ICAM-1 expression on bronchial epithelium after recombinant adenovirus infection.

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Abstract
Early experience with recombinant adenoviruses for gene transfer to airway epithelium suggests that these vectors are associated with the development of inflammation. The mechanisms for this are unclear, but previous work has shown that respiratory viruses can cause increased expression of intercellular adhesion molecule-1 (ICAM-1) on airway epithelial cells. We therefore hypothesized that recombinant adenoviruses may induce ICAM-1 expression and thereby facilitate the development of airway inflammation. To address this, primary cultures of human bronchial epithelial cells were examined for ICAM-1 expression by flow cytometry after infection with a serotype 5, E1/E3-deleted recombinant adenovirus containing the Escherichia coli LacZ reporter gene driven by the cytomegalovirus promoter (Ad.CMVlacZ). Compared with control cells, ICAM-1 expression was unchanged after infection with Ad.CMVlacZ, but increased after infection with wild-type adenovirus. Treatment of Ad.CMVlacZ-infected cells with interferon-gamm...

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