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Le Rouzic O, Koné B, Kluza J, Marchetti P, Hennegrave F, Olivier C, Kervoaze G, Vilain E, Mordacq C, Just N, Perez T, Bautin N, Pichavant M, Gosset P. Cigarette smoke alters the ability of human dendritic cells to promote anti-Streptococcus pneumoniae Th17 response. Respir Res 2016; 17:94. [PMID: 27460220 PMCID: PMC4962368 DOI: 10.1186/s12931-016-0408-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 07/16/2016] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is associated with chronic inflammation and impaired immune response to pathogens leading to bacteria-induced exacerbation of the disease. A defect in Th17 cytokines in response to Streptococcus pneumoniae, a bacteria associated with COPD exacerbations, has been recently reported. Dendritic cells (DC) are professional antigen presenting cells that drive T-cells differentiation and activation. In this study, we hypothesized that exposure to cigarette smoke, the main risk factor of COPD, might altered the pro-Th17 response to S. pneumoniae in COPD patients and human DC. METHODS Pro-Th1 and -Th17 cytokine production by peripheral blood mononuclear cells (PBMC) from COPD patients was analyzed and compared to those from smokers and non-smokers healthy subjects. The effect of cigarette smoke extract (CSE) was analyzed on human monocyte-derived DC (MDDC) from controls exposed or not to S. pneumoniae. Bacteria endocytosis, maturation of MDDC and secretion of cytokines were assessed by flow cytometry and ELISA, respectively. Implication of the oxidative stress was analyzed by addition of antioxidants and mitochondria inhibitors. In parallel, MDDC were cocultured with autologous T-cells to analyze the consequence on Th1 and Th17 cytokine production. RESULTS PBMC from COPD patients exhibited defective production of IL-1β, IL-6, IL-12 and IL-23 to S. pneumoniae compared to healthy subjects and smokers. CSE significantly reduced S. pneumoniae-induced MDDC maturation, secretion of pro-Th1 and -Th17 cytokines and activation of Th1 and Th17 T-cell responses. CSE exposure was also associated with sustained CXCL8 secretion, bacteria endocytosis and mitochondrial oxidative stress. Antioxidants did not reverse these effects. Inhibitors of mitochondrial electron transport chain partly reproduced inhibition of S. pneumoniae-induced MDDC maturation but had no effect on cytokine secretion and T cell activation. CONCLUSIONS We observed a defective pro-Th1 and -Th17 response to bacteria in COPD patients. CSE exposure was associated with an inhibition of DC capacity to activate antigen specific T-cell response, an effect that seems to be not only related to oxidative stress. These results suggest that new therapeutics boosting this response in DC may be helpful to improve treatment of COPD exacerbations.
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Affiliation(s)
- Olivier Le Rouzic
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- CHU Lille, Service de Pneumologie Immunologie et Allergologie, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
| | - Bachirou Koné
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
| | - Jerome Kluza
- Univ. Lille, UMR-S 1172 – JPArc – Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000 Lille, France
- Inserm, UMR-S 1172, F-59000 Lille, France
| | - Philippe Marchetti
- Univ. Lille, UMR-S 1172 – JPArc – Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000 Lille, France
- Inserm, UMR-S 1172, F-59000 Lille, France
| | - Florence Hennegrave
- CHU Lille, Service de Pneumologie Immunologie et Allergologie, F-59000 Lille, France
| | - Cécile Olivier
- CHU Lille, Service de Pneumologie Immunologie et Allergologie, F-59000 Lille, France
| | - Gwenola Kervoaze
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
| | - Eva Vilain
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
| | - Clémence Mordacq
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
- CHU Lille, Service de Pédiatrie, F-59000 Lille, France
| | - Nicolas Just
- CH Roubaix, Service de Pneumologie, F-59100 Roubaix, France
| | - Thierry Perez
- CHU Lille, Service de Pneumologie Immunologie et Allergologie, F-59000 Lille, France
| | - Nathalie Bautin
- CHU Lille, Service de Pneumologie Immunologie et Allergologie, F-59000 Lille, France
| | - Muriel Pichavant
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
| | - Philippe Gosset
- Univ. Lille, U1019 – UMR 8204 – CIIL – Center for Infection and Immunity of Lille, F-59000 Lille, France
- CNRS, UMR 8204, F-59000 Lille, France
- Inserm, U1019, F-59000 Lille, France
- Institut Pasteur de Lille, F-59000 Lille, France
- LI3, CIIL - Institut Pasteur de Lille, F-59000 Lille, France
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