The human Clara cell protein: biochemical and biological characterisation of a natural immunosuppressor

The Clara cell protein, the human counterpart of rabbit uteroglobin, exerts an anti-inflammatory action by interfering in different ways with the cytokine-network. Firstly, CC16 behaves like an anti-cytokine by downregulating the production of IFN-γ, IL-1 and TNF-α by stimulated leukocytes. The exte...

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Bibliographic Details
Published in:Multiple sclerosis 1996-07, Vol.1 (6), p.385-387
Main Authors: Dierynck, I, Bernard, A, Roels, H, DeLey, M
Format: Article
Language:English
Subjects:
Cytokines - biosynthesis
Cytotoxicity, Immunologic
Humans
Immune Tolerance
Killer Cells, Natural - immunology
Proteins - physiology
Uteroglobin
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Summary:The Clara cell protein, the human counterpart of rabbit uteroglobin, exerts an anti-inflammatory action by interfering in different ways with the cytokine-network. Firstly, CC16 behaves like an anti-cytokine by downregulating the production of IFN-γ, IL-1 and TNF-α by stimulated leukocytes. The extent of inhibition depends on the inducing agent (being maximal when IL-2 is used as inducer) and varies with the applied concentration of CC16. Secondly, the protein reduces the antiviral activity and the augmentation of phagocytosis induced by IFN-γ. In both cases (inhibition of production and biologic activity) there is a 50% reduction in the presence of 10 ng/ml CC16. The natural and IFN-γ-enduced cytotoxicity of NK-cells however, are enhanced by the presence of CC16, indicating a more complex interaction of CC16 with the immune-system. The immunosuppressive properties make CC16 a promising agent for the treatment of inflammatory reactions and auto-immune diseases.
ISSN:1352-4585
1477-0970
DOI:10.1177/135245859600100621