CD8+ T cell-mediated airway hyperresponsiveness and inflammation is dependent on CD4+IL-4+ T cells

Toshiyuki Koya, Nobuaki Miyahara, Katsuyuki Takeda, Shigeki Matsubara, Hiroyuki Matsuda, Christina Swasey, Annette Balhorn, Azzeddine Dakhama, Erwin W. Gelfand

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

CD4+ T cells, particularly Th2 cells, play a pivotal role in allergic airway inflammation. However, the requirements for interactions between CD4+ and CD8+ T cells in airway allergic inflammation have not been delineated. Sensitized and challenged OT-1 mice in which CD8 + T cells expressing the transgene for the OVA257-264 peptide (SIINFEKL) failed to develop airway hyperresponsiveness (AHR), airway eosinophilia, Th2 cytokine elevation, or goblet cell metaplasia. OT-1 mice that received naive CD4+IL-4+ T cells but not CD4 +IL-4- T cells before sensitization developed all of these responses to the same degree as wild-type mice. Moreover, recipients of CD4+IL-4+ T cells developed significant increases in the number of CD8+IL-13+ T cells in the lung, whereas sensitized OT-1 mice that received primed CD4+ T cells just before challenge failed to develop these responses. Sensitized CD8-deficient mice that received CD8+ T cells from OT-1 mice that received naive CD4 + T cells before sensitization increased AHR and eosinophil numbers in bronchoalveolar lavage fluid when challenged with allergen. In contrast, sensitized CD8-deficient mice receiving CD8+ T cells from OT-1 mice without CD4+ T cells developed reduced AHR and eosinophil numbers in bronchoalveolar lavage fluid when challenged. These data suggest that interactions between CD4+ and CD8+ T cells, in part through IL-4 during the sensitization phase, are essential to the development of CD8+IL-13+ T cell-dependent AHR and airway allergic inflammation.

Original languageEnglish
Pages (from-to)2787-2796
Number of pages10
JournalJournal of Immunology
Volume179
Issue number5
DOIs
Publication statusPublished - Sep 1 2007

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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