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Pan D, Ladds G, Rahman KM, Pitchford SC. Exploring bias in platelet P2Y 1 signalling: Host defence versus haemostasis. Br J Pharmacol 2024; 181:580-592. [PMID: 37442808 PMCID: PMC10952580 DOI: 10.1111/bph.16191] [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: 01/16/2023] [Revised: 04/21/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023] Open
Abstract
Platelets are necessary for maintaining haemostasis. Separately, platelets are important for the propagation of inflammation during the host immune response against infection. The activation of platelets also causes inappropriate inflammation in various disease pathologies, often in the absence of changes to haemostasis. The separate functions of platelets during inflammation compared with haemostasis are therefore varied and this will be reflected in distinct pathways of activation. The activation of platelets by the nucleotide adenosine diphosphate (ADP) acting on P2Y1 and P2Y12 receptors is important for the development of platelet thrombi during haemostasis. However, P2Y1 stimulation of platelets is also important during the inflammatory response and paradoxically in scenarios where no changes to haemostasis and platelet aggregation occur. In these events, Rho-GTPase signalling, rather than the canonical phospholipase Cβ (PLCβ) signalling pathway, is necessary. We describe our current understanding of these differences, reflecting on recent advances in knowledge of P2Y1 structure, and the possibility of biased agonism occurring from activation via other endogenous nucleotides compared with ADP. Knowledge arising from these different pathways of P2Y1 stimulation of platelets during inflammation compared with haemostasis may help therapeutic control of platelet function during inflammation or infection, while preserving essential haemostasis. LINKED ARTICLES: This article is part of a themed issue on Platelet purinergic receptor and non-thrombotic disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.4/issuetoc.
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Affiliation(s)
- Dingxin Pan
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical ScienceKing's College LondonLondonUK
| | - Graham Ladds
- Department of PharmacologyUniversity of CambridgeCambridgeUK
| | - Khondaker Miraz Rahman
- Chemical Biology Group, Institute of Pharmaceutical ScienceKing's College LondonLondonUK
| | - Simon C. Pitchford
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical ScienceKing's College LondonLondonUK
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Arkless KL, Pan D, Shankar‐Hari M, Amison RT, Page CP, Rahman KM, Pitchford SC. Stimulation of platelet P2Y 1 receptors by different endogenous nucleotides leads to functional selectivity via biased signalling. Br J Pharmacol 2024; 181:564-579. [PMID: 36694432 PMCID: PMC10952403 DOI: 10.1111/bph.16039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 12/13/2022] [Accepted: 01/13/2023] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND AND PURPOSE Platelet function during inflammation is dependent on activation by endogenous nucleotides. Non-canonical signalling via the P2Y1 receptor is important for these non-thrombotic functions of platelets. However, apart from ADP, the role of other endogenous nucleotides acting as agonists at P2Y1 receptors is unknown. This study compared the effects of ADP, Ap3A, NAD+ , ADP-ribose, and Up4A on platelet functions contributing to inflammation or haemostasis. EXPERIMENTAL APPROACH Platelets obtained from healthy human volunteers were incubated with ADP, Ap3A, NAD+ , ADP-ribose, or Up4A, with aggregation and fibrinogen binding measured (examples of function during haemostasis) or before exposure to fMLP to measure platelet chemotaxis (an inflammatory function). In silico molecular docking of these nucleotides to the binding pocket of P2Y1 receptors was then assessed. KEY RESULTS Platelet aggregation and binding to fibrinogen induced by ADP was not mimicked by NAD+ , ADP-ribose, and Up4A. However, these endogenous nucleotides induced P2Y1 -dependent platelet chemotaxis, an effect that required RhoA and Rac-1 activity, but not canonical PLC activity. Analysis of molecular docking of the P2Y1 receptor revealed distinct differences of amino acid interactions and depth of fit within the binding pocket for Ap3A, NAD+ , ADP-ribose, or Up4A compared with ADP. CONCLUSION AND IMPLICATIONS Platelet function (aggregation vs motility) can be differentially modulated by biased-agonist activation of P2Y1 receptors. This may be due to the character of the ligand-binding pocket interaction. This has implications for future therapeutic strategies aimed to suppress platelet activation during inflammation without affecting haemostasis as is the requirement of current ant-platelet drugs. LINKED ARTICLES This article is part of a themed issue on Platelet purinergic receptor and non-thrombotic disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.4/issuetoc.
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Affiliation(s)
- Kate L. Arkless
- Sackler Institute of Pulmonary PharmacologyInstitute of Pharmaceutical Science, King's College LondonLondonUK
| | - Dingxin Pan
- Sackler Institute of Pulmonary PharmacologyInstitute of Pharmaceutical Science, King's College LondonLondonUK
| | - Manu Shankar‐Hari
- School of Immunology and Microbial SciencesKing's College LondonLondonUK
- Centre for Inflammation ResearchThe University of EdinburghEdinburghUK
| | - Richard T. Amison
- Sackler Institute of Pulmonary PharmacologyInstitute of Pharmaceutical Science, King's College LondonLondonUK
| | - Clive P. Page
- Sackler Institute of Pulmonary PharmacologyInstitute of Pharmaceutical Science, King's College LondonLondonUK
| | - Khondaker Miraz Rahman
- Chemical Biology Group, Institute of Pharmaceutical ScienceKing's College LondonLondonUK
| | - Simon C. Pitchford
- Sackler Institute of Pulmonary PharmacologyInstitute of Pharmaceutical Science, King's College LondonLondonUK
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3
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Li D, Abhadiomhen SE, Zhou D, Shen XJ, Shi L, Cui Y. Asthma prediction via affinity graph enhanced classifier: a machine learning approach based on routine blood biomarkers. J Transl Med 2024; 22:100. [PMID: 38268004 PMCID: PMC10809685 DOI: 10.1186/s12967-024-04866-9] [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: 10/14/2023] [Accepted: 01/06/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND Asthma is a chronic respiratory disease affecting millions of people worldwide, but early detection can be challenging due to the time-consuming nature of the traditional technique. Machine learning has shown great potential in the prompt prediction of asthma. However, because of the inherent complexity of asthma-related patterns, current models often fail to capture the correlation between data samples, limiting their accuracy. Our objective was to use our novel model to address the above problem via an Affinity Graph Enhanced Classifier (AGEC) to improve predictive accuracy. METHODS The clinical dataset used in this study consisted of 152 samples, where 24 routine blood markers were extracted as features to participate in the classification due to their ease of sourcing and relevance to asthma. Specifically, our model begins by constructing a projection matrix to reduce the dimensionality of the feature space while preserving the most discriminative features. Simultaneously, an affinity graph is learned through the resulting subspace to capture the internal relationship between samples better. Leveraging domain knowledge from the affinity graph, a new classifier (AGEC) is introduced for asthma prediction. AGEC's performance was compared with five state-of-the-art predictive models. RESULTS Experimental findings reveal the superior predictive capabilities of AGEC in asthma prediction. AGEC achieved an accuracy of 72.50%, surpassing FWAdaBoost (61.02%), MLFE (60.98%), SVR (64.01%), SVM (69.80%) and ERM (68.40%). These results provide evidence that capturing the correlation between samples can enhance the accuracy of asthma prediction. Moreover, the obtained [Formula: see text] values also suggest that the differences between our model and other models are statistically significant, and the effect of our model does not exist by chance. CONCLUSION As observed from the experimental results, advanced statistical machine learning approaches such as AGEC can enable accurate diagnosis of asthma. This finding holds promising implications for improving asthma management.
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Affiliation(s)
- Dejing Li
- Department of Respiratory, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, 214023, China
| | - Stanley Ebhohimhen Abhadiomhen
- School of Computer Science and Communication Engineering, JiangSu University, Zhenjiang, JiangSu, 212013, China
- Department of Computer Science, University of Nigeria, Nsukka, Nigeria
| | - Dongmei Zhou
- Clinical Research Center, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, 214023, China
| | - Xiang-Jun Shen
- School of Computer Science and Communication Engineering, JiangSu University, Zhenjiang, JiangSu, 212013, China
| | - Lei Shi
- Department of Clinical Laboratory, Shuguang Hospital Affiliated to Shanghai University of Chinese Traditional Medicine, Shanghai, 201203, China.
| | - Yubao Cui
- Clinical Research Center, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, 214023, China.
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4
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Foer D, Amin T, Nagai J, Tani Y, Feng C, Liu T, Newcomb DC, Lai J, Hayashi H, Snyder WE, McGill A, Lin A, Laidlaw T, Niswender KD, Boyce JA, Cahill KN. Glucagon-like Peptide-1 Receptor Pathway Attenuates Platelet Activation in Aspirin-Exacerbated Respiratory Disease. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1806-1813. [PMID: 37870292 PMCID: PMC10842986 DOI: 10.4049/jimmunol.2300102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 10/03/2023] [Indexed: 10/24/2023]
Abstract
Platelets are key contributors to allergic asthma and aspirin-exacerbated respiratory disease (AERD), an asthma phenotype involving platelet activation and IL-33-dependent mast cell activation. Human platelets express the glucagon-like peptide-1 receptor (GLP-1R). GLP-1R agonists decrease lung IL-33 release and airway hyperresponsiveness in mouse asthma models. We hypothesized that GLP-1R agonists reduce platelet activation and downstream platelet-mediated airway inflammation in AERD. GLP-1R expression on murine platelets was assessed using flow cytometry. We tested the effect of the GLP-1R agonist liraglutide on lysine-aspirin (Lys-ASA)-induced changes in airway resistance, and platelet-derived mediator release in a murine AERD model. We conducted a prospective cohort study comparing the effect of pretreatment with liraglutide or vehicle on thromboxane receptor agonist-induced in vitro activation of platelets from patients with AERD and nonasthmatic controls. GLP-1R expression was higher on murine platelets than on leukocytes. A single dose of liraglutide inhibited Lys-ASA-induced increases in airway resistance and decreased markers of platelet activation and recruitment to the lung in AERD-like mice. Liraglutide attenuated thromboxane receptor agonist-induced activation as measured by CXCL7 release in plasma from patients with AERD and CD62P expression in platelets from both patients with AERD (n = 31) and nonasthmatic, healthy controls (n = 11). Liraglutide, a Food and Drug Administration-approved GLP-1R agonist for treatment of type 2 diabetes and obesity, attenuates in vivo platelet activation in an AERD murine model and in vitro activation in human platelets in patients with and without AERD. These data advance the GLP-1R axis as a new target for platelet-mediated inflammation warranting further study in asthma.
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Affiliation(s)
- Dinah Foer
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Taneem Amin
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jun Nagai
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Yumi Tani
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - Chunli Feng
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Tao Liu
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Dawn C. Newcomb
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN
| | - Juying Lai
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - Hiroaki Hayashi
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - William E. Snyder
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alanna McGill
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - Anabel Lin
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Tanya Laidlaw
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Kevin D. Niswender
- Division of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- United States Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN
| | - Joshua A. Boyce
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Katherine N. Cahill
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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5
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Pan R, Ren Y, Li Q, Zhu X, Zhang J, Cui Y, Yin H. Neutrophil-lymphocyte ratios in blood to distinguish children with asthma exacerbation from healthy subjects. Int J Immunopathol Pharmacol 2023; 37:3946320221149849. [PMID: 36598755 PMCID: PMC9830092 DOI: 10.1177/03946320221149849] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE Airway inflammation is a prominent feature of asthma and may play an important role in disease pathophysiology. Despite the increasing incidence of asthma worldwide, reliable diagnostic biomarkers are lacking and widely lead to asthma misdiagnosis. Neutrophil-lymphocyte ratio (NLR) is a biomarker of systemic inflammation, in addition to NLR-alanine aminotransferase ratio (NAR) and NLR-albumin ratio (NBR). The aim of this study was to evaluate associations of NLR, NAR, and NBR with diagnosis of childhood asthma to determine if they can aid clinical childhood asthma diagnosis. METHODS This retrospective case-control study included 89 children with asthma and 53 healthy children from the Wuxi Children's Hospital affiliated with Nanjing Medical University. We applied various statistical tests to the dataset: Mann-Whitney U test to compare characteristics of the case and control groups; chi-squared test to compare categorical variables; Kruskal-Wallis test to compare statistical differences of asthma indicators among groups; receiver operating characteristic (ROC) curves to assess the diagnostic value of indices; and Spearman correlation analysis to evaluate relationships between NLR and lactate dehydrogenase, albumin, aspartate transaminase, and alanine transaminase levels. RESULTS Compared with controls, the asthma case group had significantly higher white blood cell (p < 0.01), neutrophil, lactate dehydrogenase, C-reactive protein, and NLR levels (p < 0.01) and significantly lower lymphocyte (p = 0.001), platelet (p = 0.039), and albumin levels (p = 0.04). We determined optimal cutoff levels for several metrics: 1.723 for NLR, with sensitivity of 0.73 and specificity of 0.906; 0.135 for NAR, with sensitivity of 0.685 and specificity of 0.887; and 0.045 for NBR, with sensitivity of 0.674 and specificity of 0.906. The areas under the curve (AUCs) were 0.824 for NLR, 0.788 for NAR, 0.818 for NBR, and 0.83 for the combination of NLR + NAR + NBR. CONCLUSION The combination of NLR, NAR, and NBR biomarkers distinguished asthmatic ones suffering from exacerbation of the condition from healthy children. Thus, our results indicate NLR + NAR + NBR could be used as a clinical biomarker for asthma in children.
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Affiliation(s)
- Ruilin Pan
- Clinical Research Center,
The Affiliated
Wuxi People’s Hospital of Nanjing Medical
University, Wuxi, China
| | - Yaning Ren
- Clinical Research Center,
The Affiliated
Wuxi People’s Hospital of Nanjing Medical
University, Wuxi, China
| | - Qingqing Li
- Clinical Research Center,
The Affiliated
Wuxi People’s Hospital of Nanjing Medical
University, Wuxi, China
| | - Xuming Zhu
- Department of Clinical Laboratory,
The Affiliated
Wuxi People’s Hospital of Nanjing Medical
University, Wuxi, China
| | - Jian Zhang
- Department of Clinical Laboratory,
The Wuxi
Children’s Hospital Affiliated to Nanjing Medical
University, Wuxi, China
| | - Yubao Cui
- Clinical Research Center,
The Affiliated
Wuxi People’s Hospital of Nanjing Medical
University, Wuxi, China
| | - Hao Yin
- Department of Clinical Laboratory,
The Affiliated
Wuxi People’s Hospital of Nanjing Medical
University, Wuxi, China,Hao Yin, Department of Clinical Laboratory,
The Wuxi People’s Hospital Affiliated of Nanjing Medical University, No. 299
Qingyang Road, Wuxi 214023, China.
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6
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Savin IA, Markov AV, Zenkova MA, Sen’kova AV. Asthma and Post-Asthmatic Fibrosis: A Search for New Promising Molecular Markers of Transition from Acute Inflammation to Pulmonary Fibrosis. Biomedicines 2022; 10:biomedicines10051017. [PMID: 35625754 PMCID: PMC9138542 DOI: 10.3390/biomedicines10051017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 12/15/2022] Open
Abstract
Asthma is a heterogeneous pulmonary disorder, the progression and chronization of which leads to airway remodeling and fibrogenesis. To understand the molecular mechanisms of pulmonary fibrosis development, key genes forming the asthma-specific regulome and involved in lung fibrosis formation were revealed using a comprehensive bioinformatics analysis. The bioinformatics data were validated using a murine model of ovalbumin (OVA)-induced asthma and post-asthmatic fibrosis. The performed analysis revealed a range of well-known pro-fibrotic markers (Cat, Ccl2, Ccl4, Ccr2, Col1a1, Cxcl12, Igf1, Muc5ac/Muc5b, Spp1, Timp1) and a set of novel genes (C3, C3ar1, Col4a1, Col4a2, Cyp2e1, Fn1, Thbs1, Tyrobp) mediating fibrotic changes in lungs already at the stage of acute/subacute asthma-driven inflammation. The validation of genes related to non-allergic bleomycin-induced pulmonary fibrosis on asthmatic/fibrotic lungs allowed us to identify new universal genes (Col4a1 and Col4a2) associated with the development of lung fibrosis regardless of its etiology. The similarities revealed in the expression profiles of nodal fibrotic genes between asthma-driven fibrosis in mice and nascent idiopathic pulmonary fibrosis in humans suggest a tight association of identified genes with the early stages of airway remodeling and can be considered as promising predictors and early markers of pulmonary fibrosis.
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Yue M, Hu M, Fu F, Ruan H, Wu C. Emerging Roles of Platelets in Allergic Asthma. Front Immunol 2022; 13:846055. [PMID: 35432313 PMCID: PMC9010873 DOI: 10.3389/fimmu.2022.846055] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 03/14/2022] [Indexed: 01/21/2023] Open
Abstract
Allergic asthma is a complex chronic inflammatory disease of the airways, driven by Th2 immune responses and characterized by eosinophilic pulmonary inflammation, airway hyperresponsiveness, excessive mucus production, and airway remodeling. Overwhelming evidence from studies in animal models and allergic asthmatic patients suggests that platelets are aberrantly activated and recruited to the lungs. It has been established that platelets can interact with other immune cells and secrete various biochemical mediators to promote allergic sensitization and airway inflammatory response, and platelet deficiency may alleviate the pathological features and symptoms of allergic asthma. However, the comprehensive roles of platelets in allergic asthma have not been fully clarified, leaving attempts to treat allergic asthma with antiplatelet agents questionable. In this review, we summarize the role of platelet activation and pulmonary accumulation in allergic asthma; emphasis is placed on the different interactions between platelets with crucial immune cell types and the contribution of platelet-derived mediators in this context. Furthermore, clinical antiplatelet approaches to treat allergic asthma are discussed. This review provides a clearer understanding of the roles of platelets in the pathogenesis of allergic asthma and could be informative in the development of novel strategies for the treatment of allergic asthma.
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Affiliation(s)
- Ming Yue
- Department of Physiology, College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Mengjiao Hu
- Department of Immunology and Microbiology, College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fangda Fu
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hongfeng Ruan
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- *Correspondence: Hongfeng Ruan,
| | - Chengliang Wu
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
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8
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Atypical Roles of the Chemokine Receptor ACKR3/CXCR7 in Platelet Pathophysiology. Cells 2022; 11:cells11020213. [PMID: 35053329 PMCID: PMC8773869 DOI: 10.3390/cells11020213] [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: 12/21/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 12/23/2022] Open
Abstract
The manifold actions of the pro-inflammatory and regenerative chemokine CXCL12/SDF-1α are executed through the canonical GProteinCoupledReceptor CXCR4, and the non-canonical ACKR3/CXCR7. Platelets express CXCR4, ACKR3/CXCR7, and are a vital source of CXCL12/SDF-1α themselves. In recent years, a regulatory impact of the CXCL12-CXCR4-CXCR7 axis on platelet biogenesis, i.e., megakaryopoiesis, thrombotic and thrombo-inflammatory actions have been revealed through experimental and clinical studies. Platelet surface expression of ACKR3/CXCR7 is significantly enhanced following myocardial infarction (MI) in acute coronary syndrome (ACS) patients, and is also associated with improved functional recovery and prognosis. The therapeutic implications of ACKR3/CXCR7 in myocardial regeneration and improved recovery following an ischemic episode, are well documented. Cardiomyocytes, cardiac-fibroblasts, endothelial lining of the blood vessels perfusing the heart, besides infiltrating platelets and monocytes, all express ACKR3/CXCR7. This review recapitulates ligand induced differential trafficking of platelet CXCR4-ACKR3/CXCR7 affecting their surface availability, and in regulating thrombo-inflammatory platelet functions and survival through CXCR4 or ACKR3/CXCR7. It emphasizes the pro-thrombotic influence of CXCL12/SDF-1α exerted through CXCR4, as opposed to the anti-thrombotic impact of ACKR3/CXCR7. Offering an innovative translational perspective, this review also discusses the advantages and challenges of utilizing ACKR3/CXCR7 as a potential anti-thrombotic strategy in platelet-associated cardiovascular disorders, particularly in coronary artery disease (CAD) patients post-MI.
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9
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Li J, Zhao M, Xiang X, He Q, Gui R. A novel biomimetic nanomedicine system with anti-inflammatory and anti-osteoporosis effects improves the therapy efficacy of steroid-resistant nephrotic syndrome. J Nanobiotechnology 2021; 19:417. [PMID: 34903236 PMCID: PMC8670287 DOI: 10.1186/s12951-021-01165-z] [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: 09/29/2021] [Accepted: 11/26/2021] [Indexed: 01/28/2023] Open
Abstract
Clinically, steroid-resistant nephrotic syndrome (SRNS) is always prolonged and difficult to treat and easily develops into end-stage renal disease, resulting in a low survival rate. Strategies to reverse steroid resistance and reduce the long-term use of high doses of steroid medicines are urgently needed. In this study, a novel nanoparticle drug system (Pm-GCH) with a core–shell structure was designed. Metal–organic frameworks, synthesized by glycyrrhizic acid (G) and calcium ions (Ca2+) loaded with hydrocortisone (H) were the core of the nanoparticles. Platelet membrane vesicles were the shells. The natural platelet membrane endows Pm-GCH with good biocompatibility and the ability to promote immune escape. In addition, under the chemotaxis of inflammatory factors, platelet membranes assist Pm-GCH in nonspecific targeting of the inflammatory sites of the kidney. Under an inflammatory acid environment, GCH slowly degrades and releases glycyrrhizic acid and hydrocortisone. Glycyrrhizic acid inhibits the inactivation of hydrocortisone, jointly inhibits the activity of phospholipase A2 (PLA2) and the classic activation pathway of complement C2, blocks the production of inflammatory factors, plays an anti-inflammatory role, and enhances the efficacy of hydrocortisone in the treatment of SRNS. Moreover, glycyrrhizic acid alleviates osteoporosis induced by long-term use of glucocorticoids. These results indicate that Pm-GCH is a promising treatment strategy for SRNS. ![]()
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Affiliation(s)
- Jian Li
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Mingyi Zhao
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Xinying Xiang
- School of Life Sciences, Central South University, Changsha, 410013, China
| | - Qingnan He
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China.
| | - Rong Gui
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, 410013, China.
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10
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Chebbo M, Duez C, Alessi MC, Chanez P, Gras D. Platelets: a potential role in chronic respiratory diseases? Eur Respir Rev 2021; 30:30/161/210062. [PMID: 34526315 PMCID: PMC9488457 DOI: 10.1183/16000617.0062-2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/05/2021] [Indexed: 12/21/2022] Open
Abstract
Platelets are small anucleate cells known for their role in haemostasis and thrombosis. In recent years, an increasing number of observations have suggested that platelets are also immune cells and key modulators of immunity. They express different receptors and molecules that allow them to respond to pathogens, and to interact with other immune cells. Platelets were linked to the pathogenesis of some inflammatory disorders including respiratory diseases such as asthma and idiopathic pulmonary fibrosis. Here, we discuss the involvement of platelets in different immune responses, and we focus on their potential role in various chronic lung diseases. In addition to their essential role in haemostasis and thrombosis, platelets are strong modulators of different immune responses, and could be involved in the physiopathology of several chronic airway diseaseshttps://bit.ly/3cB6Xnj
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Affiliation(s)
| | | | - Marie C Alessi
- Aix-Marseille Univ, INSERM, INRAE, Marseille, France.,APHM, CHU de la Timone, Laboratoire d'hématologie, Marseille, France
| | - Pascal Chanez
- Aix-Marseille Univ, INSERM, INRAE, Marseille, France.,APHM, Hôpital NORD, Clinique des Bronches, Allergie et Sommeil, Marseille, France
| | - Delphine Gras
- Aix-Marseille Univ, INSERM, INRAE, Marseille, France
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11
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Platelets, Not an Insignificant Player in Development of Allergic Asthma. Cells 2021; 10:cells10082038. [PMID: 34440807 PMCID: PMC8391764 DOI: 10.3390/cells10082038] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/26/2021] [Accepted: 08/06/2021] [Indexed: 12/16/2022] Open
Abstract
Allergic asthma is a chronic and heterogeneous pulmonary disease in which platelets can be activated in an IgE-mediated pathway and migrate to the airways via CCR3-dependent mechanism. Activated platelets secrete IL-33, Dkk-1, and 5-HT or overexpress CD40L on the cell surfaces to induce Type 2 immune response or interact with TSLP-stimulated myeloid DCs through the RANK-RANKL-dependent manner to tune the sensitization stage of allergic asthma. Additionally, platelets can mediate leukocyte infiltration into the lungs through P-selectin-mediated interaction with PSGL-1 and upregulate integrin expression in activated leukocytes. Platelets release myl9/12 protein to recruit CD4+CD69+ T cells to the inflammatory sites. Bronchoactive mediators, enzymes, and ROS released by platelets also contribute to the pathogenesis of allergic asthma. GM-CSF from platelets inhibits the eosinophil apoptosis, thus enhancing the chronic inflammatory response and tissue damage. Functional alterations in the mitochondria of platelets in allergic asthmatic lungs further confirm the role of platelets in the inflammation response. Given the extensive roles of platelets in allergic asthma, antiplatelet drugs have been tested in some allergic asthma patients. Therefore, elucidating the role of platelets in the pathogenesis of allergic asthma will provide us with new insights and lead to novel approaches in the treatment of this disease.
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Shah SA, Kanabar V, Riffo-Vasquez Y, Mohamed Z, Cleary SJ, Corrigan C, James AL, Elliot JG, Shute JK, Page CP, Pitchford SC. Platelets Independently Recruit into Asthmatic Lungs and Models of Allergic Inflammation via CCR3. Am J Respir Cell Mol Biol 2021; 64:557-568. [PMID: 33556295 PMCID: PMC8086046 DOI: 10.1165/rcmb.2020-0425oc] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Platelet activation and pulmonary recruitment occur in patients with asthma and in animal models of allergic asthma, in which leukocyte infiltration, airway remodeling, and hyperresponsiveness are suppressed by experimental platelet depletion. These observations suggest the importance of platelets to various characteristics of allergic disease, but the mechanisms of platelet migration and location are not understood. The aim of this study was to assess the mechanism of platelet recruitment to extravascular compartments of lungs from patients with asthma and after allergen challenge in mice sensitized to house dust mite (HDM) extract (contains the DerP1 [Dermatophagoides pteronyssinus extract peptidase 1] allergen); in addition, we assessed the role of chemokines in this process. Lung sections were immunohistochemically stained for CD42b+ platelets. Intravital microscopy in allergic mice was used to visualize platelets tagged with an anti-mouse CD49b-PE (phycoerythrin) antibody. Platelet-endothelial interactions were measured in response to HDM (DerP1) exposure in the presence of antagonists to CCR3, CCR4, and CXCR4. Extravascular CD42b+ platelets were detected in the epithelium and submucosa in bronchial biopsy specimens taken from subjects with steroid-naive mild asthma. Platelets were significantly raised in the lung parenchyma from patients with fatal asthma compared with postmortem control-lung tissue. Furthermore, in DerP1-sensitized mice, subsequent HDM exposure induced endothelial rolling, endothelial adhesion, and recruitment of platelets into airway walls, compared with sham-sensitized mice, via a CCR3-dependent mechanism in the absence of aggregation or interactions with leukocytes. Localization of singular, nonaggregated platelets occurs in lungs of patients with asthma. In allergic mice, platelet recruitment occurs via recognized vascular adhesive and migratory events, independently of leukocytes via a CCR3-dependent mechanism.
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Affiliation(s)
- Sajeel A Shah
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
| | - Varsha Kanabar
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
| | - Yanira Riffo-Vasquez
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
| | - Zainab Mohamed
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
| | - Simon J Cleary
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
| | - Christopher Corrigan
- MRC-Asthma UK Centre for Allergic Mechanisms in Asthma, Guy's Hospital-King's College London, London, United Kingdom
| | - Alan L James
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia; and
| | - John G Elliot
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia; and
| | - Janis K Shute
- Institute of Biomedical and Biomolecular Sciences, University of Portsmouth, Portsmouth, United Kingdom
| | - Clive P Page
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
| | - Simon C Pitchford
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, and
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Johansson MW. Seeing Is Believing: Extravascular Platelet Recruitment in Asthma and Allergic Inflammation. Am J Respir Cell Mol Biol 2021; 64:521-522. [PMID: 33705683 PMCID: PMC8086035 DOI: 10.1165/rcmb.2021-0045ed] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Mats W Johansson
- Morgridge Institute for Research Madison, Wisconsin and.,Departments of Biomolecular Chemistry and Medicine University of Wisconsin Madison, Wisconsin
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Carrington R, Jordan S, Wong YJ, Pitchford SC, Page CP. A novel murine model of pulmonary fibrosis: the role of platelets in chronic changes induced by bleomycin. J Pharmacol Toxicol Methods 2021; 109:107057. [PMID: 33819606 DOI: 10.1016/j.vascn.2021.107057] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/23/2021] [Accepted: 03/30/2021] [Indexed: 10/21/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a disease that causes scarring and destruction of lung tissue that is ultimately fatal. There is a need to develop improved treatments for IPF. One problem with identifying novel treatments of IPF is the poor predictability of current preclinical models. Few model investigate lung function changes, rather relying on histological changes which doesn't adequately reflect the complete clinical situation. The aim of this study was to establish a novel model of pulmonary fibrosis where we could investigate changes in lung function, and histology. We have also utilised this model to investigate the role of platelets in pulmonary fibrosis as platelets have been recognised as having a broader role than just facilitating haemostasis. Lung fibrosis was induced in male C57BL6/J mice by intranasal bleomycin on Days 0, 1, 2, 5, 6 and 7. Platelets were depleted by twice-weekly administration of anti-platelet antibodies. On Day 35 mice were assessed by examining lung function, platelet infiltration into lung tissues and bronchoalveolar lavage fluid (BAL), levels of BAL Tissue growth factor (TGF)-β levels, and the degree of fibrosis evaluated histologically. Repeated bleomycin administration caused loss of lung function associated with fibrosis assessed histologically. Platelet depletion resulted in a reduction in fibrosis and modest inhibition of lung function changes. We have established a novel model of pulmonary fibrosis that is associated with a decline in lung function similar to the clinical setting. Furthermore, platelet depletion resulted in a less severe fibrosis suggesting that targeting platelets maybe worth further investigation.
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Affiliation(s)
- R Carrington
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom; Department of Pharmacology, Covance Laboratories Ltd, Woolley Road, Alconbury, Huntingdon, Cambs PE28 4HS, United Kingdom.
| | - S Jordan
- Department of Pharmacology, Covance Laboratories Ltd, Woolley Road, Alconbury, Huntingdon, Cambs PE28 4HS, United Kingdom
| | - Y J Wong
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - S C Pitchford
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - C P Page
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
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Corlateanu A, Stratan I, Covantev S, Botnaru V, Corlateanu O, Siafakas N. Asthma and stroke: a narrative review. Asthma Res Pract 2021; 7:3. [PMID: 33608061 PMCID: PMC7896413 DOI: 10.1186/s40733-021-00069-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 02/04/2021] [Indexed: 02/08/2023] Open
Abstract
Asthma is a heterogeneous disease, usually characterized by chronic airway inflammation, bronchial reversible obstruction and hyperresponsiveness to direct or indirect stimuli. It is a severe disease causing approximately half a million deaths every year and thus possessing a significant public health burden. Stroke is the second leading cause of death and a major cause of disability worldwide. Asthma and asthma medications may be a risk factors for developing stroke. Nevertheless, since asthma is associated with a variety of comorbidities, such as cardiovascular, metabolic and respiratory, the increased incidence of stroke in asthma patients may be due to a confounding effect. The purpose of this review is to analyze the complex relationship between asthma and stroke.
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Affiliation(s)
- A. Corlateanu
- Department of Internal Medicine, Division of Pneumology and Allergology, Nicolae Testemitanu State University of Medicine and Pharmacy, Stefan cel Mare street 165, 2004 Chisinau, Republic of Moldova
| | - Iu Stratan
- Department of Internal Medicine, Division of Pneumology and Allergology, Nicolae Testemitanu State University of Medicine and Pharmacy, Stefan cel Mare street 165, 2004 Chisinau, Republic of Moldova
| | - S. Covantev
- Department of Internal Medicine, Division of Pneumology and Allergology, Nicolae Testemitanu State University of Medicine and Pharmacy, Stefan cel Mare street 165, 2004 Chisinau, Republic of Moldova
| | - V. Botnaru
- Department of Internal Medicine, Division of Pneumology and Allergology, Nicolae Testemitanu State University of Medicine and Pharmacy, Stefan cel Mare street 165, 2004 Chisinau, Republic of Moldova
| | - O. Corlateanu
- Department of Internal Medicine, Nicolae Testemitanu State University of Medicine and Pharmacy, Stefan cel Mare street 165, 2004 Chisinau, Republic of Moldova
| | - N. Siafakas
- Department of Thoracic Medicine, University General Hospital, Stavrakia, 71110 Heraklion, Crete, Greece
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Davizon‐Castillo P, Allawzi A, Sorrells M, Fisher S, Baltrunaite K, Neeves K, Nozik‐Grayck E, DiPaola J, Delaney C. Platelet activation in experimental murine neonatal pulmonary hypertension. Physiol Rep 2020; 8:e14386. [PMID: 32163236 PMCID: PMC7066872 DOI: 10.14814/phy2.14386] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 02/11/2020] [Indexed: 11/24/2022] Open
Abstract
Serotonin (5-HT) contributes to the pathogenesis of experimental neonatal pulmonary hypertension (PH) associated with bronchopulmonary dysplasia (BPD). Platelets are the primary source of circulating 5-HT and is released upon platelet activation. Platelet transfusions are associated with neonatal mortality and increased rates of BPD. As BPD is often complicated by PH, we tested the hypothesis that circulating platelets are activated and also increased in the lungs of neonatal mice with bleomycin-induced PH associated with BPD. Newborn wild-type mice received intraperitoneal bleomycin (3 units/kg) three times weekly for 3 weeks. Platelets from mice with experimental PH exhibited increased adhesion to collagen under flow (at 300 s-1 and 1,500 s-1 ) and increased expression of the αIIbβ3 integrin and phosphatidylserine, markers of platelet activation. Platelet-derived factors 5-HT and platelet factor 4 were increased in plasma from mice with experimental PH. Pharmacologic blockade of the 5-HT 2A receptor (5-HT 2A R) prevents bleomycin-induced PH and pulmonary vascular remodeling. Here, platelets from mice with bleomycin-induced PH demonstrate increased 5-HT 2A R expression providing further evidence of both platelet activation and increased 5-HT signaling in this model. In addition, bleomycin treatment increased lung platelet accumulation. In summary, platelets are activated, granule factors are released, and are increased in numbers in the lungs of mice with experimental neonatal PH. These results suggest platelet activation and release of platelet-derived factors may increase vascular tone, promote aberrant angiogenesis, and contribute to the development of neonatal PH.
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Affiliation(s)
- Pavel Davizon‐Castillo
- Section of Pediatric Hematology, Oncology, and Bone Marrow TransplantUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
| | - Ayed Allawzi
- Section of Pediatric Critical Care and Cardiovascular Pulmonary Research LaboratoryUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
| | - Matthew Sorrells
- Department of Chemical and Biological EngineeringColorado School of MinesGoldenCOUSA
| | - Susan Fisher
- Section of NeonatologyDepartment of PediatricsUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
| | - Kristina Baltrunaite
- Section of NeonatologyDepartment of PediatricsUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
| | - Keith Neeves
- Section of Pediatric Hematology, Oncology, and Bone Marrow TransplantUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
- Department of BioengineeringUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
| | - Eva Nozik‐Grayck
- Section of Pediatric Critical Care and Cardiovascular Pulmonary Research LaboratoryUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
| | - Jorge DiPaola
- Division of Pediatric Hematology OncologyWashington University in St. LouisSt. LouisMOUSA
| | - Cassidy Delaney
- Section of NeonatologyDepartment of PediatricsUniversity of Colorado Anschutz Medical CampusAuroraCOUSA
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Cangrelor alleviates bleomycin-induced pulmonary fibrosis by inhibiting platelet activation in mice. Mol Immunol 2020; 120:83-92. [PMID: 32106023 DOI: 10.1016/j.molimm.2020.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 01/15/2020] [Accepted: 01/24/2020] [Indexed: 12/14/2022]
Abstract
Pulmonary fibrosis is a progressive chronic inflammatory lung disease whose pathogenesis is complicated. Platelets and neutrophils play important roles in the progression of pulmonary inflammation. We have reported that cangrelor, a non-sepesific GPR17 antagonist, alleviates pulmonary fibrosis partly by inhibiting macrophage inflammation in mice. Cangrelor is also a well-known anti-platelet agent. To test whether cangrelor mitigated pulmonary fibrosis partly through the inhibition of platelets, bleomycin (BLM) was used to induce pulmonary fibrosis in C57BL/6 J mice. We found that cangrelor (10 mg/kg) not only significantly decreased BLM-induced release of inflammatory cytokines (PF4, CD40 L and MPO), but also decreased the increment of platelets, neutrophils and platelet-neutrophil aggregates in the fibrotic lung and in the peripheral blood of BLM-treated mice. In addition, cangrelor decreased the number of CD40 and MPO double positive neutrophils and the expression level of CD40 in BLM-treated mouse lungs. Based on these results we conclude that cangrelor alleviates BLM-induced lung inflammation and pulmonary fibrosis in mice, partly through inhibition of platelet activation, therefore reducing the infiltration of neutrophils due to the adhesion of platelets and neutrophils mediated by CD40 - CD40 L interaction. Cangrelor could be a potential therapeutic medicine for pulmonary fibrosis.
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Editorial overview: Emerging anti-inflammatory approaches for the treatment of respiratory diseases. Curr Opin Pharmacol 2019; 46:iii-v. [DOI: 10.1016/j.coph.2019.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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