1
|
Parletta AC, Cerri GC, Gasparini CRB, Panico K, Vieira-Junior DN, Zacarias-Rodrigues LM, Senger N, de Almeida Silva A, Fevereiro M, Diniz GP, Irigoyen MCC, Barreto-Chaves MLM. Cardiac hypertrophy that affects hyperthyroidism occurs independently of the NLRP3 inflammasome. Pflugers Arch 2024; 476:1065-1075. [PMID: 38679646 DOI: 10.1007/s00424-024-02965-6] [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: 01/04/2024] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 05/01/2024]
Abstract
Cardiac hypertrophy (CH) is an adaptive response to maintain cardiac function; however, persistent stress responses lead to contractile dysfunction and heart failure. Although inflammation is involved in these processes, the mechanisms that control cardiac inflammation and hypertrophy still need to be clarified. The NLRP3 inflammasome is a cytosolic multiprotein complex that mediates IL-1β production. The priming step of NLRP3 is essential for increasing the expression of its components and occurs following NF-κB activation. Hyperthyroidism triggers CH, which can progress to maladaptive CH and even heart failure. We have shown in a previous study that thyroid hormone (TH)-induced CH is linked to the upregulation of S100A8, leading to NF-κB activation. Therefore, we aimed to investigate whether the NLRP3 inflammasome is involved in TH-induced CH and its potential role in CH pathophysiology. Hyperthyroidism was induced in NLRP3 knockout (NLRP3-KO), Caspase-1-KO and Wild Type (WT) male mice of the C57Bl/6J strain, aged 8-12 weeks, by triiodothyronine (7 μg/100 g BW, i.p.) administered daily for 14 days. Morphological and cardiac functional analysis besides molecular assays showed, for the first time, that TH-induced CH is accompanied by reduced NLRP3 expression in the heart and that it occurs independently of the NLRP3 inflammasome and caspase 1-related pathways. However, NLRP3 is important for the maintenance of basal cardiac function since NLRP3-KO mice had impaired diastolic function and reduced heart rate, ejection fraction, and fractional shortening compared with WT mice.
Collapse
Affiliation(s)
- Aline Cristina Parletta
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Gabriela Cavazza Cerri
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Claudia Ribeiro Borba Gasparini
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Karine Panico
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Denival Nascimento Vieira-Junior
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Larissa Maria Zacarias-Rodrigues
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Nathalia Senger
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Amanda de Almeida Silva
- Department of Cardiopneumology, Heart Institute, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Marina Fevereiro
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
| | - Gabriela Placoná Diniz
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil
- Center for Regenerative Medicine, University of South Florida Health Heart Institute, Morsani School of Medicine, University of South Florida, Tampa, FL, USA
| | - Maria Cláudia Costa Irigoyen
- Department of Cardiopneumology, Heart Institute, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Maria Luiza Morais Barreto-Chaves
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil.
| |
Collapse
|
2
|
Zhao HZ, Liu CY, Song QJ, Guo H, Wen YJ, Wang FX. Acquisition of different transcriptional shear mRNA and biological function of porcine interleukin 18 binding protein in PRRSV infection. mBio 2024; 15:e0064024. [PMID: 38727246 DOI: 10.1128/mbio.00640-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 04/01/2024] [Indexed: 06/13/2024] Open
Abstract
Interleukin-18 binding protein (IL-18BP), a natural regulator molecule of the pro-inflammatory cytokine interleukin-18 (IL-18), plays an important role in regulating the expression of the cellular immunity factor interferon-γ (IFN-γ). In a previous RNA-seq analysis of porcine alveolar macrophages (PAM) infected with the TIM and TJ strains of porcine reproductive and respiratory syndrome virus (PRRSV), we unexpectedly found that the mRNA expression of porcine interleukin 18-binding protein (pIL-18BP) in PAM cells infected with the TJM strain was significantly higher than that infected with the TJ strain. Studies have shown that human interleukin-18 binding protein (hIL-18bp) plays an important role in regulating cellular immunity in the course of the disease. However, there is a research gap on pIL-18BP. At the same time, PRRSV infection in pigs triggers weak cellular immune response problems. To explore the expression and the role of pIL-18BP in the cellular immune response induced by PRRSV, we strived to acquire the pIL-18BP gene from PAM or peripheral blood mononuclear cell (PBMC) with RT-PCR and sequencing. Furthermore, pIL-18BP and pIL-18 were both expressed prokaryotically and eukaryotically. The colocalization and interaction based on recombinant pIL-18BP and pIL-18 on cells were confirmed in vitro. Finally, the expression of pIL-18BP, pIL-18, and pIFN-γ was explored in pigs with different PRRSV infection states to interpret the biological function of pIL-18BP in vivo. The results showed there were five shear mutants of pIL-18BP. The mutant with the longest coding region was selected for subsequent functional validation. First, it was demonstrated that TJM-induced pIL-18BP mRNA expression was higher than that of TJ. A direct interaction between pIL-18BP and pIL-18 was confirmed through fluorescence colocalization, bimolecular fluorescent complimentary (BIFC), and co-immunoprecipitation (CO-IP). pIL-18BP also can regulate pIFN-γ mRNA expression. Finally, the expression of pIL-18BP, pIL-18, and pIFN-γ was explored in different PRRSV infection states. Surprisingly, both mRNA and protein expression of pIL-18 were suppressed. These findings fill the gap in understanding the roles played by pIL-18BP in PRRSV infection and provide a foundation for further research.IMPORTANCEPRRSV-infected pigs elicit a weak cellular immune response and the mechanisms of cellular immune regulation induced by PRRSV have not yet been fully elucidated. In this study, we investigated the role of pIL-18BP in PRRSV-induced immune response referring to the regulation of human IL-18BP to human interferon-gamma (hIFN-γ). This is expected to be used as a method to enhance the cellular immune response induced by the PRRSV vaccine. Here, we mined five transcripts of the pIL-18BP gene and demonstrated that it interacts with pIL-18 and regulates pIFN-γ mRNA expression. Surprisingly, we also found that both mRNA and protein expression of pIL-18 were suppressed under different PRRSV strains of infection status. These results have led to a renewed understanding of the roles of pIL-18BP and pIL-18 in cellular immunity induced by PRRSV infection, which has important implications for the prevention and control of PRRS.
Collapse
Affiliation(s)
- Hong-Zhe Zhao
- Key Laboratory for Clinical Diagnosis and Treatment of Animal Diseases of Ministry of Agriculture, College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Chun-Yu Liu
- Medical Experiment Center, Inner Mongolia Medical University, Hohhot, China
| | - Qian-Jin Song
- Yinchuan Animal Husbandry Technology Extension Service Center, Yinchuan, China
| | - Hao Guo
- Key Laboratory for Clinical Diagnosis and Treatment of Animal Diseases of Ministry of Agriculture, College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Yong-Jun Wen
- Key Laboratory for Clinical Diagnosis and Treatment of Animal Diseases of Ministry of Agriculture, College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Feng-Xue Wang
- Key Laboratory for Clinical Diagnosis and Treatment of Animal Diseases of Ministry of Agriculture, College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| |
Collapse
|
3
|
The selective NLRP3 inflammasome inhibitor MCC950 improves isoproterenol-induced cardiac dysfunction by inhibiting cardiomyocyte senescence. Eur J Pharmacol 2022; 937:175364. [DOI: 10.1016/j.ejphar.2022.175364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/24/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
|
4
|
Park SY, Hisham Y, Shin HM, Yeom SC, Kim S. Interleukin-18 Binding Protein in Immune Regulation and Autoimmune Diseases. Biomedicines 2022; 10:biomedicines10071750. [PMID: 35885055 PMCID: PMC9313042 DOI: 10.3390/biomedicines10071750] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/13/2022] [Accepted: 07/16/2022] [Indexed: 12/28/2022] Open
Abstract
Natural soluble antagonist and decoy receptor on the surface of the cell membrane are evolving as crucial immune system regulators as these molecules are capable of recognizing, binding, and neutralizing (so-called inhibitors) their targeted ligands. Eventually, these soluble antagonists and decoy receptors terminate signaling by prohibiting ligands from connecting to their receptors on the surface of cell membrane. Interleukin-18 binding protein (IL-18BP) participates in regulating both Th1 and Th2 cytokines. IL-18BP is a soluble neutralizing protein belonging to the immunoglobulin (Ig) superfamily as it harbors a single Ig domain. The Ig domain is essential for its binding to the IL-18 ligand and holds partial homology to the IL-1 receptor 2 (IL-1R2) known as a decoy receptor of IL-1α and IL-1β. IL-18BP was defined as a unique soluble IL-18BP that is distinct from IL-18Rα and IL-18Rβ chain. IL-18BP is encoded by a separated gene, contains 8 exons, and is located at chr.11 q13.4 within the human genome. In this review, we address the difference in the biological activity of IL-18BP isoforms, in the immunity balancing Th1 and Th2 immune response, its critical role in autoimmune diseases, as well as current clinical trials of recombinant IL-18BP (rIL-18BP) or equivalent.
Collapse
Affiliation(s)
- Seung Yong Park
- College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea;
| | - Yasmin Hisham
- Laboratory of Cytokine Immunology, Department of Biomedical Science and Technology, Konkuk University, Seoul 05029, Korea;
| | - Hyun Mu Shin
- System Immunology, Wide River Institute of Immunology, Collage of Medicine, Seoul National University, Hongcheon-gun 25159, Korea;
| | - Su Cheong Yeom
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Korea;
| | - Soohyun Kim
- College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea;
- Laboratory of Cytokine Immunology, Department of Biomedical Science and Technology, Konkuk University, Seoul 05029, Korea;
- Correspondence: ; Tel.: +82-2-457-0868
| |
Collapse
|
5
|
Chen CY, Leu JG, Lin KY, Shih CY, Liang YJ. Serotonin receptor subtype-2B signaling is associated with interleukin-18-induced cardiomyoblast hypertrophy in vitro. ASIAN BIOMED 2022; 16:79-87. [PMID: 37551283 PMCID: PMC10321165 DOI: 10.2478/abm-2022-0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background In patients with heart failure, interleukin-18 (IL-18) levels increase in the circulatory system and injured myocardial tissue. Serotonin (5-hydroxytryptamine) receptors subtype 2B (HTR2B) play an essential role in cardiac function and development, and their overexpression in rats leads to myocardial hypertrophy. Epigallocatechin gallate (EGCG) is cardioprotective in myocardial ischemia-reperfusion injury in rats and can prevent pressure overload-mediated cardiac hypertrophy in vivo. Mice deficient in peroxisome proliferator-activated receptor delta (PPARδ) can have cardiac dysfunction, myocardial hypertrophy, and heart failure. Matrix metalloproteinases (MMPs) are possibly involved in cardiac remodeling. However, the relationship between IL-18 signaling, cardiac hypertrophy, and the molecular mechanisms involved remain to be fully elucidated. Objectives To elucidate the relationship between HTR2B and IL-18-induced myocardial hypertrophy and examine the antihypertrophic effects of EGCG and PPARδ. Methods We induced H9c2 cardiomyoblast hypertrophy with IL-18 in vitro and investigated the downstream signaling by real-time polymerase chain reaction (PCR) and western blotting. Hypertrophy was assessed by flow cytometry. We determined the effects of EGCG and PPARδ on IL-18-induced hypertrophic signaling via HTR2B-dependent mechanisms. Results IL-18-induced H9c2 hypertrophy upregulated brain natriuretic peptide (BNP) protein and mRNA expression by inducing the expression of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and the hypertrophy was attenuated by pretreatment with EGCG (20 μM) and L-165,041 (2 μM), a PPARδ agonist. IL-18 upregulated the expression of HTR2B, which was inhibited by pretreatment with EGCG and L-165,041. SB215505 (0.1 μM), a HTR2B antagonist and siRNA for HTR2B, attenuated H9c2 hypertrophy significantly. Inhibition of HTR2B also downregulated the expression of MMP-3 and MMP-9. Conclusions IL-18 and HTR2B play critical roles in cardiomyoblast hypertrophy. EGCG and L-165,041 inhibit the expression of HTR2B and augment remodeling of H9c2 cardiomyoblasts, possibly mediated by MMP-3 and MMP-9.
Collapse
Affiliation(s)
- Chao-Yi Chen
- Graduate Institute of Applied Science and Engineering, Fu-Jen Catholic University, New Taipei City242062, Taiwan
- Department and Institute of Life Science, Fu-Jen Catholic University, New Taipei City242062, Taiwan
| | - Jyh-Gang Leu
- Fu-Jen Catholic University School of Medicine, New Taipei City242062, Taiwan
- Division of Nephrology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei111, Taiwan
| | - Kuan-Yu Lin
- Department and Institute of Life Science, Fu-Jen Catholic University, New Taipei City242062, Taiwan
| | - Chin-Yu Shih
- Graduate Institute of Applied Science and Engineering, Fu-Jen Catholic University, New Taipei City242062, Taiwan
| | - Yao-Jen Liang
- Graduate Institute of Applied Science and Engineering, Fu-Jen Catholic University, New Taipei City242062, Taiwan
- Department and Institute of Life Science, Fu-Jen Catholic University, New Taipei City242062, Taiwan
| |
Collapse
|
6
|
Tesoro L, Ramirez-Carracedo R, Hernandez I, Diez-Mata J, Pascual M, Saura M, Sanmartin M, Zamorano JL, Zaragoza C. La ivabradina induce cardioprotección previniendo la degradación de la matriz extracelular inducida por shock cardiogénico. Rev Esp Cardiol 2021. [DOI: 10.1016/j.recesp.2020.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
7
|
Kumar R, Jain V, Kushwah N, Dheer A, Mishra KP, Prasad D, Singh SB. HDAC inhibition prevents hypobaric hypoxia-induced spatial memory impairment through PΙ3K/GSK3β/CREB pathway. J Cell Physiol 2021; 236:6754-6771. [PMID: 33788269 DOI: 10.1002/jcp.30337] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/05/2021] [Accepted: 02/09/2021] [Indexed: 12/14/2022]
Abstract
Hypobaric hypoxia at higher altitudes usually impairs cognitive function. Previous studies suggested that epigenetic modifications are the culprits for this condition. Here, we set out to determine how hypobaric hypoxia mediates epigenetic modifications and how this condition worsens neurodegeneration and memory loss in rats. In the current study, different duration of hypobaric hypoxia exposure showed a discrete pattern of histone acetyltransferases and histone deacetylases (HDACs) gene expression in the hippocampus when compared with control rat brains. The level of acetylation sites in histone H2A, H3 and H4 was significantly decreased under hypobaric hypoxia exposure compared to the control rat's hippocampus. Additionally, inhibiting the HDAC family with sodium butyrate administration (1.2 g/kg body weight) attenuated neurodegeneration and memory loss in hypobaric hypoxia-exposed rats. Moreover, histone acetylation increased at the promoter regions of brain-derived neurotrophic factor (BDNF); thereby its protein expression was enhanced significantly in hypobaric hypoxia exposed rats treated with HDAC inhibitor compared with hypoxic rats. Thus, BDNF expression upregulated cAMP-response element binding protein (CREB) phosphorylation by stimulation of PI3K/GSK3β/CREB axis, which counteracts hypobaric hypoxia-induced spatial memory impairment. In conclusion, these results suggested that sodium butyrate is a novel therapeutic agent for the treatment of spatial memory loss associated with hypobaric hypoxia, and also further studies are warranted to explore specific HDAC inhibitors in this condition.
Collapse
Affiliation(s)
- Rahul Kumar
- Neurobiology Division, Defence Institute of Physiology and Allied Science (DIPAS), DRDO, Timarpur, New Delhi, India
| | - Vishal Jain
- Neurophysiology Division, Defence Institute of Physiology and Allied Science (DIPAS), DRDO, Timarpur, New Delhi, India
| | - Neetu Kushwah
- Neurobiology Division, Defence Institute of Physiology and Allied Science (DIPAS), DRDO, Timarpur, New Delhi, India
| | - Aastha Dheer
- Neurobiology Division, Defence Institute of Physiology and Allied Science (DIPAS), DRDO, Timarpur, New Delhi, India
| | | | - Dipti Prasad
- Neurobiology Division, Defence Institute of Physiology and Allied Science (DIPAS), DRDO, Timarpur, New Delhi, India
| | - Shashi Bala Singh
- National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| |
Collapse
|
8
|
Tesoro L, Ramirez-Carracedo R, Hernandez I, Diez-Mata J, Pascual M, Saura M, Sanmartin M, Zamorano JL, Zaragoza C. Ivabradine induces cardiac protection by preventing cardiogenic shock-induced extracellular matrix degradation. ACTA ACUST UNITED AC 2020; 74:1062-1071. [PMID: 33132099 DOI: 10.1016/j.rec.2020.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 09/11/2020] [Indexed: 02/07/2023]
Abstract
INTRODUCTION AND OBJECTIVES Ivabradine reduces heart rate by blocking the I(f) current and preserves blood pressure and stroke volume through unknown mechanisms. Caveolin-3 protects the heart by forming protein complexes with several proteins, including extracellular matrix (ECM)-metalloproteinase-inducer (EMMPRIN) and hyperpolarization-activated cyclic nucleotide-gated channel 4 (HN4), a target of ivabradine. We hypothesized that ivabradine might also exert cardioprotective effects through inhibition of ECM degradation. METHODS In a porcine model of cardiogenic shock, we studied the effects of ivabradine on heart integrity, the levels of MMP-9 and EMMPRIN, and the stability of caveolin-3/HCN4 protein complexes with EMMPRIN. RESULTS Administration of 0.3 mg/kg ivabradine significantly reduced cardiogenic shock-induced ventricular necrosis and expression of MMP-9 without affecting EMMPRIN mRNA, protein, or protein glycosylation (required for MMP activation). However, ivabradine increased the levels of the caveolin-3/LG-EMMPRIN (low-glycosylated EMMPRIN) and caveolin-3/HCN4 protein complexes and decreased that of a new complex between HCN4 and high-glycosylated EMMPRIN formed in response to cardiogenic shock. We next tested whether caveolin-3 can bind to HCN4 and EMMPRIN and found that the HCN4/EMMPRIN complex was preserved when we silenced caveolin-3 expression, indicating a direct interaction between these 2 proteins. Similarly, EMMPRIN-silenced cells showed a significant reduction in the binding of caveolin-3/HCN4, which regulates the I(f) current, suggesting that, rather than a direct interaction, both proteins bind to EMMPRIN. CONCLUSIONS In addition to inhibition of the I(f) current, ivabradine may induce cardiac protection by inhibiting ECM degradation through preservation of the caveolin-3/LG-EMMPRIN complex and control heart rate by stabilizing the caveolin-3/HCN4 complex.
Collapse
Affiliation(s)
- Laura Tesoro
- Unidad de Investigación Cardiovascular, Departamento de Cardiología, Universidad Francisco de Vitoria, Hospital Ramón y Cajal (IRYCIS), Madrid, Spain; Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain
| | | | - Ignacio Hernandez
- Unidad de Investigación Cardiovascular, Departamento de Cardiología, Universidad Francisco de Vitoria, Hospital Ramón y Cajal (IRYCIS), Madrid, Spain; Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - Javier Diez-Mata
- Unidad de Investigación Cardiovascular, Departamento de Cardiología, Universidad Francisco de Vitoria, Hospital Ramón y Cajal (IRYCIS), Madrid, Spain; Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain
| | - Marina Pascual
- Departamento de Cardiología, Hospital Universitario Ramón y Cajal (IRYCIS), Madrid, Spain
| | - Marta Saura
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain; Unidad de Fisiología, Departamento de Biología de Sistemas, Universidad de Alcalá (IRYCIS). Alcalá de Henares, Madrid, Spain
| | - Marcelo Sanmartin
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain; Departamento de Cardiología, Hospital Universitario Ramón y Cajal (IRYCIS), Madrid, Spain
| | - José Luis Zamorano
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain; Departamento de Cardiología, Hospital Universitario Ramón y Cajal (IRYCIS), Madrid, Spain
| | - Carlos Zaragoza
- Unidad de Investigación Cardiovascular, Departamento de Cardiología, Universidad Francisco de Vitoria, Hospital Ramón y Cajal (IRYCIS), Madrid, Spain; Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Spain.
| |
Collapse
|
9
|
Mourouzis K, Oikonomou E, Siasos G, Tsalamadris S, Vogiatzi G, Antonopoulos A, Fountoulakis P, Goliopoulou A, Papaioannou S, Tousoulis D. Pro-inflammatory Cytokines in Acute Coronary Syndromes. Curr Pharm Des 2020; 26:4624-4647. [PMID: 32282296 DOI: 10.2174/1381612826666200413082353] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/01/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Over the last decades, the role of inflammation and immune system activation in the initiation and progression of coronary artery disease (CAD) has been established. OBJECTIVES The study aimed to present the interplay between cytokines and their actions preceding and shortly after ACS. METHODS We searched in a systemic manner the most relevant articles to the topic of inflammation, cytokines, vulnerable plaque and myocardial infarction in MEDLINE, COCHRANE and EMBASE databases. RESULTS Different classes of cytokines (intereleukin [IL]-1 family, Tumor necrosis factor-alpha (TNF-α) family, chemokines, adipokines, interferons) are implicated in the entire process leading to destabilization of the atherosclerotic plaque, and consequently, to the incidence of myocardial infarction. Especially IL-1 and TNF-α family are involved in inflammatory cell accumulation, vulnerable plaque formation, platelet aggregation, cardiomyocyte apoptosis and adverse remodeling following the myocardial infarction. Several cytokines such as IL-6, adiponectin, interferon-γ, appear with significant prognostic value in ACS patients. Thus, research interest focuses on the modulation of inflammation in ACS to improve clinical outcomes. CONCLUSION Understanding the unique characteristics that accompany each cytokine-cytokine receptor interaction could illuminate the signaling pathways involved in plaque destabilization and indicate future treatment strategies to improve cardiovascular prognosis in ACS patients.
Collapse
Affiliation(s)
- Konstantinos Mourouzis
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Evangelos Oikonomou
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Gerasimos Siasos
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Sotiris Tsalamadris
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Georgia Vogiatzi
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Alexios Antonopoulos
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Petros Fountoulakis
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Athina Goliopoulou
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Spyridon Papaioannou
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Dimitris Tousoulis
- 1st Department of Cardiology, 'Hippokration' Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| |
Collapse
|
10
|
Sun J, Hao W, Fillmore N, Ma H, Springer D, Yu ZX, Sadowska A, Garcia A, Chen R, Muniz-Medina V, Rosenthal K, Lin J, Kuruvilla D, Osbourn J, Karathanasis SK, Walker J, Murphy E. Human Relaxin-2 Fusion Protein Treatment Prevents and Reverses Isoproterenol-Induced Hypertrophy and Fibrosis in Mouse Heart. J Am Heart Assoc 2019; 8:e013465. [PMID: 31818212 PMCID: PMC6951077 DOI: 10.1161/jaha.119.013465] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background Heart failure is one of the leading causes of death in Western countries, and there is a need for new therapeutic approaches. Relaxin‐2 is a peptide hormone that mediates pleiotropic cardiovascular effects, including antifibrotic, angiogenic, vasodilatory, antiapoptotic, and anti‐inflammatory effects in vitro and in vivo. Methods and Results We developed RELAX10, a fusion protein composed of human relaxin‐2 hormone and the Fc of a human antibody, to test the hypothesis that extended exposure of the relaxin‐2 peptide could reduce cardiac hypertrophy and fibrosis. RELAX10 demonstrated the same specificity and similar in vitro activity as the relaxin‐2 peptide. The terminal half‐life of RELAX10 was 7 days in mouse and 3.75 days in rat after subcutaneous administration. We evaluated whether treatment with RELAX10 could prevent and reverse isoproterenol‐induced cardiac hypertrophy and fibrosis in mice. Isoproterenol administration in mice resulted in increased cardiac hypertrophy and fibrosis compared with vehicle. Coadministration with RELAX10 significantly attenuated the cardiac hypertrophy and fibrosis compared with untreated animals. Isoproterenol administration significantly increased transforming growth factor β1 (TGF‐β1)–induced fibrotic signaling, which was attenuated by RELAX10. We found that RELAX10 also significantly increased protein kinase B/endothelial NO synthase signaling and protein S‐nitrosylation. In the reversal study, RELAX10‐treated animals showed significantly reduced cardiac hypertrophy and collagen levels. Conclusions These findings support a potential role for RELAX10 in the treatment of heart failure.
Collapse
Affiliation(s)
- Junhui Sun
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | | | - Natasha Fillmore
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | - Hanley Ma
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | - Danielle Springer
- Murine Phenotyping Core National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | - Zu-Xi Yu
- Pathology Core National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | | | | | | | | | | | | | | | | | | | | | - Elizabeth Murphy
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| |
Collapse
|
11
|
Mühl H, Bachmann M. IL-18/IL-18BP and IL-22/IL-22BP: Two interrelated couples with therapeutic potential. Cell Signal 2019; 63:109388. [PMID: 31401146 DOI: 10.1016/j.cellsig.2019.109388] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/07/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023]
Abstract
Interleukin (IL)-18 and IL-22 are key components of cytokine networks that play a decisive role in (pathological) inflammation, host defense, and tissue regeneration. Tight regulation of cytokine-driven signaling, inflammation, and immunoactivation is supposed to enable nullification of a given deleterious trigger without mediating overwhelming collateral tissue damage or even activating a cancerous face of regeneration. In fact, feedback regulation by specific cytokine opponents is regarded as a major means by which the immune system is kept in balance. Herein, we shine a light on the interplay between IL-18 and IL-22 and their opponents IL-18 binding protein (IL-18BP) and IL-22BP in order to provide integrated information on their biology, pathophysiological significance, and prospect as targets and/or instruments of therapeutic intervention.
Collapse
Affiliation(s)
- Heiko Mühl
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe University Frankfurt am Main, Theodor-Stern- Kai 7, 60590 Frankfurt am Main, Germany.
| | - Malte Bachmann
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe University Frankfurt am Main, Theodor-Stern- Kai 7, 60590 Frankfurt am Main, Germany
| |
Collapse
|
12
|
Brand CS, Lighthouse JK, Trembley MA. Protective transcriptional mechanisms in cardiomyocytes and cardiac fibroblasts. J Mol Cell Cardiol 2019; 132:1-12. [PMID: 31042488 DOI: 10.1016/j.yjmcc.2019.04.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/19/2019] [Accepted: 04/22/2019] [Indexed: 12/13/2022]
Abstract
Heart failure is the leading cause of morbidity and mortality worldwide. Several lines of evidence suggest that physical activity and exercise can pre-condition the heart to improve the response to acute cardiac injury such as myocardial infarction or ischemia/reperfusion injury, preventing the progression to heart failure. It is becoming more apparent that cardioprotection is a concerted effort between multiple cell types and converging signaling pathways. However, the molecular mechanisms of cardioprotection are not completely understood. What is clear is that the mechanisms underlying this protection involve acute activation of transcriptional activators and their corresponding gene expression programs. Here, we review the known stress-dependent transcriptional programs that are activated in cardiomyocytes and cardiac fibroblasts to preserve function in the adult heart after injury. Focus is given to prominent transcriptional pathways such as mechanical stress or reactive oxygen species (ROS)-dependent activation of myocardin-related transcription factors (MRTFs) and transforming growth factor beta (TGFβ), and gene expression that positively regulates protective PI3K/Akt signaling. Together, these pathways modulate both beneficial and pathological responses to cardiac injury in a cell-specific manner.
Collapse
Affiliation(s)
- Cameron S Brand
- Department of Pharmacology, School of Medicine, University of California - San Diego, 9500 Gilman Drive, Biomedical Sciences Building, La Jolla, CA 92093, USA.
| | - Janet K Lighthouse
- Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Box CVRI, Rochester, NY 14624, USA.
| | - Michael A Trembley
- Department of Cardiology, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA.
| |
Collapse
|
13
|
Vemuri SK, Nethi SK, Banala RR, Goli PVS, Annapareddy VGR, Patra CR. Europium Hydroxide Nanorods (EHNs) Ameliorate Isoproterenol-Induced Myocardial Infarction: An in Vitro and in Vivo Investigation. ACS APPLIED BIO MATERIALS 2019; 2:1078-1087. [DOI: 10.1021/acsabm.8b00669] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Susheel Kumar Nethi
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, Telangana State 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | | | | | | | - Chitta Ranjan Patra
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, Telangana State 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| |
Collapse
|
14
|
Liu X, Yang H, Liu Y, Jiao Y, Yang L, Wang X, Yu W, Su D, Tian J. Remifentanil upregulates hepatic IL-18 binding protein (IL-18BP) expression through transcriptional control. J Transl Med 2018; 98:1588-1599. [PMID: 30089853 DOI: 10.1038/s41374-018-0111-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 06/17/2018] [Accepted: 07/01/2018] [Indexed: 01/01/2023] Open
Abstract
Interleukin (IL)-18 plays an important role in liver ischemia/reperfusion (I/R) injury. We have previously demonstrated that remifentanil protects against liver I/R injury by upregulating the hepatic expression of IL-18-binding protein (IL-18BP), a natural IL-18 inhibitor. The current study was performed to further clarify the effects of remifentanil on IL-18BP expression in the liver as well as investigate the underlying mechanisms. In Sprague-Dawley (SD) rats, we demonstrated that remifentanil significantly increased the expression of IL-18BP in normal rat liver tissue over a 24-h time period with maximal expression at 24 h after treatment. The upregulation of remifentanil on IL-18BP expression displayed similar trends in in vitro cellular studies, including mouse primary hepatocytes, normal human hepatocyte LO2, and mouse hepatoma cells Hep1-6. In LO2 cells, preexposure of the cells to remifentanil significantly inhibited IL-18-activated p65 NF-κB phosphorylation, and the inhibition was absent when the cells were transfected with IL-18BP siRNA, indicating the functional effects of IL-18BP induced by remifentanil. Pretreatment with actinomycin D abolished remifentanil-induced upregulation of IL-18BP mRNA, suggesting that the induction occurred at the transcriptional level. This was further supported by the luciferase reporter assay, which demonstrated that remifentanil treatment significantly increased transcription of the IL-18BP promoter. Both western blot analysis and ChIP assays showed that STAT1 and C/EBP β were activated by remifentanil. Furthermore, remifentanil failed to upregulate IL-18BP expression after silencing STAT1 or C/EBP β gene expression. These findings demonstrate that remifentanil could upregulate hepatic IL-18BP expression through transcriptional activation of the IL-18BP promoter, and STAT1 and C/EBP β are two key transcriptional factors involved in this process.
Collapse
Affiliation(s)
- Xiaohua Liu
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China
| | - Hao Yang
- Department of Anesthesiology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Rd, Shanghai, 200433, China
| | - Yan Liu
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China
| | - Yingfu Jiao
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China
| | - Liqun Yang
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China
| | - Xiangrui Wang
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China
| | - Weifeng Yu
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China
| | - Diansan Su
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China.
| | - Jie Tian
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Rd, Shanghai, 200127, China.
| |
Collapse
|
15
|
Hori Y, Touei D, Saitoh R, Yamagishi M, Kanai K, Hoshi F, Itoh N. The Aldosterone Receptor Antagonist Eplerenone Inhibits Isoproterenol-Induced Collagen-I and 11β-HSD1 Expression in Rat Cardiac Fibroblasts and the Left Ventricle. Biol Pharm Bull 2018; 40:1716-1723. [PMID: 28966243 DOI: 10.1248/bpb.b17-00291] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
β-Adrenergic receptor (β-AR)-induction of collagen-I synthesis is partially mediated by the cardiac mineralocorticoid receptor (MR) system. However, it remains unclear whether the selective MR antagonist, eplerenone, inhibits collagen-I synthesis induced by β-AR stimulation. We investigated the effects of eplerenone on the responses to a non-selective β-AR agonist, isoproterenol, which induced collagen-I synthesis in primary cardiac fibroblasts (CFs) and the left ventricle. mRNAs encoding the MR and 11β-hydroxysteroid dehydrogenase type I (11β-HSD1) were evident in the left ventricle and primary CFs. mRNAs encoding the CYP family 11 subfamily B member 2 (CYP11-B2) were not detected, even after isoproterenol treatment. In vivo, isoproterenol induced collagenous fiber accumulation in the left ventricle. The phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2), 11β-HSD1 levels, and mRNA/protein levels of collagen-I increased upon exposure to isoproterenol, but these increases were inhibited by eplerenone co-treatment. In primary CFs, isoproterenol increased the phosphorylation of ERK1/2 and the expression levels of both 11β-HSD1 and collagen-I; these isoproterenol-attributable effects were inhibited by co-treatment with eplerenone and PD98059, a specific inhibitor of mitogen-activated protein kinase/ERK kinase activity. The results suggest that 11β-HSD1 but not CYP11-B2 is expressed in primary CFs. Eplerenone inhibited isoproterenol-induced ERK1/2 phosphorylation and expression of 11β-HSD1 and collagen-I in primary CFs, as well as the progression of cardiac fibrosis in the left ventricle. Therefore, eplerenone inhibited the isoproterenol-induced increases in 11β-HSD1 and collagen-I expression in primary CFs, and progression of cardiac fibrosis in the left ventricle.
Collapse
Affiliation(s)
- Yasutomo Hori
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| | - Daisuke Touei
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| | - Ryuta Saitoh
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| | - Maki Yamagishi
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| | - Kazutaka Kanai
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| | - Fumio Hoshi
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| | - Naoyuki Itoh
- Laboratory of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University
| |
Collapse
|
16
|
Abstract
The interleukin-1 (IL-1) family of cytokines and receptors is unique in immunology because the IL-1 family and Toll-like receptor (TLR) families share similar functions. More than any other cytokine family, the IL-1 family is primarily associated with innate immunity. More than 95% of living organisms use innate immune mechanisms for survival whereas less than 5% depend on T- and B-cell functions. Innate immunity is manifested by inflammation, which can function as a mechanism of host defense but when uncontrolled is detrimental to survival. Each member of the IL-1 receptor and TLR family contains the cytoplasmic Toll-IL-1-Receptor (TIR) domain. The 50 amino acid TIR domains are highly homologous with the Toll protein in Drosophila. The TIR domain is nearly the same and present in each TLR and each IL-1 receptor family. Whereas IL-1 family cytokine members trigger innate inflammation via IL-1 family of receptors, TLRs trigger inflammation via bacteria, microbial products, viruses, nucleic acids, and damage-associated molecular patterns (DAMPs). In fact, IL-1 family member IL-1a and IL-33 also function as DAMPs. Although the inflammatory properties of the IL-1 family dominate in innate immunity, IL-1 family member can play a role in acquired immunity. This overview is a condensed update of the IL-1 family of cytokines and receptors.
Collapse
Affiliation(s)
- Charles A. Dinarello
- Department of Medicine, University of Colorado Denver, Aurora, CO, USA
- Department of Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| |
Collapse
|
17
|
Yang YH, Fang HL, Zhao M, Wei XL, Zhang N, Wang S, Lu Y, Yu XJ, Sun L, He X, Li DL, Liu JJ, Zang WJ. Specific α7 nicotinic acetylcholine receptor agonist ameliorates isoproterenol-induced cardiac remodelling in mice through TGF-β1/Smad3 pathway. Clin Exp Pharmacol Physiol 2017; 44:1192-1200. [PMID: 28732106 DOI: 10.1111/1440-1681.12819] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 06/15/2017] [Accepted: 07/11/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Yong-Hua Yang
- Department of Paediatrics; the First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Huan-Le Fang
- Department of Medicine; Medical College of Xi'an Pei Hua University; Xi'an China
| | - Ming Zhao
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Xiang-Lan Wei
- Department of Pharmacy; Xi'an Chest and Tuberculosis Hospital; Xi'an China
| | - Ning Zhang
- Department of Clinical Laboratory; the First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - Shun Wang
- Department of Cardiology; the First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - Yi Lu
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Xiao-Jiang Yu
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Lei Sun
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Xi He
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Dong-Ling Li
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Jin-Jun Liu
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| | - Wei-Jin Zang
- Department of Pharmacology; Xi'an Jiaotong University; Health Science Centre; Xi'an China
| |
Collapse
|
18
|
Fu Q, Wang Q, Xiang YK. Insulin and β Adrenergic Receptor Signaling: Crosstalk in Heart. Trends Endocrinol Metab 2017; 28:416-427. [PMID: 28256297 PMCID: PMC5535765 DOI: 10.1016/j.tem.2017.02.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 01/29/2017] [Accepted: 02/01/2017] [Indexed: 02/03/2023]
Abstract
Recent advances show that insulin may affect β adrenergic receptor (βAR) signaling in the heart to modulate cardiac function in clinically relevant states, such as diabetes mellitus (DM) and heart failure (HF). Conversely, activation of βAR regulates cardiac glucose uptake and promotes insulin resistance (IR) in HF. Here, we discuss the recent characterization of the interaction between the cardiac insulin receptor (InsR) and βAR in the myocardium, in which insulin stimulation crosstalks with cardiac βAR via InsR substrate (IRS)-dependent and G-protein receptor kinase 2 (GRK2)-mediated phosphorylation of β2AR. The insulin-induced phosphorylation promotes β2AR coupling to Gi and expression of phosphodiesterase 4D, which both inhibit cardiac adrenergic signaling and compromise cardiac contractile function. These recent developments could support new approaches for the effective prevention or treatment of obesity- or DM-related HF.
Collapse
Affiliation(s)
- Qin Fu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, Huazhong University of Science and Technology, Wuhan, China.
| | - Qingtong Wang
- Institute of Clinical Pharmacology, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Anhui Medical University, Hefei, China.
| | - Yang K Xiang
- Department of Pharmacology, University of California, Davis, CA, USA; VA Northern California Health Care System, Mather, CA, USA.
| |
Collapse
|
19
|
PDE1C deficiency antagonizes pathological cardiac remodeling and dysfunction. Proc Natl Acad Sci U S A 2016; 113:E7116-E7125. [PMID: 27791092 DOI: 10.1073/pnas.1607728113] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Cyclic nucleotide phosphodiesterase 1C (PDE1C) represents a major phosphodiesterase activity in human myocardium, but its function in the heart remains unknown. Using genetic and pharmacological approaches, we studied the expression, regulation, function, and underlying mechanisms of PDE1C in the pathogenesis of cardiac remodeling and dysfunction. PDE1C expression is up-regulated in mouse and human failing hearts and is highly expressed in cardiac myocytes but not in fibroblasts. In adult mouse cardiac myocytes, PDE1C deficiency or inhibition attenuated myocyte death and apoptosis, which was largely dependent on cyclic AMP/PKA and PI3K/AKT signaling. PDE1C deficiency also attenuated cardiac myocyte hypertrophy in a PKA-dependent manner. Conditioned medium taken from PDE1C-deficient cardiac myocytes attenuated TGF-β-stimulated cardiac fibroblast activation through a mechanism involving the crosstalk between cardiac myocytes and fibroblasts. In vivo, cardiac remodeling and dysfunction induced by transverse aortic constriction, including myocardial hypertrophy, apoptosis, cardiac fibrosis, and loss of contractile function, were significantly attenuated in PDE1C-knockout mice relative to wild-type mice. These results indicate that PDE1C activation plays a causative role in pathological cardiac remodeling and dysfunction. Given the continued development of highly specific PDE1 inhibitors and the high expression level of PDE1C in the human heart, our findings could have considerable therapeutic significance.
Collapse
|
20
|
Xu C, Tang F, Lu M, Yang J, Han R, Mei M, Hu J, Zhou M, Wang H. Astragaloside IV improves the isoproterenol-induced vascular dysfunction via attenuating eNOS uncoupling-mediated oxidative stress and inhibiting ROS-NF-κB pathways. Int Immunopharmacol 2016; 33:119-27. [PMID: 26903414 DOI: 10.1016/j.intimp.2016.02.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 12/24/2015] [Accepted: 02/08/2016] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Oxidative stress and inflammation are regarded as two important triggers of endothelial dysfunction and play pivotal role in progression of vascular damage associated with cardiac hypertrophy. Our previous studies demonstrated that astragaloside IV (AsIV) could protect against cardiac hypertrophy in rats induced by isoproterenol (Iso), but its effects on the aorta are not known. In present study, we aimed to assess the effects of AsIV on Isoinduced vascular dysfunction. METHODS Sprague-Dawley (SD) rats were treated with Iso (10mg/kg/d) alone or in combination with AsIV (50mg/kg/d). RESULTS Compared with Isotreated alone, AsIV significantly reduced the ratios of heart weight/body weight and left ventricular weight/body weight. AsIV ameliorated the increased vasoconstriction response to phenylephrine induced by Iso and suppressed superoxide anion generation in rat aorta, increased endothelial nitric oxide synthase (eNOS) dimer/monomer ratio and its critical cofactor tetrahydrobiopterin (BH4) content in aorta as well as the NO production in the serum, reduced the plasmatic peroxynitrite (ONOO-). Moreover, in contrast with Isotreatment alone, AsIV decreased the ratio of nuclear-to-cytosolic protein expression of the NF-κB p65 subunit while enhanced its inhibited protein expression of IκB-α, down-regulated mRNA expression of IL-1β, IL-6 and TNF-α of the aorta. CONCLUSIONS The present study suggested that AsIV protects against Isoinduced vascular dysfunction probably via attenuating eNOS uncoupling-mediated oxidative stress and inhibiting ROS-NF-κB pathways.
Collapse
Affiliation(s)
- Chonghua Xu
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Futian Tang
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Meili Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Jing Yang
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Ronghui Han
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Meng Mei
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Jin Hu
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Mingsheng Zhou
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China
| | - Hongxin Wang
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Liaoning Medical College, Jinzhou 121001, China.
| |
Collapse
|
21
|
Takahashi Y, Tanaka H, Nakai K, Kitami S, Murakami F, Morita T, Tanabe N, Kawato T, Maeno M. RANKL Induces IL-18 Binding Protein Expression in RAW264.7 Cells. J HARD TISSUE BIOL 2016. [DOI: 10.2485/jhtb.25.173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Hideki Tanaka
- Department of Oral Health Sciences, Nihon University School of Dentistry
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry
| | - Kumiko Nakai
- Department of Oral Health Sciences, Nihon University School of Dentistry
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry
| | - Satoshi Kitami
- Department of Oral Health Sciences, Nihon University School of Dentistry
| | | | - Toyoko Morita
- Department of Oral Health Sciences, Nihon University School of Dentistry
- The Lion Foundation for Dental Health
| | - Natsuko Tanabe
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry
- Department of Biochemistry, Nihon University School of Dentistry
| | - Takayuki Kawato
- Department of Oral Health Sciences, Nihon University School of Dentistry
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry
| | - Masao Maeno
- Department of Oral Health Sciences, Nihon University School of Dentistry
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry
| |
Collapse
|
22
|
Sysa-Shah P, Tocchetti CG, Gupta M, Rainer PP, Shen X, Kang BH, Belmonte F, Li J, Xu Y, Guo X, Bedja D, Gao WD, Paolocci N, Rath R, Sawyer DB, Naga Prasad SV, Gabrielson K. Bidirectional cross-regulation between ErbB2 and β-adrenergic signalling pathways. Cardiovasc Res 2015; 109:358-73. [PMID: 26692570 DOI: 10.1093/cvr/cvv274] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 12/01/2015] [Indexed: 12/31/2022] Open
Abstract
AIMS Despite the observation that ErbB2 regulates sensitivity of the heart to doxorubicin or ErbB2-targeted cancer therapies, mechanisms that regulate ErbB2 expression and activity have not been studied. Since isoproterenol up-regulates ErbB2 in kidney and salivary glands and β2AR and ErbB2 complex in brain and heart, we hypothesized that β-adrenergic receptors (AR) modulate ErbB2 signalling status. METHODS AND RESULTS ErbB2 transfection of HEK293 cells up-regulates β2AR, and β2AR transfection of HEK293 up-regulates ErbB2. Interestingly, cardiomyocytes isolated from myocyte-specific ErbB2-overexpressing (ErbB2(tg)) mice have amplified response to selective β2-agonist zinterol, and right ventricular trabeculae baseline force generation is markedly reduced with β2-antagonist ICI-118 551. Consistently, receptor binding assays and western blotting demonstrate that β2ARs levels are markedly increased in ErbB2(tg) myocardium and reduced by EGFR/ErbB2 inhibitor, lapatinib. Intriguingly, acute treatment of mice with β1- and β2-AR agonist isoproterenol resulted in myocardial ErbB2 increase, while inhibition with either β1- or β2-AR antagonist did not completely prevent isoproterenol-induced ErbB2 expression. Furthermore, inhibition of ErbB2 kinase predisposed mice hearts to injury from chronic isoproterenol treatment while significantly reducing isoproterenol-induced pAKT and pERK levels, suggesting ErbB2's role in transactivation in the heart. CONCLUSION Our studies show that myocardial ErbB2 and βAR signalling are linked in a feedback loop with βAR activation leading to increased ErbB2 expression and activity, and increased ErbB2 activity regulating β2AR expression. Most importantly, ErbB2 kinase activity is crucial for cardioprotection in the setting of β-adrenergic stress, suggesting that this mechanism is important in the pathophysiology and treatment of cardiomyopathy induced by ErbB2-targeting antineoplastic drugs.
Collapse
Affiliation(s)
- Polina Sysa-Shah
- Department of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, MRB 807, 733 N. Broadway, Baltimore, MD 21205, USA
| | - Carlo G Tocchetti
- Division of Internal Medicine, Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Manveen Gupta
- Department of Molecular Cardiology, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Peter P Rainer
- Division of Cardiology, Department of Medicine, Medical University of Graz, Graz, Austria Division of Cardiology, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Xiaoxu Shen
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Byung-Hak Kang
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Frances Belmonte
- Department of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, MRB 807, 733 N. Broadway, Baltimore, MD 21205, USA
| | - Jian Li
- Clinical Laboratory, Chinese PLA General Hospital, Beijing, China
| | - Yi Xu
- Department of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, MRB 807, 733 N. Broadway, Baltimore, MD 21205, USA
| | - Xin Guo
- Department of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, MRB 807, 733 N. Broadway, Baltimore, MD 21205, USA
| | - Djahida Bedja
- Department of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, MRB 807, 733 N. Broadway, Baltimore, MD 21205, USA
| | - Wei Dong Gao
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Nazareno Paolocci
- Division of Cardiology, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Rutwik Rath
- Cardiovascular Services, Maine Medical Center, Portland, ME, USA
| | - Douglas B Sawyer
- Cardiovascular Services, Maine Medical Center, Portland, ME, USA
| | | | - Kathleen Gabrielson
- Department of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, MRB 807, 733 N. Broadway, Baltimore, MD 21205, USA
| |
Collapse
|
23
|
Chien PTY, Lin CC, Hsiao LD, Yang CM. c-Src/Pyk2/EGFR/PI3K/Akt/CREB-activated pathway contributes to human cardiomyocyte hypertrophy: Role of COX-2 induction. Mol Cell Endocrinol 2015; 409:59-72. [PMID: 25869400 DOI: 10.1016/j.mce.2015.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/23/2015] [Accepted: 04/07/2015] [Indexed: 12/27/2022]
Abstract
Thrombin and COX-2 regulating cardiac hypertrophy are via various signaling cascades. Several transcriptional factors including CREB involve in COX-2 expression. However, the interplay among thrombin, CREB, and COX-2 in primary human neonatal ventricular cardiomyocytes remains unclear. In this study, thrombin-induced COX-2 promoter activity, mRNA and protein expression, and PGE2 synthesis were attenuated by pretreatment with the inhibitors of c-Src (PP1), Pyk2 (PF431396), EGFR (AG1478), PI3K/Akt (LY294002/SH-5), and p300 (GR343), or transfection with siRNAs of c-Src, Pyk2, EGFR, p110, Akt, CREB, and p300. Moreover, thrombin-stimulated phosphorylation of c-Src, Pyk2, EGFR, Akt, CREB and p300 was attenuated by their respective inhibitors. These results indicate that thrombin-induced COX-2 expression is mediated through PAR-1/c-Src/Pyk2/EGFR/PI3K/Akt linking to CREB and p300 cascades. Functionally, thrombin-induced hypertrophy and ANF/BNP release were, at least in part, mediated through a PAR-1/COX-2-dependent pathway. We uncover the importance of COX-2 regarding human cardiomyocyte hypertrophy that will provide a therapeutic intervention in cardiovascular diseases.
Collapse
Affiliation(s)
- Peter Tzu-Yu Chien
- Graduate Institute of Biomedical Sciences, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Chih-Chung Lin
- Department of Anesthetics, Chang Gung Memorial Hospital at Lin-Kou and College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Li-Der Hsiao
- Department of Anesthetics, Chang Gung Memorial Hospital at Lin-Kou and College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Graduate Institute of Biomedical Sciences, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan.
| |
Collapse
|
24
|
Xia LH, Chen T, Zhang B, Chen M. Mechanism of Profilin-1 in regulating eNOS/NO signaling pathway and its role in hypertensive myocardial hypertension. ASIAN PAC J TROP MED 2015; 8:399-404. [PMID: 26003601 DOI: 10.1016/s1995-7645(14)60351-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
OBJECTIVE To explore the mechanism of Profilin-1 in regulating eNOS/NO pathway and its role in the development of myocardial hypertrophy. METHODS Spontaneously hypertensive rats (SHR) aged 5 weeks were injected with different adenovirus vectors to induce Profilin-1 expression knockdown (SHR-I) or over express (SHR-H) or to use as control (SHR-C). All these treatment were compared with Wistar-Kyoto rats (SKY) treated with control adenovirus vectors (WKY-C). The same injection was executed at the sixth week during the experiment of 12 weeks. After experiment, the left ventricular weight-to-heart weight ratio (LVW/HW) and left ventricular long axis (LVLA) were measured. Meanwhile, NO contents in blood and myocardium, Profilin-1, eNOS and Caveolin-3 mRNA and protein levels and phosphorylated eNOS (P-eNOS) protein level in myocardium were determined. RESULTS Compared with WKY-C group, the SHR-C group was statistically higher in LVW/HW (0.79±0.03), LVLA (11.82±0.58 mm) and Profilin-1 mRNA and protein level (P<0.05), but lower in NO content [(18.63±6.23) μmol/L] in blood and [(2.71±0.17) μmol/L] in myocardium), eNOS activity and Caveolin-3 expression (P<0.05). The over expressing Profilin-1 led SHR-H group to a higher value of LVW/HW [(0.93±0.03) mm and LVLA (14.17±0.69) mm] in comparison with SHR-C group (P<0.05), and to a lower value of NO content (in myocardium), eNOS activity and Caveolin-3 expression (P<0.05); however, this phenomenon was reversed by the knockdown Profilin-1 expression (SHR-I group). CONCLUSIONS Profilin-1 expression, being negative in regulating Caveolin-3 expression and eNOS/NO pathway activity, promotes the development of myocardial hypertrophy which can be reversed by Profilin-1 silencing.
Collapse
Affiliation(s)
- Liang-Hua Xia
- Department of Ultrasound Medicine, Affiliated East Hospital of Tongji University, Shanghai, China
| | - Tian Chen
- Department of Ultrasound Medicine, Affiliated East Hospital of Tongji University, Shanghai, China
| | - Bo Zhang
- Department of Ultrasound Medicine, Affiliated East Hospital of Tongji University, Shanghai, China.
| | - Ming Chen
- Department of Ultrasound Medicine, Affiliated East Hospital of Tongji University, Shanghai, China
| |
Collapse
|
25
|
Yoshida T, Friehs I, Mummidi S, del Nido PJ, Addulnour-Nakhoul S, Delafontaine P, Valente AJ, Chandrasekar B. Pressure overload induces IL-18 and IL-18R expression, but markedly suppresses IL-18BP expression in a rabbit model. IL-18 potentiates TNF-α-induced cardiomyocyte death. J Mol Cell Cardiol 2014; 75:141-51. [PMID: 25108227 PMCID: PMC4157969 DOI: 10.1016/j.yjmcc.2014.07.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 07/15/2014] [Accepted: 07/16/2014] [Indexed: 10/24/2022]
Abstract
Recurrent or sustained inflammation plays a causal role in the development and progression of left ventricular hypertrophy (LVH) and its transition to failure. Interleukin (IL)-18 is a potent pro-hypertrophic inflammatory cytokine. We report that induction of pressure overload in the rabbit, by constriction of the descending thoracic aorta induces compensatory hypertrophy at 4weeks (mass/volume ratio: 1.7±0.11) and ventricular dilatation indicative of heart failure at 6weeks (mass/volume ratio: 0.7±0.04). In concordance with this, fractional shortening was preserved at 4weeks, but markedly attenuated at 6weeks. We cloned rabbit IL-18, IL-18Rα, IL-18Rβ, and IL-18 binding protein (IL-18BP) cDNA, and show that pressure overload, while enhancing IL-18 and IL-18R expression in hypertrophied and failing hearts, markedly attenuated the level of expression of the endogenous IL-18 antagonist IL-18BP. Cyclical mechanical stretch (10% cyclic equibiaxial stretch, 1Hz) induced hypertrophy of primary rabbit cardiomyocytes in vitro and enhanced ANP, IL-18, and IL-18Rα expression. Further, treatment with rhIL-18 induced its own expression and that of IL-18Rα via AP-1 activation, and induced cardiomyocyte hypertrophy in part via PI3K/Akt/GATA4 signaling. In contrast, IL-18 potentiated TNF-α-induced cardiomyocyte death, and by itself induced cardiac endothelial cell death. These results demonstrate that pressure overload is associated with enhanced IL-18 and its receptor expression in hypertrophied and failingrabbit hearts. Since IL-18BP expression is markedly inhibited, our results indicate a positive amplification in IL-18 proinflammatory signaling during pressure overload, and suggest IL-18 as a potential therapeutic target in pathological hypertrophy and cardiac failure.
Collapse
Affiliation(s)
- Tadashi Yoshida
- Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Ingeborg Friehs
- Department of Cardiac Surgery, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Srinivas Mummidi
- South Texas Veterans Health Care System and Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Pedro J del Nido
- Department of Cardiac Surgery, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Solange Addulnour-Nakhoul
- Department of Medicine-Gastroenterology, Tulane University School of Medicine, New Orleans, LA 70112, USA; Research Service, Southeast Louisiana Veterans Health Care System, New Orleans, LA 70161, USA
| | - Patrice Delafontaine
- Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Anthony J Valente
- Department of Cardiac Surgery, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Bysani Chandrasekar
- Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, LA 70112, USA; Research Service, Southeast Louisiana Veterans Health Care System, New Orleans, LA 70161, USA.
| |
Collapse
|
26
|
Li H, Lu ZZ, Chen C, Song Y, Xiao H, Zhang YY. Echocardiographic assessment of β-adrenoceptor stimulation-induced heart failure with reduced heart rate in mice. Clin Exp Pharmacol Physiol 2014; 41:58-66. [PMID: 24107096 DOI: 10.1111/1440-1681.12176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 09/05/2013] [Accepted: 09/11/2013] [Indexed: 12/16/2022]
Abstract
1. Chronic injection with the β-adrenoceptor (β-AR) agonist isoproterenol (ISO) has been commonly used as an animal model of β-AR-induced cardiac remodelling and heart failure. This ISO-treated model usually exhibits significantly decreased conscious heart rate (HR). However, the HR in treatment groups is usually adjusted to the same levels by anaesthesia to assess cardiac geometry and function. In the present study, we report a method of echocardiographic assessment that represents the true cardiac geometry and function under conditions of ISO withdrawal. 2. Briefly, C57BL/6 mice were treated with 5 mg/kg per day ISO for 12 weeks. Cardiac geometry and function were assessed by high-resolution echocardiography in vehicle (saline) - and ISO-treated mice that were either conscious or anaesthetized using different concentrations of isoflurane. 3. The cardiac β-AR response was decreased in ISO-treated mice, as evidenced by markedly decreased conscious HR. Vehicle- and ISO-treated mice did not differ in terms of cardiac geometry or function when HR was adjusted to the same level (400 b.p.m.) in both treatment groups, but cardiac geometry and function did differ when a low (1%) rather than high (1.5% or 2%) isoflurane concentration was used to adjust HR. Furthermore, 3 day ISO withdrawal eliminated the difference in conscious HR between the two groups. In addition, the groups differed in cardiac geometry and function regardless of the isoflurane concentration used. 4. In conclusion, using isoflurane to decrease the HR of treated groups to the same level may mask left ventricular dysfunction in ISO-treated mice. Withdrawal of ISO eliminated the difference in basal HR between the ISO-treated and control groups on echocardiography, allowing a more accurate assessment of cardiac pathological and functional changes.
Collapse
Affiliation(s)
- Hao Li
- Institute of Vascular Medicine, Peking University Third Hospital, Beijing, China; Key Laboratory of Cardiovascular Molecular Biologyand Regulatory Peptide, Ministry of Health, Beijing, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | | | | | | | | | | |
Collapse
|
27
|
Grisanti LA, Talarico JA, Carter RL, Yu JE, Repas AA, Radcliffe SW, Tang HA, Makarewich CA, Houser SR, Tilley DG. β-Adrenergic receptor-mediated transactivation of epidermal growth factor receptor decreases cardiomyocyte apoptosis through differential subcellular activation of ERK1/2 and Akt. J Mol Cell Cardiol 2014; 72:39-51. [PMID: 24566221 PMCID: PMC4037368 DOI: 10.1016/j.yjmcc.2014.02.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 01/15/2014] [Accepted: 02/12/2014] [Indexed: 02/03/2023]
Abstract
β-Adrenergic receptor (βAR)-mediated transactivation of epidermal growth factor receptor (EGFR) has been shown to relay pro-survival effects via unknown mechanisms. We hypothesized that acute βAR-mediated EGFR transactivation in the heart promotes differential subcellular activation of ERK1/2 and Akt, promoting cell survival through modulation of apoptosis. C57BL/6 mice underwent acute i.p. injection with isoproterenol (ISO)±AG 1478 (EGFR antagonist) to assess the impact of βAR-mediated EGFR transactivation on the phosphorylation of ERK1/2 (P-ERK1/2) and Akt (P-Akt) in distinct cardiac subcellular fractions. Increased P-ERK1/2 and P-Akt were observed in cytosolic, plasma membrane and nuclear fractions following ISO stimulation. Whereas the P-ERK1/2 response was EGFR-sensitive in all fractions, the P-Akt response was EGFR-sensitive only in the plasma membrane and nucleus, results confirmed in primary rat neonatal cardiomyocytes (RNCM). βAR-mediated EGFR-transactivation also decreased apoptosis in serum-depleted RNCM, as measured via TUNEL as well as caspase 3 activity/cleavage, which were sensitive to the inhibition of either ERK1/2 (PD184352) or Akt (LY-294002) signaling. Caspase 3 activity/cleavage was also sensitive to the inhibition of transcription, which, with an increase in nuclear P-ERK1/2 and P-Akt in response to ISO, suggested that βAR-mediated EGFR transactivation may regulate apoptotic gene transcription. An Apoptosis PCR Array identified tnfsf10 (TRAIL) to be altered by ISO in an EGFR-sensitive manner, results confirmed via RT-PCR and ELISA measurement of both membrane-bound and soluble cardiomyocyte TRAIL levels. βAR-mediated EGFR transactivation induces differential subcellular activation of ERK1/2 and Akt leading to increased cell survival through the modulation of caspase 3 activity and apoptotic gene expression in cardiomyocytes.
Collapse
MESH Headings
- Adrenergic beta-Agonists/pharmacology
- Animals
- Animals, Newborn
- Apoptosis/drug effects
- Apoptosis/genetics
- Caspase 3/genetics
- Caspase 3/metabolism
- Cats
- ErbB Receptors/antagonists & inhibitors
- ErbB Receptors/genetics
- ErbB Receptors/metabolism
- Gene Expression Regulation
- Isoproterenol/pharmacology
- Mice
- Mice, Inbred C57BL
- Mitogen-Activated Protein Kinase 1/genetics
- Mitogen-Activated Protein Kinase 1/metabolism
- Mitogen-Activated Protein Kinase 3/genetics
- Mitogen-Activated Protein Kinase 3/metabolism
- Myocytes, Cardiac/cytology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Phosphorylation
- Primary Cell Culture
- Proto-Oncogene Proteins c-akt/genetics
- Proto-Oncogene Proteins c-akt/metabolism
- Quinazolines/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptors, Adrenergic, beta/genetics
- Receptors, Adrenergic, beta/metabolism
- Signal Transduction
- Tyrphostins/pharmacology
Collapse
Affiliation(s)
- Laurel A Grisanti
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Jennifer A Talarico
- Department of Pharmaceutical Sciences, Jefferson School of Pharmacy, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Rhonda L Carter
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Justine E Yu
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Ashley A Repas
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Scott W Radcliffe
- Department of Pharmaceutical Sciences, Jefferson School of Pharmacy, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Hoang-Ai Tang
- Department of Pharmaceutical Sciences, Jefferson School of Pharmacy, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Catherine A Makarewich
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Steven R Houser
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Douglas G Tilley
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA; Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, USA.
| |
Collapse
|
28
|
O'Brien LC, Mezzaroma E, Van Tassell BW, Marchetti C, Carbone S, Abbate A, Toldo S. Interleukin-18 as a therapeutic target in acute myocardial infarction and heart failure. Mol Med 2014; 20:221-9. [PMID: 24804827 DOI: 10.2119/molmed.2014.00034] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 04/28/2014] [Indexed: 12/13/2022] Open
Abstract
Interleukin 18 (IL-18) is a proinflammatory cytokine in the IL-1 family that has been implicated in a number of disease states. In animal models of acute myocardial infarction (AMI), pressure overload, and LPS-induced dysfunction, IL-18 regulates cardiomyocyte hypertrophy and induces cardiac contractile dysfunction and extracellular matrix remodeling. In patients, high IL-18 levels correlate with increased risk of developing cardiovascular disease (CVD) and with a worse prognosis in patients with established CVD. Two strategies have been used to counter the effects of IL-18:IL-18 binding protein (IL-18BP), a naturally occurring protein, and a neutralizing IL-18 antibody. Recombinant human IL-18BP (r-hIL-18BP) has been investigated in animal studies and in phase I/II clinical trials for psoriasis and rheumatoid arthritis. A phase II clinical trial using a humanized monoclonal IL-18 antibody for type 2 diabetes is ongoing. Here we review the literature regarding the role of IL-18 in AMI and heart failure and the evidence and challenges of using IL-18BP and blocking IL-18 antibodies as a therapeutic strategy in patients with heart disease.
Collapse
Affiliation(s)
- Laura C O'Brien
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Eleonora Mezzaroma
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America Pharmacotherapy and Outcome Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Benjamin W Van Tassell
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America Pharmacotherapy and Outcome Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Carlo Marchetti
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Salvatore Carbone
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Antonio Abbate
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, Virginia, United States of America Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Stefano Toldo
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| |
Collapse
|
29
|
Grailer JJ, Haggadone MD, Sarma JV, Zetoune FS, Ward PA. Induction of M2 regulatory macrophages through the β2-adrenergic receptor with protection during endotoxemia and acute lung injury. J Innate Immun 2014; 6:607-18. [PMID: 24642449 DOI: 10.1159/000358524] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 01/11/2014] [Indexed: 01/10/2023] Open
Abstract
The main drivers of acute inflammation are macrophages, which are known to have receptors for catecholamines. Based on their function, macrophages are broadly categorized as having either M1 (proinflammatory) or M2 phenotypes (anti-inflammatory). In this study, we investigated catecholamine-induced alterations in the phenotype of activated macrophages. In the presence of lipopolysaccharide (LPS), mouse peritoneal macrophages acquired an M1 phenotype. However, the copresence of LPS and either epinephrine or norepinephrine resulted in a strong M2 phenotype including high levels of arginase-1 and interleukin-10, and a reduced expression of M1 markers. Furthermore, epinephrine enhanced macrophage phagocytosis and promoted type 2 T-cell responses in vitro, which are known features of M2 macrophages. Analysis of M2 subtype-specific markers indicated that LPS and catecholamine-cotreated macrophages were not alternatively activated but were rather of the regulatory macrophage subtype. Interestingly, catecholamines signaled through the β2-adrenergic receptor but not the canonical cAMP/protein kinase A signaling pathway. Instead, the M2 pathway required an intact phosphoinositol 3-kinase pathway. Blockade of the β2-adrenergic receptor reduced survival and enhanced injury in mouse models of endotoxemia and LPS-induced acute lung injury, respectively. These results demonstrate a role for the β2-adrenergic receptor in promoting the M2 macrophage phenotype.
Collapse
Affiliation(s)
- Jamison J Grailer
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich., USA
| | | | | | | | | |
Collapse
|
30
|
Davel AP, Brum PC, Rossoni LV. Isoproterenol induces vascular oxidative stress and endothelial dysfunction via a Giα-coupled β2-adrenoceptor signaling pathway. PLoS One 2014; 9:e91877. [PMID: 24622771 PMCID: PMC3951496 DOI: 10.1371/journal.pone.0091877] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 02/17/2014] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE Sustained β-adrenergic stimulation is a hallmark of sympathetic hyperactivity in cardiovascular diseases. It is associated with oxidative stress and altered vasoconstrictor tone. This study investigated the β-adrenoceptor subtype and the signaling pathways implicated in the vascular effects of β-adrenoceptor overactivation. METHODS AND RESULTS Mice lacking the β1- or β2-adrenoceptor subtype (β1KO, β2KO) and wild-type (WT) were treated with isoproterenol (ISO, 15 μg.g(-1) x day(-1), 7 days). ISO significantly enhanced the maximal vasoconstrictor response (Emax) of the aorta to phenylephrine in WT (+34%) and β1KO mice (+35%) but not in β2KO mice. The nitric oxide synthase (NOS) inhibitor L-NAME abolished the differences in phenylephrine response between the groups, suggesting that ISO impaired basal NO availability in the aorta of WT and β1KO mice. Superoxide dismutase (SOD), pertussis toxin (PTx) or PD 98,059 (p-ERK 1/2 inhibitor) incubation reversed the hypercontractility of aortic rings from ISO-treated WT mice; aortic contraction of ISO-treated β2KO mice was not altered. Immunoblotting revealed increased aortic expression of Giα-3 protein (+50%) and phosphorylated ERK1/2 (+90%) and decreased eNOS dimer/monomer ratio in ISO-treated WT mice. ISO enhanced the fluorescence response to dihydroethidium (+100%) in aortas from WT mice, indicating oxidative stress that was normalized by SOD, PTx and L-NAME. The ISO effects were abolished in β2KO mice. CONCLUSIONS The β2-adrenoceptor/Giα signaling pathway is implicated in the enhanced vasoconstrictor response and eNOS uncoupling-mediated oxidative stress due to ISO treatment. Thus, long-term β2-AR activation might results in endothelial dysfunction.
Collapse
MESH Headings
- Animals
- Aorta/drug effects
- Aorta/metabolism
- Aorta/physiology
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/metabolism
- GTP-Binding Protein alpha Subunits, Gi-Go/metabolism
- Gene Expression Regulation/drug effects
- Gene Knockout Techniques
- Isoproterenol/pharmacology
- Male
- Mice
- Mitogen-Activated Protein Kinase 1/metabolism
- Mitogen-Activated Protein Kinase 3/metabolism
- Nitric Oxide/metabolism
- Nitric Oxide Synthase Type III/chemistry
- Oxidative Stress/drug effects
- Phenylephrine/pharmacology
- Phosphorylation/drug effects
- Protein Multimerization/drug effects
- Protein Structure, Quaternary
- Receptors, Adrenergic, beta-2/deficiency
- Receptors, Adrenergic, beta-2/genetics
- Receptors, Adrenergic, beta-2/metabolism
- Signal Transduction/drug effects
- Vasoconstriction/drug effects
Collapse
Affiliation(s)
- Ana P. Davel
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas-UNICAMP, Campinas, SP, Brazil
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Patricia C. Brum
- School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil
| | - Luciana V. Rossoni
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
- * E-mail:
| |
Collapse
|
31
|
Abstract
Together with IL-12 or IL-15, interleukin-18 (IL-18) plays a major role in the production of interferon-γ from T-cells and natural killer cells; thus, IL-18 is considered to have a major role in the Th1 response. However, without IL-12, IL-18 is proinflammatory in an IFNγ independent manner. IL-18 is a member of the IL-1 family of cytokines and similar to IL-1β, the cytokine is synthesized as an inactive precursor requiring processing by caspase-1 into an active cytokine. IL-18 is also present as an integral membrane protein but requires caspase-1 for full activity in order to induce IFNγ. Uniquely, unlike IL-1β, the IL-18 precursor is constitutively present in nearly all cells in healthy humans and animals. The activity of IL-18 is balanced by the presence of a high-affinity, naturally occurring IL-18 binding protein (IL-18BP). In humans, increased disease severity can be associated with an imbalance of IL-18 to IL-18BP such that the levels of free IL-18 are elevated in the circulation. Increasing number of studies have expanded the role of IL-18 in mediating inflammation in animal models of disease using the IL-18BP, IL-18 deficient mice, neutralization of IL-18 or deficiency in the IL-18 receptor alpha chain. A role for IL-18 has been implicated in several autoimmune diseases, myocardial function, emphysema, metabolic syndromes, psoriasis, inflammatory bowel disease, macrophage activation syndrome, sepsis and acute kidney injury, although paradoxically, in some models of disease, IL-18 is protective. The IL-18BP has been used safely in humans and clinical trials of IL-18BP as well as neutralizing anti-IL-18 antibodies are being tested in various diseases.
Collapse
Affiliation(s)
- Daniela Novick
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Soohyun Kim
- Department of Biomedical Science and Technology, Konkuk University, Seoul, Republic of Korea
| | - Gilles Kaplanski
- UMR-S1076, Aix Marseille Université, Campus Timone, Marseille, France; Service de Médecine Interne, Hôpital de la Conception, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - Charles A Dinarello
- Department of Medicine, University of Colorado Denver, Aurora, CO, United States; Department of Medicine, University Medical Center Nijmegen, Nijmegen, The Netherlands.
| |
Collapse
|
32
|
Wittmann M, Doble R, Bachmann M, Pfeilschifter J, Werfel T, Mühl H. IL-27 Regulates IL-18 binding protein in skin resident cells. PLoS One 2012; 7:e38751. [PMID: 22761702 PMCID: PMC3384590 DOI: 10.1371/journal.pone.0038751] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 05/10/2012] [Indexed: 01/27/2023] Open
Abstract
IL-18 is an important mediator involved in chronic inflammatory conditions such as cutaneous lupus erythematosus, psoriasis and chronic eczema. An imbalance between IL-18 and its endogenous antagonist IL-18 binding protein (BP) may account for increased IL-18 activity. IL-27 is a cytokine with dual function displaying pro- and anti-inflammatory properties. Here we provide evidence for a yet not described anti-inflammatory mode of action on skin resident cells. Human keratinocytes and surprisingly also fibroblasts (which do not produce any IL-18) show a robust, dose-dependent and highly inducible mRNA expression and secretion of IL-18BP upon IL-27 stimulation. Other IL-12 family members failed to induce IL-18BP. The production of IL-18BP peaked between 48-72 h after stimulation and was sustained for up to 96 h. Investigation of the signalling pathway showed that IL-27 activates STAT1 in human keratinocytes and that a proximal GAS site at the IL-18BP promoter is of importance for the functional activity of IL-27. The data are in support of a significant anti-inflammatory effect of IL-27 on skin resident cells. An important novel property of IL-27 in skin pathobiology may be to counter-regulate IL-18 activities by acting on keratinocytes and importantly also on dermal fibroblasts.
Collapse
Affiliation(s)
- Miriam Wittmann
- Division of Rheumatic and Musculoskeletal Disease, Leeds Institute of Molecular Medicine, LMBRU LTHT, University of Leeds, Leeds, United Kingdom.
| | | | | | | | | | | |
Collapse
|
33
|
Valente AJ, Clark RA, Siddesha JM, Siebenlist U, Chandrasekar B. CIKS (Act1 or TRAF3IP2) mediates Angiotensin-II-induced Interleukin-18 expression, and Nox2-dependent cardiomyocyte hypertrophy. J Mol Cell Cardiol 2012; 53:113-24. [PMID: 22575763 DOI: 10.1016/j.yjmcc.2012.04.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 04/10/2012] [Accepted: 04/18/2012] [Indexed: 12/15/2022]
Abstract
Chronic elevation of angiotensin (Ang)-II can lead to myocardial inflammation, hypertrophy and cardiac failure. The adaptor molecule CIKS (connection to IKK and SAPK/JNK) activates the IκB kinase/nuclear factor (NF)-κB and JNK/activator protein (AP)-1 pathways in autoimmune and inflammatory diseases. Since Ang-II is a potent activator of NF-κB and AP-1, we investigated whether CIKS is critical in Ang-II-mediated cardiac hypertrophy. Here we report that Ang-II induced CIKS mRNA and protein expression, CIKS binding to IKK and JNK perhaps functioning as a scaffold protein, CIKS-dependent IKK/NF-κB and JNK/AP-1 activation, p65 and c-Jun phosphorylation and nuclear translocation, NF-κB- and AP-1-dependent IL-18 and MMP-9 induction, and hypertrophy of adult cardiomyocytes isolated from WT, but not CIKS-null mice. These results were recapitulated in WT-cardiomyocytes following CIKS knockdown. Infusion of Ang-II for 7days induced cardiac hypertrophy, increased collagen content, and upregulated CIKS mRNA and protein expression in WT mice, whereas cardiac hypertrophy and collagen deposition were markedly attenuated in the CIKS-null mice, despite a similar increase in systolic blood pressure and DPI-inhibitable superoxide generation in both types of animals. Further, Ang-II-induced IKK/p65 and JNK/c-Jun phosphorylation, NF-κB and AP-1 activation, and IL-18 and MMP-9 expression were also markedly attenuated in CIKS-null mice. These results demonstrate that CIKS is critical in Ang-II-induced cardiomyocyte hypertrophy and fibrosis, and that CIKS is an important intermediate in Ang-II-induced redox signaling. CIKS is a potential therapeutic target in cardiac hypertrophy, fibrosis, and congestive heart failure.
Collapse
Affiliation(s)
- Anthony J Valente
- Medicine, University of Texas Health Science Center and South Texas Veterans Health Care System, San Antonio, TX 78229, USA
| | | | | | | | | |
Collapse
|