8-(3-oxo-4,5,6-trihydroxy-3h-xanthen-9-yl)-1-naphthoic acid inhibits MAPK phosphorylation in endothelial cells induced by VEGF and bFGF.

• DOI: 10.3892/ijmm.2.2.211
• Publication Date: 2014-03-10T03:33:30Z
• Authors: I Uno; T Yamano; K Shigeta; K Takigawa; T Kato; T Isohara; K Igarashi
• Keywords: 0301 basic medicine; 03 medical and health sciences; 3. Good health

Angiogenesis is regulated by various factors. In particular, VEGF and basic FGF are of much importance. We found that 8-(3-oxo-4,5,6-trihydroxy-3h-xanthen-9-yl)-1-naphthoic acid inhibited the binding of VEGF to KDR/Flk-1 (VEGF receptor-2) or Flt-1 (VEGF receptor-1) and that it inhibited the MAPK phosphorylation in HUVEC induced by VEGF or basic FGF but not by EGF. 8-(3-oxo-4,5,6-trihydroxy-3h-xanthen-9-yl)-1-naphthoic acid might be used as an inhibitor of VEGF and basic FGF signal transduction.