相关实验视频
Updated: Jul 10, 2026

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Biotin-based Pulldown Assay to Validate mRNA Targets of Cellular miRNAs
Published on: June 12, 2018
通过可逆的mRNA死亡化进行过渡的翻译沉默
J Huarte1, A Stutz, M L O'Connell
1Institute of Histology and Embryology, University of Geneva Medical School, Switzerland.
Cell
|June 12, 1992
概括
在小鼠卵细胞中,信使RNA (mRNA) 的翻译是由多个A的尾巴长度控制的. 可逆死亡化使休眠的mRNA沉默,使成熟过程中调节的蛋白质合成成为可能.
科学领域:
- 分子生物学分子生物学
- 发育生物学 发展生物学
- 基因规则 基因规则
背景情况:
- 组织类型的等离子体激活剂 (tPA) mRNA 储存在未翻译的初级小鼠卵细胞中.
- 多基和死基调节卵细胞成熟期间的mRNA翻译.
- 短的多元A尾巴与mRNA休眠性有关.
研究的目的:
- 研究控制tPAmRNA转化激活的机制.
- 为了识别调节多尾巴长度的序列元素.
- 阐明死乙烯在休眠mRNA的翻译控制中的作用.
主要方法:
- 分析卵细胞中的多基化和死化活动.
- 在mRNA中识别基化控制元素 (ACE).
- 在初级卵细胞中进行记者mRNA翻译测定.
主要成果:
- 核tPA mRNA转录是广泛的多基化.
- 卵子细胞具有死亡化活性,可以使细胞质mRNA沉默.
- 3'UTR中的富含AU的腺化控制元件 (ACE) 阻止了翻译.
- 特定阶段的多A尾部调节控制tPA合成.
结论:
- 可逆死乙烯化是休眠mRNAs的翻译控制的一个关键机制.
- 聚甲尾长度调节确保了卵细胞中特定阶段的蛋白质合成.
- ACEs通过转化沉默来调解未翻译的mRNAs.
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