在哺乳动物细胞中对目标内源mRNA的转化增强,使用可编程的RNA结合三重复蛋白
Ning Ping1, Sayuri Hara-Kuge1, Yusuke Yagi2
1Faculty of Agriculture, Kyushu University, Fukuoka, 812-8581, Japan.
Scientific reports
|January 3, 2024
概括
研究人员设计了一种可编程蛋白质支架 (PPR),与转化因子 (eIF4G) 融合在一起,以增强基因表达. 这种新的技术成功地促进了关键细胞mRNA的翻译,为RNA操纵和疾病研究提供了多功能工具.
科学领域:
- 分子生物学分子生物学
- 基因法规 基因法规
- 合成生物学 合成生物学
背景情况:
- 可编程的蛋白质支架,如五重复蛋白 (PPR) 蛋白,对于开发先进的基因组工程工具至关重要.
- PPR蛋白提供可编程的RNA结合选择性,使它们成为RNA操纵的理想选择.
- 翻译,一个关键的RNA调节过程,决定了基因表达水平,并与许多人类疾病有关.
研究的目的:
- 开发一种使用设计者PPR蛋白的新型翻译增强技术.
- 研究PPR蛋白与翻译启动因子eIF4G的融合,以实现向RNA翻译激活.
- 探索基于PPR的转化增强对控制基因表达和细胞命运的潜力.
主要方法:
- 设计者重复蛋白 (PPR) 蛋白质是为特定的RNA向而设计的.
- 创建了一个融合蛋白结构,将PPR与翻译启动因子eIF4G结合起来.
- 评估了PPR-eIF4G融合蛋白对哺乳动物细胞内源性mRNA转化 (c-Myc,p53) 的功能影响.
- 评估了翻译增强对目标mRNA位置和eIF4G存在的依赖性.
主要成果:
- 该PPR-eIF4G融合蛋白成功激活了内源c-Myc和p53mRNAs的翻译.
- 该工程系统通过有针对性的转化增强,证明了对细胞命运的控制.
- 基于PPR的翻译增强被证明是一种适用于哺乳动物细胞中各种内源mRNA的多功能技术.
- 发现翻译增强疗效依赖于目标mRNA的位置和eIF4G的存在.
结论:
- 设计者PPR-eIF4G融合蛋白代表了一种多功能和有效的平台,用于增强哺乳动物细胞内源的mRNA转化.
- 这种基于PPR的翻译增强技术为操纵基因表达和控制细胞命运提供了一种新的方法.
- 这些发现表明,由PPR-eIF4G融合蛋白介导的未知的翻译激活机制,需要进一步调查.
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