In vitro activity: Fumagillin selectively inhibits the growth of a Δmap1 strain but not a wild-type or a Δmap2 S. cerevisiae strain missing MetAP-2. In budding yeast cells, as a potent inhibitor of angiogenesis, Fumagillin not only reverses the growth inhibitory activity of Vpr, but also inhibits Vpr-dependent viral gene expression upon the infection of human macrophages. Though the toxicity of fumagillin has limited its use for human applications, the analogues using structure-activity relationships relating to its angiogenesis properties may be further explored in the treatment of angiogenesis-dependent diseases.