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B-Cell Activating Factor Secreted by Neutrophils Is a Critical Player in Lung Inflammation to Cigarette Smoke Exposure.
Nascimento, Mégane; Huot-Marchand, Sarah; Gombault, Aurélie; Panek, Corinne; Bourinet, Manon; Fanny, Manoussa; Savigny, Florence; Schneider, Pascal; Le Bert, Marc; Ryffel, Bernhard; Riteau, Nicolas; Quesniaux, Valérie F J; Couillin, Isabelle.
Afiliación
  • Nascimento M; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Huot-Marchand S; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Gombault A; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Panek C; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Bourinet M; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Fanny M; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Savigny F; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Schneider P; Department of Biochemistry, University of Lausanne, Épalinges, Switzerland.
  • Le Bert M; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Ryffel B; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Riteau N; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Quesniaux VFJ; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
  • Couillin I; University of Orleans and CNRS, INEM-UMR7355, Orléans, France.
Front Immunol ; 11: 1622, 2020.
Article en En | MEDLINE | ID: mdl-32849550
Cigarette smoke (CS) is the major cause of chronic lung injuries, such as chronic obstructive pulmonary disease (COPD). In patients with severe COPD, tertiary lymphoid follicles containing B lymphocytes and B cell-activating factor (BAFF) overexpression are associated with disease severity. In addition, BAFF promotes adaptive immunity in smokers and mice chronically exposed to CS. However, the role of BAFF in the early phase of innate immunity has never been investigated. We acutely exposed C57BL/6J mice to CS and show early BAFF expression in the bronchoalveolar space and lung tissue that correlates to airway neutrophil and macrophage influx. Immunostaining analysis revealed that neutrophils are the major source of BAFF. We confirmed in vitro that neutrophils secrete BAFF in response to cigarette smoke extract (CSE) stimulation. Antibody-mediated neutrophil depletion significantly dampens lung inflammation to CS exposure but only partially decreases BAFF expression in lung tissue and bronchoalveolar space suggesting additional sources of BAFF. Importantly, BAFF deficient mice displayed decreased airway neutrophil recruiting chemokines and neutrophil influx while the addition of exogenous BAFF significantly enhanced this CS-induced neutrophilic inflammation. This demonstrates that BAFF is a key proinflammatory cytokine and that innate immune cells in particular neutrophils, are an unconsidered source of BAFF in early stages of CS-induced innate immunity.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Neumonía / Contaminación por Humo de Tabaco / Exposición por Inhalación / Factor Activador de Células B / Neutrófilos Tipo de estudio: Prognostic_studies Límite: Animals / Humans / Male Idioma: En Revista: Front Immunol Año: 2020 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Neumonía / Contaminación por Humo de Tabaco / Exposición por Inhalación / Factor Activador de Células B / Neutrófilos Tipo de estudio: Prognostic_studies Límite: Animals / Humans / Male Idioma: En Revista: Front Immunol Año: 2020 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Suiza