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Ma Y, Zhou X, Gui M, Yao L, Li J, Chen X, Wang M, Lu B, Fu D. Mitophagy in hypertension-mediated organ damage. Front Cardiovasc Med 2024; 10:1309863. [PMID: 38239871 PMCID: PMC10794547 DOI: 10.3389/fcvm.2023.1309863] [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: 10/08/2023] [Accepted: 12/14/2023] [Indexed: 01/22/2024] Open
Abstract
Hypertension constitutes a pervasive chronic ailment on a global scale, frequently inflicting damage upon vital organs, such as the heart, blood vessels, kidneys, brain, and others. And this is a complex clinical dilemma that requires immediate attention. The mitochondria assume a crucial function in the generation of energy, and it is of utmost importance to eliminate any malfunctioning or surplus mitochondria to uphold intracellular homeostasis. Mitophagy is considered a classic example of selective autophagy, an important component of mitochondrial quality control, and is closely associated with many physiological and pathological processes. The ubiquitin-dependent pathway, facilitated by PINK1/Parkin, along with the ubiquitin-independent pathway, orchestrated by receptor proteins such as BNIP3, NIX, and FUNDC1, represent the extensively investigated mechanisms underlying mitophagy. In recent years, research has increasingly shown that mitophagy plays an important role in organ damage associated with hypertension. Exploring the molecular mechanisms of mitophagy in hypertension-mediated organ damage could represent a critical avenue for future research in the development of innovative therapeutic modalities. Therefore, this article provides a comprehensive review of the impact of mitophagy on organ damage due to hypertension.
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Affiliation(s)
| | | | | | | | | | | | | | - Bo Lu
- Department of Cardiology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Deyu Fu
- Department of Cardiology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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2
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Novel mitochondrial tRNA Leu(UUR) 3261A > g mutation in two pedigrees with essential hypertension. Ir J Med Sci 2022; 192:615-623. [PMID: 35657541 DOI: 10.1007/s11845-022-03039-1] [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: 03/17/2022] [Accepted: 05/24/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Essential hypertension (EH) was associated with mitochondrial tRNA mutations. AIMS This study was designed to assess the association between EH and mitochondrial dysfunction. METHODS A total of 30 individuals from two different Chinese families exhibit maternally inherited EH were assessed for genetic, clinical, and biochemical phenotypes pertaining to EH and mitochondrial functionality. These analyses included assessments of tRNALeu(UUR) 3261A > G mutation status, mitochondrial membrane permeability, mitochondria-associated ATP and reactive oxygen species (ROS) generation, and electron transport chain functionality. RESULTS EH was detected in 6 total analyzed members of the two families assessed in the present study, with its initial age of onset and presentation varying among patients. These patients with EH exhibited the tRNALeu(UUR) 3261A > G mutation and were of the B5 and D4 Eastern Asian mitochondrial haplogroups. This 3261A > G mutation was predicted to result in disruption of normal tRNALeu(UUR) activity owing to the destabilization of conserved base pairing (30A-40U). Consistent with this prediction, we found that cybrid cell lines exhibiting this 3261A > G mutation exhibited a ~49.05% decrease in baseline tRNALeu(UUR) levels. These cells additionally exhibited ~44.81% reductions in rates of mitochondrial translation. CONCLUSIONS To facilitate future molecular diagnosis, the 3261A > G mutation should be included in the list of hereditary risk factors. Our findings will aid in the counseling of EH families.
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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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Guo H, Guo L, Yuan Y, Liang XY, Bi R. Co-occurrence of m.15992A>G and m.15077G>A Is Associated With a High Penetrance of Maternally Inherited Hypertension in a Chinese Pedigree. Am J Hypertens 2022; 35:96-102. [PMID: 34346491 DOI: 10.1093/ajh/hpab123] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/25/2021] [Accepted: 08/03/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Mitochondrial DNA (mtDNA) pathogenic variants have been identified to be associated with maternally inherited essential hypertension (MIEH). However, the distinctive clinical features and molecular pathogenesis of MIEH are not fully understood. METHODS In this study, we collected a Chinese MIEH family with extraordinary higher penetrance of essential hypertension (88.89%) and early ages of onset (31-40 years old), and performed clinical and genetic characterization for this family. The complete mitochondrial genome of the proband was sequenced and analyzed. RESULTS The maternally related members in this family were presented with severe increased blood pressure, left ventricular remodeling, and metabolic abnormalities. Through sequencing the entire mtDNA of the proband and performing systematic analysis of the mtDNA variants with a phylogenic approach, we identified a potentially pathogenic tRNA variant (m.15992A>G in the MT-TP gene) that may account for the MIEH in this family. One nonsynonymous variant (m.15077G>A in the MT-CYB gene) was identified to play a synergistic role with m.15992A>G to cause a high penetrance of MIEH. CONCLUSIONS Our results, together with previous findings, have indicated that tRNA pathogenic variants in the mtDNA could act important roles in the pathogenesis of MIEH through reducing mitochondrial translation and disturbing mitochondrial function.
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Affiliation(s)
- Hao Guo
- Department of Cardiology, 1st Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Cardiology, Yunnan Key Laboratory of Laboratory Medicine, Kunming, Yunnan, China
| | - Li Guo
- Department of Radiology, 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yong Yuan
- Department of emergency, 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xin-yue Liang
- Department of Cardiology, 1st Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Cardiology, Graduate School of the Kunming Medical University, Kunming, China
| | - Rui Bi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, and KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
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5
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Jia Q, Xu L, Shen J, Wei Y, Xu H, Shi J, Jia Z, Zhao X, Liu C, Zhong Q, Tian Y, He K. Detecting Rare Variants and Heteroplasmy of Mitochondrial DNA from High-Throughput Sequencing in Patients with Coronary Artery Disease. Med Sci Monit 2020; 26:e925401. [PMID: 33132382 PMCID: PMC7646198 DOI: 10.12659/msm.925401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Although mutations and dysfunction of mitochondrial DNA (mtDNA) are related to a variety of diseases, few studies have focused on the relationship between mtDNA and coronary artery disease (CAD), especially the relationship between rare variants and CAD. Material/Methods Two-stage high-throughput sequencing was performed to detect mtDNA variants or heteroplasmy and the relationship between them and CAD phenotypes. In the discovery stage, mtDNA was analyzed by high-throughput sequencing of long-range PCR products generated from the peripheral blood of 85 CAD patients and 80 demographically matched controls. In the validation stage, high-throughput sequencing for mtDNA target regions captured by GenCap Kit was performed on 100 CAD samples and 100 controls. Finally, tRNA fine mapping was performed between our study and the reported Chinese CAD study. Results Among the tRNA genes, we confirmed a highly conserved rare variant, A5592G, previously reported in the Chinese CAD study, and 2 novel rare mutations that reached Bonferroni’s correction significance in the combined analysis were found (P=7.39×10−4 for T5628C in tRNAAla and P=1.01×10−5 for T681C in 12S rRNA) in the CAD study. Both of them were predicted to be pathological, with T5628C disrupting an extremely conservative base-pairing at the AC stem of tRNAAla. Furthermore, we confirmed the controversial issue that the number of non-synonymous heteroplasmic sites per sample was significantly higher in CAD patients. Conclusions In conclusion, our study confirmed the contribution of rare variants in CAD and showed that CAD patients had more non-synonymous heterogeneity mutations, which may be helpful in identifying the genetic and molecular basis of CAD.
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Affiliation(s)
- Qian Jia
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Lu Xu
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Juan Shen
- BGI Genomics, Shenzhen, Guangdong, China (mainland)
| | - Yanping Wei
- BGI Genomics, Shenzhen, Guangdong, China (mainland)
| | - Huaiqian Xu
- BGI Genomics, Shenzhen, Guangdong, China (mainland)
| | - Jinlong Shi
- Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Zhilong Jia
- Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Xiaojing Zhao
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Chunlei Liu
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Qin Zhong
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Yaping Tian
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Kunlun He
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
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6
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Peng W, Zhong Y, Zhao X, Yuan J. Low penetrance of hearing loss in two Chinese families carrying the mitochondrial tRNASer(UCN) mutations. Mol Med Rep 2020; 22:77-86. [PMID: 32377700 PMCID: PMC7248462 DOI: 10.3892/mmr.2020.11100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 02/20/2020] [Indexed: 01/07/2023] Open
Abstract
Mutations in mitochondrial DNA (mtDNA), especially in mitochondrial 12S rRNA and transfer RNA(tRNA)Ser(UCN) genes, are important causes of non-syndromic hearing loss. However, the molecular mechanism underlying mt-tRNA mutations in clinical hearing impairment are not fully understood. The present study assessed the molecular characterization of two Chinese families with non-syndromic hearing loss, who both exhibited very low penetrance of deafness (9.1 and 12.5% for Family 1 and 2, respectively). Mutational analysis of the complete mtDNA genes identified the presence of cytochrome c oxidase 1/tRNASer(UCN) G7444A and tRNASer(UCN) C7492T mutations, together with polymorphisms belonging to human mitochondrial haplogroup D4 and G2b, respectively. Moreover, the G7444A and C7492T mutations occurred at highly conserved tRNASer(UCN) nucleotides and may cause tRNA metabolism failure, which is involved in mitochondrial translation defects. Therefore, the G7444A and C7492T mutations may lead to the mitochondrial dysfunction that responsible for deafness. However, the absence of any functional variants in Gap junction β-2, Solute Carrier Family 26 Member 4 and TRNA 5-methylaminomethyl-2-thiouridylate methyltransferase suggested that nuclear genes may not play active roles in the occurrence of deafness. In the present study, the observed incomplete penetrance of hearing loss and mild mitochondrial dysfunction indicated that mtDNA G7444A and C7492T mutations are insufficient to produce the deafness phenotype. Therefore, other risk factors such as environmental factors and epigenetic regulation may be involved in the pathogenesis of hearing loss in the families recruited in the present study.
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Affiliation(s)
- Wei Peng
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Yi Zhong
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Xueyan Zhao
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Jie Yuan
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
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Tahmasebi S, Khoutorsky A, Mathews MB, Sonenberg N. Translation deregulation in human disease. Nat Rev Mol Cell Biol 2019; 19:791-807. [PMID: 30038383 DOI: 10.1038/s41580-018-0034-x] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Advances in sequencing and high-throughput techniques have provided an unprecedented opportunity to interrogate human diseases on a genome-wide scale. The list of disease-causing mutations is expanding rapidly, and mutations affecting mRNA translation are no exception. Translation (protein synthesis) is one of the most complex processes in the cell. The orchestrated action of ribosomes, tRNAs and numerous translation factors decodes the information contained in mRNA into a polypeptide chain. The intricate nature of this process renders it susceptible to deregulation at multiple levels. In this Review, we summarize current evidence of translation deregulation in human diseases other than cancer. We discuss translation-related diseases on the basis of the molecular aberration that underpins their pathogenesis (including tRNA dysfunction, ribosomopathies, deregulation of the integrated stress response and deregulation of the mTOR pathway) and describe how deregulation of translation generates the phenotypic variability observed in these disorders.
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Affiliation(s)
- Soroush Tahmasebi
- Goodman Cancer Research Center, McGill University, Montreal, Quebec, Canada. .,Department of Biochemistry, McGill University, Montreal, Quebec, Canada. .,Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA.
| | - Arkady Khoutorsky
- Department of Anesthesia and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Canada
| | - Michael B Mathews
- Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Nahum Sonenberg
- Goodman Cancer Research Center, McGill University, Montreal, Quebec, Canada. .,Department of Biochemistry, McGill University, Montreal, Quebec, Canada.
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Comment on "Proximal Myopathy due to m.5835G>A Mutation in Mitochondrial MT-TY Gene". Case Rep Neurol Med 2019; 2019:3514894. [PMID: 31355027 PMCID: PMC6632500 DOI: 10.1155/2019/3514894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 04/22/2019] [Indexed: 11/18/2022] Open
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Lin L, Cui P, Qiu Z, Wang M, Yu Y, Wang J, Sun Q, Zhao H. The mitochondrial tRNA Ala 5587T>C and tRNA Leu(CUN) 12280A>G mutations may be associated with hypertension in a Chinese family. Exp Ther Med 2018; 17:1855-1862. [PMID: 30783460 DOI: 10.3892/etm.2018.7143] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 12/06/2018] [Indexed: 02/07/2023] Open
Abstract
Hypertension is a very common cardiovascular disorder, however, the molecular mechanism underlying this disease remains poorly understood. Recently, an increasing number of studies have demonstrated that mitochondrial (mt)DNA mutations serve important roles in the pathogenesis of hypertension. The current study reported the clinical and molecular characterization of a Chinese family with maternally inherited hypertension (the penetrance of hypertension was 71.4%). In addition, the entire mitochondrial transfer (mt-t)RNA genomes was amplified using a polymerase chain reaction (PCR) and identified through direct Sanger sequencing. Additionally, the mtDNA copy number in matrilineal relatives in this family was evaluated using quantitative PCR. The sequence analysis of the 22 mt-tRNA genes led to the identification of tRNAAla 5587T>C (thymine to cytosine) and tRNALeu(CUN) 12280A>G (adenine to guanine) mutations. Notably, the heteroplasmic 5587T>C mutation was located at the 3' end of tRNAAla (position 73), which is highly conserved from bacteria to human mitochondria. In addition, the 12280A>G mutation was revealed to occurs at the dihydrouridine loop of tRNALeu(CUN) (position 15) and may decrease the steady-state level of mt-tRNA. As a result, 5587T>C and 12280A>G mutations may lead to the failure of tRNAs metabolism and subsequently cause mitochondrial protein synthesis defects. Molecular analysis revealed that patients carrying the 5587T>C and 12280A>G mutations had a lower copy number of mtDNA compared with a control with hypertension, but without the mutations, suggesting that these mutations may cause mitochondrial dysfunctions that are responsible for hypertension. Therefore, mt-tRNAAla 5587T>C and tRNALeu(CUN) 12280A>G mutations may be involved in the pathogenesis of hypertension in this family.
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Affiliation(s)
- Lin Lin
- Health Examination Department, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Peng Cui
- Multidisciplinary Consultation Center, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Zhipeng Qiu
- Emergency Department, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Min Wang
- Emergency Department, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Yingchao Yu
- Emergency Department, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Jing Wang
- Department of Joint Surgery, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Qian Sun
- Department of Joint Surgery, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Hairong Zhao
- Department of General Medicine, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
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10
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Tseng CC, Chen CJ, Yen JH, Huang HY, Chang JG, Chang SJ, Liao WT. Next-generation sequencing profiling of mitochondrial genomes in gout. Arthritis Res Ther 2018; 20:137. [PMID: 29976239 PMCID: PMC6034246 DOI: 10.1186/s13075-018-1637-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 05/29/2018] [Indexed: 12/16/2022] Open
Abstract
Background Accumulating evidence implicates mitochondrial DNA (mtDNA) alleles, which are independent of the nuclear genome, in disease, especially in human metabolic diseases. However, this area of investigation has lagged behind in researching the nuclear alleles in complex traits, for example, in gout. Methods Next-generation sequencing was utilized to investigate the relationship between mtDNA alleles and phenotypic variations in 52 male patients with gout and 104 age-matched male non-gout controls from the Taiwan Biobank whole-genome sequencing samples. Differences from a reference sequence (GRCh38) were identified. The sequence kernel association test (SKAT) was applied to identify gout-associated alleles in mitochondrial genes. The tools Polymorphism Phenotyping, Sorting Intolerant From Tolerant (SIFT), Predict the pathology of Mutations (PMUT), Human Mitochondrial Genome Database (mtDB), Multiple Alignment using Fast Fourier Transform (MAFFT), and Mammalian Mitochondrial tRNA Genes (Mamit-tRNA) were used to evaluate pathogenicity of alleles. Validation of selected alleles by quantitative polymerase chain reaction of single nucleotide polymorphisms (qPCR SNPs) was also performed. Results We identified 456 alleles in patients with gout and 640 alleles in non-gout controls with 274 alleles shared by both. Mitochondrial genes were associated with gout, with MT-CO3, MT-TA, MT-TC, and MT-TT containing potentially pathogenic gout-associated alleles and displaying evidence of gene-gene interactions. All heteroplasmy levels of potentially pathogenic alleles exceeded metabolic thresholds for pathogenicity. Validation assays confirmed the next-generation sequencing results of selected alleles. Among them, potentially pathogenic MT-CO3 alleles correlated with high-density lipoprotein (HDL) levels (P = 0.034). Conclusion This study provided two scientific insights. First, this was the most extensive mitochondrial genomic profiling associated with gout. Second, our results supported the roles of mitochondria in gout and HDL, and this comprehensive analysis framework can be applied to other diseases in which mitochondrial dysfunction has been implicated. Electronic supplementary material The online version of this article (10.1186/s13075-018-1637-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chia-Chun Tseng
- Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Chung-Jen Chen
- Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Internal Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jeng-Hsien Yen
- Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsi-Yuan Huang
- Department of Laboratory Medicine and Epigenome Research Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Jan-Gowth Chang
- Department of Laboratory Medicine and Epigenome Research Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Shun-Jen Chang
- Department of Kinesiology, Health and Leisure Studies, National University of Kaohsiung, Kaohsiung, Taiwan.
| | - Wei-Ting Liao
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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Fiatal S, Ádány R. Application of Single-Nucleotide Polymorphism-Related Risk Estimates in Identification of Increased Genetic Susceptibility to Cardiovascular Diseases: A Literature Review. Front Public Health 2018; 5:358. [PMID: 29445720 PMCID: PMC5797796 DOI: 10.3389/fpubh.2017.00358] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 12/15/2017] [Indexed: 12/17/2022] Open
Abstract
Background Although largely preventable, cardiovascular diseases (CVDs) are the biggest cause of death worldwide. Common complex cardiovascular disorders (e.g., coronary heart disease, hypertonia, or thrombophilia) result from a combination of genetic alterations and environmental factors. Recent advances in the genomics of CVDs have fostered huge expectations about future use of susceptibility variants for prevention, diagnosis, and treatment. Our aim was to summarize the latest developments in the field from a public health perspective focusing on the applicability of data on single-nucleotide polymorphisms (SNPs), through a systematic review of studies from the last decade on genetic risk estimating for common CVDs. Methods Several keywords were used for searching the PubMed, Embase, CINAHL, and Web of Science databases. Recent advances were summarized and structured according to the main public health domains (prevention, early detection, and treatment) using a framework suggested recently for translational research. This framework includes four recommended phases: “T1. From gene discovery to candidate health applications; T2. From health application to evidence-based practice guidelines; T3. From evidence-based practice guidelines to health practice; and T4. From practice to population health impacts.” Results The majority of translation research belongs to the T1 phase “translation of basic genetic/genomic research into health application”; there are only a few population-based impacts estimated. The studies suggest that an SNP is a poor estimator of individual risk, whereas an individual’s genetic profile combined with non-genetic risk factors may better predict CVD risk among certain patient subgroups. Further research is needed to validate whether these genomic profiles can prospectively identify individuals at risk to develop CVDs. Several research gaps were identified: little information is available on studies suggesting “Health application to evidence-based practice guidelines”; no study is available on “Guidelines to health practice.” It was not possible to identify studies that incorporate environmental or lifestyle factors in the risk estimation. Conclusion Currently, identifying populations having a larger risk of developing common CVDs may result in personalized prevention programs by reducing people’s risk of onset or disease progression. However, limited evidence is available on the application of genomic results in health and public health practice.
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Affiliation(s)
- Szilvia Fiatal
- Department of Preventive Medicine, Faculty of Public Health, University of Debrecen, Debrecen, Hungary.,WHO Collaborating Centre on Vulnerability and Health, Department of Preventive Medicine, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Róza Ádány
- Department of Preventive Medicine, Faculty of Public Health, University of Debrecen, Debrecen, Hungary.,WHO Collaborating Centre on Vulnerability and Health, Department of Preventive Medicine, Faculty of Public Health, University of Debrecen, Debrecen, Hungary.,MTA-DE Public Health Research Group of the Hungarian Academy of Sciences, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
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12
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Zhao Y, Chen X, Li H, Zhu C, Li Y, Liu Y. Mitochondrial genome mutations in 13 subunits of respiratory chain complexes in Chinese Han and Mongolian hypertensive individuals. Mitochondrial DNA A DNA Mapp Seq Anal 2017; 29:1090-1099. [PMID: 29172898 DOI: 10.1080/24701394.2017.1407762] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Mitochondrial DNA (mtDNA) mutations are associated with cardiovascular disease, including hypertension (HTN). Here we performed a genetic and molecular analysis of 13 mtDNA-encoded subunits of respiratory chain complexes in 100 Chinese Han and 80 Mongolian HTN cases, and 100 Han and 42 Mongolian normotension subjects. The total cholesterol of the Mongolian normotensive subjects was higher than that of the Han normotensive group (p < .05). Sequence analysis identified 636 point mutations in the 13 mtDNA-encoded subunits in the Han and Mongolian hypertensive individuals, including 66 in NADH dehydrogenase subunit 1(ND1), 62 in ND2, 71 in COI, 29 in COII, 17 in ATP8, one in ATP6/8, 49 in ATP6, 27 in COIII, 27 in ND3, 14 in ND4L, 74 in ND4, 97 in ND5, 24 in ND6, and 78 in CYTB. Eight of these point mutations were present at significantly different frequencies in Han and Mongolian hypertensive individuals. Thirty-one point mutations were present only in Mongolian hypertensive individuals, while 73 were present only in Han hypertensive individuals. The relation between point mutations in 13 mtDNA-encoded subunits of respiratory chain complexes and HTN is worth to further research in future; however, the functional effects of these mutations require elucidation.
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Affiliation(s)
- Ying Zhao
- a Department of Cardiology , Chinese PLA General Hospital , Beijing , China.,b Outpatient Clinic of General Hospital of China Aviation , Beijing , China
| | - Xi Chen
- a Department of Cardiology , Chinese PLA General Hospital , Beijing , China
| | - Haide Li
- c Department of Cardiology , Yishui Center Hospital of Shandong Province , Linyi , China
| | - Chao Zhu
- a Department of Cardiology , Chinese PLA General Hospital , Beijing , China
| | - Yang Li
- a Department of Cardiology , Chinese PLA General Hospital , Beijing , China.,d Institute of Geriatric Cardiology , Chinese PLA General Hospital , Beijing , China
| | - Yuqi Liu
- a Department of Cardiology , Chinese PLA General Hospital , Beijing , China.,d Institute of Geriatric Cardiology , Chinese PLA General Hospital , Beijing , China
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13
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Zhou M, Wang M, Xue L, Lin Z, He Q, Shi W, Chen Y, Jin X, Li H, Jiang P, Guan MX. A hypertension-associated mitochondrial DNA mutation alters the tertiary interaction and function of tRNA Leu(UUR). J Biol Chem 2017; 292:13934-13946. [PMID: 28679533 DOI: 10.1074/jbc.m117.787028] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 07/03/2017] [Indexed: 01/10/2023] Open
Abstract
Several mitochondrial tRNA mutations have been associated with hypertension, but their pathophysiology remains poorly understood. In this report, we identified a novel homoplasmic 3253T→C mutation in the mitochondrial tRNALeu(UUR) gene in a Han Chinese family with maternally inherited hypertension. The m.3253T→C mutation affected a highly conserved uridine at position 22 at the D-stem of tRNALeu(UUR), introducing a G-C base pairing (G13-C22) at the D-stem and a tertiary base pairing (C22-G46) between the D-stem and the variable loop. We therefore hypothesized that the m.3253T→C mutation altered both the structure and function of tRNALeu(UUR) Using cytoplasmic hybrid (cybrid) cell lines derived from this Chinese family, we demonstrated that the m.3253T→C mutation perturbed the conformation and stability of tRNALeu(UUR), as suggested by faster electrophoretic mobility of mutated tRNA relative to the wild-type molecule. Northern blot analysis revealed an ∼45% decrease in the steady-state level of tRNALeu(UUR) in the mutant cell lines carrying the m.3253T→C mutation, as compared with control cell lines. Moreover, an ∼35% reduction in aminoacylation efficiency of tRNALeu(UUR) was observed in the m.3253T→C mutant cells. These alterations in tRNALeu(UUR) metabolism impaired mitochondrial translation, especially for those polypeptides with a high proportion of Leu(UUR) codons, such as ND6. Furthermore, we demonstrated that the m.3253T→C mutation decreased the activities of mitochondrial complexes I and V, markedly diminished mitochondrial ATP levels and membrane potential, and increased the production of reactive oxygen species in the cells. In conclusion, our findings may provide new insights into the pathophysiology of maternally inherited hypertension.
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Affiliation(s)
- Mi Zhou
- From the Division of Medical Genetics and Genomics, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, Zhejiang, China,; Institute of Genetics and Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Meng Wang
- From the Division of Medical Genetics and Genomics, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, Zhejiang, China,; Institute of Genetics and Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Ling Xue
- Attardi Institute of Mitochondrial Biomedicine, Wenzhou Medical University, Wenzhou 325600, Zhejiang, China
| | - Zhi Lin
- Attardi Institute of Mitochondrial Biomedicine, Wenzhou Medical University, Wenzhou 325600, Zhejiang, China
| | - Qiufen He
- Institute of Genetics and Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Wenwen Shi
- Attardi Institute of Mitochondrial Biomedicine, Wenzhou Medical University, Wenzhou 325600, Zhejiang, China
| | - Yaru Chen
- Attardi Institute of Mitochondrial Biomedicine, Wenzhou Medical University, Wenzhou 325600, Zhejiang, China
| | - Xiaofen Jin
- Institute of Genetics and Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Haiying Li
- Department of Cardiology, First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325600, Zhejiang, China
| | - Pingping Jiang
- From the Division of Medical Genetics and Genomics, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, Zhejiang, China,; Institute of Genetics and Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Min-Xin Guan
- From the Division of Medical Genetics and Genomics, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, Zhejiang, China,; Institute of Genetics and Zhejiang University, Hangzhou 310058, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310058, Zhejiang, China,; Joint Institute of Genetics and Genomic Medicine between Zhejiang University and University of Toronto, Hangzhou 310058, Zhejiang, China.
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14
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Liu Y, Li Y, Zhu C, Tian L, Guan M, Chen Y. Mitochondrial biogenesis dysfunction and metabolic dysfunction from a novel mitochondrial tRNA Met 4467 C>A mutation in a Han Chinese family with maternally inherited hypertension. Sci Rep 2017; 7:3034. [PMID: 28596595 PMCID: PMC5465199 DOI: 10.1038/s41598-017-03303-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 04/13/2017] [Indexed: 11/21/2022] Open
Abstract
To investigate the relationship between mitochondrial DNA (mtDNA) and hypertension as well as the mechanism involved in mitochondrial metabolic dysfunction. We identified a novel tRNAMet C4467A mutation in a Han Chinese family with hypertension. The maternal members presented with increased glucose, total cholesterol, low-density lipoprotein, and serum sodium as well as decreased potassium compared with non-maternal members (P < 0.05). Segregation analysis showed this mutation was maternally inherited. We analyzed lymphocyte cell lines derived from three maternal and three non-maternal family members. Reactive oxygen species production in the mutant cell lines was 114.5% higher compared with that in controls (P < 0.05) while ATP was 26.4% lower. The mitochondrial membrane potential of the mutated cell lines was 26.2% lower than that in controls (P < 0.05). Oxygen consumption rates were decreased in the mutant cell lines (P < 0.05). The activation of caspase-3/7 was 104.1% higher in the mutant cell lines compared with controls (P < 0.05). The expression of voltage-dependent anion channel (VDAC), Bax and apoptosis-inducing factor (AIF) in the mutant cell lines was higher compared with that in controls, with the increased colocalization of VDAC and Bax. Therefore, this mutation contributes to oxidative stress and mitochondrial biogenesis dysfunction, which may be involved in the pathogenesis of hypertension.
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Affiliation(s)
- Yuqi Liu
- Cardiac department of Chinese PLA General Hospital, Beijing, 100853, China
| | - Yang Li
- Cardiac department of Chinese PLA General Hospital, Beijing, 100853, China
- Institute of Geriatric Cardiology of Chinese PLA General Hospital, Beijing, 100853, China
| | - Chao Zhu
- Cardiac department of Chinese PLA General Hospital, Beijing, 100853, China
| | - Liuyang Tian
- Cardiac department of People's Hospital of Tianjing, Tianjing, 300121, China
| | - Minxin Guan
- Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University, School of Medicine, Hangzhou, Zhejiang, 310058, China.
| | - Yundai Chen
- Cardiac department of Chinese PLA General Hospital, Beijing, 100853, China.
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