Cells (Dec 2020)

IL-6 Is Not Absolutely Essential for the Development of a TH17 Immune Response after an Aerosol Infection with <i>Mycobacterium tuberculosis</i> H37rv

  • Kristina Ritter,
  • Jan Christian Sodenkamp,
  • Alexandra Hölscher,
  • Jochen Behrends,
  • Christoph Hölscher

DOI
https://doi.org/10.3390/cells10010009
Journal volume & issue
Vol. 10, no. 1
p. 9

Abstract

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Anti-inflammatory treatment of chronic inflammatory diseases often increases susceptibility to infectious diseases such as tuberculosis (TB). Since numerous chronic inflammatory and autoimmune diseases are mediated by interleukin (IL)-6-induced T helper (TH) 17 cells, a TH17-directed anti-inflammatory therapy may be preferable to an IL-12-dependent TH1 inhibition in order to avoid reactivation of latent infections. To assess, however, the risk of inhibition of IL-6-dependent TH17-mediated inflammation, we examined the TH17 immune response and the course of experimental TB in IL-6- and T-cell-specific gp130-deficient mice. Our study revealed that the absence of IL-6 or gp130 on T cells has only a minor effect on the development of antigen-specific TH1 and TH17 cells. Importantly, these gene-deficient mice were as capable as wild type mice to control mycobacterial infection. Together, in contrast to its key function for TH17 development in other inflammatory diseases, IL-6 plays an inferior role for the generation of TH17 immune responses during experimental TB.

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