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EnglishThe activation of vascular endothelial growth factor receptor-1 (VEGFR-1, also known as Flt-1) is crucial in many physiological and pathological conditions, like angiogenesis, cancer, inflammation, hematopoiesis, bone marrow precursors/stem cells recruitment in tumor angiogenesis, and metastasis formation. Many recent reports indicate that molecules able to antagonize Flt-1 activity have gained a strong interest in the view of therapeutic approaches. In order to identify new compounds able to interfere in the Flt-1 recognition by VEGFs family members, we have developed a highly sensitive competitive ELISA-based screening to study plant extracts and derivatives. Several fractions of the n-butanol extract of Pteleopsis suberosa leaves and of the chloroform extract of Parinari campestris leaves demonstrated by a bioassay-guided fractionation an evident inhibition of VEGF-A or placental growth factor (PIGF) interaction with Flt-1, with an inhibition over 50% in particular for the VEGF-A/Flt-1 interaction at a concentration of 100 mu g/mL. This activity seems be due to the presence of a combination of compounds acting synergistically.
| Autori interni: | |
| Autori: | S. PONTICELLI; A. BRACA; N. DE TOMMASI; S. DE FALCO |
| Titolo: | Competitive ELISA-based screening of plant derivatives for the inhibition of VEGF family members interaction with vascular endothelial growth factor receptor 1 |
| Anno del prodotto: | 2008 |
| Digital Object Identifier (DOI): | 10.1055/s-2008-1034346 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11568/120992
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