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Sullivan GP, Davidovich P, Muñoz-Wolf N, Ward RW, Hernandez Santana YE, Clancy DM, Gorman A, Najda Z, Turk B, Walsh PT, Lavelle EC, Martin SJ. Myeloid cell-derived proteases produce a proinflammatory form of IL-37 that signals via IL-36 receptor engagement. Sci Immunol 2022; 7:eade5728. [PMID: 36525507 DOI: 10.1126/sciimmunol.ade5728] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Interleukin-1 (IL-1) family cytokines are key barrier cytokines that are typically expressed as inactive, or partially active, precursors that require proteolysis within their amino termini for activation. IL-37 is an enigmatic member of the IL-1 family that has been proposed to be activated by caspase-1 and to exert anti-inflammatory activity through engagement of the IL-18R and SIGIRR. However, here we show that the longest IL-37 isoform, IL-37b, exhibits robust proinflammatory activity upon amino-terminal proteolysis by neutrophil elastase or cathepsin S. In sharp contrast, caspase-1 failed to process or activate IL-37 at concentrations that robustly activated its canonical substrate, IL-1β. IL-37 and IL-36 exhibit high structural homology, and, consistent with this, a K53-truncated form of IL-37, mimicking the cathepsin S-processed form of this cytokine, was found to exert its proinflammatory effects via IL-36 receptor engagement and produced an inflammatory signature practically identical to IL-36. Administration of K53-truncated IL-37b intraperitoneally into wild-type mice also elicited an inflammatory response that was attenuated in IL-36R-/- animals. These data demonstrate that, in common with other IL-1 family members, mature IL-37 can also elicit proinflammatory effects upon processing by specific proteases.
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Affiliation(s)
- Graeme P Sullivan
- Molecular Cell Biology Laboratory, Department of Genetics, Smurfit Institute, Trinity College, Dublin 2, Ireland
| | - Pavel Davidovich
- Molecular Cell Biology Laboratory, Department of Genetics, Smurfit Institute, Trinity College, Dublin 2, Ireland
| | - Natalia Muñoz-Wolf
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland.,4National Children's Research Centre, CHI-Crumlin, Dublin, Ireland
| | - Ross W Ward
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | | | - Danielle M Clancy
- Molecular Cell Biology Laboratory, Department of Genetics, Smurfit Institute, Trinity College, Dublin 2, Ireland
| | - Aoife Gorman
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | - Zaneta Najda
- Molecular Cell Biology Laboratory, Department of Genetics, Smurfit Institute, Trinity College, Dublin 2, Ireland
| | - Boris Turk
- Department of Biochemistry, Molecular and Structural Biology, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Patrick T Walsh
- Department of Clinical Medicine, School of Medicine, Trinity College, Dublin 2, Ireland.,Department of Biochemistry, Molecular and Structural Biology, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Ed C Lavelle
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | - Seamus J Martin
- Molecular Cell Biology Laboratory, Department of Genetics, Smurfit Institute, Trinity College, Dublin 2, Ireland
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Hernandez Santana YE, Irwin N, Walsh PT. IL-36: a therapeutic target for ulcerative colitis? Expert Opin Ther Targets 2022; 26:507-512. [PMID: 35634891 DOI: 10.1080/14728222.2022.2084381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Yasmina E Hernandez Santana
- National Children's Research Centre, Children's Health Ireland Crumlin, Dublin 12, Ireland.,Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Ireland
| | - Naoise Irwin
- National Children's Research Centre, Children's Health Ireland Crumlin, Dublin 12, Ireland.,Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Ireland
| | - Patrick T Walsh
- National Children's Research Centre, Children's Health Ireland Crumlin, Dublin 12, Ireland.,Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Ireland
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Giannoudaki E, Stefanska AM, Lawler H, Leon G, Hernandez Santana YE, Hassan N, Russell SE, Horan R, Sweeney C, Preston RS, Mantovani A, Garlanda C, Fallon PG, Walsh PT. Correction: SIGIRR Negatively Regulates IL-36-Driven Psoriasiform Inflammation and Neutrophil Infiltration in the Skin. J Immunol 2021; 207:2895. [PMID: 34697229 DOI: 10.4049/jimmunol.2100907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
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Giannoudaki E, Stefanska AM, Lawler H, Leon G, Hernandez Santana YE, Hassan N, Russell SE, Horan R, Sweeney C, Preston RS, Mantovani A, Garlanda C, Fallon PG, Walsh PT. SIGIRR Negatively Regulates IL-36-Driven Psoriasiform Inflammation and Neutrophil Infiltration in the Skin. J Immunol 2021; 207:651-660. [PMID: 34253575 DOI: 10.4049/jimmunol.2100237] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/17/2021] [Indexed: 11/19/2022]
Abstract
SIGIRR has been described as a negative regulator of several IL-1R/TLR family members and has been implicated in several inflammatory disease conditions. However, it is unknown whether it can suppress IL-36 family cytokines, which are members of the broader IL-1 superfamily that have emerged as critical orchestrators of psoriatic inflammation in both humans and mice. In this study, we demonstrate that SIGIRR is downregulated in psoriatic lesions in humans and mice, and this correlates with increased expression of IL-36 family cytokines. Using Sigirr -/- mice, we identify, for the first time (to our knowledge), SIGIRR as a negative regulator of IL-36 responses in the skin. Mechanistically, we identify dendritic cells and keratinocytes as the primary cell subsets in which IL-36 proinflammatory responses are regulated by SIGIRR. Both cell types displayed elevated IL-36 responsiveness in absence of SIGIRR activity, characterized by enhanced expression of neutrophil chemoattractants, leading to increased neutrophil infiltration to the inflamed skin. Blockade of IL-36R signaling ameliorated exacerbated psoriasiform inflammation in Sigirr-/- mice and inhibited neutrophil infiltration. These data identify SIGIRR activity as an important regulatory node in suppressing IL-36-dependent psoriatic inflammation in humans and mice.
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Affiliation(s)
- Eirini Giannoudaki
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Anna M Stefanska
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Hazel Lawler
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Gemma Leon
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Yasmina E Hernandez Santana
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Najma Hassan
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Shane E Russell
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Rachel Horan
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Cheryl Sweeney
- School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Roger S Preston
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Alberto Mantovani
- Scientific Institute for Research, Hospitalization and Healthcare, Humanitas Clinical and Research Center, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy; and.,The William Harvey Research Institute, Queen Mary University, London, United Kingdom
| | - Cecilia Garlanda
- Scientific Institute for Research, Hospitalization and Healthcare, Humanitas Clinical and Research Center, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy; and
| | - Padraic G Fallon
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland.,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Patrick T Walsh
- Trinity Translational Medicine Institute, School of Medicine, Trinity College, Dublin, Ireland; .,National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin, Ireland
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