T helper 17 cells: Discovery, function, and physiological trigger

Miriam Beer Torchinsky, J. Magarian Blander

Research output: Contribution to journalReview articlepeer-review

65 Scopus citations


In the few years since their discovery, T helper 17 cells (TH17) have been shown to play an important role in host defense against infections, and in tissue inflammation during autoimmunity. TH17 cells produce IL-17, IL-21, IL-10, and IL-22 cytokines, and thus have broad effects on a variety of tissues. Notably, the requirement for the immunosuppressive cytokine TGF-β along with the pro-inflammatory cytokine IL-6 for TH17 differentiation supports the intimate relationship between the TH17 subset and FOXP3+ regulatory T cells. Here, we discuss current knowledge on effector functions and differentiation of the TH17 lineage. Furthermore, we now know of a physiological stimulus for T H17 differentiation: innate immune recognition of cells undergoing apoptosis as a direct result of infection induces unique development of this subset. As our knowledge of TH17 and T regulatory cells grows, we are building on a new framework for the understanding of effector T cell differentiation and the biology of CD4+ T cell adaptive immune responses.

Original languageEnglish
Pages (from-to)1407-1421
Number of pages15
JournalCellular and Molecular Life Sciences
Issue number9
StatePublished - May 2010


  • Apoptosis
  • Autoimmunity
  • Effector T cells
  • Host defense
  • Innate immunity
  • Regulatory T cells
  • T17
  • Tolerance


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