Better Understanding how Cell Therapy can Clear a Scarred Cornea

Researchers here make some progress in understanding how stem cell therapies can reduce scarring in a damaged cornea. While focused on injuries rather than age-related damage, this should hopefully still speed progress towards better therapies for a range of conditions that cause blindness through opaque corneal scarring. That the mechanism is keyed to inflammation may also explain why some other approaches known to reduce levels of inflammation, such as those involving mitochondrially targeted antioxidants, are effective. In cases of severe ocular trauma involving the cornea, wound healing occurs following intervention, but at the cost of opaque scar tissue formation and damaged vision. Recent research has shown that mesenchymal stem cells (MSCs) are capable of returning clarity to scarred corneas; however, the mechanisms by which this happens remained a mystery. Researchers have now identified hepatocyte growth factor (HGF), secreted by MSCs, as the key factor responsible for promoting wound healing and reducing inflammation in preclinical models of corneal injury. Their findings suggest that HGF-based treatments may be effective in restoring vision in patients with severely scarred corneas. "Our results show that mesenchymal stem cells, in an inflamed environment, secrete high levels of HGF, which inhibit scar formation and restore corneal transparency. But if you silence the HGF expression, the stem cells lose their capacity to inhibit scar formation." Tr...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs