β1 integrins: zip codes and signaling relay for blood cells

Sixt, Michael; Bauer, Martina; Lämmermann, Tim; Fässler, Reinhard

doi:10.1016/j.ceb.2006.08.007

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β1 integrins: zip codes and signaling relay for blood cells

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Lämmermann, Tim
Max Planck Institute of Immunobiology and Epigenetics, Max Planck Society;

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Citation

Sixt, M., Bauer, M., Lämmermann, T., & Fässler, R. (2006). β1 integrins: zip codes and signaling relay for blood cells. Current Opinion in Cell Biology, 18, 482-490. doi:10.1016/j.ceb.2006.08.007.

Cite as: https://hdl.handle.net/21.11116/0000-0007-74B5-A

Abstract

At least eight of the twelve known members of the β1 integrin family are expressed on hematopoietic cells. Among these, the VCAM-1 receptor α4β1 has received most attention as a main factor mediating firm adhesion to the endothelium during blood cell extravasation. Therapeutic trials are ongoing into the use of antibodies and small molecule inhibitors to target this interaction and hence obtain anti-inflammatory effects. However, extravasation is only one possible process that is mediated by β1 integrins and there is evidence that they also mediate leukocyte retention and positioning in the tissue, lymphocyte activation and possibly migration within the interstitium. Genetic mouse models where integrins are selectively deleted on blood cells have been used to investigate these functions and further studies will be invaluable to critically evaluate therapeutic trials.