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2023 Fiscal Year Final Research Report

Functional Interaction between MRE11 and ATM in cytoplasmic stress responses

Research Project

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Project/Area Number 20K12162
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63020:Radiation influence-related
Research InstitutionInternational University of Health and Welfare

Principal Investigator

Kobayashi Junya  国際医療福祉大学, 成田保健医療学部, 教授 (30301302)

Project Period (FY) 2020-04-01 – 2024-03-31
Keywordsストレス応答 / 酸化ストレス / 脳神経変性 / ATM / MRE11
Outline of Final Research Achievements

The aim of this research is to identify the role of ATM and MRE11 in intracellular stress-response of human vascular endothelial cells. We showed that micro-nuclei were induced in vascular endothelial cells after low-dose rate irradiation. Our DIA proteomics analysis suggests the important proteins for micronuclei formation. We also identify 32 kinds of protein, which increased remarkably after irradiation. Among of them, SOS2, DR-6, MEKK4 increased continuously in response to oxidative stress, suggesting that they might be useful for biological effect markers.

Free Research Field

放射線生物学

Academic Significance and Societal Importance of the Research Achievements

近年、微小核形成は炎症関連因子の分泌機構を活性化し、周辺細胞へ炎症反応を拡大させる可能性が示唆されているが、血管内皮細胞において低線量率放射線照射特異的に微小核形成が誘導されること、またその機構に関与する因子群を明らかにしたことは、今後低線量率放射線被ばく時の血管・循環器系での影響拡大の可能性を検討する上で重要な鍵になると考えられる。また、血管内皮細胞は循環器疾患研究のモデルとなっているが、プロテオミクス解析から低線量率放射線特異的に増加する因子群は低線量率放射線による循環器系疾患の可能性を評価する有力なマーカーとして、将来的に利用できる可能性が考えられる。

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Published: 2025-01-30  

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