Transdominant regulation of integrin function: mechanisms of crosstalk

Cell Signal. 2010 Apr;22(4):578-83. doi: 10.1016/j.cellsig.2009.10.009. Epub 2009 Oct 27.

Abstract

Transdominant inhibition of integrins or integrin-integrin crosstalk is an important regulator of integrin ligand binding and subsequent signaling events that control a variety of cell functions in many tissues. Here we discuss examples of integrin crosstalk and detail our current understanding of the molecular mechanisms that are involved in this receptor phenomenon. The cytoskeleton associated protein talin is a key regulator of integrin crosstalk. We describe how the interaction of talin and the cytoplasmic tail of beta integrin is controlled and how competitive inhibitors of this binding play a role in integrin crosstalk. We conclude with a discussion of how integrin crosstalk impacts the interpretation of integrin inhibitor and knockdown studies in both the laboratory and clinical setting.

Publication types

  • Research Support, N.I.H., Extramural
  • Review

MeSH terms

  • Animals
  • Cytoskeleton / metabolism
  • Humans
  • Integrins / antagonists & inhibitors
  • Integrins / genetics
  • Integrins / metabolism*
  • Signal Transduction
  • Talin / metabolism

Substances

  • Integrins
  • Talin