lncRNAs的秘密生活:保存,但没有保存
Harshita Sharma1, Piero Carninci1
1Laboratory for Transcriptome Technology, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.
Cell
|May 4, 2020
概括
长非编码RNAs (lncRNAs) 显示复杂的进化. 人类胚胎干细胞 (ESC) 中的位置保存的lncRNA被拼接并输出到细胞质,与小鼠ESC不同,它们仍然是核.
科学领域:
- 进化生物学
- 分子生物学
- 干细胞生物学
背景情况:
- 长非编码RNAs (lncRNAs) 在基因调节中起着至关重要的作用.
- 了解 lncRNA 进化提供了对特定物种生物功能的洞察力.
- 人类胚胎干细胞 (ESC) 和小鼠ESC提供了对比研究的模型.
研究的目的:
- 研究位置保守的 lncRNA 的进化复杂性.
- 为了比较人类和小鼠ESC之间 lncRNAs的处理和定位.
- 为了阐明不同 lncRNA 处理如何影响多能性维护.
主要方法:
- 进行比较基因组学以识别位置保存的 lncRNA.
- 测序和拼接分析以评估 lncRNA 处理.
- 细胞分离和局部化研究以确定 lncRNA 的分布.
主要成果:
- 在人体ESC中位置保存的lncRNA被广泛拼接并输出到细胞质.
- 相比之下,小鼠ESC中的同类lncRNAs主要是未结合的,并保留在细胞核中.
- 这些不同的处理和本地化模式表明了特定物种的功能分歧.
结论:
- lncRNA的进化涉及到超出序列保存的复杂的调节机制.
- 差异性RNA处理有助于 lncRNA 保持多能性的特定物种功能.
- 这项研究突显了 lncRNA 进化和功能的新层复杂性.
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