WO2004092373A1 - Htlv-i特異的ctl誘導活性ペプチド - Google Patents
Htlv-i特異的ctl誘導活性ペプチド Download PDFInfo
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- WO2004092373A1 WO2004092373A1 PCT/JP2004/005414 JP2004005414W WO2004092373A1 WO 2004092373 A1 WO2004092373 A1 WO 2004092373A1 JP 2004005414 W JP2004005414 W JP 2004005414W WO 2004092373 A1 WO2004092373 A1 WO 2004092373A1
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- WIPO (PCT)
- Prior art keywords
- htlv
- peptide
- specific ctl
- inducing
- hla
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Classifications
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- C—CHEMISTRY; METALLURGY
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- C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/02—Antineoplastic agents specific for leukemia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/04—Antineoplastic agents specific for metastasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/14011—Deltaretrovirus, e.g. bovine leukeamia virus
- C12N2740/14022—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
Definitions
- the present invention relates to an HTL capable of inducing cytotoxic T cells (CTLs) having an antitumor effect on human T cell leukemia virus type I (HTLV-I) tumor such as adult T cell leukemia (ATL).
- CTLs cytotoxic T cells
- HTLV-I human T cell leukemia virus type I
- ATL adult T cell leukemia
- the present invention relates to a VI-specific CTL-inducing peptide, a DNA encoding the peptide, a vaccine for inducing an immune response using the peptide, a diagnostic agent for testing an immune function, and the like.
- ATL is a T-cell malignancy that affects approximately 5% of human T-cell leukemia virus type I (HTLV-I) -infected individuals and is mainly CD4 + and CD25 + mature It is characterized by a T lymphocyte phenotype, middle-aged or later onset, immunosuppression, and poor prognosis (eg, Int. J. Cancer 45, 237-243, 1990; Blood 50, 481- Natl. Acad. Sci. USA 78, 6476-6480, 1981.). Although the clinical use of ATL with chemotherapy has increased the 4-year survival rate to 8 to 12%, it is still low compared to other types of leukemia (eg, J. Clin.
- HSCT hematopoietic stem cell transplantation
- Allogeneic HSCT received from siblings that human leukocyte antigen (HLA) has killed has been shown to cause some GVHD, and the recipient's minor tissue-matched antigen (mHA) has been considered a target antigen for GVHD.
- HLA human leukocyte antigen
- mHA minor tissue-matched antigen
- Male-specific H—Y transplantation antigen see, for example, Science 269, 1588-1590, 1995
- HA-1 antigen see, for example, Science 279, 1054-1057, 1998.
- CD31 molecule See, for example, N. Engl. J. Med. 334, 286-291, 1996, Br. J.
- HPA human platelet antigen
- Tumor antigens such as bcr / ab1 fusion proteins and WT_1 that are tumor cell-specific or overexpressed in tumor cells, are also candidates for targets of GVL effects (eg, Blood 95, 1781-1787, 2000; Blood 96, 1480-1489, 2000.).
- GVL effects eg, Blood 95, 1781-1787, 2000; Blood 96, 1480-1489, 2000.
- Host cell-mediated immune response to HTL V-I especially the proliferation of cytotoxic T cells, is associated with asymptomatic HL TV-1 carrier and HTL V-I-associated myelopathy Tropical spastic paraplegia
- HAM / TSP is frequently found in PBMC cultures of patients, but is rarely found in ATL patients (e.g., Leukemia 8 Suppl 1, S54-59, 1994, J. Immunol. 133, 1037-1041, 1984.;).
- HTL V-I antigens such as the env, gag, and pop X gene products
- the pX gene product Ta ⁇ is the dominant target antigen for HTL V-I-specific cytotoxic lymphocytes (CTLs).
- CTLs cytotoxic lymphocytes
- Tax is also known to play an important role in HTLV-I leukemia by promoting cell growth and suppressing apoptosis (e.g., Lancet 1, 1085-1086, 1987). J. Virol. 73, 7981-7987, 1999.). These findings suggest that Tax-specific CTLs may play a role in immunosurveillance of leukemia in HTL V-I infected cells ( we have previously been restricted to human HLA-A2). HLA-A2 is positive only in 30 to 40% of the Japanese population, although major epitopes of CTLs have already been found (see, for example, J. Virol. 66, 2928-2933, 1992).
- Tax is By transplanting fresh T cells from syngeneic immunized rats vaccinated with either the encoding DNA or the peptide corresponding to the CTL epitope, Untreated fatal T cells in nude rats inoculated with syngeneic HTLV-I infected cells Empamas could be cured (see, for example, J.
- ATL is a neoplastic disease caused by HTLV-I infection, which has a high prevalence in Japan, but has been regarded as an extremely poor prognostic malignant tumor due to resistance to chemotherapeutic drugs .
- HTLV-ITax a major target antigen of CTL, has a tumorigenic function I know that there is. Therefore, for the development of more specific and safe vaccines, it is necessary to identify CTL recognition epitopes. However, no CTL epitope with an antitumor effect in human ATL patients was identified.
- An object of the present invention is to provide an HTLV-I-specific CTL-inducing activity peptide capable of inducing CTL having an antitumor effect against HTLV-I tumors such as ATL, and encoding the peptide.
- An object of the present invention is to provide DNA, a vaccine for inducing an immune response using the same, and a diagnostic reagent for testing antitumor immunity.
- the present invention relates to an HTLV-I-specific CTL-inducing peptide having the amino acid sequence represented by SEQ ID NO: 3 or 4 (Claim 1); HTLV-I-specific CTL-inducing active peptide comprising an amino acid sequence in which two amino acids have been deleted, substituted or added (Claim 2), or HTLV-I-specific CTL-inducing active peptide according to Claim 1 or 2 And a fusion protein in which a marker protein and / or a peptide tag are bound (Claim 3), or the HLA-A24 and the HTLV-I-specific CTL-inducing active peptide according to Claim 1 or 2 And a protein peptide conjugate wherein HLA-A24 and the HTLV-I-specific CTL-inducing active peptide according to claim 1 or 2 are bound.
- Tetramer (claim 5) or claim 4
- the present invention relates to a DNA that hybridizes with the described DNA under stringent conditions and encodes an HTLV-I-specific CTL-inducing activity peptide (Claim 9).
- the present invention relates to an HLA-A24-restricted TaX epitope comprising an HTLV-I-specific CTL-inducing activity peptide having the amino acid sequence shown in SEQ ID NO: 4 (claim 10);
- a vaccine for inducing an immune response (claim 11) containing, as an active ingredient, an HTLV-I-specific CTL-inducing peptide consisting of the amino acid sequence represented by 3 or 4;
- An antibody for inducing an immune response comprising, as an active ingredient, an HTLV-I-specific CTL-inducing activity peptide comprising an amino acid sequence in which one or several amino acids have been deleted, substituted or added in the amino acid sequence (claim 1).
- the vaccine for inducing an immune response according to any one of claims 8 to 10 (claim 14), and the immune response for inducing an immune response according to any one of claims 11 to 14 which comprises an adjuvant containing A pharmaceutical composition containing a vaccine as an active ingredient (Claim 15) or an immune function test containing an HTLV-I-specific CTL-inducing activity peptide consisting of the amino acid sequence shown in SEQ ID NO: 3 or 4 as an active ingredient HTLV-I specific comprising a diagnostic agent (claim 16) or an amino acid sequence in which one or several amino acids are deleted, substituted or added in the amino acid sequence shown in SEQ ID NO: 3 or 4.
- the present invention relates to a diagnostic agent for immunological function test (claim 17) containing a CTL-inducing active peptide as an active ingredient. - Furthermore, the present invention provides a diagnostic agent for immunological function test comprising a vector capable of expressing the DNA according to any one of claims 7 to 9 as an active ingredient (claim 18), and HLA-A24.
- An immunological function test / diagnostic agent comprising a protein peptide conjugate bound to the HTLV-I-specific CTL-inducing activity peptide according to claim 1 or 2 as an active ingredient (claim 19), and HLA-A
- An immunological function test diagnostic agent comprising as an active ingredient a tetramer of a protein peptide conjugate in which 24 and HTLV-I-specific CTL-inducing active peptide according to claim 1 or 2 are bound (claim 2 0) or an HTLV-I tumor diagnostic agent comprising the DNA of any one of claims 7 to 9 as an active ingredient (claim 21), and an HTLV-I according to claim 1 or 2
- An antibody (Claim 22) that specifically binds to a specific CTL-inducing peptide or a monoclonal antibody 22.
- the antibody according to claim 22 (claim 23), which is a human body, or an antibody that specifically binds to the HTLV-I-specific CTL inducing peptide according to claim 22 or 23 as an active ingredient.
- HTLV-I tumor diagnostic agent (Claim 24) or an expression vector capable of expressing the HTLV-I-specific CTL-inducing activity peptide of Claim 1 or 2 (Claim 2) 5), a host cell comprising an expression system capable of expressing the HTL V-I-specific CTL inducing peptide according to claim 1 or 2 (claim 26), and HLAA24.
- An expression vector capable of expressing a conjugate with the HTLV-I-specific CTL-inducing active peptide according to claim 1 or 2, or HLA-A24 and the HLA-A24 according to claim 1 or 2.
- a host cell containing an expression system capable of expressing a conjugate with an HTL V-I-specific CTL inducing activity peptide (Claim 28), or an AT cell before HSCT HTL V-I-recognizing C TL characterized by stimulating P BMC of the same patient after HS CT derived from allogeneic HLA-type donor using HT LV-I infected T cells from L patients
- Method of claim (claim 29) and claim 1 or 2 A method for inducing HTL V-I-recognizing CTL, comprising stimulating P BMC of HLA_A24-positive ATL patient using an HTL V-I-specific CTL inducing activity peptide (claim 30) HTLV-I recognition, characterized by stimulating PBMC of an HLA-A24-positive ATL patient using
- HTL V-I-specific CTL is rarely induced from ATL patients, but CTL for the epitope identified according to the present invention was selectively induced from ATL cases that entered complete remission after stem cell transplantation. This means that the epitope was strongly expressed in the patient's body, indicating that the present epitope is useful as a vaccine antigen.
- FIG. 1 is a photograph showing CTL induction on ILT_ # 37 cells in PBMC of patients # 37 (FIG. 1a) and donor # 36 (FIG. Lb) after HSCT.
- Various numbers of PBMC were cultured for 19 days, during which the first and 10 days were stimulated twice with formalin-immobilized ILT— # 3.7.
- FIG. 4 is a view showing the result of measuring the amount of IFN-r in the supernatant by ELISA analysis. Values represent the average of two experiments.
- FIG. 2 is a photograph showing the TaX specificity of HTLV_I of CTL induced from patient # 37 after HSCT and the restriction of MHC class I.
- the target cells used were ILT-I # 37 ( ⁇ ), LCL— # 36 ( ⁇ ), and PHA-activated P BMC (X), HL A- For TCL _ K an ( ⁇ ) and LCL—K an ( ⁇ ) where A 2 and B 46 match, and for ILT-A s -2 ( ⁇ ) and LCL-A s ( ⁇ ) that HLA does not match there were.
- Black symbols represent HTLV-I infected cells, white symbols represent EBV infected cells. Values represent the average of the cytotoxicity (Specific Lys is) of three experiments.
- HTLV shows inhibition of ILT- # 37 specific cytotoxicity by competing cells expressing I Tax.
- PBMC culture of patient # 37 after HS CT was stimulated with formalin-fixed ILT- # 37 cells 5 times in advance, and effector cells vs. target cells against radiolabeled ILT- # 37
- the 51 Cr release analysis was performed with the ratio of 30 to 1.
- unlabeled LCL infected with rVV expressing the HTL V-I pX gene product was infected with # L6 cells (LCL- # 36 / p27X) or control rvv.
- the test was performed in the presence of unlabeled LCL- # 36 cells (LCL- # 36ZHA) or ILT- # 37 cells, and the ratio of competitor cells to target cells was 30: 1.
- FIG. 4 presents photographs showing the results of the mapping of the HLA-A2-restricted tax epitope of HTLV-I recognized by L.
- FIG. LCL- # 36 cells were pulse-labeled with 3 types of 9- to 24-base-length synthetic oligopeptides corresponding to the 10 mM T aX amino acid sequence, and compared to CTL of patient # 37 after HSCT. The respective sensitivities were determined using a 51 Cr release assay with a ratio of effector to target cells of 10. Values are the mean of the cytotoxicity of three experiments.
- Fig. 4 shows the cytotoxicity induced by stimulation of ILT- # 37 cells in PBMC culture solution of patient # 37 before HSCT, patient # 37 after HSCT and donor # 36. 4 is a photograph showing a result of a feature.
- the ratio of effector cells to target cells was 30 and the cells were stimulated twice and cultured for 40 days.
- the cytotoxicity of PBMC of patient # 37 before HSCT, and cultured for 3 days with stimulation 3 times The cytotoxicity of PBMC in patients # 37 and donor # 36 after HSCT was measured.
- the cytotoxicity against ILT- # 37 (black frame), the cytotoxicity against TLC-Kan (shaded frame), and the cytotoxicity against LCL-Kan (white frame) are shown, respectively. Values are the average of three experiments.
- Figure 5 shows the CT derived from 113 (Patient 1 ⁇ 07 (Case.2)).
- 3 is a photograph showing the results of mating of the HLA-A24-restricted Tax epitope of HTLV-I recognized by L.
- CD8 + cell-rich PBMC were stimulated three times with formalin-fixed ILT-R07 cells, cultured for 32 days, and HL pulse-labeled with a series of 33 synthetic oligopeptides of T aX.
- the A—A 24 + EBV-transformed B cell line, TOK was mixed with the effector to target at a ratio of 8 and incubated for 18 hours. After that, IFN- ⁇ in the supernatant was measured by ELISA analysis. Values are the average of two experiments.
- Figure 6 shows the tetramer-bound CD8 of HLA-A * 2402 / Tax301-309 in CTL derived from patient R07 (Case 2) after HS CT.
- 4 is a photograph showing a flow cytometry analysis result of + T cells. .
- Culture of patient R07 after HS CT PBMC of 67 days were used.
- the numbers in the upper right indicate the percentage of PBMC bound to the tetramer, a phenomenon in a total of 100,000 cells.
- the HTLV-I-specific CTL-inducing peptide of the present invention that is, a peptide capable of inducing CTL having an antitumor effect specifically against HTLV-I tumor, is represented by SEQ ID NO: 3 or 4.
- the peptide is not particularly limited as long as it has a specific CTL inducing activity (hereinafter, a peptide comprising the amino acid sequence shown in SEQ ID NO: 3 or 4 and one or more amino acids in these amino acid sequences) are sometimes referred to as “the peptides” in combination with peptides modified by substitution, deletion or addition.)
- the degree of “substitution, deletion or addition” of amino acids and their positions, etc. are determined in such a manner that the modified peptide is HTLV-I-specific similarly to the peptide comprising the amino acid sequence shown in SEQ ID NO: 3 or 4.
- amino acid sequence is not particularly limited as long as it has the same CTL-inducing activity.
- Amino acid sequence alteration may be caused by, for example, mutation or post-translational modification, but can also be artificially altered.
- all modified peptides having the above-mentioned properties are included irrespective of the cause and means of such modified mutation.
- the present peptides of the present invention can be produced by chemical or genetic engineering techniques.
- Chemical methods include the usual liquid-phase and solid-phase methods for peptide synthesis. More specifically, the peptide synthesis method is based on amino acid sequence information, in which a stepwise erosion method in which each amino acid is sequentially linked one by one to extend the chain, and a fragment consisting of several amino acids are previously synthesized. And then subjecting each fragment to a coupling reaction.
- the peptide having the amino acid sequence shown in SEQ ID NO: 3 of the present invention can be synthesized by any of them.
- the condensation method employed for the above-mentioned peptide synthesis can also be in accordance with various known methods. Specific examples thereof include azide method, mixed acid anhydride method, DCC method, active ester method, oxidation-reduction method, DPPA (diphenylphosphoryl azide) method, DCC + additive (1-hydroxybenzotriazole, N- Hydroxysuccinamide, N-hydroxy-5-norpolene-2,3-dicarboxyimide and the like, and the Wood method.
- the solvent that can be used in each of these methods can also be appropriately selected from general solvents that are well known to be used in this type of peptide condensation reaction. Examples include dimethylformamide (DMF) and dimethylsulfoxy. (DMS ⁇ ), hexaphosphoramide, dioxane, tetrahydrofuran (THF), ethyl acetate and the like, and a mixed solvent thereof.
- the hydroxyl group in amino acids and peptides not involved in the reaction is generally esterified to form a lower alkyl ester such as methyl ester, ethyl ester and tertiary butyl ester, for example, benzyl ester, It can be protected as p-methoxybenzyl ester, p-nitrobenzyl ester, aralkyl ester and the like.
- an amino acid having a functional group in a side chain for example, a hydroxyl group of Tyr may be protected with an acetyl group, a benzyl group, a benzyloxycarbonyl group, a tertiary butyl group or the like, but such protection is not always required.
- the guanidino group of Arg includes a nitro group, a tosyl group, a 2-methoxybenzenesulfonyl group, a methylene-12-sulfonyl group, a benzyloxycarbonyl group, an isoporonyloxycarbonyl group, and an adamantyloxy group.
- a suitable protecting group such as a luponyl group.
- the deprotection reaction of these protecting groups in the amino acids and peptides having the above protecting groups and the finally obtained peptides of the present invention can also be carried out by a conventional method, for example, a catalytic reduction method, liquid ammonia / sodium, and fluorine. It can be carried out according to a method using hydrogen chloride, hydrogen bromide, hydrogen chloride, trifluoroacetic acid, acetic acid, formic acid, methanesulfonic acid or the like.
- the present peptides of the present invention can be obtained by chemical synthesis as described above, or can be produced by a conventional method using a genetic engineering technique. Obtained in this way
- the peptides of the present invention can be prepared according to conventional methods, for example, ion-exchange resin, partition chromatography, gel chromatography, affinity chromatography, high performance liquid chromatography (HPLC), Purification can be performed appropriately according to a method widely used in the field of peptide chemistry such as a flow distribution method.
- any fusion protein may be used as long as the present peptide is linked to a marker protein and Z or a peptide tag, and conventionally known marker proteins.
- the protein is not particularly limited as long as it is a protein, and specific examples thereof include alkaline phosphatase, the Fc region of an antibody, HRP, GFP, and the like.
- Specific examples include conventionally known peptide tags such as epitope tags such as FLAG, Myc and the like, and affinity tags such as GST, maltose binding protein, biotinylated peptide and oligohistidine.
- Such fusion peptides can be prepared by a conventional method, and can be used to purify the peptides using the affinity of Ni-NTA and His tags, to detect the peptides, and to use the peptides It is also useful for the quantification of antibodies against and for other research reagents in this field.
- the protein peptide conjugate of the present invention is not particularly limited as long as it is a conjugate of HLA-A24 and the present peptide.
- it is shown in SEQ ID NO: 4 with HLA-A24 molecule
- Preferred is a form that can bind to CTL that recognizes such a conjugate, such as a conjugate with a peptide consisting of an amino acid sequence.
- the tetramer of the protein peptide conjugate of the present invention is not particularly limited as long as it is a tetramer of a protein conjugate in which HLA-A24 and the present peptide are bound.
- the above-mentioned evening peptide conjugate may be a tetramer with streptavidin as a nucleus.
- a substrate for the enzyme Bir-A may be added to the C-terminal of HLA-A24. Bir-A-dependent
- the HLA-A24 ⁇ domain and / 3--2 microglobulin prepared by a conventional method using a genetic engineering technique utilizing the gene (accession number NM-004) were reconstituted.
- a folding buffer Gibboczi et al. Proc. Natl. Acad. Sci. USA., 89: 3429-3433, 1992
- the fusion protein of the present invention may be any fusion protein in which a tetramer of the protein-peptide conjugate or the protein conjugate is linked to a marker protein and a Z or peptide tag.
- the marker protein is not particularly limited as long as it is a conventionally known marker protein, and specific examples thereof include a fluorescent dye, alkaline phosphatase, the Fc region of an antibody, HRP, and GFP.
- Conventionally known peptide tags include peptide tags such as HA, FLAG, Myc, and the like, and affinity tags such as GST, maltose-binding protein, biotinylated peptides, and oligohistidine. Specific examples of the peptide group can be given.
- Such fusion proteins can be prepared by a conventional method, such as purification of protein peptide conjugates using affinity of Ni—NTA and His tags, detection of CTL, and other methods. It is also useful as a research reagent in this field.
- antibodies specifically binding to the present peptides of the present invention include immunospecific antibodies such as monoclonal antibodies, polyclonal antibodies, chimeric antibodies, single-chain antibodies, and humanized antibodies. These can be prepared by a conventional method using the above-mentioned peptides as antigens, and among them, monoclonal antibodies are more preferable in view of their specificity.
- Antibodies that specifically bind to the present peptides, such as the monoclonal antibodies are useful not only for the diagnosis of HTLV-I tumors such as ATL, but also for the HTLV-I specificity of the present peptides. It is useful for elucidating the active and molecular mechanisms of CTL induction.
- Antibodies against the peptide of the present invention can be prepared in an animal (preferably, other than human) by using a conventional protocol to the peptide of the present invention, a complex of the peptide with an immunogenic protein, the peptide of the present invention.
- the antibody is produced by administering cells or the like presenting on the membrane surface.
- the hybridoma method (Nature 256, 495), which provides an antibody produced by a continuous cell line culture, is used.
- Trioma method Trioma method, Human B cell hybridoma method (Immunology Today 4, 72, 1983), and E BV-MONOCLONAL ANTIBODIES AND CANCER THERAPY, pp.77-96, Alan R.Liss, Inc., 1985) can be used.
- Examples of the DNA of the present invention include DNA encoding the above-mentioned peptides, DNA comprising the base sequence shown in SEQ ID NO: 7 or 8, or a sequence complementary thereto, and the base shown in SEQ ID NO: 7 or 8.
- the DNA is not particularly limited as long as it is a DNA that hybridizes under stringent conditions with the DNA comprising the sequence or its complementary sequence and encodes an HTLV-I-specific CTL-inducing peptide.
- DNAs are sometimes collectively referred to as the “DNA group”. ).
- Examples of the conditions for ⁇ hybridizing under stringent conditions '' include, for example, hybridization at 42 ° C., and 1 ⁇ SSC at 42 ° C. in a buffer containing 0.1% SDS. Washing treatment may be mentioned, and more preferably washing at 65 ° C with a hybridization solution at 65 ° C and a buffer containing 0.1 XSSC and 0.1% SDS. Wear.
- the factors affecting the stringency of the hybridization include various factors other than the above-mentioned temperature conditions, and those skilled in the art will combine the various factors into the above-described hybridisation method. It is possible to achieve the same stringency as that of the session.
- DNA groups of the present invention can be advantageously used when the peptides of the present invention are prepared by a conventional method using genetic engineering techniques.
- the antisense strand of the DNA groups of the present invention includes ATL and the like.
- HTLV-I is useful as a diagnostic probe for tumors.
- an HTL V-I-specific CTL induction having an amino acid sequence represented by SEQ ID NO: 4 capable of inducing CTL at in vivo opening
- the present peptides including the HLA-A2-restricted TaX epitope, and the vectors capable of expressing the present DNA group are used for the induction of the immune response of the present invention such as cell-mediated immunity and humoral immunity. It can be used as an active ingredient in vaccines.
- the vaccine for inducing an immune response according to the present invention can be used for treating HTL V-1 I tumors such as ATL.
- the vaccine for inducing an immune response of the present invention those containing various adjuvants for enhancing cellular or local immunity are more preferable, and such adjuvants include, for example, efficient peptide-specific What
- an adjuvant When used, it is used as a recombinant fusion protein or a recombinant fusion peptide prepared from DNA that continuously encodes various bacterial cell components, toxins, and the like serving as an adjuvant and the present peptides of the present invention. You can also.
- the pharmaceutical composition of the present invention containing the vaccine for inducing an immune response of the present invention as an active ingredient may contain a pharmaceutically acceptable carrier or diluent, an immunostimulant, an additive, and the like.
- a pharmaceutically acceptable carrier or diluent include, for example, stabilizers such as SPGA, carbohydrates such as sorbitol, mannitol, starch, sucrose, glucose, dextran, and proteins such as albumin and casein; Specific examples thereof include protein-containing substances such as skim milk, and buffers such as phosphate buffer, physiological saline, and water.
- the immunostimulant examples include cytokines such as interleukin-12 (IL-2), interleukin-12 (IL-12), and tumor necrosis factor ⁇ (THF-a).
- Additives include low molecular weight polypeptides (less than about 10 residues), proteins, amino acids, carbohydrates including glucose or dextran, chelating agents such as EDTA, protein stabilizers, microbial growth inhibitors or inhibitors, etc.
- the present invention is not limited thereto.
- the pharmaceutical composition of the present invention is preferably in a form that can be administered orally, intravenously, intraperitoneally, intranasally, intradermally, subcutaneously, intramuscularly, or the like. Throw
- the effective amount to be given can be appropriately determined in consideration of the type and composition of the drug or pharmaceutical composition, the administration method, the age and weight of the patient, etc., and these are administered one to several times a day. Is preferred.
- oral administration it is usually administered in the form of a preparation prepared by mixing with a pharmaceutical carrier.
- a carrier that can be used for the preparation a substance that is commonly used in the field of preparation and that does not react with the peptide of the present invention is used.
- dosage forms include tablets, capsules, granules, powders, syrups, suspensions, suppositories, ointments, creams, gels, patches, inhalants, injections, etc.
- preparations can be prepared according to a conventional method, and in particular, for liquid preparations, they can be dissolved or suspended in water or other appropriate medium at the time of use. Tablets and granules may be coated by a known method.
- the peptide of the present invention is prepared by dissolving the peptide in water, but may be dissolved in a physiological saline solution or a glucose solution, if necessary, or by adding a buffer or a preservative. You may. These formulations may also contain other components of therapeutic value.
- the peptides of the present invention can be used as food materials for preventing HTLV-I infection and improving symptoms of Z or HTLV-I related diseases, such as baked confectionery such as pudding, cooky, bread, cake, jelly, and rice crackers, and yokan.
- Confectionery such as Japanese sweets, frozen desserts, chewing gum, etc.
- fishery products such as udon, buckwheat, fish paste products such as kamaboko, ham, fish sausage, yogurt, drink yogurt, juice, milk, soy milk, alcoholic beverages
- Various drinks such as coffee, black tea, sencha, oolong tea, sports drinks, seasonings such as miso, soy sauce, dressing, mayonnaise, sweeteners, tofu, konjac, other tsukudani, gyoza, croquettes, salads, etc. It can be added to various kinds of side dishes and ingested as a functional food.
- the diagnostic agent for the immunological function test of the present invention includes the present peptides, the present DNA A vector capable of expressing a group, a protein peptide conjugate in which HLA-A24 and the present peptide are bound, or a tetramer of the protein peptide conjugate as an active ingredient, and an immune function, particularly There is no particular limitation as long as the immune function against HTLV-I can be tested and diagnosed.However, in general, it is possible to express the present DNA group in which the labeled product of the present peptide or the expression product is a labeled product.
- a vector a label of a protein peptide conjugate in which HLA-A24 and the present peptide are bound, or a label of a tetramer of the protein peptide conjugate.
- a labeling substance used for making a label a radioisotope can be used in addition to the above marker protein and peptide tag.
- the immunological function test diagnostic agent of the present invention is brought into contact with peripheral blood leukocytes (lymphocytes) of a subject to recognize epitope in the present peptides and the like.
- HTLV-ITaX-specific T cells can be identified by binding to T cells.
- the fluorescent marker such as PE, a tetramer of the protein-peptide conjugate
- a mononuclear cell fraction is separated from a heparin peripheral blood sample and activated with PE-labeled tetramer (tetramer of protein-peptide conjugate) and CD8 antibody labeled with FITC or Cy5
- PE-labeled tetramer tetramer of protein-peptide conjugate
- CD8 antibody labeled with FITC or Cy5 By performing double staining with a marker antibody and counting the number of CD8-positive tetramer-positive cells throughout the flow site, the immune function of the subject can be examined and diagnosed.
- the expression vector of the present invention is not limited as long as it can express the peptide of the present invention or a conjugate of HLA-A24 (domain and Z or) 3-2 microglobulin) with the peptide of the present invention. Any expression system may be used as long as it is capable of expressing the present peptides in a cell, and may be derived from chromosomes, episomes and viruses.
- Expression systems e.g., from bacterial plasmids, yeast plasmids, papopavirus such as SV40, vaccinia virus, adenovirus, fowlpox virus, pseudorabies virus, retrovirus-derived vectors, bacteriophage, transposon And vectors derived from combinations thereof, for example, plasmids such as cosmid And those derived from the genetic elements of bacteriophages, and among them, viral vectors are preferred.
- These expression systems may contain a control sequence that regulates the expression as well as causes the expression.
- An expression vector series that can be translated by changing the reading frame can also be used advantageously.
- the expression vector of the present invention is useful as an active ingredient in the immune response induction vaccine of the present invention.
- the host cell of the present invention may be a cell containing the present peptide or an expression system capable of expressing a conjugate of HLAA24 (a domain and / or J3-2 microglobulin) and the present peptide. Any host cell may be used.
- host cells used include bacterial prokaryotic cells such as Escherichia coli, Streptomyces, Bacillus subtilis, Streptococcus, and Staphylococcus, eukaryotic cells such as yeast and Aspergillus, and Drosophila S2.
- Insect cells such as Spodoptera Sf9, L cells, CH ⁇ cells, COS cells, HeLa cells, C127 cells, BAL BZc3T3 cells (dihydrofolate reductase—zethymidine quinone) (Including mutants lacking ze) etc., BHK21 Vesicles, HEK293 cells, Bowes melanoma cells, oocytes and other animal and plant cells.
- introduction of the expression system capable of expressing the present peptides into host cells is described in Davis et al. (BASIC METHODS IN MOLECULAR BIOLOGY, 1986) and Sambrook et al.
- host cells of the present invention are useful for elucidating the activity mechanism and molecular mechanism of the peptides of the present invention for inducing HTL VI-specific CTL.
- the method for inducing the HTL V_I recognition CTL of the present invention is derived from a Hatcho patient before HS CT! ! Induction of CTLs that stimulate PBMC of the same patient after HS CT from the same HLA type, i.e., HLA-A24 type donor, using in vitro, in vivo or ex vivo, using D-infected T cells Using the peptides of the present invention, inducing HTL V-I-recognizing CTLs that stimulate PBMC of HLA-A24-positive ATL patients in vitro, in vivo or ex vivo, and expressing the DNA group A vector capable of expressing HLA-A24-positive ATL patients in vitro, by in vivo or ex vivo, for example, by genetically engineering the peptide in antigen-presenting cells in the PBMC.
- the method can be used for the treatment of HTL V-I tumors such as ATL, and is useful for elucidating the activation mechanism and molecular mechanism of HTL V-I-specific CTL induction.
- Patient # 37 had a transient relapse 4 weeks after HSCT, but in all cases achieved a complete remission 2 months after HSCT.
- Heparin-treated blood was collected from patient # 37, 12 days before and 18 days after transplantation, and from patient R07, 30 days before and 255 days after transplantation.
- Their peripheral blood mononuclear cells were isolated by Ficoll-Hypaque Plus gradient centrifugation (Amersham Bioscience, Piscataway, New Jersey) and a portion was stored in liquid nitrogen until used.
- A—2 (cell line).
- HTLV-I-infected T cell lines IL T_ # 37 and ILT-R07, derived from patient # 37 and patient R07 before HSCT, respectively, were established by the following procedure. After removing CD8 + cells from P BMC using Dynabeads M450_CD8 (Dynal, Oslo, Norway), 1 g / m 1 of phytohemagglutinin (PHA) — P (SIGMA, St. Louis And then stimulated with 10% heat-inactivated fetal calf serum (FCS) (SIGMA) and 10 UZm1 of recombinant human IL-12 (Shinogi Pharmaceutical Co., Ltd.).
- PHA phytohemagglutinin
- FCS heat-inactivated fetal calf serum
- SIGMA heat-inactivated fetal calf serum
- PBMCs enriched in whole cells or CD8 + cells of patients # 37 and R07 after HSCT were stimulated with 1 g / ml PHA-P, followed by The cells were mixed with an equal number of ILT- # 37 or ILT-R07 cells pretreated with% formaldehyde / PBS.
- ILT- # 37 or ILT-R07 cells pretreated with% formaldehyde / PBS.
- T cells were maintained in AIM-V TM medium (GIBC0-Invitrogen) supplemented with 10% FCS and 100 U, ml of recombinant human IL-2, and from day 10 to 14 Each ILT cell was stimulated periodically at intervals of days.
- the present inventors prepared a total of 38 peptides (9 to 24 bases in length) to cover the entire sequence of the HTL V-I TaX protein. Some peptides were synthesized according to previous methods (J. Natl. Cancer Inst. 93, 1775-1783, 2001; J. Virol. 66, 2928-2933, 1992) and all other 9-base length peptides were synthesized. Was purchased from Hokudo Co., Ltd. (Hokkaido, Japan). HTLV-I binds to HLA-A2 or HLA-A24 of Tax BI MAS, a computer-based program to identify potential peptides
- A- 6 (Recombinant vaccinia virus)
- IFN-specific ELISP ⁇ T analysis was performed. Then, the number of antigen-specific T cells producing IFN- ⁇ was counted. Briefly, a 96-well PVD F-plate (ELISIPIOSSP, Mil 1), previously coated three times with the anti-IFN-monoclonal macromolecule, 11 D1K (MABTECH, Nacka, Sweden) 3 ⁇ 10 5 cells of ZB PBMC together with 5 ⁇ 10 4 cells / pelle of stimulated cells or 10 ⁇ g / m 1 of peptide were added to ipore, Bedford, Massachusetts). The mixture was allowed to stand at ° C.
- ELISIPIOSSP 96-well PVD F-plate
- the cells were removed and incubated with the biotin-labeled anti-IFN-monoclonal antibody 7-B6-1_biotin (manufactured by MABTECH) for 2 hours, followed by streptavidin algal rephosphatase (MABTECH). For 1 hour. After reacting with BICP / NBT alkaline phosphatase substrate (SIGMA) for 10 minutes, the number of stained spots on the dried membrane was measured using a KS-ELISP0T optical microscope system (Carl Zeiss, Jena, Germany). And counted.
- SIGMA BICP / NBT alkaline phosphatase substrate
- PE Phycoerythrin
- HLA—A * 021/1 / a11-19 LFGYPVYV; SEQ ID NO: 1
- SFHSL HL LF SEQ ID NO: 4
- the tetramer is NIAID Tetramer Fac i 1 i ty, Emory Univ. Vaccine Center at Yerks (At 1 ant a, Georgia)
- the company commissioned synthesis and received the offer.
- Lymphocytes C y - C hrome TM after using the composite anti-CD 8 anti mono Crona Ichiru antibody (BD Pharmingen, Inc.) was stained for 30 minutes, stained with further for 60 minutes 4t with tetramer Then, two-color analysis was performed on a FACSCal ibur using CellQues ⁇ Noftware (manufactured by Beckton Dickinson) (J. Immunol. 162, 1765-1771, 1999).
- T cell response in PBMCs of patient # 37 after HS CT against ILT- # 37 cells was examined 18 days after HSCT when hematopoietic cells were completely replaced by donor-derived hematopoietic cells.
- donor # 36 was an HTL V-I carrier
- the T cell response of donor # 36 to ILT # 37 was also examined. 19 days after the start of culturing, PBMC of patient # 37 and PBMC of donor # 36 after HSCT stimulated twice with ILT-1 # 37 treated with formaldehyde in the presence of IL-12 in in vitro Then, the ability to produce interferon gamma (IFN-a) on IL- # 37 and K562 cells was measured.
- IFN-a interferon gamma
- IFN-7 was produced from both cultures # 37 and donor # 36 after HSCT for ILT- # 37, but not in K562 cells. Was not produced (Fig. 1).
- the magnitude of the IFN- ⁇ production response was much greater in the # 37 culture after HSCT than in the donor # 36 culture.
- Cell proliferation was also faster in the culture of patient # 37 after HSCT than in the culture of donor # 36.
- CTLs cytotoxic T lymphocytes
- the present inventors have found that a 15 to 24 base length corresponding to a Ta X amino acid sequence predicted to be most likely to be an HLA-A2-restricted Tax epitope by a computer program based on the anchor motif. Using a panel of oligopeptides and five 9-mer peptides, the CTL strain of HTLV-I was recognized by the CTL line of patient # 37 after HSCT. I checked the app.
- HTLV-I-specific CTL responses differed qualitatively or quantitatively between # 37 before HSCT, # 37 after HSCT, and donor # 36.
- cryopreserved PBMCs were immediately subjected to ELISPOT analysis to determine IFN-r production.
- Table 1 shows the results for the CTL precursor in non-cultured PBMC of recipient # 37 and donor # 36 responding to ILT- # 37 or TaX epitope.
- the number of IFN-alpha producing cells resulting from overnight stimulation with ILT- # 37 was almost the same in patients # 37 and donor # 36 after HSCT.
- the number of IFN-producing cells responding to the Ta 11-19 peptide was 113 (more in # 37 immediately after that than in donor # 36.
- Patient # 3 before HS CT In 7 PBMCs, the number of IFN-producing cells is generally high even when there is no stimulation, and when stimulated with ILT_ # 37 cells or Ta11-19 peptide. Increased.
- the present inventors also used these cultured PBMCs as HLA Staining was performed with a tetramer of -A * 021 / Taxll-19. Proportion of HLA- A * 0 2 0 1 / T axl 1- 1 9 + cells CD 8 + cells was significantly higher in patients # 3 7 after HSCT than donor # 3 6 (FIG. 4 b).
- the culture of patient # 37 before HS CT consisted mainly of CD8-negative cells.
- HTL V-I specific CTL of # 37 and donor # 36 after HS CT was Proliferate in response to ILT_ # 37 stimulus in vivo, but cannot proliferate # 37 HTLV-I-specific CTL prior to HSCT, and Tax11-19 specific Target CTL was found to be selectively activated in patient # 37 after HS CT.
- a HTLV-I TaX-specific CTL response to a limited number of epitopes was found after nonmyeloablative HSCT from a HLA-infected sibling.
- Cultured P BMC of patient # 37 after HSCT showed much higher amounts of HLA-A * 021 / Taxl1--194 than CTL strain of HTLV-I carrier Dona # 36. It contained CTL stained with the monomer (Fig. 4b). This means that the HTL VI-I specific CTL response in patients after HSCT and the CTL response in donors differ qualitatively as well as in amount of CTL.
- mHAs that have been suggested to be involved in G VHD (N. Engl, J. Med. 334, 281-285, 1996; Science 279, 1054-1057, 1998; Br. J. Haematol 106, 723 -729, 1999; Blood 92, 2169-2176, 1998) are GVL target candidates.
- the ILT- # 37 and ILT-R07 cell lines from ATL patients before HSCT possessed the recipient-derived antigen as well as the HTLV-I antigen.
- Patient # 3 after HSCT for ILT-1 # 3 7 The cytotoxicity of the CTL strain established from step 7 was not completely competed using unlabeled T aX -expressing cells (Fig. 2b). It seems that CTL recognizing is also present.
- HTL V-I-specific CTLs are rarely induced from ATL patients, but CTL for the epitope identified by the present invention is selectively induced from ATL cases that have entered complete remission after stem cell transplantation. Was. This means that this epitope was strongly expressed in the patient's body. It shows that tope is useful as a vaccine antigen.
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005505454A JPWO2004092373A1 (ja) | 2003-04-16 | 2004-04-15 | Htlv−i特異的ctl誘導活性ペプチド |
DE602004014605T DE602004014605D1 (de) | 2003-04-16 | 2004-04-15 | Peptid mit htlv-1-spezifischer ctl-induzierender aktivität |
EP04727742A EP1616950B1 (en) | 2003-04-16 | 2004-04-15 | Peptide having htlv-1-specific ctl-inducing activity |
BRPI0409439-5A BRPI0409439A (pt) | 2003-04-16 | 2004-04-15 | peptìdeo tendo atividade de indução de ctl especìfico para htlv-i, peptìdeo de fusão, corpo de ligação de peptìdeo a proteìna, tetrámero de corpo de ligação de peptìdeo a proteìna, proteìna de fusão, dna, epìtopo de tax restringido por hal-a24, vacina, composição médica, agente de diagnóstico, anticorpo, vetor de expressão, célula hospedeira, e, método para induzir ctl que reconhece htlv-i |
US11/251,195 US20060111551A1 (en) | 2003-04-16 | 2005-10-14 | Peptide having HTLV-1-specific CTL-inducing activity |
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JP2003112138 | 2003-04-16 | ||
JP2003-112138 | 2003-04-16 |
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US11/251,195 Continuation-In-Part US20060111551A1 (en) | 2003-04-16 | 2005-10-14 | Peptide having HTLV-1-specific CTL-inducing activity |
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US (1) | US20060111551A1 (ja) |
EP (1) | EP1616950B1 (ja) |
JP (1) | JPWO2004092373A1 (ja) |
BR (1) | BRPI0409439A (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006035681A1 (ja) * | 2004-09-27 | 2006-04-06 | National University Corporation Tokyo Medical And Dental University | HLA-A11拘束性Tax抗腫瘍エピトープ |
WO2014109289A1 (ja) * | 2013-01-09 | 2014-07-17 | 国立大学法人東京医科歯科大学 | HLA-DR1拘束性Tax特異的CD4+T細胞エピトープ |
WO2020246535A1 (ja) * | 2019-06-05 | 2020-12-10 | 国立大学法人 東京医科歯科大学 | Htlv-i特異的ctl活性化剤 |
WO2021167094A1 (ja) | 2020-02-20 | 2021-08-26 | 陽子 末廣 | 末梢血原料の採取/凍結融解工程における単球純化法 |
Families Citing this family (1)
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WO2018116074A1 (en) | 2016-12-19 | 2018-06-28 | Kabiri Mona | Chimeric peptides against htlv-1 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US5717058A (en) * | 1993-02-23 | 1998-02-10 | Somatogen, Inc. | Peptide inhibitors of tax-dependent transcription |
JP3536039B2 (ja) * | 2001-05-08 | 2004-06-07 | 独立行政法人 科学技術振興機構 | Htlv−i腫瘍に対する抗腫瘍抗原又はその抗原エピトープ |
-
2004
- 2004-04-15 EP EP04727742A patent/EP1616950B1/en not_active Expired - Lifetime
- 2004-04-15 BR BRPI0409439-5A patent/BRPI0409439A/pt not_active IP Right Cessation
- 2004-04-15 JP JP2005505454A patent/JPWO2004092373A1/ja active Pending
- 2004-04-15 WO PCT/JP2004/005414 patent/WO2004092373A1/ja active IP Right Grant
- 2004-04-15 DE DE602004014605T patent/DE602004014605D1/de not_active Expired - Fee Related
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2005
- 2005-10-14 US US11/251,195 patent/US20060111551A1/en not_active Abandoned
Non-Patent Citations (5)
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006035681A1 (ja) * | 2004-09-27 | 2006-04-06 | National University Corporation Tokyo Medical And Dental University | HLA-A11拘束性Tax抗腫瘍エピトープ |
JPWO2006035681A1 (ja) * | 2004-09-27 | 2008-05-15 | 国立大学法人 東京医科歯科大学 | HLA−A11拘束性Tax抗腫瘍エピトープ |
JP5176099B2 (ja) * | 2004-09-27 | 2013-04-03 | 国立大学法人 東京医科歯科大学 | HLA−A11拘束性Tax抗腫瘍エピトープ |
WO2014109289A1 (ja) * | 2013-01-09 | 2014-07-17 | 国立大学法人東京医科歯科大学 | HLA-DR1拘束性Tax特異的CD4+T細胞エピトープ |
WO2020246535A1 (ja) * | 2019-06-05 | 2020-12-10 | 国立大学法人 東京医科歯科大学 | Htlv-i特異的ctl活性化剤 |
WO2021167094A1 (ja) | 2020-02-20 | 2021-08-26 | 陽子 末廣 | 末梢血原料の採取/凍結融解工程における単球純化法 |
Also Published As
Publication number | Publication date |
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DE602004014605D1 (de) | 2008-08-07 |
EP1616950A1 (en) | 2006-01-18 |
JPWO2004092373A1 (ja) | 2006-07-06 |
US20060111551A1 (en) | 2006-05-25 |
EP1616950B1 (en) | 2008-06-25 |
BRPI0409439A (pt) | 2006-04-18 |
EP1616950A4 (en) | 2007-01-17 |
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