PMID: 8978657Jan 1, 1997Paper

Retinal pigment epithelium cells cultured on synthetic biodegradable polymers

Journal of Biomedical Materials Research
G G GiordanoD Lahiri-Munir

Abstract

Alterations in the normal structure or functions of retinal pigment epithelium (RPE) can result in a number of ocular diseases. Implantation of RPE cells cultured on thin, biodegradable polymer films may provide a means of transplanting an organized sheet of RPE cells with distinct apical/basal characteristics for the restoration of normal RPE function. We have investigated the interactions of human RPE cells with different biodegradable polymer films to assess their suitability as substrates for RPE culture. Four biodegradable polymers were used: low molecular weight (MW) 50:50 poly(DL-lactic-co-glycolic acid) (PLGA); high MW 50:50 PLGA; 75:25 PLGA; and poly(L-lactic acid) (PLLA). Polymer film substrates were manufactured using a solvent casting technique. Human fetal RPE cells (10-16 weeks gestational) were plated on the polymer substrates and the cultures assessed with respect to cell attachment and proliferation. Histological and immunohistochemical studies were performed on the cells after 8 days in culture. RPE cells attached to all the polymers studied after 8 h in culture. After 8 h, 80.2 +/- 9.5% and 82.3 +/- 7.9% of the plated cells were attached to substrates of high MW 50:50 PLGA and 75:25 PLGA, respectively. The ce...Continue Reading

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