1
|
Shanmukha S, Godfrey WH, Gharibani P, Lee JJ, Guo Y, Deng X, Wender PA, Kornberg MD, Kim PM. TPPB modulates PKC activity to attenuate neuroinflammation and ameliorate experimental multiple sclerosis. Front Cell Neurosci 2024; 18:1373557. [PMID: 38841204 PMCID: PMC11150779 DOI: 10.3389/fncel.2024.1373557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/29/2024] [Indexed: 06/07/2024] Open
Abstract
Protein kinase C (PKC) plays a key role in modulating the activities of the innate immune cells of the central nervous system (CNS). A delicate balance between pro-inflammatory and regenerative activities by microglia and CNS-associated macrophages is necessary for the proper functioning of the CNS. Thus, a maladaptive activation of these CNS innate immune cells results in neurodegeneration and demyelination associated with various neurologic disorders, such as multiple sclerosis (MS) and Alzheimer's disease. Prior studies have demonstrated that modulation of PKC activity by bryostatin-1 (bryo-1) and its analogs (bryologs) attenuates the pro-inflammatory processes by microglia/CNS macrophages and alleviates the neurologic symptoms in experimental autoimmune encephalomyelitis (EAE), an MS animal model. Here, we demonstrate that (2S,5S)-(E,E)-8-(5-(4-(trifluoromethyl)phenyl)-2,4-pentadienoylamino)benzolactam (TPPB), a structurally distinct PKC modulator, has a similar effect to bryo-1 on CNS innate immune cells both in vitro and in vivo, attenuating neuroinflammation and resulting in CNS regeneration and repair. This study identifies a new structural class of PKC modulators, which can therapeutically target CNS innate immunity as a strategy to treat neuroinflammatory and neurodegenerative disorders.
Collapse
Affiliation(s)
- Shruthi Shanmukha
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Wesley H. Godfrey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Payam Gharibani
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Judy J. Lee
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Yu Guo
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Xiaojing Deng
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Paul A. Wender
- Departments of Chemistry and Chemical and Systems Biology, Stanford University, Stanford, CA, United States
| | - Michael D. Kornberg
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Paul M. Kim
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| |
Collapse
|
2
|
Shanmukha S, Godfrey WH, Gharibani P, Lee JJ, Guo Y, Deng X, Wender PA, Kornberg MD, Kim PM. TPPB modulates PKC activity to attenuate neuroinflammation and ameliorate experimental multiple sclerosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.02.578637. [PMID: 38370818 PMCID: PMC10871289 DOI: 10.1101/2024.02.02.578637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Protein kinase C (PKC) plays a key role in modulating the activities of the innate immune cells of the central nervous system (CNS). A delicate balance between pro-inflammatory and regenerative activities by microglia and CNS-associated macrophages is necessary for the proper functioning of the CNS. Thus, a maladaptive activation of these CNS innate immune cells results in neurodegeneration and demyelination associated with various neurologic disorders, such as multiple sclerosis (MS) and Alzheimer's disease. Prior studies have demonstrated that modulation of PKC activity by bryostatin-1 (bryo-1) and its analogs (bryologs) attenuates the pro-inflammatory processes by microglia/CNS macrophages and alleviates the neurologic symptoms in experimental autoimmune encephalomyelitis (EAE), an MS animal model. Here, we demonstrate that (2S,5S)-(E,E)-8-(5-(4(trifluoromethyl)phenyl)-2,4-pentadienoylamino)benzolactam (TPPB), a structurally distinct PKC modulator, has a similar effect to bryo-1 on CNS innate immune cells both in vitro and in vivo, attenuating neuroinflammation and resulting in CNS regeneration and repair. This study identifies a new structural class of PKC modulators, which can therapeutically target CNS innate immunity as a strategy to treat neuroinflammatory and neurodegenerative disorders.
Collapse
Affiliation(s)
- Shruthi Shanmukha
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| | - Wesley H. Godfrey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| | - Payam Gharibani
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| | - Judy J. Lee
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| | - Yu Guo
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine; Baltimore, Maryland, 21287, USA
| | - Xiaojing Deng
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| | - Paul A. Wender
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, California, 94305, USA
| | - Michael D. Kornberg
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| | - Paul M. Kim
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
| |
Collapse
|
3
|
Fernandes R, Barbosa-Matos C, Borges-Pereira C, de Carvalho ALRT, Costa S. Glycogen Synthase Kinase-3 Inhibition by CHIR99021 Promotes Alveolar Epithelial Cell Proliferation and Lung Regeneration in the Lipopolysaccharide-Induced Acute Lung Injury Mouse Model. Int J Mol Sci 2024; 25:1279. [PMID: 38279281 PMCID: PMC10816825 DOI: 10.3390/ijms25021279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a life-threatening lung injury that currently lacks effective clinical treatments. Evidence highlights the potential role of glycogen synthase kinase-3 (GSK-3) inhibition in mitigating severe inflammation. The inhibition of GSK-3α/β by CHIR99021 promoted fetal lung progenitor proliferation and maturation of alveolar epithelial cells (AECs). The precise impact of CHIR99021 in lung repair and regeneration during acute lung injury (ALI) remains unexplored. This study intends to elucidate the influence of CHIR99021 on AEC behaviour during the peak of the inflammatory phase of ALI and, after its attenuation, during the repair and regeneration stage. Furthermore, a long-term evaluation was conducted post CHIR99021 treatment at a late phase of the disease. Our results disclosed the role of GSK-3α/β inhibition in promoting AECI and AECII proliferation. Later administration of CHIR99021 during ALI progression contributed to the transdifferentiation of AECII into AECI and an AECI/AECII increase, suggesting its contribution to the renewal of the alveolar epithelial population and lung regeneration. This effect was confirmed to be maintained histologically in the long term. These findings underscore the potential of targeted therapies that modulate GSK-3α/β inhibition, offering innovative approaches for managing acute lung diseases, mostly in later stages where no treatment is available.
Collapse
Affiliation(s)
- Raquel Fernandes
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (R.F.); (C.B.-M.); (C.B.-P.)
- ICVS/3B’s—PT Government Associate Laboratory, 4806-909 Braga, Portugal
| | - Catarina Barbosa-Matos
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (R.F.); (C.B.-M.); (C.B.-P.)
- ICVS/3B’s—PT Government Associate Laboratory, 4806-909 Braga, Portugal
| | - Caroline Borges-Pereira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (R.F.); (C.B.-M.); (C.B.-P.)
- ICVS/3B’s—PT Government Associate Laboratory, 4806-909 Braga, Portugal
| | - Ana Luísa Rodrigues Toste de Carvalho
- Department of Internal Medicine, São João Universitary Hospital Center, 4200-319 Porto, Portugal;
- Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Sandra Costa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (R.F.); (C.B.-M.); (C.B.-P.)
- ICVS/3B’s—PT Government Associate Laboratory, 4806-909 Braga, Portugal
| |
Collapse
|
4
|
Black JD, Affandi T, Black AR, Reyland ME. PKCα and PKCδ: Friends and Rivals. J Biol Chem 2022; 298:102194. [PMID: 35760100 PMCID: PMC9352922 DOI: 10.1016/j.jbc.2022.102194] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/13/2022] [Accepted: 06/21/2022] [Indexed: 01/06/2023] Open
Abstract
PKC comprises a large family of serine/threonine kinases that share a requirement for allosteric activation by lipids. While PKC isoforms have significant homology, functional divergence is evident among subfamilies and between individual PKC isoforms within a subfamily. Here, we highlight these differences by comparing the regulation and function of representative PKC isoforms from the conventional (PKCα) and novel (PKCδ) subfamilies. We discuss how unique structural features of PKCα and PKCδ underlie differences in activation and highlight the similar, divergent, and even opposing biological functions of these kinases. We also consider how PKCα and PKCδ can contribute to pathophysiological conditions and discuss challenges to targeting these kinases therapeutically.
Collapse
Affiliation(s)
- Jennifer D Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE.
| | - Trisiani Affandi
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus
| | - Adrian R Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE
| | - Mary E Reyland
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus.
| |
Collapse
|
5
|
Targeting PKC in microglia to promote remyelination and repair in the CNS. Curr Opin Pharmacol 2021; 62:103-108. [PMID: 34965482 DOI: 10.1016/j.coph.2021.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/19/2021] [Indexed: 01/28/2023]
Abstract
Microglia and CNS-infiltrating macrophages play significant roles in the pathogenesis of neuroinflammatory and neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and multiple sclerosis. Prolonged and dysregulated inflammatory responses by these innate immune cells can have deleterious effects on the surrounding CNS microenvironment, which can worsen neurodegeneration and demyelination. However, although chronic activation of pro-inflammatory microglia is maladaptive, other functional microglial subtypes play beneficial roles during CNS repair and regeneration. Therefore, there is a tremendous interest in understanding the underlying mechanism of the activation of these reparative/regenerative microglia. In this review, we focus on the potential role of PKC, a downstream signaling molecule of TREM2 and PLCγ2, and PKC modulators in promoting the activation of reparative/regenerative microglial subtypes as a novel therapy for neuroinflammatory and neurodegenerative diseases.
Collapse
|
6
|
Calcium Dobesilate Modulates PKCδ-NADPH Oxidase- MAPK-NF-κB Signaling Pathway to Reduce CD14, TLR4, and MMP9 Expression during Monocyte-to-Macrophage Differentiation: Potential Therapeutic Implications for Atherosclerosis. Antioxidants (Basel) 2021; 10:antiox10111798. [PMID: 34829669 PMCID: PMC8615002 DOI: 10.3390/antiox10111798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 11/08/2021] [Indexed: 01/18/2023] Open
Abstract
Monocyte-to-macrophage differentiation results in the secretion of various inflammatory mediators and oxidative stress molecules necessary for atherosclerosis pathogenesis. Consequently, this differentiation represents a potential clinical target in atherosclerosis. Calcium dobesilate (CaD), an established vasoactive and angioprotective drug in experimental models of diabetic microvascular complications reduces oxidative stress and inhibits inflammation via diverse molecular targets; however, its effect on monocytes/macrophages is poorly understood. In this study, we investigated the anti-inflammatory mechanism of CaD during phorbol 12-myristate 13-acetate (PMA)-induced monocyte-to-macrophage differentiation in in vitro models of sepsis (LPS) and hyperglycemia, using THP-1 monocytic cell line. CaD significantly suppressed CD14, TLR4, and MMP9 expression and activity, lowering pro-inflammatory mediators, such as IL1β, TNFα, and MCP-1. The effects of CaD translated through to studies on primary human macrophages. CaD inhibited reactive oxygen species (ROS) generation, PKCδ, MAPK (ERK1/2 and p38) phosphorylation, NOX2/p47phox expression, and membrane translocation. We used hydrogen peroxide (H2O2) to mimic oxidative stress, demonstrating that CaD suppressed PKCδ activation via its ROS-scavenging properties. Taken together, we demonstrate for the first time that CaD suppresses CD14, TLR4, MMP9, and signature pro-inflammatory cytokines, in human macrophages, via the downregulation of PKCδ/NADPH oxidase/ROS/MAPK/NF-κB-dependent signaling pathways. Our data present novel mechanisms of how CaD alleviates metabolic and infectious inflammation.
Collapse
|
7
|
Masmoudi-Kouki O, Namsi A, Hamdi Y, Bahdoudi S, Ghouili I, Chuquet J, Leprince J, Lefranc B, Ghrairi T, Tonon MC, Lizard G, Vaudry D. Cytoprotective and Neurotrophic Effects of Octadecaneuropeptide (ODN) in in vitro and in vivo Models of Neurodegenerative Diseases. Front Endocrinol (Lausanne) 2020; 11:566026. [PMID: 33250858 PMCID: PMC7672186 DOI: 10.3389/fendo.2020.566026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/28/2020] [Indexed: 11/13/2022] Open
Abstract
Octadecaneuropeptide (ODN) and its precursor diazepam-binding inhibitor (DBI) are peptides belonging to the family of endozepines. Endozepines are exclusively produced by astroglial cells in the central nervous system of mammals, and their release is regulated by stress signals and neuroactive compounds. There is now compelling evidence that the gliopeptide ODN protects cultured neurons and astrocytes from apoptotic cell death induced by various neurotoxic agents. In vivo, ODN causes a very strong neuroprotective action against neuronal degeneration in a mouse model of Parkinson's disease. The neuroprotective activity of ODN is based on its capacity to reduce inflammation, apoptosis, and oxidative stress. The protective effects of ODN are mediated through its metabotropic receptor. This receptor activates a transduction cascade of second messengers to stimulate protein kinase A (PKA), protein kinase C (PKC), and mitogen-activated protein kinase (MAPK)-extracellular signal-regulated kinase (ERK) signaling pathways, which in turn inhibits the expression of proapoptotic factor Bax and the mitochondrial apoptotic pathway. In N2a cells, ODN also promotes survival and stimulates neurite outgrowth. During the ODN-induced neuronal differentiation process, numerous mitochondria and peroxisomes are identified in the neurites and an increase in the amount of cholesterol and fatty acids is observed. The antiapoptotic and neurotrophic properties of ODN, including its antioxidant, antiapoptotic, and pro-differentiating effects, suggest that this gliopeptide and some of its selective and stable derivatives may have therapeutic value for the treatment of some neurodegenerative diseases.
Collapse
Affiliation(s)
- Olfa Masmoudi-Kouki
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Amira Namsi
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis, Tunisia
- Team Bio-PeroxIL, Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism/University Bourgogne Franche-Comté (UBFC)/Inserm, Dijon, France
| | - Yosra Hamdi
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Seyma Bahdoudi
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis, Tunisia
- Normandy University, Neuronal and Neuroendocrine Differentiation and Communication, Inserm U1239, Rouen, France
| | - Ikram Ghouili
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Julien Chuquet
- Normandy University, Neuronal and Neuroendocrine Differentiation and Communication, Inserm U1239, Rouen, France
| | - Jérôme Leprince
- Normandy University, Neuronal and Neuroendocrine Differentiation and Communication, Inserm U1239, Rouen, France
- Normandy University, Regional Platform for Cell Imaging of Normandy (PRIMACEN), Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Benjamin Lefranc
- Normandy University, Neuronal and Neuroendocrine Differentiation and Communication, Inserm U1239, Rouen, France
- Normandy University, Regional Platform for Cell Imaging of Normandy (PRIMACEN), Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Taoufik Ghrairi
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Marie-Christine Tonon
- Normandy University, Neuronal and Neuroendocrine Differentiation and Communication, Inserm U1239, Rouen, France
| | - Gérard Lizard
- Team Bio-PeroxIL, Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism/University Bourgogne Franche-Comté (UBFC)/Inserm, Dijon, France
| | - David Vaudry
- Normandy University, Neuronal and Neuroendocrine Differentiation and Communication, Inserm U1239, Rouen, France
- Normandy University, Regional Platform for Cell Imaging of Normandy (PRIMACEN), Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| |
Collapse
|
8
|
Isoorientin Inhibits Inflammation in Macrophages and Endotoxemia Mice by Regulating Glycogen Synthase Kinase 3 β. Mediators Inflamm 2020; 2020:8704146. [PMID: 33192176 PMCID: PMC7641714 DOI: 10.1155/2020/8704146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/01/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023] Open
Abstract
Isoorientin has anti-inflammatory effects; however, the mechanism remains unclear. We previously found isoorientin is an inhibitor of glycogen synthase kinase 3β (GSK3β) in vitro. Overactivation of GSK3β is associated with inflammatory responses. GSK3β is inactivated by phosphorylation at Ser9 (i.e., p-GSK3β). Lithium chloride (LiCl) inhibits GSK3β and also increases p-GSK3β (Ser9). The present study investigated the anti-inflammatory effect and mechanism of isoorientin via GSK3β regulation in lipopolysaccharide- (LPS-) induced RAW264.7 murine macrophage-like cells and endotoxemia mice. LiCl was used as a control. While AKT phosphorylates GSK3β, MK-2206, a selective AKT inhibitor, was used to activate GSK3β via AKT inhibition (i.e., not phosphorylate GSK3β at Ser9). The proinflammatory cytokines TNF-α, IL-6, and IL-1β were detected by ELISA or quantitative real-time PCR, while COX-2 by Western blotting. The p-GSK3β and GSK3β downstream signal molecules, including NF-κB, ERK, Nrf2, and HO-1, as well as the tight junction proteins ZO-1 and occludin were measured by Western blotting. The results showed that isoorientin decreased the production of TNF-α, IL-6, and IL-1β and increased the expression of p-GSK3β in vitro and in vivo, similar to LiCl. Coadministration of isoorientin and LiCl showed antagonistic effects. Isoorientin decreased the expression of COX-2, inhibited the activation of ERK and NF-κB, and increased the activation of Nrf2/HO-1 in LPS-induced RAW264.7 cells. Isoorientin increased the expressions of occludin and ZO-1 in the brain of endotoxemia mice. In summary, isoorientin can inhibit GSK3β by increasing p-GSK3β and regulate the downstream signal molecules to inhibit inflammation and protect the integrity of the blood-brain barrier and the homeostasis in the brain.
Collapse
|
9
|
The role of glycogen synthase kinase 3 beta in multiple sclerosis. Biomed Pharmacother 2020; 132:110874. [PMID: 33080467 DOI: 10.1016/j.biopha.2020.110874] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS) that leads to progressive neurological disability due to axonal deterioration. Although MS presents profound heterogeneity in the clinical course, its underlying central mechanism is active demyelination and neurodegeneration associated with inflammation. Multiple autoimmune and neuroinflammatory pathways are involved in the demyelination process of MS. Analysis of MS lesions has shown that inflammatory genes are upregulated. Glycogen synthase kinase-3 (GSK-3) is part of the mitogen-activated protein kinase (MAPK) family and has important roles in many signaling cascades. GSK-3 is a highly conserved serine/threonine protein kinase expressed in both the central and the peripheral nervous systems. GSK-3 modulates several biological processes through phosphorylation of protein kinases, including cell signaling, neuronal growth, apoptosis and production of pro-inflammatory cytokines and interleukins, allowing adaptive changes in events such as cellular proliferation, migration, inflammation, and immunity. GSK-3 occurs in mammals in two isoforms GSK-3α and GSK-3β, both of which are common in the brain, although GSK-3α is found particularly in the cerebral cortex, cerebellum, striated hippocampus and Purkinje cells, while GSK-3β is found in all brain regions. In patients with chronic progressive MS, expression of GSK-3β is elevated in several brain regions such as the corpus callosum and cerebral cortex. GSK-3β inhibition may play a role in glial cell activation, reducing pathological pain induced by nerve injury by formalin injection. According to the role of GSK-3β in pathological conditions, the aim of this article is review of the role of GSK-3β in multiple sclerosis and inflammation of neurons.
Collapse
|
10
|
Noori MS, Courreges MC, Bergmeier SC, McCall KD, Goetz DJ. Modulation of LPS-induced inflammatory cytokine production by a novel glycogen synthase kinase-3 inhibitor. Eur J Pharmacol 2020; 883:173340. [PMID: 32634441 PMCID: PMC7334664 DOI: 10.1016/j.ejphar.2020.173340] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 12/21/2022]
Abstract
Sepsis is a serious condition that can lead to long-term organ damage and death. At the molecular level, the hallmark of sepsis is the elevated expression of a multitude of potent cytokines, i.e. a cytokine storm. For sepsis involving gram-negative bacteria, macrophages recognize lipopolysaccharide (LPS) shed from the bacteria, activating Toll-like-receptor 4 (TLR4), and triggering a cytokine storm. Glycogen synthase kinase-3 (GSK-3) is a highly active kinase that has been implicated in LPS-induced cytokine production. Thus, compounds that inhibit GSK-3 could be potential therapeutics for sepsis. Our group has recently described a novel and highly selective inhibitor of GSK-3 termed COB-187. In the present study, using THP-1 macrophages, we evaluated the ability of COB-187 to attenuate LPS-induced cytokine production. We found that COB-187 significantly reduced, at the protein and mRNA levels, cytokines induced by LPS (e.g. IL-6, TNF-α, IL-1β, CXCL10, and IFN-β). Further, the data suggest that the inhibition could be due, at least in part, to COB-187 reducing NF-κB (p65/p50) DNA binding activity as well as reducing IRF-3 phosphorylation at Serine 396. Thus, COB-187 appears to be a potent inhibitor of the cytokine storm induced by LPS.
Collapse
Affiliation(s)
- Mahboubeh S Noori
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, 45701, USA.
| | - Maria C Courreges
- Department of Specialty Medicine, Ohio University, Athens, OH, 45701, USA
| | - Stephen C Bergmeier
- Biomedical Engineering Program, Ohio University, Athens, OH, 45701, USA; Department of Chemistry and Biochemistry, Ohio University, Athens, OH, 45701, USA
| | - Kelly D McCall
- Department of Specialty Medicine, Ohio University, Athens, OH, 45701, USA; Biomedical Engineering Program, Ohio University, Athens, OH, 45701, USA; The Diabetes Institute, Ohio University, Athens, OH, 45701, USA; Molecular and Cellular Biology Program, Ohio University, Athens, OH, 45701, USA; Translational Biomedical Science Program, Ohio University, Athens, OH, 45701, USA
| | - Douglas J Goetz
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, 45701, USA; Biomedical Engineering Program, Ohio University, Athens, OH, 45701, USA.
| |
Collapse
|
11
|
Zhang J, Qu C, Li T, Cui W, Wang X, Du J. Phagocytosis mediated by scavenger receptor class BI promotes macrophage transition during skeletal muscle regeneration. J Biol Chem 2019; 294:15672-15685. [PMID: 31462534 PMCID: PMC6816089 DOI: 10.1074/jbc.ra119.008795] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 08/19/2019] [Indexed: 02/05/2023] Open
Abstract
Macrophages play an essential role in skeletal muscle regeneration. The phagocytosis of muscle cell debris induces a switch of pro-inflammatory macrophages into an anti-inflammatory phenotype, but the cellular receptors mediating this phagocytosis are still unclear. In this paper, we report novel roles for SRB1 (scavenger receptor class BI) in regulating macrophage phagocytosis and macrophage phenotypic transitions for skeletal muscle regeneration. In a mouse model of cardiotoxin-induced muscle injury/regeneration, infiltrated macrophages expressed a high level of SRB1. Using SRB1 knockout mice, we observed the impairment of muscle regeneration along with decreased myogenin expression and increased matrix deposit. Bone marrow transplantation experiments indicated that SRB1 deficiency in bone marrow cells was responsible for impaired muscle regeneration. Compared with WT mice, SRB1 deficiency increased pro-inflammatory macrophage number and pro-inflammatory gene expression and decreased anti-inflammatory macrophage number and anti-inflammatory gene expression in injured muscle. In vitro, SRB1 deficiency led to a strong decrease in macrophage phagocytic activity on myoblast debris. SRB1-deficient macrophages easily acquired an M1 phenotype and failed to acquire an M2 phenotype in lipopolysaccharide/myoblast debris activation. Furthermore, SRB1 deficiency promoted activation of ERK1/2 MAPK signaling in macrophages stimulated with lipopolysaccharide/myoblast debris. Taken together, SRB1 in macrophages regulates phagocytosis and promotes M1 switch into M2 macrophages, contributing to muscle regeneration.
Collapse
Affiliation(s)
- Jing Zhang
- Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China,Key Laboratory of Remodeling-related Cardiovascular Diseases, Ministry of Education, Beijing 100029, China
| | - Chao Qu
- Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China,Key Laboratory of Remodeling-related Cardiovascular Diseases, Ministry of Education, Beijing 100029, China
| | - Taotao Li
- Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China,Key Laboratory of Remodeling-related Cardiovascular Diseases, Ministry of Education, Beijing 100029, China
| | - Wei Cui
- Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China,Key Laboratory of Remodeling-related Cardiovascular Diseases, Ministry of Education, Beijing 100029, China
| | - Xiaonan Wang
- Renal Division, Department of Medicine, Emory University, Atlanta, Georgia 30322, To whom correspondence may be addressed. E-mail:
| | - Jie Du
- Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China,Key Laboratory of Remodeling-related Cardiovascular Diseases, Ministry of Education, Beijing 100029, China, To whom correspondence may be addressed. E-mail:
| |
Collapse
|
12
|
Namsi A, Nury T, Khan AS, Leprince J, Vaudry D, Caccia C, Leoni V, Atanasov AG, Tonon MC, Masmoudi-Kouki O, Lizard G. Octadecaneuropeptide (ODN) Induces N2a Cells Differentiation through a PKA/PLC/PKC/MEK/ERK-Dependent Pathway: Incidence on Peroxisome, Mitochondria, and Lipid Profiles. Molecules 2019; 24:molecules24183310. [PMID: 31514417 PMCID: PMC6767053 DOI: 10.3390/molecules24183310] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/28/2019] [Accepted: 09/05/2019] [Indexed: 12/29/2022] Open
Abstract
Neurodegenerative diseases are characterized by oxidative stress, mitochondrial damage, and death of neuronal cells. To counteract such damage and to favor neurogenesis, neurotrophic factors could be used as therapeutic agents. Octadecaneuropeptide (ODN), produced by astrocytes, is a potent neuroprotective agent. In N2a cells, we studied the ability of ODN to promote neuronal differentiation. This parameter was evaluated by phase contrast microscopy, staining with crystal violet, cresyl blue, and Sulforhodamine 101. The effect of ODN on cell viability and mitochondrial activity was determined with fluorescein diacetate and DiOC6(3), respectively. The impact of ODN on the topography of mitochondria and peroxisomes, two tightly connected organelles involved in nerve cell functions and lipid metabolism, was evaluated by transmission electron microscopy and fluorescence microscopy: detection of mitochondria with MitoTracker Red, and peroxisome with an antibody directed against the ABCD3 peroxisomal transporter. The profiles in fatty acids, cholesterol, and cholesterol precursors were determined by gas chromatography, in some cases coupled with mass spectrometry. Treatment of N2a cells with ODN (10-14 M, 48 h) induces neurite outgrowth. ODN-induced neuronal differentiation was associated with modification of topographical distribution of mitochondria and peroxisomes throughout the neurites and did not affect cell viability and mitochondrial activity. The inhibition of ODN-induced N2a differentiation with H89, U73122, chelerythrine and U0126 supports the activation of a PKA/PLC/PKC/MEK/ERK-dependent signaling pathway. Although there is no difference in fatty acid profile between control and ODN-treated cells, the level of cholesterol and some of its precursors (lanosterol, desmosterol, lathosterol) was increased in ODN-treated cells. The ability of ODN to induce neuronal differentiation without cytotoxicity reinforces the interest for this neuropeptide with neurotrophic properties to overcome nerve cell damage in major neurodegenerative diseases.
Collapse
Affiliation(s)
- Amira Namsi
- Team Bio-PeroxIL, Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism (EA7270)/University Bourgogne Franche-Comté (UBFC)/Inserm, 21000 Dijon, France.
- Faculty of Science of Tunis, University Tunis El Manar, LR18ES03, Laboratory of Neurophysiology, Cellular Physiopathology and Biomolecules Valorisation, Tunis 2092, Tunisia.
| | - Thomas Nury
- Team Bio-PeroxIL, Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism (EA7270)/University Bourgogne Franche-Comté (UBFC)/Inserm, 21000 Dijon, France.
| | - Amira S Khan
- Physiology of Nutrition & Toxicology (NUTox), Inserm U1231, University UBFC, 21000 Dijon, France.
| | - Jérôme Leprince
- UNIROUEN, Inserm U1239, Laboratory of Neuronal and Neuroendocrine Communication and Differentiation, Normandie University, 76000 Rouen, France.
- UNIROUEN, Regional Cell Imaging Platform of Normandy (PRIMACEN), Normandie University, 76000 Rouen, France.
| | - David Vaudry
- UNIROUEN, Inserm U1239, Laboratory of Neuronal and Neuroendocrine Communication and Differentiation, Normandie University, 76000 Rouen, France.
- UNIROUEN, Regional Cell Imaging Platform of Normandy (PRIMACEN), Normandie University, 76000 Rouen, France.
| | - Claudio Caccia
- Laboratory of Medical Genetics and Neurogenetics, Foundation IRCCS Istituto Neurologico Carlo Besta, 20100 Milan, Italy.
| | - Valerio Leoni
- Laboratory of Clinical Chemistry, Hospital of Varese, ASST-Settelaghi, 20100 Milan, Italy.
| | - Atanas G Atanasov
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Jastrzebiec, 05-552 Magdalenka, Poland.
- Department of Pharmacognosy, University of Vienna, 1010 Vienna, Austria.
- Institute of Neurobiology, Bulgarian Academy of Sciences, 23 Acad. G. Bonchev str., 1113 Sofia, Bulgaria.
| | - Marie-Christine Tonon
- UNIROUEN, Inserm U1239, Laboratory of Neuronal and Neuroendocrine Communication and Differentiation, Normandie University, 76000 Rouen, France.
| | - Olfa Masmoudi-Kouki
- Faculty of Science of Tunis, University Tunis El Manar, LR18ES03, Laboratory of Neurophysiology, Cellular Physiopathology and Biomolecules Valorisation, Tunis 2092, Tunisia.
| | - Gérard Lizard
- Team Bio-PeroxIL, Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism (EA7270)/University Bourgogne Franche-Comté (UBFC)/Inserm, 21000 Dijon, France.
| |
Collapse
|
13
|
Calcitriol alleviates global cerebral ischemia-induced cognitive impairment by reducing apoptosis regulated by VDR/ERK signaling pathway in rat hippocampus. Brain Res 2019; 1724:146430. [PMID: 31479649 DOI: 10.1016/j.brainres.2019.146430] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Vitamin D (VD) has important neuroprotective functions in the central nervous system. However, further exploration is still needed in the neuroprotective effects of VD monomer therapy on global cerebral ischemia (GCI) and its potential molecular mechanism. OBJECTIVE To investigate whether calcitriol, a biologically active metabolite of VD, could alleviate cognitive impairment induced by GCI via reducing cell apoptosis and activating the extracellular signal-regulated kinase (ERK) signaling pathway. METHODS A total of 145 adult male Sprague Dawley rats were randomly divided into five groups: Sham group (n = 45), GCI group (n = 45), calcitriol treatment group (GCI + calcitriol, n = 45), PD98059 treatment group (n = 5) and vehicle group (n = 5). Morris water maze test was used for evaluating spatial learning and memory functions. Neurological Severity Score and wet-dry weight method were applied to detect neurological deficits and brain water content, respectively. Hematoxylin and eosin staining, transmission electron microscopy, and terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end-labeling staining were performed for evaluating the changes of hippocampal CA1 neurons. Immunocytochemistry, immunofluorescence chemistry, and western blot analysis were performed for evaluating the changes of related proteins. RESULTS Calcitriol significantly ameliorated the spatial learning and memory impairments, improved neurological function, attenuated brain edema, and improved the morphological defects in the CA1 area of the hippocampus. Besides, calcitriol reduced GCI-induced cell apoptosis and reversed the up-regulation of pro-apoptotic proteins (Caspase-3 and Bax) and the down-regulation of anti-apoptotic protein (Bcl-2). Furthermore, calcitriol also increased the expression of VD receptors (VDR) and activated the ERK signaling pathway. Moreover, the p-ERK1/2 inhibitor PD98059 reversed the effect of calcitriol on the expression of apoptosis-related proteins. CONCLUSIONS Calcitriol may have a protective effect against GCI-induced cognitive impairments via inhibition of apoptotic cascade by activating the VDR/ERK signaling pathway.
Collapse
|
14
|
Bressan AF, Fonseca GA, Tostes RC, Webb RC, Lima VV, Giachini FR. Interleukin-10 negatively modulates extracellular signal-regulated kinases 1 and 2 in aorta from hypertensive mouse induced by angiotensin II infusion. Fundam Clin Pharmacol 2019; 33:31-40. [PMID: 30144156 PMCID: PMC6816245 DOI: 10.1111/fcp.12409] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/27/2018] [Accepted: 08/21/2018] [Indexed: 02/06/2023]
Abstract
The activation of extracellular signal-regulated kinase 1 and 2 (ERK 1/2) pathway promotes increased vascular contractility in angiotensin II (Ang II)-induced hypertensive mice. Interleukin-10 (IL-10) is an immune-regulatory cytokine with the ability to prevent vascular hypercontractility during hypertension. We hypothesized that IL-10 would downregulate vascular ERK 1/2 activation during Ang II-induced hypertension. Wild-type (WT) or IL-10 knockout (IL-10-/- ) mice received Ang II infusion (90 ηg.min) or vehicle (saline), via osmotic mini-pumps (0.25 μL/h for 14 days), whereas another WT group were infused with exogenous IL-10 (0.5 ηg/min, 14 days) simultaneously, or not, with Ang II. Aortic rings were mounted in a myograph, and concentration-response curves to phenylephrine were evaluated, in the presence or absence of ERK 1/2 inhibitor (PD98059, 10 μm, 40 min). Protein expression of vascular ERK 1/2 was determined by Western blot. Ang II infusion increased the maximal contractile response in both WT and IL-10-/- mice. Concomitant infusion of IL-10 and Ang II prevented hypercontractility in the vasculature. Exogenous IL-10 infusion prevented ERK 1/2 activation and hypercontractility, induced by Ang II. These findings suggest that IL-10 negatively modulates ERK 1/2 activation and prevents hypercontractility during Ang II-induced hypertension.
Collapse
Affiliation(s)
- Alecsander F. Bressan
- Institute of Biological and Health Sciences, Federal University of Mato Grosso, Barra do Garças, MT, Brazil
| | - Gisele A. Fonseca
- Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Goiás (UFG), Goiânia, GO, Brazil
| | - Rita C. Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - R. Clinton Webb
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Victor Vitorino Lima
- Institute of Biological and Health Sciences, Federal University of Mato Grosso, Barra do Garças, MT, Brazil
| | - Fernanda Regina Giachini
- Institute of Biological and Health Sciences, Federal University of Mato Grosso, Barra do Garças, MT, Brazil
- Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Goiás (UFG), Goiânia, GO, Brazil
| |
Collapse
|
15
|
Pal S, Nath P, Das D, Hajra S, Maitra S. Cross-talk between insulin signalling and LPS responses in mouse macrophages. Mol Cell Endocrinol 2018; 476:57-69. [PMID: 29715496 DOI: 10.1016/j.mce.2018.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/24/2018] [Accepted: 04/24/2018] [Indexed: 12/16/2022]
Abstract
The effect of insulin priming on Il-10 expression, regulation of inflammatory cytokines and participation of intra-cellular signalling events, primarily ERK1/2 and PI3K/Akt, has been investigated in high glucose (HG) and/or lipopolysaccharide (LPS)-induced murine macrophages. Our results demonstrate that congruent with sharp increase in ERK1/2 and CREB phosphorylation, insulin stimulation in vitro promotes significant increase in Il-10 expression in mouse peritoneal macrophage and RAW 264.7 cells, both positive for anti-IRβ. Pharmacological inhibition of MEK/MAPK, but not PI3K/Akt cascade, abrogates CREB phosphorylation and Il-10 synthesis indicating functional relevance of insulin action. Conversely, priming with PI3K inhibitor wortmannin prevents insulin attenuation of HG- and/or LPS-induced p38 MAPK and NF-κB activation, Tnf-α, Il-1β expression as well as NO production. Congruent with reduced Il-10 expression, MEK inhibition abrogates insulin action allowing significant increase in Tlr4 expression and LPS response indicating insulin-induced Il-10 might have pivotal influence in regulation of chronic as well as acute inflammatory response.
Collapse
Affiliation(s)
- Soumojit Pal
- Department of Zoology, Visva-Bharati University, Santiniketan 731235, India
| | - Poulomi Nath
- Department of Zoology, Visva-Bharati University, Santiniketan 731235, India
| | - Debabrata Das
- Department of Genetics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Sudip Hajra
- Department of Zoology, Visva-Bharati University, Santiniketan 731235, India
| | - Sudipta Maitra
- Department of Zoology, Visva-Bharati University, Santiniketan 731235, India.
| |
Collapse
|
16
|
Noh KT, Jung ID, Cha GS, Han MK, Park YM. Platelet-activating Factor Mediates Endotoxin Tolerance by Regulating Indoleamine 2,3-Dioxygenase-dependent Expression of the Suppressor of Cytokine Signaling 3. J Biol Chem 2017; 292:3290-3298. [PMID: 28077574 DOI: 10.1074/jbc.m116.764464] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 12/25/2016] [Indexed: 11/06/2022] Open
Abstract
Indoleamine 2,3-dioxygenase (IDO) mediates immune tolerance, and suppressor of cytokine signaling 3 (SOCS3) negatively regulates the JAK/STAT signal transduction pathway. We determined previously that platelet-activating factor (PAF) protects mice against LPS-induced endotoxic shock, but its detailed mechanism of action was unknown. We performed survival experiments in IDO+/+ and IDO-/- mice using an LPS-induced endotoxemia model and rated organ injury (neutrophil infiltration and liver function). Using ELISA and Western blotting, we also investigated the mechanism of PAF-mediated endotoxin tolerance during endotoxemia. PAF-mediated endotoxin tolerance was dependent on IDO in vivo and in vitro and was not observed in IDO-/- mice. JAK/STAT signaling, crucial for SOCS3 expression, was also impaired in the absence of IDO. In an IDO- and STAT-dependent manner, PAF mediated a decrease in IL-12 and a dramatic increase in IL-10 and reduced mouse mortality. In addition, PAF attenuated LPS-mediated neutrophil infiltration into the lungs and interactions between neutrophil-like (THP-1) and endothelial cells (human umbilical vein endothelial cells). These results indicate that PAF-mediated endotoxin tolerance is initiated via IDO- and JAK/STAT-dependent expression of SOCS3. Our study has revealed a novel tolerogenic mechanism of IDO action and an important association between IDO and SOCS3 with respect to endotoxin tolerance.
Collapse
Affiliation(s)
- Kyung Tae Noh
- Department of Infectious Diseases, Armed Forces Medical Research Institute, 90bun, Jaunro, Yuseong-gu, Daejeon 305-878, South Korea
| | - In Duk Jung
- Department of Immunology, College of Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Gil Sun Cha
- Department of Immunology, College of Medicine, Konkuk University, Seoul 143-701, South Korea
| | - Myung-Kwan Han
- Department of Microbiology, Chonbuk National University Medical School, Jeonju 561-182, South Korea.
| | - Yeong-Min Park
- Department of Immunology, College of Medicine, Konkuk University, Seoul 143-701, South Korea.
| |
Collapse
|
17
|
Hu Z, Hu S, Yang S, Chen M, Zhang P, Liu J, Abbott GW. Remote Liver Ischemic Preconditioning Protects against Sudden Cardiac Death via an ERK/GSK-3β-Dependent Mechanism. PLoS One 2016; 11:e0165123. [PMID: 27768739 PMCID: PMC5074543 DOI: 10.1371/journal.pone.0165123] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 10/06/2016] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Preconditioning stimuli conducted in remote organs can protect the heart against subsequent ischemic injury, but effects on arrhythmogenesis and sudden cardiac death (SCD) are unclear. Here, we investigated the effect of remote liver ischemia preconditioning (RLIPC) on ischemia/reperfusion (I/R)-induced cardiac arrhythmia and sudden cardiac death (SCD) in vivo, and determined the potential role of ERK/GSK-3βsignaling. METHODS/RESULTS Male Sprague Dawley rats were randomized to sham-operated, control, or RLIPC groups. RLIPC was induced by alternating four 5-minute cycles of liver ischemia with 5-minute intermittent reperfusions. To investigate I/R-induced arrhythmogenesis, hearts in each group were subsequently subjected to 5-minute left main coronary artery ligation followed by 20-minute reperfusion. RLIPC reduced post-I/R ventricular arrhythmias, and decreased the incidence of SCD >threefold. RLIPC increased phosphorylation of cardiac ERK1/2, and GSK-3β Ser9 but not Tyr216 post-I/R injury. Inhibition of either GSK-3β (with SB216763) or ERK1/2 (with U0126) abolished RLIPC-induced antiarrhythmic activity and GSK-3β Ser9 and ERK1/2 phosphorylation, leaving GSK-3β Tyr216 phosphorylation unchanged. CONCLUSIONS RLIPC exerts a powerful antiarrhythmic effect and reduces predisposition to post-IR SCD. The underlying mechanism of RLIPC cardioprotection against I/R-induced early arrhythmogenesis may involve ERK1/2/GSK-3β Ser9-dependent pathways.
Collapse
Affiliation(s)
- Zhaoyang Hu
- Laboratory of Anesthesiology & Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Sheng Hu
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shanxi, China
| | - Shuai Yang
- Laboratory of Anesthesiology & Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Mou Chen
- Laboratory of Anesthesiology & Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ping Zhang
- Laboratory of Anesthesiology & Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jin Liu
- Laboratory of Anesthesiology & Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- * E-mail: (GWA); (JL)
| | - Geoffrey W. Abbott
- Bioelectricity Laboratory, Dept. of Pharmacology and Dept. of Physiology and Biophysics, School of Medicine, University of California Irvine, Irvine, California, United States of America
- * E-mail: (GWA); (JL)
| |
Collapse
|
18
|
Noh KT, Cha GS, Kang TH, Cho J, Jung ID, Kim KY, Ahn SC, You JC, Park YM. Enhancement of paclitaxel-induced breast cancer cell death via the glycogen synthase kinase-3β-mediated B-cell lymphoma 2 regulation. BMB Rep 2016; 49:51-6. [PMID: 26246283 PMCID: PMC4914213 DOI: 10.5483/bmbrep.2016.49.1.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Indexed: 01/01/2023] Open
Abstract
Glycogen synthase kinase-3β (GSK-3β) is a serine/threonine protein kinase that is known to mediate cancer cell death. Here, we show that B-cell lymphoma 2 (Bcl-2), an anti-apoptotic protein, is regulated by GSK-3β and that GSK-3β-mediated regulation of Bcl-2 is crucial for mitochondrial-dependent cell death in paclitaxel-stimulated cells. We demonstrate that MCF7 GSK-3β siRNA cells are more sensitive to cell death than MCF7 GFP control cells and that in the absence of GSK-3β, Bcl-2 levels are reduced, a result enhanced by paclitaxel. Paclitaxel-induced JNK (c-Jun N-terminal kinase) activation is critical for Bcl-2 modulation. In the absence of GSK-3β, Bcl-2 was unstable in an ubiquitination-dependent manner in both basal- and paclitaxeltreated cells. Furthermore, we demonstrate that GSK-3β-mediated regulation of Bcl-2 influences cytochrome C release and mitochondrial membrane potential. Taken together, our data suggest that GSK-3β-dependent regulation of Bcl-2 is crucial for mitochondria-dependent cell death in paclitaxel-mediated breast cancer therapy.
Collapse
Affiliation(s)
- Kyung Tae Noh
- Department of Infectious Diseases, Armed Forces Medical Research Institute, Daejeon 34059, Korea
| | - Gil Sun Cha
- Department of Immunology, KU Open Innovation Center, College of Medicine, Konkuk University, Chungju 27478, Korea
| | - Tae Heung Kang
- Department of Immunology, KU Open Innovation Center, College of Medicine, Konkuk University, Chungju 27478, Korea
| | - Joon Cho
- Department of Neurosurgery, Konkuk University Hospital, Seoul 05030, Korea
| | - In Duk Jung
- Department of Immunology, KU Open Innovation Center, College of Medicine, Konkuk University, Chungju 27478, Korea
| | - Kwang-Youn Kim
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea
| | - Soon-Cheol Ahn
- Department of Microbiology and Immunology, Pusan National University School of Medicine, Yangsan 50612, Korea
| | - Ji Chang You
- National Research Laboratory of Molecular Virology, Department of Pathology, School of Medicine, The Catholic University of Korea, Seoul 03083, Korea
| | - Yeong-Min Park
- Department of Immunology, KU Open Innovation Center, College of Medicine, Konkuk University, Chungju 27478, Korea
| |
Collapse
|
19
|
Kouwenberg M, Jacobs CWM, van der Vlag J, Hilbrands LB. Allostimulatory Effects of Dendritic Cells with Characteristic Features of a Regulatory Phenotype. PLoS One 2016; 11:e0159986. [PMID: 27525971 PMCID: PMC4985155 DOI: 10.1371/journal.pone.0159986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 07/12/2016] [Indexed: 02/06/2023] Open
Abstract
Introduction Tolerogenic dendritic cells (DCs) have the potential to prolong graft survival after transplantation. Tolerogenic DCs are in general characterized by a low expression of co-stimulatory molecule and a high IL-10:IL-12 production ratio. Based on promising results with earlier used alternatively activated DCs, we aimed to generate in culture potentially tolerogenic DC by simultaneously blocking GSK3 by lithium chloride (LiCl) and stimulating TLR2 by PAM3CysSerLys4. Materials and Methods Bone marrow-derived LiClPAM3 DCs were generated by the addition of LiCl 24 hours before harvesting, and one hour later PAM3CysSerLys4. The phenotype of the DCs was assessed by determining the expression of co-stimulatory molecules in flow cytometry and cytokine production in ELISA, whereas their functional properties were tested in a mixed lymphocyte reaction. A fully MHC mismatched heterotopic heart transplant preceded by infusion of donor-derived LiClPAM3 DC was performed to assess the tolerogenic potential of LiClPAM3 DCs in vivo. Results LiClPAM3 DCs displayed a tolerogenic phenotype accompanied with a low expression of co-stimulatory molecules and a high IL-10:IL-12 production ratio. However, in mixed lymphocyte reaction, LiClPAM3 DCs appeared superior in T cell stimulation, and induced Th1 and Th17 differentiation. Moreover, mice pretreated with LiClPAM3 DC displayed a reduced graft survival. Analysis of LiClPAM3 DC culture supernatant revealed high levels of CXCL-1, which was also found in supernatants of co-cultures of LiClPAM3 DC and T cells. Nevertheless, we could not show a role for CXCL-1 in T cell proliferation or activation in vitro. Discussion LiClPAM3 DCs display in vitro a tolerogenic phenotype with a high IL-10:IL-12 ratio, but appeared to be highly immunogenic, since allograft rejection was accelerated. As yet unidentified LiClPAM3 DC-derived factors, may explain the immunogenic character of LiClPAM3 DCs in vivo.
Collapse
Affiliation(s)
- M Kouwenberg
- Department of Nephrology, Radboud university medical center, Nijmegen, the Netherlands
| | - C W M Jacobs
- Department of Nephrology, Radboud university medical center, Nijmegen, the Netherlands
| | - J van der Vlag
- Department of Nephrology, Radboud university medical center, Nijmegen, the Netherlands
| | - L B Hilbrands
- Department of Nephrology, Radboud university medical center, Nijmegen, the Netherlands
| |
Collapse
|
20
|
Wang SX, Liu QY, Li Y. Lentinan ameliorates burn sepsis by attenuating CD4 + CD25 + Tregs. Burns 2016; 42:1513-1521. [PMID: 27156806 DOI: 10.1016/j.burns.2016.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 04/02/2016] [Accepted: 04/04/2016] [Indexed: 12/15/2022]
Abstract
AIM The aim of our study was to investigate the effect of lentinan on regulatory T cells (Tregs) in sepsis, especially on the generation of interleukin (IL)-10 via regulation of Erk-FoxO1 signaling. METHODS BalB/c mice were randomized into five groups: sham group, the group with burns plus Pseudomonas aeruginosa infection, and the groups with burns plus P. aeruginosa infection administered 40, 100, and 250mg/kg of lentinan. The mice were sacrificed on postburn days 0, 1, 2, 3, and 4, respectively, with eight animals per group at each time point. The peripheral blood CD4+ CD25+ Tregs and CD4+ T cells were isolated using magnetic microbeads. The phenotypes were analyzed by flow cytometry. The cytokine levels were determined with enzyme-linked immunosorbent assay (ELISA). Signal transduction was studied by Western blot, quantitative polymerase chain reaction (qPCR), and luciferase assay. RESULTS The IL-10-producing capacity of CD4+ CD25+ Tregs was significantly enhanced in the group with burns plus P. aeruginosa infection, compared with the sham group. Administration of lentinan significantly decreased IL-10 production and FoxP3 expression of CD4+ CD25+ Tregs. The proliferative activities of CD4+ T cells, however, were restored. Lentinan decreased lipopolysaccharide (LPS)-induced IL-10 production in the Tregs isolated from burned mice. In addition, lentinan attenuated LPS-stimulated Erk-FoxO1 activation. CONCLUSIONS Lentinan may improve the outcome of postburn sepsis by suppressing LPS-triggered Erk-FoxO1 activation. Consequently, the hyperfunction of CD4+ CD25+ Tregs is inhibited, leading to a shift in the inflammatory status from Th2 to Th1 in postburn sepsis.
Collapse
Affiliation(s)
- Shou-Xing Wang
- Department of General Surgery, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, PR China; Department of General Surgery, First Hospital of Handan, Hebei Province 056000, PR China
| | - Qing-Yang Liu
- Department of Nephrology, China Meitan General Hospital, Beijing 100028, PR China
| | - Yong Li
- Department of General Surgery, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, PR China.
| |
Collapse
|
21
|
Wang Y, Qin Z, Shen S, Xiang N, Liu J, Lin X, Bai Z, Wu Z. A novel fibrinogenase from Agkistrodon acutus venom protects against LPS-induced endotoxemia via regulating NF-κB pathway. Immunopharmacol Immunotoxicol 2015; 37:413-20. [PMID: 26369367 DOI: 10.3109/08923973.2015.1059440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Endotoxins including lipopolysaccharide (LPS) could cause endotoxemia which often results in excessive inflammation, organ dysfunction, sepsis, disseminated intravascular coagulation (DIC) or even death. Previously, a novel fibrinogenase (FII) showed protective effects on LPS-induced DIC via activating protein C and suppressing inflammatory cytokines. OBJECTIVE To evaluate whether FII has protective effect on LPS-induced endotoxemia in mice and learn about the role of NF-κB pathway in TNF-α producing process. METHODS BALB/C mice were intraperitoneally injected (i.p.) with (a) 30 mg/kg LPS, (b) LPS + 0.3 mg/kg FII, (c) LPS + 1.0 mg/kg FII, (d) LPS + 3.0 mg/kg FII or (e) saline. Both survival rate and organ function were tested, including alanine aminotransferase (ALT), blood urine nitrogen (BUN) and tissue section, and TNF-α was examined by ELISA. RAW 264.7 macrophage was administered with (a) LPS, (b) LPS + FII, (c) FII alone or (d) saline, and TNF-α and phosphorylation (P)-NF-κB (P65) were determined by Western blot. RESULTS The administration of LPS led to 65% mortality rate, a rise of serum TNF-α, BUN and ALT levels, and both liver and renal tissue damage were observed. While FII treatment significantly increased the survival rate of LPS-induced endotoxemia mice model, histopathology and protein analysis results also revealed that FII remarkably protected liver and renal from LPS damage as well as decreasing TNF-α level. In vitro, FII significantly decreased LPS-induced TNF-α production and the expression of P-NF-κB (P65). CONCLUSIONS Our findings suggested that FII had protective effect on LPS-induced endotoxemia and organ injuries by suppressing the activation of NF-κB which decreased TNF-α level.
Collapse
Affiliation(s)
- Yingwei Wang
- a Key Laboratory for Regenerative Medicine, Ministry of Education .,b Department of Developmental and Regenerative Biology , and
| | - Zixi Qin
- a Key Laboratory for Regenerative Medicine, Ministry of Education .,b Department of Developmental and Regenerative Biology , and
| | - Shuhao Shen
- c Department of Pharmacology , Medical College , and
| | - Nanlin Xiang
- c Department of Pharmacology , Medical College , and
| | - Jun Liu
- c Department of Pharmacology , Medical College , and
| | - Xi Lin
- c Department of Pharmacology , Medical College , and
| | - Zhiquan Bai
- d Department of Physiology , Medical College, Jinan University , Guangzhou , China
| | - Zheng Wu
- a Key Laboratory for Regenerative Medicine, Ministry of Education .,b Department of Developmental and Regenerative Biology , and
| |
Collapse
|
22
|
D'Angelo B, Ek CJ, Sun Y, Zhu C, Sandberg M, Mallard C. GSK3β inhibition protects the immature brain from hypoxic-ischaemic insult via reduced STAT3 signalling. Neuropharmacology 2015; 101:13-23. [PMID: 26384655 DOI: 10.1016/j.neuropharm.2015.09.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 09/11/2015] [Accepted: 09/14/2015] [Indexed: 02/06/2023]
Abstract
Hypoxic-ischaemic (HI) injury is an important cause of neurological morbidity in neonates. HI leads to pathophysiological responses, including inflammation and oxidative stress that culminate in cell death. Activation of glycogen synthase kinase 3β (GSK3β) and the signal transducer and activator of transcription (STAT3) promotes brain inflammation. The purpose of this study was to test whether inhibition of GSK3β signalling protects against neonatal HI brain injury. Mice were subjected to HI at postnatal day (PND) 9 and treated with a selective GSK3β inhibitor, SB216763. Brain injury and caspase-3 activation, anti-oxidant and inflammatory mRNA responses and activation of STAT3 were analysed. Our results show that HI reduced phosphorylation of GSK3β, thus promoting its kinase activity. The GSK3β inhibitor reduced caspase-3 activation and neuronal cell death elicited by HI and reverted the effects of HI on gene expression of the anti-oxidant enzyme sod2 and mitochondrial factor pgc1α. The HI insult activated STAT3 in glial cells and GSK3β inhibition attenuated STAT3 phosphorylation and its nuclear translocation following HI. Further, GSK3β inhibition reduced HI-induced gene expression of pro-inflammatory cytokines tnfα and Il-6, while promoted the anti-inflammatory factor Il-10. In summary, data show that GSK3β inhibition is neuroprotective in neonatal HI brain injury likely via reduced pro-inflammatory responses by blocking STAT3 signalling. Our study suggests that pharmacological interventions built upon GSK3β silencing strategies could represent a novel therapy in neonatal brain injury.
Collapse
Affiliation(s)
- Barbara D'Angelo
- Institute of Neuroscience and Physiology, Department of Physiology, University of Gothenburg, Sweden
| | - C Joakim Ek
- Institute of Neuroscience and Physiology, Department of Physiology, University of Gothenburg, Sweden
| | - Yanyan Sun
- Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, University of Gothenburg, Sweden
| | - Changlian Zhu
- Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, University of Gothenburg, Sweden
| | - Mats Sandberg
- Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Carina Mallard
- Institute of Neuroscience and Physiology, Department of Physiology, University of Gothenburg, Sweden.
| |
Collapse
|
23
|
Lee SJ, Shin SJ, Lee SJ, Lee MH, Kang TH, Noh KT, Shin YK, Kim HW, Yun CH, Jung ID, Park YM. Mycobacterium abscessus MAB2560 induces maturation of dendritic cells via Toll-like receptor 4 and drives Th1 immune response. BMB Rep 2015; 47:512-7. [PMID: 24667171 PMCID: PMC4206727 DOI: 10.5483/bmbrep.2014.47.9.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Indexed: 01/12/2023] Open
Abstract
In this study, we showed that Mycobacterium abscessus MAB2560 induces the maturation of dendritic cells (DCs), which are representative antigen-presenting cells (APCs). M. abscessus MAB2560 stimulate the production of pro-inflammatory cytokines [interleukin (IL)-6, tumor necrosis factor (TNF)-α, IL-1β, and IL-12p70] and reduce the endocytic capacity and maturation of DCs. Using TLR4-/- DCs, we found that MAB2560 mediated DC maturation via Toll-like receptor 4 (TLR4). MAB2560 also activated the MAPK signaling pathway, which was essential for DC maturation. Furthermore, MAB2560- treated DCs induced the transformation of naïve T cells to polarized CD4+ and CD8+ T cells, which would be crucial for Th1 polarization of the immune response. Taken together, our results indicate that MAB2560 could potentially regulate the host immune response to M. abscessus and may have critical implications for the manipulation of DC functions for developing DC-based immunotherapy.
Collapse
Affiliation(s)
- Su Jung Lee
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Sung Jae Shin
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Seung Jun Lee
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Moon Hee Lee
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Tae Heung Kang
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Kyung Tae Noh
- Department of Infectious Diseases Research, Armed Forces Medical Research Institute, Daejeon 305-878, Korea
| | - Yong Kyoo Shin
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul 156-756, Korea
| | - Han Wool Kim
- Department of Agricultural Biotechnology, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
| | - In Duk Jung
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Yeong-Min Park
- Department of Microbiology and Immunology, School of Medicine, Pusan National University, Yangsan 626-770, Korea
| |
Collapse
|
24
|
Moon HG, Qin Z, Quan T, Xie L, Dela Cruz CS, Jin Y. Matrix protein CCN1 induced by bacterial DNA and CpG ODN limits lung inflammation and contributes to innate immune homeostasis. Mucosal Immunol 2015; 8:243-53. [PMID: 25005359 PMCID: PMC4289128 DOI: 10.1038/mi.2014.62] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 05/31/2014] [Accepted: 06/03/2014] [Indexed: 02/04/2023]
Abstract
To defend against pulmonary infections, lung epithelial cells are equipped with complex innate immunity closely linked to inflammation. Dysregulated innate immunity/inflammation leads to self-perpetuating lung injury. The CpG motif in bacterial DNA is one of the factors involved in bacterial infection-associated inflammation. Bacterial DNA and synthetic CpG oligonucleotide (ODN) induced CCN1 secretion from lung epithelial cells, functioning as a potential "braking" signal to prevent uncontrolled inflammatory responses. CpG ODN-induced endoplasmic reticulum (ER) stress resulted in Src-Y527 phosphorylation (pY527) and Src/CCN1 vWF domain dissociation. Src-Y527 activated caveolin-1 (cav-1) phosphorylation at Y14 and then modulated CCN1 secretion via pCav-1 interaction with the CCN1 IGFbp domain. Functionally, secreted CCN1 promoted anti-inflammatory cytokine interleukin (IL)-10 release from epithelial cells via integrin αVβ6-PKC, and this subsequently suppressed tumor necrosis factor (TNF)-α, macrophage inflammatory protein 2 (MIP-2)-2 secretion and neutrophil infiltration in the lungs. Collectively, bacterial DNA/CpG ODN-stimulated CCN1 secretion via the BiP/GRP78-Src(Y527)-JNK-Cav-1(Y14) pathway and CpG-induced CCN1 conferred anti-inflammatory roles. Our studies suggested a novel paradigm by which the lung epithelium maintains innate immune homeostasis after bacterial infection.
Collapse
Affiliation(s)
- Hyung-Geun Moon
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA 02115
| | - Zhaoping Qin
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA 48109
| | - Taihao Quan
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA 48109
| | - Lixin Xie
- Department of Respiratory Medicine, Chinese PLA General Hospital, Beijing, China
| | - Charles S. Dela Cruz
- Department of Pulmonary, Critical Care and Sleep Medicine, Yale University, New Haven, CT, USA 06520
| | - Yang Jin
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA 02115
| |
Collapse
|
25
|
Tsai TT, Chuang YJ, Lin YS, Chang CP, Wan SW, Lin SH, Chen CL, Lin CF. Antibody-dependent enhancement infection facilitates dengue virus-regulated signaling of IL-10 production in monocytes. PLoS Negl Trop Dis 2014; 8:e3320. [PMID: 25412261 PMCID: PMC4239119 DOI: 10.1371/journal.pntd.0003320] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 10/06/2014] [Indexed: 12/20/2022] Open
Abstract
Background Interleukin (IL)-10 levels are increased in dengue virus (DENV)-infected patients with severe disorders. A hypothetical intrinsic pathway has been proposed for the IL-10 response during antibody-dependent enhancement (ADE) of DENV infection; however, the mechanisms of IL-10 regulation remain unclear. Principle Finding We found that DENV infection and/or attachment was sufficient to induce increased expression of IL-10 and its downstream regulator suppressor of cytokine signaling 3 in human monocytic THP-1 cells and human peripheral blood monocytes. IL-10 production was controlled by activation of cyclic adenosine monophosphate response element-binding (CREB), primarily through protein kinase A (PKA)- and phosphoinositide 3-kinase (PI3K)/PKB-regulated pathways, with PKA activation acting upstream of PI3K/PKB. DENV infection also caused glycogen synthase kinase (GSK)-3β inactivation in a PKA/PI3K/PKB-regulated manner, and inhibition of GSK-3β significantly increased DENV-induced IL-10 production following CREB activation. Pharmacological inhibition of spleen tyrosine kinase (Syk) activity significantly decreased DENV-induced IL-10 production, whereas silencing Syk-associated C-type lectin domain family 5 member A caused a partial inhibition. ADE of DENV infection greatly increased IL-10 expression by enhancing Syk-regulated PI3K/PKB/GSK-3β/CREB signaling. We also found that viral load, but not serotype, affected the IL-10 response. Finally, modulation of IL-10 expression could affect DENV replication. Significance These results demonstrate that, in monocytes, IL-10 production is regulated by ADE through both an extrinsic and an intrinsic pathway, all involving a Syk-regulated PI3K/PKB/GSK-3β/CREB pathway, and both of which impact viral replication. IL-10 has multiple cellular functions, including anti-inflammatory and immunomodulatory effects. Clinical studies have demonstrated that the serum levels of IL-10 are significantly increased in DENV-infected patients with severe disorders. However, the molecular mechanism underlying DENV-induced IL-10 production is still unresolved. In this study, we demonstrate a molecular mechanism for DENV-induced IL-10 production, which may be exacerbated by ADE through Fcγ receptor-mediated extrinsic and intrinsic pathways, leading to IL-10/SOCS3-mediated advantages for viral replication. With or without Fcγ receptor- or CLEC5A-mediated DENV infection, a common Syk/PKA-regulated PI3K/PKB activation results in a decrease in GSK-3β activity followed by an increase in CREB-mediated IL-10 expression not only in THP-1 monocytic cells but also in human monocytes. Taken together, we demonstrate a potential regulation and a pathological role for ADE-induced IL-10 overproduction during DENV replication. Therefore, inhibiting immunosuppression by targeting the IL-10 pathways identified in this study may help to prevent the progression of severe dengue diseases.
Collapse
Affiliation(s)
- Tsung-Ting Tsai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Jui Chuang
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yee-Shin Lin
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Peng Chang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shu-Wen Wan
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Hsiang Lin
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Ling Chen
- Center of Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chiou-Feng Lin
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Microbiology and Immunology, College of Medicine, Taipei Medical University, Taipei, Taiwan
- * E-mail:
| |
Collapse
|
26
|
Shao Y, Cheng Z, Li X, Chernaya V, Wang H, Yang XF. Immunosuppressive/anti-inflammatory cytokines directly and indirectly inhibit endothelial dysfunction--a novel mechanism for maintaining vascular function. J Hematol Oncol 2014; 7:80. [PMID: 25387998 PMCID: PMC4236671 DOI: 10.1186/s13045-014-0080-6] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 10/13/2014] [Indexed: 12/14/2022] Open
Abstract
Endothelial dysfunction is a pathological status of the vascular system, which can be broadly defined as an imbalance between endothelium-dependent vasoconstriction and vasodilation. Endothelial dysfunction is a key event in the progression of many pathological processes including atherosclerosis, type II diabetes and hypertension. Previous reports have demonstrated that pro-inflammatory/immunoeffector cytokines significantly promote endothelial dysfunction while numerous novel anti-inflammatory/immunosuppressive cytokines have recently been identified such as interleukin (IL)-35. However, the effects of anti-inflammatory cytokines on endothelial dysfunction have received much less attention. In this analytical review, we focus on the recent progress attained in characterizing the direct and indirect effects of anti-inflammatory/immunosuppressive cytokines in the inhibition of endothelial dysfunction. Our analyses are not only limited to the importance of endothelial dysfunction in cardiovascular disease progression, but also expand into the molecular mechanisms and pathways underlying the inhibition of endothelial dysfunction by anti-inflammatory/immunosuppressive cytokines. Our review suggests that anti-inflammatory/immunosuppressive cytokines serve as novel therapeutic targets for inhibiting endothelial dysfunction, vascular inflammation and cardio- and cerebro-vascular diseases.
Collapse
Affiliation(s)
- Ying Shao
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Zhongjian Cheng
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Xinyuan Li
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Valeria Chernaya
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Hong Wang
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Xiao-feng Yang
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA. .,Department of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, PA, 19140, USA.
| |
Collapse
|
27
|
Lee SJ, Noh KT, Kang TH, Han HD, Shin SJ, Soh BY, Park JH, Shin YK, Kim HW, Yun CH, Park WS, Jung ID, Park YM. The Mycobacterium avium subsp. Paratuberculosis protein MAP1305 modulates dendritic cell-mediated T cell proliferation through Toll-like receptor-4. BMB Rep 2014; 47:115-20. [PMID: 24393523 PMCID: PMC4163902 DOI: 10.5483/bmbrep.2014.47.2.277] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 12/16/2013] [Accepted: 12/18/2013] [Indexed: 12/19/2022] Open
Abstract
In this study, we show that Mycobacterium avium subsp. paratuberculosis MAP1305 induces the maturation of bone marrow-derived dendritic cells (BMDCs), a representative antigen presenting cell (APC). MAP1305 protein induces DC maturation and the production of pro-inflammatory cytokines (Interleukin (IL)-6), tumor necrosis factor (TNF)-α, and IL-1β) through Toll like receptor-4 (TLR-4) signaling by directly binding with TLR4. MAP1305 activates the phosphorylation of MAPKs, such as ERK, p38MAPK, and JNK, which is essential for DC maturation. Furthermore, MAP1305-treated DCs transform naïve T cells to polarized CD4(+) and CD8(+) T cells, thus indicating a key role for this protein in the Th1 polarization of the resulting immune response. Taken together, M. avium subsp. paratuberculosis MAP1305 is important for the regulation of innate immune response through DC-mediated proliferation of CD4(+) and CD8(+) T cells.
Collapse
Affiliation(s)
- Su Jung Lee
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Kyung Tae Noh
- Department of Infectious Diseases Research, Armed Forces Medical Research Institute, Daejeon 305-878, Korea
| | - Tae Heung Kang
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Hee Dong Han
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Sung Jae Shin
- Department of Microbiology and Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Byoung Yul Soh
- Department of Biochemistry, College of Medicine, Seonam University, Namwon 590-711, Korea
| | - Jung Hee Park
- Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental & Bioresources Sciences, Chonbuk National University, Iksan 570-752, Korea
| | - Yong Kyoo Shin
- Department of Pharmacology, Chung-Ang University, College of Medicine, Seoul 156-756, Korea
| | - Han Wool Kim
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-742, Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-742, Korea
| | - Won Sun Park
- Department of Physiology, School of Medicine, Kangwon National University, Chuncheon 200-701, Korea
| | - In Duk Jung
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Yeong-Min Park
- Department of Immunology, Lab of Dendritic Cell Differentiation & Regulation, School of Medicine, Konkuk University, Chungju 380-701, Korea; Department of Microbiology and Immunology, School of Medicine, Pusan National University, Yangsan 626-770, Korea
| |
Collapse
|
28
|
Noh KT, Cha GS, Kim HC, Lee JH, Ahn SC, Kim DK, Park YM. Ellagic Acid Modulates LPS-Induced Maturation of Dendritic Cells Through the Regulation of JNK Activity. J Med Food 2014; 17:996-1002. [DOI: 10.1089/jmf.2013.2970] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Kyung Tae Noh
- Department of Infectious Diseases Research, Armed Forces Medical Research Institute, Daejeon, South Korea
| | - Gil Sun Cha
- Department of Microbiology and Immunology, Pusan National University School of Medicine, Yangsan, South Korea
| | - Hyung Chul Kim
- Department of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University, Seoul, South Korea
| | - Jae Hong Lee
- Department of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University, Seoul, South Korea
| | - Soon Cheol Ahn
- Department of Microbiology and Immunology, Pusan National University School of Medicine, Yangsan, South Korea
| | - Dae Kyong Kim
- Department of Environmental and Health Chemistry, College of Pharmacy, Chung-Ang University, Seoul, South Korea
| | - Yeong-Min Park
- Department of Immunology, College of Medicine, Konkuk University, Seoul, South Korea
| |
Collapse
|
29
|
Lee S, Pant HC, Shea TB. Divergent and convergent roles for kinases and phosphatases in neurofilament dynamics. J Cell Sci 2014; 127:4064-77. [PMID: 25015294 DOI: 10.1242/jcs.153346] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
C-terminal neurofilament phosphorylation mediates cation-dependent self-association leading to neurofilament incorporation into the stationary axonal cytoskeleton. Multiple kinases phosphorylate the C-terminal domains of the heavy neurofilament subunit (NF-H), including cyclin-dependent protein kinase 5 (CDK5), mitogen-activated protein kinases (MAPKs), casein kinase 1 and 2 (CK1 and CK2) and glycogen synthase kinase 3β (GSK3β). The respective contributions of these kinases have been confounded because they phosphorylate multiple substrates in addition to neurofilaments and display extensive interaction. Herein, differentiated NB2a/d1 cells were transfected with constructs expressing GFP-tagged NF-H, isolated NF-H sidearms and NF-H lacking the distal-most 187 amino acids. Cultures were treated with roscovitine, PD98059, Li(+), D4476, tetrabromobenzotriazole and calyculin, which are active against CDK5, MKK1 (also known as MAP2K1), GSK3β, CK1, CK2 and protein phosphatase 1 (PP1), respectively. Sequential phosphorylation by CDK5 and GSK3β mediated the neurofilament-neurofilament associations. The MAPK pathway (i.e. MKK1 to ERK1/2) was found to downregulate GSK3β, and CK1 activated PP1, both of which promoted axonal transport and restricted neurofilament-neurofilament associations to axonal neurites. The MAPK pathway and CDK5, but not CK1 and GSK3β, inhibited neurofilament proteolysis. These findings indicate that phosphorylation of neurofilaments by the proline-directed MAPK pathway and CDK5 counterbalance the impact of phosphorylation of neurofilaments by the non-proline-directed CK1 and GSK3β.
Collapse
Affiliation(s)
- Sangmook Lee
- Center for Cellular Neurobiology and Neurodegeneration Research, Department of Biological Sciences, University of Massachusetts Lowell, Lowell, MA 01854, USA
| | - Harish C Pant
- Cytoskeletal Protein Regulation Section, NIH, NINDS, Bethesda, MD 20892, USA
| | - Thomas B Shea
- Center for Cellular Neurobiology and Neurodegeneration Research, Department of Biological Sciences, University of Massachusetts Lowell, Lowell, MA 01854, USA
| |
Collapse
|
30
|
Wang H, Kumar A, Lamont RJ, Scott DA. GSK3β and the control of infectious bacterial diseases. Trends Microbiol 2014; 22:208-17. [PMID: 24618402 DOI: 10.1016/j.tim.2014.01.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/24/2014] [Accepted: 01/30/2014] [Indexed: 12/12/2022]
Abstract
Glycogen synthase kinase 3β (GSK3β) has been shown to be a crucial mediator of the intensity and direction of the innate immune system response to bacterial stimuli. This review focuses on: (i) the central role of GSK3β in the regulation of pathogen-induced inflammatory responses through the regulation of pro- and anti-inflammatory cytokine production, (ii) the extensive ongoing efforts to exploit GSK3β for its therapeutic potential in the control of infectious diseases, and (iii) the increasing evidence that specific pathogens target GSK3β-related pathways for immune evasion. A better understanding of complex bacteria-GSK3β interactions is likely to lead to more effective anti-inflammatory interventions and novel targets to circumvent pathogen colonization and survival.
Collapse
Affiliation(s)
- Huizhi Wang
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA
| | - Akhilesh Kumar
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA
| | - Richard J Lamont
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA; Microbiology and Immunology, University of Louisville, Louisville, KY 40292, USA
| | - David A Scott
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA; Microbiology and Immunology, University of Louisville, Louisville, KY 40292, USA.
| |
Collapse
|
31
|
Maleylated-BSA suppresses lipopolysaccharide-induced IL-6 production by activating the ERK-signaling pathway in murine RAW264.7 cells. Int Immunopharmacol 2014; 19:5-9. [PMID: 24406428 DOI: 10.1016/j.intimp.2013.12.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 12/19/2013] [Accepted: 12/24/2013] [Indexed: 11/20/2022]
Abstract
Macrophages are well known for their ability to induce diverse beneficial immune responses, especially in the defense against pathogens. However, an excessive activation of macrophages may cause harmful inflammation. In this context, the suppression of excessive macrophage activation would be a promising therapeutic strategy for treating inflammatory diseases. We have previously found that maleylated-bovine serum albumin (maleylated-BSA) suppresses the production of inflammatory mediators in murine macrophages. However, the immunosuppressive effects and underlying mechanism(s) of maleylated-BSA remain unclear. Here, we report that pretreatment with maleylated-BSA strongly inhibited the production of interleukin 6 (IL-6) induced by bacterial lipopolysaccharide (LPS) in murine RAW264.7 cells. This inhibitory effect of maleylated-BSA on LPS-induced IL-6 production was eliminated by treatment with an extracellular signal-regulated kinase (ERK) inhibitor, U0126, indicating the involvement of ERK pathways. Taken together, we have shown that maleylated-BSA suppresses LPS-induced production of IL-6 via the activation of an ERK signaling pathway in murine macrophages. The findings of this study imply the possibility of a novel therapeutic strategy for inflammatory diseases.
Collapse
|
32
|
Jellestad L, Fink T, Pradarutti S, Kubulus D, Wolf B, Bauer I, Thiemermann C, Rensing H. Inhibition of glycogen synthase kinase (GSK)-3-β improves liver microcirculation and hepatocellular function after hemorrhagic shock. Eur J Pharmacol 2014; 724:175-84. [PMID: 24389157 DOI: 10.1016/j.ejphar.2013.12.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 10/25/2022]
Abstract
Ischemia and reperfusion may cause liver injury and are characterized by hepatic microperfusion failure and a decreased hepatocellular function. Inhibition of glycogen synthase kinase (GSK)-3β, a serine-threonine kinase that has recently emerged as a key regulator in the modulation of the inflammatory response after stress events, may be protective in conditions like sepsis, inflammation and shock. Therefore, aim of the study was to assess the role of GSK-3β in liver microcirculation and hepatocellular function after hemorrhagic shock and resuscitation (H/R). Anesthetized male Sprague-Dawley rats underwent pretreatment with Ringer´s solution, vehicle (DMSO) or TDZD-8 (1 mg/kg), a selective GSK-3β inhibitor, 30 min before induction of hemorrhagic shock (mean arterial pressure 35±5 mmHg for 90 min) and were resuscitated with shed blood and Ringer´s solution (2h). 5h after resuscitation hepatic microcirculation was assessed by intravital microscopy. Propidium iodide (PI) positive cells, liver enzymes and alpha-GST were measured as indicators of hepatic injury. Liver function was estimated by assessment of indocyanine green plasma disappearance rate. H/R led to a significant decrease in sinusoidal diameters and impairment of liver function compared to sham operation. Furthermore, the number of PI positive cells in the liver as well as serum activities of liver enzymes and alpha-GST increased significantly after H/R. Pretreatment with TDZD-8 prevented the changes in liver microcirculation, hepatocellular injury and liver function after H/R. A significant rise in the plasma level of IL-10 was observed. Thus, inhibition of GSK-3β before hemorrhagic shock modulates the inflammatory response and improves hepatic microcirculation and hepatocellular function.
Collapse
Affiliation(s)
- Lena Jellestad
- Department of Anesthesiology, Critical Care and Pain Medicine, University of Saarland, Kirrberger Straße 1, D-66421 Homburg, Germany
| | - Tobias Fink
- Department of Anesthesiology, Critical Care and Pain Medicine, University of Saarland, Kirrberger Straße 1, D-66421 Homburg, Germany
| | - Sascha Pradarutti
- Department of Anesthesiology, Critical Care and Pain Medicine, University of Saarland, Kirrberger Straße 1, D-66421 Homburg, Germany
| | - Darius Kubulus
- Department of Anesthesiology, Critical Care and Pain Medicine, University of Saarland, Kirrberger Straße 1, D-66421 Homburg, Germany
| | - Beate Wolf
- Department of Anesthesiology, Critical Care and Pain Medicine, University of Saarland, Kirrberger Straße 1, D-66421 Homburg, Germany
| | - Inge Bauer
- Department of Anesthesiology, University Hospital Duesseldorf, Moorenstraße 5, D-40225 Duesseldorf, Germany
| | - Chris Thiemermann
- St. Bartholomew's and Royal London, School of Medicine and Dentistry, William Harvey Research Institute, Centre for Experimental Medicine, Nephrology and Critical Care, Charterhouse Square, London EC1M 6BQ, UK
| | - Hauke Rensing
- Department of Anesthesiology and Critical Care Medicine, Leopoldina Hospital, Gustav-Adolf-Straße 6-8, D-97422 Schweinfurt, Germany.
| |
Collapse
|
33
|
Shefler I, Pasmanik-Chor M, Kidron D, Mekori YA, Hershko AY. T cell–derived microvesicles induce mast cell production of IL-24: Relevance to inflammatory skin diseases. J Allergy Clin Immunol 2014; 133:217-24.e1-3. [DOI: 10.1016/j.jaci.2013.04.035] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 03/24/2013] [Accepted: 04/18/2013] [Indexed: 02/05/2023]
|
34
|
Ban K, Peng Z, Kozar RA. Inhibition of ERK1/2 worsens intestinal ischemia/reperfusion injury. PLoS One 2013; 8:e76790. [PMID: 24073294 PMCID: PMC3779170 DOI: 10.1371/journal.pone.0076790] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 09/03/2013] [Indexed: 01/09/2023] Open
Abstract
Background The role of extracellular signal-regulated protein kinase (ERK) in intestinal ischemia/reperfusion (I/R) injury has not been well investigated. The aim of the current study was to examine the effect of inhibition of the ERK pathway in an in vitro and in vivo model of intestinal I/R injury. Methods ERK1/2 activity was inhibited using the specific inhibitor, U0126, in intestinal epithelial cells under hypoxia/reoxygenation conditions and in mice subjected to 1 hour of intestinal ischemia followed by 6 hours reperfusion. In vitro, cell proliferation was assessed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay, apoptosis by DNA fragmentation, and migration using an in vitro model of intestinal wound healing. Cells were also transfected with a p70S6K plasmid and the effects of overexpression similarly analyzed. In vivo, the effects of U0126 on intestinal cell proliferation and apoptosis, intestinal permeability, lung and intestinal neutrophil infiltration and injury, and plasma cytokine levels were measured. Survival was also assessed after U0126. Activity of p70S6 kinase (p70S6K) was measured by Western blot. Results In vitro, inhibition of ERK1/2 by U0126 significantly decreased cell proliferation and migration but enhanced cell apoptosis. Overexpression of p70S6K promoted cell proliferation and decreased cell apoptosis. In vivo, U0126 significantly increased cell apoptosis and decreased cell proliferation in the intestine, increased intestinal permeability, intestinal and lung neutrophil infiltration, and injury, as well as systemic pro-inflammatory cytokines, TNF-α, IL-6 and IL-1β. Mortality was also significantly increased by U0126. Inhibition of ERK1/2 by U0126 also abolished activity of p70S6K both in vitro and in vivo models. Conclusion Pharmacologic inhibition of ERK1/2 by U0126 worsens intestinal IR injury. The detrimental effects are mediated, at least in part, by inhibition of p70S6K, the major effector of mammalian target of rapamycin pathway.
Collapse
Affiliation(s)
- Kechen Ban
- Department of Surgery, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
- * E-mail:
| | - Zhanglong Peng
- Department of Surgery, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Rosemary A. Kozar
- Department of Surgery, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| |
Collapse
|
35
|
Tsai TT, Chuang YJ, Lin YS, Wan SW, Chen CL, Lin CF. An emerging role for the anti-inflammatory cytokine interleukin-10 in dengue virus infection. J Biomed Sci 2013; 20:40. [PMID: 23800014 PMCID: PMC3700829 DOI: 10.1186/1423-0127-20-40] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 06/18/2013] [Indexed: 12/31/2022] Open
Abstract
Infection with dengue virus (DENV) causes both mild dengue fever and severe dengue diseases, such as dengue hemorrhagic fever and dengue shock syndrome. The pathogenic mechanisms for DENV are complicated, involving viral cytotoxicity, immunopathogenesis, autoimmunity, and underlying host diseases. Viral load correlates with disease severity, while the antibody-dependent enhancement of infection largely determines the secondary effects of DENV infection. Epidemiological and experimental studies have revealed an association between the plasma levels of interleukin (IL)-10, which is the master anti-inflammatory cytokine, and disease severity in patients with DENV infection. Based on current knowledge of IL-10-mediated immune regulation during infection, researchers speculate an emerging role for IL-10 in clinical disease prognosis and dengue pathogenesis. However, the regulation of dengue pathogenesis has not been fully elucidated. This review article discusses the regulation and implications of IL-10 in DENV infection. For future strategies against DENV infection, manipulating IL-10 may be an effective antiviral treatment in addition to the development of a safe dengue vaccine.
Collapse
Affiliation(s)
- Tsung-Ting Tsai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | | | | | | | | | | |
Collapse
|
36
|
Kaddour H, Hamdi Y, Vaudry D, Basille M, Desrues L, Leprince J, Castel H, Vaudry H, Tonon MC, Amri M, Masmoudi-Kouki O. The octadecaneuropeptide ODN prevents 6-hydroxydopamine-induced apoptosis of cerebellar granule neurons through a PKC-MAPK-dependent pathway. J Neurochem 2013; 125:620-33. [PMID: 23286644 DOI: 10.1111/jnc.12140] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 12/31/2012] [Accepted: 01/02/2013] [Indexed: 12/27/2022]
Abstract
Oxidative stress, induced by various neurodegenerative diseases, initiates a cascade of events leading to apoptosis, and thus plays a critical role in neuronal injury. In this study, we have investigated the potential neuroprotective effect of the octadecaneuropeptide (ODN) on 6-hydroxydopamine (6-OHDA)-induced oxidative stress and apoptosis in cerebellar granule neurons (CGN). ODN, which is produced by astrocytes, is an endogenous ligand for both central-type benzodiazepine receptors (CBR) and a metabotropic receptor. Incubation of neurons with subnanomolar concentrations of ODN (10⁻¹⁸ to 10⁻¹² M) inhibited 6-OHDA-evoked cell death in a concentration-dependent manner. The effect of ODN on neuronal survival was abrogated by the metabotropic receptor antagonist, cyclo₁₋₈ [DLeu⁵]OP, but not by a CBR antagonist. ODN stimulated polyphosphoinositide turnover and ERK phosphorylation in CGN. The protective effect of ODN against 6-OHDA toxicity involved the phospholipase C/ERK MAPK transduction cascade. 6-OHDA treatment induced an accumulation of reactive oxygen species, an increase of the expression of the pro-apoptotic gene Bax, a drop of the mitochondrial membrane potential and a stimulation of caspase-3 activity. Exposure of 6-OHDA-treated cells to ODN blocked all the deleterious effects of the toxin. Taken together, these data demonstrate for the first time that ODN is a neuroprotective agent that prevents 6-OHDA-induced oxidative stress and apoptotic cell death.
Collapse
Affiliation(s)
- Hadhemi Kaddour
- Laboratory of Functional Neurophysiology and Pathology, Research Unit, UR/11ES09, Department of Biological Sciences, Faculty of Science of Tunis, University Tunis El Manar, Tunis, Tunisia
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Park SN, Noh KT, Jeong YI, Jung ID, Kang HK, Cha GS, Lee SJ, Seo JK, Kang DH, Hwang TH, Lee EK, Kwon B, Park YM. Rhamnogalacturonan II is a Toll-like receptor 4 agonist that inhibits tumor growth by activating dendritic cell-mediated CD8+ T cells. Exp Mol Med 2013; 45:e8. [PMID: 23392255 PMCID: PMC3584663 DOI: 10.1038/emm.2013.14] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
We evaluated the effectiveness of rhamnogalacturonan II (RG-II)-stimulated bone marrow-derived dendritic cells (BMDCs) vaccination on the induction of antitumor immunity in a mouse lymphoma model using EG7-lymphoma cells expressing ovalbumin (OVA). BMDCs treated with RG-II had an activated phenotype. RG-II induced interleukin (IL)-12, IL-1β, tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) production during dendritic cell (DC) maturation. BMDCs stimulated with RG-II facilitate the proliferation of CD8+ T cells. Using BMDCs from the mice deficient in Toll-like receptors (TLRs), we revealed that RG-II activity is dependent on TLR4. RG-II showed a preventive effect of immunization with OVA-pulsed BMDCs against EG7 lymphoma. These results suggested that RG-II expedites the DC-based immune response through the TLR4 signaling pathway.
Collapse
Affiliation(s)
- Sung Nam Park
- Department of Microbiology and Immunology, School of Medicine, Pusan National University, and Research Center for Hepatic and Biliary Cancer Center, Pusan National University Yangsan Hospital, Yangsan, South Korea
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Noh KT, Chae SH, Chun SH, Jung ID, Kang HK, Park YM. Resveratrol suppresses tumor progression via the regulation of indoleamine 2,3-dioxygenase. Biochem Biophys Res Commun 2013; 431:348-53. [DOI: 10.1016/j.bbrc.2012.12.093] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 12/21/2012] [Indexed: 11/25/2022]
|
39
|
Maejima Y, Galeotti J, Molkentin JD, Sadoshima J, Zhai P. Constitutively active MEK1 rescues cardiac dysfunction caused by overexpressed GSK-3α during aging and hemodynamic pressure overload. Am J Physiol Heart Circ Physiol 2012; 303:H979-88. [PMID: 22904158 DOI: 10.1152/ajpheart.00415.2012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Expression of GSK-3α is increased in aging hearts and those subjected to hemodynamic overload. Overexpressed GSK-3α inhibits ERK and enhances pressure overload (PO)-induced cardiac dysfunction. We studied whether suppression of the MEK1/ERK pathway contributes to cardiac responses induced by overexpressed GSK-3α using constitutively active MEK1 (CA-MEK1)/GSK-3α bigenic mice (bigenic mice), which were obtained by crossing cardiac-specific GSK-3α transgenic mice (Tg-GSK) and cardiac-specific CA-MEK1 transgenic mice (Tg-MEK1). The suppression of ERK phosphorylation observed in Tg-GSK was eliminated in bigenic mice. At 12 mo, left ventricular (LV) weight/tibia length, LV weight/body weight, and cardiac myocyte size were significantly smaller in Tg-GSK than in nontransgenic mice (NTg), but were not significantly different between Tg-MEK1 and bigenic mice. The LV ejection fraction (LVEF), fractional shortening (FS), and change in pressure over time were significantly lower in Tg-GSK than in NTg, but were not significantly different between bigenic mice and Tg-MEK1. The increase in apoptosis in Tg-GSK was abolished in bigenic mice, although the increase in fibrosis was not. After PO, the decrease in cardiac hypertrophy and the enhancement of apoptosis seen in Tg-GSK were abrogated in bigenic mice. After PO, the LVEF and FS were significantly reduced in Tg-GSK compared with its sham, but not in NTg, Tg-MEK1, or bigenic mice compared with their respective shams. There was no significant difference in LVEF and FS between bigenic mice and Tg-MEK1 after PO. In conclusion, inhibition of the MEK1/ERK pathway mediates the hypertrophy suppression and cardiac dysfunction caused by GSK-3α overexpression in cardiac myocytes.
Collapse
Affiliation(s)
- Yasuhiro Maejima
- Cardiovascular Research Institute, Department of Cell Biology and Molecular Medicine, University of Medicine and Dentistry, New Jersey, New Jersey Medical School, Newark, New Jersey 07103, USA
| | | | | | | | | |
Collapse
|