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Published on: October 26, 2018
An efficient nonviral gene-delivery vector based on hyperbranched cationic glycogen derivatives
Xuan Liang1, Xianyue Ren2, Zhenzhen Liu1
1Institute of Polymer Science, School of Chemistry and Chemical Engineering, Key Laboratory of Designed Synthesis and Application of Polymer Material, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-Sen University, Guangzhou, People's Republic of China.
Novel hyperbranched cationic glycogen derivatives show promise as nonviral gene vectors. These DMAPA-Glyp derivatives offer high gene-transfection efficiency, good blood compatibility, and low cytotoxicity for in vitro and in vivo applications.
Area of Science:
- Biomaterials Science
- Gene Therapy
- Nanotechnology
Background:
- Nonviral gene-delivery vectors are crucial for gene therapy.
- Developing efficient and safe vectors remains a challenge.
Purpose of the Study:
- To synthesize and evaluate hyperbranched cationic glycogen derivatives as efficient nonviral gene-delivery vectors.
- To assess their potential for in vitro and in vivo gene transfection.
Main Methods:
- Synthesis and characterization of DMAPA-Glyp and AEPZ-Glyp glycogen derivatives.
- Evaluation of pDNA condensation, blood compatibility, cytotoxicity, and transfection efficiency.
- In vivo gene delivery assessment in Sprague Dawley rats.
Main Results:
- Synthesized glycogen derivatives showed good pDNA condensation and formed complexes of 100-250 nm.
- DMAPA-Glyp derivatives exhibited superior transfection efficiency compared to AEPZ-Glyp and comparable to bPEI.
- In vivo studies demonstrated safe pDNA delivery and expression in rat brain tissue.
Conclusions:
- Hyperbranched cationic glycogen derivatives, particularly DMAPA-Glyp, are effective nonviral gene vectors.
- These novel vectors demonstrate high gene-transfection efficiency, good blood compatibility, and low cytotoxicity.
- The findings suggest their potential for advanced gene therapy applications.
