Paradigm shift in antigen recognition of T cells
Project/Area Number |
18K19441
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Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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Allocation Type | Multi-year Fund |
Review Section |
Medium-sized Section 49:Pathology, infection/immunology, and related fields
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Research Institution | University of Toyama |
Principal Investigator |
Kishi Hiroyuki 富山大学, 学術研究部医学系, 教授 (60186210)
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Project Period (FY) |
2018-06-29 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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Keywords | T細胞受容体 / 抗原認識 / シス相互作用 / cis相互作用 / 抗原/MHC複合体 / MHC/ペプチド複合体 |
Outline of Final Research Achievements |
Macrophages that phagocytose pathogenic microorganisms, or virus-infected cells degrade bacterial or viral proteins into peptides and present them on the cell surface by binding them onto the major histocompatibility complex (MHC) molecules on the cells. T cells use the T cell receptors (TCR) to recognize MHC molecule/peptide complexes on the target cells and eliminate viruses and bacteria from the body. In this context, the TCR interacts with MHC molecule/peptide complexes on the surface of different cells. In this study, we showed that antigenic protein-derived peptides expressed in T cells is presented to the MHC molecules on the T cells, interacts with the same cell surface TCR (cis-interaction), and activates the T cells. Furthermore, the application of cis-interaction of TCR and MHC/peptide complexes was investigated.
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Academic Significance and Societal Importance of the Research Achievements |
従来、T細胞は、TCRを用いて、標的細胞上のMHC分子/ペプチド複合体を認識することが知られていた(trans相互作用)。本研究により、T細胞上のTCRが自分自身のMHC分子/ペプチド複合体とcisの相互作用をすることで活性化しうることが示されたことで、今後、T細胞の活性化を考える際に、transの相互作用に加えてcisの相互作用の可能性も同時に考える必要がある。また、cisの相互作用を用いた抗原同定法や抗原特異的T細胞の同定法によりT細胞の解析がより進展すると期待される。
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Report
(3 results)
Research Products
(43 results)
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[Journal Article] A cloning and expression system to probe T-cell receptor specificity and assess functional avidity to neoantigens2018
Author(s)
Hu Z, Anandappa AJ, Sun J, Kim J, Leet DE, Bozym DJ, Chen C, Williams L, Shukla SA, Zhang W, Tabbaa D, Steelman S, Olive O, Livak KJ, Kishi H, Muraguchi A, Guleria I, Stevens J, Lane WJ, Burkhardt UE, Fritsch EF, Neuberg D, Ott PA, Keskin DB, Hacohen N, Wu CJ
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Journal Title
Blood
Volume: 132
Issue: 18
Pages: 1911-1921
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Introduction of genetically modified CD3ζ improves proliferation and persistence of antigen-specific CTLs.2018
Author(s)
Miyao K, Terakura S, Okuno S, Julamanee J, Watanabe K, Hamana H, Kishi H, Sakemura R, Koyama D, Goto T, Nishida T, Murata M, Kiyoi H.
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Journal Title
Cancer Immunol Res
Volume: 6
Issue: 6
Pages: 733-744
DOI
Related Report
Peer Reviewed
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[Presentation] The identification of a common loss-function mutation across different HLA class alleles frequently detected in patients with acquired aplastic anemia.2019
Author(s)
Mizumaki H, Hosomichi K, Tanabe M, Yoroidaka T, Imi T, Hosokawa K, Katagiri T, Takamatsu H, Ozawa T, Azuma F, Kishi H, Tajima A, Nakao S.
Organizer
24th Congress of European Hematology Association
Related Report
Int'l Joint Research
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[Presentation] Identification of T-cell receptors specific to antigens presented by HLA-B4002 and B5401 in acquired aplastic anemia.2019
Author(s)
Hosokawa K, Kobayashi E, Akatsuka Y, Espinoza L, Nakagawa N, Tanabe M, Tsuji N, Yoroidaka T, Mizumaki H, Mai A.T.N., Katagiri T, Shitaoka K, Hamana H, Kishi H, Nakao S.
Organizer
61st Annual Meetings of American Society of Hematology
Related Report
Int'l Joint Research
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[Presentation] Identification of T cell receptors specific to antigens presented by HLA-B4002 in aplastic anemia.2019
Author(s)
Hosokawa K, Kobayashi E, Akatsuka Y, Espinoza L, Nakagawa N, Tanabe M, Tsuji N, Yoroidaka T, Mizukami H, Mai A. T. N, Katagiri T, Shitaoka K, Hamana H, Kishi H, Nakao S.
Organizer
第81回日本血液学会学術集会
Related Report
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[Presentation] Clonally expanded populations of cytotoxic T cell in tumor infiltrated lymphocyte and peripheral blood in endometrial cancer.2018
Author(s)
Tsuda K, Kishi H, Nakashima A, Hamana H, Ushijima A, Tsuda S, Shima T, Shitaoka K, Kobayashi E, Ozawa T, Yoshino O, Saito S.
Organizer
17th Biennial Meeting of the International Gynecologic Cancer Society
Related Report
Int'l Joint Research
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[Presentation] Clonally expanded populations of cytotoxic T cell in tumor infiltrated lymphocyte and peripheral blood in uterine endometrial cancer.2018
Author(s)
Tsuda K, Kishi H, Nakashima A, Hamana H, Tsuda S, Shima T, Shitaoka K, Kobayashi E, Ozawa T, Muraguchi A, Saito S.
Organizer
第47回日本免疫学会学術集会
Related Report
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