๐”– Bobbio Scriptorium
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Fibroblast growth factor receptors and regeneration of the eye lens

โœ Scribed by David S. McDevitt; Samir K. Brahma; Yves Courtois; Jean-Claude Jeanny

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
232 KB
Volume
208
Category
Article
ISSN
1058-8388

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โœฆ Synopsis

If the eye lens of the adult newt, Notophthalmus viridescens, is removed, a new lens will regenerate and only from the dorsal, not the ventral, iris. The source, pigmented epithelial cells, would normally no longer divide, but upon lentectomy they do re-enter the cell cycle and form lens. The cause for this capability is unknown, but the mitogenic Fibroblast Growth Factors and their receptors may be involved. We have demonstrated that FGF receptors are present and operative in lens regeneration, since receptor-directed mitotoxins inhibit regeneration; heterogeneity and differential density in FGF-binding and receptor localization in iris sectors is also present. We propose that the spatial distribution of FGF receptors, especially the amphibian homolog of FGFR-3, is important in initiation of regeneration of eye lens.

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