Stimuli-responsive spin crossover nanoparticles for drug delivery and DNA-binding studies

Area of Science:

• Materials Science
• Nanotechnology
• Biochemistry

Background:

• Spin-crossover (SCO) nanoparticles offer unique properties for drug delivery applications.
• Aminated silica nanoparticles (AmNPs) provide a versatile platform for drug conjugation.

Purpose of the Study:

• To evaluate aminated silica hybrid nanoparticles coupled with (S)-naproxen (NAP) as potential drug nanocarriers.
• To investigate the pH-dependent drug release profile of these nanocarriers.
• To assess the interaction and binding affinities of the nanoparticles with DNA and serum albumins.

Main Methods:

• Drug release experiments were conducted at various pH values.
• DNA- and albumin-binding studies utilized diverse biophysical techniques.
• Characterization of nanoparticle-drug complex formation and stability.

Main Results:

• The aminated silica hybrid nanoparticles demonstrated controlled release of (S)-naproxen.
• Significant interactions were observed between the nanoparticles and both calf-thymus DNA and serum albumins.
• Binding constants were determined, indicating the affinity of the nanoparticles for biological macromolecules.

Conclusions:

• Aminated silica hybrid nanoparticles coupled with (S)-naproxen show promise as drug nanocarriers.
• The nanoparticles exhibit pH-responsive drug release capabilities.
• Understanding nanoparticle-biomacromolecule interactions is crucial for optimizing drug delivery efficacy and safety.