Relationships Between the Structural Properties of Flavonoids and their Inhibitory Activities Against Matrix Metallopeptidase 9

Targeting of MMP-9 could be a useful approach for anticancer therapy. The inhibitory activities of 23 flavonoids on tumor necrosis factors alpha (TNFα)-induced matrix metalloproteinases 9 (MMP-9) gene expression were analyzed quantitatively. To elucidate the relationships between the structural properties of flavonoids and their inhibitory activities, comparative molecular field analysis and comparative molecular similarity indices analysis were carried out. The structural conditions required for high inhibitory activity towards TNFα-induced MMP-9 gene expression were derived. In addition, for spiraeoside, which showed the best activity among the test compounds, reverse transcription polymerase chain reaction (PCR), real-time PCR analysis, and promoter-reporter assay were performed. Spiraeoside could be a lead compound for the anticancer agents.