It modulates cellular interaction with the ECM by its binding to structural matrix proteins, such as collagen and vitronectin, and by its abrogation of focal adhesions, which are features contributing to a counter-adhesive effect on cells.
It also has counter-adhesive properties, inducing cell rounding, inhibiting cell spreading [2], and mediating focal adhesion disassembly and reorganization of actin stress fibers [3].
This protein has counter-adhesive properties, has effects on cell shape, immune surveillance and angiogenesis [ 5]; inhibits cell proliferation and delays cell cycle in the G1 phase [ 6].
Our data indicate that glycosylation ensures the accessibility of CX3CL1 to the CX3CR1 molecules buried in the membrane of the counter-adhesive cell.
The data obtained with the w/o cyto CX3CL1 mutant using the dual pipette assay suggest that the CX3CL1 molecule without its cytosolic domain has the same probability to functionally bind the CX3CR1 receptor in the counter-adhesive cell as the native CX3CL1 (Fig. 1F), but that its resistance to radial force is slightly less, likely due to some impaired link to the cytoskeleton (Fig. 1E).
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As over 90% of mucosal T cells express an adhesive counter-receptor specific only for E-cadherin, it is likely that this interaction performs a physiologically important role within the epithelial compartment.
After deposition, an adhesive and counter-substrate were added to the top "as-deposited" surfaces of the films and they were peeled off the wafer, exposing the metal interface that initially formed at the native oxide.
The rate of cell adhesion as an indication of cell adhesive affinity was measured using a Coulter Counter.
Our molecular analyses do not support a noncell-autonomous activity of a diffusible LAT-1 ectodomain (Langenhan et al., 2009), a separable activity of the anchored N terminus based on adhesive properties, or the activation of counter-receptors on adjacent cells in a reverse signaling mode (this work).
Specific adhesion molecules important in mediating adhesive interactions include CD62L (L-selectin) and CD11b (Mac-1) on neutrophils and monocytes, which bind to their corresponding counter-receptors to facilitate leukocyte-endothelial cell interactions [5] [8].
