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Pioli KT, Ritchie M, Haq H, Pioli PD. Jchain- DTR Mice Allow for Diphtheria Toxin-Mediated Depletion of Antibody-Secreting Cells and Evaluation of Their Differentiation Kinetics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.06.592703. [PMID: 38766257 PMCID: PMC11100621 DOI: 10.1101/2024.05.06.592703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Antibody-secreting cells (ASCs) are generated following B cell activation and constitutively secrete antibodies. As such, ASCs are key mediators of humoral immunity whether it be in the context of pathogen exposure, vaccination or even homeostatic clearance of cellular debris. Therefore, understanding basic tenants of ASC biology such as their differentiation kinetics following B cell stimulation is of importance. Towards that aim, we developed a mouse model which expresses simian HBEGF (a.k.a., diphtheria toxin receptor (DTR)) under the control of the endogenous Jchain locus (or J-DTR). ASCs from these mice expressed high levels of cell surface DTR and were acutely depleted following diphtheria toxin treatment. Furthermore, proof-of-principle experiments demonstrated the ability to use these mice to track ASC reconstitution following depletion in 3 distinct organs. Overall, J-DTR mice provide a new and highly effective genetic tool allowing for the study of ASC biology in a wide range of potential applications.
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Affiliation(s)
- KimAnh T. Pioli
- Department of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N5E5 Canada
| | - Matthew Ritchie
- Department of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N5E5 Canada
| | - Hira Haq
- Department of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N5E5 Canada
| | - Peter D. Pioli
- Department of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N5E5 Canada
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Chavula T, To S, Smith J, Pedroza M, Nimri J, Devaraj S, Wenderfer S, Vogel TP, Agarwal SK. CADHERIN-11 regulation of myeloid phagocytes and autoimmune inflammation in murine lupus. J Autoimmun 2024; 145:103197. [PMID: 38447248 DOI: 10.1016/j.jaut.2024.103197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/15/2024] [Accepted: 02/23/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND AND OBJECTIVE Understanding the regulation of efferocytosis by myeloid phagocytes is important in identifying novel targets in systemic lupus erythematosus (SLE). Cadherin-11 (CDH11), a cell adhesion molecule, is implicated in inflammatory arthritis and fibrosis and recently been shown to regulate macrophage phagocytosis. The extent and mechanism of this regulation is unknown. Our objective was to examine the extent to which CDH11 regulates myeloid phagocytes and contributes to autoimmunity and tissue inflammation. METHODS We analyzed efferocytosis in macrophages and dendritic cells (DCs) from WT and Cdh11-/- mice and investigated the mechanisms in vitro. We investigated the role of CDH11 in disease development in vivo using the pristane induced lupus model. To translate the clinical relevance of CDH11 in human disease, we measured serum CDH11 levels in two independent pediatric SLE (pSLE) cohorts and healthy controls. RESULTS Using bone marrow derived macrophages (BMDMs) and DCs (BMDCs), we found impaired efferocytosis in phagocytes from Cdh11-/- mice, mediated by downregulated efferocytosis receptor expression and RhoGTPase activation. Specifically, loss of CDH11 downregulated Mertk expression and Rac1 activation in BMDMs, and integrin αVβ3 expression and Cdc42 activation in BMDCs, highlighting distinct pathways. In vivo, Cdh11-/- mice displayed defective efferocytosis and increased accumulation of apoptotic debris in pristane-induced lupus. Further, Cdh11-/- mice had enhanced systemic inflammation and autoimmune inflammation with increased anti-dsDNA autoantibodies, splenomegaly, type I interferons, and inflammatory cytokines. Paradoxically, at the tissue level, Cdh11-/- mice were protected against glomerulonephritis, indicating a dual role in murine lupus. Finally, SLE patients had increased serum CDH11 compared to controls. CONCLUSION This study highlights a novel role of CDH11 in regulating myeloid cells and efferocytosis and its potential as a contributor to development in autoimmunity murine lupus. Despite the increase in autoimmunity, Cdh11-/- mice developed decreased tissue inflammation and damage.
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Affiliation(s)
- Thandiwe Chavula
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Sarah To
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer Smith
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Mesias Pedroza
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jena Nimri
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Sridevi Devaraj
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA; Pathology Department, Texas Children's Hospital, Houston, TX, USA
| | - Scott Wenderfer
- Department of Pediatric Nephrology, B.C. Children's Hospital, Vancouver, BC, Canada
| | - Tiphanie P Vogel
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA; Department of Pediatrics-Rheumatology, Baylor College of Medicine, Houston, TX, USA; Division of Rheumatology, Texas Children's Hospital, Houston, TX, USA
| | - Sandeep K Agarwal
- Section of Immunology, Allergy and Rheumatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.
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He X, Jiang L, Hu L, Du P, Zhu M, Wu H, Zhao M, Lu Q. Mivebresib alleviates systemic lupus erythematosus-associated diffuse alveolar hemorrhage via inhibiting infiltration of monocytes and M1 polarization of macrophages. Int Immunopharmacol 2023; 120:110305. [PMID: 37182455 DOI: 10.1016/j.intimp.2023.110305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/23/2023] [Accepted: 05/05/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND Diffuse alveolar hemorrhage (DAH) is a serious complication that can arise from systemic lupus erythematosus (SLE) and other autoimmune diseases. While current treatments for DAH have limitations and adverse side effects, recent evidence suggests that inflammatory macrophages play a crucial role in the development of DAH. In this study, we investigated Mivebresib, a BET protein-bromodomain-containing protein 4 (BRD4) inhibitor, as a potential treatment for DAH. RESULTS Our findings show that Mivebresib effectively protected C57BL/6J mice against pristane-induced DAH by inhibiting the migration and polarization of monocytes and macrophages, as well as pathogenic B and T cells. Specifically, Mivebresib modified the distribution of leukocytes, impeded the polarization of inflammatory macrophages, and reduced the frequency of CD19 + CD5 + B cells in the lungs of pristane-treated mice. Furthermore, in vitro experiments demonstrated that Mivebresib inhibited LPS-induced M1 polarization of macrophages and the expression of pro-inflammatory cytokines, M1 marker genes, and chemokines-chemokine receptors while thwarting the secretion of IL-6 and TNF-α. Transcriptomic analysis suggested and experiments comfimed that Mivebresib inhibits M1 polarization via interrupting the p300/BRD4/HIF1A axis. CONCLUSIONS Our study demonstrates that Mivebresib has therapeutic potential for the life-threatening complication of DAH caused by SLE. By inhibiting macrophage polarization and the infiltration of inflammatory cells, Mivebresib may offer a promising treatment option for patients suffering from this disease.
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Affiliation(s)
- Xieling He
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Li Jiang
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Longyuan Hu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Pei Du
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Ming Zhu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Haijing Wu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Ming Zhao
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences, Nanjing, China; Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China; Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, China; Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital, Central South University, Changsha, China.
| | - Qianjin Lu
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences, Nanjing, China; Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China; Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, China; Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital, Central South University, Changsha, China.
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Zhuang H, Hudson E, Han S, Arja RD, Hui W, Lu L, Reeves WH. Microvascular lung injury and endoplasmic reticulum stress in systemic lupus erythematosus-associated alveolar hemorrhage and pulmonary vasculitis. Am J Physiol Lung Cell Mol Physiol 2022; 323:L715-L729. [PMID: 36255715 PMCID: PMC9744657 DOI: 10.1152/ajplung.00051.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 10/13/2022] [Accepted: 10/13/2022] [Indexed: 12/14/2022] Open
Abstract
Human COPA mutations affecting retrograde Golgi-to-endoplasmic reticulum (ER) protein transport cause diffuse alveolar hemorrhage (DAH) and ER stress ("COPA syndrome"). Patients with SLE also can develop DAH. C57BL/6 (B6) mice with pristane-induced lupus develop monocyte-dependent DAH indistinguishable from human DAH, whereas BALB/c mice are resistant. We examined Copa and ER stress in pristane-induced lupus. Copa expression, ER stress, vascular injury, and apoptosis were assessed in mice and COPA was quantified in blood from patients with SLE. Copa mRNA and protein expression were impaired in B6 mice with pristane-induced DAH, but not in pristane-treated BALB/c mice. An ER stress response (increased Hsp5a/BiP, Ddit3/CHOP, Eif2a, and spliced Xbp1) was seen in lungs from pristane-treated B6, but not BALB/c, mice. Resistance of BALB/c mice to DAH was overcome by treating them with low-dose thapsigargin plus pristane. CB6F1 mice did not develop DAH or ER stress, suggesting that susceptibility was recessive. Increased pulmonary expression of von Willebrand factor (Vwf), a marker of endothelial injury, and the chemokine Ccl2 in DAH suggested that pristane promotes lung microvascular injury and monocyte recruitment. Consistent with that possibility, lung endothelial cells and infiltrating bone marrow-derived cells from pristane-treated B6 mice expressed BiP and showed evidence of apoptosis (annexin-V and activated caspase-3 staining). COPA expression also was low in patients with SLE with lung involvement. Pristane-induced DAH may be initiated by endothelial injury, resulting in ER stress, apoptosis of lung endothelial cells, and recruitment of myeloid cells that propagate lung injury. The pathogenesis of DAH in SLE and COPA syndrome may overlap.
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Affiliation(s)
- Haoyang Zhuang
- Division of Rheumatology, Allergy, & Clinical Immunology, University of Florida, Gainesville, Florida
| | - Erin Hudson
- Division of Rheumatology, Allergy, & Clinical Immunology, University of Florida, Gainesville, Florida
| | - Shuhong Han
- Division of Rheumatology, Allergy, & Clinical Immunology, University of Florida, Gainesville, Florida
| | - Rawad Daniel Arja
- Division of Rheumatology, Allergy, & Clinical Immunology, University of Florida, Gainesville, Florida
| | - Winnie Hui
- Division of Rheumatology, Allergy, & Clinical Immunology, University of Florida, Gainesville, Florida
| | - Li Lu
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, Florida
| | - Westley H Reeves
- Division of Rheumatology, Allergy, & Clinical Immunology, University of Florida, Gainesville, Florida
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, Florida
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Carrillo-Rodríguez P, Robles-Guirado JÁ, Cruz-Palomares A, Palacios-Pedrero MÁ, González-Paredes E, Más-Ciurana A, Franco-Herrera C, Ruiz-de-Castroviejo-Teba PA, Lario A, Longobardo V, Montosa-Hidalgo L, Pérez-Sánchez-Cañete MM, Corzo-Corbera MM, Redondo-Sánchez S, Jodar AB, Blanco FJ, Zumaquero E, Merino R, Sancho J, Zubiaur M. Extracellular vesicles from pristane-treated CD38-deficient mice express an anti-inflammatory neutrophil protein signature, which reflects the mild lupus severity elicited in these mice. Front Immunol 2022; 13:1013236. [DOI: 10.3389/fimmu.2022.1013236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
In CD38-deficient (Cd38-/-) mice intraperitoneal injection of pristane induces a lupus-like disease, which is milder than that induced in WT mice, showing significant differences in the inflammatory and autoimmune processes triggered by pristane. Extracellular vesicles (EV) are present in all body fluids. Shed by cells, their molecular make-up reflects that of their cell of origin and/or tissue pathological situation. The aim of this study was to analyze the protein composition, protein abundance, and functional clustering of EV released by peritoneal exudate cells (PECs) in the pristane experimental lupus model, to identify predictive or diagnostic biomarkers that might discriminate the autoimmune process in lupus from inflammatory reactions and/or normal physiological processes. In this study, thanks to an extensive proteomic analysis and powerful bioinformatics software, distinct EV subtypes were identified in the peritoneal exudates of pristane-treated mice: 1) small EV enriched in the tetraspanin CD63 and CD9, which are likely of exosomal origin; 2) small EV enriched in CD47 and CD9, which are also enriched in plasma-membrane, membrane-associated proteins, with an ectosomal origin; 3) small EV enriched in keratins, ECM proteins, complement/coagulation proteins, fibrin clot formation proteins, and endopetidase inhibitor proteins. This enrichment may have an inflammation-mediated mesothelial-to-mesenchymal transition origin, representing a protein corona on the surface of peritoneal exudate EV; 4) HDL-enriched lipoprotein particles. Quantitative proteomic analysis allowed us to identify an anti-inflammatory, Annexin A1-enriched pro-resolving, neutrophil protein signature, which was more prominent in EV from pristane-treated Cd38-/- mice, and quantitative differences in the protein cargo of the ECM-enriched EV from Cd38-/- vs WT mice. These differences are likely to be related with the distinct inflammatory outcome shown by Cd38-/- vs WT mice in response to pristane treatment. Our results demonstrate the power of a hypothesis-free and data-driven approach to transform the heterogeneity of the peritoneal exudate EV from pristane-treated mice in valuable information about the relative proportion of different EV in a given sample and to identify potential protein markers specific for the different small EV subtypes, in particular those proteins defining EV involved in the resolution phase of chronic inflammation.
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Han S, Zhuang H, Arja RD, Reeves WH. A novel monocyte differentiation pattern in pristane-induced lupus with diffuse alveolar hemorrhage. eLife 2022; 11:e76205. [PMID: 36264674 PMCID: PMC9584606 DOI: 10.7554/elife.76205] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 10/10/2022] [Indexed: 11/29/2022] Open
Abstract
Pristane causes chronic peritoneal inflammation resulting in lupus, which in C57BL/6 mice is complicated by lung microvascular injury and diffuse alveolar hemorrhage (DAH). Mineral oil (MO) also causes inflammation, but not lupus or DAH. Since monocyte depletion prevents DAH, we examined the role of monocytes in the disease. Impaired bone marrow (BM) monocyte egress in Ccr2-/- mice abolished DAH, confirming the importance of monocyte recruitment to the lung. Circulating Ly6Chi monocytes from pristane-treated mice exhibited increased annexin-V staining in comparison with MO-treated controls without evidence of apoptosis, suggesting that pristane alters the distribution of phosphatidylserine in the plasma membrane before or shortly after monocyte egress from the BM. Plasma membrane asymmetry also was impaired in Nr4a1-regulated Ly6Clo/- 'patrolling' monocytes, which are derived from Ly6Chi precursors. Patrolling Ly6Clo/- monocytes normally promote endothelial repair, but their phenotype was altered in pristane-treated mice. In contrast to MO-treated controls, Nr4a1-regulated Ly6Clo/- monocytes from pristane-treated mice were CD138+, expressed more TremL4, a protein that amplifies TLR7 signaling, and exuberantly produced TNFα in response to TLR7 stimulation. TremL4 expression on these novel CD138+ monocytes was regulated by Nr4a1. Thus, monocyte CD138, high TremL4 expression, and annexin-V staining may define an activated/inflammatory subtype of patrolling monocytes associated with DAH susceptibility. By altering monocyte development, pristane exposure may generate activated Ly6Chi and Ly6Clo/- monocytes, contributing to lung microvascular endothelial injury and DAH susceptibility.
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Affiliation(s)
- Shuhong Han
- Division of Rheumatology, Allergy, & Clinical Immunology, University of FloridaGainesvilleUnited States
| | - Haoyang Zhuang
- Division of Rheumatology, Allergy, & Clinical Immunology, University of FloridaGainesvilleUnited States
| | - Rawad Daniel Arja
- Division of Rheumatology, Allergy, & Clinical Immunology, University of FloridaGainesvilleUnited States
| | - Westley H Reeves
- Division of Rheumatology, Allergy, & Clinical Immunology, University of FloridaGainesvilleUnited States
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Zhang M, Johnson-Stephenson TK, Wang W, Wang Y, Li J, Li L, Zen K, Chen X, Zhu D. Mesenchymal stem cell-derived exosome-educated macrophages alleviate systemic lupus erythematosus by promoting efferocytosis and recruitment of IL-17+ regulatory T cell. STEM CELL RESEARCH & THERAPY 2022; 13:484. [PMID: 36153633 PMCID: PMC9509559 DOI: 10.1186/s13287-022-03174-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 09/11/2022] [Indexed: 11/21/2022]
Abstract
Background Anti-inflammatory polarized macrophages are reported to alleviate systemic lupus erythematosus (SLE). Our previous studies have demonstrated that exosomes from adipose-derived stem cells promote the anti-inflammatory polarization of macrophages. However, the possible therapeutic effect of exosomes from stem cells on SLE remains unexplored.
Methods Exosomes were isolated from the conditioned medium of bone marrow-derived mesenchymal stem cells using ultrafiltration and size-exclusion chromatography and were identified by nanoparticle tracking analysis and immunoblotting of exosomal-specific markers. Macrophages were collected from the MRL/lpr mouse kidney. The phenotype of macrophages was identified by immunoblotting for intracellular markers-inducible nitric oxide synthase (iNOS) and arginase-1 (Arg-1), and flow cytometry for macrophage markers F4/80, CD86, CD206, B7H4, and CD138. Pristane-induced murine lupus nephritis models were employed for in vivo study. Results When macrophages from the kidney of the MRL/lpr mice were treated with exosomes from bone marrow-derived mesenchymal stem cells (BM-MSCs), the upregulation of CD206, B7H4, CD138, Arg-1, CCL20, and anti-inflammatory cytokines was observed, which suggested that the macrophages were polarized to a specific anti-inflammatory phenotype. These anti-inflammatory macrophages produced low levels of reactive oxygen species (ROS) but had a high efferocytosis activity and promoted regulatory T (Treg) cell recruitment. Moreover, exosome injection stimulated the anti-inflammatory polarization of macrophages and increased the production of IL-17+ Treg cells in a pristane-induced murine lupus nephritis model. We observed that exosomes from BMMSCs depleted of microRNA-16 (miR-16) and microRNA-21 (miR-21) failed to downregulate PDCD4 and PTEN in macrophages, respectively, and attenuated exosome-induced anti-inflammatory polarization. Conclusion Our findings provide evidence that exosomes from BMMSCs promote the anti-inflammatory polarization of macrophages. These macrophages alleviate SLE nephritis in lupus mice by consuming apoptotic debris and inducing the recruitment of Treg cells. We identify that exosomal delivery of miR-16 and miR-21 is a significant contributor to the polarization of macrophages. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-03174-7.
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Gordon RA, Giannouli C, Raparia C, Bastacky SI, Marinov A, Hawse W, Cattley R, Tilstra JS, Campbell AM, Nickerson KM, Davidson A, Shlomchik MJ. Rubicon promotes rather than restricts murine lupus and is not required for LC3-associated phagocytosis. JCI Insight 2022; 7:155537. [PMID: 35192551 PMCID: PMC9057630 DOI: 10.1172/jci.insight.155537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/18/2022] [Indexed: 01/03/2023] Open
Abstract
NADPH oxidase deficiency exacerbates lupus in murine models and patients, but the mechanisms remain unknown. It is hypothesized that NADPH oxidase suppresses autoimmunity by facilitating dead cell clearance via LC3-associated phagocytosis (LAP). The absence of LAP reportedly causes an autoinflammatory syndrome in aged, nonautoimmune mice. Prior work implicated cytochrome b-245, β polypeptide (CYBB), a component of the NADPH oxidase complex, and the RUN and cysteine-rich domain-containing Beclin 1-interacting protein (RUBICON) as requisite for LAP. To test the hypothesis that NADPH oxidase deficiency exacerbates lupus via a defect in LAP, we deleted Rubicon in the B6.Sle1.Yaa and MRL.Faslpr lupus mouse models. Under this hypothesis, RUBICON deficiency should phenocopy NADPH oxidase deficiency, as both work in the same pathway. However, we observed the opposite - RUBICON deficiency resulted in reduced mortality, renal disease, and autoantibody titers to RNA-associated autoantigens. Given that our data contradict the published role for LAP in autoimmunity, we assessed whether CYBB and RUBICON are requisite for LAP. We found that LAP is not dependent on either of these 2 pathways. To our knowledge, our data reveal RUBICON as a novel regulator of SLE, possibly by a B cell-intrinsic mechanism, but do not support a role for LAP in lupus.
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Affiliation(s)
- Rachael A. Gordon
- Department of Immunology and,Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Christina Giannouli
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Chirag Raparia
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Sheldon I. Bastacky
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | | | | | | | - Jeremy S. Tilstra
- Department of Immunology and,Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Allison M. Campbell
- Department of Immunobiology, Yale University School of Medicine, New Haven Connecticut, USA
| | | | - Anne Davidson
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, New York, USA
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Ou P, Stanek A, Huan Z, Roman CAJ, Huan C. SMS2 deficiency impairs PKCδ-regulated B cell tolerance in the germinal center. Cell Rep 2021; 36:109624. [PMID: 34469734 DOI: 10.1016/j.celrep.2021.109624] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 06/14/2021] [Accepted: 08/05/2021] [Indexed: 11/29/2022] Open
Abstract
B cell tolerance prevents autoimmunity by deleting or deactivating autoreactive B cells that otherwise may cause autoantibody-driven disorders, including systemic lupus erythematosus (lupus). Lupus is characterized by immunoglobulin Gs carrying a double-stranded (ds)-DNA autospecificity derived mainly from somatic hypermutation in the germinal center (GC), pointing to a checkpoint breach of GC B cell tolerance that leads to lupus. However, tolerance mechanisms in the GC remain poorly understood. Here, we show that upregulated sphingomyelin synthase 2 (SMS2) in anti-dsDNA GC B cells induces apoptosis by directly activating protein kinase C δ (PKCδ)'s pro-apoptotic activity. This tolerance mechanism prevents lupus autoimmunity in C57/BL6 mice and can be stimulated pharmacologically to inhibit lupus pathogenesis in lupus-prone NZBWF1 mice. Patients with lupus consistently have substantially reduced SMS2 expression in B cells and to an even greater extent in autoimmune-prone, age-associated B cells, suggesting that patients with lupus have insufficient SMS2-regulated B cell tolerance.
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Affiliation(s)
- Peiqi Ou
- Program in Molecular and Cellular Biology, The School of Graduate Studies, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Albert Stanek
- Department of Surgery, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Zack Huan
- Department of Cell Biology, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Christopher A J Roman
- Department of Cell Biology, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY 11203, USA.
| | - Chongmin Huan
- Department of Surgery, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY 11203, USA; Department of Cell Biology, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY 11203, USA.
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10
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Zhuang H, Han S, Lu L, Reeves WH. Myxomavirus serpin alters macrophage function and prevents diffuse alveolar hemorrhage in pristane-induced lupus. Clin Immunol 2021; 229:108764. [PMID: 34089860 PMCID: PMC10619960 DOI: 10.1016/j.clim.2021.108764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 04/19/2021] [Accepted: 05/31/2021] [Indexed: 01/19/2023]
Abstract
C57BL/6 mice with pristane-induced lupus develop macrophage-dependent diffuse alveolar hemorrhage (DAH), which is blocked by treatment with liver X receptor (LXR) agonists and is exacerbated by low IL-10 levels. Serp-1, a myxomavirus-encoded serpin that impairs macrophage activation and plasminogen activation, blocks DAH caused by MHV68 infection. We investigated whether Serp-1 also could block DAH in pristane-induced lupus. Pristane-induced DAH was prevented by treatment with recombinant Serp-1 and macrophages from Serp1-treated mice exhibited an anti-inflammatory M2-like phenotype. Therapy activated LXR, promoting M2 polarization and expression of Kruppel-like factor-4 (KLH4), which upregulates IL-10. In contrast, deficiency of tissue plasminogen activator or plasminogen activator inhibitor had little effect on DAH. We conclude that Serp-1 blocks pristane-induced lung hemorrhage by enhancing LXR-regulated M2 macrophage polarization and KLH4-regulated IL-10 production. In view of the similarities between DAH in pristane-treated mice and SLE patients, Serp-1 may represent a potential new therapy for this severe complication of SLE.
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Affiliation(s)
- Haoyang Zhuang
- Division of Rheumatology & Clinical Immunology, University of Florida, Gainesville, FL 32610, United States of America.
| | - Shuhong Han
- Division of Rheumatology & Clinical Immunology, University of Florida, Gainesville, FL 32610, United States of America
| | - Li Lu
- Department of Pathology, Immunology & Laboratory Medicine, University of Florida, Gainesville, FL 32610, United States of America
| | - Westley H Reeves
- Division of Rheumatology & Clinical Immunology, University of Florida, Gainesville, FL 32610, United States of America
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Castejón ML, Montoya T, Alarcón-de-la-Lastra C, González-Benjumea A, Vázquez-Román MV, Sánchez-Hidalgo M. Dietary oleuropein and its acyl derivative ameliorate inflammatory response in peritoneal macrophages from pristane-induced SLE mice via canonical and noncanonical NLRP3 inflammasomes pathway. Food Funct 2021; 11:6622-6631. [PMID: 32656558 DOI: 10.1039/d0fo00235f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Systemic lupus erythematosus (SLE) is a multifactorial autoimmune disease without an effective and safe treatment. Besides, macrophages are the major components of the innate immune system and play a critical role in the inflammation process in SLE. Secoiridoids from olive tree are phenolic compounds which have shown important pharmacological effects. Particularly, oleuropein (OL) has shown antioxidant, anti-inflammatory and immunomodulatory properties suggesting a potential application in a large number of inflammatory and reactive oxygen species (ROS)-mediated diseases. In addition, different studies have shown the importance of acyl derivatives of natural phenols due to their better hydrophilic/lipophilic balance.
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Affiliation(s)
- M L Castejón
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville, Spain.
| | - T Montoya
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville, Spain.
| | | | - A González-Benjumea
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, Seville, Spain
| | - M V Vázquez-Román
- Department of Normal and Pathological Cytology and Histology, Faculty of Medicine, University of Seville, Seville, Spain
| | - M Sánchez-Hidalgo
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville, Spain.
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12
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Han S, Zhuang H, Lee PY, Li M, Yang L, Nigrovic PA, Reeves WH. NF-E2-Related Factor 2 Regulates Interferon Receptor Expression and Alters Macrophage Polarization in Lupus. Arthritis Rheumatol 2020; 72:1707-1720. [PMID: 32500632 DOI: 10.1002/art.41383] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 05/26/2020] [Indexed: 01/11/2023]
Abstract
OBJECTIVE Pristane-induced lupus is associated with nonresolving inflammation and deficiency of proresolving macrophages. Proresolving nonclassic macrophages (NCMs) are less responsive to type I interferon (IFN) than classic macrophages (CMs; which are proinflammatory), reflecting their relative expression levels of the type I IFN receptor (IFNAR). This study was undertaken to investigate the regulation of IFNAR expression in macrophages. METHODS We carried out gene expression profiling of purified CMs and NCMs from mice treated with pristane (which develop lupus) or mineral oil (non-lupus controls). Macrophage differentiation and IFNAR expression were examined in mice treated with NF-E2-related factor 2 (Nrf2) activators and inhibitors and in Nrf2-deficient mice. Nrf2 activity was also assessed in blood cells from patients with systemic lupus erythematosus (SLE). Significant differences were determined by Student's t-test. RESULTS RNA sequencing revealed increased expression of genes regulated by the transcription factor Nrf2 in NCMs from mineral oil-treated versus pristane-treated mice and in NCMs versus CMs. The Nrf2 activator CDDO-imidazole (CDDO-Im) decreased CMs (P < 0.0001) and promoted the development of proresolving NCMs (P = 0.06), whereas the Nrf2 inhibitor brusatol increased CMs (P < 0.05) and decreased NCMs (P < 0.001). CDDO-Im decreased Ifnar1 (P < 0.001) and IFN-stimulated gene (ISG) expression in macrophages and alleviated oxidative stress (P < 0.05), whereas brusatol had the opposite effect (P < 0.01). Moreover, Ifnar1 and ISG expression levels were higher in Nrf2-knockout mice than controls (P < 0.05). As seen in mice with lupus, SLE patients showed evidence of low Nrf2 activity. CONCLUSION Our findings indicate that Nrf2 activation favors the resolution of chronic inflammation in lupus. Since autoantibody production and lupus nephritis depend on IFNAR signaling, the ability of Nrf2 activators to repolarize macrophages and reduce the INF signature suggests that these agents may warrant consideration for treating lupus.
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Affiliation(s)
| | | | - Pui Y Lee
- Boston Children's Hospital, Boston, Massachusetts
| | | | | | - Peter A Nigrovic
- Boston Children's Hospital and Brigham and Women's Hospital, Boston, Massachusetts
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Abdelhamid L, Cabana-Puig X, Swartwout B, Lee J, Li S, Sun S, Li Y, Ross AC, Cecere TE, LeRoith T, Werre SR, Wang H, Reilly CM, Luo XM. Retinoic Acid Exerts Disease Stage-Dependent Effects on Pristane-Induced Lupus. Front Immunol 2020; 11:408. [PMID: 32265909 PMCID: PMC7103630 DOI: 10.3389/fimmu.2020.00408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/21/2020] [Indexed: 12/17/2022] Open
Abstract
We previously showed that all-trans-retinoic acid (tRA), an active metabolite of vitamin A, exacerbated pre-existing autoimmunity in lupus; however, its effects before the development of autoimmunity are unknown. Here, using a pristane-induced model, we show that tRA exerts differential effects when given at the initiation vs. continuation phase of lupus. Unlike tRA treatment during active disease, pre-pristane treatment with tRA aggravated glomerulonephritis through increasing renal expression of pro-fibrotic protein laminin β1, activating bone marrow conventional dendritic cells (cDCs), and upregulating the interaction of ICAM-1 and LFA-1 in the spleen, indicating an active process of leukocyte activation and trafficking. Transcriptomic analysis revealed that prior to lupus induction, tRA significantly upregulated the expression of genes associated with cDC activation and migration. Post-pristane tRA treatment, on the other hand, did not significantly alter the severity of glomerulonephritis; rather, it exerted immunosuppressive functions of decreasing circulatory and renal deposition of autoantibodies as well as suppressing the renal expression of proinflammatory cytokines and chemokines. Together, these findings suggest that tRA differentially modulate lupus-associated kidney inflammation depending on the time of administration. Interestingly, both pre- and post-pristane treatments with tRA reversed pristane-induced leaky gut and modulated the gut microbiota in a similar fashion, suggesting a gut microbiota-independent mechanism by which tRA affects the initiation vs. continuation phase of lupus.
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Affiliation(s)
- Leila Abdelhamid
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Xavier Cabana-Puig
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Brianna Swartwout
- Translational Biology, Medicine and Health Graduate Program, Virginia Polytechnic Institute and State University, Roanoke, VA, United States
| | - Jiyoung Lee
- Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Song Li
- Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Sha Sun
- Department of Development and Cell Biology, University of California, Irvine, Irvine, CA, United States
| | - Yaqi Li
- Department of Nutritional Sciences, Pennsylvania State University, University Park, PA, United States
| | - A Catharine Ross
- Department of Nutritional Sciences, Pennsylvania State University, University Park, PA, United States
| | - Thomas E Cecere
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Tanya LeRoith
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Stephen R Werre
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Haifeng Wang
- College of Animal Science, Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou, China
| | - Christopher M Reilly
- Department of Cell Biology and Physiology, Edward via College of Osteopathic Medicine, Blacksburg, VA, United States
| | - Xin M Luo
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
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Abstract
Until recently, autoimmune disease research has primarily been focused on elucidating the role of the adaptive immune system. In the past decade or so, the role of the innate immune system in the pathogenesis of autoimmunity has increasingly been realized. Recent findings have elucidated paradigm-shifting concepts, for example, the implications of "trained immunity" and a dysbiotic microbiome in the susceptibility of predisposed individuals to clinical autoimmunity. In addition, the application of modern technologies such as the quantum dot (Qdot) system and 'Omics' (e.g., genomics, proteomics, and metabolomics) data-processing tools has proven fruitful in revisiting mechanisms underlying autoimmune pathogenesis and in identifying novel therapeutic targets. This review highlights recent findings discussed at the American Autoimmune Related Disease Association (AARDA) 2019 colloquium. The findings covering autoimmune diseases and autoinflammatory diseases illustrate how new developments in common innate immune pathways can contribute to the better understanding and management of these immune-mediated disorders.
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15
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Han S, Zhuang H, Lee PY, Li M, Yang L, Nigrovic PA, Reeves WH. Differential Responsiveness of Monocyte and Macrophage Subsets to Interferon. Arthritis Rheumatol 2020; 72:100-113. [PMID: 31390156 PMCID: PMC6935410 DOI: 10.1002/art.41072] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/01/2019] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Peripheral blood mononuclear cells (PBMCs) in systemic lupus erythematosus (SLE) patients exhibit a gene expression program (interferon [IFN] signature) that is attributed to overproduction of type I IFNs by plasmacytoid dendritic cells. Type I IFNs have been thought to play a role in the pathogenesis of SLE. This study was undertaken to examine an unexpected influence of monocyte/macrophages on the IFN signature. METHODS Proinflammatory (classic) and antiinflammatory (nonclassic) monocyte/macrophages were sorted from mice and analyzed by RNA sequencing and quantitative polymerase chain reaction (qPCR). Type I IFN-α/β/ω receptor (IFNAR-1) expression was determined by qPCR and flow cytometry. Macrophages were stimulated in vitro with IFNα, and pSTAT1was measured. RESULTS Transcriptional profiling of peritoneal macrophages from mice with pristane-induced SLE unexpectedly indicated a strong IFN signature in classic, but not nonclassic, monocyte/macrophages exposed to the same type I IFN concentrations. Ifnar1 messenger RNA and IFNAR surface staining were higher in classic monocyte/macrophages versus nonclassic monocyte/macrophages (P < 0.0001 and P < 0.05, respectively, by Student's t-test). Nonclassic monocyte/macrophages were also relatively insensitive to IFNα-driven STAT1 phosphorylation. Humans exhibited a similar pattern: higher IFNAR expression (P < 0.0001 by Student's t-test) and IFNα-stimulated gene expression (P < 0.01 by paired Wilcoxon's rank sum test) in classic monocyte/macrophages and lower levels in nonclassic monocyte/macrophages. CONCLUSION This study revealed that the relative abundance of different monocyte/macrophage subsets helps determine the magnitude of the IFN signature. Responsiveness to IFNα signaling reflects differences in IFNAR expression in classic (high IFNAR) compared to nonclassic (low IFNAR) monocyte/macrophages. Thus, the IFN signature depends on both type I IFN production and the responsiveness of monocyte/macrophages to IFNAR signaling.
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Affiliation(s)
| | | | - Pui Y Lee
- Boston Children's Hospital, Boston, Massachusetts
| | | | | | - Peter A Nigrovic
- Boston Children's Hospital and Brigham and Women's Hospital, Boston, Massachusetts
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16
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Whole blood RNA signatures in leprosy patients identify reversal reactions before clinical onset: a prospective, multicenter study. Sci Rep 2019; 9:17931. [PMID: 31784594 PMCID: PMC6884598 DOI: 10.1038/s41598-019-54213-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/07/2019] [Indexed: 11/30/2022] Open
Abstract
Early diagnosis of leprosy is challenging, particularly its inflammatory reactions, the major cause of irreversible neuropathy in leprosy. Current diagnostics cannot identify which patients are at risk of developing reactions. This study assessed blood RNA expression levels as potential biomarkers for leprosy. Prospective cohorts of newly diagnosed leprosy patients, including reactions, and healthy controls were recruited in Bangladesh, Brazil, Ethiopia and Nepal. RNA expression in 1,090 whole blood samples was determined for 103 target genes for innate and adaptive immune profiling by dual color Reverse-Transcription Multiplex Ligation-dependent Probe Amplification (dcRT-MLPA) followed by cluster analysis. We identified transcriptomic biomarkers associated with leprosy disease, different leprosy phenotypes as well as high exposure to Mycobacterium leprae which respectively allow improved diagnosis and classification of leprosy patients and detection of infection. Importantly, a transcriptomic signature of risk for reversal reactions consisting of five genes (CCL2, CD8A, IL2, IL15 and MARCO) was identified based on cross-sectional comparison of RNA expression. In addition, intra-individual longitudinal analyses of leprosy patients before, during and after treatment of reversal reactions, indicated that several IFN-induced genes increased significantly at onset of reaction whereas IL15 decreased. This multi-site study, situated in four leprosy endemic areas, demonstrates the potential of host transcriptomic biomarkers as correlates of risk for leprosy. Importantly, a prospective five-gene signature for reversal reactions could predict reversal reactions at least 2 weeks before onset. Thus, transcriptomic biomarkers provide promise for early detection of these acute inflammatory episodes and thereby help prevent permanent neuropathy and disability in leprosy patients.
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Kumaran Satyanarayanan S, El Kebir D, Soboh S, Butenko S, Sekheri M, Saadi J, Peled N, Assi S, Othman A, Schif-Zuck S, Feuermann Y, Barkan D, Sher N, Filep JG, Ariel A. IFN-β is a macrophage-derived effector cytokine facilitating the resolution of bacterial inflammation. Nat Commun 2019; 10:3471. [PMID: 31375662 PMCID: PMC6677895 DOI: 10.1038/s41467-019-10903-9] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 06/05/2019] [Indexed: 12/31/2022] Open
Abstract
The uptake of apoptotic polymorphonuclear cells (PMN) by macrophages is critical for timely resolution of inflammation. High-burden uptake of apoptotic cells is associated with loss of phagocytosis in resolution phase macrophages. Here, using a transcriptomic analysis of macrophage subsets, we show that non-phagocytic resolution phase macrophages express a distinct IFN-β-related gene signature in mice. We also report elevated levels of IFN-β in peritoneal and broncho-alveolar exudates in mice during the resolution of peritonitis and pneumonia, respectively. Elimination of endogenous IFN-β impairs, whereas treatment with exogenous IFN-β enhances, bacterial clearance, PMN apoptosis, efferocytosis and macrophage reprogramming. STAT3 signalling in response to IFN-β promotes apoptosis of human PMNs. Finally, uptake of apoptotic cells promotes loss of phagocytic capacity in macrophages alongside decreased surface expression of efferocytic receptors in vivo. Collectively, these results identify IFN-β produced by resolution phase macrophages as an effector cytokine in resolving bacterial inflammation.
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Affiliation(s)
| | - Driss El Kebir
- Department of Pathology and Cell Biology, University of Montreal, and Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, H1T 2M4, Canada
| | - Soaad Soboh
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | - Sergei Butenko
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | - Meriem Sekheri
- Department of Pathology and Cell Biology, University of Montreal, and Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, H1T 2M4, Canada
| | - Janan Saadi
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | - Neta Peled
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | - Simaan Assi
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | - Amira Othman
- Department of Pathology and Cell Biology, University of Montreal, and Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, H1T 2M4, Canada
| | - Sagie Schif-Zuck
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | | | - Dalit Barkan
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel
| | - Noa Sher
- Tauber Bioinformatics Center, University of Haifa, Haifa, 3498838, Israel
| | - János G Filep
- Department of Pathology and Cell Biology, University of Montreal, and Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, H1T 2M4, Canada.
| | - Amiram Ariel
- Department of Biology and Human Biology, University of Haifa, Haifa, 3498838, Israel.
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18
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Early Peritoneal CC Chemokine Production Correlates with Divergent Inflammatory Phenotypes and Susceptibility to Experimental Arthritis in Mice. J Immunol Res 2019; 2019:2641098. [PMID: 30937315 PMCID: PMC6413398 DOI: 10.1155/2019/2641098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 12/18/2018] [Indexed: 12/15/2022] Open
Abstract
The inflammatory and autoimmune events preceding clinical symptoms in rheumatoid arthritis (RA) and other autoimmune diseases are difficult to study in human patients. Therefore, animal models that share immunologic and clinical features with human RA, such as pristane-induced arthritis (PIA), are valuable tools for assessing the primordial events related to arthritis susceptibility. PIA-resistant HIII and susceptible LIII mice were injected i.p. with pristane, and peritoneal lavage fluid was harvested in the early (7 days) and late (35 days) preclinical phases of PIA. Chemokine and cytokine levels were measured in lavage supernatant with ELISA, peritoneal inflammatory leukocytes were immunophenotyped by flow cytometry, and gene expression was determined by qRT-PCR. Leukocyte recruitment was quantitatively and qualitatively divergent in the peritoneum of HIII and LIII mice, with an early increase of CC chemokines (CCL2/CCL3/CCL5/CCL12/CCL22) in the susceptible LIII strain. Also, cytokines such as IL-12p40, IL-23, and IL-18 were elevated in LIII mice while IL-6 was increased in HIII animals. The results show that an early peritoneal CC chemokine response is an important feature of arthritis susceptibility and defines potential biomarkers in this model.
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Thieblemont N, Witko-Sarsat V, Ariel A. Regulation of macrophage activation by proteins expressed on apoptotic neutrophils: Subversion towards autoimmunity by proteinase 3. Eur J Clin Invest 2018; 48 Suppl 2:e12990. [PMID: 30039869 DOI: 10.1111/eci.12990] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/27/2018] [Indexed: 12/13/2022]
Abstract
Neutrophils are critically involved in host defence and they also modulate the inflammatory process. Turning the inflammatory response towards a resolutive outcome requires a dialogue between apoptotic neutrophils and proresolving macrophages through complex key molecular interactions controlling efferocytosis, anti-inflammatory reprogramming and ultimately immune regulation. In this review, we will first focus on recent molecular analyses aiming at characterizing the role of proteins expressed on apoptotic neutrophils and their cognate partners expressed on macrophages in the resolution of inflammation. These will include chemokine receptors and their ligands and annexin A1 and its receptor FPR2. We will next depict how the structural and enzymatic properties of proteinase 3 (PR3), the autoantigen in vasculitis, allow its expression on apoptotic neutrophils, which in turn affects efferocytosis and immune response associated with the clearance of apoptotic cells. This example illustrates that the fate of apoptotic neutrophils directly influences the resolution of inflammation and immune responses thereby potentially contributing to systemic and nonresolving inflammation as well as autoimmunity.
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Affiliation(s)
- Nathalie Thieblemont
- INSERM U1016 Cochin Institute, Paris, France.,CNRS UMR 8104, Paris, France.,Université Paris-Descartes, Paris, France.,Center of Excellence LABEX Inflamex, Paris, France
| | - Véronique Witko-Sarsat
- INSERM U1016 Cochin Institute, Paris, France.,CNRS UMR 8104, Paris, France.,Université Paris-Descartes, Paris, France.,Center of Excellence LABEX Inflamex, Paris, France
| | - Amiram Ariel
- Department of Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
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20
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Bhattacharya S, Aggarwal A. M2 macrophages and their role in rheumatic diseases. Rheumatol Int 2018; 39:769-780. [DOI: 10.1007/s00296-018-4120-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 08/02/2018] [Indexed: 12/21/2022]
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21
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García-Rodríguez S, Rosal-Vela A, Botta D, Cumba Garcia LM, Zumaquero E, Prados-Maniviesa V, Cerezo-Wallis D, Lo Buono N, Robles-Guirado JÁ, Guerrero S, González-Paredes E, Andrés-León E, Corbí Á, Mack M, Koch-Nolte F, Merino R, Zubiaur M, Lund FE, Sancho J. CD38 promotes pristane-induced chronic inflammation and increases susceptibility to experimental lupus by an apoptosis-driven and TRPM2-dependent mechanism. Sci Rep 2018; 8:3357. [PMID: 29463868 PMCID: PMC5820326 DOI: 10.1038/s41598-018-21337-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 02/02/2018] [Indexed: 12/19/2022] Open
Abstract
In this study, we investigated the role of CD38 in a pristane-induced murine model of lupus. CD38-deficient (Cd38-/-) but not ART2-deficient (Art2-/-) mice developed less severe lupus compared to wild type (WT) mice, and their protective phenotype consisted of (i) decreased IFN-I-stimulated gene expression, (ii) decreased numbers of peritoneal CCR2hiLy6Chi inflammatory monocytes, TNF-α-producing Ly6G+ neutrophils and Ly6Clo monocytes/macrophages, (iii) decreased production of anti-single-stranded DNA and anti-nRNP autoantibodies, and (iv) ameliorated glomerulonephritis. Cd38-/- pristane-elicited peritoneal exudate cells had defective CCL2 and TNF-α secretion following TLR7 stimulation. However, Tnf-α and Cxcl12 gene expression in Cd38-/- bone marrow (BM) cells was intact, suggesting a CD38-independent TLR7/TNF-α/CXCL12 axis in the BM. Chemotactic responses of Cd38-/- Ly6Chi monocytes and Ly6G+ neutrophils were not impaired. However, Cd38-/- Ly6Chi monocytes and Ly6Clo monocytes/macrophages had defective apoptosis-mediated cell death. Importantly, mice lacking the cation channel TRPM2 (Trpm2-/-) exhibited very similar protection, with decreased numbers of PECs, and apoptotic Ly6Chi monocytes and Ly6Clo monocytes/macrophages compared to WT mice. These findings reveal a new role for CD38 in promoting aberrant inflammation and lupus-like autoimmunity via an apoptosis-driven mechanism. Furthermore, given the implications of CD38 in the activation of TRPM2, our data suggest that CD38 modulation of pristane-induced apoptosis is TRPM2-dependent.
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Affiliation(s)
| | - Antonio Rosal-Vela
- Department of Cellular Biology and Immunology, IPBLN-CSIC, Granada, Spain
| | - Davide Botta
- Department of Microbiology, UAB, Birmingham, Alabama, USA
| | - Luz M Cumba Garcia
- Department of Cellular Biology and Immunology, IPBLN-CSIC, Granada, Spain
- Immunology Graduate Program, Mayo Clinic, Rochester, MN, USA
| | | | | | - Daniela Cerezo-Wallis
- Department of Cellular Biology and Immunology, IPBLN-CSIC, Granada, Spain
- Melanoma Group, CNIO, Madrid, Spain
| | - Nicola Lo Buono
- Department of Cellular Biology and Immunology, IPBLN-CSIC, Granada, Spain
- Laboratory of Immune-mediated Diseases, San Raffaele Diabetes Research Institute (DRI), Milano, Italy
| | | | | | | | | | - Ángel Corbí
- Department of Molecular Microbiology and Infection Biology, CIB-CSIC, Madrid, Spain
| | - Matthias Mack
- Department of Internal Medicine II, Nephrology, Regensburg University Medical Center, Regensburg, Germany
| | - Friedrich Koch-Nolte
- Institute of Immunology, University Medical Center Eppendorf-Hamburg, Hamburg, Germany
| | - Ramón Merino
- Department of Molecular and Cellular Signalling, IBBTEC-CSIC-UC, Santander, Spain
| | - Mercedes Zubiaur
- Department of Cellular Biology and Immunology, IPBLN-CSIC, Granada, Spain
| | - Frances E Lund
- Department of Microbiology, UAB, Birmingham, Alabama, USA
| | - Jaime Sancho
- Department of Cellular Biology and Immunology, IPBLN-CSIC, Granada, Spain.
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22
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Han S, Zhuang H, Shumyak S, Wu J, Xie C, Li H, Yang LJ, Reeves WH. Liver X Receptor Agonist Therapy Prevents Diffuse Alveolar Hemorrhage in Murine Lupus by Repolarizing Macrophages. Front Immunol 2018; 9:135. [PMID: 29456535 PMCID: PMC5801423 DOI: 10.3389/fimmu.2018.00135] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/16/2018] [Indexed: 12/20/2022] Open
Abstract
The generation of CD138+ phagocytic macrophages with an alternative (M2) phenotype that clear apoptotic cells from tissues is defective in lupus. Liver X receptor-alpha (LXRα) is an oxysterol-regulated transcription factor that promotes reverse cholesterol transport and alternative (M2) macrophage activation. Conversely, hypoxia-inducible factor 1-α (HIF1α) promotes classical (M1) macrophage activation. The objective of this study was to see if lupus can be treated by enhancing the generation of M2-like macrophages using LXR agonists. Peritoneal macrophages from pristane-treated mice had an M1 phenotype, high HIFα-regulated phosphofructokinase and TNFα expression (quantitative PCR, flow cytometry), and low expression of the LXRα-regulated gene ATP binding cassette subfamily A member 1 (Abca1) and Il10 vs. mice treated with mineral oil, a control inflammatory oil that does not cause lupus. Glycolytic metabolism (extracellular flux assays) and Hif1a expression were higher in pristane-treated mice (M1-like) whereas oxidative metabolism and LXRα expression were higher in mineral oil-treated mice (M2-like). Similarly, lupus patients’ monocytes exhibited low LXRα/ABCA1 and high HIF1α vs. controls. The LXR agonist T0901317 inhibited type I interferon and increased ABCA1 in lupus patients’ monocytes and in murine peritoneal macrophages. In vivo, T0901317 induced M2-like macrophage polarization and protected mice from diffuse alveolar hemorrhage (DAH), an often fatal complication of lupus. We conclude that end-organ damage (DAH) in murine lupus can be prevented using an LXR agonist to correct a macrophage differentiation abnormality characteristic of lupus. LXR agonists also decrease inflammatory cytokine production by human lupus monocytes, suggesting that these agents may be have a role in the pharmacotherapy of lupus.
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Affiliation(s)
- Shuhong Han
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Haoyang Zhuang
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Stepan Shumyak
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Jingfan Wu
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Chao Xie
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Hui Li
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Li-Jun Yang
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, United States
| | - Westley H Reeves
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Florida, Gainesville, FL, United States
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Li Y, Wu J, Xu L, Wu Q, Wan Z, Li L, Yu H, Li X, Li K, Zhang Q, Hou Z, Sun X, Chen H. Regulation of Leukocyte Recruitment to the Spleen and Peritoneal Cavity during Pristane-Induced Inflammation. J Immunol Res 2017; 2017:9891348. [PMID: 29201923 PMCID: PMC5671734 DOI: 10.1155/2017/9891348] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/20/2017] [Accepted: 08/27/2017] [Indexed: 02/05/2023] Open
Abstract
Chronic inflammation is associated with an increased number of leukocytes in the spleen, which are then redirected to the site of inflammation. However, it remains unknown how leukocyte recruitment is regulated. Herein, chronic inflammation was induced by intraperitoneal injection of pristane into mice. Leukocytes in the spleen or in the peritoneal cavity were quantified by flow cytometry. We found that the loss of IL-6 decreased macrophage recruitment to the spleen and the peritoneal cavity during pristane-induced inflammation. The loss of TNFα delayed the recruitment of neutrophils and macrophages to the spleen and inhibited the recruitment of neutrophils, macrophages, B cells, and T cells. The recruitment of neutrophils and macrophages into the spleen or peritoneal cavity was largely inhibited in the absence of LTα. The loss of TNFα receptor 1/2 resulted in reduced recruitment of neutrophils, macrophages, and dendritic cells into the spleen, but only neutrophil recruitment was inhibited in the peritoneal cavity. Similarly, a lack of B cells significantly impeded the recruitment of neutrophils, macrophages, and dendritic cells to the spleen. However, only macrophage recruitment was inhibited in the absence of T cells in the spleen. These data provide insight into the development of chronic inflammation induced by noninfectious substances.
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Affiliation(s)
- Yu Li
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
| | - Junping Wu
- 2Key Research Laboratory for Infectious Disease Prevention for State Administration of Traditional Chinese Medicine, Tianjin Institute of Respiratory Diseases, Tianjin Haihe Hospital, Tianjin 300350, China
- 3Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Long Xu
- 2Key Research Laboratory for Infectious Disease Prevention for State Administration of Traditional Chinese Medicine, Tianjin Institute of Respiratory Diseases, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Qi Wu
- 2Key Research Laboratory for Infectious Disease Prevention for State Administration of Traditional Chinese Medicine, Tianjin Institute of Respiratory Diseases, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Zhen Wan
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
| | - Li Li
- 3Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Hongzhi Yu
- 3Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Xue Li
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
| | - Kuan Li
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
| | - Qiuyang Zhang
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
| | - Zhili Hou
- 4Department of Tuberculosis, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Xin Sun
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
- 2Key Research Laboratory for Infectious Disease Prevention for State Administration of Traditional Chinese Medicine, Tianjin Institute of Respiratory Diseases, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Huaiyong Chen
- 1Department of Basic Medicine, Haihe Clinical College of Tianjin Medical University, Tianjin, China
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