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Wang C, Deng X, Li L, Li M. Maternally Inherited Essential Hypertension May Be Associated with the Mutations in Mitochondrial tRNA Glu Gene. Pharmgenomics Pers Med 2024; 17:13-26. [PMID: 38222291 PMCID: PMC10787565 DOI: 10.2147/pgpm.s436235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 12/21/2023] [Indexed: 01/16/2024] Open
Abstract
Background Mitochondrial DNA (mtDNA) mutations are associated with essential hypertension (EH), but the molecular mechanism remains largely unknown. Objective The aim of this study is to explore the association between mtDNA mutations and EH. Methods Two maternally inherited families with EH are underwent clinical, genetic and biochemical assessments. mtDNA mutations are screened by PCR-Sanger sequencing and phylogenetic, and bioinformatics analyses are performed to evaluate the pathogenicity of mtDNA mutations. We also generate cytoplasmic hybrid (cybrid) cell lines to analysis mitochondrial functions. Results Matrilineal relatives exhibit variable degree of clinical phenotypes. Molecular analysis reveals the presence of m.A14693G and m.A14696G mutations in two pedigrees. Notably, the m.A14693G mutation occurs at position 54 in the TψC loop of tRNAGlu, a position which is critical for post-transcriptionally modification of tRNAGlu. While the m.A14696G mutation creates a novel base-pairing (51C-64G). Bioinformatic analysis shows that these mutations alter tRNAGlu secondary structure. Additionally, patients with tRNAGlu mutations exhibit markedly decreased in mtDNA copy number, mitochondrial membrane potential (MMP) and ATP, whereas the levels of reactive oxygen species (ROS) increase significantly. Conclusion The m.A14696G and m.A14693G mutations lead to failure in tRNAGlu metabolism and cause mitochondrial dysfunction that is responsible for EH.
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Affiliation(s)
- Chun Wang
- Department of Integrated TCM & Western Medicine, Mengcheng County Second People’s Hospital, Anhui, 233500, People’s Republic of China
| | - Xin Deng
- Department of Integrated TCM & Western Medicine, Mengcheng County Second People’s Hospital, Anhui, 233500, People’s Republic of China
| | - Lei Li
- Department of Cardiology, Mengcheng County Second People’s Hospital, Anhui, 233500, People’s Republic of China
| | - Mei Li
- Department of Pharmacy, Mengcheng County Second People’s Hospital, Anhui, 233500, People’s Republic of China
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2
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Lozano O, Marcos P, Salazar-Ramirez FDJ, Lázaro-Alfaro AF, Sobrevia L, García-Rivas G. Targeting the mitochondrial Ca 2+ uniporter complex in cardiovascular disease. Acta Physiol (Oxf) 2023; 237:e13946. [PMID: 36751976 DOI: 10.1111/apha.13946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023]
Abstract
Cardiovascular diseases (CVDs), the leading cause of death worldwide, share in common mitochondrial dysfunction, in specific a dysregulation of Ca2+ uptake dynamics through the mitochondrial Ca2+ uniporter (MCU) complex. In particular, Ca2+ uptake regulates the mitochondrial ATP production, mitochondrial dynamics, oxidative stress, and cell death. Therefore, modulating the activity of the MCU complex to regulate Ca2+ uptake, has been suggested as a potential therapeutic approach for the treatment of CVDs. Here, the role and implications of the MCU complex in CVDs are presented, followed by a review of the evidence for MCU complex modulation, genetically and pharmacologically. While most approaches have aimed within the MCU complex for the modulation of the Ca2+ pore channel, the MCU subunit, its intra- and extra- mitochondrial implications, including Ca2+ dynamics, oxidative stress, post-translational modifications, and its repercussions in the cardiac function, highlight that targeting the MCU complex has the translational potential for novel CVDs therapeutics.
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Affiliation(s)
- Omar Lozano
- Cátedra de Cardiología y Medicina Vascular, School of Medicine and Health Sciences, Tecnologico de Monterrey, Monterrey, Mexico
- Biomedical Research Center, Hospital Zambrano-Hellion, TecSalud, Tecnologico de Monterrey, San Pedro Garza García, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Mexico
| | - Patricio Marcos
- Cátedra de Cardiología y Medicina Vascular, School of Medicine and Health Sciences, Tecnologico de Monterrey, Monterrey, Mexico
| | - Felipe de Jesús Salazar-Ramirez
- Cátedra de Cardiología y Medicina Vascular, School of Medicine and Health Sciences, Tecnologico de Monterrey, Monterrey, Mexico
| | - Anay F Lázaro-Alfaro
- Cátedra de Cardiología y Medicina Vascular, School of Medicine and Health Sciences, Tecnologico de Monterrey, Monterrey, Mexico
| | - Luis Sobrevia
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Mexico
- Cellular and Molecular Physiology Laboratory, Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Physiology, Faculty of Pharmacy, Universidad de Sevilla, Seville, Spain
- University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine and Biomedical Sciences, University of Queensland, Herston, Queensland, Australia
| | - Gerardo García-Rivas
- Cátedra de Cardiología y Medicina Vascular, School of Medicine and Health Sciences, Tecnologico de Monterrey, Monterrey, Mexico
- Biomedical Research Center, Hospital Zambrano-Hellion, TecSalud, Tecnologico de Monterrey, San Pedro Garza García, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Mexico
- Center of Functional Medicine, Hospital Zambrano-Hellion, TecSalud, Tecnologico de Monterrey, San Pedro Garza García, Mexico
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3
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Ren B, Guan MX, Zhou T, Cai X, Shan G. Emerging functions of mitochondria-encoded noncoding RNAs. Trends Genet 2023; 39:125-139. [PMID: 36137834 DOI: 10.1016/j.tig.2022.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/03/2022] [Accepted: 08/11/2022] [Indexed: 01/27/2023]
Abstract
Mitochondria, organelles that harbor their own circular genomes, are critical for energy production and homeostasis maintenance in eukaryotic cells. Recent studies discovered hundreds of mitochondria-encoded noncoding RNAs (mt-ncRNAs), including novel subtypes of mitochondria-encoded circular RNAs (mecciRNAs) and mitochondria-encoded double-stranded RNAs (mt-dsRNAs). Here, we discuss the emerging field of mt-ncRNAs by reviewing their expression patterns, biogenesis, metabolism, regulatory roles, and functional mechanisms. Many mt-ncRNAs have regulatory roles in cellular physiology, and some are associated with, or even act as, causal factors in human diseases. We also highlight developments in technologies and methodologies and further insights into future perspectives and challenges in studying these noncoding RNAs, as well as their potential biomedical applications.
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Affiliation(s)
- Bingbing Ren
- Department of Pulmonary and Critical Care Medicine, Regional Medical Center for National Institute of Respiratory Disease, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China; Cancer Center, Zhejiang University, Hangzhou 310058, China; Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
| | - Min-Xin Guan
- Division of Medical Genetics and Genomics, The Children's Hospital, School of Medicine, Zhejiang University, Hangzhou 310052, China; Zhejiang Provincial Key Lab of Genetic and Developmental Disorder, Institute of Genetics, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Tianhua Zhou
- Cancer Center, Zhejiang University, Hangzhou 310058, China; Department of Cell Biology and Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China; Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, China
| | - Xiujun Cai
- Cancer Center, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China; Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China; Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Zhejiang University, Hangzhou 310016, China; Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Zhejiang University, Hangzhou 310016, China
| | - Ge Shan
- Department of Pulmonary and Critical Care Medicine, Regional Medical Center for National Institute of Respiratory Disease, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China; Cancer Center, Zhejiang University, Hangzhou 310058, China; Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China; Department of Clinical Laboratory, The First Affiliated Hospital of USTC, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230027, China.
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4
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The Role of Mitochondrial DNA Mutations in Cardiovascular Diseases. Int J Mol Sci 2022; 23:ijms23020952. [PMID: 35055137 PMCID: PMC8778138 DOI: 10.3390/ijms23020952] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/08/2022] [Accepted: 01/14/2022] [Indexed: 02/01/2023] Open
Abstract
Cardiovascular diseases (CVD) are one of the leading causes of morbidity and mortality worldwide. mtDNA (mitochondrial DNA) mutations are known to participate in the development and progression of some CVD. Moreover, specific types of mitochondria-mediated CVD have been discovered, such as MIEH (maternally inherited essential hypertension) and maternally inherited CHD (coronary heart disease). Maternally inherited mitochondrial CVD is caused by certain mutations in the mtDNA, which encode structural mitochondrial proteins and mitochondrial tRNA. In this review, we focus on recently identified mtDNA mutations associated with CVD (coronary artery disease and hypertension). Additionally, new data suggest the role of mtDNA mutations in Brugada syndrome and ischemic stroke, which before were considered only as a result of mutations in nuclear genes. Moreover, we discuss the molecular mechanisms of mtDNA involvement in the development of the disease.
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Liu Y, Chen Y. Mitochondrial tRNA Mutations Associated With Essential Hypertension: From Molecular Genetics to Function. Front Cell Dev Biol 2021; 8:634137. [PMID: 33585472 PMCID: PMC7874112 DOI: 10.3389/fcell.2020.634137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 12/28/2020] [Indexed: 11/13/2022] Open
Abstract
Essential hypertension (EH) is one of the most common cardiovascular diseases worldwide, entailing a high level of morbidity. EH is a multifactorial disease influenced by both genetic and environmental factors, including mitochondrial DNA (mtDNA) genotype. Previous studies identified mtDNA mutations that are associated with maternally inherited hypertension, including tRNAIle m.4263A>G, m.4291T>C, m.4295A>G, tRNAMet m.4435A>G, tRNAAla m.5655A>G, and tRNAMet/tRNAGln m.4401A>G, et al. These mtDNA mutations alter tRNA structure, thereby leading to metabolic disorders. Metabolic defects associated with mitochondrial tRNAs affect protein synthesis, cause oxidative phosphorylation defects, reduced ATP synthesis, and increase production of reactive oxygen species. In this review we discuss known mutations of tRNA genes encoded by mtDNA and the potential mechanisms by which these mutations may contribute to hypertension.
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Affiliation(s)
- Yuqi Liu
- Cardiac Department, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing, China.,Department of Cardiology & National Clinical Research Center of Geriatrics Disease, Chinese PLA General Hospital, Beijing, China.,Beijing Key Laboratory of Chronic Heart Failure Precision Medicine, Chinese PLA General Hospital, Beijing, China.,National Key Laboratory of Kidney Diseases, Chinese PLA General Hospital, Beijing, China
| | - Yundai Chen
- Cardiac Department, Chinese PLA General Hospital, Beijing, China
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6
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Poznyak AV, Ivanova EA, Sobenin IA, Yet SF, Orekhov AN. The Role of Mitochondria in Cardiovascular Diseases. BIOLOGY 2020; 9:biology9060137. [PMID: 32630516 PMCID: PMC7344641 DOI: 10.3390/biology9060137] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/16/2022]
Abstract
The role of mitochondria in cardiovascular diseases is receiving ever growing attention. As a central player in the regulation of cellular metabolism and a powerful controller of cellular fate, mitochondria appear to comprise an interesting potential therapeutic target. With the development of DNA sequencing methods, mutations in mitochondrial DNA (mtDNA) became a subject of intensive study, since many directly lead to mitochondrial dysfunction, oxidative stress, deficient energy production and, as a result, cell dysfunction and death. Many mtDNA mutations were found to be associated with chronic human diseases, including cardiovascular disorders. In particular, 17 mtDNA mutations were reported to be associated with ischemic heart disease in humans. In this review, we discuss the involvement of mitochondrial dysfunction in the pathogenesis of atherosclerosis and describe the mtDNA mutations identified so far that are associated with atherosclerosis and its risk factors.
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Affiliation(s)
- Anastasia V. Poznyak
- Department of Basic Research, Institute for Atherosclerosis Research, Skolkovo Innovative Center, 121609 Moscow, Russia; (A.V.P.); (E.A.I.)
| | - Ekaterina A. Ivanova
- Department of Basic Research, Institute for Atherosclerosis Research, Skolkovo Innovative Center, 121609 Moscow, Russia; (A.V.P.); (E.A.I.)
| | - Igor A. Sobenin
- Laboratory of Medical Genetics, National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Street, 121552 Moscow, Russia;
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System & Central Laboratory of Pathology, Institute of Human Morphology, 3 Tsyurupa Street, 117418 Moscow, Russia
| | - Shaw-Fang Yet
- Institute of Cellular and System Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County 35053, Taiwan;
| | - Alexander N. Orekhov
- Laboratory of Infection Pathology and Molecular Microecology, Institute of Human Morphology, 3 Tsyurupa Street, 117418 Moscow, Russia
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 8 Baltiyskaya st., 125315 Moscow, Russia
- Correspondence: ; Tel./Fax: +7-(495)-415-9594
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7
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Zhu Y, You J, Xu C, Gu X. Associations of mitochondrial DNA 3777-4679 region mutations with maternally inherited essential hypertensive subjects in China. BMC MEDICAL GENETICS 2020; 21:105. [PMID: 32414374 PMCID: PMC7229621 DOI: 10.1186/s12881-020-01045-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 05/07/2020] [Indexed: 12/28/2022]
Abstract
Background Nuclear genome or family mitochondrial screening system has become the hot focus of studies into essential hypertension. The role of mitochondrial DNA (mtDNA) in sporadic Chinese patients with hypertension has not been fully understood. The study was to evaluate the associations of mtDNA mutations with maternally inherited essential hypertensive subjects in China. Methods From June 2009 to June 2016, a total of 800 gender-matched Chinese patients with maternally inherited essential hypertension (MIEH) and control group were 1:1 enrolled in this case-control study. Genomic DNA was extracted from each person’s peripheral blood cells. The main mtDNA locations for MIEH were screened with oligodeoxynucleotides 3777-4679 bp, analyzed and compared with the updated consensus Cambridge Sequence. Pathogenic mtDNA mutations were identified from the mitochondrial map. Results MIEH subjects presented significantly higher values than those of control group in abdominal circumference (AC), waist circumference (WC), body mass index (BMI), fasting blood glucose (FBG), triglyceride (TG), low-density lipoprotein cholesterol (LDL) and renal function (P < 0.05). MIEH subjects carried more amino acid changes and coding sequence variants (P < 0.01) than control group. The allele frequencies of the eight single nucleotide polymorphisms (SNPs) were significantly different between the two groups, including m.3970 C > T, m.4048G > A, m.4071C > T, m.4086C > T, m. 4164A > G and m.4248 T > C in ND1 gene, and m.4386 T > C and m.4394C > T in tRNAGln gene(P < 0.001). Fifty-five homoplasmic or heteroplasmic mutations were detected in 5 genes: ND1, tRNAIle, tRNAMet, tRNAGln and ND2 gene. The ND1 gene was the main mutation site, where the most mtDNA mutation was m.3970 C > T. Conclusions The mtDNA mutations were involved in the process of MIEH. We identified mitochondrial genetic characteristics in MIEH patients in China. The present research serves as a solid foundation for further detailed research on the association between MIEH and mitochondrial dysfunction, and their causal relationship in Chinese and other populations with a similar lifestyle.
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Affiliation(s)
- Ye Zhu
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, Jiangsu, China. .,Department of Cardiology, Northern Jiangsu People's Hospital, Nantong West Road No.98, Yangzhou, 225001, Jiangsu, China.
| | - Jia You
- Department of Internal Medicine, Yangzhou Maternal and Child HealthCare Hospital, Yangzhou, 225001, Jiangsu, China
| | - Chao Xu
- Department of Biostatistics and Epidemiology, University of Oklahoma Health Science Center, Oklahoma City, OK, 73104, USA
| | - Xiang Gu
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, Jiangsu, China.,Department of Cardiology, Northern Jiangsu People's Hospital, Nantong West Road No.98, Yangzhou, 225001, Jiangsu, China
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8
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Tarasova NV, Vishnyakova PA, Logashina YA, Elchaninov AV. Mitochondrial Calcium Uniporter Structure and Function in Different Types of Muscle Tissues in Health and Disease. Int J Mol Sci 2019; 20:ijms20194823. [PMID: 31569359 PMCID: PMC6801532 DOI: 10.3390/ijms20194823] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/12/2019] [Accepted: 09/26/2019] [Indexed: 02/07/2023] Open
Abstract
Calcium ions (Ca2+) influx to mitochondrial matrix is crucial for the life of a cell. Mitochondrial calcium uniporter (mtCU) is a protein complex which consists of the pore-forming subunit (MCU) and several regulatory subunits. MtCU is the main contributor to inward Ca2+ currents through the inner mitochondrial membrane. Extensive investigations of mtCU involvement into normal and pathological molecular pathways started from the moment of discovery of its molecular components. A crucial role of mtCU in the control of these pathways is now recognized in both health and disease. In particular, impairments of mtCU function have been demonstrated for cardiovascular and skeletal muscle-associated pathologies. This review summarizes the current state of knowledge on mtCU structure, regulation, and function in different types of muscle tissues in health and disease.
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Affiliation(s)
- Nadezhda V Tarasova
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Trubetskaya str. 8, bld. 2, Moscow 119991, Russia.
| | - Polina A Vishnyakova
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of Russian Federation, 4 Oparina Street, Moscow 117997, Russia.
| | - Yulia A Logashina
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Trubetskaya str. 8, bld. 2, Moscow 119991, Russia.
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street 16/10, Moscow 117997, Russia.
| | - Andrey V Elchaninov
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of Russian Federation, 4 Oparina Street, Moscow 117997, Russia.
- Scientific Research Institute of Human Morphology, 3 Tsurupa Street, Moscow 117418, Russia.
- Peoples' Friendship University of Russia, 6 Miklukho-Maklaya Street, Moscow 117198, Russia.
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Zhu Y, Gu X, Xu C. Mitochondrial DNA 7908-8816 region mutations in maternally inherited essential hypertensive subjects in China. BMC Med Genomics 2018; 11:89. [PMID: 30326913 PMCID: PMC6191914 DOI: 10.1186/s12920-018-0408-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/25/2018] [Indexed: 12/14/2022] Open
Abstract
Background Nuclear genes or family-based mitochondrial screening have been the focus of genetic studies into essential hypertension. Studies into the role of mitochondria in sporadic Chinese hypertensives are lacking. The objective of the study was to explore the relationship between mitochondrial DNA (mtDNA) variations and the development of maternally inherited essential hypertension (MIEH) in China. Methods Yangzhou residents who were outpatients or in-patients at the Department of Cardiology in Northern Jiangsu People’s Hospital (Jiangsu, China) from June 2009 to June 2015 were recruited in a 1:1 case control study of 600 gender-matched Chinese MIEH subjects and controls. Genomic DNA was isolated from whole blood cells. The most likely sites for hypertension were screened using oligodeoxynucleotides at positions 7908–8816, purified and subsequently analyzed by direct sequencing according to the revised consensus Cambridge sequence. The frequency, density, type and conservative evolution of mtDNA variations were comprehensively analyzed. Results We found a statistical difference between the two groups for body mass index, waist circumference, abdominal circumference, triglyceride, low-density lipoprotein cholesterol, fasting blood glucose, uric acid, creatinine and blood urea nitrogen (P < 0.05). More amino-acid changes and RNA variants were found in MIEH subjects than the controls (P < 0.01). The detection system simultaneously identified 40 different heteroplasmic or homoplasmic mutations in 4 genes: COXII, tRNALys, ATP8 and ATP 6. The mtDNA variations were mainly distributed in regions of ATP6 binding sites, and the site of highest mutation frequency was m. 8414C > T. Three changes in single bases (C8414T in ATP8, A8701G in ATP6 and G8584A in ATP6) were significantly different in the MIEH patients and the controls (P < 0.001). The m.8273_8281del mutation was identified from 59 MIEH patients. Conclusions Our results indicate that novel mtDNA mutations may be involved in the pathological process of MIEH, and mitochondrial genetic characteristics were identified in MIEH individuals. Electronic supplementary material The online version of this article (10.1186/s12920-018-0408-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ye Zhu
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, Jiangsu, China.,Department of Cardiology, Northern Jiangsu People's Hospital, Yangzhou, 225001, Jiangsu, China
| | - Xiang Gu
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, Jiangsu, China. .,Department of Cardiology, Northern Jiangsu People's Hospital, Yangzhou, 225001, Jiangsu, China.
| | - Chao Xu
- Department of Biostatistics and Epidemiology, University of Oklahoma Health Science Center, Oklahoma City, OK, 73134, USA
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10
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Chen X, Zhu C, Zhou H, Zhang Y, Cai Z, Wu H, Ren X, Gao L, Zhang J, Li Y. Key Role of the Membrane Trafficking of Nav1.5 Channel Protein in Antidepressant-Induced Brugada Syndrome. Front Physiol 2018; 9:1230. [PMID: 30233406 PMCID: PMC6134322 DOI: 10.3389/fphys.2018.01230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 08/15/2018] [Indexed: 12/28/2022] Open
Abstract
Anti-depressant treatment has been found to be associated with the development of Brugada syndrome (BrS) through poorly defined mechanisms. Herein, this study aimed to explore the molecular basis for amitriptyline-induced BrS. The effects of long-term treatments of amitriptyline on Nav1.5 were investigated using neonatal rat ventricular myocytes. The electrophysiological properties, expression and distribution of Nav1.5 were studied using the patch clamp, Western blot and confocal laser microscopy assays. Interactions between Nav1.5 and its interacting proteins, including ankyrin-G and dystrophin, were evaluated by co-immunoprecipitation. A larger decrease in the peak INa occurred after long-term treatments to amitriptyline (56.64%) than after acute exposure to amitriptyline (28%). Slow recovery from inactivation of Nav1.5 was observed after acute or long-term treatments to amitriptyline. The expression of Nav1.5 on the cell membrane showed a larger decrease by long-term treatments to amitriptyline than by acute exposure to amitriptyline. After long-term treatments to amitriptyline, we observed reduced Nav1.5 proteins on the cell membrane and the disrupted co-localization of Nav1.5 and ankyrin-G or dystrophin. Co-immunoprecipitation experiments further testified that the combination of Nav1.5 and ankyrin-G or dystrophin was severely weakened after long-term treatments to amitriptyline, implying the failed interaction between Nav1.5 and ankyrin-G or dystrophin. Our data suggest that the long-term effect of amitriptyline serves as an important contribution to BrS induced by amitriptyline. The mechanisms of BrS induced by amitriptyline were related to Nav1.5 trafficking and could be explained by the disrupted interaction of ankyrin-G, dystrophin and Nav1.5.
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Affiliation(s)
- Xi Chen
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Chao Zhu
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Hao Zhou
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Yu Zhang
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Zhongqi Cai
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Honglin Wu
- Department of Cardiology, Provincial Clinical Medicine College of Fujian Medical University, Fuzhou, China
| | - Xiaomeng Ren
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Lei Gao
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Jiancheng Zhang
- Department of Cardiology, Provincial Clinical Medicine College of Fujian Medical University, Fuzhou, China
| | - Yang Li
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
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11
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Zheng P, Li S, Liu C, Zha Z, Wei X, Yuan Y. Mitochondrial tRNA Ala C5601T mutation may modulate the clinical expression of tRNA Met A4435G mutation in a Han Chinese family with hypertension. Clin Exp Hypertens 2017; 40:595-600. [PMID: 29211511 DOI: 10.1080/10641963.2017.1411497] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Mutations in mitochondrial DNA, especially in mitochondrial tRNA (mt-tRNA) genes, are the important causes for maternally inherited hypertension. In this study, we reported the clinical, genetic, and molecular characterization of a Han Chinese family with hypertension. Most strikingly, this family exhibited a high penetrance and expressivity of hypertension. Sequence analysis of the complete mt-tRNA genes showed the presence of tRNAMet A4435G and tRNAAla C5601T mutations. The A4435G had already been reported as a pathogenic mutation associated with hypertension; in addition, the C5601T mutation, which was located at the highly conserved nucleotide of T arm of tRNAAla, created a novel Watson-Crick base pairing and may result in failure of tRNA metabolism. Moreover, bioinformatics analysis indicated that the C5601T mutation altered the secondary structure of tRNAAla. Thus, the mitochondrial dysfunction, caused by the A4435G mutation, may be worsened by the C5601T mutation. Taken together, our data indicated that the co-occurrence of the A4435G and C5601T mutations may account for the high penetrance and expressivity of hypertension in this family. Therefore, our study provided novel insight into the pathophysiology of maternally inherited hypertension.
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Affiliation(s)
- Ping Zheng
- a Department of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College , Huazhong University of Science and Technology , Wuhan China
| | - Shiliang Li
- a Department of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College , Huazhong University of Science and Technology , Wuhan China
| | - Chun Liu
- a Department of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College , Huazhong University of Science and Technology , Wuhan China
| | - Zhengbiao Zha
- a Department of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College , Huazhong University of Science and Technology , Wuhan China
| | - Xiang Wei
- a Department of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College , Huazhong University of Science and Technology , Wuhan China
| | - Yuan Yuan
- b Department of Ultrasound , Delta Health Hospital Shanghai , Shanghai , China
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Chen X, Wang D, Xiang H, Dun W, Brahi DOH, Yin T, Zhao X. Mitochondrial DNA T7719G in tRNA-Lys gene affects litter size in Small-tailed Han sheep. J Anim Sci Biotechnol 2017; 8:31. [PMID: 28405314 PMCID: PMC5385064 DOI: 10.1186/s40104-017-0160-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 03/17/2017] [Indexed: 01/01/2023] Open
Abstract
Background In farm animals, mitochondrial DNA (mtDNA) effect on economic performance remains hot-topic for breeding and genetic selection. Here, 53 maternal lineages of Small-tailed Han sheep were used to investigate the association of mitochondrial DNA variations and the lambing litter size. Results Sequence sweeping of the mitochondrial coding regions discovered 31 non-synonymous mutations, and the association study revealed that T7719G in mtDNA tRNA-Lys gene was associated with litter size (P < 0.05), manifesting 0.29 lambs per litter between the G and T carriers. Furthermore, using the mixed linear model, we assayed the potential association of the ovine litter size and haplogroups and multiple-level mtDNA haplotypes, including general haplotypes, assembled haplotypes of electron transport chain contained sequences (H-ETC), mitochondrial respiratory complex contained sequences (H-MRC) and mitochondrial genes (H-gene, including polypeptide-coding genes, rRNA genes and tRNA genes). The strategy for assembled mitochondrial haplotypes was proposed for the first time in mtDNA association analyses on economic traits, although none of the significant relations could be concluded (P > 0.05). In addition, the nuclear major gene BMPR1B was significantly correlated with litter size in the flock (P < 0.05), however, did not interact with mtDNA T7719G mutation (P > 0.05). Conclusions Our results highlight mutations of ovine mitochondrial coding genes, suggesting T7719G in tRNA-Lys gene be a potentially useful marker for selection of sheep litter size. Electronic supplementary material The online version of this article (doi:10.1186/s40104-017-0160-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaoyong Chen
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China.,Institute of Animal Science and Veterinary of Hebei Province, Baoding, 071000 China
| | - Dan Wang
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Hai Xiang
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Weitao Dun
- Institute of Animal Science and Veterinary of Hebei Province, Baoding, 071000 China
| | - Dave O H Brahi
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Tao Yin
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Xingbo Zhao
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
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Guo L, Yuan Y, Bi R. Mitochondrial DNA mutation m.5512A > G in the acceptor-stem of mitochondrial tRNATrp causing maternally inherited essential hypertension. Biochem Biophys Res Commun 2016; 479:800-807. [DOI: 10.1016/j.bbrc.2016.09.129] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 09/25/2016] [Indexed: 02/06/2023]
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