1
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Thompson LJP, Genovese J, Hong Z, Singh MV, Singh VB. HIV-Associated Neurocognitive Disorder: A Look into Cellular and Molecular Pathology. Int J Mol Sci 2024; 25:4697. [PMID: 38731913 PMCID: PMC11083163 DOI: 10.3390/ijms25094697] [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: 03/25/2024] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Despite combined antiretroviral therapy (cART) limiting HIV replication to undetectable levels in the blood, people living with HIV continue to experience HIV-associated neurocognitive disorder (HAND). HAND is associated with neurocognitive impairment, including motor impairment, and memory loss. HIV has been detected in the brain within 8 days of estimated exposure and the mechanisms for this early entry are being actively studied. Once having entered into the central nervous system (CNS), HIV degrades the blood-brain barrier through the production of its gp120 and Tat proteins. These proteins are directly toxic to endothelial cells and neurons, and propagate inflammatory cytokines by the activation of immune cells and dysregulation of tight junction proteins. The BBB breakdown is associated with the progression of neurocognitive disease. One of the main hurdles for treatment for HAND is the latent pool of cells, which are insensitive to cART and prolong inflammation by harboring the provirus in long-lived cells that can reactivate, causing damage. Multiple strategies are being studied to combat the latent pool and HAND; however, clinically, these approaches have been insufficient and require further revisions. The goal of this paper is to aggregate the known mechanisms and challenges associated with HAND.
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Affiliation(s)
| | - Jessica Genovese
- Department of Life Sciences, Albany College of Pharmacy and Health Sciences, Albany, NY 12208, USA
| | - Zhenzi Hong
- Department of Life Sciences, Albany College of Pharmacy and Health Sciences, Albany, NY 12208, USA
| | - Meera Vir Singh
- Department of Neurology, University of Rochester, Rochester, NY 14642, USA
| | - Vir Bahadur Singh
- Department of Life Sciences, Albany College of Pharmacy and Health Sciences, Albany, NY 12208, USA
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2
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Parker WAE, Storey RF. The role of platelet P2Y 12 receptors in inflammation. Br J Pharmacol 2024; 181:515-531. [PMID: 37771103 DOI: 10.1111/bph.16256] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 08/15/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023] Open
Abstract
Inflammation is a complex pathophysiological process underlying many clinical conditions. Platelets contribute to the thrombo-inflammatory response. Platelet P2Y12 receptors amplify platelet activation, potentiating platelet aggregation, degranulation and shape change. The contents of platelet alpha granules, in particular, act directly on leucocytes, including mediating platelet-leucocyte aggregation and activation via platelet P-selectin. Much evidence for the role of platelet P2Y12 receptors in inflammation comes from studies using antagonists of these receptors, such as the thienopyridines clopidogrel and prasugrel, and the cyclopentyltriazolopyrimidine ticagrelor, in animal and human experimental models. These suggest that antagonism of P2Y12 receptors decreases markers of inflammation with some evidence that this reduces incidence of adverse clinical sequelae during inflammatory conditions. Interpretation is complicated by pleiotropic effects such as those of the thienopyridines on circulating leucocyte numbers and of ticagrelor on adenosine reuptake. The available evidence suggests that P2Y12 receptors are prominent mediators of inflammation and P2Y12 receptor antagonism as a potentially powerful strategy in a broad range of inflammatory conditions. 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)
- William A E Parker
- Cardiovascular Research Unit, Division of Clinical Medicine, University of Sheffield, Sheffield, UK
- NIHR Sheffield Biomedical Research Centre, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Robert F Storey
- Cardiovascular Research Unit, Division of Clinical Medicine, University of Sheffield, Sheffield, UK
- NIHR Sheffield Biomedical Research Centre, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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3
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Ghosh LD, Jain A. The prospects of microphysiological systems in modeling platelet pathophysiology in cancer. Platelets 2023; 34:2247489. [PMID: 37610007 PMCID: PMC10578702 DOI: 10.1080/09537104.2023.2247489] [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: 04/06/2023] [Revised: 07/10/2023] [Accepted: 08/02/2023] [Indexed: 08/24/2023]
Abstract
The contribution of platelets is well recognized in thrombosis and hemostasis. However, platelets also promote tumor progression and metastasis through their crosstalk with various cells of the tumor microenvironment (TME). For example, several cancer models continue to show that platelet functions are readily altered by cancer cells upon activation leading to the formation of platelet-tumor aggregates, triggering release of soluble factors from platelet granules and altering platelet turnover. Further, activated platelets protect tumor cells from shear forces in circulation and assault of cytotoxic natural killer (NK) cells. Platelet-secreted factors promote proliferation of malignant cells, metastasis, and chemoresistance. Much of our knowledge of platelet biology in cancer has been achieved with animal models, particularly murine. However, this preclinical understanding of the complex pathophysiology is yet to be fully realized and translated to clinical trials in terms of new approaches to treat cancer via controlling the platelet function. In this review, we summarize the current state of knowledge of platelet physiology obtained through existing in vivo and in vitro cancer models, the complex interactions of platelets with cancer cells in TME and the pathways by which platelets may confer chemoresistance. Since the FDA Modernization Act recently passed by the US government has made animal models optional in drug approvals, we critically examine the existing and futuristic value of employing bioengineered microphysiological systems and organ-chips to understand the mechanistic role of platelets in cancer metastasis and exploring novel therapeutic targets for cancer prevention and treatment.
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Affiliation(s)
- Lopamudra D. Ghosh
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas, USA
| | - Abhishek Jain
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas, USA
- Department of Medical Physiology, School of Medicine, Texas A&M Health Science Center, Bryan, Texas, USA
- Department of Cardiovascular Sciences, Houston Methodist Academic Institute, Houston, Texas, USA
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4
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Carestia A, Godin LC, Jenne CN. Step up to the platelet: Role of platelets in inflammation and infection. Thromb Res 2023; 231:182-194. [PMID: 36307228 DOI: 10.1016/j.thromres.2022.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/28/2022] [Accepted: 10/03/2022] [Indexed: 11/18/2022]
Abstract
Platelets are anucleated cells derived from megakaryocytes that are primarily responsible for hemostasis. However, in recent years, these cytoplasts have become increasingly recognized as immune cells, able to detect, interact with, and kill pathogens. As platelets are involved in both immunity and coagulation, they have a central role in immunothrombosis, a physiological process in which immune cells induce the formation of microthrombi to both prevent the spread of pathogens, and to help facilitate clearance. In this review, we will highlight the role of platelets as key players in the inflammatory and innate immune response against bacterial and viral infection, including direct and indirect interactions with pathogens and other immune cells.
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Affiliation(s)
- Agostina Carestia
- Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Canada.
| | - Laura C Godin
- Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Canada.
| | - Craig N Jenne
- Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Canada.
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5
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Kocatürk B, Lee Y, Nosaka N, Abe M, Martinon D, Lane ME, Moreira D, Chen S, Fishbein MC, Porritt RA, Franklin BS, Noval Rivas M, Arditi M. Platelets exacerbate cardiovascular inflammation in a murine model of Kawasaki disease vasculitis. JCI Insight 2023; 8:e169855. [PMID: 37279077 PMCID: PMC10443810 DOI: 10.1172/jci.insight.169855] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/31/2023] [Indexed: 06/07/2023] Open
Abstract
Kawasaki disease (KD) is the leading cause of acquired heart disease among children. Increased platelet counts and activation are observed during the course of KD, and elevated platelet counts are associated with higher risks of developing intravenous immunoglobulin resistance and coronary artery aneurysms. However, the role of platelets in KD pathogenesis remains unclear. Here, we analyzed transcriptomics data generated from the whole blood of patients with KD and discovered changes in the expression of platelet-related genes during acute KD. In the Lactobacillus casei cell wall extract (LCWE) murine model of KD vasculitis, LCWE injection increased platelet counts and the formation of monocyte-platelet aggregates (MPAs), upregulated the concentration of soluble P-selectin, and increased circulating thrombopoietin and interleukin 6 (IL-6). Furthermore, platelet counts correlated with the severity of cardiovascular inflammation. Genetic depletion of platelets (Mpl-/- mice) or treatment with an anti-CD42b antibody significantly reduced LCWE-induced cardiovascular lesions. Furthermore, in the mouse model, platelets promoted vascular inflammation via the formation of MPAs, which likely amplified IL-1B production. Altogether, our results indicate that platelet activation exacerbates the development of cardiovascular lesions in a murine model of KD vasculitis. These findings enhance our understanding of KD vasculitis pathogenesis and highlight MPAs, which are known to enhance IL-1B production, as a potential therapeutic target for this disorder.
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Affiliation(s)
- Begüm Kocatürk
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Youngho Lee
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Nobuyuki Nosaka
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Masanori Abe
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Daisy Martinon
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Malcolm E. Lane
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Debbie Moreira
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Shuang Chen
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Michael C. Fishbein
- Department of Pathology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Rebecca A. Porritt
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Bernardo S. Franklin
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Magali Noval Rivas
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Moshe Arditi
- Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children’s at Cedars-Sinai Medical Center, Los Angeles, California, USA
- Infectious and Immunologic Diseases Research Center (IIDRC), Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
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6
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Han Z, Liu Q, Li H, Zhang M, You L, Lin Y, Wang K, Gou Q, Wang Z, Zhou S, Cai Y, Yuan L, Chen H. The role of monocytes in thrombotic diseases: a review. Front Cardiovasc Med 2023; 10:1113827. [PMID: 37332592 PMCID: PMC10272466 DOI: 10.3389/fcvm.2023.1113827] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 05/18/2023] [Indexed: 06/20/2023] Open
Abstract
Cardiovascular and cerebrovascular diseases are the number one killer threatening people's life and health, among which cardiovascular thrombotic events are the most common. As the cause of particularly serious cardiovascular events, thrombosis can trigger fatal crises such as acute coronary syndrome (myocardial infarction and unstable angina), cerebral infarction and so on. Circulating monocytes are an important part of innate immunity. Their main physiological functions are phagocytosis, removal of injured and senescent cells and their debris, and development into macrophages and dendritic cells. At the same time, they also participate in the pathophysiological processes of pro-coagulation and anticoagulation. According to recent studies, monocytes have been found to play a significant role in thrombosis and thrombotic diseases of the immune system. In this manuscript, we review the relationship between monocyte subsets and cardiovascular thrombotic events and analyze the role of monocytes in arterial thrombosis and their involvement in intravenous thrombolysis. Finally, we summarize the mechanism and therapeutic regimen of monocyte and thrombosis in hypertension, antiphospholipid syndrome, atherosclerosis, rheumatic heart disease, lower extremity deep venous thrombosis, and diabetic nephropathy.
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Affiliation(s)
- Zhongyu Han
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qiong Liu
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hongpeng Li
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Meiqi Zhang
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Luling You
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yumeng Lin
- Eye School of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ke Wang
- Eye School of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qiaoyin Gou
- Eye School of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhanzhan Wang
- Lianyungang Clinical College of Nanjing Medical University, Lianyungang, China
| | - Shuwei Zhou
- Department of Radiology, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - YiJin Cai
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lan Yuan
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Haoran Chen
- Science and Education Department, Chengdu Xinhua Hospital, Chengdu, China
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7
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Trivigno SMG, Guidetti GF, Barbieri SS, Zarà M. Blood Platelets in Infection: The Multiple Roles of the Platelet Signalling Machinery. Int J Mol Sci 2023; 24:ijms24087462. [PMID: 37108623 PMCID: PMC10138547 DOI: 10.3390/ijms24087462] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Platelets are classically recognized for their important role in hemostasis and thrombosis but they are also involved in many other physiological and pathophysiological processes, including infection. Platelets are among the first cells recruited to sites of inflammation and infection and they exert their antimicrobial response actively cooperating with the immune system. This review aims to summarize the current knowledge on platelet receptor interaction with different types of pathogens and the consequent modulations of innate and adaptive immune responses.
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Affiliation(s)
- Silvia M G Trivigno
- Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy
- University School for Advanced Studies, IUSS, 27100 Pavia, Italy
| | | | - Silvia Stella Barbieri
- Unit of Heart-Brain Axis: Cellular and Molecular Mechanisms, Centro Cardiologico Monzino IRCCS, 20138 Milano, Italy
| | - Marta Zarà
- Unit of Heart-Brain Axis: Cellular and Molecular Mechanisms, Centro Cardiologico Monzino IRCCS, 20138 Milano, Italy
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8
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Jiang SZ, To JL, Hughes MR, McNagny KM, Kim H. Platelet signaling at the nexus of innate immunity and rheumatoid arthritis. Front Immunol 2022; 13:977828. [PMID: 36505402 PMCID: PMC9732516 DOI: 10.3389/fimmu.2022.977828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 10/03/2022] [Indexed: 11/26/2022] Open
Abstract
Rheumatoid arthritis (RA) is a debilitating autoimmune disorder characterized by chronic inflammation of the synovial tissues and progressive destruction of bone and cartilage. The inflammatory response and subsequent tissue degradation are orchestrated by complex signaling networks between immune cells and their products in the blood, vascular endothelia and the connective tissue cells residing in the joints. Platelets are recognized as immune-competent cells with an important role in chronic inflammatory diseases such as RA. Here we review the specific aspects of platelet function relevant to arthritic disease, including current knowledge of the molecular crosstalk between platelets and other innate immune cells that modulate RA pathogenesis.
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Affiliation(s)
- Steven Z. Jiang
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada,Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
| | - Jeffrey L. To
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada,Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
| | - Michael R. Hughes
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada,School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Kelly M. McNagny
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada,School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada,Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Hugh Kim
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada,Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada,Department of Oral Biological and Medical Sciences, University of British Columbia, Vancouver, BC, Canada,*Correspondence: Hugh Kim,
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9
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Jiang L, Xu C, Zhao Y, Huang Q, Yuan W, Wu Y, Fei X. Papain ameliorates monocyte-platelet aggregate formation-mediated inflammatory responses in monocytes by upregulating miRNA-146a transcription. PLoS One 2022; 17:e0278059. [PMID: 36409752 PMCID: PMC9678272 DOI: 10.1371/journal.pone.0278059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/09/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND MicroRNA-146a (miRNA-146a) is a nuclear factor κB (NF-κB)-inducible and inflammation-sensitive miRNA, while papain elicits anti-inflammatory effects by inhibiting monocyte-platelet aggregate (MPA)-mediated NF-κB pathway activation in monocytes. This study aimed to demonstrate the underlying effects of papain on MPA formation-initiated miRNA-146a expression and subsequent action in monocytes. METHODS THP-1 cells were exposed to papain, miRNA-146a mimic and inhibitor, NF-κB inhibitor (BAY11-7082), and platelets. Flow cytometry was used to measure the MPA formation-initiated monocyte activation. Levels of miRNA-146a, cyclooxygenase 2 (COX-2) mRNA and protein, and monocyte chemoattractant protein 1 (MCP-1) were analyzed in monocytes by RT-PCR, western blot, and ELISA. RESULTS The NF-κB inhibitor and miRNA-146a mimics upregulated miRNA-146a expression but suppressed subsequent monocyte activation and expression of COX-2 and MCP-1. Following exposure to papain, the enhanced miRNA-146a transcription induced by MPA-formation was found along with significant inhibition of monocyte activation in a dose-dependent manner. However, the inhibitory tendency was significantly reversed by miRNA-146a inhibitors. Expression of COX-2 mRNA and protein, as well as MCP-1, was inhibited in monocytes by papain, whereas miRNA-146a inhibitors promoted COX-2 and MCP-1 expression. CONCLUSION Our findings suggest that papain can inhibit MPA formation-mediated expression of inflammatory mediators in activated monocytes by upregulating miRNA-146a transcription.
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Affiliation(s)
- Lei Jiang
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Chan Xu
- Department of Laboratory Medicine, Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yan Zhao
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Qinghua Huang
- Geriatric Medicine Center, Department of Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Wufeng Yuan
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yan Wu
- Department of Laboratory Medicine, Lin’an First People’s Hospital of Hangzhou, Hangzhou, Zhejiang, China
| | - Xianming Fei
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
- * E-mail:
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10
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Castell N, Guerrero-Martin SM, Rubin LH, Shirk EN, Brockhurst JK, Lyons CE, Najarro KM, Queen SE, Carlson BW, Adams RJ, Morrell CN, Gama L, Graham DR, Zink C, Mankowski JL, Clements JE, Metcalf Pate KA. Effect of Single Housing on Innate Immune Activation in Immunodeficiency Virus-Infected Pigtail Macaques ( Macaca nemestrina ) as a Model of Psychosocial Stress in Acute HIV Infection. Psychosom Med 2022; 84:966-975. [PMID: 36162063 PMCID: PMC9553260 DOI: 10.1097/psy.0000000000001132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 07/27/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Simian immunodeficiency virus (SIV) infection of macaques recapitulates many aspects of HIV pathogenesis and is similarly affected by both genetic and environmental factors. Psychosocial stress is associated with immune system dysregulation and worse clinical outcomes in people with HIV. This study assessed the impact of single housing, as a model of psychosocial stress, on innate immune responses of pigtailed macaques ( Macaca nemestrina ) during acute SIV infection. METHODS A retrospective analysis of acute SIV infection of 2- to si6-year-old male pigtailed macaques was performed to compare the innate immune responses of socially ( n = 41) and singly ( n = 35) housed animals. Measures included absolute monocyte count and subsets, and in a subset ( n ≤ 18) platelet counts and activation data. RESULTS SIV infection resulted in the expected innate immune parameter changes with a modulating effect from housing condition. Monocyte number increased after infection for both groups, driven by classical monocytes (CD14 + CD16 - ), with a greater increase in socially housed animals (227%, p < .001, by day 14 compared with preinoculation time points). Platelet numbers recovered more quickly in the socially housed animals. Platelet activation (P-selectin) increased by 65% ( p = .004) and major histocompatibility complex class I surface expression by 40% ( p = .009) from preinoculation only in socially housed animals, whereas no change in these measures occurred in singly housed animals. CONCLUSIONS Chronic psychosocial stress produced by single housing may play an immunomodulatory role in the innate immune response to acute retroviral infection. Dysregulated innate immunity could be one of the pathways by which psychosocial stress contributes to immune suppression and increased disease severity in people with HIV.
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11
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Increase of Circulating Monocyte-Platelet Conjugates in Rheumatoid Arthritis Responders to IL-6 Blockage. Int J Mol Sci 2022; 23:ijms23105748. [PMID: 35628558 PMCID: PMC9144642 DOI: 10.3390/ijms23105748] [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: 04/07/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 02/01/2023] Open
Abstract
Platelets (PLT) bind to a significant percentage of circulating monocytes and this immunomodulatory interaction is increased in several inflammatory and autoimmune conditions. The therapeutic blockage of IL-6 with Tocilizumab (TCZ) alters PLT and the phenotype and function of monocytes in rheumatoid arthritis (RA). However, the relationship between monocyte−PLT conjugates (CD14+PLT+) and clinical and immunological variables and the regulation of this interaction by IL-6 blockage are still unknown. Here, we compared the presence of monocyte−PLT conjugates (CD14+PLT+) and membrane CD162 expression using flow cytometry, and, by ELISA, the markers of PLT activation (sCD62P and sCD40L) in healthy donors (HD) and patients with long-standing RA before TCZ (baseline). We found higher percentages and absolute counts of CD14+PLT+, and higher plasmatic levels of sCD62P and sCD40L but lower CD162 expression on monocytes from RA patients than those from HD. Additionally, the levels of CD14+PLT+ inversely correlated with inflammatory parameters. Interestingly, 95% of patients with lower percentages of CD14+PLT+ and only 63% of patients with higher percentages of CD14+PLT+ achieved a EULAR-defined response at four weeks (p = 0.036). After TCZ, the percentage of CD14+PLT+ increased in 92% of RA patients who achieved 12 w-remission (p < 0.001). Our results suggest that the binding of PLTs has a modulatory effect, accentuated by the increased binding of PLTs to monocytes in response to the therapeutic blockage of IL-6.
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12
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Nording H, Sauter M, Lin C, Steubing R, Geisler S, Sun Y, Niethammer J, Emschermann F, Wang Y, Zieger B, Nieswandt B, Kleinschnitz C, Simon DI, Langer HF. Activated Platelets Upregulate β 2 Integrin Mac-1 (CD11b/CD18) on Dendritic Cells, Which Mediates Heterotypic Cell-Cell Interaction. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:1729-1741. [PMID: 35277420 DOI: 10.4049/jimmunol.2100557] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 01/11/2022] [Indexed: 12/30/2022]
Abstract
Recent evidence suggests interaction of platelets with dendritic cells (DCs), while the molecular mechanisms mediating this heterotypic cell cross-talk are largely unknown. We evaluated the role of integrin Mac-1 (αMβ2, CD11b/CD18) on DCs as a counterreceptor for platelet glycoprotein (GP) Ibα. In a dynamic coincubation model, we observed interaction of human platelets with monocyte-derived DCs, but also that platelet activation induced a sharp increase in heterotypic cell binding. Inhibition of CD11b or GPIbα led to significant reduction of DC adhesion to platelets in vitro independent of GPIIbIIIa, which we confirmed using platelets from Glanzmann thrombasthenia patients and transgenic mouse lines on C57BL/6 background (GPIbα-/-, IL4R-GPIbα-tg, and muMac1 mice). In vivo, inhibition or genetic deletion of CD11b and GPIbα induced a significant reduction of platelet-mediated DC adhesion to the injured arterial wall. Interestingly, only intravascular antiCD11b inhibited DC recruitment, suggesting a dynamic DC-platelet interaction. Indeed, we could show that activated platelets induced CD11b upregulation on Mg2+-preactivated DCs, which was related to protein kinase B (Akt) and dependent on P-selectin and P-selectin glycoprotein ligand 1. Importantly, specific pharmacological targeting of the GPIbα-Mac-1 interaction site blocked DC-platelet interaction in vitro and in vivo. These results demonstrate that cross-talk of platelets with DCs is mediated by GPIbα and Mac-1, which is upregulated on DCs by activated platelets in a P-selectin glycoprotein ligand 1-dependent manner.
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Affiliation(s)
- Henry Nording
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany.,German Research Centre for Cardiovascular Research, Partner Site Hamburg/Lübeck/Kiel, Lübeck, Germany.,University Hospital, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Manuela Sauter
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany.,University Hospital, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Chaolan Lin
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Rebecca Steubing
- Department of Neurology and Center for Translational and Behavioral Neurosciences, University Hospital Essen, Essen, Germany
| | - Sven Geisler
- Cell Analysis Core Facility, University of Lübeck, Lübeck, Germany
| | - Ying Sun
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Joel Niethammer
- Department of Pediatric Surgery and Pediatric Urology, University Children's Hospital Tübingen, Tübingen, Germany
| | - Fréderic Emschermann
- Department of Cardiovascular Medicine, University Hospital, Eberhard Karls University, Tübingen, Germany
| | - Yunmei Wang
- Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine and Harrington Heart & Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH
| | - Barbara Zieger
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Bernhard Nieswandt
- Institute of Experimental Biomedicine, University Hospital and Rudolf Virchow Center, University of Würzburg, Würzburg, Germany; and
| | - Christoph Kleinschnitz
- Department of Neurology and Center for Translational and Behavioral Neurosciences, University Hospital Essen, Essen, Germany
| | - Daniel I Simon
- Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine and Harrington Heart & Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH.,University Hospitals Cleveland Medical Center, Cleveland, OH
| | - Harald F Langer
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany; .,German Research Centre for Cardiovascular Research, Partner Site Hamburg/Lübeck/Kiel, Lübeck, Germany.,University Hospital, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
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13
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Characterization of cerebral small vessel disease by neutrophil and platelet activation markers using artificial intelligence. J Neuroimmunol 2022; 367:577863. [DOI: 10.1016/j.jneuroim.2022.577863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/17/2022] [Accepted: 04/05/2022] [Indexed: 11/23/2022]
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14
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Al-Kindi S, Zidar DA. COVID-lateral damage: cardiovascular manifestations of SARS-CoV-2 infection. Transl Res 2022; 241:25-40. [PMID: 34780967 PMCID: PMC8588575 DOI: 10.1016/j.trsl.2021.11.005] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 02/07/2023]
Abstract
Early in the pandemic, concern that cardiovascular effects would accompany COVID-19 was fueled by lessons from the first SARS epidemic, knowledge that the SARS-COV2 entry receptor (Angiotensin-converting enzyme 2, ACE2) is highly expressed in the heart, early reports of myocarditis, and first-hand accounts by physicians caring for those with severe COVID-19. Over 18 months, our understanding of the cardiovascular manifestations has expanded greatly, leaving more new questions than those conclusively answered. Cardiac involvement is common (∼20%) but not uniformly observed in those who require treatment in a hospitalized setting. Cardiac MRI studies raise the possibility of manifestations in those with minimal symptoms. Some appear to experience protracted cardiovascular symptoms as part of a larger syndrome of post-acute sequelae of COVID-19. Instances of vaccine induced thrombosis and myocarditis are exceedingly rare but illustrate the need to monitor the cardiovascular safety of interventions that induce inflammation. Here, we will summarize the current understanding of potential cardiovascular manifestations of SARS-COV2. To provide proper context, paradigms of cardiovascular injury due to other inflammatory processes will also be discussed. Ongoing research and a deeper understanding COVID-19 may ultimately reveal new insight into the mechanistic underpinnings of cardiovascular disease. Thus, in this time of unprecedented suffering and risk to global health, there exists the opportunity that well conducted translational research of SARS-COV2 may provide health dividends that outlast the current pandemic.
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Key Words
- ace2, angiotensin-converting enzyme 2
- pasc, post-acute sequelae of covid-19
- cvd, cardiovascular disease
- tnf, tumor necrosis factor
- pamp, pathogen associated molecular patterns
- damps, damage associated molecular patterns
- car-t, chimeric antigen receptor therapy
- dvt, deep venous thrombosis
- tf, tissue factor
- psgl, p-selectin glycoprotein ligand
- nets, neutrophil extracellular traps
- lv, left ventricular
- crp, c-reactive protein
- lge, late gadolinium enhancement
- cbv, coxsackie virus b
- b19v, parvovirus b12
- car, coxsackievirus and adenovirus receptor
- ns1, nonstructural protein 1
- ec, endothelial cells
- scrnaseq, single cell rna sequencing
- embx, endomyocardial biopsy
- tte, transthoracic echocardiograms
- rv, right ventricular
- gls, global longitudinal strain
- hscrp, high sensitivity c-reative protein
- vitt, vaccine-induced immune thrombotic thrombocytopenia
- dtap, diphtheria, tetanus, and polio
- vaers, vaccine adverse event reporting system
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Affiliation(s)
- Sadeer Al-Kindi
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, Ohio; Harrington Heart and Vascular Institute, University Hospitals, Cleveland, Ohio
| | - David A Zidar
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, Ohio; Harrington Heart and Vascular Institute, University Hospitals, Cleveland, Ohio; Louis Stokes VA Medical Center, Cleveland, Ohio.
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15
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Johny E, Bhaskar P, Alam MJ, Kuladhipati I, Das R, Adela R. Platelet Mediated Inflammation in Coronary Artery Disease with Type 2 Diabetes Patients. J Inflamm Res 2021; 14:5131-5147. [PMID: 34675593 PMCID: PMC8504552 DOI: 10.2147/jir.s326716] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/19/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is a well-established risk factor for the development of atherosclerotic coronary artery disease. Platelet hyperactivity and inflammation are associated with the development of coronary artery disease (CAD) in T2DM patients. We investigated the status of immune cells, platelet activation, and platelet-immune cell interactions in T2DM_CAD patients. METHODOLOGY The study population consisted of four groups of subjects, healthy control (CT, n = 20), T2DM (n = 44), CAD (n = 20) and T2DM_CAD (n = 38). Platelet activation, immunome profiling and platelet-immune cell interactions were analysed by flow cytometry. The circulatory levels of inflammatory cytokines/chemokines were assessed using multiplex assay. RESULTS Increased platelet activation and increased platelet-immune cell aggregate formation were observed in T2DM and T2DM_CAD groups compared to the control and CAD groups (p < 0.05). Our immunome profile analysis revealed, altered monocyte subpopulations and dendritic cell populations in T2DM, CAD and T2DM_CAD groups compared to the control group (p < 0.05). Furthermore, significantly increased IL-1β, IL-2, IL-4, IL-6, IL-8, IL12p70, IL-13 IL-18, CCL2, and decreased CXCL1, CCL5 levels were observed in T2DM_CAD group compared to the control group. Our ex-vivo study increased platelet-monocyte aggregate formation was observed upon D-glucose exposure in a time and concentration dependent manner. CONCLUSION Our data suggests that T2DM, CAD and T2DM_CAD are associated with altered immune cell populations. Furthermore, it has been confirmed that hyperglycemia induces platelet activation and forms platelet-immune cell aggregation which may lead to the release of inflammatory cytokines and chemokines and contribute to the complexity of CAD and type 2 diabetes.
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Affiliation(s)
- Ebin Johny
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Guwahati, Assam, 781101, India
| | - Pathoori Bhaskar
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Guwahati, Assam, 781101, India
| | - Md Jahangir Alam
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Guwahati, Assam, 781101, India
| | | | - Rupam Das
- Down Town Hospital, Guwahati, Assam, 781006, India
| | - Ramu Adela
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Guwahati, Assam, 781101, India
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16
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P 2Y 12 receptor blockers are anti-inflammatory drugs inhibiting both circulating monocytes and macrophages including THP-1 cells. Sci Rep 2021; 11:17459. [PMID: 34465804 PMCID: PMC8408182 DOI: 10.1038/s41598-021-95710-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 07/22/2021] [Indexed: 01/11/2023] Open
Abstract
P2Y12 blockade improves patient outcomes after myocardial infarction. As well as antithrombotic effects, anti-inflammatory effects may contribute to this beneficial clinical outcome. Here we aimed to identify potential anti-inflammatory effects of P2Y12 receptor blockers on monocytes and macrophages. Using flow cytometry, migration assays, flow chambers and RNA microarrays, we investigated the effects of adenosine diphosphate (ADP) and P2Y12 receptor blockers on blood monocytes, THP-1 monocytes and THP-1 monocytes after differentiation to macrophages. P2Y12 -expressing platelets can form aggregates with monocytes in circulating blood. Mediated by platelets, ADP results in activation of the integrin receptor Mac-1 on blood monocytes, as detected by the conformation-specific single-chain antibody MAN-1. Via the same association with platelets, THP-1 monocyte adhesion to the endothelial intercellular adhesion molecule 1 (ICAM-1) is induced by ADP. P2Y12 receptor blockers prevent these ADP effects on monocytes. Interestingly, in contrast to THP-1 monocytes, THP-1 monocytes, after differentiation to macrophages, directly expressed the P2Y12 receptor and consequently ADP was found to be a potent chemoattractant. Again, P2Y12 receptor blockers antagonised this effect. Accordingly, stimulation of THP-1 macrophages with ADP caused a substantial change in gene expression pattern and upregulation of several genes associated with inflammation and atherogenesis. These data establish novel anti-inflammatory effects of P2Y12 receptor blockers on monocytes and macrophages, which are expected to contribute to cardiovascular risk reduction.
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17
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Kirwan DE, Chong DLW, Friedland JS. Platelet Activation and the Immune Response to Tuberculosis. Front Immunol 2021; 12:631696. [PMID: 34093524 PMCID: PMC8170316 DOI: 10.3389/fimmu.2021.631696] [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: 11/20/2020] [Accepted: 05/04/2021] [Indexed: 12/24/2022] Open
Abstract
In 2019 10 million people developed symptomatic tuberculosis (TB) disease and 1.2 million died. In active TB the inflammatory response causes tissue destruction, which leads to both acute morbidity and mortality. Tissue destruction in TB is driven by host innate immunity and mediated via enzymes, chiefly matrix metalloproteinases (MMPs) which are secreted by leukocytes and stromal cells and degrade the extracellular matrix. Here we review the growing evidence implicating platelets in TB immunopathology. TB patients typically have high platelet counts, which correlate with disease severity, and a hypercoagulable profile. Platelets are present in human TB granulomas and platelet-associated gene transcripts are increased in TB patients versus healthy controls. Platelets most likely drive TB immunopathology through their effect on other immune cells, particularly monocytes, to lead to upregulation of activation markers, increased MMP secretion, and enhanced phagocytosis. Finally, we consider current evidence supporting use of targeted anti-platelet agents in the treatment of TB due to growing interest in developing host-directed therapies to limit tissue damage and improve treatment outcomes. In summary, platelets are implicated in TB disease and contribute to MMP-mediated tissue damage via their cellular interactions with other leukocytes, and are potential targets for novel host-directed therapies.
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Affiliation(s)
- Daniela E Kirwan
- Institute for Infection & Immunity, St. George's, University of London, London, United Kingdom
| | - Deborah L W Chong
- Institute for Infection & Immunity, St. George's, University of London, London, United Kingdom
| | - Jon S Friedland
- Institute for Infection & Immunity, St. George's, University of London, London, United Kingdom
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18
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Mariscal A, Zamora C, Magallares B, Salman-Monte TC, Ortiz MÀ, Díaz-Torné C, Castellví I, Corominas H, Vidal S. Phenotypic and Functional Consequences of PLT Binding to Monocytes and Its Association with Clinical Features in SLE. Int J Mol Sci 2021; 22:4719. [PMID: 33947017 PMCID: PMC8125177 DOI: 10.3390/ijms22094719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/21/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022] Open
Abstract
Platelets (PLTs) can modulate the immune system through the release of soluble mediators or through interaction with immune cells. Monocytes are the main immune cells that bind with PLTs, and this interaction is increased in several inflammatory and autoimmune conditions, including systemic lupus erythematosus (SLE). Our aim was to characterize the phenotypic and functional consequences of PLT binding to monocytes in healthy donors (HD) and in SLE and to relate it to the pathogenesis of SLE. We analyzed the phenotypic and functional features of monocytes with non-activated and activated bound PLTs by flow cytometry. We observed that monocytes with bound PLTs and especially those with activated PLTs have an up-regulated HLA-DR, CD86, CD54, CD16 and CD64 expression. Monocytes with bound PLTs also have an increased capacity for phagocytosis, though not for efferocytosis. In addition, monocytes with bound PLTs have increased IL-10, but not TNF-α, secretion. The altered phenotypic and functional features are comparable in SLE and HD monocytes and in bound PLTs. However, the percentages of monocytes with bound PLTs are significantly higher in SLE patients and are associated with undetectable levels of anti-dsDNA antibodies and hematuria, and with normal C3 and albumin/creatinine levels. Our results suggest that PLTs have a modulatory influence on monocytes and that this effect may be highlighted by an increased binding of PLTs to monocytes in autoimmune conditions.
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Affiliation(s)
- Anaís Mariscal
- Immunology Department, Hospital de la Santa Creu I Sant Pau, Biomedical Research Institute Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain;
| | - Carlos Zamora
- Laboratory of Inflammatory Diseases, Hospital de la Santa Creu I Sant Pau, Biomedical Research Institute Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain; (C.Z.); (M.À.O.)
| | - Berta Magallares
- Rheumatology Department, Hospital de la Santa Creu I Sant Pau, 08041 Barcelona, Spain; (B.M.); (C.D.-T.); (I.C.); (H.C.)
| | | | - Mª Àngels Ortiz
- Laboratory of Inflammatory Diseases, Hospital de la Santa Creu I Sant Pau, Biomedical Research Institute Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain; (C.Z.); (M.À.O.)
| | - Cesar Díaz-Torné
- Rheumatology Department, Hospital de la Santa Creu I Sant Pau, 08041 Barcelona, Spain; (B.M.); (C.D.-T.); (I.C.); (H.C.)
| | - Iván Castellví
- Rheumatology Department, Hospital de la Santa Creu I Sant Pau, 08041 Barcelona, Spain; (B.M.); (C.D.-T.); (I.C.); (H.C.)
| | - Héctor Corominas
- Rheumatology Department, Hospital de la Santa Creu I Sant Pau, 08041 Barcelona, Spain; (B.M.); (C.D.-T.); (I.C.); (H.C.)
| | - Silvia Vidal
- Laboratory of Inflammatory Diseases, Hospital de la Santa Creu I Sant Pau, Biomedical Research Institute Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain; (C.Z.); (M.À.O.)
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19
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Jurado-Escobar R, Doña I, Bogas-Herrera G, Pérez-Sánchez N, Salas M, Laguna JJ, Muñoz-Cano R, Mayorga C, Torres MJ, Cornejo-García JA. Platelet-Adherent Leukocytes Associated With Cutaneous Cross-Reactive Hypersensitivity to Nonsteroidal Anti-Inflammatory Drugs. Front Pharmacol 2021; 11:594427. [PMID: 33658935 PMCID: PMC7919189 DOI: 10.3389/fphar.2020.594427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/19/2020] [Indexed: 11/13/2022] Open
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are among the most highly consumed drugs worldwide and the main triggers of drug hypersensitivity reactions. The most frequent reaction, named cross-reactive NSAID-hypersensitivity, is due to the pharmacological activity of these drugs by blocking the cyclooxygenase-1 enzyme. Such inhibition leads to cysteinyl-leukotriene synthesis, mainly LTE4, which are responsible for the reaction. Although the complete molecular picture of the underlying mechanisms remains elusive, the participation of platelet-adherent leukocytes (CD61+) and integrins have been described for NSAID-exacerbated respiratory disease (NERD). However, there is a lack of information concerning NSAID-induced urticaria/angioedema (NIUA), by far the most frequent clinical phenotype. Here we have evaluated the potential role of CD61+ leukocytes and integrins (CD18, CD11a, CD11b, and CD11c) in patients with NIUA, and included the other two phenotypes with cutaneous involvement, NSAID-exacerbated cutaneous disease (NECD) and blended reactions (simultaneous skin and airways involvement). A group NSAID-tolerant individuals was also included. During the acute phase of the reaction, the three clinical phenotypes showed increased frequencies of CD61+ neutrophils, eosinophils, and monocytes compared to controls, which correlated with urinary LTE4 levels. However, no correlation was found between these variables at basal state. Furthermore, increased expressions of CD18 and CD11a were found in the three CD61+ leukocytes subsets in NIUA, NECD and blended reactions during the acute phase when compared with CD61-leukocyte subpopulations. During the acute phase, CD61+ neutrophils, eosinophils and monocytes showed increased CD18 and CD11a expression when compared with CD61+ leukocytes at basal state. No differences were found when comparing controls and CD61+ leukocytes at basal state. Our results support the participation of platelet-adherent leukocytes and integrins in cutaneous cross-hypersensitivity to NSAIDs and provide a link between these cells and arachidonic acid metabolism. Our findings also suggest that these reactions do not involve a systemic imbalance in the frequency of CD61+ cells/integrin expression or levels of LTE4, which represents a substantial difference to NERD. Although further studies are needed, our results shed light on the molecular basis of cutaneous cross-reactive NSAID-hypersensitivity, providing potential targets for therapy through the inhibition of platelet-leukocyte interactions.
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Affiliation(s)
- Raquel Jurado-Escobar
- Allergy Research Group, Instituto de Investigación Biomédica de Málaga-IBIMA, Malaga, Spain.,Departamento de Medicina, Universidad de Málaga, Malaga, Spain
| | - Inmaculada Doña
- Allergy Research Group, Instituto de Investigación Biomédica de Málaga-IBIMA, Malaga, Spain.,Allergy Unit, Hospital Regional Universitario de Málaga, Malaga, Spain.,ARADyAL Network, Instituto de Salud Carlos III, Madrid, Spain
| | | | | | - María Salas
- Allergy Unit, Hospital Regional Universitario de Málaga, Malaga, Spain
| | - José J Laguna
- ARADyAL Network, Instituto de Salud Carlos III, Madrid, Spain.,Allergy Unit, Allergo-Anaesthesia Unit, Hospital Central de la Cruz Roja, Faculty of Medicine, Alfonso X El Sabio University, Madrid, Spain
| | - Rosa Muñoz-Cano
- ARADyAL Network, Instituto de Salud Carlos III, Madrid, Spain.,Allergy Section, Pneumology Department, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Cristobalina Mayorga
- Allergy Research Group, Instituto de Investigación Biomédica de Málaga-IBIMA, Malaga, Spain.,Allergy Unit, Hospital Regional Universitario de Málaga, Malaga, Spain.,ARADyAL Network, Instituto de Salud Carlos III, Madrid, Spain.,Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory, Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Malaga, Spain
| | - María J Torres
- Allergy Research Group, Instituto de Investigación Biomédica de Málaga-IBIMA, Malaga, Spain.,Departamento de Medicina, Universidad de Málaga, Malaga, Spain.,Allergy Unit, Hospital Regional Universitario de Málaga, Malaga, Spain.,ARADyAL Network, Instituto de Salud Carlos III, Madrid, Spain.,Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory, Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Malaga, Spain
| | - José A Cornejo-García
- Allergy Research Group, Instituto de Investigación Biomédica de Málaga-IBIMA, Malaga, Spain.,ARADyAL Network, Instituto de Salud Carlos III, Madrid, Spain
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20
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Fu G, Deng M, Neal MD, Billiar TR, Scott MJ. Platelet-Monocyte Aggregates: Understanding Mechanisms and Functions in Sepsis. Shock 2021; 55:156-166. [PMID: 32694394 PMCID: PMC8008955 DOI: 10.1097/shk.0000000000001619] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
ABSTRACT Platelets have been shown to play an important immunomodulatory role in the pathogenesis of various diseases through their interactions with other immune and nonimmune cells. Sepsis is a major cause of death in the United States, and many of the mechanisms driving sepsis pathology are still unresolved. Monocytes have recently received increasing attention in sepsis pathogenesis, and multiple studies have associated increased levels of platelet-monocyte aggregates observed early in sepsis with clinical outcomes in sepsis patients. These findings suggest platelet-monocyte aggregates may be an important prognostic indicator. However, the mechanisms leading to platelet interaction and aggregation with monocytes, and the effects of aggregation during sepsis are still poorly defined. There are few studies that have really investigated functions of platelets and monocytes together, despite a large body of research showing separate functions of platelets and monocytes in inflammation and immune responses during sepsis. The goal of this review is to provide insights into what we do know about mechanisms and biological meanings of platelet-monocyte interactions, as well as some of the technical challenges and limitations involved in studying this important potential mechanism in sepsis pathogenesis. Improving our understanding of platelet and monocyte biology in sepsis may result in identification of novel targets that can be used to positively affect outcomes in sepsis.
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Affiliation(s)
- Guang Fu
- Department of General Surgery, The 3rd Xiangya Hospital, Central South University, Changsha, Hunan, China (visiting scholar in Pittsburgh 2018-09/2020-09)
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Meihong Deng
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Matthew D. Neal
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
- Pittsburgh Trauma Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Timothy R. Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
- Pittsburgh Trauma Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Melanie J. Scott
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
- Pittsburgh Trauma Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
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21
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Liu Y, Lv H, Tan R, An X, Niu XH, Liu YJ, Yang X, Yin X, Xia YL. Platelets Promote Ang II (Angiotensin II)-Induced Atrial Fibrillation by Releasing TGF-β1 (Transforming Growth Factor-β1) and Interacting With Fibroblasts. Hypertension 2020; 76:1856-1867. [PMID: 33175633 DOI: 10.1161/hypertensionaha.120.15016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Hypertension is a risk factor of atrial fibrillation (AF), and a certain number of patients with hypertension were found with an enlarged left atrium. Platelet activation is found in patients with hypertension or pressure overload/Ang II (angiotensin II)-induced hypertensive animal models and contribute to ventricular fibrosis. Whether hypertension-induced atrial fibrosis is mediated by platelets remains unknown. Our previous experimental data showed that platelet-derived TGF-β1 (transforming growth factor-β1) was reduced in patients with hypertensive AF. The present study is to investigate whether platelet-derived TGF-β1 promotes Ang II-induced atrial fibrosis and AF. Platelet activation and atrial platelet accumulation were measured in sinus rhythm controls, normotensive AF, and patients with hypertensive AF. Ang II (1500 ng/kg per minute, 3 weeks) infused mice with pharmacological (clopidogrel) and genetic platelet inhibition (TGF-β1 deletion in platelets) were used. Platelet activation, atrial structural remodeling, atrial electrical transmission, AF inducibility, inflammation, and fibrosis were measured in mice. We found that circulating platelets were activated in patients with hypertensive AF. A large amount of platelet was accumulated in the atriums of patients with hypertensive AF. Both clopidogrel treatment and platelet-specific deletion of TGF-β1 attenuated Ang II-induced structural remodeling, atrial electrical transmission, AF inducibility, as well as atrial inflammation and fibrosis than mice without interventions. Furthermore, clopidogrel blocked atrial platelet accumulation and platelet-fibroblast conjugation. Platelets promoted atrial fibroblast differentiation in cell culture. Profibrotic actions of platelets are largely via activation of atrial fibroblasts by releasing TGF-β1 and inducing platelet-fibroblast conjugation, and platelet inhibition is sufficient to inhibit atrial fibrosis and AF inducibility.
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Affiliation(s)
- Yang Liu
- From the Institute of Heart and Vascular Diseases (Y.L., R.T., X.A., X.N., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
| | - Haichen Lv
- Department of Cardiology (H.L., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
| | - Ruopeng Tan
- From the Institute of Heart and Vascular Diseases (Y.L., R.T., X.A., X.N., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
| | - Xiangbo An
- From the Institute of Heart and Vascular Diseases (Y.L., R.T., X.A., X.N., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
| | - Xiao-Hui Niu
- From the Institute of Heart and Vascular Diseases (Y.L., R.T., X.A., X.N., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China.,Yixing People's Hospital, the Affiliated Hospital of Jiangsu University, China (X.N.)
| | - Yue-Jian Liu
- Central Laboratory (Y.-J.L.), the First Affiliated Hospital of Dalian Medical University, China
| | - Xiaolei Yang
- From the Institute of Heart and Vascular Diseases (Y.L., R.T., X.A., X.N., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
| | - Xiaomeng Yin
- Department of Cardiology (H.L., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
| | - Yun-Long Xia
- From the Institute of Heart and Vascular Diseases (Y.L., R.T., X.A., X.N., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China.,Department of Cardiology (H.L., X.Y., Y.-L.X.), the First Affiliated Hospital of Dalian Medical University, China
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22
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Rawish E, Nording H, Münte T, Langer HF. Platelets as Mediators of Neuroinflammation and Thrombosis. Front Immunol 2020; 11:548631. [PMID: 33123127 PMCID: PMC7572851 DOI: 10.3389/fimmu.2020.548631] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 09/14/2020] [Indexed: 12/20/2022] Open
Abstract
Beyond platelets function in hemostasis, there is emerging evidence to suggest that platelets contribute crucially to inflammation and immune responses. Therefore, considering the detrimental role of inflammatory conditions in severe neurological disorders such as multiple sclerosis or stroke, this review outlines platelets involvement in neuroinflammation. For this, distinct mechanisms of platelet-mediated thrombosis and inflammation are portrayed, focusing on the interaction of platelet receptors with other immune cells as well as brain endothelial cells. Furthermore, we draw attention to the intimate interplay between platelets and the complement system as well as between platelets and plasmatic coagulation factors in the course of neuroinflammation. Following the thorough exposition of preclinical approaches which aim at ameliorating disease severity after inducing experimental autoimmune encephalomyelitis (a counterpart of multiple sclerosis in mice) or brain ischemia-reperfusion injury, the clinical relevance of platelet-mediated neuroinflammation is addressed. Thus, current as well as future propitious translational and clinical strategies for the treatment of neuro-inflammatory diseases by affecting platelet function are illustrated, emphasizing that targeting platelet-mediated neuroinflammation could become an efficient adjunct therapy to mitigate disease severity of multiple sclerosis or stroke associated brain injury.
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Affiliation(s)
- Elias Rawish
- University Hospital Schleswig-Holstein, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Lübeck, Germany
| | - Henry Nording
- University Hospital Schleswig-Holstein, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Lübeck, Germany
| | - Thomas Münte
- University Hospital Schleswig-Holstein, Clinic for Neurology, Lübeck, Germany
| | - Harald F Langer
- University Hospital Schleswig-Holstein, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Lübeck, Germany
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23
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Braxton AM, Chalmin AL, Najarro KM, Brockhurst JK, Johnson KT, Lyons CE, Daly B, Cryer CG, Vijay S, Cyphers G, Guerrero-Martin SM, Aston SA, McGee K, Su YP, Arav-Boger R, Metcalf Pate KA. Platelet-endothelial associations may promote cytomegalovirus replication in the salivary gland in mice. Platelets 2020; 31:860-868. [PMID: 31726921 PMCID: PMC7220825 DOI: 10.1080/09537104.2019.1689383] [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: 09/13/2019] [Revised: 10/24/2019] [Accepted: 10/31/2019] [Indexed: 10/25/2022]
Abstract
Platelet decline is a feature of many acute viral infections, including cytomegalovirus (CMV) infection in humans and mice. Platelet sequestration in association with other cells, including endothelium and circulating leukocytes, can contribute to this decline and influence the immune response to and pathogenesis of viral infection. We sought to determine if platelet-endothelial associations (PEAs) contribute to platelet decline during acute murine CMV (mCMV) infection, and if these associations affect viral load and production. Male BALB/c mice were infected with mCMV (Smith strain), euthanized at timepoints throughout acute infection and compared to uninfected controls. An increase in PEA formation was confirmed in the salivary gland at all post-inoculation timepoints using immunohistochemistry for CD41+ platelets co-localizing with CD34+ vessels. Platelet depletion did not change amount of viral DNA or timecourse of infection, as measured by qPCR. However, platelet depletion reduced viral titer of mCMV in the salivary glands while undepleted controls demonstrated robust replication in the tissue by plaque assay. Thus, platelet associations with endothelium may enhance the ability of mCMV to replicate within the salivary gland. Further work is needed to determine the mechanisms behind this effect and if pharmacologic inhibition of PEAs may reduce CMV production in acutely infected patients.
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Affiliation(s)
- Alicia M. Braxton
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Alyssa L. Chalmin
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Kevin M. Najarro
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Jacqueline K. Brockhurst
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
- University of Pennsylvania School of Veterinary Medicine, Philadelphia, USA
| | - Karl T. Johnson
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Claire E. Lyons
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Brenna Daly
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
- Cummings School of Veterinary Medicine, Tufts University, North Grafton, USA
| | - Catherine G. Cryer
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
- University of Pennsylvania School of Veterinary Medicine, Philadelphia, USA
| | - Shefali Vijay
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Griffin Cyphers
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Selena M. Guerrero-Martin
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - S. Andrew Aston
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
- Department of Psychiatry of Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Kirstin McGee
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Yu-Pin Su
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Ravit Arav-Boger
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, USA
| | - Kelly A. Metcalf Pate
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, USA
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24
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Platelets Boost Recruitment of CD133 + Bone Marrow Stem Cells to Endothelium and the Rodent Liver-The Role of P-Selectin/PSGL-1 Interactions. Int J Mol Sci 2020; 21:ijms21176431. [PMID: 32899390 PMCID: PMC7504029 DOI: 10.3390/ijms21176431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 08/28/2020] [Accepted: 08/31/2020] [Indexed: 02/06/2023] Open
Abstract
We previously demonstrated that clinical administration of mobilized CD133+ bone marrow stem cells (BMSC) accelerates hepatic regeneration. Here, we investigated the potential of platelets to modulate CD133+BMSC homing to hepatic endothelial cells and sequestration to warm ischemic livers. Modulatory effects of platelets on the adhesion of CD133+BMSC to human and mouse liver-sinusoidal- and micro- endothelial cells (EC) respectively were evaluated in in vitro co-culture systems. CD133+BMSC adhesion to all types of EC were increased in the presence of platelets under shear stress. This platelet effect was mostly diminished by antagonization of P-selectin and its ligand P-Selectin-Glyco-Ligand-1 (PSGL-1). Inhibition of PECAM-1 as well as SDF-1 receptor CXCR4 had no such effect. In a model of the isolated reperfused rat liver subsequent to warm ischemia, the co-infusion of platelets augmented CD133+BMSC homing to the injured liver with heightened transmigration towards the extra sinusoidal space when compared to perfusion conditions without platelets. Extravascular co-localization of CD133+BMSC with hepatocytes was confirmed by confocal microscopy. We demonstrated an enhancing effect of platelets on CD133+BMSC homing to and transmigrating along hepatic EC putatively depending on PSGL-1 and P-selectin. Our insights suggest a new mechanism of platelets to augment stem cell dependent hepatic repair.
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Abstract
Platelets, small anucleate cells circulating in the blood, are critical mediators in haemostasis and thrombosis. Interestingly, recent studies demonstrated that platelets contain both pro-inflammatory and anti-inflammatory molecules, equipping platelets with immunoregulatory function in both innate and adaptive immunity. In the context of infectious diseases, platelets are involved in early detection of invading microorganisms and are actively recruited to sites of infection. Platelets exert their effects on microbial pathogens either by direct binding to eliminate or restrict dissemination, or by shaping the subsequent host immune response. Reciprocally, many invading microbial pathogens can directly or indirectly target host platelets, altering platelet count or/and function. In addition, microbial pathogens can impact the host auto- and alloimmune responses to platelet antigens in several immune-mediated diseases, such as immune thrombocytopenia, and fetal and neonatal alloimmune thrombocytopenia. In this review, we discuss the mechanisms that contribute to the bidirectional interactions between platelets and various microbial pathogens, and how these interactions hold relevant implications in the pathogenesis of many infectious diseases. The knowledge obtained from "well-studied" microbes may also help us understand the pathogenesis of emerging microbes, such as SARS-CoV-2 coronavirus.
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Affiliation(s)
- Conglei Li
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, ON, Canada
| | - June Li
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
- Canadian Blood Services Centre for Innovation, Toronto, ON, Canada
| | - Heyu Ni
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
- Canadian Blood Services Centre for Innovation, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
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26
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Nording H, Baron L, Langer HF. Platelets as therapeutic targets to prevent atherosclerosis. Atherosclerosis 2020; 307:97-108. [DOI: 10.1016/j.atherosclerosis.2020.05.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/30/2020] [Accepted: 05/27/2020] [Indexed: 12/11/2022]
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27
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Lee BK, Kim MH, Lee SY, Son SJ, Hong CH, Jung YS. Downregulated Platelet miR-1233-5p in Patients with Alzheimer's Pathologic Change with Mild Cognitive Impairment is Associated with Aβ-Induced Platelet Activation via P-Selectin. J Clin Med 2020; 9:jcm9061642. [PMID: 32485903 PMCID: PMC7357133 DOI: 10.3390/jcm9061642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRNAs) have been proposed as a promising biomarker for various diseases including Alzheimer’s disease (AD). More attention has recently been focused on the diagnosis and treatment at earlier stage of mild cognitive impairment (MCI) for preventing its progression to AD. To identify potential pathologic markers for Aβ(+)MCI (Alzheimer’s pathologic change with MCI), we investigated miRNA expression profiles in the platelets from patients with Aβ(+)MCI, in comparison with those from Aβ(−)MCI (Non-Alzheimer’s pathologic change with MCI) and CNI (cognitively normal individuals). We found that let-7i-5p, miR-125a, miR-1233-5p, and miR-6787-5p were significantly downregulated, while miR-6880-5p expression was upregulated. Of these, only miR-1233-5p was significantly downregulated by Aβ treatment in both human platelets and their precursor megakaryocytes (MEG-01 cells). We explored the role of miRNAs by using miRNA mimics or inhibitors, and found that the diminished level of miR-1233-5p was associated with Aβ-induced increase in the expression of P-selectin and cell adhesion to fibronectin. Our results further indicated that Aβ-induced increase in platelet/MEG adhesion to fibronectin is likely mediated via P-selectin. In conclusion, this study suggests the downregulation of platelet-derived miR-1233-5p as a pathologic marker for Aβ(+)MCI.
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Affiliation(s)
- Bo Kyung Lee
- College of Pharmacy, Ajou University, Suwon 16499, Korea; (B.K.L.); or (M.H.K.)
| | - Min Hee Kim
- College of Pharmacy, Ajou University, Suwon 16499, Korea; (B.K.L.); or (M.H.K.)
- Research Institute of Pharmaceutical Sciences and Technology, Ajou University, Suwon 16499, Korea
| | - Sang Yoon Lee
- Department of Biomedical Sciences, School of Medicine, Ajou University, Suwon 16499, Korea;
| | - Sang Joon Son
- Department of Psychiatry, School of Medicine, Ajou University, Suwon 16499, Korea;
| | - Chang Hyung Hong
- Department of Psychiatry, School of Medicine, Ajou University, Suwon 16499, Korea;
- Correspondence: (C.H.H.); (Y.-S.J.); Tel.: +82-31-219-3444 (C.H.H.); +82-31-219-5185 (Y.-S.J.)
| | - Yi-Sook Jung
- College of Pharmacy, Ajou University, Suwon 16499, Korea; (B.K.L.); or (M.H.K.)
- Research Institute of Pharmaceutical Sciences and Technology, Ajou University, Suwon 16499, Korea
- Correspondence: (C.H.H.); (Y.-S.J.); Tel.: +82-31-219-3444 (C.H.H.); +82-31-219-5185 (Y.-S.J.)
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28
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An X, Jiang G, Cheng C, Lv Z, Liu Y, Wang F. Inhibition of Platelets by Clopidogrel Suppressed Ang II-Induced Vascular Inflammation, Oxidative Stress, and Remodeling. J Am Heart Assoc 2019; 7:e009600. [PMID: 30608200 PMCID: PMC6404205 DOI: 10.1161/jaha.118.009600] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Platelets play a role in promoting inflammatory responses under several disease conditions. Platelets are activated in hypertensive patients. However, the mechanisms responsible for platelet‐mediating vascular inflammation are unknown. The present study investigated the role of platelets in promoting vascular inflammation following angiotensin II (Ang II) stimulation, and the efficacy of antiplatelet intervention. Methods and Results Within a mouse model of Ang II infusion (490 ng/kg per min), we measured the portion of P‐selectin–positive platelets and platelet‐monocyte (P‐M) binding in blood samples, and platelet accumulation and P‐M binding in vessels under Ang II stimulation at days 1, 3, and 7. We tested the efficacy of clopidogrel (15 mg/kg per day, followed by 5 mg/kg per day) on Ang II‐induced platelet activation, P‐M binding, vascular platelet accumulation, as well as vascular inflammation and remodeling at day 7 or 14. Clopidogrel reduced platelet vascular deposition (28.7±2.4% versus 18.3±2.9%), suppressed inflammatory cell infiltration (3.6±0.8×104/vessel versus 2.3±1.2×104/vessel) and oxidative stress, and attenuated vascular remodeling and dysfunction (55.0±5.5% versus 84.0±6.0%) following Ang II stimulation at day 7 or 14. Clopidogrel suppressed Ang II‐induced P‐M binding both at circulating (13.4±3.3% versus 5.9±2.7%) and regional (33.4±4.3% versus 11.9±2.7%) levels. Conclusions Platelets play a critical role in vascular inflammation under Ang II stimulation, with a marked promotion of P‐M binding as an important mechanism. Clopidogrel prevented vascular inflammation in Ang II‐infused mice.
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Affiliation(s)
- Xiangbo An
- 1 Department of Interventional Therapy the First Affiliated Hospital of Dalian Medical University Dalian China.,3 Institute of Cardiovascular Diseases the First Affiliated Hospital of Dalian Medical University Dalian China
| | - Guinan Jiang
- 1 Department of Interventional Therapy the First Affiliated Hospital of Dalian Medical University Dalian China.,3 Institute of Cardiovascular Diseases the First Affiliated Hospital of Dalian Medical University Dalian China
| | - Cheng Cheng
- 4 Center for Clinical Research on Neurological Diseases the First Affiliated Hospital of Dalian Medical University Dalian China
| | - Zhengshuai Lv
- 2 Department of Anesthesia the First Affiliated Hospital of Dalian Medical University Dalian China
| | - Yang Liu
- 3 Institute of Cardiovascular Diseases the First Affiliated Hospital of Dalian Medical University Dalian China
| | - Feng Wang
- 1 Department of Interventional Therapy the First Affiliated Hospital of Dalian Medical University Dalian China
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29
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Margraf A, Zarbock A. Platelets in Inflammation and Resolution. THE JOURNAL OF IMMUNOLOGY 2019; 203:2357-2367. [DOI: 10.4049/jimmunol.1900899] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 08/30/2019] [Indexed: 12/22/2022]
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30
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Yip HK, Chen KH, Dubey NK, Sun CK, Deng YH, Su CW, Lo WC, Cheng HC, Deng WP. Cerebro- and renoprotective activities through platelet-derived biomaterials against cerebrorenal syndrome in rat model. Biomaterials 2019; 214:119227. [DOI: 10.1016/j.biomaterials.2019.119227] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 12/18/2022]
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31
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Gaertner F, Massberg S. Patrolling the vascular borders: platelets in immunity to infection and cancer. Nat Rev Immunol 2019; 19:747-760. [DOI: 10.1038/s41577-019-0202-z] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2019] [Indexed: 12/13/2022]
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32
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Wang X, Yu Q. An update on the progress of transcriptomic profiles of human endometrial receptivity. Biol Reprod 2019; 98:440-448. [PMID: 29365037 DOI: 10.1093/biolre/ioy018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 01/19/2018] [Indexed: 12/19/2022] Open
Abstract
Despite advances in our understanding of fertility, implantation failure remains a significant problem for both spontaneous and assisted pregnancies. Most research efforts concerning the process of implantation are embryo-centric, with a dearth of studies on endometrial factors. Currently, there are no practical and effective diagnostic tools available to precisely predict endometrial receptivity. Transcriptomics, a field based on microarray technology, has a number of procedures for clinical applications, although the functional relevance of most identified genes remains unclear. Importantly, RNA sequencing will further improve the precision and broaden the clinical use of the transcriptome by detecting previously undiscovered genes, which could be used to further our understanding of endometrial receptivity. In this review, potential biomarkers based on endometrium gene expression profiles of human endometrial receptivity were described and compared in natural and stimulated cycles toward discovering future prospects for personalized medical approaches. The intent of this synthesis is to provide researchers, doctors, and clinicians in the field with a better understanding of endometrium receptivity, promote further study in the transcriptome in embryo implantation, and ultimately, improve pregnancy outcome.
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Affiliation(s)
- Xi Wang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Qi Yu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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33
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Ribeiro LS, Migliari Branco L, Franklin BS. Regulation of Innate Immune Responses by Platelets. Front Immunol 2019; 10:1320. [PMID: 31244858 PMCID: PMC6579861 DOI: 10.3389/fimmu.2019.01320] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 05/23/2019] [Indexed: 12/11/2022] Open
Abstract
The role of platelets has been extensively studied in the context of coagulation and vascular integrity. Their hemostatic imbalance can lead to known conditions as atherosclerotic plaques, thrombosis, and ischemia. Nevertheless, the knowledge regarding the regulation of different cell types by platelets has been growing exponentially in the past years. Among these biological systems, the innate immune response is remarkably affected by the crosstalk with platelets. This interaction can come from the formation of platelet-leukocyte aggregates, signaling by direct contact between membrane surface molecules or by the stimulation of immune cells by soluble factors and active microparticles secreted by platelets. These ubiquitous blood components are able to sense and react to danger signals, guiding leukocytes to an injury site and providing a scaffold for the formation of extracellular traps for efficient microbial killing and clearance. Using several different mechanisms, platelets have an important task as they regulate the release of different cytokines and chemokines upon sterile or infectious damage, the expression of cell markers and regulation of cell death and survival. Therefore, platelets are more than clotting agents, but critical players within the fine inflammatory equilibrium for the host. In this review, we present pointers to a better understanding about how platelets control and modulate innate immune cells, as well as a summary of the outcome of this interaction, providing an important step for therapeutic opportunities and guidance for future research on infectious and autoimmune diseases.
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Affiliation(s)
- Lucas Secchim Ribeiro
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany
| | - Laura Migliari Branco
- Centro de Terapia Celular e Molecular (CTC-Mol), Universidade Federal de São Paulo, São Paulo, Brazil
| | - Bernardo S Franklin
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany
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34
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Iqbal A, Prince LR, Novodvorsky P, Bernjak A, Thomas MR, Birch L, Lambert D, Kay LJ, Wright FJ, Macdonald IA, Jacques RM, Storey RF, McCrimmon RJ, Francis S, Heller SR, Sabroe I. Effect of Hypoglycemia on Inflammatory Responses and the Response to Low-Dose Endotoxemia in Humans. J Clin Endocrinol Metab 2019; 104:1187-1199. [PMID: 30252067 PMCID: PMC6391720 DOI: 10.1210/jc.2018-01168] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 09/19/2018] [Indexed: 12/20/2022]
Abstract
CONTEXT Hypoglycemia is emerging as a risk for cardiovascular events in diabetes. We hypothesized that hypoglycemia activates the innate immune system, which is known to increase cardiovascular risk. OBJECTIVE To determine whether hypoglycemia modifies subsequent innate immune system responses. DESIGN AND SETTING Single-blinded, prospective study of three independent parallel groups. PARTICIPANTS AND INTERVENTIONS Twenty-four healthy participants underwent either a hyperinsulinemic-hypoglycemic (2.5 mmol/L), euglycemic (6.0 mmol/L), or sham-saline clamp (n = 8 for each group). After 48 hours, all participants received low-dose (0.3 ng/kg) intravenous endotoxin. MAIN OUTCOME MEASURES We studied in-vivo monocyte mobilization and monocyte-platelet interactions. RESULTS Hypoglycemia increased total leukocytes (9.98 ± 1.14 × 109/L vs euglycemia 4.38 ± 0.53 × 109/L, P < 0.001; vs sham-saline 4.76 ± 0.36 × 109/L, P < 0.001) (mean ± SEM), mobilized proinflammatory intermediate monocytes (42.20 ± 7.52/μL vs euglycemia 20.66 ± 3.43/μL, P < 0.01; vs sham-saline 26.20 ± 3.86/μL, P < 0.05), and nonclassic monocytes (36.16 ± 4.66/μL vs euglycemia 12.72 ± 2.42/μL, P < 0.001; vs sham-saline 19.05 ± 3.81/μL, P < 0.001). Following hypoglycemia vs euglycemia, platelet aggregation to agonist (area under the curve) increased (73.87 ± 7.30 vs 52.50 ± 4.04, P < 0.05) and formation of monocyte-platelet aggregates increased (96.05 ± 14.51/μL vs 49.32 ± 6.41/μL, P < 0.05). Within monocyte subsets, hypoglycemia increased aggregation of intermediate monocytes (10.51 ± 1.42/μL vs euglycemia 4.19 ± 1.08/μL, P < 0.05; vs sham-saline 3.81± 1.42/μL, P < 0.05) and nonclassic monocytes (9.53 ± 1.08/μL vs euglycemia 2.86 ± 0.72/μL, P < 0.01; vs sham-saline 3.08 ± 1.01/μL, P < 0.05), with platelets compared with controls. Hypoglycemia led to greater leukocyte mobilization in response to subsequent low-dose endotoxin challenge (10.96 ± 0.97 vs euglycemia 8.21 ± 0.85 × 109/L, P < 0.05). CONCLUSIONS Hypoglycemia mobilizes monocytes, increases platelet reactivity, promotes interaction between platelets and proinflammatory monocytes, and potentiates the subsequent immune response to endotoxin. These changes may contribute to increased cardiovascular risk observed in people with diabetes.
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Affiliation(s)
- Ahmed Iqbal
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Lynne R Prince
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Peter Novodvorsky
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, United Kingdom
| | - Alan Bernjak
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, United Kingdom
- INSIGNEO Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Mark R Thomas
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Lewis Birch
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Danielle Lambert
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Linda J Kay
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Fiona J Wright
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Ian A Macdonald
- MRC/ARUK Centre for Musculoskeletal Ageing Research, National Institute for Health Research Nottingham Biomedical Research Centre, Nottingham, United Kingdom
- Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, University Nottingham, Nottingham, United Kingdom
| | - Richard M Jacques
- School of Health and Related Research, University of Sheffield, Sheffield, United Kingdom
| | - Robert F Storey
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Rory J McCrimmon
- Division of Molecular and Clinical Medicine, University of Dundee, Dundee, United Kingdom
| | - Sheila Francis
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Simon R Heller
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, United Kingdom
- Correspondence and Reprint Requests: Simon R. Heller, DM, Department of Oncology and Metabolism, University of Sheffield, Medical School, Beech Hill Road, Sheffield S10 2RX, United Kingdom. E-mail:
| | - Ian Sabroe
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
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Przygodzki T, Kassassir H, Talar M, Siewiera K, Watala C. Effects of three-month streptozotocin-induced diabetes in mice on blood platelet reactivity, COX-1 expression and adhesion potential. Int J Exp Pathol 2019; 100:41-48. [PMID: 30811756 DOI: 10.1111/iep.12298] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/29/2018] [Accepted: 12/06/2018] [Indexed: 12/25/2022] Open
Abstract
Diabetes is associated with an increased risk of cardiovascular disease. This is partially attributed to an altered activation status of blood platelets in this disease. Previously, alterations have been shown in COX-1 and protease activated receptor (PAR)-3 receptor expression in platelets in two animal models of diabetes, there have not been studies which address expression of these proteins in mice with long-term streptozotocin (STZ)-induced diabetes. We have also addressed the effect of diabetes on platelet adhesion under flow conditions. With the use of flow cytometry, we have shown that certain markers of platelet basal activation, such as active form of αII b β3 and of CD40L were increased in STZ-induced diabetic mice. Platelets from STZ-induced diabetic mice were also more reactive when stimulated with PAR-4 activating peptide as revealed by higher expression of active form of αII b β3 , membrane-bound on vWillebrand Factor and binding of exogenous fluorescein isothyanate-labelled fibrinogen. Expression of COX-1 and production of thromboxane A2 in platelets of STZ-induced diabetic mice were higher than in control animals. We observed no effect of diabetes on ability of platelets to form stable adhesions with fibrinogen in flow conditions. We conclude that although certain similarities exist between patterns of activation of platelets in animal models of diabetes, the differences should also be taken into account.
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Affiliation(s)
- Tomasz Przygodzki
- Department of Haemostatic Disorders, Chair of Biomedical Sciences, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Hassan Kassassir
- Department of Haemostatic Disorders, Chair of Biomedical Sciences, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Marcin Talar
- Department of Haemostatic Disorders, Chair of Biomedical Sciences, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Karolina Siewiera
- Department of Haemostatic Disorders, Chair of Biomedical Sciences, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Cezary Watala
- Department of Haemostatic Disorders, Chair of Biomedical Sciences, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
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Williams PA, Braine CE, Kizhatil K, Foxworth NE, Tolman NG, Harder JM, Scott RA, Sousa GL, Panitch A, Howell GR, John SWM. Inhibition of monocyte-like cell extravasation protects from neurodegeneration in DBA/2J glaucoma. Mol Neurodegener 2019; 14:6. [PMID: 30670050 PMCID: PMC6341618 DOI: 10.1186/s13024-018-0303-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 12/05/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Glaucoma is characterized by the progressive dysfunction and loss of retinal ganglion cells. Recent work in animal models suggests that a critical neuroinflammatory event damages retinal ganglion cell axons in the optic nerve head during ocular hypertensive injury. We previously demonstrated that monocyte-like cells enter the optic nerve head in an ocular hypertensive mouse model of glaucoma (DBA/2 J), but their roles, if any, in mediating axon damage remain unclear. METHODS To understand the function of these infiltrating monocyte-like cells, we used RNA-sequencing to profile their transcriptomes. Based on their pro-inflammatory molecular signatures, we hypothesized and confirmed that monocyte-platelet interactions occur in glaucomatous tissue. Furthermore, to test monocyte function we used two approaches to inhibit their entry into the optic nerve head: (1) treatment with DS-SILY, a peptidoglycan that acts as a barrier to platelet adhesion to the vessel wall and to monocytes, and (2) genetic targeting of Itgam (CD11b, an immune cell receptor that enables immune cell extravasation). RESULTS Monocyte specific RNA-sequencing identified novel neuroinflammatory pathways early in glaucoma pathogenesis. Targeting these processes pharmacologically (DS-SILY) or genetically (Itgam / CD11b knockout) reduced monocyte entry and provided neuroprotection in DBA/2 J eyes. CONCLUSIONS These data demonstrate a key role of monocyte-like cell extravasation in glaucoma and demonstrate that modulating neuroinflammatory processes can significantly lessen optic nerve injury.
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Affiliation(s)
- Pete A Williams
- The Jackson Laboratory, Bar Harbor, ME, USA.,Department of Clinical Neuroscience, Section of Ophthalmology and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | | | | | | | | | | | - Rebecca A Scott
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, USA
| | | | - Alyssa Panitch
- Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Gareth R Howell
- The Jackson Laboratory, Bar Harbor, ME, USA. .,Graduate Program in Genetics, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA.
| | - Simon W M John
- The Jackson Laboratory, Bar Harbor, ME, USA. .,Department of Ophthalmology, Tufts University of Medicine, Boston, MA, USA. .,The Howard Hughes Medical Institute, Bar Harbor, ME, USA.
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Borsig L. Selectins in cancer immunity. Glycobiology 2018; 28:648-655. [PMID: 29272415 DOI: 10.1093/glycob/cwx105] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 12/18/2017] [Indexed: 12/12/2022] Open
Abstract
Selectins are vascular adhesion molecules that mediate physiological responses such as inflammation, immunity and hemostasis. During cancer progression, selectins promote various steps enabling the interactions between tumor cells and the blood constituents, including platelets, endothelial cells and leukocytes. Selectins are carbohydrate-binding molecules that bind to sialylated, fucosylated glycan structures. The increased selectin ligand expression on tumor cells correlates with enhanced metastasis and poor prognosis for cancer patients. While, many studies focused on the role of selectin as a mediator of tumor cell adhesion and extravasation during metastasis, there is evidence for selectins to activate signaling cascade that regulates immune responses within a tumor microenvironment. L-Selectin binding induces activation of leukocytes, which can be further modulated by selectin-mediated interactions with platelets and endothelial cells. Selectin ligand on leukocytes, PSGL-1, triggers intracellular signaling in leukocytes that are induced through platelet's P-selectin or endothelial E-selectin binding. In this review, I summarize the evidence for selectin-induced immune modulation in cancer progression that represents a possible target for controlling tumor immunity.
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Affiliation(s)
- Lubor Borsig
- Institute of Physiology, University of Zurich and Zurich Center for Integrative Human Physiology, Winterthurerstrasse 190, Zurich, Switzerland
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Ivert T, Dalén M, Ander C, Stålesen R, Lordkipanidzé M, Hjemdahl P. Increased platelet reactivity and platelet-leukocyte aggregation after elective coronary bypass surgery. Platelets 2018; 30:975-981. [PMID: 30422037 DOI: 10.1080/09537104.2018.1542122] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Inflammatory mechanisms are activated, and thrombotic complications occur during the initial months after coronary artery bypass grafting (CABG). Therefore, changes over time of platelet activation and platelet-leukocyte interactions after CABG are of interest. Whole-blood flow cytometry was performed before, and 4-6 days, one month, and three months after elective CABG in 54 men with stable coronary artery disease treated with acetylsalicylic acid (ASA). Single platelets and platelet-leukocyte aggregates (PLAs) among monocytes (P-Mon), neutrophils (P-Neu), and lymphocytes (P-Lym) were studied without and with stimulation by submaximal concentrations of ADP, thrombin, and the thromboxane analog U46619. White blood cell counts were increased during the initial postoperative course, and platelet counts were increased after one month. Platelet P-selectin expression was significantly enhanced at one month when stimulated by thrombin and U46619 and at three months with ADP and thrombin. All PLAs subtypes were increased at one month without stimulation in vitro. P-Mon and P-Neu stimulated by ADP, thrombin, or U46619 were significantly increased one month after the operation but decreased compared to baseline at three months. Agonist stimulated P-Lyms were increased at one month and remained increased at three months after ADP stimulation. There was significant platelet activation and formation of PLAs unstimulated and after agonist stimulation by ADP, thrombin, and a thromboxane analog after CABG in patients with stable coronary artery disease irrespective of ASA treatment. Changes observed up to three months after CABG support further studies of the clinical implications of protracted increases in platelet activation and platelet-leukocyte interactions.
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Affiliation(s)
- Torbjörn Ivert
- Heart and Vascular Theme, Karolinska University Hospital and Department of Molecular Medicine and Surgery, Karolinska Institutet , Stockholm , Sweden
| | - Magnus Dalén
- Heart and Vascular Theme, Karolinska University Hospital and Department of Molecular Medicine and Surgery, Karolinska Institutet , Stockholm , Sweden
| | - Charlotte Ander
- Department of Clinical Pharmacology, Karolinska University Hospital and Department of Medicine Solna, Karolinska Institutet , Stockholm , Sweden
| | - Ragnhild Stålesen
- Department of Clinical Pharmacology, Karolinska University Hospital and Department of Medicine Solna, Karolinska Institutet , Stockholm , Sweden
| | - Marie Lordkipanidzé
- Faculté de pharmacie, Université de Montréal,and Research center, Montreal Heart Institute , Montréal , Québec , Canada
| | - Paul Hjemdahl
- Department of Clinical Pharmacology, Karolinska University Hospital and Department of Medicine Solna, Karolinska Institutet , Stockholm , Sweden
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Schlesinger M. Role of platelets and platelet receptors in cancer metastasis. J Hematol Oncol 2018; 11:125. [PMID: 30305116 PMCID: PMC6180572 DOI: 10.1186/s13045-018-0669-2] [Citation(s) in RCA: 342] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 09/25/2018] [Indexed: 01/15/2023] Open
Abstract
The interaction of tumor cells with platelets is a prerequisite for successful hematogenous metastatic dissemination. Upon tumor cell arrival in the blood, tumor cells immediately activate platelets to form a permissive microenvironment. Platelets protect tumor cells from shear forces and assault of NK cells, recruit myeloid cells by secretion of chemokines, and mediate an arrest of the tumor cell platelet embolus at the vascular wall. Subsequently, platelet-derived growth factors confer a mesenchymal-like phenotype to tumor cells and open the capillary endothelium to expedite extravasation in distant organs. Finally, platelet-secreted growth factors stimulate tumor cell proliferation to micrometastatic foci. This review provides a synopsis on the current literature on platelet-mediated effects in cancer metastasis and particularly focuses on platelet adhesion receptors and their role in metastasis. Immunoreceptor tyrosine-based activation motif (ITAM) and hemi ITAM (hemITAM) comprising receptors, especially, glycoprotein VI (GPVI), FcγRIIa, and C-type lectin-like-2 receptor (CLEC-2) are turned in the spotlight since several new mechanisms and contributions to metastasis have been attributed to this family of platelet receptors in the last years.
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Loguinova M, Pinegina N, Kogan V, Vagida M, Arakelyan A, Shpektor A, Margolis L, Vasilieva E. Monocytes of Different Subsets in Complexes with Platelets in Patients with Myocardial Infarction. Thromb Haemost 2018; 118:1969-1981. [PMID: 30300910 DOI: 10.1055/s-0038-1673342] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Acute myocardial infarction (AMI) is associated with activation of various cells, including platelets that form monocyte-platelet complexes (MPCs). Here, we analysed MPC in vivo and in vitro and investigated the abilities of different monocyte subclasses to form MPC, the characteristics of the cells involved in MPC formation and MPC changes in AMI. We identified MPC by co-staining for platelet antigen CD41a and monocyte antigens CD14 and CD16. Platelet activation was evaluated from expression of phosphatidylserine as revealed by annexin V. Our results confirm published data and provide new information regarding the patterns of MPC in AMI patients. We found that the patterns of platelet aggregation with monocytes were different in AMI patients and controls: (1) in AMI patients, MPC formed by intermediate monocytes carry more platelets whereas in healthy controls more platelets aggregated with classical monocytes; (2) the numbers of MPC in AMI patients, being already higher than in controls, were further increased if these patients suffered various in-hospital complications; (3) on the basis of the CD41a fluorescence of the antibody-stained MPC, some of the aggregates seem to consist of monocytes and platelet-derived extracellular vesicles (EVs); (4) aggregation of monocytes with platelet EV occurred in in vitro experiments; and (5) these experiments demonstrated that monocytes from AMI patients aggregate with both platelets and platelet EVs more efficiently than do monocytes from controls. MPC in AMI patients may play an important role in this pathology.
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Affiliation(s)
- Marina Loguinova
- Laboratory of Atherothrombosis, Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Natalia Pinegina
- Laboratory of Atherothrombosis, Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Valeria Kogan
- Ariel University, Institute for Translational Research, Ariel, Israel
| | - Murad Vagida
- Laboratory of Atherothrombosis, Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Anush Arakelyan
- Section on Intercellular Interactions, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, United States
| | - Alexander Shpektor
- Laboratory of Atherothrombosis, Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Leonid Margolis
- Section on Intercellular Interactions, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, United States
| | - Elena Vasilieva
- Laboratory of Atherothrombosis, Moscow State University of Medicine and Dentistry, Moscow, Russia
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Abstract
This overview article for the Comprehensive Physiology collection is focused on detailing platelets, how platelets respond to various stimuli, how platelets interact with their external biochemical environment, and the role of platelets in physiological and pathological processes. Specifically, we will discuss the four major functions of platelets: activation, adhesion, aggregation, and inflammation. We will extend this discussion to include various mechanisms that can induce these functional changes and a discussion of some of the salient receptors that are responsible for platelets interacting with their external environment. We will finish with a discussion of how platelets interact with their vascular environment, with a special focus on interactions with the extracellular matrix and endothelial cells, and finally how platelets can aid and possibly initiate the progression of various vascular diseases. Throughout this overview, we will highlight both the historical investigations into the role of platelets in health and disease as well as some of the more current work. Overall, the authors aim for the readers to gain an appreciation for the complexity of platelet functions and the multifaceted role of platelets in the vascular system. © 2017 American Physiological Society. Compr Physiol 8:1117-1156, 2018.
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Affiliation(s)
- David A Rubenstein
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York, USA
| | - Wei Yin
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York, USA
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Role of CD40 and ADAMTS13 in von Willebrand factor-mediated endothelial cell-platelet-monocyte interaction. Proc Natl Acad Sci U S A 2018; 115:E5556-E5565. [PMID: 29793936 DOI: 10.1073/pnas.1801366115] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Monocyte extravasation into the vessel wall is a key step in atherogenesis. It is still elusive how monocytes transmigrate through the endothelial cell (EC) monolayer at atherosclerosis predilection sites. Platelets tethered to ultra-large von Willebrand factor (ULVWF) multimers deposited on the luminal EC surface following CD40 ligand (CD154) stimulation may facilitate monocyte diapedesis. Human ECs grown in a parallel plate flow chamber for live-cell imaging or Transwell permeable supports for transmigration assay were exposed to fluid or orbital shear stress and CD154. Human isolated platelets and/or monocytes were superfused over or added on top of the EC monolayer. Plasma levels and activity of the ULVWF multimer-cleaving protease ADAMTS13 were compared between coronary artery disease (CAD) patients and controls and were verified by the bioassay. Two-photon intravital microscopy was performed to monitor CD154-dependent leukocyte recruitment in the cremaster microcirculation of ADAMTS13-deficient versus wild-type mice. CD154-induced ULVWF multimer-platelet string formation on the EC surface trapped monocytes and facilitated transmigration through the EC monolayer despite high shear stress. Two-photon intravital microscopy revealed CD154-induced ULVWF multimer-platelet string formation preferentially in venules, due to strong EC expression of CD40, causing prominent downstream leukocyte extravasation. Plasma ADAMTS13 abundance and activity were significantly reduced in CAD patients and strongly facilitated both ULVWF multimer-platelet string formation and monocyte trapping in vitro. Moderate ADAMTS13 deficiency in CAD patients augments CD154-mediated deposition of platelet-decorated ULVWF multimers on the luminal EC surface, reinforcing the trapping of circulating monocytes at atherosclerosis predilection sites and promoting their diapedesis.
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Zamora C, Canto E, Nieto JC, Garcia-Planella E, Gordillo J, Ortiz MA, Suarez-Calvet X, Perea L, Julia G, Juarez C, Vidal S. Inverse Association Between Circulating Monocyte-Platelet Complexes and Inflammation in Ulcerative Colitis Patients. Inflamm Bowel Dis 2018. [PMID: 29529212 DOI: 10.1093/ibd/izx106] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Circulating monocytes from active ulcerative colitis (UC) patients produced high levels of tumor necrosis factor-alpha(TNFα) and interleukin(IL)-6 after Toll-like receptors (TLR) stimulation. Since platelets (PLT) can bind to leukocytes, thereby decreasing inflammatory cytokine production, UC patients may exhibit different levels of monocyte-platelet complexes depending on disease activity. METHODS We compared among healthy donors, active (onset flare and relapse), and inactive UC patients the presence of circulating monocyte-platelet complexes (CD14+PLT+) and membrane CD162 expression by flow cytometry. Lipopolysaccharide- binding protein, TNFα, and IL-10 were compared by ELISA. Binding of CD14+PLT+ to human umbilical vein endothelial cells (HUVECs) were analyzed by immunofluorescence. RESULTS Onset flare UC patients had the lowest levels of CD14+PLT+. Membrane CD162, crucial for the PLT binding, was downregulated only on monocytes from onset flare UC patients. Membrane CD162 expression on CD14+ cells inversely correlated with lipopolysaccharide binding protein levels. As an expected consequence, more CD14+PLT+ than CD14+PLT- from onset flare UC patients bound to activated HUVECs. TNFα tended to negatively correlate with CD14+PLT+ in relapse and inactive UC patients, whereas IL-10 positively correlated with CD14+PLT+ in all UC patients (r = -0.43, P = 0.1 and r = 0.61, P = 0.01, respectively). The anti-inflammatory role of PLT binding to monocytes was confirmed in cocultures of PLT and monocytes. These cocultures increased the percentage of CD14+PLT+ and IL-10 production, and decreased TNFα production. These anti-inflammatory effects were abolished when we blocked the binding of PLT with neutralizing anti-CD62P antibody. CONCLUSIONS Decreased CD162 expression associated with endotoxemia reduced the binding of PLT to monocytes through membrane CD162-CD62P, favoring the inflammatory response of onset flare UC patients.
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Affiliation(s)
- Carlos Zamora
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Elisabet Canto
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Juan C Nieto
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ester Garcia-Planella
- Gastroenterology and Hepatology Unit, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Jordi Gordillo
- Gastroenterology and Hepatology Unit, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Mª Angels Ortiz
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Xavier Suarez-Calvet
- Neuromuscular Diseases Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Institut de Recerca Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Lidia Perea
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Germà Julia
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Candido Juarez
- Dep. of Immunology Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Silvia Vidal
- Dep. of Immunology, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
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Preactivated and Disaggregated Shape-Changed Platelets Protected Against Acute Respiratory Distress Syndrome Complicated by Sepsis Through Inflammation Suppression. Shock 2018; 46:575-586. [PMID: 27058048 DOI: 10.1097/shk.0000000000000617] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND This study tested the hypothesis that preactivated and disaggregated shape-changed platelet (PreD-SCP) therapy attenuates lung injury from acute respiratory distress syndrome (ARDS) induced by 100% oxygen inhalation and complicated by sepsis through peritoneal administration of 1.5 mg/kg lipopolysaccharide (LPS). METHODS Adult male Sprague-Dawley rats, weighing 325 to 350 g, were randomized into group 1 (normal controls [NC]), group 2 (NC + PreD-SCP [3.0 × 10, intravenous administration]), group 3 (ARDS-LPS), and group 4 (ARDS-LPS + PreD-SCP), and sacrificed by 72 h after ARDS induction. RESULTS The lung injury score was significantly higher in group 3 than that in other groups, and significantly higher in group 4 than that in groups 1 and 2, whereas the numbers of alveolar sacs and oxygen saturation (%) showed a reversed pattern compared with that of lung injury score among the four groups (all P < 0.0001) without significant difference between groups 1 and 2. The expressions of proinflammatory cells (CD11+, CD14+, CD68+) and proteins (tumor necrosis factor [TNF]-α, nuclear factor [NF]-κB, interleukin [IL]-1ββ, matrix metalloproteinase [MMP]-9, inducible nitric oxide synthase, intercellular adhesion molecule-1) exhibited a pattern identical to the lung injury score. Circulating levels of white blood cell, IL-6, TNF-α, myeloperoxidase and CCL5, and pulmonary protein expressions of oxidative stress (NOX-1/NOX-2, oxidized protein), apoptotic (Bax, cleaved caspase 3/poly (ADP-ribose) polymerase), fibrotic (Smad3, transforming growth factor [TGF]-β), and DNA damage (γ-H2AX) biomarkers showed an identical pattern, whereas protein expressions of antifibrotic (Smad1/5, bone morphogenetic protein [BMP]-2) and anti-inflammatory (Bcl-2) biomarkers demonstrated an opposite pattern compared with the proinflammatory indices among the four groups (all P < 0.001). CONCLUSIONS PreD-SCP therapy effectively improved lung injury in ARDS complicated by sepsis.
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Fontaine MJ, Shih H, Schubert R, Wong W, Andrews J, Jeng M, Tirouvanziam R. Leukocyte and plasma activation profiles in chronically transfused patients with a history of allergic reactions. Transfusion 2017; 57:2639-2648. [PMID: 28880378 DOI: 10.1111/trf.14275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 05/25/2017] [Accepted: 06/26/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Allergic transfusion reactions are drawbacks to the benefits of transfusion. Classically, allergic transfusion reactions depend on histamine release from mast cells or basophils, but other leukocyte subsets may also be important. Thus, we propose to better define the exact leukocyte subsets involved in allergic transfusion reactions. STUDY DESIGN AND METHODS The overall objective of the current study was to compare the activation of specific peripheral blood leukocyte subsets (monocytes, neutrophils, eosinophils, and basophils) in a cohort of 13 patients who received chronic transfusions and had a history of allergic transfusion reactions compared with a control group of patients who received chronic transfusions and had no history of allergic transfusion reactions. Leukocyte subsets were analyzed by flow cytometry at baseline and after red blood cell transfusion, and cytokine levels in platelet-free plasma collected at the same time points were measured by Luminex assay. RESULTS Flow cytometry and cytokine profiles before and after transfusion did not differ significantly between patients who did and did not have a history of allergic transfusion reactions (p > 0.05). However, post-transfusion samples from both groups showed a decrease in CD63 expression in basophils, monocytes, and eosinophils and a decrease in CD45 expression in all leukocyte subsets compared with pretransfusion samples. Interleukin 10 levels increased after transfusion in the group with a history of allergic transfusion reactions (p = 0.0469), and RANTES (regulated upon activation, normal T-cell expressed and secreted) was significantly decreased post-transfusion in all patients (p = 0.0122). CONCLUSION None of the leukocyte subsets from patients who had a history of allergic transfusion reactions significantly increased in activation either before or after transfusion. All leukocyte subsets from patients who did and did not have a history of allergic transfusion reactions decreased in their activation profile upon transfusion challenge.
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Affiliation(s)
- Magali J Fontaine
- Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Hank Shih
- Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Richard Schubert
- Department of Pathology, Stanford School of Medicine, Stanford, Callifornia
| | - Wendy Wong
- Department of Pediatrics, Stanford School of Medicine, Stanford, Callifornia
| | - Jennifer Andrews
- Department of Pathology, Stanford School of Medicine, Stanford, Callifornia.,Department of Pediatrics, Stanford School of Medicine, Stanford, Callifornia
| | - Michael Jeng
- Department of Pediatrics, Stanford School of Medicine, Stanford, Callifornia
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Connor R, Jones LD, Qiu X, Thakar J, Maggirwar SB. Frontline Science: c-Myc regulates P-selectin glycoprotein ligand-1 expression in monocytes during HIV-1 infection. J Leukoc Biol 2017; 102:953-964. [PMID: 28663244 DOI: 10.1189/jlb.6hi0217-043r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/20/2017] [Accepted: 05/14/2017] [Indexed: 12/18/2022] Open
Abstract
Leukocyte extravasation is a crucial feature of the normal immune response to disease and infection and is implicated in various pathologies during chronic inflammatory disease. P-Selectin glycoprotein ligand-1 (PSGL-1) is critical for leukocyte extravasation; however, despite extensive study, it remains unclear how its expression is regulated, which in turn, impedes a more precise understanding of how its expression level affects transmigration. To investigate the regulation of PSGL-1, 60 subjects, with or without HIV infection, were recruited and PSGL-1 expression in monocytes was measured. PSGL-1 was found to be up-regulated on leukocytes from HIV-infected individuals, and the physiologically relevant mediators soluble CD40 ligand (sCD40L) and glutamate were able to induce PSGL-1 transcription in human monocytes ex vivo. HIV-1 induced PSGL-1 induction, and its dependence on CD40L was validated further by use of the mouse-tropic HIV (EcoHIV) mouse model of HIV infection in C57BL/6 and CD40L knockout (KO) mice. To investigate crosstalk between the signaling cascades induced by CD40L and glutamate that lead to PSGL-1 induction, a network-based, discrete dynamic model was developed. The model reveals the MAPK pathway and oxidative stress as critical mediators of crosstalk between CD40L and glutamate-induced pathways. Importantly, the model predicted induction of the c-Myc transcription factor upon cotreatment, which was validated using transcriptomic data and pharmacologic inhibition of c-Myc. This study suggests a novel systems serology approach for translational research and reveals a mechanism for PSGL-1 transcriptional regulation, which might be leveraged to identify novel targets for therapeutic intervention.
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Affiliation(s)
- Ryan Connor
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
| | - Letitia D Jones
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
| | - Xing Qiu
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, New York, USA
| | - Juilee Thakar
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA; .,Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, New York, USA
| | - Sanjay B Maggirwar
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA;
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Vajen T, Benedikter BJ, Heinzmann ACA, Vasina EM, Henskens Y, Parsons M, Maguire PB, Stassen FR, Heemskerk JWM, Schurgers LJ, Koenen RR. Platelet extracellular vesicles induce a pro-inflammatory smooth muscle cell phenotype. J Extracell Vesicles 2017; 6:1322454. [PMID: 28717419 PMCID: PMC5505004 DOI: 10.1080/20013078.2017.1322454] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Indexed: 01/25/2023] Open
Abstract
Extracellular vesicles (EVs) are mediators of cell communication during health and disease, and abundantly released by platelets upon activation or during ageing. Platelet EVs exert modulatory effects on immune and vascular cells. Platelet EVs may modulate the function of vascular smooth muscle cells (SMC). Platelet EVs were isolated from platelet-rich plasma and incubated with SMC in order to assess binding, proliferation, migration and pro-inflammatory phenotype of the cells. Platelet EVs firmly bound to resting SMC through the platelet integrin αIIbβ3, while binding also occurred in a CX3CL1–CX3CR1-dependent manner after cytokine stimulation. Platelet EVs increased SMC migration comparable to platelet derived growth factor or platelet factor 4 and induced SMC proliferation, which relied on CD40- and P-selectin interactions. Flow-resistant monocyte adhesion to platelet EV-treated SMC was increased compared with resting SMC. Again, this adhesion depended on integrin αIIbβ3 and P-selectin, and to a lesser extent on CD40 and CX3CR1. Treatment of SMC with platelet EVs induced interleukin 6 secretion. Finally, platelet EVs induced a synthetic SMC morphology and decreased calponin expression. Collectively, these data indicate that platelet EVs exert a strong immunomodulatory activity on SMC. In particular, platelet EVs induce a switch towards a pro-inflammatory phenotype, stimulating vascular remodelling.
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Affiliation(s)
- Tanja Vajen
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Birke J Benedikter
- Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands.,Department of Respiratory Medicine, School of Nutrition and Transtional Research in Medicine (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Alexandra C A Heinzmann
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Elena M Vasina
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Yvonne Henskens
- Central Diagnostic Laboratory, Maastricht University Medical Centre (MUMC+), Maastricht University, Maastricht, The Netherlands
| | - Martin Parsons
- UCD Conway Institute, School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland
| | - Patricia B Maguire
- UCD Conway Institute, School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland
| | - Frank R Stassen
- Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Johan W M Heemskerk
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Leon J Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Rory R Koenen
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands.,Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University (LMU), München, Germany
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50
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Kim MY, Cho JY. Molecular association of CD98, CD29, and CD147 critically mediates monocytic U937 cell adhesion. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2016; 20:515-23. [PMID: 27610038 PMCID: PMC5014998 DOI: 10.4196/kjpp.2016.20.5.515] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/05/2016] [Accepted: 07/25/2016] [Indexed: 12/15/2022]
Abstract
Adhesion events of monocytes represent an important step in inflammatory responses induced by chemokines. The β1-integrin CD29 is a major adhesion molecule regulating leukocyte migration and extravasation. Although several adhesion molecules have been known as regulators of CD29, the molecular interactions between CD29 and its regulatory adhesion molecules (such as CD98 and CD147) have not been fully elucidated. Therefore, in this study, we examined whether these molecules are functionally, biochemically, and cell-biologically associated using monocytic U937 cells treated with aggregation-stimulating and blocking antibodies, as well as enzyme inhibitors. The surface levels of CD29, CD98, and CD147 (but not CD43, CD44, and CD82) were increased. The activation of CD29, CD98, and CD147 by ligation of them with aggregation-activating antibodies triggered the induction of cell-cell adhesion, and sensitivity to various enzyme inhibitors and aggregation-blocking antibodies was similar for CD29-, CD98-, and CD147-induced U937 cell aggregation. Molecular association between these molecules and the actin cytoskeleton was confirmed by confocal microscopy and immunoprecipitation. These results strongly suggest that CD29 might be modulated by its biochemical and cellular regulators, including CD98 and CD147, via the actin cytoskeleton.
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Affiliation(s)
- Mi-Yeon Kim
- School of Systems Biomedical Science, Soongsil University, Seoul 06978, Korea
| | - Jae Youl Cho
- Depatment of Genetic Engineering, Sungkyunkwan University, Suwon 16419, Korea
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