人类DNA损伤修复基因的致病变异起源于现代人类的进化过程
Jiaheng Li1,2, Bojin Zhao2, Zixin Qin2,3
1Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Chengdu, Sichuan 610081, China.
Genes & diseases
|February 2, 2026
概括
与癌症风险相关的DNA损伤修复 (DDR) 基因的致病变异最近起源于人类进化. 这些变异通过人类迁移和混合而在全球传播,而不是来自古代非人类来源.
科学领域:
- 遗传学 是一个遗传学.
- 人类进化人类进化
- 癌症基因组学 癌症基因组学
背景情况:
- DNA损伤修复 (DDR) 基因维持基因组的稳定性.
- 在DDR基因的致病变异 (PV) 增加癌症风险.
- 在现代人类中DDR PV的起源仍然不清楚.
研究的目的:
- 研究DNA损伤修复 (DDR) 基因中致病变异 (PV) 的进化起源.
- 了解人类进化在与DDR PV相关的癌症风险中的作用.
- 在人类群体中确定DDR PV的来源和传播模式.
主要方法:
- 遗传学分析以评估进化保护.
- 在超过5000个古人类基因组 (过去4万年) 中对DDR PV进行了人类学分析.
- 对DDR创始人PV的哈普类型化和异构性分析.
主要成果:
- 遗传学分析排除了非人类物种作为DDR PV的来源.
- 在现代人和古代人类之间观察到共享DDR PV的广泛分布.
- DDR PV主要在非非洲人口中发现,在非洲外迁移后,最近起源 (在10,000年内).
- 人类添加物促进了DDR PV的全球传播,比如葡萄牙在巴西的BRCA PV.
- 随机类型和异构性数据支持最近的起源和广泛分布.
结论:
- DDR PV主要起源于现代人类最近的进化历史.
- 在现代人类中,DDR PV引起的高癌症风险是人类进化的结果.
- 了解DDR光伏的起源对于癌症风险评估和预防策略至关重要.
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