在发育中的神经元中转录的简单重复序列的调节潜力
Tek Hong Chung1, Anna Zhuravskaya1, Eugene V Makeyev2
1Centre for Developmental Neurobiology, New Hunt's House, King's College London, London, SE1 1UL, UK.
Human genetics
|December 28, 2023
概括
在DNA中的简单重复序列 (SRSs) 在神经元分化过程中转录为长非编码RNA (SRS-lncRNAs). 这些新型的转录在神经谱系中得到了上调,这表明它们在大脑发育和疾病中的作用.
科学领域:
- 基因组学就是基因组学.
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 简单的重复序列 (SRSs) 构成了人类基因组的很大一部分.
- SRSs的转录与重复扩张障碍和潜在的正常细胞功能有关.
- 在正常细胞过程中,特别是神经元发育中,SRS转录的作用仍然在很大程度上未被探索.
研究的目的:
- 使用全基因组生物信息学系统地研究神经元分化期间SRSs的转录活性.
- 识别和表征含有SRSs (SRS-lncRNAs) 的长非编码RNA,这些RNA在神经细胞中具有特定的表达或上调.
- 探索这些SRS-lncRNAs的基因组位置,RNA结合蛋白相互作用潜力和表达动态.
主要方法:
- 在分化神经元细胞中对SRS转录活性进行全基因组生物信息学分析.
- 含有SRSs (SRS-lncRNAs) 的长非编码RNA (>200核酸) 的识别和表征.
- 在体外系统用于诱导多能干细胞的快速神经元分化,以验证表达变化.
主要成果:
- 数以千计的SRS-lncRNAs被确定,数百个在神经谱系中显著升级.
- SRS-lncRNAs经常来自端粒近位区域,并显示出广泛的RNA结合蛋白相互作用的潜力.
- 从最近的9号染色体细分重复中发现了一个神经上调的SRS-lncRNAs集群,并证实在发育中的神经元中表达.
结论:
- SRSs被转录为SRS-lncRNAs,其中许多在神经元分化过程中被特别表达.
- 这些SRS-lncRNAs可能在人类正常大脑发育中发挥重要作用.
- 这些发现为研究SRS-lncRNAs在神经发育和疾病中的功能影响提供了资源.
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