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动态控制RNA结构和功能通过生物直角的Staudinger化学

Li Zhu¹, Wei Xiong¹, Silin Yang¹

¹State Key Laboratory of Metabolism and Regulation in Complex Organisms, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.

ACS chemical biology

|March 16, 2026

概括

科学家们开发了一种可逆的化学方法来控制RNA功能,使用Staudinger反应. 这种新策略允许精确调节RNA活动,包括在基因编辑应用中,如CRISPR-Cas9.

科学领域:

化学生物学化学生物学
分子生物学分子生物学
在RNA治疗方面,RNA疗法.

背景情况:

RNA分子在基因表达和调节中起着至关重要的作用.
化学控制RNA功能为生物研究和治疗提供了精确的工具.
现有的RNA修饰和调节方法在可逆性和范围上有局限性.

研究的目的:

开发一种可逆化学策略来调节RNA结构和功能.
为了研究使用一种新的双功能化物试剂 (DAPIC) 进行RNA合成后修饰.
展示这个平台在调节CRISPR-Cas9基因编辑系统中的应用.

主要方法:

设计和合成一个双功能的亚化物试剂,1,3-diazidopropan-2-yl 1H-imidazol-1-carboxylate (DAPIC).
使用DAPIC对RNA的2'-基组进行化学修饰,导致功能中断.
通过Staudinger还原使用2-二四乙烯胺 (DPPEA) 来重新激活修饰的RNA.
该系统的应用用于指导CRISPR-Cas9基因编辑中的RNA,评估DNA裂变活性.

主要成果:

达皮克专门修改RNA的2'-基,可逆地抑制其结构和功能.
使用DPPEA减少Staudinger有效地恢复RNA活性,证明了可逆性.
DAPIC修改取消了CRISPR-Cas9 DNA裂变,这种裂变在体外和细胞内以DPPEA依赖的方式恢复.
与单胺类类似物相比,DAPIC显示出增强的反应性和减少的试剂需求.

结论:

已经建立了一个基于Staudinger化学的可逆RNA调节的强大和可通用的化学平台.
这种方法为条件基因编辑和研究复杂生物系统中的RNA功能提供了强大的工具.
对RNA功能的可逆化学控制为基于RNA的疗法和分子诊断开辟了新的途径.

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