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Updated: Sep 10, 2025

Metabolic Labeling and Profiling of Transfer RNAs Using Macroarrays

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Published on: January 16, 2018

通过tRNA阵列方法同时表达至少21个转移RNA

Ryota Miyachi¹, Keiko Masuda², Yoshihiro Shimizu²

¹Department of Life Science, Graduate School of Arts and Science, The University of Tokyo, Meguro, Tokyo, Japan.

Nature communications

|August 26, 2025

概括

研究人员开发了一种简化方法,同时在体外合成所有21种必需转移RNA (tRNA). 这一突破推动了人工细胞的制造,并简化了基因工程的tRNA制备.

科学领域:

合成生物学
分子生物学
生物化学

背景情况:

转移RNA (tRNA) 对于蛋白质翻译至关重要.
在实验室中合成最少的21个tRNA是人工细胞建设的挑战.
5'和3'端的tRNA需要复杂的多步反应.

研究的目的:

开发一种简化方法,同时在体外合成所有21种tRNA.
克服tRNA终端处理对人工细胞发展的障碍.
为基因工程应用制备tRNA创造一种高效的方法.

主要方法:

测试了两种5'-end处理方法 (领导和5'-G变种).
评估了两种3'-end处理方法 (直接tRNA链接和HDVR附加).
将组合方法转化为"tRNA阵列"方法,用于从PURE系统中的单个DNA模板同时表达.

主要成果:

使用tRNA阵列方法成功实现了所有21个tRNA的同时表达.
这种tRNA混合物产生的支持翻译水平与单独合成的luciferase和GFP的tRNA相当.
证明了多个tRNA的简化,统一的处理策略.

结论:

这种tRNA阵列方法可使所有21种必需的tRNA在体外同步有效合成.
这种简化处理是构建可自我复制的人造细胞的重要一步.
该方法为基因编码工程和合成生物学准备tRNA提供了有价值的工具.

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A Rapid High-throughput Method for Mapping Ribonucleoproteins RNPs on Human pre-mRNA

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Published on: December 2, 2009

相关概念视频

Transfer RNA Synthesis

Transfer RNA Synthesis

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Ribosome Profiling

Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
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Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...