Selected article for: "cell produce and protein expression"
Author: CAO, Huibi; WANG, Anan; MARTIN, Bernard; KOEHLER, David R; ZEITLIN, Pamela L; TANAWELL, A Keith; HU, Jim
Title: Down-regulation of IL-8 expression in human airway epithelial cells through helper-dependent adenoviral-mediated RNA interference
  • Cord-id: e6a8qz45
  • Document date: 2005_2_25
    • ID: e6a8qz45
    Snippet: Interleukin (IL)-8 is a potent neutrophil chemotactic factor and a crucial mediator in neutrophil-dependent inflammation. Various cell types produce IL-8, either in response to external stimuli such as cytokines or bacterial infection, or after malignant transformation. Anti-IL-8 strategies have been considered for anti-inflammatory therapy. In this paper we demonstrate that the RNA interference technique can be used to efficiently down-regulate IL-8 protein expression in airway epithelial cells
    Document: Interleukin (IL)-8 is a potent neutrophil chemotactic factor and a crucial mediator in neutrophil-dependent inflammation. Various cell types produce IL-8, either in response to external stimuli such as cytokines or bacterial infection, or after malignant transformation. Anti-IL-8 strategies have been considered for anti-inflammatory therapy. In this paper we demonstrate that the RNA interference technique can be used to efficiently down-regulate IL-8 protein expression in airway epithelial cells. We used a helper-dependent adenoviral vector to express a small hairpin (sh)RNA targeting human IL-8 in cultured airway epithelial cells (IB3-1, Cftr(−/−); C38, Cftr-corrected) stimulated with TNF-α, IL-1β or heat-inactivated Burkholderia cenocepacia. Stimulated IL-8 expression in IB3-1 and C38 cells was significantly reduced by shRNA expression. The shRNA targeting IL-8 had no effect on the activation of NF-κB, or on the protein levels of IκB or IL-6, suggesting that this anti-IL-8 strategy was highly specific, and therefore may offer potential for the treatment of inflammatory diseases. SUPPLEMENTARY INFORMATION: The online version of this article (doi:10.1038/sj.cr.7290275) contains supplementary material, which is available to authorized users.

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