人类特异性的 lncRNAs 通过明显调节基因表达,为人类进化做出了关键贡献
Jie Lin1,2, Yujian Wen1, Ji Tang1
1Bioinformatics Section, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
eLife
|March 13, 2026
概括
人类特有的长非编码RNAs (lncRNAs) 和它们的调控元素在人类进化过程中显著改变了基因表达. 这些变化促进了适应,大脑发育和人口差异, lncRNAs比转录因子更多地影响大脑.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 人类进化以与猿类和古人类的遗传差异为标志,尽管基因组相似.
- 之前的研究集中在蛋白质编码基因上,使长非编码RNA (lncRNAs) 的作用受到研究.
- lncRNAs是基因表达的关键调节者,在进化过程中发挥着重要作用.
研究的目的:
- 识别人类特异性 (HS) lncRNA及其DNA结合位点 (DBS).
- 研究HS lncRNAs及其DBSs对人类进化过程中的基因表达的影响.
- 为了比较HS lncRNAs与HS转录因子 (TFs) 对基因表达的调控影响.
主要方法:
- 从GENCODE的人类 lncRNA注释中识别了HS lncRNAs.
- 对HS lncRNAs的预测DNA结合域 (DBDs) 和DBSs.
- 在现代人类,古人类和黑猩猩中分析了DBS序列.
- 检查了由HS lncRNA及其DBSs影响的基因表达变化.
- 将HS lncRNA效应与HS TF对GTEx组织基因表达的影响进行比较.
主要成果:
- 在人类进化过程中,HS lncRNAs及其DBSs显著重塑了基因表达.
- 这种重塑促进了适应新的环境和生活方式.
- HS lncRNAs促进了大脑的进化,并导致了跨种群的遗传差异.
- 与HS TFs相比,HS lncRNAs对大脑基因表达产生了更大的影响.
结论:
- HS lncRNAs是人类进化变化的关键驱动力,特别是在大脑发育中.
- lncRNA及其调节元件的不断演变塑造了不同的人类表型.
- 了解lncRNA进化为人类适应和认知进化提供了洞察力.
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