Anticancer activity of ursolic acid on human ovarian cancer cells via ROS and MMP mediated apoptosis, cell cycle arrest and downregulation of PI3K/AKT pathway.

作者：Wumei Lin, Haiyan Ye · 发表于：PubMed · 年份：2021 · 被引用次数：26 · 研究领域：Natural product bioactivities and synthesis、Biological Activity of Diterpenoids and Biflavonoids、Flavonoids in Medical Research

PURPOSE: Ovarian cancer (OC) is perhaps the most difficult problem in gynaecologic oncology; in particular the drug-resistant ovarian cancer remains a challenge for the clinicians. Therefore there is a pressing need for novel and effective chemotherapeutic agents against OC. The main objective of the current research work was to study the anticancer effects of a naturally occurring triterpene acid, ursolic acid, against SKOV-3 OC cells. Its effects on reactive oxygen species (ROS)-mediated apoptosis were also studied along with cell cycle phase distribution and PI3K/AKT signalling pathway. METHODS: Cell proliferation was checked by CCK8 cell viability assay. Apoptosis-related studies were examined by fluorescent microscopy using acridine orange (AO)/ethidium bromide (EB) and DAPI staining as well as flow cytometry using annexin V/propidium iodide (PI) assay. Further, western blot assay was used to study effects of ursolic acid on the apoptosis-related protein expressions including Bax, Bcl-2 as well as PI3K/AKT signalling pathway. Effects on cell cycle were examined by flow cytometry while effects on ROS production were evaluated by fluorescent microscopy. RESULTS: Ursolic acid caused significant reduction in the viability of the SKOV-3 ovarian carcinoma cells in a dose-dependent manner, exhibiting an IC50 of 35 µM in cancer cells and IC50 of 75 µM in normal cell lines (normal ovarian surface epithelial (OSE). Ursolic acid inhibited the viability of cancer cells via induction...