Ophiopogonin D (OJV-VI, Deacetylophiopogonin C) is a steroidal glycoside isolated from Chinese herb Radix ophiopogonis and shows anti-tumor property. Ophiopogonin D could suppress TGF-β1-mediated metastatic behavior of MDA-MB-231 cells by regulating ITGB1/FAK/Src/AKT/β-catenin/MMP-9 signaling axis. Ophiopogonin D attenuates PM2.5-induced inflammation via suppressing the AMPK/NF-κB pathway in mouse pulmonary epithelial cells.