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• W1964749163 abstract "We have previously demonstrated that alternagin-C (ALT-C), a disintegrin-like protein from the venom of the Brazilian snake Bothrops alternatus, induces human vascular endothelial cell (HUVEC) proliferation by up-regulating the expression of vascular endothelial growth factor (VEGF). Here, we show that ALT-C is also able to induce in vivo angiogenesis using the model of matrigel plug in nude mice. Fibroblast growth factor (FGF) alone or supplemented with ALT-C was mixed with melted matrigel and subcutaneously injected in nude mice. After two weeks, the matrigel plugs were removed and analyzed to verify endothelial cell migration and new vessel formation. ALT-C (1 and 10 ng) strongly induced endothelial cell migration as well as the formation of new vessels. However, in higher concentrations, ALT-C strongly inhibited angiogenesis. In low concentrations (1 and 10 nM), ALT-C also up-regulates the expression of VEGF receptor 2 (VEGFR2, KDR) mostly after 48 h, but it did not affect VEGFR1 (Ftl-1) in HUVEC cells as demonstrated by real-time PCR analysis. However, in higher concentrations (100 nM) the expression of both receptors is down-regulated. A peptide derived from ALT-C primary structure also affects HUVEC proliferation in vitro and angiogenesis in vivo. In conclusion, the present study shows for the first time the in vivo angiogenesis induced by a disintegrin-like molecule and the modulation of VEGFRs as well." @default.
• W1964749163 created "2016-06-24" @default.
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• W1964749163 date "2007-05-01" @default.
• W1964749163 modified "2023-10-16" @default.
• W1964749163 title "Modulation of in vitro and in vivo angiogenesis by alternagin-C, a disintegrin-like protein from Bothrops alternatus snake venom and by a peptide derived from its sequence" @default.
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• W1964749163 doi "https://doi.org/10.1016/j.abb.2007.02.021" @default.
• W1964749163 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17428438" @default.
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