Docetaxel-loaded redox-sensitive nanoparticles self-assembling from poly(caprolactone) conjugates with...

Area of Science:

• Biomaterials Science
• Nanotechnology
• Polymer Chemistry

Background:

• Developing effective drug delivery systems is crucial for cancer therapy.
• Redox-sensitive nanoparticles offer targeted drug release in tumor microenvironments.
• Poly(caprolactone) and poly(ethylene glycol) are widely used in biomedical applications.

Purpose of the Study:

• To synthesize and characterize novel redox-sensitive nanoparticles (NPs) for drug delivery.
• To evaluate the anti-tumor efficacy of docetaxel-loaded NPs against breast cancer cells.
• To assess the biocompatibility and cellular uptake of the developed NPs.

Main Methods:

• Synthesis of DPSP polymer using ring-opening polymerization (ROP) and RAFT polymerization.
• Fabrication of DPSP NPs via solvent-evaporation method.
• In vitro evaluation of anti-tumor activity using MTT assay and cellular uptake studies.
• In vivo assessment of blood compatibility and bio-security.

Main Results:

• DPSP polymer synthesis confirmed by 1H NMR and FTIR.
• DPSP NPs exhibited a circular shape with an average diameter of 107.8 nm.
• NPs demonstrated redox-responsive behavior and enhanced cellular uptake by 4T1 cells.
• DTX-loaded DPSP NPs showed improved in vitro anti-tumor activity compared to free DTX.
• Animal studies confirmed excellent blood compatibility and bio-security.

Conclusions:

• Novel redox-sensitive DPSP NPs were successfully fabricated.
• The developed NPs exhibit promising characteristics for targeted drug delivery in cancer therapy.
• The enhanced anti-tumor activity and biocompatibility highlight the therapeutic potential of these nanoparticles.