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  • Title: Rapid ex vivo isolation and long-term culture of human Th17 cells.
    Author: Streeck H, Cohen KW, Jolin JS, Brockman MA, Meier A, Power KA, Waring MT, Alter G, Altfeld M.
    Journal: J Immunol Methods; 2008 Apr 20; 333(1-2):115-25. PubMed ID: 18314131.
    Abstract:
    T helper (Th) 17 cells are a distinct lineage of CD4+ T cells mediating tissue inflammation through the secretion of IL-17. In addition, it has been shown that the expression of the transcriptional factor RORgammat is responsible for the induction and maintenance of this cell line. Th17 cells are believed to be involved in a variety of autoimmune disorders, but may also play an important role in host defense. Here we describe a novel technique to reproducibly isolate viable Th17 cells based on their IL-17 secreting ability. We confirmed Th17 cell enrichment by quantitative PCR analysis and demonstrate that positively selected cells using this technique express significantly increased mRNA levels of RORgammat, IL-23 receptor and CCR4 when compared to negatively selected cells. Furthermore, we show that purified Th17 cells can be maintained in long-term culture and expand in vitro. In conclusion, this technique will allow for the first time the direct, ex vivo analysis of phenotypic and functional properties of Th17 cells.
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