1
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Li Z, Wu Y, Du J, Qian W, Wang S, Li F, Dong S, Jiao S. N-formylmethionine-leucyl-phenylalanine protects against irradiation-induced damage to hematopoiesis and intestines. Mol Med 2024; 30:145. [PMID: 39256638 PMCID: PMC11389335 DOI: 10.1186/s10020-024-00918-4] [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: 06/26/2024] [Accepted: 08/30/2024] [Indexed: 09/12/2024] Open
Abstract
BACKGROUND Ionizing radiation (IR), including radiotherapy, can exert lasting harm on living organisms. While liposaccharide (LPS) offers resistance to radiation damage, it also induces toxic responses. Thankfully, an LPS analogue called N-formylmethionine-leucyl-phenylalanine (fMLP) holds the potential to mitigate this toxicity, offering hope for radiation protection. METHODS Survival of C57BL/6 mice exposed to IR after administration with fMLP/LPS/WR-2721 or saline was recorded. Cell viability and apoptosis assay of bone marrow (BMC), spleen and small intestinal epithelial (HIECs) cells were tested by Cell Counting Kit-8 (CCK-8) and flow cytometry assay. Tissue damage was evaluated by Hematoxilin and Eosin (H&E), Ki-67, and TUNEL staining. RNA sequencing was performed to reveal potential mechanisms of fMLP-mediated radiation protection. Flow cytometry and western blot were performed to verify the radiation protection mechanism of fMLP on the cell cycle. RESULTS The survival rates of C57BL/6 mice exposed to ionizing radiation after administering fMLP increased. fMLP demonstrated low toxicity in vitro and in vivo, maintaining cell viability and mitigating radiation-induced apoptosis. Moreover, it protected against tissue damage in the hematopoietic and intestinal system. RNA sequencing shed light on fMLP's potential mechanism, suggesting its role in modulating innate immunity and cell cycling. This was evidenced by its ability to reverse radiation-induced G2/M phase arrests in HIECs. CONCLUSION fMLP serves as a promising radioprotective agent, preserving cells and radiosensitive tissues from IR. Through its influence on the cell cycle, particularly reversing radiation-induced arrest in G2/M phases, fMLP offers protection against IR's detrimental effects.
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Affiliation(s)
- Zhihua Li
- Chinese PLA Medical School, Beijing, 100853, China
| | - Yatong Wu
- The Postgraduate Training Base of Jinzhou Medical University (The PLA Rocket Force Characteristic Medical Center), Beijing, 100088, China
| | - Jicong Du
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
| | - Wen Qian
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
| | - Sinian Wang
- Department of Nuclear Radiation Injury and Monitoring, The PLA Rocket Force Characteristic Medical Center, Beijing, 100088, China
| | - Fengsheng Li
- Department of Nuclear Radiation Injury and Monitoring, The PLA Rocket Force Characteristic Medical Center, Beijing, 100088, China
| | - Suhe Dong
- PLA Rocket Force Characteristic Medical Center, Beijing, 100088, China.
| | - Shunchang Jiao
- Department of Oncology, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China.
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2
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Malavez-Cajigas SJ, Marini-Martinez FI, Lacourt-Ventura M, Rosario-Pacheco KJ, Ortiz-Perez NM, Velazquez-Perez B, De Jesús-Rojas W, Chertow DS, Strich JR, Ramos-Benítez MJ. HL-60 cells as a valuable model to study LPS-induced neutrophil extracellular traps release. Heliyon 2024; 10:e36386. [PMID: 39262993 PMCID: PMC11388390 DOI: 10.1016/j.heliyon.2024.e36386] [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: 04/20/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 09/13/2024] Open
Abstract
Neutrophil Extracellular Traps (NETs) present a paradoxical role in infectious diseases, contributing to both immunity and pathogenesis. The complex nature of this process necessitates further characterization to elucidate its clinical implications. However, studying NETs faces challenges with primary neutrophils due to their heterogeneity, short lifespan, and lack of adequate cryopreservation. Researchers often turn to alternative models, such as differentiated HL-60 cells (dHL-60). This study explored LPS-induced NETs formation in dHL-60 cells, revealing significant responses to LPS from Pseudomonas aeruginosa, although significantly lower than primary neutrophils. Moreover, Spleen Tyrosine Kinase (SYK) inhibition with R406, the active metabolite of the drug Fostamatinib, previously demonstrated to suppress NETs in primary neutrophils, effectively reduced NETs release in dHL-60 cells. dHL-60 cells, offering easier manipulation, consistent availability, and no donor variability in functional responses, possess characteristics suitable for high-throughput studies evaluating NETosis. Overall, dHL-60 cells may be a valuable in vitro model for deciphering the molecular mechanisms of NETosis in response to LPS, contributing to our available tools for understanding this complex immune process.
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Affiliation(s)
| | | | | | | | - Natalia M Ortiz-Perez
- Ponce Health Sciences University & Ponce Research Institute, Ponce, Puerto Rico, 00716, USA
| | | | | | - Daniel S Chertow
- Critical Care Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD, 20814, USA
| | - Jeffrey R Strich
- Critical Care Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD, 20814, USA
| | - Marcos J Ramos-Benítez
- Ponce Health Sciences University & Ponce Research Institute, Ponce, Puerto Rico, 00716, USA
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3
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Riaz B, Sohn S. Neutrophils in Inflammatory Diseases: Unraveling the Impact of Their Derived Molecules and Heterogeneity. Cells 2023; 12:2621. [PMID: 37998356 PMCID: PMC10670008 DOI: 10.3390/cells12222621] [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: 10/27/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
Inflammatory diseases involve numerous disorders and medical conditions defined by an insufficient level of self-tolerance. These diseases evolve over the course of a multi-step process through which environmental variables play a crucial role in the emergence of aberrant innate and adaptive immunological responses. According to experimental data accumulated over the past decade, neutrophils play a significant role as effector cells in innate immunity. However, neutrophils are also involved in the progression of numerous diseases through participation in the onset and maintenance of immune-mediated dysregulation by releasing neutrophil-derived molecules and forming neutrophil extracellular traps, ultimately causing destruction of tissues. Additionally, neutrophils have a wide variety of functional heterogeneity with adverse effects on inflammatory diseases. However, the complicated role of neutrophil biology and its heterogeneity in inflammatory diseases remains unclear. Moreover, neutrophils are considered an intriguing target of interventional therapies due to their multifaceted role in a number of diseases. Several approaches have been developed to therapeutically target neutrophils, involving strategies to improve neutrophil function, with various compounds and inhibitors currently undergoing clinical trials, although challenges and contradictions in the field persist. This review outlines the current literature on roles of neutrophils, neutrophil-derived molecules, and neutrophil heterogeneity in the pathogenesis of autoimmune and inflammatory diseases with potential future therapeutic strategies.
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Affiliation(s)
- Bushra Riaz
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea;
| | - Seonghyang Sohn
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea;
- Department of Microbiology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
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4
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Futosi K, Németh T, Horváth ÁI, Abram CL, Tusnády S, Lowell CA, Helyes Z, Mócsai A. Myeloid Src-family kinases are critical for neutrophil-mediated autoinflammation in gout and motheaten models. J Exp Med 2023; 220:e20221010. [PMID: 37074415 PMCID: PMC10120404 DOI: 10.1084/jem.20221010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 01/27/2023] [Accepted: 03/28/2023] [Indexed: 04/20/2023] Open
Abstract
Autoinflammatory diseases include a number of monogenic systemic inflammatory diseases, as well as acquired autoinflammatory diseases such as gout. Here, we show that the myeloid Src-family kinases Hck, Fgr, and Lyn are critical for experimental models of gout, as well as for genetically determined systemic inflammation in the Ptpn6me-v/me-v (motheaten viable) mouse model. The Hck-/-Fgr-/-Lyn-/- mutation abrogated various monosodium urate (MSU) crystal-induced pro-inflammatory responses of neutrophils, and protected mice from the development of gouty arthritis. The Src-family inhibitor dasatinib abrogated MSU crystal-induced responses of human neutrophils and reduced experimental gouty arthritis in mice. The Hck-/-Fgr-/-Lyn-/- mutation also abrogated spontaneous inflammation and prolonged the survival of the Ptpn6me-v/me-v mice. Spontaneous adhesion and superoxide release of Ptpn6me-v/me-v neutrophils were also abolished by the Hck-/-Fgr-/-Lyn-/- mutation. Excessive activation of tyrosine phosphorylation pathways in myeloid cells may characterize a subset of autoinflammatory diseases.
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Affiliation(s)
- Krisztina Futosi
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
- ELKH-SE Inflammation Physiology Research Group, Eötvös Loránd Research Network and Semmelweis University, Budapest, Hungary
| | - Tamás Németh
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
- MTA-SE “Lendület” Translational Rheumatology Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
- Department of Rheumatology and Clinical Immunology, Semmelweis University, Budapest, Hungary
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - Ádám I. Horváth
- Department of Pharmacology and Pharmacotherapy, Medical School and János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Clare L. Abram
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Simon Tusnády
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
| | - Clifford A. Lowell
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School and János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Pécs, Hungary
- PharmInVivo Ltd., Pécs, Hungary
| | - Attila Mócsai
- Department of Physiology, School of Medicine, Semmelweis University, Budapest, Hungary
- ELKH-SE Inflammation Physiology Research Group, Eötvös Loránd Research Network and Semmelweis University, Budapest, Hungary
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5
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Criado PR, Lorenzini D, Miot HA, Bueno-Filho R, Carneiro FRO, Ianhez M. New small molecules in dermatology: for the autoimmunity, inflammation and beyond. Inflamm Res 2023:10.1007/s00011-023-01744-w. [PMID: 37212867 DOI: 10.1007/s00011-023-01744-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 05/01/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023] Open
Abstract
OBJECTIVE AND DESIGN The discovery of new inflammatory pathways and the mechanism of action of inflammatory, autoimmune, genetic, and neoplastic diseases led to the development of immunologically driven drugs. We aimed to perform a narrative review regarding the rising of a new class of drugs capable of blocking important and specific intracellular signals in the maintenance of these pathologies: the small molecules. MATERIALS/METHODS A total of 114 scientific papers were enrolled in this narrative review. RESULTS We describe in detail the families of protein kinases-Janus Kinase (JAK), Src kinase, Syk tyrosine kinase, Mitogen-Activated Protein Kinase (MAPK), and Bruton Tyrosine Kinase (BTK)-their physiologic function and new drugs that block these pathways of intracellular signaling. We also detail the involved cytokines and the main metabolic and clinical implications of these new medications in the field of dermatology. CONCLUSIONS Despite having lower specificity compared to specific immunobiological therapies, these new drugs are effective in a wide variety of dermatological diseases, especially diseases that had few therapeutic options, such as psoriasis, psoriatic arthritis, atopic dermatitis, alopecia areata, and vitiligo.
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Affiliation(s)
- Paulo Ricardo Criado
- Faculdade de Medicina Do ABC, Post-Graduation Program, Full Researcher, Santo André, Rua Carneiro Leão 33, Vila Scarpelli, Santo André, São Paulo, Brazil.
| | - Daniel Lorenzini
- Santa Casa de Misericórida de Porto Alegre, Porto Alegre, RS, Brazil
| | - Hélio Amante Miot
- Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Botucatu, São Paulo, Brazil
| | - Roberto Bueno-Filho
- Ribeirão Preto Medical School-University of São Paulo, Ribeirão Preto, Brazil
| | | | - Mayra Ianhez
- Universidade Federal de Goiás (UFG) E Hospital de Doenças Tropicais (HDT-GO), Goiânia, Goiás, Brazil
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6
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Li L, Xu X, Lv K, Zheng G, Wang H, Chen S, Huang L, Liu Y, Zhang Y, Tang Z, Zhang L, Wang J, Qiao J, Li H, Wang X, Yao G, Fang C. Asebogenin suppresses thrombus formation via inhibition of Syk phosphorylation. Br J Pharmacol 2023; 180:287-307. [PMID: 36166754 DOI: 10.1111/bph.15964] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/24/2022] [Accepted: 09/11/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND AND PURPOSE Thrombosis is a major cause of morbidity and mortality worldwide. Platelet activation by exposed collagen through glycoprotein VI (GPVI) and formation of neutrophil extracellular traps (NETs) are critical pathogenic factors for arterial and venous thrombosis. Both events are regulated by spleen tyrosine kinase (Syk)-mediated signalling events. Asebogenin is a dihydrochalcone whose pharmacological effects remain largely unknown. This study aims to investigate the antithrombotic effects of asebogenin and the underlying molecular mechanisms. EXPERIMENTAL APPROACH Platelet aggregation was assessed using an aggregometer. Platelet P-selectin exposure, integrin activation and calcium mobilization were determined by flow cytometry. NETs formation was assessed by SYTOX Green staining and immunohistochemistry. Quantitative phosphoproteomics, microscale thermophoresis, in vitro kinase assay and molecular docking combined with dynamics simulation were performed to characterize the targets of asebogenin. The in vivo effects of asebogenin on arterial thrombosis were investigated using FeCl3 -induced and laser-induced injury models, whereas those of venous thrombosis were induced by stenosis of the inferior vena cava. KEY RESULTS Asebogenin inhibited a series of GPVI-induced platelet responses and suppressed NETs formation induced by proinflammatory stimuli. Mechanistically, asebogenin directly interfered with the phosphorylation of Syk at Tyr525/526, which is important for its activation. Further, asebogenin suppressed arterial thrombosis demonstrated by decreased platelet accumulation and fibrin generation and attenuated venous thrombosis determined by reduced neutrophil accumulation and NETs formation, without increasing bleeding risk. CONCLUSION AND IMPLICATIONS Asebogenin exhibits potent antithrombotic effects by targeting Syk and is a potential lead compound for the development of efficient and safe antithrombotic agents.
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Affiliation(s)
- Li Li
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xulin Xu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Keyu Lv
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hao Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuai Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yi Liu
- DeepKinase Biotechnologies Ltd., Beijing, China
| | | | - Zhaoming Tang
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lili Zhang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jinyu Wang
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,The Key Laboratory of Oral and Maxillofacial Development and Regeneration of Hubei Province, Wuhan, Hubei, China
| | - Jianlin Qiao
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hongliang Li
- Laboratory of Chinese Herbal Pharmacology, Department of Pharmacy, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China.,Biomedical Research Institute, School of Pharmaceutical Sciences and Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, Hubei, China
| | - Xuanbin Wang
- Laboratory of Chinese Herbal Pharmacology, Department of Pharmacy, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China.,Biomedical Research Institute, School of Pharmaceutical Sciences and Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, Hubei, China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chao Fang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China
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7
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Prendecki M, Gulati K, Pisacano N, Pinheiro D, Bhatt T, Mawhin MA, Toulza F, Masuda ES, Cowburn A, Lodge KM, Tam FWK, Roufosse C, Pusey CD, McAdoo SP. Syk Activation in Circulating and Tissue Innate Immune Cells in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis. Arthritis Rheumatol 2023; 75:84-97. [PMID: 36428281 PMCID: PMC10099805 DOI: 10.1002/art.42321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 06/21/2022] [Accepted: 07/26/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Syk is a cytoplasmic protein tyrosine kinase that plays a role in signaling via B cell and Fc receptors (FcR). FcR engagement and signaling via Syk is thought to be important in antineutrophil cytoplasm antibody (ANCA) IgG-mediated neutrophil activation. This study was undertaken to investigate the role of Syk in ANCA-induced myeloid cell activation and vasculitis pathogenesis. METHODS Phosphorylation of Syk in myeloid cells from healthy controls and ANCA-associated vasculitis (AAV) patients was analyzed using flow cytometry. The effect of Syk inhibition on myeloperoxidase (MPO)-ANCA IgG activation of cells was investigated using functional assays (interleukin-8 and reactive oxygen species production) and targeted gene analysis with NanoString. Total and phosphorylated Syk at sites of tissue inflammation in patients with AAV was assessed using immunohistochemistry and RNAscope in situ hybridization. RESULTS We identified increased phosphorylated Syk at critical activatory tyrosine residues in blood neutrophils and monocytes from patients with active AAV compared to patients with disease in remission or healthy controls. Syk was phosphorylated in vitro following MPO-ANCA IgG stimulation, and Syk inhibition was able to prevent ANCA-mediated cellular responses. Using targeted gene expression analysis, we identified up-regulation of FcR- and Syk-dependent signaling pathways following MPO-ANCA IgG stimulation. Finally, we showed that Syk is expressed and phosphorylated in tissue leukocytes at sites of organ inflammation in AAV. CONCLUSION These findings indicate that Syk plays a critical role in MPO-ANCA IgG-induced myeloid cell responses and that Syk is activated in circulating immune cells and tissue immune cells in AAV; therefore, Syk inhibition may be a potential therapeutic option.
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Affiliation(s)
- Maria Prendecki
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, and Imperial College Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - Kavita Gulati
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, and Imperial College Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - Noelle Pisacano
- National Heart and Lung Institute, Imperial College, London, UK
| | - Damilola Pinheiro
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, London, UK
| | - Tejal Bhatt
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, London, UK
| | - Marie-Anne Mawhin
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, London, UK
| | - Frederic Toulza
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, London, UK
| | | | - Andrew Cowburn
- National Heart and Lung Institute, Imperial College, London, UK
| | | | - Frederick W K Tam
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, and Imperial College Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - Candice Roufosse
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, London, UK
| | - Charles D Pusey
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, and Imperial College Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - Stephen P McAdoo
- Department of Immunology and Inflammation, Centre for Inflammatory Disease, Imperial College London, Hammersmith Campus, and Imperial College Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
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8
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Tsai YF, Yang SC, Hsu YH, Chen CY, Chen PJ, Syu YT, Lin CH, Hwang TL. Carnosic acid inhibits reactive oxygen species-dependent neutrophil extracellular trap formation and ameliorates acute respiratory distress syndrome. Life Sci 2022; 321:121334. [PMID: 36587789 DOI: 10.1016/j.lfs.2022.121334] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/18/2022] [Accepted: 12/24/2022] [Indexed: 01/01/2023]
Abstract
AIMS Infiltration of activated neutrophils into the lungs is a hallmark of acute respiratory distress syndrome (ARDS). Neutrophilic inflammation, particularly neutrophil extracellular traps (NETs), is proposed as a useful target for treating ARDS. Carnosic acid (CA) is a food additive; however, its anti-neutrophilic activity in the treatment of ARDS has not been well established. The hypothesis of present study is to confirm that CA alleviates ARDS by suppressing neutrophilic inflammation and oxidative damage. MAIN METHODS Generation of superoxide anions and reactive oxygen species (ROS), induction of elastase degranulation, and formation of NETs by human neutrophils were assayed using spectrophotometry, flow cytometry, and immunofluorescent microscopy. Immunoblotting was performed to determine the cellular mechanisms involved. Cell-free radical systems were used to test antioxidant activities. The therapeutic effect of CA was evaluated in a lipopolysaccharide (LPS)-induced ARDS mouse model. KEY FINDINGS CA greatly reduced superoxide anion production, ROS production, elastase release, cluster of differentiation 11b expression, and cell adhesion in activated human neutrophils. Mechanistic studies have demonstrated that CA suppresses phosphorylation of extracellular regulated kinase and c-Jun N-terminal kinase in activated neutrophils. CA effectively scavenges reactive oxygen and nitrogen species, but not superoxide anions. This is consistent with the finding that CA is effective against ROS-dependent NET formation. CA treatment significantly improved pulmonary neutrophil infiltration, oxidative damage, NET formation, and alveolar damage in LPS-induced mice. SIGNIFICANCE Our data suggested the potential application of CA for neutrophil-associated ARDS therapy.
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Affiliation(s)
- Yung-Fong Tsai
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Shun-Chin Yang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan
| | - Yun-Hsuan Hsu
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chun-Yu Chen
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Po-Jen Chen
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Medical Research, E-Da Hospital, Kaohsiung 824, Taiwan
| | - Yu-Ting Syu
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Ching-Hsiung Lin
- Division of Chest Medicine, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung 402, Taiwan; Department of Recreation and Holistic Wellness, MingDao University, Changhua 523, Taiwan.
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan.
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9
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McLeish KR, Fernandes MJ. Understanding inhibitory receptor function in neutrophils through the lens of
CLEC12A. Immunol Rev 2022; 314:50-68. [PMID: 36424898 DOI: 10.1111/imr.13174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Neutrophils are the first leukocytes recruited from the circulation in response to invading pathogens or injured cells. To eradicate pathogens and contribute to tissue repair, recruited neutrophils generate and release a host of toxic chemicals that can also damage normal cells. To avoid collateral damage leading to tissue injury and organ dysfunction, molecular mechanisms evolved that tightly control neutrophil response threshold to activating signals, the strength and location of the response, and the timing of response termination. One mechanism of response control is interruption of activating intracellular signaling pathways by the 20 inhibitory receptors expressed by neutrophils. The two inhibitory C-type lectin receptors expressed by neutrophils, CLEC12A and DCIR, exhibit both common and distinct molecular and functional mechanisms, and they are associated with different diseases. In this review, we use studies on CLEC12A as a model of inhibitory receptor regulation of neutrophil function and participation in disease. Understanding the molecular mechanisms leading to inhibitory receptor specificity offers the possibility of using physiologic control of neutrophil functions as a pharmacologic tool to control inflammatory diseases.
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Affiliation(s)
- Kenneth R. McLeish
- Department of Medicine University of Louisville School of Medicine Louisville Kentucky USA
| | - Maria J. Fernandes
- Infectious and Immune Diseases Division CHU de Québec‐Laval University Research Center Québec Québec Canada
- Department of Microbiology‐Infectious Diseases and Immunology, Faculty of Medicine Laval University Québec Québec Canada
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10
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Behrens LM, van Egmond M, van den Berg TK. Neutrophils as immune effector cells in antibody therapy in cancer. Immunol Rev 2022; 314:280-301. [PMID: 36331258 DOI: 10.1111/imr.13159] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Tumor-targeting monoclonal antibodies are available for a number of cancer cell types (over)expressing the corresponding tumor antigens. Such antibodies can limit tumor progression by different mechanisms, including direct growth inhibition and immune-mediated mechanisms, in particular complement-dependent cytotoxicity, antibody-dependent cellular phagocytosis, and antibody-dependent cellular cytotoxicity (ADCC). ADCC can be mediated by various types of immune cells, including neutrophils, the most abundant leukocyte in circulation. Neutrophils express a number of Fc receptors, including Fcγ- and Fcα-receptors, and can therefore kill tumor cells opsonized with either IgG or IgA antibodies. In recent years, important insights have been obtained with respect to the mechanism(s) by which neutrophils engage and kill antibody-opsonized cancer cells and these findings are reviewed here. In addition, we consider a number of additional ways in which neutrophils may affect cancer progression, in particular by regulating adaptive anti-cancer immunity.
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Affiliation(s)
- Leonie M. Behrens
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC Vrije Universiteit Amsterdam HV Amsterdam The Netherlands
- Cancer Center Amsterdam, Cancer Biology and Immunology HV Amsterdam The Netherlands
- Amsterdam institute for Infection and Immunity, Cancer Immunology HV Amsterdam The Netherlands
| | - Marjolein van Egmond
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC Vrije Universiteit Amsterdam HV Amsterdam The Netherlands
- Cancer Center Amsterdam, Cancer Biology and Immunology HV Amsterdam The Netherlands
- Amsterdam institute for Infection and Immunity, Cancer Immunology HV Amsterdam The Netherlands
- Department of Surgery, Amsterdam UMC Vrije Universiteit Amsterdam HV Amsterdam The Netherlands
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11
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Zhu X, Liu B, Ruan Z, Chen M, Li C, Shi H, Huang X, Yu H, Zhou Y, Zhu H, Sun J, Wei Y, Xu W, Dong J. TMT-Based Quantitative Proteomic Analysis Reveals Downregulation of ITGAL and Syk by the Effects of Cycloastragenol in OVA-Induced Asthmatic Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6842530. [PMID: 36329800 PMCID: PMC9626231 DOI: 10.1155/2022/6842530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 08/28/2022] [Accepted: 09/29/2022] [Indexed: 12/08/2023]
Abstract
BACKGROUND Cycloastragenol (CAG) has been reported to alleviate airway inflammation in ovalbumin- (OVA-) induced asthmatic mice. However, its specific mechanisms remain unclear. OBJECTIVE This study is aimed at investigating the effects of CAG on asthma, comparing its efficacy with dexamethasone (DEX), and elucidating the mechanism of CAG's regulation. METHODS The asthma mouse model was induced by OVA. CAG at the optimal dose of 125 mg/kg was given every day from day 0 for 20-day prevention or from day 14 for a 7-day treatment. We observed the preventive and therapeutic effects of CAG in asthmatic mice by evaluating the airway inflammation, AHR, and mucus secretion. Lung proteins were used for TMT-based quantitative proteomic analysis to enunciate its regulatory mechanisms. RESULTS The early administration of 125 mg/kg CAG before asthma happened prevented asthmatic mice from AHR, airway inflammation, and mucus hypersecretion, returning to nearly the original baseline. Alternatively, the administration of CAG during asthma also had the same therapeutic effects as DEX. The proteomic analysis revealed that the therapeutical effects of CAG were associated with 248 differentially expressed proteins and 3 enriched KEGG pathways. We then focused on 3 differentially expressed proteins (ITGAL, Syk, and Vav1) and demonstrated that CAG treatment downregulated ITGAL, Syk, and Vav1 by quantitative real-time PCR, western blot analysis, and immunohistochemical staining. CONCLUSION These findings suggest that CAG exerts preventive and protective effects on asthma by inhibiting ITGAL, Syk, and the downstream target Vav1.
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Affiliation(s)
- Xueyi Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Baojun Liu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Zhenhui Ruan
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Mengmeng Chen
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Congcong Li
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Hanlin Shi
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Xi Huang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Hang Yu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yaolong Zhou
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Hehua Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Jing Sun
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Weifang Xu
- Shenzhen Hospital of Guangzhou University of Chinese Medicine (Futian), Shenzhen, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
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12
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Podgórska D, Cieśla M, Kolarz B. FCER1G Gene Hypomethylation in Patients with Rheumatoid Arthritis. J Clin Med 2022; 11:4664. [PMID: 36012903 PMCID: PMC9410058 DOI: 10.3390/jcm11164664] [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: 06/14/2022] [Revised: 07/29/2022] [Accepted: 08/05/2022] [Indexed: 11/21/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease that, when improperly treated, leads to disability in patients. Various factors that may cause the development and activity of RA are being considered. Epigenetic factors are also receiving increasing attention. In our study, we analyzed the association between FCER1G gene methylation and RA activity. We conducted our study in 50 RA patients and 24 controls. The patients were divided into two groups in terms of high disease activity and remission. Quantitative real-time methylation-specific PCR was used to analyze the methylation status of the investigated genes. We observed that RA patients have lower levels of methylation of the FCER1G gene compared to controls, but we did not find any difference in the methylation status of this gene between patients with high disease activity and remission. The results of this study suggest that FCER1G gene methylation may be a new potential epigenetic marker of RA that is independent of disease activity.
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Affiliation(s)
- Dominika Podgórska
- Department of Internal Diseases, Institute of Medical Sciences, College of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
| | - Marek Cieśla
- College of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
| | - Bogdan Kolarz
- Department of Internal Diseases, Institute of Medical Sciences, College of Medical Sciences, University of Rzeszow, 35-959 Rzeszow, Poland
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13
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Almengló C, Fu X, Flores-Arias MT, Fernández ÁL, Viñuela JE, Martínez-Cereijo JM, Durán D, Rodríguez-Mañero M, González-Juanatey JR, Eiras S. Synergism between obesity and HFpEF on neutrophils phenotype and its regulation by adipose tissue-molecules and SGLT2i dapagliflozin. J Cell Mol Med 2022; 26:4416-4427. [PMID: 35818731 PMCID: PMC9357605 DOI: 10.1111/jcmm.17466] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 05/30/2022] [Accepted: 06/15/2022] [Indexed: 11/27/2022] Open
Abstract
The adiposity invokes innate immune activity, coronary microvascular dysfunction and consequently heart failure preserved ejection fraction (HFpEF). Our aim was to study the neutrophils profile on obesity and cardiovascular disease and its regulation by adipose tissue-secretome and dapagliflozin. We have isolated neutrophils from patients undergoing open heart surgery (19 women and 51 men). Its migration activity was performed with culture-transwell, transcriptional studies of proteolytic enzymes, adhesion molecules or receptors were analysed by real-time PCR and proteomics (from 20 patients) analysis by TripleTOF mass spectrometer. Differentiated HL-60 (dHL-60) was used as a preclinical model on microfluidic for endothelial cells attaching assays and genes regulation with epicardial and subcutaneous fat secretomes from patients (3 women and 9 men) or dapagliflozin 1-10 μM treatments. The transcriptional and proteomics studies have determined higher levels of adhesion molecules in neutrophils from patients with obesity. The adhesion molecule CD11b levels were higher in those patients with the combined obesity and HFpEF factors (1.70 ± 0.06 a.u. without obesity, 1.72 ± 0.04 a.u. obesity or HFpEF without obesity and 1.79 ± 0.08 a.u. obesity and HFpEF; p < .01). While fat-secretome induces its upregulation, dapagliflozin can modulated it. Because CD11b upregulation is associated with higher neutrophils migration and adhesion into endothelial cells, dapagliflozin might modulate this mechanism on patients with obesity and HFpEF.
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Affiliation(s)
- Cristina Almengló
- Cardiology Group, Health Research Institute, Santiago de Compostela, Spain
| | - Xiaoran Fu
- Translational Cardiology Group, Health Research Institute, Santiago de Compostela, Spain
| | - María Teresa Flores-Arias
- Photonics4 Life Research Group, Applied Physics Department, Facultade de Física and Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Ángel L Fernández
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV Madrid, Madrid, Spain
| | - Juan E Viñuela
- Translational Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,Immunology Laboratory, Health Research Institute, Santiago de Compostela, Spain
| | - José M Martínez-Cereijo
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Darío Durán
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV Madrid, Madrid, Spain
| | - Moisés Rodríguez-Mañero
- Translational Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV Madrid, Madrid, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - José R González-Juanatey
- Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV Madrid, Madrid, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Sonia Eiras
- Translational Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV Madrid, Madrid, Spain
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14
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Huse C, Anstensrud AK, Michelsen AE, Ueland T, Broch K, Woxholt S, Yang K, Sharma K, Tøllefsen IM, Bendz B, Amundsen BH, Damås JK, Berg ES, Bjørkelund E, Quiles-Jiménez A, Bjerkeli V, Bendz C, Kleveland O, Stensaeth KH, Opdahl A, Kløw NE, Andersen GØ, Wiseth R, Halvorsen B, Gullestad L, Seljeflot I, Aukrust P, Osnes L, Dahl TB. Interleukin-6 inhibition in ST-elevation myocardial infarction: Immune cell profile in the randomised ASSAIL-MI trial. EBioMedicine 2022; 80:104013. [PMID: 35504178 PMCID: PMC9079006 DOI: 10.1016/j.ebiom.2022.104013] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 04/02/2022] [Accepted: 04/05/2022] [Indexed: 12/31/2022] Open
Abstract
Background We recently showed that interleukin (IL)-6 inhibition by tocilizumab improves myocardial salvage in ST-elevation myocardial infarction (STEMI). However, the mechanisms for this effect are not clear. Methods In this exploratory sub-study of the ASSAIL-MI trial, we examined leukocyte differential counts and their relation to myocardial salvage and peak troponin T (TnT) in STEMI patients randomised to tocilizumab (n = 101) or placebo (n = 98). We performed RNA-sequencing on whole blood (n = 40) and T cells (n = 20). B and T cell subpopulations were examined by flow cytometry (n = 69). Findings (i) STEMI patients had higher neutrophil counts at hospitalisation compared with stable angina patients. (ii) After percutaneous coronary intervention there was a gradual decline in neutrophils, which was significantly more pronounced in the tocilizumab group. (iii) The decrease in neutrophils in the tocilizumab group was associated with improved myocardial salvage and lower peak TnT. (iv) RNA-sequencing suggested that neutrophil function was also attenuated by tocilizumab. (v) B and T cell sub-populations changed only minimally after STEMI with minor effects of tocilizumab, supported as well by RNA-sequencing analyses of T cells. (vi) However, a low CD8+ count was associated with improved myocardial salvage in patients admitted to the hospital > 3 h after symptom onset. Interpretation Tocilizumab induced a rapid reduction in neutrophils and seemed to attenuate neutrophil function in STEMI patients potentially related to the beneficial effects of tocilizumab on myocardial salvage. Funding South-Eastern Norway Regional Health Authority (Nos. 2019067, 2017084), the Central Norway Regional Health Authority and Norwegian Research Council (No. 283867).
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Affiliation(s)
- Camilla Huse
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Anne Kristine Anstensrud
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Annika E Michelsen
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Thor Ueland
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; K. G. Jebsen Thrombosis Research and Expertise Centre (TREC), The Arctic University of Norway, Tromsø, Norway
| | - Kaspar Broch
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; K. G. Jebsen Cardiac Research Centre and Centre for Heart Failure Research, University of Oslo, Oslo, Norway
| | - Sindre Woxholt
- Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Kuan Yang
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Kapil Sharma
- Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway
| | | | - Bjørn Bendz
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Brage Høyem Amundsen
- Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Jan Kristian Damås
- Department of Infectious Disease, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Centre of Molecular Inflammation Research, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Erlend Sturle Berg
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | | | - Ana Quiles-Jiménez
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Vigdis Bjerkeli
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Christina Bendz
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Ola Kleveland
- Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Knut Haakon Stensaeth
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Radiology and Nuclear Medicine, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Anders Opdahl
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Nils-Einar Kløw
- Department of Radiology, Oslo University Hospital Ullevål, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Geir Øystein Andersen
- Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway; Department of Cardiology, Center for Clinical Heart Research, Oslo University Hospital Ullevål, Oslo, Norway
| | - Rune Wiseth
- Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Bente Halvorsen
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Lars Gullestad
- Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; K. G. Jebsen Cardiac Research Centre and Centre for Heart Failure Research, University of Oslo, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Ingebjørg Seljeflot
- Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Cardiology, Center for Clinical Heart Research, Oslo University Hospital Ullevål, Oslo, Norway
| | - Pål Aukrust
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Rheumatology, Dermatology and Infectious Disease, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Liv Osnes
- Department of Immunology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Tuva B Dahl
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital, Norway.
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15
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Prolyl-Isomerase Pin1 Controls Key fMLP-Induced Neutrophil Functions. Biomedicines 2021; 9:biomedicines9091130. [PMID: 34572316 PMCID: PMC8472638 DOI: 10.3390/biomedicines9091130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/19/2021] [Accepted: 08/27/2021] [Indexed: 02/07/2023] Open
Abstract
Neutrophils are key cells of the innate immune and inflammatory responses. They are the first blood cells to migrate to the infection site where they release high amounts of reactive oxygen species (ROS) and several peptides and enzymes required for microbial killing. However, excessive neutrophil activation can induce tissue injury participating in inflammation, thus the characterization of the enzymes involved in neutrophil activation could help to identify new pharmacological targets to treat inflammation. The prolyl-isomerase Pin1 is a ubiquitous enzyme involved in several functions, however, its role in neutrophil functions is less known. In this study, we show that the bacterial peptide N-formyl-methionyl-leucyl-phenylalanine (fMLP or fMLF), a G-protein coupled receptor (GPCR) agonist-induced Pin1 activation in human neutrophils. PiB and juglone, two Pin1 inhibitors inhibited Pin1 activity in neutrophils and consequently inhibited fMLP-induced chemotaxis and -degranulation of azurophil and specific granules as measured by myeloperoxidase and neutrophil gelatinase-associated lipocalin (NGAL) release respectively. We also showed that PiB inhibited TNFα + fMLP-induced superoxide production, confirming the effect of juglone. These data show that inhibitors of Pin1 impaired key pro-inflammatory neutrophil functions elicited by GPCR activation and suggest that Pin1 could control neutrophil inflammatory functions.
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16
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Kralova J, Pavliuchenko N, Fabisik M, Ilievova K, Spoutil F, Prochazka J, Pokorna J, Sedlacek R, Brdicka T. The receptor-type protein tyrosine phosphatase CD45 promotes onset and severity of IL-1β-mediated autoinflammatory osteomyelitis. J Biol Chem 2021; 297:101131. [PMID: 34461100 PMCID: PMC8455366 DOI: 10.1016/j.jbc.2021.101131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 08/20/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022] Open
Abstract
A number of human autoinflammatory diseases manifest with severe inflammatory bone destruction. Mouse models of these diseases represent valuable tools that help us to understand molecular mechanisms triggering this bone autoinflammation. The Pstpip2cmo mouse strain is among the best characterized of these; it harbors a mutation resulting in the loss of adaptor protein PSTPIP2 and development of autoinflammatory osteomyelitis. In Pstpip2cmo mice, overproduction of interleukin-1β (IL-1β) and reactive oxygen species by neutrophil granulocytes leads to spontaneous inflammation of the bones and surrounding soft tissues. However, the upstream signaling events leading to this overproduction are poorly characterized. Here, we show that Pstpip2cmo mice deficient in major regulator of Src-family kinases (SFKs) receptor-type protein tyrosine phosphatase CD45 display delayed onset and lower severity of the disease, while the development of autoinflammation is not affected by deficiencies in Toll-like receptor signaling. Our data also show deregulation of pro-IL-1β production by Pstpip2cmo neutrophils that are attenuated by CD45 deficiency. These data suggest a role for SFKs in autoinflammation. Together with previously published work on the involvement of protein tyrosine kinase spleen tyrosine kinase, they point to the role of receptors containing immunoreceptor tyrosine-based activation motifs, which after phosphorylation by SFKs recruit spleen tyrosine kinase for further signal propagation. We propose that this class of receptors triggers the events resulting in increased pro-IL-1β synthesis and disease initiation and/or progression.
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Affiliation(s)
- Jarmila Kralova
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Nataliia Pavliuchenko
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic; Charles University, Faculty of Science, Prague, Czech Republic
| | - Matej Fabisik
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic; Charles University, Faculty of Science, Prague, Czech Republic
| | - Kristyna Ilievova
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - Jan Prochazka
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic; Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - Jana Pokorna
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic; Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - Tomas Brdicka
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic.
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17
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Gamage S, Hali M, Kowluru A. CARD9 mediates glucose-stimulated insulin secretion in pancreatic beta cells. Biochem Pharmacol 2021; 192:114670. [PMID: 34233162 DOI: 10.1016/j.bcp.2021.114670] [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: 04/26/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 11/15/2022]
Abstract
Caspase recruitment domain containing protein 9 (CARD9) plays key regulatory role(s) in innate and adaptive immune responses. Recent evidence implicates CARD9 in the onset of metabolic diseases including insulin resistance. However, potential contributory roles of CARD9 in glucose-stimulated insulin secretion (GSIS) remain unknown. Herein, we report that CARD9 is expressed in human islets, rat islets, mouse islets and clonal INS-1 832/13 cells. Subcellularly, CARD9 is predominantly cytosolic (~75%) in INS-1 832/13 cells. siRNA-mediated depletion of CARD9 expression significantly (~50%) suppressed GSIS in INS-1 832/13 cells. Interestingly, glucose-induced activation of Rac1, a small G-protein, which is a requisite for GSIS to occur, is unaffected in CARD9-si transfected cells, suggesting that CARD9-mediates GSIS in a Rac1-independent fashion. Furthermore, insulin secretion promoted by KCl or mastoparan (a global G protein activator), remained resistant to CARD9 depletion in INS-1 832/13 cells. In addition, pharmacological inhibition (BRD5529) of interaction between CARD9 and TRIM62, its ubiquitin ligase, exerted no significant effects on GSIS. Lastly, depletion of CARD9 prevented glucose-induced p38, not ERK1/2 phosphorylation in beta cells. Based on these observations, we propose that CARD9 might regulate GSIS via a Rac1-independent and p38-dependent signaling module.
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Affiliation(s)
- Suhadinie Gamage
- Biomedical Research Service, John D. Dingell VA Medical Center, and Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, United States
| | - Mirabela Hali
- Biomedical Research Service, John D. Dingell VA Medical Center, and Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, United States
| | - Anjaneyulu Kowluru
- Biomedical Research Service, John D. Dingell VA Medical Center, and Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, United States.
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18
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Kao TI, Chen PJ, Wang YH, Tseng HH, Chang SH, Wu TS, Yang SH, Lee YT, Hwang TL. Bletinib ameliorates neutrophilic inflammation and lung injury by inhibiting Src family kinase phosphorylation and activity. Br J Pharmacol 2021; 178:4069-4084. [PMID: 34131920 PMCID: PMC8518616 DOI: 10.1111/bph.15597] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 03/07/2021] [Accepted: 04/29/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND AND PURPOSE Neutrophil overactivation is crucial in the pathogenesis of acute lung injury (ALI). Bletinib (3,3'-dihydroxy-2',6'-bis(p-hydroxybenzyl)-5-methoxybibenzyl), a natural bibenzyl, extracted from the Bletilla plant, exhibits anti-inflammatory, antibacterial, and antimitotic effects. In this study, we evaluated the therapeutic effects of bletinib in human neutrophilic inflammation and LPS-mediated ALI in mice. EXPERIMENTAL APPROACH In human neutrophils activated with the formyl peptide (fMLP), we assessed integrin expression, superoxide anion production, degranulation, neutrophil extracellular trap (NET) formation, and adhesion through flow cytometry, spectrophotometry, and immunofluorescence microscopy. Immunoblotting was used to measure phosphorylation of Src family kinases (SFKs) and downstream proteins. Finally, a LPS-induced ALI model in male BALB/c mice was used to investigate the potential therapeutic effects of bletinib treatment. KEY RESULTS In activated human neutrophils, bletinib reduced degranulation, respiratory burst, NET formation, adhesion, migration, and integrin expression; suppressed the enzymic activity of SFKs, including Src, Lyn, Fgr, and Hck; and inhibited the phosphorylation of SFKs as well as Vav and Bruton's tyrosine kinase (Btk). In mice with ALI, the pulmonary sections demonstrated considerable amelioration of prominent inflammatory changes, such as haemorrhage, pulmonary oedema, and neutrophil infiltration, after bletinib treatment. CONCLUSION AND IMPLICATIONS Bletinib regulates neutrophilic inflammation by inhibiting the SFK-Btk-Vav pathway. Bletinib ameliorates LPS-induced ALI in mice. Further biochemical optimisation of bletinib may be a promising strategy for the development of novel therapeutic agents for inflammatory diseases.
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Affiliation(s)
- Ting-I Kao
- Graduate Institute of Biomedical Sciences and Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Chinese Internal Medicine, Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Po-Jen Chen
- Department of Cosmetic Science, Providence University, Taichung, Taiwan
| | - Yi-Hsuan Wang
- Graduate Institute of Biomedical Sciences and Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-Hui Tseng
- Graduate Institute of Biomedical Sciences and Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Biomedical Sciences and Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Research Center for Chinese Herbal Medicine and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Tian-Shung Wu
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan
| | - Sien-Hung Yang
- Division of Chinese Internal Medicine, Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Research Center for Chinese Herbal Medicine and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Yen-Tung Lee
- Graduate Institute of Biomedical Sciences and Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Cosmetic Science, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan.,Department of Chinese Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Biomedical Sciences and Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Research Center for Chinese Herbal Medicine and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
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19
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Brian BF, Guerrero CR, Freedman TS. Immunopharmacology and Quantitative Analysis of Tyrosine Kinase Signaling. ACTA ACUST UNITED AC 2021; 130:e104. [PMID: 32931655 PMCID: PMC7583487 DOI: 10.1002/cpim.104] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this article we describe the use of pharmacological and genetic tools coupled with immunoblotting (Western blotting) and targeted mass spectrometry to quantify immune signaling and cell activation mediated by tyrosine kinases. Transfer of the ATP γ phosphate to a protein tyrosine residue activates signaling cascades regulating the differentiation, survival, and effector functions of all cells, with unique roles in immune antigen receptor, polarization, and other signaling pathways. Defining the substrates and scaffolding interactions of tyrosine kinases is critical for revealing and therapeutically manipulating mechanisms of immune regulation. Quantitative analysis of the amplitude and kinetics of these effects is becoming ever more accessible experimentally and increasingly important for predicting complex downstream effects of therapeutics and for building computational models. Secondarily, quantitative analysis is increasingly expected by reviewers and journal editors, and statistical analysis of biological replicates can bolster claims of experimental rigor and reproducibility. Here we outline methods for perturbing tyrosine kinase activity in cells and quantifying protein phosphorylation in lysates and immunoprecipitates. The immunoblotting techniques are a guide to probing the dynamics of protein abundance, protein–protein interactions, and changes in post‐translational modification. Immunoprecipitated protein complexes can also be subjected to targeted mass spectrometry to probe novel sites of modification and multiply modified or understudied proteins that cannot be resolved by immunoblotting. Together, these protocols form a framework for identifying the unique contributions of tyrosine kinases to cell activation and elucidating the mechanisms governing immune cell regulation in health and disease. © 2020 The Authors. Basic Protocol 1: Quantifying protein phosphorylation via immunoblotting and near‐infrared imaging Alternate Protocol: Visualizing immunoblots using chemiluminescence Basic Protocol 2: Enriching target proteins and isolation of protein complexes by immunoprecipitation Support Protocol: Covalent conjugation of antibodies to functionalized beads Basic Protocol 3: Quantifying proteins and post‐translational modifications by targeted mass spectrometry
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Affiliation(s)
- Ben F Brian
- Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota
| | - Candace R Guerrero
- College of Biological Sciences Center for Mass Spectrometry and Proteomics, University of Minnesota, Minneapolis, Minnesota
| | - Tanya S Freedman
- Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota.,Center for Immunology, Masonic Cancer Center, Center for Autoimmune Diseases Research, University of Minnesota, Minneapolis, Minnesota
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20
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Futosi K, Kása O, Szilveszter KP, Mócsai A. Neutrophil Phospholipase Cγ2 Drives Autoantibody-Induced Arthritis Through the Generation of the Inflammatory Microenvironment. Arthritis Rheumatol 2021; 73:1614-1625. [PMID: 33645887 DOI: 10.1002/art.41704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 02/19/2021] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Gain-of-function mutations and genome-wide association studies have linked phospholipase Cγ2 (PLCγ2) to various inflammatory diseases, including arthritis in humans and mice. PLCγ2-deficient (Plcg2-/- ) mice are also protected against experimental arthritis. This study was undertaken to test how PLCγ2 triggers autoantibody-induced arthritis in mice. METHODS PLCγ2 was deleted from various mouse cellular lineages. Deletion efficacy and specificity were tested by immunoblotting and intracellular flow cytometry. Autoantibody-induced arthritis was triggered by K/BxN serum transfer. The role of neutrophil PLCγ2 was further investigated by analysis of the inflammatory exudate, competitive in vivo migration assays, and in vitro functional studies. RESULTS PLCγ2 deficiency in the entire hematopoietic compartment completely blocked autoantibody-induced arthritis. Arthritis development was abrogated by deletion of PLCγ2 from myeloid cells or neutrophils but not from mast cells or platelets. Neutrophil infiltration was reduced in neutrophil-specific PLCγ2-deficient (Plcg2Δ PMN ) mice. However, this was not due to an intrinsic migration defect since Plcg2Δ PMN neutrophils accumulated normally when wild-type cells were also present in mixed bone marrow chimeras. Instead, the Plcg2Δ PMN mutation blocked the accumulation of interleukin-1β, macrophage inflammatory protein 2 (MIP-2), and leukotriene B4 (LTB4 ) in synovial tissues and reduced the secondary infiltration of macrophages. These findings were supported by in vitro studies showing normal chemotactic migration but defective immune complex-induced respiratory burst and MIP-2 or LTB4 release in PLCγ2-deficient neutrophils. CONCLUSION Neutrophil PLCγ2 is critical for arthritis development, supposedly through the generation of the inflammatory microenvironment. PLCγ2-expressing neutrophils exert complex indirect effects on other inflammatory cells. PLCγ2-targeted therapies may provide particular benefit in inflammatory diseases with a major neutrophil component.
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Affiliation(s)
| | - Orsolya Kása
- Semmelweis University School of Medicine, Budapest, Hungary
| | | | - Attila Mócsai
- Semmelweis University School of Medicine, Budapest, Hungary
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21
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Bouti P, Zhao XW, Verkuijlen PJJH, Tool ATJ, van Houdt M, Köker N, Köker MY, Keskin O, Akbayram S, van Bruggen R, Kuijpers TW, Matlung HL, van den Berg TK. Kindlin3-Dependent CD11b/CD18-Integrin Activation Is Required for Potentiation of Neutrophil Cytotoxicity by CD47-SIRPα Checkpoint Disruption. Cancer Immunol Res 2020; 9:147-155. [PMID: 33355195 DOI: 10.1158/2326-6066.cir-20-0491] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 10/07/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022]
Abstract
The CD47-signal regulatory protein-alpha (SIRPα) immune checkpoint constitutes a therapeutic target in cancer, and initial clinical studies using inhibitors of CD47-SIRPα interactions in combination with tumor-targeting antibodies show promising results. Blockade of CD47-SIRPα interaction can promote neutrophil antibody-dependent cellular cytotoxicity (ADCC) toward antibody-opsonized targets. Neutrophils induce killing of antibody-opsonized tumor cells by a process identified as trogoptosis, a necrotic/lytic type of cancer cell death that involves trogocytosis, the antibody-mediated endocytic acquisition of cancer membrane fragments by neutrophils. Both trogocytosis and killing strictly depend on CD11b/CD18-(Mac-1)-mediated neutrophil-cancer cell conjugate formation, but the mechanism by which CD47-SIRPα checkpoint disruption promotes cytotoxicity has remained elusive. Here, by using neutrophils from patients with leukocyte adhesion deficiency type III carrying FERMT3 gene mutations, hence lacking the integrin-associated protein kindlin3, we demonstrated that CD47-SIRPα signaling controlled the inside-out activation of the neutrophil CD11b/CD18-integrin and cytotoxic synapse formation in a kindlin3-dependent fashion. Our findings also revealed a role for kindlin3 in trogocytosis and an absolute requirement in the killing process, which involved direct interactions between kindlin3 and CD18 integrin. Collectively, these results identified a dual role for kindlin3 in neutrophil ADCC and provide mechanistic insights into the way neutrophil cytotoxicity is governed by CD47-SIRPα interactions.
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Affiliation(s)
- Panagiota Bouti
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands.
| | - Xi Wen Zhao
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Paul J J H Verkuijlen
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Anton T J Tool
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Michel van Houdt
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Nezihe Köker
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Department of Immunology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Mustafa Yavuz Köker
- Department of Immunology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Ozlem Keskin
- Pediatric Allergy and Immunology, Gaziantep University, Gaziantep, Turkey
| | - Sinan Akbayram
- Department of Pediatric Hematology-Oncology, Gaziantep University Medical Faculty, Gaziantep, Turkey
| | - Robin van Bruggen
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Taco W Kuijpers
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Emma Children's Hospital, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Hanke L Matlung
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Timo K van den Berg
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands. .,Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Vrije University, Amsterdam, the Netherlands
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22
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Tabata H, Morita H, Kaji H, Tohyama K, Tohyama Y. Syk facilitates phagosome-lysosome fusion by regulating actin-remodeling in complement-mediated phagocytosis. Sci Rep 2020; 10:22086. [PMID: 33328565 PMCID: PMC7744523 DOI: 10.1038/s41598-020-79156-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 12/03/2020] [Indexed: 11/09/2022] Open
Abstract
Effective phagocytosis is crucial for host defense against pathogens. Macrophages entrap pathogens into a phagosome and subsequently acidic lysosomes fuse to the phagosome. Previous studies showed the pivotal role of actin-remodeling mediated by phosphoinositide-related signaling in phagosome formation, but the mechanisms of phagosome-lysosome fusion remain unexplored. Here we show that in complement-mediated phagocytosis, phagosome-lysosome fusion requires the disappearance of F-actin structure surrounding the phagosome and a tyrosine kinase Syk plays a key role in this process. Using macrophage-like differentiated HL60 and Syk-knockout (Syk-KO) HL60 cells, we found that Syk-KO cells showed insufficient phagosome acidification caused by impaired fusion with lysosomes and permitted the survival of Candida albicans in complement-mediated phagocytosis. Phagosome tracking analysis showed that during phagosome internalization process, F-actin surrounding phagosomes disappeared in both parental and Syk-KO cells but this structure was reconstructed immediately only in Syk-KO cells. In addition, F-actin-stabilizing agent induced a similar impairment of phagosome-lysosome fusion. Collectively, Syk-derived signaling facilitates phagosome-lysosome fusion by regulating actin-remodeling.
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Affiliation(s)
- Hiroyuki Tabata
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kami-ohno, Himeji, Hyogo, 670-8524, Japan
| | - Hiroyuki Morita
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kami-ohno, Himeji, Hyogo, 670-8524, Japan
| | - Hiroaki Kaji
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kami-ohno, Himeji, Hyogo, 670-8524, Japan
| | - Kaoru Tohyama
- Department of Laboratory Medicine, Kawasaki Medical School, Okayama, 701-0192, Japan
| | - Yumi Tohyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kami-ohno, Himeji, Hyogo, 670-8524, Japan.
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23
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Canino J, Guidetti GF, Galgano L, Vismara M, Minetti G, Torti M, Canobbio I. The proline-rich tyrosine kinase Pyk2 modulates integrin-mediated neutrophil adhesion and reactive oxygen species generation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118799. [PMID: 32693110 DOI: 10.1016/j.bbamcr.2020.118799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 07/03/2020] [Accepted: 07/14/2020] [Indexed: 01/05/2023]
Abstract
Neutrophils are first responders in infection and inflammation. They are able to roll, adhere and transmigrate through the endothelium to reach the site of infection, where they fight pathogens through secretion of granule contents, production of reactive oxygen species, extrusion of neutrophil extracellular traps, and phagocytosis. In this study we explored the role of the non-receptor focal adhesion kinase Pyk2 in neutrophil adhesion and activation. Using a specific Pyk2 pharmacological inhibitor, PF-4594755, as well as Pyk2-deficient murine neutrophils, we found that Pyk2 is activated upon integrin αMβ2-mediated neutrophil adhesion to fibrinogen. This process is triggered by Src family kinases-mediated phosphorylation and supported by Pyk2 autophosphorylation on Y402. In neutrophil adherent to fibrinogen, Pyk2 activates PI3K-dependent pathways promoting the phosphorylation of Akt and of its downstream effector GSK3. Pyk2 also dynamically regulates MAP kinases in fibrinogen-adherent neutrophils, as it stimulates p38MAPK but negatively regulates ERK1/2. Pharmacological inhibition of Pyk2 significantly prevented adhesion of human neutrophils to fibrinogen, and neutrophils from Pyk2-knockout mice showed a reduced ability to adhere compared to wildtype cells. Accordingly, neutrophil adhesion to fibrinogen was reduced upon inhibition of p38MAPK but potentiated by ERK1/2 inhibition. Neutrophil adherent to fibrinogen, but not to polylysine, were able to produce ROS upon lipopolysaccharide challenge and ROS production was completely suppressed upon inhibition of Pyk2. By contrast PMA-induced ROS production by neutrophil adherent to either fibrinogen or polylysine was independent from Pyk2. Altogether these results demonstrate that Pyk2 is an important effector in the coordinated puzzle regulating neutrophil adhesion and activation.
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Affiliation(s)
- Jessica Canino
- Department of Biology and Biotechnology, University of Pavia, Italy; Scuola Universitaria Superiore, IUSS, Pavia, Italy
| | | | - Luca Galgano
- Department of Biology and Biotechnology, University of Pavia, Italy; Scuola Universitaria Superiore, IUSS, Pavia, Italy
| | - Mauro Vismara
- Department of Biology and Biotechnology, University of Pavia, Italy
| | | | - Mauro Torti
- Department of Biology and Biotechnology, University of Pavia, Italy
| | - Ilaria Canobbio
- Department of Biology and Biotechnology, University of Pavia, Italy.
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24
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Uribe-Querol E, Rosales C. Phagocytosis: Our Current Understanding of a Universal Biological Process. Front Immunol 2020; 11:1066. [PMID: 32582172 PMCID: PMC7280488 DOI: 10.3389/fimmu.2020.01066] [Citation(s) in RCA: 278] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 05/04/2020] [Indexed: 12/22/2022] Open
Abstract
Phagocytosis is a cellular process for ingesting and eliminating particles larger than 0.5 μm in diameter, including microorganisms, foreign substances, and apoptotic cells. Phagocytosis is found in many types of cells and it is, in consequence an essential process for tissue homeostasis. However, only specialized cells termed professional phagocytes accomplish phagocytosis with high efficiency. Macrophages, neutrophils, monocytes, dendritic cells, and osteoclasts are among these dedicated cells. These professional phagocytes express several phagocytic receptors that activate signaling pathways resulting in phagocytosis. The process of phagocytosis involves several phases: i) detection of the particle to be ingested, ii) activation of the internalization process, iii) formation of a specialized vacuole called phagosome, and iv) maturation of the phagosome to transform it into a phagolysosome. In this review, we present a general view of our current understanding on cells, phagocytic receptors and phases involved in phagocytosis.
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Affiliation(s)
- Eileen Uribe-Querol
- División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Rosales
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
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25
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Yin Y, Frank D, Zhou W, Kaur N, French JB, Carpino N. An unexpected 2-histidine phosphoesterase activity of suppressor of T-cell receptor signaling protein 1 contributes to the suppression of cell signaling. J Biol Chem 2020; 295:8514-8523. [PMID: 32371395 DOI: 10.1074/jbc.ra120.013482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/30/2020] [Indexed: 11/06/2022] Open
Abstract
The suppressor of T-cell receptor (TCR) signaling (Sts) proteins Sts-1 and Sts-2 suppress receptor-mediated signaling pathways in various immune cells, including the TCR pathway in T cells and the Dectin-1 signaling pathway in phagocytes. As multidomain enzymes, they contain an N-terminal ubiquitin-association domain, a central Src homology 3 domain, and a C-terminal histidine phosphatase domain. Recently, a 2-histidine (2H) phosphoesterase motif was identified within the N-terminal portion of Sts. The 2H phosphoesterase motif defines an evolutionarily ancient protein domain present in several enzymes that hydrolyze cyclic phosphate bonds on different substrates, including cyclic nucleotides. It is characterized by two invariant histidine residues that play a critical role in catalytic activity. Consistent with its assignment as a phosphoesterase, we demonstrate here that the Sts-1 2H phosphoesterase domain displays catalytic, saturable phosphodiesterase activity toward the dinucleotide 2',3'-cyclic NADP. The enzyme exhibited a high degree of substrate specificity and selectively generated the 3'-nucleotide as the sole product. Sts-1 also had phosphodiesterase catalytic activity toward a 5-mer RNA oligonucleotide containing a 2',3'-cyclic phosphate group at its 3' terminus. To investigate the functional significance of Sts-1 2H phosphoesterase activity, we generated His-to-Ala variants and examined their ability to negatively regulate cellular signaling pathways. Substitution of either conserved histidine compromised the ability of Sts-1 to suppress signaling pathways downstream of both the TCR and the Dectin-1 receptor. Our results identify a heretofore unknown cellular enzyme activity associated with Sts-1 and indicate that this catalytic activity is linked to specific cell-signaling outcomes.
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Affiliation(s)
- Yue Yin
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
| | - David Frank
- Department of Microbiology and Immunology, Stony Brook University Medical Center, Stony Brook, New York, USA
| | - Weijie Zhou
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
| | - Neena Kaur
- Department of Microbiology and Immunology, Stony Brook University Medical Center, Stony Brook, New York, USA
| | - Jarrod B French
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA .,Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Nick Carpino
- Department of Microbiology and Immunology, Stony Brook University Medical Center, Stony Brook, New York, USA
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26
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Sernicola A, Russo I, Alaibac M. Small-molecule-based immunotherapy for immunologically mediated skin conditions. Immunotherapy 2020; 12:417-429. [PMID: 32308089 DOI: 10.2217/imt-2019-0190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A better understanding of the molecular pathogenesis of cutaneous immune disorders, together with advances in pharmaceutical drug development, led to the introduction of small-molecule inhibitors in the therapeutic management of a large spectrum of skin immune conditions. Small molecules are agents with a low molecular weight that are capable of affecting proinflammatory pathways through modulation of intracellular targets. These agents promise to improve the therapeutic management of many skin immune disorders due to their easy administration, high bioavailability and favorable safety profile. Here, we review the major small-molecule inhibitors targeting receptor-associated kinases, second messengers and transcription factors in development for the treatment of cutaneous immune conditions.
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Affiliation(s)
- Alvise Sernicola
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128 Padova, Italy
| | - Irene Russo
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128 Padova, Italy
| | - Mauro Alaibac
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128 Padova, Italy
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27
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Context-Dependent Role of Vinculin in Neutrophil Adhesion, Motility and Trafficking. Sci Rep 2020; 10:2142. [PMID: 32034208 PMCID: PMC7005776 DOI: 10.1038/s41598-020-58882-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/22/2020] [Indexed: 11/22/2022] Open
Abstract
Neutrophils are innate immune effector cells that traffic from the circulation to extravascular sites of inflammation. β2 integrins are important mediators of the processes involved in neutrophil recruitment. Although neutrophils express the cytoskeletal protein vinculin, they do not form mature focal adhesions. Here, we characterize the role of vinculin in β2 integrin-dependent neutrophil adhesion, migration, mechanosensing, and recruitment. We observe that knockout of vinculin attenuates, but does not completely abrogate, neutrophil adhesion, spreading, and crawling under static conditions. However, we also found that vinculin deficiency does not affect these behaviors in the presence of forces from fluid flow. In addition, we identify a role for vinculin in mechanosensing, as vinculin-deficient neutrophils exhibit attenuated spreading on stiff, but not soft, substrates. Consistent with these findings, we observe that in vivo neutrophil recruitment into the inflamed peritoneum of mice remains intact in the absence of vinculin. Together, these data suggest that while vinculin regulates some aspects of neutrophil adhesion and spreading, it may be dispensable for β2 integrin-dependent neutrophil recruitment in vivo.
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28
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Németh T, Sperandio M, Mócsai A. Neutrophils as emerging therapeutic targets. Nat Rev Drug Discov 2020; 19:253-275. [DOI: 10.1038/s41573-019-0054-z] [Citation(s) in RCA: 243] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2019] [Indexed: 12/13/2022]
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29
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Chiang CC, Cheng WJ, Lin CY, Lai KH, Ju SC, Lee C, Yang SH, Hwang TL. Kan-Lu-Hsiao-Tu-Tan, a traditional Chinese medicine formula, inhibits human neutrophil activation and ameliorates imiquimod-induced psoriasis-like skin inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2020; 246:112246. [PMID: 31539577 DOI: 10.1016/j.jep.2019.112246] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 09/05/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kan-Lu-Hsiao-Tu-Tan (KLHTT) is a popular traditional Chinese medicine for treating various inflammatory diseases. AIM OF THE STUDY The aim of the present study was to investigate the anti-inflammatory effects of KLHTT on human neutrophils and its therapeutic potential in treating imiquimod (IMQ)-induced psoriasis-like skin inflammation. MATERIALS AND METHODS Spectrophotometry, flow cytometry, and microscopy with immunohistochemical staining were used to evaluate superoxide anion generation, elastase release, CD11b expression, adhesion, and neutrophil extracellular trap (NET) formation in activated human neutrophils. Reactive oxygen species (ROS) and reactive nitrogen species in cell-free systems were measured using a multi-well fluorometer or a spectrophotometer. A psoriasis-like skin inflammation was induced in mice using the IMQ cream. RESULTS KLHTT suppressed superoxide anion generation, ROS production, CD11b expression, and adhesion in activated human neutrophils. In contrast, KLHTT failed to alter elastase release in activated human neutrophils. Additionally, KLHTT had an ROS-scavenging effect in the AAPH assay, but it did not scavenge superoxide anions directly in the xanthine/xanthine oxidase assay. Protein kinase C (PKC)-induced NET formation most commonly occurs through ROS-dependent mechanisms. KLHTT significantly inhibited phorbol 12-myristate 13-acetate, a PKC activator, inducing NET formation. Furthermore, topical KLHTT treatment reduced the area affected by psoriasis area and severity index (PASI) score and ameliorated neutrophil infiltration in IMQ-induced psoriasis-like skin inflammation in mice. CONCLUSIONS Our data show that KLHTT has anti-neutrophilic inflammatory effects in inhibiting ROS generation and cell adhesion. KLHTT also mitigated NET formation, mainly via an ROS-dependent pathway. In addition, KLHTT reduced neutrophil infiltration and improved the severity of IMQ-induced psoriasis-like skin inflammation in mice. Therefore, KLHTT may prove to be a safe and effective psoriasis therapy in the future.
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Affiliation(s)
- Chih-Chao Chiang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Supervisory Board, Taoyuan Chinese Medicine Association, Taoyuan, 338, Taiwan; Puxin Fengze Chinese Medicine Clinic, Taoyuan, 326, Taiwan.
| | - Wei-Jen Cheng
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan; School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
| | - Cheng-Yu Lin
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
| | - Kuei-Hung Lai
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan, 333, Taiwan.
| | - Seanson-Chance Ju
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
| | - Chuan Lee
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
| | - Sien-Hung Yang
- Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan; School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan, 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 243, Taiwan.
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30
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Kelm M, Lehoux S, Azcutia V, Cummings RD, Nusrat A, Parkos CA, Brazil JC. Regulation of neutrophil function by selective targeting of glycan epitopes expressed on the integrin CD11b/CD18. FASEB J 2019; 34:2326-2343. [PMID: 31907993 DOI: 10.1096/fj.201902542r] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 12/30/2022]
Abstract
Polymorphonuclear neutrophils (PMNs) play a critical role in the innate immune response to invading pathogens. However, dysregulated mucosal trafficking of PMNs and associated epithelial tissue damage is a pathological hallmark of numerous inflammatory conditions including inflammatory bowel disease. The glycoprotein CD11b/CD18 plays a well-described role in regulating PMN transepithelial migration and PMN inflammatory functions. Previous studies have demonstrated that targeting of the N-linked glycan Lewis X on CD11b blocks PMN transepithelial migration (TEpM). Given evidence of glycosylation-dependent regulation of CD11b/CD18 function, we performed MALDI TOF Mass Spectrometry (MS) analyses on CD11b/CD18 purified from human PMNs. Unusual glycan epitopes identified on CD11b/CD18 included high Mannose oligosaccharides recognized by the Galanthus Nivalis lectin and biantennary galactosylated N-glycans recognized by the Phaseolus Vulgaris erythroagglutinin lectin. Importantly, we show that selective targeting of glycans on CD11b with such lectins results in altered intracellular signaling events that inhibit TEpM and differentially affect key PMN inflammatory functions including phagocytosis, superoxide release and apoptosis. Taken together, these data demonstrate that discrete glycan motifs expressed on CD11b/CD18 such as biantennary galactose could represent novel targets for selective manipulation of CD11b function and reduction of PMN-associated tissue damage in chronic inflammatory diseases.
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Affiliation(s)
- Matthias Kelm
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Veronica Azcutia
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - Charles A Parkos
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
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31
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Rohwedder I, Kurz ARM, Pruenster M, Immler R, Pick R, Eggersmann T, Klapproth S, Johnson JL, Alsina SM, Lowell CA, Mócsai A, Catz SD, Sperandio M. Src family kinase-mediated vesicle trafficking is critical for neutrophil basement membrane penetration. Haematologica 2019; 105:1845-1856. [PMID: 31699792 PMCID: PMC7327629 DOI: 10.3324/haematol.2019.225722] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 11/05/2019] [Indexed: 01/07/2023] Open
Abstract
Leukocyte recruitment into inflamed tissue is highly dependent on the activation and binding of integrins to their respective ligands, followed by the induction of various signaling events within the cell referred to as outside-in signaling. Src family kinases (SFK) are the central players in the outside-in signaling process, assigning them a critical role for proper immune cell function. Our study investigated the role of SFK on neutrophil recruitment in vivo using Hck−/- Fgr−/- Lyn−/- mice, which lack SFK expressed in neutrophils. We show that loss of SFK strongly reduces neutrophil adhesion and post-arrest modifications in a shear force dependent manner. Additionally, we found that in the absence of SFK, neutrophils display impaired Rab27a-dependent surface mobilization of neutrophil elastase, VLA3 and VLA6 containing vesicles. This results in a defect in neutrophil vascular basement membrane penetration and thus strongly impaired extravasation. Taken together, we demonstrate that SFK play a role in neutrophil post-arrest modifications and extravasation during acute inflammation. These findings may support the current efforts to use SFK-inhibitors in inflammatory diseases with unwanted neutrophil recruitment.
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Affiliation(s)
- Ina Rohwedder
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Angela R M Kurz
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Monika Pruenster
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Roland Immler
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Robert Pick
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Tanja Eggersmann
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Sarah Klapproth
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Jennifer L Johnson
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Sergi Masgrau Alsina
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Clifford A Lowell
- Department of Laboratory Medicine, University of California, San Francisco, CA, USA
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Sergio D Catz
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Markus Sperandio
- Walter-Brendel-Center of Experimental Medicine, Institute of Cardiovascular Physiology and Pathophysiology, Klinikum der Universität, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
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32
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Ran T, Zhang Y, Diao N, Geng S, Chen K, Lee C, Li L. Enhanced Neutrophil Immune Homeostasis Due to Deletion of PHLPP. Front Immunol 2019; 10:2127. [PMID: 31555304 PMCID: PMC6742689 DOI: 10.3389/fimmu.2019.02127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 08/23/2019] [Indexed: 11/13/2022] Open
Abstract
Neutrophils are known to adopt dynamic and distinct functional phenotypes involved in the modulation of inflammation and immune homeostasis. However, inter-cellular signaling mechanisms that govern neutrophil polarization dynamics are not well understood. Employing a novel model of PHLPP deficient mice, we examined how neutrophils deficient in PHLPP may uniquely modulate immune defense and the host response during acute colitis. We found that PHLPP-/- mice were protected from dextran sodium sulfate (DSS)-induced septic colitis characterized by minimal body weight-loss, alleviated colon tissue destruction and reduced clinical symptoms. PHLPP-/- neutrophils have enhanced immune homeostasis as compared to WT neutrophils, reflected in enhanced migratory capacity toward chemoattractants, and reduced expression of inflammatory mediators due to elevated phosphorylation of AKT, STAT1, and ERK. Further, adoptive transfer of PHLPP deficient neutrophils to WT mice is sufficient to potently alleviate the severity of DSS-induced colitis. Our data reveal that PHLPP deficient neutrophils can be uniquely reprogrammed to a state conducive to host inflammation resolution. As a consequence, PHLPP-/- neutrophils can effectively transfer immune homeostasis in mice subjected to acute colitis. Our findings hold significant and novel insights into the mechanisms by which neutrophils can be effectively reprogrammed into a homeostatic state conducive for treating acute injuries such as septic colitis.
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Affiliation(s)
- Taojing Ran
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Na Diao
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Shuo Geng
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Keqiang Chen
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Christina Lee
- Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, United States
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
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33
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Abstract
Neutrophils are implicated in almost every stage of oncogenesis and paradoxically display anti- and pro-tumor properties. Accumulating evidence indicates that neutrophils display diversity in their phenotype resulting from functional plasticity and/or changes to granulopoiesis. In cancer, neutrophils at a range of maturation stages can be identified in the blood and tissues (i.e., outside of their developmental niche). The functional capacity of neutrophils at different states of maturation is poorly understood resulting from challenges in their isolation, identification, and investigation. Thus, the impact of neutrophil maturity on cancer progression and therapy remains enigmatic. In this review, we discuss the identification, prevalence, and function of immature and mature neutrophils in cancer and the potential impact of this on tumor progression and cancer therapy.
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Affiliation(s)
- John B. G. Mackey
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
- Cancer Research UK Beatson Institute, Glasgow, United Kingdom
| | - Seth B. Coffelt
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
- Cancer Research UK Beatson Institute, Glasgow, United Kingdom
| | - Leo M. Carlin
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
- Cancer Research UK Beatson Institute, Glasgow, United Kingdom
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34
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Szilveszter KP, Németh T, Mócsai A. Tyrosine Kinases in Autoimmune and Inflammatory Skin Diseases. Front Immunol 2019; 10:1862. [PMID: 31447854 PMCID: PMC6697022 DOI: 10.3389/fimmu.2019.01862] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/23/2019] [Indexed: 12/30/2022] Open
Abstract
Tyrosine kinases relay signals from diverse leukocyte antigen receptors, innate immune receptors, and cytokine receptors, and therefore mediate the recruitment and activation of various leukocyte populations. Non-receptor tyrosine kinases of the Jak, Src, Syk, and Btk families play major roles in various immune-mediated disorders, and small-molecule tyrosine kinase inhibitors are emerging novel therapeutics in a number of those diseases. Autoimmune and inflammatory skin diseases represent a broad spectrum of immune-mediated diseases. Genetic and pharmacological studies in humans and mice support the role of tyrosine kinases in several inflammatory skin diseases. Atopic dermatitis and psoriasis are characterized by an inflammatory microenvironment which activates cytokine receptors coupled to the Jak-Stat signaling pathway. Jak kinases are also implicated in alopecia areata and vitiligo, skin disorders mediated by cytotoxic T lymphocytes. Genetic studies indicate a critical role for Src-family kinases and Syk in animal models of autoantibody-mediated blistering skin diseases. Here, we review the various tyrosine kinase signaling pathways and their role in various autoimmune and inflammatory skin diseases. Special emphasis will be placed on identification of potential therapeutic targets, as well as on ongoing preclinical and clinical studies for the treatment of inflammatory skin diseases by small-molecule tyrosine kinase inhibitors.
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Affiliation(s)
- Kata P Szilveszter
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Tamás Németh
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
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35
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Singel KL, Emmons TR, Khan ANMNH, Mayor PC, Shen S, Wong JT, Morrell K, Eng KH, Mark J, Bankert RB, Matsuzaki J, Koya RC, Blom AM, McLeish KR, Qu J, Ram S, Moysich KB, Abrams SI, Odunsi K, Zsiros E, Segal BH. Mature neutrophils suppress T cell immunity in ovarian cancer microenvironment. JCI Insight 2019; 4:122311. [PMID: 30730851 PMCID: PMC6483507 DOI: 10.1172/jci.insight.122311] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 01/25/2019] [Indexed: 12/25/2022] Open
Abstract
Epithelial ovarian cancer (EOC) often presents with metastases and ascites. Granulocytic myeloid-derived suppressor cells are an immature population that impairs antitumor immunity. Since suppressive granulocytes in the ascites of patients with newly diagnosed EOC were morphologically mature, we hypothesized that PMN were rendered suppressive in the tumor microenvironment (TME). Circulating PMN from patients were not suppressive but acquired a suppressor phenotype (defined as ≥1 log10 reduction of anti-CD3/CD28-stimulated T cell proliferation) after ascites supernatant exposure. Ascites supernatants (20 of 31 supernatants) recapitulated the suppressor phenotype in PMN from healthy donors. T cell proliferation was restored with ascites removal and restimulation. PMN suppressors also inhibited T cell activation and cytokine production. PMN suppressors completely suppressed proliferation in naive, central memory, and effector memory T cells and in engineered tumor antigen-specific cytotoxic T lymphocytes, while antigen-specific cell lysis was unaffected. Inhibition of complement C3 activation and PMN effector functions, including CR3 signaling, protein synthesis, and vesicular trafficking, abrogated the PMN suppressor phenotype. Moreover, malignant effusions from patients with various metastatic cancers also induced the C3-dependent PMN suppressor phenotype. These results point to PMN impairing T cell expansion and activation in the TME and the potential for complement inhibition to abrogate this barrier to antitumor immunity.
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Affiliation(s)
| | | | | | - Paul C. Mayor
- Department of Surgery, Division of Gynecologic Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Shichen Shen
- New York State Center of Excellence Bioinformatics and Life Sciences, University at Buffalo, Buffalo, New York, USA
| | | | - Kayla Morrell
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Kevin H. Eng
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Jaron Mark
- Department of Surgery, Division of Gynecologic Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Richard B. Bankert
- Department of Microbiology and Immunology, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, New York, USA
| | - Junko Matsuzaki
- Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Richard C. Koya
- Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Anna M. Blom
- Division of Medical Protein Chemistry, Department of Translational Medicine, Lund University, Malmö, Sweden
| | - Kenneth R. McLeish
- Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Jun Qu
- New York State Center of Excellence Bioinformatics and Life Sciences, University at Buffalo, Buffalo, New York, USA
| | - Sanjay Ram
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Kirsten B. Moysich
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | | | - Kunle Odunsi
- Department of Surgery, Division of Gynecologic Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Emese Zsiros
- Department of Surgery, Division of Gynecologic Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Brahm H. Segal
- Department of Immunology
- Department of Internal Medicine, and
- Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
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36
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Németh T, Futosi K, Szabó M, Aradi P, Saito T, Mócsai A, Jakus Z. Importance of Fc Receptor γ-Chain ITAM Tyrosines in Neutrophil Activation and in vivo Autoimmune Arthritis. Front Immunol 2019; 10:252. [PMID: 30858848 PMCID: PMC6397848 DOI: 10.3389/fimmu.2019.00252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/29/2019] [Indexed: 01/02/2023] Open
Abstract
Activating Fcγ receptors associated with Fc receptor γ-chain (FcRγ) are critical for mediating neutrophil effector functions in immune complex-mediated autoimmune diseases. FcRγ contains ITAM tyrosines and the in vivo role of these tyrosines has not been defined in neutrophils and arthritis. In this study, the in vivo functions of FcRγ ITAM tyrosines were characterized using wild type and ITAM tyrosine mutant (Y65F/Y76F) transgenic mice crossed to an FcRγ-deficient genetic background. FcRγ-deficient neutrophils showed undetectable cell surface expression of the activating Fcγ receptor IV, defective immune complex-induced superoxide production, degranulation and spreading. Although the re-expression of both the wild type and the ITAM tyrosine mutant (Y65F/Y76F) FcRγ could restore activating Fcγ receptor expression of FcRγ-deficient neutrophils, only the wild type transgenic form could mediate Fcγ receptor-dependent effector functions. In contrast, neutrophils carrying ITAM tyrosine mutant FcRγ were unable to produce superoxide, mediate degranulation and perform active spreading. In addition, our results confirmed the protection of FcRγ-deficient mice from autoimmune arthritis. Importantly, the presence of the wild type FcRγ transgene, in contrast to the ITAM tyrosine mutant transgene, partially reversed autoimmune arthritis development. The reversing effect of the wild type transgene was even more robust when animals carried the wild type transgene in a homozygous form. Collectively, FcRγ ITAM tyrosines play a critical role in the induction of neutrophil effector responses, the initiation and progression of an autoantibody-induced experimental arthritis in vivo, indicating a signaling, rather than just a receptor stabilizing function of the molecule.
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Affiliation(s)
- Tamás Németh
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Krisztina Futosi
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Marcell Szabó
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Petra Aradi
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, Hungary
| | - Takashi Saito
- Laboratory for Cell Signaling, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
| | - Zoltán Jakus
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary.,MTA-SE "Lendület" Lymphatic Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, Budapest, Hungary
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37
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Nadeem A, Ahmad SF, Al-Harbi NO, Al-Harbi MM, Ibrahim KE, Kundu S, Attia SM, Alanazi WA, AlSharari SD. Inhibition of spleen tyrosine kinase signaling protects against acute lung injury through blockade of NADPH oxidase and IL-17A in neutrophils and γδ T cells respectively in mice. Int Immunopharmacol 2019; 68:39-47. [PMID: 30611000 DOI: 10.1016/j.intimp.2018.12.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/05/2018] [Accepted: 12/28/2018] [Indexed: 12/16/2022]
Abstract
Acute lung injury (ALI) is one of the most serious complications in critically ill patients which often leads to morbidity and mortality. ALI characterized by severe inflammation of lungs occurs due to uncontrolled inflammatory immune response. However, the immunological mechanism(s) are far from being understood. The spleen tyrosine kinase (SYK), a key component of immune receptor signaling, plays a critical role in the modulation of inflammatory signaling in different immune cells. However, its role in ALI remains to be explored. Therefore, in this study, we investigated the effect of R406, a SYK inhibitor in lipopolysaccharide (LPS)-induced ALI mouse model. LPS led to increased SYK expression in neutrophils and gamma delta (γδ) T cells. This was associated with increased neutrophilic airway inflammation, vascular permeability, myeloperoxidase activity in the lung with upregulated expression of NADPH oxidase (NOX2)/MCP-1/TNF-α in neutrophils and IL-17A in γδ T cells/lung. Pulmonary inflammation was associated with higher mortality in mice with ALI. Inhibition of SYK signaling using R406 in the lung led to blockade of neutrophilic airway inflammation, vascular permeability, pro-inflammatory cytokine release and oxidative stress in innate immune cells, i.e. γδ T cells and neutrophils and the lung. R406 administered LPS group had better survival rate than LPS group. This suggests that SYK upregulation in γδ T cells and neutrophils plays an important role in inflammatory process during ALI. In conclusion, R406 exhibited a great potential to block the LPS-induced airway inflammation and mortality which could be developed as a potential future therapy in ALI.
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Affiliation(s)
- Ahmed Nadeem
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
| | - Sheikh F Ahmad
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Naif O Al-Harbi
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed M Al-Harbi
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Khalid E Ibrahim
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Swati Kundu
- Department of Biochemistry, South Campus, University of Delhi, New Delhi, India
| | - Sabry M Attia
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Wael A Alanazi
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Shakir D AlSharari
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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38
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Wen X, Xu X, Sun W, Chen K, Pan M, Wang JM, Bolland SM, Jin T. G-protein-coupled formyl peptide receptors play a dual role in neutrophil chemotaxis and bacterial phagocytosis. Mol Biol Cell 2018; 30:346-356. [PMID: 30540534 PMCID: PMC6589574 DOI: 10.1091/mbc.e18-06-0358] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A dogma of innate immunity is that neutrophils use G-protein–coupled receptors (GPCRs) for chemoattractant to chase bacteria through chemotaxis and then use phagocytic receptors coupled with tyrosine kinases to destroy opsonized bacteria via phagocytosis. Our current work showed that G-protein–coupled formyl peptide receptors (FPRs) directly mediate neutrophil phagocytosis. Mouse neutrophils lacking formyl peptide receptors (Fpr1/2–/–) are defective in the phagocytosis of Escherichia coli and the chemoattractant N-formyl-Met-Leu-Phe (fMLP)-coated beads. fMLP immobilized onto the surface of a bead interacts with FPRs, which trigger a Ca2+ response and induce actin polymerization to form a phagocytic cup for engulfment of the bead. This chemoattractant GPCR/Gi signaling works independently of phagocytic receptor/tyrosine kinase signaling to promote phagocytosis. Thus, in addition to phagocytic receptor-mediated phagocytosis, neutrophils also utilize the chemoattractant GPCR/Gi signaling to mediate phagocytosis to fight against invading bacteria.
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Affiliation(s)
- Xi Wen
- Chemotaxis Signal Section, National Institutes of Health, Bethesda, MD 20852
| | - Xuehua Xu
- Chemotaxis Signal Section, National Institutes of Health, Bethesda, MD 20852
| | - Wenxiang Sun
- Autoimmunity and Functional Genomics Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20852
| | - Keqiang Chen
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Research Institute at Frederick, Frederick, MD 21702-1201
| | - Miao Pan
- Chemotaxis Signal Section, National Institutes of Health, Bethesda, MD 20852
| | - Ji Ming Wang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Research Institute at Frederick, Frederick, MD 21702-1201
| | - Silvia M Bolland
- Autoimmunity and Functional Genomics Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20852
| | - Tian Jin
- Chemotaxis Signal Section, National Institutes of Health, Bethesda, MD 20852
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39
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Hoogendijk AJ, van Vught LA, Wiewel MA, Fuhler GM, Belkasim-Bohoudi H, Horn J, Schultz MJ, Scicluna BP, Peppelenbosch MP, van 't Veer C, de Vos AF, van der Poll T. Kinase activity is impaired in neutrophils of sepsis patients. Haematologica 2018; 104:e233-e235. [PMID: 30514797 DOI: 10.3324/haematol.2018.201913] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Arie J Hoogendijk
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam
| | - Lonneke A van Vught
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam
| | - Maryse A Wiewel
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam
| | - Gwenny M Fuhler
- Department of Gastroenterology and Hepatology, Erasmus MC, Erasmus University of Rotterdam
| | - Hakima Belkasim-Bohoudi
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam
| | - Janneke Horn
- Department of Intensive Care, Academic Medical Center, University of Amsterdam
| | - Marcus J Schultz
- Department of Intensive Care, Academic Medical Center, University of Amsterdam.,Laboratory of Experimental Intensive Care and Anesthesiology, Academic Medical Center, University of Amsterdam
| | - Brendon P Scicluna
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam.,Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC, Erasmus University of Rotterdam
| | - Cornelis van 't Veer
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam
| | - Alex F de Vos
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam .,Divison of Infectious Diseases, Academic Medical Center, University of Amsterdam, the Netherlands
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40
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Vermeren S, Karmakar U, Rossi AG. Immune complex-induced neutrophil functions: A focus on cell death. Eur J Clin Invest 2018; 48 Suppl 2:e12948. [PMID: 29734519 DOI: 10.1111/eci.12948] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/30/2018] [Indexed: 02/06/2023]
Abstract
Neutrophils are amongst the first cells to be recruited to sites of infection or trauma. Neutrophil functional responsiveness is tightly regulated by many agents including immune complexes. These immune cells can generate reactive oxygen species and degranulate to release abundant cytotoxic products, making them efficient at killing invading microorganisms. If neutrophil function is dysregulated, however, these cells have the potential to cause unwanted host tissue damage as exemplified by pathological and chronic inflammatory conditions. In physiological inflammation, once the initial insult has efficiently been dealt with, neutrophils are thought to leave the tissues or undergo programmed cells death, especially apoptosis. Apoptotic neutrophils are then rapidly removed by other phagocytes, primarily macrophages, by mechanisms that do not elicit a pro-inflammatory response. In this review, we discuss the interesting observations and consequences that immune complexes have on neutrophil cell death processes such as apoptosis.
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Affiliation(s)
- Sonja Vermeren
- The MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - Utsa Karmakar
- The MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - Adriano G Rossi
- The MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
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41
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Park JE, Majumdar S, Brand DD, Rosloniec EF, Yi AK, Stuart JM, Kang AH, Myers LK. The role of Syk in peripheral T cells. Clin Immunol 2018; 192:50-57. [PMID: 29673901 DOI: 10.1016/j.clim.2018.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 04/12/2018] [Accepted: 04/12/2018] [Indexed: 12/15/2022]
Abstract
The aim of this study was to understand how Syk affects peripheral T cell function. T cells from Syk-/- chimeric mice and DR1 Sykfl/fl CD4cre conditional mice gave strong CD3-induced Th1, Th2, and Th17 cytokine responses. However, an altered peptide ligand (APL) of human CII (256-276) with two substitutions (F263N, E266D), also called A12, elicited only Th2 cytokine responses from Sykfl/fl T cells but not Sykfl/fl-CD4cre T cells. Western blots revealed a marked increase in the phosphorylation of Syk, JNK and p38 upon A12/DR1 activation in WT or Sykfl/fl T cells but not in Sykfl/flCD4-cre cells. We demonstrate that Syk is required for the APL- induction of suppressive cytokines. Chemical Syk inhibitors blocked activation of GATA-3 by peptide A12/DR1. In conclusion, this study provides novel insights into the role that Syk plays in directing T cell activity, and may shape therapeutic approaches for autoimmune diseases.
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Affiliation(s)
- Jeoung-Eun Park
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, United States
| | - Sirshendu Majumdar
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, United States
| | - David D Brand
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, United States; Microbiology-Immunology-Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163, United States; Research Service, Veterans Affairs Medical Center, Memphis, TN 38104, United States
| | - Edward F Rosloniec
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, United States; Research Service, Veterans Affairs Medical Center, Memphis, TN 38104, United States
| | - Ae-Kyung Yi
- Microbiology-Immunology-Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163, United States
| | - John M Stuart
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, United States; Research Service, Veterans Affairs Medical Center, Memphis, TN 38104, United States
| | - Andrew H Kang
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, United States; Research Service, Veterans Affairs Medical Center, Memphis, TN 38104, United States
| | - Linda K Myers
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38163, United States.
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Samavedam UK, Mitschker N, Kasprick A, Bieber K, Schmidt E, Laskay T, Recke A, Goletz S, Vidarsson G, Schulze FS, Armbrust M, Schulze Dieckhoff K, Pas HH, Jonkman MF, Kalies K, Zillikens D, Gupta Y, Ibrahim SM, Ludwig RJ. Whole-Genome Expression Profiling in Skin Reveals SYK As a Key Regulator of Inflammation in Experimental Epidermolysis Bullosa Acquisita. Front Immunol 2018; 9:249. [PMID: 29497423 PMCID: PMC5818881 DOI: 10.3389/fimmu.2018.00249] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/29/2018] [Indexed: 12/31/2022] Open
Abstract
Because of the morbidity and limited therapeutic options of autoimmune diseases, there is a high, and thus far, unmet medical need for development of novel treatments. Pemphigoid diseases, such as epidermolysis bullosa acquisita (EBA), are prototypical autoimmune diseases that are caused by autoantibodies targeting structural proteins of the skin, leading to inflammation, mediated by myeloid cells. To identify novel treatment targets, we performed cutaneous genome-wide mRNA expression profiling in 190 outbred mice after EBA induction. Comparison of genome-wide mRNA expression profiles in diseased and healthy mice, and construction of a co-expression network identified Sykb (spleen tyrosine kinase, SYK) as a major hub gene. Aligned, pharmacological SYK inhibition protected mice from experimental EBA. Using lineage-specific SYK-deficient mice, we identified SYK expression on myeloid cells to be required to induce EBA. Within the predicted co-expression network, interactions of Sykb with several partners (e.g., Tlr13, Jdp2, and Nfkbid) were validated by curated databases. Additionally, novel gene interaction partners of SYK were experimentally validated. Collectively, our results identify SYK expression in myeloid cells as a requirement to promote inflammation in autoantibody-driven pathologies. This should encourage exploitation of SYK and SYK-regulated genes as potential therapeutic targets for EBA and potentially other autoantibody-mediated diseases.
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Affiliation(s)
- Unni K Samavedam
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Nina Mitschker
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Anika Kasprick
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Katja Bieber
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Tamás Laskay
- Institute for Medical Microbiology and Hygiene, University of Lübeck, Lübeck, Germany
| | - Andreas Recke
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - S Goletz
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Gestur Vidarsson
- Department of Experimental Hematology, Sanquin Research Institute, Amsterdam, Netherlands
| | - Franziska S Schulze
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Mikko Armbrust
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | | | - Hendri H Pas
- Center for Blistering Diseases, Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marcel F Jonkman
- Center for Blistering Diseases, Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Kathrin Kalies
- Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Yask Gupta
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - Ralf J Ludwig
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
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43
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Zhong X, Chen B, Yang L, Yang Z. Molecular and physiological roles of the adaptor protein CARD9 in immunity. Cell Death Dis 2018; 9:52. [PMID: 29352133 PMCID: PMC5833731 DOI: 10.1038/s41419-017-0084-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/11/2017] [Accepted: 10/16/2017] [Indexed: 12/11/2022]
Abstract
CARD9 is a caspase recruitment domain-containing signaling protein that plays a critical role in innate and adaptive immunity. It has been widely demonstrated that CARD9 adaptor allows pattern recognition receptors to induce NF-κB and MAPK activation, which initiates a “downstream” inflammation cytokine cascade and provides effective protection against microbial invasion, especially fungal infection. Here our aim is to update existing paradigms and summarize the most recent findings on the CARD9 signaling pathway, revealing significant mechanistic insights into the pathogenesis of CARD9 deficiency. We also discuss the effect of CARD9 genetic mutations on the in vivo immune response, and highlight clinical advances in non-infection inflammation.
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Affiliation(s)
| | - Bin Chen
- Surgery Department, First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, China
| | - Liang Yang
- Fuzhou Medical College of Nanchang University, Jiangxi, China
| | - Zhiwen Yang
- Department of Pharmacy, Songjiang Hospital Affiliated Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai, China.
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44
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Berman-Booty LD, Eraslan R, Hanumegowda U, Cantor GH, Bounous DI, Janovitz EB, Jones BK, Buiakova O, Hayward M, Wee S. Systemic Loss of C-terminal Src Kinase Expression Elicits Spontaneous Suppurative Inflammation in Conditional Knockout Mice. Vet Pathol 2018; 55:331-340. [DOI: 10.1177/0300985817747330] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
C-terminal Src kinase (Csk) is one of the critical negative regulators of the Src family of kinases. The Src family of kinases are nonreceptor tyrosine kinases that regulate inflammation, cell proliferation, motility, and adhesion. To investigate potential histologic lesions associated with systemic loss of Csk gene activity in adult mice, conditional Csk-knockout mice were examined. Cre-mediated systemic excision of Csk induced by tamoxifen treatment resulted in multiorgan inflammation. Specifically, induction of Csk gene excision with three days of tamoxifen treatment resulted in greater than 90% gene excision. Strikingly, these mice developed enteritis that ranged from minimal and suppurative to severe, fibrinonecrosuppurative and hemorrhagic. Other inflammatory lesions included suppurative pneumonia, gastritis, and myocarditis, and increased numbers of inflammatory cells within the hepatic parenchyma. When tamoxifen treatment was reduced from three days to one day in an effort to lower the level of Csk gene excision and limit lesion development, the mice developed severe suppurative to pyogranulomatous pneumonia and minimal to mild suppurative enteritis. Lesions observed secondary to Csk gene excision suggest important roles for Csk in downregulating the proinflammatory activity of the Src family of kinases and limiting neutrophil-mediated inflammation.
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Affiliation(s)
| | - Rukiye Eraslan
- Bristol-Myers Squibb, Princeton, NJ, USA
- Invivotek, Hamilton, NJ, USA
| | - Umesh Hanumegowda
- Bristol-Myers Squibb, Princeton, NJ, USA
- ViiV Healthcare, Wallingford, CT, USA
| | | | | | | | | | | | | | - Susan Wee
- Bristol-Myers Squibb, Princeton, NJ, USA
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45
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Nishi H, Furuhashi K, Cullere X, Saggu G, Miller MJ, Chen Y, Rosetti F, Hamilton SL, Yang L, Pittman SP, Liao J, Herter JM, Berry JC, DeAngelo DJ, Zhu C, Tsokos GC, Mayadas TN. Neutrophil FcγRIIA promotes IgG-mediated glomerular neutrophil capture via Abl/Src kinases. J Clin Invest 2017; 127:3810-3826. [PMID: 28891817 DOI: 10.1172/jci94039] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/18/2017] [Indexed: 12/30/2022] Open
Abstract
The kidney glomerular capillaries are frequent sites of immune complex deposition and subsequent neutrophil accumulation in post-infectious and rapidly progressive glomerulonephritis. However, the mechanisms of neutrophil recruitment remain enigmatic, and there is no targeted therapeutic to avert this proximal event in glomerular inflammation. The uniquely human activating Fc receptor FcγRIIA promotes glomerular neutrophil accumulation and damage in anti-glomerular basement membrane-induced (anti-GBM-induced) glomerulonephritis when expressed on murine neutrophils. Here, we found that neutrophils are directly captured by immobilized IgG antibodies under physiological flow conditions in vitro through FcγRIIA-dependent, Abl/Src tyrosine kinase-mediated F-actin polymerization. Biophysical measurements showed that the lifetime of FcγRIIA-IgG bonds increased under mechanical force in an F-actin-dependent manner, which could enable the capture of neutrophils under physiological flow. Kidney intravital microscopy revealed that circulating neutrophils, which were similar in diameter to glomerular capillaries, abruptly arrested following anti-GBM antibody deposition via neutrophil FcγRIIA and Abl/Src kinases. Accordingly, inhibition of Abl/Src with bosutinib reduced FcγRIIA-mediated glomerular neutrophil accumulation and renal injury in experimental, crescentic anti-GBM nephritis. These data identify a pathway of neutrophil recruitment within glomerular capillaries following IgG deposition that may be targeted by bosutinib to avert glomerular injury.
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Affiliation(s)
- Hiroshi Nishi
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Kazuhiro Furuhashi
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Xavier Cullere
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Gurpanna Saggu
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Mark J Miller
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Yunfeng Chen
- Woodruff School of Mechanical Engineering and Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Florencia Rosetti
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Samantha L Hamilton
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Lihua Yang
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Spencer P Pittman
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jiexi Liao
- Woodruff School of Mechanical Engineering and Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Jan M Herter
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Jeffrey C Berry
- Donald Danforth Plant Science Center, St. Louis, Missouri, USA
| | - Daniel J DeAngelo
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Cheng Zhu
- Woodruff School of Mechanical Engineering and Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - George C Tsokos
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Tanya N Mayadas
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
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46
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Differential Signalling and Kinetics of Neutrophil Extracellular Trap Release Revealed by Quantitative Live Imaging. Sci Rep 2017; 7:6529. [PMID: 28747804 PMCID: PMC5529471 DOI: 10.1038/s41598-017-06901-w] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/20/2017] [Indexed: 02/07/2023] Open
Abstract
A wide variety of microbial and inflammatory factors induce DNA release from neutrophils as neutrophil extracellular traps (NETs). Consensus on the kinetics and mechanism of NET release has been hindered by the lack of distinctive methods to specifically quantify NET release in time. Here, we validate and refine a semi-automatic live imaging approach for quantification of NET release. Importantly, our approach is able to correct for neutrophil input and distinguishes NET release from neutrophil death by other means, aspects that are lacking in many NET quantification methods. Real time visualization shows that opsonized S. aureus rapidly induces cell death by toxins, while actual NET formation occurs after 90 minutes, similar to the kinetics of NET release by immune complexes and PMA. Inhibition of SYK, PI3K and mTORC2 attenuates NET release upon challenge with physiological stimuli but not with PMA. In contrast, neutrophils from chronic granulomatous disease patients show decreased NET release only in response to PMA. With this refined method, we conclude that NET release in primary human neutrophils is dependent on the SYK-PI3K-mTORC2 pathway and that PMA stimulation should be regarded as mechanistically distinct from NET formation induced by natural triggers.
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47
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Oleuropein and hydroxytyrosol inhibit the N-formyl-methionyl-leucyl-phenylalanine-induced neutrophil degranulation and chemotaxis via AKT, p38, and ERK1/2 MAP-Kinase inhibition. Inflammopharmacology 2017; 25:673-680. [PMID: 28711992 DOI: 10.1007/s10787-017-0367-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 05/29/2017] [Indexed: 12/25/2022]
Abstract
PURPOSE Oleuropein and hydroxytyrosol are polyphenols that are extracted from olives and are major biological active components of olives and olive oil. Oleuropein and hydroxytyrosol exhibit interesting pharmacological effects on cells, and have been shown to have many health benefits such as anti-inflammatory effects. These effects were mainly attributed to their ability to scavenge the reactive oxygen species (ROS) produced by phagocytes such as neutrophils. The aim of this study was to investigate the effect of oleuropein and hydroxytyrosol on other neutrophil functions. METHODS Human neutrophils were isolated from healthy donors. ROS production was measured by luminol-amplified chemiluminescence. Degranulation was assessed by measuring myeloperoxidase activity and Western blots. Chemotaxis was assessed by the under-agarose chemotaxis assay. Phosphorylated proteins were assessed by gel electrophoresis and Western blots. RESULTS We show that in addition to their ROS scavenging effect, oleuropein and hydroxytyrosol significantly inhibited the bacterial peptide N-formyl-methionyl-leucyl-phenylalanine (fMLF)-induced degranulation of azurophilic and specific granules as measured by myeloperoxidase and lactoferrin release, respectively. We also show that oleuropein and hydroxytyrosol reduced fMLF-induced neutrophil chemotaxis. Interestingly, both agents impaired the fMLF-induced AKT, p38MAPKinase, and ERK1/2 phosphorylation, signaling molecules that are involved in pathways regulating neutrophil functions. CONCLUSION Our data suggest that the anti-inflammatory properties of oleuropein and hydroxytyrosol are not only restricted to their ROS scavenging effect, but also involve the inhibition of two other major pro-inflammatory neutrophil functions.
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48
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You RI, Chu CL. SHP-1 (PTPN6) keeps the inflammation at bay: limiting IL-1α-mediated neutrophilic dermatoses by preventing Syk kinase activation. Cell Mol Immunol 2017; 14:cmi201759. [PMID: 28690326 PMCID: PMC5675957 DOI: 10.1038/cmi.2017.59] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 12/12/2022] Open
Affiliation(s)
- Ren-In You
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualian, Taiwan, China
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan, China
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49
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Németh T, Virtic O, Sitaru C, Mócsai A. The Syk Tyrosine Kinase Is Required for Skin Inflammation in an In Vivo Mouse Model of Epidermolysis Bullosa Acquisita. J Invest Dermatol 2017; 137:2131-2139. [PMID: 28576735 PMCID: PMC5624865 DOI: 10.1016/j.jid.2017.05.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 05/09/2017] [Accepted: 05/21/2017] [Indexed: 01/10/2023]
Abstract
The inflammatory form of epidermolysis bullosa acquisita is caused by autoantibodies against type VII collagen (C7), a component of the dermal-epidermal junction. We have previously shown that myeloid Src family kinases mediate skin inflammation triggered by anti-C7 antibodies. Here we identify the Syk tyrosine kinase as a critical component of autoantibody-induced skin inflammation downstream of Src family kinases. Immobilized C7–anti-C7 immune complexes triggered neutrophil activation and Syk phosphorylation in a Src family kinase-dependent manner. Bone marrow chimeric mice lacking Syk in their hematopoietic compartment were completely protected from skin inflammation triggered by anti-C7 antibodies despite normal circulating anti-C7 levels. Syk deficiency abrogated the accumulation of CXCL2, IL-1β, and leukotriene B4 at the site of inflammation and resulted in defective in vivo neutrophil recruitment. Syk–/– neutrophils had a normal intrinsic migratory capacity but failed to release CXCL2 or leukotriene B4 upon activation by immobilized C7–anti-C7 immune complexes, indicating a role for Syk in the amplification of the inflammation process. These results identify Syk as a critical component of skin inflammation in a mouse model of epidermolysis bullosa acquisita and as a potential therapeutic target in epidermolysis bullosa acquisita and other mechanistically related inflammatory skin diseases such as bullous pemphigoid.
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Affiliation(s)
- Tamás Németh
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary; MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Oana Virtic
- Department of Dermatology, University Hospital Freiburg, Freiburg, Germany
| | - Cassian Sitaru
- Department of Dermatology, University Hospital Freiburg, Freiburg, Germany; BIOSS Centre for Biological Signalling Studies, Freiburg, Germany
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary; MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary.
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50
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Regulation of Discrete Functional Responses by Syk and Src Family Tyrosine Kinases in Human Neutrophils. J Immunol Res 2017; 2017:4347121. [PMID: 28512645 PMCID: PMC5420437 DOI: 10.1155/2017/4347121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 03/14/2017] [Indexed: 01/03/2023] Open
Abstract
Neutrophils play a critical role in innate immunity and also influence adaptive immune responses. This occurs in good part through their production of inflammatory and immunomodulatory cytokines, in conjunction with their prolonged survival at inflamed foci. While a picture of the signaling machinery underlying these neutrophil responses is now emerging, much remains to be uncovered. In this study, we report that neutrophils constitutively express various Src family isoforms (STKs), as well as Syk, and that inhibition of these protein tyrosine kinases selectively hinders inflammatory cytokine generation by acting posttranscriptionally. Accordingly, STK or Syk inhibition decreases the phosphorylation of signaling intermediates (e.g., eIF-4E, S6K, and MNK1) involved in translational control. By contrast, delayed apoptosis appears to be independent of either STKs or Syk. Our data therefore significantly extend our understanding of which neutrophil responses are governed by STKs and Syk and pinpoint some signaling intermediates that are likely involved. In view of the foremost role of neutrophils in several chronic inflammatory conditions, our findings identify potential molecular targets that could be exploited for future therapeutic intervention.
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