一个保存的3'UTR短基因调节脊椎动物的基因表达
Ana Eufrásio1,2,3,4, Joana Machado2,3,5,6, Joana Azevedo2,3,4,5
1Vertebrate Development and Regeneration Group, i3S - Universidade do Porto, 4200-135, Porto, Portugal.
Nucleic acids research
|January 8, 2026
概括
在信使RNA (mRNA) 3'未翻译区域 (3'UTRs) 中保存的序列,称为DplUSE,增强基因表达,并与先天性疾病有关. 它的破坏损害了发展,突出了物种之间保存的调节机制.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
背景情况:
- 传递 RNA (mRNA) 3'未翻译区域 (3'UTR) 含有对基因表达至关重要的调节元素.
- 3'UTR内的上游序列元素 (USE) 在调节基因表达方面发挥着重要作用.
- 在Drosophila polo基因的3'UTR中有一种特定的USE,当被改变时会影响成年的表型.
研究的目的:
- 在脊椎动物的3'UTR中识别和描述一个保存的序列基因 (DplUSE).
- 研究DplUSE在跨物种基因表达调节中的功能.
- 探索DplUSE与人类疾病和发育过程的关联.
主要方法:
- 序列分析用于识别人类,斑马鱼和老鼠基因组中保存的DplUSE基因.
- 在人类细胞和斑马鱼胚胎中进行基因表达测试,以评估DplUSE功能.
- RNA结合蛋白 (RBP) 免疫沉和敲除实验以确定相互作用的蛋白质.
- 在DplUSE区域内分析与疾病相关的遗传变异 (SNP).
主要成果:
- 在各种脊椎动物基因的3'UTR中发现了一个保存的DplUSE基因.
- DplUSE增强了人类细胞和斑马鱼胚胎中的基因表达.
- 破坏DplUSE会损害斑马鱼的发育,并与人类的先天性疾病有关.
- 包括HuR/ELAVL1,hnRNPC和PTBP1/hnRNPI在内的RBP与DPLUSE结合,对其活性至关重要.
- PTBP1 调节含有 DplUSE 的基因的替代多基解,而 hnRNPC 和 HuR 调节表达.
- 与结肠癌相关的SNP会产生异位DplUSE位点,从而增加基因表达.
结论:
- DplUSE动机是脊椎动物3'UTR中保存的调节元件,通过RBP相互作用控制基因表达.
- DplUSE在脊椎动物发育中起着至关重要的作用,其失调与人类先天性疾病有关.
- 这种保存机制突显了基因调节的一个基本方面,它对疾病的发病有影响.
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