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Ménoret A, Buturla JA, Xu MM, Svedova J, Kumar S, Rathinam VAK, Vella AT. T cell-directed IL-17 production by lung granular γδ T cells is coordinated by a novel IL-2 and IL-1β circuit. Mucosal Immunol 2018; 11:1398-1407. [PMID: 29907868 PMCID: PMC6668340 DOI: 10.1038/s41385-018-0037-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/29/2018] [Accepted: 04/20/2018] [Indexed: 02/04/2023]
Abstract
Immune-mediated lung is considered the result of an exacerbated innate injury immune response, although a role for adaptive lymphocytes is emerging. αβ T cells specific for S. aureus enterotoxin A orchestrate a Tγδ17 response during lung injury. However, the mechanism driving IL-17 production is unclear. Here, we show a role for IL-2 triggering IL-17 production by lung granular γδ T cells as IL-17 synthesis and neutrophil recruitment was reduced by IL-2 blocking mAbs in vitro and in vivo. Mass cytometry analysis revealed that lung γδ T cells responded directly to IL-2 as evident from STAT5 phosphorylation and RoRγt expression. IL-2 receptor blocking mAbs and JAK inhibition impaired STAT5 phosphorylation and IL-17 release. Moreover, inhalation of S. aureus enterotoxin A induced IL-2 secretion and caspase-1-dependent IL-1β activation to drive IL-17 production. This T-cell-mediated inflammasome-dependent IL-17 response is maximum when lung Tγδ17 cells were sequentially stimulated first with IL-2 then IL-1β. Interestingly, when IL-2 is given therapeutically to cancer patients it carries a known risk of lung injury that is largely indistinguishable from that seen in sepsis. Hence, this novel mechanism reveals therapeutic targets treating both acute lung injury and high-dose IL-2 toxicity in cancer.
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Affiliation(s)
- Antoine Ménoret
- Department of Immunology, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA;,Institute for Systems Genomics, UConn Health, 400 Farmington Avenue, Farmington, CT 06030, USA and
| | - James A. Buturla
- Department of Internal Medicine, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Maria M. Xu
- Department of Immunology, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Julia Svedova
- Department of Immunology, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Sanjeev Kumar
- Department of Immunology, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Vijay A. K. Rathinam
- Department of Immunology, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Anthony T. Vella
- Department of Immunology, UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA
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