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Qian L, Xu H, Yuan R, Yun W, Ma Y. Formononetin ameliorates isoproterenol induced cardiac fibrosis through improving mitochondrial dysfunction. Biomed Pharmacother 2024; 170:116000. [PMID: 38070245 DOI: 10.1016/j.biopha.2023.116000] [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: 09/27/2023] [Revised: 11/23/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024] Open
Abstract
Formononetin, an isoflavone compound, has been extensively researched due to its various biological activities, including a potent protective effect on the cardiovascular system. However, the impact of formononetin on cardiac fibrosis has not been investigated. In this study, C57BL/6 mice were used to establish cardiac fibrosis animal models by subcutaneous injecting of isoproterenol (ISO) and formononetin was orally administrated. The results showed that formononetin reversed ISO-induced heart stiffness revealed by early-to-atrial wave ratio (E/A ratio). Masson staining, western blot, immunohistochemistry and real-time PCR exhibited that the cardiac fibrosis and fibrosis-related proteins (collage III, fibronectin, TGF-β1, α-SMA, and vimentin) and genes (Col1a1, Col3a1, Acta2 and Tgfb1) induced by ISO were significantly suppressed by formononetin. Furthermore, by combining metabolomics and network pharmacology, we found three important targets (ALDH2, HADH, and MAOB), which are associated with mitochondrial function, were involved in the beneficial effect of formononetin. Further validation revealed that these three genes were more abundance in cardiomyocyte than in cardiac fibroblast. The mRNA expression of ALDH2 and HADH were decreased, while MOAB was increased in cardiomyocyte upon ISO treatment and these phenomena were reversed by formononetin. In addition, we investigated mitochondrial membrane potential and ROS production in cardiomyocytes, the results showed that formononetin effectively improved mitochondrial dysfunction induced by ISO. In summary, we demonstrated that formononetin via regulating the expressions of ALDH2, HADH, and MAOB in cardiomyocyte to improve mitochondrial dysfunction and alleviate β-adrenergic activation cardiac fibrosis.
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Affiliation(s)
- Lei Qian
- Department of Biochemistry and Molecular Biology, College of Basic Sciences, Dalian Medical University, Dalian 116044, China; Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Hu Xu
- Wuhu Hospital and Health Science Center, East China Normal University, Shanghai 200241, China
| | - Ruqiang Yuan
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Weijing Yun
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Yufang Ma
- Department of Biochemistry and Molecular Biology, College of Basic Sciences, Dalian Medical University, Dalian 116044, China.
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Claridge B, Rai A, Lees JG, Fang H, Lim SY, Greening DW. Cardiomyocyte intercellular signalling increases oxidative stress and reprograms the global- and phospho-proteome of cardiac fibroblasts. JOURNAL OF EXTRACELLULAR BIOLOGY 2023; 2:e125. [PMID: 38938901 PMCID: PMC11080892 DOI: 10.1002/jex2.125] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/20/2023] [Accepted: 11/14/2023] [Indexed: 06/29/2024]
Abstract
Pathological reprogramming of cardiomyocyte and fibroblast proteome landscapes drive the initiation and progression of cardiac fibrosis. Although the secretome of dysfunctional cardiomyocytes is emerging as an important driver of pathological fibroblast reprogramming, our understanding of the downstream molecular players remains limited. Here, we show that cardiac fibroblast activation (αSMA+) and oxidative stress mediated by the secretome of TGFβ-stimulated cardiomyocytes is associated with a profound reprogramming of their proteome and phosphoproteome landscape. Within the fibroblast global proteome there was a striking dysregulation of proteins implicated in extracellular matrix, protein localisation/metabolism, KEAP1-NFE2L2 pathway, lysosomes, carbohydrate metabolism, and transcriptional regulation. Kinase substrate enrichment analysis of phosphopeptides revealed potential role of kinases (CK2, CDK2, PKC, GSK3B) during this remodelling. We verified upregulated activity of casein kinase 2 (CK2) in secretome-treated fibroblasts, and pharmacological CK2 inhibitor TBB (4,5,6,7-Tetrabromobenzotriazole) significantly abrogated fibroblast activation and oxidative stress. Our data provides molecular insights into cardiomyocyte to cardiac fibroblast crosstalk, and the potential role of CK2 in regulating cardiac fibroblast activation and oxidative stress.
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Affiliation(s)
- Bethany Claridge
- Baker Heart and Diabetes InstituteMelbourneVictoriaAustralia
- Baker Department of Cardiovascular Research Translation and ImplementationLa Trobe UniversityMelbourneVictoriaAustralia
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and EnvironmentLa Trobe UniversityMelbourneVictoriaAustralia
| | - Alin Rai
- Baker Heart and Diabetes InstituteMelbourneVictoriaAustralia
- Baker Department of Cardiovascular Research Translation and ImplementationLa Trobe UniversityMelbourneVictoriaAustralia
- Baker Department of Cardiometabolic HealthUniversity of MelbourneMelbourneVictoriaAustralia
- Central Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Jarmon G. Lees
- O'Brien Institute DepartmentSt Vincent's Institute of Medical ResearchFitzroyVictoriaAustralia
- Department of Surgery and MedicineUniversity of MelbourneMelbourneVictoriaAustralia
| | - Haoyun Fang
- Baker Heart and Diabetes InstituteMelbourneVictoriaAustralia
- Baker Department of Cardiometabolic HealthUniversity of MelbourneMelbourneVictoriaAustralia
| | - Shiang Y. Lim
- O'Brien Institute DepartmentSt Vincent's Institute of Medical ResearchFitzroyVictoriaAustralia
- Department of Surgery and MedicineUniversity of MelbourneMelbourneVictoriaAustralia
- National Heart Research Institute SingaporeNational Heart CentreSingaporeSingapore
- Drug Discovery Biology, Faculty of Pharmacy and Pharmaceutical SciencesMonash UniversityMelbourneVictoriaAustralia
| | - David W. Greening
- Baker Heart and Diabetes InstituteMelbourneVictoriaAustralia
- Baker Department of Cardiovascular Research Translation and ImplementationLa Trobe UniversityMelbourneVictoriaAustralia
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and EnvironmentLa Trobe UniversityMelbourneVictoriaAustralia
- Baker Department of Cardiometabolic HealthUniversity of MelbourneMelbourneVictoriaAustralia
- Central Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
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Li Y, Tian Y, Shi S, Hou X, Hao H, Ma M, Ning N, Yuan Y, Wang X, Liu H, Wang L. Epac1 participates in β 1-adrenoreceptor autoantibody-mediated decreased autophagic flux in cardiomyocytes. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119512. [PMID: 37315585 DOI: 10.1016/j.bbamcr.2023.119512] [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: 02/16/2023] [Revised: 04/29/2023] [Accepted: 06/03/2023] [Indexed: 06/16/2023]
Abstract
Decreased autophagic flux in cardiomyocytes is an important mechanism by which the β1-adrenoreceptor (β1-AR) autoantibody (β1-AA) induces heart failure. A previous study found that β1-AA imparts its biological effects via the β1-AR/Gs/AC/cAMP/PKA canonical signaling pathway, but PKA inhibition does not completely reverse β1-AA-induced reduction in autophagy in myocardial tissues, suggesting that other signaling molecules participate in this process. This study confirmed that Epac1 upregulation is indeed involved β1-AA-induced decreased cardiomyocyte autophagy through CE3F4 pretreatment, Epac1 siRNA transfection, western blot and immunofluorescence methods. On this basis, we constructed β1-AR and β2-AR knockout mice, and used receptor knockout mice, β1-AR selective blocker (atenolol), and the β2-AR/Gi-biased agonist ICI 118551 to show that β1-AA upregulated Epac1 expression through β1-AR and β2-AR to inhibit autophagy, and biased activation of β2-AR/Gi signaling downregulated myocardial Epac1 expression to reverse β1-AA-induced myocardial autophagy inhibition. This study aimed to test the hypothesis that Epac1 acts as another effector downstream of cAMP on β1-AA-induced reduction in cardiomyocyte autophagy, and β1-AA upregulates myocardial Epac1 expression through β1-AR and β2-AR, and biased activation of the β2-AR/Gi signaling pathway can reverse β1-AA-induced myocardial autophagy inhibition. This study provides new ideas and therapeutic targets for the prevention and treatment of cardiovascular diseases related to dysregulated autophagy.
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Affiliation(s)
- Yang Li
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Yuan Tian
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Shu Shi
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Xiaohong Hou
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Haihu Hao
- Department of Orthopedics, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, PR China
| | - Mingxia Ma
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Na Ning
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Yuan Yuan
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China
| | - Xiaohui Wang
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China; Key Laboratory of Cellular Physiology (Shanxi Medical University), Taiyuan, PR China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.
| | - Li Wang
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, PR China; Key Laboratory of Cellular Physiology (Shanxi Medical University), Taiyuan, PR China.
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Zhi X, Shi S, Li Y, Ma M, Long Y, Li C, Hao H, Liu H, Wang X, Wang L. S100a9 inhibits Atg9a transcription and participates in suppression of autophagy in cardiomyocytes induced by β 1-adrenoceptor autoantibodies. Cell Mol Biol Lett 2023; 28:74. [PMID: 37723445 PMCID: PMC10506287 DOI: 10.1186/s11658-023-00486-1] [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: 04/18/2023] [Accepted: 08/31/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND Cardiomyocyte death induced by autophagy inhibition is an important cause of cardiac dysfunction. In-depth exploration of its mechanism may help to improve cardiac dysfunction. In our previous study, we found that β1-adrenergic receptor autoantibodies (β1-AAs) induced a decrease in myocardial autophagy and caused cardiomyocyte death, thus resulting in cardiac dysfunction. Through tandem mass tag (TMT)-based quantitative proteomics, autophagy-related S100a9 protein was found to be significantly upregulated in the myocardial tissue of actively immunized mice. However, whether S100a9 affects the cardiac function in the presence of β1-AAs through autophagy and the specific mechanism are currently unclear. METHODS In this study, the active immunity method was used to establish a β1-AA-induced mouse cardiac dysfunction model, and RT-PCR and western blot were used to detect changes in gene and protein expression in cardiomyocytes. We used siRNA to knockdown S100a9 in cardiomyocytes. An autophagy PCR array was performed to screen differentially expressed autophagy-related genes in cells transfected with S100a9 siRNA and negative control siRNA. Cytoplasmic nuclear separation, co-immunoprecipitation (Co-IP), and immunofluorescence were used to detect the binding of S100a9 and hypoxia inducible factor-1α (HIF-1α). Finally, AAV9-S100a9-RNAi was injected into mice via the tail vein to knockdown S100a9 in cardiomyocytes. Cardiac function was detected via ultrasonography. RESULTS The results showed that β1-AAs induced S100a9 expression. The PCR array indicated that Atg9a changed significantly in S100a9siRNA cells and that β1-AAs increased the binding of S100a9 and HIF-1α in cytoplasm. Knockdown of S100a9 significantly improved autophagy levels and cardiac dysfunction. CONCLUSION Our research showed that β1-AAs increased S100a9 expression in cardiomyocytes and that S100a9 interacted with HIF-1α, which prevented HIF-1α from entering the nucleus normally, thus inhibiting the transcription of Atg9a. This resulted in autophagy inhibition and cardiac dysfunction.
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Affiliation(s)
- Xiaoyan Zhi
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Shu Shi
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Yang Li
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Mingxia Ma
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Yaolin Long
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Chen Li
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Haihu Hao
- Department of Orthopaedics, Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Xiaohui Wang
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Li Wang
- Department of Pathology, Shanxi Medical University, No.56 Xinjian South Road, Taiyuan, Shanxi, 030001, People's Republic of China.
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Sun H, Song J, Li K, Li Y, Shang L, Zhou Q, Lu Y, Zong Y, He X, Kari M, Yang H, Zhou X, Zhang L, Tang B. Increased β1-adrenergic receptor antibody confers a vulnerable substrate for atrial fibrillation via mediating Ca2+ mishandling and atrial fibrosis in active immunization rabbit models. Clin Sci (Lond) 2023; 137:195-217. [PMID: 36597894 PMCID: PMC9885845 DOI: 10.1042/cs20220654] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/19/2022] [Accepted: 01/03/2023] [Indexed: 01/05/2023]
Abstract
BACKGROUND Autoimmune disorder is the emerging mechanism of atrial fibrillation (AF). The β1-adrenergic receptor antibody (β1-AAb) is associated with AF progress. Our study aims to investigate whether β1-AAbs involves in atrial vulnerable substrate by mediating Ca2+ mishandling and atrial fibrosis in autoimmune associated AF. METHODS Active immunization models were established via subcutaneous injection of the second extracellular loop (ECL2) peptide for β1 adrenergic receptor (β1AR). Invasive electrophysiologic study and ex vivo optical mapping were used to evaluate the changed electrophysiology parameters and calcium handling properties. Phospho-proteomics combined with molecular biology assay were performed to identify the potential mechanisms of remodeled atrial substrate elicited by β1-AAbs. Exogenous β1-AAbs were used to induce the cellular phenotypes of HL-1 cells and atrial fibroblasts to AF propensity. RESULTS β1-AAbs aggravated the atrial electrical instability and atrial fibrosis. Bisoprolol alleviated the alterations of action potential duration (APD), Ca2+ transient duration (CaD), and conduction heterogeneity challenged by β1-AAbs. β1-AAbs prolonged calcium transient refractoriness and promoted arrhythmogenic atrial alternans and spatially discordant alternans, which were partly counteracted through blocking β1AR. Its underlying mechanisms are related to β1AR-drived CaMKII/RyR2 activation of atrial cardiomyocytes and the myofibroblasts phenotype formation of fibroblasts. CONCLUSION Suppressing β1-AAbs effectively protects the atrial vulnerable substrate by ameliorating intracellular Ca2+ mishandling and atrial fibrosis, preventing the process of the autoimmune associated AF.
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Affiliation(s)
- Huaxin Sun
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Jie Song
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Kai Li
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Yao Li
- Psychosomatic Medical Center, The Fourth People’s Hospital of Chengdu, Chengdu, China
| | - Luxiang Shang
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Jinan, China
| | - Qina Zhou
- School of Nursing, Midwifery and Social Work, University of Queensland, Brisbane, Queensland, Australia
| | - Yanmei Lu
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Yazhen Zong
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Xiuyuan He
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Muzappar Kari
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Hang Yang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Xianhui Zhou
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Correspondence: Baopeng Tang () or Ling Zhang () or Xianhui Zhou ()
| | - Ling Zhang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Correspondence: Baopeng Tang () or Ling Zhang () or Xianhui Zhou ()
| | - Baopeng Tang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
- Correspondence: Baopeng Tang () or Ling Zhang () or Xianhui Zhou ()
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Macrophage polarization is involved in liver fibrosis induced by β 1-adrenoceptor autoantibody. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1100-1112. [PMID: 35983976 PMCID: PMC9828683 DOI: 10.3724/abbs.2022102] [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] [Indexed: 11/25/2022] Open
Abstract
Accumulating evidence suggests that liver injury can be induced by the over-expression of β 1-adrenergic receptors (β 1-ARs). High titers of autoantibodies specific to β 1-adrenergic receptors (β 1-AA) are detected in the sera of heart failure patients, potentially playing agonist-like roles. However, the role of β 1-AA in liver function has not been characterized. In this study, we collect the sera of primary biliary cholangitis (PBC) patients, a condition which easily develops into liver fibrosis, and analyze the relationship between PBC and β 1-AA. A passive immunization model is established to assess the effect of β 1-AA on the liver. Subsequently, the effect of β 1-AA on macrophages is investigated in vitro. Results show that PBC patients have a high titer and ratio of β 1-AA, compared to controls. Liver injury and fibrosis are induced by β 1-AA. In vitro experiments with ROS probe demonstrate that β 1-AA induces macrophages to produce ROS and secrete TNFα. These effects can be partially reversed by metoprolol, a blocker for β 1-AR. Results from the transwell and phagocytosis assays show that β 1-AA promotes macrophage migration and phagocytosis. FCM tests suggest that β 1-AA induces the alteration of M1 rather than M2 markers in macrophages. Finally, the Annexin V/PI assay indicates that macrophage culture supernatants stimulated by β 1-AA cause hepatocyte apoptosis. Overall, these results suggest that β 1-AA is involved in PBC. The β 1-AA-induced activation, phagocytosis and phenotypic modification of macrophages may play an important role in the development of hepatic fibrosis and injury.
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cAMP Signalling Pathway in Biocontrol Fungi. Curr Issues Mol Biol 2022; 44:2622-2634. [PMID: 35735620 PMCID: PMC9221721 DOI: 10.3390/cimb44060179] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 01/07/2023] Open
Abstract
Biocontrol is a complex process, in which a variety of physiological and biochemical characteristics are altered. The cAMP signalling pathway is an important signal transduction pathway in biocontrol fungi and consists of several key components. The G-protein system contains G-protein coupled receptors (GPCRs), heterotrimeric G-proteins, adenylate cyclase (AC), cAMP-dependent protein kinase (PKA), and downstream transcription factors (TFs). The cAMP signalling pathway can regulate fungal growth, development, differentiation, sporulation, morphology, secondary metabolite production, environmental stress tolerance, and the biocontrol of pathogens. However, few reviews of the cAMP signalling pathway in comprehensive biocontrol processes have been reported. This work reviews and discusses the functions and applications of genes encoding each component in the cAMP signalling pathway from biocontrol fungi, including the G-protein system components, AC, PKA, and TFs, in biocontrol behaviour. Finally, future suggestions are provided for constructing a complete cAMP signalling pathway in biocontrol fungi containing all the components and downstream effectors involved in biocontrol behavior. This review provides useful information for the understanding the biocontrol mechanism of biocontrol fungi by utilising the cAMP signalling pathway.
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Sun Y, Feng L, Hu B, Dong J, Zhang L, Huang X, Yuan Y. Prognostic Value of β1 Adrenergic Receptor Autoantibody and Soluble Suppression of Tumorigenicity-2 in Patients With Acutely Decompensated Heart Failure. Front Cardiovasc Med 2022; 9:821553. [PMID: 35224052 PMCID: PMC8866312 DOI: 10.3389/fcvm.2022.821553] [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: 11/24/2021] [Accepted: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
Background Both β1 adrenergic receptor autoantibody (β1-AA) and soluble suppression of tumorigenicity-2 (sST2) take a role in the pathological remodeling of heart failure. However, limited studies investigated the correlation between the expression of β1-AA and sST2 in patients with acutely decompensated heart failure (ADHF). Objective To explore the correlation between β1-AA and sST2, and evaluate their prognostic value in patients with ADHF. Methods Patients who were admitted for ADHF were included. The N-terminal pro-brain natriuretic peptide (NT-proBNP), sST2, and β1-AA in blood samples were tested at hospital admission and then followed up for assessing the outcomes. Pearson correlation analysis was used to explore the correlation between β1-AA and sST2. The effects of β1-AA, sST2, or the combination of them on the all-cause mortality of patients with ADHF were assessed by Multivariate Cox regression analysis. Results There were 96 patients with ADHF and 96 control populations enrolled. The β1-AA was significantly higher in ADHF than in the control group (0.321 ± 0.06 vs. 0.229 ± 0.04, P = 0.000). Pearson correlation analysis showed that β1-AA was positively correlated with sST2 (r = 0.593), NT-proBNP (r = 0.557), Procalcitonin (r = 0.176), and left ventricular end-diastolic diameter (r = 0.315), but negatively correlated with triglycerides (r = −0.323), and left ventricular ejection fraction (r = −0.430) (all P < 0.05) in ADHF. Patients with ADHF, complicated with both high β1-AA and sST2, showed the highest all-cause mortality during an average of 25.5 months of follow-up. Multivariate Cox regression showed the combination of both high β1-AA and sST2 independently correlated with the all-cause mortality after adjustment for other risk factors (hazard ratio 3.348, 95% CI 1.440 to 7.784, P = 0.005). After adding with β1-AA and sST2, the area under the curves for the prognostic all-cause mortality could increase from 0.642 to 0.748 (P = 0.011). Conclusion The β1-AA is positively correlated with sST2 in patients with ADHF. Elevated plasma β1-AA and sST2 level in patients with ADHF are associated with poorer prognoses.
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Barallobre-Barreiro J, Radovits T, Fava M, Mayr U, Lin WY, Ermolaeva E, Martínez-López D, Lindberg EL, Duregotti E, Daróczi L, Hasman M, Schmidt LE, Singh B, Lu R, Baig F, Siedlar AM, Cuello F, Catibog N, Theofilatos K, Shah AM, Crespo-Leiro MG, Doménech N, Hübner N, Merkely B, Mayr M. Extracellular Matrix in Heart Failure: Role of ADAMTS5 in Proteoglycan Remodeling. Circulation 2021; 144:2021-2034. [PMID: 34806902 PMCID: PMC8687617 DOI: 10.1161/circulationaha.121.055732] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 10/20/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Remodeling of the extracellular matrix (ECM) is a hallmark of heart failure (HF). Our previous analysis of the secretome of murine cardiac fibroblasts returned ADAMTS5 (a disintegrin and metalloproteinase with thrombospondin motifs 5) as one of the most abundant proteases. ADAMTS5 cleaves chondroitin sulfate proteoglycans such as versican. The contribution of ADAMTS5 and its substrate versican to HF is unknown. METHODS Versican remodeling was assessed in mice lacking the catalytic domain of ADAMTS5 (Adamts5ΔCat). Proteomics was applied to study ECM remodeling in left ventricular samples from patients with HF, with a particular focus on the effects of common medications used for the treatment of HF. RESULTS Versican and versikine, an ADAMTS-specific versican cleavage product, accumulated in patients with ischemic HF. Versikine was also elevated in a porcine model of cardiac ischemia/reperfusion injury and in murine hearts after angiotensin II infusion. In Adamts5ΔCat mice, angiotensin II infusion resulted in an aggravated versican build-up and hyaluronic acid disarrangement, accompanied by reduced levels of integrin β1, filamin A, and connexin 43. Echocardiographic assessment of Adamts5ΔCat mice revealed a reduced ejection fraction and an impaired global longitudinal strain on angiotensin II infusion. Cardiac hypertrophy and collagen deposition were similar to littermate controls. In a proteomics analysis of a larger cohort of cardiac explants from patients with ischemic HF (n=65), the use of β-blockers was associated with a reduction in ECM deposition, with versican being among the most pronounced changes. Subsequent experiments in cardiac fibroblasts confirmed that β1-adrenergic receptor stimulation increased versican expression. Despite similar clinical characteristics, patients with HF treated with β-blockers had a distinct cardiac ECM profile. CONCLUSIONS Our results in animal models and patients suggest that ADAMTS proteases are critical for versican degradation in the heart and that versican accumulation is associated with impaired cardiac function. A comprehensive characterization of the cardiac ECM in patients with ischemic HF revealed that β-blockers may have a previously unrecognized beneficial effect on cardiac chondroitin sulfate proteoglycan content.
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Affiliation(s)
- Javier Barallobre-Barreiro
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Tamás Radovits
- Heart and Vascular Center, Department of Cardiology, Semmelweis University, Budapest, Hungary (T.R., L.D., B.M.)
| | - Marika Fava
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Ursula Mayr
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Wen-Yu Lin
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
- Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (W.-Y.L.)
| | - Elizaveta Ermolaeva
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Diego Martínez-López
- IIS-Fundación Jiménez Díaz–Universidad Autónoma and CIBERCV, Madrid, Spain (D.M.-L.)
| | - Eric L. Lindberg
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany (E.L.L., N.H.)
| | - Elisa Duregotti
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - László Daróczi
- Heart and Vascular Center, Department of Cardiology, Semmelweis University, Budapest, Hungary (T.R., L.D., B.M.)
| | - Maria Hasman
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Lukas E. Schmidt
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Bhawana Singh
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Ruifang Lu
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Ferheen Baig
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Aleksandra Malgorzata Siedlar
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Friederike Cuello
- Institute of Experimental Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, German Center for Heart Research (DZHK), Hamburg, Germany (F.C.)
| | - Norman Catibog
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Konstantinos Theofilatos
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Ajay M. Shah
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
| | - Maria G. Crespo-Leiro
- Instituto de Investigación Biomédica de A Coruña (INIBIC)–CIBERCV, Complexo Hospitalario Universitario de A Coruña (CHUAC), Universidade da Coruña, Spain (M.G.C.-L., N.D.)
| | - Nieves Doménech
- Instituto de Investigación Biomédica de A Coruña (INIBIC)–CIBERCV, Complexo Hospitalario Universitario de A Coruña (CHUAC), Universidade da Coruña, Spain (M.G.C.-L., N.D.)
| | - Norbert Hübner
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany (E.L.L., N.H.)
- Charité-Universitätsmedizin, Berlin, Germany (N.H.)
- DZHK (German Center for Cardiovascular Research), Partner Site Berlin, Berlin, Germany (N.H.)
| | - Béla Merkely
- Heart and Vascular Center, Department of Cardiology, Semmelweis University, Budapest, Hungary (T.R., L.D., B.M.)
| | - Manuel Mayr
- King’s BHF Centre of Research Excellence, London, UK (J.B.-B., M.F., U.M., W.-Y.L., E.E., E.D., M.H., L.E.S., B.S., R.L., F.B., A.M.S., N.C., K.T., A.M.S., M.M.)
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10
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Adekunle AO, Adzika GK, Mprah R, Ndzie Noah ML, Adu-Amankwaah J, Rizvi R, Akhter N, Sun H. Predominance of Heart Failure With Preserved Ejection Fraction in Postmenopausal Women: Intra- and Extra-Cardiomyocyte Maladaptive Alterations Scaffolded by Estrogen Deficiency. Front Cell Dev Biol 2021; 9:685996. [PMID: 34660569 PMCID: PMC8511782 DOI: 10.3389/fcell.2021.685996] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 09/09/2021] [Indexed: 12/11/2022] Open
Abstract
Heart failure (HF) remains a public health concern as it is associated with high morbidity and death rates. In particular, heart failure with preserved ejection fraction (HFpEF) represents the dominant (>50%) form of HF and mostly occurring among postmenopausal women. Hence, the initiation and progression of the left ventricular diastolic dysfunctions (LVDD) (a typically clinical manifestation of HFpEF) in postmenopausal women have been attributed to estrogen deficiency and the loss of its residue cardioprotective effects. In this review, from a pathophysiological and immunological standpoint, we discuss the probable multiple pathomechanisms resulting in HFpEF, which are facilitated by estrogen deficiency. The initial discussions recap estrogen and estrogen receptors (ERs) and β-adrenergic receptors (βARs) signaling under physiological/pathological states to facilitate cardiac function/dysfunction, respectively. By reconciling these prior discussions, attempts were made to explain how the loss of estrogen facilitates the disruptions both ERs and βARs-mediated signaling responsible for; the modulation of intra-cardiomyocyte calcium homeostasis, maintenance of cardiomyocyte cytoskeletal and extracellular matrix, the adaptive regulation of coronary microvascular endothelial functions and myocardial inflammatory responses. By scaffolding the disruption of these crucial intra- and extra-cardiomyocyte physiological functions, estrogen deficiency has been demonstrated to cause LVDD and increase the incidence of HFpEF in postmenopausal women. Finally, updates on the advancements in treatment interventions for the prevention of HFpEF were highlighted.
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Affiliation(s)
| | | | - Richard Mprah
- Department of Physiology, Xuzhou Medical University, Xuzhou, China
| | | | | | | | - Nazma Akhter
- Department of Physiology, Xuzhou Medical University, Xuzhou, China
| | - Hong Sun
- Department of Physiology, Xuzhou Medical University, Xuzhou, China.,Xuzhou Medical University, Xuzhou, China
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11
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Du X. Sympatho-adrenergic mechanisms in heart failure: new insights into pathophysiology. MEDICAL REVIEW (BERLIN, GERMANY) 2021; 1:47-77. [PMID: 37724075 PMCID: PMC10388789 DOI: 10.1515/mr-2021-0007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/02/2021] [Indexed: 09/20/2023]
Abstract
The sympathetic nervous system is activated in the setting of heart failure (HF) to compensate for hemodynamic instability. However, acute sympathetic surge or sustained high neuronal firing rates activates β-adrenergic receptor (βAR) signaling contributing to myocardial remodeling, dysfunction and electrical instability. Thus, sympatho-βAR activation is regarded as a hallmark of HF and forms pathophysiological basis for β-blocking therapy. Building upon earlier research findings, studies conducted in the recent decades have significantly advanced our understanding on the sympatho-adrenergic mechanism in HF, which forms the focus of this article. This review notes recent research progress regarding the roles of cardiac β2AR or α1AR in the failing heart, significance of β1AR-autoantibodies, and βAR signaling through G-protein independent signaling pathways. Sympatho-βAR regulation of immune cells or fibroblasts is specifically discussed. On the neuronal aspects, knowledge is assembled on the remodeling of sympathetic nerves of the failing heart, regulation by presynaptic α2AR of NE release, and findings on device-based neuromodulation of the sympathetic nervous system. The review ends with highlighting areas where significant knowledge gaps exist but hold promise for new breakthroughs.
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Affiliation(s)
- Xiaojun Du
- Faculty of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi’an Jiaotong University Health Science Center, 76 West Yanta Road, Xi’an710061, Shaanxi, China
- Baker Heart and Diabetes Institute, 75 Commercial Road, Melbourne, VIC3004, Australia
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12
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Sun C, Lu J, Long Y, Guo S, Jia W, Ning N, Hao H, Wang X, Bian Y, Liu H, Wang L. Adiponectin up-regulates the decrease of myocardial autophagic flux induced by β 1 -adrenergic receptor autoantibody partly dependent on AMPK. J Cell Mol Med 2021; 25:8464-8478. [PMID: 34322993 PMCID: PMC8419161 DOI: 10.1111/jcmm.16807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/28/2021] [Accepted: 07/05/2021] [Indexed: 12/20/2022] Open
Abstract
Cardiomyocytes autophagy is essential for maintaining cardiac function. Our previous studies have found that β1‐adrenergic receptor autoantibody (β1‐AA) induced the decreased myocardial autophagic flux, which resulted in cardiomyocyte death and cardiac dysfunction. And other studies demonstrated that β1‐AA induced the decrease of AMPK phosphorylation, the key hub of autophagy pathway, while adiponectin up‐regulated autophagic flux mediated by AMPK. However, it is not clear whether adiponectin improves the inhibition of myocardial autophagic flux induced by β1‐AA by up‐regulating the level of AMPK phosphorylation. In this study, it has been confirmed that β1‐AA induced the decrease of AMPK phosphorylation level in both vivo and vitro. Moreover, pretreatment of cardiomyocytes with AMPK inhibitor Compound C could further reduce the autophagic flux induced by β1‐AA. Adiponectin deficiency could aggravate the decrease of myocardial AMPK phosphorylation level, autophagic flux and cardiac function induced by β1‐AA. Further, exogenous adiponectin could reverse the decline of AMPK phosphorylation level and autophagic flux induced by β1‐AA and even reduce cardiomyocyte death. While pretreated with the Compound C, the adiponectin treatment did not improve the decreased autophagosome formation, but still improved the decreased autophagosome clearance induced by β1‐AA in cardiomyocytes. This study is the first time to confirm that β1‐AA could inhibit myocardial autophagic flux by down‐regulating AMPK phosphorylation level. Adiponectin could improve the inhibition of myocardial autophagic flux induced by β1‐AA partly dependent on AMPK, so as to provide an experimental basis for the treatment of patients with β1‐AA‐positive cardiac dysfunction.
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Affiliation(s)
- Cong Sun
- Department of Pathology, Shanxi Medical University, Taiyuan, China.,Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China.,Department of Pathology, Linfen Central Hospital, Linfen, China
| | - Jiebei Lu
- Department of Pathology, Shanxi Medical University, Taiyuan, China
| | - Yaolin Long
- Department of Pathology, Shanxi Medical University, Taiyuan, China
| | - Shuai Guo
- Department of Pathology, Shanxi Medical University, Taiyuan, China
| | - Weiwei Jia
- Department of Pathology, Shanxi Medical University, Taiyuan, China
| | - Na Ning
- Department of Pathology, Shanxi Medical University, Taiyuan, China
| | - Haihu Hao
- Department of Orthopedics, Shanxi Bethune Hospital & Shanxi Academy of Medical Sciences, Taiyuan, China
| | - Xiaohui Wang
- Department of Pathology, Shanxi Medical University, Taiyuan, China.,Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China
| | - Yunfei Bian
- Department of Cardiology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Li Wang
- Department of Pathology, Shanxi Medical University, Taiyuan, China.,Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China
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13
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Wang QG, Cheng BCY, He YZ, Li LJ, Ling Y, Luo G, Wang L, Liang S, Zhang Y. miR-320a in serum exosomes promotes myocardial fibroblast proliferation via regulating the PIK3CA/Akt/mTOR signaling pathway in HEH2 cells. Exp Ther Med 2021; 22:873. [PMID: 34194551 PMCID: PMC8237386 DOI: 10.3892/etm.2021.10305] [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: 05/01/2020] [Accepted: 03/25/2021] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRNAs/miRs) serve an important role in the pathogenesis of chronic heart failure (CHF). A number of reports have illustrated the regulatory effect of serum exosomal miRNA on myocardial fibrosis. The present study aimed to investigate the expression of miR-320a in serum exosomes, as well as the effect of miR-320a on myocardial fibroblast proliferation. Serum exosome samples from 10 patients with CHF and 5 healthy volunteers were obtained and characterized. mRNA and protein expression levels were measured via reverse transcription-quantitative PCR and western blotting, respectively. The content of soluble growth stimulation expressed gene 2 (sST2) was determined via ELISA. HEH2 cell viability and apoptosis were detected by performing MTT assays and flow cytometry, respectively. The results demonstrated that serum miR-320a expression levels and sST2 content were significantly increased in patients with CHF compared with healthy controls, and the expression of serum miR-320a was significantly correlated with clinical CHF indexes. miR-320a expression levels were significantly increased in exosomes isolated from patients with CHF compared with those isolated from healthy controls. Phosphoinositide-3-kinase catalytic α polypeptide gene (PIK3CA) expression levels and sST2 content were increased in HEH2 cells following transfection with miR-320a mimics compared with NC-mimic, whereas miR-320a inhibitor displayed contrasting effects by reduced the cell viability and apoptosis in myocardial fibroblasts compared with the NC-inhibitor group. The protein expression levels of collagen I, collagen III, α-smooth muscle actin, phosphorylated (p)-mTOR (ser 2448)/mTOR, p-Akt (ser 473)/Akt, p-Akt (thr 308)/Akt and PIK3CA were significantly increased in miR-320a mimic-transfected HEH2 cells compared with the NC-mimics groups. By contrast, miR-320a inhibitor notably downregulated the expression levels of these proteins compared with the NC-inhibitor group. Collectively, the results of the present study demonstrated that miR-320a promoted myocardial fibroblast proliferation via regulating the PIK3CA/Akt/mTOR signaling pathway in HEH2 cells, suggesting that serum exosomal miR-320a may serve as a potential biomarker for the diagnosis of CHF.
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Affiliation(s)
- Qing-Gao Wang
- Department of Cardiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi Zhuang Autonomous Region 530023, P.R. China
| | - Brian Chi-Yan Cheng
- College of Professional and Continuing Education, The Hong Kong Polytechnic University, Hong Kong 999077, SAR, P.R. China
| | - Ya-Zhou He
- Department of Cardiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi Zhuang Autonomous Region 530023, P.R. China
| | - Li-Juan Li
- Department of Cardiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi Zhuang Autonomous Region 530023, P.R. China
| | - Yun Ling
- School of Nursing, Guangxi University of Chinese Medicine, Nanning, Guangxi Zhuang Autonomous Region 530200, P.R. China
| | - Gan Luo
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, P.R. China
| | - Li Wang
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, P.R. China
| | - Shan Liang
- Department of Cardiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi Zhuang Autonomous Region 530023, P.R. China
| | - Yi Zhang
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, P.R. China
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14
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Zhao Y, Bai Y, Li Y, Dong Y, Guo Y, Wang W, Liu H. Disturbance of myocardial metabolism participates in autoantibodies against β 1 -adrenoceptor-induced cardiac dysfunction. Clin Exp Pharmacol Physiol 2021; 48:846-854. [PMID: 33565091 DOI: 10.1111/1440-1681.13485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 10/08/2020] [Accepted: 02/07/2021] [Indexed: 01/10/2023]
Abstract
Cardiac dysfunction is involved in disorders of energy metabolism. High-titre autoantibodies against the β1 -adrenoceptor (β1 -AAs) have been reported to exist in patients with cardiac dysfunction; however, the mechanism by which β1 -AAs affect cardiac function is unknown. This study aimed to determine whether β1 -AAs disturb myocardium energy metabolism and cause cardiac dysfunction. β1 -AA monoclonal antibodies (β1 -AAmAbs) were successfully pre-synthesized by hybridoma clones and used in all experiments. β1 -AAmAbs impaired cardiac function and induced a myocardial metabolic disturbance, as evidenced by decreased left ventricular ejection fraction and fractional shortening. In addition, β1 -AAmAbs decreased the adenosine triphosphate level and increased cardiac energy consumption (rate-pressure product). We further showed that the effects of β1 -AAmAbs on heart tissue might involve the mitochondria and metabolic pathways via the β1 -adrenoceptor based on an immunoprecipitation and mass spectrometry. Additionally, we found that β1 -AAmAbs impaired myocardial mitochondrial structure, decreased the membrane potential, and induced insufficient mitophagy. In conclusion, β1 -AAmAb-induced cardiac dysfunction is partly due to a disturbance in myocardial energy metabolism.
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Affiliation(s)
- Yuhui Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yan Bai
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yang Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yu Dong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yuhao Guo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Wen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
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15
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Aquino FLTD, Silva JPD, Ferro JNDS, Lagente V, Barreto E. trans-Cinnamic acid, but not p-coumaric acid or methyl cinnamate, induces fibroblast migration through PKA- and p38-MAPK signalling pathways. J Tissue Viability 2021; 30:363-371. [PMID: 34052086 DOI: 10.1016/j.jtv.2021.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 04/17/2021] [Accepted: 05/12/2021] [Indexed: 12/18/2022]
Abstract
AIM Hydroxycinnamic acids their derivatives have various pharmacological properties. The hydroxycinnamic acid derivatives, methyl cinnamate, trans-cinnamic, and p-coumaric acids have been the object of study in the treatment of skin wounds. However, it is unclear whether these derivatives exert a direct beneficial effect on fibroblast function. In this study, we evaluated the effects of methyl cinnamate, trans-cinnamic, and p-coumaric acids on fibroblast migration in vitro. MATERIALS AND METHODS NIH 3T3 and L929 fibroblast cell lines were exposed to each drug at several concentrations and the effect on cell viability, cell cycle, and extracellular matrix production were assessed by MTT assay, flow cytometry, and immunofluorescence staining, respectively. The effect on cell migration was examined using scratch assay. RESULTS The results showed that hydroxycinnamic acid derivatives not affect cell viability, but increase fibroblast migration in the in vitro scratch-wound healing assay. They also induced an increase in S and G2/M phases accompanied by a decrease in the G0/G1 phase of the cell cycle. The cell proliferation inhibitor mitomycin C abolished the effect induced by p-coumaric acid and methyl cinnamate, indicating that only the trans-cinnamic acid stimulated migration. A transwell migration assay confirmed that trans-cinnamic acid-treated fibroblasts exhibited increased migration compared with untreated cells. trans-Cinnamic acid-induced fibroblast migration was decreased by PKA inhibitor and p38-MAPK inhibitor but not by JNK inhibitor. Additionally, trans-cinnamic acid-treated fibroblasts showed an increase in the production of laminin and collagen type I. CONCLUSION Our study showed that trans-cinnamic acid improves fibroblast migration and modulates extracellular matrix synthesis, indicating its potential for accelerating the healing process.
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Affiliation(s)
| | | | | | - Vincent Lagente
- NuMeCan Institute (Nutrition, Metabolism and Cancer), Université de Rennes, INSERM, INRA, F-35000, Rennes, France
| | - Emiliano Barreto
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900, Maceió, Brazil.
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16
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Peter AK, Walker CJ, Ceccato T, Trexler CL, Ozeroff CD, Lugo KR, Perry AR, Anseth KS, Leinwand LA. Cardiac Fibroblasts Mediate a Sexually Dimorphic Fibrotic Response to β-Adrenergic Stimulation. J Am Heart Assoc 2021; 10:e018876. [PMID: 33998248 PMCID: PMC8483546 DOI: 10.1161/jaha.120.018876] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Biological sex is an important modifier of cardiovascular disease and women generally have better outcomes compared with men. However, the contribution of cardiac fibroblasts (CFs) to this sexual dimorphism is relatively unexplored. Methods and Results Isoproterenol (ISO) was administered to rats as a model for chronic β‐adrenergic receptor (β‐AR)‐mediated cardiovascular disease. ISO‐treated males had higher mortality than females and also developed fibrosis whereas females did not. Gonadectomy did not abrogate this sex difference. To determine the cellular contribution to this phenotype, CFs were studied. CFs from both sexes had increased proliferation in vivo in response to ISO, but CFs from female hearts proliferated more than male cells. In addition, male CFs were significantly more activated to myofibroblasts by ISO. To investigate potential regulatory mechanisms for the sexually dimorphic fibrotic response, β‐AR mRNA and PKA (protein kinase A) activity were measured. In response to ISO treatment, male CFs increased expression of β1‐ and β2‐ARs, whereas expression of both receptors decreased in female CFs. Moreover, ISO‐treated male CFs had higher PKA activity relative to vehicle controls, whereas ISO did not activate PKA in female CFs. Conclusions Chronic in vivo β‐AR stimulation causes fibrosis in male but not female rat hearts. Male CFs are more activated than female CFs, consistent with elevated fibrosis in male rat hearts and may be caused by higher β‐AR expression and PKA activation in male CFs. Taken together, our data suggest that CFs play a substantial role in mediating sex differences observed after cardiac injury.
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Affiliation(s)
- Angela K Peter
- BioFrontiers Institute University of Colorado Boulder CO.,Department of Molecular, Cellular and Developmental Biology University of Colorado Boulder CO
| | - Cierra J Walker
- BioFrontiers Institute University of Colorado Boulder CO.,Materials Science and Engineering Program University of Colorado Boulder Boulder CO
| | - Tova Ceccato
- BioFrontiers Institute University of Colorado Boulder CO.,Department of Molecular, Cellular and Developmental Biology University of Colorado Boulder CO
| | - Christa L Trexler
- BioFrontiers Institute University of Colorado Boulder CO.,Department of Molecular, Cellular and Developmental Biology University of Colorado Boulder CO
| | - Christopher D Ozeroff
- BioFrontiers Institute University of Colorado Boulder CO.,Department of Molecular, Cellular and Developmental Biology University of Colorado Boulder CO
| | | | - Amy R Perry
- BioFrontiers Institute University of Colorado Boulder CO
| | - Kristi S Anseth
- BioFrontiers Institute University of Colorado Boulder CO.,Department of Chemical and Biological Engineering University of Colorado Boulder CO
| | - Leslie A Leinwand
- BioFrontiers Institute University of Colorado Boulder CO.,Department of Molecular, Cellular and Developmental Biology University of Colorado Boulder CO
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17
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Yun W, Qian L, Yuan R, Xu H. Periplocymarin protects against myocardial fibrosis induced by β-adrenergic activation in mice. Biomed Pharmacother 2021; 139:111562. [PMID: 33839492 DOI: 10.1016/j.biopha.2021.111562] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 03/24/2021] [Accepted: 03/31/2021] [Indexed: 11/24/2022] Open
Abstract
Periplocymarin is an effective component of Periplocae Cortex, which was wildly used as an ingredient in Traditional Chinese Medicine. Our group previously reported that periplocymarin exerted cardiotonic role via promoting calcium influx. However, its exact role in the pathogenesis of myocardial fibrosis has not been elucidated yet. The present study was aimed at determining the potential effect and underlying mechanism of periplocymarin in isoproterenol (ISO)-induced myocardial fibrosis. C57BL/6 mice were subcutaneously injected with ISO (5 mg/kg/day) or saline for 1 week. The early-to-atrial wave ratio (E/A ratio) measured by echocardiography revealed that ISO-induced heart stiffness was remarkably reversed by administration of periplocymarin (5 mg/kg/day). Masson trichrome staining exhibited that treatment of periplocymarin reduced the excessive deposition of extracellular matrix (ECM). Further investigations employing real-time PCR and western blot demonstrated that periplocymarin suppressed the expression of fibrosis related genes (Col1a1, Col3a1, Acta2 and Tgfb1) and proteins (Collagen I, Collagen III, α-SMA and TGF-β1) induced by ISO. Metabolomics analysis demonstrated that periplocymarin ameliorated the disorders triggered by ISO and many of the differential metabolic substances were involved in amino acid, glucose and lipid metabolism. Further analysis using network pharmacology revealed that three key genes, namely NOS2, NOS3 and Ptgs2, may be the potential targets of periplocymarin and responsible for the disorders. Validation using heart tissues showed that the mRNA expression of NOS3 was decreased while Ptgs2 was increased upon ISO treatment, which were reversed by periplocymarin. Moreover, the expression of COX-2 (Ptgs2 encoded protein) was consistent with the aspect of Ptgs2 mRNA, while eNOS (NOS3 encoded protein) expression was unchanged. In vitro studies exhibited that periplocymarin exerts anti-fibrotic function via regulating at least eNOS and COX-2 in cardiomyocyte. Taken together, periplocymarin protects against myocardial fibrosis induced by β-adrenergic activation, the potential mechanism was that periplocymarin targeted on, at least eNOS and COX-2, to improve the metabolic processes of cardiomyocyte and thus attenuated the myocardial fibrosis. Our study highlighted that periplocymarin is a potential therapeutic agent for the prevention of myocardial fibrosis.
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Affiliation(s)
- Weijing Yun
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Lei Qian
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Ruqiang Yuan
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China.
| | - Hu Xu
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China.
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Tanner MA, Thomas TP, Maitz CA, Grisanti LA. β2-Adrenergic Receptors Increase Cardiac Fibroblast Proliferation Through the Gαs/ERK1/2-Dependent Secretion of Interleukin-6. Int J Mol Sci 2020; 21:ijms21228507. [PMID: 33198112 PMCID: PMC7697911 DOI: 10.3390/ijms21228507] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 12/18/2022] Open
Abstract
Fibroblasts are an important resident cell population in the heart involved in maintaining homeostasis and structure during normal conditions. They are also crucial in disease states for sensing signals and initiating the appropriate repair responses to maintain the structural integrity of the heart. This sentinel role of cardiac fibroblasts occurs, in part, through their ability to secrete cytokines. β-adrenergic receptors (βAR) are also critical regulators of cardiac function in the normal and diseased state and a major therapeutic target clinically. βAR are known to influence cytokine secretion in various cell types and they have been shown to be involved in cytokine production in the heart, but their role in regulating cytokine production in cardiac fibroblasts is not well understood. Thus, we hypothesized that βAR activation on cardiac fibroblasts modulates cytokine production to influence fibroblast function. Using primary fibroblast cultures from neonatal rats and adult mice, increased interleukin (IL)-6 expression and secretion occurred following β2AR activation. The use of pharmacological inhibitors and genetic manipulations showed that IL-6 elevations occurred through the Gαs-mediated activation of ERK1/2 and resulted in increased fibroblast proliferation. In vivo, a lack of β2AR resulted in increased infarct size following myocardial infarction and impaired wound closure in a murine dermal wound healing assay. These findings identify an important role for β2AR in regulating fibroblast proliferation through Gαs/ERK1/2-dependent alterations in IL-6 and may lead to the development of improved heart failure therapies through targeting fibrotic function of β2AR.
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Affiliation(s)
- Miles A. Tanner
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
| | - Toby P. Thomas
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
| | - Charles A. Maitz
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA;
| | - Laurel A. Grisanti
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
- Correspondence: ; Tel.: +573-884-8852
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Carmo J, Cavalcante-Araújo P, Silva J, Ferro J, Correia AC, Lagente V, Barreto E. Uvaol Improves the Functioning of Fibroblasts and Endothelial Cells and Accelerates the Healing of Cutaneous Wounds in Mice. Molecules 2020; 25:molecules25214982. [PMID: 33126422 PMCID: PMC7662923 DOI: 10.3390/molecules25214982] [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: 10/11/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/16/2022] Open
Abstract
Uvaol is a natural pentacyclic triterpene that is widely found in olives and virgin olive oil, exerting various pharmacological properties. However, information remains limited about how it affects fibroblasts and endothelial cells in events associated with wound healing. Here, we report the effect of uvaol in the in vitro and in vivo healing process. We show the positive effects of uvaol on migration of fibroblasts and endothelial cells in the scratch assay. Protein synthesis of fibronectin and laminin (but not collagen type I) was improved in uvaol-treated fibroblasts. In comparison, tube formation by endothelial cells was enhanced after uvaol treatment. Mechanistically, the effects of uvaol on cell migration involved the PKA and p38-MAPK signaling pathway in endothelial cells but not in fibroblasts. Thus, the uvaol-induced migratory response was dependent on the PKA pathway. Finally, topical treatment with uvaol caused wounds to close faster than in the control treatment using experimental cutaneous wounds model in mice. In conclusion, uvaol positively affects the behavior of fibroblasts and endothelial cells, potentially promoting cutaneous healing.
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Affiliation(s)
- Julianderson Carmo
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Polliane Cavalcante-Araújo
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Juliane Silva
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Jamylle Ferro
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Ana Carolina Correia
- Garanhuns College of Science, Education and Technology, University of Pernambuco, 55294-902 Garanhuns, Brazil;
| | - Vincent Lagente
- NuMeCan Institute (Nutrition, Metabolism and Cancer), Université de Rennes, INSERM, INRA, F-35000 Rennes, France;
| | - Emiliano Barreto
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
- Correspondence: ; Tel.: +55-82-3214-1704
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20
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Wölfel A, Sättele M, Zechmeister C, Nikolaev VO, Lohse MJ, Boege F, Jahns R, Boivin-Jahns V. Unmasking features of the auto-epitope essential for β 1 -adrenoceptor activation by autoantibodies in chronic heart failure. ESC Heart Fail 2020; 7:1830-1841. [PMID: 32436653 PMCID: PMC7373925 DOI: 10.1002/ehf2.12747] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 03/31/2020] [Accepted: 04/21/2020] [Indexed: 12/15/2022] Open
Abstract
Aims Chronic heart failure (CHF) can be caused by autoantibodies stimulating the heart via binding to first and/or second extracellular loops of cardiac β1‐adrenoceptors. Allosteric receptor activation depends on conformational features of the autoantibody binding site. Elucidating these features will pave the way for the development of specific diagnostics and therapeutics. Our aim was (i) to fine‐map the conformational epitope within the second extracellular loop of the human β1‐adrenoceptor (β1ECII) that is targeted by stimulating β1‐receptor (auto)antibodies and (ii) to generate competitive cyclopeptide inhibitors of allosteric receptor activation, which faithfully conserve the conformational auto‐epitope. Methods and results Non‐conserved amino acids within the β1ECII loop (compared with the amino acids constituting the ECII loop of the β2‐adrenoceptor) were one by one replaced with alanine; potential intra‐loop disulfide bridges were probed by cysteine–serine exchanges. Effects on antibody binding and allosteric receptor activation were assessed (i) by (auto)antibody neutralization using cyclopeptides mimicking β1ECII ± the above replacements, and (ii) by (auto)antibody stimulation of human β1‐adrenoceptors bearing corresponding point mutations. With the use of stimulating β1‐receptor (auto)antibodies raised in mice, rats, or rabbits and isolated from exemplary dilated cardiomyopathy patients, our series of experiments unmasked two features of the β1ECII loop essential for (auto)antibody binding and allosteric receptor activation: (i) the NDPK211–214 motif and (ii) the intra‐loop disulfide bond C209↔C215. Of note, aberrant intra‐loop disulfide bond C209↔C216 almost fully disrupted the functional auto‐epitope in cyclopeptides. Conclusions The conformational auto‐epitope targeted by cardio‐pathogenic β1‐receptor autoantibodies is faithfully conserved in cyclopeptide homologues of the β1ECII loop bearing the NDPK211–214 motif and the C209↔C215 bridge while lacking cysteine C216. Such molecules provide promising tools for novel diagnostic and therapeutic approaches in β1‐autoantibody‐positive CHF.
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Affiliation(s)
- Angela Wölfel
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany.,Rudolf-Virchow-Centre, Josef-Schneider-Str. 2, 97080, Würzburg, Germany.,Rudolf-Virchow-Centre, Pierre Fabre Dermo-Kosmetik GmbH, Jechtinger Straße 13, 79111, Freiburg, Germany
| | - Mathias Sättele
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany
| | - Christina Zechmeister
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany.,Interdisciplinary Bank of Biomaterials and Data (ibdw), University Hospital of Würzburg, Straubmühlweg 2A, D-97078, Würzburg, Germany.,Comprehensive Heart Failure Centre (CFHC), Am Schwarzenberg 11, 978078, Würzburg, Germany
| | - Viacheslav O Nikolaev
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany.,Institute for Molecular Cardiology, Department of Cardiology and Pneumology, University Hospital Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Martin J Lohse
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany.,Rudolf-Virchow-Centre, Josef-Schneider-Str. 2, 97080, Würzburg, Germany.,Institute Max Delbrück Center for Molecular Research, Berlin-Buch, Robert-Koch-Str. 40, 1000, Berlin, Germany
| | - Fritz Boege
- Rudolf-Virchow-Centre, Institute of Clinical Chemistry and Laboratory Diagnostics, University Hospital, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - Roland Jahns
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany.,Interdisciplinary Bank of Biomaterials and Data (ibdw), University Hospital of Würzburg, Straubmühlweg 2A, D-97078, Würzburg, Germany.,Comprehensive Heart Failure Centre (CFHC), Am Schwarzenberg 11, 978078, Würzburg, Germany
| | - Valérie Boivin-Jahns
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, D-97078, Wuerzburg, Germany.,Comprehensive Heart Failure Centre (CFHC), Am Schwarzenberg 11, 978078, Würzburg, Germany
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21
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Titus AS, V H, Kailasam S. Coordinated regulation of cell survival and cell cycle pathways by DDR2-dependent SRF transcription factor in cardiac fibroblasts. Am J Physiol Heart Circ Physiol 2020; 318:H1538-H1558. [PMID: 32412792 DOI: 10.1152/ajpheart.00740.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Relative resistance to apoptosis and the ability to proliferate and produce a collagen-rich scar determine the critical role of cardiac fibroblasts in wound healing and tissue remodeling following myocardial injury. Identification of cardiac fibroblast-specific factors and mechanisms underlying these aspects of cardiac fibroblast function is therefore of considerable scientific and clinical interest. In the present study, gene knockdown and overexpression approaches and promoter binding assays showed that discoidin domain receptor 2 (DDR2), a mesenchymal cell-specific collagen receptor tyrosine kinase localized predominantly in fibroblasts in the heart, acts via ERK1/2 MAPK-activated serum response factor (SRF) transcription factor to enhance the expression of antiapoptotic cIAP2 in cardiac fibroblasts, conferring resistance against oxidative injury. Furthermore, DDR2 was found to act via ERK1/2 MAPK-activated SRF to transcriptionally upregulate Skp2 that in turn facilitated post-translational degradation of p27, the cyclin-dependent kinase inhibitor that causes cell cycle arrest, to promote G1-S transition, as evidenced by Rb phosphorylation, increased proliferating cell nuclear antigen (PCNA) levels, and flow cytometry. DDR2-dependent ERK1/2 MAPK activation also suppressed forkhead box O 3a (FoxO3a)-mediated transcriptional induction of p27. Inhibition of the binding of collagen type I to DDR2 using WRG-28 indicated the obligate role of collagen type I in the activation of DDR2 and its regulatory role in cell survival and cell cycle protein expression. Notably, DDR2 levels positively correlated with SRF, cIAP2, and PCNA levels in cardiac fibroblasts from spontaneously hypertensive rats. To conclude, DDR2-mediated ERK1/2 MAPK activation facilitates coordinated regulation of cell survival and cell cycle progression in cardiac fibroblasts via SRF.NEW & NOTEWORTHY Relative resistance to apoptosis and the ability to proliferate and produce a collagen-rich scar enable cardiac fibroblasts to play a central role in myocardial response to injury. This study reports novel findings that mitogen-stimulated cardiac fibroblasts exploit a common regulatory mechanism involving collagen receptor (DDR2)-dependent activation of ERK1/2 MAPK and serum response factor to achieve coordinated regulation of apoptosis resistance and cell cycle progression, which could facilitate their survival and function in the injured myocardium.
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Affiliation(s)
- Allen Sam Titus
- Division of Cellular and Molecular Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | - Harikrishnan V
- Division of Cellular and Molecular Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | - Shivakumar Kailasam
- Division of Cellular and Molecular Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
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22
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Du Y, Zhang S, Yu H, Wu Y, Cao N, Wang W, Xu W, Li Y, Liu H. Autoantibodies Against β 1-Adrenoceptor Exaggerated Ventricular Remodeling by Inhibiting CTRP9 Expression. J Am Heart Assoc 2020; 8:e010475. [PMID: 30764693 PMCID: PMC6405676 DOI: 10.1161/jaha.118.010475] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Autoantibodies against the second extracellular loop of the β1‐adrenoceptor (β1‐AA) act similarly to agonist of β1‐adrenergic receptor, which plays an important role in the pathophysiological characteristics of ventricular remodeling. Recently, considerable lines of evidence have suggested that CTRP9 (C1q tumor necrosis factor–related protein 9) is a potent cardioprotective cardiokine and protects the heart from ventricular remodeling. The aim of this study was to determine the role of CTRP9 in ventricular remodeling induced by β1‐AA. Methods and Results Blood samples were collected from 131 patients with coronary heart disease and 131 healthy subjects. The serum levels of β1‐AA and CTRP9 were detected using ELISA. The results revealed that CTRP9 levels in β1‐AA–positive patients were lower than those in β1‐AA–negative patients, and serum CTRP9 concentrations were inversely correlated with β1‐AA. β1‐AA monoclonal antibodies (β1‐AAmAbs) were administered in mice with and without rAAV9‐cTnT‐Full Ctrp9‐FLAG virus for 8 weeks. Reverse transcription–polymerase chain reaction/Western analysis showed that cardiomyocyte CTRP9 expression was significantly reduced in β1‐AAmAb–treated mice. Moreover, compared with the β1‐AAmAb alone group, cardiac‐specific CTRP9 overexpression improved cardiac function, attenuated adverse remodeling, and ameliorated cardiomyocyte apoptosis and fibrosis. Mechanistic studies demonstrated that CTRP9 overexpression decreased the levels of G‐protein–coupled receptor kinase 2 and promoted the activation of AMP‐dependent kinase pathway. However, cardiac‐specific overexpression of CTRP9 had no effect on the levels of cAMP and protein kinase A activity elevated by β1‐AAmAb. Conclusions This study provides the first evidence that the long‐term existence of β1‐AAmAb suppresses cardiac CTRP9 expression and exaggerates cardiac remodeling, suggesting that CTRP9 may be a novel therapeutic target against pathologic remodeling in β1‐AA–positive patients with coronary heart disease.
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Affiliation(s)
- Yunhui Du
- 1 Beijing Anzhen Hospital Capital Medical University Beijing Institute of Heart, Lung and Blood Vessel Diseases Beijing China
| | - Shihan Zhang
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China
| | - Haicun Yu
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China.,4 Zhengzhou Central Hospital affiliated of Zhengzhou University Henan Province China
| | - Ye Wu
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China
| | - Ning Cao
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China
| | - Wen Wang
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China
| | - Wenli Xu
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China
| | - Yuming Li
- 3 Department of Basic Medical Sciences Yanjing Medical College Capital Medical University Beijing China
| | - Huirong Liu
- 2 Department of Physiology and Pathophysiology School of Basic Medical Sciences Capital Medical University Beijing China
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Shang L, Zhang L, Shao M, Feng M, Shi J, Dong Z, Guo Q, Xiaokereti J, Xiang R, Sun H, Zhou X, Tang B. Elevated β1-Adrenergic Receptor Autoantibody Levels Increase Atrial Fibrillation Susceptibility by Promoting Atrial Fibrosis. Front Physiol 2020; 11:76. [PMID: 32116783 PMCID: PMC7028693 DOI: 10.3389/fphys.2020.00076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/23/2020] [Indexed: 01/11/2023] Open
Abstract
Objective Beta 1-adrenergic receptor autoantibodies (β1ARAbs) have been identified as a pathogenic factor in atrial fibrillation (AF), but the underlying pathogenetic mechanism is not well understood. We assessed the hypothesis that elevated β1ARAb levels increase AF susceptibility by promoting atrial fibrosis. Methods A total of 70 patients with paroxysmal AF were continuously recruited. The serum levels of β1ARAb and circulating fibrosis biomarkers were analyzed by ELISA. Linear regression was used to examine the correlations of β1ARAb levels with left atrial diameter (LAD) and circulating fibrosis biomarker levels. Furthermore, we established a rabbit β1ARAb overexpression model. We conducted electrophysiological studies and multielectrode array recordings to evaluate the atrial effective refractory period (AERP), AF inducibility and electrical conduction. AF was defined as irregular, rapid atrial beats > 500 bpm for > 1000 ms. Echocardiography, hematoxylin and eosin staining, Masson's trichrome staining, and picrosirius red staining were performed to evaluate changes in atrial structure and detect fibrosis. Western blotting and PCR were used to detect alterations in the protein and mRNA expression of TGF-β1, collagen I and collagen III. Results Patients with a LAD ≥ 40 mm had higher β1ARAb levels than patients with a smaller LAD (8.87 ± 3.16 vs. 6.75 ± 1.34 ng/mL, P = 0.005). β1ARAb levels were positively correlated with LAD and circulating biomarker levels (all P < 0.05). Compared with the control group, the rabbits in the immune group showed the following: (1) enhanced heart rate, shortened AERP (70.00 ± 5.49 vs. 96.46 ± 3.27 ms, P < 0.001), increased AF inducibility (55% vs. 0%, P < 0.001), decreased conduction velocity and increased conduction heterogeneity; (2) enlarged LAD and elevated systolic dysfunction; (3) significant fibrosis in the left atrium identified by Masson's trichrome staining (15.17 ± 3.46 vs. 4.92 ± 1.72%, P < 0.001) and picrosirius red staining (16.76 ± 6.40 vs. 4.85 ± 0.40%, P < 0.001); and (4) increased expression levels of TGF-β1, collagen I and collagen III. Conclusion Our clinical and experiential studies showed that β1ARAbs participate in the development of AF and that the potential mechanism is related to the promotion of atrial fibrosis.
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Affiliation(s)
- Luxiang Shang
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ling Zhang
- Institute of Clinical Medical Research, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Mengjiao Shao
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Min Feng
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jia Shi
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Zhenyu Dong
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Qilong Guo
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jiasuoer Xiaokereti
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ran Xiang
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Huaxin Sun
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xianhui Zhou
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Baopeng Tang
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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The Role of Cyclic AMP Signaling in Cardiac Fibrosis. Cells 2019; 9:cells9010069. [PMID: 31888098 PMCID: PMC7016856 DOI: 10.3390/cells9010069] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/23/2019] [Accepted: 12/24/2019] [Indexed: 12/18/2022] Open
Abstract
Myocardial stress and injury invariably promote remodeling of the cardiac tissue, which is associated with cardiomyocyte death and development of fibrosis. The fibrotic process is initially triggered by the differentiation of resident cardiac fibroblasts into myofibroblasts. These activated fibroblasts display increased proliferative capacity and secrete large amounts of extracellular matrix. Uncontrolled myofibroblast activation can thus promote heart stiffness, cardiac dysfunction, arrhythmias, and progression to heart failure. Despite the well-established role of myofibroblasts in mediating cardiac disease, our current knowledge on how signaling pathways promoting fibrosis are regulated and coordinated in this cell type is largely incomplete. In this respect, cyclic adenosine monophosphate (cAMP) signaling acts as a major modulator of fibrotic responses activated in fibroblasts of injured or stressed hearts. In particular, accumulating evidence now suggests that upstream cAMP modulators including G protein-coupled receptors, adenylyl cyclases (ACs), and phosphodiesterases (PDEs); downstream cAMP effectors such as protein kinase A (PKA) and the guanine nucleotide exchange factor Epac; and cAMP signaling organizers such as A-kinase anchoring proteins (AKAPs) modulate a variety of fundamental cellular processes involved in myocardial fibrosis including myofibroblast differentiation, proliferation, collagen secretion, and invasiveness. The current review will discuss recent advances highlighting the role of cAMP and AKAP-mediated signaling in regulating pathophysiological responses controlling cardiac fibrosis.
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Liu Y, Afzal J, Vakrou S, Greenland GV, Talbot CC, Hebl VB, Guan Y, Karmali R, Tardiff JC, Leinwand LA, Olgin JE, Das S, Fukunaga R, Abraham MR. Differences in microRNA-29 and Pro-fibrotic Gene Expression in Mouse and Human Hypertrophic Cardiomyopathy. Front Cardiovasc Med 2019; 6:170. [PMID: 31921893 PMCID: PMC6928121 DOI: 10.3389/fcvm.2019.00170] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 11/08/2019] [Indexed: 12/11/2022] Open
Abstract
Background: Hypertrophic cardiomyopathy (HCM) is characterized by myocyte hypertrophy and fibrosis. Studies in two mouse models (R92W-TnT/R403Q-MyHC) at early HCM stage revealed upregulation of endothelin (ET1) signaling in both mutants, but TGFβ signaling only in TnT mutants. Dysregulation of miR-29 expression has been implicated in cardiac fibrosis. But it is unknown whether expression of miR-29a/b/c and profibrotic genes is commonly regulated in mouse and human HCM. Methods: In order to understand mechanisms underlying fibrosis in HCM, and examine similarities/differences in expression of miR-29a/b/c and several profibrotic genes in mouse and human HCM, we performed parallel studies in rat cardiac myocyte/fibroblast cultures, examined gene expression in two mouse models of (non-obstructive) HCM (R92W-TnT, R403Q-MyHC)/controls at early (5 weeks) and established (24 weeks) disease stage, and analyzed publicly available mRNA/miRNA expression data from obstructive-HCM patients undergoing septal myectomy/controls (unused donor hearts). Results: Myocyte cultures: ET1 increased superoxide/H2O2, stimulated TGFβ expression/secretion, and suppressed miR-29a expression in myocytes. The effect of ET1 on miR-29 and TGFβ expression/secretion was antagonized by N-acetyl-cysteine, a reactive oxygen species scavenger. Fibroblast cultures: ET1 had no effect on pro-fibrotic gene expression in fibroblasts. TGFβ1/TGFβ2 suppressed miR-29a and increased collagen expression, which was abolished by miR-29a overexpression. Mouse and human HCM: Expression of miR-29a/b/c was lower, and TGFB1/collagen gene expression was higher in TnT mutant-LV at 5 and 24 weeks; no difference was observed in expression of these genes in MyHC mutant-LV and in human myectomy tissue. TGFB2 expression was higher in LV of both mutant mice and human myectomy tissue. ACE2, a negative regulator of the renin-angiotensin-aldosterone system, was the most upregulated transcript in human myectomy tissue. Pathway analysis predicted upregulation of the anti-hypertrophic/anti-fibrotic liver X receptor/retinoid X receptor (LXR/RXR) pathway only in human myectomy tissue. Conclusions: Our in vitro studies suggest that activation of ET1 signaling in cardiac myocytes increases reactive oxygen species and stimulates TGFβ secretion, which downregulates miR-29a and increases collagen in fibroblasts, thus contributing to fibrosis. Our gene expression studies in mouse and human HCM reveal allele-specific differences in miR-29 family/profibrotic gene expression in mouse HCM, and activation of anti-hypertrophic/anti-fibrotic genes and pathways in human HCM.
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Affiliation(s)
- Yamin Liu
- Division of Cardiology, Hypertrophic Cardiomyopathy Center of Excellence, University of California, San Francisco, San Francisco, CA, United States.,Hypertrophic Cardiomyopathy Center of Excellence, Johns Hopkins University, Baltimore, MD, United States
| | - Junaid Afzal
- Division of Cardiology, Hypertrophic Cardiomyopathy Center of Excellence, University of California, San Francisco, San Francisco, CA, United States.,Hypertrophic Cardiomyopathy Center of Excellence, Johns Hopkins University, Baltimore, MD, United States
| | - Styliani Vakrou
- Hypertrophic Cardiomyopathy Center of Excellence, Johns Hopkins University, Baltimore, MD, United States
| | - Gabriela V Greenland
- Division of Cardiology, Hypertrophic Cardiomyopathy Center of Excellence, University of California, San Francisco, San Francisco, CA, United States.,Hypertrophic Cardiomyopathy Center of Excellence, Johns Hopkins University, Baltimore, MD, United States
| | - C Conover Talbot
- Johns Hopkins School of Medicine, Institute for Basic Biomedical Sciences, Baltimore, MD, United States
| | - Virginia B Hebl
- Intermountain Medical Center, Intermountain Heart Institute, Murray, UT, United States
| | - Yufan Guan
- Hypertrophic Cardiomyopathy Center of Excellence, Johns Hopkins University, Baltimore, MD, United States
| | - Rehan Karmali
- Division of Cardiology, Hypertrophic Cardiomyopathy Center of Excellence, University of California, San Francisco, San Francisco, CA, United States
| | - Jil C Tardiff
- Sarver Heart Center, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Leslie A Leinwand
- Molecular, Cellular and Developmental Biology, Biofrontiers Institute, University of Colorado, Boulder, CO, United States
| | - Jeffrey E Olgin
- Division of Cardiology, Hypertrophic Cardiomyopathy Center of Excellence, University of California, San Francisco, San Francisco, CA, United States
| | - Samarjit Das
- Department of Anesthesia and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Ryuya Fukunaga
- Department of Biological Chemistry, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - M Roselle Abraham
- Division of Cardiology, Hypertrophic Cardiomyopathy Center of Excellence, University of California, San Francisco, San Francisco, CA, United States.,Hypertrophic Cardiomyopathy Center of Excellence, Johns Hopkins University, Baltimore, MD, United States
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26
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Cao N, Chen H, Bai Y, Yang X, Xu W, Hao W, Zhou Y, Chai J, Wu Y, Wang Z, Yin X, Wang L, Wang W, Liu H, Fu MLX. β2-adrenergic receptor autoantibodies alleviated myocardial damage induced by β1-adrenergic receptor autoantibodies in heart failure. Cardiovasc Res 2019; 114:1487-1498. [PMID: 29746700 DOI: 10.1093/cvr/cvy105] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/03/2018] [Indexed: 01/27/2023] Open
Abstract
Aims β1-adrenergic receptor autoantibodies (β1-AAs) and β2-adrenergic receptor autoantibodies (β2-AAs) are present in patients with heart failure (HF); however, their interrelationship with cardiac structure and function remains unknown. This study explored the effects of the imbalance between β1-AAs and β2-AAs on cardiac structure and its underlying mechanisms in HF. Methods and results Patients with left systolic HF who suffered from coronary heart disease (65.9%) or dilated cardiomyopathy (34.1%) were divided into New York Heart Association Classes I-II (n = 51) and Classes III-IV (n = 37) and compared with healthy volunteers as controls (n = 41). Total immunoglobulin G from HF patient serum comprising β1-AAs and/or β2-AAs were determined and purified for in vitro studies from neonatal rat cardiomyocytes (NRCMs). In addition, HF was induced by doxorubicin in mice. We observed that the increased ratio of β1-AAs/β2-AAs was associated with worsening HF in patients. Moreover, β2-AAs from patients with HF suppressed the hyper-shrinking and apoptosis of NRCMS induced by β1-AAs from some patients. Finally, β2-AAs alleviated both myocardial damage and β1-AAs production induced by doxorubicin in mice. Conclusion β2-AAs were capable of antagonizing the effects imposed by β1-AAs both in vitro and in vivo. The imbalance of β1-AAs and β2-AAs in patients with HF is a mechanism underlying HF progression, and the increasing ratio of β1-AAs/β2-AAs should be considered a clinical assessment factor for the deterioration of cardiac function in patients with HF.
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Affiliation(s)
- Ning Cao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Hao Chen
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Yan Bai
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Xiaochun Yang
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, and Beijng Institute of Heart, Lung and Blood Vessel Disease, Beijing, PR China
| | - Wenli Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Weiwei Hao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Yi Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Jiayin Chai
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Ye Wu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Zhaojia Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Xiaochen Yin
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Li Wang
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Wen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Disease, Capital Medical University, Beijing, PR China
| | - Michael L X Fu
- Section of Cardiology, Department of Medicine, Sahlgrenska University Hospital/Östra Hospital, Göteborg, Sweden
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27
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2,5-Dimethylcelecoxib prevents isoprenaline-induced cardiomyocyte hypertrophy and cardiac fibroblast activation by inhibiting Akt-mediated GSK-3 phosphorylation. Biochem Pharmacol 2019; 168:82-90. [DOI: 10.1016/j.bcp.2019.06.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/18/2019] [Indexed: 11/22/2022]
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28
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Ito A, Ohnuki Y, Suita K, Ishikawa M, Mototani Y, Shiozawa K, Kawamura N, Yagisawa Y, Nariyama M, Umeki D, Nakamura Y, Okumura S. Role of β-adrenergic signaling in masseter muscle. PLoS One 2019; 14:e0215539. [PMID: 30986276 PMCID: PMC6464212 DOI: 10.1371/journal.pone.0215539] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 04/03/2019] [Indexed: 02/07/2023] Open
Abstract
In skeletal muscle, the major isoform of β-adrenergic receptor (β-AR) is β2-AR and the minor isoform is β1-AR, which is opposite to the situation in cardiac muscle. Despite extensive studies in cardiac muscle, the physiological roles of the β-AR subtypes in skeletal muscle are not fully understood. Therefore, in this work, we compared the effects of chronic β1- or β2-AR activation with a specific β1-AR agonist, dobutamine (DOB), or a specific β2-AR agonist, clenbuterol (CB), on masseter and cardiac muscles in mice. In cardiac muscle, chronic β1-AR stimulation induced cardiac hypertrophy, fibrosis and myocyte apoptosis, whereas chronic β2-AR stimulation induced cardiac hypertrophy without histological abnormalities. In masseter muscle, however, chronic β1-AR stimulation did not induce muscle hypertrophy, but did induce fibrosis and apoptosis concomitantly with increased levels of p44/42 MAPK (ERK1/2) (Thr-202/Tyr-204), calmodulin kinase II (Thr-286) and mammalian target of rapamycin (mTOR) (Ser-2481) phosphorylation. On the other hand, chronic β2-AR stimulation in masseter muscle induced muscle hypertrophy without histological abnormalities, as in the case of cardiac muscle, concomitantly with phosphorylation of Akt (Ser-473) and mTOR (Ser-2448) and increased expression of microtubule-associated protein light chain 3-II, an autophagosome marker. These results suggest that the β1-AR pathway is deleterious and the β2-AR is protective in masseter muscle. These data should be helpful in developing pharmacological approaches for the treatment of skeletal muscle wasting and weakness.
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Affiliation(s)
- Aiko Ito
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Yoshiki Ohnuki
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Kenji Suita
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Misao Ishikawa
- Department of Oral Anatomy, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Yasumasa Mototani
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Kouichi Shiozawa
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Naoya Kawamura
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
- Department of Periodontology, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Yuka Yagisawa
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Megumi Nariyama
- Department of Pediatric Dentistry, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Daisuke Umeki
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Yoshiki Nakamura
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Satoshi Okumura
- Department of Physiology, Tsurumi University School of Dental Medicine, Yokohama, Japan
- * E-mail:
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29
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Activation of T Lymphocytes as a Novel Mechanism in Beta1-Adrenergic Receptor Autoantibody-Induced Cardiac Remodeling. Cardiovasc Drugs Ther 2019; 33:149-161. [DOI: 10.1007/s10557-019-06856-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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30
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Du Y, Zhang S, Hao W, Xu W, Yan L, Liu H. Pro-remodeling effect of autoantibody against β 1-adrenoceptor on cardiomyocytes involves T cells dysfunction under the pathological condition of heart failure. Biochem Biophys Res Commun 2019; 510:163-170. [PMID: 30678811 DOI: 10.1016/j.bbrc.2019.01.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 01/16/2019] [Indexed: 11/24/2022]
Abstract
Autoantibody against β1-adrenoceptor (β1-AA) has been shown to be closely linked to the aggravation of heart failure. Removal of β1-AA remarkably attenuated patients' cardiac dysfunction. We found that β1-AA induced rat heart failure with increased CD4+ T cells. However, whether or not β1-AA interacts with T cells isolated from heart failure patients remains unknown. Twenty-one β1-AA-negative heart failure patients were divided into those taking β-adrenergic blocker and those not. The effects of β1-AA monoclonal antibodies (β1-AAmAb) on T cells proliferation were detected using the CCK-8 assay. IFN-γ and IL-4 production by human T cells were measured by after the administration of β1-AAmAb. The levels of cardiomyocyte apoptosis and hypertrophy were detected after co-cultured with the supernatant of T cells pre-stimulated by β1-AAmAb. It was found that β1-AAmAb promoted T cell proliferation via the β1-AR/cAMP/PKA pathway in patients who not take β-blocker. β1-AAmAb inhibited the characteristic cytokine secretion of Th1, IFN-γ, but had no significant effect on the Th2 cytokine IL-4. Supernatant resulted from the T cells pre-treated with β1-AAmAb induced cardiomyocytes remodeling, as evidenced by increased levels of cardiomyocytes apoptosis and hypertrophy. We propose that heart failure is likely to be an interference factor for Th-mediated immunity, and the presence of β1-AAmAb may aggravate this effect and deteriorate concomitant inflammatory injury in cardiomyocytes, partially via β1-AR/cAMP/PKA pathway.
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Affiliation(s)
- Yunhui Du
- Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Shihan Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Wenjing Hao
- Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Wenli Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Li Yan
- Department of Pathophysiology, Institute of Basic Medical Science, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
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31
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Yuan YH, Zheng XM, He XH, Liu LP, Xu W, Xia XH, Luo JH, Lyu M, Zhu QL, Wang S, Wu S. [Establishment of cardiac remodeling model in FVB/N mice by intraperitoneal injection of isoproterenol]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:508-513. [PMID: 29972128 PMCID: PMC7389954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/08/2018] [Indexed: 08/01/2024]
Abstract
OBJECTIVE To explore the feasibility of intraperitoneal injection of isoproterenol (ISO) to induce cardiac remodeling in FVB/N mice. METHODS Forty-eight FVB/N mice were divided into back subcutaneous saline group (subcutaneous saline group), intraperitoneal saline group, back subcutaneous ISO group (subcutaneous ISO group), and intraperitoneal ISO group according to the route of administration of saline or ISO. ISO (30 μg/g body weight/day) was given to the subcutaneous ISO group and the intraperitoneal ISO group, twice daily with an interval of 12 hours, for 14 consecutive days. The subcutaneous saline group and the intraperitoneal saline group were injected with an equal volume of saline. The left ventricular end-diastolic posterior wall thickness was measured by echocardiography, and the ratio of heart weight to tibia length was determined. Hematoxylin-eosin staining was used to determine the myocardial fiber diameter. Picric-sirius red staining was used to determine the myocardial collagen deposition area. Quantitative real-time PCR was used to measure the mRNA expression of collagen I. RESULTS Compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups, the intraperitoneal ISO group had increased sizes of the cardiac cavity and the heart. Compared with the subcutaneous saline and intraperitoneal saline groups, the subcutaneous ISO group showed no significant changes in the gross morphology of the cardiac cavity and the heart. The intraperitoneal ISO group showed significant increases in the ratio of heart weight to tibia length, myocardial fiber diameter, left ventricular end-diastolic posterior wall thickness, myocardial collagen area percentage, and the mRNA expression of collagen I compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups (P<0.01). There were no significant differences in the above five indices between the subcutaneous ISO group and the subcutaneous saline and intraperitoneal saline groups (P>0.05). No significant difference in the mortality rate was found between the subcutaneous ISO and intraperitoneal ISO groups (P>0.05). CONCLUSIONS Intraperitoneal injection of ISO can induce cardiac hypertrophy and fibrosis in FVB/N mice.
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Affiliation(s)
- Yong-Hua Yuan
- Department of Pediatric Cardiology, Hunan People's Hospital, Changsha 410005, China.
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32
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Yuan YH, Zheng XM, He XH, Liu LP, Xu W, Xia XH, Luo JH, Lyu M, Zhu QL, Wang S, Wu S. [Establishment of cardiac remodeling model in FVB/N mice by intraperitoneal injection of isoproterenol]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:508-513. [PMID: 29972128 PMCID: PMC7389954 DOI: 10.7499/j.issn.1008-8830.2018.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the feasibility of intraperitoneal injection of isoproterenol (ISO) to induce cardiac remodeling in FVB/N mice. METHODS Forty-eight FVB/N mice were divided into back subcutaneous saline group (subcutaneous saline group), intraperitoneal saline group, back subcutaneous ISO group (subcutaneous ISO group), and intraperitoneal ISO group according to the route of administration of saline or ISO. ISO (30 μg/g body weight/day) was given to the subcutaneous ISO group and the intraperitoneal ISO group, twice daily with an interval of 12 hours, for 14 consecutive days. The subcutaneous saline group and the intraperitoneal saline group were injected with an equal volume of saline. The left ventricular end-diastolic posterior wall thickness was measured by echocardiography, and the ratio of heart weight to tibia length was determined. Hematoxylin-eosin staining was used to determine the myocardial fiber diameter. Picric-sirius red staining was used to determine the myocardial collagen deposition area. Quantitative real-time PCR was used to measure the mRNA expression of collagen I. RESULTS Compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups, the intraperitoneal ISO group had increased sizes of the cardiac cavity and the heart. Compared with the subcutaneous saline and intraperitoneal saline groups, the subcutaneous ISO group showed no significant changes in the gross morphology of the cardiac cavity and the heart. The intraperitoneal ISO group showed significant increases in the ratio of heart weight to tibia length, myocardial fiber diameter, left ventricular end-diastolic posterior wall thickness, myocardial collagen area percentage, and the mRNA expression of collagen I compared with the subcutaneous ISO, subcutaneous saline, and intraperitoneal saline groups (P<0.01). There were no significant differences in the above five indices between the subcutaneous ISO group and the subcutaneous saline and intraperitoneal saline groups (P>0.05). No significant difference in the mortality rate was found between the subcutaneous ISO and intraperitoneal ISO groups (P>0.05). CONCLUSIONS Intraperitoneal injection of ISO can induce cardiac hypertrophy and fibrosis in FVB/N mice.
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Affiliation(s)
- Yong-Hua Yuan
- Department of Pediatric Cardiology, Hunan People's Hospital, Changsha 410005, China.
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33
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Tao H, Song ZY, Ding XS, Yang JJ, Shi KH, Li J. Epigenetic signatures in cardiac fibrosis, special emphasis on DNA methylation and histone modification. Heart Fail Rev 2018; 23:789-799. [DOI: 10.1007/s10741-018-9694-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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34
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Abstract
It has been recognized that myocardial apoptosis is one major factor in the development of heart dysfunction and autophagy has been shown to influence the apoptosis. In previous studies, we reported that anti-β1-adrenergic receptor autoantibodies (β1-AABs) decreased myocardial autophagy, but the role of decreased autophagy in cardiomyocyte apoptosis remains unclear. In the present study, we used a β1-AAB-immunized rat model to investigate the role of decreased autophagy in cardiomyocyte apoptosis. We reported that the level of autophagic flux increased early and then decreased in an actively β1-AAB-immunized rat model. Rapamycin, an mTOR inhibitor, restored myocardial apoptosis in the presence of β1-AABs. Further, we found that the early increase of autophagy was an adaptive stress response that is possibly unrelated to β1-AR, and the activation of the β1-AR and PKA contributed to late decreased autophagy. Then, after upregulating or inhibiting autophagy with rapamycin, Atg5 overexpression adenovirus or 3-methyladenine in cultured primary neonatal rat cardiomyocytes, we found that autophagy decline promoted myocardial apoptosis effectively through the mitochondrial apoptotic pathway. In conclusion, the reduction of apoptosis through the proper regulation of autophagy may be important for treating patients with β1-AAB-positive heart dysfunction.
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35
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Ryzhov S, Robich MP, Roberts DJ, Favreau-Lessard AJ, Peterson SM, Jachimowicz E, Rath R, Vary CPH, Quinn R, Kramer RS, Sawyer DB. ErbB2 promotes endothelial phenotype of human left ventricular epicardial highly proliferative cells (eHiPC). J Mol Cell Cardiol 2018; 115:39-50. [PMID: 29291395 PMCID: PMC5926239 DOI: 10.1016/j.yjmcc.2017.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 12/20/2017] [Accepted: 12/28/2017] [Indexed: 12/13/2022]
Abstract
The adult human heart contains a subpopulation of highly proliferative cells. The role of ErbB receptors in these cells has not been studied. From human left ventricular (LV) epicardial biopsies, we isolated highly proliferative cells (eHiPC) to characterize the cell surface expression and function of ErbB receptors in the regulation of cell proliferation and phenotype. We found that human LV eHiPC express all four ErbB receptor subtypes. However, the expression of ErbB receptors varied widely among eHiPC isolated from different subjects. eHiPC with higher cell surface expression of ErbB2 reproduced the phenotype of endothelial cells and were characterized by endothelial cell-like functional properties. We also found that EGF/ErbB1 induces VEGFR2 expression, while ligands for both ErbB1 and ErbB3/4 induce expression of Tie2. The number of CD31posCD45neg endothelial cells is higher in LV biopsies from subjects with high ErbB2 (ErbB2high) eHiPC compared to low ErbB2 (ErbB2low) eHiPC. These findings have important implications for potential strategies to increase the efficacy of cell-based revascularization of the injured heart, through promotion of an endothelial phenotype in cardiac highly proliferative cells.
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Affiliation(s)
- Sergey Ryzhov
- Maine Medical Center Research Institute, Scarborough, ME, United States
| | - Michael P Robich
- Maine Medical Center Research Institute, Scarborough, ME, United States; Maine Medical Center, Portland, ME, United States
| | - Daniel J Roberts
- Maine Medical Center Research Institute, Scarborough, ME, United States; Maine Medical Center, Portland, ME, United States
| | | | - Sarah M Peterson
- Maine Medical Center Research Institute, Scarborough, ME, United States
| | | | - Rutwik Rath
- Maine Medical Center Research Institute, Scarborough, ME, United States
| | - Calvin P H Vary
- Maine Medical Center Research Institute, Scarborough, ME, United States
| | - Reed Quinn
- Maine Medical Center, Portland, ME, United States
| | | | - Douglas B Sawyer
- Maine Medical Center Research Institute, Scarborough, ME, United States; Maine Medical Center, Portland, ME, United States.
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36
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Grzelka K, Kurowski P, Gawlak M, Szulczyk P. Noradrenaline Modulates the Membrane Potential and Holding Current of Medial Prefrontal Cortex Pyramidal Neurons via β 1-Adrenergic Receptors and HCN Channels. Front Cell Neurosci 2017; 11:341. [PMID: 29209170 PMCID: PMC5701640 DOI: 10.3389/fncel.2017.00341] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/16/2017] [Indexed: 12/27/2022] Open
Abstract
The medial prefrontal cortex (mPFC) receives dense noradrenergic projections from the locus coeruleus. Adrenergic innervation of mPFC pyramidal neurons plays an essential role in both physiology (control of memory formation, attention, working memory, and cognitive behavior) and pathophysiology (attention deficit hyperactivity disorder, posttraumatic stress disorder, cognitive deterioration after traumatic brain injury, behavioral changes related to addiction, Alzheimer's disease and depression). The aim of this study was to elucidate the mechanism responsible for adrenergic receptor-mediated control of the resting membrane potential in layer V mPFC pyramidal neurons. The membrane potential or holding current of synaptically isolated layer V mPFC pyramidal neurons was recorded in perforated-patch and classical whole-cell configurations in slices from young rats. Application of noradrenaline (NA), a neurotransmitter with affinity for all types of adrenergic receptors, evoked depolarization or inward current in the tested neurons irrespective of whether the recordings were performed in the perforated-patch or classical whole-cell configuration. The effect of noradrenaline depended on β1- and not α1- or α2-adrenergic receptor stimulation. Activation of β1-adrenergic receptors led to an increase in inward Na+ current through hyperpolarization-activated cyclic nucleotide-gated (HCN) channels, which carry a mixed Na+/K+ current. The protein kinase A- and C-, glycogen synthase kinase-3β- and tyrosine kinase-linked signaling pathways were not involved in the signal transduction between β1-adrenergic receptors and HCN channels. The transduction system operated in a membrane-delimited fashion and involved the βγ subunit of G-protein. Thus, noradrenaline controls the resting membrane potential and holding current in mPFC pyramidal neurons through β1-adrenergic receptors, which in turn activate HCN channels via a signaling pathway involving the βγ subunit.
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Affiliation(s)
- Katarzyna Grzelka
- Laboratory of Physiology and Pathophysiology, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
| | | | | | - Paweł Szulczyk
- Laboratory of Physiology and Pathophysiology, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
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37
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Neuroanatomy of the spleen: Mapping the relationship between sympathetic neurons and lymphocytes. PLoS One 2017; 12:e0182416. [PMID: 28753658 PMCID: PMC5533443 DOI: 10.1371/journal.pone.0182416] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 07/18/2017] [Indexed: 12/25/2022] Open
Abstract
The nervous system plays a profound regulatory role in maintaining appropriate immune responses by signaling to immune cells. These immune cells, including B- and T-cells, can further act as intermediary messengers, with subsets of B- and T-cells expressing choline acetyltransferase (ChAT), the enzyme required for acetylcholine (ACh) synthesis. Neural control of ACh release from ChAT+ T-cells can have powerful immune implications, regulating lymphocyte trafficking, inflammation, and prevent death due to experimental septic shock. Although ACh release from T-cells has been proposed to occur following norepinephrine (NE) released from sympathetic nerve terminals in the spleen, it is unknown how this communication occurs. While it was proposed that tyrosine hydroxylase (TH+) axons form synapse-like structures with ChAT+ T-cells, there is scant evidence to support or refute this phenomenon. With this in mind, we sought to determine the relative abundance of ChAT+ B- and T-cells in close proximity to TH+ axons, and determine what factors contribute to their localization in the spleen. Using confocal microscopy of tissue sections and three-dimensional imaging of intact spleen, we confirmed that ChAT+ B-cells exceed the number of ChAT+ T-cells, and overall few ChAT+ B- or T-cells are located close to TH+ fibers compared to total numbers. The organized location of ChAT+ lymphocytes within the spleen suggested that these cells were recruited by chemokine gradients. We identified ChAT+ B- and T-cells express the chemokine receptor CXCR5; indicating that these cells can respond to CXCL13 produced by stromal cells expressing the β2 adrenergic receptor in the spleen. Our findings suggest that sympathetic innervation contributes to organization of ChAT+ immune cells in the white pulp of the spleen by regulating CXCL13. Supporting this contention, chemical sympathectomy significantly reduced expression of this chemokine. Together, we demonstrated that there does not appear to be a basis for synaptic neuro-immune communication, and that sympathetic innervation can modulate immune function through altering stromal cell chemokine production.
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Liu Y, Zhang J, Liu S, Wang W, Chen X, Jiang H, Li J, Wang K, Bai W, Zhang H, Qin L. Effects of oestrogen andCimicifuga racemosaon the cardiac noradrenaline pathway of ovariectomized rats. Exp Physiol 2017; 102:974-984. [PMID: 28590038 DOI: 10.1113/ep086285] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 06/05/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Yao Liu
- Department of Cardiology; Peking University People's Hospital; Beijing 100044 China
| | - Jing Zhang
- Department of Anatomy and Embryology; Peking University Health Science Center; Beijing 100191 China
| | - Shuya Liu
- Department of Stomatology; General Hospital of Armed Police; Beijing 100039 China
| | - Wenjuan Wang
- Department of Anatomy and Embryology; Peking University Health Science Center; Beijing 100191 China
| | - Xing Chen
- Department of Obstetrics and Gynecology; Peking University First Hospital; 100034 Beijing China
| | - Hai Jiang
- Department of Anatomy and Embryology; Peking University Health Science Center; Beijing 100191 China
| | - Junlei Li
- Department of Cardiology; Peking University People's Hospital; Beijing 100044 China
| | - Ke Wang
- Department of Anatomy and Embryology; Peking University Health Science Center; Beijing 100191 China
| | - Wenpei Bai
- Department of Obstetrics and Gynecology; Shijitan Hospital; Beijing 100038 China
| | - Haicheng Zhang
- Department of Cardiology; Peking University People's Hospital; Beijing 100044 China
| | - Lihua Qin
- Department of Anatomy and Embryology; Peking University Health Science Center; Beijing 100191 China
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