Targeting efficiency and biodistribution of biotinylated-EGF-conjugated gelatin nanoparticles administered via aerosol delivery in nude mice with lung cancer

Ching Li Tseng, Steven Yueh Hsiu Wu, Wen Hsi Wang, Cheng Liang Peng, Feng Huei Lin, Chien Cheng Lin, Tai Horng Young, Ming Jium Shieh

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104 Citations (Scopus)


Lung cancer is the most malignant cancer today; in order to develop an effective drug delivery system for lung cancer therapy, gelatin nanoparticles (GPs) were modified with NeutrAvidinFITC-biotinylated epidermal growth factor (EGF) to form EGF receptor (EGFR)-seeking nanoparticles (GP-Av-bEGF). Aerosol droplets of the GP-Av-bEGF were generated by using a nebulizer and were delivered to mice model of lung cancer via aerosol delivery. Analysis of the aerosol size revealed that 99% of the nanoparticles after nebulization had a mass median aerodynamic diameter (MMAD) within the suitable range (0.5-5 μm) for lower airway deposition. The safety of inhaled nanoparticles was examined by lung edema and myeloperoxidase (MPO) activity assay. There's no finding suggestive of acute lung inflammation following inhalation. The fluorescence images obtained from live mice showed that the GP-Av-bEGF could target the cancerous lungs in a more specific manner. Fluorescence analysis of the organs revealed that the GP-Av-bEGF was mainly distributed in cancerous lungs. In contrast, nanoparticle accumulation was lower in normal lungs. The histological results indicated that the fluorescent GP-Av-bEGF was colocalized with the anti-EGFR-immunostain due to EGFR binding. The results of this study revealed that GP-Av-bEGF could target to the EGFR-overexpression cancer cells in vivo and may prove to be beneficial drug carriers when administered by simple aerosol delivery for the treatment of lung cancer.

Original languageEnglish
Pages (from-to)3014-3022
Number of pages9
Issue number20
Publication statusPublished - Jul 2008
Externally publishedYes



  • Drug delivery
  • EGF
  • Gelatin
  • In vivo test
  • Lung cancer
  • Nanoparticle

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

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