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Venken K, Decruy T, Sparwasser T, Elewaut D. Tregs protect against invariant NKT cell-mediated autoimmune colitis and hepatitis. Immunology 2024; 171:277-285. [PMID: 37984469 DOI: 10.1111/imm.13718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
Immunomodulatory T cells play a pivotal role in protection against (auto)immune-mediated diseases that open perspectives for therapeutic modulation. However, how immune regulatory networks operate in vivo is less understood. To this end, we focused on FOXP3+CD4+CD25+ regulatory T cells (Tregs) and invariant natural killer T (iNKT) cells, two lymphocyte populations that independently regulate adaptive and innate immune responses. In vitro, a functional interplay between Tregs and iNKT cells has been described, but whether Tregs modulate the function and phenotype of iNKT cell subsets in vivo and whether this controls iNKT-mediated autoimmunity is unclear. Taking advantage of the conditional depletion of Tregs, we examined the in vivo interplay between iNKT and Treg cells in steady state and in preclinical models of liver and gut autoimmunity. Under non-inflamed conditions, Treg depletion enhanced glycolipid-mediated iNKT cell responses, with a general impact on Type 1, 2 and 17 iNKT subsets. Moreover, in vivo iNKT activation in the absence of Tregs suppressed the induction of iNKT anergy, consistent with a reduction in programmed cell death receptor 1 (PD-1) expression. Importantly, we unveiled a clear role for an in vivo Treg-iNKT crosstalk both in concanavalin A-induced acute hepatitis and oxazolone-induced colitis. Here, the absence of Tregs led to a markedly enhanced liver and gut pathology, which was not observed in iNKT-deficient mice. Taken together, these results provide evidence for a functional interplay between regulatory T cell subsets critical in controlling the onset of autoimmune disease.
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Affiliation(s)
- Koen Venken
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Tine Decruy
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Tim Sparwasser
- Department of Medical Microbiology and Hygiene, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Dirk Elewaut
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
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Mortier C, Quintelier K, De Craemer AS, Renson T, Deroo L, Dumas E, Verheugen E, Coudenys J, Decruy T, Lukasik Z, Van Gassen S, Saeys Y, Hoorens A, Lobatón T, Van den Bosch F, Van de Wiele T, Venken K, Elewaut D. Gut Inflammation in Axial Spondyloarthritis Patients is Characterized by a Marked Type 17 Skewed Mucosal Innate-like T Cell Signature. Arthritis Rheumatol 2023; 75:1969-1982. [PMID: 37293832 DOI: 10.1002/art.42627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/29/2023] [Accepted: 06/06/2023] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Patients with spondyloarthritis (SpA) often present with microscopic signs of gut inflammation, a risk factor for progressive disease. We investigated whether mucosal innate-like T cells are involved in dysregulated interleukin-23 (IL-23)/IL-17 responses in the gut-joint axis in SpA. METHODS Ileal and colonic intraepithelial lymphocytes (IELs), lamina propria lymphocytes (LPLs), and paired peripheral blood mononuclear cells (PBMCs) were isolated from treatment-naive patients with nonradiographic axial SpA with (n = 11) and without (n = 14) microscopic gut inflammation and healthy controls (n = 15) undergoing ileocolonoscopy. The presence of gut inflammation was assessed histopathologically. Immunophenotyping of innate-like T cells and conventional T cells was performed using intracellular flow cytometry. Unsupervised clustering analysis was done by FlowSOM technology. Serum IL-17A levels were measured via Luminex. RESULTS Microscopic gut inflammation in nonradiographic axial SpA was characterized by increased ileal intraepithelial γδ-hi T cells, a γδ-T cell subset with elevated γδ-T cell receptor expression. γδ-hi T cells were also increased in PBMCs of patients with nonradiographic axial SpA versus healthy controls and were strongly associated with Ankylosing Spondylitis Disease Activity Score. The abundance of mucosal-associated invariant T cells and invariant natural killer T cells was unaltered. Innate-like T cells in the inflamed gut showed increased RORγt, IL-17A, and IL-22 levels with loss of T-bet, a signature that was less pronounced in conventional T cells. Presence of gut inflammation was associated with higher serum IL-17A levels. In patients treated with tumor necrosis factor blockade, the proportion of γδ-hi cells and RORγt expression in blood was completely restored. CONCLUSION Intestinal innate-like T cells display marked type 17 skewing in the inflamed gut mucosa of patients with nonradiographic axial SpA. γδ-hi T cells are linked to intestinal inflammation and disease activity in SpA.
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Affiliation(s)
- Céline Mortier
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Katrien Quintelier
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium, Data Mining and Modeling for Biomedicine group, VIB-UGent Center for Inflammation Research, Ghent, Belgium, and Department of Pulmonary Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ann-Sophie De Craemer
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Thomas Renson
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Liselotte Deroo
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Emilie Dumas
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Eveline Verheugen
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Julie Coudenys
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Tine Decruy
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Zuzanna Lukasik
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Sofie Van Gassen
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University and Data Mining and Modeling for Biomedicine group, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Yvan Saeys
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University and Data Mining and Modeling for Biomedicine group, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Anne Hoorens
- Department of Pathology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Triana Lobatón
- Department of Internal Medicine and Pediatrics, Ghent University and Department of Gastroenterology, Ghent University Hospital, Ghent, Belgium
| | - Filip Van den Bosch
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Tom Van de Wiele
- Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Koen Venken
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Dirk Elewaut
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University and Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
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Deprez J, Verbeke R, Meulewaeter S, Aernout I, Dewitte H, Decruy T, Coudenys J, Van Duyse J, Van Isterdael G, Peer D, van der Meel R, De Smedt SC, Jacques P, Elewaut D, Lentacker I. Transport by circulating myeloid cells drives liposomal accumulation in inflamed synovium. Nat Nanotechnol 2023; 18:1341-1350. [PMID: 37430039 DOI: 10.1038/s41565-023-01444-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/07/2023] [Indexed: 07/12/2023]
Abstract
The therapeutic potential of liposomes to deliver drugs into inflamed tissue is well documented. Liposomes are believed to largely transport drugs into inflamed joints by selective extravasation through endothelial gaps at the inflammatory sites, known as the enhanced permeation and retention effect. However, the potential of blood-circulating myeloid cells for the uptake and delivery of liposomes has been largely overlooked. Here we show that myeloid cells can transport liposomes to inflammatory sites in a collagen-induced arthritis model. It is shown that the selective depletion of the circulating myeloid cells reduces the accumulation of liposomes up to 50-60%, suggesting that myeloid-cell-mediated transport accounts for more than half of liposomal accumulation in inflamed regions. Although it is widely believed that PEGylation inhibits premature liposome clearance by the mononuclear phagocytic system, our data show that the long blood circulation times of PEGylated liposomes rather favours uptake by myeloid cells. This challenges the prevailing theory that synovial liposomal accumulation is primarily due to the enhanced permeation and retention effect and highlights the potential for other pathways of delivery in inflammatory diseases.
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Affiliation(s)
- Joke Deprez
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Unit Molecular Immunology and Inflammation, VIB Centre for Inflammation Research, Ghent University and Department of Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - Rein Verbeke
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Sofie Meulewaeter
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Ilke Aernout
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Heleen Dewitte
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Tine Decruy
- Unit Molecular Immunology and Inflammation, VIB Centre for Inflammation Research, Ghent University and Department of Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - Julie Coudenys
- Unit Molecular Immunology and Inflammation, VIB Centre for Inflammation Research, Ghent University and Department of Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - Julie Van Duyse
- VIB Flow Core, VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Gert Van Isterdael
- VIB Flow Core, VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Dan Peer
- Laboratory of Precision Nanomedicine, Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
- Department of Materials Sciences and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
- Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv, Israel
- Cancer Biology Research Center, Tel Aviv University, Tel Aviv, Israel
| | - Roy van der Meel
- Laboratory of Chemical Biology, Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Stefaan C De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Peggy Jacques
- Unit Molecular Immunology and Inflammation, VIB Centre for Inflammation Research, Ghent University and Department of Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - Dirk Elewaut
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
- Unit Molecular Immunology and Inflammation, VIB Centre for Inflammation Research, Ghent University and Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.
| | - Ine Lentacker
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
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4
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Mortier C, Gracey E, Coudenys J, Manuello T, Decruy T, Maelegheer M, Stappers F, Gilis E, Gaublomme D, Van Hoorebeke L, Van Welden S, Ambler C, Hegen M, Symanowicz P, Steyn S, Berstein G, Elewaut D, Venken K. RORγt inhibition ameliorates IL-23 driven experimental psoriatic arthritis by predominantly modulating γδ-T cells. Rheumatology (Oxford) 2023; 62:3169-3178. [PMID: 36661300 DOI: 10.1093/rheumatology/kead022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/19/2022] [Accepted: 01/04/2023] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE Divergent therapeutic outcomes on different disease domains have been noted with IL-23 and IL-17A-blockade in PsA. Therefore, elucidating the role of RORγt, the master regulator of type 17 immune responses, is of potential therapeutic interest. To this end, RORγt inhibition was assessed in combined skin, joint and gut inflammation in vivo, using a PsA model. METHODS We tested the efficacy of a RORγt antagonist in B10.RIII mice challenged with systemic overexpression of IL-23 by hydrodynamic injection of IL-23 enhanced episomal vector (IL-23 EEV). Clinical outcomes were evaluated by histopathology. Bone density and surface erosions were examined using micro-computed tomography. Cytokine production was measured in serum and by intracellular flow cytometry. Gene expression in PsA-related tissues was analysed by qPCR. RESULTS RORγt-blockade significantly ameliorated psoriasis, peripheral arthritis and colitis development in IL-23 EEV mice (improvement of clinical scores and weight loss respectively by 91.8%, 58.2% and 7.0%, P < 0.001), in line with profound suppression of an enhanced type IL-17 immune signature in PsA-affected tissues. Moreover, inflammation-induced bone loss and bone erosions were reduced (P < 0.05 in calcaneus, P < 0.01 in tibia). Sustained IL-23 overexpression resulted in only mild signs of sacroiliitis. Gamma-delta (γδ)-T cells, the dominant source of T cell-derived IL-17A and IL-22, were expanded during IL-23 overexpression, and together with Th17 cells, clearly countered by RORγt inhibition (P < 0.001). CONCLUSION RORγt-blockade shows therapeutic efficacy in a preclinical PsA model with protection towards extra-musculoskeletal manifestations, reflected by a clear attenuation of type 17 cytokine responses by γδ-T cells and Th17 cells.
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Affiliation(s)
- Céline Mortier
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Eric Gracey
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Julie Coudenys
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Teddy Manuello
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Tine Decruy
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Margaux Maelegheer
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Flore Stappers
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Elisabeth Gilis
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Djoere Gaublomme
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Luc Van Hoorebeke
- UGCT, Department of Physics and Astronomy, Ghent University, Ghent, Belgium
| | - Sophie Van Welden
- IBD Research Unit, Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Intestinal Barrier Signaling in Disease and Therapy, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | | | - Martin Hegen
- Inflammation and Immunology Research Unit, Pfizer Inc, Cambridge, MA, USA
| | - Peter Symanowicz
- Inflammation and Immunology Research Unit, Pfizer Inc, Cambridge, MA, USA
| | - Stefan Steyn
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Inc, Cambridge, MA, USA
| | - Gabriel Berstein
- Inflammation and Immunology Research Unit, Pfizer Inc, Cambridge, MA, USA
| | - Dirk Elewaut
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Koen Venken
- Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Unit for Molecular Immunology and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
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5
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Venken K, Jarlborg M, Decruy T, Mortier C, Vlieghe C, Gilis E, De Craemer AS, Coudenys J, Cambré I, Fleury D, Klimowicz A, Van den Bosch F, Hoorens A, Lobaton T, de Roock S, Sparwasser T, Nabozny G, Jacques P, Elewaut D. Distinct immune modulatory roles of regulatory T cells in gut versus joint inflammation in TNF-driven spondyloarthritis. Ann Rheum Dis 2023; 82:1076-1090. [PMID: 37197892 DOI: 10.1136/ard-2022-223757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/19/2023] [Indexed: 05/19/2023]
Abstract
OBJECTIVES Gut and joint inflammation commonly co-occur in spondyloarthritis (SpA) which strongly restricts therapeutic modalities. The immunobiology underlying differences between gut and joint immune regulation, however, is poorly understood. We therefore assessed the immunoregulatory role of CD4+FOXP3+ regulatory T (Treg) cells in a model of Crohn's-like ileitis and concomitant arthritis. METHODS RNA-sequencing and flow cytometry was performed on inflamed gut and joint samples and tissue-derived Tregs from tumour necrosis factor (TNF)∆ARE mice. In situ hybridisation of TNF and its receptors (TNFR) was applied to human SpA gut biopsies. Soluble TNFR (sTNFR) levels were measured in serum of mice and patients with SpA and controls. Treg function was explored by in vitro cocultures and in vivo by conditional Treg depletion. RESULTS Chronic TNF exposure induced several TNF superfamily (TNFSF) members (4-1BBL, TWEAK and TRAIL) in synovium and ileum in a site-specific manner. Elevated TNFR2 messenger RNA levels were noted in TNF∆ARE/+ mice leading to increased sTNFR2 release. Likewise, sTNFR2 levels were higher in patients with SpA with gut inflammation and distinct from inflammatory and healthy controls. Tregs accumulated at both gut and joints of TNF∆ARE mice, yet their TNFR2 expression and suppressive function was significantly lower in synovium versus ileum. In line herewith, synovial and intestinal Tregs displayed a distinct transcriptional profile with tissue-restricted TNFSF receptor and p38MAPK gene expression. CONCLUSIONS These data point to profound differences in immune-regulation between Crohn's ileitis and peripheral arthritis. Whereas Tregs control ileitis they fail to dampen joint inflammation. Synovial resident Tregs are particularly maladapted to chronic TNF exposure.
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Affiliation(s)
- Koen Venken
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Matthias Jarlborg
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Tine Decruy
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Céline Mortier
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Carolien Vlieghe
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Elisabeth Gilis
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Ann-Sophie De Craemer
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Julie Coudenys
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Isabelle Cambré
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Devan Fleury
- Immunology and Respiratory Department, Boehringer Ingelheim Corp Pharmaceutical Research and Development Centre Ridgefield, Ridgefield, Connecticut, USA
| | - Alexander Klimowicz
- Immunology and Respiratory Department, Boehringer Ingelheim Corp Pharmaceutical Research and Development Centre Ridgefield, Ridgefield, Connecticut, USA
| | - Filip Van den Bosch
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Anne Hoorens
- Department of Pathology, University Hospital Ghent, Gent, Belgium
| | - Triana Lobaton
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Gastroenterology unit), Ghent University, Ghent, Belgium
- Department of Gastroenterology, Ghent University Hospital, Ghent, Belgium
| | - Sytze de Roock
- Department of Pediatric Immunology, Center for Molecular and Cellular Intervention CMCI, Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Tim Sparwasser
- University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Gerald Nabozny
- Immunology and Respiratory Department, Boehringer Ingelheim Corp Pharmaceutical Research and Development Centre Ridgefield, Ridgefield, Connecticut, USA
| | - Peggy Jacques
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Dirk Elewaut
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
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6
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Gilis E, Gaublomme D, Staal J, Venken K, Dhaenens M, Lambrecht S, Coudenys J, Decruy T, Schryvers N, Driege Y, Dumas E, Demeyer A, De Muynck A, van Hengel J, Van Hoorebeke L, Deforce D, Beyaert R, Elewaut D. Deletion of Mucosa-Associated Lymphoid Tissue Lymphoma Translocation Protein 1 in Mouse T Cells Protects Against Development of Autoimmune Arthritis but Leads to Spontaneous Osteoporosis. Arthritis Rheumatol 2019; 71:2005-2015. [PMID: 31259485 DOI: 10.1002/art.41029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 06/25/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT-1) plays a crucial role in innate and adaptive immune signaling by modulating the threshold for activation of immune cells, including Treg cells. Therefore, MALT-1 is regarded to be an interesting therapeutic target in several immune-mediated diseases. The goal of this study was to examine the role of MALT-1 in experimental animal models of rheumatoid arthritis (RA). METHODS MALT-1 activation was assessed by measuring cleavage of the deubiquitinase CYLD in lymphocytes from mice with collagen-induced arthritis (CIA). Furthermore, the impact of MALT-1 deficiency on arthritis was evaluated in Malt1KO mice with CIA or with collagen antibody-induced arthritis (CAIA). T cell-specific MALT-1 deficiency was measured in mice with deletion of T cell-specific MALT-1 (Malt1Tcell KO ), and the time-dependent effects of MALT-1 deficiency were assessed in mice with deletion of tamoxifen-inducible T cell-specific MALT-1 (Malt1iTcell KO ). Bone density was determined in MALT-1-deficient mice using micro-computed tomography and femur-bending tests. Reconstitution of Treg cells was performed using adoptive transfer experiments. RESULTS MALT-1 activation was observed in the lymphocytes of mice with CIA. T cell-specific MALT-1 deletion in the induction phase of arthritis (incidence of arthritis, 25% in control mice versus 0% in Malt1iTcell KO mice; P < 0.05), but not in the effector phase of arthritis, completely protected mice against the development of CIA. Consistent with this finding, MALT-1 deficiency had no impact on CAIA, an effector phase model of RA. Finally, mice with MALT-1 deficiency showed a spontaneous decrease in bone density (mean ± SEM trabecular thickness, 46.3 ± 0.7 μm in control mice versus 40 ± 1.1 μm in Malt1KO mice; P < 0.001), which was linked to the loss of Treg cells in these mice. CONCLUSION Overall, these data in murine models of RA highlight MALT-1 as a master regulator of T cell activation, which is relevant to the pathogenesis of autoimmune arthritis. Furthermore, these findings show that MALT-1 deficiency can lead to spontaneous osteoporosis, which is associated with impaired Treg cell numbers.
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Affiliation(s)
- Elisabeth Gilis
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Djoere Gaublomme
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Jens Staal
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Koen Venken
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | | | | | - Julie Coudenys
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Tine Decruy
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Nadia Schryvers
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Yasmine Driege
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Emilie Dumas
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Annelies Demeyer
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | | | | | | | | | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Dirk Elewaut
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
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7
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Janssens J, Bitra A, Wang J, Decruy T, Venken K, van der Eycken J, Elewaut D, Zajonc DM, van Calenbergh S. 4"-O-Alkylated α-Galactosylceramide Analogues as iNKT-Cell Antigens: Synthetic, Biological, and Structural Studies. ChemMedChem 2018; 14:147-168. [PMID: 30556652 DOI: 10.1002/cmdc.201800649] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Indexed: 02/03/2023]
Abstract
Invariant natural killer T-cells (iNKT) are a glycolipid-responsive subset of T-lymphocytes that fulfill a pivotal role in the immune system. The archetypical synthetic glycolipid, α-galactosylceramide (α-GalCer), whose molecular framework is inspired by a group of amphiphilic natural products, remains the most studied antigen for iNKT-cells. Nonetheless, the potential of α-GalCer as an immunostimulating agent is compromised by the fact that this glycolipid elicits simultaneous secretion of Th1- and Th2-cytokines. This has incited medicinal chemistry efforts to identify analogues that are able to perturb the Th1/Th2 balance. In this work, we present the synthesis of an extensive set of 4"-O-alkylated α-GalCer analogues, which were evaluated in vivo for their cytokine induction. We have found that conversion of the 4"-OH group to ether moieties decreases the immunogenic potential in mice relative to α-GalCer. Yet, the benzyl-modified glycolipids are able to produce a distinct pro-inflammatory immune response. The crystal structures suggest an extra hydrophobic interaction between the benzyl moiety and the α2-helix of CD1d.
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Affiliation(s)
- Jonas Janssens
- Laboratory for Medicinal Chemistry, Department of Pharmaceutics (FFW), Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium.,Laboratory for Organic and Bioorganic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), 9000, Ghent, Belgium
| | - Aruna Bitra
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology (LJI), 9420 Athena Circle, La Jolla, CA, 92037, USA
| | - Jing Wang
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology (LJI), 9420 Athena Circle, La Jolla, CA, 92037, USA
| | - Tine Decruy
- Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000, Ghent, Belgium.,VIB Inflammation Research Center, UGent-VIB Research Building FSVM, Technologiepark 927, 9052, Zwijnaarde (Ghent), Belgium
| | - Koen Venken
- Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000, Ghent, Belgium.,VIB Inflammation Research Center, UGent-VIB Research Building FSVM, Technologiepark 927, 9052, Zwijnaarde (Ghent), Belgium
| | - Johan van der Eycken
- Laboratory for Organic and Bioorganic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), 9000, Ghent, Belgium
| | - Dirk Elewaut
- Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000, Ghent, Belgium.,VIB Inflammation Research Center, UGent-VIB Research Building FSVM, Technologiepark 927, 9052, Zwijnaarde (Ghent), Belgium
| | - Dirk M Zajonc
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology (LJI), 9420 Athena Circle, La Jolla, CA, 92037, USA.,Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000, Ghent, Belgium
| | - Serge van Calenbergh
- Laboratory for Medicinal Chemistry, Department of Pharmaceutics (FFW), Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium
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8
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Janssens J, Decruy T, Venken K, Seki T, Krols S, Van der Eycken J, Tsuji M, Elewaut D, Van Calenbergh S. Efficient Divergent Synthesis of New Immunostimulant 4″-Modified α-Galactosylceramide Analogues. ACS Med Chem Lett 2017. [PMID: 28626526 PMCID: PMC5467197 DOI: 10.1021/acsmedchemlett.7b00107] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
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A synthesis strategy
for the swift generation of 4″-modified
α-galactosylceramide (α-GalCer) analogues is described,
establishing a chemical platform to comprehensively investigate the
structure–activity relationships (SAR) of this understudied
glycolipid part. The strategy relies on a late-stage reductive ring-opening
of a p-methoxybenzylidene (PMP) acetal to regioselectively
liberate the 4″-OH position. The expediency of this methodology
is demonstrated by the synthesis of a small yet diverse set of analogues,
which were tested for their ability to stimulate invariant natural
killer T-cells (iNKT) in vitro and in vivo. The introduction of a p-chlorobenzyl
ether yielded an analogue with promising immunostimulating properties,
paving the way for further SAR studies.
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Affiliation(s)
- Jonas Janssens
- Laboratory for Medicinal Chemistry, Department of Pharmaceutics (FFW), Ghent University, Ottergemsesteenweg 460, B-9000 Ghent, Belgium
- Laboratory for Organic and Bioorganic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), B-9000 Ghent, Belgium
| | - Tine Decruy
- Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, B-9000 Ghent, Belgium
- VIB Inflammation Research Center, Ghent University, B-9000 Ghent, Belgium
| | - Koen Venken
- Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, B-9000 Ghent, Belgium
- VIB Inflammation Research Center, Ghent University, B-9000 Ghent, Belgium
| | - Toshiyuki Seki
- Aaron Diamond AIDS Research Center, The Rockefeller University, 1230 York Avenue, New York, New York 10065, United States
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Simon Krols
- Laboratory for Medicinal Chemistry, Department of Pharmaceutics (FFW), Ghent University, Ottergemsesteenweg 460, B-9000 Ghent, Belgium
| | - Johan Van der Eycken
- Laboratory for Organic and Bioorganic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), B-9000 Ghent, Belgium
| | - Moriya Tsuji
- Aaron Diamond AIDS Research Center, The Rockefeller University, 1230 York Avenue, New York, New York 10065, United States
| | - Dirk Elewaut
- Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, B-9000 Ghent, Belgium
- VIB Inflammation Research Center, Ghent University, B-9000 Ghent, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry, Department of Pharmaceutics (FFW), Ghent University, Ottergemsesteenweg 460, B-9000 Ghent, Belgium
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9
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Guillaume J, Seki T, Decruy T, Venken K, Elewaut D, Tsuji M, Van Calenbergh S. Synthesis of C6′′-modified α-C-GalCer analogues as mouse and human iNKT cell agonists. Org Biomol Chem 2017; 15:2217-2225. [DOI: 10.1039/c7ob00081b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
α-GalCer analogues that combine known Th1 polarizing C6′′-modifications with a C-glycosidic linkage were synthesized and evaluated as iNKT cell antigens.
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Affiliation(s)
- Joren Guillaume
- Laboratory for Medicinal Chemistry (FFW)
- Faculty of Pharmaceutical Sciences
- UGent
- B-9000 Ghent
- Belgium
| | - Toshiyuki Seki
- Aaron Diamond AIDS Research Center
- Affiliate of The Rockefeller University
- New York
- USA
| | - Tine Decruy
- Department of Internal Medicine
- Faculty of Medicine and Health Sciences
- Ghent University
- B-9000 Ghent
- Belgium
| | - Koen Venken
- Department of Internal Medicine
- Faculty of Medicine and Health Sciences
- Ghent University
- B-9000 Ghent
- Belgium
| | - Dirk Elewaut
- Department of Internal Medicine
- Faculty of Medicine and Health Sciences
- Ghent University
- B-9000 Ghent
- Belgium
| | - Moriya Tsuji
- Aaron Diamond AIDS Research Center
- Affiliate of The Rockefeller University
- New York
- USA
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry (FFW)
- Faculty of Pharmaceutical Sciences
- UGent
- B-9000 Ghent
- Belgium
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10
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Venken K, Seeuws S, Zabeau L, Jacques P, Decruy T, Coudenys J, Verheugen E, Windels F, Catteeuw D, Drennan M, Van Calenbergh S, Lambrecht BN, Yoshimura A, Tavernier J, Elewaut D. A bidirectional crosstalk between iNKT cells and adipocytes mediated by leptin modulates susceptibility for T cell mediated hepatitis. J Hepatol 2014; 60:175-82. [PMID: 23973929 DOI: 10.1016/j.jhep.2013.08.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 07/26/2013] [Accepted: 08/05/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND & AIMS Immunometabolism is an emerging field of clinical investigation due to the obesity epidemic worldwide. A reciprocal involvement of immune mediators in the body energy metabolism has been recognized for years, but is only partially understood. We hypothesized that the adipokine leptin could provide an important modulator of iNKT cells. METHODS The expression of leptin receptor (LR) on resting and activated iNKT cells was measured by flow cytometry. FACS-sorted hepatic iNKT cells were stimulated with anti-CD3/CD28Ab coated beads in the absence or presence of a neutralizing anti-leptin Ab. Furthermore, we evaluated the outcome of LR blocking nanobody treatment in ConA induced hepatitis and towards metabolic parameters in WT and iNKT cell deficient mice. RESULTS The LR is expressed on iNKT cells and leptin suppresses iNKT cell proliferation and cytokine production in vitro. LR deficient iNKT cells are hyper-responsive further enforcing the role of leptin as an important inhibitor of iNKT cell function. Consistently, in vivo blockade of LR signaling exacerbated ConA hepatitis in wild-type but not in iNKT cell deficient mice, through both Janus kinase (JAK)2 and mitogen-activated protein kinase (MAPK) dependent mechanisms. Moreover, LR inhibition altered fat pad features and was accompanied by insulin resistance, only in wild-type mice. Curiously, this interaction was strictly dependent on MAPK mediated LR signaling in iNKT cells and uncoupled from the more central effects of leptin. CONCLUSIONS Our data support a new concept of immune regulation by which leptin protects towards T cell mediated hepatitis via modulation of iNKT cells.
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Affiliation(s)
- Koen Venken
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Sylvie Seeuws
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Lennart Zabeau
- Flanders Institute for Biotechnology, Department of Medical Protein Research, Faculty of Medicine and Health Sciences, Ghent University, A. Baertsoenkaai 3, 9000 Ghent, Belgium
| | - Peggy Jacques
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Tine Decruy
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Julie Coudenys
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Eveline Verheugen
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Fien Windels
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Dominiek Catteeuw
- Flanders Institute for Biotechnology, Department of Medical Protein Research, Faculty of Medicine and Health Sciences, Ghent University, A. Baertsoenkaai 3, 9000 Ghent, Belgium
| | - Michael Drennan
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry, Faculty of Pharmaceutical Sciences (FFW), Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
| | - Bart N Lambrecht
- Laboratory of Immunoregulation and Mucosal Immunology, Department of Molecular Biomedical Research, VIB and Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo 160-8582, Japan; Japan Science and Technology Agency, CREST, Tokyo 102-0075, Japan
| | - Jan Tavernier
- Flanders Institute for Biotechnology, Department of Medical Protein Research, Faculty of Medicine and Health Sciences, Ghent University, A. Baertsoenkaai 3, 9000 Ghent, Belgium
| | - Dirk Elewaut
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium.
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11
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Venken K, Decruy T, Aspeslagh S, Van Calenbergh S, Lambrecht BN, Elewaut D. Bacterial CD1d-restricted glycolipids induce IL-10 production by human regulatory T cells upon cross-talk with invariant NKT cells. J Immunol 2013; 191:2174-83. [PMID: 23898038 DOI: 10.4049/jimmunol.1300562] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Invariant NKT (iNKT) cells and CD4(+)CD25(+)FOXP3(+) regulatory T cells (Tregs) are important immune regulatory T cells with Ag reactivity to glycolipids and peptides, respectively. However, the functional interplay between these cells in humans is poorly understood. We show that Tregs suppress iNKT cell proliferation induced by CD1d-restricted glycolipids, including bacterial-derived diacylglycerols, as well as by innate-like activation. Inhibition was related to the potency of iNKT agonists, making diacylglycerol iNKT responses very prone to suppression. Cytokine production by iNKT cells was differentially modulated by Tregs because IL-4 production was reduced more profoundly compared with IFN-γ. A compelling observation was the significant production of IL-10 by Tregs after cell contact with iNKT cells, in particular in the presence of bacterial diacylglycerols. These iNKT-primed Tregs showed increased FOXP3 expression and superior suppressive function. Suppression of iNKT cell responses, but not conventional T cell responses, was IL-10 dependent, suggesting that there is a clear difference in mechanism between the Treg-mediated inhibition of these cell types. Our data highlight a physiologically relevant interaction between human iNKT and Tregs upon pathogen-derived glycolipid recognition that has a significant impact on the design of iNKT cell-based therapeutics.
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Affiliation(s)
- Koen Venken
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
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12
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Aspeslagh S, Li Y, Yu E, Decruy T, Van Beneden K, Girardi E, Pauwels N, Trappeniers M, Venken K, Drennan M, Leybaert L, Wang J, Van Calenbergh S, Zajonc D, Elewaut D. Functional and structural characterization of potent Th1 biasing 6′-derivatised α-GalCer iNKT cell agonists, and their superior role in tumor protection. (156.4). The Journal of Immunology 2011. [DOI: 10.4049/jimmunol.186.supp.156.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Invariant natural killer T cells are known to have marked immunomodulatory capacity due to their ability to produce copious amounts of effector cytokines. In this study, we report the first crystal structures of a novel class of strong Th1 biasing structural analogues of α-galactosylceramide by addition of aromatic structures on the 6-OH position of galactose. They are characterized by marked Th1 polarized cytokine patterns that are highly conserved between mice and men, and marked tumour protection in vivo. The strength of the Th1 response correlates well with enhanced lipid binding to CD1d as a result of an induced fit mechanism that binds the aromatic substitution as a third anchor, in addition to the two lipid chains. This induced fit is in contrast to another Th1 biasing glycolipid, α-C-GalCer, whose CD1d binding follows a conventional key-lock principle. These findings highlight the previously unexploited flexibility of CD1d in accommodating galactose-modified glycolipids and broaden the range of glycolipids that can stimulate iNKT cells. We speculate that glycolipids can be designed that induce a similar fit, thereby leading to superior and more sustained iNKT cell responses in vivo.
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Affiliation(s)
| | - Yali Li
- 2La Jolla Inst. for Allergy and Immunol., La Jolla, CA
| | - Esther Yu
- 2La Jolla Inst. for Allergy and Immunol., La Jolla, CA
| | | | | | | | | | | | | | | | | | - Jing Wang
- 2La Jolla Inst. for Allergy and Immunol., La Jolla, CA
| | | | - Dirk Zajonc
- 2La Jolla Inst. for Allergy and Immunol., La Jolla, CA
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13
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Aspeslagh S, Li Y, Yu ED, Pauwels N, Trappeniers M, Girardi E, Decruy T, Van Beneden K, Venken K, Drennan M, Leybaert L, Wang J, Van Calenbergh S, Zajonc DM, Elewaut D. Galactose modified iNKT cell agonists stabilised by a novel structural modification of CD1d lead to marked Th1 polarisation in vivo. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148981.26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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14
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Seeuws S, Jacques P, Van Praet J, Drennan M, Coudenys J, Decruy T, Deschepper E, Lepescheux L, Pujuguet P, Oste L, Vandeghinste N, Brys R, Verbruggen G, Elewaut D. A multiparameter approach to monitor disease activity in collagen-induced arthritis. Arthritis Res Ther 2010; 12:R160. [PMID: 20731827 PMCID: PMC2945063 DOI: 10.1186/ar3119] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Revised: 06/24/2010] [Accepted: 08/23/2010] [Indexed: 11/17/2022] Open
Abstract
Introduction Disease severity in collagen-induced arthritis (CIA) is commonly assessed by clinical scoring of paw swelling and histological examination of joints. Although this is an accurate approach, it is also labour-intensive and the application of less invasive and less time-consuming methods is of great interest. However, it is still unclear which of these methods represents the most discriminating measure of disease activity. Methods We undertook a comparative analysis in which different measurements of inflammation and tissue damage in CIA were studied on an individual mouse level. We compared the current gold standard methods - clinical scoring and histological examination - with alternative methods based on scoring of X-ray or micro-computed tomography (CT) images and investigated the significance of systemically expressed proteins, involved in CIA pathogenesis, that have potential as biomarkers. Results Linear regression analysis revealed a marked association of serum matrix metalloproteinase (MMP)-3 levels with all features of CIA including inflammation, cartilage destruction and bone erosions. This association was improved by combined detection of MMP-3 and anti-collagen IgG2a antibody concentrations. In addition, combined analysis of both X-ray and micro-CT images was found to be predictive for cartilage and bone damage. Most remarkably, validation analysis using an independent data set proved that variations in disease severity, induced by different therapies, could be accurately represented by predicted values based on the proposed parameters. Conclusions Our analyses revealed that clinical scoring, combined with serum MMP-3, anti-collagen IgG2a measurement and scoring of X-ray and micro-CT images, yields a comprehensive insight into the different aspects of disease activity in CIA.
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Affiliation(s)
- Sylvie Seeuws
- Department of Rheumatology, Ghent University, De Pintelaan 185, Ghent, 9000, Belgium.
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15
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Leung L, Tomassi C, Van Beneden K, Decruy T, Trappeniers M, Elewaut D, Gao Y, Elliott T, Al-Shamkhani A, Ottensmeier C, Werner JM, Williams A, Van Calenbergh S, Linclau B. The synthesis and in vivo evaluation of 2',2'-difluoro KRN7000. ChemMedChem 2009; 4:329-34. [PMID: 19137519 DOI: 10.1002/cmdc.200800348] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The synthesis of 2',2'-difluoro KRN7000 is described. In vivo evaluation demonstrates that this fluorinated glycolipid induces CD1d-dependent TCR activation of NKT cells, with a bias towards Th2 cytokine production.
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Affiliation(s)
- Leo Leung
- School of Chemistry, University of Southampton Highfield, Southampton SO17 1BJ, UK
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16
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Trappeniers M, Beneden KV, Decruy T, Hillaert U, Linclau B, Elewaut D, Calenbergh SV. 6′-Derivatised α-GalCer Analogues Capable of Inducing Strong CD1d-Mediated Th1-Biased NKT Cell Responses in Mice. J Am Chem Soc 2008; 130:16468-9. [DOI: 10.1021/ja8064182] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Trappeniers
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Katrien Van Beneden
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Tine Decruy
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Ulrik Hillaert
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Bruno Linclau
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Dirk Elewaut
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium, Laboratory for Molecular Immunology and Inflammation, Ghent University Hospital, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium, and School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
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Leung L, Tomassi C, Van Beneden K, Decruy T, Elewaut D, Elliott T, Al-Shamkhani A, Ottensmeier C, Van Calenbergh S, Werner J, Williams T, Linclau B. Synthesis and in vivo evaluation of 4-deoxy-4,4-difluoro-KRN7000. Org Lett 2008; 10:4433-6. [PMID: 18798635 DOI: 10.1021/ol801663m] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of 4-deoxy-4,4-difluoro-KRN7000 starting from phytosphingosine is described. Key steps include a regioselective benzylation of azidophytosphingosine and a deoxofluor-mediated fluorination of the corresponding 4-ketone. This fluorination failed completely when the adjacent 3-OH was protected as benzyl ether but proceeded well when a benzoyl group was used. The biological evaluation reveals a bias toward Th1 cytokine induction upon Natural Killer T cell activation.
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Affiliation(s)
- Leo Leung
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
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Trappeniers M, Goormans S, Van Beneden K, Decruy T, Linclau B, Al‐Shamkhani A, Elliott T, Ottensmeier C, Werner JM, Elewaut D, Van Calenbergh S. Synthesis and in vitro Evaluation of α‐GalCer Epimers. ChemMedChem 2008; 3:1061-70. [DOI: 10.1002/cmdc.200800021] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Merchiers P, Dooren T, Van der Auwera I, Abulrob A, Lauwereys M, Roland B, Borghraef P, Decruy T, Lox M, Hoogenboom HR, Wera S, Stanimirovic D, Haard H, Leuven F. P4–245: Nanobodies™ targeting amyloid beta as potential therapeutics for Alzheimer's disease. Alzheimers Dement 2006. [DOI: 10.1016/j.jalz.2006.05.1985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Tom Dooren
- Experimental Genetics GroupDept. Human GeneticsKULeuvenB-3000LeuvenBelgium
| | | | | | | | | | - Peter Borghraef
- Experimental Genetics GroupDept. Human GeneticsKULeuvenB-3000LeuvenBelgium
| | | | | | | | | | | | | | - Fred Leuven
- Experimental Genetics GroupDept. Human GeneticsKULeuvenB-3000LeuvenBelgium
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