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2019 Fiscal Year Final Research Report

Phosphorylation-dependent regulation of mitochondrial functions and quality control

Research Project

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Project/Area Number 17H03676
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Cell biology
Research InstitutionRikkyo University

Principal Investigator

OKA Toshihiko  立教大学, 理学部, 教授 (40263321)

Project Period (FY) 2017-04-01 – 2020-03-31
Keywordsミトコンドリア
Outline of Final Research Achievements

Mitochondria with low membrane potential are eliminated by autophagy, which is called mitochondrial quality control. It is still unclear how the mitochondrial quality control is regulated by cellular signals.
We have focused on PKA-dependent phosphorylation and determined that intracellular localization of the PKA catalytic subunit isoforms. Furthermore, we found a role of the enzyme in the glycolytic pathway in mitochondrial quality control.

Free Research Field

分子細胞生物学

Academic Significance and Societal Importance of the Research Achievements

本研究では,細胞がミトコンドリア機能を制御する方法としての翻訳後修飾に着目して,ミトコンドリア機能の調節機構を明らかにしようとする点が特徴であり,ミトコンドリア表面だけでなく,これまで手付かずだったミトコンドリア内部でのリン酸化修飾を検証した点がユニークである。
本研究で得られる結果は,ミトコンドリアの機能と品質管理の理解に寄与するだけでなく,PINK1やParkinを原因遺伝子とする遺伝性パーキンソン病の発症メカニズムを理解する上でも重要な知見となる。

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Published: 2021-02-19  

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