The role of G-protein coupled receptors and associated proteins in receptor tyrosine kinase signal transduction

Semin Cell Dev Biol. 2004 Jun;15(3):309-23. doi: 10.1016/j.semcdb.2003.12.020.

Abstract

It is well established that stimulation of G-protein coupled receptors (GPCRs) can activate signalling from receptor tyrosine kinases by a process termed transactivation. Indeed, in recent years, it has become apparent that transactivation is a general phenomenon that has been demonstrated for many unrelated GPCRs and receptor tyrosine kinases. In this case the GPCR/G-protein participation is up-stream of the receptor tyrosine kinase. Substantial research has addressed these findings but meanwhile another mechanism of cross talk has been slowly emerging. For over a decade, a growing body of evidence has demonstrated that numerous growth factors use G-proteins and attendant signalling molecules such as beta-arrestins that participate down-stream of the receptor tyrosine kinase to signal to effectors, such as p42/p44 MAPK. This review highlights this novel mechanism of cross talk between receptor tyrosine kinases and GPCRs, which is distinct from growth factor receptor transactivation by GPCRs.

Publication types

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

MeSH terms

  • Humans
  • Phosphorylation
  • Receptor Protein-Tyrosine Kinases / metabolism*
  • Receptors, G-Protein-Coupled / metabolism*
  • Signal Transduction*
  • Transcriptional Activation

Substances

  • Receptors, G-Protein-Coupled
  • Receptor Protein-Tyrosine Kinases