通过长读序列测量数字端粒测量可以区分健康的衰老和疾病的衰老
Santiago E Sanchez1,2,3,4,5, Yuchao Gu1,4,5, Yan Wang1,4,5
1Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA.
Nature communications
|June 18, 2024
概括
使用纳米孔测序的数字端粒测量揭示了老化的人类细胞失去长端粒. 这种方法准确地跟踪老化和疾病中的端粒长度变化,有助于临床生物标志物的开发.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 生物标志物 生物标志物
背景情况:
- 端粒长度是衰老和细胞健康的关键生物标志物.
- 目前测量端粒长度的方法缺乏足够的分辨率和准确性.
- 了解端粒动态对于衰老和疾病研究至关重要.
研究的目的:
- 开发和应用使用纳米孔测序的高分辨率数字端粒测量 (DTM) 方法.
- 研究人类端粒长度分布随着衰老和各种疾病状态的变化.
- 确定端粒长度作为一个精确的临床生物标志物.
主要方法:
- 使用纳米孔测序用于数字端粒测量 (DTM).
- 测量端粒磨损和延长,最高可达30bp的分辨率.
- 分析了人体细胞群中的端粒长度,来自健康捐献者的血细胞,以及具有端粒维护缺陷的患者.
- 采用机器学习来分类健康个体与具有端粒生物学障碍的个体.
主要成果:
- 衰老与长端粒的逐渐丧失和短端粒的增加有关.
- 具有端粒维护缺陷的个体表现出更明显的短端粒积累,与疾病严重程度相关.
- 在不同的人类细胞类型和条件下测量端粒动态时,DTM实现了高分辨率.
- 一个机器学习模型成功地将健康个体与具有端粒乱的个体区分开来.
结论:
- 通过纳米孔测序进行数字端粒测量,为端粒动力学提供高分辨率的洞察力.
- 端粒长度的变化是生物体衰老和疾病进展的重要指标.
- 这种先进的测序和生物信息学管道增强了对端粒生物学及其临床应用的理解.
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