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Development of an Electrospun Poly(Ε-Caprolactone)/Collagen-Based Human Amniotic Membrane Powder Scaffold for Culturing Retinal Pigment Epithelial Cells Publisher Pubmed

Summary: Study finds HAMP/PCL scaffolds mimic retinal tissue, boosting cell growth. Could this help vision loss? #RetinalDisease #TissueEngineering

Majidnia E1 ; Ahmadian M1 ; Salehi H2 ; Amirpour N2
Authors

Source: Scientific Reports Published:2022


Abstract

The common retinal diseases are age-related macular degeneration (AMD) and retinitis pigmentosa (RP). They are usually associated with the dysfunction of retinal pigment epithelial (RPE) cells and degeneration of underlying Bruch’s membrane. The RPE cell transplantation is the most promising therapeutic option to restore lost vision. This study aimed to construct an ultrathin porous fibrous film with properties similar to that of native Bruch’s membrane as carriers for the RPE cells. Human amniotic membrane powder (HAMP)/Polycaprolactone (PCL) scaffolds containing different concentrations of HAMP were fabricated by electrospinning technique. The results showed that with increasing the concentration of HAMP, the diameter of fibers increased. Moreover, hydrophilicity and degradation rate were improved from 119° to 92° and 14 to 56% after 28 days immersion in phosphate-buffered saline (PBS) solution, respectively. All scaffolds had a porosity above 85%. Proper cell adhesion was obtained one day after culture and no toxicity was observed. However, after seven days, the rate of growth and proliferation of ARPE-19 cells, a culture model of RPE, on the PCL-30HAMP scaffold (HAMP concentration in PCL 7.2% by weight) was higher compared to other scaffolds. These results indicated that PCL-30HAMP fibrous scaffold has a great potential to be used in retinal tissue engineering applications. © 2022, The Author(s).
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