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Updated: Sep 14, 2025

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CompasSeq:在转录分辨率时对代谢物覆盖RNA的表转录组范围的百分比评估

Yuanbo Liu^1,2, Dean Li^1,2, Xueting Wang^1,2

¹Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.

Nature communications

|July 19, 2025

概括

像NAD这样的核酸代谢物可以启动转录,形成非正规启动核酸RNAs (NCIN-RNAs). 一个新的平台,CompasSeq,量化这些NCIN-RNA和它们的比例,在整个表表转录组中使用标准的帽子.

科学领域:

分子生物学分子生物学
在RNA生物学,RNA生物学.
基因组学就是基因组学.

背景情况:

核酸代谢物,如NAD,可以作为非正规启动核酸 (NCIN).
这一过程产生NCIN封顶RNAs (NCIN-RNAs),代表一种独特的RNA修饰.
目前用于NCIN-RNAs分析的方法有限,并且缺乏表表转录组范围的定量能力.

研究的目的:

为量化NCIN-RNAs开发一个全面的分析平台.
为了使NCIN-RNA封闭的转录分辨率评估.
研究NCIN-RNA限制的动态和功能影响.

主要方法:

开发CompasSeq分析平台,整合实验和计算方法.
采用选择性酶反应来捕获NCIN-RNA和用于史泰基测量分析的spike-ins.
采用定量外基核糖酶还原试验来对NCIN-RNAs进行正交验证和限制比率.

主要成果:

康帕塞克能够在转录层面对NCIN-RNA进行全面的定量评估.
在小鼠肝脏中量化以前未经表征的NCIN上限百分比.
在NCIN上限和鉴定与衰老途径相关的基因特异性的基因二分歧中,说明了与年龄相关的动态.

结论:

CompasSeq提供了一个强大的解决方案来分析NCIN-RNA的丰富性和封闭性胆固醇测量.
这项研究揭示了关于NCIN-RNA限制的流行率和年龄相关变化的新见解.
这项工作有助于未来对NCIN-RNAs在生物过程中的功能性研究,特别是衰老.

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