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Klassen, H.J. et al.

Multipotent retinal progenitors express developmental markers, differentiate into retinal neurons, and preserve light-mediated behavior.

PURPOSE: To use progenitor cells isolated from the neural retina for transplantation studies in mice with retinal degeneration. METHODS: Retinal progenitor cells from postnatal day 1 green fluorescent protein-transgenic mice were isolated and characterized. These cells can be expanded greatly in culture and express markers characteristic of neural progenitor cells and/or retinal development. RESULTS: After they were grafted to the degenerating retina of mature mice, a subset of the retinal progenitor cells developed into mature neurons, including presumptive photoreceptors expressing recoverin, rhodopsin, or cone opsin. In rho-/- hosts, there was rescue of cells in the outer nuclear layer (ONL), along with widespread integration of donor cells into the inner retina, and recipient mice showed improved light-mediated behavior compared with control animals. CONCLUSIONS: These findings have implications for the treatment of retinal degeneration, in which neuronal replacement and photoreceptor rescue are major therapeutic goals.[1]

References

Multipotent retinal progenitors express developmental markers, differentiate into retinal neurons, and preserve light-mediated behavior. Klassen, H.J., Ng, T.F., Kurimoto, Y., Kirov, I., Shatos, M., Coffey, P., Young, M.J. Invest. Ophthalmol. Vis. Sci. (2004) [Pubmed]

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