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2017 ; 8
(49
): 85969-85983
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SCO-spondin oligopeptide inhibits angiogenesis in glioblastoma
#MMPMID29156770
Bibes R
; Gobron S
; Vincent F
; Mélin C
; Vedrenne N
; Perraud A
; Labrousse F
; Jauberteau MO
; Lalloué F
Oncotarget
2017[Oct]; 8
(49
): 85969-85983
PMID29156770
show ga
Angiogenesis plays a critical role in glioblastoma growth and progression. We
therefore aimed at evaluating the anti-angiogenic properties of an oligopeptide
originating from SCO-spondin (NX) on a model of human glioblastoma. To this end,
we studied the impact of NX treatment on human brain endothelial cells (HBMECs)
alone or co-cultured with glioblastoma cells (U87-MG) on apoptosis,
proliferation, migration and release of angiogenic factors. We further
investigated the anti-angiogenic potential of NX on human glioblastoma cells
grown on chorio-allantoic membrane (CAM) or in glioblastoma xenografts. The
results of our experiments showed that NX treatment impaired the microvascular
network and induced a decrease in cell proliferation, vascularization and tumor
growth in the CAM model as well as in xenotransplants. Interestingly, our in
vitro experiments showed that NX impairs HBMECs migration but also regulates the
release of angiogenic factors from U87-MG. These results are confirmed by the
profiling of NX-treated U87-MG grown on CAM that highlighted modifications of
several genes involved in angiogenesis. In conclusion, NX inhibits tumorigenesis
by impairing the ability of glioblastoma cells to induce angiogenesis and by
inhibiting endothelial cell migration. This molecule might therefore be an
interesting candidate for future cancer therapies.