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An Ecdysone Receptor-based Singular Gene Switch for Deliberate Expression of Transgene with Robustness, Reversibility, and Negligible Leakiness
Published on: May 7, 2018
A highly emissive conjugated polyelectrolyte vector for gene delivery and transfection
Xuli Feng1, Fengting Lv, Libing Liu
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|August 14, 2012
Summary
A novel fluorescent polymer, intrinsically fluorescent cationic polyfluorene (CCP), efficiently delivers plasmid DNA (pDNA) for gene therapy. This polymer protects pDNA and achieves high transfection efficiency, outperforming commercial agents.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Gene Therapy
Background:
- Development of non-viral gene delivery vectors is crucial for safe and effective gene therapy.
- Conjugated polymers offer potential due to their tunable properties and fluorescence.
Purpose of the Study:
- To design, synthesize, and evaluate an intrinsically fluorescent cationic polyfluorene (CCP) as a plasmid DNA (pDNA) delivery vector.
- To assess CCP's efficiency in pDNA protection, cellular uptake, and gene transfection.
- To explore CCP's utility in real-time imaging of gene delivery.
Main Methods:
- Synthesis and characterization of intrinsically fluorescent cationic polyfluorene (CCP).
- Evaluation of pDNA binding, encapsulation, and protection against nuclease degradation.
- In vitro transfection studies using GFP gene expression.
- Assessment of cellular uptake and fluorescence properties (quantum yield, photostability).
Main Results:
- CCP demonstrated efficient pDNA binding, encapsulation, and protection from nuclease degradation.
- CCP achieved 92% transfection efficiency for GFP gene delivery, surpassing Lipofectamine 2000 and PEI.
- CCP exhibited high fluorescence (43% quantum yield in water) and excellent photostability, enabling real-time tracking.
Conclusions:
- Intrinsically fluorescent CCP is a highly effective pDNA delivery vector.
- CCP offers superior transfection efficiency and imaging capabilities compared to commercial agents.
- CCP represents a significant advancement for conjugated polymers in combined imaging and therapeutic applications.
