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Functional analysis of type II membrane protein CKAP4 at the individual level

Research Project

Project/Area Number 20K07357
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionOsaka University

Principal Investigator

Takeshi Harada  大阪大学, 大学院医学系研究科, 助教 (30362768)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsCKAP4 / ミトコンドリア / 小胞体 / 脂質 / 肝臓 / 神経変性疾患 / ノックアウトマウス / 老化
Outline of Research at the Start

CKAP4 (cytoskeleton-associated protein 4)は主に小胞体に局在し、小胞体の構造維持
に関わるが、その生体での機能は判然としていない。私は最近、CKAP4ノックアウト(KO)細胞では、ミトコンドリアの膜電位が低下するとともに、ATP産生が低下することを新たに見出した。CKAP4 KOマウスは生後一年半頃から軽度の運動失調と小脳プルキンエ細胞の部分的脱落を示した。本研究ではCKAP4の個体レベルでの機能を明らかにするため、CKAP4 KOマウスの加齢や神経変性疾患に伴う表現型、神経変性疾患におけるCKAP4によるミトコンドリア代謝制御の網羅的解析を行う。

Outline of Final Research Achievements

CKAP4 was identified more than 25 years ago as a type II single transmembrane protein with a molecular weight of 63 KDa that is mainly localized in the endoplasmic reticulum and is involved in the structural maintenance of the ER. However, there have been no reports on CKAP4 KO mice other than ours, and functional analysis at the individual level has not been performed at all. By using CKAP4 KO mice, we were able to clarify how the various functions of CKAP4, which have been clarified in cultured cell-based experiments, are related to the regulation of glucose and lipid metabolism in the individual.

Academic Significance and Societal Importance of the Research Achievements

CKAP4の多彩な機能が個体における糖・脂質代謝調節に如何に関連するかを明らかにすることにより、これまで明らかになっていない小胞体構造タンパク質と糖・脂質代謝調節との関連が明らかとなった。この研究から、糖尿病や脂質異常症・高血圧症・心血管疾患などの生活習慣病の病態解明につながることが期待され、医療という側面からも社会的意義も大きく、創造性の高い研究であったと考えている。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2023 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (2 results)

  • [Journal Article] Wnt5a-YAP signaling axis mediates mechanotransduction in cardiac myocytes and contributes to contractile dysfunction induced by pressure overload2023

    • Author(s)
      Kishimoto Hiroshi、Iwasaki Masayoshi、Wada Kensaku、Horitani Keita、Tsukamoto Osamu、Kamikubo Kenta、Nomura Seitaro、Matsumoto Shinji、Harada Takeshi、Motooka Daisuke、Okuzaki Daisuke、Takashima Seiji、Komuro Issei、Kikuchi Akira、Shiojima Ichiro
    • Journal Title

      iScience

      Volume: 26 Issue: 7 Pages: 107146-107146

    • DOI

      10.1016/j.isci.2023.107146

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Palmitoylated CKAP4 regulates mitochondrial functions through an interaction with VDAC2 at ER?mitochondria contact sites2020

    • Author(s)
      Harada Takeshi、Sada Ryota、Osugi Yoshito、Matsumoto Shinji、Matsuda Tomoki、Hayashi-Nishino Mitsuko、Nagai Takeharu、Harada Akihiro、Kikuchi Akira
    • Journal Title

      Journal of Cell Science

      Volume: 133 Issue: 21

    • DOI

      10.1242/jcs.249045

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] AOM/DSS大腸がんマウスモデルにおけるWnt5a発現線維芽細胞サブセットの同定2021

    • Author(s)
      原田武志、原田昭和、香山尚子、佐藤朗、菊池章
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] パルミトイル化CKAP4はVDAC2を介してミトコンドリア機能を制御する2020

    • Author(s)
      原田武志、佐田僚太、大杉祥仁、松本真司、菊池章
    • Organizer
      第93回日本生化学大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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