基于血液的表观遗传不稳定性与人类衰老和疾病有关
Salman Basrai1,2, Ido Nofech-Mozes1,2, Rajesh Detroja3
1Ontario Institute for Cancer Research, Toronto, ON, Canada.
Nature communications
|February 14, 2026
概括
血液中的DNA甲基化模式在年轻时惊人地稳定,但随着年龄的增长而变化. 这种DNA甲基化不稳定性作为血液生物标志物用于血液癌症和心血管疾病风险.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
- 生物标志物发现发现
背景情况:
- DNA甲基化模式是复杂的,并且在细胞类型之间存在差异,这使得早期疾病标志物的识别变得复杂.
- 确定一致的表观遗传变化对于早期疾病检测和干预至关重要.
研究的目的:
- 在健康个体中识别稳定的DNA甲基化位点.
- 评估这些稳定位点作为血液癌症和心血管疾病的生物标志物的实用性.
主要方法:
- 在年轻,健康的个体中确定了31,744个高度一致的CpG位点.
- 分析了29个队列中的8886名个体,包括癌症和心血管疾病患者,这些位点的甲基化变化.
- 与疾病状况,克隆负担,突变频率,年龄和生存率相关的甲基化变化.
主要成果:
- 在髓状和淋巴状恶性瘤中观察到破坏的DNA甲基化模式,与疾病进展相关.
- 在非癌症队列中,稳定位点的甲基化变异性增加与衰老,心血管疾病风险增加和生存率降低有关.
- 血液中的DNA甲基化不稳定性成为血液癌症和心血管疾病的重要生物标志物.
结论:
- 血液中的表观遗传稳定的DNA甲基化位点可以作为血液癌症和心血管疾病的可靠生物标志物.
- DNA甲基化不稳定与衰老,疾病风险和生存结果有关.
- 发现了DNA甲基化动态与不适应性造血克隆的发展之间的机械联系.
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