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Zhang S, Niu Q, Zong W, Song Q, Tian S, Wang J, Liu J, Zhang H, Wang Z, Li B. Endotype-driven Co-module mechanisms of danhong injection in the Co-treatment of cardiovascular and cerebrovascular diseases: A modular-based drug and disease integrated analysis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118287. [PMID: 38705429 DOI: 10.1016/j.jep.2024.118287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cardiovascular and cerebrovascular diseases are the leading causes of death worldwide and interact closely with each other. Danhong Injection (DHI) is a widely used preparation for the co-treatment of brain and heart diseases (CTBH). However, the underlying molecular endotype mechanisms of DHI in the CTBH remain unclear. AIM OF THIS STUDY To elucidate the underlying endotype mechanisms of DHI in the CTBH. MATERIALS AND METHODS In this study, we proposed a modular-based disease and drug-integrated analysis (MDDIA) strategy for elucidating the systematic CTBH mechanisms of DHI using high-throughput transcriptome-wide sequencing datasets of DHI in the treatment of patients with stable angina pectoris (SAP) and cerebral infarction (CI). First, we identified drug-targeted modules of DHI and disease modules of SAP and CI based on the gene co-expression networks of DHI therapy and the protein-protein interaction networks of diseases. Moreover, module proximity-based topological analyses were applied to screen CTBH co-module pairs and driver genes of DHI. At the same time, the representative driver genes were validated via in vitro experiments on hypoxia/reoxygenation-related cardiomyocytes and neuronal cell lines of H9C2 and HT22. RESULTS Seven drug-targeted modules of DHI and three disease modules of SAP and CI were identified by co-expression networks. Five modes of modular relationships between the drug and disease modules were distinguished by module proximity-based topological analyses. Moreover, 13 targeted module pairs and 17 driver genes associated with DHI in the CTBH were also screened. Finally, the representative driver genes AKT1, EDN1, and RHO were validated by in vitro experiments. CONCLUSIONS This study, based on clinical sequencing data and modular topological analyses, integrated diseases and drug targets. The CTBH mechanism of DHI may involve the altered expression of certain driver genes (SRC, STAT3, EDN1, CYP1A1, RHO, RELA) through various enriched pathways, including the Wnt signaling pathway.
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Affiliation(s)
- Siqi Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Qikai Niu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Wenjing Zong
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Qi Song
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Siwei Tian
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Jingai Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Jun Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Huamin Zhang
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Zhong Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Bing Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
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Bhattacharyya S, Kollipara RK, Orquera-Tornakian G, Goetsch S, Zhang M, Perry C, Li B, Shelton JM, Bhakta M, Duan J, Xie Y, Xiao G, Evers BM, Hon GC, Kittler R, Munshi NV. Global chromatin landscapes identify candidate noncoding modifiers of cardiac rhythm. J Clin Invest 2023; 133:e153635. [PMID: 36454649 PMCID: PMC9888383 DOI: 10.1172/jci153635] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 11/30/2022] [Indexed: 12/03/2022] Open
Abstract
Comprehensive cis-regulatory landscapes are essential for accurate enhancer prediction and disease variant mapping. Although cis-regulatory element (CRE) resources exist for most tissues and organs, many rare - yet functionally important - cell types remain overlooked. Despite representing only a small fraction of the heart's cellular biomass, the cardiac conduction system (CCS) unfailingly coordinates every life-sustaining heartbeat. To globally profile the mouse CCS cis-regulatory landscape, we genetically tagged CCS component-specific nuclei for comprehensive assay for transposase-accessible chromatin-sequencing (ATAC-Seq) analysis. Thus, we established a global CCS-enriched CRE database, referred to as CCS-ATAC, as a key resource for studying CCS-wide and component-specific regulatory functions. Using transcription factor (TF) motifs to construct CCS component-specific gene regulatory networks (GRNs), we identified and independently confirmed several specific TF sub-networks. Highlighting the functional importance of CCS-ATAC, we also validated numerous CCS-enriched enhancer elements and suggested gene targets based on CCS single-cell RNA-Seq data. Furthermore, we leveraged CCS-ATAC to improve annotation of existing human variants related to cardiac rhythm and nominated a potential enhancer-target pair that was dysregulated by a specific SNP. Collectively, our results established a CCS-regulatory compendium, identified novel CCS enhancer elements, and illuminated potential functional associations between human genomic variants and CCS component-specific CREs.
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Affiliation(s)
| | | | | | - Sean Goetsch
- Department of Internal Medicine, Division of Cardiology
| | - Minzhe Zhang
- Quantitative Biomedical Research Center, Department of Population and Data Sciences
| | - Cameron Perry
- Department of Internal Medicine, Division of Cardiology
| | - Boxun Li
- Laboratory of Regulatory Genomics, Cecil H. and Ida Green Center for Reproductive Biology Sciences, Division of Basic Reproductive Biology Research, Department of Obstetrics and Gynecology
| | | | - Minoti Bhakta
- Department of Internal Medicine, Division of Cardiology
| | - Jialei Duan
- Laboratory of Regulatory Genomics, Cecil H. and Ida Green Center for Reproductive Biology Sciences, Division of Basic Reproductive Biology Research, Department of Obstetrics and Gynecology
| | - Yang Xie
- Quantitative Biomedical Research Center, Department of Population and Data Sciences
- Department of Bioinformatics
| | - Guanghua Xiao
- Quantitative Biomedical Research Center, Department of Population and Data Sciences
- Department of Bioinformatics
| | - Bret M. Evers
- Department of Internal Medicine, Division of Cardiology
| | - Gary C. Hon
- Laboratory of Regulatory Genomics, Cecil H. and Ida Green Center for Reproductive Biology Sciences, Division of Basic Reproductive Biology Research, Department of Obstetrics and Gynecology
- Department of Bioinformatics
- Hamon Center for Regenerative Science and Medicine, and
| | - Ralf Kittler
- McDermott Center for Human Growth and Development
| | - Nikhil V. Munshi
- Department of Internal Medicine, Division of Cardiology
- McDermott Center for Human Growth and Development
- Hamon Center for Regenerative Science and Medicine, and
- Department of Molecular Biology, UT Southwestern Medical Center, Dallas, Texas, USA
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3
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Wu SJ, He RL, Zhao L, Yu XY, Jiang YN, Guan X, Chen QY, Ren FF, Xie ZY, Wu LP, Li L. Cardiac-Specific Overexpression of Caveolin-1 in Rats With Ischemic Cardiomyopathy Improves Arrhythmogenicity and Cardiac Remodelling. Can J Cardiol 2023; 39:73-86. [PMID: 36240973 DOI: 10.1016/j.cjca.2022.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/16/2022] [Accepted: 10/04/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Ischemic cardiomyopathy (ICM) is associated with electrical and structural remodelling, leading to arrhythmias. Caveolin-1 (Cav1) is a membrane protein involved in the pathogenesis of ischemic injury. Cav1 deficiency has been associated with arrhythmogenicity. The current study aimed to determine how Cav1 overexpression inhibits arrhythmias and cardiac remodelling in ICM. METHODS ICM was modelled using left anterior descending (LAD) artery ligation for 4 weeks. Cardiac-specific Cav1 overexpression in ICM on arrhythmias, excitation-contraction coupling, and cardiac remodelling were investigated using the intramyocardial injection of an adeno-associated virus serotype 9 (AAV-9) system, carrying a specific sequence expressing Cav1 (AAVCav1) under the cardiac troponin T (cTnT) promoter. RESULTS Cav1 overexpression decreased susceptibility to arrhythmias by upregulating gap junction connexin 43 (CX43) and reducing spontaneous irregular proarrhythmogenic Ca2+ waves in ventricular cardiomyocytes. It also alleviated ischemic injury-induced contractility weakness by improving Ca2+ cycling through normalizing Ca2+-handling protein levels and improving Ca2+ homeostasis. Masson stain and immunoblotting revealed that the deposition of excessive fibrosis was attenuated by Cav1 overexpression, inhibiting the transforming growth factor-β (TGF-β)/Smad2 signalling pathway. Coimmunoprecipitation assays demonstrated that the interaction between Cav1 and cSrc modulated CX43 expression and Ca2+-handling protein levels. CONCLUSIONS Cardiac-specific overexpression of Cav1 attenuated ventricular arrhythmia, improved Ca2+ cycling, and attenuated cardiac remodelling. These effects were attributed to modulation of CX43, normalized Ca2+-handling protein levels, improved Ca2+ homeostasis, and attenuated cardiac fibrosis.
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Affiliation(s)
- Shu-Jie Wu
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Rui-Lin He
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Lin Zhao
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Xiao-Yu Yu
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Yi-Na Jiang
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Xuan Guan
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Qiao-Ying Chen
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Fang-Fang Ren
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Zuo-Yi Xie
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Lian-Pin Wu
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Lei Li
- Department of Cardiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang, China.
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Zhao X, Yang X, An Z, Liu L, Yong J, Xing H, Huang R, Tian J, Song X. Pathophysiology and molecular mechanism of caveolin involved in myocardial protection strategies in ischemic conditioning. Biomed Pharmacother 2022; 153:113282. [PMID: 35750009 DOI: 10.1016/j.biopha.2022.113282] [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: 04/27/2022] [Revised: 05/30/2022] [Accepted: 06/08/2022] [Indexed: 11/02/2022] Open
Abstract
Multiple pathophysiological pathways are activated during the process of myocardial injury. Various cardioprotective strategies protect the myocardium from ischemia, infarction, and ischemia/reperfusion (I/R) injury through different targets, yet the clinical translation remains limited. Caveolae and its structure protein, caveolins, have been suggested as a bridge to transmit damage-preventing signals and mediate the protection of ultrastructure in cardiomyocytes under pathological conditions. In this review, we first briefly introduce caveolae and caveolins. Then we review the cardioprotective strategies mediated by caveolins through various pathophysiological pathways. Finally, some possible research directions are proposed to provide future experiments and clinical translation perspectives targeting caveolin based on the investigative evidence.
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Affiliation(s)
- Xin Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Xueyao Yang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Ziyu An
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Libo Liu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Jingwen Yong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Haoran Xing
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Rongchong Huang
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, 95th Yong An Road, Xuan Wu District, Beijing 100050, PR China
| | - Jinfan Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China.
| | - Xiantao Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China.
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5
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Zhou Y, Rui S, Tang S, Ju C. Exploration of Mechanisms of Sacubitril/Valsartan in the Treatment of Cardiac Arrhythmias Using a Network Pharmacology Approach. Front Cardiovasc Med 2022; 9:829484. [PMID: 35498046 PMCID: PMC9043521 DOI: 10.3389/fcvm.2022.829484] [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: 12/05/2021] [Accepted: 03/10/2022] [Indexed: 11/23/2022] Open
Abstract
Significant reductions in the incidence of cardiac arrhythmia (CA) and sudden cardiac death (SCD), along with amelioration of heart failure, have been reported for treatment with Sacubitril/valsartan (SV). However, its anti-arrhythmic mechanism remains unclear. The current study aims to explore the anti-arrhythmic molecular mechanism of SV. The direct protein targets (DPT) of SV were extracted from DrugBank. The protein-protein interaction (PPI) network of SV DPTs was constructed using STRING, and the indirect protein targets (IPTs) were also identified. A search for arrhythmia-related genes was conducted using GeneCards and the Comparative Toxicogenomics Database (CTD). The DTPs, ITPs, and arrhythmia-related genes from the two datasets were combined in a Venn diagram, and the overlapping genes were identified as core target genes. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses identified the top 20 biological processes and signaling pathways related to disease and the therapeutic effects of SV. The renin-angiotensin system, adrenergic signaling in cardiomyocytes, and gap junction pathways are strongly implicated in the effects of SV on CA. In conclusion, our bioinformatics analyses provided evidence pertaining to the possible antiarrhythmic mechanisms of SV and may contribute to the development of novel drugs for CA.
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Affiliation(s)
- Yu Zhou
- Department of Emergency, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Shibao Rui
- Department of Cardiology, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Shengxin Tang
- Department of Cardiology, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Changlin Ju
- Department of Cardiology, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
- *Correspondence: Changlin Ju,
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6
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Caveolin-3 and Arrhythmias: Insights into the Molecular Mechanisms. J Clin Med 2022; 11:jcm11061595. [PMID: 35329921 PMCID: PMC8952412 DOI: 10.3390/jcm11061595] [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] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/02/2022] [Accepted: 03/09/2022] [Indexed: 02/07/2023] Open
Abstract
Caveolin-3 is a muscle-specific protein on the membrane of myocytes correlated with a variety of cardiovascular diseases. It is now clear that the caveolin-3 plays a critical role in the cardiovascular system and a significant role in cardiac protective signaling. Mutations in the gene encoding caveolin-3 cause a broad spectrum of clinical phenotypes, ranging from persistent elevations in the serum levels of creatine kinase in asymptomatic humans to cardiomyopathy. The influence of Caveolin-3(CAV-3) mutations on current density parallels the effect on channel trafficking. For example, mutations in the CAV-3 gene promote ventricular arrhythmogenesis in long QT syndrome 9 by a combined decrease in the loss of the inward rectifier current (IK1) and gain of the late sodium current (INa-L). The functional significance of the caveolin-3 has proved that caveolin-3 overexpression or knockdown contributes to the occurrence and development of arrhythmias. Caveolin-3 overexpression could lead to reduced diastolic spontaneous Ca2+ waves, thus leading to the abnormal L-Type calcium channel current-induced ventricular arrhythmias. Moreover, CAV-3 knockdown resulted in a shift to more negative values in the hyperpolarization-activated cyclic nucleotide channel 4 current (IHCN4) activation curve and a significant decrease in IHCN4 whole-cell current density. Recent evidence indicates that caveolin-3 plays a significant role in adipose tissue and is related to obesity development. The role of caveolin-3 in glucose homeostasis has attracted increasing attention. This review highlights the underlining mechanisms of caveolin-3 in arrhythmia. Progress in this field may contribute to novel therapeutic approaches for patients prone to developing arrhythmia.
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7
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Tsui JH, Leonard A, Camp ND, Long JT, Nawas ZY, Chavanachat R, Smith AST, Choi JS, Dong Z, Ahn EH, Wolf-Yadlin A, Murry CE, Sniadecki NJ, Kim DH. Tunable electroconductive decellularized extracellular matrix hydrogels for engineering human cardiac microphysiological systems. Biomaterials 2021; 272:120764. [PMID: 33798964 DOI: 10.1016/j.biomaterials.2021.120764] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 12/11/2022]
Abstract
Cardiomyocytes differentiated from human induced pluripotent stem cells (hiPSCs) offer tremendous potential when used to engineer human tissues for drug screening and disease modeling; however, phenotypic immaturity reduces assay reliability when translating in vitro results to clinical studies. To address this, we have developed hybrid hydrogels comprised of decellularized porcine myocardial extracellular matrix (dECM) and reduced graphene oxide (rGO) to provide a more instructive microenvironment for proper cell and tissue development. A tissue-specific protein profile was preserved post-decellularization, and through the modulation of rGO content and degree of reduction, the mechanical and electrical properties of the hydrogels could be tuned. Engineered heart tissues (EHTs) generated using dECM-rGO hydrogel scaffolds and hiPSC-derived cardiomyocytes exhibited significantly increased twitch forces and had increased expression of genes that regulate contractile function. Improvements in various aspects of electrophysiological function, such as calcium-handling, action potential duration, and conduction velocity, were also induced by the hybrid biomaterial. dECM-rGO hydrogels could also be used as a bioink to print cardiac tissues in a high-throughput manner, and these tissues were utilized to assess the proarrhythmic potential of cisapride. Action potential prolongation and beat interval irregularities was observed in dECM-rGO tissues at clinical doses of cisapride, indicating that the enhanced electrophysiological function of these tissues corresponded well with a capability to produce physiologically relevant drug responses.
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Affiliation(s)
- Jonathan H Tsui
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Andrea Leonard
- Department of Mechanical Engineering, University of Washington, Seattle, WA, 98105, USA
| | - Nathan D Camp
- Department of Genome Sciences, University of Washington, Seattle, WA, 98105, USA
| | - Joseph T Long
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
| | - Zeid Y Nawas
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA
| | | | - Alec S T Smith
- Department of Physiology and Biophysics, University of Washington, Seattle, WA, 98105, USA; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Jong Seob Choi
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Zhipeng Dong
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Eun Hyun Ahn
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | | | - Charles E Murry
- Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA; Department of Pathology, University of Washington, Seattle, WA, 98109, USA; Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Nathan J Sniadecki
- Department of Mechanical Engineering, University of Washington, Seattle, WA, 98105, USA; Department of Bioengineering, University of Washington, Seattle, WA, 98105, USA; Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Deok-Ho Kim
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA; Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, 21205, USA.
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Network-driven discovery yields new insight into Shox2-dependent cardiac rhythm control. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2021; 1864:194702. [PMID: 33706013 DOI: 10.1016/j.bbagrm.2021.194702] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 11/23/2022]
Abstract
The homeodomain transcription factor SHOX2 is involved in the development and function of the heart's primary pacemaker, the sinoatrial node (SAN), and has been associated with cardiac conduction-related diseases such as atrial fibrillation and sinus node dysfunction. To shed light on Shox2-dependent genetic processes involved in these diseases, we established a murine embryonic stem cell (ESC) cardiac differentiation model to investigate Shox2 pathways in SAN-like cardiomyocytes. Differential RNA-seq-based expression profiling of Shox2+/+ and Shox2-/- ESCs revealed 94 dysregulated transcripts in Shox2-/- ESC-derived SAN-like cells. Of these, 15 putative Shox2 target genes were selected for further validation based on comparative expression analysis with SAN- and right atria-enriched genes. Network-based analyses, integrating data from the Mouse Organogenesis Cell Atlas and the Ingenuity pathways, as well as validation in mouse and zebrafish models confirmed a regulatory role for the novel identified Shox2 target genes including Cav1, Fkbp10, Igfbp5, Mcf2l and Nr2f2. Our results indicate that genetic networks involving SHOX2 may contribute to conduction traits through the regulation of these genes.
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9
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Peper J, Kownatzki-Danger D, Weninger G, Seibertz F, Pronto JRD, Sutanto H, Pacheu-Grau D, Hindmarsh R, Brandenburg S, Kohl T, Hasenfuss G, Gotthardt M, Rog-Zielinska EA, Wollnik B, Rehling P, Urlaub H, Wegener J, Heijman J, Voigt N, Cyganek L, Lenz C, Lehnart SE. Caveolin3 Stabilizes McT1-Mediated Lactate/Proton Transport in Cardiomyocytes. Circ Res 2021; 128:e102-e120. [PMID: 33486968 DOI: 10.1161/circresaha.119.316547] [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] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Jonas Peper
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen
| | - Daniel Kownatzki-Danger
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen
| | - Gunnar Weninger
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen
| | - Fitzwilliam Seibertz
- Institute of Pharmacology and Toxicology (F.S., J.R.D.P., N.V.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.)
| | - Julius Ryan D Pronto
- Institute of Pharmacology and Toxicology (F.S., J.R.D.P., N.V.), University Medical Center Göttingen
| | - Henry Sutanto
- Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University (H.S., J.H.)
| | - David Pacheu-Grau
- Cellular Biochemistry, University Medical Center, Georg-August-University (D.P.G., P.R.)
| | - Robin Hindmarsh
- Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen
| | - Sören Brandenburg
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.)
| | - Tobias Kohl
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.)
| | - Gerd Hasenfuss
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.).,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen (G.H., B.W., P.R., N.V., S.E.L.)
| | - Michael Gotthardt
- Neuromuscular and Cardiovascular Cell Biology, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin (M.G.).,Cardiology, Virchow Klinikum, Charité-University Medicine, Berlin (M.G.).,DZHK (German Center for Cardiovascular Research), partner site Berlin (M.G.)
| | - Eva A Rog-Zielinska
- University Heart Center, Faculty of Medicine, University of Freiburg (E.A.R.-Z.)
| | - Bernd Wollnik
- Institute of Human Genetics (B.W.), University Medical Center Göttingen.,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen (G.H., B.W., P.R., N.V., S.E.L.)
| | - Peter Rehling
- Cellular Biochemistry, University Medical Center, Georg-August-University (D.P.G., P.R.).,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen (G.H., B.W., P.R., N.V., S.E.L.)
| | - Henning Urlaub
- Bioanalytics, Institute of Clinical Chemistry (H.U., C.L.), University Medical Center Göttingen.,Bioanalytical Mass Spectrometry, Max Planck Institute for Biophysical Chemistry, Göttingen (H.U., C.L.)
| | - Jörg Wegener
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.)
| | - Jordi Heijman
- Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University (H.S., J.H.)
| | - Niels Voigt
- Institute of Pharmacology and Toxicology (F.S., J.R.D.P., N.V.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.).,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen (G.H., B.W., P.R., N.V., S.E.L.)
| | - Lukas Cyganek
- DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.)
| | - Christof Lenz
- Bioanalytics, Institute of Clinical Chemistry (H.U., C.L.), University Medical Center Göttingen.,Bioanalytical Mass Spectrometry, Max Planck Institute for Biophysical Chemistry, Göttingen (H.U., C.L.)
| | - Stephan E Lehnart
- Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen (J.P., D.K.-D., G.W., S.B., T.K., G.H., J.W., S.E.L.), University Medical Center Göttingen.,Cardiology & Pneumology (J.P., D.K.-D., G.W., R.H., S.B., T.K., G.H., J.W., L.C., S.E.L.), University Medical Center Göttingen.,DZHK (German Centre for Cardiovascular Research), partner site Göttingen (F.S., S.B., T.K., G.H., J.W., N.V., L.C., S.E.L.).,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen (G.H., B.W., P.R., N.V., S.E.L.).,BioMET, Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore (S.E.L.)
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10
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Andelova K, Egan Benova T, Szeiffova Bacova B, Sykora M, Prado NJ, Diez ER, Hlivak P, Tribulova N. Cardiac Connexin-43 Hemichannels and Pannexin1 Channels: Provocative Antiarrhythmic Targets. Int J Mol Sci 2020; 22:ijms22010260. [PMID: 33383853 PMCID: PMC7795512 DOI: 10.3390/ijms22010260] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 12/12/2022] Open
Abstract
Cardiac connexin-43 (Cx43) creates gap junction channels (GJCs) at intercellular contacts and hemi-channels (HCs) at the peri-junctional plasma membrane and sarcolemmal caveolae/rafts compartments. GJCs are fundamental for the direct cardiac cell-to-cell transmission of electrical and molecular signals which ensures synchronous myocardial contraction. The HCs and structurally similar pannexin1 (Panx1) channels are active in stressful conditions. These channels are essential for paracrine and autocrine communication through the release of ions and signaling molecules to the extracellular environment, or for uptake from it. The HCs and Panx1 channel-opening profoundly affects intracellular ionic homeostasis and redox status and facilitates via purinergic signaling pro-inflammatory and pro-fibrotic processes. These conditions promote cardiac arrhythmogenesis due to the impairment of the GJCs and selective ion channel function. Crosstalk between GJCs and HCs/Panx1 channels could be crucial in the development of arrhythmogenic substrates, including fibrosis. Despite the knowledge gap in the regulation of these channels, current evidence indicates that HCs and Panx1 channel activation can enhance the risk of cardiac arrhythmias. It is extremely challenging to target HCs and Panx1 channels by inhibitory agents to hamper development of cardiac rhythm disorders. Progress in this field may contribute to novel therapeutic approaches for patients prone to develop atrial or ventricular fibrillation.
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Affiliation(s)
- Katarina Andelova
- Centre of Experimental Medicine, Slovak Academy of Sciences, Institute for Heart Research, 84104 Bratislava, Slovakia; (K.A.); (T.E.B.); (B.S.B.); (M.S.)
| | - Tamara Egan Benova
- Centre of Experimental Medicine, Slovak Academy of Sciences, Institute for Heart Research, 84104 Bratislava, Slovakia; (K.A.); (T.E.B.); (B.S.B.); (M.S.)
| | - Barbara Szeiffova Bacova
- Centre of Experimental Medicine, Slovak Academy of Sciences, Institute for Heart Research, 84104 Bratislava, Slovakia; (K.A.); (T.E.B.); (B.S.B.); (M.S.)
| | - Matus Sykora
- Centre of Experimental Medicine, Slovak Academy of Sciences, Institute for Heart Research, 84104 Bratislava, Slovakia; (K.A.); (T.E.B.); (B.S.B.); (M.S.)
| | - Natalia Jorgelina Prado
- Instituto de Medicina y Biología Experimental de Cuyo, Consejo Nacional de Investigaciones Científicas y Técnicas, M5500 Mendoza, Argentina; (N.J.P.); (E.R.D.)
| | - Emiliano Raul Diez
- Instituto de Medicina y Biología Experimental de Cuyo, Consejo Nacional de Investigaciones Científicas y Técnicas, M5500 Mendoza, Argentina; (N.J.P.); (E.R.D.)
| | - Peter Hlivak
- Department of Arrhythmias and Pacing, National Institute of Cardiovascular Diseases, Pod Krásnou Hôrkou 1, 83348 Bratislava, Slovakia;
| | - Narcis Tribulova
- Centre of Experimental Medicine, Slovak Academy of Sciences, Institute for Heart Research, 84104 Bratislava, Slovakia; (K.A.); (T.E.B.); (B.S.B.); (M.S.)
- Correspondence: ; Tel.: +421-2-32295-423
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11
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Russell JS, Griffith TA, Naghipour S, Vider J, Du Toit EF, Patel HH, Peart JN, Headrick JP. Dietary α-Linolenic Acid Counters Cardioprotective Dysfunction in Diabetic Mice: Unconventional PUFA Protection. Nutrients 2020; 12:nu12092679. [PMID: 32887376 PMCID: PMC7551050 DOI: 10.3390/nu12092679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/12/2020] [Accepted: 08/26/2020] [Indexed: 12/15/2022] Open
Abstract
Whether dietary omega-3 (n-3) polyunsaturated fatty acid (PUFA) confers cardiac benefit in cardiometabolic disorders is unclear. We test whether dietary -linolenic acid (ALA) enhances myocardial resistance to ischemia-reperfusion (I-R) and responses to ischemic preconditioning (IPC) in type 2 diabetes (T2D); and involvement of conventional PUFA-dependent mechanisms (caveolins/cavins, kinase signaling, mitochondrial function, and inflammation). Eight-week male C57Bl/6 mice received streptozotocin (75 mg/kg) and 21 weeks high-fat/high-carbohydrate feeding. Half received ALA over six weeks. Responses to I-R/IPC were assessed in perfused hearts. Localization and expression of caveolins/cavins, protein kinase B (AKT), and glycogen synthase kinase-3 β (GSK3β); mitochondrial function; and inflammatory mediators were assessed. ALA reduced circulating leptin, without affecting body weight, glycemic dysfunction, or cholesterol. While I-R tolerance was unaltered, paradoxical injury with IPC was reversed to cardioprotection with ALA. However, post-ischemic apoptosis (nucleosome content) appeared unchanged. Benefit was not associated with shifts in localization or expression of caveolins/cavins, p-AKT, p-GSK3β, or mitochondrial function. Despite mixed inflammatory mediator changes, tumor necrosis factor-a (TNF-a) was markedly reduced. Data collectively reveal a novel impact of ALA on cardioprotective dysfunction in T2D mice, unrelated to caveolins/cavins, mitochondrial, or stress kinase modulation. Although evidence suggests inflammatory involvement, the basis of this "un-conventional" protection remains to be identified.
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Affiliation(s)
- Jake S. Russell
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Tia A. Griffith
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Saba Naghipour
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Jelena Vider
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Eugene F. Du Toit
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Hemal H. Patel
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, CA 92093, USA;
| | - Jason N. Peart
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - John P. Headrick
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
- Correspondence: ; Tel.: +61-7-5552-8292
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12
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Potential causal association of a prolonged PR interval and clinical recurrence of atrial fibrillation after catheter ablation: a Mendelian randomization analysis. J Hum Genet 2020; 65:813-821. [PMID: 32409696 DOI: 10.1038/s10038-020-0774-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/26/2020] [Accepted: 04/30/2020] [Indexed: 11/08/2022]
Abstract
A prolonged PR interval predicts atrial fibrillation (AF) recurrence after catheter ablation. We investigated the causal association between the PR interval and AF clinical recurrence by a Mendelian randomization. We prospectively included 1722 patients with AF (73.2% male, 58.6 ± 10.8 years old, 71.3% paroxysmal AF) who underwent catheter ablation into a genome-wide association study (GWAS). We searched for the genetic associations between the PR interval and AF recurrence by analyzing 44 single nucleotide polymorphisms (SNPs) already known to be associated with the PR interval, and investigated the Mendelian randomization. Based on the quartile analysis, the highest quartile of the PR interval was associated with an increased risk of AF recurrence compared with the lowest quartile (Hazard ratio (HR) = 1.91, 95% CI = 1.51-2.42, P = 8.41 × 10-8) during 35.7 ± 28.5 months of follow-up. Among 44 SNPs known to be associated with the PR interval, two SNPs had significant associations with the PR interval (P < 0.001 for each SNP). CAV1 (HR = 1.15, 95% CI = 1.02-1.31, P = 0.024) was associated with clinical recurrence of AF. A Mendelian randomization analysis demonstrated a significant association with CAV1 (HR = 1.04, 95% CI = 1.01-1.07, P = 0.006). A prolonged PR interval was a risk factor for an AF recurrence, and the PR interval had a potentially causal association with an AF clinical recurrence after catheter ablation at the genetic level.
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13
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High hydrostatic pressure induces atrial electrical remodeling through angiotensin upregulation mediating FAK/Src pathway activation. J Mol Cell Cardiol 2020; 140:10-21. [PMID: 32006532 DOI: 10.1016/j.yjmcc.2020.01.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 01/15/2020] [Accepted: 01/27/2020] [Indexed: 01/02/2023]
Abstract
Hypertension is an independent risk factor for atrial fibrillation (AF), although its specific mechanisms remain unclear. Previous research has been focused on cyclic stretch, ignoring the role of high hydrostatic pressure. The present study aimed to explore the effect of high hydrostatic pressure stimulation on electrical remodeling in atrial myocytes and its potential signaling pathways. Experiments were performed on left atrial appendages from patients with chronic AF or sinus rhythm, spontaneously hypertensive rats (SHRs) treated with or without valsartan (10 mg/kg/day) and HL-1 cells were exposed to high hydrostatic pressure using a self-developed device. Whole-cell patch-clamp recordings and western blots demonstrated that the amplitudes of ICa,L, Ito, and IKur were reduced in AF patients with corresponding changes in protein expression. Angiotensin protein levels increased and Ang1-7 decreased, while focal adhesion kinase (FAK) and Src kinase were enhanced in atrial tissue from AF patients and SHRs. After rapid atrial pacing, AF inducibility in SHR was significantly higher, accompanied by a decrease in ICa,L, upregulation of Ito and IKur, and a shortened action potential duration. Angiotensin upregulation and FAK/Src activation in SHR were inhibited by angiotensin type 1 receptor inhibitor valsartan, thus, preventing electrical remodeling and reducing AF susceptibility. These results were verified in HL-1 cells treated with high hydrostatic pressure, and demonstrated that electrical remodeling regulated by the FAK-Src pathway could be modulated by valsartan. The present study indicated that high hydrostatic pressure stimulation increases AF susceptibility by activating the renin-angiotensin system and FAK-Src pathway in atrial myocytes.
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14
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Role of Caveolin-1 in Diabetes and Its Complications. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9761539. [PMID: 32082483 PMCID: PMC7007939 DOI: 10.1155/2020/9761539] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/10/2019] [Accepted: 12/26/2019] [Indexed: 12/25/2022]
Abstract
It is estimated that in 2017 there were 451 million people with diabetes worldwide. These figures are expected to increase to 693 million by 2045; thus, innovative preventative programs and treatments are a necessity to fight this escalating pandemic disorder. Caveolin-1 (CAV1), an integral membrane protein, is the principal component of caveolae in membranes and is involved in multiple cellular functions such as endocytosis, cholesterol homeostasis, signal transduction, and mechanoprotection. Previous studies demonstrated that CAV1 is critical for insulin receptor-mediated signaling, insulin secretion, and potentially the development of insulin resistance. Here, we summarize the recent progress on the role of CAV1 in diabetes and diabetic complications.
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15
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Xiao N, Yang BF, Shi JZ, Yu YG, Zhang F, Miao Q, Li DR. Karoshi May Be a Consequence of Overwork-Related Malignant Arrhythmia. Med Sci Monit 2019; 25:357-364. [PMID: 30635549 PMCID: PMC6339454 DOI: 10.12659/msm.911685] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Karoshi, which is sudden death associated with overwork, has become a serious problem in China. Many studies have examined the relationship between cardiovascular risks and karoshi, but there is little evidence that explains the exact mechanism by which overwork induces sudden death. In these cases, there are few obvious positive findings from forensic autopsies except for histories of overwork prior to death. Therefore, we assume that abnormalities, such as cardiac arrhythmia, rather than organic changes are the cause of karoshi. Material/Methods In the present study, the forced swim test (FST) was used to establish models of overwork. The myocardial tissues of SD rats taking FST (1 h per day, for 30 consecutive days) were collected. The arrhythmia-related molecule CX43 as well as its upstream regulation molecule Cav-1 and cSrc were tested by Western blot (WB) and immunohistochemistry (IHC). HE staining and Masson‘s staining were performed in the myocardium tissue section. Results We observed downregulation of caveolin-1 (Cav1) followed by cSrc activation, resulting in the decrease of connexin43 (Cx43) levels in overwork models. Myocardial interstitial fibrosis, which is associated with electrophysiological aberrances that result in arrhythmia, was also found in the overwork models. Conclusions These data provide a mechanistic explanation for the speculated link between karoshi and cardiac arrhythmias.
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Affiliation(s)
- Ning Xiao
- School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China (mainland).,Department of Orthopedics, Yiling Hospital of Yichang, Yichang, Hubei, China (mainland)
| | - Bo-Fan Yang
- School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China (mainland)
| | - Jing-Zhuo Shi
- School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China (mainland)
| | - Yan-Geng Yu
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou, Guangdong, China (mainland)
| | - Fu Zhang
- Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou, Guangdong, China (mainland)
| | - Qi Miao
- School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China (mainland)
| | - Dong-Ri Li
- School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China (mainland)
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16
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Abstract
Although the mechanism of sudden cardiac death (SCD) in heart failure is not completely known, genetic variations are known to play key roles in this process. Increasing numbers of mutations and variants are being discovered through genome-wide association studies. The genetic variations involved in the mechanisms of SCD have aroused widespread concern. Comprehensive understanding of the genetic variations involved in SCD may help prevent it. To this end, we briefly reviewed the genetic variations involved in SCD and their associations and interactions, and observed that cardiac ion channels are the core molecules involved in this process. Genetic variations involved in cardiac structure, cardiogenesis and development, cell division and differentiation, and DNA replication and transcription are all speculated to be loci involved in SCD. Additionally, the systems involved in neurohumoral regulation as well as substance and energy metabolism are also potentially responsible for susceptibility to SCD. They form an elaborate network and mutually interact with each other to govern the fate of SCD-susceptible individuals.
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17
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Schilling JM, Head BP, Patel HH. Caveolins as Regulators of Stress Adaptation. Mol Pharmacol 2018; 93:277-285. [PMID: 29358220 DOI: 10.1124/mol.117.111237] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 01/19/2018] [Indexed: 12/21/2022] Open
Abstract
Caveolins have been recognized over the past few decades as key regulators of cell physiology. They are ubiquitously expressed and regulate a number of processes that ultimately impact efficiency of cellular processes. Though not critical to life, they are central to stress adaptation in a number of organs. The following review will focus specifically on the role of caveolin in stress adaptation in the heart, brain, and eye, three organs that are susceptible to acute and chronic stress and that show as well declining function with age. In addition, we consider some novel molecular mechanisms that may account for this stress adaptation and also offer potential to drive the future of caveolin research.
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Affiliation(s)
- Jan M Schilling
- Veterans Administration San Diego Healthcare System and Department of Anesthesiology, UCSD School of Medicine, San Diego, California
| | - Brian P Head
- Veterans Administration San Diego Healthcare System and Department of Anesthesiology, UCSD School of Medicine, San Diego, California
| | - Hemal H Patel
- Veterans Administration San Diego Healthcare System and Department of Anesthesiology, UCSD School of Medicine, San Diego, California
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18
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Bonini MG, Sargis RM. Environmental Toxicant Exposures and Type 2 Diabetes Mellitus: Two Interrelated Public Health Problems on the Rise. CURRENT OPINION IN TOXICOLOGY 2017; 7:52-59. [PMID: 29392186 DOI: 10.1016/j.cotox.2017.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Rates of type 2 diabetes mellitus (T2DM) are rising rapidly across the globe and the impact of this devastating disease threatens to plague the 21st century. While some contributing factors are well-recognized (e.g. sedentary lifestyles and caloric excess), others diabetes-promoting risk factors are less established or poorly appreciated. The latter category includes environmental exposures to diabetogenic contaminants. Herein we review some of the latest concepts and mechanisms by which environmental exposures may contribute to rising rates of T2DM with a particular focus on mechanisms involving mitochondrial dysfunction and imbalances in reactive oxygen species (ROS). Furthermore, while the pathogenesis of diabetes includes impairments in insulin sensitivity as well as insulin secretion, we will specifically delve into the links between environmental exposures to toxicants such as arsenic and disruptions in insulin release from pancreatic β-cells. Since β-cell death or dysfunction lies at the heart of both T2DM as well as type 1 diabetes mellitus (T1DM), environmental endocrine disrupting chemicals (EDCs) that disrupt the production or regulated release of the glucose-lowering hormone insulin are likely contributors to diabetes risk. Importantly, understanding the contribution of toxicants to diabetes risk as well as improved understanding of their mechanisms of action offer unique opportunities to modulate diabetes risk via targeted therapeutics or public policy interventions to reduce and remediate exposures.
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Affiliation(s)
- Marcelo G Bonini
- Department of Pathology, University of Illinois at Chicago, Chicago, IL, USA
| | - Robert M Sargis
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
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19
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Li X, Rao F, Deng CY, Wei W, Liu FZ, Yang H, Wang ZY, Kuang SJ, Chen XY, Xue YM, Wu SL. Involvement of ERK1/2 in Cx43 depression induced by macrophage migration inhibitory factor in atrial myocytes. Clin Exp Pharmacol Physiol 2017; 44:771-778. [PMID: 28429502 DOI: 10.1111/1440-1681.12766] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/19/2017] [Accepted: 03/31/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Xin Li
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
| | - Fang Rao
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
- Research Center of Medical Sciences; Guangdong General Hospital; Guangzhou China
| | - Chun-Yu Deng
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
- Research Center of Medical Sciences; Guangdong General Hospital; Guangzhou China
| | - Wei Wei
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
| | - Fang-Zhou Liu
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
| | - Hui Yang
- Guangdong Academy of Medical Sciences; Guangzhou China
- Research Center of Medical Sciences; Guangdong General Hospital; Guangzhou China
| | - Zhao-Yu Wang
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
| | - Su-Juan Kuang
- Guangdong Academy of Medical Sciences; Guangzhou China
- Research Center of Medical Sciences; Guangdong General Hospital; Guangzhou China
| | - Xiao-Yan Chen
- Guangdong Academy of Medical Sciences; Guangzhou China
- Research Center of Medical Sciences; Guangdong General Hospital; Guangzhou China
| | - Yu-Mei Xue
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
| | - Shu-Lin Wu
- Department of Cardiology; Guangdong Cardiovascular Institute; Guangzhou China
- Guangdong Academy of Medical Sciences; Guangzhou China
- Research Center of Medical Sciences; Guangdong General Hospital; Guangzhou China
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20
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Caveolin-1 regulates cancer cell metabolism via scavenging Nrf2 and suppressing MnSOD-driven glycolysis. Oncotarget 2016; 7:308-22. [PMID: 26543228 PMCID: PMC4808000 DOI: 10.18632/oncotarget.5687] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 10/16/2015] [Indexed: 12/30/2022] Open
Abstract
Aerobic glycolysis is an indispensable component of aggressive cancer cell metabolism. It also distinguishes cancer cells from most healthy cell types in the body. Particularly for this reason, targeting the metabolism to improve treatment outcomes has long been perceived as a potentially valuable strategy. In practice, however, our limited knowledge of why and how metabolic reprogramming occurs has prevented progress towards therapeutic interventions that exploit the metabolic peculiarities of tumors. We recently described that in breast cancer, MnSOD upregulation is both necessary and sufficient to activate glycolysis. Here, we focused on determining the molecular mechanisms of MnSOD upregulation. We found that Caveolin-1 (Cav-1) is a central component of this mechanism due to its suppressive effects of NF-E2-related factor 2 (Nrf2), a transcription factor upstream of MnSOD. In transformed MCF10A(Er/Src) cells, Cav-1 loss preceded the activation of Nrf2 and its induction of MnSOD expression. Consistently, with previous observations, MnSOD expression secondary to Nrf2 activation led to an increase in the glycolytic rate dependent on mtH2O2 production and the activation of AMPK. Moreover, rescue of Cav-1 expression in a breast cancer cell line (MCF7) suppressed Nrf2 and reduced MnSOD expression. Experimental data were reinforced by epidemiologic nested case-control studies showing that Cav-1 and MnSOD are inversely expressed in cases of invasive ductal carcinoma, with low Cav-1 and high MnSOD expression being associated with lower 5-year survival rates and molecular subtypes with poorest prognosis.
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21
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See Hoe LE, May LT, Headrick JP, Peart JN. Sarcolemmal dependence of cardiac protection and stress-resistance: roles in aged or diseased hearts. Br J Pharmacol 2016; 173:2966-91. [PMID: 27439627 DOI: 10.1111/bph.13552] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 06/27/2016] [Accepted: 06/28/2016] [Indexed: 12/25/2022] Open
Abstract
Disruption of the sarcolemmal membrane is a defining feature of oncotic death in cardiac ischaemia-reperfusion (I-R), and its molecular makeup not only fundamentally governs this process but also affects multiple determinants of both myocardial I-R injury and responsiveness to cardioprotective stimuli. Beyond the influences of membrane lipids on the cytoprotective (and death) receptors intimately embedded within this bilayer, myocardial ionic homeostasis, substrate metabolism, intercellular communication and electrical conduction are all sensitive to sarcolemmal makeup, and critical to outcomes from I-R. As will be outlined in this review, these crucial sarcolemmal dependencies may underlie not only the negative effects of age and common co-morbidities on myocardial ischaemic tolerance but also the on-going challenge of implementing efficacious cardioprotection in patients suffering accidental or surgically induced I-R. We review evidence for the involvement of sarcolemmal makeup changes in the impairment of stress-resistance and cardioprotection observed with ageing and highly prevalent co-morbid conditions including diabetes and hypercholesterolaemia. A greater understanding of membrane changes with age/disease, and the inter-dependences of ischaemic tolerance and cardioprotection on sarcolemmal makeup, can facilitate the development of strategies to preserve membrane integrity and cell viability, and advance the challenging goal of implementing efficacious 'cardioprotection' in clinically relevant patient cohorts. Linked Articles This article is part of a themed section on Molecular Pharmacology of G Protein-Coupled Receptors. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v173.20/issuetoc.
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Affiliation(s)
- Louise E See Hoe
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.,Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia
| | - Lauren T May
- Monash Institute of Pharmaceutical Sciences, Monash University, Clayton, VIC, Australia
| | - John P Headrick
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia
| | - Jason N Peart
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.
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22
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Zhang L, Ren Z, Yang Q, Ding G. Csk regulates angiotensin II-induced podocyte apoptosis. Apoptosis 2016; 21:846-55. [DOI: 10.1007/s10495-016-1256-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Pogoda K, Kameritsch P, Retamal MA, Vega JL. Regulation of gap junction channels and hemichannels by phosphorylation and redox changes: a revision. BMC Cell Biol 2016; 17 Suppl 1:11. [PMID: 27229925 PMCID: PMC4896245 DOI: 10.1186/s12860-016-0099-3] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Post-translational modifications of connexins play an important role in the regulation of gap junction and hemichannel permeability. The prerequisite for the formation of functional gap junction channels is the assembly of connexin proteins into hemichannels and their insertion into the membrane. Hemichannels can affect cellular processes by enabling the passage of signaling molecules between the intracellular and extracellular space. For the intercellular communication hemichannels from one cell have to dock to its counterparts on the opposing membrane of an adjacent cell to allow the transmission of signals via gap junctions from one cell to the other. The controlled opening of hemichannels and gating properties of complete gap junctions can be regulated via post-translational modifications of connexins. Not only channel gating, but also connexin trafficking and assembly into hemichannels can be affected by post-translational changes. Recent investigations have shown that connexins can be modified by phosphorylation/dephosphorylation, redox-related changes including effects of nitric oxide (NO), hydrogen sulfide (H2S) or carbon monoxide (CO), acetylation, methylation or ubiquitination. Most of the connexin isoforms are known to be phosphorylated, e.g. Cx43, one of the most studied connexin at all, has 21 reported phosphorylation sites. In this review, we provide an overview about the current knowledge and relevant research of responsible kinases, connexin phosphorylation sites and reported effects on gap junction and hemichannel regulation. Regarding the effects of oxidants we discuss the role of NO in different cell types and tissues and recent studies about modifications of connexins by CO and H2S.
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Affiliation(s)
- Kristin Pogoda
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München and Munich University Hospital, München, Germany. .,DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, München, Germany.
| | - Petra Kameritsch
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München and Munich University Hospital, München, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, München, Germany
| | - Mauricio A Retamal
- Centro de Fisiología Celular e Integrativa, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | - José L Vega
- Experimental Physiology Laboratory (EPhyL), Antofagasta Institute, Universidad de Antofagasta, Antofagasta, Chile
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24
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Zimnicka AM, Husain YS, Shajahan AN, Sverdlov M, Chaga O, Chen Z, Toth PT, Klomp J, Karginov AV, Tiruppathi C, Malik AB, Minshall RD. Src-dependent phosphorylation of caveolin-1 Tyr-14 promotes swelling and release of caveolae. Mol Biol Cell 2016; 27:2090-106. [PMID: 27170175 PMCID: PMC4927282 DOI: 10.1091/mbc.e15-11-0756] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 05/05/2016] [Indexed: 11/18/2022] Open
Abstract
Src-induced phosphorylation of Cav-1 is analyzed using live TIRF and FRET microscopy, as well as by biochemical analysis. Cav1 phosphorylation destabilizes plasma membrane–associated Cav-1 oligomers and thereby is crucial for regulating the fission of caveolae from the plasma membrane in vascular endothelial cells. Caveolin 1 (Cav1) is a required structural component of caveolae, and its phosphorylation by Src is associated with an increase in caveolae-mediated endocytosis. Here we demonstrate, using quantitative live-cell 4D, TIRF, and FRET imaging, that endocytosis and trafficking of caveolae are associated with a Cav1 Tyr-14 phosphorylation-dependent conformational change, which spatially separates, or loosens, Cav1 molecules within the oligomeric caveolar coat. When tracked by TIRF and spinning-disk microscopy, cells expressing phosphomimicking Cav1 (Y14D) mutant formed vesicles that were greater in number and volume than with Y14F-Cav1-GFP. Furthermore, we observed in HEK cells cotransfected with wild-type, Y14D, or Y14F Cav1-CFP and -YFP constructs that FRET efficiency was greater with Y14F pairs than with Y14D, indicating that pY14-Cav1 regulates the spatial organization of Cav1 molecules within the oligomer. In addition, albumin-induced Src activation or direct activation of Src using a rapamycin-inducible Src construct (RapR-Src) led to an increase in monomeric Cav1 in Western blots, as well as a simultaneous increase in vesicle number and decrease in FRET intensity, indicative of a Src-mediated conformational change in CFP/YFP-tagged WT-Cav1 pairs. We conclude that phosphorylation of Cav1 leads to separation or “spreading” of neighboring negatively charged N-terminal phosphotyrosine residues, promoting swelling of caveolae, followed by their release from the plasma membrane.
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Affiliation(s)
- Adriana M Zimnicka
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Yawer S Husain
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Ayesha N Shajahan
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Maria Sverdlov
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Oleg Chaga
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Zhenlong Chen
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | - Peter T Toth
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Jennifer Klomp
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Andrei V Karginov
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | | | - Asrar B Malik
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612 Center for Lung and Vascular Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612
| | - Richard D Minshall
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL 60612 Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL 60612 Center for Lung and Vascular Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612
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25
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Schilling JM, Horikawa YT, Zemljic-Harpf AE, Vincent KP, Tyan L, Yu JK, McCulloch AD, Balijepalli RC, Patel HH, Roth DM. Electrophysiology and metabolism of caveolin-3-overexpressing mice. Basic Res Cardiol 2016; 111:28. [PMID: 27023865 DOI: 10.1007/s00395-016-0542-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 02/17/2016] [Indexed: 10/22/2022]
Abstract
Caveolin-3 (Cav-3) plays a critical role in organizing signaling molecules and ion channels involved in cardiac conduction and metabolism. Mutations in Cav-3 are implicated in cardiac conduction abnormalities and myopathies. Additionally, cardiac-specific overexpression of Cav-3 (Cav-3 OE) is protective against ischemic and hypertensive injury, suggesting a potential role for Cav-3 in basal cardiac electrophysiology and metabolism involved in stress adaptation. We hypothesized that overexpression of Cav-3 may alter baseline cardiac conduction and metabolism. We examined: (1) ECG telemetry recordings at baseline and during pharmacological interventions, (2) ion channels involved in cardiac conduction with immunoblotting and computational modeling, and (3) baseline metabolism in Cav-3 OE and transgene-negative littermate control mice. Cav-3 OE mice had decreased heart rates, prolonged PR intervals, and shortened QTc intervals with no difference in activity compared to control mice. Dobutamine or propranolol did not cause significant changes between experimental groups in maximal (dobutamine) or minimal (propranolol) heart rate. Cav-3 OE mice had an overall lower chronotropic response to atropine. The expression of Kv1.4 and Kv4.3 channels, Nav1.5 channels, and connexin 43 were increased in Cav-3 OE mice. A computational model integrating the immunoblotting results indicated shortened action potential duration in Cav-3 OE mice linking the change in channel expression to the observed electrophysiology phenotype. Metabolic profiling showed no gross differences in VO2, VCO2, respiratory exchange ratio, heat generation, and feeding or drinking. In conclusion, Cav-3 OE mice have changes in ECG intervals, heart rates, and cardiac ion channel expression. These findings give novel mechanistic insights into previously reported Cav-3 dependent cardioprotection.
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Affiliation(s)
- Jan M Schilling
- Veterans Affairs San Diego Healthcare System, San Diego, CA, USA.,Department of Anesthesiology, University of California San Diego, La Jolla, CA, USA
| | - Yousuke T Horikawa
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA.,Department of Pediatrics, Sharp Rees-Stealy Medical Group, San Diego, CA, USA
| | - Alice E Zemljic-Harpf
- Veterans Affairs San Diego Healthcare System, San Diego, CA, USA.,Department of Anesthesiology, University of California San Diego, La Jolla, CA, USA
| | - Kevin P Vincent
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
| | - Leonid Tyan
- Department of Medicine, Cellular and Molecular Arrhythmia Research Program, University of Wisconsin, Madison, WI, USA
| | - Judith K Yu
- Department of Anesthesiology, University of California San Diego, La Jolla, CA, USA
| | - Andrew D McCulloch
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA.,Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Ravi C Balijepalli
- Department of Medicine, Cellular and Molecular Arrhythmia Research Program, University of Wisconsin, Madison, WI, USA
| | - Hemal H Patel
- Veterans Affairs San Diego Healthcare System, San Diego, CA, USA.,Department of Anesthesiology, University of California San Diego, La Jolla, CA, USA
| | - David M Roth
- Veterans Affairs San Diego Healthcare System, San Diego, CA, USA. .,Department of Anesthesiology, University of California San Diego, La Jolla, CA, USA.
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26
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miRNA-target network reveals miR-124as a key miRNA contributing to clear cell renal cell carcinoma aggressive behaviour by targeting CAV1 and FLOT1. Oncotarget 2016; 6:12543-57. [PMID: 26002553 PMCID: PMC4494957 DOI: 10.18632/oncotarget.3815] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 03/11/2015] [Indexed: 11/25/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is an aggressive tumor with frequent metastatic rate and poor survival. Integrated analyses allow understanding the interplay between different levels of molecular alterations. We integrated miRNA and gene expression data from 458 ccRCC and 254 normal kidney specimens to construct a miRNA-target interaction network. We identified the downregulated miR-124-3p, -30a-5p and -200c-3p as the most influential miRNAs in RCC pathogenesis.miR-124-3p and miR-200c-3p expression showed association with patient survival, miR-30a-5p was downregulated in metastases compared to primary tumors. We used an independent set of 87 matched samples for validation. We confirmed the functional impact of these miRNAs by in vitro assays. Restoration of these miRNAs reduced migration, invasion and proliferation. miR-124-3p decreased the S phase of cell cycle, as well. We compared transcriptome profiling before and after miRNA overexpression, and validated CAV1 and FLOT1 as miR-124-3p targets. Patients with higher CAV1 and FLOT1 had lower miR-124-3p expression and shorter overall survival. We hypothesize that these three miRNAs are fundamental contributing to ccRCC aggressive/metastatic behavior; and miR-124-3p especially has a key role through regulating CAV1 and FLOT1 expression. Restoration of the levels of these miRNAs could be considered as a potential therapeutic strategy for ccRCC.
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27
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Yang KC, Kyle JW, Makielski JC, Dudley SC. Mechanisms of sudden cardiac death: oxidants and metabolism. Circ Res 2015; 116:1937-55. [PMID: 26044249 PMCID: PMC4458707 DOI: 10.1161/circresaha.116.304691] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Accepted: 02/09/2015] [Indexed: 02/07/2023]
Abstract
Ventricular arrhythmia is the leading cause of sudden cardiac death (SCD). Deranged cardiac metabolism and abnormal redox state during cardiac diseases foment arrhythmogenic substrates through direct or indirect modulation of cardiac ion channel/transporter function. This review presents current evidence on the mechanisms linking metabolic derangement and excessive oxidative stress to ion channel/transporter dysfunction that predisposes to ventricular arrhythmias and SCD. Because conventional antiarrhythmic agents aiming at ion channels have proven challenging to use, targeting arrhythmogenic metabolic changes and redox imbalance may provide novel therapeutics to treat or prevent life-threatening arrhythmias and SCD.
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Affiliation(s)
- Kai-Chien Yang
- From the Department of Pharmacology (K.-C.Y.) and Division of Cardiology, Department of Internal Medicine (K.-C.Y.), National Taiwan University Hospital, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin, Madison (J.W.K., J.C.M.); and Lifespan Cardiovascular Institute, the Providence VA Medical Center, and Brown University, RI (S.C.D.)
| | - John W Kyle
- From the Department of Pharmacology (K.-C.Y.) and Division of Cardiology, Department of Internal Medicine (K.-C.Y.), National Taiwan University Hospital, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin, Madison (J.W.K., J.C.M.); and Lifespan Cardiovascular Institute, the Providence VA Medical Center, and Brown University, RI (S.C.D.)
| | - Jonathan C Makielski
- From the Department of Pharmacology (K.-C.Y.) and Division of Cardiology, Department of Internal Medicine (K.-C.Y.), National Taiwan University Hospital, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin, Madison (J.W.K., J.C.M.); and Lifespan Cardiovascular Institute, the Providence VA Medical Center, and Brown University, RI (S.C.D.).
| | - Samuel C Dudley
- From the Department of Pharmacology (K.-C.Y.) and Division of Cardiology, Department of Internal Medicine (K.-C.Y.), National Taiwan University Hospital, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin, Madison (J.W.K., J.C.M.); and Lifespan Cardiovascular Institute, the Providence VA Medical Center, and Brown University, RI (S.C.D.).
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28
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Schilling JM, Roth DM, Patel HH. Caveolins in cardioprotection - translatability and mechanisms. Br J Pharmacol 2015; 172:2114-25. [PMID: 25377989 DOI: 10.1111/bph.13009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 10/27/2014] [Accepted: 11/03/2014] [Indexed: 12/24/2022] Open
Abstract
Translation of preclinical treatments for ischaemia-reperfusion injury into clinical therapies has been limited by a number of factors. This review will focus on a single mode of cardiac protection related to a membrane scaffolding protein, caveolin, which regulates protective signalling as well as myocyte ultrastructure in the setting of ischaemic stress. Factors that have limited the clinical translation of protection will be considered specifically in terms of signalling and structural defects. The potential of caveolin to overcome barriers to protection with the ultimate hope of clinical translation will be discussed.
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Affiliation(s)
- Jan M Schilling
- VA San Diego Healthcare System, San Diego, CA, USA; Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
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