Clinical utility and biological function of Transfer RNA-derived small RNAs in Patients with Acute Coronary Syndrome [ncRNA-seq]

Acute coronary syndrome (ACS) is one of the leading causes of death worldwide. Aberrant expression of Transfer RNA-derived small RNAs (tsRNA) contributed to various human disease. However, the clincal utility and biological function of tsRNA in ACS are largely unknown. High throughput sequencing revealed a landscape of novel sncRNAs in the human PBMCs. tsRNAs represented a characteristic expression pattern in responding to acute coronary syndrome; tRF-Gly-GCC-06 and tRF-Lys-CTT-02 were significantly up-regulated in patients with unstable angina(UA) and acute myocardial infarction(AMI). Both of the two tRFs demonstrated reasonable diagnostic accuracy for ACS detection. tRF-Gly-GCC-06 and tRF-Lys-CTT-02 upregulation were independent predictors of an increased risk of ACS. Both of the two tRFs expression levels show a significantly positive correlation with Gensini score.Our study identified novel tsRNA alterations associated with ACS and provided potential clinical biomarkers and therapeutic targets. Overall design: We performed high throughput small RNA-sequencing for circulating peripheral blood monocyte cells (PBMCs)samples from 12 acute myocardial infarction patients, 12 unstable angina patients and 12 healthy controls.