期刊
ANNALS OF BIOMEDICAL ENGINEERING
卷 49, 期 7, 页码 1633-1644出版社
SPRINGER
DOI: 10.1007/s10439-021-02756-5
关键词
Retina; Macular degeneration; Natural polymer; Kerateine
资金
- Miami University College of Arts and Sciences
Researchers have designed a scaffold system mimicking the choroid and Bruch's membrane for the treatment of AMD, with elastic moduli similar to the native tissues. Cells attached to the polycaprolactone fibers, remained viable for one week, and proliferated to form a monolayer, making these constructs suitable for testing cell and/or drug treatment strategies for AMD.
Age-related macular degeneration (AMD) is a retinal disease that affects 196 million people and causes nearly 9% of blindness worldwide. While several pharmacological approaches slow the effects of AMD, in our opinion, cell-based strategies offer the most likely path to a cure. We describe the design and initial characterization of a kerateine (obtained by reductive extraction from keratin proteins) aerogel-electrospun polycaprolactone fiber scaffold system. The scaffolds mimic key features of the choroid and the Bruch's membrane, which is the basement membrane to which the cells of the retinal pigment epithelium (RPE) attach. The scaffolds had elastic moduli of 2-7.2 MPa, a similar range as native choroid and Bruch's membrane. ARPE-19 cells attached to the polycaprolactone fibers, remained viable for one week, and proliferated to form a monolayer reminiscent of that needed for retinal repair. These constructs could serve as a model system for testing cell and/or drug treatment strategies or directing ex vivo retinal tissue formation in the treatment of AMD.
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