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Retinal pigment epithelium engineering using synthetic biodegradable polymers.

机译:使用合成的可生物降解聚合物对视网膜色素上皮进行工程改造。

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摘要

Retinal pigment epithelium (RPE) plays a key role in the maintenance of the normal functions of the retina, especially photoreceptors. Alteration in RPE structure and function is implicated in a variety of ocular disorders. Tissue engineering strategies using synthetic biodegradable polymers as temporary substrates for RPE cell culture and subsequent transplantation may provide a promising new therapy. In this review article, the manufacture of thin biodegradable poly(DL-lactic-co-glycolic acid) (PLGA) films and their degradation behavior in vitro are discussed. RPE cell proliferation and differentiation on these PLGA films are reviewed. The fabrication of model substrates with desired chemical micropatterns in the micrometer scale is discussed and the effects of surface patterning on RPE morphology and function are assessed. Finally. the preparation of biodegradable micropatterns with adhesive PLGA and non-adhesive poly(ethylene glycol)/PLA domains to modulate RPE cell adhesion is presented.
机译:视网膜色素上皮(RPE)在维持视网膜特别是感光器的正常功能中起关键作用。 RPE结构和功能的改变与多种眼疾有关。使用合成的可生物降解的聚合物作为RPE细胞培养和后续移植的临时底物的组织工程策略可能会提供一种有希望的新疗法。在这篇综述文章中,讨论了可生物降解的聚DL-乳酸-乙醇酸薄膜(PLGA)薄膜的制备及其体外降解行为。评论了这些PLGA膜上RPE细胞的增殖和分化。讨论了在微米尺度上具有所需化学微图案的模型基板的制造,并评估了表面构图对RPE形态和功能的影响。最后。提出了具有粘性PLGA和非粘性聚(乙二醇)/ PLA结构域以调节RPE细胞粘附性的可生物降解微图案的制备。

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