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Hopkins scientists use embryonic stem cells to regenerate new, completed, fully-working motor neuron circuitsJune 20, 2006
In a dramatic display of stem cells' potential for healing, a team of Johns Hopkins scientists reports that they've engineered new, completed, fully-working motor neuron circuits -- neurons stretching from spinal cord to target muscles -- in paralyzed adult animals.
The research, in which mouse embryonic stem (ES) cells were injected into rats whose virus-damaged spinal cords model nerve disease, shows that such cells can be made to re-trace complex pathways of nerve development long shut off in adult mammals, the researchers say.
"This is proof of the principle that we can recapture what happens in early stages of motor neuron development and use that to repair damaged nervous systems," says Douglas Kerr, M.D., Ph.D., a neurologist who led the Hopkins team.
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