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A Facile Multifunctionalized Gene Delivery Platform Based on α,β Cyclodextrin Dimers.

Qi Lei1, Hui-Zhen Jia1, Wei-Hai Chen1

  • 1Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples' Republic of China.

ACS Biomaterials Science & Engineering
|January 12, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel gene delivery system using adamantane-substituted polyethylenimine and cyclodextrin dimers. This platform enables efficient DNA delivery, targeting, and imaging for potential therapeutic applications.

Keywords:
gene deliveryhost−guest interactionpostmodificationα,β CD dimer

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Gene Therapy

Background:

  • Developing effective non-viral gene delivery vectors is crucial for gene therapy.
  • Stimuli-responsive polymers offer advantages in controlled drug release and delivery.
  • Host-guest interactions provide a versatile platform for assembling functional nanomaterials.

Purpose of the Study:

  • To develop a novel reduction-sensitive gene delivery platform using adamantane-substituted polyethylenimine (Ad-b-SS-PEI600).
  • To utilize alpha, beta-cyclodextrin (α,β-CD) dimers for bridging polyplexes with functional moieties.
  • To achieve targeted gene delivery, in vitro/in vivo imaging, and efficient transfection.

Main Methods:

  • Synthesis of adamantane-substituted reduction-sensitive polyethylenimine (Ad-b-SS-PEI600).
  • Formation of polyplexes with DNA.
  • Assembly of functional moieties (targeting ligand, fluorescent probe) using α,β-CD dimer host-guest interactions.
  • In vitro and in vivo evaluation of gene delivery, transfection, targeting, and imaging capabilities.

Main Results:

  • The Ad-b-SS-PEI600/DNA polyplexes demonstrated effective DNA compaction.
  • The system exhibited rapid stimuli responsiveness.
  • Post-decorated functional moieties on the assemblies efficiently performed their intended functions.
  • The gene delivery platform showed good biocompatibility.
  • Efficient gene transfection, targeting, and imaging were achieved both in vitro and in vivo.

Conclusions:

  • The developed gene delivery platform based on Ad-b-SS-PEI600 and α,β-CD dimers is a promising tool for advanced gene therapy.
  • The host-guest interaction strategy allows for versatile functionalization and targeted delivery.
  • The system's stimuli-responsive nature and biocompatibility support its potential for clinical translation.