1
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Risato G, Brañas Casas R, Cason M, Bueno Marinas M, Pinci S, De Gaspari M, Visentin S, Rizzo S, Thiene G, Basso C, Pilichou K, Tiso N, Celeghin R. In Vivo Approaches to Understand Arrhythmogenic Cardiomyopathy: Perspectives on Animal Models. Cells 2024; 13:1264. [PMID: 39120296 DOI: 10.3390/cells13151264] [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: 06/25/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 08/10/2024] Open
Abstract
Arrhythmogenic cardiomyopathy (AC) is a hereditary cardiac disorder characterized by the gradual replacement of cardiomyocytes with fibrous and adipose tissue, leading to ventricular wall thinning, chamber dilation, arrhythmias, and sudden cardiac death. Despite advances in treatment, disease management remains challenging. Animal models, particularly mice and zebrafish, have become invaluable tools for understanding AC's pathophysiology and testing potential therapies. Mice models, although useful for scientific research, cannot fully replicate the complexity of the human AC. However, they have provided valuable insights into gene involvement, signalling pathways, and disease progression. Zebrafish offer a promising alternative to mammalian models, despite the phylogenetic distance, due to their economic and genetic advantages. By combining animal models with in vitro studies, researchers can comprehensively understand AC, paving the way for more effective treatments and interventions for patients and improving their quality of life and prognosis.
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Affiliation(s)
- Giovanni Risato
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
- Department of Biology, University of Padua, I-35131 Padua, Italy
- Department of Women's and Children's Health, University of Padua, I-35128 Padua, Italy
| | | | - Marco Cason
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Maria Bueno Marinas
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Serena Pinci
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Monica De Gaspari
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Silvia Visentin
- Department of Women's and Children's Health, University of Padua, I-35128 Padua, Italy
| | - Stefania Rizzo
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Gaetano Thiene
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Cristina Basso
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Kalliopi Pilichou
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
| | - Natascia Tiso
- Department of Biology, University of Padua, I-35131 Padua, Italy
| | - Rudy Celeghin
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, I-35128 Padua, Italy
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2
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Vencato S, Romanato C, Rampazzo A, Calore M. Animal Models and Molecular Pathogenesis of Arrhythmogenic Cardiomyopathy Associated with Pathogenic Variants in Intercalated Disc Genes. Int J Mol Sci 2024; 25:6208. [PMID: 38892395 PMCID: PMC11172742 DOI: 10.3390/ijms25116208] [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: 04/22/2024] [Revised: 05/28/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a rare genetic cardiac disease characterized by the progressive substitution of myocardium with fibro-fatty tissue. Clinically, ACM shows wide variability among patients; symptoms can include syncope and ventricular tachycardia but also sudden death, with the latter often being its sole manifestation. Approximately half of ACM patients have been found with variations in one or more genes encoding cardiac intercalated discs proteins; the most involved genes are plakophilin 2 (PKP2), desmoglein 2 (DSG2), and desmoplakin (DSP). Cardiac intercalated discs provide mechanical and electro-metabolic coupling among cardiomyocytes. Mechanical communication is guaranteed by the interaction of proteins of desmosomes and adheren junctions in the so-called area composita, whereas electro-metabolic coupling between adjacent cardiac cells depends on gap junctions. Although ACM has been first described almost thirty years ago, the pathogenic mechanism(s) leading to its development are still only partially known. Several studies with different animal models point to the involvement of the Wnt/β-catenin signaling in combination with the Hippo pathway. Here, we present an overview about the existing murine models of ACM harboring variants in intercalated disc components with a particular focus on the underlying pathogenic mechanisms. Prospectively, mechanistic insights into the disease pathogenesis will lead to the development of effective targeted therapies for ACM.
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Affiliation(s)
- Sara Vencato
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (S.V.); (C.R.); (A.R.)
| | - Chiara Romanato
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (S.V.); (C.R.); (A.R.)
| | - Alessandra Rampazzo
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (S.V.); (C.R.); (A.R.)
| | - Martina Calore
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (S.V.); (C.R.); (A.R.)
- Department of Molecular Genetics, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6211 LK Maastricht, The Netherlands
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Gibb J, Wall E, Fields E, Seale A, Armstrong C, Bamber A, Daubeney P, Jacobs-Pearson M, Marton T, Stals K, Low K, Kaski JP, Spentzou G. Biallelic PKP2 loss of function variants are associated with a lethal perinatal-onset biventricular dilated cardiomyopathy with excessive trabeculations and ventricular septal defects. J Med Genet 2024; 61:405-409. [PMID: 38050058 DOI: 10.1136/jmg-2023-109493] [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: 07/01/2023] [Accepted: 11/12/2023] [Indexed: 12/06/2023]
Abstract
Homozygous plakophilin-2 (PKP2) variants have been identified as a cause of a lethal form of dilated cardiomyopathy with excessive trabeculations (DCM-ET) in three cases. We report three more cases from two families with homozygous pathogenic PKP2 variants and perinatal-onset, lethal DCM-ET. Identification of the genetic abnormalities played a key role in decision-making and family counselling in these cases. This case series supports the published evidence that biallelic loss of function PKP2 variants cause a lethal, perinatal-onset cardiomyopathy.
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Affiliation(s)
- Jack Gibb
- Department of Paediatric Cardiology, Bristol Royal Hospital for Children, Bristol, Bristol, UK
| | - Elizabeth Wall
- Department of Clinical Genetics, Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Ella Fields
- Centre for Paediatric Inherited and Rare Cardiovascular Disease, University College London, London, UK
- Centre for Inherited Cardiovascular Diseases, Great Ormond Street Hospital for Children, London, UK
| | - Anna Seale
- Department of Paediatric Cardiology, Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Catherine Armstrong
- Department of Paediatric Cardiology, Bristol Royal Hospital for Children, Bristol, Bristol, UK
| | - Andrew Bamber
- Department of Cellular Pathology, Southmead Hospital, Bristol, City of Bristol, UK
| | - Piers Daubeney
- Department of Paediatric Cardiology, Royal Brompton and Harefield Hospitals, London, UK
- Guy's and St Thomas' Hospitals NHS Trust, London, UK
| | - Makaela Jacobs-Pearson
- Department of Clinical Genetics, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | - Tamas Marton
- Department of Obstetrics and Gynecology, Semmelweis University Faculty of Medicine, Budapest, Hungary
- Department of Cellular pathology, Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Karen Stals
- Department of Molecular Genetics, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - Karen Low
- Department of Clinical Genetics, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
- Department of Academic Child Health, University of Bristol, Bristol, UK
| | - Juan Pablo Kaski
- Centre for Paediatric Inherited and Rare Cardiovascular Disease, University College London, London, UK
- Centre for Inherited Cardiovascular Diseases, Great Ormond Street Hospital for Children, London, UK
| | - Georgia Spentzou
- Department of Paediatric Cardiology, Bristol Royal Hospital for Children, Bristol, Bristol, UK
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Simmons DW, Malayath G, Schuftan DR, Guo J, Oguntuyo K, Ramahdita G, Sun Y, Jordan SD, Munsell MK, Kandalaft B, Pear M, Rentschler SL, Huebsch N. Engineered tissue geometry and Plakophilin-2 regulate electrophysiology of human iPSC-derived cardiomyocytes. APL Bioeng 2024; 8:016118. [PMID: 38476404 PMCID: PMC10932571 DOI: 10.1063/5.0160677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 02/06/2024] [Indexed: 03/14/2024] Open
Abstract
Engineered heart tissues have been created to study cardiac biology and disease in a setting that more closely mimics in vivo heart muscle than 2D monolayer culture. Previously published studies suggest that geometrically anisotropic micro-environments are crucial for inducing "in vivo like" physiology from immature cardiomyocytes. We hypothesized that the degree of cardiomyocyte alignment and prestress within engineered tissues is regulated by tissue geometry and, subsequently, drives electrophysiological development. Thus, we studied the effects of tissue geometry on electrophysiology of micro-heart muscle arrays (μHM) engineered from human induced pluripotent stem cells (iPSCs). Elongated tissue geometries elicited cardiomyocyte shape and electrophysiology changes led to adaptations that yielded increased calcium intake during each contraction cycle. Strikingly, pharmacologic studies revealed that a threshold of prestress and/or cellular alignment is required for sodium channel function, whereas L-type calcium and rapidly rectifying potassium channels were largely insensitive to these changes. Concurrently, tissue elongation upregulated sodium channel (NaV1.5) and gap junction (Connexin 43, Cx43) protein expression. Based on these observations, we leveraged elongated μHM to study the impact of loss-of-function mutation in Plakophilin 2 (PKP2), a desmosome protein implicated in arrhythmogenic disease. Within μHM, PKP2 knockout cardiomyocytes had cellular morphology similar to what was observed in isogenic controls. However, PKP2-/- tissues exhibited lower conduction velocity and no functional sodium current. PKP2 knockout μHM exhibited geometrically linked upregulation of sodium channel but not Cx43, suggesting that post-translational mechanisms, including a lack of ion channel-gap junction communication, may underlie the lower conduction velocity observed in tissues harboring this genetic defect. Altogether, these observations demonstrate that simple, scalable micro-tissue systems can provide the physiologic stresses necessary to induce electrical remodeling of iPS-CM to enable studies on the electrophysiologic consequences of disease-associated genomic variants.
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Affiliation(s)
- Daniel W. Simmons
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Ganesh Malayath
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - David R. Schuftan
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Jingxuan Guo
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Kasoorelope Oguntuyo
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Ghiska Ramahdita
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Yuwen Sun
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Samuel D. Jordan
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - Mary K. Munsell
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Brennan Kandalaft
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Missy Pear
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
| | - Stacey L. Rentschler
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri 63110, USA
| | - Nathaniel Huebsch
- Department of Biomedical Engineering, Washington University in St. Louis McKelvey School of Engineering, St. Louis, Missouri 63130, USA
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Orgil BO, Purevjav E. Molecular Pathways and Animal Models of Cardiomyopathies. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1441:991-1019. [PMID: 38884766 DOI: 10.1007/978-3-031-44087-8_64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Cardiomyopathies are a heterogeneous group of disorders of the heart muscle that ultimately result in congestive heart failure. Rapid progress in genetics, molecular and cellular biology with breakthrough innovative genetic-engineering techniques, such as next-generation sequencing and multiomics platforms, stem cell reprogramming, as well as novel groundbreaking gene-editing systems over the past 25 years has greatly improved the understanding of pathogenic signaling pathways in inherited cardiomyopathies. This chapter will focus on intracellular and intercellular molecular signaling pathways that are activated by a genetic insult in cardiomyocytes to maintain tissue and organ level regulation and resultant cardiac remodeling in certain forms of cardiomyopathies. In addition, animal models of different clinical forms of human cardiomyopathies with their summaries of triggered key molecules and signaling pathways will be described.
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Affiliation(s)
- Buyan-Ochir Orgil
- Department of Pediatrics, The Heart Institute, Division of Cardiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Enkhsaikhan Purevjav
- Department of Pediatrics, The Heart Institute, Division of Cardiology, University of Tennessee Health Science Center, Memphis, TN, USA.
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Stevens TL, Coles S, Sturm AC, Hoover CA, Borzok MA, Mohler PJ, El Refaey M. Molecular Pathways and Animal Models of Arrhythmias. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1441:1057-1090. [PMID: 38884769 DOI: 10.1007/978-3-031-44087-8_67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Arrhythmias account for over 300,000 annual deaths in the United States, and approximately half of all deaths are associated with heart disease. Mechanisms underlying arrhythmia risk are complex; however, work in humans and animal models over the past 25 years has identified a host of molecular pathways linked with both arrhythmia substrates and triggers. This chapter will focus on select arrhythmia pathways solved by linking human clinical and genetic data with animal models.
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Affiliation(s)
- Tyler L Stevens
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Sara Coles
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Amy C Sturm
- Genomic Medicine Institute, 23andMe, Sunnyvale, CA, USA
| | - Catherine A Hoover
- Department of Biochemistry, Chemistry, Engineering and Physics, Commonwealth University of Pennsylvania, Mansfield, PA, USA
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Maegen A Borzok
- Department of Biochemistry, Chemistry, Engineering and Physics, Commonwealth University of Pennsylvania, Mansfield, PA, USA
| | - Peter J Mohler
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Internal Medicine, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Mona El Refaey
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
- Department of Surgery, Division of Cardiac Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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Fan X, Yang G, Duru F, Grilli M, Akin I, Zhou X, Saguner AM, Ei-Battrawy I. Arrhythmogenic Cardiomyopathy: from Preclinical Models to Genotype-phenotype Correlation and Pathophysiology. Stem Cell Rev Rep 2023; 19:2683-2708. [PMID: 37731079 PMCID: PMC10661732 DOI: 10.1007/s12015-023-10615-0] [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] [Accepted: 08/23/2023] [Indexed: 09/22/2023]
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a hereditary myocardial disease characterized by the replacement of the ventricular myocardium with fibrous fatty deposits. ACM is usually inherited in an autosomal dominant pattern with variable penetrance and expressivity, which is mainly related to ventricular tachyarrhythmia and sudden cardiac death (SCD). Importantly, significant progress has been made in determining the genetic background of ACM due to the development of new techniques for genetic analysis. The exact molecular pathomechanism of ACM, however, is not completely clear and the genotype-phenotype correlations have not been fully elucidated, which are useful to predict the prognosis and treatment of ACM patients. Different gene-targeted and transgenic animal models, human-induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) models, and heterologous expression systems have been developed. Here, this review aims to summarize preclinical ACM models and platforms promoting our understanding of the pathogenesis of ACM and assess their value in elucidating the ACM genotype-phenotype relationship.
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Affiliation(s)
- Xuehui Fan
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention of Cardiovascular Diseases, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China
- Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
- European Center for AngioScience (ECAS), German Center for Cardiovascular Research (DZHK) Partner Site Heidelberg/ Mannheim, and Centre for Cardiovascular Acute Medicine Mannheim (ZKAM), Medical Centre Mannheim, Heidelberg University, Partner Site, Heidelberg-Mannheim, Germany
| | - Guoqiang Yang
- Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
- Department of Acupuncture and Rehabilitation, the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- Research Unit of Molecular Imaging Probes, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Firat Duru
- Department of Cardiology, University Heart Centre, University Hospital Zurich, Zurich, Switzerland
| | - Maurizio Grilli
- Faculty of Medicine, University Medical Centre Mannheim (UMM), University of Heidelberg, Mannheim, Germany
| | - Ibrahim Akin
- Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
- European Center for AngioScience (ECAS), German Center for Cardiovascular Research (DZHK) Partner Site Heidelberg/ Mannheim, and Centre for Cardiovascular Acute Medicine Mannheim (ZKAM), Medical Centre Mannheim, Heidelberg University, Partner Site, Heidelberg-Mannheim, Germany
| | - Xiaobo Zhou
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention of Cardiovascular Diseases, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China.
- Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany.
- European Center for AngioScience (ECAS), German Center for Cardiovascular Research (DZHK) Partner Site Heidelberg/ Mannheim, and Centre for Cardiovascular Acute Medicine Mannheim (ZKAM), Medical Centre Mannheim, Heidelberg University, Partner Site, Heidelberg-Mannheim, Germany.
- First Department of Medicine, University Medical Centre Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany.
| | - Ardan Muammer Saguner
- Department of Cardiology, University Heart Centre, University Hospital Zurich, Zurich, Switzerland
| | - Ibrahim Ei-Battrawy
- European Center for AngioScience (ECAS), German Center for Cardiovascular Research (DZHK) Partner Site Heidelberg/ Mannheim, and Centre for Cardiovascular Acute Medicine Mannheim (ZKAM), Medical Centre Mannheim, Heidelberg University, Partner Site, Heidelberg-Mannheim, Germany.
- Department of Cardiology and Angiology, Ruhr University, Bochum, Germany; Institute of Physiology, Department of Cellular and Translational Physiology and Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr- University Bochum, Bochum, Germany.
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Amin G, Castañeda SL, Zabalegui F, Belli C, Atorrasagasti C, Miriuka SG, Moro LN. Generation of two edited iPSCs lines by CRISPR/Cas9 with point mutations in PKP2 gene for arrhythmogenic cardiomyopathy in vitro modeling. Stem Cell Res 2023; 71:103157. [PMID: 37393721 DOI: 10.1016/j.scr.2023.103157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/19/2023] [Accepted: 06/23/2023] [Indexed: 07/04/2023] Open
Abstract
The arrhythmogenic cardiomyopathy (ACM) is an inherited heart muscle disease characterized by the progressive replacement of contractile myocardium by fibro-fatty adipose tissue, that generates ventricular arrhythmias and sudden death in patients. The ACM has a genetic origin with alterations in desmosomal genes with the most commonly mutated being the PKP2 gene. We generated two CRISPR/Cas9 edited iPSCs lines, one iPSC line with a point mutation in PKP2 reported in patients with ACM and another iPSC line with a premature stop codon to knock-out the same gene.
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Affiliation(s)
- Guadalupe Amin
- Instituto de Neurociencias (INEU-CONICET), Laboratorio de Investigación Aplicada en Neurociencias (LIAN), Fundación para la Lucha contra las Enfermedades Neurológicas de la Infancia (FLENI), Escobar, Provincia de Buenos Aires, Argentina
| | - Sheila Lucía Castañeda
- Instituto de Neurociencias (INEU-CONICET), Laboratorio de Investigación Aplicada en Neurociencias (LIAN), Fundación para la Lucha contra las Enfermedades Neurológicas de la Infancia (FLENI), Escobar, Provincia de Buenos Aires, Argentina
| | - Federico Zabalegui
- Instituto de Neurociencias (INEU-CONICET), Laboratorio de Investigación Aplicada en Neurociencias (LIAN), Fundación para la Lucha contra las Enfermedades Neurológicas de la Infancia (FLENI), Escobar, Provincia de Buenos Aires, Argentina
| | - Carolina Belli
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Catalina Atorrasagasti
- Instituto de Investigaciones en Medicina Traslacional (IIMT-CONICET), Universidad Austral, Pilar, Argentina
| | - Santiago Gabriel Miriuka
- Instituto de Neurociencias (INEU-CONICET), Laboratorio de Investigación Aplicada en Neurociencias (LIAN), Fundación para la Lucha contra las Enfermedades Neurológicas de la Infancia (FLENI), Escobar, Provincia de Buenos Aires, Argentina
| | - Lucía Natalia Moro
- Instituto de Neurociencias (INEU-CONICET), Laboratorio de Investigación Aplicada en Neurociencias (LIAN), Fundación para la Lucha contra las Enfermedades Neurológicas de la Infancia (FLENI), Escobar, Provincia de Buenos Aires, Argentina
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Moazzen H, Bolaji MD, Leube RE. Desmosomes in Cell Fate Determination: From Cardiogenesis to Cardiomyopathy. Cells 2023; 12:2122. [PMID: 37681854 PMCID: PMC10487268 DOI: 10.3390/cells12172122] [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: 07/18/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 09/09/2023] Open
Abstract
Desmosomes play a vital role in providing structural integrity to tissues that experience significant mechanical tension, including the heart. Deficiencies in desmosomal proteins lead to the development of arrhythmogenic cardiomyopathy (AC). The limited availability of preventative measures in clinical settings underscores the pressing need to gain a comprehensive understanding of desmosomal proteins not only in cardiomyocytes but also in non-myocyte residents of the heart, as they actively contribute to the progression of cardiomyopathy. This review focuses specifically on the impact of desmosome deficiency on epi- and endocardial cells. We highlight the intricate cross-talk between desmosomal proteins mutations and signaling pathways involved in the regulation of epicardial cell fate transition. We further emphasize that the consequences of desmosome deficiency differ between the embryonic and adult heart leading to enhanced erythropoiesis during heart development and enhanced fibrogenesis in the mature heart. We suggest that triggering epi-/endocardial cells and fibroblasts that are in different "states" involve the same pathways but lead to different pathological outcomes. Understanding the details of the different responses must be considered when developing interventions and therapeutic strategies.
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Affiliation(s)
- Hoda Moazzen
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany; (M.D.B.); (R.E.L.)
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10
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Lluch A, Latorre J, Serena-Maione A, Espadas I, Caballano-Infantes E, Moreno-Navarrete JM, Oliveras-Cañellas N, Ricart W, Malagón MM, Martin-Montalvo A, Birchmeier W, Szymanski W, Graumann J, Gómez-Serrano M, Sommariva E, Fernández-Real JM, Ortega FJ. Impaired Plakophilin-2 in obesity breaks cell cycle dynamics to breed adipocyte senescence. Nat Commun 2023; 14:5106. [PMID: 37607954 PMCID: PMC10444784 DOI: 10.1038/s41467-023-40596-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 08/03/2023] [Indexed: 08/24/2023] Open
Abstract
Plakophilin-2 (PKP2) is a key component of desmosomes, which, when defective, is known to promote the fibro-fatty infiltration of heart muscle. Less attention has been given to its role in adipose tissue. We report here that levels of PKP2 steadily increase during fat cell differentiation, and are compromised if adipocytes are exposed to a pro-inflammatory milieu. Accordingly, expression of PKP2 in subcutaneous adipose tissue diminishes in patients with obesity, and normalizes upon mild-to-intense weight loss. We further show defective PKP2 in adipocytes to break cell cycle dynamics and yield premature senescence, a key rheostat for stress-induced adipose tissue dysfunction. Conversely, restoring PKP2 in inflamed adipocytes rewires E2F signaling towards the re-activation of cell cycle and decreased senescence. Our findings connect the expression of PKP2 in fat cells to the physiopathology of obesity, as well as uncover a previously unknown defect in cell cycle and adipocyte senescence due to impaired PKP2.
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Affiliation(s)
- Aina Lluch
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Jessica Latorre
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Angela Serena-Maione
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Isabel Espadas
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), University Pablo de Olavide, Seville, Spain
| | - Estefanía Caballano-Infantes
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - José M Moreno-Navarrete
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Núria Oliveras-Cañellas
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Wifredo Ricart
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - María M Malagón
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Cell Biology, Physiology and Immunology, Instituto Maimonides de Investigación Biomédica de Cordoba (IMIBIC), University of Cordoba, Reina Sofia University Hospital, Cordoba, Spain
| | - Alejandro Martin-Montalvo
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), University Pablo de Olavide, Seville, Spain
| | | | - Witold Szymanski
- Institute of Translational Proteomics, Biochemical/Pharmacological Centre, Philipps University, Marburg, Germany
| | - Johannes Graumann
- Institute of Translational Proteomics, Biochemical/Pharmacological Centre, Philipps University, Marburg, Germany
| | - María Gómez-Serrano
- Institute for Tumor Immunology, Center for Tumor Biology and Immunology, Philipps University, Marburg, Germany
| | - Elena Sommariva
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - José M Fernández-Real
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Medical Sciences, School of Medicine, University of Girona, Girona, Spain
| | - Francisco J Ortega
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain.
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
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11
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Liang FX, Sall J, Petzold C, van Opbergen CJM, Liang X, Delmar M. Nanogold based protein localization enables subcellular visualization of cell junction protein by SBF-SEM. Methods Cell Biol 2023; 177:55-81. [PMID: 37451776 PMCID: PMC10612668 DOI: 10.1016/bs.mcb.2022.12.020] [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] [Indexed: 07/18/2023]
Abstract
Recent advances in volume electron microscopy (vEM) allow unprecedented visualization of the electron-dense structures of cells, tissues and model organisms at nanometric resolution in three dimensions (3D). Light-based microscopy has been widely used for specific localization of proteins; however, it is restricted by the diffraction limit of light, and lacks the ability to identify underlying structures. Here, we describe a protocol for ultrastructural detection, in three dimensions, of a protein (Connexin 43) expressed in the intercalated disc region of adult murine heart. Our protocol does not rest on the expression of genetically encoded proteins and it overcomes hurdles related to pre-embedding and immunolabeling, such as the penetration of the label and the preservation of the tissue. The pre-embedding volumetric immuno-electron microscopy (pre-embedding vIEM) protocol presented here combines several practical strategies to balance sample fixation with antigen and ultrastructural preservation, and penetration of labeling with blocking of non-specific antigen binding sites. The small 1.4 nm gold along with surrounded silver used as a detection marker buried in the sample also serves as a functional conductive resin that significantly reduces the charging of samples. Our protocol also presents strategies for facilitating the successful cutting of the samples during serial block-face scanning electron microscopy (SBF-SEM) imaging. Our results suggest that the small gold-based pre-embedding vIEM is an ideal labeling method for molecular localization throughout the depth of the sample at subcellular compartments and membrane microdomains.
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Affiliation(s)
- Feng-Xia Liang
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States; Department of Cell Biology, New York University Grossman School of Medicine, New York, NY, United States.
| | - Joseph Sall
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
| | - Chris Petzold
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
| | - Chantal J M van Opbergen
- Leon H Charney Division of Cardiology, Department of Medicine, New York University Grossman School of Medicine, New York, NY, United States
| | - Xiangxi Liang
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
| | - Mario Delmar
- Leon H Charney Division of Cardiology, Department of Medicine, New York University Grossman School of Medicine, New York, NY, United States
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12
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Tsui H, van Kampen SJ, Han SJ, Meraviglia V, van Ham WB, Casini S, van der Kraak P, Vink A, Yin X, Mayr M, Bossu A, Marchal GA, Monshouwer-Kloots J, Eding J, Versteeg D, de Ruiter H, Bezstarosti K, Groeneweg J, Klaasen SJ, van Laake LW, Demmers JAA, Kops GJPL, Mummery CL, van Veen TAB, Remme CA, Bellin M, van Rooij E. Desmosomal protein degradation as an underlying cause of arrhythmogenic cardiomyopathy. Sci Transl Med 2023; 15:eadd4248. [PMID: 36947592 DOI: 10.1126/scitranslmed.add4248] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 03/01/2023] [Indexed: 03/24/2023]
Abstract
Arrhythmogenic cardiomyopathy (ACM) is an inherited progressive cardiac disease. Many patients with ACM harbor mutations in desmosomal genes, predominantly in plakophilin-2 (PKP2). Although the genetic basis of ACM is well characterized, the underlying disease-driving mechanisms remain unresolved. Explanted hearts from patients with ACM had less PKP2 compared with healthy hearts, which correlated with reduced expression of desmosomal and adherens junction (AJ) proteins. These proteins were also disorganized in areas of fibrotic remodeling. In vitro data from human-induced pluripotent stem cell-derived cardiomyocytes and microtissues carrying the heterozygous PKP2 c.2013delC pathogenic mutation also displayed impaired contractility. Knockin mice carrying the equivalent heterozygous Pkp2 c.1755delA mutation recapitulated changes in desmosomal and AJ proteins and displayed cardiac dysfunction and fibrosis with age. Global proteomics analysis of 4-month-old heterozygous Pkp2 c.1755delA hearts indicated involvement of the ubiquitin-proteasome system (UPS) in ACM pathogenesis. Inhibition of the UPS in mutant mice increased area composita proteins and improved calcium dynamics in isolated cardiomyocytes. Additional proteomics analyses identified lysine ubiquitination sites on the desmosomal proteins, which were more ubiquitinated in mutant mice. In summary, we show that a plakophilin-2 mutation can lead to decreased desmosomal and AJ protein expression through a UPS-dependent mechanism, which preceded cardiac remodeling. These findings suggest that targeting protein degradation and improving desmosomal protein stability may be a potential therapeutic strategy for the treatment of ACM.
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Affiliation(s)
- Hoyee Tsui
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Sebastiaan Johannes van Kampen
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Su Ji Han
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Viviana Meraviglia
- Department of Anatomy and Embryology, University Medical Center, Leiden, 2333 ZA, Netherlands
| | - Willem B van Ham
- Department of Medical Physiology, University Medical Center Utrecht, 3584 CM, Netherlands
| | - Simona Casini
- Department of Clinical and Experimental Cardiology, University Medical Center Amsterdam, 1105 AZ, Netherlands
| | - Petra van der Kraak
- Department of Pathology, University Medical Center Utrecht, 3584 CX, Netherlands
| | - Aryan Vink
- Department of Pathology, University Medical Center Utrecht, 3584 CX, Netherlands
| | - Xiaoke Yin
- James Black Centre, King's College, University of London, WC2R 2LS London, UK
| | - Manuel Mayr
- James Black Centre, King's College, University of London, WC2R 2LS London, UK
| | - Alexandre Bossu
- Department of Medical Physiology, University Medical Center Utrecht, 3584 CM, Netherlands
| | - Gerard A Marchal
- Department of Clinical and Experimental Cardiology, University Medical Center Amsterdam, 1105 AZ, Netherlands
| | - Jantine Monshouwer-Kloots
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Joep Eding
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Danielle Versteeg
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Hesther de Ruiter
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Karel Bezstarosti
- Proteomics Center, Erasmus Medical Center Rotterdam, 3015 CN, Netherlands
| | - Judith Groeneweg
- Department of Cardiology, University Medical Center Utrecht, 3584 CX, Netherlands
| | - Sjoerd J Klaasen
- Oncode Institute, Hubrecht Institute, Royal Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Linda W van Laake
- Department of Cardiology, University Medical Center Utrecht, 3584 CX, Netherlands
| | - Jeroen A A Demmers
- Proteomics Center, Erasmus Medical Center Rotterdam, 3015 CN, Netherlands
| | - Geert J P L Kops
- Oncode Institute, Hubrecht Institute, Royal Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
| | - Christine L Mummery
- Department of Anatomy and Embryology, University Medical Center, Leiden, 2333 ZA, Netherlands
| | - Toon A B van Veen
- Department of Medical Physiology, University Medical Center Utrecht, 3584 CM, Netherlands
| | - Carol Ann Remme
- Department of Clinical and Experimental Cardiology, University Medical Center Amsterdam, 1105 AZ, Netherlands
| | - Milena Bellin
- Department of Anatomy and Embryology, University Medical Center, Leiden, 2333 ZA, Netherlands
| | - Eva van Rooij
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584 CT, Netherlands
- Department of Cardiology, University Medical Center Utrecht, 3584 CX, Netherlands
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13
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Xu M, Bermea KC, Ayati M, Kim HB, Yang X, Medina A, Fu Z, Heravi A, Zhang X, Na CH, Everett AD, Gabrielson K, Foster DB, Paolocci N, Murphy AM, Ramirez-Correa GA. Alteration in tyrosine phosphorylation of cardiac proteome and EGFR pathway contribute to hypertrophic cardiomyopathy. Commun Biol 2022; 5:1251. [PMID: 36380187 PMCID: PMC9666710 DOI: 10.1038/s42003-022-04021-4] [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: 11/09/2020] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Alterations of serine/threonine phosphorylation of the cardiac proteome are a hallmark of heart failure. However, the contribution of tyrosine phosphorylation (pTyr) to the pathogenesis of cardiac hypertrophy remains unclear. We use global mapping to discover and quantify site-specific pTyr in two cardiac hypertrophic mouse models, i.e., cardiac overexpression of ErbB2 (TgErbB2) and α myosin heavy chain R403Q (R403Q-αMyHC Tg), compared to control hearts. From this, there are significant phosphoproteomic alterations in TgErbB2 mice in right ventricular cardiomyopathy, hypertrophic cardiomyopathy (HCM), and dilated cardiomyopathy (DCM) pathways. On the other hand, R403Q-αMyHC Tg mice indicated that the EGFR1 pathway is central for cardiac hypertrophy, along with angiopoietin, ErbB, growth hormone, and chemokine signaling pathways activation. Surprisingly, most myofilament proteins have downregulation of pTyr rather than upregulation. Kinase-substrate enrichment analysis (KSEA) shows a marked downregulation of MAPK pathway activity downstream of k-Ras in TgErbB2 mice and activation of EGFR, focal adhesion, PDGFR, and actin cytoskeleton pathways. In vivo ErbB2 inhibition by AG-825 decreases cardiomyocyte disarray. Serine/threonine and tyrosine phosphoproteome confirm the above-described pathways and the effectiveness of AG-825 Treatment. Thus, altered pTyr may play a regulatory role in cardiac hypertrophic models.
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Affiliation(s)
- Mingguo Xu
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA ,Department of Pediatrics, The Third People’s Hospital of Longgang District, Shenzhen, 518115 China
| | - Kevin C. Bermea
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Marzieh Ayati
- grid.449717.80000 0004 5374 269XDeparment of Computer Science/College of Engineering and Computer Science, University of Texas Rio Grande Valley School of Medicine, Edinburgh, Texas USA
| | - Han Byeol Kim
- grid.21107.350000 0001 2171 9311Department of Neurology/Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Xiaomei Yang
- grid.27255.370000 0004 1761 1174Department of Anesthesiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji’nan, China
| | - Andres Medina
- Department of Molecular Science/UT Health Rio Grande Valley, McAllen, TX USA
| | - Zongming Fu
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Amir Heravi
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Xinyu Zhang
- grid.27255.370000 0004 1761 1174Department of Cardiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji’nan, China
| | - Chan Hyun Na
- grid.21107.350000 0001 2171 9311Department of Neurology/Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD USA ,grid.21107.350000 0001 2171 9311Department of Biological Chemistry/McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Allen D. Everett
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Kathleen Gabrielson
- grid.21107.350000 0001 2171 9311Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - D. Brian Foster
- grid.21107.350000 0001 2171 9311Department of Medicine/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Nazareno Paolocci
- grid.21107.350000 0001 2171 9311Department of Medicine/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA ,grid.5608.b0000 0004 1757 3470Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Anne M. Murphy
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Genaro A. Ramirez-Correa
- grid.21107.350000 0001 2171 9311Department of Pediatrics/Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD USA ,Department of Molecular Science/UT Health Rio Grande Valley, McAllen, TX USA
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14
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van Opbergen CJM, Sall J, Petzold C, Dancel-Manning K, Delmar M, Liang FX. "Orphan" Connexin43 in Plakophilin-2 Deficient Hearts Revealed by Volume Electron Microscopy. Front Cell Dev Biol 2022; 10:843687. [PMID: 35663385 PMCID: PMC9159532 DOI: 10.3389/fcell.2022.843687] [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: 12/26/2021] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Previous studies revealed an abundance of functional Connexin43 (Cx43) hemichannels consequent to loss of plakophilin-2 (PKP2) expression in adult murine hearts. The increased Cx43-mediated membrane permeability is likely responsible for excess entry of calcium into the cells, leading to an arrhythmogenic/cardiomyopathic phenotype. The latter has translational implications to the molecular mechanisms of inheritable arrhythmogenic right ventricular cardiomyopathy (ARVC). Despite functional evidence, visualization of these "orphan" (i.e., non-paired in a gap junction configuration) Cx43 hemichannels remains lacking. Immuno-electron microscopy (IEM) remains an extremely powerful tool to localize, with nanometric resolution, a protein within its native structural landscape. Yet, challenges for IEM are to preserve the antigenicity of the molecular target and to provide access for antibodies to reach their target, while maintaining the cellular/tissue ultrastructure. Fixation is important for maintaining cell structure, but strong fixation and vigorous dehydration (as it is routine for EM) can alter protein structure, thus impairing antigen-antibody binding. Here, we implemented a method to combine pre-embedding immunolabeling (pre-embedding) with serial block-face scanning electron microscopy (SBF-SEM). We utilized a murine model of cardiomyocyte-specific, Tamoxifen (TAM) activated knockout of PKP2. Adult hearts were harvested 14 days post-TAM, at this time hearts present a phenotype of concealed ARVC (i.e., an arrhythmogenic phenotype but no overt structural disease). Thick (200 µm) vibratome slices were immunolabelled for Cx43 and treated with nanogold or FluoroNanogold, coupled with a silver enhancement. Left or right ventricular free walls were dissected and three-dimensional (3D) localization of Cx43 in cardiac muscle was performed using SBF-SEM. Reconstructed images allowed us to visualize the entire length of gap junction plaques, seen as two parallel, closely packed strings of Cx43-immunoreactive beads at the intercalated disc. In contrast, in PKP2-deficient hearts we observed bulging of the intercellular space, and entire areas where only one of the two strings could be observed, indicating the presence of orphan Cx43. We conclude that pre-embedding and SBF-SEM allowed visualization of cardiac Cx43 plaques in their native environment, providing for the first time a visual complement of functional data indicating the presence of orphan Cx43 hemichannels resulting from loss of desmosomal integrity in the heart.
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Affiliation(s)
- Chantal J M van Opbergen
- The Leon H. Charney Division of Cardiology, New York University Grossman School of Medicine, New York, NY, United States
| | - Joseph Sall
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
| | - Chris Petzold
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
| | - Kristen Dancel-Manning
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
| | - Mario Delmar
- The Leon H. Charney Division of Cardiology, New York University Grossman School of Medicine, New York, NY, United States
| | - Feng-Xia Liang
- Microscopy Laboratory, Division of Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY, United States
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15
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Camors EM, Roth AH, Alef JR, Sullivan RD, Johnson JN, Purevjav E, Towbin JA. Progressive Reduction in Right Ventricular Contractile Function Due to Altered Actin Expression in an Aging Mouse Model of Arrhythmogenic Cardiomyopathy. Circulation 2022; 145:1609-1624. [PMID: 35437032 DOI: 10.1161/circulationaha.120.049261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Arrhythmogenic cardiomyopathy (ACM) is an inherited genetic disorder of desmosomal dysfunction, and plakophilin-2 (PKP2) has been reported to be the most common disease-causing gene when mutation-positive. In the early "concealed" phase, the ACM heart is at high risk of sudden cardiac death before cardiac remodeling occurs due to mistargeted ion channels and altered Ca2+ handling. However, the results of pathogenic PKP2 variants on myocyte contraction in ACM pathogenesis remain unknown. METHODS We studied the outcomes of a human truncating variant of PKP2 on myocyte contraction using a novel knock-in mouse model with insertion of thymidine in exon 5 of Pkp2, which mimics a familial case of ACM (PKP2-L404fsX5). We used serial echocardiography, electrocardiography, blood pressure measurements, histology, cardiomyocyte contraction, intracellular calcium measurements, and gene and protein expression studies. RESULTS Serial echocardiography of Pkp2 heterozygous (Pkp2-Het) mice revealed progressive failure of the right ventricle (RV) in animals older than three months of age. By contrast, left ventricular (LV) function remained normal. Electrocardiograms of six-month-old anesthetized Pkp2-Het mice showed normal baseline heart rates and QRS complexes. Cardiac responses to β-adrenergic agonist isoproterenol (2 mg.kg-1) plus caffeine (120 mg.kg-1) were also normal. However, adrenergic stimulation enhanced the susceptibility of Pkp2-Het hearts to tachyarrhythmia and sudden cardiac death. Histologic staining showed no significant fibrosis or adipocyte infiltration in the RVs and LVs of six- and twelve-month-old Pkp2-Het hearts. Contractility assessment of isolated myocytes demonstrated progressively reduced Pkp2-Het RV cardiomyocyte function consistent with RV failure measured by echocardiography. However, aging Pkp2-Het and control RV myocytes loaded with intracellular Ca2+ indicator Fura-2 showed comparable Ca2+ transients. Western blotting of Pkp2-RV homogenates revealed a 40% decrease in actin, while actin immunoprecipitation followed by a 2, 4-dinitrophenylhydrazine staining showed doubled oxidation level. This correlated with a 39% increase in troponin-I phosphorylation. In contrast, Pkp2-Het LV myocytes had normal contraction, actin expression and oxidation, and troponin-I phosphorylation. Finally, Western blotting of cardiac biopsies revealed actin expression was 40% decreased in RVs of end-stage ACM patients. CONCLUSIONS During the early "concealed" phase of ACM, reduced actin expression drives loss of RV myocyte contraction, contributing to progressive RV dysfunction.
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Affiliation(s)
- Emmanuel M Camors
- Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN; Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN
| | - Alyson H Roth
- Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN; Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN
| | - Joseph R Alef
- Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN; Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN
| | - Ryan D Sullivan
- Department of Internal Medicine, University of Arizona College of Medicine, Phoenix, AR
| | - Jason N Johnson
- Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN; Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN; Pediatric Cardiology, St. Jude Children's Research Hospital, Memphis, TN
| | - Enkhsaikhan Purevjav
- Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN; Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN
| | - Jeffrey A Towbin
- Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN; Children's Foundation Research Institute, Le Bonheur Children's Hospital, Memphis, TN; Pediatric Cardiology, St. Jude Children's Research Hospital, Memphis, TN
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16
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Inoue H, Nakamura S, Higo S, Shiba M, Kohama Y, Kondo T, Kameda S, Tabata T, Okuno S, Ikeda Y, Li J, Liu L, Yamazaki S, Takeda M, Ito E, Takashima S, Miyagawa S, Sawa Y, Hikoso S, Sakata Y. Modeling reduced contractility and impaired desmosome assembly due to plakophilin-2 deficiency using isogenic iPS cell-derived cardiomyocytes. Stem Cell Reports 2022; 17:337-351. [PMID: 35063130 PMCID: PMC8828557 DOI: 10.1016/j.stemcr.2021.12.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 12/13/2022] Open
Abstract
Loss-of-function mutations in PKP2, which encodes plakophilin-2, cause arrhythmogenic cardiomyopathy (AC). Restoration of deficient molecules can serve as upstream therapy, thereby requiring a human model that recapitulates disease pathology and provides distinct readouts in phenotypic analysis for proof of concept for gene replacement therapy. Here, we generated isogenic induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) with precisely adjusted expression of plakophilin-2 from a patient with AC carrying a heterozygous frameshift PKP2 mutation. After monolayer differentiation, plakophilin-2 deficiency led to reduced contractility, disrupted intercalated disc structures, and impaired desmosome assembly in iPSC-CMs. Allele-specific fluorescent labeling of endogenous DSG2 encoding desmoglein-2 in the generated isogenic lines enabled real-time desmosome-imaging under an adjusted dose of plakophilin-2. Adeno-associated virus-mediated gene replacement of PKP2 recovered contractility and restored desmosome assembly, which was sequentially captured by desmosome-imaging in plakophilin-2-deficient iPSC-CMs. Our isogenic set of iPSC-CMs recapitulates AC pathology and provides a rapid and convenient cellular platform for therapeutic development. Generation of isogenic iPSC-CMs with a precise dose of plakophilin-2 Modeling reduced contractility and impaired desmosome assembly using iPSC-CMs Generation of isogenic iPSC-CMs for desmosome-imaging Proof of concept of PKP2 replacement using isogenic plakophilin-2-deficient iPSC-CMs
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Affiliation(s)
- Hiroyuki Inoue
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | | | - Shuichiro Higo
- Department of Medical Therapeutics for Heart Failure, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.
| | - Mikio Shiba
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yasuaki Kohama
- Cardiovascular Division, National Hospital Organization, Osaka-Minami Medical Center, Kawachinagano, Osaka 586-8512, Japan
| | - Takumi Kondo
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Satoshi Kameda
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Tomoka Tabata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Shota Okuno
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yoshihiko Ikeda
- Department of Pathology, National Cerebral and Cardiovascular Center, Suita, Osaka 564-8565, Japan
| | - Junjun Li
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan; Department of Design for Tissue Regeneration, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Li Liu
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan; Department of Design for Tissue Regeneration, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Satoru Yamazaki
- Department of Molecular Pharmacology, National Cerebral and Cardiovascular Center, Suita, Osaka 564-8565, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
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17
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Yu N, Zhang J, Phillips ST, Offenbacher S, Zhang S. Impaired function of epithelial plakophilin-2 is associated with periodontal disease. J Periodontal Res 2021; 56:1046-1057. [PMID: 34368962 PMCID: PMC8627832 DOI: 10.1111/jre.12918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/13/2021] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND OBJECTIVES Plakophilin-2 (PKP2) is an intracellular desmosomal anchoring protein that has been implicated in a genome-wide association study, in which genetic variants of PKP2 are associated with Porphyromonas gingivalis (P.gingivalis) -dominant periodontal dysbiosis. In this study, we compared the ex vivo PKP2 expression in periodontitis gingival biopsies to periodontitis-free subjects and assessed the in vitro role of PKP2 in gingival epithelial barrier function and the mechanism by which P.gingivalis modulates PKP2 expression. MATERIAL AND METHODS Using reverse transcription quantitative real-time PCR (RT-qPCR), we determined PKP2 mRNA expression levels in gingival biopsies collected from 11 periodontally healthy, 10 experimental gingivitis, and 10 chronic periodontitis subjects. PKP2 protein expression in gingival biopsies was detected by immunohistochemistry. We then challenged primary gingival epithelial cells with bacteria including P.gingivalis, Campylobacter rectus, and various Toll-like receptor agonists. Western blot and immunofluorescence staining were used to detect protein expression. Inhibitors blocking proteases pathways were tested for P.gingivalis-mediated PKP2 protein degradations. We also knocked down endogenous epithelial PKP2 using lentiviral short-hairpin RNA (shRNA) and evaluated cell proliferation, spreading, and barrier function. RESULTS Periodontitis gingival biopsies had approximately twofold less PKP2 mRNA than did healthy controls (p < .05). PKP2 protein was predominantly expressed in gingival epithelium. In primary gingival epithelial cells, P.gingivalis challenge increased PKP2 mRNA levels, while protein expression decreased, which suggests that P.gingivalis has a protein degradation mechanism. Cysteine proteases inhibitors greatly attenuated P.gingivalis-mediated PKP2 protein degradation. Epithelial cells with deficient PKP2 exhibited inhibited cell proliferation and spreading and failed to form monolayers. Finally, P.gingivalis impaired gingival epithelial barrier function. CONCLUSIONS PKP2 appears to be critical in maintaining gingival epithelial barrier function and is susceptible to degradation by cysteine proteases produced by P.gingivalis. Our findings have identified a mechanism by which P.gingivalis impairs epithelial barrier function by promoting PKP2 degradation.
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Affiliation(s)
- Ning Yu
- The Forsyth Institute, Cambridge, Massachusetts, USA
| | - Jinmei Zhang
- Department of Periodontics, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
| | - Sherill T. Phillips
- Center for Oral and Systemic Diseases, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Steven Offenbacher
- Center for Oral and Systemic Diseases, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Periodontology, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Shaoping Zhang
- Department of Periodontics, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
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18
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Moazzen H, Venger K, Kant S, Leube RE, Krusche CA. Desmoglein 2 regulates cardiogenesis by restricting hematopoiesis in the developing murine heart. Sci Rep 2021; 11:21687. [PMID: 34737300 PMCID: PMC8569146 DOI: 10.1038/s41598-021-00996-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/21/2021] [Indexed: 02/05/2023] Open
Abstract
Cardiac morphogenesis relies on intricate intercellular signaling. Altered signaling impacts cardiac function and is detrimental to embryonic survival. Here we report an unexpected regulatory role of the desmosomal cell adhesion molecule desmoglein 2 (Dsg2) on murine heart development. A large percentage of Dsg2-mutant embryos develop pericardial hemorrhage. Lethal myocardial rupture is occasionally observed, which is not associated with loss of cardiomyocyte contact but with expansion of abnormal, non-myocyte cell clusters within the myocardial wall. Two types of abnormal cell clusters can be distinguished: Type A clusters involve endocard-associated, round-shaped CD31+ cells, which proliferate and invade the myocardium. They acquire Runx1- and CD44-positivity indicating a shift towards a hematopoietic phenotype. Type B clusters expand subepicardially and next to type A clusters. They consist primarily of Ter119+ erythroid cells with interspersed Runx1+/CD44+ cells suggesting that they originate from type A cell clusters. The observed pericardial hemorrhage is caused by migration of erythrocytes from type B clusters through the epicardium and rupture of the altered cardiac wall. Finally, evidence is presented that structural defects of Dsg2-depleted cardiomyocytes are primary to the observed pathogenesis. We propose that cardiomyocyte-driven paracrine signaling, which likely involves Notch1, directs subsequent trans-differentiation of endo- and epicardial cells. Together, our observations uncover a hitherto unknown regulatory role of Dsg2 in cardiogenesis.
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Affiliation(s)
- Hoda Moazzen
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany
| | - Kateryna Venger
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany
| | - Sebastian Kant
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany
| | - Rudolf E Leube
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany.
| | - Claudia A Krusche
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany.
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19
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Matos-Nieves A, Manivannan S, Majumdar U, McBride KL, White P, Garg V. A Multi-Omics Approach Using a Mouse Model of Cardiac Malformations for Prioritization of Human Congenital Heart Disease Contributing Genes. Front Cardiovasc Med 2021; 8:683074. [PMID: 34504875 PMCID: PMC8421733 DOI: 10.3389/fcvm.2021.683074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 07/22/2021] [Indexed: 01/22/2023] Open
Abstract
Congenital heart disease (CHD) is the most common type of birth defect, affecting ~1% of all live births. Malformations of the cardiac outflow tract (OFT) account for ~30% of all CHD and include a range of CHDs from bicuspid aortic valve (BAV) to tetralogy of Fallot (TOF). We hypothesized that transcriptomic profiling of a mouse model of CHD would highlight disease-contributing genes implicated in congenital cardiac malformations in humans. To test this hypothesis, we utilized global transcriptional profiling differences from a mouse model of OFT malformations to prioritize damaging, de novo variants identified from exome sequencing datasets from published cohorts of CHD patients. Notch1+/−; Nos3−/− mice display a spectrum of cardiac OFT malformations ranging from BAV, semilunar valve (SLV) stenosis to TOF. Global transcriptional profiling of the E13.5 Notch1+/−; Nos3−/− mutant mouse OFTs and wildtype controls was performed by RNA sequencing (RNA-Seq). Analysis of the RNA-Seq dataset demonstrated genes belonging to the Hif1α, Tgf-β, Hippo, and Wnt signaling pathways were differentially expressed in the mutant OFT. Mouse to human comparative analysis was then performed to determine if patients with TOF and SLV stenosis display an increased burden of damaging, genetic variants in gene homologs that were dysregulated in Notch1+/−; Nos3−/− OFT. We found an enrichment of de novo variants in the TOF population among the 1,352 significantly differentially expressed genes in Notch1+/−; Nos3−/− mouse OFT but not the SLV population. This association was not significant when comparing only highly expressed genes in the murine OFT to de novo variants in the TOF population. These results suggest that transcriptomic datasets generated from the appropriate temporal, anatomic and cellular tissues from murine models of CHD may provide a novel approach for the prioritization of disease-contributing genes in patients with CHD.
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Affiliation(s)
- Adrianna Matos-Nieves
- Center for Cardiovascular Research and Heart Center, Nationwide Children's Hospital, Columbus, OH, United States
| | - Sathiyanarayanan Manivannan
- Center for Cardiovascular Research and Heart Center, Nationwide Children's Hospital, Columbus, OH, United States
| | - Uddalak Majumdar
- Center for Cardiovascular Research and Heart Center, Nationwide Children's Hospital, Columbus, OH, United States
| | - Kim L McBride
- Center for Cardiovascular Research and Heart Center, Nationwide Children's Hospital, Columbus, OH, United States.,Department of Pediatrics, Ohio State University, Columbus, OH, United States
| | - Peter White
- Department of Pediatrics, Ohio State University, Columbus, OH, United States.,The Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, United States
| | - Vidu Garg
- Center for Cardiovascular Research and Heart Center, Nationwide Children's Hospital, Columbus, OH, United States.,Department of Pediatrics, Ohio State University, Columbus, OH, United States.,Department of Molecular Genetics, Ohio State University, Columbus, OH, United States
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20
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Sommariva E, Stadiotti I, Casella M, Catto V, Dello Russo A, Carbucicchio C, Arnaboldi L, De Metrio S, Milano G, Scopece A, Casaburo M, Andreini D, Mushtaq S, Conte E, Chiesa M, Birchmeier W, Cogliati E, Paolin A, König E, Meraviglia V, De Musso M, Volani C, Cattelan G, Rauhe W, Turnu L, Porro B, Pedrazzini M, Camera M, Corsini A, Tondo C, Rossini A, Pompilio G. Oxidized LDL-dependent pathway as new pathogenic trigger in arrhythmogenic cardiomyopathy. EMBO Mol Med 2021; 13:e14365. [PMID: 34337880 PMCID: PMC8422076 DOI: 10.15252/emmm.202114365] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 07/06/2021] [Accepted: 07/06/2021] [Indexed: 12/30/2022] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is hallmarked by ventricular fibro-adipogenic alterations, contributing to cardiac dysfunctions and arrhythmias. Although genetically determined (e.g., PKP2 mutations), ACM phenotypes are highly variable. More data on phenotype modulators, clinical prognosticators, and etiological therapies are awaited. We hypothesized that oxidized low-density lipoprotein (oxLDL)-dependent activation of PPARγ, a recognized effector of ACM adipogenesis, contributes to disease pathogenesis. ACM patients showing high plasma concentration of oxLDL display severe clinical phenotypes in terms of fat infiltration, ventricular dysfunction, and major arrhythmic event risk. In ACM patient-derived cardiac cells, we demonstrated that oxLDLs are major cofactors of adipogenesis. Mechanistically, the increased lipid accumulation is mediated by oxLDL cell internalization through CD36, ultimately resulting in PPARγ upregulation. By boosting oxLDL in a Pkp2 heterozygous knock-out mice through high-fat diet feeding, we confirmed in vivo the oxidized lipid dependency of cardiac adipogenesis and right ventricle systolic impairment, which are counteracted by atorvastatin treatment. The modulatory role of oxidized lipids on ACM adipogenesis, demonstrated at cellular, mouse, and patient levels, represents a novel risk stratification tool and a target for ACM pharmacological strategies.
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Affiliation(s)
- Elena Sommariva
- Unit of Vascular Biology and Regenerative MedicineCentro Cardiologico Monzino IRCCSMilanItaly
| | - Ilaria Stadiotti
- Unit of Vascular Biology and Regenerative MedicineCentro Cardiologico Monzino IRCCSMilanItaly
| | - Michela Casella
- Heart Rhythm CenterCentro Cardiologico Monzino IRCCSMilanItaly
| | - Valentina Catto
- Heart Rhythm CenterCentro Cardiologico Monzino IRCCSMilanItaly
| | | | | | - Lorenzo Arnaboldi
- Department of Pharmacological and Biomolecular SciencesUniversità degli Studi di MilanoMilanItaly
| | - Simona De Metrio
- Department of Pharmacological and Biomolecular SciencesUniversità degli Studi di MilanoMilanItaly
| | - Giuseppina Milano
- Unit of Vascular Biology and Regenerative MedicineCentro Cardiologico Monzino IRCCSMilanItaly
- Department of Heart and VesselsLaboratory of Cardiovascular ResearchUniversity Hospital of LausanneLausanneSwitzerland
| | - Alessandro Scopece
- Unit of Vascular Biology and Regenerative MedicineCentro Cardiologico Monzino IRCCSMilanItaly
| | - Manuel Casaburo
- Unit of Vascular Biology and Regenerative MedicineCentro Cardiologico Monzino IRCCSMilanItaly
| | - Daniele Andreini
- Unit of Cardiovascular ImagingCentro Cardiologico Monzino IRCCSMilanItaly
- Department of Clinical Sciences and Community HealthUniversità degli Studi di MilanoMilanItaly
| | - Saima Mushtaq
- Unit of Cardiovascular ImagingCentro Cardiologico Monzino IRCCSMilanItaly
| | - Edoardo Conte
- Unit of Cardiovascular ImagingCentro Cardiologico Monzino IRCCSMilanItaly
| | - Mattia Chiesa
- Bioinformatics and Artificial Intelligence facilityCentro Cardiologico Monzino IRCCSMilanItaly
| | | | | | | | - Eva König
- Institute for BiomedicineEurac ResearchAffiliated Institute of the University of LübeckBozenItaly
| | - Viviana Meraviglia
- Institute for BiomedicineEurac ResearchAffiliated Institute of the University of LübeckBozenItaly
| | - Monica De Musso
- Institute for BiomedicineEurac ResearchAffiliated Institute of the University of LübeckBozenItaly
| | - Chiara Volani
- Institute for BiomedicineEurac ResearchAffiliated Institute of the University of LübeckBozenItaly
| | - Giada Cattelan
- Institute for BiomedicineEurac ResearchAffiliated Institute of the University of LübeckBozenItaly
| | | | - Linda Turnu
- Unit of Metabolomics and Cellular Biochemistry of AtherothrombosisCentro Cardiologico Monzino IRCCSMilanItaly
| | - Benedetta Porro
- Unit of Metabolomics and Cellular Biochemistry of AtherothrombosisCentro Cardiologico Monzino IRCCSMilanItaly
| | - Matteo Pedrazzini
- Laboratory of Cardiovascular GeneticsIstituto Auxologico ItalianoIRCCSMilanItaly
| | - Marina Camera
- Department of Pharmacological and Biomolecular SciencesUniversità degli Studi di MilanoMilanItaly
- Unit of Cell and Molecular Biology in Cardiovascular DiseasesCentro Cardiologico Monzino IRCCSMilanItaly
| | - Alberto Corsini
- Department of Pharmacological and Biomolecular SciencesUniversità degli Studi di MilanoMilanItaly
- IRCCS MultiMedicaMilanItaly
| | - Claudio Tondo
- Heart Rhythm CenterCentro Cardiologico Monzino IRCCSMilanItaly
- Department of BiomedicalSurgical and Dental SciencesUniversità degli Studi di MilanoMilanItaly
| | - Alessandra Rossini
- Institute for BiomedicineEurac ResearchAffiliated Institute of the University of LübeckBozenItaly
| | - Giulio Pompilio
- Unit of Vascular Biology and Regenerative MedicineCentro Cardiologico Monzino IRCCSMilanItaly
- Department of BiomedicalSurgical and Dental SciencesUniversità degli Studi di MilanoMilanItaly
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21
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Gerull B, Brodehl A. Insights Into Genetics and Pathophysiology of Arrhythmogenic Cardiomyopathy. Curr Heart Fail Rep 2021; 18:378-390. [PMID: 34478111 PMCID: PMC8616880 DOI: 10.1007/s11897-021-00532-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/09/2021] [Indexed: 02/07/2023]
Abstract
Purpose of Review Arrhythmogenic cardiomyopathy (ACM) is a genetic disease characterized by life-threatening ventricular arrhythmias and sudden cardiac death (SCD) in apparently healthy young adults. Mutations in genes encoding for cellular junctions can be found in about half of the patients. However, disease onset and severity, risk of arrhythmias, and outcome are highly variable and drug-targeted treatment is currently unavailable. Recent Findings This review focuses on advances in clinical risk stratification, genetic etiology, and pathophysiological concepts. The desmosome is the central part of the disease, but other intercalated disc and associated structural proteins not only broaden the genetic spectrum but also provide novel molecular and cellular insights into the pathogenesis of ACM. Signaling pathways and the role of inflammation will be discussed and targets for novel therapeutic approaches outlined. Summary Genetic discoveries and experimental-driven preclinical research contributed significantly to the understanding of ACM towards mutation- and pathway-specific personalized medicine.
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Affiliation(s)
- Brenda Gerull
- Comprehensive Heart Failure Center (CHFC), Department of Medicine I, University Clinic Würzburg, Am Schwarzenberg 15, 97078, Würzburg, Germany.
| | - Andreas Brodehl
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, 32545, Bad Oeynhausen, Germany
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22
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Hammer KP, Mustroph J, Stauber T, Birchmeier W, Wagner S, Maier LS. Beneficial effect of voluntary physical exercise in Plakophilin2 transgenic mice. PLoS One 2021; 16:e0252649. [PMID: 34086773 PMCID: PMC8177441 DOI: 10.1371/journal.pone.0252649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 05/19/2021] [Indexed: 12/31/2022] Open
Abstract
Arrhythmogenic right ventricular cardiomyopathy is a hereditary, rare disease with an increased risk for sudden cardiac death. The disease-causing mutations are located within the desmosomal complex and the highest incidence is found in plakophilin2. However, there are other factors playing a role for the disease progression unrelated to the genotype such as inflammation or exercise. Competitive sports have been identified as risk factor, but the type and extend of physical activity as cofactor for arrhythmogenesis remains under debate. We thus studied the effect of light voluntary exercise on cardiac health in a mouse model. Mice with a heterozygous PKP2 loss-of-function mutation were given the option to exercise in a running wheel which was monitored 24 h/d. We analyzed structural and functional development in vivo by echocardiography which revealed that neither the genotype nor the exercise caused any significant structural changes. Ejection fraction and fractional shortening were not influenced by the genotype itself, but exercise did cause a drop in both parameters after 8 weeks, which returned to normal after 16 weeks of training. The electrophysiological analysis revealed that the arrhythmogenic potential was slightly higher in heterozygous animals (50% vs 18% in wt littermates) and that an additional stressor (isoprenaline) did not lead to an increase of arrhythmogenic events pre run or after 8 weeks of running but the vulnerability was increased after 16 weeks. Exercise-induced alterations in Ca handling and contractility of isolated myocytes were mostly abolished in heterozygous animals. No fibrofatty replacements or rearrangement of gap junctions could be observed. Taken together we could show that light voluntary exercise can cause a transient aggravation of the mutation-induced phenotype which is abolished after long term exercise indicating a beneficial effect of long term light exercise.
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Affiliation(s)
- Karin P. Hammer
- University Hospital Regensburg, Internal Medicine II, Regensburg, Germany
- * E-mail:
| | - Julian Mustroph
- University Hospital Regensburg, Internal Medicine II, Regensburg, Germany
| | - Teresa Stauber
- University Hospital Regensburg, Internal Medicine II, Regensburg, Germany
| | | | - Stefan Wagner
- University Hospital Regensburg, Internal Medicine II, Regensburg, Germany
| | - Lars S. Maier
- University Hospital Regensburg, Internal Medicine II, Regensburg, Germany
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23
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Zhu Y, Shamblin I, Rodriguez E, Salzer GE, Araysi L, Margolies KA, Halade GV, Litovsky SH, Pogwizd S, Gray M, Huke S. Progressive cardiac arrhythmias and ECG abnormalities in the Huntington's disease BACHD mouse model. Hum Mol Genet 2021; 29:369-381. [PMID: 31816043 DOI: 10.1093/hmg/ddz295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 11/11/2019] [Accepted: 12/05/2019] [Indexed: 02/03/2023] Open
Abstract
Huntington's disease (HD) is a dominantly inherited neurodegenerative disease. There is accumulating evidence that HD patients have increased prevalence of conduction abnormalities and compromised sinoatrial node function which could lead to increased risk for arrhythmia. We used mutant Huntingtin (mHTT) expressing bacterial artificial chromosome Huntington's disease mice to determine if they exhibit electrocardiogram (ECG) abnormalities involving cardiac conduction that are known to increase risk of sudden arrhythmic death in humans. We obtained surface ECGs and analyzed arrhythmia susceptibility; we observed prolonged QRS duration, increases in PVCs as well as PACs. Abnormal histological and structural changes that could lead to cardiac conduction system dysfunction were seen. Finally, we observed decreases in desmosomal proteins, plakophilin-2 and desmoglein-2, which have been reported to cause cardiac arrhythmias and reduced conduction. Our study indicates that mHTT could cause progressive cardiac conduction system pathology that could increase the susceptibility to arrhythmias and sudden cardiac death in HD patients.
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Affiliation(s)
- Yujie Zhu
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Isaac Shamblin
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Efrain Rodriguez
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Grace E Salzer
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Lita Araysi
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Katherine A Margolies
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ganesh V Halade
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Silvio H Litovsky
- Department of Pathology, Division of Anatomic Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Steven Pogwizd
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Michelle Gray
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Sabine Huke
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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24
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A catenin of the plakophilin-subfamily, Pkp3, responds to canonical-Wnt pathway components and signals. Biochem Biophys Res Commun 2021; 563:31-39. [PMID: 34058472 DOI: 10.1016/j.bbrc.2021.05.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/21/2022]
Abstract
Vertebrate beta-catenin plays a key role as a transducer of canonical-Wnt signals. We earlier reported that, similar to beta-catenin, the cytoplasmic signaling pool of p120-catenin-isoform1 is stabilized in response to canonical-Wnt signals. To obtain a yet broader view of the Wnt-pathway's impact upon catenin proteins, we focused upon plakophilin3 (plakophilin-3; Pkp3) as a representative of the plakophilin-catenin subfamily. Promoting tissue integrity, the plakophilins assist in linking desmosomal cadherins to intermediate filaments at desmosome junctions, and in common with other catenins they perform additional functions including in the nucleus. In this report, we test whether canonical-Wnt pathway components modulate Pkp3 protein levels. We find that in common with beta-catenin and p120-catenin-isoform1, Pkp3 is stabilized in the presence of a Wnt-ligand or a dominant-active form of the LRP6 receptor. Pkp3's levels are conversely lowered upon expressing destruction-complex components such as GSK3β and Axin, and in further likeness to beta-catenin and p120-isoform1, Pkp3 associates with GSK3beta and Axin. Finally, we note that Pkp3-catenin trans-localizes into the nucleus in response to Wnt-ligand and its exogenous expression stimulates an accepted Wnt reporter. These findings fit an expanded model where context-dependent Wnt-signals or pathway components modulate Pkp3-catenin levels. Future studies will be needed to assess potential gene regulatory, cell adhesive, or cytoskeletal effects.
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25
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Leone MP, Palumbo P, Saenen J, Mastroianno S, Castellana S, Amico C, Mazza T, Potenza DR, Petracca A, Castori M, Carella M, Di Stolfo G. Phenotypic Variability of a Pathogenic PKP2 Mutation in an Italian Family Affected by Arrhythmogenic Cardiomyopathy and Juvenile Sudden Death: Considerations From Molecular Autopsy to Sport Restriction. Front Cardiovasc Med 2021; 8:635141. [PMID: 34095246 PMCID: PMC8173114 DOI: 10.3389/fcvm.2021.635141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 03/01/2021] [Indexed: 01/11/2023] Open
Abstract
Background: Arrhythmogenic cardiomyopathy (ACM) is a genetic disorder with an estimated prevalence between 1:2,000 and 1:5,000 and is characterized by the fibrofatty replacement of cardiomyocytes that predisposes to malignant arrhythmias, heart failure, and sudden cardiac death. The diagnosis is based on the 2010 Task Force Criteria including family history, electrocardiographic traits and arrhythmogenic pattern, specific gene mutations, and structural and/or histological abnormalities. Most ACMs display an autosomal dominant mode of inheritance often with incomplete penetrance and variable expressivity. Genetic screening of patients with ACM identifies pathogenic or likely pathogenic variants, prevalently in genes encoding the cardiac desmosome (PKP2, DSP, DSC2, DSG2, and JUP) or less frequently in non-desmosomal genes (CTNNA3, PLN, TMEM43, RYR2, SCN5A, CDH2, and DES). Methods: In the present study, we performed molecular autopsy in a boy who died suddenly during physical exertion. In addition to post-mortem examination, a DNA sample was analyzed with next-generation sequencing (NGS). Results: The genetic analysis revealed the presence of pathogenic heterozygous c.314del (p.Pro105Leufs*7) frameshift variant in the PKP2 gene. Cascade screening of family members allowed us to identify 12 mutation carriers and to intervene on subjects at risk, many of whom were athletes. Conclusions: Molecular autopsy can establish cardiogenetic diagnosis and allow appropriate preventative measures in high-risk relatives.
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Affiliation(s)
- Maria Pia Leone
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Pietro Palumbo
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Johan Saenen
- Department of Cardiology, University Hospital Antwerp, University Antwerp, Antwerp, Belgium
| | - Sandra Mastroianno
- Cardiovascular Department, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Stefano Castellana
- Bioinformatic Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo - Istituto Mendel, Rome, Italy
| | - Cesare Amico
- Cardiovascular Department, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Tommaso Mazza
- Bioinformatic Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo - Istituto Mendel, Rome, Italy
| | - Domenico Rosario Potenza
- Cardiovascular Department, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Antonio Petracca
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Marco Castori
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Massimo Carella
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Giuseppe Di Stolfo
- Cardiovascular Department, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
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Wu Y, Liu L, Shen X, Liu W, Ma R. Plakophilin-2 Promotes Lung Adenocarcinoma Development via Enhancing Focal Adhesion and Epithelial-Mesenchymal Transition. Cancer Manag Res 2021; 13:559-570. [PMID: 33519235 PMCID: PMC7837596 DOI: 10.2147/cmar.s281663] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 01/05/2021] [Indexed: 12/29/2022] Open
Abstract
Background Lung cancer is one of the most aggressive tumors with high incidence and mortality, which could be classified into lung squamous cell carcinoma (LUSC) and lung adenocarcinoma (LUAD). Overexpression of Plakophilin-2 (PKP2) has been reported in multiple malignancies. However, the expression and function mechanism of PKP2 in LUAD remain illusive. Methods Real-time PCR (RT-PCR) was conducted to assess the expression of PKP2 in LUAD cells and tissues. An integrated analysis of PKP2 expression in The Cancer Genome Atlas (TCGA) was further performed. The effect of PKP2 on cell proliferation and invasion potential were then evaluated with loss-of-function assays in vitro. Xenograft nude mouse models were used to determine the role of PKP2 in LUAD tumorigenicity in vivo. Bioinformatics prediction, immunohistochemistry and Western blot were performed to examine whether PKP2 promoted LUAD development via enhancing focal adhesion and epithelial–mesenchymal transition. Results PKP2 expression was highly expressed in LUAD tissues compared with that in normal tissues and predicated poor prognosis of LUAD patients. TCGA LUAD cohort analysis also showed that high expression of PKP2 indicated unfavorable outcomes in LUAD patients. PKP2 expression was also upregulated in lung cancer cells. Functionally, knockdown of PKP2 suppressed lung cancer cell proliferation and invasion in vitro, while inhibited xenograft lung tumor development in vivo. Mechanistically, we demonstrated that high expression of PKP2 in LUAD was correlated with enhanced EMT and focal adhesion. Knockdown of PKP2 inhibited the expression of EMT-related Vimentin and N-cadherin and focal adhesion-associated expression of BMP4, ICAM1, and VCAM1 in xenograft tumors and lung cancer cells. Conclusion In summary, our findings indicate that PKP2 functions as an oncogene in LUAD, which could be utilized as a novel diagnostic and therapeutic marker for LUAD treatment.
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Affiliation(s)
- Yang Wu
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang 110042, Liaoning, People's Republic of China
| | - Lu Liu
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116044, Liaoning, People's Republic of China
| | - Xiaoyu Shen
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang 110042, Liaoning, People's Republic of China
| | - Wenjing Liu
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang 110042, Liaoning, People's Republic of China
| | - Rui Ma
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang 110042, Liaoning, People's Republic of China
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Katanyuwong P, Khongkraparn A, Wattanasirichaigoon D. A Novel Homozygous PKP2 Variant in Severe Neonatal Non-compaction and Concomitant Ventricular Septal Defect: A Case Report. Front Pediatr 2021; 9:801491. [PMID: 35059364 PMCID: PMC8764405 DOI: 10.3389/fped.2021.801491] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/24/2021] [Indexed: 11/13/2022] Open
Abstract
Left ventricular non-compaction (LVNC) is a rare and genetically heterogeneous cardiomyopathy. The disorder vastly affects infants and young children. Severe neonatal LVNC is relatively rare. The prevalence of genetic defects underlying pediatric and adult-onset LVNC is about 17-40%. Mutations of MYH7 and MYBPC3 sarcomeric genes are found in the vast majority of the positive pediatric cases. PKP2 encodes plakophilin-2, a non-sarcomeric desmosomal protein, which has multiple roles in cardiac myocytes including cell-cell adhesion, tightening gap junction, and transcriptional factor. Most of the reported PKP2 mutations are heterozygous missense and truncating variants, and they are associated with an adult-onset autosomal dominant disorder, namely arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C). Homozygous PKP2 mutations have been rarely described. Herein, we present a rare case of an infant with neonatal onset of congestive heart failure owing to severe LVNC and multiple muscular VSD. Medical treatments failed to control the heart failure and the patient died at 11 months of age. Whole-exome sequencing identified a novel homozygous PKP2 variant, c.1511-1G>C, in the patient. An mRNA analysis revealed aberrant transcript lacking exon 7, which was predicted to cause a frameshift and truncated peptide (p.Gly460GlufsTer2). The heterozygous parents had normal cardiac structures and functions as demonstrated by electrocardiogram and echocardiography. Pathogenic variants of sarcomeric genes analyzed were not found in the patient. We conducted a literature review and identified eight families with biallelic PKP2 mutations. We observed that three families (our included) with null variants were linked to lethal phenotypes, while homozygous missense mutations resulted in less severe manifestations: adolescent-onset ARVD/C and childhood-onset DCM. Our data support a previous notion that severe neonatal LVNC might represent a unique entity and had distinct genetic spectrum. In conclusion, the present study has extended the phenotypes and genotypes of PKP2-related disorders and lethal LVNC.
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Affiliation(s)
- Poomiporn Katanyuwong
- Division of Cardiology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Arthaporn Khongkraparn
- Division of Medical Genetics, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Duangrurdee Wattanasirichaigoon
- Division of Medical Genetics, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Beffagna G, Sommariva E, Bellin M. Mechanotransduction and Adrenergic Stimulation in Arrhythmogenic Cardiomyopathy: An Overview of in vitro and in vivo Models. Front Physiol 2020; 11:568535. [PMID: 33281612 PMCID: PMC7689294 DOI: 10.3389/fphys.2020.568535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 10/19/2020] [Indexed: 01/09/2023] Open
Abstract
Arrhythmogenic Cardiomyopathy (AC) is a rare inherited heart disease, manifesting with progressive myocardium degeneration and dysfunction, and life-threatening arrhythmic events that lead to sudden cardiac death. Despite genetic determinants, most of AC patients admitted to hospital are athletes or very physically active people, implying the existence of other disease-causing factors. It is recognized that AC phenotypes are enhanced and triggered by strenuous physical activity, while excessive mechanical stretch and load, and repetitive adrenergic stimulation are mechanisms influencing disease penetrance. Different approaches have been undertaken to recapitulate and study both mechanotransduction and adrenergic signaling in AC, including the use of in vitro cellular and tissue models, and the development of in vivo models (particularly rodents but more recently also zebrafish). However, it remains challenging to reproduce mechanical load stimuli and physical activity in laboratory experimental settings. Thus, more work to drive the innovation of advanced AC models is needed to recapitulate these subtle physiological influences. Here, we review the state-of-the-art in this field both in clinical and laboratory-based modeling scenarios. Specific attention will be focused on highlighting gaps in the knowledge and how they may be resolved by utilizing novel research methodology.
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Affiliation(s)
- Giorgia Beffagna
- Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, Padua, Italy.,Department of Biology, University of Padua, Padua, Italy
| | - Elena Sommariva
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Milena Bellin
- Department of Biology, University of Padua, Padua, Italy.,Veneto Institute of Molecular Medicine, Padua, Italy.,Department of Anatomy and Embryology, Leiden University Medical Center, Leiden, Netherlands
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Gao L, Li X, Guo Q, Nie X, Hao Y, Liu Q, Liu J, Zhu L, Yan L, Lin B. Identification of PKP 2/3 as potential biomarkers of ovarian cancer based on bioinformatics and experiments. Cancer Cell Int 2020; 20:509. [PMID: 33088217 PMCID: PMC7568375 DOI: 10.1186/s12935-020-01602-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 10/12/2020] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Plakophilins (PKPs) are widely involved in gene transcription, translation, and signal transduction, playing a crucial role in tumorigenesis and progression. However, the function and potential mechanism of PKP1/2/3 in ovarian cancer (OC) remains unclear. It's of great value to explore the expression and prognostic values of PKP1/2/3 and their potential mechanisms, immune infiltration in OC. METHODS The expression levels, prognostic values and genetic variations of PKP1/2/3 in OC were explored by various bioinformatics tools and databases, and PKP2/3 were selected for further analyzing their regulation network and immune infiltration. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes pathways (KEGG) enrichment were also conducted. Finally, the expression and prognosis of PKP2 were validated by immunohistochemistry. RESULTS The expression level and prognosis of PKP1 showed little significance in ovarian cancer, and the expression of PKP2/3 mRNA and protein were upregulated in OC, showing significant correlations with poor prognosis of OC. Functional enrichment analysis showed that PKP2/3 and their correlated genes were significantly enriched in adaptive immune response, cytokine receptor activity, organization of cell-cell junction and extracellular matrix; KEGG analysis showed that PKP2/3 and their significantly correlated genes were involved in signaling pathways including cytokine-mediated signaling pathway, receptor signaling pathway and pathways in cancer. Moreover, PKP2/3 were correlated with lymphocytes and immunomodulators. We confirmed that high expression of PKP2 was significantly associated with advanced stage, poor differentiation and poor prognosis of OC patients. CONCLUSION Members of plakophilins family showed various degrees of abnormal expressions and prognostic values in ovarian cancer. PKP2/3 played crucial roles in tumorigenesis, aggressiveness, malignant biological behavior and immune infiltration of OC, and can be regarded as potential biomarker for early diagnosis and prognosis evaluation in OC.
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Affiliation(s)
- Lingling Gao
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Xiao Li
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Qian Guo
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Xin Nie
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Yingying Hao
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Qing Liu
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Juanjuan Liu
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Liancheng Zhu
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Limei Yan
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
| | - Bei Lin
- Department of Obstetrics and Gynaecology, Shengjing Hospital of China Medical University, No.36 Sanhao Street, Heping District, Shenyang, 110004 Liaoning China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, Liaoning China
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Marchal GA, Verkerk AO, Mohan RA, Wolswinkel R, Boukens BJD, Remme CA. The sodium channel Na V 1.5 impacts on early murine embryonic cardiac development, structure and function in a non-electrogenic manner. Acta Physiol (Oxf) 2020; 230:e13493. [PMID: 32386467 PMCID: PMC7539970 DOI: 10.1111/apha.13493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/15/2020] [Accepted: 05/01/2020] [Indexed: 12/19/2022]
Abstract
AIM The voltage-gated sodium channel NaV 1.5, encoded by SCN5A, is essential for cardiac excitability and ensures proper electrical conduction. Early embryonic death has been observed in several murine models carrying homozygous Scn5amutations. We investigated when sodium current (INa ) becomes functionally relevant in the murine embryonic heart and how Scn5a/NaV 1.5 dysfunction impacts on cardiac development. METHODS Involvement of NaV 1.5-generated INa in murine cardiac electrical function was assessed by optical mapping in wild type (WT) embryos (embryonic day (E)9.5 and E10.5) in the absence and presence of the sodium channel blocker tetrodotoxin (30 µmol/L). INa was assessed by patch-clamp analysis in cardiomyocytes isolated from WT embryos (E9.5-17.5). In addition, cardiac morphology and electrical function was assessed in Scn5a-1798insD-/- embryos (E9.5-10.5) and their WT littermates. RESULTS In WT embryos, tetrodotoxin did not affect cardiac activation at E9.5, but slowed activation at E10.5. Accordingly, patch-clamp measurements revealed that INa was virtually absent at E9.5 but robustly present at E10.5. Scn5a-1798insD-/- embryos died in utero around E10.5, displaying severely affected cardiac activation and morphology. Strikingly, altered ventricular activation was observed in Scn5a-1798insD-/- E9.5 embryos before the onset of INa , in addition to reduced cardiac tissue volume compared to WT littermates. CONCLUSION We here demonstrate that NaV 1.5 is involved in cardiac electrical function from E10.5 onwards. Scn5a-1798insD-/- embryos displayed cardiac structural abnormalities at E9.5, indicating that NaV 1.5 dysfunction impacts on embryonic cardiac development in a non-electrogenic manner. These findings are potentially relevant for understanding structural defects observed in relation to NaV 1.5 dysfunction.
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Affiliation(s)
- Gerard A. Marchal
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Arie O. Verkerk
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
- Department of Medical Biology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Rajiv A. Mohan
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
- Department of Medical Biology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Rianne Wolswinkel
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Bastiaan J. D. Boukens
- Department of Medical Biology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Carol Ann Remme
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
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Blok M, Boukens BJ. Mechanisms of Arrhythmias in the Brugada Syndrome. Int J Mol Sci 2020; 21:ijms21197051. [PMID: 32992720 PMCID: PMC7582368 DOI: 10.3390/ijms21197051] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022] Open
Abstract
Arrhythmias in Brugada syndrome patients originate in the right ventricular outflow tract (RVOT). Over the past few decades, the characterization of the unique anatomy and electrophysiology of the RVOT has revealed the arrhythmogenic nature of this region. However, the mechanisms that drive arrhythmias in Brugada syndrome patients remain debated as well as the exact site of their occurrence in the RVOT. Identifying the site of origin and mechanism of Brugada syndrome would greatly benefit the development of mechanism-driven treatment strategies.
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Affiliation(s)
- Michiel Blok
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Bastiaan J. Boukens
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Correspondence: ; Tel.: +31-(0)20-566-4659
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Gerull B, Brodehl A. Genetic Animal Models for Arrhythmogenic Cardiomyopathy. Front Physiol 2020; 11:624. [PMID: 32670084 PMCID: PMC7327121 DOI: 10.3389/fphys.2020.00624] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022] Open
Abstract
Arrhythmogenic cardiomyopathy has been clinically defined since the 1980s and causes right or biventricular cardiomyopathy associated with ventricular arrhythmia. Although it is a rare cardiac disease, it is responsible for a significant proportion of sudden cardiac deaths, especially in athletes. The majority of patients with arrhythmogenic cardiomyopathy carry one or more genetic variants in desmosomal genes. In the 1990s, several knockout mouse models of genes encoding for desmosomal proteins involved in cell-cell adhesion revealed for the first time embryonic lethality due to cardiac defects. Influenced by these initial discoveries in mice, arrhythmogenic cardiomyopathy received an increasing interest in human cardiovascular genetics, leading to the discovery of mutations initially in desmosomal genes and later on in more than 25 different genes. Of note, even in the clinic, routine genetic diagnostics are important for risk prediction of patients and their relatives with arrhythmogenic cardiomyopathy. Based on improvements in genetic animal engineering, different transgenic, knock-in, or cardiac-specific knockout animal models for desmosomal and nondesmosomal proteins have been generated, leading to important discoveries in this field. Here, we present an overview about the existing animal models of arrhythmogenic cardiomyopathy with a focus on the underlying pathomechanism and its importance for understanding of this disease. Prospectively, novel mechanistic insights gained from the whole animal, organ, tissue, cellular, and molecular levels will lead to the development of efficient personalized therapies for treatment of arrhythmogenic cardiomyopathy.
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Affiliation(s)
- Brenda Gerull
- Comprehensive Heart Failure Center Wuerzburg, Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany.,Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| | - Andreas Brodehl
- Erich and Hanna Klessmann Institute for Cardiovascular Research and Development, Heart and Diabetes Center NRW, University Hospitals of the Ruhr-University of Bochum, Bad Oeynhausen, Germany
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Arrhythmogenic Cardiomyopathy: Molecular Insights for Improved Therapeutic Design. J Cardiovasc Dev Dis 2020; 7:jcdd7020021. [PMID: 32466575 PMCID: PMC7345706 DOI: 10.3390/jcdd7020021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/17/2020] [Accepted: 05/20/2020] [Indexed: 02/07/2023] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is an inherited disorder characterized by structural and electrical cardiac abnormalities, including myocardial fibro-fatty replacement. Its pathological ventricular substrate predisposes subjects to an increased risk of sudden cardiac death (SCD). ACM is a notorious cause of SCD in young athletes, and exercise has been documented to accelerate its progression. Although the genetic culprits are not exclusively limited to the intercalated disc, the majority of ACM-linked variants reside within desmosomal genes and are transmitted via Mendelian inheritance patterns; however, penetrance is highly variable. Its natural history features an initial “concealed phase” that results in patients being vulnerable to malignant arrhythmias prior to the onset of structural changes. Lack of effective therapies that target its pathophysiology renders management of patients challenging due to its progressive nature, and has highlighted a critical need to improve our understanding of its underlying mechanistic basis. In vitro and in vivo studies have begun to unravel the molecular consequences associated with disease causing variants, including altered Wnt/β-catenin signaling. Characterization of ACM mouse models has facilitated the evaluation of new therapeutic approaches. Improved molecular insight into the condition promises to usher in novel forms of therapy that will lead to improved care at the clinical bedside.
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DeWitt ES, Chandler SF, Hylind RJ, Beausejour Ladouceur V, Blume ED, VanderPluym C, Powell AJ, Fynn-Thompson F, Roberts AE, Sanders SP, Bezzerides V, Lakdawala NK, MacRae CA, Abrams DJ. Phenotypic Manifestations of Arrhythmogenic Cardiomyopathy in Children and Adolescents. J Am Coll Cardiol 2020; 74:346-358. [PMID: 31319917 DOI: 10.1016/j.jacc.2019.05.022] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 05/07/2019] [Accepted: 05/10/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Arrhythmogenic cardiomyopathy (ACM) is a variably penetrant disease increasingly identified in young patients. OBJECTIVES This study sought to describe the diverse phenotype, genotype, and outcomes in pediatric and adolescent patients. METHODS Records from 1999 to 2016 were reviewed for individuals age <21 years with a consistent personal or family history. Patients were categorized by right ventricular (RV), left dominant (LD), or biventricular subtypes using 2010 Task Force Criteria or proposed features of LD disease, encompassing electrocardiographic, structural, histological, and arrhythmic characteristics. Genetic variants classified as pathogenic and/or likely pathogenic by 2015 American College of Medical Genetics and Genomics criteria in recognized disease-associated genes were included. RESULTS Manifest disease was evident in 32 patients (age 15.1 ± 3.8 years), of whom 22 were probands, including 16 RV, 7 LD, and 9 biventricular ACM. Nondiagnostic features were seen in 5 of 15 family members. RV disease was associated with cardiac arrest and ventricular tachycardia (p = 0.02) and prevalence of PKP2 variants (p < 0.01), whereas biventricular disease was associated with a younger age of onset (p = 0.02). LD ACM was associated with variants in DSP and LMNA, and biventricular ACM with more a diverse etiology in desmosomal genes. Cardiac arrest was observed in 5 probands (age 15.3 ± 1.9 years) and ventricular tachycardia in 10 (age 16.6 ± 2.7 years), 6 probands, and 4 family members. Features suggestive of myocardial inflammation were seen in 6 patients, with ventricular tachycardia and/or cardiac arrest in 3 patients. Cardiac transplantation was performed in 10 patients. There were no deaths. In RV and biventricular disease, electrocardiographic preceded imaging features, whereas the reverse was seen in LD disease. CONCLUSIONS ACM in the young has highly varied phenotypic expression incorporating life-threatening arrhythmia, heart failure, and myocardial inflammation. Increased awareness of early onset, aggressive disease has important implications for patient management and familial screening.
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Affiliation(s)
- Elizabeth S DeWitt
- Inherited Cardiac Arrhythmia Program, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Stephanie F Chandler
- Inherited Cardiac Arrhythmia Program, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Robyn J Hylind
- Inherited Cardiac Arrhythmia Program, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Virginie Beausejour Ladouceur
- Inherited Cardiac Arrhythmia Program, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Elizabeth D Blume
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Christina VanderPluym
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Andrew J Powell
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Francis Fynn-Thompson
- Department of Cardiovascular Surgery, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Amy E Roberts
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Stephen P Sanders
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Vassilios Bezzerides
- Inherited Cardiac Arrhythmia Program, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Neal K Lakdawala
- Cardiovascular Genetics Program, Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Calum A MacRae
- Cardiovascular Genetics Program, Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Dominic J Abrams
- Inherited Cardiac Arrhythmia Program, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts.
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Abstract
Intercalated discs (ICDs) are highly orchestrated structures that connect neighboring cardiomyocytes in the heart. Three major complexes are distinguished in ICD: desmosome, adherens junction (AJ), and gap junction (GJ). Desmosomes are major cell adhesion junctions that anchor cell membrane to the intermediate filament network; AJs connect the actin cytoskeleton of adjacent cells; and gap junctions metabolically and electrically connect the cytoplasm of adjacent cardiomyocytes. All these complexes work as a single unit, the so-called area composita, interdependently rather than individually. Mutation or altered expression of ICD proteins results in various cardiac diseases, such as ARVC (arrhythmogenic right ventricular cardiomyopathy), dilated cardiomyopathy, and hypotrophy cardiomyopathy, eventually leading to heart failure. In this article, we first review the recent findings on the structural organization of ICD and their functions and then focus on the recent advances in molecular pathogenesis of the ICD-related heart diseases, which include two major areas: i) the ICD gene mutations in cardiac diseases, and ii) the involvement of ICD proteins in signal transduction pathways leading to myocardium remodeling and eventual heart failure. These major ICD-related signaling pathways include Wnt/β-catenin pathway, p38 MAPK cascade, Rho-dependent serum response factor (SRF) signaling, calcineurin/NFAT signaling, Hippo kinase cascade, etc., which are differentially regulated in pathological conditions.
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Galindo I, Gómez-Morales M, Díaz-Cano I, Andrades Á, Caba-Molina M, Miranda-León MT, Medina PP, Martín-Padron J, Fárez-Vidal ME. The value of desmosomal plaque-related markers to distinguish squamous cell carcinoma and adenocarcinoma of the lung. Ups J Med Sci 2020; 125:19-29. [PMID: 31809668 PMCID: PMC7054907 DOI: 10.1080/03009734.2019.1692101] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background: An antibody panel is needed to definitively differentiate between adenocarcinoma (AC) and squamous cell carcinoma (SCC) in order to meet more stringent requirements for the histologic classification of lung cancers. Staining of desmosomal plaque-related proteins may be useful in the diagnosis of lung SCC.Materials and methods: We compared the usefulness of six conventional (CK5/6, p40, p63, CK7, TTF1, and Napsin A) and three novel (PKP1, KRT15, and DSG3) markers to distinguish between lung SCC and AC in 85 small biopsy specimens (41 ACs and 44 SCCs). Correlations were examined between expression of the markers and patients' histologic and clinical data.Results: The specificity for SCC of membrane staining for PKP1, KRT15, and DSG3 was 97.4%, 94.6%, and 100%, respectively, and it was 100% when the markers were used together and in combination with the conventional markers (AUCs of 0.7619 for Panel 1 SCC, 0.7375 for Panel 2 SCC, 0.8552 for Panel 1 AC, and 0.8088 for Panel 2 AC). In a stepwise multivariate logistic regression model, the combination of CK5/6, p63, and PKP1 in membrane was the optimal panel to differentiate between SCC and AC, with a percentage correct classification of 96.2% overall (94.6% of ACs and 97.6% of SCCs). PKP1 and DSG3 are related to the prognosis.Conclusions: PKP1, KRT15, and DSG3 are highly specific for SCC, but they were more useful to differentiate between SCC and AC when used together and in combination with conventional markers. PKP1 and DSG3 expressions may have prognostic value.
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Affiliation(s)
- Inmaculada Galindo
- Department of Pathology, School of Medicine, University of Granada, Granada, Spain
| | | | - Inés Díaz-Cano
- Department of Biochemistry and Molecular Biology III, School of Medicine, University of Granada, Granada, Spain
- Centre for Genomics and Oncological Research (GENYO), Granada, Spain
- Institute for Biomedical Research (IBS Granada), University Hospital Complex of Granada/University of Granada, Granada, Spain
| | - Álvaro Andrades
- Centre for Genomics and Oncological Research (GENYO), Granada, Spain
- Department of Biochemistry and Molecular Biology I, University of Granada, Granada, Spain
| | - Mercedes Caba-Molina
- Department of Pathology, School of Medicine, University of Granada, Granada, Spain
| | - María Teresa Miranda-León
- Department of Statistics and Operative Research, School of Medicine, University of Granada, Granada, Spain
| | - Pedro Pablo Medina
- Centre for Genomics and Oncological Research (GENYO), Granada, Spain
- Department of Biochemistry and Molecular Biology I, University of Granada, Granada, Spain
| | - Joel Martín-Padron
- Department of Biochemistry and Molecular Biology III, School of Medicine, University of Granada, Granada, Spain
- Centre for Genomics and Oncological Research (GENYO), Granada, Spain
- Institute for Biomedical Research (IBS Granada), University Hospital Complex of Granada/University of Granada, Granada, Spain
| | - María Esther Fárez-Vidal
- Department of Biochemistry and Molecular Biology III, School of Medicine, University of Granada, Granada, Spain
- Institute for Biomedical Research (IBS Granada), University Hospital Complex of Granada/University of Granada, Granada, Spain
- CONTACT María Esther Fárez-Vidal Department of Biochemistry and Molecular Biology III, School of Medicine, University of Granada, 18012 Granada, Spain
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Abstract
Arrhythmogenic cardiomyopathy is a genetic disorder characterized by the risk of life-threatening arrhythmias, myocardial dysfunction and fibrofatty replacement of myocardial tissue. Mutations in genes that encode components of desmosomes, the adhesive junctions that connect cardiomyocytes, are the predominant cause of arrhythmogenic cardiomyopathy and can be identified in about half of patients with the condition. However, the molecular mechanisms leading to myocardial destruction, remodelling and arrhythmic predisposition remain poorly understood. Through the development of animal, induced pluripotent stem cell and other models of disease, advances in our understanding of the pathogenic mechanisms of arrhythmogenic cardiomyopathy over the past decade have brought several signalling pathways into focus. These pathways include canonical and non-canonical WNT signalling, the Hippo-Yes-associated protein (YAP) pathway and transforming growth factor-β signalling. These studies have begun to identify potential therapeutic targets whose modulation has shown promise in preclinical models. In this Review, we summarize and discuss the reported molecular mechanisms underlying the pathogenesis of arrhythmogenic cardiomyopathy.
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Puzzi L, Borin D, Gurha P, Lombardi R, Martinelli V, Weiss M, Andolfi L, Lazzarino M, Mestroni L, Marian AJ, Sbaizero O. Knock Down of Plakophillin 2 Dysregulates Adhesion Pathway through Upregulation of miR200b and Alters the Mechanical Properties in Cardiac Cells. Cells 2019; 8:cells8121639. [PMID: 31847412 PMCID: PMC6952926 DOI: 10.3390/cells8121639] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/08/2019] [Accepted: 12/11/2019] [Indexed: 01/06/2023] Open
Abstract
Background: Mutations in genes encoding intercalated disk/desmosome proteins, such as plakophilin 2 (PKP2), cause arrhythmogenic cardiomyopathy (ACM). Desmosomes are responsible for myocyte–myocyte attachment and maintaining mechanical integrity of the myocardium. Methods: We knocked down Pkp2 in HL-1 mouse atrial cardiomyocytes (HL-1Pkp2-shRNA) and characterized their biomechanical properties. Gene expression was analyzed by RNA-Sequencing, microarray, and qPCR. Immunofluorescence was used to detect changes in cytoskeleton and focal adhesion. Antagomirs were used to knock down expression of selected microRNA (miR) in the rescue experiments. Results: Knockdown of Pkp2 was associated with decreased cardiomyocyte stiffness and work of detachment, and increased plasticity index. Altered mechanical properties were associated with impaired actin cytoskeleton in HL-1Pkp2-shRNA cells. Analysis of differentially expressed genes identified focal adhesion and actin cytoskeleton amongst the most dysregulated pathways, and miR200 family (a, b, and 429) as the most upregulated miRs in HL-1Pkp2-shRNA cells. Knockdown of miR-200b but not miR-200a, miR-429, by sequence-specific shRNAs partially rescued integrin-α1 (Itga1) levels, actin organization, cell adhesion (on collagen), and stiffness. Conclusions: PKP2 deficiency alters cardiomyocytes adhesion through a mechanism that involves upregulation of miR-200b and suppression of Itga1 expression. These findings provide new insights into the molecular basis of altered mechanosensing in ACM.
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Affiliation(s)
- Luca Puzzi
- Engineering and Architecture Department, University of Trieste, 34127 Trieste, Italy; (L.P.); (D.B.)
| | - Daniele Borin
- Engineering and Architecture Department, University of Trieste, 34127 Trieste, Italy; (L.P.); (D.B.)
| | - Priyatansh Gurha
- Centre for Cardiovascular Genetics, Institute of Molecular Medicine at the University of Texas Health Science Centre and Texas Heart Institute, Houston, TX 77030, USA; (P.G.); (A.J.M.)
| | - Raffaella Lombardi
- Advanced Biomedical Sciences, Federico II University, 80138 Napoli, Italy;
| | - Valentina Martinelli
- International Centre for Genetic Engineering and Biotechnology, 34149 Trieste, Italy;
| | - Marek Weiss
- Institute of Physics, Faculty of Technical Physics, Poznan University of Technology, Piotrowo 3, 60965 Poznan, Poland
| | - Laura Andolfi
- CNR-IOM, Area Science Park, 34149 Trieste, Italy; (L.A.); (M.L.)
| | - Marco Lazzarino
- CNR-IOM, Area Science Park, 34149 Trieste, Italy; (L.A.); (M.L.)
| | - Luisa Mestroni
- Cardiovascular Institute, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Ali J. Marian
- Centre for Cardiovascular Genetics, Institute of Molecular Medicine at the University of Texas Health Science Centre and Texas Heart Institute, Houston, TX 77030, USA; (P.G.); (A.J.M.)
| | - Orfeo Sbaizero
- Engineering and Architecture Department, University of Trieste, 34127 Trieste, Italy; (L.P.); (D.B.)
- Correspondence: ; Tel.: +39-040-558-3770
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40
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van Opbergen CJM, Noorman M, Pfenniger A, Copier JS, Vermij SH, Li Z, van der Nagel R, Zhang M, de Bakker JMT, Glass AM, Mohler PJ, Taffet SM, Vos MA, van Rijen HVM, Delmar M, van Veen TAB. Plakophilin-2 Haploinsufficiency Causes Calcium Handling Deficits and Modulates the Cardiac Response Towards Stress. Int J Mol Sci 2019; 20:E4076. [PMID: 31438494 PMCID: PMC6747156 DOI: 10.3390/ijms20174076] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/16/2019] [Accepted: 08/19/2019] [Indexed: 01/06/2023] Open
Abstract
Human variants in plakophilin-2 (PKP2) associate with most cases of familial arrhythmogenic cardiomyopathy (ACM). Recent studies show that PKP2 not only maintains intercellular coupling, but also regulates transcription of genes involved in Ca2+ cycling and cardiac rhythm. ACM penetrance is low and it remains uncertain, which genetic and environmental modifiers are crucial for developing the cardiomyopathy. In this study, heterozygous PKP2 knock-out mice (PKP2-Hz) were used to investigate the influence of exercise, pressure overload, and inflammation on a PKP2-related disease progression. In PKP2-Hz mice, protein levels of Ca2+-handling proteins were reduced compared to wildtype (WT). PKP2-Hz hearts exposed to voluntary exercise training showed right ventricular lateral connexin43 expression, right ventricular conduction slowing, and a higher susceptibility towards arrhythmias. Pressure overload increased levels of fibrosis in PKP2-Hz hearts, without affecting the susceptibility towards arrhythmias. Experimental autoimmune myocarditis caused more severe subepicardial fibrosis, cell death, and inflammatory infiltrates in PKP2-Hz hearts than in WT. To conclude, PKP2 haploinsufficiency in the murine heart modulates the cardiac response to environmental modifiers via different mechanisms. Exercise upon PKP2 deficiency induces a pro-arrhythmic cardiac remodeling, likely based on impaired Ca2+ cycling and electrical conduction, versus structural remodeling. Pathophysiological stimuli mainly exaggerate the fibrotic and inflammatory response.
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Affiliation(s)
- Chantal J M van Opbergen
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
| | - Maartje Noorman
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
| | - Anna Pfenniger
- Division of Cardiology, NYU School of Medicine, New York, NY 10016, USA
| | - Jaël S Copier
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
| | - Sarah H Vermij
- Division of Cardiology, NYU School of Medicine, New York, NY 10016, USA
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern 3012, Switzerland
| | - Zhen Li
- Division of Cardiology, NYU School of Medicine, New York, NY 10016, USA
| | - Roel van der Nagel
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
| | - Mingliang Zhang
- Division of Cardiology, NYU School of Medicine, New York, NY 10016, USA
| | - Jacques M T de Bakker
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
- Department of Medical Biology, Academic Medical Center Amsterdam, Amsterdam 1105AZ, The Netherlands
| | - Aaron M Glass
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Peter J Mohler
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH 43210, USA
- Departments of Physiology & Cell Biology and Internal Medicine, Division of Cardiovascular Medicine, The Ohio State University College of Medicine Wexner Medical Center, Columbus, OH 43210, USA
| | - Steven M Taffet
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Marc A Vos
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
| | - Harold V M van Rijen
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands
| | - Mario Delmar
- Division of Cardiology, NYU School of Medicine, New York, NY 10016, USA
| | - Toon A B van Veen
- Department of Medical Physiology, Division of Heart & Lungs, University Medical Center Utrecht, Yalelaan 50, Utrecht 3584CM, The Netherlands.
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Giuliodori A, Beffagna G, Marchetto G, Fornetto C, Vanzi F, Toppo S, Facchinello N, Santimaria M, Vettori A, Rizzo S, Della Barbera M, Pilichou K, Argenton F, Thiene G, Tiso N, Basso C. Loss of cardiac Wnt/β-catenin signalling in desmoplakin-deficient AC8 zebrafish models is rescuable by genetic and pharmacological intervention. Cardiovasc Res 2019. [PMID: 29522173 DOI: 10.1093/cvr/cvy057] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Aims Arrhythmogenic cardiomyopathy (AC) is an inherited heart disease characterized by life-threatening ventricular arrhythmias and fibro-fatty replacement of the myocardium. More than 60% of AC patients show pathogenic mutations in genes encoding for desmosomal proteins. By focusing our attention on the AC8 form, linked to the junctional protein desmoplakin (DSP), we present here a zebrafish model of DSP deficiency, exploited to identify early changes of cell signalling in the cardiac region. Methods and results To obtain an embryonic model of Dsp deficiency, we first confirmed the orthologous correspondence of zebrafish Dsp genes (dspa and dspb) to the human DSP counterpart. Then, we verified their cardiac expression, at embryonic and adult stages, and subsequently we targeted them by antisense morpholino strategy, confirming specific and disruptive effects on desmosomes, like those identified in AC patients. Finally, we exploited our Dsp-deficient models for an in vivo cell signalling screen, using pathway-specific reporter transgenes. Out of nine considered, three pathways (Wnt/β-catenin, TGFβ/Smad3, and Hippo/YAP-TAZ) were significantly altered, with Wnt as the most dramatically affected. Interestingly, under persistent Dsp deficiency, Wnt signalling is rescuable both by a genetic and a pharmacological approach. Conclusion Our data point to Wnt/β-catenin as the final common pathway underlying different desmosomal AC forms and support the zebrafish as a suitable model for detecting early signalling pathways involved in the pathogenesis of DSP-associated diseases, possibly responsive to pharmacological or genetic rescue.
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Affiliation(s)
- Alice Giuliodori
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
| | - Giorgia Beffagna
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
| | - Giulia Marchetto
- European Laboratory for Non-Linear Spectroscopy, via N. Carrara, 1, Sesto Fiorentino (FI) 50019, Italy
| | - Chiara Fornetto
- European Laboratory for Non-Linear Spectroscopy, via N. Carrara, 1, Sesto Fiorentino (FI) 50019, Italy
| | - Francesco Vanzi
- European Laboratory for Non-Linear Spectroscopy, via N. Carrara, 1, Sesto Fiorentino (FI) 50019, Italy.,Department of Biology, University of Florence, via Madonna del Piano, 6, Sesto Fiorentino (FI) 50019, Italy
| | - Stefano Toppo
- Department of Molecular Medicine University of Padova, viale G. Colombo, 3, Padova 35131, Italy; and
| | - Nicola Facchinello
- Department of Biology, University of Padova, via U. Bassi, 58/B, Padova 35131, Italy
| | - Mattia Santimaria
- Department of Biology, University of Padova, via U. Bassi, 58/B, Padova 35131, Italy
| | - Andrea Vettori
- Department of Biology, University of Padova, via U. Bassi, 58/B, Padova 35131, Italy
| | - Stefania Rizzo
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
| | - Mila Della Barbera
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
| | - Kalliopi Pilichou
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
| | - Francesco Argenton
- Department of Biology, University of Padova, via U. Bassi, 58/B, Padova 35131, Italy
| | - Gaetano Thiene
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
| | - Natascia Tiso
- Department of Biology, University of Padova, via U. Bassi, 58/B, Padova 35131, Italy
| | - Cristina Basso
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, via A. Gabelli, 61, Padova 35121, Italy
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Alterations of protein expression of phospholamban, ZASP and plakoglobin in human atria in subgroups of seniors. Sci Rep 2019; 9:5610. [PMID: 30948763 PMCID: PMC6449388 DOI: 10.1038/s41598-019-42141-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 03/22/2019] [Indexed: 01/20/2023] Open
Abstract
The mature mammalian myocardium contains composite junctions (areae compositae) that comprise proteins of adherens junctions as well as desmosomes. Mutations or deficiency of many of these proteins are linked to heart failure and/or arrhythmogenic cardiomyopathy in patients. We firstly wanted to address the question whether the expression of these proteins shows an age-dependent alteration in the atrium of the human heart. Right atrial biopsies, obtained from patients undergoing routine bypass surgery for coronary heart disease were subjected to immunohistology and/or western blotting for the plaque proteins plakoglobin (γ-catenin) and plakophilin 2. Moreover, the Z-band protein cypher 1 (Cypher/ZASP) and calcium handling proteins of the sarcoplasmic reticulum (SR) like phospholamban, SERCA and calsequestrin were analyzed. We noted expression of plakoglobin, plakophilin 2 and Cypher/ZASP in these atrial preparations on western blotting and/or immunohistochemistry. There was an increase of Cypher/ZASP expression with age. The present data extend our knowledge on the expression of anchoring proteins and SR regulatory proteins in the atrium of the human heart and indicate an age-dependent variation in protein expression. It is tempting to speculate that increased expression of Cypher/ZASP may contribute to mechanical changes in the aging human myocardium.
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Yang T, Li H, Chen T, Ren H, Shi P, Chen M. LncRNA MALAT1 Depressed Chemo-Sensitivity of NSCLC Cells through Directly Functioning on miR-197-3p/p120 Catenin Axis. Mol Cells 2019; 42:270-283. [PMID: 30841025 PMCID: PMC6449715 DOI: 10.14348/molcells.2019.2364] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/23/2018] [Accepted: 11/07/2018] [Indexed: 12/20/2022] Open
Abstract
This study was aimed to explore if lncRNA MALAT1 would modify chemo-resistance of non-small cell lung cancer (NSCLC) cells by regulating miR-197-3p and p120 catenin (p120-ctn). Within this investigation, we totally recruited 326 lung cancer patients, and purchased 4 NSCLC cell lines of A549, H1299, SPC-A-1 and H460. Moreover, cisplatin, adriamycin, gefitinib and paclitaxel were arranged as chemotherapies, and half maximal inhibitory concentration (IC50) values were calculated to evaluate the chemo-resistance of the cells. Furthermore, mice models of NSCLC were also established to assess the impacts of MALAT1, miR-197-3p and p120-ctn on tumor growth. Our results indicated that MALAT1 and miR-197-3p were both over-expressed within NSCLC tissues and cells, when compared with normal tissues and cells (P < 0.05). The A549, H460, SPC-A-1 and SPC-A-1 displayed maximum resistances to cisplatin (IC50 = 15.70 μg/ml), adriamycin (IC50 = 5.58 μg/ml), gefitinib (96.82 μmol/L) and paclitaxel (141.97 nmol/L). Over-expression of MALAT1 and miR-197-3p, or under-expression of p120-ctn were associated with promoted viability and growth of the cancer cells (P < 0.05), and they could significantly strengthen the chemo-resistance of cancer cells (P < 0.05). MALAT1 Wt or p120-ctn Wt co-transfected with miR-197-3p mimic was observed with significantly reduced luciferase activity within NSCLC cells (P < 0.05). Finally, the NSCLC mice models were observed with larger tumor size and weight under circumstances of over-expressed MALAT1 and miR-197-3p, or under-expressed p120-ctn (P < 0.05). In conclusion, MALAT1 could alter chemo-resistance of NSCLC cells by targeting miR-197-3p and regulating p120-ctn expression, which might assist in improvement of chemo-therapies for NSCLC.
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MESH Headings
- Animals
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Base Sequence
- Carcinogenesis/metabolism
- Carcinogenesis/pathology
- Carcinoma, Non-Small-Cell Lung/drug therapy
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/pathology
- Catenins/metabolism
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Drug Resistance, Neoplasm/genetics
- Epithelial-Mesenchymal Transition/drug effects
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Lung Neoplasms/drug therapy
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Male
- Mice, Inbred BALB C
- Mice, Nude
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Middle Aged
- RNA, Long Noncoding/genetics
- RNA, Long Noncoding/metabolism
- Delta Catenin
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Affiliation(s)
- Tian Yang
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061,
China
| | - Hong Li
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061,
China
| | - Tianjun Chen
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061,
China
| | - Hui Ren
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061,
China
| | - Puyu Shi
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061,
China
| | - Mingwei Chen
- Division of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061,
China
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44
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Lee CM, Song DW, Ro WB, Kang MH, Park HM. Genome-wide association study of degenerative mitral valve disease in Maltese dogs. J Vet Sci 2019; 20:63-71. [PMID: 30541184 PMCID: PMC6351756 DOI: 10.4142/jvs.2019.20.1.63] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/13/2018] [Accepted: 11/30/2018] [Indexed: 12/20/2022] Open
Abstract
Genome-wide association study (GWAS) is a powerful tool for identifying the genetic causes of various diseases. This study was conducted to identify genomic variation in Maltese dog genomes associated with degenerative mitral valve disease (DMVD) development and to evaluate the association of each biological condition with DMVD in Maltese dogs. DNA was extracted from blood samples obtained from 48 Maltese dogs (32 with DMVD and 16 controls). Genome-wide single nucleotide polymorphism (SNP) genotyping was performed. The top 30 SNPs from each association of various conditions and genetic variations were mapped to their gene locations. A total of 173,662 loci were successfully genotyped, with an overall genotype completion rate of 99.41%. Quality control analysis excluded 46,610 of these SNPs. Manhattan plots were produced using allelic tests with various candidate clinical conditions. A significant peak of association was observed between mitral valve prolapse (MVP) and SNPs on chromosome 17. The present study revealed significant SNPs in several genes associated with cardiac function, including PDZ2, Armadillo repeat protein detected in velo-cardio-facial syndrome, catenin (cadherin-associated protein) alpha 3, low-density lipoprotein receptor class A domain containing protein 4, and sterile alpha motif domain containing protein 3. To our knowledge, this is the first study of a genetic predisposition to DMVD in Maltese dogs. Although only a limited number of cases were analyzed, these data could be the basis for further research on the genetic predisposition to MVP and DMVD in Maltese dogs.
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Affiliation(s)
- Chang-Min Lee
- Department of Veterinary Laboratory Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Doo-Won Song
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea
| | - Woong-Bin Ro
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea
| | - Min-Hee Kang
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea
| | - Hee-Myung Park
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea
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45
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Verhagen JM, van den Born M, Kurul S, Asimaki A, van de Laar IM, Frohn-Mulder IM, Kammeraad JA, Yap SC, Bartelings MM, van Slegtenhorst MA, von der Thüsen JH, Wessels MW. Homozygous Truncating Variant in
PKP2
Causes Hypoplastic Left Heart Syndrome. CIRCULATION-GENOMIC AND PRECISION MEDICINE 2018; 11:e002397. [DOI: 10.1161/circgen.118.002397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Judith M.A. Verhagen
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.M.A.V., M.v.d.B., S.K., I.M.B.H.v.d.L., M.A.v.S., M.W.W.)
| | - Myrthe van den Born
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.M.A.V., M.v.d.B., S.K., I.M.B.H.v.d.L., M.A.v.S., M.W.W.)
| | - Serife Kurul
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.M.A.V., M.v.d.B., S.K., I.M.B.H.v.d.L., M.A.v.S., M.W.W.)
| | - Angeliki Asimaki
- Department of Pathology, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA (A.A.)
| | - Ingrid M.B.H. van de Laar
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.M.A.V., M.v.d.B., S.K., I.M.B.H.v.d.L., M.A.v.S., M.W.W.)
| | - Ingrid M.E. Frohn-Mulder
- Department of Pediatric Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (I.M.E.F.-M., J.A.E.K.)
| | - Janneke A.E. Kammeraad
- Department of Pediatric Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (I.M.E.F.-M., J.A.E.K.)
| | - Sing C. Yap
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (S.C.Y.)
| | - Margot M. Bartelings
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden, the Netherlands (M.M.B.)
| | - Marjon A. van Slegtenhorst
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.M.A.V., M.v.d.B., S.K., I.M.B.H.v.d.L., M.A.v.S., M.W.W.)
| | - Jan H. von der Thüsen
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.H.v.d.T.)
| | - Marja W. Wessels
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands (J.M.A.V., M.v.d.B., S.K., I.M.B.H.v.d.L., M.A.v.S., M.W.W.)
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46
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Abstract
Desmosomes are junctional protein complexes that confer strong adhesive capacity to adjacent host cells. In a recent study, we showed that enteropathogenic Escherichia coli (EPEC) disrupts desmosomes, weakens cell-cell adhesion and perturbs barrier function of intestinal epithelial (C2BBe) cells. Desmosomal damage was dependent on the EPEC effector protein EspH and its inhibitory effect on Rho GTPases. EspH-mediated Rho inactivation resulted in retraction of keratin intermediate filaments and degradation of desmosomal cadherins. Immunofluorescence studies of EPEC-infected C2BBe cells revealed keratin retraction towards the nucleus coincident with significant cytoplasmic redistribution of the desmosomal cadherin desmoglein-2 (DSG2). In this addendum, we expand on how EPEC-induced keratin retraction leads to loss of DSG2 anchoring at the junctions, and show that maturity of the epithelial cell monolayer impacts the fate of desmosomes during infection.
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Affiliation(s)
- Jennifer Lising Roxas
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, USA
| | - Gayatri Vedantam
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, USA,Department of Immunobiology, University of Arizona, Tucson, AZ, USA,BIO5 Institute for Collaborative Research, University of Arizona, Tucson, AZ, USA,Southern Arizona VA Healthcare System, Tucson, AZ, USA
| | - V.K. Viswanathan
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, USA,Department of Immunobiology, University of Arizona, Tucson, AZ, USA,BIO5 Institute for Collaborative Research, University of Arizona, Tucson, AZ, USA,CONTACT V.K. Viswanathan, Ph.D. School of Animal & Comparative Biomedical Sciences, University of Arizona, 1007 E. Lowell, Building 106, Rm. 231, Tucson, AZ 85721, USA
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47
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Hoorntje ET, Te Rijdt WP, James CA, Pilichou K, Basso C, Judge DP, Bezzina CR, van Tintelen JP. Arrhythmogenic cardiomyopathy: pathology, genetics, and concepts in pathogenesis. Cardiovasc Res 2018; 113:1521-1531. [PMID: 28957532 DOI: 10.1093/cvr/cvx150] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/03/2017] [Indexed: 02/06/2023] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a rare, heritable heart disease characterized by fibro-fatty replacement of the myocardium and a high degree of electric instability. It was first thought to be a congenital disorder, but is now regarded as a dystrophic heart muscle disease that develops over time. There is no curative treatment and current treatment strategies focus on attenuating the symptoms, slowing disease progression, and preventing life-threatening arrhythmias and sudden cardiac death. Identification of mutations in genes encoding desmosomal proteins and in other genes has led to insights into the disease pathogenesis and greatly facilitated identification of family members at risk. The disease phenotype is, however, highly variable and characterized by incomplete penetrance. Although the reasons are still poorly understood, sex, endurance exercise and a gene-dosage effect seem to play a role in these phenomena. The discovery of the genes and mutations implicated in ACM has allowed animal and cellular models to be generated, enabling researchers to start unravelling it's underlying molecular mechanisms. Observations in humans and in animal models suggest that reduced cell-cell adhesion affects gap junction and ion channel remodelling at the intercalated disc, and along with impaired desmosomal function, these can lead to perturbations in signalling cascades like the Wnt/β-catenin and Hippo/YAP pathways. Perturbations of these pathways are also thought to lead to fibro-fatty replacement. A better understanding of the molecular processes may lead to new therapies that target specific pathways involved in ACM.
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Affiliation(s)
- Edgar T Hoorntje
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.,Netherlands Heart Institute, Moreelsepark 1, 3511 EP, Utrecht, The Netherlands
| | - Wouter P Te Rijdt
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Cynthia A James
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, 1800 Orleans Street, Baltimore, MD, USA
| | - Kalliopi Pilichou
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua 35121, Italy
| | - Cristina Basso
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua 35121, Italy
| | - Daniel P Judge
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, 1800 Orleans Street, Baltimore, MD, USA
| | - Connie R Bezzina
- Department of Clinical and Experimental Cardiology, Heart Centre, Academic Medical Centre, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - J Peter van Tintelen
- Netherlands Heart Institute, Moreelsepark 1, 3511 EP, Utrecht, The Netherlands.,Department of Clinical Genetics, Academic Medical Centre Amsterdam, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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48
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Sommariva E, Stadiotti I, Perrucci GL, Tondo C, Pompilio G. Cell models of arrhythmogenic cardiomyopathy: advances and opportunities. Dis Model Mech 2018; 10:823-835. [PMID: 28679668 PMCID: PMC5536909 DOI: 10.1242/dmm.029363] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Arrhythmogenic cardiomyopathy is a rare genetic disease that is mostly inherited as an autosomal dominant trait. It is associated predominantly with mutations in desmosomal genes and is characterized by the replacement of the ventricular myocardium with fibrous fatty deposits, arrhythmias and a high risk of sudden death. In vitro studies have contributed to our understanding of the pathogenic mechanisms underlying this disease, including its genetic determinants, as well as its cellular, signaling and molecular defects. Here, we review what is currently known about the pathogenesis of arrhythmogenic cardiomyopathy and focus on the in vitro models that have advanced our understanding of the disease. Finally, we assess the potential of established and innovative cell platforms for elucidating unknown aspects of this disease, and for screening new potential therapeutic agents. This appraisal of in vitro models of arrhythmogenic cardiomyopathy highlights the discoveries made about this disease and the uses of these models for future basic and therapeutic research. Summary:In vitro models of ACM provide insights into the molecular mechanisms of this disease. This reappraisal offers a comprehensive vision of past discoveries and constitutes a tool for future research.
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Affiliation(s)
- Elena Sommariva
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, via Parea 4, Milan 20138, Italy
| | - Ilaria Stadiotti
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, via Parea 4, Milan 20138, Italy
| | - Gianluca L Perrucci
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, via Parea 4, Milan 20138, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via Festa del Perdono 7, Milan 20122, Italy
| | - Claudio Tondo
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via Festa del Perdono 7, Milan 20122, Italy.,Cardiac Arrhythmia Research Center, Centro Cardiologico Monzino-IRCCS, via Parea 4, Milan 20138, Italy
| | - Giulio Pompilio
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, via Parea 4, Milan 20138, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via Festa del Perdono 7, Milan 20122, Italy
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49
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Niell N, Larriba MJ, Ferrer‐Mayorga G, Sánchez‐Pérez I, Cantero R, Real FX, del Peso L, Muñoz A, González‐Sancho JM. The human PKP2/plakophilin-2 gene is induced by Wnt/β-catenin in normal and colon cancer-associated fibroblasts. Int J Cancer 2018; 142:792-804. [PMID: 29044515 PMCID: PMC5765413 DOI: 10.1002/ijc.31104] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/24/2017] [Accepted: 10/04/2017] [Indexed: 12/15/2022]
Abstract
Colorectal cancer results from the malignant transformation of colonic epithelial cells. Stromal fibroblasts are the main component of the tumour microenvironment, and play an important role in the progression of this and other neoplasias. Wnt/β-catenin signalling is essential for colon homeostasis, but aberrant, constitutive activation of this pathway is a hallmark of colorectal cancer. Here we present the first transcriptomic study on the effect of a Wnt factor on human colonic myofibroblasts. Wnt3A regulates the expression of 1,136 genes, of which 662 are upregulated and 474 are downregulated in CCD-18Co cells. A set of genes encoding inhibitors of the Wnt/β-catenin pathway stand out among those induced by Wnt3A, which suggests that there is a feedback inhibitory mechanism. We also show that the PKP2 gene encoding the desmosomal protein Plakophilin-2 is a novel direct transcriptional target of Wnt/β-catenin in normal and colon cancer-associated fibroblasts. PKP2 is induced by β-catenin/TCF through three binding sites in the gene promoter and one additional binding site located in an enhancer 20 kb upstream from the transcription start site. Moreover, Plakophilin-2 antagonizes Wnt/β-catenin transcriptional activity in HEK-293T cells, which suggests that it may act as an intracellular inhibitor of the Wnt/β-catenin pathway. Our results demonstrate that stromal fibroblasts respond to canonical Wnt signalling and that Plakophilin-2 plays a role in the feedback control of this effect suggesting that the response to Wnt factors in the stroma may modulate Wnt activity in the tumour cells.
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Affiliation(s)
- Núria Niell
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Departamento de BioquímicaFacultad de Medicina, Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
| | - María Jesús Larriba
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ)MadridE‐28046Spain
- Instituto de Salud Carlos IIICIBER de Cáncer (CIBERONC)MadridSpain
| | - Gemma Ferrer‐Mayorga
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ)MadridE‐28046Spain
- Instituto de Salud Carlos IIICIBER de Cáncer (CIBERONC)MadridSpain
- Fundación de Investigación HM HospitalesMadridE‐28015Spain
| | - Isabel Sánchez‐Pérez
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Departamento de BioquímicaFacultad de Medicina, Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ)MadridE‐28046Spain
- Unidad asociada de Biomedicina UCLM‐CSICMadridSpain
- Instituto de Salud Carlos IIICIBER de Enfermedades Raras (CIBERER)MadridSpain
| | - Ramón Cantero
- Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ)MadridE‐28046Spain
- Department of Surgery, La Paz University HospitalColorectal UnitMadridE‐28046Spain
| | - Francisco X. Real
- Instituto de Salud Carlos IIICIBER de Cáncer (CIBERONC)MadridSpain
- Cancer Cell Biology Programme, Spanish National Cancer Research CentreEpithelial Carcinogenesis GroupMadridE‐28029Spain
- Departament de Ciències Experimentals i de la SalutUniversitat Pompeu FabraBarcelonaE‐08003Spain
| | - Luis del Peso
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Departamento de BioquímicaFacultad de Medicina, Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ)MadridE‐28046Spain
- Instituto de Salud Carlos IIICIBER de Enfermedades Respiratorias (CIBERES)MadridSpain
| | - Alberto Muñoz
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ)MadridE‐28046Spain
- Instituto de Salud Carlos IIICIBER de Cáncer (CIBERONC)MadridSpain
| | - José Manuel González‐Sancho
- Instituto de Investigaciones Biomédicas “Alberto Sols”, Consejo Superior de Investigaciones Científicas (CSIC) –Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Departamento de BioquímicaFacultad de Medicina, Universidad Autónoma de Madrid (UAM)MadridE‐28029Spain
- Instituto de Salud Carlos IIICIBER de Cáncer (CIBERONC)MadridSpain
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50
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Chen Z, Xu N, Chong D, Guan S, Jiang C, Yang Z, Li C. Geranylgeranyl pyrophosphate synthase facilitates the organization of cardiomyocytes during mid-gestation through modulating protein geranylgeranylation in mouse heart. Cardiovasc Res 2018; 114:965-978. [DOI: 10.1093/cvr/cvy042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 02/09/2018] [Indexed: 12/12/2022] Open
Affiliation(s)
- Zhong Chen
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
| | - Na Xu
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
| | - Danyang Chong
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
| | - Shan Guan
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
| | - Chen Jiang
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
| | - Zhongzhou Yang
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
| | - Chaojun Li
- Ministry of Education Key Laboratory of Model Animals for Disease Study, Model Animal Research Center and School of Medicine, Nanjing University, National Resource Center for Mutant Mice, #22 Hankou Road, Nanjing, Jiangsu 210093, People’s Republic of China
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