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Structural study of pro-filaggrin recognition by SASPase

Research Project

Project/Area Number 20K06540
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionUniversity of Toyama

Principal Investigator

Obita Takayuki  富山大学, 学術研究部薬学・和漢系, 准教授 (30578696)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsX線結晶構造解析 / SASPase / 酵素反応 / Filaggrin / HPLC / filaggrin / 酵素活性 / 酵素
Outline of Research at the Start

本研究では、X線結晶構造解析や物理化学的な手法を用いて、SASPaseの基質認識機構を解明し、そこからアトピー性皮膚炎の発症機構の一端を明らかにすることを計画している。高安定性・高活性SASPaseの作製など、アトピー性皮膚炎の新たな治療法の開発に資するSASPaseの分子構造基盤の確立を目指しており、得られた結果から、将来広く社会に貢献することを考えている。

Outline of Final Research Achievements

The functional abnormality of filaggrin molecules is known as one of the causes of atopic dermatitis. Retroviral-like aspartic protease SASPase is known for its specific degradation of profilaggrin molecules, making its enzyme activity mechanism of interest. In this study, we successfully determined the X-ray crystal structures of SASPase and subsequently examined the enzyme activity using HPLC. As a result, we obtained interesting insights into the enzyme activity mechanism of SASPase.

Academic Significance and Societal Importance of the Research Achievements

アトピー性皮膚炎の患者数は、国内で数十万人といわれており、その生活の質の向上のために発症メカニズムの解明や治療法の開発が求められている。これまでフィラグリン分子の機能異常が発症要因として知られていたが、本研究では、SASPaseがフィラグリン分子の分解において重要な役割を果たしているという結果を得ることに成功した。このことは、社会的な意味でアトピー性皮膚炎の治療法の開発に繋がる可能性があると考えている。また、酵素SASPaseが基質を認識する機構を原子レベルで明らかにしたことから、学術的にも大変興味深い結果であると考えている。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 3 results)

  • [Journal Article] Structural and mutational analyses of decarboxylated osteocalcin provide insight into its adiponectin‐inducing activity2023

    • Author(s)
      Mizuguchi Mineyuki、Yokoyama Takeshi、Otani Takahito、Kuribara Shiori、Nabeshima Yuko、Obita Takayuki、Hirata Masato、Kawano Keiichi
    • Journal Title

      FEBS Letters

      Volume: - Issue: 11 Pages: 1479-1488

    • DOI

      10.1002/1873-3468.14618

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Design, synthesis, structure?activity relationship studies, and evaluation of novel GLS1 inhibitors2023

    • Author(s)
      Jo Michiko、Koizumi Keiichi、Suzuki Mizuho、Kanayama Daisuke、Watanabe Yurie、Gouda Hiroaki、Mori Hisashi、Mizuguchi Mineyuki、Obita Takayuki、Nabeshima Yuko、Toyooka Naoki、Okada Takuya
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 87 Pages: 129266-129266

    • DOI

      10.1016/j.bmcl.2023.129266

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Study of Archaeal Basal Transcription Factor TFE2022

    • Author(s)
      帯田 孝之、三輪 康平、水口 峰之
    • Journal Title

      SPring-8/SACLA Research Report

      Volume: 10 Issue: 2 Pages: 143-146

    • DOI

      10.18957/rr.10.2.143

    • ISSN
      2187-6886
    • Year and Date
      2022-04-28
    • Related Report
      2021 Research-status Report
  • [Journal Article] Crystal structure of the PX domain of Vps17p from <i>Saccharomyces cerevisiae</i>2022

    • Author(s)
      Obita Takayuki、Inaka Koji、Kohda Daisuke、Maita Nobuo
    • Journal Title

      Acta Crystallographica Section F Structural Biology Communications

      Volume: 78 Issue: 5 Pages: 210-216

    • DOI

      10.1107/s2053230x22004472

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The hydrophobic residue Leu73 is crucial for the high stability and low aggregation properties of murine transthyretin2022

    • Author(s)
      Nakagawa Mei、Obita Takayuki、Mizuguchi Mineyuki
    • Journal Title

      Biochemical Journal

      Volume: 479 Issue: 18 Pages: 1999-2011

    • DOI

      10.1042/bcj20220203

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] d-Serine controls epidermal vesicle release via NMDA receptor, allowing tissue migration during the metamorphosis of the chordate <i>Ciona</i>2022

    • Author(s)
      Krasovec Gabriel、Hozumi Akiko、Yoshida Tomoyuki、Obita Takayuki、Hamada Mayuko、Shiraishi Akira、Satake Honoo、Horie Takeo、Mori Hisashi、Sasakura Yasunori
    • Journal Title

      Science Advances

      Volume: 8 Issue: 10 Pages: 1-22

    • DOI

      10.1126/sciadv.abn3264

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tau activates microglia via the PQBP1-cGAS-STING pathway to promote brain inflammation2021

    • Author(s)
      Jin Meihua、Shiwaku Hiroki、Tanaka Hikari、Obita Takayuki、Ohuchi Sakurako、Yoshioka Yuki、Jin Xiaocen、Kondo Kanoh、Fujita Kyota、Homma Hidenori、Nakajima Kazuyuki、Mizuguchi Mineyuki、Okazawa Hitoshi
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 6565-6565

    • DOI

      10.1038/s41467-021-26851-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2020-04-28   Modified: 2024-01-30  

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