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Viral Nanoparticles for In vivo Tumor Imaging
14:04

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Published on: November 16, 2012

Programmable nanoparticle functionalization for in vivo targeting.

Hua Pan1, Jacob W Myerson, Lingzhi Hu

  • 1Department of Medicine, Washington University School of Medicine, St. Louis, MO 63108, USA.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|October 11, 2012
PubMed
Summary
This summary is machine-generated.

A novel peptide linker enables rapid, stable postformulation functionalization of lipidic nanocarriers for targeted delivery. This adaptable strategy enhances nanoparticle accumulation in atherosclerosis and breast cancer models.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Drug Delivery

Background:

  • Existing nanocarriers require redesign for specific applications, hindering efficient cargo loading.
  • Programmable functionalization of nanocarriers is crucial for diverse therapeutic needs.

Purpose of the Study:

  • To develop a versatile postformulation strategy for lipidic nanocarrier functionalization.
  • To demonstrate in vivo the efficacy of a peptide linker-based approach for targeted delivery.

Main Methods:

  • A self-assembling peptide linker was used to integrate cargo into lipidic nanocarrier membranes postformulation.
  • VCAM-1-targeted perfluorocarbon nanoparticles were generated and tested in atherosclerosis and breast cancer models.
  • Fluorine-19 magnetic resonance spectroscopy quantified tissue-bound nanoparticles.

Main Results:

  • Targeted nanoparticles showed significantly enhanced binding in atherosclerotic aortas (4.1-fold increase) and breast tumor vasculature (4.9-fold increase).
  • The peptide linker strategy facilitated stable cargo integration and effective in vivo targeting.
  • Quantitative analysis confirmed nanoparticle accumulation in target tissues.

Conclusions:

  • The peptide linker postformulation approach offers a universal method for functionalizing lipidic nanocarriers.
  • This strategy is applicable to a wide range of nanocarriers, including liposomes and micelles.
  • It addresses the need for adaptable nanocarrier systems in clinical applications.