tRNA methylation: functional insights and epitranscriptomic regulation.

Authors

Saihao Wang, Yan Wang, Ting Zhao, Binbin Ma, Siyu Chen, Lei Chen, Lili Niu, Ye Zhao, Mailin Gan, Li Zhu, Linyuan Shen

Published in

Cell communication and signaling : CCS. Jun 25, 2026. Epub Jun 25, 2026.

Abstract

tRNAs, one of the most conserved and abundant RNAs, are central components of protein synthesis, transferring genetic information from DNA to proteins through a precise base-pairing mechanism. Post-transcriptional modifications of tRNAs by tRNA modifying enzymes are essential for maintaining their normal physiological functions, including methylation, isomerization and glycosylation. tRNA methylation, particularly 1-methyladenosine (m¹A), 5-methylcytidine (m⁵C), and 7-methylguanosine (m⁷G), are among the most abundant and diverse types of post-transcriptional modifications of tRNA, which promote the stability of tRNA secondary and tertiary structures and allow for proper translation. In addition, tRNA methylation affects the production and function of tsRNA (tRNA-derived small RNA), small fragments of RNA that further regulate gene expression and protein synthesis. In our review, we discuss the relevant biological functions of tRNA methylation, including tRNA stability, protein translation, and tsRNA biogenesis.

PMID:
42351149
Bibliographic data and abstract were imported from PubMed on 26 Jun 2026.

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