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在儿科发病多发性硬化症中的表观遗传年龄和端粒长度相关性
Jennifer H Yang1, Jonathan Race2, Paige Sumowski1
1Division of Pediatric Neurology, Rady Children's Hospital San Diego, University of California San Diego, La Jolla, CA, USA.
概括
表观遗传时钟 (DNAm) 和端粒长度 (TL) 在儿科多发性硬化症 (MS) 患者和对照组中没有相关性. 这表明这些衰老生物标志物在POMS中捕获了不同的生物过程.
科学领域:
- 生物医学科学 生物医学科学
- 衰老研究研究 衰老研究
- 儿科神经学 儿科神经学
背景情况:
- 年龄是多发性硬化症 (MS) 表现的关键因素.
- 以前的研究表明,使用表观遗传时钟 (DNAm) 和端粒长度 (TL) 在儿科发病性MS (POMS) 中加速生物年龄.
- 在POMS中,DNAm和TL衰老标记之间的关系尚不清楚.
研究的目的:
- 为了研究DNA甲基化 (DNAm) 和端粒长度 (TL) 衰老标志物之间的相关性.
- 为了确定这些衰老生物标志物是否在POMS中捕获重叠或独特的生物过程.
主要方法:
- 在270名参与者 (125名POMS,145名对照) 的横截面病例控制研究中.
- 计算了四个表观遗传时钟 (Horvath,Hannum,PhenoAge,GrimAge) 的年龄加速残余值.
- 从全血样本中测量端粒长度 (TL),并使用多变量共变量分析来评估相关性.
主要成果:
- 在不同的DNAm时钟中观察到适度的相关性.
- 在聚合分析中,DNAm时钟和TL之间没有发现显著的相关性.
- 只有在对照组 (r=0.2,p=0.06) 观察到TL和PhenoAge时钟之间的适度相关性.
结论:
- 在这组POMS和对照中,DNA甲基化标记与端粒长度没有相关性.
- 这些发现表明,DNAm和TL可能代表衰老生物学的互补,不重叠的方面.
- 需要进一步的研究来阐明这些生物标志物在POMS中的独特作用.
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