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The journal of immunology : official journal of the American Association of Immunologists v.197 no.8, 2016년, pp.3059 - 3068   SCI SCIE
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Butyrophilin 3A/CD277–Dependent Activation of Human γδ T Cells: Accessory Cell Capacity of Distinct Leukocyte Populations

Nerdal, Patrik Theodor (Institute of Immunology, Christian-Albrechts–University of Kiel and University Hospital Schleswig-Holstein, D-24105 Kiel, Germany ) ; Peters, Christian (Institute of Immunology, Christian-Albrechts–University of Kiel and University Hospital Schleswig-Holstein, D-24105 Kiel, Germany ) ; Oberg, Hans-Heinrich (Institute of Immunology, Christian-Albrechts–University of Kiel and University Hospital Schleswig-Holstein, D-24105 Kiel, Germany ) ; Zlatev, Hristo (School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland ) ; Lettau, Marcus (Institute of Immunology, Christian-Albrechts–University of Kiel and University Hospital Schleswig-Holstein, D-24105 Kiel, Germany ) ; Quabius, Elgar Susanne (Institute of Immunology, Christian-Albrechts–University of Kiel and University Hospital Schleswig-Holstein, D-24105 Kiel, Germany ) ; Sousa, Sofia (School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland ) ; Gonnermann, Daniel (Institute of Immunology, Christian-Albrechts–University of Kiel and University Hospit ) ; Auriola, Seppo ; Olive, Daniel ; Määttä, Jorma ; Janssen, Ottmar ; Kabelitz, Dieter ;
  • 초록  

    Human Vγ9Vδ2 T cells recognize in a butyrophilin 3A/CD277–dependent way microbial ( E )-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMBPP) or endogenous pyrophosphates (isopentenyl pyrophosphate [IPP]). Nitrogen-bisphosphonates such as zoledronic acid (ZOL) trigger selective γδ T cell activation because they stimulate IPP production in monocytes by inhibiting the mevalonate pathway downstream of IPP synthesis. We performed a comparative analysis of the capacity of purified monocytes, neutrophils, and CD4 T cells to serve as accessory cells for Vγ9Vδ2 T cell activation in response to three selective but mechanistically distinct stimuli (ZOL, HMBPP, agonistic anti-CD277 mAb). Only monocytes supported γδ T cell expansion in response to all three stimuli, whereas both neutrophils and CD4 T cells presented HMBPP but failed to induce γδ T cell expansion in the presence of ZOL or anti-CD277 mAb. Preincubation of accessory cells with the respective stimuli revealed potent γδ T cell–stimulating activity of ZOL- or anti-CD277 mAb-pretreated monocytes, but not neutrophils. In comparison with monocytes, ZOL-pretreated neutrophils produced little, if any, IPP and expressed much lower levels of farnesyl pyrophosphate synthase. Exogenous IL-18 enhanced the γδ T cell expansion with all three stimuli, remarkably also in response to CD4 T cells and neutrophils preincubated with anti-CD277 mAb or HMBPP. Our study uncovers unexpected differences between monocytes and neutrophils in their accessory function for human γδ T cells and underscores the important role of IL-18 in driving γδ T cell expansion. These results may have implications for the design of γδ T cell–based immunotherapeutic strategies.


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