Repir of Retina by Stem cells

[aftabac]

Retina Repair
Photoreceptor loss results in irreversible blindness in many retinal diseases. Attempts to repair the damage by implanting brain or retinal stem cells into adult retina have largely failed, with no new photoreceptors produced and few signs that transplanted cells connect with retinal neurons or restore vision. Now, an experiment in mice shows that adult retina can incorporate new photoreceptor cells, provided the transplanted cells are committed rod precursors at a certain stage of development, defined by expression of transcription factor Nrl. The study could pave the way for the generation of cells suitable for transplantation from either embryonic or adult-derived stem cells. The findings also challenge the common assumption that undifferentiated stem cells offer the best prospect for CNS repair.
If this is successful in experiments in human then this process will give light to million of people which do not have vision.
Source (www.nature.com)
Regards
Aftab ahmad