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Evaluation of Polymeric Gene Delivery Nanoparticles by Nanoparticle Tracking Analysis and High-throughput Flow Cytometry
Published on: March 1, 2013
PGMA-Based Cationic Nanoparticles with Polyhydric Iodine Units for Advanced Gene Vectors
Yue Sun1, Hao Hu1, Bingran Yu1
1State Key Laboratory of Chemical Resource Engineering, ‡Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, and §Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029 China.
New star-like polycations incorporating iodine contrast agents offer safe and effective gene delivery. These multifunctional nanoparticles enhance cell viability and provide superior in vitro CT imaging for tumor cells.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Gene Delivery Systems
Background:
- Developing safe, effective, and multifunctional polycations is essential for successful gene delivery.
- Iodine-based small molecules are commonly used as contrast agents for computed tomography (CT) imaging.
Purpose of the Study:
- To prepare novel star-like poly(glycidyl methacrylate) (PGMA)-based cationic vectors (II-PGEA/II) for multifunctional gene delivery.
- To investigate the self-assembly, stability, cell viability, transfection efficiency, and CT imaging capabilities of these novel vectors.
Main Methods:
- Synthesis of star-like PGMA vectors with an iohexol intermediate (II) core and PGMA arms.
- Characterization of self-assembled cationic nanoparticles.
- Evaluation of cell viability and in vitro transfection performance in different cell lines.
- Assessment of in vitro CT imaging abilities in tumor cells.
Main Results:
- Amphipathic II-PGEA/II vectors self-assembled into stable cationic nanoparticles with a hydration shell.
- Introduction of iodine units (II) improved polycation cell viabilities.
- II-PGEA/II nanoparticles demonstrated good transfection performances across various cell lines.
- II-PGEA/II nanoparticles exhibited superior in vitro CT imaging capabilities in tumor cells compared to commercial iohexol.
Conclusions:
- The designed amphipathic PGMA-based nanoparticles incorporating CT contrast agents represent a promising multifunctional gene delivery system.
- The study provides valuable insights for developing advanced gene delivery platforms with integrated imaging capabilities.
