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Related Concept Videos

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Related Experiment Video

Updated: Apr 19, 2026

Evaluation of Polymeric Gene Delivery Nanoparticles by Nanoparticle Tracking Analysis and High-throughput Flow Cytometry
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Evaluation of Polymeric Gene Delivery Nanoparticles by Nanoparticle Tracking Analysis and High-throughput Flow Cytometry

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Next generation carbon nanoparticles for efficient gene therapy.

Santosh K Misra1, Ayako Ohoka, Nicholas J Kolmodin

  • 1Department of Bioengineering, University of Illinois Urbana-Champaign , Urbana, Illinois 61801, United States.

Molecular Pharmaceutics
|December 17, 2014
PubMed
Summary
This summary is machine-generated.

Researchers developed novel carbon nanoparticle-DNA complexes (CNPLexes) for gene delivery. These CNPLexes efficiently transfected breast cancer cells with a reporter gene, showing low toxicity and high viability compared to traditional agents.

Keywords:
breast cancercarbon particlesgene deliverygene therapynanometer sized agents

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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Gene Therapy

Background:

  • Developing efficient and safe gene delivery vehicles is crucial for therapeutic applications.
  • Carbon nanoparticles offer potential as non-viral gene vectors.
  • Optimizing nanoparticle-DNA complexes (CNPLexes) is key for enhanced transfection.

Purpose of the Study:

  • To develop and characterize next-generation carbon nanoparticle-DNA complexes (CNPLexes) for gene delivery.
  • To evaluate the transfection efficiency and safety of CNPLexes in breast cancer cells.
  • To compare CNPLex performance against commercial transfection agents and parent polymers.

Main Methods:

  • Synthesis and optimization of carbon nanoparticles (CNPs) with varying physicochemical properties.
  • Complexation of CNPs with plasmid DNA (pDNA) encoding green fluorescent protein (GFP).
  • Transfection of MCF-7 and MDA-MB231 breast cancer cells, followed by GFP expression analysis using fluorescence microscopy and flow cytometry.
  • Assessment of cell toxicity and viability using LDH and MTT assays.

Main Results:

  • Optimized CNPLexes demonstrated efficient delivery of pEGFP-N1 plasmid DNA into breast cancer cells.
  • CNPLexes exhibited significantly lower cytotoxicity and higher cell viability compared to polyethylenimine (PEI).
  • Transfection efficiency of developed CNPLexes was comparable to Lipofectamine 2000.

Conclusions:

  • Polymer-decorated carbon nanoparticles represent a promising, safer alternative for gene delivery.
  • CNPLexes show potential as effective and traceable gene delivery vehicles for breast cancer therapy.
  • The developed CNPLexes offer a competitive and improved option over existing non-viral vectors.