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Price: EUR 185.00Authors: Nie, Yan | Xu, Xun | Wang, Weiwei | Ma, Nan | Lendlein, Andreas
Article Type: Research Article
Abstract: BACKGROUND: The formation of spheroids is tightly regulated by intrinsic cell-cell and cell-substrate interactions. OBJECTIVE: The chitosan (CS)-coating was applied to investigate the driven force directed the spheroid formation. METHODS: The effects of CS on cell functions were studied. Atomic force microscopy was employed to measure the cell- biomaterial interplay at single cell level. RESULTS: HaCaT cells shifted from their flattened sheet to a compact 3D spheroidal morphology when increasing CS-coating concentration. The proliferative capacity of HaCaT was preserved in the spheroid. The expression and activation of integrin β 1 (ITGB1) were enhanced on …CS modified surfaces, while the active to total ratio of ITGB1 was decreased. The adhesive force of a single HaCaT cell to the tissue culture plate (TCP) was 4.84±0.72 nN. It decreased on CS-coated surfaces as CS concentration increased, from 2.16±0.26 nN to 0.96±0.17 nN. The adhesive force between the single HaCaT cell to its neighbor cell increased as CS concentration increased, from 1.15±0.09 nN to 2.60±0.51 nN. CONCLUSIONS: Conclusively, the decreased cell- substrate adhesion was the main driven force in the spheroid formation. This finding might serve as a design criterion for biomaterials facilitating the formation of epithelial spheroids. Show more
Keywords: HaCaT cells, spheroid formation, atomic force microscope, single-cell adhesion, chitosan
DOI: 10.3233/CH-209217
Citation: Clinical Hemorheology and Microcirculation, vol. 76, no. 2, pp. 329-340, 2020
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