Scientific article
OA Policy
English

Myeloid cell TNFR1 signaling dependent liver injury and inflammation upon BCG infection

Published inScientific reports, vol. 9, no. 1, 5297
First online date2019-03-28
Abstract

TNF plays a critical role in mononuclear cell recruitment during acute Bacillus Calmette-Guérin (BCG) infection leading to an effective immune response with granuloma formation, but may also cause tissue injury mediated by TNFR1 or TNFR2. Here we investigated the role of myeloid and T cell specific TNFR1 and R2 expression, and show that absence of TNFR1 in myeloid cells attenuated liver granuloma formation and liver injury in response to acute BCG infection, while TNFR2 expressed in myeloid cells contributed only to liver injury. TNFR1 was the main receptor controlling cytokine production by liver mononuclear cells after antigenic specific response, modified CD4/CD8 ratio and NK, NKT and regulatory T cell recruitment. Further analysis of CD11b+ CD3+ phagocytic cells revealed a TCRαβ expressing subpopulation of unknown function, which increased in response to BCG infection dependent of TNFR1 expression on myeloid cells. In conclusion, TNFR1 expressed by myeloid cells plays a critical role in mononuclear cell recruitment and injury of the liver after BCG infection.

Keywords
  • Animals
  • BCG Vaccine / adverse effects
  • BCG Vaccine / immunology
  • Cytokines / immunology
  • Cytokines / metabolism
  • Disease Models, Animal
  • Granuloma / immunology
  • Granuloma / microbiology
  • Granuloma / pathology
  • Hepatitis / immunology
  • Hepatitis / microbiology
  • Hepatitis / pathology
  • Humans
  • Liver / cytology
  • Liver / immunology
  • Liver / pathology
  • Mice
  • Mice, Knockout
  • Mycobacterium bovis / immunology
  • Mycobacterium bovis / pathogenicity
  • Myeloid Cells / immunology
  • Myeloid Cells / metabolism
  • Receptors, Antigen, T-Cell, alpha-beta / metabolism
  • Receptors, Tumor Necrosis Factor, Type I / genetics
  • Receptors, Tumor Necrosis Factor, Type I / metabolism
  • Receptors, Tumor Necrosis Factor, Type II / genetics
  • Receptors, Tumor Necrosis Factor, Type II / metabolism
  • Signal Transduction / immunology
  • T-Lymphocytes, Regulatory / immunology
  • T-Lymphocytes, Regulatory / metabolism
  • Vaccines, Live, Unattenuated / adverse effects
Citation (ISO format)
CHAVEZ GALAN, Leslie et al. Myeloid cell TNFR1 signaling dependent liver injury and inflammation upon BCG infection. In: Scientific reports, 2019, vol. 9, n° 1, p. 5297. doi: 10.1038/s41598-019-41629-9
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Article (Published version)
Secondary files (1)
Supplemental data
accessLevelPublic
Identifiers
Additional URL for this publicationhttps://www.nature.com/articles/s41598-019-41629-9
Journal ISSN2045-2322
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