Abstract
A theoretical model is developed for cell-to-cell binding by bivalent ligands that can bind to mobile receptors on the cell surfaces. Monovalent inhibitors that can bind either to receptors or ligands are also included. For symmetrical ligands, that is, ligands in which both binding sites are the same, it is shown that crosslinking of receptors on each cell will interfere with intercellular bridge formation. At equilibrium, such interference is not drastic, but if the crosslinks can form before the cells are brought into contact, crosslinking may greatly impede the rate of intercellular binding. Comparison is made with experiments, and the importance of receptor mobility is discussed. It is noted that ligands can also bind a cell to itself or to a surface.
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Bell, G.I. A theoretical model for adhesion between cells mediated by multivalent ligands. Cell Biochem Biophys 1, 133–147 (1979). https://doi.org/10.1007/BF02781347
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DOI: https://doi.org/10.1007/BF02781347