HDAC9 and familial dilated cardiomyopathy: In this study, the hmMSC were isolated from human healthy and DCM myocardium biopsies and their MSC origin [49], proliferation and ability to differentiate to cardiomyogenic direction combining intracellular (HDAC inhibitor SAHA) and extracellular biomatrices (hybrid collagen I-based hydrogels) has been investigated.