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Mannes PZ, Adams TS, Farsijani S, Barnes CE, Latoche JD, Day KE, Nedrow JR, Ahangari F, Kaminski N, Lee JS, Tavakoli S. Noninvasive assessment of the lung inflammation-fibrosis axis by targeted imaging of CMKLR1. SCIENCE ADVANCES 2024; 10:eadm9817. [PMID: 38896611 PMCID: PMC11186491 DOI: 10.1126/sciadv.adm9817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 05/14/2024] [Indexed: 06/21/2024]
Abstract
Precision management of fibrotic lung diseases is challenging due to their diverse clinical trajectories and lack of reliable biomarkers for risk stratification and therapeutic monitoring. Here, we validated the accuracy of CMKLR1 as an imaging biomarker of the lung inflammation-fibrosis axis. By analyzing single-cell RNA sequencing datasets, we demonstrated CMKLR1 expression as a transient signature of monocyte-derived macrophages (MDMφ) enriched in patients with idiopathic pulmonary fibrosis (IPF). Consistently, we identified MDMφ as the major driver of the uptake of CMKLR1-targeting peptides in a murine model of bleomycin-induced lung fibrosis. Furthermore, CMKLR1-targeted positron emission tomography in the murine model enabled quantification and spatial mapping of inflamed lung regions infiltrated by CMKLR1-expressing macrophages and emerged as a robust predictor of subsequent lung fibrosis. Last, high CMKLR1 expression by bronchoalveolar lavage cells identified an inflammatory endotype of IPF with poor survival. Our investigation supports the potential of CMKLR1 as an imaging biomarker for endotyping and risk stratification of fibrotic lung diseases.
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Affiliation(s)
- Philip Z. Mannes
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
- Medical Scientist Training Program, University of Pittsburgh, Pittsburgh, PA, USA
| | - Taylor S. Adams
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Samaneh Farsijani
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Aging and Population Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Clayton E. Barnes
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Joseph D. Latoche
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kathryn E. Day
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jessie R. Nedrow
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Farida Ahangari
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Janet S. Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University, St. Louis, MO, USA
| | - Sina Tavakoli
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Heart, Lung, Blood, and Vascular Medicine Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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2
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Murano H, Inoue S, Hashidate-Yoshida T, Shindou H, Shimizu T, Otaki Y, Minegishi Y, Kitaoka T, Futakuchi M, Igarashi A, Nishiwaki M, Nemoto T, Sato M, Kobayashi M, Sato K, Hanawa T, Miyazaki O, Watanabe M. Lysophospholipid Acyltransferase 9 Promotes Emphysema Formation via Platelet-activating Factor. Am J Respir Cell Mol Biol 2024; 70:482-492. [PMID: 38377392 DOI: 10.1165/rcmb.2023-0253oc] [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: 07/10/2023] [Accepted: 02/20/2024] [Indexed: 02/22/2024] Open
Abstract
Cigarette smoking is known to be the leading cause of chronic obstructive pulmonary disease (COPD). However, the detailed mechanisms have not been elucidated. PAF (platelet-activating factor), a potent inflammatory mediator, is involved in the pathogenesis of various respiratory diseases such as bronchial asthma and COPD. We focused on LPLAT9 (lysophospholipid acyltransferase 9), a biosynthetic enzyme of PAF, in the pathogenesis of COPD. LPLAT9 gene expression was observed in excised COPD lungs and single-cell RNA sequencing data of alveolar macrophages (AMs). LPLAT9 was predominant and upregulated in AMs, particularly monocyte-derived AMs, in patients with COPD. To identify the function of LPLAT9/PAF in AMs in the pathogenesis of COPD, we exposed systemic LPLAT9-knockout (LPALT9-/-) mice to cigarette smoke (CS). CS increased the number of AMs, especially the monocyte-derived fraction, which secreted MMP12 (matrix metalloprotease 12). Also, CS augmented LPLAT9 phosphorylation/activation on macrophages and, subsequently, PAF synthesis in the lung. The LPLAT9-/- mouse lung showed reduced PAF production after CS exposure. Intratracheal PAF administration accumulated AMs by increasing MCP1 (monocyte chemoattractant protein-1). After CS exposure, AM accumulation and subsequent pulmonary emphysema, a primary pathologic change of COPD, were reduced in LPALT9-/- mice compared with LPLAT9+/+ mice. Notably, these phenotypes were again worsened by LPLAT9+/+ bone marrow transplantation in LPALT9-/- mice. Thus, CS-induced LPLAT9 activation in monocyte-derived AMs aggravated pulmonary emphysema via PAF-induced further accumulation of AMs. These results suggest that PAF synthesized by LPLAT9 has an important role in the pathogenesis of COPD.
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Affiliation(s)
- Hiroaki Murano
- Department of Cardiology, Pulmonology, and Nephrology and
- Department of Lipid Life Science and
| | - Sumito Inoue
- Department of Cardiology, Pulmonology, and Nephrology and
| | | | - Hideo Shindou
- Department of Lipid Life Science and
- Department of Medical Lipid Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; and
| | - Takao Shimizu
- Department of Lipid Signaling Project, National Center for Global Health and Medicine, Tokyo, Japan
- Institute of Microbial Chemistry, Tokyo, Japan
| | - Yoichiro Otaki
- Department of Cardiology, Pulmonology, and Nephrology and
| | | | - Takumi Kitaoka
- Department of Pathology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Mitsuru Futakuchi
- Department of Pathology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Akira Igarashi
- Department of Cardiology, Pulmonology, and Nephrology and
| | | | - Takako Nemoto
- Department of Cardiology, Pulmonology, and Nephrology and
| | - Masamichi Sato
- Department of Cardiology, Pulmonology, and Nephrology and
| | - Maki Kobayashi
- Department of Cardiology, Pulmonology, and Nephrology and
| | - Kento Sato
- Department of Cardiology, Pulmonology, and Nephrology and
| | | | - Osamu Miyazaki
- Department of Cardiology, Pulmonology, and Nephrology and
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Haidar Z, Traboulsi H, Eidelman DH, Baglole CJ. Differential inflammatory profile in the lungs of mice exposed to cannabis smoke with varying THC:CBD ratio. Arch Toxicol 2023; 97:1963-1978. [PMID: 37179517 PMCID: PMC10183104 DOI: 10.1007/s00204-023-03514-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023]
Abstract
Cannabis contains cannabinoids including Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD). THC causes the psychoactive effects of cannabis, and both THC and CBD are thought to be anti-inflammatory. Cannabis is typically consumed by inhaling smoke that contains thousands of combustion products that may damage the lungs. However, the relationship between cannabis smoke exposure and alterations in respiratory health is poorly defined. To address this gap in knowledge, we first developed a mouse model of cannabis smoke exposure using a nose-only rodent inhalation exposure system. We then tested the acute effects of two dried cannabis products that differ substantially in their THC-CBD ratio: Indica-THC dominant (I-THC; 16-22% THC) and Sativa-CBD dominant (S-CBD; 13-19% CBD). We demonstrate that this smoke exposure regime not only delivers physiologically relevant levels of THC to the bloodstream, but that acute inhalation of cannabis smoke modulates the pulmonary immune response. Cannabis smoke decreased the percentage of lung alveolar macrophages but increased lung interstitial macrophages (IMs). There was also a decrease in lung dendritic cells as well as Ly6Cintermediate and Ly6Clow monocytes, but an increase in lung neutrophils and CD8+ T cells. These immune cell changes were paralleled with changes in several immune mediators. These immunological modifications were more pronounced when mice were exposed to S-CBD compared to the I-THC variety. Thus, we show that acute cannabis smoke differentially affects lung immunity based on the THC:CBD ratio, thereby providing a foundation to further explore the effect of chronic cannabis smoke exposures on pulmonary health.
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Affiliation(s)
- Zahraa Haidar
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd (EM22248), Montreal, QC, H4A3J1, Canada
- Meakins-Christie Laboratories, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - Hussein Traboulsi
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd (EM22248), Montreal, QC, H4A3J1, Canada
- Meakins-Christie Laboratories, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - David H Eidelman
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd (EM22248), Montreal, QC, H4A3J1, Canada
- Meakins-Christie Laboratories, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - Carolyn J Baglole
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd (EM22248), Montreal, QC, H4A3J1, Canada.
- Meakins-Christie Laboratories, Montreal, QC, Canada.
- Department of Medicine, McGill University, Montreal, QC, Canada.
- Department of Pathology, McGill University, Montreal, QC, Canada.
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, Canada.
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Gredic M, Karnati S, Ruppert C, Guenther A, Avdeev SN, Kosanovic D. Combined Pulmonary Fibrosis and Emphysema: When Scylla and Charybdis Ally. Cells 2023; 12:1278. [PMID: 37174678 PMCID: PMC10177208 DOI: 10.3390/cells12091278] [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: 01/31/2023] [Revised: 04/17/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Combined pulmonary fibrosis and emphysema (CPFE) is a recently recognized syndrome that, as its name indicates, involves the existence of both interstitial lung fibrosis and emphysema in one individual, and is often accompanied by pulmonary hypertension. This debilitating, progressive condition is most often encountered in males with an extensive smoking history, and is presented by dyspnea, preserved lung volumes, and contrastingly impaired gas exchange capacity. The diagnosis of the disease is based on computed tomography imaging, demonstrating the coexistence of emphysema and interstitial fibrosis in the lungs, which might be of various types and extents, in different areas of the lung and several relative positions to each other. CPFE bears high mortality and to date, specific and efficient treatment options do not exist. In this review, we will summarize current knowledge about the clinical attributes and manifestations of CPFE. Moreover, we will focus on pathophysiological and pathohistological lung phenomena and suspected etiological factors of this disease. Finally, since there is a paucity of preclinical research performed for this particular lung pathology, we will review existing animal studies and provide suggestions for the development of additional in vivo models of CPFE syndrome.
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Affiliation(s)
- Marija Gredic
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, 35392 Giessen, Germany
| | - Srikanth Karnati
- Institute for Anatomy and Cell Biology, Julius-Maximilians-University Würzburg, 97070 Würzburg, Germany
| | - Clemens Ruppert
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, 35392 Giessen, Germany
- UGMLC Giessen Biobank & European IPF Registry/Biobank, 35392 Giessen, Germany
| | - Andreas Guenther
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, 35392 Giessen, Germany
- UGMLC Giessen Biobank & European IPF Registry/Biobank, 35392 Giessen, Germany
- Institute for Lung Health (ILH), 35392 Giessen, Germany
- Lung Clinic, Evangelisches Krankenhaus Mittelhessen, 35398 Giessen, Germany
| | - Sergey N. Avdeev
- Department of Pulmonology, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Djuro Kosanovic
- Department of Pulmonology, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
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Han B, Liu Q, Su X, Zhou L, Zhang B, Kang H, Ning J, Li C, Zhao B, Niu Y, Chen W, Chen L, Zhang R. The role of PP2A /NLRP3 signaling pathway in ambient particulate matter 2.5 induced lung injury. CHEMOSPHERE 2022; 307:135794. [PMID: 35926746 DOI: 10.1016/j.chemosphere.2022.135794] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/09/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Ambient particulate matter 2.5 (PM2.5) exposure has been linked to pulmonary fibrosis. However, the key signaling pathways remained unclear. In the present study, we applied a mouse model with myeloid-specific deletion of Ppp2r1a gene (encoding protein phosphatase 2 A (PP2A) A subunit) to identify the key signaling pathways involved in PM2.5-induced pulmonary fibrosis. PP2A Aα-/- homozygote mice and matched wild-type (WT) littermates were exposed to filtered air (FA), unfiltered air (UA), and concentrated PM2.5 (CA) in a real-ambient PM exposure system for 8 weeks and 16 weeks, respectively. The mice exposed to PM2.5 displayed a progressive inflammation and pulmonary fibrosis. Moreover, the expressions of NLRP3, pro-caspase-1, caspase-1, ASC and IL-1β were increased in mice lung following PM2.5 exposure, indicating PM2.5 exposure caused pulmonary inflammation by the NLRP3 pathways activation. Furthermore, the effects of PM exposure on pulmonary inflammation, pulmonary fibrosis, oxidative stress, and pulmonary function damage were significantly enhanced in PP2A-/- mice compared to WT mice, indicating the role of PP2A in the regulation of pulmonary injury induced by PM exposure. In vitro study confirmed that PP2A was involved in the PM2.5-induced inflammation response and NLRP3 inflammasome activation. Importantly, we identified PP2A regulated the activation of NLRP3 pathways by direct dephosphorylating IRE1α in response to PM2.5 exposure. Taken together, our results demonstrated that PP2A-IRE1α-NLRP3 signaling pathway played a crucial role in regulating the inflammation response, triggering the lung fibrogenesis upon PM2.5 exposure. Our findings provide new insights into regulatory role of PP2A in human diseases upon the PM exposure.
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Affiliation(s)
- Bin Han
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Qingping Liu
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Xuan Su
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Lixiao Zhou
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Boyuan Zhang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Hui Kang
- Occupational Health and Environmental Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Jie Ning
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Chen Li
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Bo Zhao
- Department of Laboratory Diagnosis, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Yujie Niu
- Occupational Health and Environmental Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Wen Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Liping Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Rong Zhang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
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6
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Quan DH, Kwong AJ, Hansbro PM, Britton WJ. No smoke without fire: the impact of cigarette smoking on the immune control of tuberculosis. Eur Respir Rev 2022; 31:210252. [PMID: 35675921 PMCID: PMC9488690 DOI: 10.1183/16000617.0252-2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/20/2022] [Indexed: 12/12/2022] Open
Abstract
Cigarette smoke (CS) exposure is a key risk factor for both active and latent tuberculosis (TB). It is associated with delayed diagnosis, more severe disease progression, unfavourable treatment outcomes and relapse after treatment. Critically, CS exposure is common in heavily populated areas with a high burden of TB, such as China, India and the Russian Federation. It is therefore prudent to evaluate interventions for TB while taking into account the immunological impacts of CS exposure. This review is a mechanistic examination of how CS exposure impairs innate barrier defences, as well as alveolar macrophage, neutrophil, dendritic cell and T-cell functions, in the context of TB infection and disease.
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Affiliation(s)
- Diana H Quan
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Sydney, Australia
- D.H. Quan and W.J. Britton contributed equally to this article as lead authors and supervised the work
| | | | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, Sydney, Australia
| | - Warwick J Britton
- Tuberculosis Research Program at the Centenary Institute, The University of Sydney, Sydney, Australia
- Dept of Clinical Immunology, Royal Prince Alfred Hospital, Sydney, Australia
- D.H. Quan and W.J. Britton contributed equally to this article as lead authors and supervised the work
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Roberts LB, Berkachy R, Wane M, Patel DF, Schnoeller C, Lord GM, Gounaris K, Ryffel B, Quesniaux V, Darby M, Horsnell WGC, Selkirk ME. Differential Regulation of Allergic Airway Inflammation by Acetylcholine. Front Immunol 2022; 13:893844. [PMID: 35711456 PMCID: PMC9196131 DOI: 10.3389/fimmu.2022.893844] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/03/2022] [Indexed: 01/14/2023] Open
Abstract
Acetylcholine (ACh) from neuronal and non-neuronal sources plays an important role in the regulation of immune responses and is associated with the development of several disease pathologies. We have previously demonstrated that group 2 innate lymphoid cell (ILC2)-derived ACh is required for optimal type 2 responses to parasitic infection and therefore sought to determine whether this also plays a role in allergic inflammation. RoraCre+ChatLoxP mice (in which ILC2s cannot synthesize ACh) were exposed to an allergenic extract of the fungus Alternaria alternata, and immune responses in the airways and lung tissues were analyzed. Airway neutrophilia and expression of the neutrophil chemoattractants CXCL1 and CXCL2 were enhanced 24 h after exposure, suggesting that ILC2-derived ACh plays a role in limiting excessive pulmonary neutrophilic inflammation. The effect of non-selective depletion of ACh was examined by intranasal administration of a stable parasite-secreted acetylcholinesterase. Depletion of airway ACh in this manner resulted in a more profound enhancement of neutrophilia and chemokine expression, suggesting multiple cellular sources for the release of ACh. In contrast, depletion of ACh inhibited Alternaria-induced activation of ILC2s, suppressing the expression of IL-5, IL-13, and subsequent eosinophilia. Depletion of ACh reduced macrophages with an alternatively activated M2 phenotype and an increase in M1 macrophage marker expression. These data suggest that ACh regulates allergic airway inflammation in several ways, enhancing ILC2-driven eosinophilia but suppressing neutrophilia through reduced chemokine expression.
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Affiliation(s)
- Luke B. Roberts
- Department of Life Sciences, Imperial College London, London, United Kingdom,School of Immunology and Microbial Sciences, King’s College London, Great Maze Pond, London, United Kingdom,*Correspondence: Luke B. Roberts, ; Murray E. Selkirk,
| | - Rita Berkachy
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Madina Wane
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Dhiren F. Patel
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Corinna Schnoeller
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Graham M. Lord
- School of Immunology and Microbial Sciences, King’s College London, Great Maze Pond, London, United Kingdom,Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Kleoniki Gounaris
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Bernhard Ryffel
- Laboratory of Molecular and Experimental Immunology and Neurogenetics, UMR 7355, CNRS-University of Orleans and Le Studium Institute for Advanced Studies, Rue Dupanloup, Orléans, France
| | - Valerie Quesniaux
- Laboratory of Molecular and Experimental Immunology and Neurogenetics, UMR 7355, CNRS-University of Orleans and Le Studium Institute for Advanced Studies, Rue Dupanloup, Orléans, France
| | - Matthew Darby
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - William G. C. Horsnell
- Laboratory of Molecular and Experimental Immunology and Neurogenetics, UMR 7355, CNRS-University of Orleans and Le Studium Institute for Advanced Studies, Rue Dupanloup, Orléans, France,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa,College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Murray E. Selkirk
- Department of Life Sciences, Imperial College London, London, United Kingdom,*Correspondence: Luke B. Roberts, ; Murray E. Selkirk,
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8
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Fung NH, Wang H, Vlahos R, Wilson N, Lopez AF, Owczarek CM, Bozinovski S. Targeting the human β
c
receptor inhibits inflammatory myeloid cells and lung injury caused by acute cigarette smoke exposure. Respirology 2022; 27:617-629. [PMID: 35599245 PMCID: PMC9542426 DOI: 10.1111/resp.14297] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 05/09/2022] [Indexed: 12/23/2022]
Abstract
Background and objective Chronic obstructive pulmonary disease (COPD) is a devastating disease commonly caused by cigarette smoke (CS) exposure that drives tissue injury by persistently recruiting myeloid cells into the lungs. A significant portion of COPD patients also present with overlapping asthma pathology including eosinophilic inflammation. The βc cytokine family includes granulocyte monocyte‐colony‐stimulating factor, IL‐5 and IL‐3 that signal through their common receptor subunit βc to promote the expansion and survival of multiple myeloid cells including monocytes/macrophages, neutrophils and eosinophils. Methods We have used our unique human βc receptor transgenic (hβcTg) mouse strain that expresses human βc instead of mouse βc and βIL3 in an acute CS exposure model. Lung tissue injury was assessed by histology and measurement of albumin and lactate dehydrogenase levels in the bronchoalveolar lavage (BAL) fluid. Transgenic mice were treated with an antibody (CSL311) that inhibits human βc signalling. Results hβcTg mice responded to acute CS exposure by expanding blood myeloid cell numbers and recruiting monocyte‐derived macrophages (cluster of differentiation 11b+ [CD11b+] interstitial and exudative macrophages [IM and ExM]), neutrophils and eosinophils into the lungs. This inflammatory response was associated with lung tissue injury and oedema. Importantly, CSL311 treatment in CS‐exposed mice markedly reduced myeloid cell numbers in the blood and BAL compartment. Furthermore, CSL311 significantly reduced lung CD11b+ IM and ExM, neutrophils and eosinophils, and this decline was associated with a significant reduction in matrix metalloproteinase‐12 (MMP‐12) and IL‐17A expression, tissue injury and oedema. Conclusion This study identifies CSL311 as a therapeutic antibody that potently inhibits immunopathology and lung injury caused by acute CS exposure. Myeloid cells, including macrophages, neutrophils and eosinophils, are important cellular drivers of inflammation and injury. In this study, we blocked granulocyte monocyte‐colony stimulating factor, IL‐5 and IL‐3 signalling with an anti‐βc receptor antibody (CSL311), which greatly reduced lung inflammation and injury in a pre‐clinical model of acute cigarette smoke exposure.
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Affiliation(s)
- Nok Him Fung
- School of Health & Biomedical Sciences RMIT University Bundoora Victoria
| | - Hao Wang
- School of Health & Biomedical Sciences RMIT University Bundoora Victoria
| | - Ross Vlahos
- School of Health & Biomedical Sciences RMIT University Bundoora Victoria
| | | | - Angel F. Lopez
- Centre for Cancer Biology SA Pathology and UniSA Adelaide South Australia Australia
| | | | - Steven Bozinovski
- School of Health & Biomedical Sciences RMIT University Bundoora Victoria
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Smoking-, Alcohol-, and Age-Related Alterations of Blood Monocyte Subsets and Circulating CD4/CD8 T Cells in Head and Neck Cancer. BIOLOGY 2022; 11:biology11050658. [PMID: 35625386 PMCID: PMC9138171 DOI: 10.3390/biology11050658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/22/2022] [Indexed: 11/17/2022]
Abstract
Head and neck squamous cell carcinoma (HNSCC) represents a heterogeneous malignant disease of the oral cavity, pharynx, and larynx. Although cigarette smoking, alcohol abuse, and aging are well-established associated factors for HNSCC, their respective influence on immunologic alterations of monocyte subsets or T-cell compositions in the peripheral blood has not yet been fully unveiled. Using flow cytometry, whole blood measurements of CD14/CD16 monocyte subsets and analyses of T-cell subsets in isolated PBMC fractions were carried out in 64 HNSCC patients in view of their tobacco and alcohol consumption, as well as their age, in comparison to healthy volunteers. Flow cytometric analysis revealed significantly increased expression of monocytic CD11b, as well as significantly decreased expression levels of CX3CR1 on classical and intermediate monocyte subsets in smoking-related and in alcohol-related HNSCC patients compared to healthy donors. Peripheral monocytes revealed an age-correlated significant decrease in PD-L1 within the entirety of the HNSCC cohort. Furthermore, we observed significantly decreased abundances of CD8+ effector memory T cells in active-smoking HNSCC patients and significantly increased percentages of CD8+ effector T cells in alcohol-abusing patients compared to the non-smoking/non-drinking patient cohort. Our data indicate an enhanced influence of smoking and alcohol abuse on the dynamics and characteristics of circulating monocyte subsets and CD4/CD8 T-cell subset proportions, as well as an age-related weakened immunosuppression in head and neck cancer patients.
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