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Cones regenerate from retinal stem cells sequestered in the inner nuclear layer of adult goldfish retina.
- Source :
-
Investigative ophthalmology & visual science [Invest Ophthalmol Vis Sci] 2001 Aug; Vol. 42 (9), pp. 2115-24. - Publication Year :
- 2001
-
Abstract
- Purpose: To determine whether retinal progenitor cells in the inner nuclear layer give rise to regenerated cones after laser ablation of photoreceptors in adult goldfish retina.<br />Methods: Using a technique developed previously in this laboratory, photoreceptors in the retina of adult goldfish were ablated with an argon laser. The mitotic marker, bromodeoxyuridine, was used to label proliferating and regenerated cells, which were identified with cell-specific markers.<br />Results: Cells proliferating locally within lesion included microglia, Müller glia, and retinal progenitors in the inner nuclear layer (INL). The nuclei of both Müller glia and associated retinal progenitors migrated from the inner to the outer nuclear layer. The proliferating retinal progenitors, which express Notch-3 and N-cadherin, regenerated cone photoreceptors and then rod photoreceptors.<br />Conclusions: Previous work has demonstrated that photoreceptors in the goldfish retina regenerate selectively after laser ablation, but the source of regenerated cones has not been identified. The results reported here provide support for the existence of retinal stem cells within the adult fish retina that are capable of regenerating cone photoreceptors. The data also support the involvement of Müller glia in the production of regenerated cones.
- Subjects :
- Animals
Bromodeoxyuridine metabolism
Cell Differentiation
Cell Division
Fluorescent Antibody Technique, Indirect
Immunoenzyme Techniques
In Situ Hybridization
Laser Therapy
Microglia physiology
Retina cytology
Retina surgery
Retinal Cone Photoreceptor Cells cytology
Retinal Rod Photoreceptor Cells physiology
Stem Cells cytology
Goldfish physiology
Regeneration physiology
Retinal Cone Photoreceptor Cells physiology
Stem Cells physiology
Subjects
Details
- Language :
- English
- ISSN :
- 0146-0404
- Volume :
- 42
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Investigative ophthalmology & visual science
- Publication Type :
- Academic Journal
- Accession number :
- 11481280