小但强大:调节基因表达的uORFs的多种功能
Zhenfei Zhong1, Yajie Li1, Qinmiao Sun2,3,4,5
1Institute of Biomedical Research, Yunnan University, Kunming, Yunnan 650500, China.
Computational and structural biotechnology journal
|November 11, 2024
概括
上游开放读取框架 (uORF) 调节微生物和哺乳动物的基因表达. 这些uORFs控制翻译和mRNA衰变,由于蛋白质编码能力,在哺乳动物瘤发生中发挥独特的作用.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 上游开放阅读框架 (uORF) 是基因表达的关键 cis 作用调节器.
- uORFs影响翻译启动和mRNA衰变,影响细胞过程.
- uORFs在微生物中发现,并且越来越多地被识别在更高的真核生物中,包括哺乳动物.
研究的目的:
- 要总结微生物中由uORF介导的基因调节的机制.
- 要突出uORFs在哺乳动物细胞中的无处不在性质和功能.
- 介绍最近关于uORF在哺乳动物生理学和瘤产生中的作用的发现.
主要方法:
- 关于uORF在微生物和哺乳动物中的功能现有文献的审查.
- 分析使用核糖体分析,蛋白质分析和计算注释的研究.
- 整合了由uORFs介导的翻译控制和mRNA衰变的发现.
主要成果:
- 微生物中的uORF提供了通过翻译中断或mRNA衰变来理解基因调节的模型.
- uORFs在哺乳动物基因组中普遍存在,并主要在转化层面调节基因表达.
- 哺乳动物uORF在瘤发生过程中表现出独特的作用,这与它们编码蛋白质的能力有关.
结论:
- uORFs是各种各样的生物体中基因表达的保守调节者.
- 哺乳动物的uORF与微生物对应物有机理上的相似之处,但具有不同的功能.
- 对哺乳动物uORF的进一步研究对于了解基因调节和疾病,特别是癌症至关重要.
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