NOTCH1 and acute myocardial infarction: In acute myocardial infarction, XIST protected hypoxia-induced cardiomyocyte injury and repressed myocardial apoptosis by interacting directly with various miRNAs and positively regulated expression of anti-apoptotic biomarkers such as Bax, hexokianse 2, and Notch1 (56, 57).