An approach to quantifying 3D responses of cells to extreme strain

Yuhui Li, Guoyou Huang, Moxiao Li, Lin Wang, Elliot L. Elson, Tian Jian Lu, Guy M. Genin, Feng Xu

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The tissues of hollow organs can routinely stretch up to 2.5 times their length. Although significant pathology can arise if relatively large stretches are sustained, the responses of cells are not known at these levels of sustained strain. A key challenge is presenting cells with a realistic and well-defined three-dimensional (3D) culture environment that can sustain such strains. Here, we describe an in vitro system called microscale, magnetically-actuated synthetic tissues (micro-MASTs) to quantify these responses for cells within a 3D hydrogel matrix. Cellular strain-threshold and saturation behaviors were observed in hydrogel matrix, including strain-dependent proliferation, spreading, polarization, and differentiation, and matrix adhesion retained at strains sufficient for apoptosis. More broadly, the system shows promise for defining and controlling the effects of mechanical environment upon a broad range of cells.

Original languageEnglish
Article number19550
JournalScientific reports
Volume6
DOIs
StatePublished - Feb 18 2016

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    Li, Y., Huang, G., Li, M., Wang, L., Elson, E. L., Jian Lu, T., Genin, G. M., & Xu, F. (2016). An approach to quantifying 3D responses of cells to extreme strain. Scientific reports, 6, [19550]. https://doi.org/10.1038/srep19550