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Brusatol Inhibits Proliferation and Invasion of Glioblastoma by Down-Regulating the Expression of ECM1
Zhang'an Dai1, Lin Cai1,2, Yingyu Chen1
1Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Abstract:
Brusatol (Bru), a Chinese herbal extract, has a variety of anti-tumor effects. However, little is known regarding its role and underlying mechanism in glioblastoma cells. Here, we found that Bru could inhibit the proliferation of glioblastoma cells in vivo and in vitro. Besides, it also had an inhibitory effect on human primary glioblastoma cells. RNA-seq analysis indicated that Bru possibly achieved these effects through inhibiting the expression of extracellular matrix protein 1 (ECM1). Down-regulating the expression of ECM1 via transfecting siRNA could weaken the proliferation and invasion of glioblastoma cells and promote the inhibitory effect of Bru treatment. Lentivirus-mediated overexpression of ECM1 could effectively reverse this weakening effect. Our findings indicated that Bru could inhibit the proliferation and invasion of glioblastoma cells by suppressing the expression of ECM1, and Bru might be a novel effective anticancer drug for glioblastoma cells.
Insights
Brusatol, a Chinese herbal extract, inhibits glioblastoma cell growth and invasion by reducing extracellular matrix protein 1 (ECM1) expression. This suggests Brusatol as a potential new anticancer drug for glioblastoma.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Glioblastoma is an aggressive brain tumor with limited treatment options.
- Brusatol (Bru), a Chinese herbal extract, exhibits anti-tumor properties, but its mechanism in glioblastoma remains unclear.
Purpose of the Study:
- To investigate the anti-tumor effects of Brusatol in glioblastoma cells.
- To elucidate the underlying molecular mechanism of Brusatol's action in glioblastoma.
Main Methods:
- In vitro and in vivo studies on glioblastoma cell proliferation and invasion.
- RNA sequencing (RNA-seq) to identify molecular targets.
- siRNA and lentivirus-mediated gene manipulation to confirm target function.
Main Results:
- Brusatol significantly inhibited glioblastoma cell proliferation and invasion.
- RNA-seq identified extracellular matrix protein 1 (ECM1) as a key target of Brusatol.
- Downregulation of ECM1 mimicked Brusatol's effects and enhanced its efficacy, while ECM1 overexpression reversed these effects.
Conclusions:
- Brusatol exerts anti-cancer effects on glioblastoma by suppressing ECM1 expression.
- Brusatol demonstrates potential as a novel therapeutic agent for glioblastoma treatment.
