Growth Inhibition and Apoptosis Induction of HumanUmbilical Vein Endothelial Cells by Apogossypolone

Aims and Background: Prostate cancer is one of the most common malignant tumors in the male reproductivesystem, which causes the second most cancer deaths of males, and control of angiogenesis in prostate lesions is ofobvious importance. This study assessed the effect of apogossypolone (ApoG2) on proliferation and apoptosis ofhuman umbilical vein endothelial cells (HUVECs). Subjects and
Methods: HUVECs were treated with differentconcentrations of ApoG2. The survival rate of HUVECs were determined by MTT assay. Utrastructural changesof HUVECs were assessed with transmission electron microscopy. Apoptosis in HUVECs was analyzed by flowcytometry and cell migration by Boyden chamber assay. Matrigel assays were used to quantify the development oftube-like networks.
Results: ApoG2 significantly inhibited HUVEC growth even at 24 h (P<0.05). The inhibitoryeffect of ApoG2 is more obvious as the concentration and the culture time increased (P<0.05). These resultsindicate that ApoG2 inhibits the proliferation of HUVECs in a time- and concentration-dependent manner withincrease of the apoptosis rate. Besides, ApoG2 reduced the formation of total pseudotubule length and networkbranches of HUVECs.
Conclusions: The results suggest that ApoG2 inhibits angiogenesis of HUVECs by growthinhibition and apoptosis induction.