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Sorge M, Savoré G, Gallo A, Acquarone D, Sbroggiò M, Velasco S, Zamporlini F, Femminò S, Moiso E, Morciano G, Balmas E, Raimondi A, Nattenberg G, Stefania R, Tacchetti C, Rizzo AM, Corsetto P, Ghigo A, Turco E, Altruda F, Silengo L, Pinton P, Raffaelli N, Sniadecki NJ, Penna C, Pagliaro P, Hirsch E, Riganti C, Tarone G, Bertero A, Brancaccio M. An intrinsic mechanism of metabolic tuning promotes cardiac resilience to stress. EMBO Mol Med 2024; 16:2450-2484. [PMID: 39271959 PMCID: PMC11473679 DOI: 10.1038/s44321-024-00132-z] [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: 05/22/2024] [Revised: 08/08/2024] [Accepted: 08/09/2024] [Indexed: 09/15/2024] Open
Abstract
Defining the molecular mechanisms underlying cardiac resilience is crucial to find effective approaches to protect the heart. A physiologic level of ROS is produced in the heart by fatty acid oxidation, but stressful events can boost ROS and cause mitochondrial dysfunction and cardiac functional impairment. Melusin is a muscle specific chaperone required for myocardial compensatory remodeling during stress. Here we report that Melusin localizes in mitochondria where it binds the mitochondrial trifunctional protein, a key enzyme in fatty acid oxidation, and decreases it activity. Studying both mice and human induced pluripotent stem cell-derived cardiomyocytes, we found that Melusin reduces lipid oxidation in the myocardium and limits ROS generation in steady state and during pressure overload and doxorubicin treatment, preventing mitochondrial dysfunction. Accordingly, the treatment with the lipid oxidation inhibitor Trimetazidine concomitantly with stressful stimuli limits ROS accumulation and prevents long-term heart dysfunction. These findings disclose a physiologic mechanism of metabolic regulation in the heart and demonstrate that a timely restriction of lipid metabolism represents a potential therapeutic strategy to improve cardiac resilience to stress.
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Affiliation(s)
- Matteo Sorge
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy.
| | - Giulia Savoré
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Andrea Gallo
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Davide Acquarone
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Mauro Sbroggiò
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Silvia Velasco
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Federica Zamporlini
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Saveria Femminò
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043, Italy
| | - Enrico Moiso
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Giampaolo Morciano
- Department of Medical Sciences, University of Ferrara, Ferrara, 44121, Italy
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, 48033, Italy
| | - Elisa Balmas
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Andrea Raimondi
- Experimental Imaging Centre, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, 20132, Italy
| | - Gabrielle Nattenberg
- Departments of Mechanical Engineering, Bioengineering, and Laboratory Medicine and Pathology, Institute for Stem Cell and Regenerative Medicine, and Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA
| | - Rachele Stefania
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Carlo Tacchetti
- Experimental Imaging Centre, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, 20132, Italy
| | - Angela Maria Rizzo
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milano, 20133, Italy
| | - Paola Corsetto
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milano, 20133, Italy
| | - Alessandra Ghigo
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Emilia Turco
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Lorenzo Silengo
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Paolo Pinton
- Department of Medical Sciences, University of Ferrara, Ferrara, 44121, Italy
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, 48033, Italy
| | - Nadia Raffaelli
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Nathan J Sniadecki
- Departments of Mechanical Engineering, Bioengineering, and Laboratory Medicine and Pathology, Institute for Stem Cell and Regenerative Medicine, and Center for Cardiovascular Biology, University of Washington, Seattle, WA, 98109, USA
| | - Claudia Penna
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043, Italy
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043, Italy
| | - Emilio Hirsch
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Chiara Riganti
- Department of Oncology, University of Turin, Torino, 10126, Italy
| | - Guido Tarone
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Alessandro Bertero
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy
| | - Mara Brancaccio
- Department of Molecular Biotechnologies and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Turin, 10126, Italy.
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Bonet F, Hernandez-Torres F, Ramos-Sánchez M, Quezada-Feijoo M, Bermúdez-García A, Daroca T, Alonso-Villa E, García-Padilla C, Mangas A, Toro R. Unraveling the Etiology of Dilated Cardiomyopathy through Differential miRNA-mRNA Interactome. Biomolecules 2024; 14:524. [PMID: 38785931 PMCID: PMC11117812 DOI: 10.3390/biom14050524] [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: 04/01/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/25/2024] Open
Abstract
Dilated cardiomyopathy (DCM) encompasses various acquired or genetic diseases sharing a common phenotype. The understanding of pathogenetic mechanisms and the determination of the functional effects of each etiology may allow for tailoring different therapeutic strategies. MicroRNAs (miRNAs) have emerged as key regulators in cardiovascular diseases, including DCM. However, their specific roles in different DCM etiologies remain elusive. Here, we applied mRNA-seq and miRNA-seq to identify the gene and miRNA signature from myocardial biopsies from four patients with DCM caused by volume overload (VCM) and four with ischemic DCM (ICM). Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis were used for differentially expressed genes (DEGs). The miRNA-mRNA interactions were identified by Pearson correlation analysis and miRNA target-prediction programs. mRNA-seq and miRNA-seq were validated by qRT-PCR and miRNA-mRNA interactions were validated by luciferase assays. We found 112 mRNAs and five miRNAs dysregulated in VCM vs. ICM. DEGs were positively enriched for pathways related to the extracellular matrix (ECM), mitochondrial respiration, cardiac muscle contraction, and fatty acid metabolism in VCM vs. ICM and negatively enriched for immune-response-related pathways, JAK-STAT, and NF-kappa B signaling. We identified four pairs of negatively correlated miRNA-mRNA: miR-218-5p-DDX6, miR-218-5p-TTC39C, miR-218-5p-SEMA4A, and miR-494-3p-SGMS2. Our study revealed novel miRNA-mRNA interaction networks and signaling pathways for VCM and ICM, providing novel insights into the development of these DCM etiologies.
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Affiliation(s)
- Fernando Bonet
- Medicine Department, School of Medicine, University of Cádiz (UCA), 11003 Cádiz, Spain; (F.B.); (E.A.-V.); (A.M.)
- Research Unit, Biomedical Research and Innovation Institute of Cádiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz, Spain
| | - Francisco Hernandez-Torres
- Department of Biochemistry and Molecular Biology III and Immunology, Faculty of Medicine, University of Granada, 18016 Granada, Spain
| | - Mónica Ramos-Sánchez
- Cardiology Department, Central de la Cruz Roja Hospital, 28003 Madrid, Spain; (M.R.-S.); (M.Q.-F.)
- Medicine Department, School of Medicine, Alfonso X EL Sabio University, 28691 Madrid, Spain
| | - Maribel Quezada-Feijoo
- Cardiology Department, Central de la Cruz Roja Hospital, 28003 Madrid, Spain; (M.R.-S.); (M.Q.-F.)
- Medicine Department, School of Medicine, Alfonso X EL Sabio University, 28691 Madrid, Spain
| | - Aníbal Bermúdez-García
- Cardiovascular Surgery Department, Puerta del Mar University Hospital, 11009 Cádiz, Spain (T.D.)
| | - Tomás Daroca
- Cardiovascular Surgery Department, Puerta del Mar University Hospital, 11009 Cádiz, Spain (T.D.)
| | - Elena Alonso-Villa
- Medicine Department, School of Medicine, University of Cádiz (UCA), 11003 Cádiz, Spain; (F.B.); (E.A.-V.); (A.M.)
- Research Unit, Biomedical Research and Innovation Institute of Cádiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz, Spain
| | | | - Alipio Mangas
- Medicine Department, School of Medicine, University of Cádiz (UCA), 11003 Cádiz, Spain; (F.B.); (E.A.-V.); (A.M.)
- Research Unit, Biomedical Research and Innovation Institute of Cádiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz, Spain
- Internal Medicine Department, Puerta del Mar University Hospital, 11009 Cádiz, Spain
| | - Rocio Toro
- Medicine Department, School of Medicine, University of Cádiz (UCA), 11003 Cádiz, Spain; (F.B.); (E.A.-V.); (A.M.)
- Research Unit, Biomedical Research and Innovation Institute of Cádiz (INiBICA), Puerta del Mar University Hospital, 11009 Cádiz, Spain
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3
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Han YC, Liu YT, Zhang H, Xu Y, Liu J, Chen H, Song N, Qin DL, Yang S. VDR alleviates endothelial cell injury in arteriovenous fistula through inhibition of P66Shc-mediated mitochondrial ROS. Sci Rep 2023; 13:11088. [PMID: 37422508 PMCID: PMC10329703 DOI: 10.1038/s41598-023-37510-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 06/22/2023] [Indexed: 07/10/2023] Open
Abstract
To investigate the effects and mechanism of Vitamin D receptor (VDR) signaling on arteriovenous fistula (AVF) endothelial cell injury. Venous tissues of AVF stenosis patients were collected and analyzed, vascular morphology, reactive oxygen species (ROS), and the expression of VDR, P66Shc, fibronectin (FN), collagen-1 (Col-1) were detected. In addition, human umbilical vein endothelial cells (HUVECs) was used in in vitro studies. HUVECs was incubated with transforming growth factor-beta (TGF-β, 50 ng/ml). Aditionally, paricalcitol, VDR overexpression plasmid and Pin1 inhibitor Juglone were used to investigate the regulatory mechanism of VDR in mitochondrial ROS. The parameters of ROS (e.g. MitoSox) and the expression of FN, Col-1 were tested. Moreover, the mitochondrial translocation of P66Shc was analyzed. The expression of VDR was obviously decreased in the venous tissues of AVF stenosis patients. On the contrary, the expression of P66Shc, P-P66Shc, FN, Col-1 and 8-OHdG were increased significantly in the venous tissues of AVF stenosis patients (P < 0.05). In line with this, the level of mitochondrial ROS and the expression of P66Shc, P-P66Shc, FN, Col-1 increased obviously in HUVECs cells under TGF-β condition. Both VDR over-expression plasmid and Pin1 inhibitor Juglone could alleviate TGF-β induced endothelial injury. Mechanistically, VDR overexpression plasmid and Juglone could inhibit the expression of Pin1, and then restrain P66Shc mitochondrial translocation, eventually reduce the level of mitochondrial ROS. Our research indicated that activation of VDR could alleviate venous endothelial cell dysfunction through inhibiting Pin1-mediated mitochondrial translocation of P66Shc and consequently reducing mitochondrial ROS. It suggested that VDR signaling might be an effective target for AVF stenosis treatment.
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Affiliation(s)
- Ya-Chun Han
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yu-Ting Liu
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Hao Zhang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Yong Xu
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Jun Liu
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Hong Chen
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Na Song
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Dong-Lu Qin
- Department of Cardiovascular, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Shikun Yang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, No.138, Tongzipo Road, Changsha, 410013, Hunan Province, China.
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4
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Sun X, Alford J, Qiu H. Structural and Functional Remodeling of Mitochondria in Cardiac Diseases. Int J Mol Sci 2021; 22:ijms22084167. [PMID: 33920673 PMCID: PMC8072869 DOI: 10.3390/ijms22084167] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 12/31/2022] Open
Abstract
Mitochondria undergo structural and functional remodeling to meet the cell demand in response to the intracellular and extracellular stimulations, playing an essential role in maintaining normal cellular function. Merging evidence demonstrated that dysregulation of mitochondrial remodeling is a fundamental driving force of complex human diseases, highlighting its crucial pathophysiological roles and therapeutic potential. In this review, we outlined the progress of the molecular basis of mitochondrial structural and functional remodeling and their regulatory network. In particular, we summarized the latest evidence of the fundamental association of impaired mitochondrial remodeling in developing diverse cardiac diseases and the underlying mechanisms. We also explored the therapeutic potential related to mitochondrial remodeling and future research direction. This updated information would improve our knowledge of mitochondrial biology and cardiac diseases’ pathogenesis, which would inspire new potential strategies for treating these diseases by targeting mitochondria remodeling.
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Affiliation(s)
| | | | - Hongyu Qiu
- Correspondence: ; Tel.: +404-413-3371; Fax: +404-413-9566
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5
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Yang MY, Fan Z, Zhang Z, Fan J. MitoQ protects against high glucose-induced brain microvascular endothelial cells injury via the Nrf2/HO-1 pathway. J Pharmacol Sci 2020; 145:105-114. [PMID: 33357768 DOI: 10.1016/j.jphs.2020.10.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/07/2020] [Accepted: 10/23/2020] [Indexed: 12/13/2022] Open
Abstract
Brain microvascular endothelial cells (BMECs) dysfunction is related to the pathogenesis of neurovascular complication of diabetes mellitus that adversely lead to various CNS disorders. Mitoquinone (MitoQ) is a mitochondria targeted antioxidant that exerts multiple protective effects in many oxidative damage-related diseases. In this study, we determined the protective effects of MitoQ on high glucose (HG)-induced BMECs injury and investigated the underlying mechanism. We found that HG significantly reduced the expression of Nrf2 and HO-1, decreased mitochondrial membrane potential, increased intracellular and mitochondrial reactive oxygen species (ROS) generation, induced cytoskeletal damage and apoptosis in BMECs. In addition, Mito tempol, a mitochondrial ROS scavenger, significantly reduced HG-induced mitochondrial ROS production and attenuated cytoskeletal damage and cell apoptosis, suggesting MtROS production was involved in HG-induced BMECs injury. Moreover, we found that MitoQ treatment significantly upregulated the expression of Nrf2 and HO-1 in HG-induced BMECs, which is accompanied by improved mitochondrial membrane potential and decreased MtROS production. Meanwhile, MitoQ treatment also remarkably attenuated HG-induced cytoskeletal damage and cell apoptosis in BMECs. However, inhibitor of Nrf2 with ML385 impaired the protective effects of MitoQ in HG-induced BMECs. In conclusion, our results suggest that MitoQ exerts protective effect on HG-induced BMECs injury via activating Nrf2/HO-1 pathway.
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Affiliation(s)
- Min-Yan Yang
- Department of Internal Medicine, The Fourth People's Hospital of Chengdu, Chengdu, Sichuan, China
| | - Zhen Fan
- Department of Geriatrics, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Zhao Zhang
- Department of Emergency, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Jin Fan
- Department of Neurology, The General Hospital of Western Theater Command, Chendu, Sichuan, China.
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Vilella R, Sgarbi G, Naponelli V, Savi M, Bocchi L, Liuzzi F, Righetti R, Quaini F, Frati C, Bettuzzi S, Solaini G, Stilli D, Rizzi F, Baracca A. Effects of Standardized Green Tea Extract and Its Main Component, EGCG, on Mitochondrial Function and Contractile Performance of Healthy Rat Cardiomyocytes. Nutrients 2020; 12:nu12102949. [PMID: 32993022 PMCID: PMC7600665 DOI: 10.3390/nu12102949] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 12/17/2022] Open
Abstract
We recently showed that the long-term in vivo administration of green tea catechin extract (GTE) resulted in hyperdynamic cardiomyocyte contractility. The present study investigates the mechanisms underlying GTE action in comparison to its major component, epigallocatechin-3-gallate (EGCG), given at the equivalent amount that would be in the entirety of GTE. Twenty-six male Wistar rats were given 40 mL/day of a tap water solution with either standardized GTE or pure EGCG for 4 weeks. Cardiomyocytes were then isolated for the study. Cellular bioenergetics was found to be significantly improved in both GTE- and EGCG-fed rats compared to that in controls as shown by measuring the maximal mitochondrial respiration rate and the cellular ATP level. Notably, the improvement of mitochondrial function was associated with increased levels of oxidative phosphorylation complexes, whereas the cellular mitochondrial mass was unchanged. However, only the GTE supplement improved cardiomyocyte mechanics and intracellular calcium dynamics, by lowering the expression of total phospholamban (PLB), which led to an increase of both the phosphorylated-PLB/PLB and the sarco-endoplasmic reticulum calcium ATPase/PLB ratios. Our findings suggest that GTE might be a valuable adjuvant tool for counteracting the occurrence and/or the progression of cardiomyopathies in which mitochondrial dysfunction and alteration of intracellular calcium dynamics constitute early pathogenic factors.
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Affiliation(s)
- Rocchina Vilella
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, 43124 Parma, Italy; (R.V.); (M.S.); (L.B.); (D.S.)
| | - Gianluca Sgarbi
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, 40126 Bologna, Italy; (G.S.); (F.L.); (G.S.)
| | - Valeria Naponelli
- Department of Medicine and Surgery (DIMEC), University of Parma, 43125 Parma, Italy; (V.N.); (F.Q.); (C.F.); (S.B.)
- National Institute of Biostructure and Biosystems (INBB), 00136 Rome, Italy
- Centre for Molecular and Translational Oncology (COMT), University of Parma, 43124 Parma, Italy
| | - Monia Savi
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, 43124 Parma, Italy; (R.V.); (M.S.); (L.B.); (D.S.)
| | - Leonardo Bocchi
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, 43124 Parma, Italy; (R.V.); (M.S.); (L.B.); (D.S.)
| | - Francesca Liuzzi
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, 40126 Bologna, Italy; (G.S.); (F.L.); (G.S.)
| | - Riccardo Righetti
- CNR Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza” Unit of Bologna, 40136 Bologna, Italy;
| | - Federico Quaini
- Department of Medicine and Surgery (DIMEC), University of Parma, 43125 Parma, Italy; (V.N.); (F.Q.); (C.F.); (S.B.)
| | - Caterina Frati
- Department of Medicine and Surgery (DIMEC), University of Parma, 43125 Parma, Italy; (V.N.); (F.Q.); (C.F.); (S.B.)
| | - Saverio Bettuzzi
- Department of Medicine and Surgery (DIMEC), University of Parma, 43125 Parma, Italy; (V.N.); (F.Q.); (C.F.); (S.B.)
- National Institute of Biostructure and Biosystems (INBB), 00136 Rome, Italy
- Centre for Molecular and Translational Oncology (COMT), University of Parma, 43124 Parma, Italy
| | - Giancarlo Solaini
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, 40126 Bologna, Italy; (G.S.); (F.L.); (G.S.)
| | - Donatella Stilli
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, 43124 Parma, Italy; (R.V.); (M.S.); (L.B.); (D.S.)
| | - Federica Rizzi
- Department of Medicine and Surgery (DIMEC), University of Parma, 43125 Parma, Italy; (V.N.); (F.Q.); (C.F.); (S.B.)
- National Institute of Biostructure and Biosystems (INBB), 00136 Rome, Italy
- Centre for Molecular and Translational Oncology (COMT), University of Parma, 43124 Parma, Italy
- Correspondence: (F.R.); (A.B.); Tel.: +39-0521-033816 (F.R.); +39-051-2091244 (A.B.); Fax: +39-0521-033802 (F.R.); +39-051-2091224 (A.B.)
| | - Alessandra Baracca
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, 40126 Bologna, Italy; (G.S.); (F.L.); (G.S.)
- Correspondence: (F.R.); (A.B.); Tel.: +39-0521-033816 (F.R.); +39-051-2091244 (A.B.); Fax: +39-0521-033802 (F.R.); +39-051-2091224 (A.B.)
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7
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Nicotine induces cardiac toxicity through blocking mitophagic clearance in young adult rat. Life Sci 2020; 257:118084. [PMID: 32663572 DOI: 10.1016/j.lfs.2020.118084] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/27/2020] [Accepted: 07/07/2020] [Indexed: 02/06/2023]
Abstract
Since an outbreak of vaping-related deaths in the US has been reported as a public health crisis, the cardiovascular safety of nicotine nowadays receives increasing attention due to use of tobacco cigarette alternatives, such as electronic cigarettes. However, whether and how nicotine contributes to cardiac detrimental effects are in great controversy, especially less understood in young adult population. We report that chronic nicotine exposure, a major component of Electronic cigarettes, resulted in directly inhibited cardiomyocytes viability, increased cardiac fibrosis, and markedly suppressed cardiac function compared with sham. Gene array combined with bioinformatics analysis identified cardiac apoptosis and mitophagy were the key signals responsible for nicotine induced cardiac detrimental effect. Mechanistically, nicotine exposure markedly increased cleaved Caspase 3 and cleaved Caspase 9 indicating the involvement of intrinsic apoptotic pathway (mitochondrial cell death pathway). Meanwhile, nicotine-induced ROS outbreak promoted lysomal alkalization, furthermore blocked mitophagic degradation, thereby disrupted mitophagic flux promoted mitochondrial cell death cascade. Taken together, these findings indicate that nicotine confers cardiotoxicity via ROS-induced mitophagic flux blockage and provide the first demonstration of a causative link between nicotine and cardiac toxicity in young adult rat which may suggest nicotine induces cardiomyocytes impairment leading to cardiotoxicity in young adult population.
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