Contribution of Prostaglandin E2-Induced Neuronal Excitation to Drug Resistance in Glioblastoma Countered by a Novel Blood-Brain Barrier Crossing Celecoxib Derivative
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View abstract on PubMed
Summary
This summary is machine-generated.Prostaglandin E2 (PGE2) drives glioblastoma recurrence by exciting neurons, increasing chemoresistance. A novel compound, compound 11, inhibits PGE2 signaling, reducing tumor growth and improving survival.
Area Of Science
- Neuroscience
- Oncology
- Pharmacology
Background
- Glioblastoma (GBM) is an aggressive brain tumor with poor outcomes due to recurrence and therapy resistance.
- Neuronal activity in the tumor microenvironment is increasingly recognized as a factor in GBM progression and chemoresistance.
Purpose Of The Study
- To investigate the role of prostaglandin E2 (PGE2) in mediating neuronal excitation and its contribution to GBM chemoresistance.
- To develop and evaluate a novel therapeutic agent targeting PGE2 signaling for GBM treatment.
Main Methods
- Investigated PGE2's mechanism of action on neuronal activity via the EP1 receptor, calcium influx, and CaMKII phosphorylation.
- Utilized co-culture experiments to demonstrate neuron-tumor interactions and their effect on GBM chemoresistance.
- Developed and tested compound 11, a blood-brain barrier-permeable celecoxib derivative, in preclinical GBM models.
Main Results
- PGE2 activates neurons, enhancing synaptic plasticity and upregulating synaptic proteins.
- Neuronal excitation led to increased glutamine and asparagine, correlating with heightened GBM chemoresistance.
- Compound 11 effectively inhibited PGE2 signaling, reduced GBM growth, decreased neuronal excitation, and improved survival in models.
Conclusions
- PGE2-induced neuronal excitation is a critical mechanism driving drug resistance and recurrence in glioblastoma.
- Compound 11 represents a promising therapeutic strategy to overcome PGE2-mediated chemoresistance and improve GBM patient outcomes.
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