Abstract
Lymphocyte adhesiveness is dynamically regulated in response to conditions in the extracellular environment. One mechanism of regulation of integrin adhesion receptors involves a rapid, but transient, increase in integrin function upon T lymphocyte activation. These integrin activating signals can be initiated either via ligation of Ig superfamily members that are coupled to tyrosine kinase cascades, such as the CD3/T cell receptor, CD2, and CD28, or by G proteincoupled receptors for chemokines. Analysis of integrin activation induced by CD3/TCR, CD2 and CD28 suggests a critical role for phosphoinositide 3-OH kinase (PI 3-K). This review summarizes recent insights into PI 3-K-dependent regulation of integrin function in leukocytes, including the mechanisms by which these receptors are coupled to PI 3-K, and potential downstream effectors of PI 3-K that regulate integrin-mediated adhesion in leukocytes.
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Zeil, T., Kivens, W.J., Kellermann, SA. et al. Regulation of integrin function by T cell activation. Immunol Res 20, 127–145 (1999). https://doi.org/10.1007/BF02786469
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DOI: https://doi.org/10.1007/BF02786469