分子动力学揭示了新型VHL变异对东印度ccRCC患者的VHL-Elongin C结合的潜在影响
Srilagna Chatterjee1, Nirvika Paul1, Anwesha Das1
1Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
Scientific reports
|April 15, 2025
概括
这项研究在印度清细胞细胞癌 (ccRCC) 患者中发现了七种新的·希佩尔-林道 (VHL) 基因突变. 这些VHL突变影响蛋白质稳定性和与Elongin C的相互作用,为ccRCC发展提供了洞察力.
科学领域:
- 在瘤学瘤学.
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 细胞癌 (RCC) 是一种常见且致命的尿道恶性瘤.
- ·希佩尔-林道 (VHL) 基因是一种瘤抑制剂,对于通过VHL-Cullin2-ElonginB/C (VCB) 综合体调节蛋白质降解至关重要.
- VHL中的突变始终与清细胞细胞癌 (ccRCC) 的发展有关.
研究的目的:
- 为了调查印度ccRCC患者中偶发的VHL基因突变.
- 分析鉴定突变对pVHL蛋白稳定性的影响及其与Elongin C.的相互作用.
主要方法:
- 从210个ccRCC患者的瘤和相邻正常组织中提取基因组DNA.
- 进行PCR放大和对VHL基因进行测序.
- 在基分析 (I-Mutant 2.0) 用于变体破坏潜力和蛋白质-蛋白质对接/分子动力学模拟用于VHL-Elongin C相互作用.
主要成果:
- 发现了七种新的VHL误解突变:p.(Val170Phe),p.(Arg69Cys),p.(Phe76Leu),p.(Glu173Asp),p.(Leu201Val),p.(His208Leu),p.(Arg205Pro).这些突变包括:
- 在化分析预测这些突变的pVHL稳定性降低 (ΔΔG <-0.5 kcal/mol).
- 分子动力学模拟表明VHL-Elongin C相互作用减弱,p.(Val170Phe) 显示了最显著的破坏.
结论:
- 这项研究提供了关于VHL突变在未经研究的印度ccRCC群体中的新型遗传数据.
- 鉴定到的VHL突变会对pVHL的稳定性和与Elongin C.的结合产生负面影响.
- 这些发现有助于更好地了解与VHL相关的ccRCC病原体,并可能为未来的治疗策略提供信息.
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