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Casticin induces human glioma cell death through apoptosis and mitotic arrest
Enyu Liu1, Yongqin Kuang, Weiqi He
1Department of Neurosurgery, General Hospital of People's Liberation Army Chengdu Military Region, Chengdu Command, Chengdu, China.
Background:
Malignant gliomas are the leading cause of morbidity and mortality in brain and central nervous system tumors. Recently, casticin has drawn wide attention to its critical role in tumor progression. However, the effect of casticin on glioma remains undefined.
Methods:
Following treatment with casticin, cell viability, apoptosis, and cell cycle arrest were examined in U251 glioma cells. Additionally, the involved molecular mechanism was assessed by western blotting and flow cytometry.
Results:
Casticin triggered an obvious dose-dependent decrease in U251, U87 and U373 glioma cell viability, and the growth inhibitory effect of casticin was correlated with cell cycle arrest and cell apoptosis. Further mechanistic analysis indicated that casticin induced G2/M phase arrest by attenuating the polymerization of tubulin. Furthermore, striking apoptosis was also confirmed, accompanied by the up-regulation of caspase-3, p53 and proapoptotic protein Bax. These effects were absent when the caspase inhibitor z-VAD-fmk or p53 inhibitor PFTα were applied, suggesting that casticin could trigger cell apoptosis in a caspase-3 and p53-dependent manner.
Conclusion:
These findings provide a prominent insight into how casticin abrogates the pathogenesis of glioma, and support its potential clinical prospect for further development of anti-brain cancer therapy.
Insights
Casticin effectively inhibits glioma cell growth by inducing cell cycle arrest and apoptosis. This natural compound shows promise as a potential therapeutic agent for brain cancer.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Malignant gliomas are a primary cause of mortality from brain tumors.
- Casticin's role in tumor progression is recognized, but its specific effects on glioma were previously unknown.
Purpose of the Study:
- To investigate the anti-glioma effects of casticin.
- To elucidate the molecular mechanisms underlying casticin's action in glioma cells.
Main Methods:
- U251, U87, and U373 glioma cells were treated with casticin.
- Cell viability, apoptosis, and cell cycle were analyzed.
- Western blotting and flow cytometry were used to assess molecular changes.
Main Results:
- Casticin demonstrated a dose-dependent inhibition of glioma cell viability.
- Casticin induced G2/M phase cell cycle arrest by inhibiting tubulin polymerization.
- Apoptosis was triggered in a caspase-3 and p53-dependent manner, evidenced by increased caspase-3, p53, and Bax expression.
Conclusions:
- Casticin effectively abrogates glioma pathogenesis.
- Casticin exhibits potential as a therapeutic agent for brain cancer treatment.
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