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Taylor AD, Hathaway QA, Kunovac A, Pinti MV, Newman MS, Cook CC, Cramer ER, Starcovic SA, Winters MT, Westemeier-Rice ES, Fink GK, Durr AJ, Rizwan S, Shepherd DL, Robart AR, Martinez I, Hollander JM. Mitochondrial sequencing identifies long noncoding RNA features that promote binding to PNPase. Am J Physiol Cell Physiol 2024; 327:C221-C236. [PMID: 38826135 DOI: 10.1152/ajpcell.00648.2023] [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: 11/27/2023] [Revised: 05/24/2024] [Accepted: 05/24/2024] [Indexed: 06/04/2024]
Abstract
Extranuclear localization of long noncoding RNAs (lncRNAs) is poorly understood. Based on machine learning evaluations, we propose a lncRNA-mitochondrial interaction pathway where polynucleotide phosphorylase (PNPase), through domains that provide specificity for primary sequence and secondary structure, binds nuclear-encoded lncRNAs to facilitate mitochondrial import. Using FVB/NJ mouse and human cardiac tissues, RNA from isolated subcellular compartments (cytoplasmic and mitochondrial) and cross-linked immunoprecipitate (CLIP) with PNPase within the mitochondrion were sequenced on the Illumina HiSeq and MiSeq, respectively. lncRNA sequence and structure were evaluated through supervised [classification and regression trees (CART) and support vector machines (SVM)] machine learning algorithms. In HL-1 cells, quantitative PCR of PNPase CLIP knockout mutants (KH and S1) was performed. In vitro fluorescence assays assessed PNPase RNA binding capacity and verified with PNPase CLIP. One hundred twelve (mouse) and 1,548 (human) lncRNAs were identified in the mitochondrion with Malat1 being the most abundant. Most noncoding RNAs binding PNPase were lncRNAs, including Malat1. lncRNA fragments bound to PNPase compared against randomly generated sequences of similar length showed stratification with SVM and CART algorithms. The lncRNAs bound to PNPase were used to create a criterion for binding, with experimental validation revealing increased binding affinity of RNA designed to bind PNPase compared to control RNA. The binding of lncRNAs to PNPase was decreased through the knockout of RNA binding domains KH and S1. In conclusion, sequence and secondary structural features identified by machine learning enhance the likelihood of nuclear-encoded lncRNAs binding to PNPase and undergoing import into the mitochondrion.NEW & NOTEWORTHY Long noncoding RNAs (lncRNAs) are relatively novel RNAs with increasingly prominent roles in regulating genetic expression, mainly in the nucleus but more recently in regions such as the mitochondrion. This study explores how lncRNAs interact with polynucleotide phosphorylase (PNPase), a protein that regulates RNA import into the mitochondrion. Machine learning identified several RNA structural features that improved lncRNA binding to PNPase, which may be useful in targeting RNA therapeutics to the mitochondrion.
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Affiliation(s)
- Andrew D Taylor
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Quincy A Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Heart and Vascular Institute, West Virginia University, Morgantown, West Virginia, United States
- Department of Medical Education, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Mark V Pinti
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- West Virginia University School of Pharmacy, Morgantown, West Virginia, United States
| | - Mackenzie S Newman
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Chris C Cook
- Cardiovascular and Thoracic Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Evan R Cramer
- Department of Biochemistry, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Sarah A Starcovic
- Department of Biochemistry, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Michael T Winters
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University Cancer Institute, School of Medicine, Morgantown, West Virginia, United States
| | - Emily S Westemeier-Rice
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University Cancer Institute, School of Medicine, Morgantown, West Virginia, United States
| | - Garrett K Fink
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Andrya J Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Saira Rizwan
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Danielle L Shepherd
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Aaron R Robart
- Department of Biochemistry, West Virginia University School of Medicine, Morgantown, West Virginia, United States
| | - Ivan Martinez
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University Cancer Institute, School of Medicine, Morgantown, West Virginia, United States
| | - John M Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, West Virginia, United States
- Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, West Virginia, United States
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Kostina A, Lewis-Israeli YR, Abdelhamid M, Gabalski MA, Kiselev A, Volmert BD, Lankerd H, Huang AR, Wasserman AH, Lydic T, Chan C, Park S, Olomu I, Aguirre A. ER stress and lipid imbalance drive diabetic embryonic cardiomyopathy in an organoid model of human heart development. Stem Cell Reports 2024; 19:317-330. [PMID: 38335962 PMCID: PMC10937107 DOI: 10.1016/j.stemcr.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/12/2024] Open
Abstract
Congenital heart defects are the most prevalent human birth defects, and their incidence is exacerbated by maternal health conditions, such as diabetes during the first trimester (pregestational diabetes). Our understanding of the pathology of these disorders is hindered by a lack of human models and the inaccessibility of embryonic tissue. Using an advanced human heart organoid system, we simulated embryonic heart development under pregestational diabetes-like conditions. These organoids developed pathophysiological features observed in mouse and human studies before, including ROS-mediated stress and cardiomyocyte hypertrophy. scRNA-seq revealed cardiac cell-type-specific dysfunction affecting epicardial and cardiomyocyte populations and alterations in the endoplasmic reticulum and very-long-chain fatty acid lipid metabolism. Imaging and lipidomics confirmed these findings and showed that dyslipidemia was linked to fatty acid desaturase 2 mRNA decay dependent on IRE1-RIDD signaling. Targeting IRE1 or restoring lipid levels partially reversed the effects of pregestational diabetes, offering potential preventive and therapeutic strategies in humans.
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Affiliation(s)
- Aleksandra Kostina
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Yonatan R Lewis-Israeli
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Mishref Abdelhamid
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Division of Neonatology, Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, East Lansing, MI, USA
| | - Mitchell A Gabalski
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Artem Kiselev
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Pharmacology and Toxicology, College of Human Medicine, Michigan State University, MI, USA; Division of Dermatology, Department of Medicine, College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
| | - Brett D Volmert
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Haley Lankerd
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Amanda R Huang
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Aaron H Wasserman
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA
| | - Todd Lydic
- Department of Physiology, Michigan State University, MI, USA
| | - Christina Chan
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA; Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, USA; Division of Biomedical Devices, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
| | - Sangbum Park
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Pharmacology and Toxicology, College of Human Medicine, Michigan State University, MI, USA; Division of Dermatology, Department of Medicine, College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
| | - Isoken Olomu
- Division of Neonatology, Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, East Lansing, MI, USA
| | - Aitor Aguirre
- Division of Developmental and Stem Cell Biology, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA; Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, USA.
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Lou X, Zhang Y, Guo J, Gao L, Ding Y, Zhuo X, Lei Q, Bian J, Lei R, Gong W, Zhang X, Jiao Q. What is the impact of ferroptosis on diabetic cardiomyopathy: a systematic review. Heart Fail Rev 2024; 29:1-11. [PMID: 37555989 DOI: 10.1007/s10741-023-10336-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/17/2023] [Indexed: 08/10/2023]
Abstract
Iron overload increases the production of harmful reactive oxygen species in the Fenton reaction, which causes oxidative stress in the body and lipid peroxidation in the cell membrane, and eventually leads to ferroptosis. Diabetes is associated with increased intracellular oxidative stress, inflammation, autophagy, microRNA alterations, and advanced glycation end products (AGEs), which cause cardiac remodeling and cardiac diastolic contractile dysfunction, leading to the development of diabetic cardiomyopathy (DCM). While these factors are also closely associated with ferroptosis, more and more studies have shown that iron-mediated ferroptosis is an important causative factor in DCM. In order to gain fresh insights into the functions of ferroptosis in DCM, this review methodically summarizes the traits and mechanisms connected with ferroptosis and DCM.
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Affiliation(s)
- Xiaokun Lou
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Yuanyuan Zhang
- Department of Cardiovascular Ultrasonic Center, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Junfeng Guo
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Lina Gao
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Yingying Ding
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Xinyu Zhuo
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Qingqing Lei
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Jing Bian
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Rumei Lei
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China
| | - Wenyan Gong
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China.
- Hangzhou Institute of Cardiovascular Disease, Hangzhou, 310000, China.
| | - Xingwei Zhang
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China.
- Hangzhou Institute of Cardiovascular Disease, Hangzhou, 310000, China.
| | - Qibin Jiao
- Department of Clinical Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Wenzhou Road, Gongshu District, Hangzhou, 310000, Zhejiang Province, China.
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Cai J, Pan J. Beta vulgaris-derived exosome-like nanovesicles alleviate chronic doxorubicin-induced cardiotoxicity by inhibiting ferroptosis. J Biochem Mol Toxicol 2024; 38:e23540. [PMID: 37728183 DOI: 10.1002/jbt.23540] [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: 11/19/2022] [Revised: 08/24/2023] [Accepted: 09/01/2023] [Indexed: 09/21/2023]
Abstract
Dose-dependent heart failure is a major complication of the clinical use of doxorubicin (Dox), one of the most potent chemotherapeutic agents. Effective adjuvant therapy is required to prevent Dox-induced cardiotoxicity. Currently, plant-derived exosome-like nanovesicle (PELNV) has revealed their salubrious antioxidant and immunological regulating actions in various disease models. In this study, we isolated, purified and characterized Beta vulgaris-derived exosome-like nanovesicle (BELNV). Dox or normal saline was given to HL-1 cells (3 μM) and 8-week C57BL/6N mice (5 mg/kg bodyweight per week for 4 weeks) to establish the in vitro and in vivo model of Dox-induced cardiotoxicity. Administration of BELNV significantly alleviated chronic Dox-induced cardiotoxicity in terms of echocardiographic and histological results. A reduced malondialdehyde (MDA), increased ratio of glutathione (GSH) to oxidized glutathione (GSSG) and levels of system xc- and glutathione peroxidase 4 were observed, indicating that DOX-stimulated ferroptosis was reversed by BELNV. Besides, the safety of BELNV was also validated since no liver, spleen, and kidney toxicity induced by BELNV was observed. These findings provide evidence that BELNV may act as a novel therapeutic biomaterial for patients undergoing adverse effects of Dox, at least partly mediated by inhibiting Dox-induced ferroptosis.
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Affiliation(s)
- Jiejie Cai
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jingye Pan
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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5
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Soares NP, Magalhaes GC, Mayrink PH, Verano-Braga T. Omics to Unveil Diabetes Mellitus Pathogenesis and Biomarkers: Focus on Proteomics, Lipidomics, and Metabolomics. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1443:211-220. [PMID: 38409423 DOI: 10.1007/978-3-031-50624-6_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder characterized by elevated blood sugar levels, resulting from either body's inability to produce or effectively utilize insulin. There are several types of DM, but the most common are type 1 diabetes (T1D), type 2 diabetes (T2D), and gestational diabetes mellitus (GDM). DM is a complex disease and a global health concern, and the current clinical markers, such as fasting glucose, are helpful in the diagnosis of DM, but are not specific and sensitive, especially when measured on the beginning of the pathogenesis. Therefore, there is a pressing need to discover new early biomarkers that can provide an early diagnosis. Omics is an important field for the discovery of potential new biomarkers, especially proteomics, metabolomics, and lipidomics, where techniques such as liquid chromatography, mass spectrometry, and nuclear magnetic resonance are utilized to identify novel DM biomarkers and their pathways. In this review, we report papers that applied omics in the context of DM to identify new markers and their relationship with this disease, with the aim of elucidating new diagnostic techniques for the main types of DM.
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Affiliation(s)
- Nícia Pedreira Soares
- National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Proteomics Group (NPF), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Gabriela Castro Magalhaes
- National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Proteomics Group (NPF), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Pedro Henrique Mayrink
- National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Proteomics Group (NPF), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Thiago Verano-Braga
- National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil.
- Proteomics Group (NPF), Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil.
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6
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Kunovac A, Hathaway QA, Thapa D, Durr AJ, Taylor AD, Rizwan S, Sharif D, Valentine SJ, Hollander JM. N 6-methyladenosine (M 6A) in fetal offspring modifies mitochondrial gene expression following gestational nano-TiO 2 inhalation exposure. Nanotoxicology 2023; 17:651-668. [PMID: 38180356 PMCID: PMC10988778 DOI: 10.1080/17435390.2023.2293144] [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: 07/26/2023] [Accepted: 12/06/2023] [Indexed: 01/06/2024]
Abstract
N6-methyladenosine (m6A) is the most prominent epitranscriptomic modification to RNA in eukaryotes, but it's role in adaptive changes within the gestational environment are poorly understood. We propose that gestational exposure to nano titanium dioxide (TiO2) contributes to cardiac m6A methylation in fetal offspring and influences mitochondrial gene expression. 10-week-old pregnant female FVB/NJ wild-type mice underwent 6 nonconsecutive days of whole-body inhalation exposure beginning on gestational day (GD) 5. Mice were exposed to filtered room air or nano-TiO2 with a target aerosol mass concentration of 12 mg/m3. At GD 15 mice were humanely killed and cardiac RNA and mitochondrial proteins extracted. Immunoprecipitation with m6A antibodies was performed followed by sequencing of immunoprecipitant (m6A) and input (mRNA) on the Illumina NextSeq 2000. Protein extraction, preparation, and LC-MS/MS were used for mitochondrial protein quantification. There were no differences in maternal or fetal pup weights, number of pups, or pup heart weights between exposure and control groups. Transcriptomic sequencing revealed 3648 differentially expressed mRNA in nano-TiO2 exposed mice (Padj ≤ 0.05). Transcripts involved in mitochondrial bioenergetics were significantly downregulated (83 of 85 genes). 921 transcripts revealed significant m6A methylation sites (Padj ≤ 0.10). 311 of the 921 mRNA were identified to have both 1) significantly altered expression and 2) differentially methylated sites. Mitochondrial proteomics revealed decreased expression of ATP Synthase subunits in the exposed group (P ≤ 0.05). The lack of m6A modifications to mitochondrial transcripts suggests a mechanism for decreased transcript stability and reduced protein expression due to gestational nano-TiO2 inhalation exposure.
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Affiliation(s)
- Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Quincy A. Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Department of Medical Education, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Dharendra Thapa
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Andrya J. Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Andrew D. Taylor
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Saira Rizwan
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Daud Sharif
- Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | | | - John M. Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
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7
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Ryaboshapkina M, Ye R, Ye Y, Birnbaum Y. Effects of Dapagliflozin on Myocardial Gene Expression in BTBR Mice with Type 2 Diabetes. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07517-1. [PMID: 37914900 DOI: 10.1007/s10557-023-07517-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND Dapagliflozin, a sodium-glucose cotransporter 2 (SGLT2) inhibitor, is approved for the treatment of type 2 diabetes, heart failure, and chronic kidney disease. DAPA-HF and DELIVER trial results demonstrate that the cardiovascular protective effect of dapagliflozin extends to non-diabetic patients. Hence, the mechanism-of-action may extend beyond glucose-lowering and is not completely elucidated. We have previously shown that dapagliflozin reduces cardiac hypertrophy, inflammation, fibrosis, and apoptosis and increases ejection fraction in BTBR mice with type 2 diabetes. METHODS We conducted a follow-up RNA-sequencing study on the heart tissue of these animals and performed differential expression and Ingenuity Pathway analysis. Selected markers were confirmed by RT-PCR and Western blot. RESULTS SGLT2 had negligible expression in heart tissue. Dapagliflozin improved cardiac metabolism by decreasing glycolysis and pyruvate utilization enzymes, induced antioxidant enzymes, and decreased expression of hypoxia markers. Expression of inflammation, apoptosis, and hypertrophy pathways was decreased. These observations corresponded to the effects of dapagliflozin in the clinical trials.
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Affiliation(s)
- Maria Ryaboshapkina
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Regina Ye
- University of Texas at Austin, Austin, TX, USA
| | - Yumei Ye
- The Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, USA
| | - Yochai Birnbaum
- The Section of Cardiology, The Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA.
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8
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Sheng SY, Li JM, Hu XY, Wang Y. Regulated cell death pathways in cardiomyopathy. Acta Pharmacol Sin 2023; 44:1521-1535. [PMID: 36914852 PMCID: PMC10374591 DOI: 10.1038/s41401-023-01068-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/20/2023] [Indexed: 03/16/2023] Open
Abstract
Heart disease is a worldwide health menace. Both intractable primary and secondary cardiomyopathies contribute to malignant cardiac dysfunction and mortality. One of the key cellular processes associated with cardiomyopathy is cardiomyocyte death. Cardiomyocytes are terminally differentiated cells with very limited regenerative capacity. Various insults can lead to irreversible damage of cardiomyocytes, contributing to progression of cardiac dysfunction. Accumulating evidence indicates that majority of cardiomyocyte death is executed by regulating molecular pathways, including apoptosis, ferroptosis, autophagy, pyroptosis, and necroptosis. Importantly, these forms of regulated cell death (RCD) are cardinal features in the pathogenesis of various cardiomyopathies, including dilated cardiomyopathy, diabetic cardiomyopathy, sepsis-induced cardiomyopathy, and drug-induced cardiomyopathy. The relevance between abnormity of RCD with adverse outcome of cardiomyopathy has been unequivocally evident. Therefore, there is an urgent need to uncover the molecular and cellular mechanisms for RCD in order to better understand the pathogenesis of cardiomyopathies. In this review, we summarize the latest progress from studies on RCD pathways in cardiomyocytes in context of the pathogenesis of cardiomyopathies, with particular emphasis on apoptosis, necroptosis, ferroptosis, autophagy, and pyroptosis. We also elaborate the crosstalk among various forms of RCD in pathologically stressed myocardium and the prospects of therapeutic applications targeted to various cell death pathways.
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Affiliation(s)
- Shu-Yuan Sheng
- Department of Cardiology, Zhejiang University School of Medicine, Second Affiliated Hospital, Hangzhou, 310009, China
| | - Jia-Min Li
- Department of Cardiology, Zhejiang University School of Medicine, Second Affiliated Hospital, Hangzhou, 310009, China
| | - Xin-Yang Hu
- Department of Cardiology, Zhejiang University School of Medicine, Second Affiliated Hospital, Hangzhou, 310009, China
| | - Yibin Wang
- Department of Cardiology, Zhejiang University School of Medicine, Second Affiliated Hospital, Hangzhou, 310009, China.
- Signature Program in Cardiovascular and Metabolic Diseases, DukeNUS Medical School and National Heart Center of Singapore, Singapore, Singapore.
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9
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Guo H, Ding Q, Huang Y, Guo Z, Ding F, Zhang H, Zheng Z, Zhang X, Weng S. Multi-omics Analysis Reveals the Crucial Mediators of DJB in the Treatment of Type 2 Diabetes. Obes Surg 2023:10.1007/s11695-023-06551-0. [PMID: 37052783 DOI: 10.1007/s11695-023-06551-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/01/2023] [Accepted: 03/09/2023] [Indexed: 04/14/2023]
Abstract
PURPOSE Duodenal-jejunal bypass (DJB) has a definite hypoglycemic effect; however, the intrinsic mechanisms remain unclear. The purpose of this study was to determine whether DJB may cause changes in the gut microbiota and metabolite of portal venous blood and to explore the effects of DJB on blood glucose metabolism. METHODS T2DM was induced in rats with a high-fat diet and a low dose of streptozotocin, which were randomly divided into two groups: Sham operation and DJB. RESULTS DJB significantly improved several diabetic parameters. 16S rRNA analyses showed that the compositions of the gut microbiota were significantly different between the two groups. The results of metabolomics showed that DJB could significantly regulate the metabolites, among which diaminopimelic acid and isovaleric acid had a significant down-regulation in the DJB group. Transcriptomic analysis showed that DJB can regulate the expression of hepatic genes related to abnormal glucose metabolism, such as Ltc4s, Alox15, Ggt1, Gpat3, and Cyp2c24. Correlation analyses showed that diaminopimelic acid was positively associated with Allobaculum, Serratia, and Turicibacter. There was a significant correlation between diaminopimelic acid and Gpat3, and its Spearman correlation coefficient was the highest among metabolite-DEG pairs (ρ=0.97). DISCUSSIONS These results suggest an important cue of the relation between the diaminopimelic acid, Gpat3, and gut microbiome in the mechanism by which DJB can improve glucose metabolism.
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Affiliation(s)
- Hailing Guo
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Qingzhu Ding
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Yue Huang
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Zhenyun Guo
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Fadian Ding
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Han Zhang
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Zhou Zheng
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Xiang Zhang
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
- National Regional Medical Center, Binhai Campus of the first Affiliated Hospital, Fujian Medical University, Fuzhou, 350200, Fujian, China
| | - Shangeng Weng
- Department of Hepatopancreatobiliary Surgery, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China.
- Fujian Abdominal Surgery Research Institute, The first Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China.
- National Regional Medical Center, Binhai Campus of the first Affiliated Hospital, Fujian Medical University, Fuzhou, 350200, Fujian, China.
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10
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Sun H, Chen D, Xin W, Ren L, LI Q, Han X. Targeting ferroptosis as a promising therapeutic strategy to treat cardiomyopathy. Front Pharmacol 2023; 14:1146651. [PMID: 37138856 PMCID: PMC10150641 DOI: 10.3389/fphar.2023.1146651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 04/05/2023] [Indexed: 05/05/2023] Open
Abstract
Cardiomyopathies are a clinically heterogeneous group of cardiac diseases characterized by heart muscle damage, resulting in myocardium disorders, diminished cardiac function, heart failure, and even sudden cardiac death. The molecular mechanisms underlying the damage to cardiomyocytes remain unclear. Emerging studies have demonstrated that ferroptosis, an iron-dependent non-apoptotic regulated form of cell death characterized by iron dyshomeostasis and lipid peroxidation, contributes to the development of ischemic cardiomyopathy, diabetic cardiomyopathy, doxorubicin-induced cardiomyopathy, and septic cardiomyopathy. Numerous compounds have exerted potential therapeutic effects on cardiomyopathies by inhibiting ferroptosis. In this review, we summarize the core mechanism by which ferroptosis leads to the development of these cardiomyopathies. We emphasize the emerging types of therapeutic compounds that can inhibit ferroptosis and delineate their beneficial effects in treating cardiomyopathies. This review suggests that inhibiting ferroptosis pharmacologically may be a potential therapeutic strategy for cardiomyopathy treatment.
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Affiliation(s)
- Huiyan Sun
- Health Science Center, Chifeng University, Chifeng, China
- Key Laboratory of Human Genetic Diseases in Inner Mongolia, Chifeng, China
| | - Dandan Chen
- Department of Endocrinology, The Affiliated Hospital of Chifeng University, Chifeng, China
| | - Wenjing Xin
- Chifeng Clinical Medical College, Inner Mongolia Minzu University, Tongliao, China
| | - Lixue Ren
- Chifeng Clinical Medical College, Inner Mongolia Minzu University, Tongliao, China
| | - Qiang LI
- Department of Neurology, The Affiliated Hospital of Chifeng University, Chifeng, China
- *Correspondence: Qiang LI, ; Xuchen Han,
| | - Xuchen Han
- Department of Cardiology, The Affiliated Hospital of Chifeng University, Chifeng, China
- *Correspondence: Qiang LI, ; Xuchen Han,
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11
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The Effect of 40-Hz White LED Therapy on Structure-Function of Brain Mitochondrial ATP-Sensitive Ca-Activated Large-Conductance Potassium Channel in Amyloid Beta Toxicity. Neurotox Res 2022; 40:1380-1392. [PMID: 36057039 DOI: 10.1007/s12640-022-00565-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/07/2022] [Accepted: 08/19/2022] [Indexed: 10/14/2022]
Abstract
Photobiomodulation therapy has become the focus of medical research in many areas such as Alzheimer's disease (AD), because of its modulatory effect on cellular processes through light energy absorption via photoreceptors/chromophores located in the mitochondria. However, there are still many questions around the underlying mechanisms. This study was carried out to unravel whether the function-structure of ATP-sensitive mitoBKCa channels, as crucial components for maintenance of mitochondrial homeostasis, can be altered subsequent to light therapy in AD. Induction of Aβ neurotoxicity in male Wistar rats was done by intracerebroventricular injection of Aβ1-42. After a week, light-treated rats were exposed to 40-Hz white light LEDs, 15 min for 7 days. Electrophysiological properties of mitoBKCa channel were investigated using a channel incorporated into the bilayer lipid membrane, and mitoBKCa-β2 subunit expression was determined using western blot analysis in Aβ-induced toxicity and light-treated rats. Our results describe that conductance and open probability (Po) of mitoBKCa channel decreased significantly and was accompanied by a Po curve rightward shift in mitochondrial preparation in Aβ-induced toxicity rats. We also showed a significant reduction in expression of mitoBKCa-β2 subunit, which is partly responsible for a leftward shift in BKCa Po curve in low calcium status. Interestingly, we provided evidence of a significant improvement in channel conductance and Po after light therapy. We also found that light therapy improved mitoBKCa-β2 subunit expression, increasing it close to saline group. The current study explains a light therapy improvement in brain mitoBKCa channel function in the Aβ-induced neurotoxicity rat model, an effect that can be linked to increased expression of β2 subunit.
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12
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Zhang Y, Wu Q, Liu J, Zhang Z, Ma X, Zhang Y, Zhu J, Thring RW, Wu M, Gao Y, Tong H. Sulforaphane alleviates high fat diet-induced insulin resistance via AMPK/Nrf2/GPx4 axis. Biomed Pharmacother 2022; 152:113273. [PMID: 35709656 DOI: 10.1016/j.biopha.2022.113273] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/31/2022] [Accepted: 06/08/2022] [Indexed: 02/07/2023] Open
Abstract
Insulin resistance is a characteristic feature of type 2 diabetes. Sulforaphane (SFN) is a natural antioxidant extracted from the cruciferous vegetables. Recent study reported that SFN exhibits excellent anti-diabetic effects, however, the underlying mechanism is still unclear. This study aimed to investigate the therapeutic effects of SFN on a high-fat diet (HFD)-induced insulin resistance and potential mechanism. SFN was found to effectively reduce body weight, fasting blood glucose and hyperlipidemia, and improve liver function in HFD-fed mice. Furthermore, SFN effectively increased glucose uptake and improved insulin signaling in palmitic acid (PA)-induced HepG2 cells. SFN also led to increased expression of antioxidant genes downstream of Nrf2 and decreased accumulation of lipid peroxides MDA and 4-HNE, both in vivo and in vitro. Further studies revealed that SFN significantly reduced glutathione peroxidase 4 (GPx4) inactivation-mediated oxidative stress by activating the AMPK and Nrf2 signaling pathways. In PA-induced HepG2 cells and flies, the alleviation of insulin resistance by SFN was diminished by GPx4 inhibitor. Taken together, SFN ameliorated HFD-induced insulin resistance by activating the AMPK-Nrf2-GPx4 pathway, providing new insights into SFN as a therapeutic compound for the alleviation of insulin resistance.
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Affiliation(s)
- Ya Zhang
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - Qifang Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Jian Liu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Zhongshan Zhang
- Zhejiang Province Key Laboratory of Vector Biology and Pathogen Control, Huzhou University, Huzhou Cent Hosp, Huzhou 313000, China
| | - Xiaojing Ma
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yaoyue Zhang
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Jiawen Zhu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Ronald W Thring
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Mingjiang Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Yitian Gao
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
| | - Haibin Tong
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
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Li D, Pi W, Sun Z, Liu X, Jiang J. Ferroptosis and its role in cardiomyopathy. Biomed Pharmacother 2022; 153:113279. [PMID: 35738177 DOI: 10.1016/j.biopha.2022.113279] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 12/09/2022] Open
Abstract
Heart disease is the leading cause of death worldwide. Cardiomyopathy is a disease characterized by the heart muscle damage, resulting heart in a structurally and functionally change, as well as heart failure and sudden cardiac death. The key pathogenic factor of cardiomyopathy is the loss of cardiomyocytes, but the related molecular mechanisms remain unclear. Ferroptosis is a newly discovered regulated form of cell death, characterized by iron accumulation and lipid peroxidation during cell death. Recent studies have shown that ferroptosis plays an important regulatory roles in the occurrence and development of many heart diseases such as myocardial ischemia/reperfusion injury, cardiomyopathy and heart failure. However, the systemic association of ferroptosis and cardiomyopathy remains largely unknown and needs to be elucidated. In this review, we provide an overview of the molecular mechanisms of ferroptosis and its role in individual cardiomyopathies, highlight that targeting ferroptosis maybe a potential therapeutic strategy for cardiomyopathy therapy in the future.
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Affiliation(s)
- Danlei Li
- Department of Cardiology, Taizhou Hospital of Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
| | - Wenhu Pi
- Key Laboratory of Radiation Oncology of Taizhou, Radiation Oncology Institute of Enze Medical Health Academy, Department of Radiation Oncology, Affiliated Taizhou hospital of Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
| | - Zhenzhu Sun
- Department of Cardiology, Taizhou Hospital of Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
| | - Xiaoman Liu
- Department of Cardiology, Taizhou Hospital of Wenzhou Medical University, Linhai 317000, Zhejiang Province, China
| | - Jianjun Jiang
- Department of Cardiology, Taizhou Hospital of Wenzhou Medical University, Linhai 317000, Zhejiang Province, China.
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14
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Li Z, Zhu Z, Liu Y, Liu Y, Zhao H. Function and regulation of GPX4 in the development and progression of fibrotic disease. J Cell Physiol 2022; 237:2808-2824. [PMID: 35605092 DOI: 10.1002/jcp.30780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 02/06/2023]
Abstract
Fibrosis is a common feature of fibrotic diseases that poses a serious threat to global health due to high morbidity and mortality in developing countries. There exist some chemical compounds and biomolecules associated with the development of fibrosis, including cytokines, hormones, and enzymes. Among them, glutathione peroxidase 4 (GPX4), as a selenoprotein antioxidant enzyme, is widely found in the embryo, testis, brain, liver, heart, and photoreceptor cells. Moreover, it is shown that GPX4 elicits diverse biological functions by suppressing phospholipid hydroperoxide at the expense of decreased glutathione (GSH), including loss of neurons, autophagy, cell repair, inflammation, ferroptosis, apoptosis, and oxidative stress. Interestingly, these processes are intimately related to the occurrence of fibrotic disease. Recently, GPX4 has been reported to exhibit a decline in fibrotic disease and inhibit fibrosis, suggesting that alterations of GPX4 can change the course or dictate the outcome of fibrotic disease. In this review, we summarize the role and underlying mechanisms of GPX4 in fibrosis diseases such as lung fibrosis, liver fibrosis, kidney fibrosis, cardiac fibrosis, and myelofibrosis.
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Affiliation(s)
- Zhaobing Li
- Department of Cardiology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunnan, China
| | - Zigui Zhu
- Department of Intensive Care Units, The Affiliated Nanhua Hospital, Hengyang Medical school, University of South China, Hengyang, Hunnan, China
| | - Yulu Liu
- Department of Intensive Care Units, The Affiliated Nanhua Hospital, Hengyang Medical school, University of South China, Hengyang, Hunnan, China
| | - Yannan Liu
- School of Nursing, Hunan University of Medicine, Huaihua, Hunan, China
| | - Hong Zhao
- School of Nursing, Hengyang Medical School, University of South China, Hengyang, Hunan, China
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15
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Guo Y, Zhang W, Zhou X, Zhao S, Wang J, Guo Y, Liao Y, Lu H, Liu J, Cai Y, Wu J, Shen M. Roles of Ferroptosis in Cardiovascular Diseases. Front Cardiovasc Med 2022; 9:911564. [PMID: 35677693 PMCID: PMC9168067 DOI: 10.3389/fcvm.2022.911564] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 05/02/2022] [Indexed: 12/14/2022] Open
Abstract
Ferroptosis is an iron-dependent regulated cell death characterized by lipid peroxidation and iron overload, which is different from other types of programmed cell death, including apoptosis, necroptosis, autophagy, and pyroptosis. Over the past years, emerging studies have shown a close relation between ferroptosis and various cardiovascular diseases such as atherosclerosis, acute myocardial infarction, ischemia/reperfusion injury, cardiomyopathy, and heart failure. Herein, we will review the contributions of ferroptosis to multiple cardiovascular diseases and the related targets. Further, we discuss the potential ferroptosis-targeting strategies for treating different cardiovascular diseases.
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Affiliation(s)
- Yuting Guo
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Wei Zhang
- Department of Cardiology, Second Medical Center, PLA General Hospital, Beijing, China
| | - Xinger Zhou
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Shihao Zhao
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Jian Wang
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Yi Guo
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Yichao Liao
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Haihui Lu
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Jie Liu
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
| | - Yanbin Cai
- Department of Cardiology and Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jiao Wu
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, China
- Jiao Wu
| | - Mingzhi Shen
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Hainan Hospital of Chinese PLA General Hosptial, Hainan Geriatric Disease Clinical Medical Research Center, Hainan Branch of China Geriatric Disease Clinical Research Center, Hainan, China
- *Correspondence: Mingzhi Shen
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16
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Berdaweel IA, Hart AA, Jatis AJ, Karlan N, Akhter SA, Gaine ME, Smith RM, Anderson EJ. A Genotype-Phenotype Analysis of Glutathione Peroxidase 4 in Human Atrial Myocardium and Its Association with Postoperative Atrial Fibrillation. Antioxidants (Basel) 2022; 11:antiox11040721. [PMID: 35453406 PMCID: PMC9026099 DOI: 10.3390/antiox11040721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 02/01/2023] Open
Abstract
Heterogeneity in the incidence of postoperative atrial fibrillation (POAF) following heart surgery implies that underlying genetic and/or physiological factors impart a higher risk of this complication to certain patients. Glutathione peroxidase-4 (GPx4) is a vital selenoenzyme responsible for neutralizing lipid peroxides, mediators of oxidative stress known to contribute to postoperative arrhythmogenesis. Here, we sought to determine whether GPX4 single nucleotide variants are associated with POAF, and whether any of these variants are linked with altered GPX4 enzyme content or activity in myocardial tissue. Sequencing analysis was performed across the GPX4 coding region within chromosome 19 from a cohort of patients (N = 189) undergoing elective coronary artery bypass graft (−/+ valve) surgery. GPx4 enzyme content and activity were also analyzed in matching samples of atrial myocardium from these patients. Incidence of POAF was 25% in this cohort. Five GPX4 variants were associated with POAF risk (permutated p ≤ 0.05), and eight variants associated with altered myocardial GPx4 content and activity (p < 0.05). One of these variants (rs713041) is a well-known modifier of cardiovascular disease risk. Collectively, these findings suggest GPX4 variants are potential risk modifiers and/or predictors of POAF. Moreover, they illustrate a genotype−phenotype link with this selenoenzyme, which will inform future mechanistic studies.
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Affiliation(s)
- Islam A. Berdaweel
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Alexander A. Hart
- Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA;
| | - Andrew J. Jatis
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Nathan Karlan
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Shahab A. Akhter
- Department of Cardiovascular Sciences, Brody School of Medicine, East Carolina Heart Institute, Greenville, NC 28592, USA;
| | - Marie E. Gaine
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Ryan M. Smith
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Ethan J. Anderson
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242, USA
- Correspondence: ; Tel.: +1-(319)335-8157
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17
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He J, Li Z, Xia P, Shi A, FuChen X, Zhang J, Yu P. Ferroptosis and Ferritinophagy in Diabetes Complications. Mol Metab 2022; 60:101470. [PMID: 35304332 PMCID: PMC8980341 DOI: 10.1016/j.molmet.2022.101470] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/26/2022] [Accepted: 03/03/2022] [Indexed: 11/27/2022] Open
Abstract
With long-term metabolic malfunction, diabetes can cause more serious damage to the whole body tissue and organs, resulting in a variety of complications. Therefore, it is particularly important to further explore the pathogenesis of diabetes complications and develop drugs for prevention and treatment. In recent years, ferroptosis has been recognized as a new regulatory mode of cell death different from apoptosis and necrosis, which involves the regulation of nuclear receptor coactivator 4 (NCOA4)-mediated ferritinophagy. Evidence shows that ferroptosis and ferritinophagy provide a significant role in the occurrence and development of diabetes complications. This article systematically reviews the current understanding of ferroptosis and ferritinophagy, focusing on their potential mechanisms, connection, and regulation. We discuss their involvement in diabetes complications and consider emerging therapeutic opportunities and the associated challenges with future prospects.
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Affiliation(s)
- Jiahui He
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China
| | - Zhangwang Li
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China
| | - Panpan Xia
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China; Department of Metabolism and Endocrinology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China
| | - Ao Shi
- School of Medicine, St. George University of London, London, UK; School of Medicine, University of Nicosia, Nicosia, Cyprus
| | - Xinxi FuChen
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China; Department of Metabolism and Endocrinology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China
| | - Jing Zhang
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China; Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China.
| | - Peng Yu
- The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China; Department of Metabolism and Endocrinology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang 330006, China.
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18
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Li X, Jiang B, Zou Y, Zhang J, Fu YY, Zhai XY. Roxadustat (FG-4592) Facilitates Recovery From Renal Damage by Ameliorating Mitochondrial Dysfunction Induced by Folic Acid. Front Pharmacol 2022; 12:788977. [PMID: 35280255 PMCID: PMC8915431 DOI: 10.3389/fphar.2021.788977] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/14/2021] [Indexed: 01/28/2023] Open
Abstract
Incomplete recovery from acute kidney injury induced by folic acid is a major risk factor for progression to chronic kidney disease. Mitochondrial dysfunction has been considered a crucial contributor to maladaptive repair in acute kidney injury. Treatment with FG-4592, an inhibitor of hypoxia inducible factor prolyl-hydroxylase, is emerging as a new approach to attenuate renal damage; however, the underlying mechanism has not been fully elucidated. The current research demonstrated the protective effect of FG-4592 against renal dysfunction and histopathological damage on the 7th day after FA administration. FG-4592 accelerated tubular repair by promoting tubular cell regeneration, as indicated by increased proliferation of cell nuclear antigen-positive tubular cells, and facilitated structural integrity, as reflected by up-regulation of the epithelial inter-cellular tight junction molecule occludin-1 and the adherens junction molecule E-cadherin. Furthermore, FG-4592 ameliorated tubular functional recovery by restoring the function-related proteins aquaporin1, aquaporin2, and sodium chloride cotransporter. Specifically, FG-4592 pretreatment inhibited hypoxia inducible factor-1α activation on the 7th day after folic acid injection, which ameliorated ultrastructural abnormalities, promoted ATP production, and attenuated excessive reactive oxygen species production both in renal tissue and mitochondria. This was mainly mediated by balancing of mitochondrial dynamics, as indicated by down-regulation of mitochondrial fission 1 and dynamin-related protein 1 as well as up-regulation of mitofusin 1 and optic atrophy 1. Moreover, FG-4592 pretreatment attenuated renal tubular epithelial cell death, kidney inflammation, and subsequent interstitial fibrosis. In vitro, TNF-α-induced HK-2 cells injury could be ameliorated by FG-4592 pretreatment. In summary, our findings support the protective effect of FG-4592 against folic acid-induced mitochondrial dysfunction; therefore, FG-4592 treatment can be used as a useful strategy to facilitate tubular repair and mitigate acute kidney injury progression.
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Affiliation(s)
- Xue Li
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, China
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Bo Jiang
- Department of Vascular Surgery, First Hospital of China Medical University, Shenyang, China
| | - Yu Zou
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, China
| | - Jie Zhang
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, China
| | - Yuan-Yuan Fu
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, China
| | - Xiao-Yue Zhai
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, China
- Institute of Nephropathology, China Medical University, Shenyang, China
- *Correspondence: Xiao-Yue Zhai,
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19
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What Role do Mitochondria have in Diastolic Dysfunction? Implications for Diabetic Cardiomyopathy and Heart Failure with Preserved Ejection Function (HFpEF). J Cardiovasc Pharmacol 2022; 79:399-406. [DOI: 10.1097/fjc.0000000000001228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/08/2022] [Indexed: 11/26/2022]
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20
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Nazari M, Vajed-Samiei T, Torabi N, Fahanik-Babaei J, Saghiri R, Khodagholi F, Eliassi A. The 40-Hz White Light-Emitting Diode (LED) Improves the Structure-Function of the Brain Mitochondrial KATP Channel and Respiratory Chain Activities in Amyloid Beta Toxicity. Mol Neurobiol 2022; 59:2424-2440. [PMID: 35083663 DOI: 10.1007/s12035-021-02681-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 12/04/2021] [Indexed: 11/29/2022]
Abstract
It has been described that using noninvasive exposure to 40-Hz white light LED reduces amyloid-beta, a peptide thought to initiate neurotoxic events in Alzheimer's disease (AD). However, the mechanisms remain to be identified. Since AD impairs mitochondrial potassium channels and respiratory chain activity, the objectives of the current study were to determine the effect of 40-Hz white light LED on structure-function of mitoKATP channel and brain mitochondrial respiratory chain activity, production of reactive oxygen species (ROS), and ΔΨm in AD. Single mitoKATP channel was considered using a channel incorporated into the bilayer lipid membrane and expression of mitoKATP-Kir6.1 subunit as a pore-forming subunit of the channel was determined using a western blot analysis in Aβ1-42 toxicity and light-treated rats. Our results indicated a severe decrease in mito-KATP channel permeation and Kir6.1 subunit expression coming from the Aβ1-42-induced neurotoxicity. Furthermore, we found that Aβ1-42-induced neurotoxicity decreased activities of complexes I and IV and increased ROS production and ΔΨm. Surprisingly, light therapy increased channel permeation and mitoKATP-Kir6.1 subunit expression. Noninvasive 40-Hz white light LED treatment also increased activities of complexes I and IV and decreased ROS production and ΔΨm up to ~ 70%. Here, we report that brain mito-KATP channel and respiratory chain are, at least in part, novel targets of 40-Hz white light LED therapy in AD.
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Affiliation(s)
- Maryam Nazari
- Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Physiology, Medical School, Shahid Beheshti University of Medical Sciences, 1985717443, Evin, Tehran, Iran
| | - Taha Vajed-Samiei
- School of Electrical and Computer Engineering, Tehran University, Tehran, Iran
| | - Nihad Torabi
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Javad Fahanik-Babaei
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Saghiri
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Evin, Tehran, Iran
| | - Afsaneh Eliassi
- Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. .,Department of Physiology, Medical School, Shahid Beheshti University of Medical Sciences, 1985717443, Evin, Tehran, Iran.
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21
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Hathaway QA, Majumder N, Goldsmith WT, Kunovac A, Pinti MV, Harkema JR, Castranova V, Hollander JM, Hussain S. Transcriptomics of single dose and repeated carbon black and ozone inhalation co-exposure highlight progressive pulmonary mitochondrial dysfunction. Part Fibre Toxicol 2021; 18:44. [PMID: 34911549 PMCID: PMC8672524 DOI: 10.1186/s12989-021-00437-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 11/26/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Air pollution is a complex mixture of particles and gases, yet current regulations are based on single toxicant levels failing to consider potential interactive outcomes of co-exposures. We examined transcriptomic changes after inhalation co-exposure to a particulate and a gaseous component of air pollution and hypothesized that co-exposure would induce significantly greater impairments to mitochondrial bioenergetics. A whole-body inhalation exposure to ultrafine carbon black (CB), and ozone (O3) was performed, and the impact of single and multiple exposures was studied at relevant deposition levels. C57BL/6 mice were exposed to CB (10 mg/m3) and/or O3 (2 ppm) for 3 h (either a single exposure or four independent exposures). RNA was isolated from lungs and mRNA sequencing performed using the Illumina HiSeq. Lung pathology was evaluated by histology and immunohistochemistry. Electron transport chain (ETC) activities, electron flow, hydrogen peroxide production, and ATP content were assessed. RESULTS Compared to individual exposure groups, co-exposure induced significantly greater neutrophils and protein levels in broncho-alveolar lavage fluid as well as a significant increase in mRNA expression of oxidative stress and inflammation related genes. Similarly, a significant increase in hydrogen peroxide production was observed after co-exposure. After single and four exposures, co-exposure revealed a greater number of differentially expressed genes (2251 and 4072, respectively). Of these genes, 1188 (single exposure) and 2061 (four exposures) were uniquely differentially expressed, with 35 mitochondrial ETC mRNA transcripts significantly impacted after four exposures. Both O3 and co-exposure treatment significantly reduced ETC maximal activity for complexes I (- 39.3% and - 36.2%, respectively) and IV (- 55.1% and - 57.1%, respectively). Only co-exposure reduced ATP Synthase activity (- 35.7%) and total ATP content (30%). Further, the ability for ATP Synthase to function is limited by reduced electron flow (- 25%) and translation of subunits, such as ATP5F1, following co-exposure. CONCLUSIONS CB and O3 co-exposure cause unique transcriptomic changes in the lungs that are characterized by functional deficits to mitochondrial bioenergetics. Alterations to ATP Synthase function and mitochondrial electron flow underly a pathological adaptation to lung injury induced by co-exposure.
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Affiliation(s)
- Quincy A Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Nairrita Majumder
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, 64 Medical Center Drive, PO Box 9229, Morgantown, WV, 26506-9229, USA
| | - William T Goldsmith
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, 64 Medical Center Drive, PO Box 9229, Morgantown, WV, 26506-9229, USA
| | - Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Mark V Pinti
- Mitochondria, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
- West Virginia University School of Pharmacy, Morgantown, WV, USA
| | - Jack R Harkema
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Vince Castranova
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - John M Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
- Mitochondria, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Salik Hussain
- Mitochondria, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, 64 Medical Center Drive, PO Box 9229, Morgantown, WV, 26506-9229, USA.
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22
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Zhao F, Zou MH. Role of the Mitochondrial Protein Import Machinery and Protein Processing in Heart Disease. Front Cardiovasc Med 2021; 8:749756. [PMID: 34651031 PMCID: PMC8505727 DOI: 10.3389/fcvm.2021.749756] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 08/26/2021] [Indexed: 12/12/2022] Open
Abstract
Mitochondria are essential organelles for cellular energy production, metabolic homeostasis, calcium homeostasis, cell proliferation, and apoptosis. About 99% of mammalian mitochondrial proteins are encoded by the nuclear genome, synthesized as precursors in the cytosol, and imported into mitochondria by mitochondrial protein import machinery. Mitochondrial protein import systems function not only as independent units for protein translocation, but also are deeply integrated into a functional network of mitochondrial bioenergetics, protein quality control, mitochondrial dynamics and morphology, and interaction with other organelles. Mitochondrial protein import deficiency is linked to various diseases, including cardiovascular disease. In this review, we describe an emerging class of protein or genetic variations of components of the mitochondrial import machinery involved in heart disease. The major protein import pathways, including the presequence pathway (TIM23 pathway), the carrier pathway (TIM22 pathway), and the mitochondrial intermembrane space import and assembly machinery, related translocases, proteinases, and chaperones, are discussed here. This review highlights the importance of mitochondrial import machinery in heart disease, which deserves considerable attention, and further studies are urgently needed. Ultimately, this knowledge may be critical for the development of therapeutic strategies in heart disease.
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Affiliation(s)
- Fujie Zhao
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, United States
| | - Ming-Hui Zou
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, United States
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23
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Handy DE, Joseph J, Loscalzo J. Selenium, a Micronutrient That Modulates Cardiovascular Health via Redox Enzymology. Nutrients 2021; 13:nu13093238. [PMID: 34579115 PMCID: PMC8471878 DOI: 10.3390/nu13093238] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 11/17/2022] Open
Abstract
Selenium (Se) is a trace nutrient that promotes human health through its incorporation into selenoproteins in the form of the redox-active amino acid selenocysteine (Sec). There are 25 selenoproteins in humans, and many of them play essential roles in the protection against oxidative stress. Selenoproteins, such as glutathione peroxidase and thioredoxin reductase, play an important role in the reduction of hydrogen and lipid hydroperoxides, and regulate the redox status of Cys in proteins. Emerging evidence suggests a role for endoplasmic reticulum selenoproteins, such as selenoproteins K, S, and T, in mediating redox homeostasis, protein modifications, and endoplasmic reticulum stress. Selenoprotein P, which functions as a carrier of Se to tissues, also participates in regulating cellular reactive oxygen species. Cellular reactive oxygen species are essential for regulating cell growth and proliferation, protein folding, and normal mitochondrial function, but their excess causes cell damage and mitochondrial dysfunction, and promotes inflammatory responses. Experimental evidence indicates a role for individual selenoproteins in cardiovascular diseases, primarily by modulating the damaging effects of reactive oxygen species. This review examines the roles that selenoproteins play in regulating vascular and cardiac function in health and disease, highlighting their antioxidant and redox actions in these processes.
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Affiliation(s)
- Diane E. Handy
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA; (J.J.); (J.L.)
- Correspondence: ; Tel.: +1-617-525-4845
| | - Jacob Joseph
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA; (J.J.); (J.L.)
- Department of Medicine, VA Boston Healthcare System, Boston, MA 02115, USA
| | - Joseph Loscalzo
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA; (J.J.); (J.L.)
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24
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Duan JY, Lin X, Xu F, Shan SK, Guo B, Li FXZ, Wang Y, Zheng MH, Xu QS, Lei LM, Ou-Yang WL, Wu YY, Tang KX, Yuan LQ. Ferroptosis and Its Potential Role in Metabolic Diseases: A Curse or Revitalization? Front Cell Dev Biol 2021; 9:701788. [PMID: 34307381 PMCID: PMC8299754 DOI: 10.3389/fcell.2021.701788] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/04/2021] [Indexed: 12/19/2022] Open
Abstract
Ferroptosis is classified as an iron-dependent form of regulated cell death (RCD) attributed to the accumulation of lipid hydroperoxides and redox imbalance. In recent years, accumulating researches have suggested that ferroptosis may play a vital role in the development of diverse metabolic diseases, for example, diabetes and its complications (e.g., diabetic nephropathy, diabetic cardiomyopathy, diabetic myocardial ischemia/reperfusion injury and atherosclerosis [AS]), metabolic bone disease and adrenal injury. However, the specific physiopathological mechanism and precise therapeutic effect is still not clear. In this review, we summarized recent advances about the development of ferroptosis, focused on its potential character as the therapeutic target in metabolic diseases, and put forward our insights on this topic, largely to offer some help to forecast further directions.
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Affiliation(s)
- Jia-Yue Duan
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiao Lin
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Feng Xu
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Su-Kang Shan
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bei Guo
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Fu-Xing-Zi Li
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yi Wang
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ming-Hui Zheng
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiu-Shuang Xu
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Li-Min Lei
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wen-Lu Ou-Yang
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yun-Yun Wu
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ke-Xin Tang
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ling-Qing Yuan
- National Clinical Research Center for Metabolic Disease, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, China
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25
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Li X, Liu S, Qu L, Chen Y, Yuan C, Qin A, Liang J, Huang Q, Jiang M, Zou W. Dioscin and diosgenin: Insights into their potential protective effects in cardiac diseases. JOURNAL OF ETHNOPHARMACOLOGY 2021; 274:114018. [PMID: 33716083 DOI: 10.1016/j.jep.2021.114018] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/07/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND AND ETHNOPHARMACOLOGICAL RELEVANCE Dioscin and diosgenin derived from plants of the genus Dioscoreaceae such as D. nipponica and D. panthaica Prain et Burk. Were utilized as the main active ingredients of traditional herbal medicinal products for coronary heart disease in the former Soviet Union and China since 1960s. A growing number of research showed that dioscin and diosgenin have a wide range of pharmacological activities in heart diseases. AIM OF THE STUDY To summarize the evidence of the effectiveness of dioscin and diosgenin in cardiac diseases, and to provide a basis and reference for future research into their clinical applications and drug development in the field of cardiac disease. METHODS Literatures in this review were searched in PubMed, ScienceDirect, Google Scholar, China National Knowledge Infrastructure (CNKI) and Web of Science. All eligible studies are analyzed and summarized in this review. RESULTS The pharmacological activities and therapeutic potentials of dioscin and diosgenin in cardiac diseases are similar, can effectively improve hypertrophic cardiomyopathy, arrhythmia, myocardial I/R injury and cardiotoxicity caused by doxorubicin. But the bioavailability of dioscin and diosgenin may be too low as a result of poor absorption and slow metabolism, which hinders their development and utilization. CONCLUSION Dioscin and diosgenin need further in-depth experimental research, clinical transformation and structural modification or research of new preparations before they can be expected to be developed into new therapeutic drugs in the field of cardiac disease.
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Affiliation(s)
- Xiaofen Li
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Sili Liu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Liping Qu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Yang Chen
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Chuqiao Yuan
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Anquan Qin
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Jiyi Liang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Qianqian Huang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Miao Jiang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Wenjun Zou
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
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26
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Byrne NJ, Rajasekaran NS, Abel ED, Bugger H. Therapeutic potential of targeting oxidative stress in diabetic cardiomyopathy. Free Radic Biol Med 2021; 169:317-342. [PMID: 33910093 PMCID: PMC8285002 DOI: 10.1016/j.freeradbiomed.2021.03.046] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/24/2021] [Accepted: 03/25/2021] [Indexed: 02/07/2023]
Abstract
Even in the absence of coronary artery disease and hypertension, diabetes mellitus (DM) may increase the risk for heart failure development. This risk evolves from functional and structural alterations induced by diabetes in the heart, a cardiac entity termed diabetic cardiomyopathy (DbCM). Oxidative stress, defined as the imbalance of reactive oxygen species (ROS) has been increasingly proposed to contribute to the development of DbCM. There are several sources of ROS production including the mitochondria, NAD(P)H oxidase, xanthine oxidase, and uncoupled nitric oxide synthase. Overproduction of ROS in DbCM is thought to be counterbalanced by elevated antioxidant defense enzymes such as catalase and superoxide dismutase. Excess ROS in the cardiomyocyte results in further ROS production, mitochondrial DNA damage, lipid peroxidation, post-translational modifications of proteins and ultimately cell death and cardiac dysfunction. Furthermore, ROS modulates transcription factors responsible for expression of antioxidant enzymes. Lastly, evidence exists that several pharmacological agents may convey cardiovascular benefit by antioxidant mechanisms. As such, increasing our understanding of the pathways that lead to increased ROS production and impaired antioxidant defense may enable the development of therapeutic strategies against the progression of DbCM. Herein, we review the current knowledge about causes and consequences of ROS in DbCM, as well as the therapeutic potential and strategies of targeting oxidative stress in the diabetic heart.
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Affiliation(s)
- Nikole J Byrne
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Namakkal S Rajasekaran
- Cardiac Aging & Redox Signaling Laboratory, Molecular and Cellular Pathology, Department of Pathology, Birmingham, AL, USA; Division of Cardiovascular Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA; Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - E Dale Abel
- Fraternal Order of Eagles Diabetes Research Center, Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, USA
| | - Heiko Bugger
- Division of Cardiology, Medical University of Graz, Graz, Austria.
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27
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Ying H, Shen Z, Wang J, Zhou B. Role of iron homeostasis in the heart : Heart failure, cardiomyopathy, and ischemia-reperfusion injury. Herz 2021; 47:141-149. [PMID: 33978777 DOI: 10.1007/s00059-021-05039-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 07/15/2020] [Accepted: 04/09/2021] [Indexed: 02/07/2023]
Abstract
As an essential trace mineral in mammals and the second most abundant metal in the Earth's crust, iron acts as a double-edged sword in humans. Iron plays important beneficial roles in numerous biological processes ranging from deoxyribonucleic acid biosynthesis and protein function to cell cycle progression. However, iron metabolism disruption leads to widespread tissue degeneration and organ dysfunction. An increasing number of studies have focused on iron regulation pathways and have explored the relationship between iron and cardiovascular diseases. Ferroptosis, an iron-dependent form of programmed cell death, was first described in cancer cells and has recently been linked to heart diseases, including cardiac ischemia-reperfusion injury and doxorubicin-induced myocardiopathy. Here, we summarize recent advances in our understanding of iron homeostasis and heart diseases and discuss potential relationships between ferroptosis and cardiac ischemia-reperfusion injury and cardiomyopathy.
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Affiliation(s)
- Hangying Ying
- Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310016, Zhejiang, Hangzhou, China
| | - Zhida Shen
- Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310016, Zhejiang, Hangzhou, China
| | - Jiacheng Wang
- Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310016, Zhejiang, Hangzhou, China
| | - Binquan Zhou
- Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 310016, Zhejiang, Hangzhou, China.
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28
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Kunovac A, Hathaway QA, Pinti MV, Durr AJ, Taylor AD, Goldsmith WT, Garner KL, Nurkiewicz TR, Hollander JM. Enhanced antioxidant capacity prevents epitranscriptomic and cardiac alterations in adult offspring gestationally-exposed to ENM. Nanotoxicology 2021; 15:812-831. [PMID: 33969789 DOI: 10.1080/17435390.2021.1921299] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Maternal engineered nanomaterial (ENM) exposure during gestation has been associated with negative long-term effects on cardiovascular health in progeny. Here, we evaluate an epitranscriptomic mechanism that contributes to these chronic ramifications and whether overexpression of mitochondrial phospholipid hydroperoxide glutathione peroxidase (mPHGPx) can preserve cardiovascular function and bioenergetics in offspring following gestational nano-titanium dioxide (TiO2) inhalation exposure. Wild-type (WT) and mPHGPx (Tg) dams were exposed to nano-TiO2 aerosols with a mass concentration of 12.01 ± 0.50 mg/m3 starting from gestational day (GD) 5 for 360 mins/day for 6 nonconsecutive days over 8 days. Echocardiography was performed in pregnant dams, adult (11-week old) and fetal (GD 14) progeny. Mitochondrial function and global N6-methyladenosine (m6A) content were assessed in adult progeny. MPHGPx enzymatic function was further evaluated in adult progeny and m6A-RNA immunoprecipitation (RIP) was combined with RT-qPCR to evaluate m6A content in the 3'-UTR. Following gestational ENM exposure, global longitudinal strain (GLS) was 32% lower in WT adult offspring of WT dams, with preservation in WT offspring of Tg dams. MPHGPx activity was significantly reduced in WT offspring (29%) of WT ENM-exposed dams, but preserved in the progeny of Tg dams. M6A-RIP-qPCR for the SEC insertion sequence region of mPHGPx revealed hypermethylation in WT offspring from ENM-exposed WT dams, which was thwarted in the presence of the maternal transgene. Our findings implicate that m6A hypermethylation of mPHGPx may be culpable for diminished antioxidant capacity and resultant mitochondrial and cardiac deficits that persist into adulthood following gestational ENM inhalation exposure.
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Affiliation(s)
- Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Quincy A Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Mark V Pinti
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,West Virginia University School of Pharmacy, Morgantown, WV, USA
| | - Andrya J Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Andrew D Taylor
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - William T Goldsmith
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.,Department of Physiology & Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Krista L Garner
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.,Department of Physiology & Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Timothy R Nurkiewicz
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.,Department of Physiology & Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - John M Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
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Torabi N, Noursadeghi E, Shayanfar F, Nazari M, Fahanik-Babaei J, Saghiri R, Khodagholi F, Eliassi A. Intranasal insulin improves the structure-function of the brain mitochondrial ATP-sensitive Ca 2+ activated potassium channel and respiratory chain activities under diabetic conditions. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166075. [PMID: 33444710 DOI: 10.1016/j.bbadis.2021.166075] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/06/2020] [Accepted: 12/30/2020] [Indexed: 11/21/2022]
Abstract
Although it is well established that diabetes impairs mitochondrial respiratory chain activity, little is known of the effects of intranasal insulin (INI) on the mitochondrial respiratory chain and structure-function of mitoBKCa channel in diabetes. We have investigated this mechanism in an STZ-induced early type 2 diabetic model. Single ATP-sensitive mitoBKCa channel activity was considered in diabetic and INI-treated rats using a channel incorporated into the bilayer lipid membrane. Because mitoBKCa channels have been involved in mitochondrial respiratory chain activity, a study was undertaken to investigate whether the NADH, complexes I and IV, mitochondrial ROS production, and ΔΨm are altered in an early diabetic model. In this work, we provide evidence for a significant decrease in channel open probability and conductance in diabetic rats. Evidence has been shown that BKCa channel β2 subunits induce a left shift in the BKCa channel voltage dependent curve in low Ca2+ conditions,; our results indicated a significant decrease in mitoBKCa β2 subunits using Western blot analysis. Importantly, INI treatment improved mitoBKCa channel behaviors and β2 subunits expression up to ~70%. We found that early diabetes decreased activities of complex I and IV and increased NADH, ROS production, and ΔΨm. Surprisingly, INI modified the mitochondrial respiratory chain, ROS production, and ΔΨm up to ~70%. Our results thus demonstrate an INI improvement in respiratory chain activity and ROS production in brain mitochondrial preparations coming from the STZ early diabetic rat model, an effect potentially linked to INI improvement in mitoBKCa channel activity and channel β2 subunit expression.
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Affiliation(s)
- Nihad Torabi
- Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Physiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Noursadeghi
- Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farzad Shayanfar
- Department of Physiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Nazari
- Department of Physiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Javad Fahanik-Babaei
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Saghiri
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Evin, Tehran, Iran
| | - Afsaneh Eliassi
- Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Physiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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30
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Li N, Jiang W, Wang W, Xiong R, Wu X, Geng Q. Ferroptosis and its emerging roles in cardiovascular diseases. Pharmacol Res 2021; 166:105466. [PMID: 33548489 DOI: 10.1016/j.phrs.2021.105466] [Citation(s) in RCA: 129] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/29/2020] [Accepted: 01/22/2021] [Indexed: 12/14/2022]
Abstract
Ferroptosis is a new form of regulated cell death (RCD) driven by iron-dependent lipid peroxidation, which is morphologically and mechanistically distinct from other forms of RCD including apoptosis, autophagic cell death, pyroptosis and necroptosis. Recently, ferroptosis has been found to participate in the development of various cardiovascular diseases (CVDs) including doxorubicin-induced cardiotoxicity, ischemia/reperfusion-induced cardiomyopathy, heart failure, aortic dissection and stroke. Cardiovascular homeostasis is indulged in delicate equilibrium of assorted cell types composing the heart or vessels, and how ferroptosis contributes to the pathophysiological responses in CVD progression is unclear. Herein, we reviewed recent discoveries on the basis of ferroptosis and its involvement in CVD pathogenesis, together with related therapeutic potentials, aiming to provide insights on fundamental mechanisms of ferroptosis and implications in CVDs and associated disorders.
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Affiliation(s)
- Ning Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wenyang Jiang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wei Wang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Rui Xiong
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaojing Wu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China.
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China.
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31
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Can We Prevent Mitochondrial Dysfunction and Diabetic Cardiomyopathy in Type 1 Diabetes Mellitus? Pathophysiology and Treatment Options. Int J Mol Sci 2020; 21:ijms21082852. [PMID: 32325880 PMCID: PMC7215501 DOI: 10.3390/ijms21082852] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/29/2020] [Accepted: 04/17/2020] [Indexed: 12/15/2022] Open
Abstract
Type 1 diabetes mellitus is a disease involving changes to energy metabolism. Chronic hyperglycemia is a major cause of diabetes complications. Hyperglycemia induces mechanisms that generate the excessive production of reactive oxygen species, leading to the development of oxidative stress. Studies with animal models have indicated the involvement of mitochondrial dysfunction in the pathogenesis of diabetic cardiomyopathy. In the current review, we aimed to collect scientific reports linking disorders in mitochondrial functioning with the development of diabetic cardiomyopathy in type 1 diabetes mellitus. We also aimed to present therapeutic approaches counteracting the development of mitochondrial dysfunction and diabetic cardiomyopathy in type 1 diabetes mellitus.
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Mohsin AA, Thompson J, Hu Y, Hollander J, Lesnefsky EJ, Chen Q. Endoplasmic reticulum stress-induced complex I defect: Central role of calcium overload. Arch Biochem Biophys 2020; 683:108299. [PMID: 32061585 DOI: 10.1016/j.abb.2020.108299] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/01/2020] [Accepted: 02/06/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND ER (endoplasmic reticulum) stress leads to decreased complex I activity in cardiac mitochondria. The aim of the current study is to explore the potential mechanisms by which ER stress leads to the complex I defect. ER stress contributes to intracellular calcium overload and oxidative stress that are two key factors to induce mitochondrial dysfunction. Since oxidative stress is often accompanied by intracellular calcium overload during ER stress in vivo, the role of oxidative stress and calcium overload in mitochondrial dysfunction was studied using in vitro models. ER stress results in intracellular calcium overload that favors activation of calcium-dependent calpains. The contribution of mitochondrial calpain activation in ER stress-mediated complex I damage was studied. METHODS Thapsigargin (THAP) was used to induce acute ER stress in H9c2 cells and C57BL/6 mice. Exogenous calcium (25 μM) and H2O2 (100 μM) were used to induce modest calcium overload and oxidative stress in isolated mitochondria. Calpain small subunit 1 (CAPNS1) is essential to maintain calpain 1 and calpain 2 (CPN1/2) activities. Deletion of CAPNS1 eliminates the activities of CPN1/2. Wild type and cardiac-specific CAPNS1 deletion mice were used to explore the role of CPN1/2 activation in calcium-induced mitochondrial damage. RESULTS In isolated mitochondria, exogenous calcium but not H2O2 treatment led to decreased oxidative phosphorylation, supporting that calcium overload contributes a key role in the mitochondrial damage. THAP treatment of H9c2 cells decreased respiration selectively with complex I substrates. THAP treatment activated cytosolic and mitochondrial CPN1/2 in C57BL/6 mice and led to degradation of complex I subunits including NDUFS7. Calcium treatment decreased NDUFS7 content in wild type but not in CAPNS1 knockout mice. CONCLUSION ER stress-mediated activation of mitochondria-localized CPN1/2 contributes to complex I damage by cleaving component subunits.
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Affiliation(s)
- Ahmed A Mohsin
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA, 23298, USA; Radiological Techniques Department, Health and Medical Technology College-Baghdad, Middle Technical University (MTU), Iraq
| | - Jeremy Thompson
- Pauley Heart Center, Division of Cardiology, Department of Medicine, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Ying Hu
- Pauley Heart Center, Division of Cardiology, Department of Medicine, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - John Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, 25606, USA; Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, 25606, USA
| | - Edward J Lesnefsky
- Pauley Heart Center, Division of Cardiology, Department of Medicine, Virginia Commonwealth University, Richmond, VA, 23298, USA; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA, 23298, USA; Medical Service, McGuire Department of Veterans Affairs Medical Center, Richmond, VA, 23249, USA
| | - Qun Chen
- Pauley Heart Center, Division of Cardiology, Department of Medicine, Virginia Commonwealth University, Richmond, VA, 23298, USA.
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L P, D K, J K, Cl H, N L. Integrated approach for data acquisition, visualization and processing of analog polarographic systems for bioenergetics studies. Anal Biochem 2020; 590:113515. [PMID: 31812534 PMCID: PMC6943940 DOI: 10.1016/j.ab.2019.113515] [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: 10/29/2019] [Accepted: 11/25/2019] [Indexed: 11/20/2022]
Abstract
Bioenergetic function is characterized with assays obtained by polarographic systems. Analog systems without data acquisition, visualization, and processing tools are used but require cumbersome operations to derive respiration rate and ADP to oxygen stoichiometry of oxidative phosphorylation (ADP/O ratio). The analog signal of a polarograhic system (YSI-5300) was digitized and a graphical user interface (GUI) was developed in MATLAB to integrate visualization, recording, calibration and processing of bioenergetic data. With the GUI, the signal is continuously visualized during the experiment and respiratory rates and ADP/O ratios can be determined. The integrated system was tested to evaluate bioenergetic function of subpopulations of mitochondria isolated from rat skeletal muscle (n = 10). Signal processing was applied to denoise data recorded at the sampling rate of 1000Hz, and maximize data decimation for computational applications. The error in calculating the bioenergetic outputs using decimated data is negligible when data are denoised. The estimate of respiration rate, ADP/O ratio and RCR obtained with denoised data at sampling rate as low as 5Hz was similar to that obtained with raw data recorded at sampling rate of 1000Hz. In summary, the integrated tools of the GUI overcome the limitations of data processing, accuracy, and utilization of analog polarographic systems.
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Affiliation(s)
- Potter L
- Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA, USA; Biomedical Engineering Institute, Old Dominion University, Norfolk, VA, USA
| | - Krusienski D
- Department of Biomedical Engineering Virginia Commonwealth University, Richmond, VA, USA
| | - Kennedy J
- Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA, USA
| | - Hoppel Cl
- Center for Mitochondrial Disease, School of Medicine, Case Western Reserve University, USA; Department of Pharmacology and School of Medicine, Case Western Reserve University, USA; Department of Medicine, School of Medicine, Case Western Reserve University, USA
| | - Lai N
- Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA, USA; Biomedical Engineering Institute, Old Dominion University, Norfolk, VA, USA; Department of Biomedical Engineering, School of Medicine, Case Western Reserve University, USA; Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Italy.
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Kunovac A, Hathaway QA, Pinti MV, Goldsmith WT, Durr AJ, Fink GK, Nurkiewicz TR, Hollander JM. ROS promote epigenetic remodeling and cardiac dysfunction in offspring following maternal engineered nanomaterial (ENM) exposure. Part Fibre Toxicol 2019; 16:24. [PMID: 31215478 PMCID: PMC6582485 DOI: 10.1186/s12989-019-0310-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 06/06/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Nano-titanium dioxide (nano-TiO2) is amongst the most widely utilized engineered nanomaterials (ENMs). However, little is known regarding the consequences maternal ENM inhalation exposure has on growing progeny during gestation. ENM inhalation exposure has been reported to decrease mitochondrial bioenergetics and cardiac function, though the mechanisms responsible are poorly understood. Reactive oxygen species (ROS) are increased as a result of ENM inhalation exposure, but it is unclear whether they impact fetal reprogramming. The purpose of this study was to determine whether maternal ENM inhalation exposure influences progeny cardiac development and epigenomic remodeling. RESULTS Pregnant FVB dams were exposed to nano-TiO2 aerosols with a mass concentration of 12.09 ± 0.26 mg/m3 starting at gestational day five (GD 5), for 6 h over 6 non-consecutive days. Aerosol size distribution measurements indicated an aerodynamic count median diameter (CMD) of 156 nm with a geometric standard deviation (GSD) of 1.70. Echocardiographic imaging was used to assess cardiac function in maternal, fetal (GD 15), and young adult (11 weeks) animals. Electron transport chain (ETC) complex activities, mitochondrial size, complexity, and respiration were evaluated, along with 5-methylcytosine, Dnmt1 protein expression, and Hif1α activity. Cardiac functional analyses revealed a 43% increase in left ventricular mass and 25% decrease in cardiac output (fetal), with an 18% decrease in fractional shortening (young adult). In fetal pups, hydrogen peroxide (H2O2) levels were significantly increased (~ 10 fold) with a subsequent decrease in expression of the antioxidant enzyme, phospholipid hydroperoxide glutathione peroxidase (GPx4). ETC complex activity IV was decreased by 68 and 46% in fetal and young adult cardiac mitochondria, respectively. DNA methylation was significantly increased in fetal pups following exposure, along with increased Hif1α activity and Dnmt1 protein expression. Mitochondrial ultrastructure, including increased size, was observed at both fetal and young adult stages following maternal exposure. CONCLUSIONS Maternal inhalation exposure to nano-TiO2 results in adverse effects on cardiac function that are associated with increased H2O2 levels and dysregulation of the Hif1α/Dnmt1 regulatory axis in fetal offspring. Our findings suggest a distinct interplay between ROS and epigenetic remodeling that leads to sustained cardiac contractile dysfunction in growing and young adult offspring following maternal ENM inhalation exposure.
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Affiliation(s)
- Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV 26506 USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV USA
| | - Quincy A. Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV 26506 USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV USA
| | - Mark V. Pinti
- West Virginia University School of Pharmacy, Morgantown, WV USA
| | - William T. Goldsmith
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV USA
- Department of Physiology, Pharmacology, Morgantown, WV USA
| | - Andrya J. Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV 26506 USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV USA
| | - Garrett K. Fink
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV 26506 USA
| | - Timothy R. Nurkiewicz
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV USA
- Department of Physiology, Pharmacology, Morgantown, WV USA
| | - John M. Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV 26506 USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV USA
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Hathaway QA, Roth SM, Pinti MV, Sprando DC, Kunovac A, Durr AJ, Cook CC, Fink GK, Cheuvront TB, Grossman JH, Aljahli GA, Taylor AD, Giromini AP, Allen JL, Hollander JM. Machine-learning to stratify diabetic patients using novel cardiac biomarkers and integrative genomics. Cardiovasc Diabetol 2019; 18:78. [PMID: 31185988 PMCID: PMC6560734 DOI: 10.1186/s12933-019-0879-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 05/29/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Diabetes mellitus is a chronic disease that impacts an increasing percentage of people each year. Among its comorbidities, diabetics are two to four times more likely to develop cardiovascular diseases. While HbA1c remains the primary diagnostic for diabetics, its ability to predict long-term, health outcomes across diverse demographics, ethnic groups, and at a personalized level are limited. The purpose of this study was to provide a model for precision medicine through the implementation of machine-learning algorithms using multiple cardiac biomarkers as a means for predicting diabetes mellitus development. METHODS Right atrial appendages from 50 patients, 30 non-diabetic and 20 type 2 diabetic, were procured from the WVU Ruby Memorial Hospital. Machine-learning was applied to physiological, biochemical, and sequencing data for each patient. Supervised learning implementing SHapley Additive exPlanations (SHAP) allowed binary (no diabetes or type 2 diabetes) and multiple classification (no diabetes, prediabetes, and type 2 diabetes) of the patient cohort with and without the inclusion of HbA1c levels. Findings were validated through Logistic Regression (LR), Linear Discriminant Analysis (LDA), Gaussian Naïve Bayes (NB), Support Vector Machine (SVM), and Classification and Regression Tree (CART) models with tenfold cross validation. RESULTS Total nuclear methylation and hydroxymethylation were highly correlated to diabetic status, with nuclear methylation and mitochondrial electron transport chain (ETC) activities achieving superior testing accuracies in the predictive model (~ 84% testing, binary). Mitochondrial DNA SNPs found in the D-Loop region (SNP-73G, -16126C, and -16362C) were highly associated with diabetes mellitus. The CpG island of transcription factor A, mitochondrial (TFAM) revealed CpG24 (chr10:58385262, P = 0.003) and CpG29 (chr10:58385324, P = 0.001) as markers correlating with diabetic progression. When combining the most predictive factors from each set, total nuclear methylation and CpG24 methylation were the best diagnostic measures in both binary and multiple classification sets. CONCLUSIONS Using machine-learning, we were able to identify novel as well as the most relevant biomarkers associated with type 2 diabetes mellitus by integrating physiological, biochemical, and sequencing datasets. Ultimately, this approach may be used as a guideline for future investigations into disease pathogenesis and novel biomarker discovery.
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Affiliation(s)
- Quincy A Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV, 26505, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Skyler M Roth
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26505, USA
| | - Mark V Pinti
- West Virginia University School of Pharmacy, Morgantown, WV, 26505, USA
| | - Daniel C Sprando
- West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV, 26505, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Andrya J Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV, 26505, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Chris C Cook
- Cardiovascular and Thoracic Surgery, West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Garrett K Fink
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV, 26505, USA
| | - Tristen B Cheuvront
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26505, USA
| | - Jasmine H Grossman
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26505, USA
| | - Ghadah A Aljahli
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26505, USA
| | - Andrew D Taylor
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV, 26505, USA
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Andrew P Giromini
- West Virginia University School of Medicine, Morgantown, WV, 26505, USA
| | - Jessica L Allen
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26505, USA
| | - John M Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, PO Box 9227, 1 Medical Center Drive, Morgantown, WV, 26505, USA.
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, 26505, USA.
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Mohsin AA, Chen Q, Quan N, Rousselle T, Maceyka MW, Samidurai A, Thompson J, Hu Y, Li J, Lesnefsky EJ. Mitochondrial Complex I Inhibition by Metformin Limits Reperfusion Injury. J Pharmacol Exp Ther 2019; 369:282-290. [PMID: 30846619 DOI: 10.1124/jpet.118.254300] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 02/26/2019] [Indexed: 12/12/2022] Open
Abstract
Transient, reversible blockade of complex I during early reperfusion after ischemia limits cardiac injury. We studied the cardioprotection of high dose of metformin in cultured cells and mouse hearts via the novel mechanism of acute downregulation of complex I. The effect of high dose of metformin on complex I activity was studied in isolated heart mitochondria and cultured H9c2 cells. Protection with metformin was evaluated in H9c2 cells at reoxygenation and at early reperfusion in isolated perfused mouse hearts and in vivo regional ischemia reperfusion. Acute, high-dose metformin treatment inhibited complex I in ischemia-damaged mitochondria and in H9c2 cells following hypoxia. Accompanying the complex I modulation, high-dose metformin at reoxygenation decreased death in H9c2 cells. Acute treatment with high-dose metformin at the end of ischemia reduced infarct size following ischemia reperfusion in vitro and in vivo, including in the AMP kinase-dead mouse. Metformin treatment during early reperfusion improved mitochondrial calcium retention capacity, indicating decreased permeability transition pore (MPTP) opening. Acute, high-dose metformin therapy decreased cardiac injury through inhibition of complex I accompanied by attenuation of MPTP opening. Moreover, in contrast to chronic metformin treatment, protection by acute, high-dose metformin is independent of AMP-activated protein kinase activation. Thus, a single, high-dose metformin treatment at reperfusion reduces cardiac injury via modulation of complex I.
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Affiliation(s)
- Ahmed A Mohsin
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Qun Chen
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Nanhu Quan
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Thomas Rousselle
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Michael W Maceyka
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Arun Samidurai
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Jeremy Thompson
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Ying Hu
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Ji Li
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
| | - Edward J Lesnefsky
- Department of Biochemistry and Molecular Biology (A.A.M., M.W.M., E.J.L.) and Pauley Heart Center, Division of Cardiology, Department of Internal Medicine (Q.C., A.S., J.T., Y.H., E.J.L.), Virginia Commonwealth University, Richmond, Virginia; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi (N.Q., T.R., J.L.); and Cardiology Section Medical Service, McGuire Veterans Affairs Medical Center, Richmond, Virginia (E.J.L.)
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Hathaway QA, Durr AJ, Shepherd DL, Pinti MV, Brandebura AN, Nichols CE, Kunovac A, Goldsmith WT, Friend SA, Abukabda AB, Fink GK, Nurkiewicz TR, Hollander JM. miRNA-378a as a key regulator of cardiovascular health following engineered nanomaterial inhalation exposure. Nanotoxicology 2019; 13:644-663. [PMID: 30704319 DOI: 10.1080/17435390.2019.1570372] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Nano-titanium dioxide (nano-TiO2), though one of the most utilized and produced engineered nanomaterials (ENMs), diminishes cardiovascular function through dysregulation of metabolism and mitochondrial bioenergetics following inhalation exposure. The molecular mechanisms governing this cardiac dysfunction remain largely unknown. The purpose of this study was to elucidate molecular mediators that connect nano-TiO2 exposure with impaired cardiac function. Specifically, we were interested in the role of microRNA (miRNA) expression in the resulting dysfunction. Not only are miRNA global regulators of gene expression, but also miRNA-based therapeutics provide a realistic treatment modality. Wild type and MiRNA-378a knockout mice were exposed to nano-TiO2 with an aerodynamic diameter of 182 ± 1.70 nm and a mass concentration of 11.09 mg/m3 for 4 h. Cardiac function, utilizing the Vevo 2100 Imaging System, electron transport chain complex activities, and mitochondrial respiration assessed cardiac and mitochondrial function. Immunoblotting and qPCR examined molecular targets of miRNA-378a. MiRNA-378a-3p expression was increased 48 h post inhalation exposure to nano-TiO2. Knockout of miRNA-378a preserved cardiac function following exposure as revealed by preserved E/A ratio and E/SR ratio. In knockout animals, complex I, III, and IV activities (∼2- to 6-fold) and fatty acid respiration (∼5-fold) were significantly increased. MiRNA-378a regulated proteins involved in mitochondrial fusion, transcription, and fatty acid metabolism. MiRNA-378a-3p acts as a negative regulator of mitochondrial metabolic and biogenesis pathways. MiRNA-378a knockout animals provide a protective effect against nano-TiO2 inhalation exposure by altering mitochondrial structure and function. This is the first study to manipulate a miRNA to attenuate the effects of ENM exposure.
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Affiliation(s)
- Quincy A Hathaway
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA.,b Mitochondria, Metabolism & Bioenergetics Working Group , West Virginia University School of Medicine , Morgantown , WV , USA.,c Toxicology Working Group , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Andrya J Durr
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA.,b Mitochondria, Metabolism & Bioenergetics Working Group , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Danielle L Shepherd
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA.,b Mitochondria, Metabolism & Bioenergetics Working Group , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Mark V Pinti
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA.,b Mitochondria, Metabolism & Bioenergetics Working Group , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Ashley N Brandebura
- d Rockefeller Neuroscience Institute , West Virginia University School of Medicine , Morgantown , WV , USA.,e Department of Biochemistry , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Cody E Nichols
- f Immunity, Inflammation, and Disease Laboratory , National Institute of Environmental Health Sciences , Research Triangle Park , NC , USA
| | - Amina Kunovac
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA.,b Mitochondria, Metabolism & Bioenergetics Working Group , West Virginia University School of Medicine , Morgantown , WV , USA
| | - William T Goldsmith
- c Toxicology Working Group , West Virginia University School of Medicine , Morgantown , WV , USA.,g Department of Physiology, Pharmacology & Neuroscience , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Sherri A Friend
- h CDC , National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Alaeddin B Abukabda
- c Toxicology Working Group , West Virginia University School of Medicine , Morgantown , WV , USA.,g Department of Physiology, Pharmacology & Neuroscience , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Garrett K Fink
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA
| | - Timothy R Nurkiewicz
- c Toxicology Working Group , West Virginia University School of Medicine , Morgantown , WV , USA.,g Department of Physiology, Pharmacology & Neuroscience , West Virginia University School of Medicine , Morgantown , WV , USA
| | - John M Hollander
- a Division of Exercise Physiology , West Virginia University School of Medicine , Morgantown , WV , USA.,b Mitochondria, Metabolism & Bioenergetics Working Group , West Virginia University School of Medicine , Morgantown , WV , USA
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38
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Shepherd DL, Hathaway QA, Nichols CE, Durr AJ, Pinti MV, Hughes KM, Kunovac A, Stine SM, Hollander JM. Mitochondrial proteome disruption in the diabetic heart through targeted epigenetic regulation at the mitochondrial heat shock protein 70 (mtHsp70) nuclear locus. J Mol Cell Cardiol 2018; 119:104-115. [PMID: 29733819 DOI: 10.1016/j.yjmcc.2018.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/26/2018] [Accepted: 04/28/2018] [Indexed: 01/17/2023]
Abstract
>99% of the mitochondrial proteome is nuclear-encoded. The mitochondrion relies on a coordinated multi-complex process for nuclear genome-encoded mitochondrial protein import. Mitochondrial heat shock protein 70 (mtHsp70) is a key component of this process and a central constituent of the protein import motor. Type 2 diabetes mellitus (T2DM) disrupts mitochondrial proteomic signature which is associated with decreased protein import efficiency. The goal of this study was to manipulate the mitochondrial protein import process through targeted restoration of mtHsp70, in an effort to restore proteomic signature and mitochondrial function in the T2DM heart. A novel line of cardiac-specific mtHsp70 transgenic mice on the db/db background were generated and cardiac mitochondrial subpopulations were isolated with proteomic evaluation and mitochondrial function assessed. MicroRNA and epigenetic regulation of the mtHsp70 gene during T2DM were also evaluated. MtHsp70 overexpression restored cardiac function and nuclear-encoded mitochondrial protein import, contributing to a beneficial impact on proteome signature and enhanced mitochondrial function during T2DM. Further, transcriptional repression at the mtHsp70 genomic locus through increased localization of H3K27me3 during T2DM insult was observed. Our results suggest that restoration of a key protein import constituent, mtHsp70, provides therapeutic benefit through attenuation of mitochondrial and contractile dysfunction in T2DM.
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Affiliation(s)
- Danielle L Shepherd
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Quincy A Hathaway
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Cody E Nichols
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Andrya J Durr
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Mark V Pinti
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Kristen M Hughes
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Amina Kunovac
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - Seth M Stine
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States
| | - John M Hollander
- Division of Exercise Physiology, Mitochondrial, Metabolism and Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26505, United States.
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39
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Monoamine oxidase-dependent endoplasmic reticulum-mitochondria dysfunction and mast cell degranulation lead to adverse cardiac remodeling in diabetes. Cell Death Differ 2018; 25:1671-1685. [PMID: 29459772 PMCID: PMC6015497 DOI: 10.1038/s41418-018-0071-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 01/07/2018] [Accepted: 01/18/2018] [Indexed: 12/11/2022] Open
Abstract
Monoamine oxidase (MAO) inhibitors ameliorate contractile function in diabetic animals, but the mechanisms remain unknown. Equally elusive is the interplay between the cardiomyocyte alterations induced by hyperglycemia and the accompanying inflammation. Here we show that exposure of primary cardiomyocytes to high glucose and pro-inflammatory stimuli leads to MAO-dependent increase in reactive oxygen species that causes permeability transition pore opening and mitochondrial dysfunction. These events occur upstream of endoplasmic reticulum (ER) stress and are abolished by the MAO inhibitor pargyline, highlighting the role of these flavoenzymes in the ER/mitochondria cross-talk. In vivo, streptozotocin administration to mice induced oxidative changes and ER stress in the heart, events that were abolished by pargyline. Moreover, MAO inhibition prevented both mast cell degranulation and altered collagen deposition, thereby normalizing diastolic function. Taken together, these results elucidate the mechanisms underlying MAO-induced damage in diabetic cardiomyopathy and provide novel evidence for the role of MAOs in inflammation and inter-organelle communication. MAO inhibitors may be considered as a therapeutic option for diabetic complications as well as for other disorders in which mast cell degranulation is a dominant phenomenon.
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40
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Nichols CE, Shepherd DL, Hathaway QA, Durr AJ, Thapa D, Abukabda A, Yi J, Nurkiewicz TR, Hollander JM. Reactive oxygen species damage drives cardiac and mitochondrial dysfunction following acute nano-titanium dioxide inhalation exposure. Nanotoxicology 2018; 12:32-48. [PMID: 29243970 PMCID: PMC5777890 DOI: 10.1080/17435390.2017.1416202] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 12/07/2017] [Accepted: 12/07/2017] [Indexed: 12/25/2022]
Abstract
Nanotechnology offers innovation in products from cosmetics to drug delivery, leading to increased engineered nanomaterial (ENM) exposure. Unfortunately, health impacts of ENM are not fully realized. Titanium dioxide (TiO2) is among the most widely produced ENM due to its use in numerous applications. Extrapulmonary effects following pulmonary exposure have been identified and may involve reactive oxygen species (ROS). The goal of this study was to determine the extent of ROS involvement on cardiac function and the mitochondrion following nano-TiO2 exposure. To address this question, we utilized a transgenic mouse model with overexpression of a novel mitochondrially-targeted antioxidant enzyme (phospholipid hydroperoxide glutathione peroxidase; mPHGPx) which provides protection against oxidative stress to lipid membranes. MPHGPx mice and littermate controls were exposed to nano-TiO2 aerosols (Evonik, P25) to provide a calculated pulmonary deposition of 11 µg/mouse. Twenty-four hours following exposure, we observed diastolic dysfunction as evidenced by E/A ratios greater than 2 and increased radial strain during diastole in wild-type mice (p < 0.05 for both), indicative of restrictive filling. Overexpression of mPHGPx mitigated the contractile deficits resulting from nano-TiO2 exposure. To investigate the cellular mechanisms associated with the observed cardiac dysfunction, we focused our attention on the mitochondrion. We observed a significant increase in ROS production (p < 0.05) and decreased mitochondrial respiratory function (p < 0.05) following nano-TiO2 exposure which were attenuated in mPHGPx transgenic mice. In summary, nano-TiO2 inhalation exposure is associated with cardiac diastolic dysfunction and mitochondrial functional alterations, which can be mitigated by the overexpression of mPHGPx, suggesting ROS contribution in the development of contractile and bioenergetic dysfunction.
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Affiliation(s)
- Cody E. Nichols
- Division of Exercise Physiology; West Virginia University School of Medicine, Morgantown, WV 26506
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States
| | - Danielle L. Shepherd
- Division of Exercise Physiology; West Virginia University School of Medicine, Morgantown, WV 26506
- Mitochondria, Metabolism & Bioenergetics Working Group; West Virginia University School of Medicine, Morgantown, WV 26506
| | - Quincy A. Hathaway
- Division of Exercise Physiology; West Virginia University School of Medicine, Morgantown, WV 26506
- Mitochondria, Metabolism & Bioenergetics Working Group; West Virginia University School of Medicine, Morgantown, WV 26506
| | - Andrya J. Durr
- Division of Exercise Physiology; West Virginia University School of Medicine, Morgantown, WV 26506
- Mitochondria, Metabolism & Bioenergetics Working Group; West Virginia University School of Medicine, Morgantown, WV 26506
| | - Dharendra Thapa
- Division of Exercise Physiology; West Virginia University School of Medicine, Morgantown, WV 26506
| | - Alaeddin Abukabda
- Department of Physiology and Pharmacology; West Virginia University School of Medicine, Morgantown, WV 26506
| | - Jinghai Yi
- Department of Physiology and Pharmacology; West Virginia University School of Medicine, Morgantown, WV 26506
| | - Timothy R. Nurkiewicz
- Mitochondria, Metabolism & Bioenergetics Working Group; West Virginia University School of Medicine, Morgantown, WV 26506
- Department of Physiology and Pharmacology; West Virginia University School of Medicine, Morgantown, WV 26506
| | - John M. Hollander
- Division of Exercise Physiology; West Virginia University School of Medicine, Morgantown, WV 26506
- Mitochondria, Metabolism & Bioenergetics Working Group; West Virginia University School of Medicine, Morgantown, WV 26506
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41
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Chen Q, Younus M, Thompson J, Hu Y, Hollander JM, Lesnefsky EJ. Intermediary metabolism and fatty acid oxidation: novel targets of electron transport chain-driven injury during ischemia and reperfusion. Am J Physiol Heart Circ Physiol 2017; 314:H787-H795. [PMID: 29351463 DOI: 10.1152/ajpheart.00531.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cardiac ischemia-reperfusion (I/R) damages the electron transport chain (ETC), causing mitochondrial and cardiomyocyte injury. Reversible blockade of the ETC at complex I during ischemia protects the ETC and decreases cardiac injury. In the present study, we used an unbiased proteomic approach to analyze the extent of ETC-driven mitochondrial injury during I/R. Isolated-perfused mouse (C57BL/6) hearts underwent 25-min global ischemia (37°C) and 30-min reperfusion. In treated hearts, amobarbital (2 mM) was given for 1 min before ischemia to rapidly and reversibly block the ETC at complex I. Mitochondria were isolated at the end of reperfusion and subjected to unbiased proteomic analysis using tryptic digestion followed by liquid chromatography-mass spectrometry with isotope tags for relative and absolute quantification. Amobarbital treatment decreased cardiac injury and protected respiration. I/R decreased the content ( P < 0.05) of multiple mitochondrial matrix enzymes involved in intermediary metabolism compared with the time control. The contents of several enzymes in fatty acid oxidation were decreased compared with the time control. Blockade of ETC during ischemia largely prevented the decreases. Thus, after I/R, not only the ETC but also multiple pathways of intermediary metabolism sustain damage initiated by the ETC. If these damaged mitochondria persist in the myocyte, they remain a potent stimulus for ongoing injury and the transition to cardiomyopathy during prolonged reperfusion. Modulation of ETC function during early reperfusion is a key strategy to preserve mitochondrial metabolism and to decrease persistent mitochondria-driven injury during longer periods of reperfusion that predispose to ventricular dysfunction and heart failure. NEW & NOTEWORTHY Ischemia-reperfusion (I/R) damages mitochondria, which could be protected by reversible blockade of the electron transport chain (ETC). Unbiased proteomics with isotope tags for relative and absolute quantification analyzed mitochondrial damage during I/R and found that multiple enzymes in the tricarboxylic acid cycle, fatty acid oxidation, and ETC decreased, which could be prevented by ETC blockade. Strategic ETC modulation can reduce mitochondrial damage and cardiac injury.
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Affiliation(s)
- Qun Chen
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University , Richmond, Virginia
| | - Masood Younus
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University , Richmond, Virginia
| | - Jeremy Thompson
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University , Richmond, Virginia
| | - Ying Hu
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University , Richmond, Virginia
| | - John M Hollander
- Division of Exercise Physiology, Mitochondria, Metabolism, and Bioenergetics Working Group, West Virginia University , Morgantown, West Virginia
| | - Edward J Lesnefsky
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University , Richmond, Virginia.,Department of Biochemistry and Molecular Biology, Virginia Commonwealth University , Richmond, Virginia.,Department of Physiology and Biophysics, Virginia Commonwealth University , Richmond, Virginia.,McGuire Department of Veterans Affairs Medical Center , Richmond, Virginia
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42
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Shepherd DL, Hathaway QA, Pinti MV, Nichols CE, Durr AJ, Sreekumar S, Hughes KM, Stine SM, Martinez I, Hollander JM. Exploring the mitochondrial microRNA import pathway through Polynucleotide Phosphorylase (PNPase). J Mol Cell Cardiol 2017; 110:15-25. [PMID: 28709769 PMCID: PMC5854179 DOI: 10.1016/j.yjmcc.2017.06.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 06/20/2017] [Accepted: 06/27/2017] [Indexed: 01/01/2023]
Abstract
Cardiovascular disease is the primary cause of mortality for individuals with type 2 diabetes mellitus. During the diabetic condition, cardiovascular dysfunction can be partially attributed to molecular changes in the tissue, including alterations in microRNA (miRNA) interactions. MiRNAs have been reported in the mitochondrion and their presence may influence cellular bioenergetics, creating decrements in functional capacity. In this study, we examined the roles of Argonaute 2 (Ago2), a protein associated with cytosolic and mitochondrial miRNAs, and Polynucleotide Phosphorylase (PNPase), a protein found in the inner membrane space of the mitochondrion, to determine their role in mitochondrial miRNA import. In cardiac tissue from human and mouse models of type 2 diabetes mellitus, Ago2 protein levels were unchanged while PNPase protein expression levels were increased; also, there was an increase in the association between both proteins in the diabetic state. MiRNA-378 was found to be significantly increased in db/db mice, leading to decrements in ATP6 levels and ATP synthase activity, which was also exhibited when overexpressing PNPase in HL-1 cardiomyocytes and in HL-1 cells with stable miRNA-378 overexpression (HL-1-378). To assess potential therapeutic interventions, flow cytometry evaluated the capacity for targeting miRNA-378 species in mitochondria through antimiR treatment, revealing miRNA-378 level-dependent inhibition. Our study establishes PNPase as a contributor to mitochondrial miRNA import through the transport of miRNA-378, which may regulate bioenergetics during type 2 diabetes mellitus. Further, our data provide evidence that manipulation of PNPase levels may enhance the delivery of antimiR therapeutics to mitochondria in physiological and pathological conditions.
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Affiliation(s)
- Danielle L Shepherd
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States; Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Quincy A Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States; Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Mark V Pinti
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Cody E Nichols
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Andrya J Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States; Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Shruthi Sreekumar
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Kristen M Hughes
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Seth M Stine
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Ivan Martinez
- Cancer Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - John M Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506, United States; Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV 26506, United States.
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43
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Corbin DR, Rehg JE, Shepherd DL, Stoilov P, Percifield RJ, Horner L, Frase S, Zhang YM, Rock CO, Hollander JM, Jackowski S, Leonardi R. Excess coenzyme A reduces skeletal muscle performance and strength in mice overexpressing human PANK2. Mol Genet Metab 2017; 120:350-362. [PMID: 28189602 PMCID: PMC5382100 DOI: 10.1016/j.ymgme.2017.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 02/01/2017] [Indexed: 11/23/2022]
Abstract
Coenzyme A (CoA) is a cofactor that is central to energy metabolism and CoA synthesis is controlled by the enzyme pantothenate kinase (PanK). A transgenic mouse strain expressing human PANK2 was derived to determine the physiological impact of PANK overexpression and elevated CoA levels. The Tg(PANK2) mice expressed high levels of the transgene in skeletal muscle and heart; however, CoA was substantially elevated only in skeletal muscle, possibly associated with the comparatively low endogenous levels of acetyl-CoA, a potent feedback inhibitor of PANK2. Tg(PANK2) mice were smaller, had less skeletal muscle mass and displayed significantly impaired exercise tolerance and grip strength. Skeletal myofibers were characterized by centralized nuclei and aberrant mitochondria. Both the content of fully assembled complex I of the electron transport chain and ATP levels were reduced, while markers of oxidative stress were elevated in Tg(PANK2) skeletal muscle. These abnormalities were not detected in the Tg(PANK2) heart muscle, with the exception of spotty loss of cristae organization in the mitochondria. The data demonstrate that excessively high CoA may be detrimental to skeletal muscle function.
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Affiliation(s)
- Deborah R Corbin
- Department of Biochemistry, West Virginia University, Morgantown, WV 26506, USA
| | - Jerold E Rehg
- Department Pathology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Danielle L Shepherd
- Department of Exercise Physiology, West Virginia University, Morgantown, WV 26506, USA
| | - Peter Stoilov
- Department of Biochemistry, West Virginia University, Morgantown, WV 26506, USA
| | - Ryan J Percifield
- Department of Biology, West Virginia University, Morgantown, WV 26506, USA
| | - Linda Horner
- Cell and Tissue Imaging-Electron Microscopy Shared Resource, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Sharon Frase
- Cell and Tissue Imaging-Electron Microscopy Shared Resource, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Yong-Mei Zhang
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Charles O Rock
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - John M Hollander
- Department of Exercise Physiology, West Virginia University, Morgantown, WV 26506, USA
| | - Suzanne Jackowski
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Roberta Leonardi
- Department of Biochemistry, West Virginia University, Morgantown, WV 26506, USA.
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Braga CP, Boone CHT, Grove RA, Adamcova D, Fernandes AAH, Adamec J, de Magalhães Padilha P. Liver Proteome in Diabetes Type 1 Rat Model: Insulin-Dependent and -Independent Changes. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2016; 20:711-726. [PMID: 27849439 DOI: 10.1089/omi.2016.0135] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus type 1 (DM1) is a major public health problem that continues to burden the healthcare systems worldwide, costing exponentially more as the epidemic grows. Innovative strategies and omics system diagnostics for earlier diagnosis or prognostication of DM1 are essential to prevent secondary complications and alleviate the associated economic burden. In a preclinical study design that involved streptozotocin (STZ)-induced DM1, insulin-treated STZ-induced DM1, and control rats, we characterized the insulin-dependent and -independent changes in protein profiles in liver samples. Digested proteins were subjected to LC-MSE for proteomic data. Progenesis QI data processing and analysis of variance were utilized for statistical analyses. We found 305 proteins with significantly altered abundance among the control, DM1, and insulin-treated DM1 groups (p < 0.05). These differentially regulated proteins were related to enzymes that function in key metabolic pathways and stress responses. For example, gluconeogenesis appeared to return to control levels in the DM1 group after insulin treatment, with the restoration of gluconeogenesis regulatory enzyme, FBP1. Insulin administration to DM1 rats also restored the blood glucose levels and enzymes of general stress and antioxidant response systems. These observations are crucial for insights on DM1 pathophysiology and new molecular targets for future clinical biomarkers, drug discovery, and development. Additionally, we underscore that proteomics offers much potential in preclinical biomarker discovery for diabetes as well as common complex diseases such as cancer, dementia, and infectious disorders.
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Affiliation(s)
- Camila Pereira Braga
- 1 Department of Chemistry and Biochemistry, Institute of Bioscience, São Paulo State University , Botucatu, Brazil .,2 Redox Biology Center, Department of Biochemistry, University of Nebraska-Lincoln , Lincoln, NE, USA
| | - Cory H T Boone
- 2 Redox Biology Center, Department of Biochemistry, University of Nebraska-Lincoln , Lincoln, NE, USA
| | - Ryan A Grove
- 2 Redox Biology Center, Department of Biochemistry, University of Nebraska-Lincoln , Lincoln, NE, USA
| | - Dana Adamcova
- 2 Redox Biology Center, Department of Biochemistry, University of Nebraska-Lincoln , Lincoln, NE, USA
| | | | - Jiri Adamec
- 2 Redox Biology Center, Department of Biochemistry, University of Nebraska-Lincoln , Lincoln, NE, USA
| | - Pedro de Magalhães Padilha
- 1 Department of Chemistry and Biochemistry, Institute of Bioscience, São Paulo State University , Botucatu, Brazil
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45
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Novgorodov SA, Riley CL, Yu J, Keffler JA, Clarke CJ, Van Laer AO, Baicu CF, Zile MR, Gudz TI. Lactosylceramide contributes to mitochondrial dysfunction in diabetes. J Lipid Res 2016; 57:546-62. [PMID: 26900161 PMCID: PMC4808764 DOI: 10.1194/jlr.m060061] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 02/16/2016] [Indexed: 02/02/2023] Open
Abstract
Sphingolipids have been implicated as key mediators of cell-stress responses and effectors of mitochondrial function. To investigate potential mechanisms underlying mitochondrial dysfunction, an important contributor to diabetic cardiomyopathy, we examined alterations of cardiac sphingolipid metabolism in a mouse with streptozotocin-induced type 1 diabetes. Diabetes increased expression of desaturase 1, (dihydro)ceramide synthase (CerS)2, serine palmitoyl transferase 1, and the rate of ceramide formation by mitochondria-resident CerSs, indicating an activation of ceramide biosynthesis. However, the lack of an increase in mitochondrial ceramide suggests concomitant upregulation of ceramide-metabolizing pathways. Elevated levels of lactosylceramide, one of the initial products in the formation of glycosphingolipids were accompanied with decreased respiration and calcium retention capacity (CRC) in mitochondria from diabetic heart tissue. In baseline mitochondria, lactosylceramide potently suppressed state 3 respiration and decreased CRC, suggesting lactosylceramide as the primary sphingolipid responsible for mitochondrial defects in diabetic hearts. Moreover, knocking down the neutral ceramidase (NCDase) resulted in an increase in lactosylceramide level, suggesting a crosstalk between glucosylceramide synthase- and NCDase-mediated ceramide utilization pathways. These data suggest the glycosphingolipid pathway of ceramide metabolism as a promising target to correct mitochondrial abnormalities associated with type 1 diabetes.
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Affiliation(s)
- Sergei A Novgorodov
- Departments of Neuroscience Medical University of South Carolina, Charleston, SC 29425
| | | | - Jin Yu
- Departments of Neuroscience Medical University of South Carolina, Charleston, SC 29425
| | - Jarryd A Keffler
- Departments of Neuroscience Medical University of South Carolina, Charleston, SC 29425
| | | | - An O Van Laer
- Ralph H. Johnson Veteran Affairs Medical Center, Charleston, SC 29401 Medicine, Medical University of South Carolina, Charleston, SC 29425
| | - Catalin F Baicu
- Ralph H. Johnson Veteran Affairs Medical Center, Charleston, SC 29401 Medicine, Medical University of South Carolina, Charleston, SC 29425
| | - Michael R Zile
- Ralph H. Johnson Veteran Affairs Medical Center, Charleston, SC 29401 Medicine, Medical University of South Carolina, Charleston, SC 29425
| | - Tatyana I Gudz
- Departments of Neuroscience Medical University of South Carolina, Charleston, SC 29425 Ralph H. Johnson Veteran Affairs Medical Center, Charleston, SC 29401
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Zabielski P, Lanza IR, Gopala S, Heppelmann CJH, Bergen HR, Dasari S, Nair KS. Altered Skeletal Muscle Mitochondrial Proteome As the Basis of Disruption of Mitochondrial Function in Diabetic Mice. Diabetes 2016; 65:561-73. [PMID: 26718503 PMCID: PMC4764144 DOI: 10.2337/db15-0823] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 12/01/2015] [Indexed: 12/11/2022]
Abstract
Insulin plays pivotal role in cellular fuel metabolism in skeletal muscle. Despite being the primary site of energy metabolism, the underlying mechanism on how insulin deficiency deranges skeletal muscle mitochondrial physiology remains to be fully understood. Here we report an important link between altered skeletal muscle proteome homeostasis and mitochondrial physiology during insulin deficiency. Deprivation of insulin in streptozotocin-induced diabetic mice decreased mitochondrial ATP production, reduced coupling and phosphorylation efficiency, and increased oxidant emission in skeletal muscle. Proteomic survey revealed that the mitochondrial derangements during insulin deficiency were related to increased mitochondrial protein degradation and decreased protein synthesis, resulting in reduced abundance of proteins involved in mitochondrial respiration and β-oxidation. However, a paradoxical upregulation of proteins involved in cellular uptake of fatty acids triggered an accumulation of incomplete fatty acid oxidation products in skeletal muscle. These data implicate a mismatch of β-oxidation and fatty acid uptake as a mechanism leading to increased oxidative stress in diabetes. This notion was supported by elevated oxidative stress in cultured myotubes exposed to palmitate in the presence of a β-oxidation inhibitor. Together, these results indicate that insulin deficiency alters the balance of proteins involved in fatty acid transport and oxidation in skeletal muscle, leading to impaired mitochondrial function and increased oxidative stress.
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Affiliation(s)
- Piotr Zabielski
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic College of Medicine, Rochester, MN
| | - Ian R Lanza
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic College of Medicine, Rochester, MN
| | - Srinivas Gopala
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic College of Medicine, Rochester, MN
| | | | - H Robert Bergen
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN
| | - Surendra Dasari
- Division of Biomedical Statistics and Informatics, Mayo Clinic College of Medicine, Rochester, MN
| | - K Sreekumaran Nair
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic College of Medicine, Rochester, MN
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Shepherd DL, Nichols CE, Croston TL, McLaughlin SL, Petrone AB, Lewis SE, Thapa D, Long DM, Dick GM, Hollander JM. Early detection of cardiac dysfunction in the type 1 diabetic heart using speckle-tracking based strain imaging. J Mol Cell Cardiol 2016; 90:74-83. [PMID: 26654913 PMCID: PMC4725063 DOI: 10.1016/j.yjmcc.2015.12.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/11/2015] [Accepted: 12/02/2015] [Indexed: 12/14/2022]
Abstract
Enhanced sensitivity in echocardiographic analyses may allow for early detection of changes in cardiac function beyond the detection limits of conventional echocardiographic analyses, particularly in a small animal model. The goal of this study was to compare conventional echocardiographic measurements and speckle-tracking based strain imaging analyses in a small animal model of type 1 diabetes mellitus. Conventional analyses revealed differences in ejection fraction, fractional shortening, cardiac output, and stroke volume in diabetic animals relative to controls at 6-weeks post-diabetic onset. In contrast, when assessing short- and long-axis speckle-tracking based strain analyses, diabetic mice showed changes in average systolic radial strain, radial strain rate, radial displacement, and radial velocity, as well as decreased circumferential and longitudinal strain rate, as early as 1-week post-diabetic onset and persisting throughout the diabetic study. Further, we performed regional analyses for the LV and found that the free wall region was affected in both the short- and long-axis when assessing radial dimension parameters. These changes began 1-week post-diabetic onset and remained throughout the progression of the disease. These findings demonstrate the use of speckle-tracking based strain as an approach to elucidate cardiac dysfunction from a global perspective, identifying left ventricular cardiac regions affected during the progression of type 1 diabetes mellitus earlier than contractile changes detected by conventional echocardiographic measurements.
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Affiliation(s)
- Danielle L Shepherd
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States
| | - Cody E Nichols
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States
| | - Tara L Croston
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States
| | - Sarah L McLaughlin
- Department of Cancer Cell Biology, School of Medicine, West Virginia University, Morgantown, WV 26505, United States
| | - Ashley B Petrone
- Department of Neurobiology and Anatomy, School of Medicine, West Virginia University, Morgantown, WV 26505, United States
| | - Sara E Lewis
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States
| | - Dharendra Thapa
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States
| | - Dustin M Long
- Department of Biostatistics, School of Public Health, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26505, United States
| | - Gregory M Dick
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States
| | - John M Hollander
- Department of Exercise Physiology, Center for Cardiovascular and Respiratory Sciences, School of Medicine, West Virginia University, Morgantown, WV, 26505, United States.
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Nichols CE, Shepherd DL, Knuckles TL, Thapa D, Stricker JC, Stapleton PA, Minarchick VC, Erdely A, Zeidler-Erdely PC, Alway SE, Nurkiewicz TR, Hollander JM. Cardiac and mitochondrial dysfunction following acute pulmonary exposure to mountaintop removal mining particulate matter. Am J Physiol Heart Circ Physiol 2015; 309:H2017-30. [PMID: 26497962 DOI: 10.1152/ajpheart.00353.2015] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 10/05/2015] [Indexed: 01/29/2023]
Abstract
Throughout the United States, air pollution correlates with adverse health outcomes, and cardiovascular disease incidence is commonly increased following environmental exposure. In areas surrounding active mountaintop removal mines (MTM), a further increase in cardiovascular morbidity is observed and may be attributed in part to particulate matter (PM) released from the mine. The mitochondrion has been shown to be central in the etiology of many cardiovascular diseases, yet its roles in PM-related cardiovascular effects are not realized. In this study, we sought to elucidate the cardiac processes that are disrupted following exposure to mountaintop removal mining particulate matter (PM MTM). To address this question, we exposed male Sprague-Dawley rats to PM MTM, collected within one mile of an active MTM site, using intratracheal instillation. Twenty-four hours following exposure, we evaluated cardiac function, apoptotic indices, and mitochondrial function. PM MTM exposure elicited a significant decrease in ejection fraction and fractional shortening compared with controls. Investigation into the cellular impacts of PM MTM exposure identified a significant increase in mitochondrial-induced apoptotic signaling, as reflected by an increase in TUNEL-positive nuclei and increased caspase-3 and -9 activities. Finally, a significant increase in mitochondrial transition pore opening leading to decreased mitochondrial function was identified following exposure. In conclusion, our data suggest that pulmonary exposure to PM MTM increases cardiac mitochondrial-associated apoptotic signaling and decreases mitochondrial function concomitant with decreased cardiac function. These results suggest that increased cardiovascular disease incidence in populations surrounding MTM mines may be associated with increased cardiac cell apoptotic signaling and decreased mitochondrial function.
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Affiliation(s)
- Cody E Nichols
- West Virginia University School of Medicine, Division of Exercise Physiology, Morgantown, West Virginia; Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia
| | - Danielle L Shepherd
- West Virginia University School of Medicine, Division of Exercise Physiology, Morgantown, West Virginia; Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia
| | - Travis L Knuckles
- Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia; West Virginia University, School of Public Health, Morgantown, West Virginia
| | - Dharendra Thapa
- West Virginia University School of Medicine, Division of Exercise Physiology, Morgantown, West Virginia; Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia
| | - Janelle C Stricker
- Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia
| | - Phoebe A Stapleton
- Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia; West Virginia University, Department of Physiology and Pharmacology, Morgantown, West Virginia
| | - Valerie C Minarchick
- Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia; West Virginia University, Department of Physiology and Pharmacology, Morgantown, West Virginia
| | - Aaron Erdely
- West Virginia University, Department of Physiology and Pharmacology, Morgantown, West Virginia; National Institute for Occupational Safety and Health, Morgantown, West Virginia
| | - Patti C Zeidler-Erdely
- West Virginia University, Department of Physiology and Pharmacology, Morgantown, West Virginia; National Institute for Occupational Safety and Health, Morgantown, West Virginia
| | - Stephen E Alway
- West Virginia University School of Medicine, Division of Exercise Physiology, Morgantown, West Virginia; Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia
| | - Timothy R Nurkiewicz
- Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia; West Virginia University, Department of Physiology and Pharmacology, Morgantown, West Virginia
| | - John M Hollander
- West Virginia University School of Medicine, Division of Exercise Physiology, Morgantown, West Virginia; Center for Cardiovascular and Respiratory Sciences, Morgantown, West Virginia;
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49
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Jagannathan R, Thapa D, Nichols CE, Shepherd DL, Stricker JC, Croston TL, Baseler WA, Lewis SE, Martinez I, Hollander JM. Translational Regulation of the Mitochondrial Genome Following Redistribution of Mitochondrial MicroRNA in the Diabetic Heart. ACTA ACUST UNITED AC 2015; 8:785-802. [PMID: 26377859 DOI: 10.1161/circgenetics.115.001067] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 09/01/2015] [Indexed: 01/05/2023]
Abstract
BACKGROUND Cardiomyocytes are rich in mitochondria which are situated in spatially distinct subcellular regions, including those under the plasma membrane, subsarcolemmal mitochondria, and those between the myofibrils, interfibrillar mitochondria. We previously observed subpopulation-specific differences in mitochondrial proteomes following diabetic insult. The objective of this study was to determine whether mitochondrial genome-encoded proteins are regulated by microRNAs inside the mitochondrion and whether subcellular spatial location or diabetes mellitus influences the dynamics. METHODS AND RESULTS Using microarray technology coupled with cross-linking immunoprecipitation and next generation sequencing, we identified a pool of mitochondrial microRNAs, termed mitomiRs, that are redistributed in spatially distinct mitochondrial subpopulations in an inverse manner following diabetic insult. Redistributed mitomiRs displayed distinct interactions with the mitochondrial genome requiring specific stoichiometric associations with RNA-induced silencing complex constituents argonaute-2 (Ago2) and fragile X mental retardation-related protein 1 (FXR1) for translational regulation. In the presence of Ago2 and FXR1, redistribution of mitomiR-378 to the interfibrillar mitochondria following diabetic insult led to downregulation of mitochondrially encoded F0 component ATP6. Next generation sequencing analyses identified specific transcriptome and mitomiR sequences associated with ATP6 regulation. Overexpression of mitomiR-378 in HL-1 cells resulted in its accumulation in the mitochondrion and downregulation of functional ATP6 protein, whereas antagomir blockade restored functional ATP6 protein and cardiac pump function. CONCLUSIONS We propose mitomiRs can translationally regulate mitochondrially encoded proteins in spatially distinct mitochondrial subpopulations during diabetes mellitus. The results reveal the requirement of RNA-induced silencing complex constituents in the mitochondrion for functional mitomiR translational regulation and provide a connecting link between diabetic insult and ATP synthase function.
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Affiliation(s)
- Rajaganapathi Jagannathan
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Dharendra Thapa
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Cody E Nichols
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Danielle L Shepherd
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Janelle C Stricker
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Tara L Croston
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Walter A Baseler
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Sara E Lewis
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - Ivan Martinez
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown
| | - John M Hollander
- From the Department of Human Performances, Division of Exercise Physiology (R.J., D.T., C.E.N., D.L.S., J.C.S., T.L.C., W.A.B., S.E.L., J.M.H.), Center for Cardiovascular and Respiratory Sciences (R.J., D.T., C.E.N., D.L.S., T.L.C., W.A.B., S.E.L., J.M.H.), Department of Microbiology, Immunology and Cell Biology (I.M.), and Mary Babb Randolph Cancer Center (I.M.), West Virginia University School of Medicine, Morgantown.
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50
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Wende AR. Post-translational modifications of the cardiac proteome in diabetes and heart failure. Proteomics Clin Appl 2015; 10:25-38. [PMID: 26140508 PMCID: PMC4698356 DOI: 10.1002/prca.201500052] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/03/2015] [Accepted: 06/29/2015] [Indexed: 12/19/2022]
Abstract
Cardiovascular complications are the leading cause of death in diabetic patients. Decades of research has focused on altered gene expression, altered cellular signaling, and altered metabolism. This work has led to better understanding of disease progression and treatments aimed at reversing or stopping this deadly process. However, one of the pieces needed to complete the puzzle and bridge the gap between altered gene expression and changes in signaling/metabolism is the proteome and its host of modifications. Defining the mechanisms of regulation includes examining protein levels, localization, and activity of the functional component of cellular machinery. Excess or misutilization of nutrients in obesity and diabetes may lead to PTMs contributing to cardiovascular disease progression. PTMs link regulation of metabolic changes in the healthy and diseased heart with regulation of gene expression itself (e.g. epigenetics), protein enzymatic activity (e.g. mitochondrial oxidative capacity), and function (e.g. contractile machinery). Although a number of PTMs are involved in each of these pathways, we will highlight the role of the serine and threonine O‐linked addition of β‐N‐acetyl‐glucosamine or O‐GlcNAcylation. This nexus of nutrient supply, utilization, and storage allows for the modification and translation of mitochondrial function to many other aspects of the cell.
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Affiliation(s)
- Adam R Wende
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
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