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2022 Fiscal Year Final Research Report

Comprehensive and unbiased analysis of the human SMC5/6 complex: Taking advantage of auxin-inducible degron system

Research Project

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Project/Area Number 19K06495
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43010:Molecular biology-related
Research InstitutionTokyo Metropolitan Institute of Medical Science (2021-2022)
National Institute of Genetics (2019-2020)

Principal Investigator

NATSUME Toyoaki  公益財団法人東京都医学総合研究所, ゲノム医学研究センター, 主席研究員 (10435513)

Project Period (FY) 2019-04-01 – 2023-03-31
KeywordsSMC5/6 / オーキシンデグロン法 / 染色体分配 / 核内ボディ
Outline of Final Research Achievements

The SMC5/6 complex plays a pivotal role in chromosome dynamics, but its function is still elusive. This study aimed to unveil a fundamental function of the human SMC5/6 complex by taking advantage of the auxin-inducible degron technology, which enabled us to rapidly degrade a target protein in cells. As a result, I showed that the SMC5/6 complex suppresses the formation of DNA entanglements during DNA replication, thus maintaining chromosome integrity.

Free Research Field

分子細胞遺伝学

Academic Significance and Societal Importance of the Research Achievements

これまで謎に包まれていた染色体安定性に必須な因子SMC5/6が、染色体DNAの絡まりを抑制していることをヒト細胞を用いて明確に示した。今後、SMC5/6の異常が引き起こす染色体不安定性疾患の原因解明につながることが期待される。また、SMC5/6は自己炎症性疾患やウイルス感染防御との関連も近年示唆されているが、本研究で開発した研究ツールは、今後これらの課題に取り組む際に大変有用になると考えられる。

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Published: 2024-01-30  

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