At a glance
For a long time we believed we had already found the holy grail of regenerative medicine. The dogma seemed irrefutable: When an organ fails or a wound refuses to heal, we need fresh, living cells - preferably stem cells - which we send into the body like microscopic construction workers to repair the damage. But while the world still swore by mesenchymal stem cells (MSCs) as the gold standard of therapy, researchers encountered a paradox that changed everything.
It was observed that transplanted stem cells often died or were rejected by the body shortly after injection. And yet the unthinkable happened: healing still began. How could that be? How can a construction worker repair a house if he has already left the site? The answer to this mystery leads us to one of the most fascinating discoveries of the 21st century. We have realized that the cell itself is not the miracle cure, but what it leaves behind: its “message”. We call it the secretome.
