Caspase-1–Processed Cytokines IL-1β and IL-18 Promote IL-17 Production by γδ and CD4 T Cells That Mediate Autoimmunity

Lalor, Stephen J.; Dungan, Lara S.; Sutton, Caroline E.; Basdeo, Sharee A.; Fletcher, Jean M.; Mills, Kingston H. G.

doi:10.4049/jimmunol.1003597

Cited by 323 publications

(284 citation statements)

References 34 publications

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“…Therefore, we next investigated whether cytokines known to induce IL-17 production in mature γδ T-cells also participate in the programming of the γδ17 effector fate. Previous work suggested that γδ17 cells differ from their Th17 counterparts in terms of cytokine requirements, with IL-1β, IL-21, and IL-23 implicated as drivers of IL-17 production by γδ17 cells, whereas IL-6 is a key cytokine for Th17 cells 17–19, 32–35 . Therefore, we assessed whether adding combinations of IL-1β, IL-21, and IL-23 to the KN6/MEF co-cultures could result in the functional programming of the γδ17-effector subtype.…”

Section: Resultsmentioning

confidence: 99%

Integration of T‐cell receptor, Notch and cytokine signals programs mouse γδ T‐cell effector differentiation

Zarin

Chen

et al. 2018

Immunol Cell Biol

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γδ T-cells perform a wide range of tissue and disease specific functions that are dependent on the effector cytokines produced by these cells. However, the aggregate signals required for the development of interferon-γ (IFNγ) and interleukin-17 (IL-17) producing γδ T-cells remain unknown. Here, we define the cues involved in the functional programming of γδ T-cells, by examining the roles of T-cell receptor (TCR), Notch, and cytokine-receptor signaling. KN6 γδTCR-transduced Rag2−/− T-cell progenitors were cultured on stromal cells variably expressing TCR and Notch ligands, supplemented with different cytokines. We found that distinct combinations of these signals are required to program IFNγ versus IL-17 producing γδ T cell subsets, with Notch and weak TCR ligands optimally enabling development of γδ17 cells in the presence of IL-1β, IL-21 and IL-23. Notably, these cytokines were also shown to be required for the intrathymic development of γδ17 cells. Together, this work provides a framework of how signals downstream of TCR, Notch and cytokine receptors integrate to program the effector function of IFNγ and IL-17 producing γδ T-cell subsets.

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Section: Resultsmentioning

confidence: 99%

Integration of T‐cell receptor, Notch and cytokine signals programs mouse γδ T‐cell effector differentiation

Zarin

Chen

et al. 2018

Immunol Cell Biol

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“…IL-17 could not be detected in PBMCs or in purified gd T cells, even in the presence of IL-1b and IL-18, which have been implicated in the regulation of IL-17 production in humans and mice (46,53), respectively. The requirements for the differentiation of IL-17-producing human Vg9Vd2 T cells were defined recently (46).…”

Section: Discussionmentioning

confidence: 99%

Essential Requirements of Zoledronate-Induced Cytokine and γδ T Cell Proliferative Responses

Nussbaumer

Gruenbacher

Gander

et al. 2013

The Journal of Immunology

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The potent nitrogen-containing bisphosphonate zoledronate inhibits farnesyl pyrophosphate synthase, a key enzyme of the mevalonate pathway that is often hyperactive in malignant cells. Zoledronate activates human Vγ9Vδ2 T cells, which are immune sentinels of cell stress and tumors, through upstream accumulation of the cognate Ag isopentenyl pyrophosphate. IL-18 was shown to enhance zoledronate-induced γδ T cell activation. Although monocytes have been considered important accessory cells that provide the Ag isopentenyl pyrophosphate, CD56brightCD11c+ NK cells were postulated to mediate the costimulatory effects of IL-18. We report in this article that downstream depletion of geranylgeranyl pyrophosphate (GGPP), which is required for protein prenylation, caused cell stress in monocytes, followed by caspase-1–mediated maturation and release of IL-18, which, in turn, induced γδ T cell CCL2. Likewise, zoledronate caused a substantial delay in γδ T cell expansion, which could be skipped by GGPP supplementation. Moreover, repletion of GGPP, which prevented acute zoledronate toxicity, and supplementation with IL-18, which strongly upregulated IL-2Rα (CD25) and favored the central memory phenotype, were sufficient to enable zoledronate-induced expansion of highly purified γδ T cells, even when starting cell numbers were as low as 104 γδ T cells. Our study reveals essential components of γδ T cell activation and indicates that exogenous IL-18, which can directly costimulate γδ T cells, eliminates the need for any accessory cells. Our findings will facilitate the generation of robust γδ T cells from small blood or tissue samples for cancer immunotherapy and immune-monitoring purposes.

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“…In this context, ROR γ t expression is up‐regulated by IL‐1 β and IL‐23 in a synergistic manner 20. The inflammatory cytokine IL‐18,53 complement C5a,54 the ligand of Toll‐like receptors 1 and 2, and dectin‐155 also induce IL‐17 in collaboration with IL‐23. Although γδ 17 cells typically behave as innate‐like immune cells, IL‐17 induction by TCR signalling is also reported.…”

Section: The Mechanism Of Il‐17 Production In γδ17 Cellsmentioning

confidence: 99%

Interleukin‐17‐producing γδ T (γδ17) cells in inflammatory diseases

Akitsu

Iwakura

2018

Immunology

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SummaryInterleukin‐17 (IL‐17) is a pro‐inflammatory cytokine and is involved in the development of many diseases. Recent studies have revealed that IL‐17‐producing γδ T cells (γδ17 cells) in addition to IL‐17‐producing CD4+ T cells [T helper type 17 (Th17) cells] are often the main producers of IL‐17 in mouse models of inflammatory diseases. γδ T cells are functionally committed during intra‐thymic differentiation. γδ thymocytes capable of producing IL‐17, which express the transcription factor retinoic‐acid‐receptor‐related orphan receptor γt and the signature cytokine receptor IL‐23R, leave the thymus, and produce IL‐17 rapidly by the stimulation with IL‐1β and IL‐23 in the periphery. Therefore, γδ17 cells play important roles in the early phase of host defence against pathogens and in inflammatory diseases. γδ T cells that can produce IL‐17 are also increased in the skin of patients with psoriasis and in peripheral blood of patients with ankylosing sclerosis. Indeed, the therapy targeting IL‐17 has been approved or is in clinical trials, and proved to be very efficient to treat psoriasis, psoriatic arthritis and ankylosing sclerosis. In this review, we discuss recent knowledge about the pathophysiological function of γδ17 cells in infection and inflammatory diseases and therapeutic advances targeting IL‐17.

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Caspase-1–Processed Cytokines IL-1β and IL-18 Promote IL-17 Production by γδ and CD4 T Cells That Mediate Autoimmunity

Cited by 323 publications

References 34 publications

Integration of T‐cell receptor, Notch and cytokine signals programs mouse γδ T‐cell effector differentiation

Integration of T‐cell receptor, Notch and cytokine signals programs mouse γδ T‐cell effector differentiation

Essential Requirements of Zoledronate-Induced Cytokine and γδ T Cell Proliferative Responses

Interleukin‐17‐producing γδ T (γδ17) cells in inflammatory diseases

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