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转录因子E2F8通过NUSAP1调节DNA损伤,促进肝细胞癌中西斯普拉丁抗性
Jianqiao Kong1, Song Xu1, Peng Zhang1
1Department of General Surgery, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, China.
International journal of toxicology
|June 18, 2023
概括
通过抑制DNA损伤修复,E2F8/NUSAP1通路促进肝细胞癌 (HCC) 中的西斯普拉丁耐药性. 针对这个轴可以提高化学疗法在HCC患者的有效性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 西斯普拉丁耐药性是肝细胞癌 (HCC) 治疗的一个主要挑战.
- 基因损伤修复机制与化学抵抗有关.
- 核细胞和关联蛋白1 (NUSAP1) 在HCC对西斯普拉丁耐药性的作用需要阐明.
研究的目的:
- 研究NUSAP1在调节HCC中DNA损伤和西斯普拉丁耐受性的分子机制.
- 探索HCC中E2F8和NUSAP1之间的监管关系.
- 评估针对E2F8/NUSAP1轴的治疗潜力.
主要方法:
- 实时定量PCR检测E2F8和NUSAP1.1的mRNA表达
- 染色体免疫沉 (ChIP) 和双酶记者测定证实了E2F8-NUSAP1的相互作用.
- 细胞活力 (CCK-8),细胞循环 (流细胞计),DNA损伤 (γ-H2AX,彗星检测) 和西部斑分析.
主要成果:
- 在HCC中观察到E2F8和NUSAP1的高mRNA表达.
- E2F8直接结合并调节NUSAP1.1的促进活性.
- 在HCC中,NUSAP1敲除增强了思丁诱导的DNA损伤和敏感性.
- 过度表达E2F8促进了细胞循环停止,增加了DNA损伤,并通过沉默NUSAP1.1增强了对西斯的敏感性.
结论:
- 在HCC中,E2F8/NUSAP1轴在调节DNA损伤和西斯普拉丁耐药性方面发挥着至关重要的作用.
- E2F8通过激活抑制DNA损伤的NUSAP1来增强HCC的化学抵抗力.
- 这一轴代表了一种潜在的治疗点,用于改善西斯丁在HCC的疗效.
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