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chitosan-graft-poly (ε-caprolactone)/poly (ε-caprolactone) nanofibrous scaffolds for retinal tissue engineering
作者:honglin …  文章来源:Department of Ophthalmology, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011  点击数259  更新时间:2011/9/13  文章录入:毛进  责任编辑:毛进

A promising therapy for retinal diseases is to employ biodegradable scaffolds to deliver retinal progenitor cells (RPCs) for repairing damaged or diseased retinal tissue. In present study, cationic chitosan-graft-poly (ε-caprolactone)/polycaprolactone (CS-PCL/PCL) hybrid scaffolds were successfully prepared by electrospinning. Characterization of the obtained nanofibrous scaffolds indicated that zeta-potential, fibers diameter and the content of amino groups on their surface were closely correlated with the amount of CS-PCL inCS-PCL/PCL scaffolds. To assess the cell-scaffold interaction, mice retinal progenitor cells (mRPCs) were seeded on the electrospun scaffolds and cultured for 7 days. In vitro proliferation assays revealed that mRPCs grown on the CS-PCL/PCL (20/80) scaffolds were better than other electrospun scaffolds. Scanning electron microscopy (SEM) and real time quantitative PCR (qPCR) results showed that mRPCs grown on CS-PCL/PCL (20/80) scaffolds were more likely to differentiate towards retinal neurons as compared with mRPCs grown on PCL scaffolds. Taken together, our results suggest that potential utilization of CS-PCL/PCL (20/80) scaffolds for retinal tissue engineering.

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