Borrelidin is an Angiogenesis Inhibitor; Disruption of Angiogenic Capillary Vessels in a Rat Aorta Matrix Culture Model

Abstract

Borrelidin, an antibiotic from Streptomyces rochei, was found to be an angiogenesis inhibitor in a rat aorta matrix culture model which forms capillary vessels in vitro. Borrelidin strongly inhibited capillary tube formation with a 50%-inhibitory concentration value of O.SnM, and decreased the number of capillary tubes within 24 hours when added after maturation of tube formation. Borrelidin remarkably disrupted capillary tubes in a dose-dependent manner, by inducing apoptosis of the tube-forming cells.