心肌细胞中与DNA损伤相关的蛋白共同表达网络提供了对遗传变异和疾病耐受性的信息
Omar D Johnson1,2, Sayan Paul3, Jose A Gutierrez3
1Biochemistry, Cellular and Molecular Biology Graduate Program, University of Texas Medical Branch, Galveston, Texas, USA.
bioRxiv : the preprint server for biology
|August 26, 2024
概括
心脏细胞中的DNA损伤会影响蛋白质网络,影响心血管疾病 (CVD) 风险. 这项研究揭示了DNA损伤如何影响蛋白质的丰富性和连接性,为心血管疾病发展提供了新的见解.
科学领域:
- 心脏病学 心脏病学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 心血管疾病 (CVD) 涉及遗传和环境因素,DNA损伤是关键的分子后果.
- 对心肌细胞蛋白水平的DNA损伤的影响及其与心血管疾病风险的联系尚未完全理解.
研究的目的:
- 研究DNA损伤对全球心肌细胞蛋白质丰富性的影响.
- 探索DNA损伤引起的蛋白质变化与心血管疾病风险因素之间的关系.
主要方法:
- 诱导的多能干细胞衍生的心肌细胞被用破坏DNA的药物多克索鲁比 (DOX) 治疗.
- 蛋白质组分析确定了4,178种蛋白质,形成了一个由12个共同表达模块和403个枢纽蛋白组成的网络.
- 相关性分析将DOX处理与特定的模块和蛋白质联系起来.
主要成果:
- 确定了五个DOX相关的模块,代表了RNA处理,染色体调节和新陈代谢等过程.
- 与DOX相关的枢纽蛋白对功能丧失不耐受基因进行了丰富,对基因变异蛋白进行了耗尽.
- 虽然一些心血管疾病风险蛋白 (例如与心律失常相关的) 存在于DOX模块中,但枢纽蛋白与已知的心血管疾病风险蛋白相互作用,而不是相互作用.
结论:
- 心肌细胞中的DNA损伤通过与心血管疾病相关的蛋白共同表达模块诱导广泛的生物效应.
- 与DNA损伤相关的模块内的蛋白质连接性影响了对遗传变异的耐受性.
- 研究结果表明,DNA损伤通过蛋白相互作用网络影响心血管疾病风险,而不是直接丰富风险蛋白.
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