Abstract | BACKGROUND: METHODOLOGY/PRINCIPAL FINDINGS: In the present work, we further investigated the biological actions of pseudopeptide HB-19 on HUVECs. In a previous work, we have shown that HB-19 inhibits the in vivo angiogenesis on the chicken embryo CAM assay. We now provide evidence that HB-19 inhibits the in vitro adhesion, migration and proliferation of HUVECs without inducing their apoptosis. The above biological actions seem to be regulated by SRC, ERK1/2, AKT and FAK kinases as we found that HB-19 inhibits their activation in HUVECs. Matrix metalloproteinases ( MMPs) play crucial roles in tumor growth and angiogenesis, so we investigated the effect of HB-19 on the expression of MMP-2 and we found that HB-19 downregulates MMP-2 in HUVECs. Finally, down regulation of nucleolin using siRNA confirmed the implication of nucleolin in the biological actions of these peptides. CONCLUSIONS/SIGNIFICANCE: Taken together, these results indicate that HB-19 could constitute an interesting tool for tumor therapy strategy, targeting cell surface nucleolin.
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Authors | Charalampos Birmpas, Jean Paul Briand, Josẻ Courty, Panagiotis Katsoris |
Journal | Vascular cell
(Vasc Cell)
Vol. 4
Issue 1
Pg. 21
(Dec 24 2012)
ISSN: 2045-824X [Electronic] England |
PMID | 23265284
(Publication Type: Journal Article)
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