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2020 Fiscal Year Final Research Report

Genetic dissection of the common mechanism of cell competition

Research Project

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Project/Area Number 19K22424
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 44:Biology at cellular to organismal levels, and related fields
Research InstitutionKyoto University

Principal Investigator

Igaki Tatsushi  京都大学, 生命科学研究科, 教授 (00467648)

Project Period (FY) 2019-06-28 – 2021-03-31
Keywords細胞競合 / 細胞死 / 細胞間コミュニケーション
Outline of Final Research Achievements

Cell competition is a form of cell-cell interaction whereby cells with higher fitness eliminate neighboring less fit cells by inducing cell death. In this study, we used fruit fly Drosophila as a model organism and searched for gene mutations that cause cell competition and analyzed the underlying mechanisms. We found that autophagy plays a critical role in driving cell competition and discovered that a transcription factor Xrp1 plays a key role in many types of cell competition triggered by different gene mutations.

Free Research Field

細胞生物学、遺伝学

Academic Significance and Societal Importance of the Research Achievements

本研究により、異なる原因によって引き起こされる細胞競合の実行に共通してオートファジーや転写因子Xrp1が重要な役割を果たすことが明らかになった。本研究の成果により、多細胞生物における細胞間コミュニケーションの仕組みの理解に近づくことができると期待される。また、本成果を基に細胞競合を人為的に制御できるようになれば、がんなどの細胞競合が関わる疾患に対する新たな治療戦略を構築できる可能性がある。

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Published: 2022-01-27  

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