Interleukin-10 relieves the inhibitory effects of interferon-γ on normal human lung fibroblasts
Interleukin-10 (IL-10) is an important cytokine that suppresses the production of cytokines and chemokines by immune cells. IL-10 has been suggested to be involved in chronic inflammatory responses including the remodeling process in the lung. We investigated the effects of IL-10 on proliferation, extracellular matrix and cytokine production in normal human lung fibroblasts (NHLF). Human IL-10 (hIL-10) complementary DNA (cDNA) was transfected into NHLF using an adenoviral vector. No significant changes were observed in proliferation, fibronectin or procollagen type I production in the NHLF transfected with hIL-10 cDNA. Interferon (IFN)-γ significantly inhibited cell proliferation and extracellular matrix production in a dose-dependent manner. Transfection of hIL-10 cDNA significantly relieved the suppressive effects of IFN-γ in NHLF. Transforming growth factor (TGF)-β production was not significantly affected by either transfection of hIL-10 cDNA or the addition of IFN-γ. The relief of the suppressive function of IFN-γ by IL-10 suggested that IL-10 is indirectly involved in the remodeling process in the lung interstitium.
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Document Type: Research Article
Affiliations: Department of Pathology, Tokai University School of Medicine, Bohseidai, Isehara, Kanagawa 259-1193, Japan
Publication date: January 1, 2001
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- The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.
The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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