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2016 ; 11
(6
): e0157137
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MACC-1 Promotes Endothelium-Dependent Angiogenesis in Gastric Cancer by
Activating TWIST1/VEGF-A Signal Pathway
#MMPMID27280289
Wang L
; Zhou R
; Zhao Y
; Dong S
; Zhang J
; Luo Y
; Huang N
; Shi M
; Bin J
; Liao Y
; Liao W
PLoS One
2016[]; 11
(6
): e0157137
PMID27280289
show ga
Endothelium-dependent angiogenesis is thought to be a crucial step in cancer
progression. We previously reported that metastasis-associated in colon cancer-1
(MACC1) contributed to the vasculogenic mimicry in gastric cancer (GC), but it
remains unknown whether MACC1 promotes endothelium-dependent angiogenesis of GC
and whether TWIST1 is involved in this process. In the present study, we detected
MACC1 expression and microvessel density (MVD) by immunohistochemistry in 159
patients with stage I-III GC, and investigated the role of TWIST1 and vascular
endothelial growth factor A (VEGF-A) in MACC1-induced endothelium-dependent
angiogenesis using nude mice with GC xenografts, and human umbilical vein
endothelial cells (HUVECs) that were co-cultured with conditioned media from
overexpression and interference MACC1 GC cells. We found that MACC1 expression
was positively correlated with an increased MVD and tumor recurrence in GC
patients. In GC xenograft models, MACC1 elevated MVD and upregulated the
expression of VEGF-A as well as accelerated tumor growth. In addition, MACC1
obviously increased the expression of TWIST1 and induced tube-like formation of
HUVECs, whereas attenuation of TWIST1 suppressed the protein expression of VEGF-A
and repealed the effect of MACC1 on tube formation. Our findings shed light on
the function of MACC1 in endothelium-dependent angiogenesis of GC and suggest
potential prognostic and therapeutic value.