Volume 99, Issue 1 pp. 65-83
Original Article

Systemic administration of IL-33 induces a population of circulating KLRG1hi type 2 innate lymphoid cells and inhibits type 1 innate immunity against multiple myeloma

Camille Guillerey

Corresponding Author

Camille Guillerey

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

School of Medicine, The University of Queensland, Herston, QLD, Australia

Correspondence

Camille Guillerey, Cancer Immunotherapies Laboratory, Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Brisbane, QLD 4101, Australia.

E-mail: [email protected]

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Kimberley Stannard

Kimberley Stannard

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Jason Chen

Jason Chen

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

School of Medicine, The University of Queensland, Herston, QLD, Australia

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Sophie Krumeich

Sophie Krumeich

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Kim Miles

Kim Miles

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Kyohei Nakamura

Kyohei Nakamura

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Jessica Smith

Jessica Smith

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

School of Environment and Sciences, Griffith University, Brisbane, QLD, Australia

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Yuan Yu

Yuan Yu

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Susanna Ng

Susanna Ng

Immunology and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Heidi Harjunpää

Heidi Harjunpää

School of Medicine, The University of Queensland, Herston, QLD, Australia

Cancer Immunoregulation and Immunotherapy Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Michele WL Teng

Michele WL Teng

Cancer Immunoregulation and Immunotherapy Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Christian Engwerda

Christian Engwerda

Immunology and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

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Gabrielle T Belz

Gabrielle T Belz

Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia

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Mark J Smyth

Mark J Smyth

Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia

School of Medicine, The University of Queensland, Herston, QLD, Australia

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First published: 04 August 2020
Citations: 10

Abstract

Type 2 innate lymphoid cells (ILC2s) are important producers of type 2 cytokines whose role in hematological cancers remains unclear. ILC2s are a heterogeneous population encompassing distinct subsets with different tissue localization and cytokine responsiveness. In this study, we investigated the role of bone marrow (BM) ILC2s and interleukin (IL)-33-stimulated ILC2s in multiple myeloma, a plasma cell malignancy that develops in the BM. We found that myeloma growth was associated with phenotypic and functional alterations of BM ILC2s, characterized by an increased expression of maturation markers and reduced cytokine response to IL-2/IL-33. We identified a population of KLRG1hi ILC2s that preferentially accumulated in the liver and spleen of Il2rg−/− Rag2−/− mice reconstituted with BM ILC2s. A similar population of KLRG1hi ILC2s was observed in the blood, liver and spleen of IL-33-treated wild-type mice. The presence of KLRG1hi ILC2s in ILC2-reconstituted Il2rg−/− Rag2−/− mice or in IL-33-treated wild-type mice was associated with increased eosinophil numbers but had no effect on myeloma progression. Interestingly, while decreased myeloma growth was observed following treatment of Rag-deficient mice with the type 1 cytokines IL-12 and IL-18, this protection was reversed when mice received a combined treatment of IL-33 together with IL-12 and IL-18. In summary, our data indicate that IL-33 treatment induces a population of circulating inflammatory KLRG1hi ILC2s and inhibits type 1 immunity against multiple myeloma. These results argue against therapeutic administration of IL-33 to myeloma patients.

CONFLICT OF INTEREST

MJS has research agreements with Bristol Myers Squibb and Tizona Therapeutics. All other authors declare that they have no conflict of interest.

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