Noncoding transcribed ultraconserved region (T ‐UCR) UC.48+ is a novel regulator of high‐fat diet induced myocardial ischemia/reperfusion injury

High ‐fat diet (HFD) is an independent risk factor for myocardial ischemia/reperfusion (MI/R) injury. Uc.48+ is a long noncoding RNA (lncRNA) from a transcribed ultraconserved region (T‐UCR) of human, mouse, and rat genomes. Here, we explored the aggravating role of uc.48+ and identified purinerg ic P2X7 receptor (P2X7R) as a downstream regulator of uc.48+ in HFD‐induced MI/R vulnerability. Targeting uc.48+ may be a novel therapeutic approach of MI/R vulnerability to HFD. AbstractIncreasing evidence has suggested high ‐fat diet (HFD) is an independent risk factor for myocardial ischemia/reperfusion (MI/R) injury. Long noncoding RNAs (lncRNAs) recently attracted much attraction in the study of MI/R injury. However, the functional questions of specific lncRNAs in HFD‐induced MI/R injury have not been well eluci dated. Uc.48+ is a lncRNA from a transcribed ultraconserved region (T‐UCR) of human, mouse, and rat genomes. Here, we explored the aggravating role of uc.48+and identified purinergic P2X7 receptor (P2X7R) as a downstream regulator of uc.48+ in HFD‐induced MI/R vulnerability. We demonstrated uc .48+ expression was upregulated, accompanied by the corresponding upregulation of P2X7R in HFD I/R myocardium and HFD‐induced MI/R vulnerability. Overexpression of uc.48+enhanced, whereas silencing of uc.48 + decreased the expression of P2X7R, cardiomyocyte apoptosis, and MI/R injury. The fu nctional relevance of uc.48+ regulated P2X7R expression a...
Source: Journal of Cellular Physiology - Category: Cytology Authors: Tags: ORIGINAL RESEARCH ARTICLE Source Type: research