What about nanoparticles?
The nanoparticles with their siRNA cargoes were then tested by topically applying them to mice with either skin excisions or burns. In both cases, the wounds closed more than twice as fast as in untreated controls. "Not only did the cells move into the wounds faster, but they knew what to do when they got there," said Dr. Sharp. "We saw normal, well-orchestrated regeneration of tissue, including hair follicles and the skin's supportive collagen network."
They are moving to pig trials soon too:
"Dr. Sharp plans to start testing the therapy on pigs, whose skin closely resembles that of humans, within months."