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Published on: June 23, 2020
Pullulan acetate nanoparticles prepared by solvent diffusion method for epirubicin chemotherapy.
Hui-zhu Zhang1, Fu-ping Gao, Ling-rong Liu
1Institute of Biomedical Engineering, Chinese Academy of Medical Science, Peking Union Medical College, The Key Laboratory of Biomedical Material of Tianjin, PO Box 25(204), Tianjin 300192, PR China. huizhu1449@sina.com
Colloids and Surfaces. B, Biointerfaces
|February 3, 2009
Summary
Pullulan acetate nanoparticles were synthesized for controlled drug delivery. These nanoparticles showed enhanced cytotoxicity and cellular uptake of epirubicin, indicating their potential in cancer therapy.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Nanotechnology
- Drug Delivery
Background:
- Pullulan, a natural polysaccharide, offers biocompatibility and biodegradability.
- Acetylation of pullulan modifies its properties for nanoparticle formulation.
- Controlled drug delivery systems are crucial for enhancing therapeutic efficacy and reducing side effects.
Purpose of the Study:
- To synthesize and characterize pullulan acetate (PA) nanoparticles.
- To evaluate the potential of PA nanoparticles for controlled release of epirubicin (EPI).
- To assess the in vitro cytotoxicity and cellular uptake of EPI-loaded PA nanoparticles.
Main Methods:
- Pullulan acetate synthesis via reaction with acetic anhydride.
- Characterization using FT-IR and 1H NMR spectroscopy.
- Preparation of PA nanoparticles using a solvent diffusion method.
- Drug loading, in vitro drug release studies, cytotoxicity assays (KB cells), and confocal laser scanning microscopy (CLSM).
Main Results:
- PA nanoparticles were successfully prepared with particle size dependent on the degree of acetylation.
- Drug entrapment and content of epirubicin increased with higher substitution of PA.
- Epirubicin exhibited biphasic release from nanoparticles: rapid initial release followed by sustained release.
- EPI-loaded PA nanoparticles demonstrated higher cytotoxicity against KB cells compared to free EPI.
- CLSM confirmed cellular internalization and cytoplasmic release of EPI from nanoparticles.
Conclusions:
- Pullulan acetate nanoparticles are effective carriers for controlled epirubicin delivery.
- The degree of acetylation influences nanoparticle properties and drug loading.
- EPI-loaded PA nanoparticles show promising anticancer activity and cellular uptake.
- This system holds potential for improved cancer chemotherapy applications.
