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Exploration of a new principle for the elimination mechanism of abnormal proteins

Research Project

Project/Area Number 21K19435
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 52:General internal medicine and related fields
Research InstitutionTohoku University

Principal Investigator

Doh-ura Katsumi  東北大学, 医学系研究科, 教授 (00263012)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsプリオン / アルカリフォスファターゼ / 細胞内分解系
Outline of Research at the Start

異常蛋白質凝集体の代表である「プリオン」を用いて検討したところ、細胞内の異常蛋白質排除に関わる新たな蛋白質分解系の存在を強く示唆する結果を得た。本研究では、手掛かりとなるアルカリフォスファターゼを中心に、「新たな蛋白質分解系」に関わる要素群を抽出し、これまで知られていなかった難分解性蛋白質凝集体の細胞内分解系の新原理を究明する。研究では、難分解性プリオン株22Lと持続感染可能細胞N2a#58の3群のサブクローン(持続感染成立細胞、感染消失細胞、非感染細胞)を用いて、アルカリフォスファターゼ関与の妥当性の検証に関わる実験と関連要素の探索に関わる実験を行う。

Outline of Final Research Achievements

From the preliminary study alkaline phosphatase was thought to provide a clue to the principle of a new intracellular degradation system for persistently accumulating protein aggregates such as prions. The results of our research over the past two years have confirmed that alkaline phosphatase affects prion levels in persistently prion-infected cells, but have not provided any clues to elucidate the mechanism of this effect. In addition, it was hypothesized that the alkaline environment at the subcellular domain where alkaline phosphatase acts may be involved in prion degradation and elimination, but it is still undetermined whether this hypothesis is correct or not, and further studies are needed.

Academic Significance and Societal Importance of the Research Achievements

難分解性蛋白質凝集体が細胞内でどのように分解・代謝されているのか、その基本原理は不明であり、既知の分解系だけでは説明できない。新たな基本原理の究明は、難分解性蛋白質凝集体が細胞や組織中に蓄積する様々な疾患に対して、新たな治療開発の糸口を与えてくれる可能性がある。難分解性蛋白質凝集体の代表であるプリオンにおいて、アルカリフォスファターゼとの関係に光をあてた本研究は、この新たな基本原理の究明に結びつく可能性を残し、アルカリフォスファターゼの新たな機能解明につながることが期待される。

Report

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

    (13 results)

All 2023 2022 2021 Other

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Activities of curcumin-related compounds in two cell lines persistently infected with different prion strains2022

    • Author(s)
      Teruya Kenta、Iwabuchi Sara、Watanabe Yuki、Tsuchida Rikiya、Watanabe-Matsui Miki、Konno Hiroyuki、Doh-ura Katsumi
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - General Subjects

      Volume: 1866 Issue: 4 Pages: 130094-130094

    • DOI

      10.1016/j.bbagen.2022.130094

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-prion activity of cellulose ether is impaired in mice lacking pre T-cell antigen receptor α, T-cell receptor δ, or lytic granule function2022

    • Author(s)
      Teruya Kenta、Oguma Ayumi、Takahashi Satoko、Watanabe-Matsui Miki、Tsuji-Kawahara Sachiyo、Miyazawa Masaaki、Doh-ura Katsumi
    • Journal Title

      International Immunopharmacology

      Volume: 107 Pages: 108672-108672

    • DOI

      10.1016/j.intimp.2022.108672

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Therapeutic development of polymers for prion disease.2022

    • Author(s)
      Teruya K, Doh-ura K.
    • Journal Title

      Cell Tissue Res.

      Volume: in press. Issue: 1 Pages: 349-365

    • DOI

      10.1007/s00441-022-03604-1

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] プリオン病の薬物治療2022

    • Author(s)
      照屋健太、堂浦克美
    • Journal Title

      脳神経内科

      Volume: 97 Pages: 467-476

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Decrease in Skin Prion-Seeding Activity of Prion-Infected Mice Treated with a Compound Against Human and Animal Prions: a First Possible Biomarker for Prion Therapeutics2021

    • Author(s)
      Ding Mingxuan、Teruya Kenta、Zhang Weiguanliu、Lee Hae Weon、Yuan Jue、Oguma Ayumi、Foutz Aaron、Camacho Manuel V.、Mitchell Marcus、Greenlee Justin J.、Kong Qingzhong、Doh-ura Katsumi、Cui Li、Zou Wen-Quan
    • Journal Title

      Molecular Neurobiology

      Volume: 58 Issue: 9 Pages: 4280-4292

    • DOI

      10.1007/s12035-021-02418-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Polymorphisms in glia maturation factor β gene are markers of cellulose ether effectiveness in prion-infected mice2021

    • Author(s)
      Teruya Kenta、Oguma Ayumi、Arai Keita、Nishizawa Keikoi、Sakasegawa Yuji、Schatzl Hermann、、Iwabuchi Sara、Watanabe-Matsui MikGilch Sabine、Doh-ura Katsumi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 560 Pages: 105-111

    • DOI

      10.1016/j.bbrc.2021.04.116

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] プリオンの概要2023

    • Author(s)
      堂浦克美
    • Organizer
      第 128 回日本解剖学会総会・全国学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Our Quest for Anti-prion Compounds 20222022

    • Author(s)
      Teruya K, Doh-ura K
    • Organizer
      Asian Pacific Prion Symposium 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Structure-Activity relationship of curcumin-related compounds in ScN2a and N1672022

    • Author(s)
      Teruya K, Iwabuchi S, Kato R, Konno H, Doh-ura K
    • Organizer
      Asian Pacific Prion Symposium 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characterization of the actions of CRANAD on two prion strains and PrP-amyloid2022

    • Author(s)
      Teruya K, Iwabuchi S, Okada M, Yaguchi N, Konno H, Doh-ura K
    • Organizer
      第59 回ペプチド討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] フェロトーシス阻害剤による異常型プリオンタンパク質蓄積抑制機構の解明.2021

    • Author(s)
      松井 美紀、照屋 健太、小熊 歩、村山 和隆、堂浦 克美.
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Photoreaction-induced SDS-resistant PrPSc/res oligomer formation.2021

    • Author(s)
      Kenta Teruya, Toshiya Ishikawa, Sara Iwabuchi, Miki Watanabe-Matsui, Katsumi Doh-ura.
    • Organizer
      第58回ペプチド討論会
    • Related Report
      2021 Research-status Report
  • [Remarks] 東北大学大学院 医学系研究科 神経化学分野

    • URL

      https://www.neurochemistry.med.tohoku.ac.jp/

    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

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