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  • Title: Inhibition of cell proliferation and in vitro markers of angiogenesis by indole-3-carbinol, a major indole metabolite present in cruciferous vegetables.
    Author: Wu HT, Lin SH, Chen YH.
    Journal: J Agric Food Chem; 2005 Jun 29; 53(13):5164-9. PubMed ID: 15969492.
    Abstract:
    A variety of studies have suggested a cancer protective role of cruciferous vegetables. In the present study, we investigated the effect of indole-3-carbinol (I3C), a major indole metabolite in cruciferous vegetables, on cell proliferation and in vitro markers of angiogenesis in phorbol myristate acetate (PMA)-stimulated endothelial EA hy926 cells. The results showed that I3C inhibited the growth of EA hy926 cells in a concentration-dependent manner. The capillary-like tube formation by PMA-activated endothelial cells was significantly suppressed by I3C, and such inhibition was associated with decreased vascular endothelial growth factor (VEGF) and increased interleukin-8 (IL-8) secretion, but not with the expression of VEGF receptor-2 protein. Additionally, gelatin zymography analysis indicated that I3C suppressed activities of matrix metalloproteinases-2 (MMP-2) and MMP-9 stimulated by PMA. These results suggest that the dietary I3C may be useful in the treatment of human cancers and angiogenic diseases.
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