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Infection-independent immunity mediated by a novel endogenious Toll ligand Spz5

Research Project

Project/Area Number 18K15181
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49070:Immunology-related
Research InstitutionYasuda Women's University

Principal Investigator

Nonaka Saori  安田女子大学, 薬学部, 助教 (40767787)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsSpz5 / Toll / ショウジョウバエ / 自然免疫 / Spz5 / 感染非依存の免疫活性化
Outline of Final Research Achievements

We demostrated that Spz5 works as a Toll ligand without clevage by protease in Drosophila although Spz, a famous Toll ligand, needs activation by protease. And, dMyd88 was identified as a signal transducer in the downstream of Spz5-Toll. However, we couldn't show the requirement of Spz5 in infection-independent expression of antimicrobial peptides in larvae after pinching, and the mechanism of infection-independenet immunity remains unclear. Instead of that, we showed genetic interaction between Spz5 and Spz in the developmental process of Drosophila.

Academic Significance and Societal Importance of the Research Achievements

当初の予定であった感染非依存の免疫の異常活性化の仕組みは示せなかったが、本研究により、Spz5が既知のTollリガンドSpzと協調して個体発生に関わるという新たな発生に関わる経路が見つかったと言える。さらに、ショウジョウバエのTollがその哺乳類counterpartであるToll-like受容体と同じようにマルチリガンド性をもつことが初めて示された。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (3 results)

All 2018 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Int'l Joint Research] Universitas Sumatera Utara(インドネシア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universitas Sumatera Utara(インドネシア)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Characterization of Spz5 as a novel ligand for Drosophila Toll-1 receptor2018

    • Author(s)
      Saori Nonaka, Koichiro Kawamura, Aki Hori, Emil Salim, Kazuki Fukushima, Yoshinobu Nakanishi, and Takayuki Kuraishi
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 506 Issue: 3 Pages: 510-515

    • DOI

      10.1016/j.bbrc.2018.10.096

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2021-02-19  

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