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Todosenko N, Khaziakhmatova O, Malashchenko V, Yurova K, Bograya M, Beletskaya M, Vulf M, Gazatova N, Litvinova L. Mitochondrial Dysfunction Associated with mtDNA in Metabolic Syndrome and Obesity. Int J Mol Sci 2023; 24:12012. [PMID: 37569389 PMCID: PMC10418437 DOI: 10.3390/ijms241512012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Metabolic syndrome (MetS) is a precursor to the major health diseases associated with high mortality in industrialized countries: cardiovascular disease and diabetes. An important component of the pathogenesis of the metabolic syndrome is mitochondrial dysfunction, which is associated with tissue hypoxia, disruption of mitochondrial integrity, increased production of reactive oxygen species, and a decrease in ATP, leading to a chronic inflammatory state that affects tissues and organ systems. The mitochondrial AAA + protease Lon (Lonp1) has a broad spectrum of activities. In addition to its classical function (degradation of misfolded or damaged proteins), enzymatic activity (proteolysis, chaperone activity, mitochondrial DNA (mtDNA)binding) has been demonstrated. At the same time, the spectrum of Lonp1 activity extends to the regulation of cellular processes inside mitochondria, as well as outside mitochondria (nuclear localization). This mitochondrial protease with enzymatic activity may be a promising molecular target for the development of targeted therapy for MetS and its components. The aim of this review is to elucidate the role of mtDNA in the pathogenesis of metabolic syndrome and its components as a key component of mitochondrial dysfunction and to describe the promising and little-studied AAA + LonP1 protease as a potential target in metabolic disorders.
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Affiliation(s)
- Natalia Todosenko
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Olga Khaziakhmatova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Vladimir Malashchenko
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Kristina Yurova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Maria Bograya
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Maria Beletskaya
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Maria Vulf
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Natalia Gazatova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
| | - Larisa Litvinova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236001 Kaliningrad, Russia; (N.T.); (O.K.); (V.M.); (K.Y.); (M.B.); (M.B.); (M.V.); (N.G.)
- Laboratory of Cellular and Microfluidic Technologies, Siberian State Medical University, 634050 Tomsk, Russia
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O’Neill KN, Aubrey E, Howe LD, Stergiakouli E, Rodriguez S, Kearney PM, O’Keeffe LM. Mitochondrial DNA haplogroups and trajectories of cardiometabolic risk factors during childhood and adolescence: A prospective cohort study. PLoS One 2023; 18:e0284226. [PMID: 37043466 PMCID: PMC10096512 DOI: 10.1371/journal.pone.0284226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 03/27/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND Mitochondria are organelles responsible for converting glucose into energy. Mitochondrial DNA is exclusively maternally inherited. The role of mitochondrial DNA haplogroups in the aetiology of cardiometabolic disease risk is not well understood. METHODS Sex-specific associations between common European mitochondrial DNA haplogroups (H, U, J, T, K, V, W, I and X) and trajectories of cardiometabolic risk factors from birth to 18 years were examined in a prospective cohort. Cardiometabolic risk factors measured from birth/mid-childhood to 18 years included body mass index (BMI), fat and lean mass, systolic and diastolic blood pressure, pulse rate, high-density lipoprotein cholesterol (HDL-c), non-HDL-c and triglycerides. Fractional polynomial and linear spline multilevel models explored the sex-specific association between haplogroups and risk factor trajectories. RESULTS Among a total of 7,954 participants with 79,178 repeated measures per outcome, we found no evidence that haplogroups U, T, J, K and W were associated with cardiometabolic risk factors compared to haplogroup H. In females, haplogroup V was associated with 4.0% (99% CI: -7.5, -0.6) lower BMI at age one but associations did not persist at age 18. Haplogroup X was associated with 1.3kg (99% CI: -2.5, -0.2) lower lean mass at age 9 which persisted at 18. Haplogroup V and X were associated with 9.3% (99% CI: -0.4, 19.0) and 16.4% (99% CI: -0.5,33.3) lower fat mass at age 9, respectively, although confidence intervals spanned the null and associations did not persist at 18. In males, haplogroup I was associated with 2.4% (99% CI: -0.5, 5.3) higher BMI at age 7; widening to 5.1% (99% CI: -0.5, 10.6) at 18 with confidence intervals spanning the null. CONCLUSIONS Our study demonstrated little evidence of sex-specific associations between mitochondrial DNA haplogroups and cardiometabolic risk factors.
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Affiliation(s)
- Kate N. O’Neill
- School of Public Health, University College Cork, Cork, Ireland
| | - Emily Aubrey
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | - Laura D. Howe
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | - Evie Stergiakouli
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | - Santiago Rodriguez
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | | | - Linda M. O’Keeffe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
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Santander-Lucio H, Totomoch-Serra A, Muñoz MDL, García-Hernández N, Pérez-Ramírez G, Valladares-Salgado A, Pérez-Muñoz AA. Variants in the Control Region of Mitochondrial Genome Associated with type 2 Diabetes in a Cohort of Mexican Mestizos. Arch Med Res 2023; 54:113-123. [PMID: 36792418 DOI: 10.1016/j.arcmed.2022.12.014] [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: 07/11/2022] [Revised: 11/09/2022] [Accepted: 12/20/2022] [Indexed: 02/15/2023]
Abstract
BACKGROUND According to the International Diabetes Federation, Mexico is seventh place in the prevalence of type 2 diabetes (T2D) worldwide. Mitochondrial DNA variant association studies in multifactorial diseases like T2D are scarce in Mexican populations. AIM OF THE STUDY The objective of this study was to analyze the association between 18 variants in the mtDNA control region and T2D and related metabolic traits in a Mexican mestizo population from Mexico City. METHODS This study included 1001 participants divided into 477 cases with T2D and 524 healthy controls aged between 42 and 62 years and 18 mtDNA variants with frequencies >15%. RESULTS Association analyses matched by age and sex showed differences in the distribution between cases and controls for variants m.315_316insC (p = 1.18 × 10-6), m.489T>C (p = 0.009), m.16362T>C (p = 0.001), and m.16519T>C (p = 0.004). The associations between T2D and variants m.315_316ins (OR = 6.13, CI = 3.42-10.97, p = 1.97 × 10-6), m.489T>C (OR = 1.45, CI = 1.00-2.11, p = 0.006), m.16362T>C (OR = 2.17, CI = 1.57-3.00, p = 0.001), and m.16519T>C (OR = 1.69, CI = 1.23-2.33, p = 0.006) were significant after performing logistic regression models adjusted for age, sex, and diastolic blood pressure. Metabolic traits in the control group through linear regressions, adjusted for age, sex and BMI, and corrected for multiple comparisons showed nominal association between glucose and variants m.263A>G (p <0.050), m.16183A>C (p <0.010), m.16189T>C (p <0.020), and m.16223C>T (p <0.024); triglycerides, and cholesterol and variant m.309_310insC (p <0.010 and p <0.050 respectively); urea, and creatinine, and variant m.315_316insC (p <0.007, and p <0.004 respectively); diastolic blood pressure and variants m.235A>G (p <0.016), m.263A>G (p <0.013), m.315_316insC (p <0.043), and m.16111C>T (p <0.022). CONCLUSION These results demonstrate a strong association between variant m.315_316insC and T2D and a nominal association with T2D traits.
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Affiliation(s)
- Heriberto Santander-Lucio
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
| | - Armando Totomoch-Serra
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México; Departamento de Electrofisiología, Instituto Nacional de Cardiología, Ignacio Chávez, Ciudad de México, México
| | - María de Lourdes Muñoz
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México.
| | - Normand García-Hernández
- Unidad de Investigación Médica en Genética Humana, Hospital de Pediatría, Dr. Silvestre Frenk Freud, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México, México
| | - Gerardo Pérez-Ramírez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
| | - Adán Valladares-Salgado
- Unidad de Investigación Médica en Bioquímica, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México, México
| | - Ashael Alfredo Pérez-Muñoz
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México; Universidad Anáhuac México Norte, Ciudad de México, México
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Huang Q, Liu Y, Lei W, Liang J, Wang Y, Zheng M, Huang X, Liu Y, Huang K, Huang M. Detecting mitochondrial mutations associated with aminoglycoside ototoxicity by noninvasive prenatal testing. J Clin Lab Anal 2022; 37:e24827. [PMID: 36579624 PMCID: PMC9833975 DOI: 10.1002/jcla.24827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/11/2022] [Accepted: 12/18/2022] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES Numerous diseases and disorders are associated with mitochondrial DNA (mtDNA) mutations, among which m.1555A > G and m.1494C > T mutations in the 12 S ribosomal RNA gene contribute to aminoglycoside-induced and nonsyndromic hearing loss worldwide. METHODS A total of 76,842 qualified non-invasive prenatal (NIPT) samples were subjected to mtDNA mutation and haplogroup analysis. RESULTS We detected 181 m.1555A > G and m.1494C > T mutations, 151 of which were subsequently sequenced for full-length mitochondrial genome verification. The positive predictive values for the m.1555A > G and m.1494C > T mutations were 90.78% and 90.00%, respectively, a performance comparable to that attained with newborn hearing screening. Furthermore, mitochondrial haplogroup analysis revealed that the 12 S rRNA 1555A > G mutation was enriched in sub-haplotype D5[p = 0, OR = 4.6706(2.81-7.78)]. CONCLUSIONS Our findings indicate that the non-invasive prenatal testing of cell-free DNA obtained from maternal plasma can successfully detect m.1555A > G and m.1494C > T mutations.
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Affiliation(s)
- Quanfei Huang
- Institute of Clinical Pharmacology, School of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhouChina
| | - Yanhui Liu
- Dongguan Maternal and Child Health HospitalDongguanChina,Dongguan maternal and Child Health Hospital Affiliated to Southern Medical UniversityDongguanChina
| | - Wei Lei
- CapitalBio Genomics Co., Ltd.DongguanChina,CapitalBio Technology Co., Ltd.BeijingChina
| | - Jiajie Liang
- Dongguan Maternal and Child Health HospitalDongguanChina,Dongguan maternal and Child Health Hospital Affiliated to Southern Medical UniversityDongguanChina
| | - Yang Wang
- CapitalBio Genomics Co., Ltd.DongguanChina,CapitalBio Technology Co., Ltd.BeijingChina
| | - Minhua Zheng
- Dongguan Maternal and Child Health HospitalDongguanChina,Dongguan maternal and Child Health Hospital Affiliated to Southern Medical UniversityDongguanChina
| | - Xiaoyan Huang
- CapitalBio Genomics Co., Ltd.DongguanChina,CapitalBio Technology Co., Ltd.BeijingChina
| | - Yuanru Liu
- CapitalBio Technology Co., Ltd.BeijingChina,Guangdong CapitalBio Medical LaboratoryDongguanChina
| | - Kaisheng Huang
- CapitalBio Technology Co., Ltd.BeijingChina,Guangdong CapitalBio Medical LaboratoryDongguanChina
| | - Min Huang
- Institute of Clinical Pharmacology, School of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhouChina
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Jia M, Li Q, Zhang T, Dong B, Liang X, Fu S, Yu J. Genetic Diversity Analysis of the Chinese Daur Ethnic Group in Heilongjiang Province by Complete Mitochondrial Genome Sequencing. Front Genet 2022; 13:919063. [PMID: 35801081 PMCID: PMC9253502 DOI: 10.3389/fgene.2022.919063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/12/2022] [Indexed: 11/30/2022] Open
Abstract
Mitochondrial DNA (mtDNA) has the characteristics of maternal inheritance, high mutation rate, high copy number, and no recombination. As the most powerful tool for studying the origin and evolution of modern humans, mtDNA has great significance in the research of population genetics and evolutionary genetics. Here, we provide new insights into the maternal genetic history of the Daur ethnic group by generating complete mitochondrial genomes from a total of 146 Daur individuals in China. We also collected the published complete mitochondrial genome sequences of 5,094 individuals from 56 worldwide populations as reference data to further explore the matrilineal genetic landscape of the Daur ethnic group. First, the haplotype diversity was 0.9943 ± 0.0019 and nucleotide diversity was 0.0428 ± 0.0210. The neutrality tests of the Daur group showed significant negative values and the mismatch distribution curve was obviously distributed in a unimodal pattern. The results showed that the Daur ethnic group has high genetic diversity and may have experienced recent population expansion. In addition, the main haplogroups of the Daur population were haplogroup D (31.51%), M* (20.55%), C (10.28%), F (7.53%), and B (6.85%), all of which were prevalent in northern China. It probably implies the northern Chinese origin of the Daur population. The PCA, FST, and phylogenetic analysis results indicated that the Daur group formed a cluster with East Asian populations, and had few genetic differences with the populations in northern China. More importantly, we found that disease-related mutation sites of the mitochondrial genome may be related to ethnic groups, which may have important implications for the prevention and occurrence of specific diseases. Overall, this study revealed the complexity and diversity of the matrilineal genetic background of the Daur ethnic group. Meanwhile, it provided meaningful data for the research on the diversity of the human genome.
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Affiliation(s)
- Mansha Jia
- Scientific Research Centre, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiuyan Li
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
- Editorial Department of International Journal of Genetics, Harbin Medical University, Harbin, China
| | - Tingting Zhang
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
| | - Bonan Dong
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
| | - Xiao Liang
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
| | - Songbin Fu
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
- *Correspondence: Songbin Fu, ; Jingcui Yu,
| | - Jingcui Yu
- Scientific Research Centre, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
- *Correspondence: Songbin Fu, ; Jingcui Yu,
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Ludwig-Słomczyńska AH, Rehm M. Mitochondrial genome variations, mitochondrial-nuclear compatibility, and their association with metabolic diseases. Obesity (Silver Spring) 2022; 30:1156-1169. [PMID: 35491673 DOI: 10.1002/oby.23424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/15/2022] [Accepted: 02/21/2022] [Indexed: 11/10/2022]
Abstract
Two genomes regulate the energy metabolism of eukaryotic cells: the nuclear genome, which codes for most cellular proteins, and the mitochondrial genome, which, together with the nuclear genome, coregulates cellular bioenergetics. Therefore, mitochondrial genome variations can affect, directly or indirectly, all energy-dependent cellular processes and shape the metabolic state of the organism. This review provides a current and up-to-date overview on how codependent these two genomes are, how they appear to have coevolved, and how variations within the mitochondrial genome might be associated with the manifestation of metabolic diseases. This review summarizes and structures results obtained from epidemiological studies that identified links between mitochondrial haplogroups and individual risks for developing obesity and diabetes. This is complemented by findings on the compatibility of mitochondrial and nuclear genomes and cellular bioenergetic fitness, which have been acquired from well-controlled studies in conplastic animal models. These elucidate, more mechanistically, how single-nucleotide variants can influence cellular metabolism and physiology. Overall, it seems that certain mitochondrial genome variations negatively affect mitochondrial-nuclear compatibility and are statistically linked with the onset of metabolic diseases, whereas, for others, greater uncertainty exists, and additional research into this exciting field is required.
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Affiliation(s)
| | - Markus Rehm
- Institute of Cell Biology and Immunology, University of Stuttgart, Stuttgart, Germany
- Stuttgart Research Center Systems Biology, University of Stuttgart, Stuttgart, Germany
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Liu A, Wei Q, Lin H, Ding Y, Sun YV, Zhao D, He J, Ma Z, Li F, Zhou S, Chen X, Shen W, Gao M, He N. Baseline Characteristics of Mitochondrial DNA and Mutations Associated With Short-Term Posttreatment CD4+T-Cell Recovery in Chinese People With HIV. Front Immunol 2022; 12:793375. [PMID: 34970271 PMCID: PMC8712318 DOI: 10.3389/fimmu.2021.793375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/16/2021] [Indexed: 11/25/2022] Open
Abstract
Background Mitochondrial DNA (mtDNA) profiles and contributions of mtDNA variants to CD4+T-cell recovery in Euramerican people living with HIV (PLWH) may not be transferred to East-Asian PLWH, highlighting the need to consider more regional studies. We aimed to identify mtDNA characteristics and mutations that explain the variability of short-term CD4+T-cell recovery in East-Asian PLWH. Method Eight hundred fifty-six newly reported antiretroviral therapy (ART)-naïve Chinese PLWH from the Comparative HIV and Aging Research in Taizhou (CHART) cohort (Zhejiang Province, Eastern China) were enrolled. MtDNA was extracted from peripheral whole blood of those PLWH at HIV diagnosis, amplified, and sequenced using polymerase chain reaction and gene array. Characterization metrics such as mutational diversity and momentum were developed to delineate baseline mtDNA mutational patterns in ART-naïve PLWH. The associations between mtDNA genome-wide single nucleotide variants and CD4+T-cell recovery after short-term (within ~48 weeks) ART in 724 PLWH were examined using bootstrapping median regressions. Results Of 856 participants, 74.18% and 25.82% were male and female, respectively. The median age was 37 years; 94.51% were of the major Han ethnicity, and 69.04% and 28.62% were of the heterosexual and homosexual transmission, respectively. We identified 2,352 types of mtDNA mutations and mtDNA regions D-loop, ND5, CYB, or RNR1 with highest mutational diversity or volume. Female PLWH rather than male PLWH at the baseline showed remarkable age-related uptrends of momentum and mutational diversity as well as correlations between CD4+T <200 (cells/μl) and age-related uptrends of mutational diversity in many mtDNA regions. After adjustments of important sociodemographic and clinical variables, m.1005T>C, m.1824T>C, m.3394T>C, m.4491G>A, m.7828A>G, m.9814T>C, m.10586G>A, m.12338T>C, m.13708G>A, and m.14308T>C (at the Bonferroni-corrected significance) were negatively associated with short-term CD4+T-cell recovery whereas m.93A>G, m.15218A>G, and m.16399A>G were positively associated with short-term CD4+T-cell recovery. Conclusion Our baseline mtDNA characterization stresses the attention to East-Asian female PLWH at risk of CD4+T-cell loss-related aging and noncommunicable chronic diseases. Furthermore, mtDNA variants identified in regression analyses account for heterogeneity in short-term CD4+T-cell recovery of East-Asian PLWH. These results may help individualize the East-Asian immune recovery strategies under complicated HIV management caused by CD4+T-cell loss.
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Affiliation(s)
- Anni Liu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.,Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, United States
| | - Qian Wei
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Haijiang Lin
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.,Department of AIDS/STD Control and Prevention, Taizhou City Center for Disease Control and Prevention, Taizhou, China
| | - Yingying Ding
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Yan V Sun
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, United States.,Department of Biomedical Informatics, School of Medicine, Emory University, Atlanta, GA, United States
| | - Dan Zhao
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Jiayu He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Zhonghui Ma
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Feihu Li
- School of Mathematical Sciences, Fudan University, Shanghai, China
| | - Sujuan Zhou
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Xiaoxiao Chen
- Department of AIDS/STD Control and Prevention, Taizhou City Center for Disease Control and Prevention, Taizhou, China
| | - Weiwei Shen
- Department of AIDS/STD Control and Prevention, Taizhou City Center for Disease Control and Prevention, Taizhou, China
| | - Meiyang Gao
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
| | - Na He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.,Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China.,Key Laboratory of Health Technology Assessment, National Commission of Health, Fudan University, Shanghai, China
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Abstract
Polycystic ovary syndrome (PCOS) is a common endocrinopathy in women of reproductive age. Although its essential clinical manifestation includes a plethora of symptoms and signs, which largely reflects the underlying hyperandrogenism, oligo/anovulation, and polycystic ovarian morphology, PCOS may also be associated with many metabolic derangements. These metabolic derangements happen to overlap with many of the core constituents of the metabolic syndrome (MBS)—increased insulin resistance, central obesity, and dyslipidemia. The two disorders also display similarly increased risks for certain metabolic and vascular diseases, such as type 2 diabetes mellitus, hypertension, and cardiovascular diseases. Due to the many similarities between metabolic syndrome and PCOS, this review aims to examine the evidence concerning the overlapping features, the risks for comorbidities, possible shared mechanisms, and treatment strategies in patients with coexisting PCOS and MBS.
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Affiliation(s)
- Yun-Chiao Hsieh
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Po-Kai Yang
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
- College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Mei-Jou Chen
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
- College of Medicine, National Taiwan University, Taipei, Taiwan
- Livia ShangYu Wan Chair Professor of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
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Singh L, Atilano SR, Jager MJ, Kenney MC. Mitochondrial DNA polymorphisms and biogenesis genes in primary and metastatic uveal melanoma cell lines. Cancer Genet 2021; 256-257:91-99. [PMID: 34082186 DOI: 10.1016/j.cancergen.2021.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/21/2021] [Accepted: 05/10/2021] [Indexed: 11/17/2022]
Abstract
PURPOSE This study was designed to identify mitochondrial (mt) DNA variations in primary and metastatic uveal melanoma (UM) cell lines and their relation with cell metabolism to gain insight into metastatic progression. METHOD The entire mtDNA genomes were sequenced using Sanger sequencing from two primary UM cell lines (92.1 and MEL270) and two cell lines (OMM2.3 and OMM2.5) derived from liver metastases of the MEL270 patient. The mtDNA copy numbers determined by the ratio of nDNA versus mtDNA. qRT-PCR was used to evaluate expression levels of mitochondrial biogenesis genes. RESULTS Sequencing showed that cell line MEL270 and metastases-derived OMM2.3 and OMM2.5 cell lines had homoplasmic single nucleotide polymorphisms (SNPs) representing J1c7a haplogroup, whereas 92.1 cells had mtDNA H31a haplogroup. mtDNA copy numbers were significantly higher in primary cell lines. The metastatic UM cells showed down-regulation of POLG, TFAM, NRF-1 and SIRT1 compared to their primary MEL270 cells. PGC-1α was downregulated in 92.1 and upregulated in MEL270, OMM2.3 and OMM2.5. CONCLUSIONS Our finding suggests that within metastatic cells, the heteroplasmic SNPs, copy numbers and mitochondrial biogenesis genes are modulated differentially compared to their primary UM cells. Therefore, investigating pathogenic mtDNA variants associated with cancer metabolic susceptibility may provide future therapeutic strategies in metastatic UM.
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Affiliation(s)
- Lata Singh
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, United States; Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
| | - Shari R Atilano
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, United States
| | - Martine J Jager
- Department of Ophthalmology, Leiden University Medical Center, Leiden, the Netherlands
| | - M Cristina Kenney
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, United States; Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, United States.
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10
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Erlandson KM, Wu K, Lake JE, Samuels DC, Bares SH, Tassiopoulos K, Koethe JR, Brown TT, Leonard M, Benson CA, Haas DW, Hulgan T. Mitochondrial DNA haplogroups and weight gain following switch to integrase strand transfer inhibitor-based antiretroviral therapy. AIDS 2021; 35:439-445. [PMID: 33252493 PMCID: PMC7951953 DOI: 10.1097/qad.0000000000002771] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Integrase strand transfer inhibitor (INSTI)-based antiretroviral therapy (ART) has been associated with excess weight gain in some adults, which may be influenced by genetic factors. We assessed mitochondrial DNA (mtDNA) haplogroups and weight gain following switch to INSTI-based ART. METHODS All AIDS Clinical Trials Group A5001 and A5322 participants with mtDNA genotyping who switched to INSTI were included. mtDNA haplogroups were derived from prior genotyping algorithms. Race/ethnicity-stratified piecewise linear mixed effects models assessed the relationship between mtDNA haplogroup and weight change slope differences before and after switch to INSTI. RESULTS A total of 291 adults switched to INSTI: 78% male, 50% non-Hispanic White, 28% non-Hispanic Black, and 22% Hispanic. The most common European haplogroups were H [n = 66 (45%)] and UK [32 (22%)]. Non-H European haplogroups had a significant increase in weight slope after the switch. This difference was greatest among non-H clade UK on INSTI-based regimens that included tenofovir alafenamide (TAF) [3.67 (95% confidence interval 1.12, 6.21) kg/year; P = 0.005]. Although small sample size limited analyses among non-Hispanic Black and Hispanic persons, similarly significant weight gain was seen among the most common African haplogroup, L3 [n = 29 (39%); slope difference 4.93 (1.54, 8.32) kg/year, P = 0.005], after switching to TAF-containing INSTI-based ART. CONCLUSION Those in European mtDNA haplogroup clade UK and African haplogroup L3 had significantly greater weight gain after switching to INSTI-based ART, especially those receiving TAF. Additional studies in large and diverse populations are needed to clarify the mechanisms and host risk factors for weight gain after switching to INSTI-based ART, with and without TAF.
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Affiliation(s)
| | - Kunling Wu
- Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Jordan E. Lake
- University of Texas Health Science Center at Houston, Houston, TX, USA
| | | | - Sara H. Bares
- University of Nebraska Medical Center, Omaha, NE, USA
| | | | - John R. Koethe
- Vanderbilt University Medical Center, Nashville, TN, USA
| | | | | | | | - David W. Haas
- Vanderbilt University Medical Center, Nashville, TN, USA
- Meharry Medical College, Nashville, TN, USA
| | - Todd Hulgan
- Vanderbilt University Medical Center, Nashville, TN, USA
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11
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Wang JL, Ji YC, Fu JF. Novel mitochondrial tRNA Arg 10461A>G mutation in a pedigree with obesity. World J Pediatr 2020; 16:429-431. [PMID: 31953779 DOI: 10.1007/s12519-019-00334-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/30/2019] [Indexed: 01/25/2023]
Affiliation(s)
- Jin-Ling Wang
- Department of Endocrinology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, China
| | - Yan-Chun Ji
- Division of Medical Genetics and Genomics, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, China.,Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jun-Fen Fu
- Department of Endocrinology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, China.
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12
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Du J, Yu S, Wang D, Chen S, Chen S, Zheng Y, Wang N, Chen S, Li J, Shen B. Germline and somatic mtDNA mutation spectrum of rheumatoid arthritis patients in the Taizhou area, China. Rheumatology (Oxford) 2020; 59:2982-2991. [DOI: 10.1093/rheumatology/keaa063] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 01/21/2020] [Indexed: 02/06/2023] Open
Abstract
AbstractObjectiveReactive oxygen species are believed to be involved in the onset of RA, and the association between nuclear-encoded mitochondrial respiratory chain-related variants and RA has recently been revealed. However, little is known about the landscape of mitochondrial DNA (mtDNA) variants in RA.MethodsNext-generation sequencing was conducted to profile mtDNA germline and somatic variants in 124 RA patients and 123 age- and sex-matched healthy controls in the Taizhou area, China. Fisher’s exact test, SKAT and SKAT-O were used for gene-burden tests to investigate RA-related variants of mitochondrial genes. Predictive tools were applied to evaluate the pathogenicity of mtDNA variants, and mtDNA haplogroups were assigned according to mtDNA mutations recorded in PhyloTree database. The frequency distribution of mtDNA haplogroups between the groups was compared using χ2 analysis.ResultsWe identified 467 RA-unique and 341 healthy control-unique mtDNA variants, with 443 common variants. Only MT-ATP6 with a significant burden of variants was identified by Fisher’s exact test, SKAT and SKAT-O, even after Bonferroni adjustment, and the enrichment variants in MT-ATP6 was mainly driven by m.8830C>A, m.8833G>C and m.8843T>A variants. Besides, four frequently low-heteroplasmic variants including the three variants above and m.14135T>G of MT-ND5 were detected in RA only; except for m.8830C>A, they are considered potential pathogenicity based on functional predictions. χ2 analysis before Bonferroni adjustment revealed haplogroup F1/F1a to be negatively associated with RA (P < 0.05).ConclusionThese results profiled the landscape of germline and somatic mtDNA variants in RA and supported the effects of mitochondrial genes on RA.
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Affiliation(s)
- Juping Du
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Sufei Yu
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Donglian Wang
- Department of Clinical Laboratory, Enze Hospital, Taizhou Enze Medical Centre (Group), Luqiao, Taizhou, Zhejiang Province, China
| | - Shuaishuai Chen
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Suyun Chen
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Yufen Zheng
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Na Wang
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Shiyong Chen
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Jun Li
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
| | - Bo Shen
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Taizhou Enze Medical Centre (Group), Linhai
- Department of Clinical Laboratory, Enze Hospital, Taizhou Enze Medical Centre (Group), Luqiao, Taizhou, Zhejiang Province, China
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13
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Genetic and phenotypic landscape of the mitochondrial genome in the Japanese population. Commun Biol 2020; 3:104. [PMID: 32139841 PMCID: PMC7058612 DOI: 10.1038/s42003-020-0812-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 01/30/2020] [Indexed: 12/31/2022] Open
Abstract
The genetic landscape of mitochondrial DNA (mtDNA) has been elusive. By analyzing mtDNA using the whole genome sequence (WGS) of Japanese individuals (n = 1928), we identified 2023 mtDNA variants and high-resolution haplogroups. Frequency spectra of the haplogroups were population-specific and were heterogeneous among geographic regions within Japan. Application of machine learning methods could finely classify the subjects corresponding to the high-digit mtDNA sub-haplogroups. mtDNA had distinct genetic structures from that of nuclear DNA (nDNA), characterized by no distance-dependent linkage disequilibrium decay, sparse tagging of common variants, and the existence of common haplotypes spanning the entire mtDNA. We did not detect any evidence of mtDNA–nDNA (or mtDNA copy number–nDNA) genotype associations. Together with WGS-based mtDNA variant imputation, we conducted a phenome-wide association study of 147,437 Japanese individuals with 99 clinical phenotypes. We observed pleiotropy of mtDNA genetic risk on the five late-onset human complex traits including creatine kinase (P = 1.7 × 10−12). Kenichi Yamamoto et al. report a genetic analysis of mitochondrial DNA (mtDNA) and a phenome-wide association study in Japanese individuals from the BioBank Japan Project. They describe the genetic landscape of the mitochondria and identify pleiotropic mtDNA variants associated with 5 late-onset complex traits.
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14
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Dolinko AH, Chwa M, Atilano SR, Kenney MC. African and Asian Mitochondrial DNA Haplogroups Confer Resistance Against Diabetic Stresses on Retinal Pigment Epithelial Cybrid Cells In Vitro. Mol Neurobiol 2020; 57:1636-1655. [PMID: 31811564 PMCID: PMC7123578 DOI: 10.1007/s12035-019-01834-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 11/12/2019] [Indexed: 01/09/2023]
Abstract
Diabetic retinopathy (DR) is the most common cause of blindness for individuals under the age of 65. This loss of vision can be due to ischemia, neovascularization, and/or diabetic macular edema, which are caused by breakdown of the blood-retina barrier at the level of the retinal pigment epithelium (RPE) and inner retinal vasculature. The prevalence of diabetes and its complications differ between Caucasian-Americans and certain minority populations, such as African-Americans and Asian-Americans. Individuals can be classified by their mitochondrial haplogroups, which are collections of single nucleotide polymorphisms (SNPs) in mitochondrial DNA (mtDNA) representing ancient geographic origins of populations. In this study, we compared the responses of diabetic human RPE cybrids, cell lines containing identical nuclei but mitochondria from either European (maternal European) or maternal African or Asian individuals, to hypoxia and high glucose levels. The African and Asian diabetic ([Afr+Asi]/DM) cybrids showed (1) resistance to both hyperglycemic and hypoxic stresses; (2) downregulation of pro-apoptotic indicator BAX; (3) upregulation of DNA methylation genes, such as DNMT3A and DNMT3B; and (4) resistance to DNA demethylation by the methylation inhibitor 5-Aza-2'-deoxycytidine (5-Aza-dC) compared to European diabetic (Euro/DM) cybrids. Our findings suggest that mitochondria from African and Asian diabetic subjects possess a "metabolic memory" that confers resistance against hyperglycemia, hypoxia, and demethylation, and that this "metabolic memory" can be transferred into the RPE cybrid cell lines in vitro.
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Affiliation(s)
- Andrew H Dolinko
- Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, 92697, USA
- Department of Ophthalmology Research, Gavin Herbert Eye Institute, University of California Irvine, Hewitt Hall, Room 2028, 843 Health Science Road, Irvine, CA, 92697, USA
| | - Marilyn Chwa
- Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - Shari R Atilano
- Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - M Cristina Kenney
- Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, 92697, USA.
- Department of Ophthalmology Research, Gavin Herbert Eye Institute, University of California Irvine, Hewitt Hall, Room 2028, 843 Health Science Road, Irvine, CA, 92697, USA.
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15
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Pozzi A, Dowling DK. The Genomic Origins of Small Mitochondrial RNAs: Are They Transcribed by the Mitochondrial DNA or by Mitochondrial Pseudogenes within the Nucleus (NUMTs)? Genome Biol Evol 2020; 11:1883-1896. [PMID: 31218347 PMCID: PMC6619488 DOI: 10.1093/gbe/evz132] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2019] [Indexed: 02/06/2023] Open
Abstract
Several studies have linked mitochondrial genetic variation to phenotypic modifications; albeit the identity of the mitochondrial polymorphisms involved remains elusive. The search for these polymorphisms led to the discovery of small noncoding RNAs, which appear to be transcribed by the mitochondrial DNA ("small mitochondrial RNAs"). This contention is, however, controversial because the nuclear genome of most animals harbors mitochondrial pseudogenes (NUMTs) of identical sequence to regions of mtDNA, which could alternatively represent the source of these RNAs. To discern the likely contributions of the mitochondrial and nuclear genome to transcribing these small mitochondrial RNAs, we leverage data from six vertebrate species exhibiting markedly different levels of NUMT sequence. We explore whether abundances of small mitochondrial RNAs are associated with levels of NUMT sequence across species, or differences in tissue-specific mtDNA content within species. Evidence for the former would support the hypothesis these RNAs are primarily transcribed by NUMT sequence, whereas evidence for the latter would provide strong evidence for the counter hypothesis that these RNAs are transcribed directly by the mtDNA. No association exists between the abundance of small mitochondrial RNAs and NUMT levels across species. Moreover, a sizable proportion of transcripts map exclusively to the mtDNA sequence, even in species with highest NUMT levels. Conversely, tissue-specific abundances of small mitochondrial RNAs are strongly associated with the mtDNA content. These results support the hypothesis that small mitochondrial RNAs are primarily transcribed by the mitochondrial genome and that this capacity is conserved across Amniota and, most likely, across most metazoan lineages.
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Affiliation(s)
- Andrea Pozzi
- School of Biological Sciences, Monash University, Clayton, Victoria 3800, Australia
| | - Damian K Dowling
- School of Biological Sciences, Monash University, Clayton, Victoria 3800, Australia
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16
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Peculiarities of the m.3243A>G variant in MT-TL1 leave medicine unprecise. Mol Genet Metab Rep 2019; 21:100541. [PMID: 31788424 PMCID: PMC6880004 DOI: 10.1016/j.ymgmr.2019.100541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 11/03/2019] [Indexed: 11/20/2022] Open
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17
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Shi Q, Luan Q, Wang X, Cai Y. Correlation study on mtDNA polymorphisms as potential risk factors in aggressive periodontitis by NGS. Oral Dis 2019; 26:401-408. [PMID: 31715075 DOI: 10.1111/odi.13231] [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: 04/16/2019] [Revised: 10/11/2019] [Accepted: 11/06/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Using next-generation sequencing (NGS) to determine whether aggressive periodontitis is associated with specific mitochondrial polymorphisms. MATERIALS AND METHODS A total of 165 unrelated Han Chinese were enrolled in the study. We analyzed the mitochondrial DNA (mtDNA) in 97 patients with aggressive periodontitis and 68 healthy controls by NGS. The mitochondrial DNA was L-PCR-amplified and subsequently sequenced by an Illumina Genome Analyzer (NGS). Chi-square tests were used to assess the differences between the two groups. In cases of significant difference, multivariate logistic regression models were further used to analyze the association between mtDNA polymorphisms and aggressive periodontitis. RESULTS Significant association was observed between aggressive periodontitis and eight mitochondrial polymorphisms: "8860G-10400C" (OR = 2.828, p = .002), "8701A" (OR = 2.308, p = .005), "12705C-10398A" (OR = 2.683, p = .002), "9540C" (OR = 3.838, p = .001) and "10873T-15043G" (OR = 4.375, p = .001). CONCLUSIONS The pathogenesis of aggressive periodontitis is complicated, and its heredity is not well characterized. Our study was the first to use next-generation sequencing and found that 8860G-10400C, 8701A, 12705C-10398A, 9540C, and 10873T-15043G are associated with aggressive periodontitis in the Han Chinese population.
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Affiliation(s)
- Qiao Shi
- Department of Periodontology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qingxian Luan
- Department of Periodontology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiaoxuan Wang
- Department of Periodontology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yu Cai
- Department of Periodontology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China.,Central Laboratory, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
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18
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Morava E, Kozicz T, Wallace DC. The phenotype modifier: is the mitochondrial DNA background responsible for individual differences in disease severity. J Inherit Metab Dis 2019; 42:3-4. [PMID: 30740738 DOI: 10.1002/jimd.12050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eva Morava
- Department of Clinical Genomics, Center of Individualized Medicine, Rochester, Minnesota
| | - Tamas Kozicz
- Department of Clinical Genomics, Center of Individualized Medicine, Rochester, Minnesota
| | - Douglas C Wallace
- Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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19
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Abstract
Inherited mitochondrial DNA (mtDNA) diseases were discovered 30 years ago, and their characterization has provided a new perspective on the etiology of the common metabolic and degenerative diseases, cancer, and aging. The maternally inherited mtDNA contains 37 critical bioenergetic genes that are present in hundreds of copies per cell, but the 'mitochondrial genome' encompasses an additional 1,000-2,000 nuclear DNA (nDNA) mitochondrial genes. The interaction between these two mitochondrial genetic systems provides explanations for phenomena such as the non-Mendelian transmission of the common 'complex' diseases, age-related disease risk and progression, variable penetrance and expressivity, and gene-environment interactions. Thus, mtDNA genetics contributes to the quantitative and environmental components of human genetics that cannot be explained by Mendelian genetics. Because mtDNA is maternally inherited and cytoplasmic, it has fostered the first germline gene therapy, nuclear transplantation. However, effective interventions are still lacking for existing patients with mitochondrial dysfunction.
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Affiliation(s)
- Douglas C Wallace
- Center for Mitochondrial and Epigenomic Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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