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Elusidation of regulatory mechanism for regulatory Tcells by Arl8b

Research Project

Project/Area Number 16K15253
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Experimental pathology
Research InstitutionThe University of Tokyo

Principal Investigator

Saitoh Shin-Ichiroh  東京大学, 医科学研究所, 准教授 (90361625)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords全身性エリトマトーデス / Toll-like receptor 7 / 自己免疫疾患 / Arl8b / 全身性エリテマトーデス / 低分子量Gタンパク質 / 制御性T細胞 / 免疫制御
Outline of Final Research Achievements

I revealed that a small G protein Arl8b is associated with TLR7 and regulates TLR7 function. So, I analyzed several SLE mouse models. In some SLE mouse models, I analyzed the role of Arl8b on MRL/lpr mouse model. I observed that Arl8b plays an essential role for the development of SLE in this model. Because MRL/lpr mouse model is not much dependent on TLR7 function, I analyzed carefully TLR7 independent mechanism. I observed that regulatory T cells significantly increased in spleen of MRL/lpr Arl8b deficient mice compared with MRL/lpr wild type mice. IL-2 controls regulatory T cells. I observed IL-2 receptor expression level in spleen of MRL/lpr Arl8b deficient mouse. I found that IL-2 receptor expression level is significantly high on MRL/lpr Arl8b deficient T cells. I will analyze the role of Arl8b for IL-2 receptor expression and controlling regulatory T cell.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (15 results)

All 2018 2017 2016 Other

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (4 results) (of which Invited: 1 results) Book (1 results) Remarks (4 results)

  • [Journal Article] Mechanisms controlling nucleic acid-sensing Toll-like receptors2018

    • Author(s)
      Miyake Kensuke、Shibata Takuma、Ohto Umeharu、Shimizu Toshiyuki、Saitoh Shin-Ichiroh、Fukui Ryutaro、Murakami Yusuke
    • Journal Title

      International Immunology

      Volume: 30 Issue: 2 Pages: 43-51

    • DOI

      10.1093/intimm/dxy016

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epithelial membrane protein 3 (Emp3) downregulates induction and function of cytotoxic T lymphocytes by macrophages via TNF-α production2018

    • Author(s)
      Kusumoto Yutaka、Okuyama Hiromi、Shibata Takuma、Konno Kazunori、Takemoto Yusuke、Maekawa Daisuke、Kononaga Tomoyuki、Ishii Takashi、Akashi-Takamura Sachiko、Saitoh Shin-ichiroh、Ikebuchi Ryoyo、Moriya Taiki、Ueda Mizuki、Miyake Kensuke、Ono Shiro、Tomura Michio
    • Journal Title

      Cellular Immunology

      Volume: 324 Pages: 33-41

    • DOI

      10.1016/j.cellimm.2017.12.001

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TLR7 mediated viral recognition results in focal type I interferon secretion by dendritic cells2017

    • Author(s)
      Saitoh SI, Abe F, Kanno A, Tanimura N, Mori Saitoh Y, Fukui R, Shibata T, Sato K, Ichinohe T, Hayashi M, Kubota K, Kozuka-Hata H, Oyama M, Kikko Y, Katada T, Kontani K and Miyake K
    • Journal Title

      Nat Commun

      Volume: 8 Issue: 1 Pages: 1592-1592

    • DOI

      10.1038/s41467-017-01687-x

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The protective effect of the anti-Toll-like receptor 9 antibody against acute cytokine storm caused by immunostimulatory DNA2017

    • Author(s)
      Murakami Y, Fukui R, Motoi Y, Shibata T, Saitoh SI, Sato R, Miyake K.
    • Journal Title

      Scientific Report

      Volume: 7 Issue: 1 Pages: 44042-44054

    • DOI

      10.1038/srep44042

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Core fucose is critical for CD14-dependent Toll-like receptor 4 signaling2017

    • Author(s)
      4.Iijima J, Kobayashi S, Kitazume S*, Kizuka Y, Fujinawa R, Korekane H, Shibata T, Saitoh S, Akashi-Takamura S, Miyake K, Miyoshi E, and Taniguch N
    • Journal Title

      Glycobiology

      Volume: 2017 Issue: 11 Pages: 1006-1015

    • DOI

      10.1093/glycob/cwx075

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Arl8b is required for lysosomal degradation of maternal proteins in the visceral yolk sac endoderm of mouse embryos2017

    • Author(s)
      Oka M, Hashimoto K, Yamaguchi Y, Saitoh SI, Sugiura Y, Motoi Y, Honda K, Kikko Y, Ohata S, Suematsu M, Miura M, Miyake K, Katada T and Kontani K
    • Journal Title

      J Cell Sci

      Volume: 130 Issue: 20 Pages: 3568-3577

    • DOI

      10.1242/jcs.200519

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Arl8bは全身性エリテマトーデスモデルマウスBXSB.Yaaの病気の発症に関わっている.2017

    • Author(s)
      齋藤 伸一郎
    • Organizer
      第23回日本エンドトキシン・自然免疫研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ADP-ribosylation factor-like 8b is required for the pathogenesis of mouse models of Systemic Lupus Erythematosus.2017

    • Author(s)
      Shin-Ichiroh Saitoh, Yoshiko Mori Saitoh,  Katsuaki Sato, Kenji Kontani, and Kensuke Miyake
    • Organizer
      第46回日本免疫学会学術集会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Metabolic permission for IFNa induction is connected by Toll-like Receptor 7 trafficking2016

    • Author(s)
      Shin-Ichiroh Saitoh
    • Organizer
      日本免疫学会
    • Place of Presentation
      沖縄コンベンションセンター
    • Year and Date
      2016-12-05
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Toll-like receptor 7の移動は代謝センサーmTorC1による1型インターフェロン産生の制御と結びついている2016

    • Author(s)
      齋藤 伸一郎
    • Organizer
      日本エンドトキシン・自然免疫研究会
    • Place of Presentation
      鹿児島大学 郡元キャンパス
    • Year and Date
      2016-12-02
    • Related Report
      2016 Research-status Report
  • [Book] エンドトキシン・自然免疫202017

    • Author(s)
      齋藤 伸一郎
    • Total Pages
      3
    • Publisher
      日本エンドトキシン・自然免疫研究会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 東京大学医科学研究所 感染遺伝学

    • URL

      http://www.ims.u-tokyo.ac.jp/kanseniden/

    • Related Report
      2017 Annual Research Report
  • [Remarks] 医科学研究所Annual report

    • URL

      http://www.ims.u-tokyo.ac.jp/imsut/jp/about/publication/annualreport/

    • Related Report
      2017 Annual Research Report
  • [Remarks] 東京大学医科学研究所Annual report

    • URL

      http://www.ims.u-tokyo.ac.jp/imsut/jp/about/publication/annualreport/

    • Related Report
      2016 Research-status Report
  • [Remarks] 東京大学医科学研究所 感染遺伝学ホームページ

    • URL

      http://www.ims.u-tokyo.ac.jp/kanseniden/index.html

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

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