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Investigative Ophthalmology & Visual Science, Vol 26, 1599-1609, Copyright © 1985 by Association for Research in Vision and Ophthalmology

ARTICLES AND REPORTS

An improved method for isolation and culture of rat retinal pigment epithelial cells

PL Mayerson, MO Hall, V Clark and T Abrams

Retinal pigment epithelial cells from normal, Long Evans (LE) and retinal dystrophic (RCS) rats can be grown in vitro (Edwards, 1977). An improved technique is described which permits a more rapid isolation of RPE cells, and routinely gives high cell yields (30,000-40,000/eye), excellent cell viability (95%), and high plating efficiencies (95- 100%). Whole eyes are treated with hyaluronidase and collagenase followed by trypsin. These enzymes degrade components of the extracellular matrix, releasing sheets of RPE from adherent attachments to the retina and choroid. Trypsin was then used to dissociate the sheets into single cells. RPE cells are grown to confluence in primary culture. This technique permits RPE cell isolation from both normal and retinal dystrophic (RCS) rats, 8-15 days of age. Normal cells isolated by this technique consistently show excellent phagocytosis in vitro.


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