Delivering etoposide to the brain using catanionic solid lipid nanoparticles with surface 5-HT-moduline

Area of Science:

• Nanotechnology
• Neuroscience
• Pharmacology

Background:

• Brain-targeted drug delivery is crucial for treating central nervous system (CNS) tumors.
• Etoposide (ETP) is a chemotherapy drug with potential against brain malignancies.
• The blood-brain barrier (BBB) presents a significant obstacle for drug delivery to the brain.

Purpose of the Study:

• To investigate the transport of etoposide (ETP) across the BBB using catanionic solid lipid nanoparticles (CASLNs).
• To evaluate the effect of 5-HT-moduline grafting on CASLNs for enhanced brain delivery.
• To assess the safety and efficacy of these modified nanoparticles for brain tumor chemotherapy.

Main Methods:

• Preparation of ETP-encapsulated CASLNs (ETP-CASLNs) via catanionic microemulsion.
• Grafting of 5-HT-moduline onto ETP-CASLNs.
• Assessment of ETP entrapment efficiency and nanoparticle stability.
• Evaluation of nanoparticle interaction with human brain-microvascular endothelial cells (HBMECs) and BBB permeability.

Main Results:

• Maximal ETP entrapment efficiency achieved at 0.75 mM catanionic surfactants.
• Increased catanionic surfactant concentration decreased HBMEC viability.
• 5-HT-moduline modification enhanced ETP and propidium iodide permeability across the BBB.
• Surface-modified nanoparticles demonstrated potential for preclinical anti-brain tumor chemotherapy.

Conclusions:

• Surface-modified 5-HT-moduline/ETP-CASLNs show potential as drug delivery carriers for brain tumors.
• The study highlights the feasibility of using CASLNs for targeted ETP delivery across the BBB.
• Further preclinical trials are warranted to validate the therapeutic efficacy.