Researchers announced this week that they have regrown part of the spinal column of rats. They implanted neural stem cells in the corticospinal tract of rats, and managed to get them to grow as spinal cord cells. The rats gained an increase in motor function (they could move better after the new cells grew). Previous research had tried to do something similar, but this was the first time they got regeneration of spinal cells. This work shows promise for creating new therapies for humans.
“We humans use corticospinal axons for voluntary movement,” said Tuszynski. “In the absence of regeneration of this system in previous studies, I was doubtful that most therapies taken to humans would improve function. Now that we can regenerate the most important motor system for humans, I think that the potential for translation is more promising.”