New Therapy Repairs Damaged Hearts Using Body's Own Cells

Researchers have engineered a groundbreaking therapy aimed at regenerating damaged heart tissue following a heart attack. This innovative treatment utilizes skeletal muscles to produce a vital healing molecule, ANP. The ANP protein is normally difficult to use as a drug because it degrades quickly in the bloodstream.

The new method involves a specialized RNA injection that instructs muscle cells to create an inactive form of ANP. This dormant protein circulates safely until it reaches an injured heart, where it is activated by a specific enzyme. This targeted approach ensures the repair mechanism functions precisely where needed.

Preclinical studies in animals have shown promising results, including reduced scarring and significantly improved cardiac function after a single injection. The therapy's effectiveness continued for at least four weeks, even when administered a week after the initial injury, mitigating risks associated with direct cardiac injections.