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Elucidation of the regulatory mechanism of RP by regulating PAPR1 activity

Research Project

Project/Area Number 20K18384
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionYamaguchi University

Principal Investigator

Ashimori Atsushige  山口大学, 大学院医学系研究科, 助教 (60870459)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsAging / PARP1 / NAD+ / 網膜色素変性症
Outline of Research at the Start

網膜色素変性症(RP) は、視細胞の神経細胞変性が進行することで視野狭窄などを呈する進行性の指定難病である。RPのに対する薬理的治療の有効性は、一部の患者に限定されており、適切な治療薬選定の上でRP進行の詳細な理解が必要となる。本研究で着目したPARP1は、活性阻害することによりRPの進行を抑制することが報告されており、RP進行より多角的に理解する上で重要な標的と考えられる。そこで、網膜色素細胞におけるPARP1の標的因子の探索並びに、網膜色素細胞特異的にPARP1を欠損または過剰発現したマウスにおけるRP進行を詳細に観察することでRP進行の分子機序を明らかにする。

Outline of Final Research Achievements

The purpose of this study was to elucidate the regulatory mechanisms of retinitis pigmentosa (RP) by regulating PARP1 activity.
This study identified PARP1 target factors by LC-MS/MS that may be involved in RP, and these need to be validated in more detail. We also found that PARP1 activation is differentially regulated by PARP1 activators or inhibitors within eye-derived cells, which may help elucidate the regulatory mechanism of PARP1 in RP progression.

Academic Significance and Societal Importance of the Research Achievements

RPの原因遺伝子及び機序、またはRP進行を遅らせる治療薬の研究などは広く行われてきた一方で、RPとPARP1活性制御を結びつける本研究は新規性が高い。PAR化タンパク質の同定では、RP制御に関与する直接的な因子を発見するには至らなかったものの、近年報告されている手法を用いることにより、ブレイクスルーとなる潜在性がある。また、本研究で予想外にえられたPARP1の活性制御機構は、RP制御の枠を超えPARP1の新たな制御機構および分子機序を明らかにできる可能性がある。

Report

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

    (4 results)

All 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results)

  • [Journal Article] Benzalkonium chloride-induced myofibroblastic transdifferentiation of Tenon’s capsule fibroblasts is inhibited by coculture with corneal epithelial cells or by interleukin-102021

    • Author(s)
      Yamashiro C,Tokuda K,Kobayashi Y,Higashijima F,Yoshimoto T,Ohta M,Ogata T,Ashimori A,Kobayashi M,Hatano M,Uchi SH,Wakuta M,Kimura K
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 16096-16096

    • DOI

      10.1038/s41598-021-94852-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Attenuated SIRT1 activity leads to PER2 cytoplasmic localization and dampens the amplitude of Bmal1 promoter-driven circadian oscillation2021

    • Author(s)
      Ashimori Atsushige、Nakahata Yasukazu、Sato Toshiya、Fukamizu Yuichiro、Matsui Takaaki、Shinohara Kazuyuki、Bessho Yasumasa
    • Journal Title

      Frontiers in Neuroscience

      Volume: - Pages: 647589-647589

    • DOI

      10.3389/fnins.2021.647589

    • NAID

      120007168842

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibition of epithelial-mesenchymal transition in retinal pigment epithelial cells by a retinoic acid receptor-α agonist2021

    • Author(s)
      Kobayashi Y,Tokuda K,Yamashiro C,Higashijima F,Yoshimoto T,Ohta M,Ogata T,Ashimori A,Hatano M,Kobayashi M,Uchi SH,Wakuta M,Kimura K
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 11842-11842

    • DOI

      10.1038/s41598-021-90618-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Attenuated SIRT1 activity leads to PER2 cytoplasmic localization and dampens the amplitude of Bmal1 promoter-driven circadian oscillation2021

    • Author(s)
      Atsushige Ashimori, Yasukazu Nakahata, Toshiya Sato, Yuichiro Fukamizu, Takaaki Matsui, Kazuyuki Shinohara and Yasumasa Bessho
    • Journal Title

      Frontiers in Neuroscience

      Volume: -

    • NAID

      120007168842

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2020-04-28   Modified: 2023-01-30  

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