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Cho, Yoon-Kyoung
Integrated Nano-Biotech Lab (INBL)
Research Interests
  • Microfluidics, Lab-on-a-chip, personalized biomedical diagnostics, nanobioengineering

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Adaptive architecture and mechanoresponse of epithelial cells on a torus

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Title
Adaptive architecture and mechanoresponse of epithelial cells on a torus
Author
Yu, Sun-Min.Li, Bo.Amblard, FrançoisGranick, SteveCho, Yoon-Kyoung
Issue Date
2021-01
Publisher
Pergamon Press Ltd.
Citation
BIOMATERIALS, v.265, pp.120420
Abstract
Curvature is a geometric feature widely observed in the epithelia and critical to the performance of fundamental biological functions. Understanding curvature-related biophysical phenomena remains challenging partly owing to the difficulty of quantitatively tuning and measuring curvatures of interfacing individual cells. In this study, we prepared confluent wild-type Madin–Darby canine kidney cells on a torus structure presenting positive, zero, and negative Gaussian curvatures with a tubule diameter of 2–7 cells and quantified the mechanobiological characteristics of individual cells. Cells on the torus surface exhibited topological sensing ability both as an individual cell and collective cell organization. Both cell bodies and nuclei, adapted on the torus, exhibited local Gaussian curvature-dependent preferential orientation. The cells on the torus demonstrated significant adjustment in the nuclear area and exhibited asymmetric nuclear position depending on the local Gaussian curvature. Moreover, cells on top of the torus, where local Gaussian curvature is near zero, exhibited more sensitive morphological adaptations than the nuclei depending on the Gaussian curvature gradient. Furthermore, the spatial heterogeneity of intermediate filament proteins related to mechanoresponsive expression of the cell body and nucleus, vimentin, keratin and lamin A, revealed local Gaussian curvature as a key factor of cellular adaptation on curved surfaces.
URI
https://scholarworks.unist.ac.kr/handle/201301/48257
URL
https://www.sciencedirect.com/science/article/pii/S0142961220306669
DOI
10.1016/j.biomaterials.2020.120420
ISSN
0142-9612
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