6‐Shogaol, an active constituent of ginger, inhibits breast cancer cell invasion by reducing matrix metalloproteinase‐9 expression via blockade of nuclear factor‐κB activation

6-Shogaol is a potent inhibitor of MDA-MB-231 cell invasion, and the molecular mechanism involves at least in part the down-regulation of MMP-9 transcription by targeting the NF-κB activation cascade. This class of naturally occurring small molecules thus have potential for clinical use as antimetastatic treatments.