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Updated: Dec 24, 2025

Evaluation of Polymeric Gene Delivery Nanoparticles by Nanoparticle Tracking Analysis and High-throughput Flow Cytometry
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Statistical versus block fluoropolymers in gene delivery.

Echuan Tan1, Jia Lv, Jingjing Hu

  • 1Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China. yycheng@mail.ustc.edu.cn.

Journal of Materials Chemistry. B
|April 8, 2020
PubMed
Summary

New fluoropolymers enhance non-viral gene delivery. Statistical copolymers of poly(2-dimethylaminoethyl methacrylate) and poly(heptafluorobutyl methacrylate) show superior DNA delivery compared to block copolymers.

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Gene Therapy

Background:

  • Fluoropolymers show potential for non-viral gene delivery.
  • Current methods involve grafting fluoroalkyls/fluoroaromatics onto cationic polymers.
  • Novel synthesis strategies are needed to expand fluoropolymer applications in nucleic acid delivery.

Purpose of the Study:

  • To synthesize novel statistical and block copolymers of poly(2-dimethylaminoethyl methacrylate) (pDMAEMA) and poly(heptafluorobutyl methacrylate) (pHFMA).
  • To evaluate the gene delivery and transfection efficiencies of these novel fluorocopolymers.
  • To elucidate structure-activity relationships for fluoropolymers in gene delivery.

Main Methods:

  • Reversible addition-fragmentation chain transfer (RAFT) polymerization was used to synthesize statistical and block copolymers.
  • Copolymers synthesized included poly(2-dimethylaminoethyl methacrylate) (pDMAEMA) and poly(heptafluorobutyl methacrylate) (pHFMA).
  • Transfection efficiencies of the synthesized fluorocopolymers were evaluated for gene delivery applications.

Main Results:

  • Statistical fluorocopolymers demonstrated significantly higher gene delivery performance than block copolymers.
  • Enhanced DNA uptake by transfected cells was observed with statistical copolymers.
  • The statistical copolymer of DMAEMA and HFMA exhibited a notable fluorine effect, outperforming non-fluorinated polymers.

Conclusions:

  • The study reveals structure-activity relationships for DMAEMA and HFMA-based fluoropolymers in gene delivery.
  • Statistical copolymer architecture is crucial for efficient and sustained DNA uptake.
  • These findings offer new insights for designing advanced fluoropolymers for effective gene delivery.