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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncol+Rep
2017 ; 38
(2
): 755-766
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English Wikipedia
P18 peptide, a functional fragment of pigment epithelial-derived factor, inhibits
angiogenesis in hepatocellular carcinoma via modulating VEGF/VEGFR2 signalling
pathway
#MMPMID28627623
Wang X
; Xiu P
; Wang F
; Zhong J
; Wei H
; Xu Z
; Liu F
; Li J
Oncol Rep
2017[Aug]; 38
(2
): 755-766
PMID28627623
show ga
The P18 peptide is a functional fragment of pigment epithelial-derived factor
(PEDF), which is an endogenic angiogenesis inhibitor. This study sought to
determine the anti-angiogenic bioactivity of the P18 peptide in hepato-cellular
carcinoma (HCC) and to elucidate the underlying mechanism. Xenograft tumour
growth assays demonstrated the P18 peptide suppressed angiogenesis of HCC
in vivo. Wound healing, Transwell and Matrigel-culture assays indicated that the
P18 peptide inhibited the cell migration and tube formation of endothelial cells
(ECs) in vitro. Cell viability and apoptosis assessed by Cell Counting Kit-8
(CCK-8) and ?ow cytometry assays suggested that the P18 peptide inhibited
angiogenesis by inducing apoptosis of ECs. Angiogenesis- and signal
transduction-associated molecules analysed by western blot demonstrated that the
P18 peptide targets vascular endothelial cell growth factor receptor 2 (VEGFR2)
on ECs. In conclusion, by inhibiting the phosphorylation of VEGFR2, the P18
peptide modulates signalling transduction between VEGF/VEGFR2 and suppresses
activation of the PI3K/Akt cascades, leading to an increase in
mitochondrial-mediated apoptosis and anti-angiogenic activity. This bioactivity
of the P18 peptide may represent a novel therapeutic strategy for the treatment
of HCC.