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- W2783229889 abstract "Human mesenchymal stem cells (hMSCs) are encapsulated in synthetic matrix metalloproteinase (MMP) degradable poly(ethylene glycol)-peptide hydrogels to characterize cell-mediated degradation of the pericellular region using multiple particle tracking microrheology. The hydrogel scaffold is degraded by cell-secreted enzymes and cytoskeletal tension. We determine that cell-secreted enzymatic degradation is the main contributor to changes in the pericellular region, with cytoskeletal tension playing a minimal role. Measured degradation profiles for untreated and myosin II inhibited hMSCs have the highest cross-link density around the cell. We hypothesize that cells are also secreting tissue inhibitor of metalloproteinases (TIMPs) to inhibit MMPs, which allow cell spreading and attachment prior to motility. We develop a Michaelis–Menten competitive enzymatic inhibition model which accurately describes the degradation profile due to MMP–TIMP unbinding." @default.
- W2783229889 created "2018-01-26" @default.
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- W2783229889 date "2018-01-19" @default.
- W2783229889 modified "2023-09-27" @default.
- W2783229889 title "Role of Cell-Mediated Enzymatic Degradation and Cytoskeletal Tension on Dynamic Changes in the Rheology of the Pericellular Region Prior to Human Mesenchymal Stem Cell Motility" @default.
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- W2783229889 doi "https://doi.org/10.1021/acsbiomaterials.7b01005" @default.
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