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2014 ; 289
(50
): 34871-85
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GPR126 protein regulates developmental and pathological angiogenesis through
modulation of VEGFR2 receptor signaling
#MMPMID25217645
Cui H
; Wang Y
; Huang H
; Yu W
; Bai M
; Zhang L
; Bryan BA
; Wang Y
; Luo J
; Li D
; Ma Y
; Liu M
J Biol Chem
2014[Dec]; 289
(50
): 34871-85
PMID25217645
show ga
Angiogenesis, the formation of new blood vessels from pre-existing ones, is
essential for development, wound healing, and tumor progression. The VEGF pathway
plays irreplaceable roles during angiogenesis, but how other signals cross-talk
with and modulate VEGF cascades is not clearly elucidated. Here, we identified
that Gpr126, an endothelial cell-enriched gene, plays an important role in
angiogenesis by regulating endothelial cell proliferation, migration, and tube
formation. Knockdown of Gpr126 in the mouse retina resulted in the inhibition of
hypoxia-induced angiogenesis. Interference of Gpr126 expression in zebrafish
embryos led to defects in intersegmental vessel formation. Finally, we identified
that GPR126 regulated the expression of VEGFR2 by targeting STAT5 and GATA2
through the cAMP-PKA-cAMP-response element-binding protein signaling pathway
during angiogenesis. Our findings illustrate that GPR126 modulates both
physiological and pathological angiogenesis through VEGF signaling, providing a
potential target for the treatment of angiogenesis-related diseases.