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Huang Y, Dai H. ATF3 affects myocardial fibrosis remodeling after myocardial infarction by regulating autophagy and its mechanism of action. Gene 2023; 885:147705. [PMID: 37572799 DOI: 10.1016/j.gene.2023.147705] [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: 05/31/2023] [Revised: 07/18/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
BACKGROUND & OBJECTIVE Myocardial fibrosis remodeling is a key event in the development of heart anomalousness and dysfunction after myocardial infarction (MI). The purpose of this study was to explore the effect of activating transcription factor 3 (ATF3) on myocardial fibrosis remodeling after MI and its underlying mechanism, so as to provide a theoretical basis for the clinical development of new strategies for MI treatment. METHODS MI mouse formers were structured by hypodesmus of the left anterior descending (LAD) arteria coronaria of mice, and primary cardiac fibroblasts (CFs) were separated and cultivated to investigate the effect of ATF3 on myocardial fibrosis after MI and its mechanism. RESULTS Increased collagen content and autophagic flux were found in the left ventricle (LV) tissues of MI mice as shown by Sirius red staining and Western blotting (WB) analysis. Meanwhile, immunofluorescence staining and WB analysis showed that ATF3 was raised in response to MI damage. After remedy with angiotensin II (AngII), the activity and differentiation of CFs were significantly raised, the expression of collagens was increased, and the level of autophagy was notably increased. Furthermore, AngII stimulation remarkably raised the expression of ATF3. Interestingly, knockdown of ATF3 in AngII-CFs reversed the above changes. In addition, after intervention with 3-methyladenine (3-MA), an autophagy restrainer, the activity and differentiation of AngII-CFs, as well as the relative collagen levels and autophagic flux were reduced. However, up-regulation of ATF3 protein expression partially reversed the effect of 3-MA on AngII-CFs. CONCLUSION ATF3 can regulate the proliferation of CFs and collagen production by affecting autophagy, thus affecting myocardial fibrosis remodeling after MI.
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Affiliation(s)
- Yiwei Huang
- Department of Cardiovascular Medicine, The Dingli Clinical College of Wenzhou Medical University, Laboratory of Wenzhou Pan Vascular Disease Management Center, 252 Bailidong Road, Lucheng District, Wenzhou 325000, Zhejiang Province, China
| | - Haiyue Dai
- Department of Cardiovascular Medicine, The Dingli Clinical College of Wenzhou Medical University, Laboratory of Wenzhou Pan Vascular Disease Management Center, 252 Bailidong Road, Lucheng District, Wenzhou 325000, Zhejiang Province, China.
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2
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Chen H, Luo S, Chen H, Zhang C. ATF3 regulates SPHK1 in cardiomyocyte injury via endoplasmic reticulum stress. Immun Inflamm Dis 2023; 11:e998. [PMID: 37773702 PMCID: PMC10540145 DOI: 10.1002/iid3.998] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/19/2023] [Accepted: 08/19/2023] [Indexed: 10/01/2023] Open
Abstract
AIM Endoplasmic reticulum (ER) stress is common in different human pathologies, including cardiac diseases. Sphingosine kinase-1 (SPHK1) represents an important player in cardiac growth and function. Nevertheless, its function in cardiomyocyte ER stress remains vague. This study sought to evaluate the mechanism through which SPHK1 might influence ER stress during myocardial infarction (MI). METHODS MI-related GEO data sets were queried to screen differentially expressed genes. Murine HL-1 cells exposed to oxygen-glucose deprivation (OGD) and mice with MI were induced, followed by gene expression manipulation using short hairpin RNAs and overexpression vectors. The activating transcription factor 3 (ATF3) and SPHK1 expression was examined in cells and tissues. Cell counting kit-8, TUNEL, DHE, HE, and Masson's staining were conducted in vitro and in vivo. The inflammatory factor concentrations in mouse serum were measured using ELISA. Finally, the transcriptional regulation of SPHK1 by ATF3 was validated. RESULTS ATF3 and SPHK1 were upregulated in vivo and in vitro. ATF3 downregulation reduced the SPHK1 transcription. ATF3 and SPHK1 downregulation increased the viability of OGD-treated HL-1 cells and decreased apoptosis, oxidative stress, and ER stress. ATF3 and SPHK1 downregulation narrowed the infarction area and attenuated myocardial fibrosis in mice, along with reduced inflammation in the serum and ER stress in the myocardium. In contrast, SPHK1 reduced the protective effect of ATF3 downregulation in vitro and in vivo. CONCLUSIONS ATF3 downregulation reduced SPHK1 expression to attenuate cardiomyocyte injury in MI.
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Affiliation(s)
- Huiling Chen
- Division of CardiologyThe First Affiliated Hospital of Chongqing Medical UniversityChongqingP.R. China
| | - Suxin Luo
- Division of CardiologyThe First Affiliated Hospital of Chongqing Medical UniversityChongqingP.R. China
| | - Huamei Chen
- Division of CardiologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingYunnanP.R. China
| | - Cong Zhang
- Department of EmergencyThe People's Hospital of ChuXiong YiZu Autonomous PrefectureChuxiongYunnanP.R. China
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3
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Awwad L, Aronheim A. Cardiac Dysfunction Promotes Cancer Progression via Multiple Secreted Factors. Cancer Res 2022; 82:1753-1761. [PMID: 35260887 PMCID: PMC9359722 DOI: 10.1158/0008-5472.can-21-2463] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 12/14/2021] [Accepted: 03/03/2022] [Indexed: 01/07/2023]
Abstract
Heart failure and cancer are the leading cause of deaths worldwide. While heart failure and cancer have been considered separate diseases, it is becoming evident that they are highly connected and affect each other's outcomes. Recent studies using experimental mouse models have suggested that heart failure promotes tumor progression. The mouse models used involve major irreversible surgery. Here, we induced heart hypertrophy via expression of activating transcription factor 3 (ATF3) in cardiomyocytes, followed by cancer cells' implantation. Tumors developing in ATF3-transgenic mice grew larger and displayed a more highly metastatic phenotype compared with tumors in wild-type mice. To address whether ATF3 expression or the cardiac outcome are necessary for tumor progression, ATF3 expression was turned off after cardiac hypertrophy development followed by cancer cell implantation. The tumor promotion phenotype and the enhancement of metastatic properties were preserved, suggesting that the failing heart per se is sufficient to promote tumor progression. Serum derived from ATF3-transgenic mice enhanced cancer cell proliferation and increased cancer cell metastatic properties in vitro. Using a cytokine array panel, multiple factors responsible for promoting tumor cell proliferation and the metastatic phenotype were identified. Interestingly, the failing heart and the tumor separately and simultaneously contributed to higher levels of these factors in the serum as well as other tissues and organs. These data suggest the existence of intimate cross-talk between the hypertrophied heart and the tumor that is mediated by secreted factors, leading to cancer promotion and disease deterioration. SIGNIFICANCE This work highlights the importance of early diagnosis and treatment of heart failure prior to reaching the irreversible stage that can exacerbate cancer progression.
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Affiliation(s)
| | - Ami Aronheim
- Corresponding Author: Ami Aronheim, Israel Institute of Technology, 7th Efron St. Bat-Galim, PO Box 9649, Haifa 31096, Israel. Phone: 972-4829-5454; Fax: 972-4829-5225; E-mail:
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4
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Pan J, Xu Z, Guo G, Xu C, Song Z, Li K, Zhong K, Wang D. Circ_nuclear factor I X (circNfix) attenuates pressure overload-induced cardiac hypertrophy via regulating miR-145-5p/ATF3 axis. Bioengineered 2021; 12:5373-5385. [PMID: 34468254 PMCID: PMC8806771 DOI: 10.1080/21655979.2021.1960462] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/14/2023] Open
Abstract
Cardiac hypertrophy can cause heart failure. However, the mechanisms underlying the progression of cardiac hypertrophy remain unclear. Emerging evidence suggests that circular RNAs (circRNAs) play a critical role in cardiac hypertrophy. However, the association between circ_nuclear factor I X (circNfix) and cardiac hypertrophy remain largely unknown. Therefore, the aim of the present study was to explore the role of circNfix in cardiac hypertrophy. In order to detect the function of circNfix in cardiac hypertrophy, cardiomyocytes were stimulated with angiotensin II (Ang II) to mimic the pathogenesis of the disease. In addition, pressure overload-induced cardiac hypertrophy in a mouse model was established using transverse aortic constriction (TAC) surgery. The mechanism via which circNfix regulated cardiac hypertrophy was investigated using RNA pull-down and luciferase reporter assays, and fluorescence in situ hybridization (FISH). circNfix was downregulated in Ang II-treated cardiomyocytes. Similarly, circNfix expression was markedly downregulated in mice following TAC surgery. In addition, circNfix overexpression significantly prevented the progression of cardiac hypertrophy in TAC-treated mice. Luciferase activity and RNA pull-down assays indicated that circNfix could indirectly target activating transcription factor 3 (ATF3) by binding with microRNA (miR)-145-5p in cardiomyocytes. miR-145-5p overexpression or ATF3 knockdown could reverse the effects of circNfix in Ang II-treated mouse cardiomyocytes. circNfix attenuated pressure overload-induced cardiac hypertrophy by regulating the miR-145-5p/ATF3 axis. Therefore, circNfix may serve as a molecular target for cardiac hypertrophy treatment.
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Affiliation(s)
- Jun Pan
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Zhenjun Xu
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Guanjun Guo
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Can Xu
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Zhizhao Song
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Kunsheng Li
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Kai Zhong
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Dongjin Wang
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
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Calcium Regulation on the Atrial Regional Difference of Collagen Production Activity in Atrial Fibrogenesis. Biomedicines 2021; 9:biomedicines9060686. [PMID: 34204537 PMCID: PMC8233809 DOI: 10.3390/biomedicines9060686] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 01/19/2023] Open
Abstract
Background: Atrial fibrosis plays an important role in the genesis of heart failure and atrial fibrillation. The left atrium (LA) exhibits a higher level of fibrosis than the right atrium (RA) in heart failure and atrial arrhythmia. However, the mechanism for the high fibrogenic potential of the LA fibroblasts remains unclear. Calcium (Ca2+) signaling contributes to the pro-fibrotic activities of fibroblasts. This study investigated whether differences in Ca2+ homeostasis contribute to differential fibrogenesis in LA and RA fibroblasts. Methods: Ca2+ imaging, a patch clamp assay and Western blotting were performed in isolated rat LA and RA fibroblasts. Results: The LA fibroblasts exhibited a higher Ca2+ entry and gadolinium-sensitive current compared with the RA fibroblasts. The LA fibroblasts exhibited greater pro-collagen type I, type III, phosphorylated Ca2+/calmodulin-dependent protein kinase II (CaMKII), phosphorylated phospholipase C (PLC), stromal interaction molecule 1 (STIM1) and transient receptor potential canonical (TRPC) 3 protein expression compared with RA fibroblasts. In the presence of 1 mmol/L ethylene glycol tetra-acetic acid (EGTA, Ca2+ chelator), the LA fibroblasts had similar pro-collagen type I, type III and phosphorylated CaMKII expression compared with RA fibroblasts. Moreover, in the presence of KN93 (a CaMKII inhibitor, 10 μmol/L), the LA fibroblasts had similar pro-collagen type I and type III compared with RA fibroblasts. Conclusion: The discrepancy of phosphorylated PLC signaling and gadolinium-sensitive Ca2+ channels in LA and RA fibroblasts induces different levels of Ca2+ influx, phosphorylated CaMKII expression and collagen production.
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6
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Tan Z, Wu L, Fang Y, Chen P, Wan R, Shen Y, Hu J, Jiang Z, Hong K. Systemic Bioinformatic Analyses of Nuclear-Encoded Mitochondrial Genes in Hypertrophic Cardiomyopathy. Front Genet 2021; 12:670787. [PMID: 34054926 PMCID: PMC8150003 DOI: 10.3389/fgene.2021.670787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/08/2021] [Indexed: 11/13/2022] Open
Abstract
Hypertrophic cardiomyopathy (HCM) is an autosomal dominant disease and mitochondria plays a key role in the progression in HCM. Here, we analyzed the expression pattern of nuclear-encoded mitochondrial genes (NMGenes) in HCM and found that the expression of NMGenes was significantly changed. A total of 316 differentially expressed NMGenes (DE-NMGenes) were identified. Pathway enrichment analyses showed that energy metabolism-related pathways such as "pyruvate metabolism" and "fatty acid degradation" were dysregulated, which highlighted the importance of energy metabolism in HCM. Next, we constructed a protein-protein interaction network based on 316 DE-NMGenes and identified thirteen hubs. Then, a total of 17 TFs (transcription factors) were predicted to potentially regulate the expression of 316 DE-NMGenes according to iRegulon, among which 8 TFs were already found involved in pathological hypertrophy. The remaining TFs (like GATA1, GATA5, and NFYA) were good candidates for further experimental verification. Finally, a mouse model of transverse aortic constriction (TAC) was established to validate the genes and results showed that DDIT4, TKT, CLIC1, DDOST, and SNCA were all upregulated in TAC mice. The present study represents the first effort to evaluate the global expression pattern of NMGenes in HCM and provides innovative insight into the molecular mechanism of HCM.
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Affiliation(s)
- Zhaochong Tan
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Limeng Wu
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yan Fang
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Pingshan Chen
- Department of Science and Technology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rong Wan
- Jiangxi Key Laboratory of Molecular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yang Shen
- Jiangxi Key Laboratory of Molecular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianping Hu
- Jiangxi Key Laboratory of Molecular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhenhong Jiang
- Jiangxi Key Laboratory of Molecular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kui Hong
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Key Laboratory of Molecular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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7
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JDP2, a Novel Molecular Key in Heart Failure and Atrial Fibrillation? Int J Mol Sci 2021; 22:ijms22084110. [PMID: 33923401 PMCID: PMC8074072 DOI: 10.3390/ijms22084110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/08/2021] [Accepted: 04/15/2021] [Indexed: 11/17/2022] Open
Abstract
Heart failure (HF) and atrial fibrillation (AF) are two major life-threatening diseases worldwide. Causes and mechanisms are incompletely understood, yet current therapies are unable to stop disease progression. In this review, we focus on the contribution of the transcriptional modulator, Jun dimerization protein 2 (JDP2), and on HF and AF development. In recent years, JDP2 has been identified as a potential prognostic marker for HF development after myocardial infarction. This close correlation to the disease development suggests that JDP2 may be involved in initiation and progression of HF as well as in cardiac dysfunction. Although no studies have been done in humans yet, studies on genetically modified mice impressively show involvement of JDP2 in HF and AF, making it an interesting therapeutic target.
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8
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Hamano M, Nomura S, Iida M, Komuro I, Yamanishi Y. Prediction of single-cell mechanisms for disease progression in hypertrophic remodelling by a trans-omics approach. Sci Rep 2021; 11:8112. [PMID: 33854108 PMCID: PMC8047020 DOI: 10.1038/s41598-021-86821-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 03/18/2021] [Indexed: 12/24/2022] Open
Abstract
Heart failure is a heterogeneous disease with multiple risk factors and various pathophysiological types, which makes it difficult to understand the molecular mechanisms involved. In this study, we proposed a trans-omics approach for predicting molecular pathological mechanisms of heart failure and identifying marker genes to distinguish heterogeneous phenotypes, by integrating multiple omics data including single-cell RNA-seq, ChIP-seq, and gene interactome data. We detected a significant increase in the expression level of natriuretic peptide A (Nppa), after stress loading with transverse aortic constriction (TAC), and showed that cardiomyocytes with high Nppa expression displayed specific gene expression patterns. Multiple NADH ubiquinone complex family, which are associated with the mitochondrial electron transport system, were negatively correlated with Nppa expression during the early stages of cardiac hypertrophy. Large-scale ChIP-seq data analysis showed that Nkx2-5 and Gtf2b were transcription factors characteristic of high-Nppa-expressing cardiomyocytes. Nppa expression levels may, therefore, represent a useful diagnostic marker for heart failure.
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Affiliation(s)
- Momoko Hamano
- Department of Bioscience and Bioinformatics, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka, 820-8502, Japan
| | - Seitaro Nomura
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.,Genome Science Division, Research Center for Advanced Science and Technologies, The University of Tokyo, Tokyo, 153-0041, Japan
| | - Midori Iida
- Department of Bioscience and Bioinformatics, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka, 820-8502, Japan
| | - Issei Komuro
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan
| | - Yoshihiro Yamanishi
- Department of Bioscience and Bioinformatics, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka, 820-8502, Japan.
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9
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Cheng CF, Ku HC, Shen TC. The potential of using itaconate as treatment for inflammation-related heart diseases. Tzu Chi Med J 2021; 34:113-118. [PMID: 35465278 PMCID: PMC9020236 DOI: 10.4103/tcmj.tcmj_83_21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/03/2021] [Accepted: 06/07/2021] [Indexed: 11/04/2022] Open
Abstract
Intracellular metabolites can cause critical changes in biological functions. Itaconate is perhaps the most fascinating substance in macrophages. Lipopolysaccharide can activate aconitate decarboxylase 1 and induces the generation of itaconate from the tricarboxylic acid cycle by decarboxylation of cis-aconitate. It has been reported that itaconate has beneficial effects on inflammation and oxidation. The mechanisms involved in these effects include the suppression of succinate dehydrogenase, the activation of nuclear factor E2-related factor 2 by alkylation of Kelch-like ECH-associated protein 1, suppression of aerobic glycolysis through regulation of glyceraldehyde-3-phosphate dehydrogenase and fructose-bisphosphate aldolase A, and suppression of IκBζ translation through activating transcription factor 3 activation. All of these findings elucidated the possible therapeutic implications of itaconate in inflammation-related diseases. In this review, we highlight that itaconate is a crucial molecule of the immunomodulatory response in macrophages and can regulate between immune response and cardiovascular metabolism. Furthermore, these discoveries suggest that itaconate is a very novel therapeutic molecule for the treatment of inflammation-related heart diseases.
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10
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Soraya AS, Tali H, Rona S, Tom F, Roy K, Ami A. ATF3 expression in cardiomyocytes and myofibroblasts following transverse aortic constriction displays distinct phenotypes. IJC HEART & VASCULATURE 2020; 32:100706. [PMID: 33437861 PMCID: PMC7786009 DOI: 10.1016/j.ijcha.2020.100706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/10/2020] [Accepted: 12/12/2020] [Indexed: 10/30/2022]
Abstract
Background Activating transcription 3 (ATF3) is a member of the basic leucine zipper family of transcription factors. ATF3 is an immediate early gene expressed following various cellular stresses. ATF3 acts through binding to cyclic AMP response elements found in the promoters of key regulatory proteins that determine cell fate. In the heart, multiple cardiac stresses result in chronic ATF3 expression. Transgenic mice with ATF3 expression in cardiomyocytes clearly demonstrate that ATF3 serves a leading role in heart hypertrophy, cardiac fibrosis, cardiac dysfunction and death. In contrast, the use of ATF3 whole body knockout mice resulted non-conclusive results. The heart is composed of various cell types such as cardiomyocytes, fibroblasts, endothelial and immune cells. The question that we addressed in this study is whether ablation of ATF3 in unique cell types in the heart results in diverse cardiac phenotypes. Methods ATF3-flox mice were crossed with αMHC and Postn specific promoters directing CRE expression and thus ATF3 ablation in cardiomyocytes and myofibroblast cells. Mice were challenged with transverse aortic constriction (TAC) for eight weeks and heart function, ventricle weight, hypertrophic markers, fibrosis markers and ATF3 expression were assessed by qRT-PCR. Results The results of the study show that ATF3 deletion in cardiomyocytes followed by TAC resulted in reduced heart growth and dampened fibrosis response while ATF3 ablation in myofibroblasts displayed a reduced hypertrophic gene program. Conclusions TAC-operation results in increased ATF3 expression in both myofibroblasts and cardiomyocytes that promotes a hypertrophic program and fibrotic cardiac growth, respectively.
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Affiliation(s)
- Abu-Sharki Soraya
- Department of Cell Biology and Cancer Science, The Ruth and Bruce Rappaport, Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Haas Tali
- The Pre-Clinical Research Authority Unit, Technion - Israel Institute of Technology, Haifa, Israel
| | - Shofti Rona
- The Pre-Clinical Research Authority Unit, Technion - Israel Institute of Technology, Haifa, Israel
| | - Friedman Tom
- Department of Cell Biology and Cancer Science, The Ruth and Bruce Rappaport, Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.,Department of Cardiac Surgery, Rambam Medical Center, Haifa, Israel
| | - Kalfon Roy
- Department of Cell Biology and Cancer Science, The Ruth and Bruce Rappaport, Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Aronheim Ami
- Department of Cell Biology and Cancer Science, The Ruth and Bruce Rappaport, Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
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11
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Choe N, Kwon DH, Ryu J, Shin S, Cho HJ, Joung H, Eom GH, Ahn Y, Park WJ, Nam KI, Kim YK, Kook H. miR-27a-3p Targets ATF3 to Reduce Calcium Deposition in Vascular Smooth Muscle Cells. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 22:627-639. [PMID: 33230462 PMCID: PMC7578555 DOI: 10.1016/j.omtn.2020.09.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 09/23/2020] [Indexed: 01/16/2023]
Abstract
Vascular calcification, the ectopic deposition of calcium in blood vessels, develops in association with various metabolic diseases and atherosclerosis and is an independent predictor of morbidity and mortality associated with these diseases. Herein, we report that reduction of microRNA-27a-3p (miR-27a-3p) causes an increase in activating transcription factor 3 (ATF3), a novel osteogenic transcription factor, in vascular smooth muscle cells. Both microRNA (miRNA) and mRNA microarrays were performed with rat vascular smooth muscle cells, and reciprocally regulated pairs of miRNA and mRNA were selected after bioinformatics analysis. Inorganic phosphate significantly reduced the expression of miR-27a-3p in A10 cells. The transcript level was also reduced in vitamin D3-administered mouse aortas. miR-27a-3p mimic reduced calcium deposition, whereas miR-27a-3p inhibitor increased it. The Atf3 mRNA level was upregulated in a cellular vascular calcification model, and miR-27a-3p reduced the Atf3 mRNA and protein levels. Transfection with Atf3 could recover the miR-27a-3p-induced reduction of calcium deposition. Our results suggest that reduction of miR-27a-3p may contribute to the development of vascular calcification by de-repression of ATF3.
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Affiliation(s)
- Nakwon Choe
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Duk-Hwa Kwon
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Juhee Ryu
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea.,Department of Biochemistry, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Sera Shin
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Hye Jung Cho
- Department of Anatomy, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Hosouk Joung
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Gwang Hyeon Eom
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Youngkeun Ahn
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Woo Jin Park
- College of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Kwang-Il Nam
- Department of Anatomy, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Young-Kook Kim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
| | - Hyun Kook
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Jeollanamdo, Republic of Korea
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12
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An HS, Lee JY, Choi EB, Jeong EA, Shin HJ, Kim KE, Park KA, Jin Z, Lee JE, Koh JS, Kwak W, Kim WH, Roh GS. Caloric restriction reverses left ventricular hypertrophy through the regulation of cardiac iron homeostasis in impaired leptin signaling mice. Sci Rep 2020; 10:7176. [PMID: 32346034 PMCID: PMC7188880 DOI: 10.1038/s41598-020-64201-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 04/13/2020] [Indexed: 12/18/2022] Open
Abstract
Leptin-deficient and leptin-resistant mice manifest obesity, insulin resistance, and left ventricular hypertrophy (LVH); however, LVH’s mechanisms are not fully understood. Cardiac iron dysregulation has been recently implicated in cardiomyopathy. Here we investigated the protective effects of caloric restriction on cardiac remodeling in impaired leptin signaling obese mice. RNA-seq analysis was performed to assess the differential gene expressions in the heart of wild-type and ob/ob mice. In particular, to investigate the roles of caloric restriction on iron homeostasis-related gene expressions, 10-week-old ob/ob and db/db mice were assigned to ad libitum or calorie-restricted diets for 12 weeks. Male ob/ob mice exhibited LVH, cardiac inflammation, and oxidative stress. Using RNA-seq analysis, we identified that an iron uptake-associated gene, transferrin receptor, was upregulated in obese ob/ob mice with LVH. Caloric restriction attenuated myocyte hypertrophy, cardiac inflammation, fibrosis, and oxidative stress in ob/ob and db/db mice. Furthermore, we found that caloric restriction reversed iron homeostasis-related lipocalin 2, divalent metal transporter 1, transferrin receptor, ferritin, ferroportin, and hepcidin expressions in the heart of ob/ob and db/db mice. These findings demonstrate that the cardioprotective effects of caloric restriction result from the cellular regulation of iron homeostasis, thereby decreasing oxidative stress, inflammation, and cardiac remodeling. We suggest that decreasing iron-mediated oxidative stress and inflammation offers new therapeutic approaches for obesity-induced cardiomyopathy.
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Affiliation(s)
- Hyeong Seok An
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Jong Youl Lee
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Eun Bee Choi
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Eun Ae Jeong
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Hyun Joo Shin
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Kyung Eun Kim
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Kyung-Ah Park
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Zhen Jin
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Jung Eun Lee
- Department of Thoracic and Cardiovascular Surgery, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Jin Sin Koh
- Division of Cardiology, Department of Internal Medicine, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Woori Kwak
- C&K genomics, Songpa-gu, Seoul, Republic of Korea
| | - Won-Ho Kim
- Division of Cardiovascular Diseases, Center for Biomedical Sciences, National Institute of Health, Cheongju, Chungbuk, Republic of Korea
| | - Gu Seob Roh
- Department of Anatomy and Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea. .,Bio Anti-aging Medical Research Center, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea.
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13
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Kalfon R, Friedman T, Eliachar S, Shofti R, Haas T, Koren L, Moskovitz JD, Hai T, Aronheim A. JDP2 and ATF3 deficiencies dampen maladaptive cardiac remodeling and preserve cardiac function. PLoS One 2019; 14:e0213081. [PMID: 30818334 PMCID: PMC6394944 DOI: 10.1371/journal.pone.0213081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/14/2019] [Indexed: 12/30/2022] Open
Abstract
c-Jun dimerization protein (JDP2) and Activating Transcription Factor 3 (ATF3) are closely related basic leucine zipper proteins. Transgenic mice with cardiac expression of either JDP2 or ATF3 showed maladaptive remodeling and cardiac dysfunction. Surprisingly, JDP2 knockout (KO) did not protect the heart following transverse aortic constriction (TAC). Instead, the JDP2 KO mice performed worse than their wild type (WT) counterparts. To test whether the maladaptive cardiac remodeling observed in the JDP2 KO mice is due to ATF3, ATF3 was removed in the context of JDP2 deficiency, referred as double KO mice (dKO). Mice were challenged by TAC, and followed by detailed physiological, pathological and molecular analyses. dKO mice displayed no apparent differences from WT mice under unstressed condition, except a moderate better performance in dKO male mice. Importantly, following TAC the dKO hearts showed low fibrosis levels, reduced inflammatory and hypertrophic gene expression and a significantly preserved cardiac function as compared with their WT counterparts in both genders. Consistent with these data, removing ATF3 resumed p38 activation in the JDP2 KO mice which correlates with the beneficial cardiac function. Collectively, mice with JDP2 and ATF3 double deficiency had reduced maladaptive cardiac remodeling and lower hypertrophy following TAC. As such, the worsening of the cardiac outcome found in the JDP2 KO mice is due to the elevated ATF3 expression. Simultaneous suppression of both ATF3 and JDP2 activity is highly beneficial for cardiac function in health and disease.
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Affiliation(s)
- Roy Kalfon
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Tom Friedman
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Cardiac Surgery Department, Rambam Health Care Campus, Haifa, Israel
| | - Shir Eliachar
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Rona Shofti
- The Pre-Clinical Research Authority Unit, The Technion, Israel Institute of Technology, Haifa, Israel
| | - Tali Haas
- The Pre-Clinical Research Authority Unit, The Technion, Israel Institute of Technology, Haifa, Israel
| | - Lilach Koren
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Jacob D. Moskovitz
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Tsonwin Hai
- Department of Biological Chemistry and Pharmacology, The Ohio State University, Columbus, Ohio United States of America
| | - Ami Aronheim
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- * E-mail:
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14
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Affiliation(s)
- Jennifer Davis
- From Departments of Pathology and Bioengineering, Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle.
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15
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Activating transcription factor 3 in cardiovascular diseases: a potential therapeutic target. Basic Res Cardiol 2018; 113:37. [PMID: 30094473 DOI: 10.1007/s00395-018-0698-6] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 08/06/2018] [Indexed: 12/12/2022]
Abstract
Cardiovascular diseases (CVDs) are the primary causes of death worldwide. Among the numerous signaling molecules involved in CVDs, transcriptional factors directly influence gene expression and play a critical role in regulating cell function and the development of diseases. Activating transcription factor (ATF) 3 is an adaptive-response gene in the ATF/cAMP responsive element-binding (CREB) protein family of transcription factors that acts as either a repressor or an activator of transcription via the formation of homodimers or heterodimers with other ATF/CREB members. A appropriate ATF3 expression is important for the normal physiology of cells, and dysfunction of ATF3 is associated with various pathophysiological responses such as inflammation, apoptosis, oxidative stress and endoplasmic reticulum stress, and diseases, including CVDs. This review focuses on the role of ATF3 in cardiac hypertrophy, heart failure, atherosclerosis, ischemic heart diseases, hypertension and diabetes mellitus to provide a novel therapeutic target for CVDs.
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16
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Heger J, Bornbaum J, Würfel A, Hill C, Brockmann N, Gáspár R, Pálóczi J, Varga ZV, Sárközy M, Bencsik P, Csont T, Török S, Kojonazarov B, Schermuly RT, Böngler K, Parahuleva M, Ferdinandy P, Schulz R, Euler G. JDP2 overexpression provokes cardiac dysfunction in mice. Sci Rep 2018; 8:7647. [PMID: 29769710 PMCID: PMC5955919 DOI: 10.1038/s41598-018-26052-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/03/2018] [Indexed: 01/19/2023] Open
Abstract
The transcriptional regulator JDP2 (Jun dimerization protein 2) has been identified as a prognostic marker for patients to develop heart failure after myocardial infarction. We now performed in vivo studies on JDP2-overexpressing mice, to clarify the impact of JDP2 on heart failure progression. Therefore, during birth up to the age of 4 weeks cardiac-specific JDP2 overexpression was prevented by doxycycline feeding in transgenic mice. Then, JDP2 overexpression was started. Already after 1 week, cardiac function, determined by echocardiography, decreased which was also resembled on the cardiomyocyte level. After 5 weeks blood pressure declined, ejection fraction and cardiac output was reduced and left ventricular dilatation developed. Heart weight/body weight, and mRNA expression of ANP, inflammatory marker genes, collagen and fibronectin increased. Collagen 1 protein expression increased, and fibrosis developed. As an additional sign of elevated extracellular matrix remodeling, matrix metalloproteinase 2 activity increased in JDP2 mice. Thus, JDP2 overexpression is deleterious to heart function in vivo. It can be concluded that JDP2 overexpression provokes cardiac dysfunction in adult mice that is accompanied by hypertrophy and fibrosis. Thus, induction of JDP2 is a maladaptive response contributing to heart failure development.
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Affiliation(s)
- Jacqueline Heger
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Julia Bornbaum
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Alona Würfel
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Christian Hill
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Nils Brockmann
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Renáta Gáspár
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - János Pálóczi
- Department of Biochemistry, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Zoltán V Varga
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - Márta Sárközy
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - Péter Bencsik
- Department of Biochemistry, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Tamás Csont
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - Szilvia Török
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - Baktybek Kojonazarov
- Universities of Giessen and Marburg Lung Center (UGMLC), Excellence Cluster Cardio-Pulmonary System (ECCPS), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Ralph Theo Schermuly
- Universities of Giessen and Marburg Lung Center (UGMLC), Excellence Cluster Cardio-Pulmonary System (ECCPS), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Kerstin Böngler
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Mariana Parahuleva
- Internal Medicine/Cardiology and Angiology, University Hospital of Giessen and Marburg, Location Marburg, Marburg, Germany
| | - Peter Ferdinandy
- Department of Biochemistry, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary.,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Rainer Schulz
- Institute of Physiology, Justus Liebig University, Giessen, Germany
| | - Gerhild Euler
- Institute of Physiology, Justus Liebig University, Giessen, Germany.
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17
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Bueno M, Brands J, Voltz L, Fiedler K, Mays B, St. Croix C, Sembrat J, Mallampalli RK, Rojas M, Mora AL. ATF3 represses PINK1 gene transcription in lung epithelial cells to control mitochondrial homeostasis. Aging Cell 2018; 17. [PMID: 29363258 PMCID: PMC5847866 DOI: 10.1111/acel.12720] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2017] [Indexed: 02/05/2023] Open
Abstract
PINK1 (PTEN‐induced putative kinase 1) is a key regulator of mitochondrial homeostasis that is relatively depleted in aging lungs and in lung epithelial cells from patients with idiopathic pulmonary fibrosis (IPF), a disease linked with aging. Impaired PINK1 expression and accumulation of damaged mitochondria in lung epithelial cells from fibrotic lungs were associated with the presence of ER stress. Here, we show that ATF3 (activating transcription factor 3), a member of the integrated stress response (ISR), negatively regulates transcription of the PINK1 gene. An ATF3 binding site within the human PINK1 promoter is located in the first 150 bp upstream of the transcription start site. Induction of ER stress or overexpression of ATF3 inhibited the activity of the PINK1 promoter. Importantly, overexpression of ATF3 causes accumulation of depolarized mitochondria, increased production of mitochondrial ROS, and loss of cell viability. Furthermore, conditional deletion of ATF3 in type II lung epithelial cells protects mice from bleomycin‐induced lung fibrosis. Finally, we observed that ATF3 expression increases in the lung with age and, specially, in lung epithelial cells from IPF lungs. These data provide a unique link between ATF3 and PINK1 expression suggesting that persistent stress, driven by ATF3, can dysregulate mitochondrial homeostasis by repression of PINK1 mRNA synthesis.
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Affiliation(s)
- Marta Bueno
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
- Division of Pulmonary Allergy and Critical Care Medicine; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Judith Brands
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
- Division of Pulmonary Allergy and Critical Care Medicine; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Lauren Voltz
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Kaitlin Fiedler
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Brenton Mays
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | | | - John Sembrat
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
- The Dorothy P. and Richard P. Simmons Center for Interstitial Lung Diseases; University of Pittsburgh; Pittsburgh PA USA
| | - Rama K. Mallampalli
- Division of Pulmonary Allergy and Critical Care Medicine; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
- Veterans Affairs Pittsburgh Healthcare System; Pittsburgh PA USA
| | - Mauricio Rojas
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
- The Dorothy P. and Richard P. Simmons Center for Interstitial Lung Diseases; University of Pittsburgh; Pittsburgh PA USA
| | - Ana L. Mora
- Vascular Medicine Institute; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
- Division of Pulmonary Allergy and Critical Care Medicine; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
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18
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Chung CC, Kao YH, Yao CJ, Lin YK, Chen YJ. A comparison of left and right atrial fibroblasts reveals different collagen production activity and stress-induced mitogen-activated protein kinase signalling in rats. Acta Physiol (Oxf) 2017; 220:432-445. [PMID: 27875022 DOI: 10.1111/apha.12835] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 11/11/2016] [Accepted: 11/15/2016] [Indexed: 12/22/2022]
Abstract
AIM Atrial fibrosis plays a pivotal role in the pathophysiology of heart failure (HF). The left atrium (LA) experiences greater fibrosis than the right atrium (RA) during HF. It is not clear whether LA cardiac fibroblasts contain distinctive activities that predispose LA to fibrosis. METHODS LA and RA fibrosis were evaluated in healthy and isoproterenol-induced HF Sprague Dawley rats. Rat LA and RA primary isolated fibroblasts were subjected to proliferation assay, oxidative stress assay, cell migration analysis, collagen measurement, cytokine array and Western blot. RESULTS Healthy rat LA and RA had a similar extent of collagen deposition. HF significantly increased fibrosis to a greater severity in LA than in RA. Compared to isolated RA fibroblasts, the in vitro experiments showed that isolated LA fibroblasts had higher oxidative stress and exhibited higher collagen, transforming growth factor-β1, connective tissue growth factor production and less vascular endothelial growth factor (VEGF) production, but had similar migration, myofibroblast differentiation and proliferation activities. VEGF significantly increased the collagen production ability of LA fibroblasts, but not RA fibroblasts. LA fibroblasts had more phosphorylated ERK1/2 and P38 expression. ERK inhibitor (PD98059, 50 μmol L-1 ) significantly attenuated collagen production and increased VEGF production in RA fibroblasts but not in LA fibroblasts. P38 inhibitor (SB203580, 30 μmol L-1 ) significantly attenuated collagen production in LA fibroblasts but not in RA fibroblasts. P38 inhibitor also significantly increased VEGF production in RA and LA fibroblasts. CONCLUSIONS Differences in profibrotic activity between LA and RA fibroblasts may be caused by different responses to mitogen-activated protein kinase signalling.
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Affiliation(s)
- C.-C. Chung
- Graduate Institute of Clinical Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
- Division of Cardiovascular Medicine; Department of Internal Medicine; Wan Fang Hospital; School of Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
| | - Y.-H. Kao
- Graduate Institute of Clinical Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
- Department of Medical Education and Research; Wan Fang Hospital; Taipei Medical University; Taipei Taiwan
| | - C.-J. Yao
- Cancer Center; Wan Fang Hospital; Taipei Medical University; Taipei Taiwan
- Department of Internal Medicine; School of Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
| | - Y.-K. Lin
- Division of Cardiovascular Medicine; Department of Internal Medicine; Wan Fang Hospital; School of Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
| | - Y.-J. Chen
- Graduate Institute of Clinical Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
- Division of Cardiovascular Medicine; Department of Internal Medicine; Wan Fang Hospital; School of Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
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19
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Li Y, Li Z, Zhang C, Li P, Wu Y, Wang C, Bond Lau W, Ma XL, Du J. Cardiac Fibroblast-Specific Activating Transcription Factor 3 Protects Against Heart Failure by Suppressing MAP2K3-p38 Signaling. Circulation 2017; 135:2041-2057. [PMID: 28249877 DOI: 10.1161/circulationaha.116.024599] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 02/21/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Hypertensive ventricular remodeling is a common cause of heart failure. However, the molecular mechanisms regulating ventricular remodeling remain poorly understood. METHODS We used a discovery-driven/nonbiased approach to identify increased activating transcription factor 3 (ATF3) expression in hypertensive heart. We used loss/gain of function approaches to understand the role of ATF3 in heart failure. We also examined the mechanisms through transcriptome, chromatin immunoprecipitation sequencing analysis, and in vivo and in vitro experiments. RESULTS ATF3 expression increased in murine hypertensive heart and human hypertrophic heart. Cardiac fibroblast cells are the primary cell type expressing high ATF3 levels in response to hypertensive stimuli. ATF3 knockout (ATF3KO) markedly exaggerated hypertensive ventricular remodeling, a state rescued by lentivirus-mediated/miRNA-aided cardiac fibroblast-selective ATF3 overexpression. Conversely, conditional cardiac fibroblast cell-specific ATF3 transgenic overexpression significantly ameliorated ventricular remodeling and heart failure. We identified Map2K3 as a novel ATF3 target. ATF3 binds with the Map2K3 promoter, recruiting HDAC1, resulting in Map2K3 gene-associated histone deacetylation, thereby inhibiting Map2K3 expression. Genetic Map2K3 knockdown rescued the profibrotic/hypertrophic phenotype in ATF3KO cells. Last, we demonstrated that p38 is the downstream molecule of Map2K3 mediating the profibrotic/hypertrophic effects in ATF3KO animals. Inhibition of p38 signaling reduced transforming growth factor-β signaling-related profibrotic and hypertrophic gene expression, and blocked exaggerated cardiac remodeling in ATF3KO cells. CONCLUSIONS Our study provides the first evidence that ATF3 upregulation in cardiac fibroblasts in response to hypertensive stimuli protects the heart by suppressing Map2K3 expression and subsequent p38-transforming growth factor-β signaling. These results suggest that positive modulation of cardiac fibroblast ATF3 may represent a novel therapeutic approach against hypertensive cardiac remodeling.
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Affiliation(s)
- Yulin Li
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Zhenya Li
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Congcong Zhang
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Ping Li
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Yina Wu
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Chunxiao Wang
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Wayne Bond Lau
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.)
| | - Xin-Liang Ma
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.).
| | - Jie Du
- From Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, China (Y.L., Z.L., C.Z., P.L., Y.W., C.W., J.D.); and Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA (W.B.L., X.-L.M.).
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20
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Zhu T, Qiao L, Wang Q, Mi R, Chen J, Lu Y, Gu J, Zheng Q. T-box family of transcription factor-TBX5, insights in development and disease. Am J Transl Res 2017; 9:442-453. [PMID: 28337273 PMCID: PMC5340680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 02/03/2017] [Indexed: 06/06/2023]
Abstract
The T-box gene family refers to a group of transcription factors that share a highly conserved, sequence-specific DNA-binding domain (T-box) containing around 180-amino acids. According to HUGO gene nomenclature committee (HGNC), there are 18 T-box family members. These T-box genes have been implicated essential roles during embryogenesis and cardiac development, given their specific expression pattern in developing mammalian heart for several T-box genes, including TBX5. TBX5 is consisted of three transcriptional variants which cover 9 exons and encode two distinct isoforms that differ in N-terminus. TBX5 is probably the most frequently studied T-box gene over the past decade due to the typical cardiac defects observed in Holt-Oram syndrome (HOS), which is caused by TBX5 mutation. Most of the mutations are within exons 3-7 where locate sequence coding for the T-box domain. Notably, a variety of cardiac defects, as well as abnormalities in limb and other organs have been seen in HOS syndrome with different kinds of TBX5 mutations, suggesting a heterogeneous disease mechanism. We have performed a meta-analysis of TBX5 and found a significant correlation between its single nucleotide polymorphism (SNP) rs3825214 (A to G), and risk of atrial fibrillation and its subtypes, supporting TBX5 as a master transcription factor for cardiac development. In addition, bioinformatics analysis of this SNP identified several TFs that may be affected for their binding affinity with TBX5. Identification and characterization of more TBX5 mutations and SNPs hold promise for therapeutic strategy targeting TBX5 associated developmental abnormalities and diseases.
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Affiliation(s)
- Ting Zhu
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Longwei Qiao
- The Center for Reproduction and Genetics, Suzhou Hospital Affiliated to Nanjing Medical UniversitySuzhou, Jiangsu 215008, China
| | - Qian Wang
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Rui Mi
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Jinnan Chen
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Yaojuan Lu
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Junxia Gu
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Qiping Zheng
- Department of Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
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21
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Kalfon R, Koren L, Aviram S, Schwartz O, Hai T, Aronheim A. ATF3 expression in cardiomyocytes preserves homeostasis in the heart and controls peripheral glucose tolerance. Cardiovasc Res 2016; 113:134-146. [DOI: 10.1093/cvr/cvw228] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 09/01/2016] [Accepted: 10/28/2016] [Indexed: 12/31/2022] Open
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22
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Jia Y, Chang HC, Schipma MJ, Liu J, Shete V, Liu N, Sato T, Thorp EB, Barger PM, Zhu YJ, Viswakarma N, Kanwar YS, Ardehali H, Thimmapaya B, Reddy JK. Cardiomyocyte-Specific Ablation of Med1 Subunit of the Mediator Complex Causes Lethal Dilated Cardiomyopathy in Mice. PLoS One 2016; 11:e0160755. [PMID: 27548259 PMCID: PMC4993490 DOI: 10.1371/journal.pone.0160755] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/25/2016] [Indexed: 11/19/2022] Open
Abstract
Mediator, an evolutionarily conserved multi-protein complex consisting of about 30 subunits, is a key component of the polymerase II mediated gene transcription. Germline deletion of the Mediator subunit 1 (Med1) of the Mediator in mice results in mid-gestational embryonic lethality with developmental impairment of multiple organs including heart. Here we show that cardiomyocyte-specific deletion of Med1 in mice (csMed1-/-) during late gestational and early postnatal development by intercrossing Med1fl/fl mice to α-MyHC-Cre transgenic mice results in lethality within 10 days after weaning due to dilated cardiomyopathy-related ventricular dilation and heart failure. The csMed1-/- mouse heart manifests mitochondrial damage, increased apoptosis and interstitial fibrosis. Global gene expression analysis revealed that loss of Med1 in heart down-regulates more than 200 genes including Acadm, Cacna1s, Atp2a2, Ryr2, Pde1c, Pln, PGC1α, and PGC1β that are critical for calcium signaling, cardiac muscle contraction, arrhythmogenic right ventricular cardiomyopathy, dilated cardiomyopathy and peroxisome proliferator-activated receptor regulated energy metabolism. Many genes essential for oxidative phosphorylation and proper mitochondrial function such as genes coding for the succinate dehydrogenase subunits of the mitochondrial complex II are also down-regulated in csMed1-/- heart contributing to myocardial injury. Data also showed up-regulation of about 180 genes including Tgfb2, Ace, Atf3, Ctgf, Angpt14, Col9a2, Wisp2, Nppa, Nppb, and Actn1 that are linked to cardiac muscle contraction, cardiac hypertrophy, cardiac fibrosis and myocardial injury. Furthermore, we demonstrate that cardiac specific deletion of Med1 in adult mice using tamoxifen-inducible Cre approach (TmcsMed1-/-), results in rapid development of cardiomyopathy and death within 4 weeks. We found that the key findings of the csMed1-/- studies described above are highly reproducible in TmcsMed1-/- mouse heart. Collectively, these observations suggest that Med1 plays a critical role in the maintenance of heart function impacting on multiple metabolic, compensatory and reparative pathways with a likely therapeutic potential in the management of heart failure.
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MESH Headings
- Animals
- Apoptosis
- Cadherins/genetics
- Cadherins/metabolism
- Calcium Channels, L-Type/genetics
- Calcium Channels, L-Type/metabolism
- Calcium Signaling
- Cardiomyopathy, Dilated/genetics
- Cardiomyopathy, Dilated/metabolism
- Cardiomyopathy, Dilated/pathology
- Cyclic Nucleotide Phosphodiesterases, Type 1/genetics
- Cyclic Nucleotide Phosphodiesterases, Type 1/metabolism
- Embryo, Mammalian
- Energy Metabolism
- Female
- Gene Deletion
- Gene Expression Profiling
- Gene Expression Regulation
- Genes, Lethal
- Gestational Age
- Heart Failure/genetics
- Heart Failure/metabolism
- Heart Failure/pathology
- Mediator Complex Subunit 1/deficiency
- Mediator Complex Subunit 1/genetics
- Mice
- Mice, Knockout
- Mitochondria/metabolism
- Mitochondria/pathology
- Myocardial Contraction
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Peroxisome Proliferator-Activated Receptors/genetics
- Peroxisome Proliferator-Activated Receptors/metabolism
- Pregnancy
- Ryanodine Receptor Calcium Release Channel/genetics
- Ryanodine Receptor Calcium Release Channel/metabolism
- Sarcoplasmic Reticulum Calcium-Transporting ATPases/genetics
- Sarcoplasmic Reticulum Calcium-Transporting ATPases/metabolism
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Affiliation(s)
- Yuzhi Jia
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Hsiang-Chun Chang
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Matthew J. Schipma
- Next Generation Sequencing Core Facility, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Jing Liu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Varsha Shete
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Ning Liu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Tatsuya Sato
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Edward B. Thorp
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Philip M. Barger
- Center for Cardiovascular Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Yi-Jun Zhu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Navin Viswakarma
- Department of Surgery, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Yashpal S. Kanwar
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Hossein Ardehali
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Bayar Thimmapaya
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- * E-mail: (JKR); (BT)
| | - Janardan K. Reddy
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- * E-mail: (JKR); (BT)
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23
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Zhou H, Yuan Y, Ni J, Guo H, Deng W, Bian ZY, Tang QZ. Pleiotropic and puzzling effects of ATF3 in maladaptive cardiac remodeling. Int J Cardiol 2016; 206:87-8. [PMID: 26780683 DOI: 10.1016/j.ijcard.2016.01.143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 01/06/2016] [Indexed: 10/22/2022]
Affiliation(s)
- Heng Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Yuan Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Jian Ni
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Haipeng Guo
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Wei Deng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Zhou-Yan Bian
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China.
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24
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Ma ZG, Wei WY, Xu SC, Zhang WB, Dai J, Tang QZ. ATF3: A potential target for cardiac maladaptive remodeling. Int J Cardiol 2016; 202:50-1. [DOI: 10.1016/j.ijcard.2015.08.179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 08/21/2015] [Indexed: 10/23/2022]
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25
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ATF3: A promotion effect or a inhibition effect in cardiac maladaptive remodeling. Int J Cardiol 2015; 201:245-6. [PMID: 26301647 DOI: 10.1016/j.ijcard.2015.08.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 08/06/2015] [Indexed: 11/22/2022]
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26
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Brooks AC, DeMartino AM, Brainard RE, Brittian KR, Bhatnagar A, Jones SP. Induction of activating transcription factor 3 limits survival following infarct-induced heart failure in mice. Am J Physiol Heart Circ Physiol 2015; 309:H1326-35. [PMID: 26342068 DOI: 10.1152/ajpheart.00513.2015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 08/07/2015] [Indexed: 01/24/2023]
Abstract
Numerous fibrotic and inflammatory changes occur in the failing heart. Recent evidence indicates that certain transcription factors, such as activating transcription factor 3 (ATF3), are activated during heart failure. Because ATF3 may be upregulated in the failing heart and affect inflammation, we focused on the potential role of ATF3 on postinfarct heart failure. We subjected anesthetized, wild-type mice to nonreperfused myocardial infarction and observed a significant induction in ATF3 expression and nuclear translocation. To test whether the induction of ATF3 affected the severity of heart failure, we subjected wild-type and ATF3-null mice to nonreperfused infarct-induced heart failure. There were no differences in cardiac function between the two genotypes, except at the 2-wk time point; however, ATF3-null mice survived the heart failure protocol at a significantly higher rate than the wild-type mice. Similar to the slight favorable improvements in chamber dimensions at 2 wk, we also observed greater cardiomyocyte hypertrophy and more fibrosis in the noninfarcted regions of the ATF3-null hearts compared with the wild-type. Nevertheless, there were no significant group differences at 4 wk. Furthermore, we found no significant differences in markers of inflammation between the wild-type and ATF3-null hearts. Our data suggest that ATF3 suppresses fibrosis early but not late during infarct-induced heart failure. Although ATF3 deficiency was associated with more fibrosis, this did not occur at the expense of survival, which was higher in the ATF3-null mice. Overall, ATF3 may serve a largely maladaptive role during heart failure.
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Affiliation(s)
- Alan C Brooks
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Angelica M DeMartino
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Robert E Brainard
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Kenneth R Brittian
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Aruni Bhatnagar
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Steven P Jones
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
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27
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Koren L, Alishekevitz D, Elhanani O, Nevelsky A, Hai T, Kehat I, Shaked Y, Aronheim A. ATF3-dependent cross-talk between cardiomyocytes and macrophages promotes cardiac maladaptive remodeling. Int J Cardiol 2015. [PMID: 26201690 DOI: 10.1016/j.ijcard.2015.06.099] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
RATIONALE Pressure overload induces adaptive remodeling processes in the heart. However, when pressure overload persists, adaptive changes turn into maladaptive alterations leading to cardiac hypertrophy and heart failure. ATF3 is a stress inducible transcription factor that is transiently expressed following neuroendocrine stimulation. However, its role in chronic pressure overload dependent cardiac hypertrophy is currently unknown. OBJECTIVE The objective of the study was to study the role of ATF3 in chronic pressure overload dependent cardiac remodeling processes. METHODS AND RESULTS Pressure overload was induced by phenylephrine (PE) mini-osmotic pumps in various mice models of whole body, cardiac specific, bone marrow (BM) specific and macrophage specific ATF3 ablations. We show that ATF3-KO mice exhibit a significantly reduced expression of cardiac remodeling markers following chronic pressure overload. Consistently, the lack of ATF3 specifically in either cardiomyocytes or BM derived cells blunts the hypertrophic response to PE infusion. A unique cross-talk between cardiomyocytes and macrophages was identified. Cardiomyocytes induce an ATF3 dependent induction of an inflammatory response leading to macrophage recruitment to the heart. Adoptive transfer of wild type macrophages, but not ATF3-KO derived macrophages, into wild type mice potentiates maladaptive response to PE infusion. CONCLUSIONS Collectively, this study places ATF3 as a key regulator in promoting pressure overload induced cardiac hypertrophy through a cross-talk between cardiomyocytes and macrophages. Inhibiting this cross-talk may serve as a useful approach to blunt maladaptive remodeling processes in the heart.
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Affiliation(s)
- L Koren
- Department of Molecular Genetics, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - D Alishekevitz
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - O Elhanani
- Department of Molecular Genetics, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - A Nevelsky
- Radiotherapy Department, Rambam Health Care Campus, Haifa, Israel
| | - T Hai
- Department of Biological Chemistry and Pharmacology, The Ohio State University, Columbus, Ohio USA
| | - I Kehat
- Department of Physiology, Biophysics and Systems Biology, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Y Shaked
- Department of Cell Biology and Cancer Science, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - A Aronheim
- Department of Molecular Genetics, The B. Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
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28
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Koivisto E, Jurado Acosta A, Moilanen AM, Tokola H, Aro J, Pennanen H, Säkkinen H, Kaikkonen L, Ruskoaho H, Rysä J. Characterization of the regulatory mechanisms of activating transcription factor 3 by hypertrophic stimuli in rat cardiomyocytes. PLoS One 2014; 9:e105168. [PMID: 25136830 PMCID: PMC4138181 DOI: 10.1371/journal.pone.0105168] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 07/18/2014] [Indexed: 01/08/2023] Open
Abstract
Aims Activating transcription factor 3 (ATF3) is a stress-activated immediate early gene suggested to have both detrimental and cardioprotective role in the heart. Here we studied the mechanisms of ATF3 activation by hypertrophic stimuli and ATF3 downstream targets in rat cardiomyocytes. Methods and Results When neonatal rat cardiomyocytes were exposed to endothelin-1 (ET-1, 100 nM) and mechanical stretching in vitro, maximal increase in ATF3 expression occurred at 1 hour. Inhibition of extracellular signal-regulated kinase (ERK) by PD98059 decreased ET-1– and stretch–induced increase of ATF3 protein but not ATF3 mRNA levels, whereas protein kinase A (PKA) inhibitor H89 attenuated both ATF3 mRNA transcription and protein expression in response to ET-1 and stretch. To characterize further the regulatory mechanisms upstream of ATF3, p38 mitogen-activated protein kinase (MAPK) signaling was investigated using a gain-of-function approach. Adenoviral overexpression of p38α, but not p38β, increased ATF3 mRNA and protein levels as well as DNA binding activity. To investigate the role of ATF3 in hypertrophic process, we overexpressed ATF3 by adenovirus-mediated gene transfer. In vitro, ATF3 gene delivery attenuated the mRNA transcription of interleukin-6 (IL-6) and plasminogen activator inhibitor-1 (PAI-1), and enhanced nuclear factor-κB (NF-κB) and Nkx-2.5 DNA binding activities. Reduced PAI-1 expression was also detected in vivo in adult rat heart by direct intramyocardial adenovirus-mediated ATF3 gene delivery. Conclusions These data demonstrate that ATF3 activation by ET-1 and mechanical stretch is partly mediated through ERK and cAMP-PKA pathways, whereas p38 MAPK pathway is involved in ATF3 activation exclusively through p38α isoform. ATF3 activation caused induction of modulators of the inflammatory response NF-κB and Nkx-2.5, as well as attenuation of pro-fibrotic and pro-inflammatory proteins IL-6 and PAI-1, suggesting cardioprotective role for ATF3 in the heart.
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Affiliation(s)
- Elina Koivisto
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
| | - Alicia Jurado Acosta
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
| | - Anne-Mari Moilanen
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
- Department of Pathology, Institute of Diagnostics, University of Oulu, Oulu, Finland
| | - Heikki Tokola
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
- Department of Pathology, Institute of Diagnostics, University of Oulu, Oulu, Finland
| | - Jani Aro
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
| | - Harri Pennanen
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
| | - Hanna Säkkinen
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
| | - Leena Kaikkonen
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
| | - Heikki Ruskoaho
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
- Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
- * E-mail:
| | - Jaana Rysä
- Department of Pharmacology and Toxicology, Institute of Biomedicine, University of Oulu, Oulu, Finland
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland
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29
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Zhou H, Guo H, Zong J, Dai J, Yuan Y, Bian ZY, Tang QZ. ATF3 regulates multiple targets and may play a dual role in cardiac hypertrophy and injury. Int J Cardiol 2014; 174:838-9. [PMID: 24794959 DOI: 10.1016/j.ijcard.2014.04.160] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 04/13/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Heng Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Haipeng Guo
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Jing Zong
- Department of Cardiology, The affiliated hospital of Xuzhou Medical College, Xuzhou 221000, China
| | - Jia Dai
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Yuan Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Zhou-Yan Bian
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, China.
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30
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Mishra S, Chatterjee S. Lactosylceramide promotes hypertrophy through ROS generation and activation of ERK1/2 in cardiomyocytes. Glycobiology 2014; 24:518-31. [PMID: 24658420 PMCID: PMC4001711 DOI: 10.1093/glycob/cwu020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Hypertrophy is central to several heart diseases; however, not much is known about the role of glycosphingolipids (GSLs) in this phenotype. Since GSLs have been accorded several physiological functions, we sought to determine whether these compounds affect cardiac hypertrophy. By using a rat cardiomyoblast cell line, H9c2 cells and cultured primary neonatal rat cardiomyocytes, we have determined the effects of GSLs on hypertrophy. Our study comprises (a) measurement of [(3)H]-leucine incorporation into protein, (b) measurement of cell size and morphology by immunofluorescence microscopy and (c) real-time quantitative mRNA expression assay for atrial natriuretic peptide and brain natriuretic peptide. Phenylephrine (PE), a well-established agonist of cardiac hypertrophy, served as a positive control in these studies. Subsequently, mechanistic studies were performed to explore the involvement of various signaling transduction pathways that may contribute to hypertrophy in these cardiomyocytes. We observed that lactosylceramide specifically exerted a concentration- (50-100 µM) and time (48 h)-dependent increase in hypertrophy in cardiomyocytes but not a library of other structurally related GSLs. Further, in cardiomyocytes, LacCer generated reactive oxygen species, stimulated the phosphorylation of p44 mitogen activated protein kinase and protein kinase-C, and enhanced c-jun and c-fos expression, ultimately leading to hypertrophy. In summary, we report here that LacCer specifically induces hypertrophy in cardiomyocytes via an "oxygen-sensitive signal transduction pathway."
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Affiliation(s)
- Sumita Mishra
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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31
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Nader GA, von Walden F, Liu C, Lindvall J, Gutmann L, Pistilli EE, Gordon PM. Resistance exercise training modulates acute gene expression during human skeletal muscle hypertrophy. J Appl Physiol (1985) 2014; 116:693-702. [DOI: 10.1152/japplphysiol.01366.2013] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We sought to determine whether acute resistance exercise (RE)-induced gene expression is modified by RE training. We studied the expression patterns of a select group of genes following an acute bout of RE in naïve and hypertrophying muscle. Thirteen untrained subjects underwent supervised RE training for 12 wk of the nondominant arm and performed an acute bout of RE 1 wk after the last bout of the training program ( training+acute). The dominant arm was either unexercised ( control) or subjected to the same acute exercise bout as the trained arm ( acute RE). Following training, men (14.8 ± 2.8%; P < 0.05) and women (12.6 ± 2.4%; P < 0.05) underwent muscle hypertrophy with increases in dynamic strength in the trained arm (48.2 ± 5.4% and 72.1 ± 9.1%, respectively; P < 0.01). RE training resulted in attenuated anabolic signaling as reflected by a reduction in rpS6 phosphorylation following acute RE. Changes in mRNA levels of genes involved in hypertrophic growth, protein degradation, angiogenesis, and metabolism commonly expressed in both men and women was determined 4 h following acute RE. We show that RE training can modify acute RE-induced gene expression in a divergent and gene-specific manner even in genes belonging to the same ontology. Changes in gene expression following acute RE are multidimensional, and may not necessarily reflect the actual adaptive response taking place during the training process. Thus RE training can selectively modify the acute response to RE, thereby challenging the use of gene expression as a marker of exercise-induced adaptations.
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Affiliation(s)
- G. A. Nader
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - F. von Walden
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - C. Liu
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - J. Lindvall
- Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
| | - L. Gutmann
- Department of Neurology, University of Iowa, Iowa City, Iowa
| | - E. E. Pistilli
- Byrd Health Science Center, West Virginia University, Morgantown, West Virginia; and
| | - P. M. Gordon
- School of Education, Health, Human Performance, and Recreation, Baylor University, Waco, Texas
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