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Versatile redox-sensitive pullulan nanoparticles for enhanced liver targeting and efficient cancer therapy
Liping Huang1, Birendra Chaurasiya2, Dawei Wu3
1Center for Research Development and Evaluation of Pharmaceutical Excipients and Generic Drugs, China Pharmaceutical University, Nanjing, China; State Key Laboratory of Nature Medicines, Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, China; National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
Nanomedicine : Nanotechnology, Biology, and Medicine
|February 8, 2018
Summary
This study developed dual-targeted nanoparticles for liver cancer therapy. These nanoparticles effectively delivered drugs to tumors, showing strong anti-tumor effects with reduced toxicity.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Drug Delivery
Background:
- Liver cancer therapy requires targeted drug delivery to enhance efficacy and minimize side effects.
- Existing therapies often lack specificity, leading to systemic toxicity.
- Pullulan and folic acid (FA) show affinity for specific liver cancer receptors, suggesting their potential for targeted delivery.
Purpose of the Study:
- To fabricate dual-targeted, reduction-responsive pullulan nanoparticles decorated with folic acid (FA-Pull-LA CLNPs) for liver cancer drug delivery.
- To evaluate the drug release, targeting efficiency, and anti-tumor efficacy of these nanoparticles.
- To assess the safety profile of the developed nanoparticles in a preclinical model.
Main Methods:
- Fabrication of reversibly disulfide-crosslinked pullulan nanoparticles decorated with folic acid.
- Loading of paclitaxel (PTX) into the nanoparticles (FA-Pull-LA-PTX CLNPs).
- Characterization of nanoparticle size, PDI, and zeta potential.
- In vitro drug release studies under reducing (glutathione) and physiological conditions.
- In vitro cellular uptake and endosomal accumulation assays.
- In vivo anti-tumor efficacy and toxicity studies in SMMC-7721 tumor-bearing mice.
Main Results:
- FA-Pull-LA CLNPs exhibited favorable physicochemical properties (size, PDI, zeta potential).
- Significantly faster PTX release was observed in the presence of glutathione (10mM) compared to physiological conditions.
- In vitro studies confirmed dual targetability and endosomal accumulation of FA-Pull-LA NPs.
- FA-Pull-LA-PTX CLNPs demonstrated superior anti-tumor efficiency and lower toxicity in vivo compared to control groups.
Conclusions:
- Reversibly crosslinked FA-Pull-LA NPs offer a stable and intelligent platform for dual-targeted, reduction-responsive liver cancer therapy.
- The dual-targeting strategy enhances drug delivery and therapeutic outcomes.
- These nanoparticles hold promise for further development in various anti-cancer applications.
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