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Evolving View of Membrane Trafficking and Signaling Systems for G Protein-Coupled Receptors

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Endocytosis and Signaling

Part of the book series: Progress in Molecular and Subcellular Biology ((PMSB,volume 57))

Abstract

The G protein-coupled receptor (GPCR) superfamily activates complex signal pathways, yet untangling these signaling systems to understand how specificity in receptor signaling pathways is achieved, has been a challenging question. The roles of membrane trafficking in GPCR signal regulation has undergone a recent paradigm shift, from a mechanism that programs the plasma membrane G protein signaling profile to providing distinct signaling platforms critical for specifying receptor function in vivo. In this chapter, we discuss this evolution of our understanding in the endocytic trafficking systems employed by GPCRs, and how such systems play a deeply integrated role with signaling. We describe recent studies that suggest that the endomembrane compartment can provide a mechanism to both specify, and yet also diversify, GPCR signal transduction. These new evolving models could aid mechanistic understanding of complex disease and provide novel therapeutic avenues.

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Abbreviations

AIP1:

Actin-interacting protein 1

AKT (PKB):

Protein kinase B

ALIX:

ALG-interacting protein X

AMSH:

Associated molecule with the SH3 domain of STAM

AP2:

Adaptor protein 2

APPL1:

Adaptor protein containing PH domain, PTB domain, and leucine zipper motif

ARRDC:

Arresting domain containing

Β1AR, B2AR:

Beta adrenergic receptor 1 or 2

CB1:

Cannabinoid receptor 1

CCP:

Clathrin-coated pit

CXCR4:

Chemokine receptor 4

DOR:

δ-opioid receptor

EE:

Early endosome

EGF:

Epidermal growth factor

EGFR:

EGF receptor

EPB 50:

ERM-binding phosphoprotein 50

ERM:

Ezrin–radixin–moesin

ESCRT:

Endosomal sorting complex required for transport

GAP:

GTPase-activating protein

GASP-1:

GPCR-associated sorting protein-1

GDP:

Guanosine diphosphate

GEF:

GDP exchange factor

GIPC:

Gαi-interacting protein C-terminus

GPCR:

G protein-coupled receptors

GRK:

GPCR kinase

GSK3:

Glycogen synthase kinase 3

GTP:

Guanosine triphosphate

HGF:

Hepatocyte growth factor

Hrs:

HGF-regulated tyrosine kinase substrate

LHR:

Luteinizing hormone receptor

MOR:

μ-opioid receptor

MVB:

Multivesicular body

PAR:

Protease-activated receptor

PDZ:

Post-synaptic density 95/disk large/zonula occludens-1

PI3P:

Phosphatidylinositol-3 phosphate

PKA:

Protein kinase A

PKC:

Protein kinase C

PSD:

Post-synaptic density protein 95

PTHR:

Parathyroid hormone receptor

RGS:

Regulator of G protein signaling

SNX27:

Sorting nexin 27

STAM:

Signal-transducing adaptor protein

STAT:

Signal transducer and activator of transcription

TAB1:

TGF-beta-activated kinase 1-binding protein

TGN:

Trans-Golgi network

TM:

Transmembrane

TSHR:

Thyroid-stimulating hormone receptor

UBD:

Ubiquitin-binding domain

UBPY:

Ubiquitin-specific processing protease Y

V2R:

V2 vasopressin receptor

VASP:

Vasodilator-stimulated phosphoprotein

VEE:

Very early endosome

Vps:

Vacuolar protein sorting

WASH:

Wiskott–Aldrich syndrome protein and SCAR homolog

Wnt:

Wingless-related integration site

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Acknowledgements

This work was supported by grants from the Wellcome Trust (WT085099MA), Genesis Research Trust (P15844) to A.C.H, and an Imperial College London President’s Scholarship to S.S.

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Correspondence to Aylin C. Hanyaloglu .

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Sposini, S., Hanyaloglu, A.C. (2018). Evolving View of Membrane Trafficking and Signaling Systems for G Protein-Coupled Receptors. In: Lamaze, C., Prior, I. (eds) Endocytosis and Signaling. Progress in Molecular and Subcellular Biology, vol 57. Springer, Cham. https://doi.org/10.1007/978-3-319-96704-2_10

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