“…With their well-known paracrine activity that promotes angiogenesis, enhances cell survival, and activates endogenous stem cells [3,4], methods that augment such paracrine activity with an aim to further the therapeutic potential of MSCs have also been investigated. For example, transplantation of MSCs overexpressing different angiogenic and cytoprotective factors, such as the stromal-derived factor-1 (SDF-1) [5], vascular endothelial growth factor-A (VEGF-A), hepatocyte growth factor (HGF) [6], angiopoietin-1 [7], and angiogenin (ANG) [8] significantly improve cardiac function through increased myocardial vascular density in animal models of myocardial infarction. In addition, targeting transcription factors, such as Akt-1 [9] and GATA-4 [10] that regulate the expression of multiple paracrine factors in MSCs, have also resulted in a significant increase in the in vitro production of various angiogenic and cytoprotective factors, and cardioprotection of the infarcted heart when the cells are implanted into the myocardium.…”