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Identification of an internal TLR7 ligand related to the onset of Systemic Lupus Erythematosus

Research Project

Project/Area Number 25670189
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, 助教 (90361625)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords全身性エリトマトーデス / Toll-like receptor 7 / pristane / 内在性リガンド / SLEモデルマウス / TLR7 / 自己免疫疾患 / 1型インターフェロン / 形質細胞用樹状細胞 / RNA / 免疫
Outline of Final Research Achievements

We revealed that a small G protein we identified play a role for type 1 Interferon expression via TLR7 activation. Because it is reported that both TLR7 and type 1 Interferon are related to Systemic Lupus Erythematosus (SLE). We analyzed small G protein deficient SLE model mice, MRL-lpr. As a result, they could not be found the onset of SLE. This result is more significantly inhibited than TLR7 deficient or type 1 interferon receptor deficient MRL-lpr mice. These results indicate that small G protein we identified has an important role for the onset of SLE.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (13 results)

All 2015 2013 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 3 results,  Acknowledgement Compliant: 1 results) Presentation (2 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Roles of the Cleaved N-Terminal TLR3 Fragment and Cell Surface TLR3 in Double-Strand RNA Sensing2015

    • Author(s)
      Murakami Y, Fukui R, Motoi Y, Kanno A, Shibata T, Tanimura N, Saitoh S, Miyake K
    • Journal Title

      Journal of Immunology

      Volume: 193 Issue: 10 Pages: 5208-5217

    • DOI

      10.4049/jimmunol.1400386

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DNase II-dependent DNA digestion is required for DNA sensing by TLR92015

    • Author(s)
      Chan MP, Onji M, Fukui R, Kawane K, Shibata T, Saitoh SI, Ohto U, Shimizu T, Barber GN, *Miyake K
    • Journal Title

      Nat Commun

      Volume: 6 Issue: 1 Pages: 5853-5853

    • DOI

      10.1038/ncomms6853

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Mucolipin 1 positively regulates TLR7 responses in dendritic cells by facilitating RNA transportation to lysosomes2015

    • Author(s)
      Li X, Saitoh S, Shibata T, Tanimura N, Fukui R, Miyake K.
    • Journal Title

      International immunology

      Volume: 27 Issue: 2 Pages: 83-94

    • DOI

      10.1093/intimm/dxu086

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Targeting cell surface TLR7 for therapeutic intervention in autoimmune diseases2015

    • Author(s)
      Kanno A, Tanimura N, Ishizaki M, Ohko K, Motoi Y, Onji M, Fukui R, Shimozato T, Yamamoto K, Shibata T, Sano S, Sugahara-Tobinai A, Takai T, Ohto U, Shimizu T, Saitoh S, Miyake K.
    • Journal Title

      Nature Communications

      Volume: 6 Issue: 1 Pages: 6119-6119

    • DOI

      10.1038/ncomms7119

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The attenuated inflammation of MPL is due to the lack of CD14-dependent tight dimerization of TLR4/MD2 complex at the plasma membrane2013

    • Author(s)
      Tanimura N, Saitoh S, Ohto U, Akashi-Takamura A, Fujimoto Y, Fukase K, Shimizu T, Miyake K
    • Journal Title

      Int. Immunol.

      Volume: 26 Issue: 6 Pages: 307-314

    • DOI

      10.1093/intimm/dxt071

    • Related Report
      2014 Annual Research Report 2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] An essential role for the N-terminal fragment of Toll-like receptor 9 in DNA sensing2013

    • Author(s)
      Onji M, Kanno A, Saitoh S, Fukui R, Motoi Y, Shibata T, Matsumoto F, Lamichhane A, Sato S, Kiyono H, Yamamoto K, Miyake K
    • Journal Title

      Nat. Commun.

      Volume: 4 Issue: 1 Pages: 1949-1949

    • DOI

      10.1038/ncomms2949

    • NAID

      120005359107

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Essential role for Toll-like receptor 7 (TLR7)-unique cysteines in intramolecular disulfide bond, proteolytic cleavage, and RNA-sensing2013

    • Author(s)
      Kanno A, Yamamoto C, Onji M, Fukui R, Saitoh SI, Motoi Y, Shibata T, Matsumoto F, Muta T, Miyake K
    • Journal Title

      Int Immunol.

      Volume: 25 Issue: 7 Pages: 413-422

    • DOI

      10.1093/intimm/dxt007

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] The Arf-like GTPase Arl8b drives TLR7 into type I interferon-mediated inflammation2013

    • Author(s)
      齋藤 伸一郎
    • Organizer
      日本免疫学会学術集会
    • Place of Presentation
      幕張メッセ(千葉市)
    • Related Report
      2013 Research-status Report
  • [Presentation] THE ARF-LIKE GTPASE ARL8B DRIVES TLR7 INTO TYPE I INTERFERON-MEDIATED INFLAMMATION2013

    • Author(s)
      齋藤 伸一郎
    • Organizer
      第19回日本エンドトキシン・自然免疫研究会
    • Place of Presentation
      ロイヤルオークホテル スパ&ガーガデンズ(滋賀県大津市)
    • Related Report
      2013 Research-status Report
  • [Book] 臨床免疫・アレルギー科2013

    • Author(s)
      齋藤 伸一郎
    • Total Pages
      7
    • Publisher
      科学評論社
    • Related Report
      2013 Research-status Report
  • [Remarks] 東京大学医科学研究所感染遺伝学分野

    • URL

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

    • Related Report
      2014 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
      2014 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
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

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