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HLA多型による免疫応答の個体差の決定機序の解析

Research Project

Project/Area Number 08255239
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionKumamoto University

Principal Investigator

西村 泰治  熊本大学, 医学部, 教授 (10156119)

Co-Investigator(Kenkyū-buntansha) 千住 覚  熊本大学, 医学部, 助手 (50274709)
松下 祥  熊本大学, 医学部, 助教授 (50167649)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1996: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsHLAクラスII遺伝子 / 自己免疫疾患 / 多発性硬化症 / 重症筋無力症 / 自己抗原ペプチド / 自己反応性T細胞
Research Abstract

従来より特定のHLAクラスII(HLA-II)遺伝子を有する個体は、特定の自己免疫疾患にかかりやすいことが示されていた。たとえば多発性硬化症(MS)は、白人ではDRB1^*1505を有する個体が疾患感受性を示しまた東洋人に特有の乳幼児発症重症筋無力症(MG)患者の多くがDRB1^*0901あるいはDRB1^*1302を有している。本研究は、日本人のMSと乳幼児MGを対象として、特定のHLAが疾患感受性を決定する機序を解明することを目的とする。57例のMS患者のうち、23例は脳病変が少なく視神経や脊髄病変を合併するアジア型MSであり、34例は白人と同様に脳に病変を多発する西洋型MSであった。HLA-DRB1^*1501の頻度は西洋型MSでは41.2%、アジア型MSでは0%また健康対照群では14.2%であった。つまり2つのMSは臨床所見のみならず、免疫遺伝学的要因も異なることが明らかとなった。
HLA-DRB1^*0901-DQ9/DRB1^*1302-DQ6の乳幼児MG患者の末梢血リンパ球をアセチルコリンレセプターα鎖(AchRα)に対応して合成されたオーバーラッピングペプチドと培養することにより、AchRαペプチドに自己反応性を示すT細胞クローンを樹立した。T細胞エピトープは西洋人では報告されていない、オルターナティブスプライシングを受けるエクソンによりコードされるユニークなものであった。またHLA-DQ6により提示されたペプチドを認識したT細胞は、IFN-γを大量に産生するTh1様細胞であり、これは乳幼児MGでは抗AchR自己抗体の産生が少ないことと対応すると考えられた。このようにアジア人に特有の自己免疫疾患に感受性を示す、アジア人に特有のHLA-II遺伝子とペプチドを同定した。

Report

(1 results)
  • 1996 Annual Research Report
  • Research Products

    (38 results)

All Other

All Publications (38 results)

  • [Publications] Ikagawa,S.et al.: "Single amino acid substitutions on a Japanese cedar pollen allergen (Cryj I)-derived peptide induced alterations in human T cell responses and T cell receptor antagonism" J.Allergy Clin. Immunol.97. 53-64 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Fujisao,S.et al.: "Identification of HLA-DR9 (DRB1^*0901)-binding peptide motifs using a phage fUSE5 random peptide library." Human Immunol.45. 131-136 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Horikawa,K.et al.: "Cyclosporine-responsive pancytopenia and HLA class II alleles of a patient with paroxysmal nocturnal hemoglobinuria." Int.J.Hematol.63. 165-166 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Murakami,S.et al.: "Binding of Ras-or p53-derived peptides to HLA-DR molecules : possible candidates of targets for tumor specific T lymphocytes" Immunol.Letters. 49. 149-153 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Matsushita,S.et al.: "HLA-DQ-binding peptide motifs. I. Comparative binding analysis of type II collagen-derived peptides to DR and DQ molecules of rheumatoid arthritis-susceptible haplotypes" Int.Immunol.8. 757-764 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Okano,M.et al.: "Epitope analysis of HLA-DR-restrictedn helper T-cell responses to Der p II, a major allergen molecule of Dermatophagoies pteronyssinus." Allergy. 51. 29-35 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Matsushita,S.et al.: "Molecular mechanisms underlying HLA-DR-associated susceptibility to autoimmunity" Internatl.J.Cardiol.54 Suppl.S45-S54 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Chen,Y-Z.,et al.: "Response of a human T cell clone to a large panel of altered peptide ligands carrying single residue substitutions in an antigenic peptide" J.Immunol.157. 3783-3790 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kira,J-I.et al.: "Western vs. Asian types of multiple sclerosis : immunogenetically and clinically distinct disorders" Ann.Neurol.40. 569-574 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Matsushita,S.et al.: "Diversity of a human CD4^+ T cell repertoire recognizing one TCR ligand." Immunol.Letters. 51. 191-194 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Matsuoka,T.et al.: "Altered TCR ligands affect antigen-presenting cell responses : Up-regulation of IL-12 by an analogue peptide" J.Immunol.157. 4837-4843 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hashiguchi,S.et al.: "Immunodominance of seven regions of a major allergen,Cry j2 from Japanese cedar pollen for T-cell immunity." Allergy. 51. 621-632 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yokomizo,H.et al.: "Augmentation of immune response by an analog of the antigenic peptide in a human T-cell clone recognizing mutated Ras-derived peptides." Human Immunol.52. 22-32 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Oiso,M.,et al.: "Differential binding of peptides substituted at putative C-terminal anchor residues to HLA-DQ8 and DQ9 differing only at β^<57>." Human Immunol.52. 47-53 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Matsushita,S.,et al.: "Partial activation of human T cell by peptide analogs on live APC : Induction of clonal anergy associated with protein tyrosine dephosphorylation." Human Immunol.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] Fujisao,S.et al.: "Establishment of an enzyume-linked HLA-peptide binding assay and its application to the detailed peptide motifs for HLA-DR9 (DRB1^*0901)." J.Immunol.Methods.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] Nakamura,H.et al.: "Outcome of radical multiple synovectomy as a novel surgical treatment for refractory rheumatiod arthritis-implcation of HAL-DRB1^*0405 in postperative results." Clin.Exp.Rheumatol.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] Nishimura,Y.et al.: "Peptide-based molecular analyses of HLA class II-associated susceptibility ty autoimmune diseases." Int.Rev.Immunol.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] Matsuoka,T.et al.: "Dermatophagoides farinae-1-derived peptides and HLA molecules recognized by T cells from atopic individuals" Int.Arch.Allergy Immunol.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] Wakitani,S.et al.: "The relationship between HLA-DRB1 alleles and disease subserts of rheumatoid arghritis in Japanese." Brit.J.Rheumatol.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] Senju,S.et al.: "Identification of human and mouse GP-1, members of a novel G-protein family." Biochem.Biophys.Res.Comm.(in press.).

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "主要組織適合抗原・ペプチド複合体の構造と機能" 細胞工学. 15. 1007-1021 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "MHCクラスII結合性ペプチドによる免疫抑制療法" 呼吸. 15. 236-243 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "MHCクラスII分子結合性ペプチド" 炎症と免疫. 4. 382-393 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "免疫応答とその制御-最近のトピックス,オーバービュー" 現代医療. 29. 266-278 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 松岡多香子,他: "抗原ペプチド免疫療法" 医療のあゆみ. 180. 79-84 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "HLAと疾患" 診断と治療. 85(印刷中).

    • Related Report
      1996 Annual Research Report
  • [Publications] Tanaka,Y.et al.: "Effect of mAbs to T-cell and adhesion structures on a proliferative responses of a CD4^+ T cell clone with a paracring growth property." Proceedings of 6th International Workshop and Conference on Human Leukocyte Differentiation Antigens (in press.), (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「HLAの構造、機能と免疫調節」,新医科学大系(8)-B,免疫応答-生体の防御機構II" 中山書店, 19 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 横溝 博,他: "「主要組織適合遺伝子複合体(MHC)」,小池隆夫,宮坂信之,山本一彦編,メディカル用語ライブラリー" 羊土社, 2 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 横溝 博,他: "「MHC結合性ペプチド療法」,小池隆夫、宮坂信之、山本一彦編,メディカル用語ライブラリー" 羊土社, 3 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「免疫応答と寛容」,多田富雄ほか編,免疫のフロンティア・免疫寛容" 医学書院, 36 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「MHCクラスII分子と結合ペプチド」,Annual Review「免疫」" 中外医学社, 12 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「移植・腫瘍免疫とヒト主要組織適合抗原(HLA)」,新外科学大系V,外科と分子生物学" 中山書店(印刷中),

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「抗原のプロセッシングとT細胞への提示機構」最新内科学大系・プログレスシリーズ,免疫:アレルギー疾患」" 中山書店(印刷中),

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「HLAと疾患感受性」,新臨床医のための分子医学シリーズ,平野俊夫編,免疫システムと疾患," 羊土社(印刷中),

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「主要組織適合抗原と免疫疾患」,小池隆夫編,内科学XV・免疫・結合織・アレルギー疾患" 医学書院(印刷中),

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村泰治: "「主要組織適合抗原」,分子細胞生物学辞典" 東京化学同人(印刷中),

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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