Multi-Target Approach for Drug-Resistant Epilepsy: An In Silico Exploration of Promising Phytochemicals.

Area of Science:

• Neuroscience
• Pharmacology
• Computational Chemistry

Background:

• The NLRP3 inflammasome pathway contributes to epilepsy progression into drug-resistant epilepsy (DRE).
• NLRP3 activation leads to overactivation of ABC transporters, causing efflux of anti-seizure medications and treatment failure.

Purpose of the Study:

• To identify novel molecules that can mitigate neuroinflammation and enhance anti-seizure medication efficacy.
• To investigate the potential of procyanidin as a therapeutic agent against DRE.

Main Methods:

• Molecular docking studies were performed to evaluate procyanidin binding affinities with NLRP3, caspase-1, and ABC proteins.
• Molecular dynamics (MD) simulations were conducted over 100 ns to assess the stability of procyanidin-protein complexes.
• Binding free energy (ΔG) calculations and toxicity predictions were performed.

Main Results:

• Procyanidin exhibited strong binding affinities for NLRP3, caspase-1, and ABC proteins.
• MD simulations indicated stable interactions between procyanidin and ABC and caspase proteins (RMSD < 5 Å), and with NLRP3 (RMSD < 2.5 Å).
• Procyanidin demonstrated favorable binding free energy values and predicted good plasma-protein binding with low acute toxicity.

Conclusions:

• Procyanidin is a promising hit molecule for halting neuroinflammation in DRE.
• Procyanidin has the potential to potentiate the action of anti-seizure medications by targeting the NLRP3 inflammasome pathway and ABC transporters.