRであり、
X3がS、A、G、T、KまたはRであり、
X4がQ、A、G、TまたはNであり、
X5がP、A、G、S、T、QまたはNであり、
X6がW、A、YまたはFであり、
X7がQ、A、G、TまたはNであり、
X8がR、A、GまたはKである、複合体。
項[1C]
IL-23関連疾患の治療または予防用の医薬の製造における、T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとの複合体の使用であって、該B細胞受容体抗原ペプチドが、以下の式(I):
X1-X2-X3-X4-X5-X6-X7-X8(I)
で表され、式中、
X1がS、A、G、T、KまたはRであり、
X2がP、A、G、S、T、KまたはRであり、
X3がS、A、G、T、KまたはRであり、
X4がQ、A、G、TまたはNであり、
X5がP、A、G、S、T、QまたはNであり、
X6がW、A、YまたはFであり、
X7がQ、A、G、TまたはNであり、
X8がR、A、GまたはKである、使用。
項[14]
以下の式(I):
X1-X2-X3-X4-X5-X6-X7-X8(I)
で表され、式中、
X1がS、A、G、T、KまたはRであり、
X2がP、A、G、S、T、KまたはRであり、
X3がS、A、G、T、KまたはRであり、
X4がQ、A、G、TまたはNであり、
X5がP、A、G、S、T、QまたはNであり、
X6がW、A、YまたはFであり、
X7がQ、A、G、TまたはNであり、
X8がR、A、GまたはKである、B細胞受容体抗原ペプチド。
項[15]
前記式(I)中、X6がWである、項[14]記載のB細胞受容体抗原ペプチド。
項[16]
前記式(I)中、X7がQである、項[14]または[15]記載のB細胞受容体抗原ペプチド。
項[17]
前記式(I)中、X8がRである、項[14]~[16]のいずれか一項記載のB細胞受容体抗原ペプチド。
本発明は、T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとの複合体を含む、IL-23に対する抗体の産生を誘導し得る(従って、IL-23関連疾患を治療または予防するのに適した)ワクチン組成物(以下、「本発明のワクチン組成物」と称することがある)を提供する。
式(I):X1-X2-X3-X4-X5-X6-X7-X8
で示されるアミノ酸配列を含むペプチドであるか、または当該8アミノ酸からなるペプチドであって、
式中、
X1がS(セリン)、A(アラニン)、G(グリシン)、T(トレオニン)、K(リジン)またはR(アルギニン)であり、
X2がP(プロリン)、A(アラニン)、G(グリシン)、S(セリン)、T(トレオニン)、K(リジン)またはR(アルギニン)であり、
X3がS(セリン)、A(アラニン)、G(グリシン)、T(トレオニン)、K(リジン)またはR(アルギニン)であり、
X4がQ(グルタミン)、A(アラニン)、G(グリシン)、T(トレオニン)またはN(アスパラギン)であり、
X5がP(プロリン)、A(アラニン)、G(グリシン)、S(セリン)、T(トレオニン)、Q(グルタミン)またはN(アスパラギン)であり、
X6がW(トリプトファン)、A(アラニン)、Y(チロシン)またはF(フェニルアラニン)であり、
X7がQ(グルタミン)、A(アラニン)、G(グリシン)、T(トレオニン)またはN(アスパラギン)であり、
X8がR(アルギニン)、A(アラニン)、G(グリシン)またはK(リジン)であり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRまたはAであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり(但し、X2がSの場合、X5はP、AまたはQである)、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSであり、
X2がP、SまたはTであり、
X3がSであり、
X4がQであり、
X5がP、S、TまたはQであり(但し、X2がSの場合、X5はPまたはQである)、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSであり、
X2がP、A、SまたはTであり、
X3がSであり、
X4がQまたはAであり、
X5がPであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
本発明はまた、IL-23関連疾患に罹患する対象に本発明のワクチン組成物を投与することを含む、IL-23関連疾患を治療または予防するための方法(以下、「本発明の方法」と称することがある)を提供する。
本発明はまた、本発明のワクチン組成物に含まれるペプチド複合体の一部を構成するB細胞受容体抗原ペプチドそのもの(以下、「本発明のB細胞受容体抗原ペプチド」と称することがある)を提供する。
式(I):X1-X2-X3-X4-X5-X6-X7-X8
で示されるアミノ酸配列を含むペプチドであるか、または当該8アミノ酸からなるペプチドであって、
式中、
X1がS(セリン)、A(アラニン)、G(グリシン)、T(トレオニン)、K(リジン)またはR(アルギニン)であり、
X2がP(プロリン)、A(アラニン)、G(グリシン)、S(セリン)、T(トレオニン)、K(リジン)またはR(アルギニン)であり、
X3がS(セリン)、A(アラニン)、G(グリシン)、T(トレオニン)、K(リジン)またはR(アルギニン)であり、
X4がQ(グルタミン)、A(アラニン)、G(グリシン)、T(トレオニン)またはN(アスパラギン)であり、
X5がP(プロリン)、A(アラニン)、G(グリシン)、S(セリン)、T(トレオニン)、Q(グルタミン)またはN(アスパラギン)であり、
X6がW(トリプトファン)、A(アラニン)、Y(チロシン)またはF(フェニルアラニン)であり、
X7がQ(グルタミン)、A(アラニン)、G(グリシン)、T(トレオニン)またはN(アスパラギン)であり、
X8がR(アルギニン)、A(アラニン)、G(グリシン)またはK(リジン)であり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRまたはAであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQであり、
X5がP、A、S、TまたはQであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSまたはAであり、
X2がP、A、SまたはTであり、
X3がSまたはAであり、
X4がQまたはAであり、
X5がP、A、S、TまたはQであり(但し、X2がSの場合、X5はP、AまたはQである)、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSであり、
X2がP、SまたはTであり、
X3がSであり、
X4がQであり、
X5がP、S、TまたはQであり(但し、X2がSの場合、X5はPまたはQである)、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
X1がSであり、
X2がP、A、SまたはTであり、
X3がSであり、
X4がQまたはAであり、
X5がPであり、
X6がWまたはAであり、
X7がQまたはAであり、
X8がRであり得る。
第5版 実験化学講座16有機化合物の合成IV等に記載の方法に従い、全自動固相合成機を用いて、保護ペプチド樹脂をFmoc法で合成した。得られた保護ペプチド樹脂にトリフルオロ酢酸(TFA)とスカベンジャー(チオアニソール、2,2’-(エチレンジオキシ)ジエタンチオール、m-クレゾール、トリイソプロピルシラン、および、水等の混合物)を加えて、樹脂から切り出すとともに脱保護して、粗ペプチドを得た。この粗ペプチドを、逆相HPLCカラムを用いて、0.1%TFA-H20/CH3CNの系でグラジエント溶出し、精製を行った。目的物を含む画分を集め凍結乾燥して、目的のペプチドを得た。
合成したペプチドの純度をHPLC装置により以下の分析条件で測定した。
HPLC機種:島津製作所 LCLC-20ADXR
測定波長:220 nm
流量:毎分0.31 mL
カラム:Inertsil ODS-3,2.1m×250mm,5micron
カラム温度:室温
移動相A:0.1%トリフルオロ酢酸水溶液
移動相B:アセトニトリル
グラジエント条件:30分間で移動相Bの濃度を直線的勾配で5%から80%にする。(5→80% buffer B in 30min)
合成したペプチドの質量をMALDI-TOF-MSにより以下の分析条件で測定した。
MALDI-TOF-MS機種:Bruker autoflex speedマトリックス:2,5-Dihydroxybenzoic acid
溶解溶液:0.1%トリフルオロ酢酸水溶液とアセトニトリルの混合溶液
表1に示すマウスIL-23由来のエピトープペプチド(配列番号1~5、図1(a))をB細胞抗原として選択し、T細胞抗原AJP001(表2、配列番号38)とε-アミノカプロン酸(「Ahx」と称することがある)をスペーサーとし、コンジュゲートした複合体(AJP001コンジュゲートペプチド)を作製した(製造は株式会社ペプチド研究所に委託した)。なお、本明細書では、B細胞エピトープが配列番号「X」で表されるアミノ酸配列を有するAJP001コンジュゲートペプチドを、「AJP001コンジュゲートペプチド(配列番号X)」等と称することとする。
AJP001コンジュゲートペプチド(配列番号2)を生理食塩水に溶解し、1 mg/body、2週間隔で3回、BALB/cマウス(雌、6週齢、N=6)に皮内投与し、2週毎に8週まで採血した。回収した全ての血清について抗体価(GMT)を、6週の時点の血清についてrmIL-23への結合能を、ELISA法で測定した(実施例1と同方法)。各時点での抗体価および誘導された抗体のrmIL-23への結合を図2(a)および(b)にそれぞれ示した。
AJP001コンジュゲートペプチド(配列番号2)を生理食塩水に溶解し、1 mg/body、2週間隔で3回、ヘアレスラット(雌、6週齢、N=6)に皮内投与した。初回投与後6週の時点から、1日間隔で計4回、2%イミキモド(IMQ)を耳介に間歇塗布し、乾癬モデルを作製した。なお、対照群として、2%IMQ塗布群を設けた。薬効は、IMQ塗布初日から8日目までシックネスゲージ(thickness gauge、ミツトヨ)で耳介厚を測定することで評価した。また、8日目に耳介組織の病理組織学的評価を行った。具体的には、採取した耳介を10%中性ホルマリンで固定後、定法に従って標本を作製し、HE染色した。HE染色標本を顕微鏡で観察し、炎症細胞浸潤、浮腫、肥厚について、4段階(0:正常、1:軽度、2:中等度、3:重度)でスコア化し、スコア総和を算出した。また、6週の時点の血清について抗体価(GMT)をELISA法で測定した(実施例1と同方法。2次抗体はanti-Rat IgG(GEヘルスケア)を使用した)。AJP001コンジュゲートペプチド(配列番号2)の抗体価、耳介厚および組織学的検査の結果を図3に示す。なお、図3中、「*」は、「2% IMQ」と比較して、有意である(P<0.05)ことを意味する。「♯」は、(b)においては「Day 0」、(d)においては「Normal(正常群)」と比較して、有意である(P<0.05)ことを意味する。
AJP001コンジュゲートペプチド(配列番号2)を生理食塩水に溶解し、1 mg/body、2週間隔で、BALB/cマウス(雌、6週齢、N=8)に3回皮内投与した。初回投与後6週の時点でrmIL-23を耳介皮内投与し、炎症を誘発させた。rmIL-23の初回投与日をDay 0とし、Day 2、4、および7の計4回投与した。なお、対照群として、ペプチドを投与しないrmIL-23群を設けた。rmIL-23の各投与日およびDay 9にシックネスゲージで耳介厚を測定した。また、耳介中のIL-17A、IL-22、IL-1β、LCN-2、およびCXCL-2のmRNA発現を測定するため、同条件でrmIL-23投与3日目の時点で耳介を採取した。なお、mRNA評価のため、rmIL-23を投与しない正常群を設定した。採取した耳介は、液体窒素下で凍結粉砕後、RNeasy Fibrous Tissue Kit(Qiagen)を使用して、Total RNAを抽出し、次いで、High-Capacity cDNA Reverse Transcription Kit(Applied Biomedical Inc)を用いて、抽出したRNAのcDNAを調製した。TaqMan Gene Expression Assays (S18: Mm02601777_g1; CXCL-2: Mm00436450_m1; IL-17A: Mm00439618_m1; IL-22: Mm01226722_m1; IL-1β: Mm00434228_m1; LCN-2: Mm01324470_m1)を使用し、Applied Biosystems 7900HT Fast Real Time PCR System でCt値を計測した。mRNA発現量は、ΔΔCt法で算出し、正常群に対する相対値で評価した。AJP001コンジュゲートペプチド(配列番号2)の耳介厚およびmRNA発現に対する薬効評価の結果を図4に示す。なお、図4中、「*」は、「rmIL-23」と比較して、有意である(P<0.05)ことを意味する。「#」は、(a)においては「Day 0」と比較して、(b)においては「Normal(正常群)」と比較して、有意である(P<0.05)ことを意味する。
表1に示すヒトIL-23由来のエピトープ候補ペプチド(配列番号6~37)をB細胞抗原として選択し、T細胞抗原AJP001(表2、配列番号38)とε-アミノカプロン酸をスペーサーとし、コンジュゲートした複合体(AJP001コンジュゲートペプチド)を合成した(合成は株式会社東レリサーチセンターに委託した)。
AJP001コンジュゲートペプチド(配列番号6)を生理食塩水に溶解し、1 mg/body、2週間隔でBALB/cマウス(雌、6週齢、N=6)に3回皮内投与し、2週毎に8週まで採血した。回収した全ての血清について抗体価(GMT)を、6週の血清についてはrhIL-23への結合能を、ELISA法で測定した。AJP001コンジュゲートペプチド(配列番号6)の抗体価およびrhIL-23への結合の結果を図5(a)および(b)に示す。なお、図5中「*」はP<0.05を意味する。
AJP001コンジュゲートペプチド(配列番号6)を生理食塩水に溶解し、1 mg/body、2週間隔でBALB/cマウス(雌、6週齢、N=8)に3回投与した。初回投与後6週の時点でrhIL-23を耳介皮内に投与し、炎症を誘発させた。rhIL-23は、毎日計4回投与した。なお、対照群として、AJP001コンジュゲートペプチドを投与しないrhIL-23群を設けた。rhIL-23投与後3日および4日の時点でシックネスゲージを用いて耳介厚を測定した。また、耳介中のIL-17A、IL-22、IL-1β、LCN-2およびCXCL-2のmRNA発現を測定した。耳介厚およびmRNA発現に対するAJP001コンジュゲートペプチド(配列番号6)の薬効評価の結果を図6に示す。なお、図6中、「*」は、「rhIL-23」と比較して、有意である(P<0.05)ことを意味する。「#」は、「Normal(正常群)」と比較して、有意である(P<0.05)ことを意味する。
AJP001コンジュゲートペプチド(配列番号6)を生理食塩水に溶解し、5 mg/body、2週間隔でカニクイザル(雌、4-5歳、N=4)に3回皮下投与した。投与初日から2週毎に16週まで採血し、各時点の血清について抗体価(GMT)およびIL-23への結合をELISA法で測定した(実施例1と同方法。2次抗体はAnti-Monkey IgG(アブカム)を使用した)。結果を図7に示す。なお、図7中「*」はP<0.05を意味する。
AJP001コンジュゲートペプチド(配列番号2)を生理食塩水に溶解し、1 mg/mLのType-B/K CpG―ODN K3(株式会社ジーンデザイン、以下「CpG」と記載することがある)と等量混合し、1 mg/body、2週間隔で、BALB/cマウス(雌、6週齢、N=10)に3回皮下投与した。初回投与後6週の時点で30%エタノールに溶解したTNBSを2 mg/bodyで注腸した。TNBSの初回投与日をDay 0とし、Day 7にTNBSを3 mg/bodyで注腸し、大腸炎を誘発した。なお、TNBSを投与しないNormal群および30%EtOH群、TNBSを投与するがペプチドを投与しないSaline/TNBS群およびアジュバントのみを投与したCpG/TNBS群を設けた。TNBS投与日を含め、Day 1、2、3、4、7、8、9及び10に体重を測定した。Day10に深麻酔下で心臓採血による安楽死後、得られた血清について抗体価(GMT)およびmIL―23への結合をELISA法で測定した(実施例1と同方法)。また、大腸組織を採取し、大腸の長さ(cm)を測定後、肛門から2cm部分についてサイトカインmRNA発現の測定、2から4cm部分については病理組織学的検査を実施した。サイトカインのmRNA発現は、氷冷下でビーズ破砕後、RNeasy Fibrous Tissue Kit(Qiagen)を使用して、Total RNAを抽出し、次いで、High-Capacity cDNA Reverse Transcription Kit(Applied Biomedical Inc)を用いて、抽出したRNAのcDNAを調製した。TaqMan Gene Expression Assays(GAPDH:Mm99999915_g1;IL-17A:Mm00439618_m1;IL-17F:Mm00521423_m1;IL-22:Mm01226722_m1;IL-23:Mm00518984_m1;IL-1β:Mm00434228_m1)を使用し、Applied Biosystems 7900HT Fast Real Time PCR SystemでCt値を計測した。mRNA発現量は、ΔΔCt法で算出し、正常群に対する相対値で評価した。病理組織学的検査は、採取した大腸を10%中性ホルマリンで固定後、定法に従って標本を作製し、HE染色した。HE染色標本を顕微鏡で観察し、炎症細胞浸潤(Grade:0-3)、大腸組織障害深度(Grade:0-3)及び大腸粘膜障害範囲(Grade:0-4)でスコア化し、スコア総和を算出した。
Claims (11)
- T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとの複合体を含む、IL-23に対する抗体の産生を誘導し得るワクチン組成物であって、該B細胞受容体抗原ペプチドが、以下の式(I):
X1-X2-X3-X4-X5-X6-X7-X8(I)
で表され、式中、
X1がS、A、G、T、KまたはRであり、
X2がP、A、G、S、T、KまたはRであり、
X3がS、A、G、T、KまたはRであり、
X4がQ、A、G、TまたはNであり、
X5がP、A、G、S、T、QまたはNであり、
X6がW、A、YまたはFであり、
X7がQ、A、G、TまたはNであり、
X8がR、A、GまたはKである、ワクチン組成物。 - 前記B細胞受容体抗原ペプチドにおいてX6がWである、請求項1記載のワクチン組成物。
- 前記B細胞受容体抗原ペプチドにおいてX7がQである、請求項1または2記載のワクチン組成物。
- 前記B細胞受容体抗原ペプチドにおいてX8がRである、請求項1~3のいずれか一項記載のワクチン組成物。
- B細胞受容体抗原ペプチドが、配列番号2、6~14および17~26のいずれかで表されるアミノ酸配列を含む、請求項1~4のいずれか一項記載のワクチン組成物。
- T細胞受容体抗原ペプチドが配列番号38で表されるアミノ酸配列を含む、請求項1~5のいずれか一項記載のワクチン組成物。
- 複合体が、T細胞受容体抗原ペプチドのC末端とB細胞受容体抗原ペプチドのN末端との間で結合している、請求項1~6のいずれか一項記載のワクチン組成物。
- T細胞受容体抗原ペプチドとB細胞受容体抗原ペプチドとがリンカーを介して結合されている、請求項1~7のいずれか一項記載のワクチン組成物。
- アジュバントとしての添加物を含有しない、請求項1~8のいずれか一項記載のワクチン組成物。
- IL-23関連疾患の治療または予防のための、請求項1~9のいずれか一項記載のワクチン組成物。
- IL-23関連疾患が、乾癬、乾癬性関節炎、関節リウマチ、全身性エリテマトーデス、糖尿病(好ましくはI型糖尿病)、アテローム性動脈硬化症、炎症性腸疾患(IBD)/クローン病、多発性硬化症、ベーチェット病、強直性脊椎炎、フォークト・小柳・原田病、慢性肉芽腫症、化膿性汗腺炎、抗好中球細胞質抗体(ANCA)関連血管炎、神経変性疾患、アトピー性皮膚炎、移植片対宿主病およびがんからなる群から選択される、請求項10記載のワクチン組成物。
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