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Zhang N, Tang W, Torres L, Wang X, Ajaj Y, Zhu L, Luan Y, Zhou H, Wang Y, Zhang D, Kurbatov V, Khan SA, Kumar P, Hidalgo A, Wu D, Lu J. Cell surface RNAs control neutrophil recruitment. Cell 2024; 187:846-860.e17. [PMID: 38262409 PMCID: PMC10922858 DOI: 10.1016/j.cell.2023.12.033] [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: 03/27/2023] [Revised: 10/30/2023] [Accepted: 12/28/2023] [Indexed: 01/25/2024]
Abstract
RNAs localizing to the outer cell surface have been recently identified in mammalian cells, including RNAs with glycan modifications known as glycoRNAs. However, the functional significance of cell surface RNAs and their production are poorly known. We report that cell surface RNAs are critical for neutrophil recruitment and that the mammalian homologs of the sid-1 RNA transporter are required for glycoRNA expression. Cell surface RNAs can be readily detected in murine neutrophils, the elimination of which substantially impairs neutrophil recruitment to inflammatory sites in vivo and reduces neutrophils' adhesion to and migration through endothelial cells. Neutrophil glycoRNAs are predominantly on cell surface, important for neutrophil-endothelial interactions, and can be recognized by P-selectin (Selp). Knockdown of the murine Sidt genes abolishes neutrophil glycoRNAs and functionally mimics the loss of cell surface RNAs. Our data demonstrate the biological importance of cell surface glycoRNAs and highlight a noncanonical dimension of RNA-mediated cellular functions.
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Affiliation(s)
- Ningning Zhang
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Wenwen Tang
- Vascular Biology and Therapeutics Program and Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Lidiane Torres
- Department of Cell Biology and Ruth L. and David S. Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, New York, NY 10461, USA
| | - Xujun Wang
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Yasmeen Ajaj
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Li Zhu
- Department of Internal Medicine, Section of Infectious Diseases, Yale University School of Medicine, New Haven CT 06511
| | - Yi Luan
- Vascular Biology and Therapeutics Program and Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Hongyue Zhou
- Vascular Biology and Therapeutics Program and Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Yadong Wang
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Yale Cooperative Center of Excellence in Hematology, New Haven, CT 12208, USA
| | - Dingyao Zhang
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Computational Biology and Bioinformatics Graduate Program, Yale University, New Haven, CT 06520, USA
| | - Vadim Kurbatov
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Surgery, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Sajid A Khan
- Department of Surgery, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Priti Kumar
- Department of Internal Medicine, Section of Infectious Diseases, Yale University School of Medicine, New Haven CT 06511
| | - Andres Hidalgo
- Vascular Biology and Therapeutics Program and Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06519, USA; Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Dianqing Wu
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program and Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06519, USA; Yale Cancer Center, New Haven, CT 06520, USA.
| | - Jun Lu
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Yale Cooperative Center of Excellence in Hematology, New Haven, CT 12208, USA; Yale Cancer Center, New Haven, CT 06520, USA; Yale Center for RNA Science and Medicine, New Haven, CT 06520, USA.
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2
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Goth CK, Mehta AY, McQuillan AM, Baker KJ, Hanes MS, Park SS, Stavenhagen K, Hjortø GM, Heimburg-Molinaro J, Chaikof EL, Rosenkilde MM, Cummings RD. Chemokine binding to PSGL-1 is controlled by O-glycosylation and tyrosine sulfation. Cell Chem Biol 2023; 30:893-905.e7. [PMID: 37463583 PMCID: PMC10530560 DOI: 10.1016/j.chembiol.2023.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 03/14/2023] [Accepted: 06/14/2023] [Indexed: 07/20/2023]
Abstract
Protein glycosylation influences cellular recognition and regulates protein interactions, but how glycosylation functions alongside other common posttranslational modifications (PTMs), like tyrosine sulfation (sTyr), is unclear. We produced a library of 53 chemoenzymatically synthesized glycosulfopeptides representing N-terminal domains of human and murine P-selectin glycoprotein ligand-1 (PSGL-1), varying in sTyr and O-glycosylation (structure and site). Using these, we identified key roles of PSGL-1 O-glycosylation and sTyr in controlling interactions with specific chemokines. Results demonstrate that sTyr positively affects CCL19 and CCL21 binding to PSGL-1 N terminus, whereas O-glycan branching and sialylation reduced binding. For murine PSGL-1, interference between PTMs is greater, attributed to proximity between the two PTMs. Using fluorescence polarization, we found sTyr is a positive determinant for some chemokines. We showed that synthetic sulfopeptides are potent in decreasing chemotaxis of human dendritic cells toward CCL19 and CCL21. Our results provide new research avenues into the interplay of PTMs regulating leukocyte/chemokine interactions.
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Affiliation(s)
- Christoffer K Goth
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA; Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Akul Y Mehta
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Alyssa M McQuillan
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Kelly J Baker
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Melinda S Hanes
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Simon S Park
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Kathrin Stavenhagen
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Gertrud M Hjortø
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA
| | - Mette M Rosenkilde
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA 02215, USA.
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3
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Li J, Qiu Y, Zhang C, Wang H, Bi R, Wei Y, Li Y, Hu B. The role of protein glycosylation in the occurrence and outcome of acute ischemic stroke. Pharmacol Res 2023; 191:106726. [PMID: 36907285 DOI: 10.1016/j.phrs.2023.106726] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/12/2023]
Abstract
Acute ischemic stroke (AIS) is a serious and life-threatening disease worldwide. Despite thrombolysis or endovascular thrombectomy, a sizeable fraction of patients with AIS have adverse clinical outcomes. In addition, existing secondary prevention strategies with antiplatelet and anticoagulant drugs therapy are not able to adequately decrease the risk of ischemic stroke recurrence. Thus, exploring novel mechanisms for doing so represents an urgent need for the prevention and treatment of AIS. Recent studies have discovered that protein glycosylation plays a critical role in the occurrence and outcome of AIS. As a common co- and post-translational modification, protein glycosylation participates in a wide variety of physiological and pathological processes by regulating the activity and function of proteins or enzymes. Protein glycosylation is involved in two causes of cerebral emboli in ischemic stroke: atherosclerosis and atrial fibrillation. Following ischemic stroke, the level of brain protein glycosylation becomes dynamically regulated, which significantly affects stroke outcome through influencing inflammatory response, excitotoxicity, neuronal apoptosis, and blood-brain barrier disruption. Drugs targeting glycosylation in the occurrence and progression of stroke may represent a novel therapeutic idea. In this review, we focus on possible perspectives about how glycosylation affects the occurrence and outcome of AIS. We then propose the potential of glycosylation as a therapeutic drug target and prognostic marker for AIS patients in the future.
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Affiliation(s)
- Jianzhuang Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanmei Qiu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunlin Zhang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hailing Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rentang Bi
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanhao Wei
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanan Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Bo Hu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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4
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Petzold T, Zhang Z, Ballesteros I, Saleh I, Polzin A, Thienel M, Liu L, Ul Ain Q, Ehreiser V, Weber C, Kilani B, Mertsch P, Götschke J, Cremer S, Fu W, Lorenz M, Ishikawa-Ankerhold H, Raatz E, El-Nemr S, Görlach A, Marhuenda E, Stark K, Pircher J, Stegner D, Gieger C, Schmidt-Supprian M, Gaertner F, Almendros I, Kelm M, Schulz C, Hidalgo A, Massberg S. Neutrophil "plucking" on megakaryocytes drives platelet production and boosts cardiovascular disease. Immunity 2022; 55:2285-2299.e7. [PMID: 36272416 PMCID: PMC9767676 DOI: 10.1016/j.immuni.2022.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 08/23/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022]
Abstract
Intravascular neutrophils and platelets collaborate in maintaining host integrity, but their interaction can also trigger thrombotic complications. We report here that cooperation between neutrophil and platelet lineages extends to the earliest stages of platelet formation by megakaryocytes in the bone marrow. Using intravital microscopy, we show that neutrophils "plucked" intravascular megakaryocyte extensions, termed proplatelets, to control platelet production. Following CXCR4-CXCL12-dependent migration towards perisinusoidal megakaryocytes, plucking neutrophils actively pulled on proplatelets and triggered myosin light chain and extracellular-signal-regulated kinase activation through reactive oxygen species. By these mechanisms, neutrophils accelerate proplatelet growth and facilitate continuous release of platelets in steady state. Following myocardial infarction, plucking neutrophils drove excessive release of young, reticulated platelets and boosted the risk of recurrent ischemia. Ablation of neutrophil plucking normalized thrombopoiesis and reduced recurrent thrombosis after myocardial infarction and thrombus burden in venous thrombosis. We establish neutrophil plucking as a target to reduce thromboischemic events.
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Affiliation(s)
- Tobias Petzold
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Corresponding author
| | - Zhe Zhang
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Iván Ballesteros
- Program of Cardiovascular Regeneration, Fundación Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
| | - Inas Saleh
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Amin Polzin
- Department of Cardiology, Pulmonology and Vascular Medicine, Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty of the Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Manuela Thienel
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Lulu Liu
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Qurrat Ul Ain
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Vincent Ehreiser
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Christian Weber
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Badr Kilani
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Pontus Mertsch
- Medizinische Klinik und Poliklinik V, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), 81377 Munich, Germany
| | - Jeremias Götschke
- Medizinische Klinik und Poliklinik V, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), 81377 Munich, Germany
| | - Sophie Cremer
- Department of Cardiology, Pulmonology and Vascular Medicine, Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty of the Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Wenwen Fu
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Michael Lorenz
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Hellen Ishikawa-Ankerhold
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Elisabeth Raatz
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Shaza El-Nemr
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Agnes Görlach
- Experimental and Molecular Pediatric Cardiology, German Heart Center Munich at the Technical University of Munich, 80636 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany
| | - Esther Marhuenda
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, 08007 Barcelona, Spain
| | - Konstantin Stark
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Joachim Pircher
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - David Stegner
- Institute of Experimental Biomedicine, University Hospital Würzburg and Rudolf Virchow Center for Integrative and Translational Bioimaging, 97070 Würzburg, Germany
| | - Christian Gieger
- Research Unit Molecular Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, 85764 Neuherberg, Germany,Institute of Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, 85764 Neuherberg, Germany,German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
| | - Marc Schmidt-Supprian
- Institute of Experimental Hematology, School of Medicine, Technical University Munich, 80333 Munich, Germany,Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69117 Heidelberg, Germany
| | - Florian Gaertner
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria
| | - Isaac Almendros
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, 08007 Barcelona, Spain,CIBER de Enfermedades Respiratorias, 28029 Madrid, Spain
| | - Malte Kelm
- Department of Cardiology, Pulmonology and Vascular Medicine, Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty of the Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Christian Schulz
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany
| | - Andrés Hidalgo
- Program of Cardiovascular Regeneration, Fundación Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain,Vascular Biology and Therapeutics Program and Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Steffen Massberg
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Partner site Munich Heart Alliance, DZHK (German Centre for Cardiovascular Research), 80802 Munich, Germany,Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, Klinikum der Universität München, Ludwig-Maximilians- University Munich, 81377 Munich, Germany,Corresponding author
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5
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Cappenberg A, Kardell M, Zarbock A. Selectin-Mediated Signaling-Shedding Light on the Regulation of Integrin Activity in Neutrophils. Cells 2022; 11:cells11081310. [PMID: 35455989 PMCID: PMC9025114 DOI: 10.3390/cells11081310] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 02/04/2023] Open
Abstract
As a consequence of tissue injury or infection, neutrophils are recruited in a stepwise recruitment process from the bloodstream into the surrounding tissue. Selectins are a family of adhesion molecules comprised of L-, E-, and P-selectin. Differences in expression patterns, protein structure, and ligand binding characteristics mediate distinct functions of each selectin. Interactions of selectins and their counter-receptors mediate the first contact of neutrophils with the endothelium, as well as subsequent neutrophil rolling along the endothelial surface. For efficient neutrophil recruitment, activation of β2-integrins on the cell surface is essential. Integrin activation can be elicited via selectin- as well as chemokine-mediated inside-out signaling resulting in integrin conformational changes and clustering. Dysregulation of selectin-induced integrin activation on neutrophils is involved in the development of severe pathological disease conditions including leukocyte adhesion deficiency (LAD) syndromes in humans. Here, we review molecular mechanisms involved in selectin-mediated signaling pathways in neutrophils and their impact on integrin activation, neutrophil recruitment, and inflammatory diseases.
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6
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Liu W, Hsu AY, Wang Y, Lin T, Sun H, Pachter JS, Groisman A, Imperioli M, Yungher FW, Hu L, Wang P, Deng Q, Fan Z. Mitofusin-2 regulates leukocyte adhesion and β2 integrin activation. J Leukoc Biol 2021; 111:771-791. [PMID: 34494308 DOI: 10.1002/jlb.1a0720-471r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Neutrophils are critical for inflammation and innate immunity, and their adhesion to vascular endothelium is a crucial step in neutrophil recruitment. Mitofusin-2 (MFN2) is required for neutrophil adhesion, but molecular details are unclear. Here, we demonstrated that β2 -integrin-mediated slow-rolling and arrest, but not PSGL-1-mediated cell rolling, are defective in MFN2-deficient neutrophil-like HL60 cells. This adhesion defect is associated with reduced expression of fMLP (N-formylmethionyl-leucyl-phenylalanine) receptor FPR1 as well as the inhibited β2 integrin activation, as assessed by conformation-specific monoclonal antibodies. MFN2 deficiency also leads to decreased actin polymerization, which is important for β2 integrin activation. Mn2+ -induced cell spreading is also inhibited after MFN2 knockdown. MFN2 deficiency limited the maturation of β2 integrin activation during the neutrophil-directed differentiation of HL60 cells, which is indicated by CD35 and CD87 markers. MFN2 knockdown in β2-integrin activation-matured cells (CD87high population) also inhibits integrin activation, indicating that MFN2 directly affects β2 integrin activation. Our study illustrates the function of MFN2 in leukocyte adhesion and may provide new insights into the development and treatment of MFN2 deficiency-related diseases.
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Affiliation(s)
- Wei Liu
- Department of Immunology, School of Medicine, UConn Health, Farmington, Connecticut, USA
| | - Alan Y Hsu
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA
| | - Yueyang Wang
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA
| | - Tao Lin
- Department of Immunology, School of Medicine, UConn Health, Farmington, Connecticut, USA
| | - Hao Sun
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Joel S Pachter
- Department of Immunology, School of Medicine, UConn Health, Farmington, Connecticut, USA
| | - Alex Groisman
- Department of Physics, University of California San Diego, La Jolla, California, USA
| | | | | | - Liang Hu
- Cardiovascular Institute of Zhengzhou University, Department of Cardiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Penghua Wang
- Department of Immunology, School of Medicine, UConn Health, Farmington, Connecticut, USA
| | - Qing Deng
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA.,Purdue Institute for Inflammation, Immunology, & Infectious Disease, Purdue University, West Lafayette, Indiana, USA.,Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA
| | - Zhichao Fan
- Department of Immunology, School of Medicine, UConn Health, Farmington, Connecticut, USA
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7
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DeRogatis JM, Viramontes KM, Neubert EN, Tinoco R. PSGL-1 Immune Checkpoint Inhibition for CD4 + T Cell Cancer Immunotherapy. Front Immunol 2021; 12:636238. [PMID: 33708224 PMCID: PMC7940186 DOI: 10.3389/fimmu.2021.636238] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/04/2021] [Indexed: 01/15/2023] Open
Abstract
Immune checkpoint inhibition targeting T cells has shown tremendous promise in the treatment of many cancer types and are now standard therapies for patients. While standard therapies have focused on PD-1 and CTLA-4 blockade, additional immune checkpoints have shown promise in promoting anti-tumor immunity. PSGL-1, primarily known for its role in cellular migration, has also been shown to function as a negative regulator of CD4+ T cells in numerous disease settings including cancer. PSGL-1 is highly expressed on T cells and can engage numerous ligands that impact signaling pathways, which may modulate CD4+ T cell differentiation and function. PSGL-1 engagement in the tumor microenvironment may promote CD4+ T cell exhaustion pathways that favor tumor growth. Here we highlight that blocking the PSGL-1 pathway on CD4+ T cells may represent a new cancer therapy approach to eradicate tumors.
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Affiliation(s)
| | | | | | - Roberto Tinoco
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
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8
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Kulkarni R, Kale V. Physiological Cues Involved in the Regulation of Adhesion Mechanisms in Hematopoietic Stem Cell Fate Decision. Front Cell Dev Biol 2020; 8:611. [PMID: 32754597 PMCID: PMC7366553 DOI: 10.3389/fcell.2020.00611] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 06/19/2020] [Indexed: 12/16/2022] Open
Abstract
Hematopoietic stem cells (HSC) could have several fates in the body; viz. self-renewal, differentiation, migration, quiescence, and apoptosis. These fate decisions play a crucial role in maintaining homeostasis and critically depend on the interaction of the HSCs with their micro-environmental constituents. However, the physiological cues promoting these interactions in vivo have not been identified to a great extent. Intense research using various in vitro and in vivo models is going on in various laboratories to understand the mechanisms involved in these interactions, as understanding of these mechanistic would greatly help in improving clinical transplantations. However, though these elegant studies have identified the molecular interactions involved in the process, harnessing these interactions to the recipients' benefit would ultimately depend on manipulation of environmental cues initiating them in vivo: hence, these need to be identified at the earliest. HSCs reside in the bone marrow, which is a very complex tissue comprising of various types of stromal cells along with their secreted cytokines, extra-cellular matrix (ECM) molecules and extra-cellular vesicles (EVs). These components control the HSC fate decision through direct cell-cell interactions - mediated via various types of adhesion molecules -, cell-ECM interactions - mediated mostly via integrins -, or through soluble mediators like cytokines and EVs. This could be a very dynamic process involving multiple transient interactions acting concurrently or sequentially, and the adhesion molecules involved in various fate determining situations could be different. If the switch mechanisms governing these dynamic states in vivo are identified, they could be harnessed for the development of novel therapeutics. Here, in addition to reviewing the adhesion molecules involved in the regulation of HSCs, we also touch upon recent advances in our understanding of the physiological cues known to initiate specific adhesive interactions of HSCs with the marrow stromal cells or ECM molecules and EVs secreted by them.
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Affiliation(s)
- Rohan Kulkarni
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
| | - Vaijayanti Kale
- Symbiosis Centre for Stem Cell Research, Symbiosis International University, Pune, India
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9
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Cleary SJ, Hobbs C, Amison RT, Arnold S, O'Shaughnessy BG, Lefrançais E, Mallavia B, Looney MR, Page CP, Pitchford SC. LPS-induced Lung Platelet Recruitment Occurs Independently from Neutrophils, PSGL-1, and P-Selectin. Am J Respir Cell Mol Biol 2020; 61:232-243. [PMID: 30768917 DOI: 10.1165/rcmb.2018-0182oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Platelets are recruited to inflammatory foci and contribute to host defense and inflammatory responses. Compared with platelet recruitment in hemostasis and thrombosis, the mechanisms of platelet recruitment in inflammation and host defense are poorly understood. Neutrophil recruitment to lung airspaces after inhalation of bacterial LPS requires platelets and PSGL-1 in mice. Given this association between platelets and neutrophils, we investigated whether recruitment of platelets to lungs of mice after LPS inhalation was dependent on PSGL-1, P-selectin, or interaction with neutrophils. BALB/c mice were administered intranasal LPS (O55:B5, 5 mg/kg) and, 48 hours later, lungs were collected and platelets and neutrophils quantified in tissue sections by immunohistochemistry. The effects of functional blocking antibody treatments targeting the platelet-neutrophil adhesion molecules, P-selectin or PSGL-1, or treatment with a neutrophil-depleting antibody targeting Ly6G, were tested on the extent of LPS-induced lung platelet recruitment. Separately in Pf4-Cre × mTmG mice, two-photon intravital microscopy was used to image platelet adhesion in live lungs. Inhalation of LPS caused both platelet and neutrophil recruitment to the lung vasculature. However, decreasing lung neutrophil recruitment by blocking PSGL-1, P-selectin, or depleting blood neutrophils had no effect on lung platelet recruitment. Lung intravital imaging revealed increased adhesion of platelets in the lung microvasculature which was not associated with thrombus formation. In conclusion, platelet recruitment to lungs in response to LPS occurs through mechanisms distinct from those mediating neutrophil recruitment, or the occurrence of pulmonary emboli.
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Affiliation(s)
- Simon J Cleary
- 1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science and
| | - Carl Hobbs
- 2the Wolfson Centre for Age-Related Diseases, King's College London, London, United Kingdom; and
| | - Richard T Amison
- 1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science and
| | - Stephanie Arnold
- 1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science and
| | - Blaze G O'Shaughnessy
- 1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science and
| | - Emma Lefrançais
- 3Department of Medicine, University of California San Francisco, San Francisco, California
| | - Beñat Mallavia
- 3Department of Medicine, University of California San Francisco, San Francisco, California
| | - Mark R Looney
- 3Department of Medicine, University of California San Francisco, San Francisco, California
| | - Clive P Page
- 1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science and
| | - Simon C Pitchford
- 1Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science and
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10
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Endothelial signaling by neutrophil-released oncostatin M enhances P-selectin-dependent inflammation and thrombosis. Blood Adv 2020; 3:168-183. [PMID: 30670533 DOI: 10.1182/bloodadvances.2018026294] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/13/2018] [Indexed: 12/25/2022] Open
Abstract
In the earliest phase of inflammation, histamine and other agonists rapidly mobilize P-selectin to the apical membranes of endothelial cells, where it initiates rolling adhesion of flowing neutrophils. Clustering of P-selectin in clathrin-coated pits facilitates rolling. Inflammatory cytokines typically signal by regulating gene transcription over a period of hours. We found that neutrophils rolling on P-selectin secreted the cytokine oncostatin M (OSM). The released OSM triggered signals through glycoprotein 130 (gp130)-containing receptors on endothelial cells that, within minutes, further clustered P-selectin and markedly enhanced its adhesive function. Antibodies to OSM or gp130, deletion of the gene encoding OSM in hematopoietic cells, or conditional deletion of the gene encoding gp130 in endothelial cells inhibited neutrophil rolling on P-selectin in trauma-stimulated venules of the mouse cremaster muscle. In a mouse model of P-selectin-dependent deep vein thrombosis, deletion of OSM in hematopoietic cells or of gp130 in endothelial cells markedly inhibited adhesion of neutrophils and monocytes and the rate and extent of thrombus formation. Our results reveal a paracrine-signaling mechanism by which neutrophil-released OSM rapidly influences endothelial cell function during physiological and pathological inflammation.
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11
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Kany S, Janicova A, Relja B. Innate Immunity and Alcohol. J Clin Med 2019; 8:jcm8111981. [PMID: 31739600 PMCID: PMC6912266 DOI: 10.3390/jcm8111981] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/11/2019] [Accepted: 11/11/2019] [Indexed: 02/07/2023] Open
Abstract
The innate immunity has evolved during millions of years, and thus, equivalent or comparable components are found in most vertebrates, invertebrates, and even plants. It constitutes the first line of defense against molecules, which are either pathogen-derived or a danger signal themselves, and not seldom both. These molecular patterns are comprised of highly conserved structures, a common trait in innate immunity, and constitute very potent triggers for inflammation mediated via extracellular or intracellular pattern recognition receptors. Human culture is often interweaved with the consumption of alcohol, in both drinking habits, its acute or chronical misuse. Apart from behavioral effects as often observed in intoxicated individuals, alcohol consumption also leads to immunological modulation on the humoral and cellular levels. In the last 20 years, major advances in this field of research have been made in clinical studies, as well as in vitro and in vivo research. As every physician will experience intoxicated patients, it is important to be aware of the changes that this cohort undergoes. This review will provide a summary of the current knowledge on the influence of alcohol consumption on certain factors of innate immunity after a hit, followed by the current studies that display the effect of alcohol with a description of the model, the mode of alcohol administration, as well as its dose. This will provide a way for the reader to evaluate the findings presented.
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12
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Xu X, Xu J, Wu J, Hu Y, Han Y, Gu Y, Zhao K, Zhang Q, Liu X, Liu J, Liu B, Cao X. Phosphorylation-Mediated IFN-γR2 Membrane Translocation Is Required to Activate Macrophage Innate Response. Cell 2018; 175:1336-1351.e17. [PMID: 30318148 DOI: 10.1016/j.cell.2018.09.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 08/04/2018] [Accepted: 09/07/2018] [Indexed: 01/20/2023]
Abstract
As a critical step during innate response, the cytoplasmic β subunit (IFN-γR2) of interferon-γ receptor (IFN-γR) is induced and translocates to plasma membrane to join α subunit to form functional IFN-γR to mediate IFN-γ signaling. However, the mechanism driving membrane translocation and its significance remain largely unknown. We found, unexpectedly, that mice deficient in E-selectin, an endothelial cell-specific adhesion molecule, displayed impaired innate activation of macrophages upon Listeria monocytogenes infection yet had increased circulating IFN-γ. Inflammatory macrophages from E-selectin-deficient mice had less surface IFN-γR2 and impaired IFN-γ signaling. BTK elicited by extrinsic E-selectin engagement phosphorylates cytoplasmic IFN-γR2, facilitating EFhd2 binding and promoting IFN-γR2 trafficking from Golgi to cell membrane. Our findings demonstrate that membrane translocation of cytoplasmic IFN-γR2 is required to activate macrophage innate response against intracellular bacterial infection, identifying the assembly of functional cytokine receptors on cell membrane as an important layer in innate activation and cytokine signaling.
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Affiliation(s)
- Xiaoqing Xu
- Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China; National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China
| | - Jia Xu
- Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China
| | - Jiacheng Wu
- Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China
| | - Ye Hu
- Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China
| | - Yanmei Han
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China
| | - Yan Gu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China
| | - Kai Zhao
- Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China
| | - Qian Zhang
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China
| | - Xingguang Liu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China
| | - Juan Liu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China
| | - Bing Liu
- Translational Medicine Center, Academy of Military Medical Sciences, 100024 Beijing, China
| | - Xuetao Cao
- Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China; National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, 200433 Shanghai, China; College of Life Science, Nankai University, 300071 Tianjin, China.
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13
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Yago T, Liu Z, Ahamed J, McEver RP. Cooperative PSGL-1 and CXCR2 signaling in neutrophils promotes deep vein thrombosis in mice. Blood 2018; 132:1426-1437. [PMID: 30068506 PMCID: PMC6161769 DOI: 10.1182/blood-2018-05-850859] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/26/2018] [Indexed: 02/07/2023] Open
Abstract
Inflammation is a major contributor to deep vein thrombosis (DVT). Flow restriction of the inferior vena cava (IVC) in mice induces DVT like that in humans. In this model, P-selectin-dependent adhesion of neutrophils and monocytes leads to release of neutrophil extracellular traps (NETs) and expression of tissue factor. However, it is not known what signals cause myeloid cells to generate these procoagulant effectors. Using ultrasonography and spinning-disk intravital microscopy in genetically engineered mice, we found that engagement of P-selectin glycoprotein ligand-1 (PSGL-1) and the chemokine receptor CXCR2 on rolling neutrophils propagated signals that cooperated to induce β2 integrin-dependent arrest in flow-restricted IVCs. Unlike previous reports, PSGL-1 signaling in neutrophils did not require L-selectin, and it used tyrosine 145 rather than tyrosines 112 and 128 on the adaptor Src homology domain-containing leukocyte phosphoprotein of 76 kDa. PSGL-1 and CXCR2 signaling cooperated to increase the frequency and size of thrombi, in part by stimulating release of NETs. Unlike in neutrophils, blocking PSGL-1 or CXCR2 signaling in monocytes did not affect their recruitment into thrombi or their expression of tissue factor. Our results demonstrate that neutrophils cooperatively signal through PSGL-1 and CXCR2 to promote DVT.
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Affiliation(s)
- Tadayuki Yago
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK; and
| | - Zhenghui Liu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK; and
| | - Jasimuddin Ahamed
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK; and
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Rodger P McEver
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK; and
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK
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14
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15
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Bime C, Pouladi N, Sammani S, Batai K, Casanova N, Zhou T, Kempf CL, Sun X, Camp SM, Wang T, Kittles RA, Lussier YA, Jones TK, Reilly JP, Meyer NJ, Christie JD, Karnes JH, Gonzalez-Garay M, Christiani DC, Yates CR, Wurfel MM, Meduri GU, Garcia JGN. Genome-Wide Association Study in African Americans with Acute Respiratory Distress Syndrome Identifies the Selectin P Ligand Gene as a Risk Factor. Am J Respir Crit Care Med 2018; 197:1421-1432. [PMID: 29425463 PMCID: PMC6005557 DOI: 10.1164/rccm.201705-0961oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 02/08/2018] [Indexed: 12/29/2022] Open
Abstract
RATIONALE Genetic factors are involved in acute respiratory distress syndrome (ARDS) susceptibility. Identification of novel candidate genes associated with increased risk and severity will improve our understanding of ARDS pathophysiology and enhance efforts to develop novel preventive and therapeutic approaches. OBJECTIVES To identify genetic susceptibility targets for ARDS. METHODS A genome-wide association study was performed on 232 African American patients with ARDS and 162 at-risk control subjects. The Identify Candidate Causal SNPs and Pathways platform was used to infer the association of known gene sets with the top prioritized intragenic SNPs. Preclinical validation of SELPLG (selectin P ligand gene) was performed using mouse models of LPS- and ventilator-induced lung injury. Exonic variation within SELPLG distinguishing patients with ARDS from sepsis control subjects was confirmed in an independent cohort. MEASUREMENTS AND MAIN RESULTS Pathway prioritization analysis identified a nonsynonymous coding SNP (rs2228315) within SELPLG, encoding P-selectin glycoprotein ligand 1, to be associated with increased susceptibility. In an independent cohort, two exonic SELPLG SNPs were significantly associated with ARDS susceptibility. Additional support for SELPLG as an ARDS candidate gene was derived from preclinical ARDS models where SELPLG gene expression in lung tissues was significantly increased in both ventilator-induced (twofold increase) and LPS-induced (5.7-fold increase) murine lung injury models compared with controls. Furthermore, Selplg-/- mice exhibited significantly reduced LPS-induced inflammatory lung injury compared with wild-type C57/B6 mice. Finally, an antibody that neutralizes P-selectin glycoprotein ligand 1 significantly attenuated LPS-induced lung inflammation. CONCLUSIONS These findings identify SELPLG as a novel ARDS susceptibility gene among individuals of European and African descent.
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Affiliation(s)
| | - Nima Pouladi
- Department of Medicine
- Center for Biomedical Informatics and Biostatistics
| | | | | | | | | | | | | | | | | | | | - Yves A. Lussier
- Department of Medicine
- Center for Biomedical Informatics and Biostatistics
| | - Tiffanie K. Jones
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - John P. Reilly
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Nuala J. Meyer
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Jason D. Christie
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Jason H. Karnes
- Department of Pharmacy Practice and Science, University of Arizona, Tucson, Arizona
| | | | - David C. Christiani
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Pulmonary and Critical Care Division, Department of Medicine, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
| | | | - Mark M. Wurfel
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, Washington
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16
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Yago T, Zhang N, Zhao L, Abrams CS, McEver RP. Selectins and chemokines use shared and distinct signals to activate β2 integrins in neutrophils. Blood Adv 2018; 2:731-744. [PMID: 29592875 PMCID: PMC5894262 DOI: 10.1182/bloodadvances.2017015602] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/06/2018] [Indexed: 01/13/2023] Open
Abstract
Rolling neutrophils receive signals while engaging P- and E-selectin and chemokines on inflamed endothelium. Selectin signaling activates β2 integrins to slow rolling velocities. Chemokine signaling activates β2 integrins to cause arrest. Despite extensive study, key aspects of these signaling cascades remain unresolved. Using complementary in vitro and in vivo assays, we found that selectin and chemokine signals in neutrophils triggered Rap1a-dependent and phosphatidylinositol-4-phosphate 5-kinase γ (PIP5Kγ90)-dependent pathways that induce integrin-dependent slow rolling and arrest. Interruption of both pathways, but not either pathway alone, blocked talin-1 recruitment to and activation of integrins. An isoform of PIP5Kγ90 lacking the talin-binding domain (PIP5Kγ87) could not activate integrins. Chemokines, but not selectins, used phosphatidylinositol-4,5-bisphosphate 3-kinase γ (PI3Kγ) in cooperation with Rap1a to mediate integrin-dependent slow rolling (at low chemokine concentrations), as well as arrest (at high chemokine concentrations). High levels of chemokines activated β2 integrins without selectin signals. When chemokines were limiting, they synergized with selectins to activate β2 integrins.
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Affiliation(s)
- Tadayuki Yago
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Nan Zhang
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK; and
| | - Liang Zhao
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Charles S Abrams
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Rodger P McEver
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK; and
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17
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Miyauchi M, Koya J, Arai S, Yamazaki S, Honda A, Kataoka K, Yoshimi A, Taoka K, Kumano K, Kurokawa M. ADAM8 Is an Antigen of Tyrosine Kinase Inhibitor-Resistant Chronic Myeloid Leukemia Cells Identified by Patient-Derived Induced Pluripotent Stem Cells. Stem Cell Reports 2018; 10:1115-1130. [PMID: 29429960 PMCID: PMC5919294 DOI: 10.1016/j.stemcr.2018.01.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 01/12/2018] [Accepted: 01/15/2018] [Indexed: 11/22/2022] Open
Abstract
Properties of cancer stem cells involved in drug resistance and relapse have significant effects on clinical outcome. Although tyrosine kinase inhibitors (TKIs) have dramatically improved survival of patients with chronic myeloid leukemia (CML), TKIs have not fully cured CML due to TKI-resistant CML stem cells. Moreover, relapse after discontinuation of TKIs has not been predicted in CML patients with the best TKI response. In our study, a model of CML stem cells derived from CML induced pluripotent stem cells identified ADAM8 as an antigen of TKI-resistant CML cells. The inhibition of expression or metalloproteinase activity of ADAM8 restored TKI sensitivity in primary samples. In addition, residual CML cells in patients with optimal TKI response were concentrated in the ADAM8+ population. Our study demonstrates that ADAM8 is a marker of residual CML cells even in patients with optimal TKI response and would be a predictor of relapse and a therapeutic target of TKI-resistant CML cells. We established a model of CML stem cells derived from CML-iPSCs ADAM8 is identified as an antigen of TKI-resistant CML cells The inhibition of ADAM8 restored TKI sensitivity in primary samples ADAM8 is a marker of residual CML cells in patients with optimal TKI response
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Affiliation(s)
- Masashi Miyauchi
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Junji Koya
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Shunya Arai
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Sho Yamazaki
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Akira Honda
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Keisuke Kataoka
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Akihide Yoshimi
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Kazuki Taoka
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Keiki Kumano
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan
| | - Mineo Kurokawa
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan.
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18
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Khaustova NA, Maltseva DV, Oliveira-Ferrer L, Stürken C, Milde-Langosch K, Makarova JA, Rodin S, Schumacher U, Tonevitsky AG. Selectin-independent adhesion during ovarian cancer metastasis. Biochimie 2017; 142:197-206. [PMID: 28919578 DOI: 10.1016/j.biochi.2017.09.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 09/12/2017] [Indexed: 12/31/2022]
Abstract
PURPOSE Ovarian cancer (OvCa) progression mainly takes place by intraperitoneal spread. Adhesion of tumor cells to the mesothelial cells which form the inner surface of the peritoneum is a crucial step in this process. Cancer cells use in principle different molecules of the leukocyte adhesion cascade to facilitate adhesion. This cascade is initiated by selectin-ligand interactions followed by integrin - extracellular matrix protein interactions. Here we address the question whether all tumor cells predominantly employ selectin-dependent leukocyte-like adhesion cascade (SDAC) or whether they use integrin mediated adhesion for OvCa progression as well. METHODS A comparative transcriptomic analysis of the human OvCa cell lines OVCAR8 and SKOV3 was performed. Intraperitoneal xenograft model of OVCAR8 cells was used to determine whether there is a correlation between SDAC gene expression and the metastatic potential of the control cells and the cells overexpressing c-Fos. Transcriptomic analysis of OVCAR8 and SKOV3 samples was performed using microarrays. RESULTS One-third of the protein-coding genes involved in SDAC exhibited lower expression levels in OVCAR8 than in SKOV3 cells. In contrast to SKOV3 cells, c-Fos overexpression in OVCAR8 cells did not significantly influence the expression of SDAC genes. Intraperitoneal xenograft model of OVCAR8 cells unexpectedly demonstrated that the aggressiveness of OVCAR8 tumors was not depended on the c-Fos expression level and was comparable to that of SKOV3 control tumors. Gene expression analysis of tumors suggests that SKOV3-derived tumor progression was mainly depended on SDAC. Progression of OVCAR8 tumors relied on other cell adhesion molecules that do not interact with selectins. CONCLUSIONS High expression of c-Fos in ovarian cancer cells is not always associated with reduced metastatic potential. Low expression level of SDAC genes may not ensure low OvCa metastatic potential hence alternative adhesion mechanisms involving laminin-integrin interactions exist as well.
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Affiliation(s)
| | | | - Leticia Oliveira-Ferrer
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany.
| | - Christine Stürken
- Department of Anatomy and Experimental Morphology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany.
| | - Karin Milde-Langosch
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany.
| | - Julia A Makarova
- P. Herzen Moscow Oncology Research Institute, Moscow, 125284, Russia.
| | - Sergey Rodin
- SRC Bioclinicum, Moscow, 115088, Russia; Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177, Stockholm, Sweden.
| | - Udo Schumacher
- Department of Anatomy and Experimental Morphology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany.
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19
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Downregulation of P-selectin glycoprotein ligand-1 as a potential anti-inflammatory mechanism. Future Med Chem 2017; 9:1323-1326. [PMID: 28771035 DOI: 10.4155/fmc-2017-0119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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20
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Circulating soluble P-selectin must dimerize to promote inflammation and coagulation in mice. Blood 2017; 130:181-191. [PMID: 28515093 DOI: 10.1182/blood-2017-02-770479] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/14/2017] [Indexed: 11/20/2022] Open
Abstract
Leukocyte adhesion to P-selectin on activated platelets and endothelial cells induces shedding of the P-selectin ectodomain into the circulation. Plasma soluble P-selectin (sP-selectin) is elevated threefold to fourfold in patients with cardiovascular disease. Circulating sP-selectin is thought to trigger signaling in leukocytes that directly contributes to inflammation and thrombosis. However, sP-selectin likely circulates as a monomer, and in vitro studies suggest that sP-selectin must dimerize to induce signaling in leukocytes. To address this discrepancy, we expressed the entire ectodomain of mouse P-selectin as a monomer (sP-selectin) or as a disulfide-linked dimer fused to the Fc portion of mouse immunoglobulin G (sP-selectin-Fc). Dimeric sP-selectin-Fc, but not monomeric sP-selectin, triggered integrin-dependent adhesion of mouse leukocytes in vitro. Antibody-induced oligomerization of sP-selectin or sP-selectin-Fc was required to trigger formation of neutrophil extracellular traps. Injecting sP-selectin-Fc, but not sP-selectin, into mice augmented integrin-dependent adhesion of neutrophils in venules, generated tissue factor-bearing microparticles, shortened plasma-clotting times, and increased thrombus frequency in the inferior vena cava. Furthermore, transgenic mice that overexpressed monomeric sP-selectin did not exhibit increased inflammation or thrombosis. We conclude that elevated plasma sP-selectin is a consequence rather than a cause of cardiovascular disease.
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21
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Liu Z, Yago T, Zhang N, Panicker SR, Wang Y, Yao L, Mehta-D'souza P, Xia L, Zhu C, McEver RP. L-selectin mechanochemistry restricts neutrophil priming in vivo. Nat Commun 2017; 8:15196. [PMID: 28497779 PMCID: PMC5437312 DOI: 10.1038/ncomms15196] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 03/09/2017] [Indexed: 01/02/2023] Open
Abstract
Circulating neutrophils must avoid premature activation to prevent tissue injury. The leukocyte adhesion receptor L-selectin forms bonds with P-selectin glycoprotein ligand-1 (PSGL-1) on other leukocytes and with peripheral node addressin (PNAd) on high endothelial venules. Mechanical forces can strengthen (catch) or weaken (slip) bonds between biological molecules. How these mechanochemical processes influence function in vivo is unexplored. Here we show that mice expressing an L-selectin mutant (N138G) have altered catch bonds and prolonged bond lifetimes at low forces. Basal lymphocyte homing and neutrophil recruitment to inflamed sites are normal. However, circulating neutrophils form unstable aggregates and are unexpectedly primed to respond robustly to inflammatory mediators. Priming requires signals transduced through L-selectin N138G after it engages PSGL-1 or PNAd. Priming enhances bacterial clearance but increases inflammatory injury and enlarges venous thrombi. Thus, L-selectin mechanochemistry limits premature activation of neutrophils. Our results highlight the importance of probing how mechanochemistry functions in vivo. Neutrophil adhesion is tightly regulated to enforce protective immunity, but it is unclear how mechanochemical processes such as catch bonds and slip bonds modulate neutrophils in vivo. Here the authors show that a point mutation in the adhesion molecule L-selectin alters mechanochemical regulation to affect neutrophil functions in mice.
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Affiliation(s)
- Zhenghui Liu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA
| | - Tadayuki Yago
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA
| | - Nan Zhang
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA
| | - Sumith R Panicker
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA
| | - Ying Wang
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA
| | - Longbiao Yao
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA
| | - Padmaja Mehta-D'souza
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA
| | - Lijun Xia
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA.,Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA
| | - Cheng Zhu
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.,Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.,Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - Rodger P McEver
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA.,Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA
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22
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Patel MS, Miranda-Nieves D, Chen J, Haller CA, Chaikof EL. Targeting P-selectin glycoprotein ligand-1/P-selectin interactions as a novel therapy for metabolic syndrome. Transl Res 2017; 183:1-13. [PMID: 28034759 PMCID: PMC5393932 DOI: 10.1016/j.trsl.2016.11.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 11/13/2016] [Indexed: 12/22/2022]
Abstract
Obesity-induced insulin resistance and metabolic syndrome continue to pose an important public health challenge worldwide as they significantly increase the risk of type 2 diabetes and atherosclerotic cardiovascular disease. Advances in the pathophysiologic understanding of this process has identified that chronic inflammation plays a pivotal role. In this regard, given that both animal models and human studies have demonstrated that the interaction of P-selectin glycoprotein ligand-1 (PSGL-1) with P-selectin is not only critical for normal immune response but also is upregulated in the setting of metabolic syndrome, PSGL-1/P-selectin interactions provide a novel target for preventing and treating resultant disease. Current approaches of interfering with PSGL-1/P-selectin interactions include targeted antibodies, recombinant immunoglobulins that competitively bind P-selectin, and synthetic molecular therapies. Experimental models as well as clinical trials assessing the role of these modalities in a variety of diseases have continued to contribute to the understanding of PSGL-1/P-selectin interactions and have demonstrated the difficulty in creating clinically relevant therapeutics. Most recently, however, computational simulations have further enhanced our understanding of the structural features of PSGL-1 and related glycomimetics, which are responsible for high-affinity selectin interactions. Leveraging these insights for the design of next generation agents has thus led to development of a promising synthetic method for generating PSGL-1 glycosulfopeptide mimetics for the treatment of metabolic syndrome.
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Affiliation(s)
- Madhukar S Patel
- Department of Surgery, Massachusetts General Hospital, Boston, Mass; Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass
| | - David Miranda-Nieves
- Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass; Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Mass
| | - Jiaxuan Chen
- Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass
| | - Carolyn A Haller
- Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass.
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23
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E-selectin ligands recognised by HECA452 induce drug resistance in myeloma, which is overcome by the E-selectin antagonist, GMI-1271. Leukemia 2017; 31:2642-2651. [PMID: 28439107 PMCID: PMC5729350 DOI: 10.1038/leu.2017.123] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/31/2017] [Accepted: 04/04/2017] [Indexed: 01/02/2023]
Abstract
Multiple myeloma (MM) is characterized by the clonal expansion and metastatic spread of malignant plasma cells to multiple sites in the bone marrow (BM). Recently, we implicated the sialyltransferase ST3Gal-6, an enzyme critical to the generation of E-selectin ligands, in MM BM homing and resistance to therapy. Since E-selectin is constitutively expressed in the BM microvasculature, we wished to establish the contribution of E-selectin ligands to MM biology. We report that functional E-selectin ligands are restricted to a minor subpopulation of MM cell lines which, upon expansion, demonstrate specific and robust interaction with recombinant E-selectin in vitro. Moreover, an increase in the mRNA levels of genes involved in the generation of E-selectin ligands was associated with inferior progression-free survival in the CoMMpass study. In vivo, E-selectin ligand-enriched cells induced a more aggressive disease and were completely insensitive to Bortezomib. Importantly, this resistance could be reverted by co-administration of GMI-1271, a specific glycomimetic antagonist of E-selectin. Finally, we report that E-selectin ligand-bearing cells are present in primary MM samples from BM and peripheral blood with a higher proportion seen in relapsed patients. This study provides a rationale for targeting E-selectin receptor/ligand interactions to overcome MM metastasis and chemoresistance.
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24
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P-Selectin preserves immune tolerance in mice and is reduced in human cutaneous lupus. Sci Rep 2017; 7:41841. [PMID: 28150814 PMCID: PMC5288776 DOI: 10.1038/srep41841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 12/30/2016] [Indexed: 12/19/2022] Open
Abstract
Mice deficient in P-Selectin presented altered immunity/tolerance balance. We have observed that the absence of P-Selectin promotes splenomegaly with reduced naïve T cell population, elevated activated/effector T cell subset, increased germinal center B and Tfh populations and high production of autoreactive antibodies. Moreover, 1.5-3-month-old P-selectin KO mice showed reduced IL-10-producing leukocytes in blood and a slightly reduced Treg population in the skin. With aging and, coinciding with disease severity, there is an increase in the IL17+ circulating and dermal T cell subpopulations and reduction of dermal Treg. As a consequence, P-Selectin deficient mice developed a progressive autoimmune syndrome showing skin alterations characteristic of lupus prone mice and elevated circulating autoantibodies, including anti-dsDNA. Similar to human SLE, disease pathogenesis was characterized by deposition of immune complexes in the dermoepidermal junction and renal glomeruli, and a complex pattern of autoantibodies. More important, skin biopsies of cutaneous lupus erythematosus patients did not show increased expression of P-Selectin, as described for other inflammatory diseases, and the number of vessels expressing P-Selectin was reduced.
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25
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Pepin M, Mezouar S, Pegon J, Muczynski V, Adam F, Bianchini EP, Bazaa A, Proulle V, Rupin A, Paysant J, Panicot-Dubois L, Christophe OD, Dubois C, Lenting PJ, Denis CV. Soluble Siglec-5 associates to PSGL-1 and displays anti-inflammatory activity. Sci Rep 2016; 6:37953. [PMID: 27892504 PMCID: PMC5125011 DOI: 10.1038/srep37953] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/01/2016] [Indexed: 01/21/2023] Open
Abstract
Interactions between endothelial selectins and the leukocyte counter-receptor PSGL1 mediates leukocyte recruitment to inflammation sites. PSGL1 is highly sialylated, making it a potential ligand for Siglec-5, a leukocyte-receptor that recognizes sialic acid structures. Binding assays using soluble Siglec-5 variants (sSiglec-5/C4BP and sSiglec-5/Fc) revealed a dose- and calcium-dependent binding to PSGL1. Pre-treatment of PSGL1 with sialidase reduced Siglec-5 binding by 79 ± 4%. In confocal immune-fluorescence assays, we observed that 50% of Peripheral Blood Mononuclear Cells (PBMCs) simultaneously express PSGL1 and Siglec-5. Duolink-proximity ligation analysis demonstrated that PSGL1 and Siglec-5 are in close proximity (<40 nm) in 31 ± 4% of PBMCs. In vitro perfusion assays revealed that leukocyte-rolling over E- and P-selectin was inhibited by sSiglec-5/Fc or sSiglec-5/C4BP, while adhesion onto VCAM1 was unaffected. When applied to healthy mice (0.8 mg/kg), sSiglec-5/C4BP significantly reduced the number of rolling leukocytes under basal conditions (10.9 ± 3.7 versus 23.5 ± 9.3 leukocytes/field/min for sSiglec-5/C4BP-treated and control mice, respectively; p = 0.0093). Moreover, leukocyte recruitment was inhibited over a 5-h observation period in an in vivo model of TNFalpha-induced inflammation following injection sSiglec-5/C4BP (0.8 mg/kg). Our data identify PSGL1 as a ligand for Siglec-5, and soluble Siglec-5 variants appear efficient in blocking PSGL1-mediated leukocyte rolling and the inflammatory response in general.
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Affiliation(s)
- Marion Pepin
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Soraya Mezouar
- Aix Marseille Université, Inserm UMR_S 1076, (VRCM) Vascular Research Center of Marseille, 13385 Marseille, France
| | - Julie Pegon
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Vincent Muczynski
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Frédéric Adam
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Elsa P Bianchini
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Amine Bazaa
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Valerie Proulle
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France.,Department of Biological Hematology, CHU Bicetre, Hopitaux Universitaires Paris Sud, AP-HP, Paris, France
| | - Alain Rupin
- Institut de Recherche International Servier, Recherche Translationelle et Clinique Oncologie, 92150, Suresnes, France
| | - Jerome Paysant
- Institut de Recherches Servier, Unité de Recherche et de Découverte Cardiovasculaire, 92150, Suresnes, France
| | - Laurence Panicot-Dubois
- Aix Marseille Université, Inserm UMR_S 1076, (VRCM) Vascular Research Center of Marseille, 13385 Marseille, France
| | - Olivier D Christophe
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Christophe Dubois
- Aix Marseille Université, Inserm UMR_S 1076, (VRCM) Vascular Research Center of Marseille, 13385 Marseille, France
| | - Peter J Lenting
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Cécile V Denis
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
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26
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Fan Z, Ley K. Leukocyte arrest: Biomechanics and molecular mechanisms of β2 integrin activation. Biorheology 2016; 52:353-77. [PMID: 26684674 DOI: 10.3233/bir-15085] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Integrins are a group of heterodimeric transmembrane receptors that play essential roles in cell-cell and cell-matrix interaction. Integrins are important in many physiological processes and diseases. Integrins acquire affinity to their ligand by undergoing molecular conformational changes called activation. Here we review the molecular biomechanics during conformational changes of integrins, integrin functions in leukocyte biorheology (adhesive functions during rolling and arrest) and molecules involved in integrin activation.
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Affiliation(s)
- Zhichao Fan
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Klaus Ley
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.,Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
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27
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Gao L, Gülcüler GS, Golbach L, Block H, Zarbock A, Martin-Villalba A. Endothelial cell-derived CD95 ligand serves as a chemokine in induction of neutrophil slow rolling and adhesion. eLife 2016; 5. [PMID: 27763263 PMCID: PMC5098908 DOI: 10.7554/elife.18542] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 10/19/2016] [Indexed: 12/31/2022] Open
Abstract
Integrin activation is crucial for the regulation of leukocyte rolling, adhesion and trans-vessel migration during inflammation and occurs by engagement of myeloid cells through factors presented by inflamed vessels. However, endothelial-dependent mechanisms of myeloid cell recruitment are not fully understood. Here we show using an autoperfused flow chamber assay of whole blood neutrophils and intravital microscopy of the inflamed cremaster muscle that CD95 mediates leukocyte slow rolling, adhesion and transmigration upon binding of CD95-ligand (CD95L) that is presented by endothelial cells. In myeloid cells, CD95 triggers activation of Syk-Btk/PLCγ2/Rap1 signaling that ultimately leads to integrin activation. Excitingly, CD95-deficient myeloid cells exhibit impaired bacterial clearance in an animal model of sepsis induced by cecal ligation and puncture (CLP). Our data identify the cellular and molecular mechanisms underlying the chemoattractant effect of endothelial cell-derived CD95L in induction of neutrophil recruitment and support the use of therapeutic inhibition of CD95’s activity in inflammatory diseases. DOI:http://dx.doi.org/10.7554/eLife.18542.001 When tissues are damaged or infected, the body produces an inflammatory response. Neutrophils – a type of white blood cell – play an important part in this response. These cells normally circulate through the bloodstream, and are recruited to the inflamed site by chemical signals sent out by immune cells in the damaged tissue. This causes passing neutrophils to migrate through the wall of the blood vessel to gain access to the inflamed tissue. The neutrophils go through a sequence of steps before they can pass through the blood vessel wall. After initially tethering to the cells that line the blood vessel, the neutrophils experience a period of “slow rolling” across the vessel lining, before tightly adhering to one of the cells. In 2010, researchers determined that a protein on the neutrophil’s surface, known as CD95, helps the cell migrate through blood vessel walls. This protein interacts with a “ligand” molecule on the surface of the cells that line the blood vessel. However, it remains unclear whether CD95 and its ligand play a role in the steps that lead up to the neutrophils migrating through the blood vessel wall. Gao et al. – who include researchers involved in the 2010 study – now show that activating CD95 in neutrophils also triggers the cell’s slow rolling and adhesion. Experiments performed on mouse cells and tissues showed that the cells that line the blood vessels present the CD95 ligand on their surfaces in order to activate CD95 in the neutrophils circulating in the bloodstream. This ultimately leads to neutrophil slow rolling and adhesion. Further experiments in mice showed that this ability of CD95 to recruit neutrophils to inflamed sites was crucial for clearing bacteria in cases of sepsis, where infection causes the immune system to damage the body’s own tissues. Future studies could address whether inhibiting CD95's activity could help to treat diseases that feature uncontrolled white blood cell recruitment, including various cancers and autoimmune diseases. DOI:http://dx.doi.org/10.7554/eLife.18542.002
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Affiliation(s)
- Liang Gao
- Division of Molecular Neurobiology, German Cancer Research Center, Heidelberg, Germany
| | - Gülce Sila Gülcüler
- Division of Molecular Neurobiology, German Cancer Research Center, Heidelberg, Germany
| | - Lieke Golbach
- Department of Anesthesiology and Critical Care Medicine, University of Münster, Münster, Germany
| | - Helena Block
- Department of Anesthesiology and Critical Care Medicine, University of Münster, Münster, Germany
| | - Alexander Zarbock
- Department of Anesthesiology and Critical Care Medicine, University of Münster, Münster, Germany
| | - Ana Martin-Villalba
- Division of Molecular Neurobiology, German Cancer Research Center, Heidelberg, Germany
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28
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Hou HW, Petchakup C, Tay HM, Tam ZY, Dalan R, Chew DEK, Li KHH, Boehm BO. Rapid and label-free microfluidic neutrophil purification and phenotyping in diabetes mellitus. Sci Rep 2016; 6:29410. [PMID: 27381673 PMCID: PMC4933935 DOI: 10.1038/srep29410] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 06/16/2016] [Indexed: 01/13/2023] Open
Abstract
Advanced management of dysmetabolic syndromes such as diabetes will benefit from a timely mechanistic insight enabling personalized medicine approaches. Herein, we present a rapid microfluidic neutrophil sorting and functional phenotyping strategy for type 2 diabetes mellitus (T2DM) patients using small blood volumes (fingerprick ~100 μL). The developed inertial microfluidics technology enables single-step neutrophil isolation (>90% purity) without immuno-labeling and sorted neutrophils are used to characterize their rolling behavior on E-selectin, a critical step in leukocyte recruitment during inflammation. The integrated microfluidics testing methodology facilitates high throughput single-cell quantification of neutrophil rolling to detect subtle differences in speed distribution. Higher rolling speed was observed in T2DM patients (P < 0.01) which strongly correlated with neutrophil activation, rolling ligand P-selectin glycoprotein ligand 1 (PSGL-1) expression, as well as established cardiovascular risk factors (cholesterol, high-sensitive C-reactive protein (CRP) and HbA1c). Rolling phenotype can be modulated by common disease risk modifiers (metformin and pravastatin). Receiver operating characteristics (ROC) and principal component analysis (PCA) revealed neutrophil rolling as an important functional phenotype in T2DM diagnostics. These results suggest a new point-of-care testing methodology, and neutrophil rolling speed as a functional biomarker for rapid profiling of dysmetabolic subjects in clinical and patient-oriented settings.
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Affiliation(s)
- Han Wei Hou
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Chayakorn Petchakup
- Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Hui Min Tay
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Zhi Yang Tam
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Rinkoo Dalan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.,Endocrine and Diabetes, Tan Tock Seng Hospital, Singapore
| | - Daniel Ek Kwang Chew
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.,Endocrine and Diabetes, Tan Tock Seng Hospital, Singapore
| | - King Ho Holden Li
- Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Bernhard O Boehm
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.,Endocrine and Diabetes, Tan Tock Seng Hospital, Singapore.,Imperial College London, UK
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29
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Chen QF, Li YZ, Wang XH, Su YR, Cui S, Miao MX, Jiang ZZ, Jiang ML, Jiang AD, Chen X, Xu YG, Gong GQ. Evaluating antithrombotic activity of HY023016 on rat hypercoagulable model. Eur J Pharmacol 2016; 781:190-7. [PMID: 27085896 DOI: 10.1016/j.ejphar.2016.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
Abstract
The generation of thrombus is not considered as an isolated progression without other pathologic processes, which may also enhance procoagulant state. The purpose of this study was to assess whether HY023016, a novel dabigatran prodrug and an oral direct thrombin inhibitor, or dabigatran etexilate, another thrombin inhibitor can improve the state of whole blood hypercoagulability in vitro/vivo. By using whole blood flow cytometry we explored the effects of HY023016 and dabigatran etexilate on thrombin and ADP-induced human platelet-leukocyte aggregation generated in vitro. With the method of continuous infusion of thrombin intravenous, we successfully established a rat hypercoagulable model and evaluated the effect of HY023016 or dabigatran etexilate in vivo. HY023016 was able to inhibit thrombin- or ADP-induced platelet P-selectin or CD40L expression, leukocyte CD11b expression and formation of platelet-leukocyte aggregates in dose-dependent manner. Dabigatran etexilate was unable to affect ADP-induced platelet P-selectin or CD40L expression, leukocyte CD11b expression and formation of platelet-leukocyte aggregates. Based on rat hypercoagulable model, dabigatran etexilate could reverse thrombin-induced circulatory system hypercoagulable state in a concentration-dependent manner. Dabigatran etexilate also inhibited electrical stimulation induced formation of arterial thrombus in rat under hypercoagulable state, and extracorporal circulation-induced formation of thrombus in dose-dependent manner. Compared with dabigatran etexilate, HY023016 showed nearly equal or even better antithrombotic activity, regardless of reversing the cycle of rat hypercoagulable state or inhibiting platelet-leukocyte aggregation. In surrmary, HY023016 could effectively improve hypercoagulable state of circulatory system.
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Affiliation(s)
- Qiu-Fang Chen
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yun-Zhan Li
- State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University, Xiamen, Fujian, China
| | - Xin-Hui Wang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - You-Rui Su
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Shuang Cui
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Ming-Xing Miao
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Zhen-Zhou Jiang
- National Drug Screening Center, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Mei-Ling Jiang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Ai-Dou Jiang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Xiang Chen
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yun-Gen Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, Jiangsu, China.
| | - Guo-Qing Gong
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China.
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30
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Hughes AD, Marsh G, Waugh RE, Foster DG, King MR. Halloysite Nanotube Coatings Suppress Leukocyte Spreading. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:13553-13560. [PMID: 26605493 PMCID: PMC5097672 DOI: 10.1021/acs.langmuir.5b03288] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The nanoscale topography of adhesive surfaces is known to be an important factor governing cellular behavior. Previous work has shown that surface coatings composed of halloysite nanotubes enhance the adhesion, and therefore capture of, rare target cells such as circulating tumor cells. Here we demonstrate a unique feature of these coatings in their ability to reduce the adhesion of leukocytes and prevent leukocyte spreading. Surfaces were prepared with coatings of halloysite nanotubes and functionalized for leukocyte adhesion with E-selectin, and the dilution of nanotube concentration revealed a threshold concentration below which cell spreading became comparable to smooth surfaces. Evaluation of surface roughness characteristics determined that the average distance between discrete surface features correlated with adhesion metrics, with a separation distance of ∼2 μm identified as the critical threshold. Computational modeling of the interaction of leukocytes with halloysite nanotube-coated surfaces of varying concentrations demonstrates that the geometry of the cell surface and adhesive counter-surface produces a significantly diminished effective contact area compared to a leukocyte interacting with a smooth surface.
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Affiliation(s)
- Andrew D. Hughes
- Department of Biomedical Engineering, Cornell University, Ithaca, NY, 14853
| | - Graham Marsh
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627
| | - Richard E. Waugh
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627
| | - David G. Foster
- Department of Chemical Engineering, University of Rochester, Rochester, NY, 14627
| | - Michael R. King
- Department of Biomedical Engineering, Cornell University, Ithaca, NY, 14853
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Liu Z, Zhang N, Shao B, Panicker SR, Fu J, McEver RP. Replacing the Promoter of the Murine Gene Encoding P-selectin with the Human Promoter Confers Human-like Basal and Inducible Expression in Mice. J Biol Chem 2015; 291:1441-7. [PMID: 26631722 DOI: 10.1074/jbc.m115.702126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Indexed: 01/30/2023] Open
Abstract
In humans and mice, megakaryocytes/platelets and endothelial cells constitutively synthesize P-selectin and mobilize it to the plasma membrane to mediate leukocyte rolling during inflammation. TNF-α, interleukin 1β, and LPS markedly increase P-selectin mRNA in mice but decrease P-selectin mRNA in humans. Transgenic mice bearing the entire human SELP gene recapitulate basal and inducible expression of human P-selectin and reveal human-specific differences in P-selectin function. Differences in the human SELP and murine Selp promoters account for divergent expression in vitro, but their significance in vivo is not known. Here we generated knockin mice that replace the 1.4-kb proximal Selp promoter with the corresponding SELP sequence (Selp(KI)). Selp(KI) (/) (KI) mice constitutively expressed more P-selectin on platelets and more P-selectin mRNA in tissues but only slightly increased P-selectin mRNA after injection of TNF-α or LPS. Consistent with higher basal expression, leukocytes rolled more slowly on P-selectin in trauma-stimulated venules of Selp(KI) (/) (KI) mice. However, TNF-α did not further reduce P-selectin-dependent rolling velocities. Blunted up-regulation of P-selectin mRNA during contact hypersensitivity reduced P-selectin-dependent inflammation in Selp(KI) (/-) mice. Higher basal P-selectin in Selp(KI) (/) (KI) mice compensated for this defect. Therefore, divergent sequences in a short promoter mediate most of the functionally significant differences in expression of human and murine P-selectin in vivo.
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Affiliation(s)
- Zhenghui Liu
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104 and
| | - Nan Zhang
- the Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Bojing Shao
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104 and
| | - Sumith R Panicker
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104 and
| | - Jianxin Fu
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104 and
| | - Rodger P McEver
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104 and the Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
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32
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Selectin-mediated leukocyte trafficking during the development of autoimmune disease. Autoimmun Rev 2015; 14:984-95. [DOI: 10.1016/j.autrev.2015.06.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 06/18/2015] [Indexed: 12/18/2022]
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Hu K, Harris DL, Yamaguchi T, von Andrian UH, Hamrah P. A Dual Role for Corneal Dendritic Cells in Herpes Simplex Keratitis: Local Suppression of Corneal Damage and Promotion of Systemic Viral Dissemination. PLoS One 2015; 10:e0137123. [PMID: 26332302 PMCID: PMC4557979 DOI: 10.1371/journal.pone.0137123] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/12/2015] [Indexed: 12/20/2022] Open
Abstract
The cornea is the shield to the foreign world and thus, a primary site for peripheral infections. However, transparency and vision are incompatible with inflammation and scarring that may result from infections. Thus, the cornea is required to perform a delicate balance between fighting infections and preserving vision. To date, little is known about the specific role of antigen-presenting cells in viral keratitis. In this study, utilizing an established murine model of primary acute herpes simplex virus (HSV)-1 keratitis, we demonstrate that primary HSV keratitis results in increased conventional dendritic cells (cDCs) and macrophages within 24 hours after infection. Local depletion of cDCs in CD11c-DTR mice by subconjuntival diphtheria toxin injections, led to increased viral proliferation, and influx of inflammatory cells, resulting in increased scarring and clinical keratitis. In addition, while HSV infection resulted in significant corneal nerve destruction, local depletion of cDCs resulted in a much more severe loss of corneal nerves. Further, local cDC depletion resulted in decreased corneal nerve infection, and subsequently decreased and delayed systemic viral transmission in the trigeminal ganglion and draining lymph node, resulting in decreased mortality of mice. In contrast, sham depletion or depletion of macrophages through local injection of clodronate liposomes had neither a significant impact on the cornea, nor an effect on systemic viral transmission. In conclusion, we demonstrate that corneal cDCs may play a primary role in local corneal defense during viral keratitis and preserve vision, at the cost of inducing systemic viral dissemination, leading to increased mortality.
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Affiliation(s)
- Kai Hu
- Schepens Eye Research Institute, Massachusetts Eye & Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Cornea Service, Massachusetts Eye & Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Immune Disease Institute, Program in Cellular and Molecular Medicine at Children’s Hospital Boston, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Deshea L. Harris
- Schepens Eye Research Institute, Massachusetts Eye & Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Immune Disease Institute, Program in Cellular and Molecular Medicine at Children’s Hospital Boston, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Ophthalmology, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Takefumi Yamaguchi
- Schepens Eye Research Institute, Massachusetts Eye & Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Cornea Service, Massachusetts Eye & Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Immune Disease Institute, Program in Cellular and Molecular Medicine at Children’s Hospital Boston, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ulrich H. von Andrian
- Immune Disease Institute, Program in Cellular and Molecular Medicine at Children’s Hospital Boston, Harvard Medical School, Boston, Massachusetts, United States of America
- Division of Immunology, Department of Microbiology & Immunobiology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Pedram Hamrah
- Schepens Eye Research Institute, Massachusetts Eye & Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Cornea Service, Massachusetts Eye & Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- Immune Disease Institute, Program in Cellular and Molecular Medicine at Children’s Hospital Boston, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Ophthalmology, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail:
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Yago T, Petrich BG, Zhang N, Liu Z, Shao B, Ginsberg MH, McEver RP. Blocking neutrophil integrin activation prevents ischemia-reperfusion injury. J Exp Med 2015; 212:1267-81. [PMID: 26169939 PMCID: PMC4516797 DOI: 10.1084/jem.20142358] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 06/09/2015] [Indexed: 01/13/2023] Open
Abstract
Neutrophil recruitment, mediated by β2 integrins, combats pyogenic infections but also plays a key role in ischemia-reperfusion injury and other inflammatory disorders. Talin induces allosteric rearrangements in integrins that increase affinity for ligands (activation). Talin also links integrins to actin and other proteins that enable formation of adhesions. Structural studies have identified a talin1 mutant (L325R) that perturbs activation without impairing talin's capacity to link integrins to actin and other proteins. Here, we found that mice engineered to express only talin1(L325R) in myeloid cells were protected from renal ischemia-reperfusion injury. Dissection of neutrophil function in vitro and in vivo revealed that talin1(L325R) neutrophils had markedly impaired chemokine-induced, β2 integrin-mediated arrest, spreading, and migration. Surprisingly, talin1(L325R) neutrophils exhibited normal selectin-induced, β2 integrin-mediated slow rolling, in sharp contrast to the defective slow rolling of neutrophils lacking talin1 or expressing a talin1 mutant (W359A) that blocks talin interaction with integrins. These studies reveal the importance of talin-mediated activation of integrins for renal ischemia-reperfusion injury. They further show that neutrophil arrest requires talin recruitment to and activation of integrins. However, although neutrophil slow rolling requires talin recruitment to integrins, talin-mediated integrin activation is dispensable.
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Affiliation(s)
- Tadayuki Yago
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104
| | - Brian G Petrich
- Department of Pediatrics and Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA 30322 Department of Pediatrics and Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA 30322
| | - Nan Zhang
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104
| | - Zhenghui Liu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104
| | - Bojing Shao
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104
| | - Mark H Ginsberg
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093
| | - Rodger P McEver
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104 Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104
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Pruenster M, Kurz ARM, Chung KJ, Cao-Ehlker X, Bieber S, Nussbaum CF, Bierschenk S, Eggersmann TK, Rohwedder I, Heinig K, Immler R, Moser M, Koedel U, Gran S, McEver RP, Vestweber D, Verschoor A, Leanderson T, Chavakis T, Roth J, Vogl T, Sperandio M. Extracellular MRP8/14 is a regulator of β2 integrin-dependent neutrophil slow rolling and adhesion. Nat Commun 2015; 6:6915. [PMID: 25892652 PMCID: PMC4411303 DOI: 10.1038/ncomms7915] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 03/13/2015] [Indexed: 12/16/2022] Open
Abstract
Myeloid-related proteins (MRPs) 8 and 14 are cytosolic proteins secreted from myeloid cells as proinflammatory mediators. Currently, the functional role of circulating extracellular MRP8/14 is unclear. Our present study identifies extracellular MRP8/14 as an autocrine player in the leukocyte adhesion cascade. We show that E-selectin–PSGL-1 interaction during neutrophil rolling triggers Mrp8/14 secretion. Released MRP8/14 in turn activates a TLR4-mediated, Rap1-GTPase-dependent pathway of rapid β2 integrin activation in neutrophils. This extracellular activation loop reduces leukocyte rolling velocity and stimulates adhesion. Thus, we identify Mrp8/14 and TLR4 as important modulators of the leukocyte recruitment cascade during inflammation in vivo. MRP8/14 are actively secreted by myeloid cells during inflammation. Here the authors show that MRP8/14 play an important role in leukocyte recruitment to the inflammatory site, triggering an autocrine cascade that promotes neutrophil adhesion to the endothelium.
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Affiliation(s)
- Monika Pruenster
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Angela R M Kurz
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Kyoung-Jin Chung
- Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Xiao Cao-Ehlker
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Stephanie Bieber
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Claudia F Nussbaum
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Susanne Bierschenk
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Tanja K Eggersmann
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Ina Rohwedder
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Kristina Heinig
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Roland Immler
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
| | - Markus Moser
- Department of Molecular Medicine, Max Planck Institute for Biochemistry, Martinsried, Germany
| | - Uwe Koedel
- Department of Neuroinflammation, Ludwig-Maximilians Universität, Munich, Germany
| | - Sandra Gran
- Institute of Immunology, University of Muenster, Muenster, Germany
| | - Rodger P McEver
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | | | - Admar Verschoor
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität, Munich, Germany
| | | | - Triantafyllos Chavakis
- Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Johannes Roth
- Institute of Immunology, University of Muenster, Muenster, Germany
| | - Thomas Vogl
- Institute of Immunology, University of Muenster, Muenster, Germany
| | - Markus Sperandio
- Institute of Cardiovascular Physiology and Pathophysiology, Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians Universität, Munich, Germany
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36
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Regulation of T cell trafficking by the T cell immunoglobulin and mucin domain 1 glycoprotein. Trends Mol Med 2014; 20:675-84. [DOI: 10.1016/j.molmed.2014.10.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 09/30/2014] [Accepted: 10/13/2014] [Indexed: 12/30/2022]
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37
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Wang Y, Yago T, Zhang N, Abdisalaam S, Alexandrakis G, Rodgers W, McEver RP. Cytoskeletal regulation of CD44 membrane organization and interactions with E-selectin. J Biol Chem 2014; 289:35159-71. [PMID: 25359776 DOI: 10.1074/jbc.m114.600767] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Interactions of CD44 on neutrophils with E-selectin on activated endothelial cells mediate rolling under flow, a prerequisite for neutrophil arrest and migration into perivascular tissues. How CD44 functions as a rolling ligand despite its weak affinity for E-selectin is unknown. We examined the nanometer scale organization of CD44 on intact cells. CD44 on leukocytes and transfected K562 cells was cross-linked within a 1.14-nm spacer. Depolymerizing actin with latrunculin B reduced cross-linking. Fluorescence resonance energy transfer (FRET) revealed tight co-clustering between CD44 fused to yellow fluorescent protein (YFP) and CD44 fused to cyan fluorescent protein on K562 cells. Latrunculin B reduced FRET-reported co-clustering. Number and brightness analysis confirmed actin-dependent CD44-YFP clusters on living cells. CD44 lacking binding sites for ankyrin and for ezrin/radixin/moesin (ERM) proteins on its cytoplasmic domain (ΔANKΔERM) did not cluster. Unexpectedly, CD44 lacking only the ankyrin-binding site (ΔANK) formed larger but looser clusters. Fluorescence recovery after photobleaching demonstrated increased CD44 mobility by latrunculin B treatment or by deleting the cytoplasmic domain. ΔANKΔERM mobility increased only modestly, suggesting that the cytoplasmic domain engages the cytoskeleton by an additional mechanism. Ex vivo differentiated CD44-deficient neutrophils expressing exogenous CD44 rolled on E-selectin and activated Src kinases after binding anti-CD44 antibody. In contrast, differentiated neutrophils expressing ΔANK had impaired rolling and kinase activation. These data demonstrate that spectrin and actin networks regulate CD44 clustering and suggest that ankyrin enhances CD44-mediated neutrophil rolling and signaling.
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Affiliation(s)
- Ying Wang
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104 and
| | - Tadayuki Yago
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation and
| | - Nan Zhang
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104 and
| | - Salim Abdisalaam
- Department of Biomedical Engineering, University of Texas, Arlington, Texas 76010
| | - George Alexandrakis
- Department of Biomedical Engineering, University of Texas, Arlington, Texas 76010
| | - William Rodgers
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104 and
| | - Rodger P McEver
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104 and From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation and
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38
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A girl with West syndrome and autistic features harboring a de novo TBL1XR1 mutation. J Hum Genet 2014; 59:581-3. [DOI: 10.1038/jhg.2014.71] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 07/07/2014] [Accepted: 07/17/2014] [Indexed: 11/08/2022]
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Abstract
Glycosylation is a stepwise procedure of covalent attachment of oligosaccharide chains to proteins or lipids, and alterations in this process, especially increased sialylation, have been associated with malignant transformation and metastasis. The role of altered sialylation in multiple myeloma (MM) cell trafficking has not been previously investigated. In the present study we identified high expression of β-galactoside α-2,3-sialyltransferase, ST3GAL6, in MM cell lines and patients. This gene plays a key role in selectin ligand synthesis in humans through the generation of functional sialyl Lewis X. In MRC IX patients, high expression of this gene is associated with inferior overall survival. In this study we demonstrate that knockdown of ST3GAL6 results in a significant reduction in levels of α-2,3-linked sialic acid on the surface of MM cells with an associated significant reduction in adhesion to MM bone marrow stromal cells and fibronectin along with reduced transendothelial migration in vitro. In support of our in vitro findings, we demonstrate significantly reduced homing and engraftment of ST3GAL6 knockdown MM cells to the bone marrow niche in vivo, along with decreased tumor burden and prolonged survival. This study points to the importance of altered glycosylation, particularly sialylation, in MM cell adhesion and migration.
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40
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Goncharova V, Das S, Niles W, Schraufstatter I, Wong AK, Povaly T, Wakeman D, Miller L, Snyder EY, Khaldoyanidi SK. Homing of neural stem cells from the venous compartment into a brain infarct does not involve conventional interactions with vascular endothelium. Stem Cells Transl Med 2014; 3:229-40. [PMID: 24396034 DOI: 10.5966/sctm.2013-0052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Human neural stem cells (hNSCs) hold great potential for treatment of a wide variety of neurodegenerative and neurotraumatic conditions. Heretofore, administration has been through intracranial injection or implantation of cells. Because neural stem cells are capable of migrating to the injured brain from the intravascular space, it seemed feasible to administer them intravenously if their ability to circumvent the blood-brain barrier was enhanced. In the present studies, we found that interactions of hNSCs in vitro on the luminal surface of human umbilical vein endothelial cells was enhanced following enforced expression of cutaneous lymphocyte antigen on cell surface moieties by incubation of hNSCs with fucosyltransferase VI and GDP-fucose (fhNSCs). Interestingly, ex vivo fucosylation of hNSCs not only did not improve the cells homing into the brain injured by stroke following intravenous administration but also increased mortality of rats compared with the nonfucosylated hNSC group. Efforts to explain these unexpected findings using a three-dimensional flow chamber device revealed that transmigration of fhNSCs (under conditions of physiological shear stress) mediated by stromal cell-derived factor 1α was significantly decreased compared with controls. Further analysis revealed that hNSCs poorly withstand physiological shear stress, and their ability is further decreased following fucosylation. In addition, fhNSCs demonstrated a higher frequency of cellular aggregate formation as well as a tendency for removal of fucose from the cell surface. In summary, our findings suggest that the behavior of hNSCs in circulation is different from that observed with other cell types and that, at least for stroke, intravenous administration is a suboptimal route, even when the in vitro rolling ability of hNSCs is optimized by enforced fucosylation.
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Affiliation(s)
- Valentina Goncharova
- Torrey Pines Institute for Molecular Studies, San Diego, California, USA; Sanford-Burnham Medical Research Institute, La Jolla, California, USA; America Stem Cell Inc., San Diego, California, USA; Cascade LifeSciences Inc., San Diego, California, USA
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41
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Selectins and their ligands are required for homing and engraftment of BCR-ABL1+ leukemic stem cells in the bone marrow niche. Blood 2014; 123:1361-71. [PMID: 24394666 DOI: 10.1182/blood-2013-11-538694] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We investigated adhesion pathways that contribute to engraftment of breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1 (BCR-ABL1)-induced chronic myelogenous leukemia (CML)-like myeloproliferative neoplasia in a mouse retroviral transduction/transplantation model. Compared with normal stem/progenitor cells, BCR-ABL1(+) progenitors had similar expression of very late antigen-4 (VLA4), VLA5, leukocyte functional antigen-1, and CXCR4 but lower expression of P-selectin glycoprotein ligand-1 (PSGL-1) and of L-selectin. Whereas vascular cell adhesion molecule-1 and P-selectin were not required, deficiency of E-selectin in the recipient bone marrow endothelium significantly reduced engraftment by BCR-ABL1-expressing stem cells following intravenous injection, with leukemogenesis restored by direct intrafemoral injection. BCR-ABL1-expressing cells deficient for PSGL-1 or the selectin ligand-synthesizing enzymes core-2 β1,6-N-acetylglucosaminyltransferase or fucosyltransferases IV/VII were impaired for engraftment, and destruction of selectin ligands on leukemic progenitors by neuraminidase reduced engraftment. BCR-ABL1-expressing L-selectin-deficient progenitors were also defective in homing and engraftment, with leukemogenesis rescued by coexpression of chimeric E/L-selectin. Antibody to L-selectin decreased the engraftment of BCR-ABL1-transduced stem cells. These results establish that BCR-ABL1(+) leukemic stem cells rely to a greater extent on selectins and their ligands for homing and engraftment than do normal stem cells. Selectin blockade is a novel strategy to exploit differences between normal and leukemic stem cells that may be beneficial in autologous transplantation for CML and perhaps other leukemias.
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42
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Hoos A, Protsyuk D, Borsig L. Metastatic growth progression caused by PSGL-1-mediated recruitment of monocytes to metastatic sites. Cancer Res 2013; 74:695-704. [PMID: 24322980 DOI: 10.1158/0008-5472.can-13-0946] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tumor cell-derived selectin ligands mediate contact to the endothelium, platelets, and leukocytes through binding to selectins that facilitates metastasis. Here, we describe the mechanism of how endogenous (non-tumor derived) selectin ligands contribute to metastasis using α(1,3)fucosyltransferase 7 (Fuc-TVII(-/-))-deficient mice. Experimental metastasis of MC-38GFP and Lewis lung (3LL) carcinoma cells was attenuated in Fuc-TVII(-/-) mice, which express minimal amount of selectin ligands. We show that metastasis is dependent on selectin ligands carried on hematopoietic cells. P-selectin glycoprotein ligand-1 (PSGL-1) was identified as the major ligand facilitating monocyte accumulation at metastatic sites. Reduced recruitment of monocytes to metastasizing tumor cells in Fuc-TVII(-/-) mice correlated with attenuated metastasis. Adoptive transfer of Fuc-T7(+) monocytes rescued metastasis in Fuc-TVII(-/-) mice, indicating that selectin ligand-dependent recruitment of monocytes is required for cancer progression. Cytokine analysis in metastatic lungs revealed high expression of CCL2 in C57BL/6 mice that was significantly lower in Fuc-TVII(-/-) mice. The absence of monocyte recruitment in Fuc-TVII(-/-) mice correlated with increased apoptosis of tumor cells. Thus, the recruitment of monocytes to metastasizing tumor cells is facilitated by endogenous selectin ligands on monocytes that enable efficient tumor cell survival, extravasation, and metastasis.
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Affiliation(s)
- Alexandra Hoos
- Authors' Affiliation: Institute of Physiology, University of Zürich and Zürich Center for Integrative Human Physiology, Zurich, Switzerland
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43
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Stadtmann A, Germena G, Block H, Boras M, Rossaint J, Sundd P, Lefort C, Fisher CI, Buscher K, Gelschefarth B, Urzainqui A, Gerke V, Ley K, Zarbock A. The PSGL-1-L-selectin signaling complex regulates neutrophil adhesion under flow. ACTA ACUST UNITED AC 2013; 210:2171-80. [PMID: 24127491 PMCID: PMC3804951 DOI: 10.1084/jem.20130664] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Neutrophils are recruited from the blood to sites of inflammation, where they contribute to immune defense but may also cause tissue damage. During inflammation, neutrophils roll along the microvascular endothelium before arresting and transmigrating. Arrest requires conformational activation of the integrin lymphocyte function-associated antigen 1 (LFA-1), which can be induced by selectin engagement. Here, we demonstrate that a subset of P-selectin glycoprotein ligand-1 (PSGL-1) molecules is constitutively associated with L-selectin. Although this association does not require the known lectin-like interaction between L-selectin and PSGL-1, the signaling output is dependent on this interaction and the cytoplasmic tail of L-selectin. The PSGL-1-L-selectin complex signals through Src family kinases, ITAM domain-containing adaptor proteins, and other kinases to ultimately result in LFA-1 activation. The PSGL-1-L-selectin complex-induced signaling effects on neutrophil slow rolling and recruitment in vivo demonstrate the functional importance of this pathway. We conclude that this is a signaling complex specialized for sensing adhesion under flow.
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Affiliation(s)
- Anika Stadtmann
- Department of Anesthesiology, Intensive Care, and Pain Medicine; and 2 Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation; University of Münster, 48149 Münster, Germany
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44
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Coordinated and unique functions of the E-selectin ligand ESL-1 during inflammatory and hematopoietic recruitment in mice. Blood 2013; 122:3993-4001. [PMID: 24106206 DOI: 10.1182/blood-2013-07-514497] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Beyond its well-established roles in mediating leukocyte rolling, E-selectin is emerging as a multifunctional receptor capable of inducing integrin activation in neutrophils, and of regulating various biological processes in hematopoietic precursors. Although these effects suggest important homeostatic contributions of this selectin in the immune and hematologic systems, the ligands responsible for transducing these effects in different leukocyte lineages are not well defined. We have characterized mice deficient in E-selectin ligand-1 (ESL-1), or in both P-selectin glycoprotein-1 (PSGL-1) and ESL-1, to explore and compare the contributions of these glycoproteins in immune and hematopoietic cell trafficking. In the steady state, ESL-1 deficiency resulted in a moderate myeloid expansion that became more prominent when both glycoproteins were eliminated. During inflammation, PSGL-1 dominated E-selectin binding, rolling, integrin activation, and extravasation of mature neutrophils, but only the combined deficiency in PSGL-1 and ESL-1 completely abrogated leukocyte recruitment. Surprisingly, we find that the levels of ESL-1 were strongly elevated in hematopoietic progenitor cells. These elevations correlated with a prominent function of ESL-1 for E-selectin binding and for migration of hematopoietic progenitor cells into the bone marrow. Our results uncover dominant roles for ESL-1 in the immature compartment, and a functional shift toward PSGL-1 dependence in mature neutrophils.
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Miszti-Blasius K, Felszeghy S, Kiss C, Benkő I, Géresi K, Megyeri A, Hevessy Z, Kappelmayer J. P-selectin glycoprotein ligand-1 deficiency augments G-CSF induced myeloid cell mobilization. Naunyn Schmiedebergs Arch Pharmacol 2013; 387:109-18. [PMID: 24091681 DOI: 10.1007/s00210-013-0913-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 09/02/2013] [Indexed: 01/11/2023]
Abstract
The effect of granulocyte colony-stimulating factor (G-CSF) was investigated in P-selectin glycoprotein ligand-1 (PSGL-1) deficient (PSGL-1(-/-)) and wild-type (PSGL-1(+/+)) mice to establish the role of this mucin in myeloid cell mobilization. G-CSF activates tissue proteases that cleave adhesion molecules, thus enhances the mobilization of myeloid cells and haematopoietic stem cells. Cytopenia was induced with a single dose of cyclophosphamide. In PSGL-1(-/-) animals, we observed a delayed extravasation of mature myeloid cells from the peripheral vessels into the tissue compartments and their faster mobilization from the bone marrow. Subsequently, animals received G-CSF twice a day for 4 days. Neutrophil and monocyte counts increased upon completion of G-CSF treatment and both values were significantly higher in PSGL-1(-/-) mice; 47.7 versus 28.3 G/l for neutrophils and 4.1 versus 2.0 G/l for monocytes. The ratio of atypical myeloid cells was also elevated. Analyzing the causes of the above differences, we identified a 4-fold increase in the colony-forming unit (CFU-GM) counts of the peripheral blood in PSGL-1(-/-) mice, compared to wild-type animals. A significantly elevated number of CFU-GM was detected also in the femurs of PSGL-1(-/-) mice, 4 and 5 days after cyclophosphamide treatment and these values paralleled with the elevation of CD34+/CD117+ stem cell counts in the peripheral blood. Our data suggest, that in the absence of PSGL-1, G-CSF was more potent in elevating absolute myeloid cell numbers by acting on cell release from the bone marrow, maturation from circulating precursor cells in the peripheral blood and prolonged retainment in the circulation.
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Affiliation(s)
- Kornél Miszti-Blasius
- Department of Laboratory Medicine, Medical and Health Science Center, University of Debrecen, Nagyerdei krt 98, 4032, Debrecen, Hungary
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Elevated CXCL1 expression in gp130-deficient endothelial cells impairs neutrophil migration in mice. Blood 2013; 122:3832-42. [PMID: 24081661 DOI: 10.1182/blood-2012-12-473835] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Neutrophils emigrate from venules to sites of infection or injury in response to chemotactic gradients. How these gradients form is not well understood. Some IL-6 family cytokines stimulate endothelial cells to express adhesion molecules and chemokines that recruit leukocytes. Receptors for these cytokines share the signaling subunit gp130. We studied knockout mice lacking gp130 in endothelial cells. Unexpectedly, gp130-deficient endothelial cells constitutively expressed more CXCL1 in vivo and in vitro, and even more upon stimulation with tumor necrosis factor-α. Mobilization of this increased CXCL1 from intracellular stores to the venular surface triggered β2 integrin-dependent arrest of neutrophils rolling on selectins but impaired intraluminal crawling and transendothelial migration. Superfusing CXCL1 over venules promoted neutrophil migration only after intravenously injecting mAb to CXCL1 to diminish its intravascular function or heparinase to release CXCL1 from endothelial proteoglycans. Remarkably, mice lacking gp130 in endothelial cells had impaired histamine-induced venular permeability, which was restored by injecting anti-P-selectin mAb to prevent neutrophil rolling and arrest. Thus, excessive CXCL1 expression in gp130-deficient endothelial cells augments neutrophil adhesion but hinders migration, most likely by disrupting chemotactic gradients. Our data define a role for endothelial cell gp130 in regulating integrin-dependent adhesion and de-adhesion of neutrophils during inflammation.
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Herzog BH, Fu J, Wilson SJ, Hess PR, Sen A, McDaniel JM, Pan Y, Sheng M, Yago T, Silasi-Mansat R, McGee S, May F, Nieswandt B, Morris AJ, Lupu F, Coughlin SR, McEver RP, Chen H, Kahn ML, Xia L. Podoplanin maintains high endothelial venule integrity by interacting with platelet CLEC-2. Nature 2013; 502:105-9. [PMID: 23995678 PMCID: PMC3791160 DOI: 10.1038/nature12501] [Citation(s) in RCA: 259] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 07/23/2013] [Indexed: 12/23/2022]
Abstract
Circulating lymphocytes continuously enter lymph nodes (LNs) for immune surveillance through specialised blood vessels named high endothelial venules (HEVs)1–5, a process that increases dramatically during immune responses. How HEVs permit lymphocyte transmigration while maintaining vascular integrity is unknown. Here, we report a role for the transmembrane O-glycoprotein podoplanin (PDPN, also known as gp38 and T1α)6–8 in maintaining HEV barrier function. Mice with postnatal deletion of PDPN lost HEV integrity and exhibited spontaneous bleeding in mucosal LNs, and bleeding in the draining peripheral LN after immunisation. Blocking lymphocyte homing rescued bleeding, indicating that PDPN is required to protect the barrier function of HEVs during lymphocyte trafficking. Further analyses demonstrated that PDPN expressed on fibroblastic reticular cells (FRCs)7, which surround HEVs, functions as an activating ligand for platelet C-type lectin-like receptor 2 (CLEC-2)9,10. Mice lacking FRC PDPN or platelet CLEC-2 exhibited significantly reduced levels of VE-cadherin (VE-cad), which is essential for overall vascular integrity11,12, on HEVs. Infusion of wild-type (WT) platelets restored HEV integrity in CLEC-2-deficient mice. Activation of CLEC-2 induced release of sphingosine-1-phosphate (S1P)13,14 from platelets, which promoted expression of VE-cad on HEVs ex vivo. Furthermore, draining peripheral LNs of immunised mice lacking S1P had impaired HEV integrity similar to PDPN- and CLEC-2-deficient mice. These data demonstrate that local S1P release after PDPN-CLEC-2-mediated platelet activation is critical for HEV integrity during immune responses.
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Affiliation(s)
- Brett H Herzog
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, USA
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Nabors LK, Wang LD, Wagers AJ, Kansas GS. Overlapping roles for endothelial selectins in murine hematopoietic stem/progenitor cell homing to bone marrow. Exp Hematol 2013; 41:588-96. [PMID: 23499761 PMCID: PMC3700604 DOI: 10.1016/j.exphem.2013.02.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 02/25/2013] [Accepted: 02/27/2013] [Indexed: 12/11/2022]
Abstract
Selectins are carbohydrate-binding adhesion molecules that are critically involved in leukocyte recognition of endothelium. The endothelial selectins have been implicated in homing of hematopoietic stem and progenitor cells (HSPCs) to the bone marrow (BM) during bone marrow transplant (BMT), but the precise roles of individual selectins in this process have never been defined. BMT of lethally irradiated mice lacking both endothelial selectins (E/P KO) with limiting numbers of wild type BM cells rescued significantly fewer E/P KO than WT recipients, but higher numbers of transplanted WT cells rescued E/P KOs in a dose-dependent fashion. Short-term homing assays confirmed a substantial defect in HSPC homing to BM in E/P KO mice. In contrast, BMT of E-selectin null or P-selectin null mice at limiting cell number uniformly rescued greater than 95% of the transplanted animals. Consistent with these functional results, flow cytometric analysis revealed both E-selectin ligands and P-selectin ligands on distinct subsets of HSPC. These results demonstrate overlapping functions for the endothelial selectins in HSPC homing to BM in the setting of BMT, and define a novel aspect of HSPC heterogeneity linked to selectin ligand expression.
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Affiliation(s)
- L. Karina Nabors
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Leo D. Wang
- Department of Stem Cell and Regenerative Biology, Harvard University, Harvard Stem Cell Institute, 7 Divinity Ave, Cambridge, MA
- Joslin Diabetes Center, One Joslin Place, Boston, MA
- Dana-Farber/Children’s Hospital Cancer Center, Boston, MA
| | - Amy J. Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University, Harvard Stem Cell Institute, 7 Divinity Ave, Cambridge, MA
- Joslin Diabetes Center, One Joslin Place, Boston, MA
- Howard Hughes Medical Institute, Boston, MA
| | - Geoffrey S. Kansas
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL
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Leukocyte transmigration across endothelial and extracellular matrix protein barriers in liver ischemia/reperfusion injury. Curr Opin Organ Transplant 2013; 16:34-40. [PMID: 21150609 DOI: 10.1097/mot.0b013e328342542e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW Hepatic ischemia reperfusion injury (IRI) linked to leukocyte recruitment and subsequent release of cytokines and free radicals remains a significant complication in organ transplantation. The aim of this review is to bring attention to advances made in our understanding of the mechanisms of leukocyte recruitment to sites of inflammatory stimulation in liver IRI. RECENT FINDINGS Leukocyte transmigration across endothelial and extracellular matrix barriers is dependent on adhesive events, as well as on focal matrix degradation mechanisms. Whereas adhesion molecules are critical for the successful promotion of leukocyte transmigration by providing leukocyte attachment to the vascular endothelium, matrix metalloproteinases (MMPs) are important for facilitating leukocyte movement across vascular barriers. Among different MMPs, MMP-9, an inducible gelatinase expressed by leukocytes during hepatic IRI, is emerging as an important mediator of leukocyte traffic to inflamed liver. SUMMARY It is generally accepted that the understanding of the molecular mechanisms involved in leukocyte recruitment will lead to the development of novel targeted therapeutic approaches for hepatic IRI and liver transplantation. Here, we review mechanisms of leukocyte traffic in liver IRI and the role of some of the proteins that are thought to be important for this process.
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Abstract
In adult mammals, leukocyte recruitment follows a well-defined cascade of adhesion events enabling leukocytes to leave the circulatory system and transmigrate into tissue. Currently, it is unclear whether leukocyte recruitment proceeds in a similar fashion during fetal development. Considering the fact that the incidence of neonatal sepsis increases dramatically with decreasing gestational age in humans, we hypothesized that leukocyte recruitment may be acquired only late during fetal ontogeny. To test this, we developed a fetal intravital microscopy model in pregnant mice and, using LysEGFP (neutrophil reporter) mice, investigated leukocyte recruitment during fetal development. We show that fetal blood neutrophils acquire the ability to roll and adhere on inflamed yolk sac vessels during late fetal development, whereas at earlier embryonic stages (before day E15), rolling and adhesion were essentially absent. Accordingly, flow chamber experiments showed that fetal EGFP(+) blood cells underwent efficient adhesion only when they were harvested on or after E15. Fluorescence-activated cell sorter analysis on EGFP(+) fetal blood cells revealed that surface expression of CXCR2 and less pronounced P-selectin glycoprotein ligand-1 (PSGL-1) begin to increase only late in fetal life. Taken together, our findings demonstrate that inflammation-induced leukocyte recruitment is ontogenetically regulated and enables efficient neutrophil trafficking only during late fetal life.
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