A Surface-Tailoring Method for Rapid Non-Thermosensitive Cell-Sheet Engineering via Functional Polymer Coatings

Advanced Materials
Jieung BaekSung Gap Im

Abstract

Cell sheet engineering, a technique utilizing a monolayer cell sheet, has recently emerged as a promising technology for scaffold-free tissue engineering. In contrast to conventional tissue-engineering approaches, the cell sheet technology allows cell harvest as a continuous cell sheet with intact extracellular matrix proteins and cell-cell junction, which facilitates cell transplantation without any other artificial biomaterials. A facile, non-thermoresponsive method is demonstrated for a rapid but highly reliable platform for cell-sheet engineering. The developed method exploits the precise modulation of cell-substrate interactions by controlling the surface energy of the substrate via a series of functional polymer coatings to enable prompt cell sheet harvesting within 100 s. The engineered surface can trigger an intrinsic cellular response upon the depletion of divalent cations, leading to spontaneous cell sheet detachment under physiological conditions (pH 7.4 and 37 °C) in a non-thermoresponsive manner. Additionally, the therapeutic potential of the cell sheet is successfully demonstrated by the transplantation of multilayered cell sheets into mouse models of diabetic wounds and ischemia. These findings highlight the abil...Continue Reading

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Citations

Feb 18, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Younghak ChoSung Gap Im
Apr 7, 2021·Biotechnology and Bioprocess Engineering : BBE·Younghak ChoSung Gap Im
Jun 25, 2021·Journal of Biomaterials Applications·Atakan Tevlek, Halil Murat Aydin
May 30, 2021·Advanced Healthcare Materials·Younseong SongSung Gap Im

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