And another report with more details
http://www.domain-b.com/technology/biotech_pharma/20171110_rejuvenate.html
Researchers used compounds known as reversatrol analogues, chemicals based on a substance naturally found in red wine, dark chocolate, red grapes and blueberries, to cells in culture.
The chemicals caused splicing factors, which switch off with age to be switched back on.
Within hours, the cells looked younger and started to rejuvenate, behaving like young cells and dividing.