MMP9 and breast cancer: Luteolin (8-C-β-d-glucopyranoside), a glycosyl dietary flavonoid, reduces tumor invasion, into 12-O-tetradecanoylphorbol-13-acetate (TPA)-treated MCF-7 breast cancer cells, blocking expression of MMP-9 metalloproteinase and interleukin-8 (IL-8) [95].