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Evaluation of Polymeric Gene Delivery Nanoparticles by Nanoparticle Tracking Analysis and High-throughput Flow Cytometry
Published on: March 1, 2013
Cationic polybutyl cyanoacrylate nanoparticles for DNA delivery
Jinghua Duan1, Yangde Zhang, Wei Chen
1Key Laboratory of Nanobiological Technology, Ministry of Health National Hepatobiliary and Enteric Surgery Research Center, Central South University, Changsha, Hunan 410008, China.
Journal of Biomedicine & Biotechnology
|March 21, 2009
Summary
Polybutyl cyanoacrylate nanoparticles (PBCA-NPs) effectively deliver plasmid DNA into cells. These nanoparticles show low toxicity and high efficiency in gene delivery, making them promising nonviral vectors.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Gene Delivery
Background:
- Nonviral vectors are crucial for enhancing plasmid DNA intracellular delivery.
- Polybutyl cyanoacrylate (PBCA) and chitosan are explored for nanoparticle (NP) development.
- Efficient and safe gene delivery systems are needed for therapeutic applications.
Purpose of the Study:
- To prepare and characterize PBCA nanoparticles (NPs) for plasmid DNA delivery.
- To evaluate the transfection efficiency and safety of PBCA-NPs in human hepatocellular carcinoma (HepG2) cells.
- To assess the potential of PBCA-NPs as nonviral vectors for gene delivery.
Main Methods:
- PBCA nanoparticles were synthesized using emulsion polymerization.
- NP/DNA complexes were formed via complex coacervation.
- Nanoparticle characterization included zeta potential and size analysis.
- Transfection efficiency was evaluated using enhanced green fluorescent protein (EGFP-N1) in HepG2 cells via fluorescence microscopy and FACS.
- Cytotoxicity was assessed using cell viability assays.
Main Results:
- PBCA-NPs exhibited a zeta potential of 25.53 mV at pH 7.4 and a size of approximately 200 nm.
- Electrophoretic analysis indicated DNA protection from nuclease degradation by the positively charged NPs.
- Cell viability assays demonstrated low cytotoxicity of PBCA-NPs towards HepG2 cells.
- Qualitative analysis showed highly efficient and stable GFP expression for up to 96 hours.
- Quantitative FACS analysis revealed significantly enhanced transfection efficiency at 72 hours post-incubation.
Conclusions:
- PBCA-NPs demonstrate favorable characteristics for nonviral plasmid DNA delivery.
- The prepared nanoparticles offer efficient gene transfection with low cytotoxicity.
- PBCA-NPs represent a promising platform for enhanced intracellular gene delivery applications.
