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AUTHOR Derr, Kristy and Zou, Jinyun and Luo, Keren and Song, Min Jae and Sittampalam, G. Sitta and Zhou, Chao and Michael, Samuel and Ferrer, Marc and Derr, Paige
Title Fully 3D Bioprinted Skin Equivalent Constructs with Validated Morphology and Barrier Function [Abstract]
Year 2019
Journal/Proceedings Tissue Engineering Part C: Methods
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Abstract
Development of high throughput, reproducible, three-dimensional bioprinted skin equivalents that are morphologically and functionally comparable to native skin tissue is advancing research in skin diseases, and providing a physiologically relevant platform for the development of therapeutics, transplants for regenerative medicine, and testing of skin products like cosmetics. Current protocols for the production of engineered skin rafts are limited in their ability to control three dimensional geometry of the structure and contraction leading to variability of skin function between constructs. Here we describe a method for the biofabrication of skin equivalents that are fully bioprinted using an open market bioprinter, made with commercially available primary cells and natural hydrogels. The unique hydrogel formulation allows for the production of a human-like skin equivalent with minimal lateral tissue contraction in a multiwell plate format, thus making them suitable for high throughput bioprinting in a single print with fast print and relatively short incubation times. The morphology and barrier function of the fully three-dimensional bioprinted skin equivalents are validated by immunohistochemistry staining, optical coherence tomography, and permeation assays.