microRNA Gel Helps Damaged Hearts Get to a Better Beat

University of Pennsylvania researchers have developed an injectable hydrogel that can deliver microRNAs (miRNAs) directly into heart muscle, triggering proliferation of cardiomyocytes after a heart attack and helping recovery in mouse models. The scientists hope that the technology might represent a new therapeutic approach that exploits miRNAs to promote self-repair of the heart, and potentially other tissues, after injury. “We're seeing a change in approaches for regenerative medicine, u