Endocytic trafficking of chemokine receptors. Curr Opin Cell Biol 2014 Apr;27:72-7
Date
04/01/2014Pubmed ID
24680433Pubmed Central ID
PMC4268779DOI
10.1016/j.ceb.2013.11.011Scopus ID
2-s2.0-84890235263 (requires institutional sign-in at Scopus site) 80 CitationsAbstract
Chemokine receptors belong to the super family of G protein-coupled receptors (GPCRs). The cognate ligands for chemokine receptors are small circulating proteins known as chemokines. Upon binding to their cognate chemokines, receptors are rapidly desensitized, internalized onto early endosomes and sorted either into a recycling pathway or degradative pathway. Chemokine receptor trafficking is essential because it limits the magnitude and duration of signaling by removing receptors from the cell surface thereby limiting access to their ligands, but it also delivers bound chemokines to lysosomes for degradation. Receptor sorting into the recycling pathway contributes to resensitization of receptor signaling, whereas sorting into the degradative pathway leads to long-term attenuation of signaling. Recent studies have revealed some key information regarding the molecular determinants mediating chemokine receptor internalization and have shed light on the mechanisms dictating sorting into either the recycling or degradative pathways. Here I discuss our current understanding of the mechanisms mediating chemokine receptor trafficking with a focus primarily on recent findings for the chemokine receptor CXCR4.
Author List
Marchese AAuthor
Adriano Marchese PhD Professor in the Biochemistry department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Amino Acid SequenceAnimals
Cell Membrane
Chemokines
Endocytosis
Endosomal Sorting Complexes Required for Transport
Humans
Ligands
Lysosomes
Molecular Sequence Data
Protein Transport
Receptors, CXCR4
Receptors, Chemokine
Signal Transduction
Ubiquitination
