1
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Elsayed MEAA, Ali SM, Gardner C, Kozak I. Novel ocular observations in a child with Joubert syndrome type 6 due to pathogenic variant in TMEM67 gene. Am J Ophthalmol Case Rep 2024; 36:102091. [PMID: 39027323 PMCID: PMC11253217 DOI: 10.1016/j.ajoc.2024.102091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 05/26/2024] [Accepted: 06/01/2024] [Indexed: 07/20/2024] Open
Abstract
Purpose To describe unique ocular features in a child with Joubert syndrome type 6. Observations A 4-year-old male patient presented with right microphthalmia and non-dilating pupil and left primary position nystagmus. Brain MRI revealed a "molar tooth sign" of the midbrain and a "batwing sign" of the fourth ventricle along with large retroorbital cysts bilaterally. The diagnosis of autosomal recessive Joubert syndrome type 6 due to homozygous pathogenic variant c.725A > G p. (Asn242Ser) in TMEM67 gene was confirmed by whole exome sequencing. Left eye had nystagmus and the left optic nerve and retina showed epipapillary and subretinal fibrosis, respectively. Scleral buckle was performed for left non-rhegmatogenous retinal detachment which then improved and has been stable. Conclusions and Importance We present a rare case of JS with some unique ophthalmic features which expand clinical knowledge on this complex systemic and ocular entity.
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Affiliation(s)
| | - Syed M. Ali
- Moorfields Eye Hospitals UAE, Abu Dhabi, United Arab Emirates
- Danat Al Emarat Hospital, Abu Dhabi, United Arab Emirates
- Mohammed Bin Rashed University, Dubai, United Arab Emirates
| | - Carly Gardner
- Department of Diagnostic Radiology, Cleveland Clinic, Cleveland, OH, USA
| | - Igor Kozak
- Moorfields Eye Hospitals UAE, Abu Dhabi, United Arab Emirates
- Danat Al Emarat Hospital, Abu Dhabi, United Arab Emirates
- Mohammed Bin Rashed University, Dubai, United Arab Emirates
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2
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Zhang B, Wu Y, Zhou C, Xie J, Zhang Y, Yang X, Xiao J, Wang DW, Shan C, Zhou X, Xiang Y, Yang B. Hyperactivation of ATF4/TGF-β1 signaling contributes to the progressive cardiac fibrosis in Arrhythmogenic cardiomyopathy caused by DSG2 Variant. BMC Med 2024; 22:361. [PMID: 39227800 PMCID: PMC11373413 DOI: 10.1186/s12916-024-03593-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 08/27/2024] [Indexed: 09/05/2024] Open
Abstract
BACKGROUND Arrhythmogenic cardiomyopathy (ACM) is an inherited cardiomyopathy characterized with progressive cardiac fibrosis and heart failure. However, the exact mechanism driving the progression of cardiac fibrosis and heart failure in ACM remains elusive. This study aims to investigate the underlying mechanisms of progressive cardiac fibrosis in ACM caused by newly identified Desmoglein-2 (DSG2) variation. METHODS We identified homozygous DSG2F531C variant in a family with 8 ACM patients using whole-exome sequencing and generated Dsg2F536C knock-in mice. Neonatal and adult mouse ventricular myocytes isolated from Dsg2F536C knock-in mice were used. We performed functional, transcriptomic and mass spectrometry analyses to evaluate the mechanisms of ACM caused by DSG2F531C variant. RESULTS All eight patients with ACM were homozygous for DSG2F531C variant. Dsg2F536C/F536C mice displayed cardiac enlargement, dysfunction, and progressive cardiac fibrosis in both ventricles. Mechanistic investigations revealed that the variant DSG2-F536C protein underwent misfolding, leading to its recognition by BiP within the endoplasmic reticulum, which triggered endoplasmic reticulum stress, activated the PERK-ATF4 signaling pathway and increased ATF4 levels in cardiomyocytes. Increased ATF4 facilitated the expression of TGF-β1 in cardiomyocytes, thereby activating cardiac fibroblasts through paracrine signaling and ultimately promoting cardiac fibrosis in Dsg2F536C/F536C mice. Notably, inhibition of the PERK-ATF4 signaling attenuated progressive cardiac fibrosis and cardiac systolic dysfunction in Dsg2F536C/F536C mice. CONCLUSIONS Hyperactivation of the ATF4/TGF-β1 signaling in cardiomyocytes emerges as a novel mechanism underlying progressive cardiac fibrosis in ACM. Targeting the ATF4/TGF-β1 signaling may be a novel therapeutic target for managing ACM.
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Affiliation(s)
- Baowei Zhang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China
| | - Yizhang Wu
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China
| | - Chunjiang Zhou
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China
| | - Jiaxi Xie
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, P.R. China
| | - Youming Zhang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China
| | - Xingbo Yang
- Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China
| | - Jing Xiao
- Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China
| | - Dao Wu Wang
- State Key Laboratory of Reproductive Medicine, the Centre for Clinical Reproductive Medicine, Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, P.R. China
| | - Congjia Shan
- Model Animal Research Center, Nanjing University, Nanjing, China
| | - Xiujuan Zhou
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, P.R. China
| | - Yaozu Xiang
- Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China.
| | - Bing Yang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai, 200120, P.R. China.
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3
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Otsubo K, Sakashita N, Nishimoto Y, Sato Y, Tsutsui T, Kobayashi K, Suzuki K, Segi-Nishida E. Role of desmoplakin in supporting neuronal activity, neurogenic processes, and emotional-related behaviors in the dentate gyrus. Front Neurosci 2024; 18:1418058. [PMID: 39176381 PMCID: PMC11339875 DOI: 10.3389/fnins.2024.1418058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 07/29/2024] [Indexed: 08/24/2024] Open
Abstract
Desmoplakin (Dsp) is a component of desmosomal cell-cell junctions that interacts with the cadherin complex and cytoskeletal intermediate filaments. In addition to its function as an adhesion component, Dsp is involved in various biological processes, such as gene expression, differentiation, and migration. Dsp is specifically expressed in the hippocampal dentate gyrus (DG) in the central nervous system. However, it is unclear how Dsp impacts hippocampal function and its related behaviors. Using an adeno-associated virus knockdown system in mice, we provide evidence that Dsp in the DG maintains hippocampal functions, including neuronal activity and adult neurogenesis, and contributes to anxiolytic-like effects. Dsp protein is mostly localized in mature granule cells in the adult DG. Dsp knockdown in the DG resulted in a lowered expression of an activity-dependent transcription factor FosB, and an increased expression of mature neuronal markers, such as calbindin. In addition, the suppression of Dsp decreases serotonin responsiveness at the DG output mossy fiber synapses and alters adult neurogenic processes in the subgranular zone of the DG. Moreover, DG-specific Dsp knockdown mice showed an increase in anxiety-like behaviors. Taken together, this research uncovers an unexplored function for Dsp in the central nervous system and suggests that Dsp in the DG may function as a regulator to maintain proper neuronal activation and adult neurogenesis, and contribute to the adaptation of emotion-related behavior.
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Affiliation(s)
- Keisuke Otsubo
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
| | - Naoko Sakashita
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
| | - Yuki Nishimoto
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
| | - Yo Sato
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
| | - Takehisa Tsutsui
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
| | - Katsunori Kobayashi
- Department of Pharmacology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Kanzo Suzuki
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
| | - Eri Segi-Nishida
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Tokyo, Japan
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4
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Liu H, Xu X, Li J, Liu Z, Xiong Y, Yue M, Liu P. Overexpression of Plakophilin2 Mitigates Capillary Leak Syndrome in Severe Acute Pancreatitis by Activating the p38/MAPK Signaling Pathway. J Inflamm Res 2024; 17:4129-4149. [PMID: 38952564 PMCID: PMC11215460 DOI: 10.2147/jir.s459449] [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: 01/15/2024] [Accepted: 06/18/2024] [Indexed: 07/03/2024] Open
Abstract
Purpose Capillary leak syndrome (CLS) is an intermediary phase between severe acute pancreatitis (SAP) and multiple organ failure. As a result, CLS is of clinical importance for enhancing the prognosis of SAP. Plakophilin2 (PKP2), an essential constituent of desmosomes, plays a critical role in promoting connections between epithelial cells. However, the function and mechanism of PKP2 in CLS in SAP are not clear at present. Methods We detected the expression of PKP2 in mice pancreatic tissue by transcriptome sequencing and bioinformatics analysis. PKP2 was overexpressed and knocked down to assess its influence on cell permeability, the cytoskeleton, tight junction molecules, cell adhesion junction molecules, and associated pathways. Results PKP2 expression was increased in the pancreatic tissues of SAP mice and human umbilical vein endothelial cells (HUVECs) after lipopolysaccharide (LPS) stimulation. PKP2 overexpression not only reduced endothelial cell permeability but also improved cytoskeleton relaxation in response to acute inflammatory stimulation. PKP2 overexpression increased levels of ZO-1, occludin, claudin1, β-catenin, and connexin43. The overexpression of PKP2 in LPS-induced HUVECs counteracted the inhibitory effect of SB203580 (a p38/MAPK signaling pathway inhibitor) on the p38/MAPK signaling pathway, thereby restoring the levels of ZO-1, β-catenin, and claudin1. Additionally, PKP2 suppression eliminated the enhanced levels of ZO-1, β-catenin, occludin, and claudin1 induced by dehydrocorydaline. We predicted that the upstream transcription factor PPARγregulates PKP2 expression, and our findings demonstrate that the PPARγactivator rosiglitazone significantly upregulates PKP2, whereas its antagonist GW9662 down-regulates PKP2. Administration of rosiglitazone significantly reduced the increase in HUVECs permeability stimulated by LPS. Conversely, PKP2 overexpression counteracted the GW9662-induced reduction in ZO-1, phosphorylated p38/p38, and claudin1. Conclusion The activation of the p38/MAPK signaling pathway by PKP2 mitigates CLS in SAP. PPARγactivator rosiglitazone can up-regulate PKP2. Overall, directing efforts toward PKP2 could prove to be a feasible treatment approach for effectively managing CLS in SAP.
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Affiliation(s)
- Hui Liu
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
- Gastroenterology Institute of Jiangxi Province, Nanchang, People’s Republic of China
| | - Xuan Xu
- Department of Gastroenterology, The People’s Hospital of Longhua, Shenzhen, People’s Republic of China
| | - Ji Li
- Department of Gastroenterology, The People’s Hospital of Longhua, Shenzhen, People’s Republic of China
| | - Zheyu Liu
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
| | - Yuwen Xiong
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
| | - Mengli Yue
- Affiliated Longhua People’s Hospital, The Third School of Clinical Medicine, Southern Medical University, Shenzhen, People’s Republic of China
| | - Pi Liu
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
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5
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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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6
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Selgrade DF, Fullenkamp DE, Chychula IA, Li B, Dellefave-Castillo L, Dubash AD, Ohiri J, Monroe TO, Blancard M, Tomar G, Holgren C, Burridge PW, George AL, Demonbreun AR, Puckelwartz MJ, George SA, Efimov IR, Green KJ, McNally EM. Susceptibility to innate immune activation in genetically mediated myocarditis. J Clin Invest 2024; 134:e180254. [PMID: 38768074 PMCID: PMC11213508 DOI: 10.1172/jci180254] [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: 02/12/2024] [Accepted: 05/07/2024] [Indexed: 05/22/2024] Open
Abstract
Myocarditis is clinically characterized by chest pain, arrhythmias, and heart failure, and treatment is often supportive. Mutations in DSP, a gene encoding the desmosomal protein desmoplakin, have been increasingly implicated in myocarditis. To model DSP-associated myocarditis and assess the role of innate immunity, we generated engineered heart tissues (EHTs) using human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from patients with heterozygous DSP truncating variants (DSPtvs) and a gene-edited homozygous deletion cell line (DSP-/-). At baseline, DSP-/- EHTs displayed a transcriptomic signature of innate immune activation, which was mirrored by cytokine release. Importantly, DSP-/- EHTs were hypersensitive to Toll-like receptor (TLR) stimulation, demonstrating more contractile dysfunction compared with isogenic controls. Relative to DSP-/- EHTs, heterozygous DSPtv EHTs had less functional impairment. DSPtv EHTs displayed heightened sensitivity to TLR stimulation, and when subjected to strain, DSPtv EHTs developed functional deficits, indicating reduced contractile reserve compared with healthy controls. Colchicine or NF-κB inhibitors improved strain-induced force deficits in DSPtv EHTs. Genomic correction of DSP p.R1951X using adenine base editing reduced inflammatory biomarker release from EHTs. Thus, EHTs replicate electrical and contractile phenotypes seen in human myocarditis, implicating cytokine release as a key part of the myogenic susceptibility to inflammation. The heightened innate immune activation and sensitivity are targets for clinical intervention.
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Affiliation(s)
| | - Dominic E. Fullenkamp
- Center for Genetic Medicine and
- Bluhm Cardiovascular Institute, Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | | | - Binjie Li
- Department of Biomedical Engineering, Northwestern University, Chicago, Illinois, USA
| | - Lisa Dellefave-Castillo
- Center for Genetic Medicine and
- Bluhm Cardiovascular Institute, Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Adi D. Dubash
- Department of Biology, Furman University, Greenville, South Carolina, USA
- Department of Pathology
| | | | | | | | | | | | | | | | | | | | - Sharon A. George
- Department of Biomedical Engineering, Northwestern University, Chicago, Illinois, USA
| | - Igor R. Efimov
- Department of Biomedical Engineering, Northwestern University, Chicago, Illinois, USA
| | - Kathleen J. Green
- Department of Pathology
- Department of Dermatology, and
- R.H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Elizabeth M. McNally
- Center for Genetic Medicine and
- Bluhm Cardiovascular Institute, Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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7
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Wu I, Zeng A, Greer-Short A, Aycinena JA, Tefera AE, Shenwai R, Farshidfar F, Van Pell M, Xu E, Reid C, Rodriguez N, Lim B, Chung TW, Woods J, Scott A, Jones S, Dee-Hoskins C, Gutierrez CG, Madariaga J, Robinson K, Hatter Y, Butler R, Steltzer S, Ho J, Priest JR, Song X, Jing F, Green K, Ivey KN, Hoey T, Yang J, Yang ZJ. AAV9:PKP2 improves heart function and survival in a Pkp2-deficient mouse model of arrhythmogenic right ventricular cardiomyopathy. COMMUNICATIONS MEDICINE 2024; 4:38. [PMID: 38499690 PMCID: PMC10948840 DOI: 10.1038/s43856-024-00450-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 02/01/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a familial cardiac disease associated with ventricular arrhythmias and an increased risk of sudden cardiac death. Currently, there are no approved treatments that address the underlying genetic cause of this disease, representing a significant unmet need. Mutations in Plakophilin-2 (PKP2), encoding a desmosomal protein, account for approximately 40% of ARVC cases and result in reduced gene expression. METHODS Our goal is to examine the feasibility and the efficacy of adeno-associated virus 9 (AAV9)-mediated restoration of PKP2 expression in a cardiac specific knock-out mouse model of Pkp2. RESULTS We show that a single dose of AAV9:PKP2 gene delivery prevents disease development before the onset of cardiomyopathy and attenuates disease progression after overt cardiomyopathy. Restoration of PKP2 expression leads to a significant extension of lifespan by restoring cellular structures of desmosomes and gap junctions, preventing or halting decline in left ventricular ejection fraction, preventing or reversing dilation of the right ventricle, ameliorating ventricular arrhythmia event frequency and severity, and preventing adverse fibrotic remodeling. RNA sequencing analyses show that restoration of PKP2 expression leads to highly coordinated and durable correction of PKP2-associated transcriptional networks beyond desmosomes, revealing a broad spectrum of biological perturbances behind ARVC disease etiology. CONCLUSIONS We identify fundamental mechanisms of PKP2-associated ARVC beyond disruption of desmosome function. The observed PKP2 dose-function relationship indicates that cardiac-selective AAV9:PKP2 gene therapy may be a promising therapeutic approach to treat ARVC patients with PKP2 mutations.
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Affiliation(s)
- Iris Wu
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
- University of Michigan, Department of Molecular and Integrative Physiology, Ann Arbor, MI, 48109-5622, USA
| | - Aliya Zeng
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | | | | | - Anley E Tefera
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Reva Shenwai
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | | | | | - Emma Xu
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Chris Reid
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | | | - Beatriz Lim
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Tae Won Chung
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Joseph Woods
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Aquilla Scott
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Samantha Jones
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | | | | | | | - Kevin Robinson
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Yolanda Hatter
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Renee Butler
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | | | - Jaclyn Ho
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - James R Priest
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Xiaomei Song
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Frank Jing
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Kristina Green
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Kathryn N Ivey
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Timothy Hoey
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
| | - Jin Yang
- Tenaya Therapeutics, South San Francisco, CA, 94080, USA
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8
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Agoston-Coldea L, Negru A. Myocardial fibrosis in right heart dysfunction. Adv Clin Chem 2024; 119:71-116. [PMID: 38514212 DOI: 10.1016/bs.acc.2024.02.005] [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] [Indexed: 03/23/2024]
Abstract
Cardiac fibrosis, associated with right heart dysfunction, results in significant morbidity and mortality. Stimulated by various cellular and humoral stimuli, cardiac fibroblasts, macrophages, CD4+ and CD8+ T cells, mast and endothelial cells promote fibrogenesis directly and indirectly by synthesizing numerous profibrotic factors. Several systems, including the transforming growth factor-beta and the renin-angiotensin system, produce type I and III collagen, fibronectin and α-smooth muscle actin, thus modifying the extracellular matrix. Although magnetic resonance imaging with gadolinium enhancement remains the gold standard, the use of circulating biomarkers represents an inexpensive and attractive means to facilitate detection and monitor cardiovascular fibrosis. This review explores the use of protein and nucleic acid (miRNAs) markers to better understand underlying pathophysiology as well as their role in the development of therapeutics to inhibit and potentially reverse cardiac fibrosis.
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Affiliation(s)
- Lucia Agoston-Coldea
- Department of Internal Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
| | - Andra Negru
- Department of Internal Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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9
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Engel M, Shiel EA, Chelko SP. Basic and translational mechanisms in inflammatory arrhythmogenic cardiomyopathy. Int J Cardiol 2024; 397:131602. [PMID: 37979796 DOI: 10.1016/j.ijcard.2023.131602] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/24/2023] [Accepted: 11/14/2023] [Indexed: 11/20/2023]
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a familial, nonischemic heart disease typically inherited via an autosomal dominant pattern (Nava et al., [1]; Wlodarska et al., [2]). Often affecting the young and athletes, early diagnosis of ACM can be complicated as incomplete penetrance with variable expressivity are common characteristics (Wlodarska et al., [2]; Corrado et al., [3]). That said, of the five desmosomal genes implicated in ACM, pathogenic variants in desmocollin-2 (DSC2) and desmoglein-2 (DSG2) have been discovered in both an autosomal-recessive and autosomal-dominant pattern (Wong et al., [4]; Qadri et al., [5]; Chen et al., [6]). Originally known as arrhythmogenic right ventricular dysplasia (ARVD), due to its RV prevalence and manifesting in the young, the disease was first described in 1736 by Giovanni Maria Lancisi in his book "De Motu Cordis et Aneurysmatibus" (Lancisi [7]). However, the first comprehensive clinical description and recognition of this dreadful disease was by Guy Fontaine and Frank Marcus in 1982 (Marcus et al., [8]). These two esteemed pathologists evaluated twenty-two (n = 22/24) young adult patients with recurrent ventricular tachycardia (VT) and RV dysplasia (Marcus et al., [8]). Initially, ARVD was thought to be the result of partial or complete congenital absence of ventricular myocardium during embryonic development (Nava et al., [9]). However, further research into the clinical and pathological manifestations revealed acquired progressive fibrofatty replacement of the myocardium (McKenna et al., [10]); and, in 1995, ARVD was classified as a primary cardiomyopathy by the World Health Organization (Richardson et al., [11]). Thus, now classifying ACM as a cardiomyopathy (i.e., ARVC) rather than a dysplasia (i.e., ARVD). Even more recently, ARVC has shifted from its recognition as a primarily RV disease (i.e., ARVC) to include left-dominant (i.e., ALVC) and biventricular subtypes (i.e., ACM) as well (Saguner et al., [12]), prompting the use of the more general term arrhythmogenic cardiomyopathy (ACM). This review aims to discuss pathogenesis, clinical and pathological phenotypes, basic and translational research on the role of inflammation, and clinical trials aimed to prevent disease onset and progression.
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Affiliation(s)
- Morgan Engel
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL, United States of America; Department of Medicine, University of Central Florida College of Medicine, Orlando, FL, United States of America
| | - Emily A Shiel
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL, United States of America
| | - Stephen P Chelko
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL, United States of America; Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America.
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10
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Zhang T, Ma R, Li Z, Liu T, Yang S, Li N, Wang D. Nur77 alleviates cardiac fibrosis by upregulating GSK-3β transcription during aging. Eur J Pharmacol 2024; 965:176290. [PMID: 38158109 DOI: 10.1016/j.ejphar.2023.176290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 11/23/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Cardiac fibrosis is associated with aging, for which no targeted therapies are available. With aging, the levels of nerve growth factor-induced gene B (Nur77) are reduced during cardiac remodelling; however, its role in cardiac fibrosis in aging remains unclear. Here, we found that Nur77 knockout increased cardiac structure abnormalities, systolic and diastolic dysfunction, cardiac hypertrophy, and fibrotic marker expression in 15-month-old mice. Furthermore, Nur77 deficiency induced collagen type I (Col-1) and α-smooth muscle actin overproduction in transforming growth factor beta (TGF-β) treated H9c2 cells, whereas Nur77 overexpression attenuated this effect. Nur77 deficiency in vivo and in vitro downregulated glycogen synthase kinase (GSK)-3β expression and increased β-catenin activity, while its overexpression increased GSK-3β expression. GSK-3β knockdown counteracted the anti-fibrotic effect of Nur77 on TGF-β-treated H9c2 cells. Chromatin immunoprecipitation and luciferase reporter assay results suggested GSK-3β as the direct target of Nur77. Our findings suggest that Nur77 directly initiates GSK-3β transcription and age-related cardiac fibrosis partly through the GSK-3β/β-catenin pathway. This study proposes a novel mechanism for Nur77 regulating cardiac fibrosis and suggests Nur77 as a target for the prevention and treatment of aging-associated cardiac fibrosis and heart failure.
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Affiliation(s)
- Tiantian Zhang
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Ruzhe Ma
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Zhichi Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Tingting Liu
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Sijia Yang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Na Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Difei Wang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.
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11
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Kyriakopoulou E, Versteeg D, de Ruiter H, Perini I, Seibertz F, Döring Y, Zentilin L, Tsui H, van Kampen SJ, Tiburcy M, Meyer T, Voigt N, Tintelen VJP, Zimmermann WH, Giacca M, van Rooij E. Therapeutic efficacy of AAV-mediated restoration of PKP2 in arrhythmogenic cardiomyopathy. NATURE CARDIOVASCULAR RESEARCH 2023; 2:1262-1276. [PMID: 38665939 PMCID: PMC11041734 DOI: 10.1038/s44161-023-00378-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 10/27/2023] [Indexed: 04/28/2024]
Abstract
Arrhythmogenic cardiomyopathy is a severe cardiac disorder characterized by lethal arrhythmias and sudden cardiac death, with currently no effective treatment. Plakophilin 2 (PKP2) is the most frequently affected gene. Here we show that adeno-associated virus (AAV)-mediated delivery of PKP2 in PKP2c.2013delC/WT induced pluripotent stem cell-derived cardiomyocytes restored not only cardiac PKP2 levels but also the levels of other junctional proteins, found to be decreased in response to the mutation. PKP2 restoration improved sodium conduction, indicating rescue of the arrhythmic substrate in PKP2 mutant induced pluripotent stem cell-derived cardiomyocytes. Additionally, it enhanced contractile function and normalized contraction kinetics in PKP2 mutant engineered human myocardium. Recovery of desmosomal integrity and cardiac function was corroborated in vivo, by treating heterozygous Pkp2c.1755delA knock-in mice. Long-term treatment with AAV9-PKP2 prevented cardiac dysfunction in 12-month-old Pkp2c.1755delA/WT mice, without affecting wild-type mice. These findings encourage clinical exploration of PKP2 gene therapy for patients with PKP2 haploinsufficiency.
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Affiliation(s)
- Eirini Kyriakopoulou
- Hubrecht Institute-KNAW and Utrecht University Medical Center, Utrecht, the Netherlands
| | - Danielle Versteeg
- Hubrecht Institute-KNAW and Utrecht University Medical Center, Utrecht, the Netherlands
| | - Hesther de Ruiter
- Hubrecht Institute-KNAW and Utrecht University Medical Center, Utrecht, the Netherlands
| | - Ilaria Perini
- Hubrecht Institute-KNAW and Utrecht University Medical Center, Utrecht, the Netherlands
| | - Fitzwilliam Seibertz
- Institute of Pharmacology and Toxicology, University Medical Center Gottingen (UMG), Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), partner site Göttingen, Göttingen, Germany
- Cluster of Excellence ‘Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells’ (MBExC), University of Göttingen, Göttingen, Germany
- Nanion Technologies GmbH, Munich, Germany
| | - Yannic Döring
- Institute of Pharmacology and Toxicology, University Medical Center Gottingen (UMG), Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), partner site Göttingen, Göttingen, Germany
| | - Lorena Zentilin
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Hoyee Tsui
- Hubrecht Institute-KNAW and Utrecht University Medical Center, Utrecht, the Netherlands
| | | | - Malte Tiburcy
- Institute of Pharmacology and Toxicology, University Medical Center Gottingen (UMG), Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), partner site Göttingen, Göttingen, Germany
| | - Tim Meyer
- Institute of Pharmacology and Toxicology, University Medical Center Gottingen (UMG), Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), partner site Göttingen, Göttingen, Germany
| | - Niels Voigt
- Institute of Pharmacology and Toxicology, University Medical Center Gottingen (UMG), Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), partner site Göttingen, Göttingen, Germany
- Cluster of Excellence ‘Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells’ (MBExC), University of Göttingen, Göttingen, Germany
| | | | - Wolfram H. Zimmermann
- Institute of Pharmacology and Toxicology, University Medical Center Gottingen (UMG), Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), partner site Göttingen, Göttingen, Germany
- Cluster of Excellence ‘Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells’ (MBExC), University of Göttingen, Göttingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), Göttingen, Germany
| | - Mauro Giacca
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
- British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine & Sciences, King’s College London, London, UK
| | - Eva van Rooij
- Hubrecht Institute-KNAW and Utrecht University Medical Center, Utrecht, the Netherlands
- Department of Cardiology, University Medical Center Utrecht, Utrecht, the Netherlands
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12
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Zhang B, Wu Y, Yang X, Xiang Y, Yang B. Molecular insight into arrhythmogenic cardiomyopathy caused by DSG2 mutations. Biomed Pharmacother 2023; 167:115448. [PMID: 37696084 DOI: 10.1016/j.biopha.2023.115448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/13/2023] Open
Abstract
Mutant desmoglein 2 (DSG2) is the second most common pathogenic gene in arrhythmogenic cardiomyopathy (ACM), accounting for approximately 10% of ACM cases. In addition to common clinical and pathological features, ACM caused by mutant DSG2 has specific characteristics, manifesting as left ventricle involvement and a high risk of heart failure. Pathological studies have shown extensive cardiomyocyte necrosis, infiltration of immune cells, and fibrofatty replacement in both ventricles, as well as abnormal desmosome structures in the hearts of humans and mice with mutant DSG2-related ACM. Although desmosome dysfunction is a common pathway in the pathogenesis of mutant DSG2-related ACM, the mechanisms underlying this dysfunction vary among mutations. Desmosome dysfunction induces cardiomyocyte injury, plakoglobin dislocation, and gap junction dysfunction, all of which contribute to the initiation and progression of ACM. Additionally, dysregulated inflammation, overactivation of transforming growth factor-beta-1 signaling and endoplasmic reticulum stress, and cardiac metabolic dysfunction contribute to the pathogenesis of ACM caused by mutant DSG2. These features demonstrate that patients with mutant DSG2-related ACM should be managed individually and precisely based on the genotype and phenotype. Further studies are needed to investigate the underlying mechanisms and to identify novel therapies to reverse or attenuate the progression of ACM caused by mutant DSG2.
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Affiliation(s)
- Baowei Zhang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai 200120, PR China
| | - Yizhang Wu
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai 200120, PR China
| | - Xingbo Yang
- Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 150 Jimo Road, Pudong, Shanghai 200120, PR China
| | - Yaozu Xiang
- Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 150 Jimo Road, Pudong, Shanghai 200120, PR China.
| | - Bing Yang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Pudong, Shanghai 200120, PR China.
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13
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Chua CJ, Morrissette-McAlmon J, Tung L, Boheler KR. Understanding Arrhythmogenic Cardiomyopathy: Advances through the Use of Human Pluripotent Stem Cell Models. Genes (Basel) 2023; 14:1864. [PMID: 37895213 PMCID: PMC10606441 DOI: 10.3390/genes14101864] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/11/2023] [Accepted: 09/16/2023] [Indexed: 10/29/2023] Open
Abstract
Cardiomyopathies (CMPs) represent a significant healthcare burden and are a major cause of heart failure leading to premature death. Several CMPs are now recognized to have a strong genetic basis, including arrhythmogenic cardiomyopathy (ACM), which predisposes patients to arrhythmic episodes. Variants in one of the five genes (PKP2, JUP, DSC2, DSG2, and DSP) encoding proteins of the desmosome are known to cause a subset of ACM, which we classify as desmosome-related ACM (dACM). Phenotypically, this disease may lead to sudden cardiac death in young athletes and, during late stages, is often accompanied by myocardial fibrofatty infiltrates. While the pathogenicity of the desmosome genes has been well established through animal studies and limited supplies of primary human cells, these systems have drawbacks that limit their utility and relevance to understanding human disease. Human induced pluripotent stem cells (hiPSCs) have emerged as a powerful tool for modeling ACM in vitro that can overcome these challenges, as they represent a reproducible and scalable source of cardiomyocytes (CMs) that recapitulate patient phenotypes. In this review, we provide an overview of dACM, summarize findings in other model systems linking desmosome proteins with this disease, and provide an up-to-date summary of the work that has been conducted in hiPSC-cardiomyocyte (hiPSC-CM) models of dACM. In the context of the hiPSC-CM model system, we highlight novel findings that have contributed to our understanding of disease and enumerate the limitations, prospects, and directions for research to consider towards future progress.
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Affiliation(s)
- Christianne J. Chua
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (C.J.C.); (J.M.-M.); (L.T.)
| | - Justin Morrissette-McAlmon
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (C.J.C.); (J.M.-M.); (L.T.)
| | - Leslie Tung
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (C.J.C.); (J.M.-M.); (L.T.)
| | - Kenneth R. Boheler
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (C.J.C.); (J.M.-M.); (L.T.)
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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14
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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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15
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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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16
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Vielmuth F, Radeva MY, Yeruva S, Sigmund AM, Waschke J. cAMP: A master regulator of cadherin-mediated binding in endothelium, epithelium and myocardium. Acta Physiol (Oxf) 2023; 238:e14006. [PMID: 37243909 DOI: 10.1111/apha.14006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/05/2023] [Accepted: 05/22/2023] [Indexed: 05/29/2023]
Abstract
Regulation of cadherin-mediated cell adhesion is crucial not only for maintaining tissue integrity and barrier function in the endothelium and epithelium but also for electromechanical coupling within the myocardium. Therefore, loss of cadherin-mediated adhesion causes various disorders, including vascular inflammation and desmosome-related diseases such as the autoimmune blistering skin dermatosis pemphigus and arrhythmogenic cardiomyopathy. Mechanisms regulating cadherin-mediated binding contribute to the pathogenesis of diseases and may also be used as therapeutic targets. Over the last 30 years, cyclic adenosine 3',5'-monophosphate (cAMP) has emerged as one of the master regulators of cell adhesion in endothelium and, more recently, also in epithelial cells as well as in cardiomyocytes. A broad spectrum of experimental models from vascular physiology and cell biology applied by different generations of researchers provided evidence that not only cadherins of endothelial adherens junctions (AJ) but also desmosomal contacts in keratinocytes and the cardiomyocyte intercalated discs are central targets in this scenario. The molecular mechanisms involve protein kinase A- and exchange protein directly activated by cAMP-mediated regulation of Rho family GTPases and S665 phosphorylation of the AJ and desmosome adaptor protein plakoglobin. In line with this, phosphodiesterase 4 inhibitors such as apremilast have been proposed as a therapeutic strategy to stabilize cadherin-mediated adhesion in pemphigus and may also be effective to treat other disorders where cadherin-mediated binding is compromised.
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Affiliation(s)
- Franziska Vielmuth
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Mariya Y Radeva
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Sunil Yeruva
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Anna M Sigmund
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Jens Waschke
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
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17
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Guadalupi G, Contini C, Iavarone F, Castagnola M, Messana I, Faa G, Onali S, Chessa L, Vitorino R, Amado F, Diaz G, Manconi B, Cabras T, Olianas A. Combined Salivary Proteome Profiling and Machine Learning Analysis Provides Insight into Molecular Signature for Autoimmune Liver Diseases Classification. Int J Mol Sci 2023; 24:12207. [PMID: 37569584 PMCID: PMC10418803 DOI: 10.3390/ijms241512207] [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: 06/15/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
Autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) are autoimmune liver diseases that target the liver and have a wide spectrum of presentation. A global overview of quantitative variations on the salivary proteome in presence of these two pathologies is investigated in this study. The acid-insoluble salivary fraction of AIH and PBC patients, and healthy controls (HCs), was analyzed using a gel-based bottom-up proteomic approach combined with a robust machine learning statistical analysis of the dataset. The abundance of Arginase, Junction plakoglobin, Desmoplakin, Hexokinase-3 and Desmocollin-1 decreased, while that of BPI fold-containing family A member 2 increased in AIHp compared to HCs; the abundance of Gelsolin, CD14, Tumor-associated calcium signal transducer 2, Clusterin, Heterogeneous nuclear ribonucleoproteins A2/B1, Cofilin-1 and BPI fold-containing family B member 2 increased in PBCp compared to HCs. The abundance of Hornerin decreased in both AIHp and PBCp with respect to HCs and provided an area under the ROC curve of 0.939. Machine learning analysis confirmed the feasibility of the salivary proteome to discriminate groups of subjects based on AIH or PBC occurrence as previously suggested by our group. The topology-based functional enrichment analysis performed on these potential salivary biomarkers highlights an enrichment of terms mostly related to the immune system, but also with a strong involvement in liver fibrosis process and with antimicrobial activity.
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Affiliation(s)
- Giulia Guadalupi
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, 09124 Cagliari, Italy; (G.G.); (C.C.); (T.C.); (A.O.)
| | - Cristina Contini
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, 09124 Cagliari, Italy; (G.G.); (C.C.); (T.C.); (A.O.)
| | - Federica Iavarone
- Fondazione Policlinico Universitario IRCCS “A. Gemelli”, 00168 Rome, Italy;
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Massimo Castagnola
- Laboratorio di Proteomica, Centro Europeo di Ricerca sul Cervello, IRCCS Fondazione Santa Lucia, 00168 Rome, Italy;
| | - Irene Messana
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche, 00168 Rome, Italy;
| | - Gavino Faa
- Division of Pathology, Department of Medical Sciences and Public Health, University Hospital, 09124 Cagliari, Italy;
| | - Simona Onali
- Liver Unit, University Hospital of Cagliari, 09124 Cagliari, Italy; (S.O.); (L.C.)
| | - Luchino Chessa
- Liver Unit, University Hospital of Cagliari, 09124 Cagliari, Italy; (S.O.); (L.C.)
| | - Rui Vitorino
- iBiMED, Department of Medical Science, University of Aveiro, 3810-193 Aveiro, Portugal;
- UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, 4200-319 Porto, Portugal
| | - Francisco Amado
- LAQV/REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Giacomo Diaz
- Dipartimento di Scienze Biomediche, Università di Cagliari, 09124 Cagliari, Italy;
| | - Barbara Manconi
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, 09124 Cagliari, Italy; (G.G.); (C.C.); (T.C.); (A.O.)
| | - Tiziana Cabras
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, 09124 Cagliari, Italy; (G.G.); (C.C.); (T.C.); (A.O.)
| | - Alessandra Olianas
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, 09124 Cagliari, Italy; (G.G.); (C.C.); (T.C.); (A.O.)
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18
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Nielsen MS, van Opbergen CJM, van Veen TAB, Delmar M. The intercalated disc: a unique organelle for electromechanical synchrony in cardiomyocytes. Physiol Rev 2023; 103:2271-2319. [PMID: 36731030 PMCID: PMC10191137 DOI: 10.1152/physrev.00021.2022] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 01/24/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
The intercalated disc (ID) is a highly specialized structure that connects cardiomyocytes via mechanical and electrical junctions. Although described in some detail by light microscopy in the 19th century, it was in 1966 that electron microscopy images showed that the ID represented apposing cell borders and provided detailed insight into the complex ID nanostructure. Since then, much has been learned about the ID and its molecular composition, and it has become evident that a large number of proteins, not all of them involved in direct cell-to-cell coupling via mechanical or gap junctions, reside at the ID. Furthermore, an increasing number of functional interactions between ID components are emerging, leading to the concept that the ID is not the sum of isolated molecular silos but an interacting molecular complex, an "organelle" where components work in concert to bring about electrical and mechanical synchrony. The aim of the present review is to give a short historical account of the ID's discovery and an updated overview of its composition and organization, followed by a discussion of the physiological implications of the ID architecture and the local intermolecular interactions. The latter will focus on both the importance of normal conduction of cardiac action potentials as well as the impact on the pathophysiology of arrhythmias.
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Affiliation(s)
- Morten S Nielsen
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Chantal J M van Opbergen
- The Leon Charney Division of Cardiology, New York University Grossmann School of Medicine, New York, New York, United States
| | - Toon A B van Veen
- Department of Medical Physiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Mario Delmar
- The Leon Charney Division of Cardiology, New York University Grossmann School of Medicine, New York, New York, United States
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19
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Honarbakhsh S, Protonotarios A, Monkhouse C, Hunter RJ, Elliott PM, Lambiase PD. Right ventricular function is a predictor for sustained ventricular tachycardia requiring anti-tachycardic pacing in arrhythmogenic ventricular cardiomyopathy: insight into transvenous vs. subcutaneous implantable cardioverter defibrillator insertion. Europace 2023; 25:euad073. [PMID: 37213071 PMCID: PMC10202497 DOI: 10.1093/europace/euad073] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 02/14/2023] [Indexed: 05/23/2023] Open
Abstract
AIMS Arrhythmogenic right ventricular cardiomyopathy (ARVC) patients develop ventricular arrhythmias (VAs) responsive to anti-tachycardia pacing (ATP). However, VA episodes have not been characterized in accordance with the device therapy, and with the emergence of the subcutaneous implantable cardioverter defibrillator (S-ICD), the appropriate device prescription in ARVC remains unclear. Study aim was to characterize VA events in ARVC patients during follow-up in accordance with device therapy and elicit if certain parameters are predictive of specific VA events. METHODS AND RESULTS This was a retrospective single-centre study utilizing prospectively collated registry data of ARVC patients with ICDs. Forty-six patients were included [54.0 ± 12.1 years old and 20 (43.5%) secondary prevention devices]. During a follow-up of 12.1 ± 6.9 years, 31 (67.4%) patients had VA events [n = 2, 6.5% ventricular fibrillation (VF), n = 14], 45.2% VT falling in VF zone resulting in ICD shock(s), n = 10, 32.3% VT resulting in ATP, and n = 5, 16.1% patients had both VT resulting in ATP and ICD shock(s). Lead failure rates were high (11/46, 23.9%). ATP was successful in 34.5% of patients. Severely impaired right ventricular (RV) function was an independent predictor of VT resulting in ATP (hazard ratio 16.80, 95% confidence interval 3.74-75.2; P < 0.001) with a high predictive accuracy (area under the curve 0.88, 95%CI 0.76-1.00; P < 0.001). CONCLUSION VA event rates are high in ARVC patients with a majority having VT falling in the VF zone resulting in ICD shock(s). S-ICDs could be of benefit in most patients with ARVC with the absence of severely impaired RV function which has the potential to avoid consequences of the high burden of lead failure.
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Affiliation(s)
- Shohreh Honarbakhsh
- The Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS trust, West Smithfield, London WC1 8BE, UK
- William Harvey Research Institute, Queen Mary’s University of London, London, E1, UK
| | - Alexander Protonotarios
- The Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS trust, West Smithfield, London WC1 8BE, UK
| | - Christopher Monkhouse
- The Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS trust, West Smithfield, London WC1 8BE, UK
| | - Ross J Hunter
- The Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS trust, West Smithfield, London WC1 8BE, UK
| | - Perry M Elliott
- The Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS trust, West Smithfield, London WC1 8BE, UK
| | - Pier D Lambiase
- The Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS trust, West Smithfield, London WC1 8BE, UK
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20
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Zhang P, Bai L, Tong Y, Guo S, Lu W, Yuan Y, Wang W, Jin Y, Gao P, Liu J. CIRP attenuates acute kidney injury after hypothermic cardiovascular surgery by inhibiting PHD3/HIF-1α-mediated ROS-TGF-β1/p38 MAPK activation and mitochondrial apoptotic pathways. Mol Med 2023; 29:61. [PMID: 37127576 PMCID: PMC10152741 DOI: 10.1186/s10020-023-00655-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 04/18/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND The ischemia-reperfusion (IR) environment during deep hypothermic circulatory arrest (DHCA) cardiovascular surgery is a major cause of acute kidney injury (AKI), which lacks preventive measure and treatment. It was reported that cold inducible RNA-binding protein (CIRP) can be induced under hypoxic and hypothermic stress and may have a protective effect on multiple organs. The purpose of this study was to investigate whether CIRP could exert renoprotective effect during hypothermic IR and the potential mechanisms. METHODS Utilizing RNA-sequencing, we compared the differences in gene expression between Cirp knockout rats and wild-type rats after DHCA and screened the possible mechanisms. Then, we established the hypothermic oxygen-glucose deprivation (OGD) model using HK-2 cells transfected with siRNA to verify the downstream pathways and explore potential pharmacological approach. The effects of CIRP and enarodustat (JTZ-951) on renal IR injury (IRI) were investigated in vivo and in vitro using multiple levels of pathological and molecular biological experiments. RESULTS We discovered that Cirp knockout significantly upregulated rat Phd3 expression, which is the key regulator of HIF-1α, thereby inhibiting HIF-1α after DHCA. In addition, deletion of Cirp in rat model promoted apoptosis and aggravated renal injury by reactive oxygen species (ROS) accumulation and significant activation of the TGF-β1/p38 MAPK inflammatory pathway. Then, based on the HK-2 cell model of hypothermic OGD, we found that CIRP silencing significantly stimulated the expression of the TGF-β1/p38 MAPK inflammatory pathway by activating the PHD3/HIF-1α axis, and induced more severe apoptosis through the mitochondrial cytochrome c-Apaf-1-caspase 9 and FADD-caspase 8 death receptor pathways compared with untransfected cells. However, silencing PHD3 remarkably activated the expression of HIF-1α and alleviated the apoptosis of HK-2 cells in hypothermic OGD. On this basis, by pretreating HK-2 and rats with enarodustat, a novel HIF-1α stabilizer, we found that enarodustat significantly mitigated renal cellular apoptosis under hypothermic IR and reversed the aggravated IRI induced by CIRP defect, both in vitro and in vivo. CONCLUSION Our findings indicated that CIRP may confer renoprotection against hypothermic IRI by suppressing PHD3/HIF-1α-mediated apoptosis. PHD3 inhibitors and HIF-1α stabilizers may have clinical value in renal IRI.
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Affiliation(s)
- Peiyao Zhang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 102308, China
- Department of Cardiopulmonary Bypass, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167, North Lishi Road, Xicheng District, Beijing, 100037, China
| | - Liting Bai
- Department of Anesthesiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Yuanyuan Tong
- Department of Anesthesiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Shengwen Guo
- Department of Anesthesiology, Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, Fujian, 361000, China
| | - Wenlong Lu
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 102308, China
| | - Yue Yuan
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Branch of National Clinical Research Centre for Metabolic Diseases, Nanjing, Jiangsu, 210008, China
| | - Wenting Wang
- Department of Cardiopulmonary Bypass, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167, North Lishi Road, Xicheng District, Beijing, 100037, China
| | - Yu Jin
- Department of Cardiopulmonary Bypass, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167, North Lishi Road, Xicheng District, Beijing, 100037, China
| | - Peng Gao
- Department of Cardiopulmonary Bypass, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167, North Lishi Road, Xicheng District, Beijing, 100037, China
| | - Jinping Liu
- Department of Cardiopulmonary Bypass, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167, North Lishi Road, Xicheng District, Beijing, 100037, China.
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21
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Alcalde M, Toro R, Bonet F, Córdoba-Caballero J, Martínez-Barrios E, Ranea JA, Vallverdú-Prats M, Brugada R, Meraviglia V, Bellin M, Sarquella-Brugada G, Campuzano O. Role of MicroRNAs in Arrhythmogenic Cardiomyopathy: translation as biomarkers into clinical practice. Transl Res 2023:S1931-5244(23)00070-1. [PMID: 37105319 DOI: 10.1016/j.trsl.2023.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/11/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023]
Abstract
Arrhythmogenic cardiomyopathy is a rare inherited entity, characterized by a progressive fibro-fatty replacement of the myocardium. It leads to malignant arrhythmias and a high risk of sudden cardiac death. Incomplete penetrance and variable expressivity are hallmarks of this arrhythmogenic cardiac disease, where the first manifestation may be syncope and sudden cardiac death, often triggered by physical exercise. Early identification of individuals at risk is crucial to adopt protective and ideally personalized measures to prevent lethal episodes. The genetic analysis identifies deleterious rare variants in nearly 70% of cases, mostly in genes encoding proteins of the desmosome. However, other factors may modulate the phenotype onset and outcome of disease, such as microRNAs. These small noncoding RNAs play a key role in gene expression regulation and the network of cellular processes. In recent years, data focused on the role of microRNAs as potential biomarkers in arrhythmogenic cardiomyopathy has progressively increased. A better understanding of the functions and interactions of microRNAs will likely have clinical implications. Herein, we propose an exhaustive review of the literature regarding these noncoding RNAs, their versatile mechanisms of gene regulation and present novel targets in arrhythmogenic cardiomyopathy.
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Affiliation(s)
- Mireia Alcalde
- Cardiovascular Genetics Center, University of Girona-IDIBGI, 17190 Girona, Spain; Centro de Investigación Biomédica en Red. Enfermedades Cardiovasculares, 28029 Madrid, Spain
| | - Rocío Toro
- Medicine Department, School of Medicine, 11003 Cadiz Spain; Research Unit, Biomedical Research and Innovation Institute of Cadiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz Spain.
| | - Fernando Bonet
- Medicine Department, School of Medicine, 11003 Cadiz Spain; Research Unit, Biomedical Research and Innovation Institute of Cadiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz Spain
| | - José Córdoba-Caballero
- Medicine Department, School of Medicine, 11003 Cadiz Spain; Research Unit, Biomedical Research and Innovation Institute of Cadiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz Spain
| | - Estefanía Martínez-Barrios
- Pediatric Arrhythmias, Inherited Cardiac Diseases and Sudden Death Unit, Cardiology Department, Sant Joan de Déu Hospital, 08950 Barcelona Spain; European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart (ERN GUARD-Heart), 1105 AZ Amsterdam Netherlands; Arrítmies Pediàtriques, Cardiologia Genètica i Mort Sobtada, Malalties Cardiovasculars en el Desenvolupament, Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, 08950 Barcelona Spain
| | - Juan Antonio Ranea
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071 Málaga Spain; Instituto de Investigación Biomédica de Málaga (IBIMA), 29590 Málaga Spain; Centro de Investigación Biomedica en Red de Enfermedades Raras (CIBERER), 29029 Madrid Spain
| | - Marta Vallverdú-Prats
- Cardiovascular Genetics Center, University of Girona-IDIBGI, 17190 Girona, Spain; Centro de Investigación Biomédica en Red. Enfermedades Cardiovasculares, 28029 Madrid, Spain
| | - Ramon Brugada
- Cardiovascular Genetics Center, University of Girona-IDIBGI, 17190 Girona, Spain; Centro de Investigación Biomédica en Red. Enfermedades Cardiovasculares, 28029 Madrid, Spain; Medical Science Department, School of Medicine, University of Girona, 17003 Girona Spain; Cardiology Department, Hospital Josep Trueta, 17007 Girona Spain
| | - Viviana Meraviglia
- Department of Anatomy and Embryology, Leiden University Medical Center, 2333 Leiden Netherlands
| | - Milena Bellin
- Department of Anatomy and Embryology, Leiden University Medical Center, 2333 Leiden Netherlands; Department of Biology, University of Padua, 35122 Padua Italy; Veneto Institute of Molecular Medicine, 35129 Padua Italy
| | - Georgia Sarquella-Brugada
- Pediatric Arrhythmias, Inherited Cardiac Diseases and Sudden Death Unit, Cardiology Department, Sant Joan de Déu Hospital, 08950 Barcelona Spain; European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart (ERN GUARD-Heart), 1105 AZ Amsterdam Netherlands; Arrítmies Pediàtriques, Cardiologia Genètica i Mort Sobtada, Malalties Cardiovasculars en el Desenvolupament, Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, 08950 Barcelona Spain; Medical Science Department, School of Medicine, University of Girona, 17003 Girona Spain
| | - Oscar Campuzano
- Cardiovascular Genetics Center, University of Girona-IDIBGI, 17190 Girona, Spain; Centro de Investigación Biomédica en Red. Enfermedades Cardiovasculares, 28029 Madrid, Spain; Medical Science Department, School of Medicine, University of Girona, 17003 Girona Spain.
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22
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Peretto G, Sommariva E, Di Resta C, Rabino M, Villatore A, Lazzeroni D, Sala S, Pompilio G, Cooper LT. Myocardial Inflammation as a Manifestation of Genetic Cardiomyopathies: From Bedside to the Bench. Biomolecules 2023; 13:biom13040646. [PMID: 37189393 DOI: 10.3390/biom13040646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/24/2023] [Accepted: 03/24/2023] [Indexed: 05/17/2023] Open
Abstract
Over recent years, preclinical and clinical evidence has implicated myocardial inflammation (M-Infl) in the pathophysiology and phenotypes of traditionally genetic cardiomyopathies. M-Infl resembling myocarditis on imaging and histology occurs frequently as a clinical manifestation of classically genetic cardiac diseases, including dilated and arrhythmogenic cardiomyopathy. The emerging role of M-Infl in disease pathophysiology is leading to the identification of druggable targets for molecular treatment of the inflammatory process and a new paradigm in the field of cardiomyopathies. Cardiomyopathies constitute a leading cause of heart failure and arrhythmic sudden death in the young population. The aim of this review is to present, from bedside to bench, the current state of the art about the genetic basis of M-Infl in nonischemic cardiomyopathies of the dilated and arrhythmogenic spectrum in order to prompt future research towards the identification of novel mechanisms and treatment targets, with the ultimate goal of lowering disease morbidity and mortality.
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Affiliation(s)
- Giovanni Peretto
- Department of Cardiac Electrophysiology and Arrhythmology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Elena Sommariva
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, 20139 Milan, Italy
| | - Chiara Di Resta
- School of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy
- Genomic Unit for the Diagnosis of Human Pathologies, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Martina Rabino
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, 20139 Milan, Italy
| | - Andrea Villatore
- Department of Cardiac Electrophysiology and Arrhythmology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | | | - Simone Sala
- Department of Cardiac Electrophysiology and Arrhythmology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Giulio Pompilio
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, 20139 Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20122 Milan, Italy
| | - Leslie T Cooper
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL 32224, USA
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23
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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: 10] [Impact Index Per Article: 10.0] [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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24
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Using Zebrafish Animal Model to Study the Genetic Underpinning and Mechanism of Arrhythmogenic Cardiomyopathy. Int J Mol Sci 2023; 24:ijms24044106. [PMID: 36835518 PMCID: PMC9966228 DOI: 10.3390/ijms24044106] [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: 01/27/2023] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is largely an autosomal dominant genetic disorder manifesting fibrofatty infiltration and ventricular arrhythmia with predominantly right ventricular involvement. ACM is one of the major conditions associated with an increased risk of sudden cardiac death, most notably in young individuals and athletes. ACM has strong genetic determinants, and genetic variants in more than 25 genes have been identified to be associated with ACM, accounting for approximately 60% of ACM cases. Genetic studies of ACM in vertebrate animal models such as zebrafish (Danio rerio), which are highly amenable to large-scale genetic and drug screenings, offer unique opportunities to identify and functionally assess new genetic variants associated with ACM and to dissect the underlying molecular and cellular mechanisms at the whole-organism level. Here, we summarize key genes implicated in ACM. We discuss the use of zebrafish models, categorized according to gene manipulation approaches, such as gene knockdown, gene knock-out, transgenic overexpression, and CRISPR/Cas9-mediated knock-in, to study the genetic underpinning and mechanism of ACM. Information gained from genetic and pharmacogenomic studies in such animal models can not only increase our understanding of the pathophysiology of disease progression, but also guide disease diagnosis, prognosis, and the development of innovative therapeutic strategies.
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25
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Castelletti S, Orini M, Vischer AS, McKenna WJ, Lambiase PD, Pantazis A, Crotti L. Circadian and Seasonal Pattern of Arrhythmic Events in Arrhythmogenic Cardiomyopathy Patients. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2872. [PMID: 36833593 PMCID: PMC9956986 DOI: 10.3390/ijerph20042872] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/22/2023] [Accepted: 01/28/2023] [Indexed: 05/28/2023]
Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiac disease associated with an increased risk of life-threatening arrhythmias. The aim of the present study was to evaluate the association of ventricular arrhythmias (VA) with circadian and seasonal variation in ARVC. One hundred two ARVC patients with an implantable cardioverter defibrillator (ICD) were enrolled in the study. Arrhythmic events included (a) any initial ventricular tachycardia (VT) or fibrillation (VF) prompting ICD implantation, (b) any VT or non-sustained VT (NSVT) recorded by the ICD, and (c) appropriate ICD shocks/therapy. Differences in the annual incidence of events across seasons (winter, spring, summer, autumn) and period of the day (night, morning, afternoon, evening) were assessed both for all cardiac events and major arrhythmic events. In total, 67 events prior to implantation and 263 ICD events were recorded. These included 135 major (58 ICD therapies, 57 self-terminating VT, 20 sustained VT) and 148 minor (NSVT) events. A significant increase in the frequency of events was observed in the afternoon versus in the nights and mornings (p = 0.016). The lowest number of events was registered in the summer, with a peak in the winter (p < 0.001). Results were also confirmed when excluding NSVT. Arrhythmic events in ARVC follow a seasonal variation and a circadian rhythm. They are more prevalent in the late afternoon, the most active period of the day, and in the winter, supporting the role of physical activity and inflammation as triggers of events.
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Affiliation(s)
- Silvia Castelletti
- Istituto Auxologico Italiano, IRCCS, Department of Cardiology, Piazzale Brescia 20, 20149 Milan, Italy
| | - Michele Orini
- Institute of Cardiovascular Science, University College London, London WC1E 6BT, UK
| | - Annina S. Vischer
- Medical Outpatient Department, ESH Hypertension Centre of Excellence, University Hospital Basel, 4031 Basel, Switzerland
- Faculty of Medicine, University of Basel, 4056 Basel, Switzerland
| | - William J. McKenna
- Institute of Cardiovascular Science, University College London, London WC1E 6BT, UK
- Department of Cardiology, University of A Coruña, 15001 A Coruña, Spain
| | - Pier D. Lambiase
- Institute of Cardiovascular Science, University College London, London WC1E 6BT, UK
- The Barts Heart Centre, Barts Health NHS Trust, London E1 1BB, UK
| | - Antonios Pantazis
- National Heart and Lung Institute, Imperial College London, London SW7 2BX, UK
- Cardiovascular Research Centre, Royal Brompton and Harefield Hospitals, London SW3 6NP, UK
| | - Lia Crotti
- Istituto Auxologico Italiano, IRCCS, Department of Cardiology, Piazzale Brescia 20, 20149 Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, 20126 Milan, Italy
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26
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Vallverdú-Prats M, Carreras D, Pérez GJ, Campuzano O, Brugada R, Alcalde M. Alterations in Calcium Handling Are a Common Feature in an Arrhythmogenic Cardiomyopathy Cell Model Triggered by Desmosome Genes Loss. Int J Mol Sci 2023; 24:ijms24032109. [PMID: 36768439 PMCID: PMC9917020 DOI: 10.3390/ijms24032109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/25/2023] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is an inherited cardiac disease characterized by fibrofatty replacement of the myocardium. Deleterious variants in desmosomal genes are the main cause of ACM and lead to common and gene-specific molecular alterations, which are not yet fully understood. This article presents the first systematic in vitro study describing gene and protein expression alterations in desmosomes, electrical conduction-related genes, and genes involved in fibrosis and adipogenesis. Moreover, molecular and functional alterations in calcium handling were also characterized. This study was performed d with HL1 cells with homozygous knockouts of three of the most frequently mutated desmosomal genes in ACM: PKP2, DSG2, and DSC2 (generated by CRISPR/Cas9). Moreover, knockout and N-truncated clones of DSP were also included. Our results showed functional alterations in calcium handling, a slower calcium re-uptake was observed in the absence of PKP2, DSG2, and DSC2, and the DSP knockout clone showed a more rapid re-uptake. We propose that the described functional alterations of the calcium handling genes may be explained by mRNA expression levels of ANK2, CASQ2, ATP2A2, RYR2, and PLN. In conclusion, the loss of desmosomal genes provokes alterations in calcium handling, potentially contributing to the development of arrhythmogenic events in ACM.
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Affiliation(s)
- Marta Vallverdú-Prats
- Cardiovascular Genetics Center, Biomedical Research Institute of Girona, 17190 Salt, Spain
| | - David Carreras
- Cardiovascular Genetics Center, Biomedical Research Institute of Girona, 17190 Salt, Spain
| | - Guillermo J. Pérez
- Cardiovascular Genetics Center, Biomedical Research Institute of Girona, 17190 Salt, Spain
- Department of Medical Sciences, Universitat de Girona, 17003 Girona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 21005 Madrid, Spain
| | - Oscar Campuzano
- Cardiovascular Genetics Center, Biomedical Research Institute of Girona, 17190 Salt, Spain
- Department of Medical Sciences, Universitat de Girona, 17003 Girona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 21005 Madrid, Spain
| | - Ramon Brugada
- Cardiovascular Genetics Center, Biomedical Research Institute of Girona, 17190 Salt, Spain
- Department of Medical Sciences, Universitat de Girona, 17003 Girona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 21005 Madrid, Spain
- Hospital Josep Trueta, 17007 Girona, Spain
| | - Mireia Alcalde
- Cardiovascular Genetics Center, Biomedical Research Institute of Girona, 17190 Salt, Spain
- Correspondence: ; Tel.: +872-98-70-87
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27
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Lu W, Li Y, Dai Y, Chen K. Dominant Myocardial Fibrosis and Complex Immune Microenvironment Jointly Shape the Pathogenesis of Arrhythmogenic Right Ventricular Cardiomyopathy. Front Cardiovasc Med 2022; 9:900810. [PMID: 35845067 PMCID: PMC9278650 DOI: 10.3389/fcvm.2022.900810] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/13/2022] [Indexed: 12/23/2022] Open
Abstract
Background Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a heritable life-threatening myocardial disease characterized by ventricular arrhythmias and sudden cardiac death. Few studies used RNA-sequencing (RNA-seq) technology to analyze gene expression profiles, hub genes, dominant pathogenic processes, immune microenvironment in ARVC. This study aimed to explore these questions via integrated bioinformatics analysis. Methods RNA-sequencing datasets of GSE107475, GSE107311, GSE107156, and GSE107125 were obtained from the Gene Expression Omnibus database, including right and left ventricular myocardium from ARVC patients and normal controls. Weighted gene co-expression network analysis identified the ARVC hub modules and genes. Functional enrichment and protein-protein interaction analysis were performed by Metascape and STRING. Single-sample gene-set enrichment analysis (ssGSEA) was applied to assess immune cell infiltration. Transcription regulator (TF) analysis was performed by TRRUST. Results Three ARVC hub modules with 25 hub genes were identified. Functional enrichment analysis of the hub genes indicated that myocardial fibrosis was the dominant pathogenic process. Higher myocardial fibrosis activity existed in ARVC than in normal controls. A complex immune microenvironment was discovered that type 2 T helper cell, type 1 T helper cell, regulatory T cell, plasmacytoid dendritic cell, neutrophil, mast cell, central memory CD4 T cell, macrophage, CD56dim natural killer cell, myeloid-derived suppressor cell, memory B cell, natural killer T cell, and activated CD8 T cell were highly infiltrated in ARVC myocardium. The immune-related hub module was enriched in immune processes and inflammatory disease pathways, with hub genes including CD74, HLA-DRA, ITGAM, CTSS, CYBB, and IRF8. A positive linear correlation existed between immune cell infiltration and fibrosis activity in ARVC. NFKB1 and RELA were the shared TFs of ARVC hub genes and immune-related hub module genes, indicating the critical role of NFκB signaling in both mechanisms. Finally, the potential lncRNA-miRNA-mRNA interaction network for ARVC hub genes was constructed. Conclusion Myocardial fibrosis is the dominant pathogenic process in end-stage ARVC patients. A complex immune microenvironment exists in the diseased myocardium of ARVC, in which T cell subsets are the primary category. A tight relationship exists between myocardial fibrosis activity and immune cell infiltration. NFκB signaling pathway possibly contributes to both mechanisms.
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Affiliation(s)
- Wenzhao Lu
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Arrhythmia Center, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yao Li
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Arrhythmia Center, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yan Dai
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Arrhythmia Center, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Keping Chen
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Arrhythmia Center, Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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28
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Liang H, Li L, Zhu S, Tan J, Yang B, Wang X, Wu G, Xie C, Li L, Liu Z, Li Y, Song H, Chen G, Lin L. MicroRNA-744-5p suppresses tumorigenesis and metastasis of osteosarcoma through the p38 mitogen-activated protein kinases pathway by targeting transforming growth factor-beta 1. Bioengineered 2022; 13:12309-12325. [PMID: 35593122 PMCID: PMC9276001 DOI: 10.1080/21655979.2022.2072619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Osteosarcoma (OS) is the most common malignant bone tumor in children and adolescents. Accumulating evidence has revealed that microRNAs (miRNAs) play a crucial role in the progression of OS. In this study, we found that miR-744-5p was the least expressed miRNA in patients with OS by analyzing GSE65071 from the GENE EXPRESSION OMNIBUS (GEO) database. Through real-time quantitative PCR (qRT-PCR), western blotting, colony formation assay, 5-Ethynyl-2-Deoxyuridine (EdU) incorporation assay, transwell migration, and invasion assays, we demonstrated its ability to inhibit the proliferation, migration, and invasion of OS cells in vitro. According to the luciferase reporter assay, transforming growth factor-β1 (TGFB1) was negatively regulated by miR-744-5p and reversed the effects of miR-744-5p on OS. Subcutaneous tumor-forming animal models and tail vein injection lung metastatic models were used in animal experiments, and it was found that miR-744-5p negatively regulated tumor growth and metastasis in vivo. Furthermore, rescue assays verified that miR-744-5p regulates TGFB1 expression in OS. Further experiments revealed that the p38 MAPK signaling pathway is involved in the miR-744-5p/TGFB1 axis. Generally, this study suggests that miR-744-5p is a negative regulator of TGFB1 and suppresses OS progression and metastasis via the p38 MAPK signaling pathway.
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Affiliation(s)
- Haofeng Liang
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.,Department of orthopedics, Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, China
| | - Lin Li
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Shuang Zhu
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Jianye Tan
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Bingsheng Yang
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Xiaoping Wang
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Guofeng Wu
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Chao Xie
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Lutao Li
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Zhengwei Liu
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Yucong Li
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Haoqiang Song
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Guoli Chen
- Department of Orthopedics, Affiliated Hospital of Putian University, Putian, Fujian Province, China
| | - Lijun Lin
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
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29
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Meraviglia V, Alcalde M, Campuzano O, Bellin M. Inflammation in the Pathogenesis of Arrhythmogenic Cardiomyopathy: Secondary Event or Active Driver? Front Cardiovasc Med 2022; 8:784715. [PMID: 34988129 PMCID: PMC8720743 DOI: 10.3389/fcvm.2021.784715] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/30/2021] [Indexed: 12/27/2022] Open
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a rare inherited cardiac disease characterized by arrhythmia and progressive fibro-fatty replacement of the myocardium, which leads to heart failure and sudden cardiac death. Inflammation contributes to disease progression, and it is characterized by inflammatory cell infiltrates in the damaged myocardium and inflammatory mediators in the blood of ACM patients. However, the molecular basis of inflammatory process in ACM remains under investigated and it is unclear whether inflammation is a primary event leading to arrhythmia and myocardial damage or it is a secondary response triggered by cardiomyocyte death. Here, we provide an overview of the proposed players and triggers involved in inflammation in ACM, focusing on those studied using in vivo and in vitro models. Deepening current knowledge of inflammation-related mechanisms in ACM could help identifying novel therapeutic perspectives, such as anti-inflammatory therapy.
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Affiliation(s)
- Viviana Meraviglia
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden, Netherlands
| | - Mireia Alcalde
- Cardiovascular Genetics Center, University of Girona-IdIBGi, Girona, Spain.,Centro Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Oscar Campuzano
- Cardiovascular Genetics Center, University of Girona-IdIBGi, Girona, Spain.,Centro Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain.,Medical Science Department, School of Medicine, University of Girona, Girona, Spain
| | - Milena Bellin
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden, Netherlands.,Department of Biology, University of Padua, Padua, Italy.,Veneto Institute of Molecular Medicine, Padua, Italy
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30
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Abstract
Transforming growth factor-β (TGFβ) isoforms are upregulated and activated in myocardial diseases and have an important role in cardiac repair and remodelling, regulating the phenotype and function of cardiomyocytes, fibroblasts, immune cells and vascular cells. Cardiac injury triggers the generation of bioactive TGFβ from latent stores, through mechanisms involving proteases, integrins and specialized extracellular matrix (ECM) proteins. Activated TGFβ signals through the SMAD intracellular effectors or through non-SMAD cascades. In the infarcted heart, the anti-inflammatory and fibroblast-activating actions of TGFβ have an important role in repair; however, excessive or prolonged TGFβ signalling accentuates adverse remodelling, contributing to cardiac dysfunction. Cardiac pressure overload also activates TGFβ cascades, which initially can have a protective role, promoting an ECM-preserving phenotype in fibroblasts and preventing the generation of injurious, pro-inflammatory ECM fragments. However, prolonged and overactive TGFβ signalling in pressure-overloaded cardiomyocytes and fibroblasts can promote cardiac fibrosis and dysfunction. In the atria, TGFβ-mediated fibrosis can contribute to the pathogenic substrate for atrial fibrillation. Overactive or dysregulated TGFβ responses have also been implicated in cardiac ageing and in the pathogenesis of diabetic, genetic and inflammatory cardiomyopathies. This Review summarizes the current evidence on the role of TGFβ signalling in myocardial diseases, focusing on cellular targets and molecular mechanisms, and discussing challenges and opportunities for therapeutic translation.
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Affiliation(s)
- Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY, USA.
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31
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Kohela A, van Rooij E. Fibro-fatty remodelling in arrhythmogenic cardiomyopathy. Basic Res Cardiol 2022; 117:22. [PMID: 35441328 PMCID: PMC9018639 DOI: 10.1007/s00395-022-00929-4] [Citation(s) in RCA: 2] [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: 01/04/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 01/31/2023]
Abstract
Arrhythmogenic cardiomyopathy (AC) is an inherited disorder characterized by lethal arrhythmias and a risk to sudden cardiac death. A hallmark feature of AC is the progressive replacement of the ventricular myocardium with fibro-fatty tissue, which can act as an arrhythmogenic substrate further exacerbating cardiac dysfunction. Therefore, identifying the processes underlying this pathological remodelling would help understand AC pathogenesis and support the development of novel therapies. In this review, we summarize our knowledge on the different models designed to identify the cellular origin and molecular pathways underlying cardiac fibroblast and adipocyte cell differentiation in AC patients. We further outline future perspectives and how targeting the fibro-fatty remodelling process can contribute to novel AC therapeutics.
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Affiliation(s)
- Arwa Kohela
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW), Utrecht, The Netherlands
| | - Eva van Rooij
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW), Utrecht, The Netherlands ,Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands
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32
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Tu B, Wu L, Zheng L, Liu S, Sheng L, Liu L, Zhu Z, Yao Y. Angiotensin-Converting Enzyme Inhibitors/Angiotensin Receptor Blockers: Anti-arrhythmic Drug for Arrhythmogenic Right Ventricular Cardiomyopathy. Front Cardiovasc Med 2021; 8:769138. [PMID: 34869685 PMCID: PMC8632763 DOI: 10.3389/fcvm.2021.769138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/25/2021] [Indexed: 12/02/2022] Open
Abstract
Background: Current treatment guidelines for arrhythmogenic right ventricular cardiomyopathy (ARVC) mainly emphasize on prevention of ventricular arrhythmic events. Despite the progressive nature of ARVC, therapeutic options focusing on decelerating disease progression are scarce. Methods and Results: This retrospective observational cohort study included 311 patients [age, 39.1 ± 14.4 years; male, 233 (74.9%)] with a definite diagnosis of ARVC as determined by the 2010 Task Force Diagnostic Criteria. Among them, 113 patients (36.3%) received ACEI/ARB treatment. Disease progression was evaluated according to repeat transthoracic echocardiograms with a linear mixed model. Patients receiving ACEI/ARB treatment were associated with slower disease progression reflected by a gradual decrease in tricuspid annular plane systolic excursion than those not receiving ACEI/ARB treatment (0.37 vs. 0.61 mm per year decrease, P < 0.001) and slower dilation of right ventricular outflow tract (0.57 vs. 1.06 mm per year increased, P = 0.003). Cox proportional hazard regression models were used to evaluate the association between life-threatening ventricular tachycardia events and ACEI/ARB treatment. A reduced risk of life-threatening ventricular arrhythmia was associated with ACEI/ARB treatment compared to that without ACEI/ARB treatment (adjusted HR: 0.71, 95% CI: 0.52–0.96, P = 0.031). Conclusions: ACEI/ARB treatment is associated with slower disease progression and lower risk of life-threatening ventricular arrhythmia in patients with ARVC. Delaying disease progression may pave way for reducing life-threatening ventricular arrhythmia risk.
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Affiliation(s)
- Bin Tu
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lingmin Wu
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lihui Zheng
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shangyu Liu
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lishui Sheng
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Limin Liu
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhenghui Zhu
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yan Yao
- National Key Laboratory, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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33
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Asatryan B, Asimaki A, Landstrom AP, Khanji MY, Odening KE, Cooper LT, Marchlinski FE, Gelzer AR, Semsarian C, Reichlin T, Owens AT, Chahal CAA. Inflammation and Immune Response in Arrhythmogenic Cardiomyopathy: State-of-the-Art Review. Circulation 2021; 144:1646-1655. [PMID: 34780255 PMCID: PMC9034711 DOI: 10.1161/circulationaha.121.055890] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a primary disease of the myocardium, predominantly caused by genetic defects in proteins of the cardiac intercalated disc, particularly, desmosomes. Transmission is mostly autosomal dominant with incomplete penetrance. ACM also has wide phenotype variability, ranging from premature ventricular contractions to sudden cardiac death and heart failure. Among other drivers and modulators of phenotype, inflammation in response to viral infection and immune triggers have been postulated to be an aggravator of cardiac myocyte damage and necrosis. This theory is supported by multiple pieces of evidence, including the presence of inflammatory infiltrates in more than two-thirds of ACM hearts, detection of different cardiotropic viruses in sporadic cases of ACM, the fact that patients with ACM often fulfill the histological criteria of active myocarditis, and the abundance of anti-desmoglein-2, antiheart, and anti-intercalated disk autoantibodies in patients with arrhythmogenic right ventricular cardiomyopathy. In keeping with the frequent familial occurrence of ACM, it has been proposed that, in addition to genetic predisposition to progressive myocardial damage, a heritable susceptibility to viral infections and immune reactions may explain familial clustering of ACM. Moreover, considerable in vitro and in vivo evidence implicates activated inflammatory signaling in ACM. Although the role of inflammation/immune response in ACM is not entirely clear, inflammation as a driver of phenotype and a potential target for mechanism-based therapy warrants further research. This review discusses the present evidence supporting the role of inflammatory and immune responses in ACM pathogenesis and proposes opportunities for translational and clinical investigation.
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Affiliation(s)
- Babken Asatryan
- Department of Cardiology, Inselspital, Bern University Hospital (B.A., K.E.O., T.R.), University of Bern, Switzerland
| | - Angeliki Asimaki
- Cardiovascular and Clinical Academic Group, Molecular and Clinical Sciences Research Institute, St George's University of London, United Kingdom (A.A.)
| | - Andrew P Landstrom
- Division of Cardiology, Department of Pediatrics (A.P.L.), Duke University School of Medicine, Durham, NC
- Department of Cell Biology (A.P.L.), Duke University School of Medicine, Durham, NC
| | - Mohammed Y Khanji
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, United Kingdom (M.Y.K., A.A.C.)
- NIHR Biomedical Research Unit, William Harvey Research Institute, Queen Mary University of London, United Kingdom (M.Y.K.)
- Department of Cardiology, Newham University Hospital, London, United Kingdom (M.Y.K.)
| | - Katja E Odening
- Department of Cardiology, Inselspital, Bern University Hospital (B.A., K.E.O., T.R.), University of Bern, Switzerland
- Department of Physiology (K.E.O.), University of Bern, Switzerland
| | - Leslie T Cooper
- Cardiac Electrophysiology, Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia (F.E.M., A.A.C.)
| | - Francis E Marchlinski
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia (A.R.G.)
| | - Anna R Gelzer
- Agnes Ginges Centre for Molecular Cardiology at Centenary Institute (C.S.), The University of Sydney, New South Wales, Australia
| | - Christopher Semsarian
- Sydney Medical School Faculty of Medicine and Health (C.S.), The University of Sydney, New South Wales, Australia
- Department of Cardiology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia (C.S.)
| | - Tobias Reichlin
- Department of Cardiology, Inselspital, Bern University Hospital (B.A., K.E.O., T.R.), University of Bern, Switzerland
| | - Anjali T Owens
- Center for Inherited Cardiac Disease, Division of Cardiovascular Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia (A.T.O.)
| | - C Anwar A Chahal
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, United Kingdom (M.Y.K., A.A.C.)
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia (A.R.G.)
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (A.A.C.)
- WellSpan Center for Inherited Cardiovascular Diseases, WellSpan Health, Lancaster, PA (A.A.C.)
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34
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Zhang K, Cloonan PE, Sundaram S, Liu F, Das SL, Ewoldt JK, Bays JL, Tomp S, Toepfer CN, Marsiglia JDC, Gorham J, Reichart D, Eyckmans J, Seidman JG, Seidman CE, Chen CS. Plakophilin-2 truncating variants impair cardiac contractility by disrupting sarcomere stability and organization. SCIENCE ADVANCES 2021; 7:eabh3995. [PMID: 34652945 PMCID: PMC8519574 DOI: 10.1126/sciadv.abh3995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 08/25/2021] [Indexed: 05/10/2023]
Abstract
Progressive loss of cardiac systolic function in arrhythmogenic cardiomyopathy (ACM) has recently gained attention as an important clinical consideration in managing the disease. However, the mechanisms leading to reduction in cardiac contractility are poorly defined. Here, we use CRISPR gene editing to generate human induced pluripotent stem cells (iPSCs) that harbor plakophilin-2 truncating variants (PKP2tv), the most prevalent ACM-linked mutations. The PKP2tv iPSC–derived cardiomyocytes are shown to have aberrant action potentials and reduced systolic function in cardiac microtissues, recapitulating both the electrical and mechanical pathologies reported in ACM. By combining cell micropatterning with traction force microscopy and live imaging, we found that PKP2tvs impair cardiac tissue contractility by destabilizing cell-cell junctions and in turn disrupting sarcomere stability and organization. These findings highlight the interplay between cell-cell adhesions and sarcomeres required for stabilizing cardiomyocyte structure and function and suggest fundamental pathogenic mechanisms that may be shared among different types of cardiomyopathies.
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Affiliation(s)
- Kehan Zhang
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Paige E. Cloonan
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Subramanian Sundaram
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Feng Liu
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
| | - Shoshana L. Das
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
- Harvard-MIT Program in Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jourdan K. Ewoldt
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Jennifer L. Bays
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Samuel Tomp
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Christopher N. Toepfer
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK
| | | | - Joshua Gorham
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Daniel Reichart
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Jeroen Eyckmans
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | | | - Christine E. Seidman
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
- Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA
| | - Christopher S. Chen
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
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35
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Müller L, Hatzfeld M, Keil R. Desmosomes as Signaling Hubs in the Regulation of Cell Behavior. Front Cell Dev Biol 2021; 9:745670. [PMID: 34631720 PMCID: PMC8495202 DOI: 10.3389/fcell.2021.745670] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/31/2021] [Indexed: 12/19/2022] Open
Abstract
Desmosomes are intercellular junctions, which preserve tissue integrity during homeostatic and stress conditions. These functions rely on their unique structural properties, which enable them to respond to context-dependent signals and transmit them to change cell behavior. Desmosome composition and size vary depending on tissue specific expression and differentiation state. Their constituent proteins are highly regulated by posttranslational modifications that control their function in the desmosome itself and in addition regulate a multitude of desmosome-independent functions. This review will summarize our current knowledge how signaling pathways that control epithelial shape, polarity and function regulate desmosomes and how desmosomal proteins transduce these signals to modulate cell behavior.
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Affiliation(s)
- Lisa Müller
- Department for Pathobiochemistry, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Mechthild Hatzfeld
- Department for Pathobiochemistry, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - René Keil
- Department for Pathobiochemistry, Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
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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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Desmoglein-2 harnesses a PDZ-GEF2/Rap1 signaling axis to control cell spreading and focal adhesions independent of cell-cell adhesion. Sci Rep 2021; 11:13295. [PMID: 34168237 PMCID: PMC8225821 DOI: 10.1038/s41598-021-92675-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 06/14/2021] [Indexed: 11/18/2022] Open
Abstract
Desmosomes have a central role in mediating extracellular adhesion between cells, but they also coordinate other biological processes such as proliferation, differentiation, apoptosis and migration. In particular, several lines of evidence have implicated desmosomal proteins in regulating the actin cytoskeleton and attachment to the extracellular matrix, indicating signaling crosstalk between cell–cell junctions and cell–matrix adhesions. In our study, we found that cells lacking the desmosomal cadherin Desmoglein-2 (Dsg2) displayed a significant increase in spreading area on both fibronectin and collagen, compared to control A431 cells. Intriguingly, this effect was observed in single spreading cells, indicating that Dsg2 can exert its effects on cell spreading independent of cell–cell adhesion. We hypothesized that Dsg2 may mediate cell–matrix adhesion via control of Rap1 GTPase, which is well known as a central regulator of cell spreading dynamics. We show that Rap1 activity is elevated in Dsg2 knockout cells, and that Dsg2 harnesses Rap1 and downstream TGFβ signaling to influence both cell spreading and focal adhesion protein phosphorylation. Further analysis implicated the Rap GEF PDZ-GEF2 in mediating Dsg2-dependent cell spreading. These data have identified a novel role for Dsg2 in controlling cell spreading, providing insight into the mechanisms via which cadherins exert non-canonical junction-independent effects.
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Rouhi L, Fan S, Cheedipudi SM, Braza-Boïls A, Molina MS, Yao Y, Robertson MJ, Coarfa C, Gimeno JR, Molina P, Gurha P, Zorio E, Marian AJ. The EP300/TP53 pathway, a suppressor of the Hippo and canonical WNT pathways, is activated in human hearts with arrhythmogenic cardiomyopathy in the absence of overt heart failure. Cardiovasc Res 2021; 118:1466-1478. [PMID: 34132777 DOI: 10.1093/cvr/cvab197] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/07/2021] [Accepted: 06/14/2021] [Indexed: 12/21/2022] Open
Abstract
AIM Arrhythmogenic cardiomyopathy (ACM) is a primary myocardial disease that typically manifests with cardiac arrhythmias, progressive heart failure and sudden cardiac death (SCD). ACM is mainly caused by mutations in genes encoding desmosome proteins. Desmosomes are cell-cell adhesion structures and hubs for mechanosensing and mechanotransduction. The objective was to identify the dysregulated molecular and biological pathways in human ACM in the absence of overt heart failure. METHODS AND RESULTS Transcriptomes in the right ventricular endomyocardial biopsy samples from three independent individuals carrying truncating mutations in the DSP gene and 5 control samples were analyzed by RNA-Seq (discovery group). These cases presented with cardiac arrhythmias and had a normal right ventricular function. The RNA-Seq analysis identified ∼5,000 differentially expressed genes (DEGs), which predicted suppression of the Hippo and canonical WNT pathways, among others.Dysregulated genes and pathways, identified by RNA-Seq, were tested for validation in the right and left ventricular tissues from 5 independent autopsy-confirmed ACM cases with defined mutations (validation group), who were victims of SCD and had no history of heart failure. Protein levels and nuclear localization of the cWNT and Hippo pathway transcriptional regulators were reduced in the right and left ventricular validation samples. In contrast, levels of acetyltransferase EP300, known to suppress the Hippo and canonical WNT pathways, were increased and its bona fide target TP53 was acetylated. RNA-Seq data identified apical junction, reflective of cell-cell attachment, as the most disrupted biological pathway, which was corroborated by disrupted desmosomes and intermediate filament structures. Moreover, the DEGs also predicted dysregulation of over a dozen canonical signal transduction pathways, including the Tec kinase and integrin signaling pathways. The changes were associated with increased apoptosis and fibro-adipogenesis in the ACM hearts. CONCLUSION Altered apical junction structures is associated with activation of the EP300-TP53 and suppression of the Hippo/cWNT pathways in human ACM caused by defined mutations in the absence of an overt heart failure. The findings implicate altered mechanotransduction in the pathogenesis of ACM. TRANSLATIONAL PERSPECTIVE The findings suggest that altered mechanosensing at the cell-cell junction instigates a cascade of molecular events through the activation of acetyltransferase EP300/TP53 and suppression of gene expression through the Hippo/canonical WNT pathways in human arrhythmogenic cardiomyopathy (ACM) caused by defined mutations. These molecular changes occur early and in the absence of overt heart failure. Consequently, one may envision cell type-specific interventions to target the dysregulated transcriptional, mechanosensing, and mechanotransduction pathways to prevent the evolving phenotype in human ACM.
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Affiliation(s)
- Leila Rouhi
- Center for Cardiovascular Genetics, Institute of Molecular Medicine and Department of Medicine, University of Texas Health Sciences Center at Houston, Texas, 77030
| | - Siyang Fan
- Center for Cardiovascular Genetics, Institute of Molecular Medicine and Department of Medicine, University of Texas Health Sciences Center at Houston, Texas, 77030
| | - Sirisha M Cheedipudi
- Center for Cardiovascular Genetics, Institute of Molecular Medicine and Department of Medicine, University of Texas Health Sciences Center at Houston, Texas, 77030
| | - Aitana Braza-Boïls
- Unidad de Cardiopatías Familiares, Muerte Súbita y Mecanismos de Enfermedad (CaFaMuSMe)., Instituto de Investigación Sanitaria La Fe, Valencia, Spain.,Center for Biomedical Network Research on Cardiovascular Diseases (CIBERCV), Madrid, Spain
| | - Maria Sabater Molina
- Cardiogenetic Laboratory, Instituto Murciano de Investigación Biosanitaria. Murcia. Spain
| | - Yan Yao
- Fuwai Hospital, Peking Union Medical College, Beijing, PR China
| | | | - Cristian Coarfa
- Department of Cell Biology. Baylor College of Medicine, Houston, TX, 77030
| | - Juan R Gimeno
- Center for Biomedical Network Research on Cardiovascular Diseases (CIBERCV), Madrid, Spain.,Unidad CSUR Cardiopatias Familiares, Hospital Universitario Virgen de la Arrixaca. Murcia
| | - Pilar Molina
- Unidad de Cardiopatías Familiares, Muerte Súbita y Mecanismos de Enfermedad (CaFaMuSMe)., Instituto de Investigación Sanitaria La Fe, Valencia, Spain.,Instituto de Medicina Legal y Ciencias Forenses de Valencia, and Histology Unit at the Universitat de València, Spain
| | - Priyatansh Gurha
- Center for Cardiovascular Genetics, Institute of Molecular Medicine and Department of Medicine, University of Texas Health Sciences Center at Houston, Texas, 77030
| | - Esther Zorio
- Unidad de Cardiopatías Familiares, Muerte Súbita y Mecanismos de Enfermedad (CaFaMuSMe)., Instituto de Investigación Sanitaria La Fe, Valencia, Spain.,Center for Biomedical Network Research on Cardiovascular Diseases (CIBERCV), Madrid, Spain.,Unidad de Cardiopatías Familiares, Servicio de Cardiología, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - A J Marian
- Center for Cardiovascular Genetics, Institute of Molecular Medicine and Department of Medicine, University of Texas Health Sciences Center at Houston, Texas, 77030
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Cheng C, Pei X, Li SW, Yang J, Li C, Tang J, Hu K, Huang G, Min WP, Sang Y. CRISPR/Cas9 library screening uncovered methylated PKP2 as a critical driver of lung cancer radioresistance by stabilizing β-catenin. Oncogene 2021; 40:2842-2857. [PMID: 33742119 DOI: 10.1038/s41388-021-01692-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/18/2021] [Accepted: 01/29/2021] [Indexed: 01/31/2023]
Abstract
Radiation resistance is a major cause of lung cancer treatment failure. Armadillo (ARM) superfamily proteins participate in various fundamental cellular processes; however, whether ARM proteins regulate radiation resistance is not fully understood. Here, we used an unbiased CRISPR/Cas9 library screen and identified plakophilin 2 (PKP2), a member of the ARM superfamily of proteins, as a critical driver of radiation resistance in lung cancer. The PKP2 level was significantly higher after radiotherapy than before radiotherapy, and high PKP2 expression after radiotherapy predicted poor overall survival (OS) and postprogression survival (PPS). Mechanistically, mass spectrometry analysis identified that PKP2 was methylated at the arginine site and interacted with protein arginine methyltransferase 1 (PRMT1). Methylation of PKP2 by PRMT1 stabilized β-catenin by recruiting USP7, further inducing LIG4, a key DNA ligase in nonhomologous end-joining (NHEJ) repair. Concomitantly, PKP2-induced radioresistance depended on facilitating LIG4-mediated NHEJ repair in lung cancer. More strikingly, after exposure to irradiation, treatment with the PRMT1 inhibitor C-7280948 abolished PKP2-induced radioresistance, and C-7280948 is a potential radiosensitizer in lung cancer. In summary, our results demonstrate that targeting the PRMT1/PKP2/β-catenin/LIG4 pathway is an effective approach to overcome radiation resistance in lung cancer.
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Affiliation(s)
- Chun Cheng
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, Department of Center Laboratory, The Third Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaofeng Pei
- Department of Thoracic Oncology, The Cancer Center of the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Si-Wei Li
- Department of Oncology, Tongji Huangzhou Hospital of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jun Yang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, Department of Center Laboratory, The Third Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chenxi Li
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, Department of Center Laboratory, The Third Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianjun Tang
- Department of Respiratory, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Kaishun Hu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Guofu Huang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, Department of Center Laboratory, The Third Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wei-Ping Min
- Department of Surgery, Pathology and Oncology, University of Western Ontario, London, ON, Canada
| | - Yi Sang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, Department of Center Laboratory, The Third Affiliated Hospital of Nanchang University, Nanchang, China.
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Wu HH, Meng TT, Chen JM, Meng FL, Wang SY, Liu RH, Chen JN, Ning B, Li Y, Su GH. Asenapine maleate inhibits angiotensin II-induced proliferation and activation of cardiac fibroblasts via the ROS/TGFβ1/MAPK signaling pathway. Biochem Biophys Res Commun 2021; 553:172-179. [PMID: 33773140 DOI: 10.1016/j.bbrc.2021.03.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/08/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Cardiac fibrosis will increase wall stiffness and diastolic dysfunction, which will eventually lead to heart failure. Asenapine maleate (AM) is widely used in the treatment of schizophrenia. In the current study, we explored the potential mechanism underlying the role of AM in angiotensin II (Ang II)-induced cardiac fibrosis. METHODS Cardiac fibroblasts (CFs) were stimulated using Ang II with or without AM. Cell proliferation was measured using the cell counting kit-8 assay and the Cell-Light EdU Apollo567 In Vitro Kit. The expression levels of proliferating cell nuclear antigen (PCNA) and α-smooth muscle actin (α-SMA) were detected using immunofluorescence or western blotting. At the protein level, the expression levels of the components of the transforming growth factor beta 1 (TGFβ1)/mitogen-activated protein kinase (MAPK) signaling pathway were also detected. RESULTS After Ang II stimulation, TGFβ1, TGFβ1 receptor, α-SMA, fibronectin (Fn), collagen type I (Col1), and collagen type III (Col3) mRNA levels increased; the TGFβ1/MAPK signaling pathway was activated in CFs. After AM pretreatment, cell proliferation was inhibited, the numbers of PCNA -positive cells and the levels of cardiac fibrosis markers decreased. The activity of the TGFβ1/MAPK signaling pathway was also inhibited. Therefore, AM can inhibit cardiac fibrosis by blocking the Ang II-induced activation through TGFβ1/MAPK signaling pathway. CONCLUSIONS This is the first report to demonstrate that AM can inhibit Ang II-induced cardiac fibrosis by down-regulating the TGFβ1/MAPK signaling pathway. In this process, AM inhibited the proliferation and activation of CFs and reduced the levels of cardiac fibrosis markers. Thus, AM represents a potential treatment strategy for cardiac fibrosis.
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Affiliation(s)
- Hui-Hui Wu
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ting-Ting Meng
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jia-Min Chen
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Fan-Liang Meng
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Shu-Ya Wang
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China; Research Center for Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Rong-Han Liu
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China; Research Center for Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jia-Nan Chen
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China; Research Center for Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Bin Ning
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China; Research Center for Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Ying Li
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China; Research Center for Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Guo-Hai Su
- Research Center for Translational Medicine, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China; Research Center for Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, China.
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Khudiakov AA, Panshin DD, Fomicheva YV, Knyazeva AA, Simonova KA, Lebedev DS, Mikhaylov EN, Kostareva AA. Different Expressions of Pericardial Fluid MicroRNAs in Patients With Arrhythmogenic Right Ventricular Cardiomyopathy and Ischemic Heart Disease Undergoing Ventricular Tachycardia Ablation. Front Cardiovasc Med 2021; 8:647812. [PMID: 33816578 PMCID: PMC8017144 DOI: 10.3389/fcvm.2021.647812] [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: 12/30/2020] [Accepted: 02/15/2021] [Indexed: 01/15/2023] Open
Abstract
Introduction: Pericardial fluid is enriched with biologically active molecules of cardiovascular origin including microRNAs. Investigation of the disease-specific extracellular microRNAs could shed light on the molecular processes underlying disease development. Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited heart disease characterized by life-threatening arrhythmias and progressive heart failure development. The current data about the association between microRNAs and ARVC development are limited. Methods and Results: We performed small RNA sequence analysis of microRNAs of pericardial fluid samples obtained during transcutaneous epicardial access for ventricular tachycardia (VT) ablation of six patients with definite ARVC and three post-infarction VT patients. Disease-associated microRNAs of pericardial fluid were identified. Five microRNAs (hsa-miR-1-3p, hsa-miR-21-5p, hsa-miR-122-5p, hsa-miR-206, and hsa-miR-3679-5p) were found to be differentially expressed between patients with ARVC and patients with post-infarction VT. Enrichment analysis of differentially expressed microRNAs revealed their close linkage to cardiac diseases. Conclusion: Our data extend the knowledge of pericardial fluid microRNA composition and highlight five pericardial fluid microRNAs potentially linked to ARVC pathogenesis. Further studies are required to confirm the use of pericardial fluid RNA sequencing in differential diagnosis of ARVC.
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Affiliation(s)
- Aleksandr A Khudiakov
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Daniil D Panshin
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Yulia V Fomicheva
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Anastasia A Knyazeva
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Ksenia A Simonova
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Dmitry S Lebedev
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia.,Department of Bioengineering Systems, Saint Petersburg Electrotechnical University "LETI", Saint Petersburg, Russia
| | - Evgeny N Mikhaylov
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia.,Department of Bioengineering Systems, Saint Petersburg Electrotechnical University "LETI", Saint Petersburg, Russia
| | - Anna A Kostareva
- Institute of Molecular Biology and Genetics, Almazov National Medical Research Centre, Saint Petersburg, Russia.,Department of Women's and Children's Health, Center for Molecular Medicine, Karolinska Institute, Stockholm, Sweden
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Maione AS, Stadiotti I, Pilato CA, Perrucci GL, Saverio V, Catto V, Vettor G, Casella M, Guarino A, Polvani G, Pompilio G, Sommariva E. Excess TGF-β1 Drives Cardiac Mesenchymal Stromal Cells to a Pro-Fibrotic Commitment in Arrhythmogenic Cardiomyopathy. Int J Mol Sci 2021; 22:ijms22052673. [PMID: 33800912 PMCID: PMC7961797 DOI: 10.3390/ijms22052673] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/24/2021] [Accepted: 03/01/2021] [Indexed: 02/07/2023] Open
Abstract
Arrhythmogenic Cardiomyopathy (ACM) is characterized by the replacement of the myocardium with fibrotic or fibro-fatty tissue and inflammatory infiltrates in the heart. To date, while ACM adipogenesis is a well-investigated differentiation program, ACM-related fibrosis remains a scientific gap of knowledge. In this study, we analyze the fibrotic process occurring during ACM pathogenesis focusing on the role of cardiac mesenchymal stromal cells (C-MSC) as a source of myofibroblasts. We performed the ex vivo studies on plasma and right ventricular endomyocardial bioptic samples collected from ACM patients and healthy control donors (HC). In vitro studies were performed on C-MSC isolated from endomyocardial biopsies of both groups. Our results revealed that circulating TGF-β1 levels are significantly higher in the ACM cohort than in HC. Accordingly, fibrotic markers are increased in ACM patient-derived cardiac biopsies compared to HC ones. This difference is not evident in isolated C-MSC. Nevertheless, ACM C-MSC are more responsive than HC ones to TGF-β1 treatment, in terms of pro-fibrotic differentiation and higher activation of the SMAD2/3 signaling pathway. These results provide the novel evidence that C-MSC are a source of myofibroblasts and participate in ACM fibrotic remodeling, being highly responsive to ACM-characteristic excess TGF-β1.
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Affiliation(s)
- Angela Serena Maione
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
- Correspondence: ; Tel.: +39-02-5800-2753
| | - Ilaria Stadiotti
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
| | - Chiara Assunta Pilato
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
| | - Gianluca Lorenzo Perrucci
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
| | - Valentina Saverio
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
| | - Valentina Catto
- Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (V.C.); (G.V.); (M.C.)
| | - Giulia Vettor
- Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (V.C.); (G.V.); (M.C.)
| | - Michela Casella
- Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (V.C.); (G.V.); (M.C.)
| | - Anna Guarino
- Cardiovascular Tissue Bank of Milan, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (A.G.); (G.P.)
| | - Gianluca Polvani
- Cardiovascular Tissue Bank of Milan, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (A.G.); (G.P.)
| | - Giulio Pompilio
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20122 Milan, Italy
| | - Elena Sommariva
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (I.S.); (C.A.P.); (G.L.P.); (V.S.); (G.P.); (E.S.)
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Niu M, He Y, Xu J, Ding L, He T, Yi Y, Fu M, Guo R, Li F, Chen H, Chen YG, Xiao ZXJ. Noncanonical TGF-β signaling leads to FBXO3-mediated degradation of ΔNp63α promoting breast cancer metastasis and poor clinical prognosis. PLoS Biol 2021; 19:e3001113. [PMID: 33626035 PMCID: PMC7939357 DOI: 10.1371/journal.pbio.3001113] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 03/08/2021] [Accepted: 01/25/2021] [Indexed: 12/22/2022] Open
Abstract
Transforming growth factor-β (TGF-β) signaling plays a critical role in promoting epithelial-to-mesenchymal transition (EMT), cell migration, invasion, and tumor metastasis. ΔNp63α, the major isoform of p63 protein expressed in epithelial cells, is a key transcriptional regulator of cell adhesion program and functions as a critical metastasis suppressor. It has been documented that the expression of ΔNp63α is tightly controlled by oncogenic signaling and is frequently reduced in advanced cancers. However, whether TGF-β signaling regulates ΔNp63α expression in promoting metastasis is largely unclear. In this study, we demonstrate that activation of TGF-β signaling leads to stabilization of E3 ubiquitin ligase FBXO3, which, in turn, targets ΔNp63α for proteasomal degradation in a Smad-independent but Erk-dependent manner. Knockdown of FBXO3 or restoration of ΔNp63α expression effectively rescues TGF-β-induced EMT, cell motility, and tumor metastasis in vitro and in vivo. Furthermore, clinical analyses reveal a significant correlation among TGF-β receptor I (TβRI), FBXO3, and p63 protein expression and that high expression of TβRI/FBXO3 and low expression of p63 are associated with poor recurrence-free survival (RFS). Together, these results demonstrate that FBXO3 facilitates ΔNp63α degradation to empower TGF-β signaling in promoting tumor metastasis and that the TβRI-FBXO3-ΔNp63α axis is critically important in breast cancer development and clinical prognosis. This study suggests that FBXO3 may be a potential therapeutic target for advanced breast cancer treatment.
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Affiliation(s)
- Mengmeng Niu
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yajun He
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jing Xu
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Liangping Ding
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Tao He
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yong Yi
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Mengyuan Fu
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Rongtian Guo
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Fengtian Li
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hu Chen
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Zhi-Xiong Jim Xiao
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China
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Xu D, Li S, Wang L, Jiang J, Zhao L, Huang X, Sun Z, Li C, Sun L, Li X, Jiang Z, Zhang L. TAK1 inhibition improves myoblast differentiation and alleviates fibrosis in a mouse model of Duchenne muscular dystrophy. J Cachexia Sarcopenia Muscle 2021; 12:192-208. [PMID: 33236534 PMCID: PMC7890152 DOI: 10.1002/jcsm.12650] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 10/09/2020] [Accepted: 11/02/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Transforming growth factor-β-activated kinase 1 (TAK1) plays a key role in regulating fibroblast and myoblast proliferation and differentiation. However, the TAK1 changes associated with Duchenne muscular dystrophy (DMD) are poorly understood, and it remains unclear how TAK1 regulation could be exploited to aid the treatment of this disease. METHODS Muscle biopsies were obtained from control donors or DMD patients for diagnosis (n = 6 per group, male, 2-3 years, respectively). Protein expression of phosphorylated TAK1 was measured by western blot and immunofluorescence analysis. In vivo overexpression of TAK1 was performed in skeletal muscle to assess whether TAK1 is sufficient to induce or aggravate atrophy and fibrosis. To explore whether TAK1 inhibition protects against muscle damage, mdx (loss of dystrophin) mice were treated with adeno-associated virus (AAV)-short hairpin TAK1 (shTAK1) or NG25 (a TAK1 inhibitor). Serum analysis, skeletal muscle performance and histology, muscle contractile function, and gene and protein expression were performed. RESULTS We found that TAK1 was activated in the dystrophic muscles of DMD patients (n = 6, +72.2%, P < 0.001), resulting in fibrosis ( +65.9% for fibronectin expression, P < 0.001) and loss of muscle fibres (-32.5%, P < 0.01). Moreover, TAK1 was activated by interleukin-1β, tumour necrosis factor-α, and transforming growth factor-β1 (P < 0.01). Overexpression of TAK1 by AAV vectors further aggravated fibrosis (n = 8, +39.6% for hydroxyproline content, P < 0.01) and exacerbated muscle wasting (-31.6%, P < 0.01) in mdx mice; however, these effects were reversed in mdx mice by treatment with AAV-short hairpin TAK1 (shTAK1) or NG25 (a TAK1 inhibitor). The molecular mechanism underlying these effects may be related to the prevention of TAK1-mediated transdifferentiation of myoblasts into fibroblasts, thereby reducing fibrosis and increasing myoblast differentiation. CONCLUSIONS Our findings show that TAK1 activation exacerbated fibrosis and muscle degeneration and that TAK1 inhibition can improve whole-body muscle quality and the function of dystrophic skeletal muscle. Thus, TAK1 inhibition may constitute a novel therapy for DMD.
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Affiliation(s)
- Dengqiu Xu
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Sijia Li
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Lu Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Jingwei Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Lei Zhao
- Department of Neurology, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaofei Huang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Zeren Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Chunjie Li
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Lixin Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Xihua Li
- Department of Neurology, Children's Hospital of Fudan University, Shanghai, China
| | - Zhenzhou Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China.,Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, China.,Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
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Abstract
Myocardial fibrosis, the expansion of the cardiac interstitium through deposition of extracellular matrix proteins, is a common pathophysiologic companion of many different myocardial conditions. Fibrosis may reflect activation of reparative or maladaptive processes. Activated fibroblasts and myofibroblasts are the central cellular effectors in cardiac fibrosis, serving as the main source of matrix proteins. Immune cells, vascular cells and cardiomyocytes may also acquire a fibrogenic phenotype under conditions of stress, activating fibroblast populations. Fibrogenic growth factors (such as transforming growth factor-β and platelet-derived growth factors), cytokines [including tumour necrosis factor-α, interleukin (IL)-1, IL-6, IL-10, and IL-4], and neurohumoral pathways trigger fibrogenic signalling cascades through binding to surface receptors, and activation of downstream signalling cascades. In addition, matricellular macromolecules are deposited in the remodelling myocardium and regulate matrix assembly, while modulating signal transduction cascades and protease or growth factor activity. Cardiac fibroblasts can also sense mechanical stress through mechanosensitive receptors, ion channels and integrins, activating intracellular fibrogenic cascades that contribute to fibrosis in response to pressure overload. Although subpopulations of fibroblast-like cells may exert important protective actions in both reparative and interstitial/perivascular fibrosis, ultimately fibrotic changes perturb systolic and diastolic function, and may play an important role in the pathogenesis of arrhythmias. This review article discusses the molecular mechanisms involved in the pathogenesis of cardiac fibrosis in various myocardial diseases, including myocardial infarction, heart failure with reduced or preserved ejection fraction, genetic cardiomyopathies, and diabetic heart disease. Development of fibrosis-targeting therapies for patients with myocardial diseases will require not only understanding of the functional pluralism of cardiac fibroblasts and dissection of the molecular basis for fibrotic remodelling, but also appreciation of the pathophysiologic heterogeneity of fibrosis-associated myocardial disease.
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Affiliation(s)
- Nikolaos G Frangogiannis
- Department of Medicine (Cardiology), The Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, 1300 Morris Park Avenue Forchheimer G46B, Bronx, NY 10461, USA
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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: 17] [Impact Index Per Article: 4.3] [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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Khudiakov A, Zaytseva A, Perepelina K, Smolina N, Pervunina T, Vasichkina E, Karpushev A, Tomilin A, Malashicheva A, Kostareva A. Sodium current abnormalities and deregulation of Wnt/β-catenin signaling in iPSC-derived cardiomyocytes generated from patient with arrhythmogenic cardiomyopathy harboring compound genetic variants in plakophilin 2 gene. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165915. [PMID: 32768677 DOI: 10.1016/j.bbadis.2020.165915] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 06/29/2020] [Accepted: 08/01/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND Mutations in desmosomal genes linked to arrhythmogenic cardiomyopathy are commonly associated with Wnt/β-catenin signaling abnormalities and reduction of the sodium current density. Inhibitors of GSK3B were reported to restore sodium current and improve heart function in various arrhythmogenic cardiomyopathy models, but mechanisms underlying this effect remain unclear. We hypothesized that there is a crosstalk between desmosomal proteins, signaling pathways, and cardiac sodium channels. METHODS AND RESULTS To reveal molecular mechanisms of arrhythmogenic cardiomyopathy, we established human iPSC-based model of this pathology. iPSC-derived cardiomyocytes from patient carrying two genetic variants in PKP2 gene demonstrated that PKP2 haploinsufficiency due to frameshift variant, in combination with the missense variant expressed from the second allele, was associated with decreased Wnt/β-catenin activity and reduced sodium current. Different approaches were tested to restore impaired cardiomyocytes functions, including wild type PKP2 transduction, GSK3B inhibition and Wnt/β-catenin signaling modulation. Inhibition of GSK3B led to the restoration of both Wnt/β-catenin signaling activity and sodium current density in patient-specific cardiomyocytes while GSK3B activation led to the reduction of sodium current density. Moreover, we found that upon inhibition GSK3B sodium current was restored through Wnt/β-catenin-independent mechanism. CONCLUSION We propose that alterations in GSK3B-Wnt/β-catenin signaling pathways lead to regulation of sodium current implying its role in molecular pathogenesis of arrhythmogenic cardiomyopathy.
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Affiliation(s)
| | - Anastasia Zaytseva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia; Sechenov Institute of Evolutionary Physiology and Biochemistry RAS, Saint-Petersburg, Russia
| | - Kseniya Perepelina
- Almazov National Medical Research Centre, Saint-Petersburg, Russia; Saint Petersburg State University, Saint-Petersburg, Russia
| | - Natalia Smolina
- Almazov National Medical Research Centre, Saint-Petersburg, Russia; Department of Women's and Children's Health, Center for Molecular Medicine, Karolinska Institute, Stockholm, Sweden
| | | | - Elena Vasichkina
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - Alexey Karpushev
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | | | - Anna Malashicheva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia; Saint Petersburg State University, Saint-Petersburg, Russia; Institute of Cytology RAS, Saint-Petersburg, Russia
| | - Anna Kostareva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia; Department of Women's and Children's Health, Center for Molecular Medicine, Karolinska Institute, Stockholm, Sweden
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Arrhythmogenic cardiomyopathy: An in-depth look at molecular mechanisms and clinical correlates. Trends Cardiovasc Med 2020; 31:395-402. [PMID: 32738304 DOI: 10.1016/j.tcm.2020.07.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/17/2020] [Accepted: 07/22/2020] [Indexed: 02/02/2023]
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a familial disease, with approximately 60% of patients displaying a pathogenic variant. The majority of genes linked to ACM code for components of the desmosome: plakophilin-2 (PKP2), desmoglein-2 (DSG2) and desmocollin-2 (DSC2), plakoglobin (JUP) and desmoplakin (DSP). Genetic variants involving the desmosomes are known to cause dysfunction of cell-to-cell adhesions and intercellular gap junctions. In turn, this may result in failure to mechanically hold together the cardiomyocytes, fibrofatty myocardial replacement, cardiac conduction delay and ventricular arrhythmias. It is becoming clearer that pathogenic variants in desmosomal genes such as PKP2 are not only responsible for a mechanical dysfunction of the intercalated disc (ID), but are also the cause of various pro-arrhythmic mechanisms. In this review, we discuss in detail the different molecular interactions associated with desmosomal pathogenic variants, and their contribution to various ACM phenotypes.
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Antiepithelial-Mesenchymal Transition of Herbal Active Substance in Tumor Cells via Different Signaling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9253745. [PMID: 32377312 PMCID: PMC7183534 DOI: 10.1155/2020/9253745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/06/2020] [Indexed: 12/31/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is a biological process through which epithelial cells differentiate into mesenchymal cells. EMT plays an important role in embryonic development and wound healing; however, EMT also contributes to some pathological processes, such as tumor metastasis and fibrosis. EMT mechanisms, including gene mutation and transcription factor regulation, are complicated and not yet well understood. In this review, we introduce some herbal active substances that exert antitumor activity through inhibiting EMT that is induced by hypoxia, high blood glucose level, lipopolysaccharide, or other factors.
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Cao Z, Liu W, Qu X, Bi H, Sun X, Yu Q, Cheng G. miR-296-5p inhibits IL-1β-induced apoptosis and cartilage degradation in human chondrocytes by directly targeting TGF-β1/CTGF/p38MAPK pathway. Cell Cycle 2020; 19:1443-1453. [PMID: 32378978 DOI: 10.1080/15384101.2020.1750813] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Osteoarthritis (OA) is characterized by apoptosis of chondrocytes and an imbalance of extracellular matrix (ECM) synthesis and catabolism. Emerging evidence has demonstrated that miRNAs are involved in OA pathologies, but the role of miR-296-5p in OA remains unclear. The present study proposes to reveal the functions and mechanisms of miR-296-5p in a cell model of OA. In this study, human chondrocytes were treated with 5 ml interleukin-1 beta (IL-1β) to induce apoptosis and cartilage degradation. Our results showed that miR-296-5p was downregulated in chondrocytes stimulated with IL-1β. Overexpressed miR-296-5p enhanced cell proliferation and inhibited apoptosis and matrix degrading enzyme expression in response to IL-1β stimulation, and knockdown of miR-296-5p showed the opposite effect. Further, we found that miR-296-5p directly targeted the 3'-untranslated region (3'-UTR) of TGF-β1 mRNA, and miR-296-5p inactivated the TGF-β1/CTGF/p38MAPK signaling pathway. Overexpression of TGF-β1 alleviated the inhibition of miR-296-5p on chondrocyte apoptosis and cartilage degradation. In conclusion, miR-296-5p inhibited the progression of OA through the CTGF/p38MAPK pathway by directly targeting TGF-β1.
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Affiliation(s)
- Zhilin Cao
- Department of Orthopedics, Yantaishan Hospital , Yantai, Shandong Province, China
| | - Wenguang Liu
- Department of Joint Surgery, The Second Hospital of Shandong University , Jinan, Shandong Province, China
| | - Xiaoyi Qu
- Department of Nursing, Nurse School of Yantai City of Shandong Province , China
| | - Haiyong Bi
- Department of Orthopedics, Yantaishan Hospital , Yantai, Shandong Province, China
| | - Xiujiang Sun
- Department of Orthopedics, Yantaishan Hospital , Yantai, Shandong Province, China
| | - Qian Yu
- Department of Hospital Surgary, Yantaishan Hospital , Yantai, Shandong Province, China
| | - Gong Cheng
- Department of Orthopedics, Yantaishan Hospital , Yantai, Shandong Province, China
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