Title |
CCR2 defines in vivo development and homing of IL-23-driven GM-CSF-producing Th17 cells
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Published in |
Nature Communications, October 2015
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DOI | 10.1038/ncomms9644 |
Pubmed ID | |
Authors |
Ervin E. Kara, Duncan R. McKenzie, Cameron R. Bastow, Carly E. Gregor, Kevin A. Fenix, Abiodun D. Ogunniyi, James C. Paton, Matthias Mack, Diana R. Pombal, Cyrill Seillet, Bénédicte Dubois, Adrian Liston, Kelli P. A. MacDonald, Gabrielle T. Belz, Mark J. Smyth, Geoffrey R. Hill, Iain Comerford, Shaun R. McColl |
Abstract |
IL-17-producing helper T (Th17) cells are critical for host defense against extracellular pathogens but also drive numerous autoimmune diseases. Th17 cells that differ in their inflammatory potential have been described including IL-10-producing Th17 cells that are weak inducers of inflammation and highly inflammatory, IL-23-driven, GM-CSF/IFNγ-producing Th17 cells. However, their distinct developmental requirements, functions and trafficking mechanisms in vivo remain poorly understood. Here we identify a temporally regulated IL-23-dependent switch from CCR6 to CCR2 usage by developing Th17 cells that is critical for pathogenic Th17 cell-driven inflammation in experimental autoimmune encephalomyelitis (EAE). This switch defines a unique in vivo cell surface signature (CCR6(-)CCR2(+)) of GM-CSF/IFNγ-producing Th17 cells in EAE and experimental persistent extracellular bacterial infection, and in humans. Using this signature, we identify an IL-23/IL-1/IFNγ/TNFα/T-bet/Eomesodermin-driven circuit driving GM-CSF/IFNγ-producing Th17 cell formation in vivo. Thus, our data identify a unique cell surface signature, trafficking mechanism and T-cell intrinsic regulators of GM-CSF/IFNγ-producing Th17 cells. |
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Demographic breakdown
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Researcher | 21 | 19% |
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Student > Doctoral Student | 7 | 6% |
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Other | 5 | 4% |
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