Genetic delivery of bevacizumab to suppress vascular endothelial growth factor-induced high-permeability pulmonary edema. Academic Article uri icon

Overview

MeSH

  • Animals
  • Antibodies, Monoclonal, Humanized
  • Bevacizumab
  • Bronchoalveolar Lavage Fluid
  • Drug Administration Routes
  • Gene Expression Regulation
  • Humans
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Organ Size
  • Permeability
  • Phosphorylation
  • RNA, Messenger
  • Time Factors
  • Tissue Distribution
  • Vascular Endothelial Growth Factor A
  • Vascular Endothelial Growth Factor Receptor-2

MeSH Major

  • Antibodies, Monoclonal
  • Gene Transfer Techniques
  • Pulmonary Edema

abstract

  • High-permeability pulmonary edema causing acute respiratory distress syndrome is associated with high mortality. Using a model of intratracheal adenovirus (Ad)-mediated overexpression of human vascular endothelial growth factor (VEGF)-A(165) in mouse lung to induce alveolar permeability and consequent pulmonary edema, we hypothesized that systemic administration of a second adenoviral vector expressing an anti-VEGF antibody (AdalphaVEGFAb) would protect the lung from pulmonary edema. Pulmonary edema was induced in mice by intratracheal administration of AdVEGFA165. To evaluate anti-VEGF antibody therapy, the mice were treated intravenously with AdalphaVEGFAb, an adenoviral vector encoding the light and heavy chains of an anti-human VEGF antibody with the bevacizumab (Avastin) antigen-binding site. Lung VEGF-A(165) and phosphorylated VEGF receptor (VEGFR)-2 levels, histology, lung wet-to-dry weight ratios, and bronchoalveolar lavage fluid (BALF) levels of total protein were assessed. Administration of AdalphaVEGFAb to mice decreased AdVEGFA165-induced levels of human VEGF-A(165) and phosphorylated VEGFR-2 in the lung. Histological analysis of AdalphaVEGFAb-treated mice demonstrated a reduction of edema fluid in the lung tissue that correlated with a reduction of lung wet-to-dry ratios and BALF total protein levels. Importantly, administration of AdalphaVEGFAb 48 hr after induction of pulmonary edema with AdVEGFA165 was effective in suppressing pulmonary edema. Administration of an adenoviral vector encoding an anti-VEGF antibody that is the equivalent of bevacizumab effectively suppresses VEGF-A(165)-induced high-permeability pulmonary edema, suggesting that anti-VEGF antibody therapy may represent a novel therapy for high-permeability pulmonary edema.

publication date

  • June 2009

has subject area

  • Animals
  • Antibodies, Monoclonal
  • Antibodies, Monoclonal, Humanized
  • Bevacizumab
  • Bronchoalveolar Lavage Fluid
  • Drug Administration Routes
  • Gene Expression Regulation
  • Gene Transfer Techniques
  • Humans
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Organ Size
  • Permeability
  • Phosphorylation
  • Pulmonary Edema
  • RNA, Messenger
  • Time Factors
  • Tissue Distribution
  • Vascular Endothelial Growth Factor A
  • Vascular Endothelial Growth Factor Receptor-2

Research

keywords

  • Journal Article

Identity

Language

  • eng

PubMed Central ID

  • PMC2828641

Digital Object Identifier (DOI)

  • 10.1089/hum.2008.169

PubMed ID

  • 19254174

Additional Document Info

start page

  • 598

end page

  • 610

volume

  • 20

number

  • 6