[Modified montmorillonite as multifunction gene and drug delivery system]

Area of Science:

• Materials Science and Nanotechnology
• Biomedical Engineering
• Pharmacology

Context:

• Development of advanced drug delivery systems is crucial for improving therapeutic efficacy and reducing side effects.
• Nanoparticles offer unique advantages for drug encapsulation and targeted delivery.
• Montmorillonite and polyethylenimine are explored for their potential in drug carrier systems.

Purpose:

• To synthesize and characterize a novel multifunctional delivery system using polyethylenimine, Doxorubicin, and montmorillonite (PEI-Dox-MTT).
• To evaluate the physicochemical properties, drug release kinetics, DNA binding ability, and cytocompatibility of the developed nanoparticle system.
• To assess the potential of the PEI-Dox-MTT system for gastric mucosa protection.

Summary:

• Doxorubicin was successfully intercalated into montmorillonite, and polyethylenimine was used to form PEI-Dox-MTT nanoparticles (600 nm size, 30 mV zeta-potential).
• Characterization confirmed successful intercalation and surface modification. The system exhibited stable drug release (6-8 x 10^-4 mg/ml over 72h) and significant DNA binding.
• MTT assays showed over 80% cell viability in COS-7 and SKOV3 cell lines, and in vitro studies indicated protective effects on gastric mucosa.

Impact:

• Successful development of a multifunctional PEI-Dox-MTT nanoparticle system.
• Demonstrates potential as a versatile platform for drug delivery with enhanced stability and cytocompatibility.
• Highlights potential therapeutic applications, including anticancer drug delivery and gastrointestinal protection.