Human heart stem cells have been used to improve symptoms of chronic heart failure in rats magicmine/iStockphoto/Getty Images
A dose of CRISPR-edited heart cells has boosted the survival of rats with chronic heart failure and increased how much they exercised. Tests of the technique in humans could happen within a few years.
Chronic heart failure, where the heart fails to pump blood effectively around the body, is a leading cause of death worldwide. For most people, this long-term condition – involving slow, weak heart contractions – can’t be cured, but its symptoms are …
