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Tamvaka N, Heckman MG, Johnson PW, Soto-Beasley AI, Walton RL, Koga S, Uitti RJ, Parfitt F, Graff-Radford MR, Wszolek ZK, Graff-Radford N, Valentino RR, Ross OA. Associations of mitochondrial genomic variation with successful neurological aging. Mitochondrion 2024; 78:101948. [PMID: 39179138 DOI: 10.1016/j.mito.2024.101948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 07/25/2024] [Accepted: 08/18/2024] [Indexed: 08/26/2024]
Abstract
Mitochondrial health is an integral factor in aging, with mitochondrial dysfunction known to increase with age and contribute to the development of age-related neurodegenerative disorders. Additionally, the mitochondrial genome (mtDNA) has been shown to acquire potentially damaging somatic variation as part of the aging process, while mtDNA single nucleotide polymorphism (SNPs) have been shown to be both protective and detrimental for various neurodegenerative diseases. Yet, little is known about the involvement of mtDNA variation in longevity and successful neurological aging. In this study, we examined the association of mtDNA SNPs, in the form of mitochondrial haplogroups, with successful neurological aging in 1,405 unrelated neurologically healthy subjects. Although not quite significant after correcting for multiple testing (P < 0.0017 considered as significant), we detected a nominally significant association between the I haplogroup (N = 45, 3.2 %) and a younger age (β: -5.00, P = 0.006), indicating that this haplogroup is observed less frequently in older neurologically healthy individuals and may be associated with decreased survival. Replication of this finding in independent neurologically healthy cohorts will be imperative for shaping our understanding of the biological processes underlying healthy neurological aging.
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Affiliation(s)
- Nicole Tamvaka
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Mayo Graduate School, Neuroscience Track, Mayo Clinic, Jacksonville, FL, USA
| | - Michael G Heckman
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Patrick W Johnson
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Ronald L Walton
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Shunsuke Koga
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Ryan J Uitti
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Francine Parfitt
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | | | | | | | - Owen A Ross
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Mayo Graduate School, Neuroscience Track, Mayo Clinic, Jacksonville, FL, USA; Department of Clinical Genomics, Mayo Clinic, Jacksonville, FL 32224, USA; Department of Biology, University of North Florida, Jacksonville, FL 32224, USA; Department of Medicine, University College Dublin, Dublin, Ireland.
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2
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Tao B, Gong W, Xu C, Ma Z, Mei J, Chen M. The relationship between hypoxia and Alzheimer's disease: an updated review. Front Aging Neurosci 2024; 16:1402774. [PMID: 39086755 PMCID: PMC11288848 DOI: 10.3389/fnagi.2024.1402774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 07/04/2024] [Indexed: 08/02/2024] Open
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases, and the most prevalent form of dementia. The main hallmarks for the diagnosis of AD are extracellular amyloid-beta (Aβ) plaque deposition and intracellular accumulation of highly hyperphosphorylated Tau protein as neurofibrillary tangles. The brain consumes more oxygen than any other organs, so it is more easily to be affected by hypoxia. Hypoxia has long been recognized as one of the possible causes of AD and other neurodegenerative diseases, but the exact mechanism has not been clarified. In this review, we will elucidate the connection between hypoxia-inducible factors-1α and AD, including its contribution to AD and its possible protective effects. Additionally, we will discuss the relationship between oxidative stress and AD as evidence show that oxidative stress acts on AD-related pathogenic factors such as mitochondrial dysfunction, Aβ deposition, inflammation, etc. Currently, there is no cure for AD. Given the close association between hypoxia, oxidative stress, and AD, along with current research on the protective effects of antioxidants against AD, we speculate that antioxidants could be a potential therapeutic approach for AD and worth further study.
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Affiliation(s)
- Borui Tao
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Wei Gong
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Chengyuan Xu
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Zhihui Ma
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Jinyu Mei
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ming Chen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
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3
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Giannoulis SV, Müller D, Kennedy JL, Gonçalves V. Systematic review of mitochondrial genetic variation in attention-deficit/hyperactivity disorder. Eur Child Adolesc Psychiatry 2024; 33:1675-1685. [PMID: 35796884 DOI: 10.1007/s00787-022-02030-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 06/20/2022] [Indexed: 11/03/2022]
Abstract
The global prevalence of attention-deficit/hyperactivity disorder (ADHD) is estimated to be between 6% and 7% in children worldwide. The pathophysiology of this heterogeneous neurodevelopmental disorder remains unknown. Mitochondrial dysfunction has been proposed as a possible contributing factor to the etiology of ADHD. There is limited literature available to help our understanding of this hypothesis, and thus we conducted a systematic review of the number and quality of studies pertaining to mitochondrial genetic alterations in ADHD. A systematic search was conducted in the relevant databases Medline (PubMed) and Embase up to March 2021. Inclusion criteria included randomized control trials, cross-sectional studies, and case-control studies. This search resulted in a total of 507 articles that emerged from the search criteria. Of these results, 10 primary research articles were selected for in depth review based on the inclusion and exclusion criteria. These studies all reported on mitochondrial genetic variation in ADHD cases such as increased copy number, single-nucleotide polymorphisms, and haplogroup associations. This initial review of the experimental literature suggests mitochondrial genetic variation, in both the mitochondrial DNA and nuclear-encoded mitochondrial genes, may indeed contribute to ADHD pathophysiology. The studies reviewed here provide promising evidence for future research to further examine the mitochondrial genetics contributing to ADHD pathophysiology. We suggest that expansion of investigations into mitochondrial mechanisms may have potential to inform new treatment options for ADHD.
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Affiliation(s)
- Stavroula V Giannoulis
- Molecular Brain Science Research Department, Tannenbaum Centre for Pharmacogenetics, Centre for Addiction and Mental Health, Neurogenetics Section, Campbell Family Mental Health Research Institute, 250 College Street, Toronto, ON, M5T 1R8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - Daniel Müller
- Molecular Brain Science Research Department, Tannenbaum Centre for Pharmacogenetics, Centre for Addiction and Mental Health, Neurogenetics Section, Campbell Family Mental Health Research Institute, 250 College Street, Toronto, ON, M5T 1R8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - James L Kennedy
- Molecular Brain Science Research Department, Tannenbaum Centre for Pharmacogenetics, Centre for Addiction and Mental Health, Neurogenetics Section, Campbell Family Mental Health Research Institute, 250 College Street, Toronto, ON, M5T 1R8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Vanessa Gonçalves
- Molecular Brain Science Research Department, Tannenbaum Centre for Pharmacogenetics, Centre for Addiction and Mental Health, Neurogenetics Section, Campbell Family Mental Health Research Institute, 250 College Street, Toronto, ON, M5T 1R8, Canada.
- Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada.
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
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4
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Hernández CL. Mitochondrial DNA in Human Diversity and Health: From the Golden Age to the Omics Era. Genes (Basel) 2023; 14:1534. [PMID: 37628587 PMCID: PMC10453943 DOI: 10.3390/genes14081534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Mitochondrial DNA (mtDNA) is a small fraction of our hereditary material. However, this molecule has had an overwhelming presence in scientific research for decades until the arrival of high-throughput studies. Several appealing properties justify the application of mtDNA to understand how human populations are-from a genetic perspective-and how individuals exhibit phenotypes of biomedical importance. Here, I review the basics of mitochondrial studies with a focus on the dawn of the field, analysis methods and the connection between two sides of mitochondrial genetics: anthropological and biomedical. The particularities of mtDNA, with respect to inheritance pattern, evolutionary rate and dependence on the nuclear genome, explain the challenges of associating mtDNA composition and diseases. Finally, I consider the relevance of this single locus in the context of omics research. The present work may serve as a tribute to a tool that has provided important insights into the past and present of humankind.
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Affiliation(s)
- Candela L Hernández
- Department of Biodiversity, Ecology and Evolution, Faculty of Biological Sciences, Complutense University of Madrid, 28040 Madrid, Spain
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5
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Delivery Systems for Mitochondrial Gene Therapy: A Review. Pharmaceutics 2023; 15:pharmaceutics15020572. [PMID: 36839894 PMCID: PMC9964608 DOI: 10.3390/pharmaceutics15020572] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/26/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023] Open
Abstract
Mitochondria are membrane-bound cellular organelles of high relevance responsible for the chemical energy production used in most of the biochemical reactions of cells. Mitochondria have their own genome, the mitochondrial DNA (mtDNA). Inherited solely from the mother, this genome is quite susceptible to mutations, mainly due to the absence of an effective repair system. Mutations in mtDNA are associated with endocrine, metabolic, neurodegenerative diseases, and even cancer. Currently, therapeutic approaches are based on the administration of a set of drugs to alleviate the symptoms of patients suffering from mitochondrial pathologies. Mitochondrial gene therapy emerges as a promising strategy as it deeply focuses on the cause of mitochondrial disorder. The development of suitable mtDNA-based delivery systems to target and transfect mammalian mitochondria represents an exciting field of research, leading to progress in the challenging task of restoring mitochondria's normal function. This review gathers relevant knowledge on the composition, targeting performance, or release profile of such nanosystems, offering researchers valuable conceptual approaches to follow in their quest for the most suitable vectors to turn mitochondrial gene therapy clinically feasible. Future studies should consider the optimization of mitochondrial genes' encapsulation, targeting ability, and transfection to mitochondria. Expectedly, this effort will bring bright results, contributing to important hallmarks in mitochondrial gene therapy.
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6
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Yan Y, Zhou Q, Ran X, Lu Q, Zhang C, Peng M, Tang L, Luo R, Di Y, Hao X. Jatrophane Diterpenoids from Euphorbia peplus Linn. as Activators of Autophagy and Inhibitors of Tau Pathology. Int J Mol Sci 2023; 24:ijms24021088. [PMID: 36674604 PMCID: PMC9863522 DOI: 10.3390/ijms24021088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/12/2022] [Accepted: 12/26/2022] [Indexed: 01/09/2023] Open
Abstract
Ten jatrophane diterpenoids were isolated from the whole plant Euphorbia peplus Linn. including seven new ones, named euphjatrophanes A-G (labeled compounds 1, 2, 4-8). Their structures were elucidated with a combination of spectroscopic and single-crystal X-ray crystallography, enabling the identification of compounds 3, 9, and 10 as the previously published euphpepluones G, K, and L, respectively. All compounds were evaluated for their bioactivity with flow cytometry in assays of autophagic flux in HM Cherry-GFP-LC3 (human microglia cells stably expressing the tandem monomeric mCherry-GFP-tagged LC3) cells. Euphpepluone K (9) significantly activated autophagic flux, an effect that was verified with confocal analysis. Moreover, cellular assays showed that euphpepluone K (9) induced autophagy and inhibited Tau pathology.
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Affiliation(s)
- Ying Yan
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Qi Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Xiaoqian Ran
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
- 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 650204, China
| | - Qingyun Lu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Cuishan Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Mingyou Peng
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Rongcan Luo
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
- 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 650204, China
- Correspondence: (R.L.); (Y.D.)
| | - Yingtong Di
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
- Correspondence: (R.L.); (Y.D.)
| | - Xiaojiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
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7
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Faria R, Albuquerque T, Neves AR, Sousa Â, Costa DRB. Nanotechnology to Correct Mitochondrial Disorders in Cancer Diseases. Cancer Nanotechnol 2023. [DOI: 10.1007/978-3-031-17831-3_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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8
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Mitochondrial DNA Repair in Neurodegenerative Diseases and Ageing. Int J Mol Sci 2022; 23:ijms231911391. [PMID: 36232693 PMCID: PMC9569545 DOI: 10.3390/ijms231911391] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
Mitochondria are the only organelles, along with the nucleus, that have their own DNA. Mitochondrial DNA (mtDNA) is a double-stranded circular molecule of ~16.5 kbp that can exist in multiple copies within the organelle. Both strands are translated and encode for 22 tRNAs, 2 rRNAs, and 13 proteins. mtDNA molecules are anchored to the inner mitochondrial membrane and, in association with proteins, form a structure called nucleoid, which exerts a structural and protective function. Indeed, mitochondria have evolved mechanisms necessary to protect their DNA from chemical and physical lesions such as DNA repair pathways similar to those present in the nucleus. However, there are mitochondria-specific mechanisms such as rapid mtDNA turnover, fission, fusion, and mitophagy. Nevertheless, mtDNA mutations may be abundant in somatic tissue due mainly to the proximity of the mtDNA to the oxidative phosphorylation (OXPHOS) system and, consequently, to the reactive oxygen species (ROS) formed during ATP production. In this review, we summarise the most common types of mtDNA lesions and mitochondria repair mechanisms. The second part of the review focuses on the physiological role of mtDNA damage in ageing and the effect of mtDNA mutations in neurodegenerative disorders such as Alzheimer’s and Parkinson’s disease. Considering the central role of mitochondria in maintaining cellular homeostasis, the analysis of mitochondrial function is a central point for developing personalised medicine.
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9
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Chen ZN, Liu FW, Bai LP, Jin CX, Li XT, Yang WX, Zhang SH, Zhang L, Wei J, Zhou TC. Mitochondrial DNA haplogroup F confers genetic susceptibility to chronic HBV infection for the Yi nationality in Lijiang, China. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2022; 101:105293. [PMID: 35504588 DOI: 10.1016/j.meegid.2022.105293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 06/14/2023]
Abstract
Mitochondria are essential for hepatitis B virus (HBV) infection. Moreover, the findings of our previous study indicate that host mitochondrial genetic factors are associated with chronic hepatitis B (CHB) for the Han Chinese. However, in terms of genetic heterogeneity, the impact of mitochondria on host susceptibility to HBV infection in ethnic minorities in China remains unclear. Here, a total of 7070 subjects who had visited the hospital between June 1, 2019, and April 31, 2020, were enrolled for seroprevalence of HBV infection investigation. A total of 220 individuals with CHB (CHBs) and 223 individuals with a trace of HBV infection (spontaneously recovered subjects, SRs) were analyzed for mitochondrial DNA (mtDNA) sequence variations and classified into respective haplogroups. Haplogroup frequencies were compared between CHBs and SRs. Among eight nationalities, Yi nationality patients had the highest HBsAg prevalence rate (27.9% [95% CI: 25.3%-30.5%]) and the lowest vaccination rate (4.9% [95% CI: 3.7%-6.2%]). After adjustment for age and gender, haplogroup F was a risk factor for CHB infection (P = 0.049, OR = 2.079, 95% CI = 1.002-4.31), while D4 had a significant negative correlation with the HBeAg-positive rate (P = 0.024, OR = 0.215, 95% CI = 0.057-0.816). Together with our previous study, the findings indicate that different nationalities have different genetic susceptibility to HBV infection.
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Affiliation(s)
- Zong-Ning Chen
- Lijiang People's Hospital, Lijiang City, Yunnan Province, China
| | - Feng-Wei Liu
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China
| | - Li-Ping Bai
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China
| | - Chao-Xian Jin
- People's Hospital of Gucheng District, Lijiang City, Yunnan Province, China
| | - Xing-Tong Li
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China
| | - Wen-Xiu Yang
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China
| | - Si-Hang Zhang
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China
| | - Liang Zhang
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China
| | - Jia Wei
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China.
| | - Tai-Cheng Zhou
- Central Lab, Liver Disease Research Center, The Affiliated Hospital of Yunnan University, Kunming City, Yunnan Province, China.
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10
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Lima T, Li TY, Mottis A, Auwerx J. Pleiotropic effects of mitochondria in aging. NATURE AGING 2022; 2:199-213. [PMID: 37118378 DOI: 10.1038/s43587-022-00191-2] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/07/2022] [Indexed: 04/30/2023]
Abstract
Aging is typified by a progressive decline in mitochondrial activity and stress resilience. Here, we review how mitochondrial stress pathways have pleiotropic effects on cellular and systemic homeostasis, which can comprise protective or detrimental responses during aging. We describe recent evidence arguing that defects in these conserved adaptive pathways contribute to aging and age-related diseases. Signaling pathways regulating the mitochondrial unfolded protein response, mitochondrial membrane dynamics, and mitophagy are discussed, emphasizing how their failure contributes to heteroplasmy and de-regulation of key metabolites. Our current understanding of how these processes are controlled and interconnected explains how mitochondria can widely impact fundamental aspects of aging.
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Affiliation(s)
- Tanes Lima
- Laboratory of Integrative Systems Physiology, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Terytty Yang Li
- Laboratory of Integrative Systems Physiology, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Adrienne Mottis
- Laboratory of Integrative Systems Physiology, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
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11
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Mitochondrial DNA and Alzheimer's disease: a first case-control study of the Tunisian population. Mol Biol Rep 2021; 49:1687-1700. [PMID: 34854014 DOI: 10.1007/s11033-021-06978-7] [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: 10/11/2021] [Accepted: 11/17/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common neurodegenerative disorder in humans and presents a major health problem throughout the world. The etiology of AD is complex, and many factors are implicated, including mitochondria. Mitochondrial alteration has been proposed as a possible cause of AD. Therefore, several studies have focused on finding an association between inherited mitochondrial DNA variants and AD onset. METHODS In this study, we looked, for the first time, for a potential association between mitochondrial haplogroups or polymorphisms and AD in the Tunisian population. We also evaluated the distribution of the major genetic risk factor for AD, the apolipoprotein E epsilon 4 (APOE ε4), in this population. In total, 159 single-nucleotide polymorphisms (SNPs) of mitochondrial DNA haplogroups were genotyped in 254 individuals (58 patients and 196 controls). An additional genotyping of APOE ε4 was performed. RESULTS No significant association between mitochondrial haplogroups and AD was found. However, two individual SNPs, A5656G (p = 0.03821, OR = 10.46) and A13759G (p = 0.03719, OR = 10.78), showed a significant association with AD. APOE 4 was confirmed as a risk factor for AD (p = 0.000014). CONCLUSION Our findings may confirm the absence of a relation between mitochondrial haplogroups and AD and support the possible involvement of some inherited variants in the pathogenicity of AD.
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12
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Cai N, Gomez-Duran A, Yonova-Doing E, Kundu K, Burgess AI, Golder ZJ, Calabrese C, Bonder MJ, Camacho M, Lawson RA, Li L, Williams-Gray CH, Di Angelantonio E, Roberts DJ, Watkins NA, Ouwehand WH, Butterworth AS, Stewart ID, Pietzner M, Wareham NJ, Langenberg C, Danesh J, Walter K, Rothwell PM, Howson JMM, Stegle O, Chinnery PF, Soranzo N. Mitochondrial DNA variants modulate N-formylmethionine, proteostasis and risk of late-onset human diseases. Nat Med 2021; 27:1564-1575. [PMID: 34426706 DOI: 10.1038/s41591-021-01441-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 06/15/2021] [Indexed: 02/02/2023]
Abstract
Mitochondrial DNA (mtDNA) variants influence the risk of late-onset human diseases, but the reasons for this are poorly understood. Undertaking a hypothesis-free analysis of 5,689 blood-derived biomarkers with mtDNA variants in 16,220 healthy donors, here we show that variants defining mtDNA haplogroups Uk and H4 modulate the level of circulating N-formylmethionine (fMet), which initiates mitochondrial protein translation. In human cytoplasmic hybrid (cybrid) lines, fMet modulated both mitochondrial and cytosolic proteins on multiple levels, through transcription, post-translational modification and proteolysis by an N-degron pathway, abolishing known differences between mtDNA haplogroups. In a further 11,966 individuals, fMet levels contributed to all-cause mortality and the disease risk of several common cardiovascular disorders. Together, these findings indicate that fMet plays a key role in common age-related disease through pleiotropic effects on cell proteostasis.
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Affiliation(s)
- Na Cai
- Human Genetics Department, Wellcome Sanger Institute (WT), Hinxton, UK.,European Bioinformatics Institute (EMBL-EBI), Hinxton, UK.,Helmholtz Pioneer Campus, Helmholtz Zentrum München, Neuherberg, Germany
| | - Aurora Gomez-Duran
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.,Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.,Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIB-CSIC), Madrid, Spain
| | - Ekaterina Yonova-Doing
- British Heart Foundation Cardiovascular Epidemiology Unit, Department of Primary Public Health and Primary Care, University of Cambridge, Cambridge, UK.,Department of Genetics, Novo Nordisk Research Centre Oxford, Oxford, UK
| | - Kousik Kundu
- Human Genetics Department, Wellcome Sanger Institute (WT), Hinxton, UK
| | - Annette I Burgess
- Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Zoe J Golder
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.,Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Claudia Calabrese
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.,Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Marc J Bonder
- European Bioinformatics Institute (EMBL-EBI), Hinxton, UK.,Division of Computational Genomics and Systems Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Marta Camacho
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Rachael A Lawson
- Translational and Clinical Research Institute, Newcastle University, Newcastle, UK
| | - Lixin Li
- Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Caroline H Williams-Gray
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | | | - Emanuele Di Angelantonio
- British Heart Foundation Cardiovascular Epidemiology Unit, Department of Primary Public Health and Primary Care, University of Cambridge, Cambridge, UK.,British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, UK.,National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, University of Cambridge, Cambridge, UK.,Health Data Research UK Cambridge, Wellcome Genome Campus and University of Cambridge, Cambridge, UK
| | - David J Roberts
- National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, University of Cambridge, Cambridge, UK.,NHS Blood and Transplant-Oxford Centre, John Radcliffe Hospital, Oxford, UK.,Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Nick A Watkins
- NHS Blood and Transplant, Cambridge Biomedical Campus, Cambridge, UK
| | - Willem H Ouwehand
- Human Genetics Department, Wellcome Sanger Institute (WT), Hinxton, UK.,British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, UK.,NHS Blood and Transplant, Cambridge Biomedical Campus, Cambridge, UK.,Department of Haematology, University of Cambridge, Cambridge, UK
| | - Adam S Butterworth
- British Heart Foundation Cardiovascular Epidemiology Unit, Department of Primary Public Health and Primary Care, University of Cambridge, Cambridge, UK.,British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, UK.,National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, University of Cambridge, Cambridge, UK.,Health Data Research UK Cambridge, Wellcome Genome Campus and University of Cambridge, Cambridge, UK
| | | | - Maik Pietzner
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Nick J Wareham
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | | | - John Danesh
- Human Genetics Department, Wellcome Sanger Institute (WT), Hinxton, UK.,British Heart Foundation Cardiovascular Epidemiology Unit, Department of Primary Public Health and Primary Care, University of Cambridge, Cambridge, UK.,British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, UK.,National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, University of Cambridge, Cambridge, UK.,Health Data Research UK Cambridge, Wellcome Genome Campus and University of Cambridge, Cambridge, UK
| | - Klaudia Walter
- Human Genetics Department, Wellcome Sanger Institute (WT), Hinxton, UK
| | - Peter M Rothwell
- Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Joanna M M Howson
- British Heart Foundation Cardiovascular Epidemiology Unit, Department of Primary Public Health and Primary Care, University of Cambridge, Cambridge, UK.,Department of Genetics, Novo Nordisk Research Centre Oxford, Oxford, UK
| | - Oliver Stegle
- European Bioinformatics Institute (EMBL-EBI), Hinxton, UK. .,Division of Computational Genomics and Systems Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany. .,European Molecular Biology Laboratory, Heidelberg, Germany.
| | - Patrick F Chinnery
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK. .,Medical Research Council Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.
| | - Nicole Soranzo
- Human Genetics Department, Wellcome Sanger Institute (WT), Hinxton, UK. .,British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, UK. .,National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, University of Cambridge, Cambridge, UK. .,Department of Haematology, University of Cambridge, Cambridge, UK. .,Genomics Research Centre, Human Technopole, Milan, Italy.
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13
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A novel missense variant in ACAA1 contributes to early-onset Alzheimer's disease, impairs lysosomal function, and facilitates amyloid-β pathology and cognitive decline. Signal Transduct Target Ther 2021; 6:325. [PMID: 34465723 PMCID: PMC8408221 DOI: 10.1038/s41392-021-00748-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 08/13/2021] [Accepted: 08/18/2021] [Indexed: 02/07/2023] Open
Abstract
Alzheimer's disease (AD) is characterized by progressive synaptic dysfunction, neuronal death, and brain atrophy, with amyloid-β (Aβ) plaque deposits and hyperphosphorylated tau neurofibrillary tangle accumulation in the brain tissue, which all lead to loss of cognitive function. Pathogenic mutations in the well-known AD causal genes including APP, PSEN1, and PSEN2 impair a variety of pathways, including protein processing, axonal transport, and metabolic homeostasis. Here we identified a missense variant rs117916664 (c.896T>C, p.Asn299Ser [p.N299S]) of the acetyl-CoA acyltransferase 1 (ACAA1) gene in a Han Chinese AD family by whole-genome sequencing and validated its association with early-onset familial AD in an independent cohort. Further in vitro and in vivo evidence showed that ACAA1 p.N299S contributes to AD by disturbing its enzymatic activity, impairing lysosomal function, and aggravating the Aβ pathology and neuronal loss, which finally caused cognitive impairment in a murine model. Our findings reveal a fundamental role of peroxisome-mediated lysosomal dysfunction in AD pathogenesis.
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14
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Sukhorukov VS, Mudzhiri NM, Voronkova AS, Baranich TI, Glinkina VV, Illarioshkin SN. Mitochondrial Disorders in Alzheimer's Disease. BIOCHEMISTRY (MOSCOW) 2021; 86:667-679. [PMID: 34225590 DOI: 10.1134/s0006297921060055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Alzheimer's disease is the most common age-related neurodegenerative disease. Understanding of its etiology and pathogenesis is constantly expanding. Thus, the increasing attention of researchers is directed to the study of the role of mitochondrial disorders. In addition, in recent years, the concept of Alzheimer's disease as a stress-induced disease has begun to form more and more actively. The stress-induced damage to the neuronal system can trigger a vicious circle of pathological processes, among which mitochondrial dysfunctions have a significant place, since mitochondria represent a substantial component in the anti-stress activity of the cell. The study of mitochondrial disorders in Alzheimer's disease is relevant for at least two reasons: first, as important pathogenetic component in this disease; second, due to vital role of mitochondria in formation of the body resistance to various conditions, including stressful ones, throughout the life. This literature review analyzes the results of a number of recent studies assessing potential significance of the mitochondrial disorders in Alzheimer's disease. The probable mechanisms of mitochondrial disorders associated with the development of this disease are considered: bioenergetic dysfunctions, changes in mitochondrial DNA (including assessment of the significance of its haplogroup features), disorders in the dynamics of these organelles, oxidative damage to calcium channels, damage to MAM complexes (membranes associated with mitochondria; mitochondria-associated membranes), disruptions of the mitochondrial quality control system, mitochondrial permeability, etc. The issues of the "primary" or "secondary" mitochondrial damage in Alzheimer's disease are discussed. Potentials for the development of new methods for diagnosis and therapy of mitochondrial disorders in Alzheimer's disease are considered.
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Affiliation(s)
| | | | | | - Tatiana I Baranich
- Research Center of Neurology, Moscow, 125367, Russia.,Pirogov Russian National Research Medical University (Pirogov Medical University), Moscow, 117997, Russia
| | - Valeria V Glinkina
- Pirogov Russian National Research Medical University (Pirogov Medical University), Moscow, 117997, Russia
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15
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Ni J, Liu Z, Yuan Y, Li W, Hu Y, Liu P, Hou X, Zhu X, Tang X, Liang M, Zheng S, Hou X, Du J, Tang J, Jiang H, Shen L, Tang B, Wang J. Mitochondrial genome variations are associated with amyotrophic lateral sclerosis in patients from mainland China. J Neurol 2021; 269:805-814. [PMID: 34129120 DOI: 10.1007/s00415-021-10659-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/06/2021] [Accepted: 06/10/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Amyotrophic lateral sclerosis (ALS) is a late-onset neurodegenerative disorder. Mitochondrial dysfunction is involved in the complex pathophysiology of ALS; however, the role of mitochondrial DNA (mtDNA) variants in ALS is poorly understood. We aimed to elucidate the role of mtDNA variants in the pathogenesis of ALS. METHODS The mitochondrial haplogroups of 585 ALS patients and 371 healthy controls were determined; 38 ALS patients and 42 controls underwent long-range polymerase chain reaction combined with next-generation sequencing technology to analyze whole mitochondrial genome variants. RESULTS A higher percentage of variants accumulated in ALS patients than in controls. Analysis of coding region variations that were further stratified by mtDNA genes revealed that nonsynonymous variants were more vulnerable in ALS patients than in controls, particularly in the ND4L, ND5, and ATP8 genes. Moreover, pathogenic nonsynonymous variants tended to over-represent in ALS patients. Unsurprisingly, nonsynonymous variants were not related to the phenotype. Haplogroup analysis did not found evidence of association between haplogroups with the risk of ALS, however, patients belonging to haplogroup Y and M7c were prone to develop later onset of ALS. CONCLUSIONS This is the first study to profile mtDNA variants in ALS patients from mainland China. Our results suggest that an increase in the number of nonsynonymous variants is linked to the pathogenesis of ALS. Moreover, haplogroup Y and M7c may modulate the clinical expression of ALS. Our findings provide independent, albeit limited, evidence for the role of mtDNA in the pathogenesis of ALS.
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Affiliation(s)
- Jie Ni
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Zhen Liu
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Yanchun Yuan
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Wanzhen Li
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Yiting Hu
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Pan Liu
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Xiaorong Hou
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Xiangyu Zhu
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Xuxiong Tang
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Mingyu Liang
- Xiangya School of Medicine, Central South University, Changsha, Hunan, People's Republic of China
| | - Siqi Zheng
- Xiangya School of Medicine, Central South University, Changsha, Hunan, People's Republic of China
| | - Xuan Hou
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Juan Du
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China
| | - Jianguang Tang
- Department of Neurology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Hong Jiang
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410008, People's Republic of China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, People's Republic of China.,National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Lu Shen
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410008, People's Republic of China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, People's Republic of China.,National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410008, People's Republic of China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, People's Republic of China.,National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Junling Wang
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Rd, Changsha, Hunan, People's Republic of China. .,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410008, People's Republic of China. .,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, People's Republic of China. .,National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China.
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16
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Lechuga-Vieco AV, Justo-Méndez R, Enríquez JA. Not all mitochondrial DNAs are made equal and the nucleus knows it. IUBMB Life 2020; 73:511-529. [PMID: 33369015 PMCID: PMC7985871 DOI: 10.1002/iub.2434] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/06/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
The oxidative phosphorylation (OXPHOS) system is the only structure in animal cells with components encoded by two genomes, maternally transmitted mitochondrial DNA (mtDNA), and biparentally transmitted nuclear DNA (nDNA). MtDNA‐encoded genes have to physically assemble with their counterparts encoded in the nucleus to build together the functional respiratory complexes. Therefore, structural and functional matching requirements between the protein subunits of these molecular complexes are rigorous. The crosstalk between nDNA and mtDNA needs to overcome some challenges, as the nuclear‐encoded factors have to be imported into the mitochondria in a correct quantity and match the high number of organelles and genomes per mitochondria that encode and synthesize their own components locally. The cell is able to sense the mito‐nuclear match through changes in the activity of the OXPHOS system, modulation of the mitochondrial biogenesis, or reactive oxygen species production. This implies that a complex signaling cascade should optimize OXPHOS performance to the cellular‐specific requirements, which will depend on cell type, environmental conditions, and life stage. Therefore, the mitochondria would function as a cellular metabolic information hub integrating critical information that would feedback the nucleus for it to respond accordingly. Here, we review the current understanding of the complex interaction between mtDNA and nDNA.
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Affiliation(s)
- Ana Victoria Lechuga-Vieco
- Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain.,MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Raquel Justo-Méndez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
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17
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Sun D, Yao S, Wu F, Deng W, Ma Y, Jin L, Wang J, Wang X. Mitochondrial DNA Haplogroup M7 Confers Disability in a Chinese Aging Population. Front Genet 2020; 11:577795. [PMID: 33193696 PMCID: PMC7645148 DOI: 10.3389/fgene.2020.577795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/06/2020] [Indexed: 12/24/2022] Open
Abstract
Mitochondrial DNA (mtDNA) haplogroups have been associated with functional impairments (i.e., decreased gait speed and grip strength, frailty), which are risk factors of disability. However, the association between mtDNA haplogroups and ADL disability is still unclear. In this study, we conducted an investigation of 25 mtSNPs defining 17 major mtDNA haplogroups for ADL disability in an aging Chinese population. We found that mtDNA haplogroup M7 was associated with an increased risk of disability (OR = 3.18 [95% CI = 1.29-7.83], P = 0.012). The survival rate of the M7 haplogroup group (6.1%) was lower than that of the non-M7 haplogroup group (9.5%) after a 6-year follow-up. In cellular studies, cytoplasmic hybrid (cybrid) cells with the M7 haplogroup showed distinct mitochondrial functions from the M8 haplogroup. Specifically, the respiratory chain complex capacity was significantly lower in M7 haplogroup cybrids than in M8 haplogroup cybrids. Furthermore, an obvious decreased mitochondrial membrane potential and 40% reduced ATP-linked oxygen consumption were found in M7 haplogroup cybrids compared to M8 haplogroup cybrids. Notably, M7 haplogroup cybrids generated more reactive oxygen species (ROS) than M8 haplogroup cybrids. Therefore, the M7 haplogroup may contribute to the risk of disability via altering mitochondrial function to some extent, leading to decreased oxygen consumption, but increased ROS production, which may activate mitochondrial retrograde signaling pathways to impair cellular and tissue function.
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Affiliation(s)
- Dayan Sun
- Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Shun Yao
- Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Psychotic Disorders, Shanghai, China
| | - Fei Wu
- Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Wan Deng
- Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yanyun Ma
- Six-sector Industrial Research Institute, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Xiaofeng Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
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18
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Antonyová V, Kejík Z, Brogyányi T, Kaplánek R, Pajková M, Talianová V, Hromádka R, Masařík M, Sýkora D, Mikšátková L, Martásek P, Jakubek M. Role of mtDNA disturbances in the pathogenesis of Alzheimer's and Parkinson's disease. DNA Repair (Amst) 2020; 91-92:102871. [PMID: 32502755 DOI: 10.1016/j.dnarep.2020.102871] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 12/11/2022]
Abstract
Neurodegenerative diseases (e.g. Alzheimer's and Parkinson's disease) are becoming increasingly problematic to healthcare systems. Therefore, their underlying mechanisms are trending topics of study in medicinal research. Numerous studies have evidenced a strong association between mitochondrial DNA disturbances (e.g. oxidative damage, mutations, and methylation shifts) and the initiation and progression of neurodegenerative diseases. Therefore, this review discusses the risk and development of neurodegenerative diseases in terms of disturbances in mitochondrial DNA and as a part of a complex ecosystem that includes other important mechanisms (e.g. neuroinflammation and the misfolding and aggregation of amyloid-β peptides, α-synuclein, and tau proteins). In addition, the influence of individual mitochondrial DNA haplogroups on the risk and development of neurodegenerative diseases is also described and discussed.
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Affiliation(s)
- Veronika Antonyová
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - Zdeněk Kejík
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic; Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Dejvice, Czech Republic
| | - Tereza Brogyányi
- Depertment of Pathological Physiology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 2, 121 00 Prague 2, Czech Republic
| | - Robert Kaplánek
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic; BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic; Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Dejvice, Czech Republic
| | - Martina Pajková
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic; BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - Veronika Talianová
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic; BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - Róbert Hromádka
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - Michal Masařík
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic; BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic
| | - David Sýkora
- BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic; Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Dejvice, Czech Republic
| | - Lucie Mikšátková
- BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic; Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Dejvice, Czech Republic
| | - Pavel Martásek
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic.
| | - Milan Jakubek
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Kateřinská 32, 121 08 Prague 2, Czech Republic; BIOCEV, First Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague 2, Czech Republic; Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Dejvice, Czech Republic.
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19
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Sukhorukov VS, Voronkova AS, Litvinova NA, Baranich TI, Illarioshkin SN. The Role of Mitochondrial DNA Individuality in the Pathogenesis of Parkinson’s Disease. RUSS J GENET+ 2020. [DOI: 10.1134/s1022795420040146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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20
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Adnan A, Kasimu K, Rakha A, He G, Yang T, Wang C, Lu J, Xuan J. Comprehensive genetic structure analysis of Han population from Dalian City revealed by 20 Y-STRs. Mol Genet Genomic Med 2020; 8:e1149. [PMID: 31989793 PMCID: PMC7057124 DOI: 10.1002/mgg3.1149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/15/2019] [Accepted: 01/08/2020] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Dalian is a city formed in the 1880s in Liaoning province, Northeastern China with a population of 6.69 million now. Han is the largest ethnic group not only across Mainland China (92%) and Taiwan (97%) but also considered to be the largest ethnic group of the world contributing to above 18% of world's population. METHODS In the current study, we genotyped Goldeneye® 20Y System loci in 879 unrelated male individuals from the Han ethnic group in Dalian city and calculated the forensic parameters of the 20 Y-STR loci. RESULTS In total, we observed 855 haplotypes, among which 835 (94.99%) were unique. The discrimination capacity (DC) of overall Goldeneye® 20Y System is 97.27% and it slightly reduces to 96.93% when only Y-filer® set of 17 Y-STRs were used, which mitigates using the extended set of markers in this population. We found DYS388 showed the lowest gene diversity (0.5151), whereas DYS389II showed the highest gene diversity (0.7621) in single copy Y-STR, and DYS385 showed the highest gene diversity (0.9683) among all. CONCLUSION Multidimensional scaling (MDS) analysis based upon pairwise Rst genetic distance showed difference among Han population from the east to the west and from the north to the south. We also predicted haplogroups using Y-STR haplotypes, which showed the dominance of Haplogroup O (65.2%) followed by Haplogroup C (14.5%) in Dalian Han population. Moreover, we found 10 individuals showed a null allele at the DYS448 in our samples. We also performed linear discriminatory analysis (LDA) between Han and other prominent Chinese minority ethnic groups. We presented Y-STRs data in the Y-Chromosome Haplotype Reference Database (YHRD) for the future forensic and other usage.
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Affiliation(s)
- Atif Adnan
- Department of Forensic Genetics and BiologySchool of Forensic MedicineChina Medical UniversityShenyangP.R. China
- Department of Human AnatomyCollege of Basic Medical ScienceChina Medical UniversityShenyangP.R. China
| | - Kaidirina Kasimu
- School of Clinical MedicineChina Medical UniversityShenyangP.R. China
| | - Allah Rakha
- Department of Forensic SciencesUniversity of Health Sciences LahoreLahorePakistan
| | - Guanglin He
- Department of Anthropology and EthnologyXiamen UniversityXiamenChina
| | - Tongya Yang
- Department of Human AnatomyCollege of Basic Medical ScienceChina Medical UniversityShenyangP.R. China
| | - Chuan‐Chao Wang
- Department of Anthropology and EthnologyXiamen UniversityXiamenChina
| | - Jie Lu
- Department of Human AnatomyCollege of Basic Medical ScienceChina Medical UniversityShenyangP.R. China
| | - Jin‐feng Xuan
- Department of Forensic Genetics and BiologySchool of Forensic MedicineChina Medical UniversityShenyangP.R. China
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21
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Skonieczna K, Jawień A, Marszałek A, Grzybowski T. Mitogenome germline mutations and colorectal cancer risk in Polish population. Arch Med Sci 2020; 16:366-373. [PMID: 32190148 PMCID: PMC7069428 DOI: 10.5114/aoms.2018.80893] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/09/2018] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION To date, several nuclear DNA variants have been shown to be associated with increased risk of developing colorectal cancer. Despite the fact that mitochondria play an important role in carcinogenesis, little is known about inherited mitochondrial DNA mutations that could be involved in this disease. Thus, potential associations between inherited mutations in the entire mitochondrial genomes and colorectal cancer were analysed in this study. MATERIAL AND METHODS Two hundred mitogenome sequences determined for colorectal cancer patients and healthy individuals from Poland were used to investigate the association between mtDNA alleles or haplogroups and colorectal cancer. Additional mtDNA control region haplotypes determined for 1353 individuals from the general Polish population were used for comparison of haplogroup and certain allele frequencies between case and control groups. RESULTS The non-R clades together with their diagnostic T alleles at positions 12705 and 16223 were observed with higher frequencies in healthy individuals than in colorectal cancer patients. Nevertheless, the differences of the R macrohaplogroup (as well as 12705 or 16223 alleles) frequencies between cases and controls were statistically insignificant after Bonferroni correction. Most of the non-R clades were of Asian and African origin, but none of them were prevalent in the control group. Moreover, neither mtDNA alleles nor haplogroups were associated with clinicopathological parameters of colorectal cancer patients. CONCLUSIONS Contrary to some previous reports, the findings of this study do not support the hypothesis that mitochondrial DNA variants contribute to inherited predisposition to colorectal cancer.
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Affiliation(s)
- Katarzyna Skonieczna
- Division of Molecular and Forensic Genetics, Department of Forensic Medicine, Faculty of Medicine, Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Arkadiusz Jawień
- Department of Vascular Surgery and Angiology, Faculty of Medicine, Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Andrzej Marszałek
- Department of Pathology, Faculty of Medicine, Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
- Department of Tumor Pathology and Prophylaxis, Poznan University of Medical Sciences and Greater Poland Cancer Center, Poznan, Poland
| | - Tomasz Grzybowski
- Division of Molecular and Forensic Genetics, Department of Forensic Medicine, Faculty of Medicine, Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
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22
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Lalrohlui F, Zohmingthanga J, Hruaii V, Kumar NS. Genomic profiling of mitochondrial DNA reveals novel complex gene mutations in familial type 2 diabetes mellitus individuals from Mizo ethnic population, Northeast India. Mitochondrion 2019; 51:7-14. [PMID: 31862415 DOI: 10.1016/j.mito.2019.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/12/2019] [Accepted: 12/05/2019] [Indexed: 01/07/2023]
Abstract
The variants reported for mitochondrial DNA (mtDNA) and type 2 diabetes (T2D) may not be accountable for the disease in certain other populations and the risk depends upon numerous factors which may include genetics, environment as well as ethnicity. This leads to a challenge in identifying, exploring and comparing the variants between diabetic cases and healthy controls in a remote unexplored tribal population. To study the possible contribution of mtDNA variants, we sequenced the entire mitochondrial genomes and the frequencies of mtSNPs, their association with familial T2D and the potential impact of non-synonymous substitutions on protein functions were determined. The mtSNP 8584 G > A (ATP6: A20T) was detected in 14.28% of the diabetic patients and none in the control groups. The mitochondrial ND3 variant 10398A > G was found to be significantly associated with the risk of T2D (OR = 9.489, 95% CI = 1.161-77.54, P value = 0.036). A novel Frame-shift substitution ND5: 81_81ins A at position 12,417 was observed in 53.57% of diabetic individuals. Majority of the variants lie in tRNA-Phe in the non-protein coding region of mtDNA for both diabetic cases and common cases. We concluded that mutations in the coding (synonymous or non-synonymous) and noncoding regions of the mitochondria might have contribution towards the development of T2D. Our study is the first to report the distinct mitochondrial variants which may be attributed to the susceptibility as well as development of type 2 diabetes in an ethnic tribe from northeast India.
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Affiliation(s)
- Freda Lalrohlui
- Department of Biotechnology, Mizoram University, Aizawl 796004, Mizoram, India
| | | | - Vanlal Hruaii
- Department of Medicine, Zoram Medical College, Aizawl 796005, Mizoram, India
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23
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Sun D, Wei Y, Zheng HX, Jin L, Wang J. Contribution of Mitochondrial DNA Variation to Chronic Disease in East Asian Populations. Front Mol Biosci 2019; 6:128. [PMID: 31803756 PMCID: PMC6873657 DOI: 10.3389/fmolb.2019.00128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 10/29/2019] [Indexed: 12/17/2022] Open
Abstract
Mitochondria are the main producers of energy in eukaryotic cells. Mitochondrial dysfunction is associated with specific mitochondrial DNA (mtDNA) variations (haplogroups), and these variations can contribute to human disease. East Asian populations show enrichment of many mitochondrial haplogroups, including A, B, D, G, M7, M8, M9, N9, R9, and exhibit half of the known haplogroups of worldwide. In this review, we summarize the current research in the field of mtDNA variation and associated disease in East Asian populations and discuss the physiological and pathological relevance of mitochondrial biology. mtDNA haplogroups are associated with various metabolic disorders ascribed to altered oxidative phosphorylation. The same mitochondrial haplogroup can show either a negative or positive association with different diseases. Mitochondrial dynamics, mitophagy, and mitochondrial oxidative stress, ultimately influence susceptibility to various diseases. In addition, mitochondrial retrograde signaling pathways may have profound effects on nuclear-mitochondrial interactions, affecting cellular morphology, and function. Other complex networks including proteostasis, mitochondrial unfolded protein response and reactive oxygen species signaling may also play pivotal roles in metabolic performance.
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Affiliation(s)
- Dayan Sun
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Yang Wei
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Hong-Xiang Zheng
- Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China
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24
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Mitochondrial DNA Haplogroup N9a Negatively Correlates with Incidence of Hepatocellular Carcinoma in Northern China. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 18:332-340. [PMID: 31629170 PMCID: PMC6807372 DOI: 10.1016/j.omtn.2019.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/20/2019] [Accepted: 09/05/2019] [Indexed: 01/10/2023]
Abstract
Mitochondrial DNA (mtDNA) haplogroups are associated with various types of cancer; however, the molecular mechanisms by which mtDNA haplogroups affect primary hepatocellular carcinoma (HCC) are not known. In this study, we carried out a case-control study on 388 HCC patients and 511 geographically matched asymptomatic control subjects in northern China. We found that mtDNA haplogroup N9a and its diagnostic SNP, m.16257C > A, negatively correlated with the incidence of HCC in northern China (odds ratio [OR] 0.290, 95% confidence interval [CI] 0.123–0.685, p = 0.005), particularly in patients with infection of hepatitis B/C virus (HBV/HCV) (for haplogroup N9a: OR 0.213, 95% CI 0.077–0.590, p = 0.003; for m.16257C > A: OR 0.262, 95% CI 0.107–0.643, p = 0.003). However, mtDNA haplogroup N9a is not associated with clinical characteristics of HCC including serum alpha-fetoprotein (AFP) level and tumor size. In addition, cytoplasmic hybrid (cybrid) cells with N9a haplogroup (N9a10a and N9a1) had transcriptome profiles distinct from those with non-N9a (B5, D4, and D5) haplogroups. Gene set enrichment analysis (GSEA) showed that metabolic activity varied significantly between N9a and non-N9a haplogroups. Moreover, cells with haplogroup N9a negatively correlated with cell division and multiple liver cancer pathways compared with non-N9a cells. Although it is still unclear how N9a affects the aforementioned GSEA pathways, our data suggest that mtDNA haplogroup N9a is negatively correlated with the incidence and progression of HCC in northern China.
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25
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Mitochondrial DNA Variants and Common Diseases: A Mathematical Model for the Diversity of Age-Related mtDNA Mutations. Cells 2019; 8:cells8060608. [PMID: 31216686 PMCID: PMC6627076 DOI: 10.3390/cells8060608] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/30/2019] [Accepted: 06/14/2019] [Indexed: 12/18/2022] Open
Abstract
The mitochondrion is the only organelle in the human cell, besides the nucleus, with its own DNA (mtDNA). Since the mitochondrion is critical to the energy metabolism of the eukaryotic cell, it should be unsurprising, then, that a primary driver of cellular aging and related diseases is mtDNA instability over the life of an individual. The mutation rate of mammalian mtDNA is significantly higher than the mutation rate observed for nuclear DNA, due to the poor fidelity of DNA polymerase and the ROS-saturated environment present within the mitochondrion. In this review, we will discuss the current literature showing that mitochondrial dysfunction can contribute to age-related common diseases such as cancer, diabetes, and other commonly occurring diseases. We will then turn our attention to the likely role that mtDNA mutation plays in aging and senescence. Finally, we will use this context to develop a mathematical formula for estimating for the accumulation of somatic mtDNA mutations with age. This resulting model shows that almost 90% of non-proliferating cells would be expected to have at least 100 mutations per cell by the age of 70, and almost no cells would have fewer than 10 mutations, suggesting that mtDNA mutations may contribute significantly to many adult onset diseases.
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26
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Wang G, Zhang DF, Jiang HY, Fan Y, Ma L, Shen Z, Bi R, Xu M, Tan L, Shan B, Yao YG, Feng T. Mutation and association analyses of dementia-causal genes in Han Chinese patients with early-onset and familial Alzheimer's disease. J Psychiatr Res 2019; 113:141-147. [PMID: 30954774 DOI: 10.1016/j.jpsychires.2019.03.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/22/2019] [Accepted: 03/27/2019] [Indexed: 12/13/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia in the elderly. It shares clinical and pathological features with other types of dementia, such as vascular dementia (VaD), Lewy body dementia (LBD), and frontotemporal dementia (FTD). We have hypothesized that there might be an overlapping molecular mechanism and genetic basis to the different types of dementia. In this study, we analyzed the mutation pattern of dementia-causal genes in 169 Han Chinese patients with familial and early-onset AD by using whole exome sequencing or targeted resequencing. We identified 9 potentially pathogenic mutations in the AD-causal genes APP, PSEN1, PSEN2, and 6 mutations in a group of non-AD dementia-causal genes including the FTD-causal gene GRN and the VaD-causal gene NOTCH3. A common splice-site variant rs514492 in the FTD-causal gene VCP showed a positive association with AD risk (P = 0.0003, OR = 1.618), whereas the rare missense variant rs33949390 (p. R 1628P) in the LBD-causal gene LRRK2 showed a protective effect on AD risk (P = 0.0004, OR = 0.170). The presence of putative pathogenic mutations and risk variants in these causal genes for different types of dementia in clinically diagnosed familial and early-onset AD patients suggests a need to screen for mutations of the dementia-causal genes in cases of AD to avoid misdiagnosis. These mutations also support the idea that there are overlapping pathomechanisms between AD and other forms of dementia.
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Affiliation(s)
- Guihong Wang
- Center for Neurodegenerative Diseases, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, China
| | - Deng-Feng Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China; Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China
| | - Hong-Yan Jiang
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China
| | - Yu Fan
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China; Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China
| | - Lingyan Ma
- Center for Neurodegenerative Diseases, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, China
| | - Zonglin Shen
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China
| | - Rui Bi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China; Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China
| | - Min Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China
| | - Liwen Tan
- Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Baoci Shan
- Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing, 100049, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650204, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China; KIZ - CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, China.
| | - Tao Feng
- Center for Neurodegenerative Diseases, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, China; China National Clinical Research Center for Neurological Diseases, Beijing, 100050, China; Parkinson's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, 100050, China.
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27
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Smieszek S, Jia P, Samuels DC, Zhao Z, Barnholtz-Sloan J, Kaur H, Letendre S, Ellis R, Franklin DR, Hulgan T, Kallianpur A, Bush WS. Nuclear-Mitochondrial interactions influence susceptibility to HIV-associated neurocognitive impairment. Mitochondrion 2019; 46:247-255. [PMID: 30026132 PMCID: PMC6336535 DOI: 10.1016/j.mito.2018.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 06/30/2018] [Accepted: 07/13/2018] [Indexed: 12/26/2022]
Abstract
HIV-associated neurocognitive impairment (NCI) is a term established to capture a wide spectrum of HIV related neurocognitive deficits ranging in severity from asymptomatic to dementia. The genetic underpinnings of this complex phenotype are incompletely understood. Mitochondrial function has long been thought to play a role in neurodegeneration, along with iron metabolism and transport. In this work, we aimed to characterize the interplay of mitochondrial DNA (mtDNA) haplogroup and nuclear genetic associations to NCI phenotypes in the CHARTER cohort, encompassing 1025 individuals of European-descent, African-descent, or admixed Hispanic. We first employed a polygenic modeling approach to investigate the global effect of previous marginally associated nuclear SNPs, and to examine how the polygenic effect of these SNPs is influenced by mtDNA haplogroups. We see evidence of a significant interaction between nuclear SNPs en masse and mtDNA haplogroups within European-descent and African-descent individuals. Subsequently, we performed an analysis of each SNP by mtDNA haplogroup, and detected significant interactions between two nuclear SNPs (rs17160128 and rs12460243) and European haplogroups. These findings, which require validation in larger cohorts, indicate a potential new role for nuclear-mitochondrial DNA interactions in susceptibility to NCI and shed light onto the pathophysiology of this neurocognitive phenotype.
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Affiliation(s)
- S Smieszek
- Department of Population and Quantitative Health Sciences, and Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, United States.
| | - P Jia
- Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - D C Samuels
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Z Zhao
- Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - J Barnholtz-Sloan
- Department of Population and Quantitative Health Sciences, and Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, United States
| | - H Kaur
- Department of Genomic Medicine, Lerner Research Institute and Department of Medicine, Cleveland Clinic, Cleveland, OH, United States
| | - S Letendre
- Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - R Ellis
- Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - D R Franklin
- Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - T Hulgan
- School of Medicine, Vanderbilt University, Nashville, TN, United States
| | - A Kallianpur
- Department of Genomic Medicine, Lerner Research Institute and Department of Medicine, Cleveland Clinic, Cleveland, OH, United States; Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - W S Bush
- Department of Population and Quantitative Health Sciences, and Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, United States; Department of Genomic Medicine, Lerner Research Institute and Department of Medicine, Cleveland Clinic, Cleveland, OH, United States
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28
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Ramos A, Planchat M, Vieira Melo AR, Raposo M, Shamim U, Suroliya V, Srivastava AK, Faruq M, Morino H, Ohsawa R, Kawakami H, Bannach Jardim L, Saraiva-Pereira ML, Vasconcelos J, Santos C, Lima M. Mitochondrial DNA haplogroups and age at onset of Machado-Joseph disease/spinocerebellar ataxia type 3: a study in patients from multiple populations. Eur J Neurol 2018; 26:506-512. [PMID: 30414314 DOI: 10.1111/ene.13860] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 11/06/2018] [Indexed: 01/16/2023]
Abstract
BACKGROUND AND PURPOSE Mitochondrial dysfunction has been implicated in the pathogenesis of several neurodegenerative disorders, including Machado-Joseph disease (MJD), an autosomal dominant late-onset polyglutamine ataxia that results from an unstable expansion of a CAG tract in the ATXN3 gene. The size of the CAG tract only partially explains age at onset (AO), highlighting the existence of disease modifiers. Mitochondrial DNA (mtDNA) haplogroups have been associated with clinical presentation in other polyglutamine disorders, constituting potential modifiers of MJD phenotype. METHODS A cross-sectional study, using 235 unrelated patients from Portugal, Brazil, India and Japan, was performed to investigate if mtDNA haplogroups contribute to AO of MJD. mtDNA haplogroups were obtained after sequencing the mtDNA hypervariable region I. Patients were classified in 15 phylogenetically related haplogroup clusters. RESULTS The AO was significantly different among populations, implying the existence of other non-CAG factors, which seem to be population specific. In the Portuguese population, patients classified as belonging to haplogroup JT presented the earliest onset (estimated onset 34.6 years of age). Haplogroups W and X seem to have a protective effect, causing a delay in onset (estimated onset 47 years of age). No significant association between haplogroup clusters and AO was detected in the other populations or when all patients were pooled. Although haplogroup JT has already been implicated in other neurodegenerative disorders, no previous reports of an association between haplogroups W and X and disease were found. CONCLUSIONS These findings suggest that haplogroups JT, W and X modify AO in MJD. Replication studies should be performed in European populations, where the frequency of the candidate modifiers is similar.
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Affiliation(s)
- A Ramos
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.,Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Departamento Biologia Animal, Biologia Vegetal i Ecologia, Unitat d'Antropologia Biològica, Universitat Autònoma de Barcelona, Cerdanyola del Valles, Spain
| | - M Planchat
- Departamento Biologia Animal, Biologia Vegetal i Ecologia, Unitat d'Antropologia Biològica, Universitat Autònoma de Barcelona, Cerdanyola del Valles, Spain
| | - A R Vieira Melo
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.,Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - M Raposo
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.,Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - U Shamim
- CSIR - Institute of Genomics and Integrative Biology (IGIB), New Delhi, India
| | - V Suroliya
- CSIR - Institute of Genomics and Integrative Biology (IGIB), New Delhi, India.,Department of Neurology, Neuroscience Centre, All India Institute of Medical Sciences, New Delhi, India
| | - A K Srivastava
- Department of Neurology, Neuroscience Centre, All India Institute of Medical Sciences, New Delhi, India
| | - M Faruq
- CSIR - Institute of Genomics and Integrative Biology (IGIB), New Delhi, India
| | - H Morino
- Department of Epidemiology, Research Institute for Radiology and Medicine, Hiroshima University, Hiroshima, Japan
| | - R Ohsawa
- Department of Epidemiology, Research Institute for Radiology and Medicine, Hiroshima University, Hiroshima, Japan
| | - H Kawakami
- Department of Epidemiology, Research Institute for Radiology and Medicine, Hiroshima University, Hiroshima, Japan
| | - L Bannach Jardim
- Medical Genetics Service, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil.,Departamento de Medicina Interna, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - M L Saraiva-Pereira
- Medical Genetics Service, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil.,Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - J Vasconcelos
- Serviço de Neurologia, Hospital do Divino Espírito Santo, Ponta Delgada, Açores, Portugal
| | - C Santos
- Departamento Biologia Animal, Biologia Vegetal i Ecologia, Unitat d'Antropologia Biològica, Universitat Autònoma de Barcelona, Cerdanyola del Valles, Spain
| | - M Lima
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.,Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
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29
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Whole sequence of the mitochondrial DNA genome of Kearns Sayre Syndrome patients: Identification of deletions and variants. Gene 2018; 688:171-181. [PMID: 30528267 DOI: 10.1016/j.gene.2018.11.085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 09/04/2018] [Accepted: 11/28/2018] [Indexed: 02/07/2023]
Abstract
Mitochondria both produce the energy of the cell as ATP via respiration and regulate cellular metabolism. Accordingly, any deletion or mutation in the mitochondrial DNA (mtDNA) may result in a disease. One of these diseases is Kearns Sayre syndrome (KSS), described for the first time in 1958, where different large-scale deletions of different sizes and at different positions have been reported in the mitochondrial genome of patients with similar clinical symptoms. In this study, sequences of the mitochondrial genome of three patients with clinic features of KSS were analyzed. Our results revealed the position, heteroplasmy percentage, size of deletions, and their haplogroups. Two patients contained deletions reported previously and one patient showed a new deletion not reported previously. These results display for the first time a systematic analysis of mtDNA variants in the whole mtDNA genome of patients with KSS to help to understand their association with the disease.
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30
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Hwang IW, Kwon BN, Kim HJ, Han SH, Lee NR, Lim MH, Kwon HJ, Jin HJ. Assessment of associations between mitochondrial DNA haplogroups and attention deficit and hyperactivity disorder in Korean children. Mitochondrion 2018; 47:174-178. [PMID: 30423452 DOI: 10.1016/j.mito.2018.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 09/21/2018] [Accepted: 11/02/2018] [Indexed: 01/05/2023]
Abstract
Attention deficit hyperactivity disorder (ADHD) is a multifactorial disorder with multiple environmental and biological etiologies, including genetic factors. Until now, several genetic variants have been reported to be significantly associated with ADHD. Recently, the relationship between mitochondrial DNA (mtDNA) haplogroups and psychiatric disorders such as schizophrenia has also been reported. However, currently there are no reports pertaining to the genetic association between mtDNA haplogroups and ADHD. Therefore, we performed an mtDNA haplogroup analysis of a total of 472 Korean children (150 Children with ADHD and 322 controls). The 20 East Asian specific mtDNA haplogroups were determined using the SNaPshot assay. We also sequenced the displacement loop (D-loop) region, position 15,971-613. Our results showed that haplogroup B4 was significantly associated with ADHD (OR, 1.90; 95% CI, 1.055-3.429; p = 0.031). A marginally significant association was found in subjects with ADHD and haplogroup B5 (OR, 0.26; 95% CI, 0.059-1.139; p = 0.041). When stratified based on gender, an association was also observed between haplogroup B5 and boys diagnosed with ADHD (OR, 0.17; 95% CI, 0.022-1.340; p = 0.048). Compared with boys, girls with ADHD carried an excess of the haplogroup D4b (OR, 4.83; 95% CI, 1.352-17.272; p = 0.014). Stratified analysis of subtypes also showed significant results (combined: haplogroup B4, p = 0.007; inattentive: haplogroup F, p = 0.022). Our results showed a possible role of mtDNA haplogroups in the genetic etiology of ADHD and ADHD symptoms in Korean children.
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Affiliation(s)
- In Wook Hwang
- Department of Biological Sciences, College of Natural Science, Dankook University, Cheonan, South Korea
| | - Bit Na Kwon
- Department of Biological Sciences, College of Natural Science, Dankook University, Cheonan, South Korea
| | - Hyung Jun Kim
- Department of Biological Sciences, College of Natural Science, Dankook University, Cheonan, South Korea
| | - Seung Hun Han
- Department of Biological Sciences, College of Natural Science, Dankook University, Cheonan, South Korea
| | - Noo Ri Lee
- Department of Biological Sciences, College of Natural Science, Dankook University, Cheonan, South Korea
| | - Myung Ho Lim
- Department of Psychology and Psychotherapy, College of Health Sciences, Dankook University, Cheonan, South Korea
| | - Ho Jang Kwon
- Department of Preventive Medicine, College of Medicine, Dankook University, Cheonan, South Korea
| | - Han Jun Jin
- Department of Biological Sciences, College of Natural Science, Dankook University, Cheonan, South Korea.
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31
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Zhang DF, Fan Y, Xu M, Wang G, Wang D, Li J, Kong LL, Zhou H, Luo R, Bi R, Wu Y, Li GD, Li M, Luo XJ, Jiang HY, Tan L, Zhong C, Fang Y, Zhang C, Sheng N, Jiang T, Yao YG. Complement C7 is a novel risk gene for Alzheimer's disease in Han Chinese. Natl Sci Rev 2018; 6:257-274. [PMID: 31032141 PMCID: PMC6477931 DOI: 10.1093/nsr/nwy127] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/03/2018] [Indexed: 01/05/2023] Open
Abstract
Alzheimer's disease is the most common neurodegenerative disease, and has a high level of genetic heritability and population heterogeneity. In this study, we performed the whole-exome sequencing of Han Chinese patients with familial and/or early-onset Alzheimer's disease, followed by independent validation, imaging analysis and function characterization. We identified an exome-wide significant rare missense variant rs3792646 (p.K420Q) in the C7 gene in the discovery stage (P = 1.09 × 10−6, odds ratio = 7.853) and confirmed the association in different cohorts and a combined sample (1615 cases and 2832 controls, Pcombined = 2.99 × 10−7, odds ratio = 1.930). The risk allele was associated with decreased hippocampal volume and poorer working memory performance in early adulthood, thus resulting in an earlier age of disease onset. Overexpression of the mutant p.K420Q disturbed cell viability, immune activation and β-amyloid processing. Electrophysiological analyses showed that the mutant p.K420Q impairs the inhibitory effect of wild type C7 on the excitatory synaptic transmission in pyramidal neurons. These findings suggested that C7 is a novel risk gene for Alzheimer's disease in Han Chinese.
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Affiliation(s)
- Deng-Feng Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China
| | - Yu Fan
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China
| | - Min Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Guihong Wang
- Center for Neurodegenerative Diseases, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China
| | - Dong Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Jin Li
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China.,National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Li-Li Kong
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Hejiang Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Rongcan Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Rui Bi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Yong Wu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Guo-Dong Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | | | - Ming Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiong-Jian Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China
| | - Hong-Yan Jiang
- Department of Psychiatry, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Liwen Tan
- Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Chunjiu Zhong
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yiru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Chen Zhang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Nengyin Sheng
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Tianzi Jiang
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China.,National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China.,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
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Genetic association of the cytochrome c oxidase-related genes with Alzheimer's disease in Han Chinese. Neuropsychopharmacology 2018; 43:2264-2276. [PMID: 30054583 PMCID: PMC6135758 DOI: 10.1038/s41386-018-0144-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 02/05/2023]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia. Mitochondrial dysfunction has been widely reported in AD due to its important role in cellular metabolism and energy production. Complex IV (cytochrome c oxidase, COX) of mitochondrial electron transport chain, is particularly vulnerable in AD. Defects of COX in AD have been well documented, but there is little evidence to support the genetic association of the COX-related genes with AD. In this study, we investigated the genetic association between 17 nuclear-encoded COX-related genes and AD in 1572 Han Chinese. The whole exons of these genes were also screened in 107 unrelated AD patients with a high probability of hereditarily transmitted AD. Variants in COX6B1, NDUFA4, SURF1, and COX10 were identified to be associated with AD. An integrative analysis with data of eQTL, expression and pathology revealed that most of the COX-related genes were significantly downregulated in AD patients and mouse models, and the AD-associated variants in COX6B1, SURF1, and COX10 were linked to altered mRNA levels in brain tissues. Furthermore, mRNA levels of Ndufa4, Cox5a, Cox10, Cox6b2, Cox7a2, and Lrpprc were significantly correlated with Aβ plaque burden in hippocampus of AD mice. Convergent functional genomics analysis revealed strong supportive evidence for the roles of COX6B1, COX10, NDUFA4, and SURF1 in AD. As the result of our comprehensive analysis of the COX-related genes at the genetic, expression, and pathology levels, we have been able to provide a systematic view for understanding the relationships of the COX-related genes in the pathology of AD.
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33
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Mitochondrial DNA variants modulate genetic susceptibility to Parkinson's disease in Han Chinese. Neurobiol Dis 2018; 114:17-23. [DOI: 10.1016/j.nbd.2018.02.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 01/18/2018] [Accepted: 02/21/2018] [Indexed: 12/26/2022] Open
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34
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Population data and phylogenetic structure of Han population from Jiangsu province of China on GlobalFiler STR loci. Int J Legal Med 2018; 132:1301-1304. [PMID: 29500610 DOI: 10.1007/s00414-018-1815-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 02/22/2018] [Indexed: 12/30/2022]
Abstract
Forensic statistical parameters based on allelic frequencies of commonly used short tandem repeats were estimated for the Han population of Jiangsu province from P.R. China. The 6-dye GlobalFiler™ PCR amplification kit incorporates 21 autosomal STRs, providing reliable DNA typing results with enhanced the power of discrimination. Here, we analyzed the GlobalFiler™ STR loci in 516 unrelated individuals from Jiangsu Han population. A total of 256 alleles were observed ranging between 5 and 35.2 repeat units, and SE33 showed the greatest power of discrimination (34 alleles) in Jiangsu Han population. Most of the loci were found to be in the Hardy-Weinberg equilibrium after the Bonferroni correction with the exception of D3S1358. The combined power of exclusion (CPE) was 0.999999996353609, and the combined match probability (CMP) was 3.64 × 10-25. Phylogenetic parameters including pairwise genetic distances showed that Han population living in Jiangsu had closest genetic relationship with other East Asian populations. The present study provides precise reference database for forensic applications and population genetic studies.
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35
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Ridge PG, Kauwe JSK. Mitochondria and Alzheimer's Disease: the Role of Mitochondrial Genetic Variation. CURRENT GENETIC MEDICINE REPORTS 2018; 6:1-10. [PMID: 29564191 PMCID: PMC5842281 DOI: 10.1007/s40142-018-0132-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Purpose of Review Alzheimer’s disease (AD) is the most common form of dementia, affects an increasing number of people worldwide, has a rapidly increasing incidence, and is fatal. In the past several years, significant progress has been made towards solving the genetic architecture of AD, but our understanding remains incomplete and has not led to treatments that either cure or slow disease. There is substantial evidence that mitochondria are involved in AD: mitochondrial functional declines in AD, mitochondrial encoded gene expression changes, mitochondria are morphologically different, and mitochondrial fusion/fission are modified. While a majority of mitochondrial proteins are nuclear encoded and could lead to malfunction in mitochondria, the mitochondrial genome encodes numerous proteins important for the electron transport chain, which if damaged could possibly lead to mitochondrial changes observed in AD. Here, we review publications that describe a relationship between the mitochondrial genome and AD and make suggestions for analysis approaches and data acquisition, from existing datasets, to study the mitochondrial genetics of AD. Recent Findings Numerous mitochondrial haplogroups and SNPs have been reported to influence risk for AD, but the majority of these have not been replicated, nor experimentally validated. Summary The role of the mitochondrial genome in AD remains elusive, and several impediments exist to fully understand the relationship between the mitochondrial genome and AD. Yet, by leveraging existing datasets and implementing appropriate analysis approaches, determining the role of mitochondrial genetics in risk for AD is possible.
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Affiliation(s)
- Perry G. Ridge
- Department of Biology, Brigham Young University, 4102 LSB, Provo, UT 84602 USA
| | - John S. K. Kauwe
- Department of Biology, Brigham Young University, 4102 LSB, Provo, UT 84602 USA
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36
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Li X, Zhou TC, Wu CH, Tao LL, Bi R, Chen LJ, Deng DY, Liu C, Otecko NO, Tang Y, Lai X, Zhang L, Wei J. Correlations between mitochondrial DNA haplogroup D5 and chronic hepatitis B virus infection in Yunnan, China. Sci Rep 2018; 8:869. [PMID: 29343698 PMCID: PMC5772044 DOI: 10.1038/s41598-018-19184-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 12/19/2017] [Indexed: 12/13/2022] Open
Abstract
Mitochondrial abnormality is frequently reported in individuals with hepatitis B virus (HBV) infection, but the associated hosts’ mitochondrial genetic factors remain obscure. We hypothesized that mitochondria may affect host susceptibility to HBV infection. In this study, we aimed to detect the association between chronic HBV infection and mitochondrial DNA in Chinese from Yunnan, Southwest China. A total of 272 individuals with chronic HBV infection (CHB), 310 who had never been infected by HBV (healthy controls, HC) and 278 with a trace of HBV infection (spontaneously recovered, SR) were analysed for mtDNA sequence variations and classified into respective haplogroups. Haplogroup frequencies were compared between HBV infected patients, HCs and SRs. Haplogroup D5 presented a higher frequency in CHBs than in HCs (P = 0.017, OR = 2.87, 95% confidence interval [CI] = (1.21–6.81)) and SRs (P = 0.049, OR = 2.90, 95% CI = 1.01–8.35). The network of haplogroup D5 revealed a distinct distribution pattern between CHBs and non-CHBs. A trend of higher viral load among CHBs with haplogroup D5 was observed. Our results indicate the risk potential of mtDNA haplogroup D5 in chronic HBV infection in Yunnan, China.
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Affiliation(s)
- Xiao Li
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Tai-Cheng Zhou
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Chang-Hui Wu
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Li-Lin Tao
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Rui Bi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, Yunnan, China
| | - Li-Jun Chen
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - De-Yao Deng
- Clinical Laboratory of the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Chang Liu
- Clinical Laboratory of the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Newton O Otecko
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, China
| | - Yang Tang
- The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, 650000, China
| | - Xin Lai
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China
| | - Liang Zhang
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China.
| | - Jia Wei
- Central Lab, Liver Disease Research Center, the Second People's Hospital of Yunnan Province, Kunming, 650203, Yunnan, China.
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37
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MutPred mutational load analysis shows mildly deleterious mitochondrial DNA variants are not more prevalent in Alzheimer's patients, but may be under-represented in healthy older individuals. Mitochondrion 2017; 34:141-146. [DOI: 10.1016/j.mito.2017.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 02/09/2017] [Accepted: 04/06/2017] [Indexed: 12/24/2022]
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38
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MtDNA meta-analysis reveals both phenotype specificity and allele heterogeneity: a model for differential association. Sci Rep 2017; 7:43449. [PMID: 28230165 PMCID: PMC5322532 DOI: 10.1038/srep43449] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 01/23/2017] [Indexed: 12/13/2022] Open
Abstract
Human mtDNA genetic variants have traditionally been considered markers for ancient population migrations. However, during the past three decades, these variants have been associated with altered susceptibility to various phenotypes, thus supporting their importance for human health. Nevertheless, mtDNA disease association has frequently been supported only in certain populations, due either to population stratification or differential epistatic compensations among populations. To partially overcome these obstacles, we performed meta-analysis of the multiple mtDNA association studies conducted until 2016, encompassing 53,975 patients and 63,323 controls. Our findings support the association of mtDNA haplogroups and recurrent variants with specific phenotypes such as Parkinson’s disease, type 2 diabetes, longevity, and breast cancer. Strikingly, our assessment of mtDNA variants’ involvement with multiple phenotypes revealed significant impact for Caucasian haplogroups H, J, and K. Therefore, ancient mtDNA variants could be divided into those that affect specific phenotypes, versus others with a general impact on phenotype combinations. We suggest that the mtDNA could serve as a model for phenotype specificity versus allele heterogeneity.
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39
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Li GD, Bi R, Zhang DF, Xu M, Luo R, Wang D, Fang Y, Li T, Zhang C, Yao YG. Female-specific effect of the BDNF gene on Alzheimer's disease. Neurobiol Aging 2017; 53:192.e11-192.e19. [PMID: 28202203 DOI: 10.1016/j.neurobiolaging.2016.12.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 12/21/2016] [Accepted: 12/24/2016] [Indexed: 02/05/2023]
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease influenced by genetic and environmental factors. Brain-derived neurotrophic factor (BDNF) plays an important role in the progression of AD, but the genetic association between BDNF and AD remains controversial. In this study, we aimed to explore the potential association between genetic variants in BDNF and AD in Han Chinese and to investigate whether the association is affected by gender. A 3-stage study was conducted to evaluate the genetic association between BDNF and AD. Data mining of the reported expression data, brain-imaging data, and biomarker data in AD patients was also performed to further validate the results. We found a female-specific genetic association of rs6265 with AD and a gender-related messenger RNA expression of BDNF in brain tissues of AD patients. In addition, we observed a clear female-specific risk trend for the effect of rs6265 on AD endophenotypes. Our results clarified the available controversies regarding the role of rs6265 in AD and indicated that BDNF may be a female-specific risk gene for AD.
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Affiliation(s)
- Guo-Dong Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Rui Bi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Deng-Feng Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Min Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Rongcan Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Dong Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
| | | | - Yiru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Li
- The Mental Health Center and Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Chen Zhang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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40
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Wang Y, Brinton RD. Triad of Risk for Late Onset Alzheimer's: Mitochondrial Haplotype, APOE Genotype and Chromosomal Sex. Front Aging Neurosci 2016; 8:232. [PMID: 27757081 PMCID: PMC5047907 DOI: 10.3389/fnagi.2016.00232] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/20/2016] [Indexed: 01/02/2023] Open
Abstract
Brain is the most energetically demanding organ of the body, and is thus vulnerable to even modest decline in ATP generation. Multiple neurodegenerative diseases are associated with decline in mitochondrial function, e.g., Alzheimer’s, Parkinson’s, multiple sclerosis and multiple neuropathies. Genetic variances in the mitochondrial genome can modify bioenergetic and respiratory phenotypes, at both the cellular and system biology levels. Mitochondrial haplotype can be a key driver of mitochondrial efficiency. Herein, we focus on the association between mitochondrial haplotype and risk of late onset Alzheimer’s disease (LOAD). Evidence for the association of mitochondrial genetic variances/haplotypes and the risk of developing LOAD are explored and discussed. Further, we provide a conceptual framework that suggests an interaction between mitochondrial haplotypes and two demonstrated risk factors for Alzheimer’s disease (AD), apolipoprotein E (APOE) genotype and chromosomal sex. We posit herein that mitochondrial haplotype, and hence respiratory capacity, plays a key role in determining risk of LOAD and other age-associated neurodegenerative diseases. Further, therapeutic design and targeting that involve mitochondrial haplotype would advance precision medicine for AD and other age related neurodegenerative diseases.
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Affiliation(s)
- Yiwei Wang
- Department of Clinical Pharmacy, School of Pharmacy, University of Southern California Los Angeles, CA, USA
| | - Roberta D Brinton
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California Los Angeles, CA, USA
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41
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Li H, Bi R, Fan Y, Wu Y, Tang Y, Li Z, He Y, Zhou J, Tang J, Chen X, Yao YG. mtDNA Heteroplasmy in Monozygotic Twins Discordant for Schizophrenia. Mol Neurobiol 2016; 54:4343-4352. [DOI: 10.1007/s12035-016-9996-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 06/14/2016] [Indexed: 12/30/2022]
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42
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Thaker K, Chwa M, Atilano SR, Coskun P, Cáceres-Del-Carpio J, Udar N, Boyer DS, Jazwinski SM, Miceli MV, Nesburn AB, Kuppermann BD, Kenney MC. Increased expression of ApoE and protection from amyloid-beta toxicity in transmitochondrial cybrids with haplogroup K mtDNA. Neurobiol Dis 2016; 93:64-77. [PMID: 27109188 DOI: 10.1016/j.nbd.2016.04.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/13/2016] [Accepted: 04/20/2016] [Indexed: 01/09/2023] Open
Abstract
Mitochondrial (mt) DNA haplogroups, defined by specific single nucleotide polymorphism (SNP) patterns, represent populations of diverse geographic origins and have been associated with increased risk or protection of many diseases. The H haplogroup is the most common European haplogroup while the K haplogroup is highly associated with the Ashkenazi Jewish population. Transmitochondrial cybrids (cell lines with identical nuclei, but mtDNA from either H (n=8) or K (n=8) subjects) were analyzed by the Seahorse flux analyzer, quantitative polymerase chain reaction (Q-PCR) and immunohistochemistry (IHC). Cybrids were treated with amyloid-β peptides and cell viabilities were measured. Other cybrids were demethylated with 5-aza-2'-deoxycytidine (5-aza-dC) and expression levels for APOE and NFkB2 were measured. Results show K cybrids have (a) significantly lower mtDNA copy numbers, (b) higher expression levels for MT-DNA encoded genes critical for oxidative phosphorylation, (c) lower Spare Respiratory Capacity, (d) increased expression of inhibitors of the complement pathway and important inflammasome-related genes; and (e) significantly higher levels of APOE transcription that were independent of methylation status. After exposure to amyloid-β1-42 peptides (active form), H haplogroup cybrids demonstrated decreased cell viability compared to those treated with amyloid-β42-1 (inactive form) (p<0.0001), while this was not observed in the K cybrids (p=0.2). K cybrids had significantly higher total global methylation levels and differences in expression levels for two acetylation genes and four methylation genes. Demethylation with 5-aza-dC altered expression levels for NFkB2, while APOE transcription patterns were unchanged. Our findings support the hypothesis that mtDNA-nuclear retrograde signaling may mediate expression levels of APOE, a key factor in many age-related diseases. Future studies will focus on identification of the mitochondrial-nuclear retrograde signaling mechanism(s) contributing to these mtDNA-mediated differences.
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Affiliation(s)
- Kunal Thaker
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States
| | - Marilyn Chwa
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States
| | - Shari R Atilano
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States
| | - Pinar Coskun
- Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, United States
| | | | - Nitin Udar
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States
| | - David S Boyer
- Retina-Vitreous Associates Medical Group, Beverly Hills, CA, United States
| | - S Michal Jazwinski
- Tulane Center for Aging and Department of Medicine, Tulane University, New Orleans, LA, United States
| | - Michael V Miceli
- Tulane Center for Aging and Department of Medicine, Tulane University, New Orleans, LA, United States
| | - Anthony B Nesburn
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States; Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Baruch D Kuppermann
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States
| | - M Cristina Kenney
- Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, United States; Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, United States.
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43
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Mitochondrial genome variations and functional characterization in Han Chinese families with schizophrenia. Schizophr Res 2016; 171:200-6. [PMID: 26822593 DOI: 10.1016/j.schres.2016.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 12/09/2015] [Accepted: 01/04/2016] [Indexed: 11/23/2022]
Abstract
The relationship between mitochondrial DNA (mtDNA) variants and schizophrenia has been strongly debated. To test whether mtDNA variants are involved in schizophrenia in Han Chinese patients, we sequenced the entire mitochondrial genomes of probands from 11 families with a family history and maternal inheritance pattern of schizophrenia. Besides the haplogroup-specific variants, we found 11 nonsynonymous private variants, one rRNA variant, and one tRNA variant in 5 of 11 probands. Among the nonsynonymous private variants, mutations m.15395 A>G and m.8536 A>G were predicted to be deleterious after web-based searches and in silico program affiliated analysis. Functional characterization further supported the potential pathogenicity of the two variants m.15395 A>G and m.8536 A>G to cause mitochondrial dysfunction at the cellular level. Our results showed that mtDNA variants were actively involved in schizophrenia in some families with maternal inheritance of this disease.
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44
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CFH Variants Affect Structural and Functional Brain Changes and Genetic Risk of Alzheimer's Disease. Neuropsychopharmacology 2016; 41:1034-45. [PMID: 26243271 PMCID: PMC4748428 DOI: 10.1038/npp.2015.232] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 07/08/2015] [Accepted: 07/18/2015] [Indexed: 02/05/2023]
Abstract
The immune response is highly active in Alzheimer's disease (AD). Identification of genetic risk contributed by immune genes to AD may provide essential insight for the prognosis, diagnosis, and treatment of this neurodegenerative disease. In this study, we performed a genetic screening for AD-related top immune genes identified in Europeans in a Chinese cohort, followed by a multiple-stage study focusing on Complement Factor H (CFH) gene. Effects of the risk SNPs on AD-related neuroimaging endophenotypes were evaluated through magnetic resonance imaging scan, and the effects on AD cerebrospinal fluid biomarkers (CSF) and CFH expression changes were measured in aged and AD brain tissues and AD cellular models. Our results showed that the AD-associated top immune genes reported in Europeans (CR1, CD33, CLU, and TREML2) have weak effects in Chinese, whereas CFH showed strong effects. In particular, rs1061170 (P(meta)=5.0 × 10(-4)) and rs800292 (P(meta)=1.3 × 10(-5)) showed robust associations with AD, which were confirmed in multiple world-wide sample sets (4317 cases and 16 795 controls). Rs1061170 (P=2.5 × 10(-3)) and rs800292 (P=4.7 × 10(-4)) risk-allele carriers have an increased entorhinal thickness in their young age and a higher atrophy rate as the disease progresses. Rs800292 risk-allele carriers have higher CSF tau and Aβ levels and severe cognitive decline. CFH expression level, which was affected by the risk-alleles, was increased in AD brains and cellular models. These comprehensive analyses suggested that CFH is an important immune factor in AD and affects multiple pathological changes in early life and during disease progress.
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Zhang AM, Bi R, Hu QX, Fan Y, Zhang Q, Yao YG. The OPA1 Gene Mutations Are Frequent in Han Chinese Patients with Suspected Optic Neuropathy. Mol Neurobiol 2016; 54:1622-1630. [DOI: 10.1007/s12035-016-9771-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 02/02/2016] [Indexed: 12/24/2022]
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Zhang J, Zhu L, Huang X, Xu P, Chen Z, Huang Q, Zhang X. Mitochondrial DNA Haplogroup R Confers a Genetic Risk Factor for Intrauterine Adhesion in Han Women Population. Gynecol Obstet Invest 2015; 81:238-43. [PMID: 26465877 DOI: 10.1159/000439531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 08/12/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND To determine whether a specific mitochondrial DNA (mtDNA) haplogroup is implicated in the pathogenesis of intrauterine adhesion (IUA). METHODS Peripheral blood samples were collected from 486 women with (case group, n = 154) and without IUA (control group, n = 332) at the Women's Hospital, Zhejiang University School of Medicine. Genomic DNA was extracted from the blood, and the mtDNA haplogroups of Han women M, N and R were determined by sequencing hypervariable mtDNA segments and testing diagnostic polymorphisms in the mtDNA coding region. RESULTS Women with mtDNA haplogroup R had an independently increased genetic risk factor for IUA with an OR 1.77 (95% CI 1.16-2.70, p = 0.009) compared with women without. Moreover, repeated intrauterine surgery within 1 month and number of intrauterine operations were both significantly associated with IUA (p < 0.001). CONCLUSIONS These results suggest that mtDNA haplogroup R, one of the main mtDNA haplogroups in Han population, is a strong independent genetic risk factor for women with IUA.
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Affiliation(s)
- Jing Zhang
- Department of Gynecology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Mitochondrial DNA Haplogroup A Decreases the Risk of Drug Addiction but Conversely Increases the Risk of HIV-1 Infection in Chinese Addicts. Mol Neurobiol 2015; 53:3873-3881. [PMID: 26162319 DOI: 10.1007/s12035-015-9323-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/24/2015] [Indexed: 01/19/2023]
Abstract
Drug addiction is one of the most serious social problems in the world today and addicts are always at a high risk of acquiring HIV infection. Mitochondrial impairment has been reported in both drug addicts and in HIV patients undergoing treatment. In this study, we aimed to investigate whether mitochondrial DNA (mtDNA) haplogroup could affect the risk of drug addiction and HIV-1 infection in Chinese. We analyzed mtDNA sequence variations of 577 Chinese intravenous drug addicts (289 with HIV-1 infection and 288 without) and compared with 2 control populations (n = 362 and n = 850). We quantified the viral load in HIV-1-infected patients with and without haplogroup A status and investigated the potential effect of haplogroup A defining variants m.4824A > G and m.8794C > T on the cellular reactive oxygen species (ROS) levels by using an allotopic expression assay. mtDNA haplogroup A had a protective effect against drug addiction but appeared to confer an increased risk of HIV infection in addicts. HIV-1-infected addicts with haplogroup A had a trend for a higher viral load, although the mean viral load was similar between carriers of haplogroup A and those with other haplogroup. Hela cells overexpressing allele m.8794 T showed significantly decreased ROS levels as compared to cells with the allele m.8794C (P = 0.03). Our results suggested that mtDNA haplogroup A might protect against drug addiction but increase the risk of HIV-1 infection. The contradictory role of haplogroup A might be caused by an alteration in mitochondrial function due to a particular mtDNA ancestral variant.
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Hulgan T, Samuels DC, Bush W, Ellis RJ, Letendre SL, Heaton RK, Franklin DR, Straub P, Murdock DG, Clifford DB, Collier AC, Gelman BB, Marra CM, McArthur JC, McCutchan JA, Morgello S, Simpson DM, Grant I, Kallianpur AR. Mitochondrial DNA Haplogroups and Neurocognitive Impairment During HIV Infection. Clin Infect Dis 2015; 61:1476-84. [PMID: 26129753 DOI: 10.1093/cid/civ527] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/22/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Neurocognitive impairment (NCI) remains an important complication in persons infected with human immunodeficiency virus (HIV). Ancestry-related mitochondrial DNA (mtDNA) haplogroups have been associated with outcomes of HIV infection and combination antiretroviral therapy (CART), and with neurodegenerative diseases. We hypothesize that mtDNA haplogroups are associated with NCI in HIV-infected adults and performed a genetic association study in the CNS HIV Antiretroviral Therapy Effects Research (CHARTER) cohort. METHODS CHARTER is an observational study of ambulatory HIV-infected adults. Haplogroups were assigned using mtDNA sequence, and principal components were derived from ancestry-informative nuclear DNA variants. Outcomes were cross-sectional global deficit score (GDS) as a continuous measure, GDS impairment (GDS ≥ 0.50), and HIV-associated neurocognitive disorder (HAND) using international criteria. Multivariable models were adjusted for comorbidity status (incidental vs contributing), current CART, plasma HIV RNA, reading ability, and CD4 cell nadir. RESULTS Haplogroups were available from 1027 persons; median age 43 years, median CD4 nadir 178 cells/mm(3), 72% on CART, and 46% with HAND. The 102 (9.9%) persons of genetically determined admixed Hispanic ancestry had more impairment by GDS or HAND than persons of European or African ancestry (P < .001 for all). In multivariate models including persons of admixed Hispanic ancestry, those with haplogroup B had lower GDS (β = -0.34; P = .008) and less GDS impairment (odds ratio = 0.16; 95% confidence interval, .04, .63; P = .009) than other haplogroups. There were no significant haplogroup associations among persons of European or African ancestry. CONCLUSIONS In these mostly CART-treated persons, mtDNA haplogroup B was associated with less NCI among persons of genetically determined Hispanic ancestry. mtDNA variation may represent an ancestry-specific factor influencing NCI in HIV-infected persons.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Susan Morgello
- Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Igor Grant
- University of California-San Diego, California
| | - Asha R Kallianpur
- Cleveland Clinic Foundation/Lerner Research Institute and Cleveland Clinic Lerner College of Medicine, Ohio
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