Cytokine production by cultured human bronchial epithelial cells infected with a replication-deficient adenoviral gene transfer vector or wild-type adenovirus type 5 - PubMed (original) (raw)

Cytokine production by cultured human bronchial epithelial cells infected with a replication-deficient adenoviral gene transfer vector or wild-type adenovirus type 5

T L Noah et al. Am J Respir Cell Mol Biol. 1996 May.

Abstract

Exposure of animals to adenoviral gene transfer vectors has been associated with respiratory tract inflammation. The pathogenesis of this inflammation is unclear. One hypothesis is that viral vectors directly induce production of inflammatory cytokines by host cells in the airways. We exposed cultured human lung cells to an adenovirus-5--based vector containing the cytomegalovirus promoter and lacZ reporter gene (Ad.CMV.lacZ) and to wild-type adenovirus 5 (wtAd5) and measured subsequent release of cytokines into cell culture supernatants. Inoculation of human bronchial epithelial (HBE) cells with Ad.CMV. lacZ at 10(1) to 10(4) plaque-forming units (pfu)/cell resulted in dose-related expression of lacZ by both X-gal staining and immunohistochemistry but did not increase release of interleukin (IL)-8 or IL-6 at 24, 48, or 96 h after inoculation. In the same cultures, tumor necrosis factor-alpha induced marked increases in release of both IL-8 and IL-6 at 24 and 48 h after stimulation. Similar data were observed in the BEAS-2B HBE cell line. HBE cells incubated with wtAd5 at doses of 10(1) to 10(3) pfu/cell did not release increased amounts of IL-6 or IL-8 up to 48 h after inoculation, though wild-type respiratory syncytial virus (3 pfu/HBE cell) infection resulted in increases in both cytokines. Human alveolar macrophages obtained by bronchoalveolar lavage also showed no increases in cytokine release after incubation with Ad.CMV.lacZ, though relatively little gene transfer occurred in macrophages. These data do not support a role for direct induction of airway epithelial or alveolar macrophage inflammatory cytokines in the pathogenesis of inflammation associated with exposure of airways to adenovirus or to adenoviral gene transfer vectors.

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Cytokine production by cultured human bronchial epithelial cells infected with a replication-deficient adenoviral gene transfer vector or wild-type adenovirus type 5 - PubMed (original) (raw)