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2016 ; 7
(39
): 63124-63137
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DDA suppresses angiogenesis and tumor growth of colorectal cancer in vivo through
decreasing VEGFR2 signaling
#MMPMID27517319
Huang SW
; Lien JC
; Kuo SC
; Huang TF
Oncotarget
2016[Sep]; 7
(39
): 63124-63137
PMID27517319
show ga
As angiogenesis is required for tumor growth and metastasis, suppressing
angiogenesis is a promising strategy in limiting tumor progression. Vascular
endothelial growth factor (VEGF)-A, a critical pro-angiogenic factor, has thus
become an attractive target for therapeutic interventions in cancer. In this
study, we explored the underlying mechanisms of a novel anthraquinone derivative
DDA in suppressing angiogenesis. DDA inhibited VEGF-A-induced proliferation,
migration and tube formation of human umbilical vein endothelial cells (HUVECs).
DDA also reduced VEGF-A-induced microvessel sprouting from aortic rings ex vivo
and suppressed neovascularization in vivo. VEGF-A-induced VEGFR1, VEGFR2, FAK,
Akt, ERK1/2 or STAT3 phosphorylation was reduced in the presence of DDA. In
addition, NRP-1 siRNA reduced VEGF-A's enhancing effects in VEGFR2, FAK and Akt
phosphorylation and cell proliferation in HUVECs. DDA disrupted VEGF-A-induced
complex formation between NRP-1 and VEGFR2. Furthermore, systemic administration
of DDA was shown to suppress tumor angiogenesis and growth in in vivo mouse
xenograft models. Taken together, we demonstrated in this study that DDA exhibits
anti-angiogenic properties through suppressing VEGF-A signaling. These
observations also suggest that DDA might be a potential drug candidate for
developing anti-angiogenic agent in the field of cancer and angiogenesis-related
diseases.