Suppressive Effects of Ursolic Acid on Human Endometriotic Stromal Cells Survival
- 17 September 2019
- journal article
- research article
- Published by S. Karger AG in Gynecologic and Obstetric Investigation
- Vol. 85 (1), 72-81
- https://doi.org/10.1159/000502258
Abstract
Background/Aims: The identification of new compound candidates for endometriosis treatment is needed. Cyclooxygenase-2 (COX-2) is considered a crucial target to control the progress and recurrence of endometriosis. Here, we identified ursolic acid (UA) as a natural inhibitor of COX-2 and investigated its effects on endometriosis progression. Methods: Primary human endometriotic stromal cells isolated from patients with endometriosis were exposed to UA at concentrations of 15, 30, 45, and 60 μM. 3-(4,5-Dimethylthiaziazol-2-yl)-2,5-diphenyl tetrazolium bromide assays, 5′-bromo-2’-deoxy-uridine assays, and Caspase-3 activity measurements were performed to detect cell growth and apoptosis. Enzyme-linked immunosorbent assays were used to detect COX-2 and vascular endothelial growth factor (VEGF) protein expression and prostaglandin E2 (PGE2) levels. Capillary-tubule formation assays using human umbilical vein endothelial cells were also carried out to determine angiogenesis. Results: UA significantly decreased cell viability, inhibited proliferation, and increased caspase-3 activity in a dose-dependent manner. COX-2 protein expression and the subsequent PGE2 production were both reduced by UA. Meanwhile, UA exposure decreased VEGF secretion in the stromal cells and the capillary-tubule formation assay confirmed the inhibitory effect of UA on angiogenesis. Furthermore, UA increased the phosphorylation of c-Jun N-terminal kinase and p38. Conclusions: Our data suggest that UA plays a role as a natural inhibitor of COX-2 to control the survival of human endometriotic stromal cells by inhibiting proliferation and angiogenesis and promoting apoptosis.Keywords
This publication has 35 references indexed in Scilit:
- Ursolic acid inhibits growth and induces apoptosis in gemcitabine-resistant human pancreatic cancer via the JNK and PI3K/Akt/NF-κB pathwaysOncology Reports, 2012
- A selective cyclooxygenase-2 inhibitor suppresses the growth of endometriosis with an antiangiogenic effect in a rat modelFertility and Sterility, 2010
- High prevalence of endometriosis in infertile women with normal ovulation and normospermic partnersFertility and Sterility, 2010
- Trypanocidal activity and acute toxicity assessment of triterpene acidsZeitschrift für Parasitenkunde, 2010
- Cyclooxygenase-2 overexpression in ovarian endometriomas is associated with higher risk of recurrenceFertility and Sterility, 2009
- Recurrence of endometriosis and its controlHuman Reproduction Update, 2009
- Regression of endometrial explants in rats treated with the cyclooxygenase-2 inhibitor rofecoxibFertility and Sterility, 2004
- Mitogen-activated protein kinases in apoptosis regulationOncogene, 2004
- Growth inhibition of breast epithelial cells by celecoxib is associated with upregulation of insulin-like growth factor binding protein-3 expressionBiochemical and Biophysical Research Communications, 2004
- COX‐2 independent induction of cell cycle arrest and apoptosis in colon cancer cells by the selective COX‐2 inhibitor celecoxibThe FASEB Journal, 2001