TRF-Gln-CTG-026 ameliorates liver injury by alleviating global protein synthesis.

ABSTRACT: tsRNAs (tRNA-derived small RNAs), as products of the stress response, exert considerable influence on stress response and injury regulation. However, it remains largely unclear whether tsRNAs can ameliorate liver injury. Here, we demonstrate the roles of tsRNAs in alleviating liver injury by utilizing the loss of NSun2 (NOP2/Sun domain family, member 2) as a tsRNAs-generating model. Mechanistically, the loss of NSun2 reduces methyluridine-U5 (m⁵U) and cytosine-C5 (m⁵C) of tRNAs, followed by the production of various tsRNAs, especially Class I tsRNAs (tRF-1s). Through further screening, we show that tRF-Gln-CTG-026 (tG026), the optimal tRF-1, ameliorates liver injury by repressing global protein synthesis through the weakened association between TSR1 (pre-rRNA-processi

SUBMITTER: Ying S 

PROVIDER: S-EPMC10073094 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature