Lancemaside A Isolated from the Root of Inhibits Ovarian Cancer Cell Invasion via the Reactive Oxygen Species (ROS)-Mediated p38 Pathway.

roots have been widely used in Korean cuisine and traditional medicine. This study aimed to investigate the antimetastatic effects of lancemaside A, a major triterpenoid saponin, isolated from the roots of , in human ovarian cancer cells. Lancemaside A significantly suppressed the migration and invasion and the expression of matrix metalloproteinases (MMPs)-2 and -9 in ovarian cancer A2780 and SKOV3 cells. Treatment with lancemaside A generated reactive oxygen species (ROS) in ovarian cancer cells. However, treatment with anti-oxidant N-acetyl-L-cysteine (NAC) significantly negated the anti-invasive activity of lancemaside A. Additionally, lancemaside A activated p38 MAP kinase, which is mediated by ROS generation. This is the first study, to our knowledge, to reveal that lancemaside A isolated from the roots of exerts antimetastatic activity through inhibition of MMP expression and cancer cell invasion via activation of the ROS-mediated p38 pathway.