Plasma membrane localization of the GFL receptor components: a nexus for receptor crosstalk

Journal Article

AbstractThe glial cell line-derived neurotrophic factor (GDNF) family ligands (GFLs) comprise a group of four homologous and potent growth factors that includes GDNF, neurturin (NRTN), artemin (ARTN), and persephin (PSPN). The survival, growth, and mitotic activities of the GFLs are conveyed by a single receptor tyrosine kinase, Ret. The GFLs do not bind directly to Ret in order to activate it, and instead bind with high affinity to glycerophosphatidylinositol (GPI)-anchored coreceptors called the GDNF family receptor-αs (GFRαs). Several mechanisms have recently been identified that influence the trafficking of Ret and GFRαs in and out of the plasma membrane, thereby affecting their availability for ligand binding, as well as their levels by targeting to degradative pathways. This review describes these mechanisms and their powerful effects on GFL signaling and function. We also describe the recent discovery that p75 and Ret form a signaling complex, also regulated by plasma membrane shuttling, that either enhances GFL survival signals or p75 pro-apoptotic signals, dependent on the cellular context.

Full Text

Duke Authors

Cited Authors

  • Donnelly, CR; Pierchala, BA

Published Date

  • October 2020

Published In

Volume / Issue

  • 382 / 1

Start / End Page

  • 57 - 64

Published By

Electronic International Standard Serial Number (EISSN)

  • 1432-0878

International Standard Serial Number (ISSN)

  • 0302-766X

Digital Object Identifier (DOI)

  • 10.1007/s00441-020-03235-4

Language

  • en