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Interleukin-2/antibody complex expanding Foxp3+ regulatory T cells exacerbates Th2-mediated allergic airway inflammation

  • Hong, Sung-Wook (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • O, Eunju (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Lee, Jun Young (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Yi, Jaeu (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Cho, Kyungjin (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Kim, Juhee (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Kim, Daeun (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Surh, Charles D. (Academy of Immunology and Microbiology, Institute for Basic Science (IBS)) ;
  • Kim, Kwang Soon (Academy of Immunology and Microbiology, Institute for Basic Science (IBS))
  • Received : 2018.11.26
  • Accepted : 2019.03.12
  • Published : 2019.04.30

Abstract

$Foxp3^+$ regulatory $CD4^+$ T (Treg) cells play an essential role in preventing overt immune responses against self and innocuous foreign antigens. Selective expansion of endogenous Treg cells in response to the administration of interleukin (IL)-2/antibody complex, such as the IL-2/JES6-1 complex (IL-2C) in mice, is considered an attractive therapeutic approach to various immune disorders. Here, we investigated the therapeutic potential of IL-2C in allergic airway inflammation models. IL-2C treatment ameliorated Th17-mediated airway inflammation; however, unexpectedly, IL-2C treatment exacerbated Th2-mediated allergic airway inflammation by inducing the selective expansion of Th2 cells and type-2 innate lymphoid cells. We also found that IL-2 signaling is required for the expansion of Th2 cells in lymphoproliferative disease caused by Treg cell depletion. Our data suggest that IL-2C is selectively applicable to the treatment of allergic airway diseases depending on the characteristics of airway inflammation.

Keywords

References

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