Integrin-dependent phagocytosis: spreading from microadhesion to new concepts

J Cell Sci. 2008 Jun 1;121(11):1773-83. doi: 10.1242/jcs.018036.

Abstract

By linking actin dynamics to extracellular components, integrins are involved in a wide range of cellular processes that are associated with or require cytoskeletal remodelling and cell-shape changes. One such function is integrin-dependent phagocytosis, a process that several integrins are capable of mediating and that allows the binding and clearance of particles. Integrin-dependent phagocytosis is involved in a wide range of physiological processes, from the clearance of microorganisms and apoptotic-cell removal to extracellular-matrix remodelling. Integrin signalling is also exploited by microbial pathogens for entry into host cells. Far from being a particular property of specific integrins and specialised cells, integrin-dependent uptake is emerging as a general, intrinsic ability of most integrins that is associated with their capacity to signal to the actin cytoskeleton. Integrin-mediated phagocytosis can therefore be used as a robust model in which to study integrin regulation and signalling.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Actins / metabolism*
  • Animals
  • Bacterial Adhesion / physiology
  • Cell Adhesion / physiology
  • Cell Membrane / metabolism
  • Cytoskeleton / metabolism*
  • Humans
  • Integrins / metabolism*
  • Phagocytosis / physiology*
  • Protein Binding / physiology
  • Signal Transduction / physiology

Substances

  • Actins
  • Integrins