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Zhang X, Wang Y, Li H, Wang DW, Chen C. Insights into the post-translational modifications in heart failure. Ageing Res Rev 2024; 100:102467. [PMID: 39187021 DOI: 10.1016/j.arr.2024.102467] [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: 10/25/2023] [Revised: 08/01/2024] [Accepted: 08/20/2024] [Indexed: 08/28/2024]
Abstract
Heart failure (HF), as the terminal manifestation of multiple cardiovascular diseases, causes a huge socioeconomic burden worldwide. Despite the advances in drugs and medical-assisted devices, the prognosis of HF remains poor. HF is well-accepted as a myriad of subcellular dys-synchrony related to detrimental structural and functional remodelling of cardiac components, including cardiomyocytes, fibroblasts, endothelial cells and macrophages. Through the covalent chemical process, post-translational modifications (PTMs) can coordinate protein functions, such as re-localizing cellular proteins, marking proteins for degradation, inducing interactions with other proteins and tuning enzyme activities, to participate in the progress of HF. Phosphorylation, acetylation, and ubiquitination predominate in the currently reported PTMs. In addition, advanced HF is commonly accompanied by metabolic remodelling including enhanced glycolysis. Thus, glycosylation induced by disturbed energy supply is also important. In this review, firstly, we addressed the main types of HF. Then, considering that PTMs are associated with subcellular locations, we summarized the leading regulation mechanisms in organelles of distinctive cell types of different types of HF, respectively. Subsequently, we outlined the aforementioned four PTMs of key proteins and signaling sites in HF. Finally, we discussed the perspectives of PTMs for potential therapeutic targets in HF.
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Affiliation(s)
- Xudong Zhang
- Division of Cardiology, Tongji Hospital, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, 1095# Jiefang Ave, Wuhan 430030, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Yan Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, 1095# Jiefang Ave, Wuhan 430030, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Huaping Li
- Division of Cardiology, Tongji Hospital, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, 1095# Jiefang Ave, Wuhan 430030, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Dao Wen Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, 1095# Jiefang Ave, Wuhan 430030, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China.
| | - Chen Chen
- Division of Cardiology, Tongji Hospital, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, 1095# Jiefang Ave, Wuhan 430030, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China.
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2
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Lou S, Zhu W, Yu T, Zhang Q, Wang M, Jin L, Xiong Y, Xu J, Wang Q, Chen G, Liang G, Hu X, Luo W. Compound SJ-12 attenuates streptozocin-induced diabetic cardiomyopathy by stabilizing SERCA2a. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167140. [PMID: 38548092 DOI: 10.1016/j.bbadis.2024.167140] [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: 10/04/2023] [Revised: 02/29/2024] [Accepted: 03/20/2024] [Indexed: 04/01/2024]
Abstract
Heart failure (HF) is one of the major causes of death among diabetic patients. Although studies have shown that curcumin analog C66 can remarkably relieve diabetes-associated cardiovascular and kidney complications, the role of SJ-12, SJ-12, a novel curcumin analog, in diabetic cardiomyopathy and its molecular targets are unknown. 7-week-old male C57BL/6 mice were intraperitoneally injected with single streptozotocin (STZ) (160 mg/kg) to develop diabetic cardiomyopathy (DCM). The diabetic mice were then treated with SJ-12 via gavage for two months. Body weight, fast blood glucose, cardiac utrasonography, myocardial injury markers, pathological morphology of the heart, hypertrophic and fibrotic markers were assessed. The potential target of SJ-12 was evaluated via RNA-sequencing analysis. The O-GlcNAcylation levels of SP1 were detected via immunoprecipitation. SJ-12 effectively suppressed myocardial hypertrophy and fibrosis, thereby preventing heart dysfunction in mice with STZ-induced heart failure. RNA-sequencing analysis revealed that SJ-12 exerted its therapeutic effects through the modulation of the calcium signaling pathway. Furthermore, SJ-12 reduced the O-GlcNAcylation levels of SP1 by inhibiting O-linked N-acetylglucosamine transferase (OGT). Also, SJ-12 stabilized Sarcoplasmic/Endoplasmic Reticulum Calcium ATPase 2a (SERCA2a), a crucial regulator of calcium homeostasis, thus reducing hypertrophy and fibrosis in mouse hearts and cultured cardiomyocytes. However, the anti-fibrotic effects of SJ-12 were not detected in SERCA2a or OGT-silenced cardiomyocytes, indicating that SJ-12 can prevent DCM by targeting OGT-dependent O-GlcNAcylation of SP1.These findings indicate that SJ-12 can exert cardioprotective effects in STZ-induced mice by reducing the O-GlcNAcylation levels of SP1, thus stabilizing SERCA2a and reducing myocardial fibrosis and hypertrophy. Therefore, SJ-12 can be used for the treatment of diabetic cardiomyopathy.
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Affiliation(s)
- Shuaijie Lou
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Weiwei Zhu
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China; Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Tianxiang Yu
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Qianhui Zhang
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Minxiu Wang
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Leiming Jin
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Yongqiang Xiong
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Jiachen Xu
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Qinyan Wang
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Gaozhi Chen
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China
| | - Guang Liang
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China; School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China.
| | - Xiang Hu
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China; Department of Endocrine and Metabolic Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
| | - Wu Luo
- Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China; Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
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3
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Márquez-Nogueras KM, Bovo E, Neczypor JE, Cao Q, Zima AV, Kuo IY. Utilization of the genetically encoded calcium indicator Salsa6F in cardiac applications. Cell Calcium 2024; 119:102873. [PMID: 38537433 PMCID: PMC11018326 DOI: 10.1016/j.ceca.2024.102873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/23/2024] [Accepted: 03/13/2024] [Indexed: 04/05/2024]
Abstract
Calcium signaling is a critical process required for cellular mechanisms such as cardiomyocyte contraction. The inability of the cell to properly activate or regulate calcium signaling can lead to contractile dysfunction. In isolated cardiomyocytes, calcium signaling has been primarily studied using calcium fluorescent dyes, however these dyes have limited applicability to whole organs. Here, we crossed the Salsa6f mouse which expresses a genetically encoded ratiometric cytosolic calcium indicator with a cardiomyocyte specific inducible cre to temporally-induce expression and studied cytosolic calcium transients in isolated cardiomyocytes and modified Langendorff heart preparations. Isolated cardiomyocytes expressing Salsa6f or Fluo-4AM loaded were compared. We also crossed the Salsa6f mouse with a floxed Polycystin 2 (PC2) mouse to test the feasibility of using the Salsa6f mouse to measure calcium transients in PC2 heterozygous or homozygous knock out mice. Although there are caveats in the applicability of the Salsa6f mouse, there are clear advantages to using the Salsa6f mouse to measure whole heart calcium signals.
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Affiliation(s)
- Karla M Márquez-Nogueras
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, IL, USA
| | - Elisa Bovo
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, IL, USA
| | - Jacy E Neczypor
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, IL, USA
| | - Quan Cao
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, IL, USA
| | - Aleksey V Zima
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, IL, USA
| | - Ivana Y Kuo
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, IL, USA.
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Falcón D, Calderón-Sánchez EM, Mayoral-González I, Martín-Bórnez M, Dominguez-Rodriguez A, Gutiérrez-Carretero E, Ordóñez-Fernández A, Rosado JA, Smani T. Inhibition of adenylyl cyclase 8 prevents the upregulation of Orai1 channel, which improves cardiac function after myocardial infarction. Mol Ther 2024; 32:646-662. [PMID: 38291755 PMCID: PMC10928147 DOI: 10.1016/j.ymthe.2024.01.026] [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: 08/24/2023] [Revised: 12/14/2023] [Accepted: 01/19/2024] [Indexed: 02/01/2024] Open
Abstract
The upregulation of Orai1 and subsequent store-operated Ca2+ entry (SOCE) has been associated with adverse cardiac remodeling and heart failure (HF). However, the mechanism underlying Orai1 upregulation and its role in myocardial infarction remains unclear. Our study investigated the role of Orai1 in activating adenylyl cyclase 8 (AC8) and cyclic AMP (cAMP) response element-binding protein (CREB), as well as its contribution to cardiac dysfunction induced by ischemia and reperfusion (I/R). We found that I/R evoked an increase in the expression of Orai1 and AC8 in rats' hearts, resulting in a substantial rise in diastolic Ca2+ concentration ([Ca2+]i), and reduced ventricular contractions. The expression of Orai1 and AC8 was also increased in ventricular biopsies of post-ischemic HF patients. Mechanistically, we demonstrate that I/R activation of Orai1 stimulated AC8, which produced cAMP and phosphorylated CREB. Subsequently, p-CREB activated the ORAI1 promoter, resulting in Orai1 upregulation and SOCE exacerbation. Intramyocardial administration of AAV9 carrying AC8 short hairpin RNA decreased the expression of AC8, Orai1 and CREB, which restored diastolic [Ca2+]i and improved cardiac contraction. Therefore, our data suggests that the axis composed by Orai1/AC8/CREB plays a critical role in I/R-induced cardiac dysfunction, representing a potential new therapeutic target to limit the progression of the disease toward HF.
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Affiliation(s)
- Débora Falcón
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain; Department of Medical Physiology and Biophysics, Faculty of Medicine, University of Seville, 41009 Seville, Spain.
| | - Eva M Calderón-Sánchez
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain; Department of Medical Physiology and Biophysics, Faculty of Medicine, University of Seville, 41009 Seville, Spain
| | - Isabel Mayoral-González
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain
| | - Marta Martín-Bórnez
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain; Department of Medical Physiology and Biophysics, Faculty of Medicine, University of Seville, 41009 Seville, Spain
| | - Alejandro Dominguez-Rodriguez
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain
| | - Encarnación Gutiérrez-Carretero
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain; Department of Surgery, Faculty of Medicine, University of Seville, 41009 Seville, Spain
| | - Antonio Ordóñez-Fernández
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain
| | - Juan Antonio Rosado
- Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain
| | - Tarik Smani
- Group of Cardiovascular Pathophysiology, Institute of Biomedicine of Seville, University Hospital of Virgen del Rocio/University of Seville/CSIC, 41013 Seville, Spain; Department of Medical Physiology and Biophysics, Faculty of Medicine, University of Seville, 41009 Seville, Spain.
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5
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Reisqs JB, Qu YS, Boutjdir M. Ion channel trafficking implications in heart failure. Front Cardiovasc Med 2024; 11:1351496. [PMID: 38420267 PMCID: PMC10899472 DOI: 10.3389/fcvm.2024.1351496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/25/2024] [Indexed: 03/02/2024] Open
Abstract
Heart failure (HF) is recognized as an epidemic in the contemporary world, impacting around 1%-2% of the adult population and affecting around 6 million Americans. HF remains a major cause of mortality, morbidity, and poor quality of life. Several therapies are used to treat HF and improve the survival of patients; however, despite these substantial improvements in treating HF, the incidence of HF is increasing rapidly, posing a significant burden to human health. The total cost of care for HF is USD 69.8 billion in 2023, warranting a better understanding of the mechanisms involved in HF. Among the most serious manifestations associated with HF is arrhythmia due to the electrophysiological changes within the cardiomyocyte. Among these electrophysiological changes, disruptions in sodium and potassium currents' function and trafficking, as well as calcium handling, all of which impact arrhythmia in HF. The mechanisms responsible for the trafficking, anchoring, organization, and recycling of ion channels at the plasma membrane seem to be significant contributors to ion channels dysfunction in HF. Variants, microtubule alterations, or disturbances of anchoring proteins lead to ion channel trafficking defects and the alteration of the cardiomyocyte's electrophysiology. Understanding the mechanisms of ion channels trafficking could provide new therapeutic approaches for the treatment of HF. This review provides an overview of the recent advances in ion channel trafficking in HF.
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Affiliation(s)
- Jean-Baptiste Reisqs
- Cardiovascular Research Program, VA New York Harbor Healthcare System, New York, NY, United States
| | - Yongxia Sarah Qu
- Cardiovascular Research Program, VA New York Harbor Healthcare System, New York, NY, United States
- Department of Cardiology, New York Presbyterian Brooklyn Methodist Hospital, New York, NY, United States
| | - Mohamed Boutjdir
- Cardiovascular Research Program, VA New York Harbor Healthcare System, New York, NY, United States
- Department of Medicine, Cell Biology and Pharmacology, State University of New York Downstate Health Sciences University, New York, NY, United States
- Department of Medicine, New York University Grossman School of Medicine, New York, NY, United States
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Poveda J, González-Lafuente L, Vázquez-Sánchez S, Mercado-García E, Rodríguez-Sánchez E, García-Consuegra I, Sanz AB, Segura J, Fernández-Velasco M, Liaño F, Ruilope LM, Ruiz-Hurtado G. Targeting the TWEAK-Fn14 pathway prevents dysfunction in cardiac calcium handling after acute kidney injury. J Pathol 2023; 261:427-441. [PMID: 37776271 DOI: 10.1002/path.6200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 07/07/2023] [Accepted: 08/11/2023] [Indexed: 10/02/2023]
Abstract
Heart and kidney have a closely interrelated pathophysiology. Acute kidney injury (AKI) is associated with significantly increased rates of cardiovascular events, a relationship defined as cardiorenal syndrome type 3 (CRS3). The underlying mechanisms that trigger heart disease remain, however, unknown, particularly concerning the clinical impact of AKI on cardiac outcomes and overall mortality. Tumour necrosis factor-like weak inducer of apoptosis (TWEAK) and its receptor fibroblast growth factor-inducible 14 (Fn14) are independently involved in the pathogenesis of both heart and kidney failure, and recent studies have proposed TWEAK as a possible therapeutic target; however, its specific role in cardiac damage associated with CRS3 remains to be clarified. Firstly, we demonstrated in a retrospective longitudinal clinical study that soluble TWEAK plasma levels were a predictive biomarker of mortality in patients with AKI. Furthermore, the exogenous application of TWEAK to native ventricular cardiomyocytes induced relevant calcium (Ca2+ ) handling alterations. Next, we investigated the role of the TWEAK-Fn14 axis in cardiomyocyte function following renal ischaemia-reperfusion (I/R) injury in mice. We observed that TWEAK-Fn14 signalling was activated in the hearts of AKI mice. Mice also showed significantly altered intra-cardiomyocyte Ca2+ handling and arrhythmogenic Ca2+ events through an impairment in sarcoplasmic reticulum Ca2+ -adenosine triphosphatase 2a pump (SERCA2a ) and ryanodine receptor (RyR2 ) function. Administration of anti-TWEAK antibody after reperfusion significantly improved alterations in Ca2+ cycling and arrhythmogenic events and prevented SERCA2a and RyR2 modifications. In conclusion, this study establishes the relevance of the TWEAK-Fn14 pathway in cardiac dysfunction linked to CRS3, both as a predictor of mortality in patients with AKI and as a Ca2+ mishandling inducer in cardiomyocytes, and highlights the cardioprotective benefits of TWEAK targeting in CRS3. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Jonay Poveda
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Laura González-Lafuente
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Sara Vázquez-Sánchez
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Elisa Mercado-García
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Elena Rodríguez-Sánchez
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Inés García-Consuegra
- Proteomics Unit, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Ana Belén Sanz
- Nephrology Laboratory, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid and REDINREN, Madrid, Spain
| | - Julián Segura
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
- Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - María Fernández-Velasco
- IdiPAZ Institute for Health Research/Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, CIBER-CV, Madrid, Spain
| | - Fernando Liaño
- Instituto Ramón y Cajal de Investigación Sanitaria (IRyCis), Madrid, Spain
| | - Luis M Ruilope
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
- CIBER-CV, Hospital Universitario 12 de Octubre, Madrid, Spain
- School of Doctoral Studies and Research, European University of Madrid, Madrid, Spain
| | - Gema Ruiz-Hurtado
- Cardiorenal Translational Laboratory, Institute of Research Imas12, Hospital Universitario 12 de Octubre, Madrid, Spain
- CIBER-CV, Hospital Universitario 12 de Octubre, Madrid, Spain
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
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Márquez-Nogueras KM, Bovo E, Cao Q, Zima AV, Kuo IY. Utilization of the genetically encoded calcium indicator Salsa6F in cardiac applications. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.22.568284. [PMID: 38045325 PMCID: PMC10690293 DOI: 10.1101/2023.11.22.568284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Calcium signaling is a critical process required for cellular mechanisms such as cardiac contractility. The inability of the cell to properly activate or regulate calcium signaling can lead to contractile dysfunction. In isolated cardiomyocytes, calcium signaling has been primarily studied using calcium fluorescent dyes, however these dyes have limited applicability to whole organs. Here, we crossed the Salsa6f mouse which expresses a genetically encoded ratiometric cytosolic calcium indicator with a cardiomyocyte specific inducible cre to temporally-induce expression and studied cytosolic calcium transients in isolated cardiomyocytes and modified Langendorff heart preparations. Isolated cardiomyocytes expressing Salsa6f or Fluo-4AM loaded were compared. We also crossed the Salsa6f mouse with a floxed Polycystin 2 (PC2) mouse to test the feasibility of using the Salsa6f mouse to measure calcium transients in PC2 heterozygous or homozygous knock out mice. Although there are caveats in the applicability of the Salsa6f mouse, there are clear advantages to using the Salsa6f mouse to measure whole heart calcium signals.
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Affiliation(s)
- Karla M. Márquez-Nogueras
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, Illinois, USA
| | - Elisa Bovo
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, Illinois, USA
| | - Quan Cao
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, Illinois, USA
| | - Aleksey V. Zima
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, Illinois, USA
| | - Ivana Y. Kuo
- Department of Cell and Molecular Physiology, and Cardiovascular Research Institute, Stritch School of Medicine, Loyola University Chicago, 2160 S. First Ave, Maywood, Illinois, USA
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Herting JR, König JH, Hadova K, Heinick A, Müller FU, Pauls P, Seidl MD, Soppa C, Kirchhefer U. Hypercontractile cardiac phenotype in mice overexpressing the regulatory subunit PR72 of protein phosphatase 2A. Front Cardiovasc Med 2023; 10:1239555. [PMID: 37868783 PMCID: PMC10590119 DOI: 10.3389/fcvm.2023.1239555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/22/2023] [Indexed: 10/24/2023] Open
Abstract
Background The activity, localization, and substrate specificity of the protein phosphatase 2A (PP2A) heterotrimer are controlled by various regulatory B subunits. PR72 belongs to the B'' gene family and has been shown to be upregulated in human heart failure. However, little is known about the functions of PR72 in the myocardium. Methods To address this issue, we generated a transgenic mouse model with heart-specific overexpression of PP2A-PR72. Biochemical and physiological methods were used to determine contractility, Ca2+ cycling parameters, and protein phosphorylation. Results A 2.5-fold increase in PR72 expression resulted in moderate cardiac hypertrophy. Maximal ventricular pressure was increased in catheterized transgenic mice (TG) compared to wild-type (WT) littermates. This was accompanied by an increased shortening of sarcomere length and faster relaxation at the single-cell level in TG. In parallel with these findings, the peak amplitude of Ca2+ transients was increased, and the decay in intracellular Ca2+ levels was shortened in TG compared to WT. The changes in Ca2+ cycling in TG were also evident from an increase in the full duration and width at half maximum of Ca2+ sparks. Consistent with the contractile data, phosphorylation of phospholamban at threonine-17 was higher in TG hearts. The lower expression of the Na+/Ca2+ exchanger may also contribute to the hypercontractile state in transgenic myocardium. Conclusion Our results suggest that PP2A-PR72 plays an important role in regulating cardiac contractile function and Ca2+ cycling, indicating that the upregulation of PR72 in heart failure is an attempt to compensate functionally.
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Affiliation(s)
- Julius R. Herting
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Jule H. König
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Katarina Hadova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Alexander Heinick
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Frank U. Müller
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Paul Pauls
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Matthias D. Seidl
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Carolina Soppa
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Uwe Kirchhefer
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
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Kong X, Sun H, Wei K, Meng L, Lv X, Liu C, Lin F, Gu X. WGCNA combined with machine learning algorithms for analyzing key genes and immune cell infiltration in heart failure due to ischemic cardiomyopathy. Front Cardiovasc Med 2023; 10:1058834. [PMID: 37008314 PMCID: PMC10064046 DOI: 10.3389/fcvm.2023.1058834] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 02/28/2023] [Indexed: 03/19/2023] Open
Abstract
BackgroundIschemic cardiomyopathy (ICM) induced heart failure (HF) is one of the most common causes of death worldwide. This study aimed to find candidate genes for ICM-HF and to identify relevant biomarkers by machine learning (ML).MethodsThe expression data of ICM-HF and normal samples were downloaded from Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) between ICM-HF and normal group were identified. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment and gene ontology (GO) annotation analysis, protein–protein interaction (PPI) network, gene pathway enrichment analysis (GSEA), and single-sample gene set enrichment analysis (ssGSEA) were performed. Weighted gene co-expression network analysis (WGCNA) was applied to screen for disease-associated modules, and relevant genes were derived using four ML algorithms. The diagnostic values of candidate genes were assessed using receiver operating characteristic (ROC) curves. The immune cell infiltration analysis was performed between the ICM-HF and normal group. Validation was performed using another gene set.ResultsA total of 313 DEGs were identified between ICM-HF and normal group of GSE57345, which were mainly enriched in biological processes and pathways related to cell cycle regulation, lipid metabolism pathways, immune response pathways, and intrinsic organelle damage regulation. GSEA results showed positive correlations with pathways such as cholesterol metabolism in the ICM-HF group compared to normal group and lipid metabolism in adipocytes. GSEA results also showed a positive correlation with pathways such as cholesterol metabolism and a negative correlation with pathways such as lipolytic presentation in adipocytes compared to normal group. Combining multiple ML and cytohubba algorithms yielded 11 relevant genes. After validation using the GSE42955 validation sets, the 7 genes obtained by the machine learning algorithm were well verified. The immune cell infiltration analysis showed significant differences in mast cells, plasma cells, naive B cells, and NK cells.ConclusionCombined analysis using WGCNA and ML identified coiled-coil-helix-coiled-coil-helix domain containing 4 (CHCHD4), transmembrane protein 53 (TMEM53), acid phosphatase 3 (ACPP), aminoadipate-semialdehyde dehydrogenase (AASDH), purinergic receptor P2Y1 (P2RY1), caspase 3 (CASP3) and aquaporin 7 (AQP7) as potential biomarkers of ICM-HF. ICM-HF may be closely related to pathways such as mitochondrial damage and disorders of lipid metabolism, while the infiltration of multiple immune cells was identified to play a critical role in the progression of the disease.
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Affiliation(s)
- XiangJin Kong
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - HouRong Sun
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - KaiMing Wei
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - LingWei Meng
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Xin Lv
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - ChuanZhen Liu
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - FuShun Lin
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - XingHua Gu
- Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan, China
- Correspondence: XingHua Gu
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Dai M, Hillmeister P. Exercise-mediated autophagy in cardiovascular diseases. Acta Physiol (Oxf) 2022; 236:e13890. [PMID: 36177522 DOI: 10.1111/apha.13890] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 09/27/2022] [Indexed: 01/29/2023]
Affiliation(s)
- Mengjun Dai
- Center for Internal Medicine 1, Department for Angiology, Faculty of Health Sciences (FGW), Deutsches Angiologie Zentrum (DAZB), Brandenburg Medical School (MHB) Theodor Fontane, University Clinic Brandenburg, Brandenburg/Havel, Germany.,Corporate member of Freie Universität Berlin, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp Hillmeister
- Center for Internal Medicine 1, Department for Angiology, Faculty of Health Sciences (FGW), Deutsches Angiologie Zentrum (DAZB), Brandenburg Medical School (MHB) Theodor Fontane, University Clinic Brandenburg, Brandenburg/Havel, Germany
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Reuter S. ExActa Mitochondria - more than just batteries for cellular function. Acta Physiol (Oxf) 2022; 235:e13852. [PMID: 35723182 DOI: 10.1111/apha.13852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 11/29/2022]
Abstract
Mitochondria are complex small organelles of eukaryotic cells and build the cellular source of energy. Several morphological features of mitochondria such as the double membrane and the circular DNA structure support the thesis that they originated from a prokaryotic eubacterial ancestor that has been taken up by the eukaryotic cell very early during the eukaryotic evolution. Since this "uptake-event" mitochondria were integrated into cellular processes and regulation which was realized by the transfer of mitochondrial genes into the host cell genome. 1 The mitochondrial genome reduced to for instance 13 encoded protein subunits of the oxidative phosphorylation system in human cells. Mitochondria offer energy for the cell by producing about 95% of cellular ATP.2 Nutrients, mainly pyruvate from the glycolysis enter the tricarboxylic acid cycle and undergo iterative oxidations whereas electrons are transferred to the reduction equivalents NADH and FADH2 . These redox equivalents transport electrons to the electron transport chain located on the inner mitochondrial membrane and protons are pumped into the perimembranal room. The F1 F0 -ATP synthase generates ATP driven by protons flowing down an electrochemical gradient during a process named oxidative phosphorylation. As a byproduct reactive oxygen species are generated. Mitochondria are more than simple batteries for the cell, they are furthermore involved in numerous vital cellular processes, among them are calcium homeostasis, cell death, fatty acid oxidation, reactive oxygen species (ROS) signaling, cholesterol synthesis and nucleotide synthesis, topics that are frequently published in Acta Physiologica.
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Persson PB, Persson AB. Scientific due diligence [in times of need for reliable information]. Acta Physiol (Oxf) 2022; 234:e13740. [PMID: 34793624 DOI: 10.1111/apha.13740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 11/17/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Pontus B. Persson
- Institute of Vegetative Physiology Charité – Universitätsmedizin Berlin Berlin Germany
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