Synthesis of a Bioactive Composition of Chitosan-Selenium Nanoparticles

Area of Science:

• Biomaterials Science
• Nanotechnology
• Pharmacology

Background:

• Chitosan is a versatile biopolymer with potential applications in drug delivery.
• Selenium nanoparticles (SeNPs) possess unique biological activities.
• Developing novel biocompatible nanomaterials is crucial for therapeutic advancements.

Purpose of the Study:

• To develop and characterize a novel composition of chitosan-selenium nanoparticles (chitosan-SeNPs).
• To evaluate the biocompatibility of chitosan-SeNPs using fibroblast cell cultures.
• To investigate the effect of chitosan-SeNPs on oxidative processes in vivo.

Main Methods:

• Synthesis and characterization of chitosan-SeNPs, including size distribution analysis.
• Biocompatibility assessment using hTERT BJ-5ta fibroblast cell line culturing on sample films.
• In vivo study measuring the effect on free-radical oxidation in animal blood.

Main Results:

• Chitosan-SeNPs exhibited a bimodal size distribution (2-3 nm and ~37 nm).
• High biocompatibility of the chitosan-SeNP composition was demonstrated with fibroblast cell lines.
• The composition effectively reduced free-radical oxidation activity in animal blood, indicating a corrective effect on oxidative stress.

Conclusions:

• Chitosan-SeNPs are a biocompatible nanomaterial with significant antioxidant properties.
• The amino and hydroxyl groups of chitosan are key complexation centers for SeNPs.
• This chitosan-SeNP complex shows promise for the development of new antioxidant and adaptogenic pharmaceutical agents.