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通过在3' UTR中通过HuR anchorage引入序列优化的AU丰富元素来提高mRNA翻译效率

Xinghuan Ma¹, Sujia Liu¹, Bangda Fan¹

¹MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian 116024, China.

Molecular therapy. Nucleic acids

|March 24, 2025

概括

研究人员通过在未翻译区域中插入基酸/基酸富元素 (AU富元素) 来优化信使RNA (mRNA). 这一策略增强了mRNA稳定性和蛋白质表达,为先进的mRNA疗法铺平了道路.

科学领域:

分子生物学分子生物学
生物技术是生物技术.
在RNA治疗方面,RNA疗法.

背景情况:

使者RNA (mRNA) 技术具有显著的治疗潜力,但在细胞稳定性和蛋白质表达方面存在局限性.
优化mRNA序列对于克服这些挑战和实现mRNA的全部治疗承诺至关重要.

研究的目的:

开发一种新的策略,以使用AU丰富元素 (ARE) 增强mRNA稳定性和蛋白质表达.
研究RNA结合蛋白的人类抗原R (HuR) 在调解AREs对mRNA的影响中的作用.

主要方法:

将自然和人工AU丰富元素 (ARE) 集成到mRNA结构的3'未翻译区域 (3'UTR).
评估RNA稳定性和蛋白质表达 (露西法酶,EGFP,mCherry,卵蛋白) 与不同的ARE序列和插入点.
进行HuR敲除实验和拉下测试,以确认AREs和HuR之间的相互作用.

主要成果:

在开放式读取框架 (ORF) 和3' UTR之间插入AREs显著提高了RNA稳定性.
细胞质HuR被确定为一种关键蛋白质,通过与ARE的相互作用促进mRNA稳定性和翻译.
工程化ARE,特别是那些含有"AUUUA"重复的ARE,增加了蛋白质表达的5倍.
在多个编码蛋白中证明了AREs的增强效应,证实了它们的普遍性.

结论:

利用AREs和像HuR这样的RNA结合蛋白来改善mRNA的药理动力学提供了一个强有力的策略.
这种方法提高了细胞质mRNA的稳定性和翻译性,扩大了mRNA技术的治疗应用.

关键词:

3′ UTR 合理设计富含AU元素的元素可以在AU中找到.这就是 HuRR 的意思.MT:寡核酸:治疗方法和应用.RNA 稳定性 RNA 稳定性 RNA结合蛋白质是RNA结合的蛋白质.在mRNA疫苗的使用中.序列优化优化序列优化

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