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Bernabei I, Faure E, Romani M, Wegrzyn J, Brinckmann J, Chobaz V, So A, Hugle T, Busso N, Nasi S. Inhibiting Lysyl Oxidases prevents pathologic cartilage calcification. Biomed Pharmacother 2024; 171:116075. [PMID: 38183742 DOI: 10.1016/j.biopha.2023.116075] [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: 10/13/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/08/2024] Open
Abstract
Lysyl oxidases (LOX(L)) are enzymes that catalyze the formation of cross-links in collagen and elastin fibers during physiologic calcification of bone. However, it remains unknown whether they may promote pathologic calcification of articular cartilage, an important hallmark of debilitating arthropathies. Here, we have studied the possible roles of LOX(L) in cartilage calcification, related and not related to their cross-linking activity. We first demonstrated that inhibition of LOX(L) by β-aminoproprionitrile (BAPN) significantly reduced calcification in murine and human chondrocytes, and in joint of meniscectomized mice. These BAPN's effects on calcification were accounted for by different LOX(L) roles. Firstly, reduced LOX(L)-mediated extracellular matrix cross-links downregulated Anx5, Pit1 and Pit2 calcification genes. Secondly, BAPN reduced collagen fibrotic markers Col1 and Col3. Additionally, LOX(L) inhibition blocked chondrocytes hypertrophic differentiation (Runx2 and COL10), pro-inflammatory IL-6 release and reactive oxygen species (ROS) production, all triggers of chondrocyte calcification. Through unbiased transcriptomic analysis we confirmed a positive correlation between LOX(L) genes and genes for calcification, hypertrophy and extracellular matrix catabolism. This association was conserved throughout species (mouse, human) and tissues that can undergo pathologic calcification (kidney, arteries, skin). Overall, LOX(L) play a critical role in the process of chondrocyte calcification and may be therapeutic targets to treat cartilage calcification in arthropathies.
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Affiliation(s)
- Ilaria Bernabei
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Elodie Faure
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Mario Romani
- Aging and Bone Metabolism Laboratory, Service of Geriatric Medicine & Geriatric Rehabilitation, Department of Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Julien Wegrzyn
- Department of Orthopedic Surgery, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jürgen Brinckmann
- Department of Dermatology and Institute of Virology and Cell Biology, University of Lübeck, Lübeck, Germany
| | - Véronique Chobaz
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Thomas Hugle
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland
| | - Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital and University of Lausanne; Lausanne, Switzerland.
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Faure E, Wegrzyn J, Bernabei I, Falgayrac G, Bertheaume N, Pascart T, Hugle T, Busso N, Nasi S. A new ex vivo human model of osteoarthritis cartilage calcification. Rheumatology (Oxford) 2024:keae064. [PMID: 38290792 DOI: 10.1093/rheumatology/keae064] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 12/04/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
OBJECTIVE Cartilage pathologic calcification is a hallmark of osteoarthritis (OA). Here, we aimed to describe a new ex vivo human model to study the progression of cartilage calcification. METHOD Cartilage explants (n = 11), as well as primary chondrocytes (n = 3), were obtained from OA patients undergoing knee replacement. Explants and chondrocytes were cultured in control (NT) or calcification (CM) medium (supplemented with ascorbic acid and β-glycerophosphate). Calcification was evaluated by micro-CT scan at day 0 and 21 in explants, and by Alizarin red staining in chondrocyte monolayers. Raman spectrometry allowed characterization of the crystal type. Interleukin-6 (IL-6) secretion in explant and cell supernatants was measured by ELISA. Finally, matrix degradation was evaluated by Safranin-O staining of explant sections and by glycosaminoglycans (GAG) release in supernatants. RESULTS Micro-CT scan showed calcifications in all explants at baseline (day 0), which in the CM group increased significantly in number and size after 21 days compared with the NT group. Raman spectrometry revealed that crystals were exclusively basic calcium phosphate crystals (carbonated hydroxyapatite) both in NT and CM. IL-6 secretion was significantly increased in calcifying conditions. Finally, CM significantly increased cartilage catabolism as assessed by decreased Safranin-O staining of tissue explants and increased GAG release in supernatants. CM effects (enhanced calcification, IL-6 secretion and proteoglycans turn-over) were recapitulated in vitro in OA chondrocytes. CONCLUSIONS We have described a new ex vivo human model of cartilage calcification that can summurize the triad of events seen during osteoarthritis progression, i.e. calcification, inflammation, and cartilage degradation. This model will allow the identification of new anti-calcification compounds.
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Affiliation(s)
- Elodie Faure
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Julien Wegrzyn
- Service of Orthopedics, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Ilaria Bernabei
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | | | | | - Tristan Pascart
- Univ. Lille, CHU Lille, Univ. Littoral Côte d'Opale, Lille, France
- Department of Rheumatology, Lille Catholic Hospitals and Lille Catholic University, Lille, France
| | - Thomas Hugle
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
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Bernabei I, Hansen U, Ehirchiou D, Brinckmann J, Chobaz V, Busso N, Nasi S. CD11b Deficiency Favors Cartilage Calcification via Increased Matrix Vesicles, Apoptosis, and Lysyl Oxidase Activity. Int J Mol Sci 2023; 24:ijms24119776. [PMID: 37298730 DOI: 10.3390/ijms24119776] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/31/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Pathological cartilage calcification is a hallmark feature of osteoarthritis, a common degenerative joint disease, characterized by cartilage damage, progressively causing pain and loss of movement. The integrin subunit CD11b was shown to play a protective role against cartilage calcification in a mouse model of surgery-induced OA. Here, we investigated the possible mechanism by which CD11b deficiency could favor cartilage calcification by using naïve mice. First, we found by transmission electron microscopy (TEM) that CD11b KO cartilage from young mice presented early calcification spots compared with WT. CD11b KO cartilage from old mice showed progression of calcification areas. Mechanistically, we found more calcification-competent matrix vesicles and more apoptosis in both cartilage and chondrocytes isolated from CD11b-deficient mice. Additionally, the extracellular matrix from cartilage lacking the integrin was dysregulated with increased collagen fibrils with smaller diameters. Moreover, we revealed by TEM that CD11b KO cartilage had increased expression of lysyl oxidase (LOX), the enzyme that catalyzes matrix crosslinks. We confirmed this in murine primary CD11b KO chondrocytes, where Lox gene expression and crosslinking activity were increased. Overall, our results suggest that CD11b integrin regulates cartilage calcification through reduced MV release, apoptosis, LOX activity, and matrix crosslinking. As such, CD11b activation might be a key pathway for maintaining cartilage integrity.
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Affiliation(s)
- Ilaria Bernabei
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Uwe Hansen
- Institute for Musculoskeletal Medicine, University Hospital of Münster, 48149 Münster, Germany
| | - Driss Ehirchiou
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Jürgen Brinckmann
- Department of Dermatology, University of Lübeck, 23562 Lübeck, Germany
| | - Veronique Chobaz
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, 1011 Lausanne, Switzerland
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Halfon M, Zhang L, Ehirchiou D, Pandian VD, Dahdal S, Huynh-Do U, Pasch A, Ribi C, Busso N. ITGAM rs1143679 Variant in Systemic Lupus Erythematosus Is Associated with Increased Serum Calcification Propensity. Genes (Basel) 2023; 14:genes14051105. [PMID: 37239465 DOI: 10.3390/genes14051105] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
OBJECTIVES CD11B/ITGAM (Integrin Subunit α M) mediates the adhesion of monocytes, macrophages, and granulocytes and promotes the phagocytosis of complement-coated particles. Variants of the ITGAM gene are candidates for genetic susceptibility to systemic lupus erythematosus (SLE). SNP rs1143679 (R77H) of CD11B particularly increases the risk of developing SLE. Deficiency of CD11B is linked to premature extra-osseous calcification, as seen in the cartilage of animals with osteoarthritis. Serum calcification propensity measured by the T50 test is a surrogate marker for systemic calcification and reflects increased cardiovascular (CV) risk. We aimed to assess whether the CD11B R77H gene variant is associated with a higher serum calcification propensity (i.e., a lower T50 value) in SLE patients compared to the wild-type allele (WT). METHODS Cross-sectional study incorporating adults with SLE genotyped for the CD11B variant R77H and assessed for serum calcification propensity with the T50 method. Participants were included in a multicenter trans-disciplinary cohort and fulfilled the 1997 revised American College of Rheumatology (ACR) criteria for SLE. We used descriptive statistics for comparing baseline characteristics and sequential T50 measurements in subjects with the R77H variant vs. WT CD11B. RESULTS Of the 167 patients, 108 (65%) were G/G (WT), 53 (32%) were G/A heterozygous, and 6 (3%) were A/A homozygous for the R77H variant. A/A patients cumulated more ACR criteria upon inclusion (7 ± 2 vs. 5 ± 1 in G/G and G/A; p = 0.02). There were no differences between the groups in terms of global disease activity, kidney involvement, and chronic renal failure. Complement C3 levels were lower in A/A individuals compared to others (0.6 ± 0.08 vs. 0.9 ± 0.25 g/L; p = 0.02). Baseline T50 did not differ between the groups (A/A 278 ± 42' vs. 297 ± 50' in G/G and G/A; p = 0.28). Considering all sequential T50 test results, serum calcification propensity was significantly increased in A/A individuals compared to others (253 ± 50 vs. 290 ± 54; p = 0.008). CONCLUSIONS SLE patients with homozygosity for the R77H variant and repeated T50 assessment displayed an increased serum calcification propensity (i.e., a lower T50) and lower C3 levels compared to heterozygous and WT CD11B, without differing with respect to global disease activity and kidney involvement. This suggests an increased CV risk in SLE patients homozygous for the R77H variant of CD11B.
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Affiliation(s)
- Matthieu Halfon
- Transplantation Center, Lausanne University Hospital, 1010 Lausanne, Switzerland
| | - Li Zhang
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Driss Ehirchiou
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, University of Lausanne, 1010 Lausanne, Switzerland
| | - Vishnuprabu Durairaj Pandian
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Suzan Dahdal
- Division of Nephrology and Hypertension, University Hospital Bern Inselspital, 3010 Bern, Switzerland
| | - Uyen Huynh-Do
- Division of Nephrology and Hypertension, University Hospital Bern Inselspital, 3010 Bern, Switzerland
- Swiss Systemic Lupus Erythematosus Cohort Study
| | - Andreas Pasch
- Department of Physiology and Pathophysiology, Linz University, 4040 Linz, Austria
| | - Camillo Ribi
- Swiss Systemic Lupus Erythematosus Cohort Study
- Division of Immunology and Allergy, Department of Medicine, Lausanne University Hospital, University of Lausanne, 1010 Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, University of Lausanne, 1010 Lausanne, Switzerland
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Abstract
Pathological calcification of cartilage is a hallmark of osteoarthritis (OA). Calcification can be observed both at the cartilage surface and in its deeper layers. The formation of calcium-containing crystals, typically basic calcium phosphate (BCP) and calcium pyrophosphate dihydrate (CPP) crystals, is an active, highly regulated and complex biological process that is initiated by chondrocytes and modified by genetic factors, dysregulated mitophagy or apoptosis, inflammation and the activation of specific cellular-signalling pathways. The links between OA and BCP deposition are stronger than those observed between OA and CPP deposition. Here, we review the molecular processes involved in cartilage calcification in OA and summarize the effects of calcium crystals on chondrocytes, synovial fibroblasts, macrophages and bone cells. Finally, we highlight therapeutic pathways leading to decreased joint calcification and potential new drugs that could treat not only OA but also other diseases associated with pathological calcification.
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Affiliation(s)
- Ilaria Bernabei
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland.
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
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Hügle T, Nasi S, Ehirchiou D, Omoumi P, So A, Busso N. Fibrin deposition associates with cartilage degeneration in arthritis. EBioMedicine 2022; 81:104081. [PMID: 35660787 PMCID: PMC9163430 DOI: 10.1016/j.ebiom.2022.104081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 05/11/2022] [Accepted: 05/11/2022] [Indexed: 12/04/2022] Open
Abstract
Background Cartilage damage in inflammatory arthritis is attributed to inflammatory cytokines and pannus infiltration. Activation of the coagulation system is a well known feature of arthritis, especially in rheumatoid arthritis (RA). Here we describe mechanisms by which fibrin directly mediates cartilage degeneration. Methods Fibrin deposits were stained on cartilage and synovial tissue of RA and osteoarthritis (OA) patients and in murine adjuvant-induced arthritis (AIA) in wild-type or fibrinogen deficient mice. Fibrinogen expression and procoagulant activity in chondrocytes were evaluated using qRT-PCR analysis and turbidimetry. Chondro-synovial adhesion was studied in co-cultures of human RA cartilage and synoviocytes, and in the AIA model. Calcific deposits were stained in human RA and OA cartilage and in vitro in fibrinogen-stimulated chondrocytes. Findings Fibrin deposits on cartilage correlated with the severity of cartilage damage in human RA explants and in AIA in wild-type mice, whilst fibrinogen deficient mice were protected. Fibrin upregulated Adamts5 and Mmp13 in chondrocytes. Chondro-synovial adhesion only occurred in fibrin-rich cartilage areas and correlated with cartilage damage. In vitro, autologous human synoviocytes, cultured on RA cartilage explants, adhered exclusively to fibrin-rich areas. Fibrin co-localized with calcification in human RA cartilage and triggered chondrocyte mineralization by inducing pro-calcification genes (Anx5, Pit1, Pc1) and the IL-6 cytokine. Similar fibrin-mediated mechanisms were observed in OA models, but to a lesser extent and without pseudo-membranes formation. Interpretation In arthritis, fibrin plaques directly impair cartilage integrity via a triad of catabolism, adhesion, and calcification. Funding None.
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Hügle T, Nasi S, Ehirchiou D, Omoumi P, So A, Busso N. POS0393 FIBRIN DEPOSITION IS AN ACTIVE TRIGGER OF CARTILAGE DEGENERATION IN RHEUMATOID ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Fibrin(ogen) maintains inflammation in various disorders but has never been linked to cartilage damage in rheumatoid arthritis (RA) or other forms of inflammatory arthritis.Objectives:To investigate the role of fibrin deposition on cartilage integrity in arthritis.Methods:Fibrin deposition on knee cartilage was analyzed by immunohistochemistry in RA patients and in murine adjuvant-induced arthritis (AIA). In chondrocytes, fibrinogen expression (Fgα, Fgβ, Fgγ) and procoagulant activity were evaluated by qRT-PCR and turbidimetry respectively. Fibrin-induced catabolic genes were assessed by qRT-PCR in chondrocytes. Fibrin-mediated chondro-synovial adhesion (CSA) with subsequent cartilage tears was studied in co-cultures of human RA cartilage with autologous synoviocytes, in the AIA model, and by MRI. The link between fibrin and calcification was examined in human RA cartilage stained for calcific deposits and in vitro in fibrinogen-stimulated chondrocytes.Results:Fibrin deposition on cartilage correlated with the severity of cartilage damage in human RA explants and in AIA wildtype (WT) mice, while fibrinogen deficient (Fg-/-) mice were protected. Accordingly, fibrin upregulated catabolic enzymes (Adamts5 and Mmp13) in chondrocytes. Secondly, CSA was present in fibrin-rich and damaged cartilage in AIA WT but not in Fg-/- mice. In line, autologous human synoviocytes, cultured on RA cartilage explants, adhered exclusively to fibrin-positive degraded areas. Gadolinium-enhanced MRI of human joints showed contrast-enhancement along cartilage surface in RA patients but not in controls. Finally, fibrin co-localized with calcification in human RA cartilage and triggered chondrocyte mineralization inducing pro-calcification genes (Anx5, Pit1, Pc1) and cytokine (IL-6). Although at a much lesser extent, we observed similar fibrin-mediated mechanisms in osteoarthritis (OA).Conclusion:Fibrin deposition directly impacts on cartilage integrity via induction of catabolism, mechanical stress, and calcification. Potentially, fibrin is a key factor of cartilage damage occurring in RA as a secondary consequence of inflammation.Disclosure of Interests:None declared
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Bernabei I, Kronenberg D, Stange R, Bertrand J, Hügle T, So A, Busso N, Nasi S. POS0041 THE GASOTRANSMITTER HYDROGEN SULFIDE (H2S) IS PROTECTIVE AGAINST CALCIFIC TENDINOPATHY (CT). Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Pathological (or heterotopic) calcification is the deposition of calcium-containing crystals in soft tissues that normally do not calcify. The deposition of these crystals in tendons such as the rotator cuff and the Achilles tendon is known as calcific tendinopathy (CT). CT is a painful condition, which increases tendon rupture rate and leads to disability.Objectives:To understand what inhibits calcification, in order to provide new strategies to treat a condition for which existing therapies are ineffective.Methods:We investigated the role of the gasotransmitter hydrogen sulfide (H2S), and in particular of the H2S-producing enzyme cystathionine γ-lyase (CSE) in CT. In vitro, we induced calcification in tenocytes from WT and CSE KO mice or we treated WT tenocytes with different H2S donors. In vivo, calcification was assessed in a surgery-induced murine model of CT (tenotomy of the Achilles tendon) and in a spontaneous model of CT (aging). Samples obtained from patients with rotator cuff or Achilles tendon CT were also analyzed. To investigate the underlying mechanisms of the CSE-H2S effect, we focused on the bone morphogenic proteins (BMPs) pathway. We additionally explored if altered extracellular matrix (ECM) organization, due to lysyl oxidase (LOX) activity and aberrant collagen-crosslinks, could also be involved in CT. In this context, we studied if H2S could affect LOX expression and activity.Results:In vitro, tenocyte calcification was inhibited by exogenous H2S-donors, while it was exacerbated in CSE KO tenocytes. The protective role of CSE-H2S was confirmed in vivo. In aged mice, microtomography analysis revealed exacerbated Achilles tendon calcification in CSE KO mice compared to WT. In the surgery-induced model of CT, an inverse correlation between calcification and CSE expression in operated Achilles tendon was seen over time. Similarly, inversed correlation between calcification and CSE expression was found in human CT samples.Reduced calcification in tenocytes exposed to H2S was accompanied by decreased expression of genes coding for BMP2, BMP4 and decreased activation of the BMP signaling pathway (pSMAD1/5/8). On the contrary, BMPs expression and BMPs-pathway activation were exacerbated in CSE KO tenocytes compared to WT tenocytes.We next investigated whether ECM disorganization could play a role in CT. Tenocytes cultured in calcification media and treated with the pan-inhibitor of lysyl oxidases (LOX, LOXL1-4) β-aminopropionitrile (BAPN) showed decreased calcification. This pointed to a potential beneficial role of LOX inhibition, therefore decreased collagen-crosslinks, in CT. By analysis of LOXs gene expression in WT and CSE KO tenocytes cultured in calcifying condition, we found much higher expression (4-fold) of LOX, LOL2 and LOXL4 in CSE KO tenocytes. Moreover, H2S-donors inhibited LOX activity. Altogether, these results suggest that decreased H2S could lead to aberrant LOX expression and activity, excessive collagen cross-links in the ECM, and ultimately calcification. Further experiments are ongoing to prove these hypotheses.Conclusion:We suggest targeting H2S production by CSE, or supplying an H2S-donor, is of therapeutic relevance to pathological calcification in the context of CT and can modify its disease course.The anti-mineralizing effect of H2S in tendons could be due to both inhibition of the BMPs pathway and suppression of abnormal LOXs activity.Disclosure of Interests:None declared.
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Bernabei I, Sayous Y, Raja AY, Amma MR, Viry A, Steinmetz S, Falgayrac G, van Heeswijk RB, Omoumi P, Pascart T, Stamp LK, Nasi S, Hügle T, Busso N, So AK, Becce F. Multi-energy photon-counting computed tomography versus other clinical imaging techniques for the identification of articular calcium crystal deposition. Rheumatology (Oxford) 2021; 60:2483-2485. [DOI: 10.1093/rheumatology/keab125] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/23/2021] [Indexed: 12/17/2022] Open
Affiliation(s)
- Ilaria Bernabei
- Department of Rheumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Yann Sayous
- Department of Physics and Astronomy, University of Canterbury
| | - Aamir Y Raja
- Department of Radiology, University of Otago, Christchurch, New Zealand
- Department of Physics, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Maya R Amma
- Department of Radiology, University of Otago, Christchurch, New Zealand
| | | | - Sylvain Steinmetz
- Department of Orthopaedics and Traumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Guillaume Falgayrac
- Marrow Adiposity and Bone Laboratory (MABLab), UR 4490, University of Lille, Lille, France
| | - Ruud B van Heeswijk
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Patrick Omoumi
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Tristan Pascart
- Marrow Adiposity and Bone Laboratory (MABLab), UR 4490, University of Lille, Lille, France
- Department of Rheumatology, Lille Catholic University Hospitals, University of Lille, Lille, France
| | - Lisa K Stamp
- Department of Medicine, University of Otago, Christchurch, New Zealand
| | - Sonia Nasi
- Department of Rheumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Thomas Hügle
- Department of Rheumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Nathalie Busso
- Department of Rheumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Alexander K So
- Department of Rheumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Fabio Becce
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Nasi S, Castelblanco M, Chobaz V, Ehirchiou D, So A, Bernabei I, Kusano T, Nishino T, Okamoto K, Busso N. Xanthine Oxidoreductase Is Involved in Chondrocyte Mineralization and Expressed in Osteoarthritic Damaged Cartilage. Front Cell Dev Biol 2021; 9:612440. [PMID: 33634117 PMCID: PMC7900416 DOI: 10.3389/fcell.2021.612440] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/15/2021] [Indexed: 12/19/2022] Open
Abstract
Pathologic calcification of cartilage consists of the formation of basic calcium phosphate (BCP) and/or calcium pyrophosphate dihydrate (CPPD) containing calcium crystals in mature hyaline or articular cartilage and is associated with aging, cartilage injury and likely plays a role in accelerating the pathology of osteoarthritis (OA). The pathways regulating joint calcification, in particular cartilage calcification, are not completely understood, but inflammation and the formation of reactive oxygen species (ROS) are contributory factors. The xanthine oxidase (XO) form of xanthine oxidoreductase (XOR), the key enzyme in xanthine and uric acid metabolism, is a major cellular source of superoxide. We hypothesized that XOR could be implicated in chondrocyte mineralization and cartilage calcification and degradation in OA. We showed both in murine primary chondrocyte and chondrogenic ATDC5 cells, that mineralization was inhibited by two different XOR inhibitors, febuxostat and allopurinol. In addition, XOR inhibition reduced the expression of the pro-mineralizing cytokine interleukin-6 (IL-6). We next generated XOR knock-out chondrocyte cell lines with undetectable XOR expression and XO activity. XOR knock-out chondrocyte cells showed decreased mineralization and reduced alkaline phosphatase (Alp) activity. To assess the precise form of XOR involved, primary chondrocytes of XOR mutant mice expressing either the XDH form (XDH ki) or the XO form (XO ki) were studied. We found that XO ki chondrocytes exhibited increased mineralization compared to XDH ki chondrocytes, and this was associated with enhanced Alp activity, ROS generation and IL-6 secretion. Finally, we found increased XOR expression in damaged vs. undamaged cartilage obtained from OA patients and XOR expression partially co-localized with areas showing pathologic calcification. Altogether, our results suggest that XOR, via its XO form, contribute to chondrocyte mineralization and pathological calcification in OA cartilage.
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Affiliation(s)
- Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Mariela Castelblanco
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Véronique Chobaz
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Driss Ehirchiou
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Ilaria Bernabei
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Teruo Kusano
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Tokyo, Japan
| | - Takeshi Nishino
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Tokyo, Japan
| | - Ken Okamoto
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Tokyo, Japan
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
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11
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Ehirchiou D, Bernabei I, Chobaz V, Castelblanco M, Hügle T, So A, Zhang L, Busso N, Nasi S. CD11b Signaling Prevents Chondrocyte Mineralization and Attenuates the Severity of Osteoarthritis. Front Cell Dev Biol 2020; 8:611757. [PMID: 33392201 PMCID: PMC7775404 DOI: 10.3389/fcell.2020.611757] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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] [Received: 09/29/2020] [Accepted: 12/02/2020] [Indexed: 11/13/2022] Open
Abstract
Osteoarthritis (OA) is a progressive joint disease that is strongly associated with calcium-containing crystal formation (mineralization) by chondrocytes leading ultimately to cartilage calcification. However, this calcification process is poorly understood and treatments targeting the underlying disease mechanisms are lacking. The CD11b/CD18 integrin (Mac-1 or αMβ2), a member of the beta 2 integrin family of adhesion receptors, is critically involved in the development of several inflammatory diseases, including rheumatoid arthritis and systemic lupus erythematosus. We found that in a collagen-induced arthritis, CD11b-deficient mice exhibited increased cartilage degradation compared to WT control animals. However, the functional significance of CD11b integrin signaling in the pathophysiology of chondrocytes remains unknown. CD11b expression was found in the extracellular matrix and in chondrocytes in both healthy and damaged human and murine articular cartilage. Primary murine CD11b KO chondrocytes showed increased mineralization when induced in vitro by secondary calciprotein particles (CPP) and quantified by Alizarin Red staining. This increased propensity to mineralize was associated with an increased alkaline phosphatase (Alp) expression (measured by qRT-PCR and activity assay) and an enhanced secretion of the pro-mineralizing IL-6 cytokine compared to control wild-type cells (measured by ELISA). Accordingly, addition of an anti-IL-6 receptor antibody to CD11b KO chondrocytes reduced significantly the calcification and identified IL-6 as a pro-mineralizing factor in these cells. In the same conditions, the ratio of qRT-PCR expression of collagen X over collagen II, and that of Runx2 over Sox9 (both ratio being indexes of chondrocyte hypertrophy) were increased in CD11b-deficient cells. Conversely, the CD11b activator LA1 reduced chondrocyte mineralization, Alp expression, IL-6 production and collagen X expression. In the meniscectomy (MNX) model of murine knee osteoarthritis, deficiency of CD11b led to more severe OA (OARSI scoring of medial cartilage damage in CD11b: 5.6 ± 1.8, in WT: 1.2 ± 0.5, p < 0.05, inflammation in CD11b: 2.8 ± 0.2, in WT: 1.4 ± 0.5). In conclusion, these data demonstrate that CD11b signaling prevents chondrocyte hypertrophy and chondrocyte mineralization in vitro and has a protective role in models of OA in vivo.
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Affiliation(s)
- Driss Ehirchiou
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Ilaria Bernabei
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Véronique Chobaz
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Mariela Castelblanco
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Thomas Hügle
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Li Zhang
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
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12
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Theodoropoulou K, Wittkowski H, Busso N, Von Scheven-Gête A, Moix I, Vanoni F, Hengten V, Horneff G, Haas JP, Fischer N, Palm-Beden K, Berendes R, Heubner G, Jansson A, Lainka E, Leimgruber A, Morris M, Foell D, Hofer M. Increased Prevalence of NLRP3 Q703K Variant Among Patients With Autoinflammatory Diseases: An International Multicentric Study. Front Immunol 2020; 11:877. [PMID: 32477355 PMCID: PMC7241420 DOI: 10.3389/fimmu.2020.00877] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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] [Received: 11/03/2019] [Accepted: 04/16/2020] [Indexed: 12/23/2022] Open
Abstract
Background: The NLRP3 inflammasome has been recognized as one of the key components of innate immunity. Gain-of-function mutations in the exon 3 of NLRP3 gene have been implicated in inflammatory diseases suggesting the presence of functionally important sites in this region. Q703K (c.2107C>A, p.Gln703Lys, also known in the literature as Q705K) is a common variant of NLRP3, that has been considered to be both clinically unremarkable or disease-causing with a reduced penetrance. Objectives: We aimed to investigate the potential genetic impact of the NLRP3 variant Q703K in patients with recurrent fever presenting with two autoinflammatory diseases: PFAPA (periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis) and CAPS (cryopyrin-associated periodic syndrome), as well as with undefined autoinflammatory disease (uAID). Methods: This is an international multicentric observational retrospective study characterizing the clinical phenotype of patients presenting with recurrent fever suspected to be of auto-inflammatory origin and where the Q703K NLRP3 variant was found. Monocytes of parents of 6 Q703K+ PFAPA patients were studied and levels of pro-inflammatory cytokines produced by monocytes of Q703K+ and Q703K- parents have been compared by ELISA. Results: We report 42 patients with the Q703K NLRP3 genetic variant: 21 were PFAPA patients, 6 had a CAPS phenotype, and 15 had an uAID. The phenotypes of PFAPA, CAPS and uAID were quite similar between Q703K positive and negative patients with the exception of increased prevalence of pharyngitis in the Q703K positive CAPS population compared to the negative one. The in vitro production of IL-1β was not significantly different between Q703K+ and Q703K- monocytes from asymptomatic parents. Conclusion: The evidence we report in our study shows an increased prevalence of NLRP3 Q703K in patients with autoinflammatory diseases, suggesting an association between the Q703K variant and the risk of PFAPA, CAPS and uAID syndromes. However, we did not show a functional effect of this mutation on the inflammasome basal activity.
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Affiliation(s)
- Katerina Theodoropoulou
- Pediatric Rheumatology Unit of Western Switzerland, Pediatric Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland.,Pediatric Department, Geneva University Hospital (HUG), Geneva, Switzerland.,Department of Biochemistry, University of Lausanne (UNIL), Lausanne, Switzerland
| | - Helmut Wittkowski
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital, Muenster, Germany
| | - Nathalie Busso
- Service of Rheumatology, DAL, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Annette Von Scheven-Gête
- Pediatric Rheumatology Unit of Western Switzerland, Pediatric Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland.,Pediatric Department, Geneva University Hospital (HUG), Geneva, Switzerland
| | - Isabelle Moix
- Department of Genetics, SYNLAB, Lausanne, Switzerland
| | - Federica Vanoni
- Pediatric Rheumatology Unit of Western Switzerland, Pediatric Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland.,Pediatric Department, Geneva University Hospital (HUG), Geneva, Switzerland.,Istituto Pediatrico Della Svizzera Italiana, Bellinzona, Switzerland
| | - Veronique Hengten
- Department of General Pediatrics, French Reference Center for Autoinflammatory Diseases (CEREMAIA), Versailles Hospital, Versailles, France
| | - Gerd Horneff
- Asklepios Children's Hospital, St. Augustin, Germany
| | - Johannes-Peter Haas
- German Center for Pediatric and Adolescent Rheumatology, Garmisch-Partenkirchen, Germany
| | - Nadine Fischer
- German Center for Pediatric and Adolescent Rheumatology, Garmisch-Partenkirchen, Germany
| | - Katharina Palm-Beden
- Department of Pediatric Rheumatology, St. Josef-Stift Sendenhorst, Sendenhorst, Germany
| | - Rainer Berendes
- Departement of Pediatric Rheumatology, St. Marien-Childrens-Hospital Landshut, Landshut, Germany
| | - Georg Heubner
- Departement of Pediatrics, Städtisches Klinikum Dresden, Dresden, Germany
| | - Annette Jansson
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital LMU Munich, Munich, Germany
| | - Elke Lainka
- Division of Pediatric Rheumatology, University Hospital Essen, Essen, Germany
| | - Annette Leimgruber
- Service of Immunology and Allergology, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | | | - Dirk Foell
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital, Muenster, Germany
| | - Michaël Hofer
- Pediatric Rheumatology Unit of Western Switzerland, Pediatric Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland.,Pediatric Department, Geneva University Hospital (HUG), Geneva, Switzerland
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13
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Nasi S, Ehirchiou D, Chatzianastasiou A, Nagahara N, Papapetropoulos A, Bertrand J, Cirino G, So A, Busso N. The protective role of the 3-mercaptopyruvate sulfurtransferase (3-MST)-hydrogen sulfide (H 2S) pathway against experimental osteoarthritis. Arthritis Res Ther 2020; 22:49. [PMID: 32183900 PMCID: PMC7077027 DOI: 10.1186/s13075-020-02147-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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] [Received: 10/18/2019] [Accepted: 03/06/2020] [Indexed: 12/13/2022] Open
Abstract
Background Osteoarthritis (OA) is characterized by the formation and deposition of calcium-containing crystals in joint tissues, but the underlying mechanisms are poorly understood. The gasotransmitter hydrogen sulfide (H2S) has been implicated in mineralization but has never been studied in OA. Here, we investigated the role of the H2S-producing enzyme 3-mercaptopyruvate sulfurtransferase (3-MST) in cartilage calcification and OA development. Methods 3-MST expression was analyzed in cartilage from patients with different OA degrees, and in cartilage stimulated with hydroxyapatite (HA) crystals. The modulation of 3-MST expression in vivo was studied in the meniscectomy (MNX) model of murine OA, by comparing sham-operated to MNX knee cartilage. The role of 3-MST was investigated by quantifying joint calcification and cartilage degradation in WT and 3-MST−/− meniscectomized knees. Chondrocyte mineralization in vitro was measured in WT and 3-MST−/− cells. Finally, the effect of oxidative stress on 3-MST expression and chondrocyte mineralization was investigated. Results 3-MST expression in human cartilage negatively correlated with calcification and OA severity, and diminished upon HA stimulation. In accordance, cartilage from menisectomized OA knees revealed decreased 3-MST if compared to sham-operated healthy knees. Moreover, 3-MST−/− mice showed exacerbated joint calcification and OA severity if compared to WT mice. In vitro, genetic or pharmacologic inhibition of 3-MST in chondrocytes resulted in enhanced mineralization and IL-6 secretion. Finally, oxidative stress decreased 3-MST expression and increased chondrocyte mineralization, maybe via induction of pro-mineralizing genes. Conclusion 3-MST-generated H2S protects against joint calcification and experimental OA. Enhancing H2S production in chondrocytes may represent a potential disease modifier to treat OA.
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Affiliation(s)
- Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Driss Ehirchiou
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Athanasia Chatzianastasiou
- First Department of Critical Care and Pulmonary Services, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Laboratory of Pharmacology, Faculty of Pharmacy, University of Athens, Athens, Greece
| | | | - Andreas Papapetropoulos
- Laboratory of Pharmacology, Faculty of Pharmacy, University of Athens, Athens, Greece.,Center of Clinical, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Jessica Bertrand
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - Giuseppe Cirino
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
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14
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Castelblanco M, Nasi S, Pasch A, So A, Busso N. The role of the gasotransmitter hydrogen sulfide in pathological calcification. Br J Pharmacol 2019; 177:778-792. [PMID: 31231793 DOI: 10.1111/bph.14772] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/29/2019] [Accepted: 06/05/2019] [Indexed: 12/11/2022] Open
Abstract
Calcification is the deposition of minerals, mainly hydroxyapatite, inside the cell or in the extracellular matrix. Physiological calcification is central for many aspects of development including skeletal and tooth growth; conversely, pathological mineralization occurs in soft tissues and is significantly associated with malfunction and impairment of the tissue where it is located. Various mechanisms have been proposed to explain calcification. However, this research area lacks a more integrative, systemic, and global perspective that could explain both physiological and pathological processes. In this review, we propose such an integrated explanation. Hydrogen sulfide (H2 S) is a newly recognized multifunctional gasotransmitters and tis actions have been studied in different physiological and pathological contexts, but little is known about its potential role on calcification. Interestingly, we found that H2 S promotes calcification under physiological conditions and has an inhibitory effect on pathological processes. This makes H2 S a potential therapy for diseases related to pathological calcification. LINKED ARTICLES: This article is part of a themed section on Hydrogen Sulfide in Biology & Medicine. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.4/issuetoc.
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Affiliation(s)
- Mariela Castelblanco
- Service of Rheumatology, DAL, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Sonia Nasi
- Service of Rheumatology, DAL, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | | | - Alexander So
- Service of Rheumatology, DAL, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, DAL, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
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15
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Castelblanco M, Lugrin J, Ehirchiou D, Nasi S, Ishii I, So A, Martinon F, Busso N. Hydrogen sulfide inhibits NLRP3 inflammasome activation and reduces cytokine production both in vitro and in a mouse model of inflammation. J Biol Chem 2017; 293:2546-2557. [PMID: 29279328 DOI: 10.1074/jbc.m117.806869] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [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: 07/21/2017] [Revised: 11/17/2017] [Indexed: 12/13/2022] Open
Abstract
A variety of stimuli, including monosodium urate (MSU) crystals, activate the NLRP3 inflammasome, and this activation involves several molecular mechanisms including xanthine oxidase (XO) up-regulation and mitochondrial dysfunction. Upon oligomerization of apoptosis-associated speck-like protein containing a CARD (ASC), caspase-1 becomes active and cleaves the proinflammatory cytokine IL-1β into its active secreted form. Hydrogen sulfide (H2S), a gasotransmitter mainly produced by cystathionine γ-lyase (CSE) in macrophages, could modulate inflammation. Here, we sought to investigate the effects of exogenous and endogenous H2S on NLRP3 inflammasome activation in vitro and in vivo Primed bone marrow-derived macrophages (BMDM) isolated from wildtype (wt) or CSE-deficient mice and human macrophages (THP1 cells and primary macrophages), were stimulated with MSU crystals in the presence or absence of a H2S donor, sodium thiosulfate (STS) or GYY4137 (GYY). In murine and human macrophages in vitro, both STS and GYY inhibited MSU crystal-induced IL-1β secretion in a dose-dependent manner. Moreover, the H2S donors inhibited MSU crystal-induced XO/caspase-1 activities, mitochondrial reactive oxygen species (ROS) generation, and ASC oligomerization. Accordingly, IL-1β secretion and XO/caspase-1 activities were higher in CSE-deficient BMDMs than in wt BMDMs. For in vivo studies, we experimentally induced peritonitis by intraperitoneal injection of MSU crystals into mice. GYY pretreatment ameliorated inflammation, evidenced by decreased IL-6/monocyte chemoattractant protein-1 (MCP-1) released into peritoneal lavages. Taken together, our results suggest that both exogenous (via H2S donors) and endogenous (via CSE) H2S production may represent approaches for managing, for example, acute gout or other inflammation conditions.
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Affiliation(s)
| | - Jérôme Lugrin
- the Department of Biochemistry, University of Lausanne, Epalinges 155 1066, Switzerland and
| | - Driss Ehirchiou
- the Department of Biochemistry, University of Lausanne, Epalinges 155 1066, Switzerland and
| | - Sonia Nasi
- From the Service of Rheumatology, DAL, Lausanne University Hospital (CHUV) and
| | - Isao Ishii
- Showa Pharmaceutical University, Tokyo 194-8543, Japan
| | - Alexander So
- From the Service of Rheumatology, DAL, Lausanne University Hospital (CHUV) and
| | - Fabio Martinon
- the Department of Biochemistry, University of Lausanne, Epalinges 155 1066, Switzerland and
| | - Nathalie Busso
- From the Service of Rheumatology, DAL, Lausanne University Hospital (CHUV) and
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16
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Leis L, Busso C, Cassara M, Tso L, Romano RS, Busso N. expectations towards in vitro fertilization (IVF): results in brazil. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.892] [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: 11/26/2022]
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17
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Cassara M, Busso C, Tso L, Romano RS, Rubin C, Busso N. Seroprevalence of ZIKA virus in an IVF clinic in São Paulo - Brazil. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.964] [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: 11/26/2022]
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18
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Nasi S, Ea HK, So A, Busso N. Revisiting the Role of Interleukin-1 Pathway in Osteoarthritis: Interleukin-1α and -1β, and NLRP3 Inflammasome Are Not Involved in the Pathological Features of the Murine Menisectomy Model of Osteoarthritis. Front Pharmacol 2017; 8:282. [PMID: 28659793 PMCID: PMC5468399 DOI: 10.3389/fphar.2017.00282] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [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] [Received: 01/13/2017] [Accepted: 05/04/2017] [Indexed: 01/10/2023] Open
Abstract
Background: Innate immune response components such as toll-like receptors (TLRs) and NLRP3-inflammasome act in concert to increase IL-1α/β secretion by synovial macrophages. Previous results suggest that IL-1α/β could be an important mediator involved in the pathogenesis of osteoarthritis (OA). Objectives: The aim of our study was to evaluate the role of NLRP3, IL-1β, and IL-1α in the menisectomy (MNX) model of murine OA. Methods: Murine chondrocytes (CHs) and bone marrow-derived machrophages (BMDM) were stimulated with hydroxyapatite (HA) crystals, a form of calcium-containing crystal found in human OA, and IL-1β and IL-6 secretion assayed by ELISA.Conversely, the ability of IL-1β and IL-6 to induce CHs calcification was assessed in vitro by Alizarin red staining. Knees from 8 to 10 weeks old C57Bl/6J wild-type (WT) (n = 7), NLRP3-/- (n = 9), IL-1α-/- (n = 5), and IL-1β-/- (n = 5) mice were menisectomized, using the sham-operated contralateral knee as control. 8 weeks later, knee cartilage degradation and synovial inflammation were evaluated by histology. In addition, apoptotic chondrocytes, metalloproteases activity, and collagen-type 2 expression were evaluated in all mice. Joint calcification and subchondral bone parameters were quantified by CT-scan in WT and IL-1β-/- menisectomized knees. Results:In vitro, HA crystals induced significant increased IL-6 secretion by CHs, while IL-1β remained undetectable.Conversely, both IL-6 and IL-1β were able to increase chondrocytes mineralization. In vivo, operated knees exhibited OA features compared to sham-operated knees as evidenced by increased cartilage degradation and synovial inflammation. In menisectomized KO mice, severity and extent of cartilage lesions were similar (IL-1α-/- mice) or exacerbated (IL-1β-/- and NLRP3-/- mice) compared to that of menisectomized WT mice. Metalloproteases activity, collagen-type 2 expression, chondrocytes apoptosis, and synovial inflammation were similar between KO and WT mice menisectomized knees. Moreover, the extent of joint calcification in osteoarthritic knees was comparable between IL-1β-/- and WT mice. Conclusions: MNX knees recapitulated features of OA, i.e, cartilage destruction, synovial inflammation, cell death, and joint calcification. Deficiency of IL-1α did not impact on the severity of these features, whereas deficiency of IL-1β or of NLRP3 led to increased cartilage erosion. Our results suggest that IL-1α and IL-1β are not key mediators in this murine OA model and may explain the inefficiency of IL-1 targeted therapies in OA.
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Affiliation(s)
- Sonia Nasi
- Département de l'appareil Locomoteur, Service of Rheumatology, Centre Hospitalier Universitaire Vaudois and University of LausanneLausanne, Switzerland
| | - Hang-Korng Ea
- Institut National de la Santé et de la Recherche Médicale, UMR-1132, Hospital LariboisièreParis, France.,Departement de Rhumatologie, Université Paris Diderot (UFR de Médecine)Paris, France
| | - Alexander So
- Département de l'appareil Locomoteur, Service of Rheumatology, Centre Hospitalier Universitaire Vaudois and University of LausanneLausanne, Switzerland
| | - Nathalie Busso
- Département de l'appareil Locomoteur, Service of Rheumatology, Centre Hospitalier Universitaire Vaudois and University of LausanneLausanne, Switzerland
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19
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Stevanin M, Busso N, Chobaz V, Pigni M, Ghassem-Zadeh S, Zhang L, Acha-Orbea H, Ehirchiou D. CD11b regulates the Treg/Th17 balance in murine arthritis via IL-6. Eur J Immunol 2017; 47:637-645. [PMID: 28191643 DOI: 10.1002/eji.201646565] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 06/16/2016] [Revised: 01/07/2017] [Accepted: 02/09/2017] [Indexed: 12/28/2022]
Abstract
Th17 cells are often associated with autoimmunity and been shown to be increased in CD11b-/- mice. Here, we examined the role of CD11b in murine collagen-induced arthritis (CIA). C57BL/6 and CD11b-/- resistant mice were immunized with type II collagen. CD11b-/- mice developed arthritis with early onset, high incidence, and sustained severity compared with C57BL/6 mice. We observed a marked leukocyte infiltration, and histological examinations of the arthritic paws from CD11b-/- mice revealed that the cartilage was destroyed in association with strong lymphocytic infiltration. The CD11b deficiency led to enhanced Th17-cell differentiation. CD11b-/- dendritic cells (DCs) induced much stronger IL-6 production and hence Th17-cell differentiation than wild-type DCs. Treatment of CD11b-/- mice after establishment of the Treg/Th17 balance with an anti-IL-6 receptor mAb significantly suppressed the induction of Th17 cells and reduced arthritis severity. Finally, the severe phenotype of arthritis in CD11b-/- mice was rescued by adoptive transfer of CD11b+ DCs. Taken together, our results indicate that the resistance to CIA in C57BL/6 mice is regulated by CD11b via suppression of IL-6 production leading to reduced Th17-cell differentiation. Therefore, CD11b may represent a susceptibility factor for autoimmunity and could be a target for future therapy.
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Affiliation(s)
- Mathias Stevanin
- Department of Biochemistry CIIL, University of Lausanne, Epalinges, Switzerland
| | - Nathalie Busso
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Epalinges, Switzerland
| | - Véronique Chobaz
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Epalinges, Switzerland
| | - Matteo Pigni
- Department of Biochemistry CIIL, University of Lausanne, Epalinges, Switzerland
| | - Sahar Ghassem-Zadeh
- Department of Biochemistry CIIL, University of Lausanne, Epalinges, Switzerland
| | - Li Zhang
- Center for Vascular and Inflammatory Diseases, Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Hans Acha-Orbea
- Department of Biochemistry CIIL, University of Lausanne, Epalinges, Switzerland
| | - Driss Ehirchiou
- Department of Biochemistry CIIL, University of Lausanne, Epalinges, Switzerland
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20
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Cheung MS, Theodoropoulou K, Lugrin J, Martinon F, Busso N, Hofer M. Periodic Fever with Aphthous Stomatitis, Pharyngitis, and Cervical Adenitis Syndrome Is Associated with a CARD8 Variant Unable To Bind the NLRP3 Inflammasome. J Immunol 2017; 198:2063-2069. [PMID: 28137891 DOI: 10.4049/jimmunol.1600760] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 01/03/2017] [Indexed: 12/30/2022]
Abstract
Periodic fever with aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) is a relatively common autoinflammatory condition that primarily affects children. Although tendencies were reported for this syndrome, genetic variations influencing risk and disease progression are poorly understood. In this study, we performed next-generation sequencing for 82 unrelated PFAPA patients and identified a frameshift variant in the CARD8 gene (CARD8-FS). Subsequently, we compared the frequency of CARD8-FS carriers in our PFAPA cohort (13.9%) with a healthy local population group (3.2%) and found a significant association between the CARD8-FS polymorphism and risk for PFAPA syndrome (p = 0.012; odds ratio: 4.96 [95% confidence interval, 1.33-18.47]). Moreover, CARD8-FS carriers display a distinct PFAPA phenotype that is characterized by a higher prevalence of symptoms out of flares and oral aphthosis (both p = 0.02 compared with PFAPA patients without the frameshift variant). CARD8 encodes a protein component of the NLRP3 inflammasome, which plays an important role in inflammation and contributes to the pathology of various autoinflammatory diseases. We found that the CARD8-FS variant led to a truncated CARD8 protein lacking the FIIND and CARD domains. As a result, the mutant CARD8 protein lost the ability to interact with the NOD domain of NLRP3. In summary, these results identify a new CARD8 variant associated with PFAPA and further suggest that disruption of the interaction between CARD8 and NLRP3 can regulate autoinflammation in patients.
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Affiliation(s)
- Ming Sin Cheung
- Novartis Institutes for Biomedical Research, 4002 Basel, Switzerland
| | - Katerina Theodoropoulou
- Pediatric Rheumatology Unit of Western Switzerland, Pediatric Department, University Hospital Center Vaudois, University of Lausanne, 1011 Lausanne, Switzerland.,Pediatric Department, Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Jérôme Lugrin
- Department of Biochemistry, University of Lausanne, 1011 Lausanne, Switzerland; and
| | - Fabio Martinon
- Department of Biochemistry, University of Lausanne, 1011 Lausanne, Switzerland; and
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Health, Lausanne University Hospital, University Hospital Center Vaudois, University of Lausanne, 1011 Lausanne, Switzerland
| | - Michaël Hofer
- Pediatric Rheumatology Unit of Western Switzerland, Pediatric Department, University Hospital Center Vaudois, University of Lausanne, 1011 Lausanne, Switzerland; .,Pediatric Department, Geneva University Hospitals, 1211 Geneva, Switzerland
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Nasi S, Ea HK, Lioté F, So A, Busso N. Sodium Thiosulfate Prevents Chondrocyte Mineralization and Reduces the Severity of Murine Osteoarthritis. PLoS One 2016; 11:e0158196. [PMID: 27391970 PMCID: PMC4938519 DOI: 10.1371/journal.pone.0158196] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 06/13/2016] [Indexed: 12/02/2022] Open
Abstract
Objectives Calcium-containing crystals participate in the pathogenesis of OA. Sodium thiosulfate (STS) has been shown to be an effective treatment in calcification disorders such as calciphylaxis and vascular calcification. This study investigated the effects and mechanisms of action of STS in a murine model of OA and in chondrocyte calcification. Methods Hydroxyapatite (HA) crystals-stimulated murine chondrocytes and macrophages were treated with STS. Mineralization and cellular production of IL-6, MCP-1 and reactive oxygen species (ROS) were assayed. STS's effects on genes involved in calcification, inflammation and cartilage matrix degradation were studied by RT-PCR. STS was administered in the menisectomy model of murine OA, and the effect on periarticular calcific deposits and cartilage degeneration was investigated by micro-CT-scan and histology. Results In vitro, STS prevented in a dose-dependent manner calcium crystal deposition in chondrocytes and inhibited Annexin V gene expression. In addition, there was a reduction in crystal-induced IL-6 and MCP-1 production. STS also had an antioxidant effect, diminished HA-induced ROS generation and abrogated HA-induced catabolic responses in chondrocytes. In vivo, administration of STS reduced the histological severity of OA, by limiting the size of new periarticular calcific deposits and reducing the severity of cartilage damage. Conclusions STS reduces the severity of periarticular calcification and cartilage damage in an animal model of OA via its effects on chondrocyte mineralization and its attenuation of crystal-induced inflammation as well as catabolic enzymes and ROS generation. Our study suggests that STS may be a disease-modifying drug in crystal-associated OA.
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Affiliation(s)
- Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
- * E-mail:
| | - Hang-Korng Ea
- Hospital Lariboisière, Service of Rheumatology, University School of Medicine, Paris VII, Paris, France
| | - Frédéric Lioté
- Hospital Lariboisière, Service of Rheumatology, University School of Medicine, Paris VII, Paris, France
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
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Nomura J, So A, Tamura M, Busso N. Intracellular ATP Decrease Mediates NLRP3 Inflammasome Activation upon Nigericin and Crystal Stimulation. J Immunol 2015; 195:5718-24. [PMID: 26546608 DOI: 10.4049/jimmunol.1402512] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 10/09/2015] [Indexed: 12/20/2022]
Abstract
Activation of the nucleotide-binding oligomerization domain-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome initiates an inflammatory response, which is associated with host defense against pathogens and the progression of chronic inflammatory diseases such as gout and atherosclerosis. The NLRP3 inflammasome mediates caspase-1 activation and subsequent IL-1β processing in response to various stimuli, including extracellular ATP, although the roles of intracellular ATP (iATP) in NLRP3 activation remain unclear. In this study, we found that in activated macrophages artificial reduction of iATP by 2-deoxyglucose, a glycolysis inhibitor, caused mitochondrial membrane depolarization, leading to IL-1β secretion via NLRP3 and caspase-1 activation. Additionally, the NLRP3 activators nigericin and monosodium urate crystals lowered iATP through K(+)- and Ca(2+)-mediated mitochondrial dysfunction, suggesting a feedback loop between iATP loss and lowering of mitochondrial membrane potential. These results demonstrate the fundamental roles of iATP in the maintenance of mitochondrial function and regulation of IL-1β secretion, and they suggest that maintenance of the intracellular ATP pools could be a strategy for countering NLRP3-mediated inflammation.
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Affiliation(s)
- Johji Nomura
- Pharmaceutical Development Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Ltd., Hino, Tokyo 191-8512, Japan; and Service de Rhumatologie, Département de l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, 1011 Lausanne, Switzerland
| | - Alexander So
- Service de Rhumatologie, Département de l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, 1011 Lausanne, Switzerland
| | - Mizuho Tamura
- Pharmaceutical Development Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Ltd., Hino, Tokyo 191-8512, Japan; and
| | - Nathalie Busso
- Service de Rhumatologie, Département de l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, 1011 Lausanne, Switzerland
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Nasi S, So A, Combes C, Daudon M, Busso N. Interleukin-6 and chondrocyte mineralisation act in tandem to promote experimental osteoarthritis. Ann Rheum Dis 2015; 75:1372-9. [PMID: 26253096 DOI: 10.1136/annrheumdis-2015-207487] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [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: 02/19/2015] [Accepted: 07/14/2015] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Basic calcium phosphate (BCP) crystal and interleukin 6 (IL-6) have been implicated in osteoarthritis (OA). We hypothesise that these two factors may be linked in a reciprocal amplification loop which leads to OA. METHODS Primary murine chondrocytes and human cartilage explants were incubated with hydroxyapatite (HA) crystals, a form of BCP, and the modulation of cytokines and matrix-degrading enzymes assayed. The ability of IL-6 to stimulate chondrocyte calcification was assessed in vitro. The mechanisms underlying the effects of HA on chondrocytes were investigated using chemical inhibitors, and the pathways mediating IL-6-induced calcification characterised by quantifying the expression of genes involved in chondrocyte mineralisation. The role of calcification in vivo was studied in the meniscectomy model of murine OA (MNX), and the link between IL-6 and cartilage degradation investigated by histology. RESULTS In chondrocytes, BCP crystals stimulated IL-6 secretion, further amplified in an autocrine loop, through signalling pathways involving Syk and PI3 kinases, Jak2 and Stat3 molecules. Exogenous IL-6 promoted calcium-containing crystal formation and upregulation of genes involved in calcification: the pyrophosphate channel Ank, the calcium channel Annexin5 and the sodium/phosphate cotransporter Pit-1. Treatment of chondrocytes with IL-6 inhibitors significantly inhibited IL-6-induced crystal formation. In meniscectomised mice, increasing deposits of BCP crystals were observed around the joint and correlated with cartilage degradation and IL-6 expression. Finally, BCP crystals induced proteoglycan loss and IL-6 expression in human cartilage explants, which were reduced by an IL-6 inhibitor. CONCLUSIONS BCP crystals and IL-6 form a positive feedback loop leading to OA. Targeting calcium-containing crystal formation and/or IL-6 are promising therapeutic strategies in OA.
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Affiliation(s)
- Sonia Nasi
- Service of Rheumatology, Department of Musculoskeletal Medicine, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Alexander So
- Service of Rheumatology, Department of Musculoskeletal Medicine, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Christèle Combes
- CIRIMAT, UMR 5085 INPT-UPS-CNRS, Université de Toulouse, ENSIACET, Toulouse, France
| | - Michel Daudon
- AP-HP, service d'Explorations Fonctionnelles, hôpital Tenon, Paris, France
| | - Nathalie Busso
- Service of Rheumatology, Department of Musculoskeletal Medicine, CHUV and University of Lausanne, Lausanne, Switzerland
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So A, Busso N. The concept of the inflammasome and its rheumatologic implications. Joint Bone Spine 2014; 81:398-402. [DOI: 10.1016/j.jbspin.2014.02.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 02/15/2014] [Indexed: 01/10/2023]
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Nomura J, Busso N, Matsui C, Tsujimoto S, Shirakura T, Tamura M, Kobayashi T, So A, Yamanaka Y. Abstract 269: Xanthine Oxidase Inhibition by Febuxostat Attenuates Experimental Atherosclerosis in Mice. Arterioscler Thromb Vasc Biol 2014. [DOI: 10.1161/atvb.34.suppl_1.269] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective:
Atherosclerosis is a chronic inflammatory disease of the vascular wall. Multiple mechanisms are implicated in the inflammatory process, including oxidative stress. Xanthine oxidase (XO), which is converted from xanthine dehydrogenase (XDH), is a major enzymatic source of reactive oxygen species (ROS) and has been reported to be involved in atherosclerosis, but the underlying mechanisms remain unclear. We have examined whether XO contributes to atherosclerosis in mice and whether XO mediates cholesterol crystal (CC)-induced inflammation.
Approach and Results:
ApoE
-/-
mice fed a high cholesterol diet for 12 weeks (ApoE
-/-
) developed atherosclerotic plaques, increased ROS generation, increased tissue activities of XO/XDH, and endothelial dysfunction. Immunohistochemical analysis revealed that XO/XDH were increased in macrophages in atherosclerotic plaques and in aortic endothelial cells. Febuxostat, a highly potent XO/XDH inhibitor, significantly attenuated plaque formation, decreased ROS generation, and improved endothelial dysfunction in ApoE
-/-
mice without affecting plasma cholesterol levels. Additionally, in aorta from febuxostat-treated group, MCP-1 mRNA was significantly decreased whereas eNOS mRNA was increased. Furthermore, we examined the effects of febuxostat on CC-induced inflammation in macrophages. Febuxostat significantly inhibited CC-induced ROS formation as well as MCP-1, IL-1α, IL-1β and IL-6 production and its effects could be recapitulated by ROS scavengers.
Conclusions:
These results demonstrated that increased XO leads to ROS formation and contributes to the progression of atherosclerosis via endothelial dysfunction and macrophage inflammation, and that febuxostat may be a potential therapeutic agent to target inflammation in atherosclerosis.
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Affiliation(s)
- Johji Nomura
- Teijin Institute for Bio-Med Rsch, Teijin Pharma Ltd, Tokyo, Japan
| | - Nathalie Busso
- Service of Rheumatology, Cntr Hospier Universitaire Vaudois, Univ of Lausanne, Lausanne, Switzerland
| | - Chieko Matsui
- Teijin Institute for Bio-Med Rsch, Teijin Pharma Ltd, Tokyo, Japan
| | | | | | - Mizuho Tamura
- Teijin Institute for Bio-Med Rsch, Teijin Pharma Ltd, Tokyo, Japan
| | | | - Alexander So
- Service of Rheumatology, Cntr Hospier Universitaire Vaudois, Univ of Lausanne, Lausanne, Switzerland
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Holzinger D, Nippe N, Vogl T, Marketon K, Mysore V, Weinhage T, Dalbeth N, Pool B, Merriman T, Baeten D, Ives A, Busso N, Foell D, Bas S, Gabay C, Roth J. Myeloid-Related Proteins 8 and 14 Contribute to Monosodium Urate Monohydrate Crystal-Induced Inflammation in Gout. Arthritis Rheumatol 2014; 66:1327-39. [DOI: 10.1002/art.38369] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 01/14/2014] [Indexed: 12/28/2022]
Affiliation(s)
- Dirk Holzinger
- University Hospital Muenster and University Children's Hospital Muenster; Muenster Germany
| | - Nadine Nippe
- University Hospital Muenster and University of Muenster; Muenster Germany
| | - Thomas Vogl
- University Hospital Muenster; Muenster Germany
| | | | | | - Toni Weinhage
- University Children's Hospital Muenster; Muenster Germany
| | | | | | | | - Dominique Baeten
- Academic Medical Center and University of Amsterdam; Amsterdam The Netherlands
| | | | | | - Dirk Foell
- University Children's Hospital Muenster; Muenster Germany
| | - Sylvette Bas
- University Hospitals of Geneva; Geneva Switzerland
| | - Cem Gabay
- University Hospitals of Geneva; Geneva Switzerland
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Nasi S, Ea HK, Chobaz V, van Lent P, Lioté F, So A, Busso N. Dispensable role of myeloid differentiation primary response gene 88 (MyD88) and MyD88-dependent toll-like receptors (TLRs) in a murine model of osteoarthritis. Joint Bone Spine 2014; 81:320-4. [PMID: 24703622 DOI: 10.1016/j.jbspin.2014.01.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 01/25/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVES The aim of our study was to evaluate the role of cell-membrane expressed TLRs and the signaling molecule MyD88 in a murine model of OA induced by knee menisectomy (surgical partial removal of the medial meniscus [MNX]). METHODS OA was induced in 8-10weeks old C57Bl/6 wild-type (WT) female (n=7) mice and in knockout (KO) TLR-1 (n=7), -2 (n=8), -4 (n=9) -6 (n=5), MyD88 (n=8) mice by medial menisectomy, using the sham-operated contralateral knee as a control. Cartilage destruction and synovial inflammation were evaluated by knee joint histology using the OARSI scoring method. Apoptotic chondrocytes and cartilage metabolism (collagen II synthesis and MMP-mediated aggrecan degradation) were analyzed using immunohistochemistry. RESULTS Operated knees exhibited OA features at 8weeks post-surgery compared to sham-operated ones. In menisectomized TLR-1, -2, -4, and -6 deficient mice, cartilage lesions, synovial inflammation and cartilage metabolism were similar to that in operated WT mice. Accordingly, using the same approach, we found no significant protection in MyD88-deficient mice in terms of OA progression as compared to WT littermates. CONCLUSIONS Deficiency of TLRs or their signalling molecule MyD88 did not impact on the severity of experimental OA. Our results demonstrate that MyD88-dependent TLRs are not involved in this murine OA model. Moreover, the dispensable role of MyD88, which is also an adaptor for IL-1 receptor signaling, suggests that IL-1 is not a key mediator in the development of OA. This latter hypothesis is strengthened by the lack of efficiency of IL-1β antagonist in the treatment of OA.
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Affiliation(s)
- Sonia Nasi
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Nestlé 05-5029, 1011 Lausanne, Switzerland
| | - Hang-Korng Ea
- INSERM, UMR-S 606, Hospital Lariboisière, 75010 Paris, France; University Paris Diderot (UFR de Médecine), Sorbonne Paris Cité, 75205 Paris, France
| | - Véronique Chobaz
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Nestlé 05-5029, 1011 Lausanne, Switzerland
| | | | - Frédéric Lioté
- INSERM, UMR-S 606, Hospital Lariboisière, 75010 Paris, France; University Paris Diderot (UFR de Médecine), Sorbonne Paris Cité, 75205 Paris, France
| | - Alexander So
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Nestlé 05-5029, 1011 Lausanne, Switzerland
| | - Nathalie Busso
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Nestlé 05-5029, 1011 Lausanne, Switzerland.
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Nomura J, Busso N, Ives A, Matsui C, Tsujimoto S, Shirakura T, Tamura M, Kobayashi T, So A, Yamanaka Y. Xanthine oxidase inhibition by febuxostat attenuates experimental atherosclerosis in mice. Sci Rep 2014; 4:4554. [PMID: 24686534 PMCID: PMC3971401 DOI: 10.1038/srep04554] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [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: 10/29/2013] [Accepted: 03/14/2014] [Indexed: 12/13/2022] Open
Abstract
Atherosclerosis is a chronic inflammatory disease due to lipid deposition in the arterial wall. Multiple mechanisms participate in the inflammatory process, including oxidative stress. Xanthine oxidase (XO) is a major source of reactive oxygen species (ROS) and has been linked to the pathogenesis of atherosclerosis, but the underlying mechanisms remain unclear. Here, we show enhanced XO expression in macrophages in the atherosclerotic plaque and in aortic endothelial cells in ApoE(-/-) mice, and that febuxostat, a highly potent XO inhibitor, suppressed plaque formation, reduced arterial ROS levels and improved endothelial dysfunction in ApoE(-/-) mice without affecting plasma cholesterol levels. In vitro, febuxostat inhibited cholesterol crystal-induced ROS formation and inflammatory cytokine release in murine macrophages. These results demonstrate that in the atherosclerotic plaque, XO-mediated ROS formation is pro-inflammatory and XO-inhibition by febuxostat is a potential therapy for atherosclerosis.
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Affiliation(s)
- Johji Nomura
- 1] Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan [2] Service of Rheumatology, Department of l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Nathalie Busso
- Service of Rheumatology, Department of l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Annette Ives
- Service of Rheumatology, Department of l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Chieko Matsui
- Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan
| | - Syunsuke Tsujimoto
- Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan
| | - Takashi Shirakura
- Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan
| | - Mizuho Tamura
- Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan
| | - Tsunefumi Kobayashi
- Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan
| | - Alexander So
- Service of Rheumatology, Department of l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Yoshihiro Yamanaka
- Pharmaceutical Department Research Laboratories, Teijin Institute for Bio-Medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan
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Holzinger D, Nippe N, Marketon K, Dalbeth N, Merriman T, Baeten D, Busso N, Vogl T, Foell D, Gabay C, Roth J. OP0099 Toll-like receptor 4 agonists MRP 8 and MRP 14 act as endogenous enhancers of MSU-crystal induced IL-1 secretion in vitro and reflect disease activity in gout patients in vivo. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2012-eular.1782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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Von Scheven-Gête A, Hofer M, Simon G, Busso N, Morris M, Vanoni F. PReS-FINAL-2325: Different phenotypes associated with Q703K variant of the NLRP3 gene. Pediatr Rheumatol Online J 2013. [PMCID: PMC4044934 DOI: 10.1186/1546-0096-11-s2-p315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Simon G, Busso N, von Scheven-Gete A, So A, Hofer M. PW03-004 - PFAPA patient’s serum sensitizes monocytes to LPS. Pediatr Rheumatol Online J 2013. [PMCID: PMC3952961 DOI: 10.1186/1546-0096-11-s1-a230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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von Scheven-Gête A, Moix I, Simon G, Busso N, Morris M, Hofer M. P03-002 - Different phenotypes associated with Q703K variant. Pediatr Rheumatol Online J 2013. [PMCID: PMC3953221 DOI: 10.1186/1546-0096-11-s1-a197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Holzinger D, Nippe N, Vogl T, Marketon K, Mysore V, Weinhage T, Dalbeth N, Pool B, Merriman T, Baeten D, Ives A, Bagnoud N, Busso N, Foell D, Bas S, Gabay C, Roth J. OR6-004 – MRP8/14 promote MSU-crystal induced inflammation. Pediatr Rheumatol Online J 2013. [PMCID: PMC3952172 DOI: 10.1186/1546-0096-11-s1-a99] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Simon G, Busso N, von Scheven-Gete A, Moix I, Morris M, So A, Hofer M. PW03-005 - NLRP3-Q705K monocytes do not produce more IL-1B. Pediatr Rheumatol Online J 2013. [PMCID: PMC3953179 DOI: 10.1186/1546-0096-11-s1-a231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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Nasi S, Ea HK, Lioté F, So A, Busso N. FRI0023 Toll-like receptors 1,2,4,6, MYD88, NALP3 and IL1A have no effect in a murine model of osteoarthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2480] [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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Ea HK, Chobaz V, Nguyen C, Nasi S, van Lent P, Daudon M, Dessombz A, Bazin D, McCarthy G, Jolles-Haeberli B, Ives A, Van Linthoudt D, So A, Lioté F, Busso N. Pathogenic role of basic calcium phosphate crystals in destructive arthropathies. PLoS One 2013; 8:e57352. [PMID: 23468973 PMCID: PMC3585350 DOI: 10.1371/journal.pone.0057352] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 01/21/2013] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND basic calcium phosphate (BCP) crystals are commonly found in osteoarthritis (OA) and are associated with cartilage destruction. BCP crystals induce in vitro catabolic responses with the production of metalloproteases and inflammatory cytokines such as interleukin-1 (IL-1). In vivo, IL-1 production induced by BCP crystals is both dependant and independent of NLRP3 inflammasome. We aimed to clarify 1/ the role of BCP crystals in cartilage destruction and 2/ the role of IL-1 and NLRP3 inflammasome in cartilage degradation related to BCP crystals. METHODOLOGY PRINCIPAL FINDINGS synovial membranes isolated from OA knees were analysed by alizarin Red and FTIR. Pyrogen free BCP crystals were injected into right knees of WT, NLRP3 -/-, ASC -/-, IL-1α -/- and IL-1β-/- mice and PBS was injected into left knees. To assess the role of IL-1, WT mice were treated by intra-peritoneal injections of anakinra, the IL-1Ra recombinant protein, or PBS. Articular destruction was studied at d4, d17 and d30 assessing synovial inflammation, proteoglycan loss and chondrocyte apoptosis. BCP crystals were frequently found in OA synovial membranes including low grade OA. BCP crystals injected into murine knee joints provoked synovial inflammation characterized by synovial macrophage infiltration that persisted at day 30, cartilage degradation as evidenced by loss of proteoglycan staining by Safranin-O and concomitant expression of VDIPEN epitopes, and increased chondrocyte apoptosis. BCP crystal-induced synovitis was totally independent of IL-1α and IL-1β signalling and no alterations of inflammation were observed in mice deficient for components of the NLRP3-inflammasome, IL-1α or IL-1β. Similarly, treatment with anakinra did not prevent BCP crystal effects. In vitro, BCP crystals elicited enhanced transcription of matrix degrading and pro-inflammatory genes in macrophages. CONCLUSIONS SIGNIFICANCE intra-articular BCP crystals can elicit synovial inflammation and cartilage degradation suggesting that BCP crystals have a direct pathogenic role in OA. The effects are independent of IL-1 and NLRP3 inflammasome.
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Affiliation(s)
- Hang-Korng Ea
- INSERM, UMR-S 606, Hospital Lariboisière,Paris, France
- University Paris Diderot (UFR de Médecine), Sorbonne Paris Cité, Paris, France
| | - Véronique Chobaz
- Department of Musculoskeletal Medicine, Service of Rheumatology, CHUV and University of Lausanne, Lausanne, Switzerland
| | | | - Sonia Nasi
- Department of Musculoskeletal Medicine, Service of Rheumatology, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Peter van Lent
- Department of Rheumatology, Rheumatology Research and Advanced Therapeutics, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Michel Daudon
- Service des Explorations Fonctionnelles, Hôpital Tenon, AP-HP, Paris, France
| | - Arnaud Dessombz
- Laboratoire de Physique des Solides, Université Paris Sud, Orsay, France
| | - Dominique Bazin
- Laboratoire de Physique des Solides, Université Paris Sud, Orsay, France
| | | | - Brigitte Jolles-Haeberli
- Service de chirurgie orthopédique et traumatologique de l'appareil moteur, Department of Musculoskeletal Medicine, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Annette Ives
- Department of Musculoskeletal Medicine, Service of Rheumatology, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Daniel Van Linthoudt
- Department of Musculoskeletal Medicine, Service of Rheumatology, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Alexander So
- Department of Musculoskeletal Medicine, Service of Rheumatology, CHUV and University of Lausanne, Lausanne, Switzerland
| | - Frédéric Lioté
- INSERM, UMR-S 606, Hospital Lariboisière,Paris, France
- University Paris Diderot (UFR de Médecine), Sorbonne Paris Cité, Paris, France
| | - Nathalie Busso
- Department of Musculoskeletal Medicine, Service of Rheumatology, CHUV and University of Lausanne, Lausanne, Switzerland
- * E-mail:
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Abstract
Significant scientific advances have been made over the last five years in the pathogenesis of hyperuricemia and understanding how monosodium urate (MSU) crystals provoke gout. New detection methods using ultrasound (US) have been evaluated and may become part of our routine diagnostic approach in a patient presenting with gout. This review will concentrate on the latest developments in the field, and discuss how these data may impact on clinical practice. Finally, a brief review of the therapeutic implications and new therapies that have become available will be presented.
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Affiliation(s)
- Alexander So
- Service de Rhumatologie, Département de l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.
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Kolly L, Busso N, von Scheven-Gete A, Bagnoud N, Moix I, Holzinger D, Simon G, Ives A, Guarda G, So A, Morris MA, Hofer M. Periodic fever, aphthous stomatitis, pharyngitis, cervical adenitis syndrome is linked to dysregulated monocyte IL-1β production. J Allergy Clin Immunol 2012; 131:1635-43. [PMID: 23006543 DOI: 10.1016/j.jaci.2012.07.043] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 05/31/2012] [Accepted: 07/02/2012] [Indexed: 02/01/2023]
Abstract
BACKGROUND The exact pathogenesis of the pediatric disorder periodic fever, aphthous stomatitis, pharyngitis, cervical adenitis (PFAPA) syndrome is unknown. OBJECTIVES We hypothesized that PFAPA might be due to dysregulated monocyte IL-1β production linked to genetic variants in proinflammatory genes. METHODS Fifteen patients with PFAPA syndrome were studied during and outside a febrile episode. Hematologic profile, inflammatory markers, and cytokine levels were measured in the blood. The capacity of LPS-stimulated PBMCs and monocytes to secrete IL-1β was assessed by using ELISA, and active IL-1β secretion was visualized by means of Western blotting. Real-time quantitative PCR was performed to assess cytokine gene expression. DNA was screened for variants of the MEFV, TNFRSF1A, MVK, and NLRP3 genes in a total of 57 patients with PFAPA syndrome. RESULTS During a febrile attack, patients with PFAPA syndrome revealed significantly increased neutrophil counts, erythrocyte sedimentation rates, and C-reactive protein, serum amyloid A, myeloid-related protein 8/14, and S100A12 levels compared with those seen outside attacks. Stimulated PBMCs secreted significantly more IL-1β during an attack (during a febrile episode, 575 ± 88 pg/mL; outside a febrile episode, 235 ± 56 pg/mL; P < .001), and this was in the mature active p17 form. IL-1β secretion was inhibited by ZYVAD, a caspase inhibitor. Similar results were found for stimulated monocytes (during a febrile episode, 743 ± 183 pg/mL; outside a febrile episode, 227 ± 92 pg/mL; P < .05). Genotyping identified variants in 15 of 57 patients, with 12 NLRP3 variants, 1 TNFRSF1A variant, 4 MEFV variants, and 1 MVK variant. CONCLUSION Our data strongly suggest that IL-1β monocyte production is dysregulated in patients with PFAPA syndrome. Approximately 20% of them were found to have NLRP3 variants, suggesting that inflammasome-related genes might be involved in this autoinflammatory syndrome.
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Affiliation(s)
- Laeticia Kolly
- Rheumatology Service, DAL, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
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Kolly L, von Scheven-Gete A, Bagnoud N, Holzinger D, So A, Busso N, Hofer M. Sécrétion augmentée d’IL-1β par les lymphomonocytes de patients avec PFAPA au cours des poussées fébriles. Arch Pediatr 2012. [DOI: 10.1016/j.arcped.2012.03.026] [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: 10/26/2022]
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Busso N, Ea HK. The mechanisms of inflammation in gout and pseudogout (CPP-induced arthritis). Reumatismo 2012; 63:230-7. [PMID: 22303529 DOI: 10.4081/reumatismo.2011.230] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 01/19/2012] [Indexed: 11/22/2022] Open
Abstract
Recent advances have stimulated new interest in the area of crystal arthritis, as microcrystals can be considered to be endogenous "danger signals" and are potent stimulators of immune as well as non-immune cells. The best known microcrystals include urate (MSU), and calcium pyrophosphate (CPP) crystals, associated with gout and pseudogout, respectively. Acute inflammation is the hallmark of the acute tissue reaction to crystals in both gout and pseudogout. The mechanisms leading to joint inflammation in these diseases involve first crystal formation and subsequent coating with serum proteins. Crystals can then interact with plasma cell membrane, either directly or via membrane receptors, leading to NLRP3 activation, proteolytic cleavage and maturation of pro-interleukin-1β (pro-IL1β) and secretion of mature IL1β. Once released, this cytokine orchestrates a series of events leading to endothelial cell activation and neutrophil recruitment. Ultimately, gout resolution involves several mechanisms including monocyte differentiation into macrophage, clearance of apoptotic neutrophils by macrophages, production of Transforming Growth Factor (TGF-β) and modification of protein coating on the crystal surface. This review will examine these different steps.
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Affiliation(s)
- N Busso
- DAL, Service de Rhumatologie, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Switzerland.
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Kolly L, von Scheven-Gete A, Busso N, Bagnoud N, Holzinger D, Morris M, Hofer M. PFAPA syndrome is linked to dysregulated IL-1β production. Pediatr Rheumatol Online J 2011. [PMCID: PMC3194665 DOI: 10.1186/1546-0096-9-s1-p297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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Velin D, Narayan S, Bernasconi E, Busso N, Ramelli G, Maillard MH, Bachmann D, Pythoud C, Bouzourene H, Michetti P, So A. PAR2 promotes vaccine-induced protection against Helicobacter infection in mice. Gastroenterology 2011; 141:1273-82, 1282.e1. [PMID: 21703999 DOI: 10.1053/j.gastro.2011.06.038] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 05/13/2011] [Accepted: 06/07/2011] [Indexed: 12/29/2022]
Abstract
BACKGROUND & AIMS Protective immunization limits Helicobacter infection of mice by undetermined mechanisms. Protease-activated receptor 2 (PAR2) signaling is believed to regulate immune and inflammatory responses. We investigated the role of PAR2 in vaccine-induced immunity against Helicobacter infection. METHODS Immune responses against Helicobacter infection were compared between vaccinated PAR2-/- and wild-type (WT) mice. Bacterial persistence, gastric pathology, and inflammatory and cellular responses were assessed using the rapid urease test (RUT), histologic analyses, quantitative polymerase chain reaction, and flow cytometry, respectively. RESULTS Following vaccination, PAR2-/- mice did not have reductions in Helicobacter felis infection (RUT values were 0.01±0.01 for WT mice and 0.11±0.13 for PAR2-/- mice; P<.05). The vaccinated PAR2-/- mice had reduced inflammation-induced stomach tissue damage (tissue damage scores were 8.83±1.47 for WT mice and 4.86±1.35 for PAR2-/- mice; P<.002) and reduced T-helper (Th)17 responses, based on reduced urease-induced interleukin (IL)-17 secretion by stomach mononuclear cells (5182 ± 1265 pg/mL for WT mice and 350±436 pg/mL for PAR2-/- mice; P<.03) and reduced recruitment of CD4+ IL-17+ T cells into the gastric mucosa of PAR2-/- mice following bacterial challenge (3.7%±1.5% for WT mice and 2.6%±1.1% for PAR2-/- mice; P<.05). In vitro, H felis-stimulated dendritic cells (DCs) from WT mice induced greater secretion of IL-17 by ovalbumin-stimulated OT-II transgenic CD4+ T cells compared with DCs from PAR2-/- mice (4298±347 and 3230±779; P<.04), indicating that PAR2-/- DCs are impaired in priming of Th17 cells. Adoptive transfer of PAR2+/+ DCs into vaccinated PAR2-/- mice increased vaccine-induced protection (RUT values were 0.11±0.10 and 0.26±0.15 for injected and noninjected mice, respectively; P<.03). CONCLUSIONS PAR2 activates DCs to mediate vaccine-induced protection against Helicobacter infection in mice.
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Affiliation(s)
- Dominique Velin
- Service of Gastroenterology and Hepatology, Department of Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
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Narayan S, Kolly L, So A, Busso N. Increased interleukin-10 production by ASC-deficient CD4+ T cells impairs bystander T-cell proliferation. Immunology 2011; 134:33-40. [PMID: 21718313 DOI: 10.1111/j.1365-2567.2011.03462.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) is an important component of the inflammasome, functioning as an adaptor protein that facilitates the recruitment and activation of procaspases that in turn promote the maturation of interleukin-1β (IL-1β) and IL-18. Despite initial focus on the inflammatory properties of ASC there is emerging evidence that highlights the importance of ASC in facilitating adaptive immune responses. However, the cellular and molecular basis for the involvement of ASC in adaptive immunity remains largely unexplored. We have previously demonstrated that activated ASC-deficient T cells have dampened proliferative responses. We have therefore explored the underlying cellular mechanism(s) by which ASC regulates T-cell proliferation. We show that under activating conditions (anti-CD3/CD28 stimulation) in bulk T-cell cultures the presence of ASC(-/-) CD4(+) T cells is sufficient to suppress the proliferative responses of neighbouring T cells. Furthermore, ASC(-/-) CD4(+) T cells upon activation exhibit a suppressive cytokine profile, with elevated production of IL-10 and reduced secretion of T helper type 1 cytokines, interferon-γ and IL-2. This increase in IL-10 secretion within the activated ASC(-/-) CD4(+) T-cell compartment was not associated with a proportional increase in conventional Foxp3(+) regulatory T (Treg) cells. Interestingly, when equal numbers of fluorescence-activated cell sorted ASC(+/+) and ASC(-/-) Treg cells (CD4(+) CD44(intermediate/high) CD25(+)) were activated in vitro, the ASC(-/-) fraction produced significantly more IL-10 than their wild-type counterparts, suggesting that ASC(-/-) Treg cells have greater suppressive capacity. Collectively, these results imply that the ASC may influence the development and functioning of Treg cells.
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Affiliation(s)
- Sharmal Narayan
- Service of Rheumatology, Department of l'Appareil Locomoteur, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.
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Narayan S, Pazar B, Pazar B, Ea HK, Kolly L, Bagnoud N, Chobaz V, Lioté F, Vogl T, Holzinger D, Kai-Lik So A, Busso N. Octacalcium phosphate crystals induce inflammation in vivo through interleukin-1 but independent of the NLRP3 inflammasome in mice. ACTA ACUST UNITED AC 2011; 63:422-33. [PMID: 21279999 DOI: 10.1002/art.30147] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To determine the mechanisms involved in inflammatory responses to octacalcium phosphate (OCP) crystals in vivo. METHODS OCP crystal-induced inflammation was monitored using a peritoneal model of inflammation in mice with different deficiencies affecting interleukin-1 (IL-1) secretion (IL-1α(-/-) , IL-1β(-/-) , ASC(-/-) , and NLRP3(-/-) mice) or in mice pretreated with IL-1 inhibitors (anakinra [recombinant IL-1 receptor antagonist] and anti-IL-1β). The production of IL-1α, IL-1β, and myeloid-related protein 8 (MRP-8)-MRP-14 complex was determined by enzyme-linked immunosorbent assay. Peritoneal neutrophil recruitment and cell viability were determined by flow cytometry. Depletion of mast cells or resident macrophages was performed by pretreatment with compound 48/80 or clodronate liposomes, respectively. RESULTS OCP crystals induced peritoneal inflammation, as demonstrated by neutrophil recruitment and up-modulation of IL-1α, IL-1β, and MRP-8-MRP-14 complex, to levels comparable with those induced by monosodium urate monohydrate crystals. This OCP crystal-induced inflammation was both IL-1α- and IL-1β-dependent, as shown by the inhibitory effects of anakinra and anti-IL-1β antibody treatment. Accordingly, OCP crystal stimulation resulted in milder inflammation in IL-1α(-/-) and IL-1β(-/-) mice. Interestingly, ASC(-/-) and NLRP3(-/-) mice did not show any alteration in their inflammation status in response to OCP crystals. Depletion of the resident macrophage population resulted in a significant decrease in crystal-induced neutrophil infiltration and proinflammatory cytokine production in vivo, whereas mast cell depletion had no effect. Finally, OCP crystals induced apoptosis/necrosis of peritoneal cells in vivo. CONCLUSION These data indicate that macrophages, rather than mast cells, are important for initiating and driving OCP crystal-induced inflammation. Additionally, OCP crystals induce IL-1-dependent peritoneal inflammation without requiring the NLRP3 inflammasome.
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Affiliation(s)
- Sharmal Narayan
- Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
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Joosten LA, Ea HK, Netea MG, Busso N. Interleukin-1β activation during acute joint inflammation: A limited role for the NLRP3 inflammasome in vivo. Joint Bone Spine 2011; 78:107-10. [DOI: 10.1016/j.jbspin.2010.11.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 11/05/2010] [Indexed: 02/02/2023]
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Pazár B, Ea HK, Narayan S, Kolly L, Bagnoud N, Chobaz V, Roger T, Lioté F, So A, Busso N. Basic calcium phosphate crystals induce monocyte/macrophage IL-1β secretion through the NLRP3 inflammasome in vitro. J Immunol 2011; 186:2495-502. [PMID: 21239716 DOI: 10.4049/jimmunol.1001284] [Citation(s) in RCA: 189] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Basic calcium phosphate (BCP) crystals are associated with severe osteoarthritis and acute periarticular inflammation. Three main forms of BCP crystals have been identified from pathological tissues: octacalcium phosphate, carbonate-substituted apatite, and hydroxyapatite. We investigated the proinflammatory effects of these BCP crystals in vitro with special regard to the involvement of the NLRP3-inflammasome in THP-1 cells, primary human monocytes and macrophages, and mouse bone marrow-derived macrophages (BMDM). THP-1 cells stimulated with BCP crystals produced IL-1β in a dose-dependent manner. Similarly, primary human cells and BMDM from wild-type mice also produced high concentrations of IL-1β after crystal stimulation. THP-1 cells transfected with short hairpin RNA against the components of the NLRP3 inflammasome and mouse BMDM from mice deficient for NLRP3, apoptosis-associated speck-like protein, or caspase-1 did not produce IL-1β after BCP crystal stimulation. BCP crystals induced macrophage apoptosis/necrosis as demonstrated by MTT and flow cytometric analysis. Collectively, these results demonstrate that BCP crystals induce IL-1β secretion through activating the NLRP3 inflammasome. Furthermore, we speculate that IL-1 blockade could be a novel strategy to inhibit BCP-induced inflammation in human disease.
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Affiliation(s)
- Borbála Pazár
- Department of Rheumatology, Centre Hospitalier Universitaire Vaudois, 1011 Lausanne, Switzerland
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Schmitt F, Lagopoulos L, Käuper P, Rossi N, Busso N, Barge J, Wagnières G, Laue C, Wandrey C, Juillerat-Jeanneret L. Chitosan-based nanogels for selective delivery of photosensitizers to macrophages and improved retention in and therapy of articular joints. J Control Release 2010; 144:242-50. [DOI: 10.1016/j.jconrel.2010.02.008] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 02/05/2010] [Indexed: 02/07/2023]
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Abstract
An acute attack of gout is a paradigm of acute sterile inflammation, as opposed to pyogenic inflammation. Recent studies suggest that the triggering of IL-1β release from leucocytes lies at the heart of a cascade of processes that involves multiple cytokines and mediators. The NLRP3 inflammasome appears to have a specific role in this regard, but the biochemical events leading to its activation are still not well understood. We review the known mechanisms that underlie the inflammatory process triggered by urate crystals and suggest areas that require further research.
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Affiliation(s)
- Nathalie Busso
- Service de Rheumatologie, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Avenue Pierre Decker, 1011 Lausanne, Suisse
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