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Abstract:
Adhesion of a biological cell to another cell or the extracellularmatrix involves complex couplings between cell biochemistry,structural mechanics, and surface bonding. The interactionsare dynamic and act through association and dissociation ofbonds between very large molecules at rates that change considerablyunder stress. Combining molecular cell biology with single-moleculeforce spectroscopy provides a powerful tool for exploring thecomplexity of cell adhesion, that is, how cell signaling processesstrengthen adhesion bonds and how forces applied to cell-surfacebonds act on intracellular sites to catalyze chemical processesor switch molecular interactions on and off. Probing adhesionreceptors on strategically engineered cells with force duringfunctional stimulation can reveal key nodes of communicationbetween the mechanical and chemical circuitry of a cell.
1 Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA. 2 Department of Pathology and Laboratory Medicine, Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada V6T 2A6. 3 Department of Pharmacology and Interdepartmental Program in Vascular Biology and Transplantation, Yale University School of Medicine, New Haven, CT 06520, USA.
* To whom correspondence should be addressed. E-mail: evans{at}physics.ubc.ca
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