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Open Access Highly Accessed Research article

Adult ciliary epithelial stem cells generate functional neurons and differentiate into both early and late born retinal neurons under non-cell autonomous influences

Carolina Beltrame Del Debbio1, Xu Peng2, Huangui Xiong2 and Iqbal Ahmad1*

Author Affiliations

1 Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Durham Research Center 1, Room 4044, 985840 Nebraska Medical Center, Omaha, NE 68198-5840, USA

2 Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska 68198-5840, USA

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BMC Neuroscience 2013, 14:130  doi:10.1186/1471-2202-14-130

Published: 22 October 2013

Additional files

Additional file 1:

Protein profile of CE photoreceptors’ differentiation. CE neurospheres were cultured in the presence of PN1CM for 20 days. Immunostaining indicated a small subset of cells with GFP fluorescence (Nrl-GFP, green) demonstrating the activation of Nrl promoter, immunoreactive to GFP antibody (GFP-Ab, red), indicating the specificity of the Nrl-GFP-fluorescence (A,B). Co-localization of Nrl-GFP fluorescence (green) and rhodopsin immunoreactivities (red), detected by RetP1 (C) and Rho4D2 (D). Detailed immunostaining on Retp1 positive cells indicating membrane localization of rhodopsin (E) in differentiated rat CE cells.

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Additional file 2:

Western blot analysis of differentiation of CE stem cells along the rod photoreceptor lineage. CE neurospheres were cultured in the presence of PN1CM for 20 days. Western blot analysis revealed the presence of ~40 kD and ~70 kD immunoreactive bands, corresponding to Rhodopsin (A) and Rhodopsin Kinase (RK) (B), respectively, among other bands in protein samples extracted from the adult retina, untreated CE cells, and CE cells cultured in the presence of PN1CM.

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