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A new paper in @sciencemagazine from #Belkaid lab at #NIH described an #alternative differentiation #pathway for #commensal-specific T cells in presence of inflammation. Do the data presented support conclusions? Let's dive in.
science.sciencemag.org/content/363/64…
science.sciencemag.org/content/363/64…
1. #Commnesal S. epidermidis–specific -#MIIINA:H2-M3+ CD8+ T cells ordinarily differentiate into Tc1 or Tc17 subsets. However, when co-exposed to chitin or sand fly (source of #inflammation), Tc17 subset also produce type II cytokines. 
2. In such condition, type II #cytokines such as IL-5 or IL-13 are produced by CCR6+ Tc17 cells (out of which 30% are IL-17+). However, there is no overlap between IL-17+ and IL-5+/IL-13+ CD8+ T cells. So, the authors conclusion about "paradoxical phenotype" is unsubstantiated.
