Randy, does Prochymal block this microRNA? If so, explains why Prochymal works following AMI.
In the latest investigation, UTSW researchers found that hearts of young rodents mounted a robust regenerative response following myocardial infarction, but this restorative activity only occurs during the first week of life. They then discovered that a microRNA called miR-15 disables the regenerative capacity after one week, but when miR-15 is blocked, the regenerative process can be sustained much longer.
“It is a fresh perspective on an age-old problem,” said Dr. Olson, director of the Nancy B. and Jake L. Hamon Center for Basic Research in Cancer, and the Nearburg Family Center for Basic and Clinical Research in Pediatric Oncology who is a co-corresponding author of the PNAS study. “We’re encouraged by this initial finding because it provides us with a therapeutic opportunity to manipulate the heart’s regenerative potential.”