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Zhang T, Ma R, Li Z, Liu T, Yang S, Li N, Wang D. Nur77 alleviates cardiac fibrosis by upregulating GSK-3β transcription during aging. Eur J Pharmacol 2024; 965:176290. [PMID: 38158109 DOI: 10.1016/j.ejphar.2023.176290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 11/23/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Cardiac fibrosis is associated with aging, for which no targeted therapies are available. With aging, the levels of nerve growth factor-induced gene B (Nur77) are reduced during cardiac remodelling; however, its role in cardiac fibrosis in aging remains unclear. Here, we found that Nur77 knockout increased cardiac structure abnormalities, systolic and diastolic dysfunction, cardiac hypertrophy, and fibrotic marker expression in 15-month-old mice. Furthermore, Nur77 deficiency induced collagen type I (Col-1) and α-smooth muscle actin overproduction in transforming growth factor beta (TGF-β) treated H9c2 cells, whereas Nur77 overexpression attenuated this effect. Nur77 deficiency in vivo and in vitro downregulated glycogen synthase kinase (GSK)-3β expression and increased β-catenin activity, while its overexpression increased GSK-3β expression. GSK-3β knockdown counteracted the anti-fibrotic effect of Nur77 on TGF-β-treated H9c2 cells. Chromatin immunoprecipitation and luciferase reporter assay results suggested GSK-3β as the direct target of Nur77. Our findings suggest that Nur77 directly initiates GSK-3β transcription and age-related cardiac fibrosis partly through the GSK-3β/β-catenin pathway. This study proposes a novel mechanism for Nur77 regulating cardiac fibrosis and suggests Nur77 as a target for the prevention and treatment of aging-associated cardiac fibrosis and heart failure.
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Affiliation(s)
- Tiantian Zhang
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Ruzhe Ma
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Zhichi Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Tingting Liu
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Sijia Yang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Na Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Difei Wang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.
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Lin X, Zhang H, Chu Y, Zhang Y, Xu C, Xie H, Ruan Q, Lin J, Huang C, Chai D. Honokiol ameliorates angiotensin II-induced cardiac hypertrophy by promoting dissociation of the Nur77-LKB1 complex and activating the AMPK pathway. J Cell Mol Med 2024; 28:e18028. [PMID: 37985436 PMCID: PMC10805491 DOI: 10.1111/jcmm.18028] [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: 05/02/2023] [Revised: 10/15/2023] [Accepted: 10/24/2023] [Indexed: 11/22/2023] Open
Abstract
Pathological cardiac hypertrophy is a key contributor to heart failure, and the molecular mechanisms underlying honokiol (HNK)-mediated cardioprotection against this condition remain worth further exploring. This study aims to investigate the effect of HNK on angiotensin II (Ang II)-induced myocardial hypertrophy and elucidate the underlying mechanisms. Sprague-Dawley rats were exposed to Ang II infusion, followed by HNK or vehicle treatment for 4 weeks. Our results showed that HNK treatment protected against Ang II-induced myocardial hypertrophy, fibrosis and dysfunction in vivo and inhibited Ang II-induced hypertrophy in neonatal rat ventricular myocytes in vitro. Mechanistically, HNK suppressed the Ang II-induced Nur77 expression at the transcriptional level and promoted ubiquitination-mediated degradation of Nur77, leading to dissociation of the Nur77-LKB1 complex. This facilitated the translocation of LKB1 into the cytoplasm and activated the LKB1-AMPK pathway. Our findings suggest that HNK attenuates pathological remodelling and cardiac dysfunction induced by Ang II by promoting dissociation of the Nur77-LKB1 complex and subsequent activation of AMPK signalling. This study uncovers a novel role of HNK on the LKB1-AMPK pathway to protect against cardiac hypertrophy.
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Affiliation(s)
- Xiaoyan Lin
- Echocardiological Department, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Hailin Zhang
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Yong Chu
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Yuze Zhang
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Changsheng Xu
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Hong Xie
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Qinyun Ruan
- Echocardiological Department, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Jinxiu Lin
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Chun‐Kai Huang
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Dajun Chai
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
- Cardiovascular Department, National Regional Medical Center, Binhai Branch of the First Affiliated HospitalFujian Medical UniversityFuzhouChina
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Zhu N, Guo ZF, Kazama K, Yi B, Tongmuang N, Yao H, Yang R, Zhang C, Qin Y, Han L, Sun J. Epigenetic regulation of vascular smooth muscle cell phenotypic switch and neointimal formation by PRMT5. Cardiovasc Res 2023; 119:2244-2255. [PMID: 37486354 PMCID: PMC10578915 DOI: 10.1093/cvr/cvad110] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 03/20/2023] [Accepted: 04/08/2023] [Indexed: 07/25/2023] Open
Abstract
AIMS Phenotypic transition of vascular smooth muscle cells (VSMCs) from a contractile to a synthetic state is involved in the development of cardiovascular diseases, including atherosclerosis, hypertension, and post-angioplasty restenosis. Arginine methylation catalyzed by protein arginine methyltransferases (PRMTs) has been implicated in multiple cellular processes, however, its role in VSMC biology remains undetermined. The objective of this study was to determine the role of PRMTs in VSMC phenotypic switch and vascular remodelling after injury. METHODS AND RESULTS Our results show that PRMT5 is the most abundantly expressed PRMT in human aortic SMCs, and its expression is up-regulated in platelet-derived growth factor (PDGF)-stimulated VSMCs, human atherosclerotic lesions, and rat carotid arteries after injury, as determined by western blot and immunohistochemical staining. PRMT5 overexpression inhibits the expression of SMC marker genes and promotes VSMC proliferation and migration, while silencing PRMT5 exerts the opposite effects. Mechanistically, we found that PRMT5 overexpression led to histone di-methylation of H3R8 and H4R3, which in turn attenuates acetylation of H3K9 and H4, thus limiting recruitment of the SRF/myocardin complexes to the CArG boxes of SMC marker genes. Furthermore, both SMC-specific deletion of PRMT5 in mice and local delivery of lentivirus expressing shPRMT5 to rat carotid arteries significantly attenuated neointimal formation after injury. Likewise, pharmacological inhibition of PRMT5 by EPZ015666 markedly inhibited carotid artery ligation-induced neointimal formation in mice. CONCLUSIONS Our results identify PRMT5 as a novel regulator in VSMC phenotypic switch and suggest that inhibition of PRMT5 may represent an effective therapeutic strategy for proliferative vascular diseases.
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Affiliation(s)
- Ni Zhu
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Zhi-Fu Guo
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Kyosuke Kazama
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Bing Yi
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Nopprarat Tongmuang
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Huijuan Yao
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Ruifeng Yang
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Chen Zhang
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
| | - Yongwen Qin
- Department of Cardiovascular Medicine, Changhai Hospital, Naval Medical University, 168 Changhai Rd, Shanghai 200433, China
| | - Lin Han
- Department of Cardiovascular Medicine, Changhai Hospital, Naval Medical University, 168 Changhai Rd, Shanghai 200433, China
| | - Jianxin Sun
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, 1020 Locust St, Philadelphia, PA 19107, USA
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Guo ZF, Tongmuang N, Li C, Zhang C, Hu L, Capreri D, Zuo MX, Summer R, Sun J. Inhibiting endothelial cell Mst1 attenuates acute lung injury in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.27.559864. [PMID: 37808846 PMCID: PMC10557750 DOI: 10.1101/2023.09.27.559864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Background Lung endothelium plays a pivotal role in the orchestration of inflammatory and injury responses to acute pulmonary insults. Mammalian sterile 20-like kinase 1 (Mst1), a mammalian homolog of Hippo, is a serine/threonine kinase that is ubiquitously expressed in many tissues and has been shown to play an important role in the regulation of apoptosis, inflammation, stress responses, and organ growth. While Mst1 exhibits high expression in the lung, its involvement in the endothelial response to pulmonary insults remains largely unexplored. Methods Mst1 activity was assessed in lung endothelium by western blot. Mst1 endothelial specific knockout mice and a pharmacological inhibitor were employed to assess the effects of Mst1 on homeostatic and lipopolysaccharide (LPS)-induced endothelial responses. Readouts for these studies included various assays, including NF-κB activation and levels of various inflammatory cytokines and adhesion molecules. The role of Mst1 in lung injury was evaluated in a LPS-induced murine model of acute lung injury (ALI). Results Mst1 phosphorylation was significantly increased in lung endothelial cells after exposure to tumor necrosis factor (TNF)-alpha (TNF-α) and mouse lung tissues after LPS exposure. Overexpression of full length Mst1 or its kinase domain promoted nuclear factor kappaB (NF-κB) activation through promoting JNK and p38 activation, whereas dominant negative forms of Mst1 (DN-Mst1) attenuated endothelial responses to TNF-α and interleukin-1β. Consistent with this, targeted deletion of Mst1 in lung endothelium reduced lung injury to LPS in mice. Similarly, wild-type mice were protected from LPS-induced lung injury following treatment with a pharmacological inhibitor of Mst1/2. Conclusions Our findings identified Mst1 kinase as a key regulator in the control of lung EC activation and suggest that therapeutic strategies aimed at inhibiting Mst1 activation might be effective in the prevention and treatment of lung injury to inflammatory insults.
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Liu T, Klussmann E. Targeting cAMP signaling compartments in iPSC-derived models of cardiovascular disease. Curr Opin Pharmacol 2023; 71:102392. [PMID: 37453312 DOI: 10.1016/j.coph.2023.102392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 06/14/2023] [Indexed: 07/18/2023]
Abstract
Adenosine 3',5'-cyclic monophosphate (cAMP) acts as a second messenger that is involved in the regulation of a plethora of processes. The activation of cAMP signaling in defined compartments is critical for cells to respond to an extracellular stimulus in a specific manner. Rapid advances in the field of human induced pluripotent stem cells (iPSCs) reflect their great potential for cardiovascular disease modeling, drug screening, regenerative and precision medicine. This review discusses cAMP signaling in iPSC-derived cardiovascular disease models, and the prospects of using such systems to elucidate disease mechanisms, drug actions and to identify novel drug targets for the treatment of cardiovascular diseases with unmet medical need, such as hypertension and heart failure.
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Affiliation(s)
- Tiannan Liu
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Germany; Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany
| | - Enno Klussmann
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Germany.
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Ashraf S, Taegtmeyer H, Harmancey R. Prolonged cardiac NR4A2 activation causes dilated cardiomyopathy in mice. Basic Res Cardiol 2022; 117:33. [PMID: 35776225 PMCID: PMC9249728 DOI: 10.1007/s00395-022-00942-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 06/14/2022] [Accepted: 06/23/2022] [Indexed: 02/03/2023]
Abstract
Transcription factors play a fundamental role in cardiovascular adaptation to stress. Nuclear receptor subfamily 4 group A member 2 (NR4A2; NURR1) is an immediate-early gene and transcription factor with a versatile role throughout many organs. In the adult mammalian heart, and particularly in cardiac myocytes, NR4A2 is strongly up-regulated in response to beta-adrenergic stimulation. The physiologic implications of this increase remain unknown. In this study, we aimed to interrogate the consequences of cardiac NR4A2 up-regulation under normal conditions and in response to pressure overload. In mice, tamoxifen-dependent, cardiomyocyte-restricted overexpression of NR4A2 led to cardiomyocyte hypertrophy, left ventricular dilation, heart failure, and death within 40 days. Chronic NR4A2 induction also precipitated cardiac decompensation during transverse aortic constriction (TAC)-induced pressure overload. Mechanistically, NR4A2 caused adult cardiac myocytes to return to a fetal-like phenotype, with a switch to glycolytic metabolism and disassembly of sarcomeric structures. NR4A2 also re-activated cell cycle progression and stimulated DNA replication and karyokinesis but failed to induce cytokinesis, thereby promoting multinucleation of cardiac myocytes. Activation of cell cycle checkpoints led to induction of an apoptotic response which ultimately resulted in excessive loss of cardiac myocytes and impaired left ventricular contractile function. In summary, myocyte-specific overexpression of NR4A2 in the postnatal mammalian heart results in increased cell cycle re-entry and DNA replication but does not result in cardiac myocyte division. Our findings expose a novel function for the nuclear receptor as a critical regulator in the self-renewal of the cardiac myocyte and heart regeneration.
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Affiliation(s)
- Sadia Ashraf
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, 6431 Fannin St., Houston, TX, 77030, USA
| | - Heinrich Taegtmeyer
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, 6431 Fannin St., Houston, TX, 77030, USA
| | - Romain Harmancey
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, 6431 Fannin St., Houston, TX, 77030, USA.
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Quttainah M, Raveendran VV, Saleh S, Parhar R, Aljoufan M, Moorjani N, Al-Halees ZY, AlShahid M, Collison KS, Westaby S, Al-Mohanna F. Transcriptomal Insights of Heart Failure from Normality to Recovery. Biomolecules 2022; 12:biom12050731. [PMID: 35625658 PMCID: PMC9138767 DOI: 10.3390/biom12050731] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 02/04/2023] Open
Abstract
Current management of heart failure (HF) is centred on modulating the progression of symptoms and severity of left ventricular dysfunction. However, specific understandings of genetic and molecular targets are needed for more precise treatments. To attain a clearer picture of this, we studied transcriptome changes in a chronic progressive HF model. Fifteen sheep (Ovis aries) underwent supracoronary aortic banding using an inflatable cuff. Controlled and progressive induction of pressure overload in the LV was monitored by echocardiography. Endomyocardial biopsies were collected throughout the development of LV failure (LVF) and during the stage of recovery. RNA-seq data were analysed using the PANTHER database, Metascape, and DisGeNET to annotate the gene expression for functional ontologies. Echocardiography revealed distinct clinical differences between the progressive stages of hypertrophy, dilatation, and failure. A unique set of transcript expressions in each stage was identified, despite an overlap of gene expression. The removal of pressure overload allowed the LV to recover functionally. Compared to the control stage, there were a total of 256 genes significantly changed in their expression in failure, 210 genes in hypertrophy, and 73 genes in dilatation. Gene expression in the recovery stage was comparable with the control stage with a well-noted improvement in LV function. RNA-seq revealed the expression of genes in each stage that are not reported in cardiovascular pathology. We identified genes that may be potentially involved in the aetiology of progressive stages of HF, and that may provide future targets for its management.
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Affiliation(s)
- Mohammed Quttainah
- Department of Cell Biology, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.Q.); (V.V.R.); (S.S.); (R.P.); (K.S.C.)
| | - Vineesh Vimala Raveendran
- Department of Cell Biology, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.Q.); (V.V.R.); (S.S.); (R.P.); (K.S.C.)
| | - Soad Saleh
- Department of Cell Biology, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.Q.); (V.V.R.); (S.S.); (R.P.); (K.S.C.)
| | - Ranjit Parhar
- Department of Cell Biology, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.Q.); (V.V.R.); (S.S.); (R.P.); (K.S.C.)
| | - Mansour Aljoufan
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.A.); (Z.Y.A.-H.); (M.A.)
| | - Narain Moorjani
- Department of Cardiothoracic Surgery, Papworth Hospital, University of Cambridge, Cambridge CB23 3RE, UK;
| | - Zohair Y. Al-Halees
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.A.); (Z.Y.A.-H.); (M.A.)
| | - Maie AlShahid
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.A.); (Z.Y.A.-H.); (M.A.)
| | - Kate S. Collison
- Department of Cell Biology, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.Q.); (V.V.R.); (S.S.); (R.P.); (K.S.C.)
| | - Stephen Westaby
- Oxford Heart Centre, John Radcliffe Hospital, Oxford OX9 3DU, UK;
| | - Futwan Al-Mohanna
- Department of Cell Biology, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia; (M.Q.); (V.V.R.); (S.S.); (R.P.); (K.S.C.)
- Correspondence:
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Nur77 Deficiency Exacerbates Macrophage NLRP3 Inflammasome-Mediated Inflammation and Accelerates Atherosclerosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2017815. [PMID: 35464766 PMCID: PMC9020982 DOI: 10.1155/2022/2017815] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 12/31/2022]
Abstract
Purpose Activation of NLR (nucleotide-binding and leucine-rich repeat immune receptor) family pyrin domain containing 3 (NLRP3) inflammasome mediating interleukin- (IL-) 1β secretion has emerged as an important component of inflammatory processes in atherogenesis. The nuclear receptor Nur77 is highly expressed in human atherosclerotic lesions; however, its functional role in macrophage NLRP3 inflammasome activation has not yet been clarified. Methods, Materials, and Results. Eight-week-old apolipoprotein E (ApoE)−/− and ApoE−/− Nur77−/− mice that were fed a Western diet underwent partial ligation of the left common carotid artery (LCCA) and left renal artery (LRA) to induce atherogenesis. Four weeks later, severe plaque burden associated with increased lipid deposition, reduced smooth muscle cells, macrophage infiltration, and decreased collagen expression was identified in ApoE−/− Nur77−/− mice compared with those in ApoE−/− mice. ApoE−/− Nur77−/− mice showed increased macrophage inflammatory responses in carotid atherosclerotic lesions. In vitro studies demonstrated that oxidized low-density lipoprotein cholesterol (ox-LDL) increased the release of lactate dehydrogenase (LDH) and upregulated the expressions of cleaved caspase-1, cleaved IL-1β and gasdermin D (GSMD) in WT peritoneal macrophages (PMs) in a NLRP3-dependent manner. Nur77−/− PMs exhibited a further increased level of NLRP3 inflammasome-mediated inflammation under ox-LDL treatment compared with WT PMs. Mechanistically, Nur77 could bind to the promoter of NLRP3 and inhibit its transcriptional activity. Conclusions This study demonstrated that Nur77 deletion promotes atherogenesis by exacerbating NLRP3 inflammasome-mediated inflammation.
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Paredes A, Santos-Clemente R, Ricote M. Untangling the Cooperative Role of Nuclear Receptors in Cardiovascular Physiology and Disease. Int J Mol Sci 2021; 22:ijms22157775. [PMID: 34360540 PMCID: PMC8346021 DOI: 10.3390/ijms22157775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 12/12/2022] Open
Abstract
The heart is the first organ to acquire its physiological function during development, enabling it to supply the organism with oxygen and nutrients. Given this early commitment, cardiomyocytes were traditionally considered transcriptionally stable cells fully committed to contractile function. However, growing evidence suggests that the maintenance of cardiac function in health and disease depends on transcriptional and epigenetic regulation. Several studies have revealed that the complex transcriptional alterations underlying cardiovascular disease (CVD) manifestations such as myocardial infarction and hypertrophy is mediated by cardiac retinoid X receptors (RXR) and their partners. RXRs are members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors and drive essential biological processes such as ion handling, mitochondrial biogenesis, and glucose and lipid metabolism. RXRs are thus attractive molecular targets for the development of effective pharmacological strategies for CVD treatment and prevention. In this review, we summarize current knowledge of RXR partnership biology in cardiac homeostasis and disease, providing an up-to-date view of the molecular mechanisms and cellular pathways that sustain cardiomyocyte physiology.
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Hatano S, Matsuda S, Okanobu A, Furutama D, Memida T, Kajiya M, Ouhara K, Fujita T, Mizuno N, Kurihara H. The role of nuclear receptor 4A1 (NR4A1) in drug-induced gingival overgrowth. FASEB J 2021; 35:e21693. [PMID: 34109683 DOI: 10.1096/fj.202100032r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/23/2021] [Accepted: 05/11/2021] [Indexed: 11/11/2022]
Abstract
Drug-induced gingival overgrowth (DIGO) is a side effect of cyclosporine A (CsA), nifedipine (NIF), and phenytoin (PHT). Nuclear receptor 4A1 (NR4A1) plays a role in fibrosis in multiple organs. However, the relationship between NR4A1 and DIGO remains unclear. We herein investigated the involvement of NR4A1 in DIGO. In the DIGO mouse model, CsA inhibited the up-regulation of Nr4a1 expression induced by periodontal disease (PD) in gingival tissue, but not that of Col1a1 and Pai1. We detected gingival overgrowth (GO) in Nr4a1 knock out (KO) mice with PD. A NR4A1 agonist inhibited the development of GO in DIGO model mice. TGF-β increased Col1a1 and Pai1 expression levels in KO mouse gingival fibroblasts (mGF) than in wild-type mice, while the overexpression of NR4A1 in KO mGF suppressed the levels. NR4A1 expression levels in gingival tissue were significantly lower in DIGO patients than in PD patients. We also investigated the relationship between nuclear factor of activated T cells (NFAT) and NR4A1. NFATc3 siRNA suppressed the TGF-β-induced up-regulation of NR4A1 mRNA expression in human gingival fibroblasts (hGF). CsA suppressed the TGF-β-induced translocation of NFATc3 into the nuclei of hGF. Furthermore, NIF and PHT also decreased NR4A1 mRNA expression levels and suppressed the translocation of NFATc3 in hGF. We confirmed that CsA, NIF, and PHT reduced cytosolic calcium levels increased by TGF-β, while CaCl2 enhanced the TGF-β-up-regulated NR4A1 expression. We propose that the suppression of the calcium-NFATc3-NR4A1 cascade by these three drugs plays a role in the development of DIGO.
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Affiliation(s)
- Saki Hatano
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shinji Matsuda
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ai Okanobu
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Daisuke Furutama
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takumi Memida
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Mikihito Kajiya
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhisa Ouhara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tsuyoshi Fujita
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noriyoshi Mizuno
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hidemi Kurihara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Ding R, Sun X, Yi B, Liu W, Kazama K, Xu X, Deshpande D, Liang C, Sun J. Nur77 Attenuates Inflammasome Activation by Inhibiting Caspase-1 Expression in Pulmonary Vascular Endothelial Cells. Am J Respir Cell Mol Biol 2021; 65:288-299. [PMID: 33971110 DOI: 10.1165/rcmb.2020-0524oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Inflammasomes are intracellular multiprotein complexes that help trigger and maintain the inflammatory response as part of the innate immune system. Recently, it has been increasingly recognized that aberrant inflammasome activation is critically involved endothelial dysfunction in a variety of human diseases, such as atherosclerosis, acute lung injury (ALI), and type 2 diabetes. The molecular mechanisms underlying endothelial inflammasome activation, however, are not completely elucidated. In the present study, we identified orphan nuclear receptor Nur77 as a novel regulator in controlling inflammasome activation in vascular endothelial cells (ECs). We demonstrated that LPS-induced inflammasome activation was significantly inhibited by ectopic overexpression of Nur77, predominantly through transcriptionally suppression of caspase-1 expression in vascular ECs. Consistent with this observation, we found that LPS-induced inflammasome activation was significantly augmented in lung ECs isolated from Nur77 knockout (KO) mice. Mechanistically, we showed that Nur77-induced inhibition of caspase-1 expression was due to an inhibition of Interferon Regulatory Factor 1 (IRF1) expression and its subsequent binding to the caspase-1 promoter. Importantly, in a mouse model of LPS-induced acute lung injury (ALI), Nur77 KO led to a marked activation of caspase-1 in the lung, increased alveolar and circulating IL-1β levels, and exacerbated ALI, all of which were substantially inhibited by administration of caspase-1 inhibitor. Together, our results support an important role for Nur77 in controlling inflammasome activation in vascular ECs and suggest that Nur77 could be a novel therapeutic target for the treatment of human diseases associated with aberrant inflammasome activation, such as ALI and atherosclerosis.
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Affiliation(s)
- Ru Ding
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States
| | - Xiaobo Sun
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States
| | - Bing Yi
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States
| | - Wennan Liu
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States
| | - Kyosuke Kazama
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States
| | - Xinyun Xu
- Changzheng Hospital, 56652, Shanghai, China
| | - Deepak Deshpande
- Thomas Jefferson University, 6559, Center for Translational Medicine, Philadelphia, Pennsylvania, United States
| | - Chun Liang
- Changzheng Hospital, 56652, Shanghai, China
| | - Jianxin Sun
- Thomas Jefferson University, 6559, Philadelphia, Pennsylvania, United States;
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12
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Medzikovic L, van Roomen C, Baartscheer A, van Loenen PB, de Vos J, Bakker ENTP, Koenis DS, Damanafshan A, Creemers EE, Arkenbout EK, de Vries CJM, de Waard V. Nur77 protects against adverse cardiac remodelling by limiting neuropeptide Y signalling in the sympathoadrenal-cardiac axis. Cardiovasc Res 2019; 114:1617-1628. [PMID: 29850786 DOI: 10.1093/cvr/cvy125] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 05/23/2018] [Indexed: 12/16/2022] Open
Abstract
Aims Cardiac remodelling and heart failure are promoted by persistent sympathetic activity. We recently reported that nuclear receptor Nur77 may protect against sympathetic agonist-induced cardiac remodelling in mice. The sympathetic co-transmitter neuropeptide Y (NPY) is co-released with catecholamines and is a known cardiac modulator and predictor of heart failure mortality. Recently, transcriptome analyses revealed NPY as a putative target of Nur77. In this study, we assess whether Nur77 modulates adverse cardiac remodelling via NPY signalling. Methods and results Nur77 represses NPY expression in the PC12 adrenal chromaffin cell line. Accordingly, NPY levels are higher in adrenal gland, plasma, and heart from Nur77-KO compared to wild-type mice. Conditioned medium from Nur77-silenced chromaffin cells and serum from Nur77-KO mice induce marked hypertrophy in cultured neonatal rat cardiomyocytes, which is inhibited by the NPY type 1 receptor (NPY1R) antagonist BIBO3304. In cardiomyocytes from Nur77-KO mice, intracellular Ca2+ is increased partially via the NPY1R. This is independent from elevated circulating NPY since cardiomyocyte-specific Nur77-deficient mice (CM-KO) do not have elevated circulating NPY, but do exhibit BIBO3304-sensitive, increased cardiomyocyte intracellular Ca2+. In vivo, this translates to NPY1R antagonism attenuating cardiac calcineurin activity and isoproterenol-induced cardiomyocyte hypertrophy and fibrosis in full-body Nur77-KO mice, but not in CM-KO mice. Conclusions The cardioprotective action of Nur77 can be ascribed to both inhibition of circulating NPY levels and to cardiomyocyte-specific modulation of NPY-NPY1R signalling. These results reveal the underlying mechanism of Nur77 as a promising modifier gene in heart failure.
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Affiliation(s)
- Lejla Medzikovic
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Cindy van Roomen
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Antonius Baartscheer
- Department of Experimental Cardiology, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Pieter B van Loenen
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Judith de Vos
- Department of Biomedical Engineering & Physics, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Erik N T P Bakker
- Department of Biomedical Engineering & Physics, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Duco S Koenis
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Amin Damanafshan
- Department of Experimental Cardiology, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Esther E Creemers
- Department of Experimental Cardiology, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - E Karin Arkenbout
- Department of Cardiology, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam,The Netherlands.,Department of Cardiology, Tergooi Hospital, Rijksstraatweg 1, AN, Blaricum, The Netherlands
| | - Carlie J M de Vries
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
| | - Vivian de Waard
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Academic Medical Center, University of Amsterdam, Meibergdreef 15, AZ, Amsterdam, The Netherlands
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13
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Effects of 6-mercaptopurine in pressure overload induced right heart failure. PLoS One 2019; 14:e0225122. [PMID: 31714926 PMCID: PMC6850541 DOI: 10.1371/journal.pone.0225122] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/29/2019] [Indexed: 11/28/2022] Open
Abstract
Background Several antineoplastic drugs have been proposed as new compounds for pulmonary arterial hypertension treatment but many have cardiotoxic side effects. The chemotherapeutic agent 6-mercaptopurine may have an effect in treatment of pulmonary arterial hypertension but at the same time, its effects on the afterload adaption of the right ventricle is unpredictable due to interaction with multiple downstream signalling pathways in the cardiomyocytes. We investigated the direct cardiac effects of 6-mercaptopurine in rats with isolated right heart failure caused by pulmonary trunk banding (PTB). Methods Male Wistar rat weanlings (112±2 g) were randomized to sham operation (sham, n = 10) or PTB. The PTB animals were randomized to placebo (PTB-control, n = 10) and 6-mercaptopurine (7.5 mg/kg/day) groups with treatment start before the PTB procedure (PTB-prevention, n = 10) or two weeks after (PTB-reversal, n = 10). Right ventricular effects were evaluated by echocardiography, cardiac MRI, invasive pressure-volume measurements, and histological and molecular analyses. Results PTB increased right ventricular afterload and caused right ventricular hypertrophy and failure. 6-mercaptopurine did not improve right ventricular function nor reduce right ventricular remodelling in both prevention and reversal studies compared with placebo-treated rats. Conclusion Treatment with 6-mercaptopurine did not have any beneficial or detrimental effects on right ventricular function or remodelling. Our data suggest that treatment of pulmonary arterial hypertension with 6-mercaptopurine is not harmful to the failing right ventricle.
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14
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Zhu N, Zhang GX, Yi B, Guo ZF, Jang S, Yin Y, Yang F, Summer R, Sun J. Nur77 limits endothelial barrier disruption to LPS in the mouse lung. Am J Physiol Lung Cell Mol Physiol 2019; 317:L615-L624. [PMID: 31461311 DOI: 10.1152/ajplung.00425.2018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Nur77 is an orphan nuclear receptor implicated in the regulation of a wide range of biological processes, including the maintenance of systemic blood vessel homeostasis. Although Nur77 is known to be expressed in the lung, its role in regulating pulmonary vascular functions remains entirely unknown. In this study, we found that Nur77 is expressed at high levels in the lung, and its expression is markedly upregulated in response to LPS administration. While the pulmonary vasculature of mice that lacked Nur77 appeared to function normally under homeostatic conditions, we observed a dramatic decrease in its barrier functions after exposure to LPS, as demonstrated by an increase in serum proteins in the bronchoalveolar lavage fluid and a reduction in the expression of endothelial junctional proteins, such as vascular endothelial cadherin (VE-cadherin) and β-catenin. Similarly, we found that siRNA knockdown of Nur77 in lung microvascular endothelial cells also reduced VE-cadherin and β-catenin expression and increased the quantity of fluorescein isothiocyanate-labeled dextran transporting across LPS-injured endothelial monolayers. Consistent with Nur77 playing a vascular protective role, we found that adenoviral-mediated overexpression of Nur77 both enhanced expression of VE-cadherin and β-catenin and augmented endothelial barrier protection to LPS in cultured cells. Mechanistically, Nur77 appeared to mediate its protective effects, at least in part, by binding to β-catenin and preventing its degradation. Our findings demonstrate a key role for Nur77 in the maintenance of lung endothelial barrier protection to LPS and suggest that therapeutic strategies aimed at augmenting Nur77 levels might be effective in treating a wide variety of inflammatory vascular diseases of the lung.
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Affiliation(s)
- Ni Zhu
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania.,Department of Cardiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Guan-Xin Zhang
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Bing Yi
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Zhi-Fu Guo
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Soohwa Jang
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Yongqiang Yin
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Fan Yang
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Ross Summer
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jianxin Sun
- Center for Translational Medicine and The Jane and Leonard Korman Respiratory Institute, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
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15
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Miralles F, Collinot H, Boumerdassi Y, Ducat A, Duché A, Renault G, Marchiol C, Lagoutte I, Bertholle C, Andrieu M, Jacques S, Méhats C, Vaiman D. Long-term cardiovascular disorders in the STOX1 mouse model of preeclampsia. Sci Rep 2019; 9:11918. [PMID: 31417152 PMCID: PMC6695383 DOI: 10.1038/s41598-019-48427-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 07/31/2019] [Indexed: 12/14/2022] Open
Abstract
Adverse long-term cardiovascular (CV) consequences of PE are well established in women. However, the mechanism responsible for that risk remains unknown. Here, we mated wild-type female mice of the FVB/N strain to STOX1A-overexpressing mice to mimic severe PE and investigated the long-term consequences on the maternal cardiovascular system. Ultrasonography parameters were analyzed in mice before pregnancy and at 3 and 6 months post-pregnancy. At 6 months post-pregnancy, cardiac stress test induced by dobutamine injection revealed an abnormal ultrasonography Doppler profile in mice with previous PE. Eight months post-pregnancy, the heart, endothelial cells (ECs) and plasma of females were analyzed and compared to controls. The heart of mice with PE showed left-ventricular hypertrophy associated with altered histology (fibrosis). Transcriptomic analysis revealed the deregulation of 1149 genes in purified ECs and of 165 genes in the hearts, many being involved in heart hypertrophy. In ECs, the upregulated genes were associated with inflammation and cellular stress. Systems biology analysis identified interleukin 6 (IL-6) as a hub gene connecting these pathways. Plasma profiling of 33 cytokines showed that, 8 of them (Cxcl13, Cxcl16, Cxcl11, IL-16, IL-10, IL-2, IL-4 and Ccl1) allowed to discriminate mice with previous PE from controls. Thus, PE triggers female long-term CV consequences on the STOX1 mouse model.
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Affiliation(s)
- Francisco Miralles
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Hélène Collinot
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Yasmine Boumerdassi
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Aurélien Ducat
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Angéline Duché
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, 27 rue du faubourg Saint Jacques, 75014, Paris, France
| | - Gilles Renault
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, PIV Platform, 22 rue Méchain, 75014, Paris, France
| | - Carmen Marchiol
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, PIV Platform, 22 rue Méchain, 75014, Paris, France
| | - Isabelle Lagoutte
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, PIV Platform, 22 rue Méchain, 75014, Paris, France
| | - Céline Bertholle
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, CYBIO Platform, 27 rue du Faubourg Saint Jacques, 75014, Paris, France
| | - Muriel Andrieu
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, CYBIO Platform, 27 rue du Faubourg Saint Jacques, 75014, Paris, France
| | - Sébastien Jacques
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, 27 rue du faubourg Saint Jacques, 75014, Paris, France
| | - Céline Méhats
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Daniel Vaiman
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Team "From Gametes To Birth", 24 rue du Faubourg St Jacques, 75014, Paris, France.
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16
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Wang XQY, Xu ZT, Zhang GP, Hou N, Mo QX, Wei J, Jiang X, Liu Y, Luo JD. Endophilin A2 attenuates cardiac hypertrophy induced by isoproterenol through the activation of autophagy. Am J Transl Res 2019; 11:5065-5075. [PMID: 31497222 PMCID: PMC6731414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
Decreased autophagy has been reported to contribute to the progression of cardiac hypertrophy. Our previous research has demonstrated that endophilin A2 (EndoA2) attenuates H2O2-induced cardiomyocyte apoptosis by strengthening autophagy. However, the role of EndoA2 in the regulation of autophagy in cardiac hypertrophy is unknown. In this study, we tested the hypothesis that EndoA2 suppresses cardiac hypertrophy induced by isoproterenol (ISO) by activating autophagy. In vivo, we established a cardiac hypertrophy model by subcutaneous injection of ISO and used intramyocardial delivery of adenovirus vector harboring EndoA2 cDNA (Ad-EndoA2) to overexpress EndoA2. The cardiac hypertrophic response and autophagy level were measured. EndoA2 overexpression suppressed pathological cardiac hypertrophy and enhanced autophagy in rat hearts. In addition, the effects of EndoA2 on cardiac hypertrophy and autophagy were observed in cultured neonatal rat cardiomyocytes (NRCMs) with gain- and loss-of-function approaches to regulate EndoA2 expression. The results were consistent with those of the in vivo study. Furthermore, the involvement of EndoA2-mediated autophagy in the attenuation of ISO-induced cardiac hypertrophy was explored by pharmaceutical inhibition of autophagy. Pretreatment with 3-methyladenine (3-MA) clearly diminished the anti-hypertrophic effects of EndoA2 in ISO-treated NRCMs. The results presented here provide the first evidence that EndoA2 is involved in ISO-induced cardiac hypertrophy. The anti-hypertrophic effects of EndoA2 can be partially attributed to its regulation of autophagy.
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Affiliation(s)
- Xin-Qiu-Yue Wang
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Zong-Tang Xu
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Gui-Ping Zhang
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Ning Hou
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Qin-Xing Mo
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Jie Wei
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Xin Jiang
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Yun Liu
- Key Laboratory of Molecular Target and Clinical Pharmacology and The State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 511436, Guangdong, P. R. China
| | - Jian-Dong Luo
- Department of Pharmacology, Guangzhou Institute of Cardiovascular Disease, Guangzhou Key Laboratory of Cardiovascular Disease, and The Second Affiliated Hospital, Guangzhou Medical UniversityGuangzhou 510260, Guangdong, P. R. China
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17
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Ashraf S, Hegazy YK, Harmancey R. Nuclear receptor subfamily 4 group A member 2 inhibits activation of ERK signaling and cell growth in response to β-adrenergic stimulation in adult rat cardiomyocytes. Am J Physiol Cell Physiol 2019; 317:C513-C524. [PMID: 31188636 PMCID: PMC6766613 DOI: 10.1152/ajpcell.00526.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Sustained elevation of sympathetic activity is an important contributor to pathological cardiac hypertrophy, ventricular arrhythmias, and left ventricular contractile dysfunction in chronic heart failure. The orphan nuclear receptor NR4A2 is an immediate early-response gene activated in the heart under β-adrenergic stimulation. The goal of this study was to identify the transcriptional remodeling events induced by increased NR4A2 expression in cardiomyocytes and their impact on the physiological response of those cells to sustained β-adrenergic stimulation. Treatment of adult rat ventricular myocytes with isoproterenol induced a rapid (<4 h) increase in NR4A2 levels that was accompanied by a transient (<24 h) increase in nuclear localization of the transcription factor. Adenovirus-mediated overexpression of NR4A2 to similar levels modulated the expression of genes linked to adrenoceptor signaling, calcium signaling, cell growth and proliferation and counteracted the increase in protein synthesis rate and cell surface area mediated by chronic isoproterenol stimulation. Consistent with those findings, NR4A2 overexpression also blocked the phosphorylative activation of growth-related kinases ERK1/2, Akt, and p70 S6 kinase. Prominent among the transcriptional changes induced by NR4A2 was the upregulation of the dual-specificity phosphatases DUSP2 and DUSP14, two known inhibitors of ERK1/2. Pretreatment of NR4A2-overexpressing cardiomyocytes with the DUSP inhibitor BCI [(E)-2-benzylidene-3-(cyclohexylamino)-2,3-dihydro-1H-inden-1-one] prevented the inhibition of ERK1/2 following isoproterenol stimulation. In conclusion, our results suggest that NR4A2 acts as a novel negative feedback regulator of the β-adrenergic receptor-mediated growth response in cardiomyocytes and this at least partly through DUSP-mediated inhibition of ERK1/2 signaling.
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Affiliation(s)
- Sadia Ashraf
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi
| | - Yassmin K Hegazy
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi
| | - Romain Harmancey
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, Mississippi.,Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi
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18
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Tian DM, Qiao J, Bao YZ, Liu J, Zhang XK, Sun XL, Zhang YW, Yao XS, Tang JS. Design and synthesis of biotinylated cardiac glycosides for probing Nur77 protein inducting pathway. Bioorg Med Chem Lett 2019; 29:707-712. [PMID: 30670347 DOI: 10.1016/j.bmcl.2019.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/13/2018] [Accepted: 01/15/2019] [Indexed: 12/31/2022]
Abstract
The orphan nuclear receptor Nur77 (also known as TR3 or nerve growth factor-induced clone B NGFI-B) functions as a nuclear transcription factor in the regulation of target gene expression and plays a critical role in the regulation of differentiation, proliferation, apoptosis, and survival of many different cell types. Recent studies demonstrate that Nur77 also involves many important physiological and pathological processes including cancer, inflammation and immunity, cardiovascular diseases, and bone diseases. Our previous studies showed that cardiac glycosides could induce the expression of Nur77 protein and its translocation from the nucleus to the cytoplasm and subsequent targeting to mitochondria, leading to apoptosis of cancer cells. In order to probe the Nur77 protein inducting pathway, we designed and synthesized a series of novel biotinylated cardiac glycosides from β-Antiarin and α-Antiarin, two typical cardiac glycosides from the plant of Antiaris toxicaria. The induction of Nur77 protein expression of these biotinylated cardiac glycosides and their inhibitory effects on NIH-H460 cancer cell proliferation were evaluated. Results displayed that some biotinylated cardiac glycosides could significantly induce the expression of Nur77 protein comparable with their parent compounds β-Antiarin and α-Antiarin. Also, their streptavidin binding activities were evaluated. Among them, biotinylated cardiac glycosides P4b and P5a exhibited significant effect on the induction of Nur77 expression along with high binding capacity with streptavidin, suggesting that they can be used as probes for probing Nur77 protein inducting pathway.
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Affiliation(s)
- Dan-Mei Tian
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China
| | - Jia Qiao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China
| | - Yu-Zhou Bao
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, People's Republic of China
| | - Jie Liu
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xiao-Kun Zhang
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xue-Long Sun
- Department of Chemistry, Chemical and Biomedical Engineering and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, 2121 Euclid Avenue, Cleveland, OH 44115, United States
| | - You-Wei Zhang
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, United States
| | - Xin-Sheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.
| | - Jin-Shan Tang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.
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19
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Medzikovic L, de Vries CJM, de Waard V. NR4A nuclear receptors in cardiac remodeling and neurohormonal regulation. Trends Cardiovasc Med 2018; 29:429-437. [PMID: 30553703 DOI: 10.1016/j.tcm.2018.11.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 11/07/2018] [Accepted: 11/26/2018] [Indexed: 01/08/2023]
Abstract
Heart failure is characterized by the constant interplay between the underlying cardiac insult, degree of myocardial dysfunction and the activity of compensatory neurohormonal mechanisms. The sympathetic nervous system (SNS) and renin-angiotensin-aldosterone system (RAAS) become activated to maintain cardiac output; however, their chronic hyperactivity will eventually become deleterious. Several nuclear hormone receptors, including the mineralocorticoid receptor and estrogen receptor, are well-known to modulate cardiac disease. Recently, the subfamily of NR4A nuclear receptors i.e. Nur77, Nurr1 and NOR-1, are emerging as key players in cardiac stress responses, as well as pivotal regulators of neurohormonal mechanisms. In this review, we summarize current literature on NR4A nuclear receptors in the heart and in various components of the SNS, RAAS and immune system and discuss the functional implications for NR4As in cardiac function and disease.
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Affiliation(s)
- Lejla Medzikovic
- Department of Medical Biochemistry, Amsterdam UMC, University of Amsterdam, Academic Medical Center, Amsterdam Cardiovascular Sciences, Meibergdreef 9, room K1-115, 1105 AZ Amsterdam, The Netherlands
| | - Carlie J M de Vries
- Department of Medical Biochemistry, Amsterdam UMC, University of Amsterdam, Academic Medical Center, Amsterdam Cardiovascular Sciences, Meibergdreef 9, room K1-115, 1105 AZ Amsterdam, The Netherlands
| | - Vivian de Waard
- Department of Medical Biochemistry, Amsterdam UMC, University of Amsterdam, Academic Medical Center, Amsterdam Cardiovascular Sciences, Meibergdreef 9, room K1-115, 1105 AZ Amsterdam, The Netherlands.
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You X, Guo ZF, Cheng F, Yi B, Yang F, Liu X, Zhu N, Zhao X, Yan G, Ma XL, Sun J. Transcriptional up-regulation of relaxin-3 by Nur77 attenuates β-adrenergic agonist-induced apoptosis in cardiomyocytes. J Biol Chem 2018; 293:14001-14011. [PMID: 30006349 DOI: 10.1074/jbc.ra118.003099] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 07/12/2018] [Indexed: 12/28/2022] Open
Abstract
The relaxin family peptides have been shown to exert several beneficial effects on the heart, including anti-apoptosis, anti-fibrosis, and anti-hypertrophy activity. Understanding their regulation might provide new opportunities for therapeutic interventions, but the molecular mechanism(s) coordinating relaxin expression in the heart remain largely obscured. Previous work demonstrated a role for the orphan nuclear receptor Nur77 in regulating cardiomyocyte apoptosis. We therefore investigated Nur77 in the hopes of identifying novel relaxin regulators. Quantitative real-time PCR (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA) data indicated that ectopic expression of orphan nuclear receptor Nur77 markedly increased the expression of latexin-3 (RLN3), but not relaxin-1 (RLN1), in neonatal rat ventricular cardiomyocytes (NRVMs). Furthermore, we found that the β-adrenergic agonist isoproterenol (ISO) markedly stimulated RLN3 expression, and this stimulation was significantly attenuated in Nur77 knockdown cardiomyocytes and Nur77 knockout hearts. We showed that Nur77 significantly increased RLN3 promoter activity via specific binding to the RLN3 promoter, as demonstrated by electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) assays. Furthermore, we found that Nur77 overexpression potently inhibited ISO-induced cardiomyocyte apoptosis, whereas this protective effect was significantly attenuated in RLN3 knockdown cardiomyocytes, suggesting that Nur77-induced RLN3 expression is an important mediator for the suppression of cardiomyocyte apoptosis. These findings show that Nur77 regulates RLN3 expression, therefore suppressing apoptosis in the heart, and suggest that activation of Nur77 may represent a useful therapeutic strategy for inhibition of cardiac fibrosis and heart failure.
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Affiliation(s)
- Xiaohua You
- From the Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.,the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Zhi-Fu Guo
- From the Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.,the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Fang Cheng
- the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Bing Yi
- the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Fan Yang
- the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Xinzhu Liu
- the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Ni Zhu
- From the Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Xianxian Zhao
- From the Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Guijun Yan
- the Reproductive Medicine Center, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 211166, China
| | - Xin-Liang Ma
- the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Jianxin Sun
- From the Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China, .,the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
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21
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Koentges C, Pepin ME, Müsse C, Pfeil K, Alvarez SVV, Hoppe N, Hoffmann MM, Odening KE, Sossalla S, Zirlik A, Hein L, Bode C, Wende AR, Bugger H. Gene expression analysis to identify mechanisms underlying heart failure susceptibility in mice and humans. Basic Res Cardiol 2017; 113:8. [PMID: 29288409 DOI: 10.1007/s00395-017-0666-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 12/19/2017] [Indexed: 12/27/2022]
Abstract
Genetic factors are known to modulate cardiac susceptibility to ventricular hypertrophy and failure. To determine how strain influences the transcriptional response to pressure overload-induced heart failure (HF) and which of these changes accurately reflect the human disease, we analyzed the myocardial transcriptional profile of mouse strains with high (C57BL/6J) and low (129S1/SvImJ) susceptibility for HF development, which we compared to that of human failing hearts. Following transverse aortic constriction (TAC), C57BL/6J mice developed overt HF while 129S1/SvImJ did not. Despite a milder aortic constriction, impairment of ejection fraction and ventricular remodeling (dilation, fibrosis) was more pronounced in C57BL/6J mice. Similarly, changes in myocardial gene expression were more robust in C57BL/6J (461 genes) compared to 129S1/SvImJ mice (71 genes). When comparing these patterns to human dilated cardiomyopathy (1344 genes), C57BL/6J mice tightly grouped to human hearts. Overlay and bioinformatic analysis of the transcriptional profiles of C57BL/6J mice and human failing hearts identified six co-regulated genes (POSTN, CTGF, FN1, LOX, NOX4, TGFB2) with established link to HF development. Pathway enrichment analysis identified angiotensin and IGF-1 signaling as most enriched putative upstream regulator and pathway, respectively, shared between TAC-induced HF in C57BL/6J mice and in human failing hearts. TAC-induced heart failure in C57BL/6J mice more closely reflects the gene expression pattern of human dilated cardiomyopathy compared to 129S1/SvImJ mice. Unbiased as well as targeted gene expression and pathway analyses identified periostin, angiotensin signaling, and IGF-1 signaling as potential causes of increased HF susceptibility in C57BL/6J mice and as potentially useful drug targets for HF treatment.
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Affiliation(s)
- Christoph Koentges
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Mark E Pepin
- Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, 901 19th Street South, BMR2 Rm 506, Birmingham, AL, 35294, USA
| | - Carolyn Müsse
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Katharina Pfeil
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Sonia V Viteri Alvarez
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Natalie Hoppe
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Michael M Hoffmann
- Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Institute for Clinical Chemistry and Laboratory Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - Katja E Odening
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Samuel Sossalla
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Andreas Zirlik
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Lutz Hein
- Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Institute of Experimental and Clinical Pharmacology, BIOSS Center for Biological Signaling Studies, University of Freiburg, Freiburg, Germany
| | - Christoph Bode
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Adam R Wende
- Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, 901 19th Street South, BMR2 Rm 506, Birmingham, AL, 35294, USA.
| | - Heiko Bugger
- Cardiology and Angiology I, Heart Center, Freiburg University, Hugstetter Str. 55, 79106, Freiburg, Germany. .,Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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22
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Borchert T, Hübscher D, Guessoum CI, Lam TDD, Ghadri JR, Schellinger IN, Tiburcy M, Liaw NY, Li Y, Haas J, Sossalla S, Huber MA, Cyganek L, Jacobshagen C, Dressel R, Raaz U, Nikolaev VO, Guan K, Thiele H, Meder B, Wollnik B, Zimmermann WH, Lüscher TF, Hasenfuss G, Templin C, Streckfuss-Bömeke K. Catecholamine-Dependent β-Adrenergic Signaling in a Pluripotent Stem Cell Model of Takotsubo Cardiomyopathy. J Am Coll Cardiol 2017; 70:975-991. [PMID: 28818208 DOI: 10.1016/j.jacc.2017.06.061] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/17/2017] [Accepted: 06/22/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND Takotsubo syndrome (TTS) is characterized by an acute left ventricular dysfunction and is associated with life-threating complications in the acute phase. The underlying disease mechanism in TTS is still unknown. A genetic basis has been suggested to be involved in the pathogenesis. OBJECTIVES The aims of the study were to establish an in vitro induced pluripotent stem cell (iPSC) model of TTS, to test the hypothesis of altered β-adrenergic signaling in TTS iPSC-cardiomyocytes (CMs), and to explore whether genetic susceptibility underlies the pathophysiology of TTS. METHODS Somatic cells of patients with TTS and control subjects were reprogrammed to iPSCs and differentiated into CMs. Three-month-old CMs were subjected to catecholamine stimulation to simulate neurohumoral overstimulation. We investigated β-adrenergic signaling and TTS cardiomyocyte function. RESULTS Enhanced β-adrenergic signaling in TTS-iPSC-CMs under catecholamine-induced stress increased expression of the cardiac stress marker NR4A1; cyclic adenosine monophosphate levels; and cyclic adenosine monophosphate-dependent protein kinase A-mediated hyperphosphorylation of RYR2-S2808, PLN-S16, TNI-S23/24, and Cav1.2-S1928, and leads to a reduced calcium time to transient 50% decay. These cellular catecholamine-dependent responses were mainly mediated by β1-adrenoceptor signaling in TTS. Engineered heart muscles from TTS-iPSC-CMs showed an impaired force of contraction and a higher sensitivity to isoprenaline-stimulated inotropy compared with control subjects. In addition, altered electrical activity and increased lipid accumulation were detected in catecholamine-treated TTS-iPSC-CMs, and were confirmed by differentially expressed lipid transporters CD36 and CPT1C. Furthermore, we uncovered genetic variants in different key regulators of cardiac function. CONCLUSIONS Enhanced β-adrenergic signaling and higher sensitivity to catecholamine-induced toxicity were identified as mechanisms associated with the TTS phenotype. (International Takotsubo Registry [InterTAK Registry] [InterTAK]; NCT01947621).
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Affiliation(s)
- Thomas Borchert
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Daniela Hübscher
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Celina I Guessoum
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Tuan-Dinh D Lam
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Jelena R Ghadri
- University Heart Center, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Isabel N Schellinger
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Malte Tiburcy
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Göttingen, Germany
| | - Norman Y Liaw
- Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Göttingen, Germany
| | - Yun Li
- Institute of Human Genetics, University Hospital Center Göttingen, Göttingen, Germany
| | - Jan Haas
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
| | - Samuel Sossalla
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany; Klinik für Innere Medizin II, University Medical Center Regensburg, Germany
| | - Mia A Huber
- University Heart Center, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Lukas Cyganek
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Claudius Jacobshagen
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Ralf Dressel
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany
| | - Uwe Raaz
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Viacheslav O Nikolaev
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Kaomei Guan
- Institute of Pharmacology and Toxicology, Technische Universität Dresden, Dresden, Germany
| | - Holger Thiele
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Benjamin Meder
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
| | - Bernd Wollnik
- Institute of Human Genetics, University Hospital Center Göttingen, Göttingen, Germany
| | | | - Thomas F Lüscher
- University Heart Center, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Gerd Hasenfuss
- Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Christian Templin
- University Heart Center, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
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23
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Effects of 4(1H)-quinolinone derivative, a novel non-nucleotide allosteric purinergic P2Y 2 agonist, on cardiomyocytes in neonatal rats. Sci Rep 2017; 7:6050. [PMID: 28729619 PMCID: PMC5519634 DOI: 10.1038/s41598-017-06481-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 06/13/2017] [Indexed: 02/07/2023] Open
Abstract
Purinergic P2Y2 receptors, G-protein coupled receptors that primarily couple with Gαq/11-proteins, are activated equipotently by adenosine-5′-triphosphate (ATP) and uridine-5′-triphosphate. Evidence suggests that P2Y2 agonists make potential drug candidates for the treatment of cardiovascular diseases. However, selective non-nucleotide, small-molecule P2Y2 agonists have yet to be developed. In this report, we discuss Compound 89, a novel non-nucleotide allosteric P2Y2 agonist that was active in signal transduction and gene induction, and in our in vitro cardiac hypertrophy model. Compound 89 exhibited selective P2Y2 agonistic activity and potentiated responses to the endogenous agonist ATP, while exhibiting no agonistic activities for four other Gαq/11-coupled human P2Y (hP2Y) receptors and one representative Gαi/o-coupled hP2Y12 receptor. Its P2Y2 agonistic effect on mouse P2Y2 receptors suggested non-species-specific activity. Compound 89 acted as a pure positive allosteric modulator in a Ca2+ mobilization assay of neonatal rat cardiomyocytes; it potentiated ATP-induced expression of genes in the nuclear receptor 4A family (negative regulators of hypertrophic stimuli in cardiomyocytes). Additionally, Compound 89 attenuated isoproterenol-induced cardiac hypertrophy, presumably through dose-dependent interaction with pericellular ATP. These results indicate that Compound 89 is potentially efficacious against cardiomyocytes and therefore a good proof-of-concept tool for elucidating the therapeutic potential of P2Y2 activation in various cardiovascular diseases.
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24
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Vega RB, Kelly DP. Cardiac nuclear receptors: architects of mitochondrial structure and function. J Clin Invest 2017; 127:1155-1164. [PMID: 28192373 DOI: 10.1172/jci88888] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The adult heart is uniquely designed and equipped to provide a continuous supply of energy in the form of ATP to support persistent contractile function. This high-capacity energy transduction system is the result of a remarkable surge in mitochondrial biogenesis and maturation during the fetal-to-adult transition in cardiac development. Substantial evidence indicates that nuclear receptor signaling is integral to dynamic changes in the cardiac mitochondrial phenotype in response to developmental cues, in response to diverse postnatal physiologic conditions, and in disease states such as heart failure. A subset of cardiac-enriched nuclear receptors serve to match mitochondrial fuel preferences and capacity for ATP production with changing energy demands of the heart. In this Review, we describe the role of specific nuclear receptors and their coregulators in the dynamic control of mitochondrial biogenesis and energy metabolism in the normal and diseased heart.
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25
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Rodríguez-Calvo R, Tajes M, Vázquez-Carrera M. The NR4A subfamily of nuclear receptors: potential new therapeutic targets for the treatment of inflammatory diseases. Expert Opin Ther Targets 2017; 21:291-304. [PMID: 28055275 DOI: 10.1080/14728222.2017.1279146] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Prolonged inflammatory response contributes to the pathogenesis of chronic disease-related disturbances. Among nuclear receptors (NRs), the orphan NR4A subfamily, which includes Nur77 (NR4A1), Nurr1 (NR4A2) and NOR1 (NR4A3), has recently emerged as a therapeutic target for the treatment of inflammation. Areas covered: This review focuses on the capacity of NR4A receptors to counter-regulate the development of the inflammatory response, with a special focus on the molecular transrepression mechanisms. Expert opinion: Recent studies have highlighted the role of NR4A receptors as significant regulators of the inflammatory response. NR4A receptors are rapidly induced by inflammatory stimuli, thus suggesting that they are required for the initiation of inflammation. Nevertheless, NR4A anti-inflammatory properties indicate that this acute regulation could be a protective reaction aimed at resolving inflammation in the later stages. Therefore, NR4A receptors are involved in a negative feedback mechanism to maintain the inflammatory balance. However, the underlying mechanisms are not entirely clear. Only a small number of NR4A-target genes have been identified, and the transcriptional repression mechanisms are only beginning to emerge. Despite further research is needed to fully understand the role of NR4A receptors in inflammation, these NRs should be considered as targets for new therapeutic approaches to inflammatory diseases.
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Affiliation(s)
- Ricardo Rodríguez-Calvo
- a Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Pere Virgili Health Research Institute (IISPV) and Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)-Instituto de Salud Carlos III, Faculty of Medicine and Health Sciences , Rovira i Virgili University , Reus , Spain
| | - Marta Tajes
- b Heart Diseases Biomedical Research Group, Inflammatory and Cardiovascular Disorders Program , Hospital del Mar Medical Research Institute (IMIM), Parc de Salut Mar , Barcelona , Spain
| | - Manuel Vázquez-Carrera
- c Department of Pharmacology, Toxicology and Therapeutic Chemistry, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Institut de Recerca Pediàtrica-Hospital Sant Joan de Déu, and Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)-Instituto de Salud Carlos III, Faculty of Pharmacy, Diagonal 643 , University of Barcelona , Barcelona , Spain
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26
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Bux AS, Lindsey ML, Vasquez HG, Taegtmeyer H, Harmancey R. Glucose regulates the intrinsic inflammatory response of the heart to surgically induced hypothermic ischemic arrest and reperfusion. Physiol Genomics 2016; 49:37-52. [PMID: 27940566 DOI: 10.1152/physiolgenomics.00102.2016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 11/28/2016] [Accepted: 12/06/2016] [Indexed: 12/15/2022] Open
Abstract
We investigated the isolated working rat heart as a model to study early transcriptional remodeling induced in the setting of open heart surgery and stress hyperglycemia. Hearts of male Sprague Dawley rats were cold-arrested in Krebs-Henseleit buffer and subjected to 60 min normothermic reperfusion in the working mode with buffer supplemented with noncarbohydrate substrates plus glucose (25 mM) or mannitol (25 mM; osmotic control). Gene expression profiles were determined by microarray analysis and compared with those of nonperfused hearts. Perfused hearts displayed a transcriptional signature independent from the presence of glucose showing a more than twofold increase in expression of 71 genes connected to inflammation, cell proliferation, and apoptosis. These transcriptional alterations were very similar to the ones taking place in the hearts of open heart surgery patients. Prominent among those alterations was the upregulation of the three master regulators of metabolic reprogramming, MYC, NR4A1, and NR4A2. Targeted pathway analysis revealed an upregulation of metabolic processes associated with the proliferation and activation of macrophages and fibroblasts. Glucose potentiated the upregulation of a subset of genes associated with polarization of tissue reparative M2-like macrophages, an effect that was lost in perfused hearts from rats rendered insulin resistant by high-sucrose feeding. The results expose the heart as a significant source of proinflammatory mediators released in response to stress associated with cardiac surgery with cardiopulmonary bypass, and suggest a major role for glucose as a signal in the determination of resident cardiac macrophage polarization.
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Affiliation(s)
- Ahmed S Bux
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi; and
| | - Merry L Lindsey
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi; and
| | - Hernan G Vasquez
- Department of Internal Medicine, Division of Cardiology, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Heinrich Taegtmeyer
- Department of Internal Medicine, Division of Cardiology, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Romain Harmancey
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, Mississippi; and
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Jiang Y, Jiang R, Cheng X, Zhang Q, Hu Y, Zhang H, Cao Y, Zhang M, Wang J, Ding L, Diao Z, Sun H, Yan G. Decreased expression of NR4A nuclear receptors in adenomyosis impairs endometrial decidualization. Mol Hum Reprod 2016; 22:655-68. [PMID: 27515096 DOI: 10.1093/molehr/gaw042] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 06/22/2016] [Indexed: 12/23/2022] Open
Abstract
STUDY QUESTION How do NR4A receptors drive decidualization of human endometrial stromal cells (hESCs)? SUMMARY ANSWER NR4A receptors modulate endometrial decidualization by transcriptional activation of FOXO1A, and in adenomyosis patients, the reduced expression of NR4A receptors in the eutopic endometrium may represent a novel mechanism to explain impaired decidualization and subfertility. WHAT IS KNOWN ALREADY A close relationship between impaired decidualization and subfertility has been established. In human endometrial stromal cells, orphan nuclear receptor NR4A is a novel regulator of decidualization. STUDY DESIGN, SAMPLES/MATERIALS, METHODS Eutopic endometrial tissues and hESCs from fertile controls (n = 56) and adenomyosis patients (n = 27) were collected for in vitro analysis. Primary hESCs isolated from eutopic endometrial tissues were used to evaluate the biological function of NR4A receptors. Adenovirus-mediated overexpression of NR4A and small interfering RNAs targeting NR4A, and FOXO1A were used to investigate the molecular mechanisms. Gene expression regulation was examined by real-time-quantitative PCR, immunostaining, and luciferase reporter assay. Artificial decidualization assay was performed to investigate the role of NR4A1 during decidualization in vivo. MAIN RESULTS AND THE ROLE OF CHANCE NR4A modulates the decidualization of hESCs by upregulating prolactin (PRL) and insulin-like growth factor binding protein-1 (IGFBP-1) expression and transformation in vitro. Loss of uterine Nr4a1 results in female subfertility due to impaired decidualization. Mechanistically, NR4A binds to the nerve growth factor 1B (NGFI-B) -responsive element (NBRE) (-843 to -813) within the FOXO1A promoter region and regulates FOXO1A expression. Loss of FOXO1A significantly inhibits PRL and IGFBP-1 expression, as induced by NR4A. Moreover, the expression of NR4A and FOXO1A was lower in adenomyosis endometrial tissues compared to fertile controls, especially in stroma compartments. Ectopic NR4A expression rescued PRL and IGFBP-1 expression in adenomyotic hESCs to near-normal levels. Furthermore, PI3K/AKT signaling pathway involved in inducing NR4A expression under decidualization stimuli in hESCs and the level of p(Ser473)-AKT was significantly higher in stroma in endometrium from patients with adenomyosis. LIMITATIONS, REASONS FOR CAUTION This is an in vitro study with a small sample size, utilizing stromal cell cultures from endometrial tissues of adenomyosis patients. Furthermore, results obtained should also be confirmed in a larger data set and with adenomyosis mouse models in vivo. WIDER IMPLICATIONS OF THE FINDINGS Identification of a positive agonist of NR4A receptors will be critical for the improved treatment of patients with conditions of insufficient decidualization-associated infertility, such as adenomyosis and endometriosis. LARGE SCALE DATA N/A. STUDY FUNDING AND COMPETING INTERESTS This study was supported by the National Natural Science Foundation of China (81170570, G.J.Y. 81370683, G.J.Y. 81501251, Y.J. 31571189, H.X.S. and 81571402, G.J.Y.), and a special grant for clinical medicine science of Jiangsu Province (BL2014003, H.X.S.). The authors have no conflicts of interest to declare.
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Affiliation(s)
- Yue Jiang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Ruiwei Jiang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Xi Cheng
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Qun Zhang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Yali Hu
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China Molecular Reproductive Medical Center of Nanjing University, Nanjing 210008, People's Republic of China
| | - Hui Zhang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Yun Cao
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Mei Zhang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Junxia Wang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Lijun Ding
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Zhenyu Diao
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Haixiang Sun
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China Molecular Reproductive Medical Center of Nanjing University, Nanjing 210008, People's Republic of China Collaborative Innovation Platform for Reproductive Biology and Technology of Nanjing University Medical School, Nanjing 210008, People's Republic of China
| | - Guijun Yan
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, People's Republic of China Molecular Reproductive Medical Center of Nanjing University, Nanjing 210008, People's Republic of China Collaborative Innovation Platform for Reproductive Biology and Technology of Nanjing University Medical School, Nanjing 210008, People's Republic of China
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Suzuki H, Katanasaka Y, Sunagawa Y, Miyazaki Y, Funamoto M, Wada H, Hasegawa K, Morimoto T. Tyrosine phosphorylation of RACK1 triggers cardiomyocyte hypertrophy by regulating the interaction between p300 and GATA4. Biochim Biophys Acta Mol Basis Dis 2016; 1862:1544-57. [PMID: 27208796 DOI: 10.1016/j.bbadis.2016.05.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 04/28/2016] [Accepted: 05/11/2016] [Indexed: 01/05/2023]
Abstract
The zinc finger protein GATA4 is a transcription factor involved in cardiomyocyte hypertrophy. It forms a functional complex with the intrinsic histone acetyltransferase (HAT) p300. The HAT activity of p300 is required for the acetylation and transcriptional activity of GATA4, as well as for cardiomyocyte hypertrophy and the development of heart failure. In the present study, we have identified Receptor for Activated Protein Kinase C1 (RACK1) as a novel GATA4-binding protein using tandem affinity purification and mass spectrometry analyses. We found that exogenous RACK1 repressed phenylephrine (PE)-induced hypertrophic responses, such as myofibrillar organization, increased cell size, and hypertrophy-associated gene transcription, in cultured cardiomyocytes. RACK1 physically interacted with GATA4 and the overexpression of RACK1 reduced PE-induced formation of the p300/GATA4 complex and the acetylation and DNA binding activity of GATA4. In response to hypertrophic stimulation in cultured cardiomyocytes and in the hearts of hypertensive heart disease model rats, the tyrosine phosphorylation of RACK1 was increased, and the binding between GATA4 and RACK1 was reduced. In addition, the tyrosine phosphorylation of RACK1 was required for the disruption of the RACK1/GATA4 complex and for the formation of the p300/GATA4 complex. These findings demonstrate that RACK1 is involved in p300/GATA4-dependent hypertrophic responses in cardiomyocytes and is a promising therapeutic target for heart failure.
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Affiliation(s)
- Hidetoshi Suzuki
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Yasufumi Katanasaka
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan; Division of Translational Research, Clinical Research Institute, Kyoto Medical Center, National Hospital Organization, Kyoto, Japan; Shizuoka General Hospital, Shizuoka, Japan
| | - Yoichi Sunagawa
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan; Division of Translational Research, Clinical Research Institute, Kyoto Medical Center, National Hospital Organization, Kyoto, Japan; Shizuoka General Hospital, Shizuoka, Japan
| | - Yusuke Miyazaki
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Masafumi Funamoto
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hiromichi Wada
- Division of Translational Research, Clinical Research Institute, Kyoto Medical Center, National Hospital Organization, Kyoto, Japan
| | - Koji Hasegawa
- Division of Translational Research, Clinical Research Institute, Kyoto Medical Center, National Hospital Organization, Kyoto, Japan
| | - Tatsuya Morimoto
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan; Division of Translational Research, Clinical Research Institute, Kyoto Medical Center, National Hospital Organization, Kyoto, Japan; Shizuoka General Hospital, Shizuoka, Japan.
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29
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Puhl SL, Weeks KL, Ranieri A, Avkiran M. Assessing structural and functional responses of murine hearts to acute and sustained β-adrenergic stimulation in vivo. J Pharmacol Toxicol Methods 2016; 79:60-71. [PMID: 26836145 PMCID: PMC4840275 DOI: 10.1016/j.vascn.2016.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/28/2016] [Accepted: 01/29/2016] [Indexed: 11/18/2022]
Abstract
Introduction Given the importance of β-adrenoceptor signalling in regulating cardiac structure and function, robust protocols are required to assess potential alterations in such regulation in murine models in vivo. Methods Echocardiography was performed in naïve and stressed (isoprenaline; 30 μg/g/day s.c. for up to 14 days) mice, in the absence or presence of acute β-adrenergic stimulation (dobutamine 0.75 μg/g, i.p.). Controls received saline infusion and/or injection. Hearts were additionally analysed gravimetrically, histologically and biochemically. Results In naïve mice, acute β-adrenoceptor stimulation with dobutamine increased heart rate, left ventricular (LV) fractional shortening (LVFS), ejection fraction (LVEF) and wall thickness and decreased LV diameter (p < 0.05). In stressed mice, dobutamine failed to induce further inotropic and chronotropic responses. Furthermore, following dobutamine injection, these mice exhibited lower LVEF and LVFS at identical heart rates, relative to corresponding controls. Sustained isoprenaline infusion induced LV hypertrophy (increased heart weight, heart weight/body weight ratio, heart weight/tibia length ratio and LV wall thickness (p < 0.05)) by 3 days, with little further change at 14 days. In contrast, increases in LVEF and LVFS were seen only at 14 days (p < 0.05). Discussion We describe protocols for and illustrative data from the assessment of murine cardiac responses to acute and sustained β-adrenergic stimulation in vivo, which would be of value in determining the impact of genetic or pharmacological interventions on such responses. Additionally, our data indicate that acute dobutamine stimulation unmasks early signs of LV dysfunction in the remodelled heart, even at a stage when basal function is enhanced.
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Affiliation(s)
- Sarah-Lena Puhl
- Cardiovascular Division, King's College London British Heart Foundation Centre of Research Excellence, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, United Kingdom.
| | - Kate L Weeks
- Cardiovascular Division, King's College London British Heart Foundation Centre of Research Excellence, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, United Kingdom.
| | - Antonella Ranieri
- Cardiovascular Division, King's College London British Heart Foundation Centre of Research Excellence, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, United Kingdom.
| | - Metin Avkiran
- Cardiovascular Division, King's College London British Heart Foundation Centre of Research Excellence, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, United Kingdom.
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30
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Yang P, Wei X, Zhang J, Yi B, Zhang GX, Yin L, Yang XF, Sun J. Antithrombotic Effects of Nur77 and Nor1 Are Mediated Through Upregulating Thrombomodulin Expression in Endothelial Cells. Arterioscler Thromb Vasc Biol 2015; 36:361-9. [PMID: 26634653 DOI: 10.1161/atvbaha.115.306891] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 11/23/2015] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Thrombomodulin is highly expressed on the lumenal surface of vascular endothelial cells (ECs) and possesses potent anticoagulant, antifibrinolytic, and anti-inflammatory activities in the vessel wall. However, the regulation of thrombomodulin expression in ECs remains largely unknown. APPROACHES AND RESULTS In this study, we characterized nuclear receptor 4A family as a novel regulator of thrombomodulin expression in vascular ECs. We demonstrated that both nuclear receptors 4A, Nur77 and Nor1, robustly increase thrombomodulin mRNA and protein levels in human vascular ECs and in mouse liver tissues after adenovirus-mediated transduction of Nur77 and Nor1 cDNAs. Moreover, Nur77 deficiency and knockdown of Nur77 and Nor1 expression markedly attenuated the basal and vascular endothelial growth factor165-stimulated thrombomodulin expression. Mechanistically, we found that Nur77 and Nor1 increase thrombomodulin expression by acting through 2 different mechanisms. We showed that Nur77 barely affects thrombomodulin promoter activity, but significantly increases thrombomodulin mRNA stability, whereas Nor1 enhances thrombomodulin expression mainly through induction of Kruppel-like factors 2 and 4 in vascular ECs. Furthermore, we demonstrated that both Nur77 and Nor1 significantly increase protein C activity and inhibit tumor necrosis factor α-induced prothrombotic effects in human ECs. Deficiency of Nur77 increases susceptibility to arterial thrombosis, whereas enhanced expression of Nur77 and Nor1 protects mice from arterial thrombus formation. CONCLUSIONS Our results identified nuclear receptors 4A as novel regulators of thrombomodulin expression and function in vascular ECs and provided a proof-of-concept demonstration that targeted increasing expression of Nur77 and Nor1 in the vascular endothelium might represent a novel therapeutic approach for the treatment of thrombotic disorders.
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Affiliation(s)
- Ping Yang
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Xin Wei
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Jian Zhang
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Bing Yi
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Guan-Xin Zhang
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Litian Yin
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Xiao-Feng Yang
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.)
| | - Jianxin Sun
- From the Department of Pharmacy, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China (P.Y., X.W., J.Z.); Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA (P.Y., X.W., B.Y., G-.X.Z.,L.Y., J.S.); and Centers of Metabolic Disease Research and Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA (X-.F.Y.).
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31
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Orphan nuclear receptor Nur77 affects cardiomyocyte calcium homeostasis and adverse cardiac remodelling. Sci Rep 2015; 5:15404. [PMID: 26486271 PMCID: PMC4613907 DOI: 10.1038/srep15404] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 09/21/2015] [Indexed: 12/22/2022] Open
Abstract
Distinct stressors may induce heart failure. As compensation, β-adrenergic stimulation enhances myocardial contractility by elevating cardiomyocyte intracellular Ca2+ ([Ca2+]i). However, chronic β-adrenergic stimulation promotes adverse cardiac remodelling. Cardiac expression of nuclear receptor Nur77 is enhanced by β-adrenergic stimulation, but its role in cardiac remodelling is still unclear. We show high and rapid Nur77 upregulation in cardiomyocytes stimulated with β-adrenergic agonist isoproterenol. Nur77 knockdown in culture resulted in hypertrophic cardiomyocytes. Ventricular cardiomyocytes from Nur77-deficient (Nur77-KO) mice exhibited elevated diastolic and systolic [Ca2+]i and prolonged action potentials compared to wild type (WT). In vivo, these differences resulted in larger cardiomyocytes, increased expression of hypertrophic genes, and more cardiac fibrosis in Nur77-KO mice upon chronic isoproterenol stimulation. In line with the observed elevated [Ca2+]i, Ca2+-activated phosphatase calcineurin was more active in Nur77-KO mice compared to WT. In contrast, after cardiac pressure overload by aortic constriction, Nur77-KO mice exhibited attenuated remodelling compared to WT. Concluding, Nur77-deficiency results in significantly altered cardiac Ca2+ homeostasis and distinct remodelling outcome depending on the type of insult. Detailed knowledge on the role of Nur77 in maintaining cardiomyocyte Ca2+ homeostasis and the dual role Nur77 plays in cardiac remodelling will aid in developing personalized therapies against heart failure.
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