Time course of mycobacterial infection of dendritic cells in the lungs of intranasally infected mice. (Articolo in rivista)

Type
Label
  • Time course of mycobacterial infection of dendritic cells in the lungs of intranasally infected mice. (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.tube.2004.09.006 (literal)
Alternative label
  • Reljic R; Di Sano C; Crawford C; Dieli F; Challacombe S; Ivanyi J. (2005)
    Time course of mycobacterial infection of dendritic cells in the lungs of intranasally infected mice.
    in Tuberculosis (Edinb.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Reljic R; Di Sano C; Crawford C; Dieli F; Challacombe S; Ivanyi J. (literal)
Pagina inizio
  • 81 (literal)
Pagina fine
  • 88 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 85 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department for Oral Medicine and Pathology, Guy's Campus of King's College, London, UK Department of Biopathology, University of Palermo, Palermo, Italy (literal)
Titolo
  • Time course of mycobacterial infection of dendritic cells in the lungs of intranasally infected mice. (literal)
Abstract
  • Setting: Dendritic cells (DC) could regulate between the protective and pathogenic immune responses following tuberculous infection. In this paper we investigated if their early infection in the lungs represents a plausible alternative to cross-priming with mycobacterial antigens acquired from infected macrophages. Objective: To determine the extent and time course of infection of lung DCs following intranasal inoculation of BALB/c mice with green fluorescent protein (GFP) tagged Bacillus Calmette-Guerin (BCG). Results: A fraction of GFP-BCG infected lung cells were classified as monocytic DCs with the CD11c(+)IA(+)33D1(+)CD8a(-) phenotype. These cells represented 5-18% of the total GFP(+) cells, the bulk of which were macrophages. The infected DCs could be separated by cell size into two fractions with similar cell surface staining properties during the 2-72 h period after infection. An unexpected difference was observed for the time course of infection between DCs and macrophages: DC infection peaked at 48h followed by decline at 72h, while the proportion of infected macrophages remained steady during the same period. Conclusion: The presented results are direct evidence that monocytic DCs are recruited to the lungs and take up live bacilli within 48 h of intranasal infection with GFP-BCG. This finding is pertinent for the regulation of pulmonary and systemic immune responses and possibly for the dissemination of mycobacterial infection by DCs. (C) (literal)
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