SCL extract inhibits multidrug resistance in triple-negative breast cancer cells by suppressing Keap1/Nrf2 pathway, increasing ROS levels, and inducing apoptosis. Promising for overcoming drug resistance in breast cancer.
This study investigated the impact of Stellera chamaejasme extract (SCE) on multidrug resistance in breast cancer. They used two cell lines, one sensitive to chemotherapy and one resistant. The results showed that SCE significantly inhibited the proliferation of both cell lines and reduced drug resistance. Moreover, SCE induced apoptosis in the cells, as evidenced by nuclear changes and increased apoptotic cell proportions. Additionally, SCE promoted autophagy and altered the expression of proteins related to apoptosis and cell cycle regulation. These findings suggest that SCE may be effective in combating drug resistance in breast cancer cells.
Researchers identified 20 sesquiterpenoids from the roots of Stellera chamaejasme, including six that showed neuroprotective effects on PC-12 cells damaged by sodium nitroprusside. One of these compounds, stelleraguaianone B, was found to reduce oxidative stress and promote mRNA expression of antioxidant enzymes. The study provides insights into potential natural compounds for treating neurological disorders caused by oxidative stress.
Researchers have isolated nine sesquiterpenoids from Stellera chamaejasme roots, five of which are previously undescribed. These were tested for their ability to inhibit NO production in BV2 cells induced by LPS. Stellerasespene A was found to have higher inhibitory activity than minocycline, a positive control, indicating its potential use as an anti-inflammatory agent.