Monocyte-Derived Interleukin-10 Depresses the Bordetella pertussis - Specific Gamma Interferon Response in Vaccinated Infants

Author:

Dirix V.1,Verscheure V.1,Goetghebuer T.2,Hainaut M.2,Debrie A. S.34,Locht C.34,Mascart F.15

Affiliation:

1. Laboratory of Vaccinology and Mucosal Immunity

2. Department of Pediatrics, Hôpital Saint-Pierre, Université Libre de Bruxelles, Brussels, Belgium

3. INSERM U629, F-59019 Lille, France

4. Institut Pasteur de Lille, F-59019 Lille, France

5. Immunobiology Clinic, Hôpital Erasme

Abstract

ABSTRACT Antigen-specific gamma interferon (IFN-γ) has been demonstrated to participate in protection against Bordetella pertussis infection. Circulating mononuclear cells from B. pertussis -infected and from pertussis-vaccinated infants secrete high amounts of IFN-γ after in vitro stimulation by B. pertussis antigens, but with a large variation in the secreted IFN-γ levels between individuals. We show here that the inhibition of the specific IFN-γ response can be at least partially attributed to IL-10 secretion by monocytes. This IL-10 secretion was not associated with polymorphisms at positions −1082, −819, and −592 of the IL-10 gene promoter, suggesting that other genetic or environmental factors affect IL-10 expression and secretion.

Publisher

American Society for Microbiology

Subject

Microbiology (medical),Clinical Biochemistry,Immunology,Immunology and Allergy

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