2012 Fiscal Year Final Research Report
Role of memory T helper cells in vivo
Project/Area Number |
22689014
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Immunology
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Research Institution | Chiba University |
Principal Investigator |
TOKOYODA Koji 千葉大学, 大学院・医学研究院, 講師 (20362402)
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Project Period (FY) |
2010 – 2012
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Keywords | 免疫記憶 / ヘルパーT細胞 / 骨髄 / 二次免疫反応 / 抗原提示細胞 |
Research Abstract |
We focused on CD69 which is known as an activation marker, because resting memory T helper cells expressed it in the bone marrow and clarified the essential role of CD69 in relocation of splenic effector T helper cells to the bone marrow by using CD69-deficient mice which our laboratory generated. Moreover, we also found the sufficient role of CD49b, also called as integrin alpha2, in their relocation by using CD49b-deficient mice (in revision). These data suggest that effector T helper cells expressing both CD69 and CD49b from the secondary lymphoid organs relocate to the bone marrow by a two-step process. To examine roles of bone marrow memory T helper cells, we evaluated humoral immune response of CD69-deficient mice which lacks them. CD69-deficient mice have a marked reduction of production of high-affinity antibodies and generation of long-lived plasma cells in the bone marrow, although they normally produced antibodies and generate splenic plasmablasts in the early phase of an immune response. The reduction was due to a defective help of bone marrow memory T helper cells for homing of plasmablasts to the bone marrow. Since this helper function is antigen-dependent, the data suggests a fact of T-B interaction via T-cell receptor/MHC class II. Since CD69-deficient mice can normally generate follicular helper T cells and germinal center B cells, this help for B lineages is a novel role of bone marrow memory T helper cells after germinal center reaction. We are identifying the essential candidates for this T-cell help and the studies will contribute the understanding of T helper cell memory.
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Research Products
(16 results)
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[Journal Article] Type II membrane protein CD69 regulates the formation of resting T-helper memory2012
Author(s)
Shinoda, K., Tokoyoda, K., Hanazawa, A., Hayashizaki, K., Zehentmeier, S., Hosokawa, H., Iwamura, C., Koseki, H., Tumes, J. D., Radbruch, A., and Nakayama, T.
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Journal Title
Proc. Natl. Acad. Sci. USA
Volume: 109
Pages: 7409-7414
DOI
Peer Reviewed
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[Journal Article] Eomesodermin controls interleukin-5 production in memory T helper 2 cells through inhibition of activity of the transcription factor GATA32011
Author(s)
Endo, Y., Iwamura, C., Kuwahara, M., Suzuki, A., Sugaya, K., Tumes, J. D., Tokoyoda, K., Hosokawa, H., Yamashita, M., Nakayama, T.
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Journal Title
Immunity
Volume: 35
Pages: 733-745
DOI
Peer Reviewed
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[Journal Article] IL-22 attenuates IL-25 production by lung epithelial cells and inhibits antigen-induced eosinophilic airway inflammation2011
Author(s)
Takahashi, K., Hirose, K., Kawashima, S., Niwa, Y., Wakashin, H., Iwata, A., Tokoyoda, K., Renauld, J.-C., Iwamoto, I. and Nakayama, T., Nakajima, H.
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Journal Title
J. Allergy Ciln. Immunol
Volume: 128
Pages: 1067-1076
DOI
Peer Reviewed
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[Journal Article] Persistence of effector memory Th1 cells is regulated by the homeobox protein Hopx2010
Author(s)
Albrecht, I., Niesner, U., Janke, M., Menning, A., Loddenkemper, C., Kuhl, A.A., Lepenies, I., Lexberg, M.H., Westendorf, K., Hradilkova, K., Grun, J., Hamann, A., Epstein, J.A., Chang, H.D., Tokoyoda, K. and Radbruch, A.
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Journal Title
Eur. J. Immunol
Volume: 40
Pages: 2993-3006
DOI
Peer Reviewed
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[Presentation] CD69 regulates the formation of resting T-helper memory2012
Author(s)
Shinoda, K., Tokoyoda, K., Hanazawa, A., Hayashizaki, K., Hosokawa, H., Iwamura, C., Koseki, H., Tumes, D., Radbruch, A., and Nakayama, T.
Organizer
第41回日本免疫学会学術集会
Place of Presentation
神戸
Year and Date
20121205-07
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[Presentation] CD69 regulates the formation of resting T-helper memory2012
Author(s)
Shinoda, K., Tokoyoda, K., Hanazawa, A., Hayashizaki, K., and Nakayama, T.
Organizer
THE 34th NAITO CONFERENCE ON Infection, Immunity, and their control for Health
Place of Presentation
Sapporo
Year and Date
20121016-19
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[Presentation] Generation and maintenance of memory CD4 T cells2012
Author(s)
Nakayama, T., Endo, Y., Kuwahara, M., Yamashita, M., Iwamura, C., Shinoda, K., and Tokoyoda, K.
Organizer
THE 34th NAITO CONFERENCE ON Infection, Immunity, and their control for Health.(招待講演)
Place of Presentation
Sapporo
Year and Date
20121016-19
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[Presentation] CD69 and CD49b regulate the establishment and maintenance of T helper cell memory2012
Author(s)
Tokoyoda, K., Hanazawa, A., Shinoda, K., Radbruch, A., Nakayama, T.
Organizer
3rd European Congress of Immunology
Place of Presentation
Glasgow, Scotland.
Year and Date
2012-09-06
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