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RNA结合蛋白HuR通过增加drosha表达来调节microRNA生物发生

Lin Liu¹, Linxiao Wang², Yanjun Wang³

¹Department of Emergency, First Affiliated Hospital of Air Force Medical University, Shaanxi, Xi'an, 710032, China; Department of Emergency, Honghui Hospital of Xi'an Jiaotong University, Shaanxi, Xi'an, 710054, China.

Experimental cell research

|July 27, 2025

概括

通过控制Drosha表达,RNA结合蛋白HuR通过控制Drosha表达来调节微RNA (miRNA) 生物发生. 这种HuR-Drosha通路对于细胞应激反应和肠道损伤至关重要,提供了潜在的治疗点.

科学领域:

分子生物学分子生物学
细胞应激反应的应激反应
关于RNA的规则关于RNA的规则

背景情况:

微RNA (miRNA) 生物发生因细胞压力因素而改变.
德罗莎是miRNA生物发生和细胞应激反应的关键调节者.
HuR蛋白水平随着压力而增加,但在严重条件下可能会下降,影响其功能.

研究的目的:

研究HuR在miRNA表达和生物发生中的作用.
阐明Drosha上的HuR的监管机制.
评估HuR-Drosha轴在肠道损伤中的体内相关性.

主要方法:

在HuR沉默肠上皮细胞 (IEC-6) 中进行miRNA测序.
在HuR过度表达时评估Drosha表达和活性.
生物信息学,生物化学分析和分子生物学技术用于研究HuR-Drosha mRNA相互作用.

主要成果:

沉默HuR显著降低了大多数miRNAs的调节.
过度表达HuR增加了Drosha表达,通过直接结合DroshamRNA的3'-UTR.
通过增加c-Myc水平,HuR间接地促进了Drosha转录. 在体内,降低的HuR与较低的Drosha相关,小RNA生物生成受损,并在小鼠创伤模型中增加了亡.

结论:

HuR对于通过Drosha调节miRNA生物生成至关重要,影响压力反应和肠道损伤.
胡尔-德罗沙轴是调节miRNA生物发生的潜在治疗点.

关键词:

德罗莎是什么意思德罗莎是什么意思这就是 HuRR 的意思.在P-body中使用P-body 这是一种RNA结合蛋白质.这就是miRNA生物生成的原因.

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