1
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Newport E, Pedrosa AR, Lees D, Dukinfield M, Carter E, Gomez-Escudero J, Casado P, Rajeeve V, Reynolds LE, R Cutillas P, Duffy SW, De Luxán Delgado B, Hodivala-Dilke K. Elucidating the role of the kinase activity of endothelial cell focal adhesion kinase in angiocrine signalling and tumour growth. J Pathol 2022; 256:235-247. [PMID: 34743335 DOI: 10.1002/path.5833] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/21/2021] [Accepted: 11/03/2021] [Indexed: 11/08/2022]
Abstract
A common limitation of cancer treatments is chemotherapy resistance. We have previously identified that endothelial cell (EC)-specific deletion of focal adhesion kinase (FAK) sensitises tumour cells to DNA-damaging therapies, reducing tumour growth in mice. The present study addressed the kinase activity dependency of EC FAK sensitisation to the DNA-damaging chemotherapeutic drug, doxorubicin. FAK is recognised as a therapeutic target in tumour cells, leading to the development of a range of inhibitors, the majority being ATP competitive kinase inhibitors. We demonstrate that inactivation of EC FAK kinase domain (kinase dead; EC FAK-KD) in established subcutaneous B16F0 tumours improves melanoma cell sensitisation to doxorubicin. Doxorubicin treatment in EC FAK-KD mice reduced the percentage change in exponential B16F0 tumour growth further than in wild-type mice. There was no difference in tumour blood vessel numbers, vessel perfusion or doxorubicin delivery between genotypes, suggesting a possible angiocrine effect on the regulation of tumour growth. Doxorubicin reduced perivascular malignant cell proliferation, while enhancing perivascular tumour cell apoptosis and DNA damage in tumours grown in EC FAK-KD mice 48 h after doxorubicin injection. Human pulmonary microvascular ECs treated with the pharmacological FAK kinase inhibitors defactinib, PF-562,271 or PF-573,228 in combination with doxorubicin also reduced cytokine expression levels. Together, these data suggest that targeting EC FAK kinase activity may alter angiocrine signals that correlate with improved acute tumour cell chemosensitisation. © 2021 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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MESH Headings
- Angiogenesis Inhibitors/pharmacology
- Animals
- Antibiotics, Antineoplastic/pharmacology
- Apoptosis
- Cell Line, Tumor
- Cell Proliferation
- Cytokines/metabolism
- Doxorubicin/pharmacology
- Drug Resistance, Neoplasm
- Endothelial Cells/enzymology
- Female
- Focal Adhesion Kinase 1/antagonists & inhibitors
- Focal Adhesion Kinase 1/genetics
- Focal Adhesion Kinase 1/metabolism
- Humans
- Male
- Melanoma, Experimental/drug therapy
- Melanoma, Experimental/enzymology
- Melanoma, Experimental/genetics
- Melanoma, Experimental/pathology
- Mice, Inbred C57BL
- Mice, Knockout
- Neovascularization, Physiologic
- Protein Kinase Inhibitors/pharmacology
- Signal Transduction
- Skin Neoplasms/drug therapy
- Skin Neoplasms/enzymology
- Skin Neoplasms/genetics
- Skin Neoplasms/pathology
- Tumor Burden
- Mice
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Affiliation(s)
- Emma Newport
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Ana Rita Pedrosa
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Delphine Lees
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Matthew Dukinfield
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Edward Carter
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Jesus Gomez-Escudero
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Pedro Casado
- Centre for Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Vinothini Rajeeve
- Centre for Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Louise E Reynolds
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Pedro R Cutillas
- Centre for Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | | | - Beatriz De Luxán Delgado
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
| | - Kairbaan Hodivala-Dilke
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London, UK
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2
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Swaminathan B, Youn SW, Naiche LA, Du J, Villa SR, Metz JB, Feng H, Zhang C, Kopan R, Sims PA, Kitajewski JK. Endothelial Notch signaling directly regulates the small GTPase RND1 to facilitate Notch suppression of endothelial migration. Sci Rep 2022; 12:1655. [PMID: 35102202 PMCID: PMC8804000 DOI: 10.1038/s41598-022-05666-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/07/2022] [Indexed: 11/24/2022] Open
Abstract
To control sprouting angiogenesis, endothelial Notch signaling suppresses tip cell formation, migration, and proliferation while promoting barrier formation. Each of these responses may be regulated by distinct Notch-regulated effectors. Notch activity is highly dynamic in sprouting endothelial cells, while constitutive Notch signaling drives homeostatic endothelial polarization, indicating the need for both rapid and constitutive Notch targets. In contrast to previous screens that focus on genes regulated by constitutively active Notch, we characterized the dynamic response to Notch. We examined transcriptional changes from 1.5 to 6 h after Notch signal activation via ligand-specific or EGTA induction in cultured primary human endothelial cells and neonatal mouse brain. In each combination of endothelial type and Notch manipulation, transcriptomic analysis identified distinct but overlapping sets of rapidly regulated genes and revealed many novel Notch target genes. Among the novel Notch-regulated signaling pathways identified were effectors in GPCR signaling, notably, the constitutively active GTPase RND1. In endothelial cells, RND1 was shown to be a novel direct Notch transcriptional target and required for Notch control of sprouting angiogenesis, endothelial migration, and Ras activity. We conclude that RND1 is directly regulated by endothelial Notch signaling in a rapid fashion in order to suppress endothelial migration.
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Affiliation(s)
- Bhairavi Swaminathan
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Seock-Won Youn
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - L A Naiche
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Jing Du
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Stephanie R Villa
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Jordan B Metz
- Department of Systems Biology, Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, 10032, USA
| | - Huijuan Feng
- Department of Systems Biology, Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, 10032, USA
| | - Chaolin Zhang
- Department of Systems Biology, Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, 10032, USA
| | - Raphael Kopan
- Division of Developmental Biology, Department of Pediatrics, University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Peter A Sims
- Department of Systems Biology, Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, 10032, USA
| | - Jan K Kitajewski
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA.
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3
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Akhmedov A, Crucet M, Simic B, Kraler S, Bonetti NR, Ospelt C, Distler O, Ciurea A, Liberale L, Jauhiainen M, Metso J, Miranda M, Cydecian R, Schwarz L, Fehr V, Zilinyi R, Amrollahi-Sharifabadi M, Ntari L, Karagianni N, Ruschitzka F, Laaksonen R, Vanhoutte PM, Kollias G, Camici GG, Lüscher TF. TNFα induces endothelial dysfunction in rheumatoid arthritis via LOX-1 and arginase 2: reversal by monoclonal TNFα antibodies. Cardiovasc Res 2022; 118:254-266. [PMID: 33483748 DOI: 10.1093/cvr/cvab005] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 01/08/2021] [Indexed: 02/02/2023] Open
Abstract
AIMS Rheumatoid arthritis (RA) is a chronic inflammatory disease affecting joints and blood vessels. Despite low levels of low-density lipoprotein cholesterol (LDL-C), RA patients exhibit endothelial dysfunction and are at increased risk of death from cardiovascular complications, but the molecular mechanism of action is unknown. We aimed in the present study to identify the molecular mechanism of endothelial dysfunction in a mouse model of RA and in patients with RA. METHODS AND RESULTS Endothelium-dependent relaxations to acetylcholine were reduced in aortae of two tumour necrosis factor alpha (TNFα) transgenic mouse lines with either mild (Tg3647) or severe (Tg197) forms of RA in a time- and severity-dependent fashion as assessed by organ chamber myograph. In Tg197, TNFα plasma levels were associated with severe endothelial dysfunction. LOX-1 receptor was markedly up-regulated leading to increased vascular oxLDL uptake and NFκB-mediated enhanced Arg2 expression via direct binding to its promoter resulting in reduced NO bioavailability and vascular cGMP levels as shown by ELISA and chromatin immunoprecipitation. Anti-TNFα treatment with infliximab normalized endothelial function together with LOX-1 and Arg2 serum levels in mice. In RA patients, soluble LOX-1 serum levels were also markedly increased and closely related to serum levels of C-reactive protein. Similarly, ARG2 serum levels were increased. Similarly, anti-TNFα treatment restored LOX-1 and ARG2 serum levels in RA patients. CONCLUSIONS Increased TNFα levels not only contribute to RA, but also to endothelial dysfunction by increasing vascular oxLDL content and activation of the LOX-1/NFκB/Arg2 pathway leading to reduced NO bioavailability and decreased cGMP levels. Anti-TNFα treatment improved both articular symptoms and endothelial function by reducing LOX-1, vascular oxLDL, and Arg2 levels.
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MESH Headings
- Adult
- Animals
- Animals, Genetically Modified
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/enzymology
- Aorta, Thoracic/immunology
- Aorta, Thoracic/physiopathology
- Arginase/genetics
- Arginase/metabolism
- Arthritis, Rheumatoid/drug therapy
- Arthritis, Rheumatoid/enzymology
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/physiopathology
- Case-Control Studies
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/enzymology
- Endothelial Cells/immunology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/enzymology
- Endothelium, Vascular/immunology
- Endothelium, Vascular/physiopathology
- Female
- Humans
- Lipoproteins, LDL/metabolism
- Male
- Mice, Inbred C57BL
- Mice, Inbred CBA
- Middle Aged
- NF-kappa B/metabolism
- Scavenger Receptors, Class E/genetics
- Scavenger Receptors, Class E/metabolism
- Signal Transduction
- Tumor Necrosis Factor Inhibitors/therapeutic use
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/metabolism
- Vasodilation/drug effects
- Mice
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Affiliation(s)
- Alexander Akhmedov
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Margot Crucet
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Branko Simic
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Simon Kraler
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Nicole R Bonetti
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Caroline Ospelt
- Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Oliver Distler
- Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Adrian Ciurea
- Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Luca Liberale
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
- Department of Internal Medicine and Medical Specialties, University of Genova, Genova, Italy
| | - Matti Jauhiainen
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, Helsinki, Finland
| | - Jari Metso
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, Helsinki, Finland
| | - Melroy Miranda
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Rose Cydecian
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Lena Schwarz
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Vera Fehr
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
| | - Rita Zilinyi
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | | | - Lydia Ntari
- Institute for Immunology, Biomedical Sciences Research Center Alexander Fleming, Vari, Greece
| | - Niki Karagianni
- Institute for Immunology, Biomedical Sciences Research Center Alexander Fleming, Vari, Greece
| | - Frank Ruschitzka
- Department of Cardiology, University Heart Center, University Hospital, Zürich, Switzerland
| | - Reijo Laaksonen
- Zora Biosciences Oy, Espoo, Finland
- Finnish Cardiovascular Research Center, University of Tampere and Finnish Clinical Biobank Tampere, Tampere University Hospital, Tampere, Finland
| | - Paul M Vanhoutte
- Department of Pharmacology, Hong Kong University, Hong Kong, Peoples Republic of China
| | - George Kollias
- Institute for Immunology, Biomedical Sciences Research Center Alexander Fleming, Vari, Greece
| | - Giovanni G Camici
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
- Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, 8001 Zurich, Switzerland
- Royal Brompton and Harefield Hospitals and Imperial College, London, UK
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4
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Kant S, Tran KV, Kvandova M, Caliz AD, Yoo HJ, Learnard H, Dolan AC, Craige SM, Hall JD, Jiménez JM, St. Hilaire C, Schulz E, Kröller-Schön S, Keaney JF. PGC1α Regulates the Endothelial Response to Fluid Shear Stress via Telomerase Reverse Transcriptase Control of Heme Oxygenase-1. Arterioscler Thromb Vasc Biol 2022; 42:19-34. [PMID: 34789002 PMCID: PMC8702461 DOI: 10.1161/atvbaha.121.317066] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Fluid shear stress (FSS) is known to mediate multiple phenotypic changes in the endothelium. Laminar FSS (undisturbed flow) is known to promote endothelial alignment to flow, which is key to stabilizing the endothelium and rendering it resistant to atherosclerosis and thrombosis. The molecular pathways responsible for endothelial responses to FSS are only partially understood. In this study, we determine the role of PGC1α (peroxisome proliferator gamma coactivator-1α)-TERT (telomerase reverse transcriptase)-HMOX1 (heme oxygenase-1) during shear stress in vitro and in vivo. Approach and Results: Here, we have identified PGC1α as a flow-responsive gene required for endothelial flow alignment in vitro and in vivo. Compared with oscillatory FSS (disturbed flow) or static conditions, laminar FSS (undisturbed flow) showed increased PGC1α expression and its transcriptional coactivation. PGC1α was required for laminar FSS-induced expression of TERT in vitro and in vivo via its association with ERRα(estrogen-related receptor alpha) and KLF (Kruppel-like factor)-4 on the TERT promoter. We found that TERT inhibition attenuated endothelial flow alignment, elongation, and nuclear polarization in response to laminar FSS in vitro and in vivo. Among the flow-responsive genes sensitive to TERT status, HMOX1 was required for endothelial alignment to laminar FSS. CONCLUSIONS These data suggest an important role for a PGC1α-TERT-HMOX1 axis in the endothelial stabilization response to laminar FSS.
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Affiliation(s)
- Shashi Kant
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- Equal contribution
| | - Khanh-Van Tran
- Division of Cardiovascular Medicine, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01655
- Equal contribution
| | - Miroslava Kvandova
- Department of Cardiology, University Medical Center, Mainz, Germany
- Equal contribution
| | - Amada D. Caliz
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Hyung-Jin Yoo
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Heather Learnard
- Division of Cardiovascular Medicine, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01655
| | - Ana C. Dolan
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Siobhan M. Craige
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blackburg, VA 24061
| | - Joshua D. Hall
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA 01003
| | - Juan M. Jiménez
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA 01003
| | - Cynthia St. Hilaire
- Division of Cardiology, Departments of Medicine and Bioengineering, and the Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261
| | - Eberhard Schulz
- Department of Cardiology, Allgemeines Krankenhaus, Celle, Germany
| | | | - John F. Keaney
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
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5
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Begum MK, Konja D, Singh S, Chlopicki S, Wang Y. Endothelial SIRT1 as a Target for the Prevention of Arterial Aging: Promises and Challenges. J Cardiovasc Pharmacol 2021; 78:S63-S77. [PMID: 34840264 DOI: 10.1097/fjc.0000000000001154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 09/25/2021] [Indexed: 12/15/2022]
Abstract
ABSTRACT SIRT1, a member of the sirtuin family of longevity regulators, possesses potent activities preventing vascular aging. The expression and function of SIRT1 in endothelial cells are downregulated with age, in turn causing early vascular aging and predisposing various vascular abnormalities. Overexpression of SIRT1 in the vascular endothelium prevents aging-associated endothelial dysfunction and senescence, thus the development of hypertension and atherosclerosis. Numerous efforts have been directed to increase SIRT1 signaling as a potential strategy for different aging-associated diseases. However, the complex mechanisms underlying the regulation of SIRT1 have posed a significant challenge toward the design of specific and effective therapeutics. This review aimed to provide a summary on the regulation and function of SIRT1 in the vascular endothelium and to discuss the different approaches targeting this molecule for the prevention and treatment of age-related cardiovascular and cerebrovascular diseases.
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Affiliation(s)
- Musammat Kulsuma Begum
- The State Key Laboratory of Pharmaceutical Biotechnology
- The Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong SAR, China
| | - Daniels Konja
- The State Key Laboratory of Pharmaceutical Biotechnology
- The Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong SAR, China
| | - Sandeep Singh
- The State Key Laboratory of Pharmaceutical Biotechnology
- The Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong SAR, China
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland; and
- Chair of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
| | - Yu Wang
- The State Key Laboratory of Pharmaceutical Biotechnology
- The Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong SAR, China
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6
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Zheng Z, Wang X, Wang Y, King JAC, Xie P, Wu S. CaMK4 is a downstream effector of the α 1G T-type calcium channel to determine the angiogenic potential of pulmonary microvascular endothelial cells. Am J Physiol Cell Physiol 2021; 321:C964-C977. [PMID: 34586897 DOI: 10.1152/ajpcell.00216.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/27/2021] [Indexed: 01/25/2023]
Abstract
Pulmonary microvascular endothelial cells (PMVECs) uniquely express an α1G-subtype of voltage-gated T-type Ca2+ channel. We have previously revealed that the α1G channel functions as a background Ca2+ entry pathway that is critical for the cell proliferation, migration, and angiogenic potential of PMVECs, a novel function attributed to the coupling between α1G-mediated Ca2+ entry and constitutive Akt phosphorylation and activation. Despite this significance, mechanism(s) that link the α1G-mediated Ca2+ entry to Akt phosphorylation remain incompletely understood. In this study, we demonstrate that Ca2+/calmodulin-dependent protein kinase (CaMK) 4 serves as a downstream effector of the α1G-mediated Ca2+ entry to promote the angiogenic potential of PMVECs. Notably, CaMK2 and CaMK4 are both expressed in PMVECs. Pharmacological blockade or genetic knockdown of the α1G channel led to a significant reduction in the phosphorylation level of CaMK4 but not the phosphorylation level of CaMK2. Pharmacological inhibition as well as genetic knockdown of CaMK4 significantly decreased cell proliferation, migration, and network formation capacity in PMVECs. However, CaMK4 inhibition or knockdown did not alter Akt phosphorylation status in PMVECs, indicating that α1G/Ca2+/CaMK4 is independent of the α1G/Ca2+/Akt pathway in sustaining the cells' angiogenic potential. Altogether, these findings suggest a novel α1G-CaMK4 signaling complex that regulates the Ca2+-dominated angiogenic potential in PMVECs.
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Affiliation(s)
- Zhen Zheng
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Xuelin Wang
- Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - Yuxia Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Judy A C King
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, Louisiana
| | - Peilin Xie
- Department of Anesthesiology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Songwei Wu
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, Alabama
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7
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Shi Z, Yao J, Ma X, Xu D, Ming G. CUL5-Mediated Visfatin (NAMPT) Degradation Blocks Endothelial Proliferation and Angiogenesis via the MAPK/PI3K-AKT Signaling. J Cardiovasc Pharmacol 2021; 78:891-899. [PMID: 34596622 DOI: 10.1097/fjc.0000000000001146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 09/10/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Endothelial dysfunction participates in the pathogenesis of various cardiovascular disorders, and dysregulated angiogenesis involves the vascular endothelial growth factor (VEGF)-matrix metalloproteinases (MMP) system. Nicotinamide phosphoribosyltransferase (NAMPT) is known to enhance endothelial function and angiogenesis. The study found that NAMPT overexpression protected human coronary artery endothelial cells (HCAECs) from H2O2-induced injury through promoting cell viability, inhibiting cell apoptosis, enhancing cell motility, and promoting tube formation. Through analyses based on 2 Protein-Protein Interaction databases, Mentha and BioGrid, we identified CUL5 as a protein that may interact with NAMPT, which was then validated by Co-IP experiments. Through interacting with NAMPT, CUL5 inhibited NAMPT expression. In contrast to NAMPT, CUL5 overexpression further aggravated H2O2-induced HCAEC dysfunction. In the meantime, CUL5 overexpression reduced, whereas NAMPT overexpression increased the phosphorylation of p38 and Akt and the protein levels of VEGF and MMP2. More importantly, NAMPT overexpression partially reversed the effects of CUL5 overexpression on H2O2-stimulated HCAECs and the MAPK/phosphatidylinositol 3-kinase-Akt/VEGF/MMP signaling. In conclusion, CUL5 interacts with NAMPT in H2O2-stimulated HCAECs, suppressing cell viability, promoting cell apoptosis, and inhibiting cell mobility and tube formation. NAMPT overexpression protects against H2O2-induced HCAEC dysfunction by promoting cell viability, inhibiting cell apoptosis, and enhancing cell mobility and tube formation.
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Affiliation(s)
- Zanhua Shi
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China ; and
| | - Jiamei Yao
- Geriatric Department of Xiangya Hospital, National Clinical Research Center for Geriatric Disorders, International Medical Center of Xiangya Hospital, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xinhua Ma
- Department of Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China ; and
| | - Daomiao Xu
- Department of Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China ; and
| | - Guangfeng Ming
- Department of Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China ; and
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8
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Aguilar G, Córdova F, Koning T, Sarmiento J, Boric MP, Birukov K, Cancino J, Varas-Godoy M, Soza A, Alves NG, Mujica PE, Durán WN, Ehrenfeld P, Sánchez FA. TNF-α-activated eNOS signaling increases leukocyte adhesion through the S-nitrosylation pathway. Am J Physiol Heart Circ Physiol 2021; 321:H1083-H1095. [PMID: 34652985 PMCID: PMC8782658 DOI: 10.1152/ajpheart.00065.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 09/30/2021] [Accepted: 09/30/2021] [Indexed: 12/21/2022]
Abstract
Nitric oxide (NO) is a key factor in inflammation. Endothelial nitric oxide synthase (eNOS), whose activity increases after stimulation with proinflammatory cytokines, produces NO in endothelium. NO activates two pathways: 1) soluble guanylate cyclase-protein kinase G and 2) S-nitrosylation (NO-induced modification of free-thiol cysteines in proteins). S-nitrosylation affects phosphorylation, localization, and protein interactions. NO is classically described as a negative regulator of leukocyte adhesion to endothelial cells. However, agonists activating NO production induce a fast leukocyte adhesion, which suggests that NO might positively regulate leukocyte adhesion. We tested the hypothesis that eNOS-induced NO promotes leukocyte adhesion through the S-nitrosylation pathway. We stimulated leukocyte adhesion to endothelium in vitro and in vivo using tumor necrosis factor-α (TNF-α) as proinflammatory agonist. ICAM-1 changes were evaluated by immunofluorescence, subcellular fractionation, immunoprecipitation, and fluorescence recovery after photobleaching (FRAP). Protein kinase Cζ (PKCζ) activity and S-nitrosylation were evaluated by Western blot analysis and biotin switch method, respectively. TNF-α, at short times of stimulation, activated the eNOS S-nitrosylation pathway and caused leukocyte adhesion to endothelial cells in vivo and in vitro. TNF-α-induced NO led to changes in ICAM-1 at the cell surface, which are characteristic of clustering. TNF-α-induced NO also produced S-nitrosylation and phosphorylation of PKCζ, association of PKCζ with ICAM-1, and ICAM-1 phosphorylation. The inhibition of PKCζ blocked leukocyte adhesion induced by TNF-α. Mass spectrometry analysis of purified PKCζ identified cysteine 503 as the only S-nitrosylated residue in the kinase domain of the protein. Our results reveal a new eNOS S-nitrosylation-dependent mechanism that induces leukocyte adhesion and suggests that S-nitrosylation of PKCζ may be an important regulatory step in early leukocyte adhesion in inflammation.NEW & NOTEWORTHY Contrary to the well-established inhibitory role of NO in leukocyte adhesion, we demonstrate a positive role of nitric oxide in this process. We demonstrate that NO induced by eNOS after TNF-α treatment induces early leukocyte adhesion activating the S-nitrosylation pathway. Our data suggest that PKCζ S-nitrosylation may be a key step in this process.
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Affiliation(s)
- Gaynor Aguilar
- Instituto de Inmunología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Francisco Córdova
- Instituto de Inmunología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Tania Koning
- Instituto de Inmunología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - José Sarmiento
- Instituto de Fisiología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Mauricio P Boric
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Konstantin Birukov
- Department of Anesthesiology, University of Maryland Baltimore School of Medicine, Baltimore, Maryland
| | - Jorge Cancino
- Centro de Biología Celular y Biomedicina, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Manuel Varas-Godoy
- Centro de Biología Celular y Biomedicina, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Andrea Soza
- Centro de Biología Celular y Biomedicina, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
- Facultad de Ciencias Biológicas, Centro de Envejecimiento y Regeneración, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Natascha G Alves
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, The State University of New Jersey, Newark, New Jersey
| | - Patricio E Mujica
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, The State University of New Jersey, Newark, New Jersey
- Department of Natural Sciences, School of Health and Natural Sciences, Mercy College, Dobbs Ferry, New York
| | - Walter N Durán
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, The State University of New Jersey, Newark, New Jersey
| | - Pamela Ehrenfeld
- Facultad de Medicina, Instituto de Anatomía, Histología y Patología, Universidad Austral de Chile, Valdivia, Chile
- Centro Interdisciplinario de Estudios del Sistema Nervioso, Universidad Austral de Chile, Valdivia, Chile
| | - Fabiola A Sánchez
- Instituto de Inmunología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
- Centro Interdisciplinario de Estudios del Sistema Nervioso, Universidad Austral de Chile, Valdivia, Chile
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9
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Molinaro R, Yu M, Sausen G, Bichsel CA, Corbo C, Folco EJ, Lee GY, Liu Y, Tesmenitsky Y, Shvartz E, Sukhova GK, Kloss F, Croce KJ, Farokhzad OC, Shi J, Libby P. Targeted delivery of protein arginine deiminase-4 inhibitors to limit arterial intimal NETosis and preserve endothelial integrity. Cardiovasc Res 2021; 117:2652-2663. [PMID: 33751034 PMCID: PMC8783386 DOI: 10.1093/cvr/cvab074] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/03/2021] [Indexed: 02/07/2023] Open
Abstract
AIMS Recent evidence suggests that 'vulnerable plaques', which have received intense attention as underlying mechanism of acute coronary syndromes over the decades, actually rarely rupture and cause clinical events. Superficial plaque erosion has emerged as a growing cause of residual thrombotic complications of atherosclerosis in an era of increased preventive measures including lipid lowering, antihypertensive therapy, and smoking cessation. The mechanisms of plaque erosion remain poorly understood, and we currently lack validated effective diagnostics or therapeutics for superficial erosion. Eroded plaques have a rich extracellular matrix, an intact fibrous cap, sparse lipid, and few mononuclear cells, but do harbour neutrophil extracellular traps (NETs). We recently reported that NETs amplify and propagate the endothelial damage at the site of arterial lesions that recapitulate superficial erosion in mice. We showed that genetic loss of protein arginine deiminase (PAD)-4 function inhibited NETosis and preserved endothelial integrity. The current study used systemic administration of targeted nanoparticles to deliver an agent that limits NETs formation to probe mechanisms of and demonstrate a novel therapeutic approach to plaque erosion that limits endothelial damage. METHODS AND RESULTS We developed Collagen IV-targeted nanoparticles (Col IV NP) to deliver PAD4 inhibitors selectively to regions of endothelial cell sloughing and collagen IV-rich basement membrane exposure. We assessed the binding capability of the targeting ligand in vitro and evaluated Col IV NP targeting to areas of denuded endothelium in vivo in a mouse preparation that recapitulates features of superficial erosion. Delivery of the PAD4 inhibitor GSK484 reduced NET accumulation at sites of intimal injury and preserved endothelial continuity. CONCLUSIONS NPs directed to Col IV show selective uptake and delivery of their payload to experimentally eroded regions, illustrating their translational potential. Our results further support the role of PAD4 and NETs in superficial erosion.
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Affiliation(s)
- Roberto Molinaro
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
- Business Development of Research, IRCCS San Raffaele Hospital, Milan, Italy
| | - Mikyung Yu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Grasiele Sausen
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Colette A Bichsel
- Department of Surgery, Vascular Biology Program, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Claudia Corbo
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- Department of Medicine and Surgery, Nanomedicine Center NANOMIB, University of Milano-Bicocca, Milano, Italy
| | - Eduardo J Folco
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Gha Young Lee
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yuan Liu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yevgenia Tesmenitsky
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Eugenia Shvartz
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Galina K Sukhova
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Frederik Kloss
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Kevin J Croce
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Omid C Farokhzad
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jinjun Shi
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Peter Libby
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
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10
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Murthy GG, Prideaux MA, Armstrong M, Kenney HM, Latchney SE, Susiarjo M, Murphy SP. Characterization of the temporal, cell-specific and interferon-inducible patterns of indoleamine 2,3 dioxygenase 1 (IDO1) expression in the human placenta across gestation. Placenta 2021; 115:129-138. [PMID: 34619429 DOI: 10.1016/j.placenta.2021.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 09/09/2021] [Indexed: 01/01/2023]
Abstract
INTRODUCTION The human placenta performs multiple functions necessary for successful pregnancy, but the metabolic pathways and molecular mechanisms responsible for regulating placental development and functions remain incompletely understood. Catabolism of the essential amino acid tryptophan has numerous critical roles in normal physiology, including inflammation. The kynurenine pathway, which accounts for ∼90% of tryptophan breakdown, is mediated by indoleamine 2,3 dioxygenase 1 (IDO1) in the placenta. In pregnant mice, alterations of IDO1 activity or expression result in fetal resorption and a preeclampsia-like phenotype. Decreased IDO1 expression at the maternal-fetal interface has also been linked to preeclampsia, in utero growth restriction and recurrent miscarriage in humans. These collective observations suggest essential role(s) for IDO1 in maintaining healthy pregnancy. Despite these important roles, the precise temporal, cell-specific and inflammatory cytokine-mediated patterns of IDO1 expression in the human placenta have not been thoroughly characterized across gestation. METHODS Western blot and whole mount immunofluorescence (WMIF) were utilized to characterize and quantify basal and interferon (IFN)-inducible IDO1 expression in 1st trimester (7-13 weeks), 2nd trimester (14-22 weeks) and term (39-41 weeks) placental villi. RESULTS IDO1 expression is activated in the human placenta between the 13th and 14th weeks of pregnancy, increases through the 2nd trimester and remains elevated at term. Constitutive IDO1 expression is restricted to placental endothelial cells. Interestingly, different types of IFNs have distinct effects on IDO1 expression in the human placenta. DISCUSSION Our collective results are consistent with potential role(s) for IDO1 in the regulation of vascular functions in placental villi.
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Affiliation(s)
- Gayathri Guru Murthy
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Mallory A Prideaux
- Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Madison Armstrong
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - H Mark Kenney
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Sarah E Latchney
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Martha Susiarjo
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Shawn P Murphy
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA; Department of Obstetrics and Gynecology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
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11
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Tobisawa Y, Fujita N, Yamamoto H, Ohyama C, Irie F, Yamaguchi Y. The cell surface hyaluronidase TMEM2 is essential for systemic hyaluronan catabolism and turnover. J Biol Chem 2021; 297:101281. [PMID: 34624311 PMCID: PMC8561002 DOI: 10.1016/j.jbc.2021.101281] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 11/26/2022] Open
Abstract
As a major component of the extracellular matrix, hyaluronan (HA) plays an important role in defining the biochemical and biophysical properties of tissues. In light of the extremely rapid turnover of HA and the impact of this turnover on HA biology, elucidating the molecular mechanisms underlying HA catabolism is key to understanding the in vivo functions of this unique polysaccharide. Here, we show that TMEM2, a recently identified cell surface hyaluronidase, plays an essential role in systemic HA turnover. Employing induced global Tmem2 knockout mice (Tmem2iKO), we determined the effects of Tmem2 ablation not only on the accumulation of HA in bodily fluids and organs, but also on the process of HA degradation in vivo. Within 3 weeks of tamoxifen-induced Tmem2 ablation, Tmem2iKO mice exhibit pronounced accumulation of HA in circulating blood and various organs, reaching levels as high as 40-fold above levels observed in control mice. Experiments using lymphatic and vascular injection of fluorescent HA tracers demonstrate that ongoing HA degradation in the lymphatic system and the liver is significantly impaired in Tmem2iKO mice. We also show that Tmem2 is strongly expressed in endothelial cells in the subcapsular sinus of lymph nodes and in the liver sinusoid, two primary sites implicated in systemic HA turnover. Our results establish TMEM2 as a physiologically relevant hyaluronidase with an essential role in systemic HA catabolism in vivo, acting primarily on the surface of endothelial cells in the lymph nodes and liver.
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Affiliation(s)
- Yuki Tobisawa
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Naoki Fujita
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Hayato Yamamoto
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA; Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Chikara Ohyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Fumitoshi Irie
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Yu Yamaguchi
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA.
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12
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Beyer AM, Norwood Toro LE, Hughes WE, Young M, Clough AV, Gao F, Medhora M, Audi SH, Jacobs ER. Autophagy, TERT, and mitochondrial dysfunction in hyperoxia. Am J Physiol Heart Circ Physiol 2021; 321:H985-H1003. [PMID: 34559580 PMCID: PMC8616608 DOI: 10.1152/ajpheart.00166.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 08/31/2021] [Accepted: 09/16/2021] [Indexed: 02/06/2023]
Abstract
Ventilation with gases containing enhanced fractions of oxygen is the cornerstone of therapy for patients with hypoxia and acute respiratory distress syndrome. Yet, hyperoxia treatment increases free reactive oxygen species (ROS)-induced lung injury, which is reported to disrupt autophagy/mitophagy. Altered extranuclear activity of the catalytic subunit of telomerase, telomerase reverse transcriptase (TERT), plays a protective role in ROS injury and autophagy in the systemic and coronary endothelium. We investigated interactions between autophagy/mitophagy and TERT that contribute to mitochondrial dysfunction and pulmonary injury in cultured rat lung microvascular endothelial cells (RLMVECs) exposed in vitro, and rat lungs exposed in vivo to hyperoxia for 48 h. Hyperoxia-induced mitochondrial damage in rat lungs [TOMM20, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)], which was paralleled by increased markers of inflammation [myeloperoxidase (MPO), IL-1β, TLR9], impaired autophagy signaling (Beclin-1, LC3B-II/1, and p62), and decreased the expression of TERT. Mitochondrial-specific autophagy (mitophagy) was not altered, as hyperoxia increased expression of Pink1 but not Parkin. Hyperoxia-induced mitochondrial damage (TOMM20) was more pronounced in rats that lack the catalytic subunit of TERT and resulted in a reduction in cellular proliferation rather than cell death in RLMVECs. Activation of TERT or autophagy individually offset mitochondrial damage (MTT). Combined activation/inhibition failed to alleviate hyperoxic-induced mitochondrial damage in vitro, whereas activation of autophagy in vivo decreased mitochondrial damage (MTT) in both wild type (WT) and rats lacking TERT. Functionally, activation of either TERT or autophagy preserved transendothelial membrane resistance. Altogether, these observations show that activation of autophagy/mitophagy and/or TERT mitigate loss of mitochondrial function and barrier integrity in hyperoxia.NEW & NOTEWORTHY In cultured pulmonary artery endothelial cells and in lungs exposed in vivo to hyperoxia, autophagy is activated, but clearance of autophagosomes is impaired in a manner that suggests cross talk between TERT and autophagy. Stimulation of autophagy prevents hyperoxia-induced decreases in mitochondrial metabolism and sustains monolayer resistance. Hyperoxia increases mitochondrial outer membrane (TOMM20) protein, decreases mitochondrial function, and reduces cellular proliferation without increasing cell death.
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Affiliation(s)
- Andreas M Beyer
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Laura E Norwood Toro
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - William E Hughes
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Micaela Young
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Anne V Clough
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Research Service, Zablocki Veterans Affairs Medical Center, Milwaukee Wisconsin
- Department of Mathematics, Statistics and Computer Science, Marquette University, Milwaukee, Wisconsin
| | - Feng Gao
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Meetha Medhora
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
- Research Service, Zablocki Veterans Affairs Medical Center, Milwaukee Wisconsin
| | - Said H Audi
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Research Service, Zablocki Veterans Affairs Medical Center, Milwaukee Wisconsin
- Department of Biomedical Engineering, Marquette University, Milwaukee, Wisconsin
| | - Elizabeth R Jacobs
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
- Research Service, Zablocki Veterans Affairs Medical Center, Milwaukee Wisconsin
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13
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Aboulgheit A, Karbasiafshar C, Zhang Z, Sabra M, Shi G, Tucker A, Sodha N, Abid MR, Sellke FW. Lactobacillus plantarum probiotic induces Nrf2-mediated antioxidant signaling and eNOS expression resulting in improvement of myocardial diastolic function. Am J Physiol Heart Circ Physiol 2021; 321:H839-H849. [PMID: 34506225 PMCID: PMC8616611 DOI: 10.1152/ajpheart.00278.2021] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/26/2021] [Accepted: 08/26/2021] [Indexed: 11/22/2022]
Abstract
Yorkshire swine were fed standard diet (n = 7) or standard diet containing applesauce rich in caffeic acid with Lactobacillus plantarum (n = 7) for 3 wk. An ameroid constrictor was next placed around the left coronary circumflex artery, and the dietary regimens were continued. At 14 wk, cardiac function, myocardial perfusion, vascular density, and molecular signaling in ischemic myocardium were evaluated. The L. plantarum-applesauce augmented NF-E2-related factor 2 (Nrf2) in the ischemic myocardium and induced Nrf2-regulated antioxidant enzymes heme oxygenase-1 (HO-1), NADPH dehydrogenase quinone 1 (NQO-1), and thioredoxin reductase (TRXR-1). Improved left ventricular diastolic function and decreased myocardial collagen expression were seen in animals receiving the L. plantarum-applesauce supplements. The expression of endothelial nitric oxide synthase (eNOS) was increased in ischemic myocardial tissue of the treatment group, whereas levels of asymmetric dimethyl arginine (ADMA), hypoxia inducible factor 1α (HIF-1α), and phosphorylated MAPK (pMAPK) were decreased. Collateral-dependent myocardial perfusion was unaffected, whereas arteriolar and capillary densities were reduced as determined by α-smooth muscle cell actin and CD31 immunofluorescence in ischemic myocardial tissue. Dietary supplementation with L. plantarum-applesauce is a safe and effective method of enhancing Nrf2-mediated antioxidant signaling cascade in ischemic myocardium. Although this experimental diet was associated with a reduction in hypoxic stimuli, decreased vascular density, and without any change in collateral-dependent perfusion, the net effect of an increase in antioxidant activity and eNOS expression resulted in improvement in diastolic function.NEW & NOTEWORTHY Colonization of the gut microbiome with certain strains of L. Plantarum has been shown to convert caffeic acid readily available in applesauce to 4-vinyl-catechol, a potent activator of the Nrf2 antioxidant defense pathway. In this exciting study, we show that simple dietary supplementation with L. Plantarum-applesauce-mediated Nrf2 activation supports vascular function, ameliorates myocardial ischemic diastolic dysfunction, and upregulates expression of eNOS.
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Affiliation(s)
- Ahmed Aboulgheit
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Catherine Karbasiafshar
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Zhiqi Zhang
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Mohamed Sabra
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Guangbin Shi
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Aja Tucker
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Neel Sodha
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - M Ruhul Abid
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
| | - Frank W Sellke
- Division of Cardiothoracic Surgery, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island
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Zhao X, Li S, Mo Y, Li R, Huang S, Zhang A, Ni X, Dai Q, Wang J. DCA Protects against Oxidation Injury Attributed to Cerebral Ischemia-Reperfusion by Regulating Glycolysis through PDK2-PDH-Nrf2 Axis. Oxid Med Cell Longev 2021; 2021:5173035. [PMID: 34712383 PMCID: PMC8548159 DOI: 10.1155/2021/5173035] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/06/2021] [Accepted: 10/04/2021] [Indexed: 12/19/2022]
Abstract
Cerebral ischemic stroke (IS) is still a difficult problem to be solved; energy metabolism failure is one of the main factors causing mitochondrion dysfunction and oxidation stress damage within the pathogenesis of cerebral ischemia, which produces considerable reactive oxygen species (ROS) and opens the blood-brain barrier. Dichloroacetic acid (DCA) can inhibit pyruvate dehydrogenase kinase (PDK). Moreover, DCA has been indicated with the capability of increasing mitochondrial pyruvate uptake and promoting oxidation of glucose in the course of glycolysis, thereby improving the activity of pyruvate dehydrogenase (PDH). As a result, pyruvate flow is promoted into the tricarboxylic acid cycle to expedite ATP production. DCA has a protective effect on IS and brain ischemia/reperfusion (I/R) injury, but the specific mechanism remains unclear. This study adopted a transient middle cerebral artery occlusion (MCAO) mouse model for simulating IS and I/R injury in mice. We investigated the mechanism by which DCA regulates glycolysis and protects the oxidative damage induced by I/R injury through the PDK2-PDH-Nrf2 axis. As indicated from the results of this study, DCA may improve glycolysis, reduce oxidative stress and neuronal death, damage the blood-brain barrier, and promote the recovery of oxidative metabolism through inhibiting PDK2 and activating PDH. Additionally, DCA noticeably elevated the neurological score and reduced the infarct volume, brain water content, and necrotic neurons. Moreover, as suggested from the results, DCA elevated the content of Nrf2 as well as HO-1, i.e., the downstream antioxidant proteins pertaining to Nrf2, while decreasing the damage of BBB and the degradation of tight junction proteins. To simulate the condition of hypoxia and ischemia in vitro, HBMEC cells received exposure to transient oxygen and glucose deprivation (OGD). The DCA treatment is capable of reducing the oxidative stress and blood-brain barrier of HBMEC cells after in vitro hypoxia and reperfusion (H/R). Furthermore, this study evidenced that HBMEC cells could exhibit higher susceptibility to H/R-induced oxidative stress after ML385 application, the specific inhibitor of Nrf2. Besides, the protection mediated by DCA disappeared after ML385 application. To sum up, as revealed from the mentioned results, DCA could exert the neuroprotective effect on oxidative stress and blood-brain barrier after brain I/R injury via PDK2-PDH-Nrf2 pathway activation. Accordingly, the PDK2-PDH-Nrf2 pathway may play a key role and provide a new pharmacology target in cerebral IS and I/R protection by DCA.
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Affiliation(s)
- Xiaoyong Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang 261021, China
| | - Shan Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Yunchang Mo
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Ruru Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Shaoyi Huang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Anqi Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Xuqing Ni
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Qinxue Dai
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Junlu Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
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Jiang T, Liu T, Deng X, Ding W, Yue Z, Yang W, Lv X, Li W. Adiponectin ameliorates lung ischemia-reperfusion injury through SIRT1-PINK1 signaling-mediated mitophagy in type 2 diabetic rats. Respir Res 2021; 22:258. [PMID: 34602075 PMCID: PMC8489101 DOI: 10.1186/s12931-021-01855-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/29/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Diabetes mellitus (DM) is a key contributing factor to poor survival in lung transplantation recipients. Mitochondrial dysfunction is recognized as a critical mediator in the pathogenesis of diabetic lung ischemia-reperfusion (IR) injury. The protective effects of adiponectin have been demonstrated in our previous study, but the underlying mechanism remains unclear. Here we demonstrated an important role of mitophagy in the protective effect of adiponectin during diabetic lung IR injury. METHODS High-fat diet-fed streptozotocin-induced type 2 diabetic rats were exposed to adiponectin with or without administration of the SIRT1 inhibitor EX527 following lung transplantation. To determine the mechanisms underlying the action of adiponectin, rat pulmonary microvascular endothelial cells were transfected with SIRT1 small-interfering RNA or PINK1 small-interfering RNA and then subjected to in vitro diabetic lung IR injury. RESULTS Mitophagy was impaired in diabetic lungs subjected to IR injury, which was accompanied by increased oxidative stress, inflammation, apoptosis, and mitochondrial dysfunction. Adiponectin induced mitophagy and attenuated subsequent diabetic lung IR injury by improving lung functional recovery, suppressing oxidative damage, diminishing inflammation, decreasing cell apoptosis, and preserving mitochondrial function. However, either administration of 3-methyladenine (3-MA), an autophagy antagonist or knockdown of PINK1 reduced the protective action of adiponectin. Furthermore, we demonstrated that APN affected PINK1 stabilization via the SIRT1 signaling pathway, and knockdown of SIRT1 suppressed PINK1 expression and compromised the protective effect of adiponectin. CONCLUSION These data demonstrated that adiponectin attenuated reperfusion-induced oxidative stress, inflammation, apoptosis and mitochondrial dysfunction via activation of SIRT1- PINK1 signaling-mediated mitophagy in diabetic lung IR injury.
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Affiliation(s)
- Tao Jiang
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Tianhua Liu
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Xijin Deng
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Wengang Ding
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Ziyong Yue
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Wanchao Yang
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Xiangqi Lv
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China
| | - Wenzhi Li
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research On Anesthesiology and Critical Care Medicine), The Second Affiliated Hospital, Harbin Medical University, No.194, XueFu Road, NanGang District, Harbin, China.
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Schneckmann R, Suvorava T, Hundhausen C, Schuler D, Lorenz C, Freudenberger T, Kelm M, Fischer JW, Flögel U, Grandoch M. Endothelial Hyaluronan Synthase 3 Augments Postischemic Arteriogenesis Through CD44/eNOS Signaling. Arterioscler Thromb Vasc Biol 2021; 41:2551-2562. [PMID: 34380333 DOI: 10.1161/atvbaha.121.315478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Objective: The dominant driver of arteriogenesis is elevated shear stress sensed by the endothelial glycocalyx thereby promoting arterial outward remodeling. Hyaluronan, a critical component of the endothelial glycocalyx, is synthesized by 3 HAS isoenzymes (hyaluronan synthases 1-3) at the plasma membrane. Considering further the importance of HAS3 for smooth muscle cell and immune cell functions we aimed to evaluate its role in collateral artery growth. Approach and Results: Male Has3-deficient (Has3-KO) mice were subjected to hindlimb ischemia. Blood perfusion was monitored by laser Doppler perfusion imaging and endothelial function was assessed by measurement of flow-mediated dilation in vivo. Collateral remodeling was monitored by high resolution magnetic resonance angiography. A neutralizing antibody against CD44 (clone KM201) was injected intraperitoneally to analyze hyaluronan signaling in vivo. After hindlimb ischemia, Has3-KO mice showed a reduced arteriogenic response with decreased collateral remodeling and impaired perfusion recovery. While postischemic leukocyte infiltration was unaffected, a diminished flow-mediated dilation pointed towards an impaired endothelial cell function. Indeed, endothelial AKT (protein kinase B)-dependent eNOS (endothelial nitric oxide synthase) phosphorylation at Ser1177 was substantially reduced in Has3-KO thigh muscles. Endothelial-specific Has3-KO mice mimicked the hindlimb ischemia-induced phenotype of impaired perfusion recovery as observed in global Has3-deficiency. Mechanistically, blocking selectively the hyaluronan binding site of CD44 reduced flow-mediated dilation, thereby suggesting hyaluronan signaling through CD44 as the underlying signaling pathway. Conclusions: In summary, HAS3 contributes to arteriogenesis in hindlimb ischemia by hyaluronan/CD44-mediated stimulation of eNOS phosphorylation at Ser1177. Thus, strategies augmenting endothelial HAS3 or CD44 could be envisioned to enhance vascularization under pathological conditions.
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Affiliation(s)
- Rebekka Schneckmann
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Tatsiana Suvorava
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Christian Hundhausen
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Dominik Schuler
- Clinic for Cardiology, Pneumology and Angiology (D.S., M.K.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Christin Lorenz
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Till Freudenberger
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Malte Kelm
- Clinic for Cardiology, Pneumology and Angiology (D.S., M.K.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
- CARID, Cardiovascular Research Institute Düsseldorf, University Hospital Düsseldorf, Heinrich-Heine-University, Germany (M.K., J.W.F.)
| | - Jens W Fischer
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
- CARID, Cardiovascular Research Institute Düsseldorf, University Hospital Düsseldorf, Heinrich-Heine-University, Germany (M.K., J.W.F.)
| | - Ulrich Flögel
- Experimental Cardiovascular Imaging, Institute for Molecular Cardiology (U.F.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
| | - Maria Grandoch
- Institute for Pharmacology and Clinical Pharmacology, Medical Faculty (R.S., T.S., C.H., C.L., T.F., J.W.F., M.G.), University Clinics and Heinrich-Heine University Düsseldorf, Germany
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17
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Tu YA, Chou CH, Yang PK, Shun CT, Wen WF, Tsao PN, Chen SU, Yang JH. Intentional endometrial injury enhances angiogenesis through increased production and activation of MMP-9 by TNF-α and MMP-3 in a mouse model. Mol Hum Reprod 2021; 27:gaab055. [PMID: 34463765 DOI: 10.1093/molehr/gaab055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 08/08/2021] [Indexed: 11/12/2022] Open
Abstract
There have been reports of improved pregnancy rates after performing intentional endometrial injuries, also known as endometrial scratching, in patients with recurrent implantation failure. In our previous study on intentional endometrial injury, we found an increased expression of matrix metalloproteinase (MMP)-3 following induced injuries to the mice endometrium. In the current study, we further examine whether the rise in MMP-3 could contribute to increased angiogenesis. Female C57B1/6 mice were obtained at 12 weeks of age, and intentional endometrial injuries were induced mechanically in the left uterine horns. Using the appropriate media, uterine-washes were performed on the injured and uninjured (control) horns of the harvested uteri. The uterine tissues were further processed for tissue lysates, histopathology and immunohistochemistry. The results show that intentional endometrial injuries caused an increase in secreted LPA in the injured horns, which were detected in the uterine-washes. In addition, LPA induced increased production of TNF-α in human endometrial epithelial cells (hEEpCs). Furthermore, TNF-α appeared to induce differential and cell-specific upregulation of the MMPs: MMP-3 was upregulated in the epithelial (hEEpCs), while MMP-9 was upregulated in the endothelial cells (human endometrial endothelial cells; hEEnCs). The upregulation of MMP-3 appeared to be necessary for the activation of MMP-9, whose active form stimulated the formation of vessel-like structure by the hEEnCs. The results of this study suggest that there may be enhanced angiogenesis following intentional endometrial injuries, which is mediated in part by TNF-α-induced and MMP-3-activated MMP-9 production.
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Affiliation(s)
- Yi-An Tu
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chia-Hung Chou
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Po-Kai Yang
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chia-Tung Shun
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- Department and Graduate Institute of Forensic Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Fen Wen
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Po-Nien Tsao
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shee-Uan Chen
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jehn-Hsiahn Yang
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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18
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Brown OI, Bridge KI, Kearney MT. Nicotinamide Adenine Dinucleotide Phosphate Oxidases in Glucose Homeostasis and Diabetes-Related Endothelial Cell Dysfunction. Cells 2021; 10:cells10092315. [PMID: 34571964 PMCID: PMC8469180 DOI: 10.3390/cells10092315] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 12/15/2022] Open
Abstract
Oxidative stress within the vascular endothelium, due to excess generation of reactive oxygen species (ROS), is thought to be fundamental to the initiation and progression of the cardiovascular complications of type 2 diabetes mellitus. The term ROS encompasses a variety of chemical species including superoxide anion (O2•-), hydroxyl radical (OH-) and hydrogen peroxide (H2O2). While constitutive generation of low concentrations of ROS are indispensable for normal cellular function, excess O2•- can result in irreversible tissue damage. Excess ROS generation is catalysed by xanthine oxidase, uncoupled nitric oxide synthases, the mitochondrial electron transport chain and the nicotinamide adenine dinucleotide phosphate (NADPH) oxidases. Amongst enzymatic sources of O2•- the Nox2 isoform of NADPH oxidase is thought to be critical to the oxidative stress found in type 2 diabetes mellitus. In contrast, the transcriptionally regulated Nox4 isoform, which generates H2O2, may fulfil a protective role and contribute to normal glucose homeostasis. This review describes the key roles of Nox2 and Nox4, as well as Nox1 and Nox5, in glucose homeostasis, endothelial function and oxidative stress, with a key focus on how they are regulated in health, and dysregulated in type 2 diabetes mellitus.
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19
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Liberale L, Akhmedov A, Vlachogiannis NI, Bonetti NR, Nageswaran V, Miranda MX, Puspitasari YM, Schwarz L, Costantino S, Paneni F, Beer JH, Ruschitzka F, Montecucco F, Lüscher TF, Stamatelopoulos K, Stellos K, Camici GG. Sirtuin 5 promotes arterial thrombosis by blunting the fibrinolytic system. Cardiovasc Res 2021; 117:2275-2288. [PMID: 32931562 DOI: 10.1093/cvr/cvaa268] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/07/2020] [Accepted: 09/03/2020] [Indexed: 12/17/2022] Open
Abstract
AIMS Arterial thrombosis as a result of plaque rupture or erosion is a key event in acute cardiovascular events. Sirtuin 5 (SIRT5) belongs to the lifespan-regulating sirtuin superfamily and has been implicated in acute ischaemic stroke and cardiac hypertrophy. This project aims at investigating the role of SIRT5 in arterial thrombus formation. METHODS AND RESULTS Sirt5 transgenic (Sirt5Tg/0) and knock-out (Sirt5-/-) mice underwent photochemically induced carotid endothelial injury to trigger arterial thrombosis. Primary human aortic endothelial cells (HAECs) were treated with SIRT5 silencing-RNA (si-SIRT5) as well as peripheral blood mononuclear cells from acute coronary syndrome (ACS) patients and non-ACS controls (case-control study, total n = 171) were used to increase the translational relevance of our data. Compared to wild-type controls, Sirt5Tg/0 mice displayed accelerated arterial thrombus formation following endothelial-specific damage. Conversely, in Sirt5-/- mice, arterial thrombosis was blunted. Platelet function was unaltered, as assessed by ex vivo collagen-induced aggregometry. Similarly, activation of the coagulation cascade as assessed by vascular and plasma tissue factor (TF) and TF pathway inhibitor expression was unaltered. Increased thrombus embolization episodes and circulating D-dimer levels suggested augmented activation of the fibrinolytic system in Sirt5-/- mice. Accordingly, Sirt5-/- mice showed reduced plasma and vascular expression of the fibrinolysis inhibitor plasminogen activator inhibitor (PAI)-1. In HAECs, SIRT5-silencing inhibited PAI-1 gene and protein expression in response to TNF-α. This effect was mediated by increased AMPK activation and reduced phosphorylation of the MAP kinase ERK 1/2, but not JNK and p38 as shown both in vivo and in vitro. Lastly, both PAI-1 and SIRT5 gene expressions are increased in ACS patients compared to non-ACS controls after adjustment for cardiovascular risk factors, while PAI-1 expression increased across tertiles of SIRT5. CONCLUSION SIRT5 promotes arterial thrombosis by modulating fibrinolysis through endothelial PAI-1 expression. Hence, SIRT5 may be an interesting therapeutic target in the context of atherothrombotic events.
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Affiliation(s)
- Luca Liberale
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
| | - Alexander Akhmedov
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - Nikolaos I Vlachogiannis
- Biosciences Institute, Vascular Biology and Medicine Theme, Faculty of Medical Sciences, Newcastle University, Framlington Place, NE2 4HH Newcastle upon Tyne, UK
| | - Nicole R Bonetti
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
- Department of Internal Medicine, Cantonal Hospital of Baden, Im Ergel 1, 5404 Baden, Switzerland
| | - Vanasa Nageswaran
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Melroy X Miranda
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - Yustina M Puspitasari
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - Lena Schwarz
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - Sarah Costantino
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - Francesco Paneni
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, Rämistrasse 100, 8092 Zurich, Switzerland
- Department of Research and Education, University Hospital Zurich, Rämistrasse 100, 8092 Zurich, Switzerland
| | - Jürg H Beer
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
- Department of Internal Medicine, Cantonal Hospital of Baden, Im Ergel 1, 5404 Baden, Switzerland
| | - Frank Ruschitzka
- Department of Cardiology, University Heart Center, University Hospital Zurich, Rämistrasse 100, 8092 Zurich, Switzerland
| | - Fabrizio Montecucco
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, L.go R. Benzi 10, 16132 Genoa, Italy
- First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
| | - Thomas F Lüscher
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
- Royal Brompton and Harefield Hospitals and Imperial College, Dovehouse Street, London SW3 6LY, UK
| | - Kimon Stamatelopoulos
- Biosciences Institute, Vascular Biology and Medicine Theme, Faculty of Medical Sciences, Newcastle University, Framlington Place, NE2 4HH Newcastle upon Tyne, UK
- Department of Clinical Therapeutics, Alexandra Hospital, University of Athens, Lourou 4-2, 115 28 Athens, Greece
| | - Konstantinos Stellos
- Biosciences Institute, Vascular Biology and Medicine Theme, Faculty of Medical Sciences, Newcastle University, Framlington Place, NE2 4HH Newcastle upon Tyne, UK
- Department of Cardiology, Newcastle Hospitals NHS Foundation Trust, Freeman Rd, High Heaton, Newcastle upon Tyne NE7 7DN, UK
| | - Giovanni G Camici
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, Rämistrasse 100, 8092 Zurich, Switzerland
- Department of Research and Education, University Hospital Zurich, Rämistrasse 100, 8092 Zurich, Switzerland
- Zurich Neuroscience Center, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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20
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Wang YC, Cai D, Cui XB, Chuang YH, Fay WP, Chen SY. Janus Kinase 3 Deficiency Promotes Vascular Reendothelialization-Brief Report. Arterioscler Thromb Vasc Biol 2021; 41:2019-2026. [PMID: 33910370 PMCID: PMC8159884 DOI: 10.1161/atvbaha.121.316293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Yung-Chun Wang
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212
| | - Dunpeng Cai
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212
- Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO 65212
| | - Xiao-Bing Cui
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212
| | - Ya-Hui Chuang
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212
| | - William P. Fay
- Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO 65212
- Medicine, University of Missouri School of Medicine, Columbia, MO 65212
- The Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO 65212
| | - Shi-You Chen
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212
- Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO 65212
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21
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Mazzeo C, Quan M, Wong H, Castiglione M, Kaushansky K, Zhan H. JAK2V617F mutant endothelial cells promote neoplastic hematopoiesis in a mixed vascular microenvironment. Blood Cells Mol Dis 2021; 90:102585. [PMID: 34139651 DOI: 10.1016/j.bcmd.2021.102585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 11/19/2022]
Abstract
The chronic myeloproliferative neoplasms (MPNs) are clonal stem cell disorders. The hematopoietic stem/progenitor cell (HSPC) compartment in patients with MPNs is heterogeneous with the presence of both wild-type and JAK2V617F mutant cells. Mechanisms responsible for mutant stem cell expansion in MPNs are not fully understood. Vascular endothelial cells (ECs) are an essential component of the hematopoietic microenvironment. ECs carrying the JAK2V617F mutation can be detected in patients with MPNs. Utilizing an ex vivo EC-HSPC co-culture system with mixed wild-type and JAK2V617F mutant ECs, we show that even small numbers of JAK2V617F mutant ECs can promote the expansion of JAK2V617F mutant HSPCs in preference to wild-type HSPCs during irradiation or cytotoxic chemotherapy, the two treatments commonly used in the conditioning regimen for stem cell transplantation, the only curative treatment for patients with MPNs. Mechanistically, we found that both cell-cell interactions and secreted factors are important for JAK2V617F mutant EC-mediated neoplastic hematopoiesis. Further understanding of how the JAK2V617F mutation alters vascular niche function will help identify new strategies to not only control neoplastic cell expansion but also prevent disease relapse in patients with MPNs.
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Affiliation(s)
| | - Moqing Quan
- Massachusetts General Hospital, Boston, MA, USA
| | - Helen Wong
- New York Institute of Technology College of Osteopathic Medicine, Glen Head, NY, USA
| | | | - Kenneth Kaushansky
- Office of the Sr. Vice President, Health Sciences, Stony Brook School of Medicine, Stony Brook, NY, USA
| | - Huichun Zhan
- Department of Medicine, Stony Brook School of Medicine, Stony Brook, NY, USA; Medical Service, Northport VA Medical Center, Northport, NY, USA.
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22
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Siragusa M, Oliveira Justo AF, Malacarne PF, Strano A, Buch A, Withers B, Peters KG, Fleming I. VE-PTP inhibition elicits eNOS phosphorylation to blunt endothelial dysfunction and hypertension in diabetes. Cardiovasc Res 2021; 117:1546-1556. [PMID: 32653904 DOI: 10.1093/cvr/cvaa213] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/18/2020] [Accepted: 07/06/2020] [Indexed: 12/11/2022] Open
Abstract
AIMS Receptor-type vascular endothelial protein tyrosine phosphatase (VE-PTP) dephosphorylates Tie-2 as well as CD31, VE-cadherin, and vascular endothelial growth factor receptor 2 (VEGFR2). The latter form a signal transduction complex that mediates the endothelial cell response to shear stress, including the activation of the endothelial nitric oxide (NO) synthase (eNOS). As VE-PTP expression is increased in diabetes, we investigated the consequences of VE-PTP inhibition (using AKB-9778) on blood pressure in diabetic patients and the role of VE-PTP in the regulation of eNOS activity and vascular reactivity. METHODS AND RESULTS In diabetic patients AKB-9778 significantly lowered systolic and diastolic blood pressure. This could be linked to elevated NO production, as AKB increased NO generation by cultured endothelial cells and elicited the NOS inhibitor-sensitive relaxation of endothelium-intact rings of mouse aorta. At the molecular level, VE-PTP inhibition increased the phosphorylation of eNOS on Tyr81 and Ser1177 (human sequence). The PIEZO1 activator Yoda1, which was used to mimic the response to shear stress, also increased eNOS Tyr81 phosphorylation, an effect that was enhanced by VE-PTP inhibition. Two kinases, i.e. abelson-tyrosine protein kinase (ABL)1 and Src were identified as eNOS Tyr81 kinases as their inhibition and down-regulation significantly reduced the basal and Yoda1-induced tyrosine phosphorylation and activity of eNOS. VE-PTP, on the other hand, formed a complex with eNOS in endothelial cells and directly dephosphorylated eNOS Tyr81 in vitro. Finally, phosphorylation of eNOS on Tyr80 (murine sequence) was found to be reduced in diabetic mice and diabetes-induced endothelial dysfunction (isolated aortic rings) was blunted by VE-PTP inhibition. CONCLUSIONS VE-PTP inhibition enhances eNOS activity to improve endothelial function and decrease blood pressure indirectly, through the activation of Tie-2 and the CD31/VE-cadherin/VEGFR2 complex, and directly by dephosphorylating eNOS Tyr81. VE-PTP inhibition, therefore, represents an attractive novel therapeutic option for diabetes-induced endothelial dysfunction and hypertension.
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MESH Headings
- Aniline Compounds/therapeutic use
- Animals
- Antihypertensive Agents/therapeutic use
- Blood Pressure/drug effects
- Cells, Cultured
- Diabetes Mellitus/drug therapy
- Diabetes Mellitus/enzymology
- Diabetes Mellitus/genetics
- Diabetes Mellitus/physiopathology
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/enzymology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/enzymology
- Endothelium, Vascular/physiopathology
- Enzyme Inhibitors/therapeutic use
- Humans
- Hypertension/drug therapy
- Hypertension/enzymology
- Hypertension/genetics
- Hypertension/physiopathology
- Mice, Inbred C57BL
- Mice, Transgenic
- Nitric Oxide/metabolism
- Nitric Oxide Synthase Type III/genetics
- Nitric Oxide Synthase Type III/metabolism
- Phosphorylation
- Receptor-Like Protein Tyrosine Phosphatases, Class 3/antagonists & inhibitors
- Receptor-Like Protein Tyrosine Phosphatases, Class 3/genetics
- Receptor-Like Protein Tyrosine Phosphatases, Class 3/metabolism
- Signal Transduction
- Sulfonic Acids/therapeutic use
- Treatment Outcome
- United States
- Mice
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Affiliation(s)
- Mauro Siragusa
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
- German Center for Cardiovascular Research (DZHK), Partner site RheinMain, Frankfurt am Main, Germany
| | - Alberto Fernando Oliveira Justo
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | | | - Anna Strano
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
| | - Akshay Buch
- Aerpio Pharmaceuticals, Inc., Cincinnati, OH, USA
| | | | | | - Ingrid Fleming
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany
- German Center for Cardiovascular Research (DZHK), Partner site RheinMain, Frankfurt am Main, Germany
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23
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Kuo CH, Huang YH, Chen PK, Lee GH, Tang MJ, Conway EM, Shi GY, Wu HL. VEGF-Induced Endothelial Podosomes via ROCK2-Dependent Thrombomodulin Expression Initiate Sprouting Angiogenesis. Arterioscler Thromb Vasc Biol 2021; 41:1657-1671. [PMID: 33730876 DOI: 10.1161/atvbaha.121.315931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Cheng-Hsiang Kuo
- Department of Biochemistry and Molecular Biology, National Cheng Kung University, Tainan, Taiwan (C.-H.K., P.-K.C., G.-Y.S.,
H.-L.W.)
- College of Medicine and International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan (C.-H.K., G.-H.L., M.-J.T., H.-L.W.)
| | - Yi-Hsun Huang
- Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan (Y.-H.H.)
- Department of Ophthalmology, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan (Y.-H.H.)
| | - Po-Ku Chen
- Department of Biochemistry and Molecular Biology, National Cheng Kung University, Tainan, Taiwan (C.-H.K., P.-K.C., G.-Y.S.,
H.-L.W.)
- Now with Translational Medicine Laboratory, Rheumatology and Immunology Center, China Medical University Hospital, Taichung, Taiwan (P.-K. C.)
| | - Gang-Hui Lee
- College of Medicine and International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan (C.-H.K., G.-H.L., M.-J.T., H.-L.W.)
| | - Ming-Jer Tang
- College of Medicine and International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan (C.-H.K., G.-H.L., M.-J.T., H.-L.W.)
| | - Edward M Conway
- Department of Medicine, Centre for Blood Research, Life Sciences Institute, University of British Columbia, Vancouver, Canada (E.M.C.)
| | - Guey-Yueh Shi
- Department of Biochemistry and Molecular Biology, National Cheng Kung University, Tainan, Taiwan (C.-H.K., P.-K.C., G.-Y.S.,
H.-L.W.)
| | - Hua-Lin Wu
- Department of Biochemistry and Molecular Biology, National Cheng Kung University, Tainan, Taiwan (C.-H.K., P.-K.C., G.-Y.S.,
H.-L.W.)
- College of Medicine and International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan (C.-H.K., G.-H.L., M.-J.T., H.-L.W.)
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24
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Croteau L, Mercier C, Fafard-Couture É, Nadeau A, Robillard S, Breton V, Guay A, Lizotte F, Despatis MA, Geraldes P. Endothelial deletion of PKCδ prevents VEGF inhibition and restores blood flow reperfusion in diabetic ischemic limb. Diab Vasc Dis Res 2021; 18:1479164121999033. [PMID: 33722087 PMCID: PMC8481738 DOI: 10.1177/1479164121999033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
AIMS Peripheral artery disease is a complication of diabetes leading to critical hindlimb ischemia. Diabetes-induced inhibition of VEGF actions is associated with the activation of protein kinase Cδ (PKCδ). We aim to specifically investigate the role of PKCδ in endothelial cell (EC) function and VEGF signaling. METHODS Nondiabetic and diabetic mice, with (ec-Prkcd-/-) or without (ec-Prkcdf/f) endothelial deletion of PKCδ, underwent femoral artery ligation. Blood flow reperfusion was assessed up to 4 weeks post-surgery. Capillary density, EC apoptosis and VEGF signaling were evaluated in the ischemic muscle. Src homology region 2 domain-containing phosphatase-1 (SHP-1) phosphatase activity was assessed in vitro using primary ECs. RESULTS Ischemic muscle of diabetic ec-Prkcdf/f mice exhibited reduced blood flow reperfusion and capillary density while apoptosis increased as compared to nondiabetic ec-Prkcdf/f mice. In contrast, blood flow reperfusion and capillary density were significantly improved in diabetic ec-Prkcd-/- mice. VEGF signaling pathway was restored in diabetic ec-Prkcd-/- mice. The deletion of PKCδ in ECs prevented diabetes-induced VEGF unresponsiveness through a reduction of SHP-1 phosphatase activity. CONCLUSIONS Our data provide new highlights in mechanisms by which PKCδ activation in EC contributed to poor collateral vessel formation, thus, offering novel therapeutic targets to improve angiogenesis in the diabetic limb.
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Affiliation(s)
- Laura Croteau
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Clément Mercier
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Étienne Fafard-Couture
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Alexandre Nadeau
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Stéphanie Robillard
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Valérie Breton
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Andréanne Guay
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Farah Lizotte
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Marc-Antoine Despatis
- Department of Surgery of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Pedro Geraldes
- Research Center of the Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
- Department of Medicine, Division of Endocrinology, Université de Sherbrooke, Sherbrooke, QC, Canada
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25
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Hu J, Zhao Y, Wu Y, Yang K, Hu K, Sun A, Ge J. Shexiang Baoxin Pill Attenuates Ischemic Injury by Promoting Angiogenesis by Activation of Aldehyde Dehydrogenase 2. J Cardiovasc Pharmacol 2021; 77:408-417. [PMID: 33662981 DOI: 10.1097/fjc.0000000000000967] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 11/12/2020] [Indexed: 11/25/2022]
Abstract
ABSTRACT Promoting angiogenesis is a critical treatment strategy for ischemic cardiovascular diseases. Shexiang Baoxin Pill (SBP), a traditional Chinese medicine, has been reported to be capable of relieving angina and improve heart function by promoting angiogenesis. The aim of this study was to determine the role of mitochondrial aldehyde dehydrogenase 2 (ALDH2) in SBP-induced angiogenesis. Left femoral artery ligation was performed in wild-type mice (WT) and ALDH2 knockout mice, which were administrated with SBP (20 mg/kg/d) or equal volume saline per day by gastric gavage for 2 weeks. Perfusion recovery, angiogenesis in chronic hind limb ischemia, was significantly improved in the WT + SBP group than in the WT group. However, these beneficial effects were absent in ALDH2 knockout mice. In vitro, hypoxia impaired the ability of proliferation, migration and tube formation, sprouting angiogenesis, and promoted apoptosis in cardiovascular microvascular endothelial cells, whereas the hypoxia damage was restored by SBP. The protective effect of SBP was remarkably weakened by ALDH2 knockdown. Furthermore, SBP suppressed hypoxia-induced ALDH2/protein kinase B (AKT)/mammalian target of rapamycin pathways. In conclusion, this study demonstrated that SBP protected lower limb from ischemia injury through the ALDH2-dependent pathway. The protective mechanism of SBP in cardiovascular microvascular endothelial cells was partly mediated through ALDH2/AKT/mammalian target of rapamycin pathways.
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Affiliation(s)
- Jingjing Hu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yongchao Zhao
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yonghui Wu
- Department of Cardiology, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Central Hospital, Lishui, Zhejiang, China ; and
| | - Kun Yang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Kai Hu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Aijun Sun
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
- Institute of Biomedical Science, Fudan University, Shanghai, China
| | - Junbo Ge
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
- Institute of Biomedical Science, Fudan University, Shanghai, China
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26
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Magro CM, Mulvey J, Kubiak J, Mikhail S, Suster D, Crowson AN, Laurence J, Nuovo G. Severe COVID-19: A multifaceted viral vasculopathy syndrome. Ann Diagn Pathol 2021; 50:151645. [PMID: 33248385 PMCID: PMC7553104 DOI: 10.1016/j.anndiagpath.2020.151645] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 10/09/2020] [Indexed: 01/08/2023]
Abstract
The objective of this study was to elucidate the pathophysiology that underlies severe COVID-19 by assessing the histopathology and the in situ detection of infectious SARS-CoV-2 and viral capsid proteins along with the cellular target(s) and host response from twelve autopsies. There were three key findings: 1) high copy infectious virus was limited mostly to the alveolar macrophages and endothelial cells of the septal capillaries; 2) viral spike protein without viral RNA localized to ACE2+ endothelial cells in microvessels that were most abundant in the subcutaneous fat and brain; 3) although both infectious virus and docked viral spike protein was associated with complement activation, only the endocytosed pseudovirions induced a marked up-regulation of the key COVID-19 associated proteins IL6, TNF alpha, IL1 beta, p38, IL8, and caspase 3. Importantly, this microvasculitis was associated with characteristic findings on hematoxylin and eosin examination that included endothelial degeneration and resultant basement membrane zone disruption and reduplication. It is concluded that serious COVID-19 infection has two distinct mechanisms: 1) a microangiopathy of pulmonary capillaries associated with a high infectious viral load where endothelial cell death releases pseudovirions into the circulation, and 2) the pseudovirions dock on ACE2+ endothelial cells most prevalent in the skin/subcutaneous fat and brain that activates the complement pathway/coagulation cascade resulting in a systemic procoagulant state as well as the expression of cytokines that produce the cytokine storm. The data predicts a favorable response to therapies based on either removal of circulating viral proteins and/or blunting of the endothelial-induced response.
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Affiliation(s)
- Cynthia M Magro
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, NY, NY, USA
| | - Justin Mulvey
- Department of Laboratory Medicine, Memorial Sloan-Kettering Cancer Center, NY, NY, USA
| | - Jeffrey Kubiak
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, NY, NY, USA
| | | | - David Suster
- Rutgers University Hospital Department of Pathology, Newark, NJ, USA
| | - A Neil Crowson
- Pathology Laboratory Associates, Oklahoma City, OK, USA; University of Oklahoma, Oklahoma City, OK, USA
| | - Jeffrey Laurence
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, NY, NY, USA
| | - Gerard Nuovo
- Discovery Life Sciences, Powell, OH, USA; Ohio State University Comprehensive Cancer Center and Discovery Life Sciences, Columbus, OH, USA.
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Li J, Chen Y, Gao J, Chen Y, Zhou C, Lin X, Liu C, Zhao M, Xu Y, Ji L, Jiang Z, Pan B, Zheng L. Eva1a ameliorates atherosclerosis by promoting re-endothelialization of injured arteries via Rac1/Cdc42/Arpc1b. Cardiovasc Res 2021; 117:450-461. [PMID: 31977009 DOI: 10.1093/cvr/cvaa011] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 11/23/2019] [Accepted: 01/17/2020] [Indexed: 02/03/2023] Open
Abstract
AIMS Eva-1 homologue 1 (Eva1a) is a novel protein involved in the regulation of cardiac remodelling and plaque stability, but little is known about its role in re-endothelialization and the development of atherosclerosis (AS). Thus, in the present study, we aimed to elucidate the function of Eva1a in re-endothelialization and AS. METHODS AND RESULTS Wire injuries of carotid and femoral arteries were established in Eva1a-/- mice. Eva1a-deficient mice were crossed with apolipoprotein E-/- (ApoE-/-) mice to evaluate AS development and re-endothelialization of carotid artery injuries. Denudation of the carotid artery at 3, 5, and 7 days was significantly aggravated in Eva1a-/- mice. The neointima of the femoral artery at 14 and 28 days was consequently exacerbated in Eva1a-/- mice. The area of atherosclerotic lesions was increased in Eva1a-/-ApoE-/- mice. To explore the underlying mechanisms, we performed transwell, scratch migration, cell counting kit-8, and bromodeoxyuridine assays using cultured human aorta endothelial cells (HAECs), which demonstrated that EVA1A promoted HAEC migration and proliferation. Proteomics revealed that the level of actin-related protein 2/3 complex subunit 1B (Arpc1b) was decreased, while Eva1a expression was absent. Arpc1b was found to be a downstream molecule of EVA1A by small interfering RNA transfection assay. Activation of Rac1 and Cdc42 GTPases was also regulated by EVA1A. CONCLUSION This study provides insights into anti-atherogenesis effects of Eva1a by promoting endothelium repair. Thus, Eva1a is a promising therapeutic target for AS.
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Affiliation(s)
- Jingxuan Li
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Yingyu Chen
- Department of Immunology, Peking University School of Basic Medical Science, Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, Xueyuan Road 38, Beijing 100191, China
| | - Jianing Gao
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Yue Chen
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Changping Zhou
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Xin Lin
- Department of Immunology, Peking University School of Basic Medical Science, Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, Xueyuan Road 38, Beijing 100191, China
| | - Changjie Liu
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Mingming Zhao
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
- China National Clinical Research Center for Neurological Diseases, Tiantan Hospital, Advanced Innovation Center for Human Brain Protection, The Capital Medical University, No.119 South Fourth Ring West Road, Beijing 100050, China
| | - Yangkai Xu
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Liang Ji
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
- China National Clinical Research Center for Neurological Diseases, Tiantan Hospital, Advanced Innovation Center for Human Brain Protection, The Capital Medical University, No.119 South Fourth Ring West Road, Beijing 100050, China
| | - Zongzhe Jiang
- Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Affiliated Hospital of Southwest Medical University, Taiping Road 25, Luzhou, Sichuan, China
| | - Bing Pan
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
| | - Lemin Zheng
- The Institute of Cardiovascular Sciences, Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Health Science Center, Xueyuan Road 38, Beijing 100191, China
- China National Clinical Research Center for Neurological Diseases, Tiantan Hospital, Advanced Innovation Center for Human Brain Protection, The Capital Medical University, No.119 South Fourth Ring West Road, Beijing 100050, China
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Kolijn D, Pabel S, Tian Y, Lódi M, Herwig M, Carrizzo A, Zhazykbayeva S, Kovács Á, Fülöp GÁ, Falcão-Pires I, Reusch PH, Linthout SV, Papp Z, van Heerebeek L, Vecchione C, Maier LS, Ciccarelli M, Tschöpe C, Mügge A, Bagi Z, Sossalla S, Hamdani N. Empagliflozin improves endothelial and cardiomyocyte function in human heart failure with preserved ejection fraction via reduced pro-inflammatory-oxidative pathways and protein kinase Gα oxidation. Cardiovasc Res 2021; 117:495-507. [PMID: 32396609 DOI: 10.1093/cvr/cvaa123] [Citation(s) in RCA: 150] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/10/2020] [Accepted: 05/06/2020] [Indexed: 01/09/2023] Open
Abstract
AIMS Sodium-glucose-cotransporter-2 inhibitors showed favourable cardiovascular outcomes, but the underlying mechanisms are still elusive. This study investigated the mechanisms of empagliflozin in human and murine heart failure with preserved ejection fraction (HFpEF). METHODS AND RESULTS The acute mechanisms of empagliflozin were investigated in human myocardium from patients with HFpEF and murine ZDF obese rats, which were treated in vivo. As shown with immunoblots and ELISA, empagliflozin significantly suppressed increased levels of ICAM-1, VCAM-1, TNF-α, and IL-6 in human and murine HFpEF myocardium and attenuated pathological oxidative parameters (H2O2, 3-nitrotyrosine, GSH, lipid peroxide) in both cardiomyocyte cytosol and mitochondria in addition to improved endothelial vasorelaxation. In HFpEF, we found higher oxidative stress-dependent activation of eNOS leading to PKGIα oxidation. Interestingly, immunofluorescence imaging and electron microscopy revealed that oxidized PKG1α in HFpEF appeared as dimers/polymers localized to the outer-membrane of the cardiomyocyte. Empagliflozin reduced oxidative stress/eNOS-dependent PKGIα oxidation and polymerization resulting in a higher fraction of PKGIα monomers, which translocated back to the cytosol. Consequently, diminished NO levels, sGC activity, cGMP concentration, and PKGIα activity in HFpEF increased upon empagliflozin leading to improved phosphorylation of myofilament proteins. In skinned HFpEF cardiomyocytes, empagliflozin improved cardiomyocyte stiffness in an anti-oxidative/PKGIα-dependent manner. Monovariate linear regression analysis confirmed the correlation of oxidative stress and PKGIα polymerization with increased cardiomyocyte stiffness and diastolic dysfunction of the HFpEF patients. CONCLUSION Empagliflozin reduces inflammatory and oxidative stress in HFpEF and thereby improves the NO-sGC-cGMP-cascade and PKGIα activity via reduced PKGIα oxidation and polymerization leading to less pathological cardiomyocyte stiffness.
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Affiliation(s)
- Detmar Kolijn
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany
| | - Steffen Pabel
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Yanna Tian
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Mária Lódi
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany
- Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Melissa Herwig
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany
| | - Albino Carrizzo
- Vascular Pathophysiology Unit - I.R.C.C.S. Neuromed, 86077, Pozzilli (IS), Italy
| | - Saltanat Zhazykbayeva
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany
| | - Árpád Kovács
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
| | - Gábor Á Fülöp
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
| | - Inês Falcão-Pires
- Department of Surgery and Physiology, University of Porto, Porto, Portugal
| | - Peter H Reusch
- Department of Clinical Pharmacology, Ruhr University Bochum, Bochum, Germany
| | - Sophie Van Linthout
- Berlin Institute of Health Center for Regenerative Therapies (BCRT), Charité, University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany
- Department of Cardiology and Pneumology, Charité, University Medicine Berlin, Campus Virchow Klinikum, Berlin, Germany
- German Center for Cardiovascular Research (DZHK), partner site, Berlin, Germany
| | - Zoltán Papp
- Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | | | - Carmine Vecchione
- Vascular Pathophysiology Unit - I.R.C.C.S. Neuromed, 86077, Pozzilli (IS), Italy
- Department of Medicine Surgery and Dentistry - University of Salerno, 84081, Baronissi (SA), Italy
| | - Lars S Maier
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
| | - Michele Ciccarelli
- Department of Medicine Surgery and Dentistry - University of Salerno, 84081, Baronissi (SA), Italy
| | - Carsten Tschöpe
- Berlin Institute of Health Center for Regenerative Therapies (BCRT), Charité, University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany
- Department of Cardiology and Pneumology, Charité, University Medicine Berlin, Campus Virchow Klinikum, Berlin, Germany
- German Center for Cardiovascular Research (DZHK), partner site, Berlin, Germany
| | - Andreas Mügge
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
| | - Zsolt Bagi
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Samuel Sossalla
- Department of Internal Medicine II, University Medical Center Regensburg, Regensburg, Germany
- Clinic for Cardiology & Pneumology, Georg-August University Goettingen
- DZHK (German Centre for Cardiovascular Research), partner site Goettingen, Germany
| | - Nazha Hamdani
- Department of Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany
- Department of Clinical Pharmacology, Ruhr University Bochum, Bochum, Germany
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Tian R, Jin Z, Zhou L, Zeng XP, Lu N. Quercetin Attenuated Myeloperoxidase-Dependent HOCl Generation and Endothelial Dysfunction in Diabetic Vasculature. J Agric Food Chem 2021; 69:404-413. [PMID: 33395297 DOI: 10.1021/acs.jafc.0c06335] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Myeloperoxidase (MPO)-dependent hypochlorous acid (HOCl) generation plays crucial roles in diabetic vascular complications. As a natural polyphenol, quercetin has antioxidant properties in various diabetic models. Herein, we investigated the therapeutic mechanism for quercetin on MPO-mediated HOCl generation and endothelial dysfunction in diabetic vasculature. In vitro, the presence of MPO could amplify high glucose-induced endothelial dysfunction which was significantly inhibited by the NADPH oxidase inhibitor, HOCl or H2O2 scavengers, revealing the contribution of MPO/H2O2/HOCl to vascular endothelial injury. Furthermore, quercetin effectively inhibited MPO/high glucose-mediated HOCl generation and cytotoxicity to vascular endothelial cells. The inhibitive effect on MPO activity was related to the fact that quercetin reduced high glucose-induced H2O2 generation in endothelial cells and directly acted as a competitive substrate for MPO, thus limiting MPO/H2O2-dependent HOCl production. Moreover, quercetin could attenuate HOCl-caused endothelial dysfunction in endothelial cells and isolated aortas. In vivo, dietary quercetin significantly inhibited aortic endothelial dysfunction in diabetic mice, while this compound simultaneously suppressed vascular MPO expression and activity. Therefore, it was demonstrated herein that quercetin inhibited endothelial injury in diabetic vasculature via suppression of MPO/high glucose-dependent HOCl formation.
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Affiliation(s)
- Rong Tian
- MOE Key Laboratory of Functional Small Organic Molecule, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Zeran Jin
- MOE Key Laboratory of Functional Small Organic Molecule, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Lan Zhou
- MOE Key Laboratory of Functional Small Organic Molecule, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Xing-Ping Zeng
- MOE Key Laboratory of Functional Small Organic Molecule, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Naihao Lu
- MOE Key Laboratory of Functional Small Organic Molecule, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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Roy B, Palaniyandi SS. A role for aldehyde dehydrogenase (ALDH) 2 in angiotensin II-mediated decrease in angiogenesis of coronary endothelial cells. Microvasc Res 2021; 135:104133. [PMID: 33428883 DOI: 10.1016/j.mvr.2021.104133] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 01/06/2021] [Accepted: 01/06/2021] [Indexed: 11/17/2022]
Abstract
Diabetes-induced coronary endothelial cell (CEC) dysfunction contributes to diabetic heart diseases. Angiotensin II (Ang II), a vasoactive hormone, is upregulated in diabetes, and is reported to increase oxidative stress in CECs. 4-hydroxy-2-nonenal (4HNE), a key lipid peroxidation product, causes cellular dysfunction by forming adducts with proteins. By detoxifying 4HNE, aldehyde dehydrogenase (ALDH) 2 reduces 4HNE mediated proteotoxicity and confers cytoprotection. Thus, we hypothesize that ALDH2 improves Ang II-mediated defective CEC angiogenesis by decreasing 4HNE-mediated cytotoxicity. To test our hypothesis, we treated the cultured mouse CECs (MCECs) with Ang II (0.1, 1 and 10 μM) for 2, 4 and 6 h. Next, we treated MCECs with Alda-1 (10 μM), an ALDH2 activator or disulfiram (2.5 μM)/ALDH2 siRNA (1.25 nM), the ALDH2 inhibitors, or blockers of angiotensin II type-1 and 2 receptors i.e. Losartan and PD0123319 respectively before challenging MCECs with 10 μM Ang II. We found that 10 μM Ang II decreased tube formation in MCECs with in vitro angiogenesis assay (P < .0005 vs control). 10 μM Ang II downregulated the levels of vascular endothelial growth factor receptor 1 (VEGFR1) (p < .005 for mRNA and P < .05 for protein) and VEGFR2 (p < .05 for mRNA and P < .005 for protein) as well as upregulated the levels of angiotensin II type-2 receptor (AT2R) (p < .05 for mRNA and P < .005 for protein) and 4HNE-adducts (P < .05 for protein) in cultured MCECs, compared to controls. ALDH2 inhibition with disulfiram/ALDH2 siRNA exacerbated 10 μM Ang II-induced decrease in coronary angiogenesis (P < .005) by decreasing the levels of VEGFR1 (P < .005 for mRNA and P < .05 for protein) and VEGFR2 (P < .05 for both mRNA and protein) and increasing the levels of AT2R (P < .05 for both mRNA and protein) and 4HNE-adducts (P < .05 for protein) relative to Ang II alone. AT2R inhibition per se improved angiogenesis in MCECs. Additionally, enhancing ALDH2 activity with Alda 1 rescued Ang II-induced decrease in angiogenesis by increasing the levels of VEGFR1, VEGFR2 and decreasing the levels of AT2R. In summary, ALDH2 can be an important target in reducing 4HNE-induced proteotoxicity and improving angiogenesis in MCECs. Finally, we conclude ALDH2 activation can be a therapeutic strategy to improve coronary angiogenesis to ameliorate cardiometabolic diseases.
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Affiliation(s)
- Bipradas Roy
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI 48202, United States of America; Department of Physiology, Wayne State University, Detroit, MI 48202, United States of America
| | - Suresh Selvaraj Palaniyandi
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI 48202, United States of America; Department of Physiology, Wayne State University, Detroit, MI 48202, United States of America.
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He A, Zuo D, Liang X, Guo Y, Suxin L, Xia Y. Hypoglycemia increases endothelial-dependent vasodilation through suppressing phosphorylation at Threonine 495/497 site of endothelial nitric oxide synthase. Microvasc Res 2021; 133:104075. [PMID: 32950484 DOI: 10.1016/j.mvr.2020.104075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/06/2020] [Accepted: 09/14/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Phosphorylation plays an essential role in the regulation of endothelial nitric oxide synthase (eNOS) activity. However, the phosphorylation of eNOS under hypoglycemia and whether hypoglycemia changes eNOS activity is unknown. This paper aims to clarify the regulation of eNOS phosphorylation and its activity change under hypoglycemia. METHODS Bovine aortic endothelial cells (BAECs) and Sprague-Dawley rats were treated with hypoglycemia, and the phosphorylation of eNOS was subjected to western blot. Blood nitric oxide (NO) concentration was determined by NO kit and endothelial-dependent vasodilation was detected by multi-wire myograph. RESULTS In both BAECs and rats' thoracic aorta, hypoglycemia induced eNOS phosphorylation decrease specifically on Threonine (Thr) 497. Inhibition of ubiquitination of protein kinase C α subunit (PKCα) reverses the decrease of eNOS phosphorylation in hypoglycemia. Ubiquitinated PKCα can be reversed by AMPK knockdown. In rats, insulin induced hypoglycemia increased the concentration of NO in arterial blood, and progressively enhanced the endothelium-dependent vasodilation of the thoracic and mesenteric aorta. CONCLUSIONS In vitro, the activation of AMPK may lead to the expression of PKCα by regulating ubiquitination, resulting in a decrease in the level of P-eNOS Thr497 phosphorylation under hypoglycemia. In vivo, insulin-induced hypoglycemia produces a beneficial cardiovascular effect on rats.
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Affiliation(s)
- An He
- Division of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Deyu Zuo
- Division of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaoxue Liang
- Division of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yongzheng Guo
- Division of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Luo Suxin
- Division of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Yong Xia
- Division of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; Institute of Life Science, Chongqing Medical University, Chongqing 400016, China.
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Eichin D, Pessia A, Takeda A, Laakkonen J, Bellmann L, Kankainen M, Imhof BA, Stoitzner P, Tang J, Salmi M, Jalkanen S. CD73 contributes to anti-inflammatory properties of afferent lymphatic endothelial cells in humans and mice. Eur J Immunol 2021; 51:231-246. [PMID: 32970335 PMCID: PMC7821194 DOI: 10.1002/eji.201948432] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 07/23/2020] [Accepted: 09/22/2020] [Indexed: 02/05/2023]
Abstract
CD73 is an important ectoenzyme responsible for the production of extracellular adenosine. It is involved in regulating inflammatory responses and cell migration and is overexpressed in various cancers. The functions of CD73 in blood endothelial cells are understood in detail, but its role on afferent lymphatics remains unknown. Moreover, anti-CD73 antibodies are now used in multiple clinical cancer trials, but their effects on different endothelial cell types have not been studied. This study reveals that a previously unknown role of CD73 on afferent lymphatics is to dampen immune responses. Knocking it out or suppressing it by siRNA leads to the upregulation of inflammation-associated genes on lymphatic endothelial cells and a more pro-inflammatory phenotype of interacting dendritic cells in vitro and in vivo. In striking contrast, anti-CD73 antibodies had only negligible effects on the gene expression of lymphatic- and blood-endothelial cells. Our data thus reveal new functions of lymphatic CD73 and indicate a low likelihood of endothelial cell-related adverse effects by CD73 targeting therapeutic antibodies.
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Affiliation(s)
- Dominik Eichin
- MediCity Research LaboratoryUniversity of TurkuTurkuFinland
| | - Alberto Pessia
- Research Program in Systems OncologyFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
| | - Akira Takeda
- MediCity Research LaboratoryUniversity of TurkuTurkuFinland
| | - Joni Laakkonen
- MediCity Research LaboratoryUniversity of TurkuTurkuFinland
| | - Lydia Bellmann
- Department of Dermatology, Venereology & AllergologyMedical University of InnsbruckInnsbruckAustria
| | - Matti Kankainen
- Medical and Clinical GeneticsUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
- Hematology Research Unit HelsinkiUniversity of HelsinkiHelsinkiFinland
- Translational Immunology ProgramUniversity of HelsinkiHelsinkiFinland
| | - Beat A. Imhof
- MediCity Research LaboratoryUniversity of TurkuTurkuFinland
- Department of Pathology and Immunology, Centre Médical Universitaire (CMU), Medical FacultyUniversity of GenevaGenevaSwitzerland
| | - Patrizia Stoitzner
- Department of Dermatology, Venereology & AllergologyMedical University of InnsbruckInnsbruckAustria
| | - Jing Tang
- Research Program in Systems OncologyFaculty of MedicineUniversity of HelsinkiHelsinkiFinland
| | - Marko Salmi
- MediCity Research LaboratoryUniversity of TurkuTurkuFinland
- Institute of BiomedicineUniversity of TurkuTurkuFinland
| | - Sirpa Jalkanen
- MediCity Research LaboratoryUniversity of TurkuTurkuFinland
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Baier J, Gänsbauer M, Giessler C, Arnold H, Muske M, Schleicher U, Lukassen S, Ekici A, Rauh M, Daniel C, Hartmann A, Schmid B, Tripal P, Dettmer K, Oefner PJ, Atreya R, Wirtz S, Bogdan C, Mattner J. Arginase impedes the resolution of colitis by altering the microbiome and metabolome. J Clin Invest 2020; 130:5703-5720. [PMID: 32721946 PMCID: PMC7598089 DOI: 10.1172/jci126923] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/16/2020] [Indexed: 02/06/2023] Open
Abstract
Arginase 1 (Arg1), which converts l-arginine into ornithine and urea, exerts pleiotropic immunoregulatory effects. However, the function of Arg1 in inflammatory bowel disease (IBD) remains poorly characterized. Here, we found that Arg1 expression correlated with the degree of inflammation in intestinal tissues from IBD patients. In mice, Arg1 was upregulated in an IL-4/IL-13- and intestinal microbiota-dependent manner. Tie2-Cre Arg1fl/fl mice lacking Arg1 in hematopoietic and endothelial cells recovered faster from colitis than Arg1-expressing (Arg1fl/fl) littermates. This correlated with decreased vessel density, compositional changes in intestinal microbiota, diminished infiltration by myeloid cells, and an accumulation of intraluminal polyamines that promote epithelial healing. The proresolving effect of Arg1 deletion was reduced by an l-arginine-free diet, but rescued by simultaneous deletion of other l-arginine-metabolizing enzymes, such as Arg2 or Nos2, demonstrating that protection from colitis requires l-arginine. Fecal microbiota transfers from Tie2-Cre Arg1fl/fl mice into WT recipients ameliorated intestinal inflammation, while transfers from WT littermates into Arg1-deficient mice prevented an advanced recovery from colitis. Thus, an increased availability of l-arginine as well as altered intestinal microbiota and metabolic products accounts for the accelerated resolution from colitis in the absence of Arg1. Consequently, l-arginine metabolism may serve as a target for clinical intervention in IBD patients.
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Affiliation(s)
- Julia Baier
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
| | | | - Claudia Giessler
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
| | - Harald Arnold
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
| | - Mercedes Muske
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
| | - Ulrike Schleicher
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
| | | | | | | | | | - Arndt Hartmann
- Pathologisches Institut, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Benjamin Schmid
- Optical Imaging Centre Erlangen (OICE), FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Philipp Tripal
- Optical Imaging Centre Erlangen (OICE), FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Katja Dettmer
- Institut für Funktionelle Genomik, Universität Regensburg, Regensburg, Germany
| | - Peter J. Oefner
- Institut für Funktionelle Genomik, Universität Regensburg, Regensburg, Germany
| | - Raja Atreya
- Medizinische Klinik 1–Gastroenterologie, Pneumologie and Endokrinologie, Universitätsklinikum Erlangen and FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Stefan Wirtz
- Medizinische Klinik 1–Gastroenterologie, Pneumologie and Endokrinologie, Universitätsklinikum Erlangen and FAU Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Christian Bogdan
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Jochen Mattner
- Mikrobiologisches Institut, Klinische Mikrobiologie, Immunologie und Hygiene
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
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Duez C, Gross B, Marquillies P, Ledroit V, Ryffel B, Glineur C. Regulation of IL (Interleukin)-33 Production in Endothelial Cells via Kinase Activation and Fas/CD95 Upregulation. Arterioscler Thromb Vasc Biol 2020; 40:2619-2631. [PMID: 32907372 DOI: 10.1161/atvbaha.120.314832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The occurrence of new blood vessel formation in the lungs of asthmatic patients suggests a critical role for airway endothelial cells (ECs) in the disease. IL-33 (Interleukin-33)-a cytokine abundantly expressed in human lung ECs-recently emerged as a key factor in the development of allergic diseases, including asthma. In the present study, we evaluated whether mouse and human ECs exposed to the common Dermatophagoides farinae allergen produce IL-33 and characterized the activated signaling pathways. Approach and Results: Mouse primary lung ECs were exposed in vitro to D farinae extract or rmIL-33 (recombinant murine IL-33). Both D farinae and rmIL-33 induced Il-33 transcription without increasing the IL-33 production and upregulated the expression of its receptor, as well as genes involved in angiogenesis and the regulation of immune responses. In particular, D farinae and rmIL-33 upregulated Fas/Cd95 transcript level, yet without promoting apoptosis. Inhibition of caspases involved in the Fas signaling pathway, increased IL-33 protein level in ECs, suggesting that Fas may decrease IL-33 level through caspase-8-dependent mechanisms. Our data also showed that the NF-κB (nuclear factor-κB), PI3K/Akt, and Wnt/β-catenin pathways regulate Il-33 transcription in both mouse and human primary ECs. CONCLUSIONS Herein, we described a new mechanism involved in the control of IL-33 production in lung ECs exposed to allergens.
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Affiliation(s)
- Catherine Duez
- CNRS UMR 9017, Inserm U1019, CIIL-Center for Infection and Immunity of Lille (C.D., P.M., V.L., C.G.), CHU Lille, Institut Pasteur de Lille, University Lille, France
| | - Barbara Gross
- Inserm U1011-EGID (B.G.), CHU Lille, Institut Pasteur de Lille, University Lille, France
| | - Philippe Marquillies
- CNRS UMR 9017, Inserm U1019, CIIL-Center for Infection and Immunity of Lille (C.D., P.M., V.L., C.G.), CHU Lille, Institut Pasteur de Lille, University Lille, France
| | - Valérie Ledroit
- CNRS UMR 9017, Inserm U1019, CIIL-Center for Infection and Immunity of Lille (C.D., P.M., V.L., C.G.), CHU Lille, Institut Pasteur de Lille, University Lille, France
| | - Bernhard Ryffel
- Laboratory of Molecular and Experimental Immunology and Neurogenetics, CNRS UMR 7355, University of Orleans, France (B.R.)
| | - Corine Glineur
- CNRS UMR 9017, Inserm U1019, CIIL-Center for Infection and Immunity of Lille (C.D., P.M., V.L., C.G.), CHU Lille, Institut Pasteur de Lille, University Lille, France
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Hauptmann J, Johann L, Marini F, Kitic M, Colombo E, Mufazalov IA, Krueger M, Karram K, Moos S, Wanke F, Kurschus FC, Klein M, Cardoso S, Strauß J, Bolisetty S, Lühder F, Schwaninger M, Binder H, Bechman I, Bopp T, Agarwal A, Soares MP, Regen T, Waisman A. Interleukin-1 promotes autoimmune neuroinflammation by suppressing endothelial heme oxygenase-1 at the blood-brain barrier. Acta Neuropathol 2020; 140:549-567. [PMID: 32651669 PMCID: PMC7498485 DOI: 10.1007/s00401-020-02187-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/05/2020] [Accepted: 06/26/2020] [Indexed: 12/18/2022]
Abstract
The proinflammatory cytokine interleukin 1 (IL-1) is crucially involved in the pathogenesis of multiple sclerosis (MS) and its animal model experimental autoimmune encephalomyelitis (EAE). Herein, we studied the role of IL-1 signaling in blood-brain barrier (BBB) endothelial cells (ECs), astrocytes and microglia for EAE development, using mice with the conditional deletion of its signaling receptor IL-1R1. We found that IL-1 signaling in microglia and astrocytes is redundant for the development of EAE, whereas the IL-1R1 deletion in BBB-ECs markedly ameliorated disease severity. IL-1 signaling in BBB-ECs upregulated the expression of the adhesion molecules Vcam-1, Icam-1 and the chemokine receptor Darc, all of which have been previously shown to promote CNS-specific inflammation. In contrast, IL-1R1 signaling suppressed the expression of the stress-responsive heme catabolizing enzyme heme oxygenase-1 (HO-1) in BBB-ECs, promoting disease progression via a mechanism associated with deregulated expression of the IL-1-responsive genes Vcam1, Icam1 and Ackr1 (Darc). Mechanistically, our data emphasize a functional crosstalk of BBB-EC IL-1 signaling and HO-1, controlling the transcription of downstream proinflammatory genes promoting the pathogenesis of autoimmune neuroinflammation.
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Affiliation(s)
- Judith Hauptmann
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Lisa Johann
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Federico Marini
- Center of Thrombosis and Hemostasis Mainz (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Institute for Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Maja Kitic
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Elisa Colombo
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Ilgiz A Mufazalov
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Martin Krueger
- Anatomical Institute, University of Leipzig, Leipzig, Germany
| | - Khalad Karram
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Sonja Moos
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Department of Dermatology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Florian Wanke
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Immunology, Infectious Diseases and Ophthalmology (I2O) Discovery and Translational Area Roche Innovation Center, Basel, Switzerland
| | - Florian C Kurschus
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Department of Dermatology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Matthias Klein
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | | | - Judith Strauß
- Institute for Neuroimmunology and Multiple Sclerosis Research, University Medical Center Göttingen, Göttingen, Germany
| | - Subhashini Bolisetty
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Fred Lühder
- Institute for Neuroimmunology and Multiple Sclerosis Research, University Medical Center Göttingen, Göttingen, Germany
| | - Markus Schwaninger
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Harald Binder
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Ingo Bechman
- Anatomical Institute, University of Leipzig, Leipzig, Germany
| | - Tobias Bopp
- Institute for Immunology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Anupam Agarwal
- Nephrology Research and Training Center, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Tommy Regen
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.
- Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
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Abbasian N, Bevington A, Burton JO, Herbert KE, Goodall AH, Brunskill NJ. Inorganic Phosphate (Pi) Signaling in Endothelial Cells: A Molecular Basis for Generation of Endothelial Microvesicles in Uraemic Cardiovascular Disease. Int J Mol Sci 2020; 21:ijms21196993. [PMID: 32977471 PMCID: PMC7583816 DOI: 10.3390/ijms21196993] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/16/2020] [Accepted: 09/21/2020] [Indexed: 12/22/2022] Open
Abstract
Hyperphosphataemia increases cardiovascular mortality in patients with kidney disease. Direct effects of high inorganic phosphate (Pi) concentrations have previously been demonstrated on endothelial cells (ECs), including generation of procoagulant endothelial microvesicles (MVs). However, no mechanism directly sensing elevated intracellular Pi has ever been described in mammalian cells. Here, we investigated the hypothesis that direct inhibition by Pi of the phosphoprotein phosphatase PP2A fulfils this sensing role in ECs, culminating in cytoskeleton disruption and MV generation. ECs were treated with control (1 mM [Pi]) vs. high (2.5 mM [Pi]), a condition that drives actin stress fibre depletion and MV generation demonstrated by confocal microscopy of F-actin and NanoSight Nanoparticle tracking, respectively. Immuno-blotting demonstrated that high Pi increased p-Src, p-PP2A-C and p-DAPK-1 and decreased p-TPM-3. Pi at 100 μM directly inhibited PP2A catalytic activity. Inhibition of PP2A enhanced inhibitory phosphorylation of DAPK-1, leading to hypophosphorylation of Tropomyosin-3 at S284 and MV generation. p-Src is known to perform inhibitory phosphorylation on DAPK-1 but also on PP2A-C. However, PP2A-C can itself dephosphorylate (and therefore inhibit) p-Src. The direct inhibition of PP2A-C by Pi is, therefore, amplified by the feedback loop between PP2A-C and p-Src, resulting in further PP2A-C inhibition. These data demonstrated that PP2A/Src acts as a potent sensor and amplifier of Pi signals which can further signal through DAPK-1/Tropomyosin-3 to generate cytoskeleton disruption and generation of potentially pathological MVs.
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Affiliation(s)
- Nima Abbasian
- Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Cardiovascular Biomedical Research Unit, Leicester LE3 9QP, UK; (J.O.B.); (K.E.H.); (A.H.G.); (N.J.B.)
- Correspondence: (N.A.); (A.B.); Tel.: +44-(0)116-246-0951 (A.B.)
| | - Alan Bevington
- Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Cardiovascular Biomedical Research Unit, Leicester LE3 9QP, UK; (J.O.B.); (K.E.H.); (A.H.G.); (N.J.B.)
- Correspondence: (N.A.); (A.B.); Tel.: +44-(0)116-246-0951 (A.B.)
| | - James O. Burton
- Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Cardiovascular Biomedical Research Unit, Leicester LE3 9QP, UK; (J.O.B.); (K.E.H.); (A.H.G.); (N.J.B.)
- Department of Nephrology, Leicester General Hospital, Leicester LE5 4PW, UK
| | - Karl E. Herbert
- Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Cardiovascular Biomedical Research Unit, Leicester LE3 9QP, UK; (J.O.B.); (K.E.H.); (A.H.G.); (N.J.B.)
| | - Alison H. Goodall
- Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Cardiovascular Biomedical Research Unit, Leicester LE3 9QP, UK; (J.O.B.); (K.E.H.); (A.H.G.); (N.J.B.)
| | - Nigel J. Brunskill
- Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Cardiovascular Biomedical Research Unit, Leicester LE3 9QP, UK; (J.O.B.); (K.E.H.); (A.H.G.); (N.J.B.)
- Department of Nephrology, Leicester General Hospital, Leicester LE5 4PW, UK
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Lee HJ, Park JH, Oh SY, Cho DH, Kim S, Jo I. Zearalenone-Induced Interaction between PXR and Sp1 Increases Binding of Sp1 to a Promoter Site of the eNOS, Decreasing Its Transcription and NO Production in BAECs. Toxins (Basel) 2020; 12:toxins12060421. [PMID: 32630586 PMCID: PMC7354576 DOI: 10.3390/toxins12060421] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 11/16/2022] Open
Abstract
Zearalenone (ZEN) is a non-steroidal mycotoxin that has various toxicological impacts on mammalian health. Here, we found that ZEN significantly affected the production of nitric oxide (NO) and the expression of endothelial NO synthase (eNOS) of bovine aortic endothelial cells (BAECs). A promoter analysis using 5′-serially deleted human eNOS promoter revealed that the proximal region (−135 to +22) was responsible for ZEN-mediated reduction of the human eNOS promoter activity. This effect was reversed by mutation of two specificity protein 1 (Sp1) binding elements in the human eNOS promoter. A chromatin immunoprecipitation assay revealed that ZEN increased Sp1 binding to the bovine eNOS promoter region (−113 to −12), which is homologous to −135 to +22 of the human eNOS promoter region. We also found that ZEN promoted the binding of the pregnane X receptor (PXR) to Sp1 of the bovine eNOS, consequently decreasing eNOS expression. This reduction of eNOS could have contributed to the decreased acetylcholine-induced vessel relaxation upon ZEN treatment in our ex vivo study using mouse aortas. In conclusion, our data demonstrate that ZEN decreases eNOS expression by enhancing the binding of PXR-Sp1 to the eNOS promoter, thereby decreasing NO production and potentially causing vessel dysfunction.
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Affiliation(s)
- Hyeon-Ju Lee
- Department of Molecular Medicine, College of Medicine, Ewha Womans University, Seoul 07804, Korea; (H.-J.L.); (J.-H.P.); (S.-Y.O.)
| | - Jung-Hyun Park
- Department of Molecular Medicine, College of Medicine, Ewha Womans University, Seoul 07804, Korea; (H.-J.L.); (J.-H.P.); (S.-Y.O.)
| | - Se-Young Oh
- Department of Molecular Medicine, College of Medicine, Ewha Womans University, Seoul 07804, Korea; (H.-J.L.); (J.-H.P.); (S.-Y.O.)
| | - Du-Hyong Cho
- Department of Pharmacology, College of Medicine, Yeungnam University, 170 Hyunchung-ro, Nam-gu, Daegu 42415, Korea; (D.-H.C.); (S.K.)
| | - Suji Kim
- Department of Pharmacology, College of Medicine, Yeungnam University, 170 Hyunchung-ro, Nam-gu, Daegu 42415, Korea; (D.-H.C.); (S.K.)
| | - Inho Jo
- Department of Molecular Medicine, College of Medicine, Ewha Womans University, Seoul 07804, Korea; (H.-J.L.); (J.-H.P.); (S.-Y.O.)
- Correspondence: ; Tel.: 82-2-6986-6267
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Garshick MS, Tawil M, Barrett TJ, Salud-Gnilo CM, Eppler M, Lee A, Scher JU, Neimann AL, Jelic S, Mehta NN, Fisher EA, Krueger JG, Berger JS. Activated Platelets Induce Endothelial Cell Inflammatory Response in Psoriasis via COX-1. Arterioscler Thromb Vasc Biol 2020; 40:1340-1351. [PMID: 32131611 PMCID: PMC7180109 DOI: 10.1161/atvbaha.119.314008] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Patients with psoriasis have impaired vascular health and increased cardiovascular disease (CVD). Platelets are key players in the pathogenesis of vascular dysfunction in cardiovascular disease and represent therapeutic targets in cardiovascular prevention. The object of this study was to define the platelet phenotype and effector cell properties on vascular health in psoriasis and evaluate whether aspirin modulates the platelet-induced phenotype. Approach and Results: Platelets from psoriasis patients (n=45) exhibited increased platelet activation (relative to age- and gender-matched controls, n=18), which correlated with psoriasis skin severity. Isolated platelets from psoriasis patients demonstrated a 2- to 3-fold (P<0.01) increased adhesion to human aortic endothelial cells and induced proinflammatory transcriptional changes, including upregulation of IL 8 (interleukin 8), IL1β, and Cox (cyclooxygenase)-2 Platelet RNA sequencing revealed an interferon signature and elevated expression of COX-1, which correlated with psoriasis disease severity (r=0.83, P=0.01). In a randomized trial of patients with psoriasis, 2 weeks of 81 mg low-dose aspirin, a COX-1 inhibitor, reduced serum thromboxane (Tx) B2 and reduced brachial vein endothelial proinflammatory transcript expression >70% compared with the no-treatment group (P<0.01). Improvement in brachial vein endothelial cell inflammation significantly correlated with change in serum TxB2 (r=0.48, P=0.02). CONCLUSIONS In patients with psoriasis, platelets are activated and induce endothelial cell inflammation. Low-dose aspirin improved endothelial cell health in psoriasis via platelet COX-1 inhibition. These data demonstrate a previously unappreciated role of platelets in psoriasis and endothelial cell inflammation and suggests that aspirin may be effective in improving vascular health in patients with psoriasis. Registration: URL: http://www.clinicaltrials.gov. Unique identifier: NCT03228017.
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Affiliation(s)
- Michael S. Garshick
- Center for the Prevention of Cardiovascular Disease, Department of Medicine, New York University School of Medicine
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
| | - Michael Tawil
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
| | - Tessa J. Barrett
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
| | | | - Michael Eppler
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
| | - Angela Lee
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
| | - Jose U. Scher
- Psoriatic Arthritis Center, Division of Rheumatology, Department of Medicine, New York University School of Medicine
| | - Andrea L. Neimann
- Ronald O. Perelman Department of Dermatology, New York University School of Medicine
| | - Sanja Jelic
- Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center
| | - Nehal N. Mehta
- Section of Inflammation and Cardiometabolic Diseases, National Heart, Lung and Blood Institute, National Institutes of Health
| | - Edward A. Fisher
- Center for the Prevention of Cardiovascular Disease, Department of Medicine, New York University School of Medicine
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
| | - James G. Krueger
- Psoriatic Arthritis Center, Division of Rheumatology, Department of Medicine, New York University School of Medicine
| | - Jeffrey S. Berger
- Center for the Prevention of Cardiovascular Disease, Department of Medicine, New York University School of Medicine
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine
- Division of Hematology, Department of Medicine, New York University School of Medicine
- Division of Vascular Surgery, Department of Surgery, New York University School of Medicine
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Washio K, Kusunoki Y, Tsunoda T, Osugi K, Ohigashi M, Murase T, Nakamura T, Matsuo T, Konishi K, Katsuno T, Namba M, Koyama H. Xanthine oxidoreductase activity correlates with vascular endothelial dysfunction in patients with type 1 diabetes. Acta Diabetol 2020; 57:31-39. [PMID: 31093763 DOI: 10.1007/s00592-019-01362-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/03/2019] [Indexed: 01/22/2023]
Abstract
AIMS Xanthine oxidoreductase (XOR) is an enzyme regulating uric acid synthesis and generation of reactive oxygen species. Several studies suggested relationship between XOR and atherosclerotic diseases; however, few previous studies have directly examined the relationship between XOR and vascular endothelial dysfunction in patients with type 1 diabetes mellitus (T1DM). The aim of this study was to evaluate the relationship between XOR activity and vascular endothelial function in patients with T1DM. METHODS Seventy-one patients with T1DM participated in the study and underwent assessments, including plasma XOR activity and flow-mediated dilation (FMD), to measure vascular endothelial function. RESULTS The natural logarithm value of XOR activity (ln-XOR) was 3.03 ± 0.99 pmol/h/mL, and FMD was 5.5% ± 2.4%. FMD was inversely and significantly correlated with ln-XOR (correlation coefficient: r = - 0.396, P < 0.001), UA (r = - 0.252, P = 0.034), and asymmetric dimethylarginine (ADMA) (r = - 0.414, P < 0.001). ln-XOR showed positive correlation with HbA1c (r = 0.292, P = 0.013), ALT (r = 0.658, P < 0.001), and ADMA (r = 0.363, P = 0.002). Stepwise multiple regression analysis showed that ln-XOR (standard partial regression coefficient: β = - 0.254, P = 0.018) was an independent explanatory variable of FMD. CONCLUSIONS The results of this study showed for the first time that XOR activity is associated with glycemic control in patients with T1DM and that XOR activity is associated with vascular endothelial dysfunction.
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Affiliation(s)
- Kahori Washio
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Yoshiki Kusunoki
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan.
| | - Taku Tsunoda
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Keiko Osugi
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Mana Ohigashi
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Takayo Murase
- Laboratory Management Department, Radioisotope and Chemical Analysis Center, Sanwa Kagaku Kenkyusho, Inabe, Mie, Japan
| | - Takashi Nakamura
- Laboratory Management Department, Radioisotope and Chemical Analysis Center, Sanwa Kagaku Kenkyusho, Inabe, Mie, Japan
| | - Toshihiro Matsuo
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Kosuke Konishi
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Tomoyuki Katsuno
- Department of Occupational Therapy, School of Rehabilitation, Hyogo University of Health Sciences, Kobe, Hyogo, Japan
| | - Mitsuyoshi Namba
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Hidenori Koyama
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Hyogo College of Medicine, 1-1, Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
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Abstract
The primary filtration of blood occurs in the glomerulus in the kidney. Destruction of any of the layers of the glomerular filtration barrier might result in proteinuric disease. The glomerular endothelial cells and especially its covering layer, the glycocalyx, play a pivotal role in development of albuminuria. One of the main sulfated glycosaminoglycans in the glomerular endothelial glycocalyx is heparan sulfate. The endoglycosidase heparanase degrades heparan sulfate, thereby affecting glomerular barrier function, immune reactivity and inflammation. Increased expression of glomerular heparanase correlates with loss of glomerular heparan sulfate in many glomerular diseases. Most importantly, heparanase knockout in mice prevented the development of albuminuria after induction of experimental diabetic nephropathy and experimental glomerulonephritis. Therefore, heparanase could serve as a pharmacological target for glomerular diseases. Several factors that regulate heparanase expression and activity have been identified and compounds aiming to inhibit heparanase activity are currently explored.
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Affiliation(s)
- Johan van der Vlag
- Department of Nephrology (480), Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands.
| | - Baranca Buijsers
- Department of Nephrology (480), Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands
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41
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Robillard S, Mercier C, Breton V, Paquin-Veillette J, Guay A, Lizotte F, Geraldes P. Ablation of angiotensin type 2 receptor prevents endothelial nitric oxide synthase glutathionylation and nitration in ischaemic abductor muscle of diabetic mice. Diab Vasc Dis Res 2020; 17:1479164119883978. [PMID: 31726870 PMCID: PMC7510371 DOI: 10.1177/1479164119883978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Peripheral artery disease is a severe complication of diabetes. We have reported that the deletion of angiotensin type 2 receptor in diabetic mice promoted vascular angiogenesis in the ischaemic muscle 4 weeks following ischaemia. However, the angiotensin type 2 receptor deletion beneficial effects occurred 2 weeks post surgery suggesting that angiotensin type 2 receptor may regulate other pro-angiogenic signalling pathways during the early phases of ischaemia. Nondiabetic and diabetic angiotensin type 2 receptor-deficient mice (Agtr2-/Y) underwent femoral artery ligation after 2 months of diabetes. Blood perfusion was measured every week up to 2 weeks post surgery. Expression of vascular endothelial growth factor, vascular endothelial growth factor receptor and endothelial nitric oxide synthase expression and activity were evaluated. Blood flow reperfusion in the ischaemic muscle of diabetic Agtr2+/Y mice was recovered at 35% as compared to a 68% recovery in diabetic Agtr2-/Y mice. The expression of vascular endothelial growth factor and its receptors was diminished in diabetic Agtr2+/Y mice, an observation not seen in diabetic Agtr2-/Y mice. Interestingly, Agtr2-/Y mice were protected from diabetes-induced glutathionylation, nitration and decreased endothelial nitric oxide synthase expression, which correlated with reduced endothelial cell death and enhanced vascular density in diabetic ischaemic muscle. In conclusion, our results suggest that the deletion of angiotensin type 2 receptor promotes blood flow reperfusion in diabetes by favouring endothelial cell survival and function.
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MESH Headings
- Animals
- Apoptosis
- Blood Flow Velocity
- Cattle
- Cells, Cultured
- Diabetes Mellitus/enzymology
- Diabetes Mellitus/genetics
- Disease Models, Animal
- Endothelial Cells/enzymology
- Endothelial Cells/pathology
- Glutathione/metabolism
- Hindlimb
- Ischemia/enzymology
- Ischemia/genetics
- Ischemia/physiopathology
- Mice, Inbred C57BL
- Mice, Knockout
- Muscle, Skeletal/blood supply
- Neovascularization, Physiologic
- Nitrates/metabolism
- Nitric Oxide Synthase Type III/metabolism
- Peripheral Arterial Disease/enzymology
- Peripheral Arterial Disease/genetics
- Peripheral Arterial Disease/physiopathology
- Protein Processing, Post-Translational
- Receptor, Angiotensin, Type 2/deficiency
- Receptor, Angiotensin, Type 2/genetics
- Recovery of Function
- Regional Blood Flow
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Affiliation(s)
- Stéphanie Robillard
- Research Center of the Centre
Hospitalier Universitaire de Sherbrooke, Québec, Canada
| | - Clément Mercier
- Research Center of the Centre
Hospitalier Universitaire de Sherbrooke, Québec, Canada
| | - Valérie Breton
- Research Center of the Centre
Hospitalier Universitaire de Sherbrooke, Québec, Canada
| | | | - Andréanne Guay
- Research Center of the Centre
Hospitalier Universitaire de Sherbrooke, Québec, Canada
| | - Farah Lizotte
- Research Center of the Centre
Hospitalier Universitaire de Sherbrooke, Québec, Canada
| | - Pedro Geraldes
- Research Center of the Centre
Hospitalier Universitaire de Sherbrooke, Québec, Canada
- Division of Endocrinology, Department of
Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada
- Pedro Geraldes, Division of Endocrinology,
Department of Medicine, Université de Sherbrooke, 3001 12e Ave Nord, Sherbrooke,
QC J1H 5N4, Canada.
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42
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Jung HS, Shimizu-Albergine M, Shen X, Kramer F, Shao D, Vivekanandan-Giri A, Pennathur S, Tian R, Kanter JE, Bornfeldt KE. TNF-α induces acyl-CoA synthetase 3 to promote lipid droplet formation in human endothelial cells. J Lipid Res 2020; 61:33-44. [PMID: 31722970 PMCID: PMC6939593 DOI: 10.1194/jlr.ra119000256] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/22/2019] [Indexed: 01/20/2023] Open
Abstract
Chronic inflammation contributes to cardiovascular disease. Increased levels of the inflammatory cytokine, TNF-α, are often present in conditions associated with cardiovascular disease risk, and TNF-α induces a number of pro-atherogenic effects in macrovascular endothelial cells, including expression of adhesion molecules and chemokines, and lipoprotein uptake and transcytosis to the subendothelial tissue. However, little is known about the roles of acyl-CoA synthetases (ACSLs), enzymes that esterify free fatty acids into their acyl-CoA derivatives, or about the effects of TNF-α on ACSLs in endothelial cells. Therefore, we investigated the effects of TNF-α on ACSLs and downstream lipids in cultured human coronary artery endothelial cells and human umbilical vein endothelial cells. We demonstrated that TNF-α induces ACSL1, ACSL3, and ACSL5, but not ACSL4, in both cell types. TNF-α also increased oleoyl-CoA levels, consistent with the increased ACSL3 expression. RNA-sequencing demonstrated that knockdown of ACSL3 had no marked effects on the TNF-α transcriptome. Instead, ACSL3 was required for TNF-α-induced lipid droplet formation in cells exposed to oleic acid. These results demonstrate that increased acyl-CoA synthesis as a result of ACSL3 induction is part of the TNF-α response in human macrovascular endothelial cells.
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Affiliation(s)
- Hye Seung Jung
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109
| | - Masami Shimizu-Albergine
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109
| | - Xia Shen
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109
| | - Farah Kramer
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109
| | - Dan Shao
- Departments of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA 98109
| | | | | | - Rong Tian
- Departments of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA 98109
| | - Jenny E Kanter
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109
| | - Karin E Bornfeldt
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109; Pathology, University of Washington, Seattle, WA 98109.
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43
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Liang B, Su J. Inducible Nitric Oxide Synthase ( iNOS) Mediates Vascular Endothelial Cell Apoptosis in Grass Carp Reovirus (GCRV)-Induced Hemorrhage. Int J Mol Sci 2019; 20:ijms20246335. [PMID: 31888180 PMCID: PMC6941106 DOI: 10.3390/ijms20246335] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023] Open
Abstract
Hemorrhage is one of the most obvious pathological phenomena in grass carp reovirus (GCRV) infection. The etiology of GCRV-induced hemorrhage is unclear. We found inducible nitric oxide synthase (iNOS) may relate to viral hemorrhage according to the previous studies, which is expressed at high levels after GCRV infection and is related to apoptosis. In this study, we aimed to investigate the mechanism of iNOS on apoptosis and hemorrhage at the cell level and individual level on subjects who were infected with GCRV and treated with S-methylisothiourea sulfate (SMT), an iNOS inhibitor. Cell structure, apoptosis rate, and hemorrhage were evaluated through fluorescence microscopy, Annexin V-FITC staining, and H&E staining, respectively. Cell samples and muscle tissues were collected for Western blotting, NO concentration measure, caspase activity assay, and qRT-PCR. iNOS-induced cell apoptosis and H&E staining showed that the vascular wall was broken after GCRV infection in vivo. When the function of iNOS was inhibited, NO content, apoptosis rate, caspase activity, and hemorrhage were reduced. Collectively, these results suggested iNOS plays a key role in apoptosis of vascular endothelial cells in GCRV-induced hemorrhage. This study is the first to elucidate the relationship between iNOS-induced cell apoptosis and GCRV-induced hemorrhage, which lays the foundation for further mechanistic research of virus-induced hemorrhage.
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Affiliation(s)
- Bo Liang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China;
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Jianguo Su
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China;
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Correspondence: ; Tel.: +86-27-8728-2227
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44
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Zhao X, Nedvetsky P, Stanchi F, Vion AC, Popp O, Zühlke K, Dittmar G, Klussmann E, Gerhardt H. Endothelial PKA activity regulates angiogenesis by limiting autophagy through phosphorylation of ATG16L1. eLife 2019; 8:e46380. [PMID: 31580256 PMCID: PMC6797479 DOI: 10.7554/elife.46380] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 10/01/2019] [Indexed: 12/15/2022] Open
Abstract
The cAMP-dependent protein kinase A (PKA) regulates various cellular functions in health and disease. In endothelial cells PKA activity promotes vessel maturation and limits tip cell formation. Here, we used a chemical genetic screen to identify endothelial-specific direct substrates of PKA in human umbilical vein endothelial cells (HUVEC) that may mediate these effects. Amongst several candidates, we identified ATG16L1, a regulator of autophagy, as novel target of PKA. Biochemical validation, mass spectrometry and peptide spot arrays revealed that PKA phosphorylates ATG16L1α at Ser268 and ATG16L1β at Ser269, driving phosphorylation-dependent degradation of ATG16L1 protein. Reducing PKA activity increased ATG16L1 protein levels and endothelial autophagy. Mouse in vivo genetics and pharmacological experiments demonstrated that autophagy inhibition partially rescues vascular hypersprouting caused by PKA deficiency. Together these results indicate that endothelial PKA activity mediates a critical switch from active sprouting to quiescence in part through phosphorylation of ATG16L1, which in turn reduces endothelial autophagy.
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Affiliation(s)
- Xiaocheng Zhao
- Vascular Patterning Laboratory, Center for Cancer BiologyVIBLeuvenBelgium
- Vascular Patterning Laboratory, Center for Cancer Biology, Department of OncologyVIBLeuvenBelgium
| | - Pavel Nedvetsky
- Vascular Patterning Laboratory, Center for Cancer BiologyVIBLeuvenBelgium
- Vascular Patterning Laboratory, Center for Cancer Biology, Department of OncologyVIBLeuvenBelgium
- Medical Cell Biology, Medical Clinic DUniversity Hospital MünsterMünsterGermany
| | - Fabio Stanchi
- Vascular Patterning Laboratory, Center for Cancer BiologyVIBLeuvenBelgium
- Vascular Patterning Laboratory, Center for Cancer Biology, Department of OncologyVIBLeuvenBelgium
| | - Anne-Clemence Vion
- Integrative Vascular Biology LabMax-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
- INSERM UMR-970, Paris Cardiovascular Research CenterParis Descartes UniversityParisFrance
| | - Oliver Popp
- ProteomicsMax-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Kerstin Zühlke
- Anchored Signaling LabMax-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Gunnar Dittmar
- ProteomicsMax-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
- CRP Santé · Department of OncologyLIH Luxembourg Institute of HealthLuxembourgLuxembourg
| | - Enno Klussmann
- Anchored Signaling LabMax-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
- DZHK (German Center for Cardiovascular Research)BerlinGermany
| | - Holger Gerhardt
- Vascular Patterning Laboratory, Center for Cancer BiologyVIBLeuvenBelgium
- Vascular Patterning Laboratory, Center for Cancer Biology, Department of OncologyVIBLeuvenBelgium
- Integrative Vascular Biology LabMax-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
- DZHK (German Center for Cardiovascular Research)BerlinGermany
- Berlin Institute of Health (BIH)BerlinGermany
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45
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Bonney S, Seitz S, Ryan CA, Jones KL, Clarke P, Tyler KL, Siegenthaler JA. Gamma Interferon Alters Junctional Integrity via Rho Kinase, Resulting in Blood-Brain Barrier Leakage in Experimental Viral Encephalitis. mBio 2019; 10:e01675-19. [PMID: 31387911 PMCID: PMC6686045 DOI: 10.1128/mbio.01675-19] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 07/12/2019] [Indexed: 12/20/2022] Open
Abstract
Blood-brain barrier (BBB) breakdown is a hallmark of many diseases of the central nervous system (CNS). Loss of BBB integrity in CNS diseases such as viral encephalitis results in the loss of nutrient/oxygen delivery, rapid infiltration of immune cells, and brain swelling that can exacerbate neuronal injury. Despite this, the cellular and molecular mechanisms that underlie BBB breakdown in viral encephalitis are incompletely understood. We undertook a comprehensive analysis of the cellular and molecular signaling events that induce BBB breakdown in an experimental model of virus-induced encephalitis in which neonatal mice are infected with reovirus (serotype 3 strain Abney). We show that BBB leakage during reovirus infection correlates with morphological changes in the vasculature, reductions in pericytes (BBB supporting cells), and disorganization of vascular junctions. Pathway analysis on RNA sequencing from brain endothelial cells identified the activation of interferon (IFN) signaling within the brain vasculature following reovirus infection. Our in vitro and in vivo studies show that type II IFN mediated by IFN-γ, a well known antiviral signal, is a major contributor to BBB leakage during reovirus infection. We show that IFN-γ reduces barrier properties in cultured brain endothelial cells through Rho kinase (ROCK)-mediated cytoskeletal contractions, resulting in junctional disorganization and cell-cell separations. In vivo neutralization of IFN-γ during reovirus infection significantly improved BBB integrity, pericyte coverage, attenuated vascular ROCK activity, and junctional disorganization. Our work supports a model in which IFN-γ acts directly on the brain endothelium to induce BBB breakdown through a mechanism involving ROCK-induced junctional disorganization.IMPORTANCE In an experimental viral encephalitis mouse model in which mice are infected with reovirus, we show that IFN-γ induces blood-brain barrier leakage. We show that IFN-γ promotes Rho kinase activity, resulting in actin cytoskeletal contractions in the brain endothelium that lead to vascular junctional disorganization and cell-cell separations. These studies now provide insight into a previously unknown mechanism for how blood-brain barrier breakdown occurs in viral encephalitis and implicates IFN-γ-Rho kinase activity as major contributor to this phenomenon. By identifying this mechanism of blood-brain barrier breakdown, we now provide potential therapeutic targets in treating patients with viral causes of encephalitis with the hope of limiting damage to the central nervous system.
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Affiliation(s)
- Stephanie Bonney
- Department of Pediatrics, Section of Developmental Biology, University of Colorado, School of Medicine, Aurora, Colorado, USA
- Cell Biology, Stem Cells, and Development Graduate Program, University of Colorado, School of Medicine, Aurora, Colorado, USA
| | - Scott Seitz
- Microbiology Graduate Program, University of Colorado, School of Medicine, Aurora, Colorado, USA
- Department of Neurology, University of Colorado, School of Medicine, Aurora, Colorado, USA
| | - Caitlin A Ryan
- Department of Pediatrics, Section of Developmental Biology, University of Colorado, School of Medicine, Aurora, Colorado, USA
| | - Kenneth L Jones
- Department of Pediatrics, Section of Hematology, Oncology, and Bone Marrow Transplant, University of Colorado, School of Medicine, Aurora, Colorado, USA
| | - Penny Clarke
- Department of Neurology, University of Colorado, School of Medicine, Aurora, Colorado, USA
| | - Kenneth L Tyler
- Department of Neurology, University of Colorado, School of Medicine, Aurora, Colorado, USA
| | - Julie A Siegenthaler
- Department of Pediatrics, Section of Developmental Biology, University of Colorado, School of Medicine, Aurora, Colorado, USA
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46
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Chen X, Zhabyeyev P, Azad AK, Wang W, Minerath RA, DesAulniers J, Grueter CE, Murray AG, Kassiri Z, Vanhaesebroeck B, Oudit GY. Endothelial and cardiomyocyte PI3Kβ divergently regulate cardiac remodelling in response to ischaemic injury. Cardiovasc Res 2019; 115:1343-1356. [PMID: 30496354 PMCID: PMC6587920 DOI: 10.1093/cvr/cvy298] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/08/2018] [Accepted: 11/27/2018] [Indexed: 12/13/2022] Open
Abstract
AIMS Cardiac remodelling in the ischaemic heart determines prognosis in patients with ischaemic heart disease (IHD), while enhancement of angiogenesis and cell survival has shown great potential for IHD despite translational challenges. Phosphoinositide 3-kinase (PI3K)/Akt signalling pathways play a critical role in promoting angiogenesis and cell survival. However, the effect of PI3Kβ in the ischaemic heart is poorly understood. This study investigates the role of endothelial and cardiomyocyte (CM) PI3Kβ in post-infarct cardiac remodelling. METHODS AND RESULTS PI3Kβ catalytic subunit-p110β level was increased in infarcted murine and human hearts. Using cell type-specific loss-of-function approaches, we reported novel and distinct actions of p110β in endothelial cells (ECs) vs. CMs in response to myocardial ischaemic injury. Inactivation of endothelial p110β resulted in marked resistance to infarction and adverse cardiac remodelling with decreased mortality, improved systolic function, preserved microvasculature, and enhanced Akt activation. Cultured ECs with p110β knockout or inhibition displayed preferential PI3Kα/Akt/endothelial nitric oxide synthase signalling that consequently promoted protective signalling and angiogenesis. In contrast, mice with CM p110β-deficiency exhibited adverse post-infarct ventricular remodelling with larger infarct size and deteriorated cardiac function, which was due to enhanced susceptibility of CMs to ischaemia-mediated cell death. Disruption of CM p110β signalling compromised nuclear p110β and phospho-Akt levels leading to perturbed gene expression and elevated pro-cell death protein levels, increasing the susceptibility to CM death. A similar divergent response of PI3Kβ endothelial and CM mutant mice was seen using a model of myocardial ischaemia-reperfusion injury. CONCLUSION These data demonstrate novel, differential, and cell-specific functions of PI3Kβ in the ischaemic heart. While the loss of endothelial PI3Kβ activity produces cardioprotective effects, CM PI3Kβ is protective against myocardial ischaemic injury.
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Affiliation(s)
- Xueyi Chen
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Pavel Zhabyeyev
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Abul K Azad
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Wang Wang
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
| | - Rachel A Minerath
- Division of Cardiovascular Medicine, Department of Internal Medicine, Francois M. Abboud Cardiovascular Research Center, Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, USA
| | - Jessica DesAulniers
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Chad E Grueter
- Division of Cardiovascular Medicine, Department of Internal Medicine, Francois M. Abboud Cardiovascular Research Center, Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, USA
| | - Allan G Murray
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Zamaneh Kassiri
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
| | - Bart Vanhaesebroeck
- University College London Cancer Institute, University College London, London, UK
| | - Gavin Y Oudit
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
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Chen L, Tang S, Zhang FF, Garcia V, Falck JR, Schwartzman ML, Arbab AS, Guo AM. CYP4A/20-HETE regulates ischemia-induced neovascularization via its actions on endothelial progenitor and preexisting endothelial cells. Am J Physiol Heart Circ Physiol 2019; 316:H1468-H1479. [PMID: 30951365 PMCID: PMC6620690 DOI: 10.1152/ajpheart.00690.2018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 03/29/2019] [Accepted: 03/29/2019] [Indexed: 11/22/2022]
Abstract
20-Hydroxyeicosatetraenoic acid (20-HETE) was recently identified as a novel contributor of ischemia-induced neovascularization based on the key observation that pharmacological interferences of CYP4A/20-HETE decrease ischemic neovascularization. The objective of the present study is to examine whether the underlying cellular mechanisms involve endothelial progenitor cells (EPCs) and preexisting endothelial cells (ECs). We found that ischemia leads to a time-dependent increase of cyp4a12 expression and 20-HETE production, which are endothelial in origin, using immunofluorescent microscopy, Western blot analysis, and LC-MS/MS. This is accompanied by increases in the tissue stromal cell-derived factor-1α (SDF-1α) expressions as well as SDF-1α plasma levels, EPC mobilization from bone marrow, and subsequent homing to ischemic tissues. Pharmacological interferences of CYP4A/20-HETE with a 20-HETE synthesis inhibitor, dibromo-dodecenyl-methylsulfimide (DDMS), or a 20-HETE antagonist, N-(20-hydroxyeicosa-6(Z), 15(Z)-dienoyl) glycine (6, 15-20-HEDGE), significantly attenuated these increases. Importantly, we also determined that 20-HETE plays a novel role in maintaining EPC functions and increasing the expression of Oct4, Sox2, and Nanog, which are indicative of increased progenitor cell stemness. Flow cytometric analysis revealed that pharmacological interferences of CYP4A/20-HETE decrease the EPC population in culture, whereas 20-HETE increases the cultured EPC population. Furthermore, ischemia also markedly increased the proliferation, oxidative stress, and ICAM-1 expression in the preexisting EC in the hindlimb gracilis muscles. We found that these increases were markedly negated by DDMS and 6, 15-20-HEDGE. Taken together, CYP4A/20-HETE regulates ischemia-induced compensatory neovascularization via its combined actions on promoting EPC and local preexisting EC responses that are associated with increased neovascularization. NEW & NOTEWORTHY CYP4A/20-hydroxyeicosatetraenoic acid (20-HETE) was recently discovered as a novel contributor of ischemia-induced neovascularization. However, the underlying molecular and cellular mechanisms are completely unknown. Here, we show that CYP4A/20-HETE regulates the ischemic neovascularization process via its combined actions on both endothelial progenitor cells (EPCs) and preexisting endothelial cells. Moreover, this is the first study, to the best of our knowledge, that associates CYP4A/20-HETE with EPC differentiation and stemness.
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Affiliation(s)
- Li Chen
- State Key Laboratory of Oncology, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center , Guangzhou , People's Republic of China
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Samantha Tang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Frank F Zhang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - John R Falck
- University of Texas Southwestern Medical Center , Dallas, Texas
| | | | - Ali S Arbab
- Cancer Center, Augusta University , Augusta, Georgia
| | - Austin M Guo
- Department of Pharmacology, New York Medical College, Valhalla, New York
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Carretero-Ortega J, Chhangawala Z, Hunt S, Narvaez C, Menéndez-González J, Gay CM, Zygmunt T, Li X, Torres-Vázquez J. GIPC proteins negatively modulate Plexind1 signaling during vascular development. eLife 2019; 8:e30454. [PMID: 31050647 PMCID: PMC6499541 DOI: 10.7554/elife.30454] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 04/15/2019] [Indexed: 12/18/2022] Open
Abstract
Semaphorins (SEMAs) and their Plexin (PLXN) receptors are central regulators of metazoan cellular communication. SEMA-PLXND1 signaling plays important roles in cardiovascular, nervous, and immune system development, and cancer biology. However, little is known about the molecular mechanisms that modulate SEMA-PLXND1 signaling. As PLXND1 associates with GIPC family endocytic adaptors, we evaluated the requirement for the molecular determinants of their association and PLXND1's vascular role. Zebrafish that endogenously express a Plxnd1 receptor with a predicted impairment in GIPC binding exhibit low penetrance angiogenesis deficits and antiangiogenic drug hypersensitivity. Moreover, gipc mutant fish show angiogenic impairments that are ameliorated by reducing Plxnd1 signaling. Finally, GIPC depletion potentiates SEMA-PLXND1 signaling in cultured endothelial cells. These findings expand the vascular roles of GIPCs beyond those of the Vascular Endothelial Growth Factor (VEGF)-dependent, proangiogenic GIPC1-Neuropilin 1 complex, recasting GIPCs as negative modulators of antiangiogenic PLXND1 signaling and suggest that PLXND1 trafficking shapes vascular development.
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Affiliation(s)
- Jorge Carretero-Ortega
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Zinal Chhangawala
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Shane Hunt
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Carlos Narvaez
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Javier Menéndez-González
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Carl M Gay
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Tomasz Zygmunt
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
| | - Xiaochun Li
- Department of Population HealthNew York University School of MedicineNew YorkUnited States
| | - Jesús Torres-Vázquez
- Department of Cell Biology, Skirball Institute of Biomolecular MedicineNew York University Langone Medical CenterNew YorkUnited States
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49
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Mudersbach T, Siuda D, Kohlstedt K, Fleming I. Epigenetic control of the angiotensin-converting enzyme in endothelial cells during inflammation. PLoS One 2019; 14:e0216218. [PMID: 31042763 PMCID: PMC6494048 DOI: 10.1371/journal.pone.0216218] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 04/15/2019] [Indexed: 11/18/2022] Open
Abstract
The angiotensin-converting enzyme (ACE) plays a central role in the renin-angiotensin system, which is involved in the regulation of blood pressure. Alterations in ACE expression or activity are associated with various pathological phenotypes, particularly cardiovascular diseases. In human endothelial cells, ACE was shown to be negatively regulated by tumor necrosis factor (TNF) α. To examine, whether or not, epigenetic factors were involved in ACE expression regulation, methylated DNA immunoprecipitation and RNA interference experiments directed against regulators of DNA methylation homeostasis i.e., DNA methyltransferases (DNMTs) and ten-eleven translocation methylcytosine dioxygenases (TETs), were performed. TNFα stimulation enhanced DNA methylation in two distinct regions within the ACE promoter via a mechanism linked to DNMT3a and DNMT3b, but not to DNMT1. At the same time, TET1 protein expression was downregulated. In addition, DNA methylation decreased the binding affinity of the transcription factor MYC associated factor X to the ACE promoter. In conclusion, DNA methylation determines the TNFα-dependent regulation of ACE gene transcription and thus protein expression in human endothelial cells.
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Affiliation(s)
- Thomas Mudersbach
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Daniel Siuda
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
| | - Karin Kohlstedt
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany
| | - Ingrid Fleming
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt am Main, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany
- * E-mail:
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50
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Teng X, Ji C, Zhong H, Zheng D, Ni R, Hill DJ, Xiong S, Fan GC, Greer PA, Shen Z, Peng T. Selective deletion of endothelial cell calpain in mice reduces diabetic cardiomyopathy by improving angiogenesis. Diabetologia 2019; 62:860-872. [PMID: 30778623 PMCID: PMC6702672 DOI: 10.1007/s00125-019-4828-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 01/14/2019] [Indexed: 01/09/2023]
Abstract
AIMS/HYPOTHESIS The role of non-cardiomyocytes in diabetic cardiomyopathy has not been fully addressed. This study investigated whether endothelial cell calpain plays a role in myocardial endothelial injury and microvascular rarefaction in diabetes, thereby contributing to diabetic cardiomyopathy. METHODS Endothelial cell-specific Capns1-knockout (KO) mice were generated. Conditions mimicking prediabetes and type 1 and type 2 diabetes were induced in these KO mice and their wild-type littermates. Myocardial function and coronary flow reserve were assessed by echocardiography. Histological analyses were performed to determine capillary density, cardiomyocyte size and fibrosis in the heart. Isolated aortas were assayed for neovascularisation. Cultured cardiac microvascular endothelial cells were stimulated with high palmitate. Angiogenesis and apoptosis were analysed. RESULTS Endothelial cell-specific deletion of Capns1 disrupted calpain 1 and calpain 2 in endothelial cells, reduced cardiac fibrosis and hypertrophy, and alleviated myocardial dysfunction in mouse models of diabetes without significantly affecting systemic metabolic variables. These protective effects of calpain disruption in endothelial cells were associated with an increase in myocardial capillary density (wild-type vs Capns1-KO 3646.14 ± 423.51 vs 4708.7 ± 417.93 capillary number/high-power field in prediabetes, 2999.36 ± 854.77 vs 4579.22 ± 672.56 capillary number/high-power field in type 2 diabetes and 2364.87 ± 249.57 vs 3014.63 ± 215.46 capillary number/high-power field in type 1 diabetes) and coronary flow reserve. Ex vivo analysis of neovascularisation revealed more endothelial cell sprouts from aortic rings of prediabetic and diabetic Capns1-KO mice compared with their wild-type littermates. In cultured cardiac microvascular endothelial cells, inhibition of calpain improved angiogenesis and prevented apoptosis under metabolic stress. Mechanistically, deletion of Capns1 elevated the protein levels of β-catenin in endothelial cells of Capns1-KO mice and constitutive activity of calpain 2 suppressed β-catenin protein expression in cultured endothelial cells. Upregulation of β-catenin promoted angiogenesis and inhibited apoptosis whereas knockdown of β-catenin offset the protective effects of calpain inhibition in endothelial cells under metabolic stress. CONCLUSIONS/INTERPRETATION These results delineate a primary role of calpain in inducing cardiac endothelial cell injury and impairing neovascularisation via suppression of β-catenin, thereby promoting diabetic cardiomyopathy, and indicate that calpain is a promising therapeutic target to prevent diabetic cardiac complications.
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Affiliation(s)
- Xiaomei Teng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
- Department of Cardiovascular Surgery of the First Affiliated Hospital, Soochow University, Suzhou, China
- Institute for Cardiovascular Science, Soochow University, Suzhou, China
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Chen Ji
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Huiting Zhong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Dong Zheng
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Rui Ni
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - David J Hill
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada
- Department of Medicine, Western University, London, ON, Canada
- Department of Physiology and Pharmacology, Western University, London, ON, Canada
| | - Sidong Xiong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Peter A Greer
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, Queen's University, Kingston, ON, Canada
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - Zhenya Shen
- Department of Cardiovascular Surgery of the First Affiliated Hospital, Soochow University, Suzhou, China
- Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Tianqing Peng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China.
- Critical Illness Research, Lawson Health Research Institute, VRL 6th Floor, A6-140, 800 Commissioners Road, London, ON, N6A 4G5, Canada.
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada.
- Department of Medicine, Western University, London, ON, Canada.
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