1
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Li W, Li Y, Sun P, Zhang N, Zhao Y, Qin S, Zhao Y. Antimicrobial peptide-modified silver nanoparticles for enhancing the antibacterial efficacy. RSC Adv 2020; 10:38746-38754. [PMID: 35518403 PMCID: PMC9057333 DOI: 10.1039/d0ra05640e] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 10/05/2020] [Indexed: 12/14/2022] Open
Abstract
Antibiotic-resistant bacteria are becoming a serious threat to public health worldwide. To address this problem, we have developed multifunctional peptide (MFP)-coated silver nanoparticles (MFP@AgNPs) for antibacterial studies. MFPs, which can physically adsorb to AgNPs via electrostatic interactions are comprised of a matrix metalloproteinase (MMP) cleavable sequence (PVGLIG), an antimicrobial peptide (tachyplesin-1), and a target peptide (PGP-PEG). The resulting MFP@AgNPs were characterized by various technologies, including UV-vis spectrophotometry, zeta potential analyzer, circular dichroism (CD) spectroscopy, attenuated total reflection-Fourier-transform infrared spectroscopy (ATR-FTIR), and transmission electron microscopy (TEM). The MIC and MBC were investigated against both Gram-positive bacteria and Gram-negative bacteria. The antibacterial activity in vivo was evaluated on MDR-AB (multidrug-resistant Acinetobacter baumannii) infected mice. We found that MFP@AgNPs exhibited antibacterial activity against both Gram-positive bacteria and Gram-negative bacteria. Compared to bare AgNPs, MFP@AgNPs-1 killed MDR-AB faster and more efficiently. SEM images showed that MFP@AgNPs-1 induced cell disruption via cell membrane damage. In vivo studies further confirmed the enhanced antibacterial activity against MDR-AB infections. The developed MFP@AgNPs-1 reduced the cytotoxicity of AgNPs and enhanced the antibacterial activity against MDR-AB in vitro and in vivo, providing a possible solution against multidrug-resistant bacterial infections.
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Affiliation(s)
- Wenxi Li
- Zhengzhou Traditional Chinese Hospital of Orthopaedics Zhengzhou Henan 450004 PR China
| | - Yongchun Li
- School of Pharmaceutical Science, Zhengzhou University Zhengzhou Henan 450001 PR China +86 0371 67739546 +86037167739165
| | - Pengchao Sun
- Institute for Biological Interfaces 1, Karlsruhe Institute of Technology 76344 Eggenstein-Leopoldshafen Germany
| | - Nan Zhang
- School of Pharmaceutical Science, Zhengzhou University Zhengzhou Henan 450001 PR China +86 0371 67739546 +86037167739165
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China Zhengzhou Henan 450001 PR China
| | - Yidan Zhao
- School of Pharmaceutical Science, Zhengzhou University Zhengzhou Henan 450001 PR China +86 0371 67739546 +86037167739165
| | - Shangshang Qin
- School of Pharmaceutical Science, Zhengzhou University Zhengzhou Henan 450001 PR China +86 0371 67739546 +86037167739165
| | - Yongxing Zhao
- School of Pharmaceutical Science, Zhengzhou University Zhengzhou Henan 450001 PR China +86 0371 67739546 +86037167739165
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China Zhengzhou Henan 450001 PR China
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2
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Dang Y, An C, Li Y, Han D, Liu X, Zhang F, Xu Y, Zhong H, Karim Khan MK, Zou F, Sun X. Neutrophil-mediated and low density lipoprotein receptor-mediated dual-targeting nanoformulation enhances brain accumulation of scutellarin and exerts neuroprotective effects against ischemic stroke. RSC Adv 2019; 9:1299-1318. [PMID: 35518053 PMCID: PMC9059646 DOI: 10.1039/c8ra06688d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 12/05/2018] [Indexed: 11/21/2022] Open
Abstract
Delivery of poorly permeable drugs across the blood-brain barrier (BBB) is a great challenge in the treatment of ischemic stroke.
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3
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Patel DF, Snelgrove RJ. The multifaceted roles of the matrikine Pro-Gly-Pro in pulmonary health and disease. Eur Respir Rev 2018; 27:180017. [PMID: 29950303 PMCID: PMC9488800 DOI: 10.1183/16000617.0017-2018] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/08/2018] [Indexed: 02/06/2023] Open
Abstract
Matrikines are bioactive fragments of the extracellular matrix (ECM) that are fundamental in regulating a diverse array of physiological processes. The tripeptide Proline-Glycine-Proline (PGP) is a collagen-derived matrikine that has classically been described as a neutrophil chemoattractant. In this article, we describe our current understanding of the pathways that generate, degrade and modify PGP to dictate its bioavailability and stability. Additionally, we discuss our expanding appreciation of the capacity of PGP to regulate diverse cell types and biological processes, independent of its activity on neutrophils, including a putative role in wound repair. We argue that PGP functions as a primitive and conserved damage-associated molecular pattern, which is generated during infection or injury and subsequently acts to shape ensuing inflammatory and repair processes. As a fragment of the ECM that accumulates at the epicentre of the action, PGP is perfectly positioned to focus neutrophils to the exact site required and direct a localised repair response. However, it is essential that PGP is efficiently degraded, as if this matrikine is allowed to persist then pathology can ensue. Accordingly, we discuss how this pathway is subverted in chronic lung diseases giving rise to persistent inflammation and pathological tissue remodelling.
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Affiliation(s)
- Dhiren F Patel
- Inflammation, Repair and Development Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Robert J Snelgrove
- Inflammation, Repair and Development Section, National Heart and Lung Institute, Imperial College London, London, UK
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4
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Li Y, An C, Han D, Dang Y, Liu X, Zhang F, Xu Y, Zhong H, Sun X. Neutrophil affinity for PGP and HAIYPRH (T7) peptide dual-ligand functionalized nanoformulation enhances the brain delivery of tanshinone IIA and exerts neuroprotective effects against ischemic stroke by inhibiting proinflammatory signaling pathways. NEW J CHEM 2018. [DOI: 10.1039/c8nj04819c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A great challenge to the therapy of ischemic stroke is the poor physicochemical properties and inability of the drug to cross the blood–brain barrier (BBB).
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Affiliation(s)
- Yutao Li
- Department of Pharmaceutical Engineering
- School of Chemical and Environmental Engineering
- Key Laboratory of Green Chemical Engineering
- Harbin University of Science and Technology
- Harbin
| | - Chiying An
- The First Affiliated Hospital of Harbin Medical University
- Harbin
- China
| | - Danan Han
- Department of Pharmaceutical Engineering
- School of Chemical and Environmental Engineering
- Key Laboratory of Green Chemical Engineering
- Harbin University of Science and Technology
- Harbin
| | - Yanxin Dang
- Department of Pharmaceutical Engineering
- School of Chemical and Environmental Engineering
- Key Laboratory of Green Chemical Engineering
- Harbin University of Science and Technology
- Harbin
| | - Xin Liu
- Department of Pharmaceutical Engineering
- School of Chemical and Environmental Engineering
- Key Laboratory of Green Chemical Engineering
- Harbin University of Science and Technology
- Harbin
| | - Fengming Zhang
- Department of Pharmaceutical Engineering
- School of Chemical and Environmental Engineering
- Key Laboratory of Green Chemical Engineering
- Harbin University of Science and Technology
- Harbin
| | - Yuan Xu
- Department of Pharmacology
- School of Medicine
- Yale University
- New Haven
- USA
| | - Haijing Zhong
- Department of Pharmacology
- School of Medicine
- Yale University
- New Haven
- USA
| | - Xiaojun Sun
- Department of Pharmaceutical Engineering
- School of Chemical and Environmental Engineering
- Key Laboratory of Green Chemical Engineering
- Harbin University of Science and Technology
- Harbin
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5
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Kwon YW, Heo SC, Lee TW, Park GT, Yoon JW, Jang IH, Kim SC, Ko HC, Ryu Y, Kang H, Ha CM, Lee SC, Kim JH. N-Acetylated Proline-Glycine-Proline Accelerates Cutaneous Wound Healing and Neovascularization by Human Endothelial Progenitor Cells. Sci Rep 2017; 7:43057. [PMID: 28230162 PMCID: PMC5322356 DOI: 10.1038/srep43057] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/17/2017] [Indexed: 12/22/2022] Open
Abstract
Human endothelial progenitor cells (hEPCs) are promising therapeutic resources for wound repair through stimulating neovascularization. However, the hEPCs-based cell therapy has been hampered by poor engraftment of transplanted cells. In this study, we explored the effects of N-acetylated Proline-Glycine-Proline (Ac-PGP), a degradation product of collagen, on hEPC-mediated cutaneous wound healing and neovascularization. Treatment of hEPCs with Ac-PGP increased migration, proliferation, and tube-forming activity of hEPCs in vitro. Knockdown of CXCR2 expression in hEPCs abrogated the stimulatory effects of Ac-PGP on migration and tube formation. In a cutaneous wound healing model of rats and mice, topical application of Ac-PGP accelerated cutaneous wound healing with promotion of neovascularization. The positive effects of Ac-PGP on wound healing and neovascularization were blocked in CXCR2 knockout mice. In nude mice, the individual application of Ac-PGP treatment or hEPC injection accelerated wound healing by increasing neovascularization. Moreover, the combination of Ac-PGP treatment and hEPC injection further stimulated wound healing and neovascularization. Topical administration of Ac-PGP onto wound bed stimulated migration and engraftment of transplanted hEPCs into cutaneous dermal wounds. Therefore, these results suggest novel applications of Ac-PGP in promoting wound healing and augmenting the therapeutic efficacy of hEPCs.
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Affiliation(s)
- Yang Woo Kwon
- Department of Physiology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Soon Chul Heo
- Department of Physiology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Tae Wook Lee
- Department of Physiology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Gyu Tae Park
- Department of Physiology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Jung Won Yoon
- Department of Physiology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Il Ho Jang
- Department of Oral Biochemistry and Molecular Biology, Pusan National University School of Dentistry, Yangsan 50612, Republic of Korea
| | - Seung-Chul Kim
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Hyun-Chang Ko
- Department of Dermatology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea
| | - Youngjae Ryu
- Korea Brain Research Institute, Daegu 41068, Republic of Korea
| | - Hyeona Kang
- Korea Brain Research Institute, Daegu 41068, Republic of Korea
| | - Chang Man Ha
- Korea Brain Research Institute, Daegu 41068, Republic of Korea
| | - Sang Chul Lee
- Functional Genomics Research Center, KRIBB, Daejeon 34141, Republic of Korea
| | - Jae Ho Kim
- Department of Physiology, Pusan National University School of Medicine, Yangsan 50612, Republic of Korea.,Research Institute of Convergence Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
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6
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Akthar S, Patel DF, Beale RC, Peiró T, Xu X, Gaggar A, Jackson PL, Blalock JE, Lloyd CM, Snelgrove RJ. Matrikines are key regulators in modulating the amplitude of lung inflammation in acute pulmonary infection. Nat Commun 2015; 6:8423. [PMID: 26400771 PMCID: PMC4595997 DOI: 10.1038/ncomms9423] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 08/20/2015] [Indexed: 01/17/2023] Open
Abstract
Bioactive matrix fragments (matrikines) have been identified in a myriad of disorders, but their impact on the evolution of airway inflammation has not been demonstrated. We recently described a pathway where the matrikine and neutrophil chemoattractant proline–glycine–proline (PGP) could be degraded by the enzyme leukotriene A4 hydrolase (LTA4H). LTA4H classically functions in the generation of pro-inflammatory leukotriene B4, thus LTA4H exhibits opposing pro- and anti-inflammatory activities. The physiological significance of this secondary anti-inflammatory activity remains unknown. Here we show, using readily resolving pulmonary inflammation models, that loss of this secondary activity leads to more pronounced and sustained inflammation and illness owing to PGP accumulation. PGP elicits an exacerbated neutrophilic inflammation and protease imbalance that further degrades the extracellular matrix, generating fragments that perpetuate inflammation. This highlights a critical role for the secondary anti-inflammatory activity of LTA4H and thus has consequences for the generation of global LTA4H inhibitors currently being developed. Proteases degrade extracellular matrix during inflammation, releasing peptides that can recruit neutrophils. Here the authors show that degradation of such bioactive peptide by the enzyme leukotriene A4 hydrolase is critical to limit pulmonary inflammation during bacterial infection in mice.
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Affiliation(s)
- Samia Akthar
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
| | - Dhiren F Patel
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
| | - Rebecca C Beale
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
| | - Teresa Peiró
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
| | - Xin Xu
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham and Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 3529, USA
| | - Amit Gaggar
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham and Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 3529, USA.,Gregory Fleming James Cystic Fibrosis Center and Program in Protease and Matrix Biology, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA.,Birmingham V.A. Medical Center, Birmingham, Alabama 35294, USA
| | - Patricia L Jackson
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham and Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 3529, USA
| | - J Edwin Blalock
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham and Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 3529, USA.,Birmingham V.A. Medical Center, Birmingham, Alabama 35294, USA
| | - Clare M Lloyd
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
| | - Robert J Snelgrove
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, UK
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7
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Abdul Roda M, Fernstrand AM, Redegeld FA, Blalock JE, Gaggar A, Folkerts G. The matrikine PGP as a potential biomarker in COPD. Am J Physiol Lung Cell Mol Physiol 2015; 308:L1095-101. [PMID: 26033353 DOI: 10.1152/ajplung.00040.2015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 04/06/2015] [Indexed: 12/16/2022] Open
Abstract
The lack of a well-characterized biomarker for the diagnosis of chronic obstructive pulmonary disease (COPD) has increased interest toward finding one, because this would provide potential insight into disease pathogenesis and progression. Since persistent neutrophilia is an important hallmark in COPD Pro-Gly-Pro (PGP), an extracellular matrix-derived neutrophil chemoattractant, has been suggested to be a potential biomarker in COPD. The purpose of this review is to critically examine both biological and clinical data related to the role of PGP in COPD, with particular focus on its role as a clinical biomarker and potential therapeutic target in disease. The data provided in this review will offer insight into the potential use of PGP as end point for future clinical studies in COPD lung disease. Following PGP levels during disease might serve as a guide for the progression of lung disorders.
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Affiliation(s)
- Mojtaba Abdul Roda
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Science, Faculty of Science, Utrecht University, Utrecht, The Netherlands; and
| | - Amanda M Fernstrand
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Science, Faculty of Science, Utrecht University, Utrecht, The Netherlands; and
| | - Frank A Redegeld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Science, Faculty of Science, Utrecht University, Utrecht, The Netherlands; and
| | - J Edwin Blalock
- Department of Medicine and Division of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Amit Gaggar
- Department of Medicine and Division of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Gert Folkerts
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Science, Faculty of Science, Utrecht University, Utrecht, The Netherlands; and
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8
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Mikami Y, Matsuzaki H, Horie M, Noguchi S, Jo T, Narumoto O, Kohyama T, Takizawa H, Nagase T, Yamauchi Y. Lymphotoxin β receptor signaling induces IL-8 production in human bronchial epithelial cells. PLoS One 2014; 9:e114791. [PMID: 25501580 PMCID: PMC4263477 DOI: 10.1371/journal.pone.0114791] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 11/13/2014] [Indexed: 01/06/2023] Open
Abstract
Asthma-related mortality has been decreasing due to inhaled corticosteroid use, but severe asthma remains a major clinical problem. One characteristic of severe asthma is resistance to steroid therapy, which is related to neutrophilic inflammation. Recently, the tumor necrosis factor superfamily member (TNFSF) 14/LIGHT has been recognized as a key mediator in severe asthmatic airway inflammation. However, the profiles and intracellular mechanisms of cytokine/chemokine production induced in cells by LIGHT are poorly understood. We aimed to elucidate the molecular mechanism of LIGHT-induced cytokine/chemokine production by bronchial epithelial cells. Human bronchial epithelial cells express lymphotoxin β receptor (LTβR), but not herpesvirus entry mediator, which are receptors for LIGHT. LIGHT induced various cytokines/chemokines, such as interleukin (IL)-6, oncostatin M, monocyte chemotactic protein-1, growth-regulated protein α and IL-8. Specific siRNA for LTβR attenuated IL-6 and IL-8 production by BEAS-2B and normal human bronchial epithelial cells. LIGHT activated intracellular signaling, such as mitogen-activated protein kinase and nuclear factor-κB (NF-κB) signaling. LIGHT also induced luciferase activity of NF-κB response element, but not of activator protein-1 or serum response element. Specific inhibitors of phosphorylation of extracellular signal-regulated kinase (Erk) and that of inhibitor κB attenuated IL-8 production, suggesting that LIGHT-LTβR signaling induces IL-8 production via the Erk and NF-κB pathways. LIGHT, via LTβR signaling, may contribute to exacerbation of airway neutrophilic inflammation through cytokine and chemokine production by bronchial epithelial cells.
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Affiliation(s)
- Yu Mikami
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hirotaka Matsuzaki
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masafumi Horie
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Satoshi Noguchi
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Taisuke Jo
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Osamu Narumoto
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tadashi Kohyama
- Department of Internal medicine, Teikyo University Mizonokuchi hospital, Kanagawa, Japan
| | - Hajime Takizawa
- Department of Respiratory Medicine, Kyorin University, Tokyo, Japan
| | - Takahide Nagase
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuhiro Yamauchi
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- * E-mail:
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Fu J, Chen YF, Zhao X, Creighton JR, Guo Y, Hage FG, Oparil S, Xing DD. Targeted delivery of pulmonary arterial endothelial cells overexpressing interleukin-8 receptors attenuates monocrotaline-induced pulmonary vascular remodeling. Arterioscler Thromb Vasc Biol 2014; 34:1539-47. [PMID: 24790141 DOI: 10.1161/atvbaha.114.303821] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Interleukin-8 (IL-8) receptors IL8RA and IL8RB (IL8RA/B) on neutrophil membranes bind to IL-8 with high affinity and play a critical role in neutrophil recruitment to sites of injury and inflammation. This study tested the hypothesis that administration of rat pulmonary arterial endothelial cells (ECs) overexpressing IL8RA/B can accelerate the adhesion of ECs to the injured lung and inhibit monocrotaline-induced pulmonary inflammation, arterial thickening and hypertension, and right ventricular hypertrophy. APPROACH AND RESULTS The treatment groups included 10-week-old ovariectomized Sprague-Dawley rats that received subcutaneous injection of PBS (vehicle), a single injection of monocrotaline (monocrotaline alone, 60 mg/kg, SC), monocrotaline followed by intravenous transfusion of ECs transduced with the empty adenoviral vector (null-EC), and monocrotaline followed by intravenous transfusion of ECs overexpressing IL8RA/B (1.5 × 10(6) cells/rat). Two days or 4 weeks after monocrotaline treatment, endothelial nitric oxide synthase, inducible nitric oxide synthase, cytokine-induced neutrophil chemoattractant-2β (IL-8 equivalent in rat), and monocyte chemoattractant protein-1 expression, neutrophil and macrophage infiltration into pulmonary arterioles, and arteriolar and alveolar morphology were measured by histological and immunohistochemical techniques. Proinflammatory cytokine/chemokine protein levels were measured by Multiplex rat-specific magnetic bead-based sandwich immunoassay in total lung homogenates. Transfusion of ECs overexpressing IL8RA/B significantly reduced monocrotaline-induced neutrophil infiltration and proinflammatory mediator (IL-8, monocyte chemoattractant protein-1, inducible nitric oxide synthase, cytokine-induced neutrophil chemoattractant, and macrophage inflammatory protein-2) expression in lungs and pulmonary arterioles and alveoli, pulmonary arterial pressure, and pulmonary arterial and right ventricular hypertrophy and remodeling. CONCLUSIONS These provocative findings suggest that targeted delivery of ECs overexpressing IL8RA/B is effective in repairing the injured pulmonary vasculature.
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Affiliation(s)
- Jinyan Fu
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Yiu-Fai Chen
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Xiangmin Zhao
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Judy R Creighton
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Yuanyuan Guo
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Fadi G Hage
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Suzanne Oparil
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.)
| | - Daisy D Xing
- From the Vascular Biology and Hypertension Program, Division of Cardiovascular Disease, Department of Medicine (J.F., Y.-F.C., X.Z., Y.G., F.G.H., S.O., D.D.X.) and Department of Anesthesiology, University of Alabama at Birmingham (J.R.C.); Department of Biochemistry and the Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Xinjiang, China (J.F.); and Section of Cardiology, Birmingham Veteran's Administration Medical Center, AL (F.G.H.).
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10
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Medvedeva EV, Dmitrieva VG, Povarova OV, Limborska SA, Skvortsova VI, Myasoedov NF, Dergunova LV. Tripeptide Pro-Gly-Pro affects rat-brain transcriptome during focal ischemia. Mol Biol 2014. [DOI: 10.1134/s0026893314020125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Abstract
Chemokines are low-molecular-weight, secreted proteins that act as leukocyte-specific chemoattractants. The chemokine family has more than 40 members. Based on the position of two conserved cysteines in the N-terminal domain, chemokines can be divided into the CXC, C, CC, and CX3C subfamilies. The interaction of chemokines with their receptors mediates signaling pathways that play critical roles in cell migration, differentiation, and proliferation. The receptors for chemokines are G protein-coupled receptors (GPCRs), and thus far, seven CXC receptors have been cloned and are designated CXCR1-7. Constitutively active GPCRs are present in several human immune-mediated diseases and in tumors, and they have provided valuable information in understanding the molecular mechanism of GPCR activation. Several constitutively active CXC chemokine receptors include the V6.40A and V6.40N mutants of CXCR1; the D3.49V variant of CXCR2; the N3.35A, N3.35S, and T2.56P mutants of CXCR3; the N3.35 mutation of CXCR4; and the naturally occurring KSHV-GPCR. Here, we review the regulation of CXC chemokine receptor signaling, with a particular focus on the constitutive activation of these receptors and the implications in physiological conditions and in pathogenesis. Understanding the mechanisms behind the constitutive activation of CXC chemokine receptors may aid in pharmaceutical design and the screening of inverse agonists and allosteric modulators for the treatment of autoimmune diseases and cancers.
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Affiliation(s)
- Xinbing Han
- Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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Williams AE, Chambers RC. The mercurial nature of neutrophils: still an enigma in ARDS? Am J Physiol Lung Cell Mol Physiol 2013; 306:L217-30. [PMID: 24318116 DOI: 10.1152/ajplung.00311.2013] [Citation(s) in RCA: 287] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The acute respiratory distress syndrome (ARDS) is a life-threatening lung condition resulting from direct and indirect insults to the lung. It is characterized by disruption of the endothelial-epithelial barrier, alveolar damage, pulmonary edema, and respiratory failure. A key feature of ARDS is the accumulation of neutrophils in the lung microvasculature, interstitium, and alveolar space. Despite a clear association between neutrophil influx into the lung and disease severity, there is some debate as to whether neutrophils directly contribute to disease pathogenesis. The primary function of neutrophils is to provide immediate host defense against pathogenic microorganisms. Neutrophils release numerous antimicrobial factors such as reactive oxygen species, proteinases, and neutrophil extracellular traps. However, these factors are also toxic to host cells and can result in bystander tissue damage. The excessive accumulation of neutrophils in ARDS may therefore contribute to disease progression. Central to neutrophil recruitment is the release of chemokines, including the archetypal neutrophil chemoattractant IL-8, from resident pulmonary cells. However, the chemokine network in the inflamed lung is complex and may involve several other chemokines, including CXCL10, CCL2, and CCL7. This review will therefore focus on the experimental and clinical evidence supporting neutrophils as key players in ARDS and the chemokines involved in recruiting them into the lung.
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Affiliation(s)
- Andrew E Williams
- Centre for Inflammation and Tissue Repair, Univ. College London, Rayne Institute, 5 Univ. St., London WC1E 6JF, UK.
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Bachelerie F, Ben-Baruch A, Burkhardt AM, Combadiere C, Farber JM, Graham GJ, Horuk R, Sparre-Ulrich AH, Locati M, Luster AD, Mantovani A, Matsushima K, Murphy PM, Nibbs R, Nomiyama H, Power CA, Proudfoot AEI, Rosenkilde MM, Rot A, Sozzani S, Thelen M, Yoshie O, Zlotnik A. International Union of Basic and Clinical Pharmacology. [corrected]. LXXXIX. Update on the extended family of chemokine receptors and introducing a new nomenclature for atypical chemokine receptors. Pharmacol Rev 2013; 66:1-79. [PMID: 24218476 DOI: 10.1124/pr.113.007724] [Citation(s) in RCA: 653] [Impact Index Per Article: 59.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Sixteen years ago, the Nomenclature Committee of the International Union of Pharmacology approved a system for naming human seven-transmembrane (7TM) G protein-coupled chemokine receptors, the large family of leukocyte chemoattractant receptors that regulates immune system development and function, in large part by mediating leukocyte trafficking. This was announced in Pharmacological Reviews in a major overview of the first decade of research in this field [Murphy PM, Baggiolini M, Charo IF, Hébert CA, Horuk R, Matsushima K, Miller LH, Oppenheim JJ, and Power CA (2000) Pharmacol Rev 52:145-176]. Since then, several new receptors have been discovered, and major advances have been made for the others in many areas, including structural biology, signal transduction mechanisms, biology, and pharmacology. New and diverse roles have been identified in infection, immunity, inflammation, development, cancer, and other areas. The first two drugs acting at chemokine receptors have been approved by the U.S. Food and Drug Administration (FDA), maraviroc targeting CCR5 in human immunodeficiency virus (HIV)/AIDS, and plerixafor targeting CXCR4 for stem cell mobilization for transplantation in cancer, and other candidates are now undergoing pivotal clinical trials for diverse disease indications. In addition, a subfamily of atypical chemokine receptors has emerged that may signal through arrestins instead of G proteins to act as chemokine scavengers, and many microbial and invertebrate G protein-coupled chemokine receptors and soluble chemokine-binding proteins have been described. Here, we review this extended family of chemokine receptors and chemokine-binding proteins at the basic, translational, and clinical levels, including an update on drug development. We also introduce a new nomenclature for atypical chemokine receptors with the stem ACKR (atypical chemokine receptor) approved by the Nomenclature Committee of the International Union of Pharmacology and the Human Genome Nomenclature Committee.
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Affiliation(s)
- Francoise Bachelerie
- Chair, Subcommittee on Chemokine Receptors, Nomenclature Committee-International Union of Pharmacology, Bldg. 10, Room 11N113, NIH, Bethesda, MD 20892.
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14
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Zhao X, Zhang W, Xing D, Li P, Fu J, Gong K, Hage FG, Oparil S, Chen YF. Endothelial cells overexpressing IL-8 receptor reduce cardiac remodeling and dysfunction following myocardial infarction. Am J Physiol Heart Circ Physiol 2013; 305:H590-8. [PMID: 23771691 PMCID: PMC3891247 DOI: 10.1152/ajpheart.00571.2012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 06/13/2013] [Indexed: 02/03/2023]
Abstract
The endothelium is a dynamic component of the cardiovascular system that plays an important role in health and disease. This study tested the hypothesis that targeted delivery of endothelial cells (ECs) overexpressing neutrophil membrane IL-8 receptors IL8RA and IL8RB reduces acute myocardial infarction (MI)-induced left ventricular (LV) remodeling and dysfunction and increases neovascularization in the area at risk surrounding the infarcted tissue. MI was created by ligating the left anterior descending coronary artery in 12-wk-old male Sprague-Dawley rats. Four groups of rats were studied: group 1: sham-operated rats without MI or EC transfusion; group 2: MI rats with intravenous vehicle; group 3: MI rats with transfused ECs transduced with empty adenoviral vector (Null-EC); and group 4: MI rats with transfused ECs overexpressing IL8RA/RB (1.5 × 10⁶ cells post-MI). Two weeks after MI, LV function was assessed by echocardiography; infarct size was assessed by triphenyltetrazolium chloride (live tissue) and picrosirus red (collagen) staining, and capillary density and neutrophil infiltration in the area at risk were measured by CD31 and MPO immunohistochemical staining, respectively. When compared with the MI + vehicle and MI-Null-EC groups, transfusion of IL8RA/RB-ECs decreased neutrophil infiltration and pro-inflammatory cytokine expression and increased capillary density in the area at risk, decreased infarct size, and reduced MI-induced LV dysfunction. These findings provide proof of principle that targeted delivery of ECs is effective in repairing injured cardiac tissue. Targeted delivery of ECs to infarcted hearts provides a potential novel strategy for the treatment of acute MI in humans.
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MESH Headings
- Adenoviridae/genetics
- Animals
- Cells, Cultured
- Disease Models, Animal
- Endothelial Cells/immunology
- Endothelial Cells/metabolism
- Endothelial Cells/transplantation
- Genetic Therapy/methods
- Genetic Vectors
- Immunohistochemistry
- Inflammation Mediators/metabolism
- Male
- Myocardial Infarction/genetics
- Myocardial Infarction/immunology
- Myocardial Infarction/metabolism
- Myocardial Infarction/pathology
- Myocardial Infarction/physiopathology
- Myocardial Infarction/therapy
- Myocardium/immunology
- Myocardium/metabolism
- Myocardium/pathology
- Neovascularization, Physiologic
- Neutrophil Infiltration
- Rats
- Rats, Sprague-Dawley
- Receptors, Interleukin-8/biosynthesis
- Receptors, Interleukin-8/genetics
- Recombinant Fusion Proteins/biosynthesis
- Time Factors
- Transduction, Genetic
- Transfection
- Up-Regulation
- Ventricular Dysfunction, Left/genetics
- Ventricular Dysfunction, Left/immunology
- Ventricular Dysfunction, Left/metabolism
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Dysfunction, Left/prevention & control
- Ventricular Function, Left
- Ventricular Remodeling
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Affiliation(s)
- Xiangmin Zhao
- Vascular Biology and Hypertension Program, Division of Cardiovascular Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
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Ngkelo A, Adcock IM. New treatments for COPD. Curr Opin Pharmacol 2013; 13:362-9. [DOI: 10.1016/j.coph.2013.03.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/03/2013] [Accepted: 03/28/2013] [Indexed: 12/20/2022]
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16
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Han X, Tachado SD, Koziel H, Boisvert WA. Leu128(3.43) (l128) and Val247(6.40) (V247) of CXCR1 are critical amino acid residues for g protein coupling and receptor activation. PLoS One 2012; 7:e42765. [PMID: 22936990 PMCID: PMC3427349 DOI: 10.1371/journal.pone.0042765] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 07/10/2012] [Indexed: 12/25/2022] Open
Abstract
CXCR1, a classic GPCR that binds IL-8, plays a key role in neutrophil activation and migration by activating phospholipase C (PLC)β through Gα15 and Gαi which generates diacylglycerol and inositol phosphates (IPs). In this study, two conserved amino acid residues of CXCR1 on the transmembrane domain (TM) 3 and TM6, Leu1283.43 (L128) and Val2476.40 (V247), respectively, were selectively substituted with other amino acids to investigate the role of these conserved residues in CXCR1 activation. Although two selective mutants on Leu128, Leu128Ala (L128A) and Leu128Arg (L128R), demonstrated high binding affinity to IL-8, they were not capable of coupling to G proteins and consequently lost the functional response of the receptors. By contrast, among the four mutants at residue Val247 (TM6.40), replacing Val247 with Ala (V247A) and Asn (V247N) led to constitutive activation of mutant receptors when cotransfected with Gα15. The V247N mutant also constitutively activated the Gαi protein. These results indicate that L128 on TM3.43 is involved in G protein coupling and receptor activation but is unimportant for ligand binding. On the other hand, V247 on TM6.40 plays a critical role in maintaining the receptor in the inactive state, and the substitution of V247 impaired the receptor constraint and stabilized an active conformation. Functionally, there was an increase in chemotaxis in response to IL-8 in cells expressing V247A and V247N. Our findings indicate that Leu1283.43 and Val2476.40 are critical for G protein coupling and activation of signaling effectors, providing a valuable insight into the mechanism of CXCR1 activation.
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Affiliation(s)
- Xinbing Han
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Vascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, United States of America
- * E-mail: (XH); (WAB)
| | - Souvenir D. Tachado
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Henry Koziel
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - William A. Boisvert
- Department of Vascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, United States of America
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
- * E-mail: (XH); (WAB)
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