G-Protein Coupled Receptor 124 (GPR124) in Endothelial Cells Regulates Vascular Endothelial Growth Factor (VEGF)-Induced Tumor Angiogenesis

ISSN: 1875-5666 (Online)
ISSN: 1566-5240 (Print)


Volume 14, 10 Issues, 2014


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Current Molecular Medicine

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David W. Li
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University of Nebraska Medical Center
Omaha, NE
USA


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G-Protein Coupled Receptor 124 (GPR124) in Endothelial Cells Regulates Vascular Endothelial Growth Factor (VEGF)-Induced Tumor Angiogenesis

Author(s): Y. Wang, S.-G. Cho, X. Wu, S. Siwko and M. Liu

Affiliation: Institute of Bioscience and Technology, Texas A&M University Health Science Center, 2121 West Holcombe Blvd., Houston, Texas 77030, USA.

Abstract

G protein-coupled receptor 124 (GPR124; also called tumor endothelial marker 5, TEM5) is highly expressed in tumor vasculature. While recent studies have revealed a role in vasculogenesis, evidence for GPR124 function in tumor angiogenesis is lacking. Here, we demonstrate that GPR124 is required for VEGFinduced tumor angiogenesis. GPR124 silencing in human endothelial cells inhibited mouse xenograft tumor angiogenic vessel formation and tumor growth. GPR124 regulated VEGF-induced tumor angiogenic processes in vitro including cell-cell interaction, permeability, migration, invasion, and tube formation. Therefore, GPR124 plays a key role in VEGF-induced tumor angiogenesis.

Keywords: Angiogenesis, cancer, G protein coupled receptors (GPCR), tumor, vascular biology, vascular endothelial growth factor (VEGF).

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Article Details

Volume: 14
Issue Number: 4
First Page: 543
Last Page: 554
Page Count: 12
DOI: 10.2174/1566524014666140414205943
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