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Płoszaj T, Skoczylas S, Gadzalska K, Jakiel P, Juścińska E, Gorządek M, Robaszkiewicz A, Borowiec M, Zmysłowska A. Screening for Rare Mitochondrial Genome Variants Reveals a Potentially Novel Association between MT-CO1 and MT-TL2 Genes and Diabetes Phenotype. Int J Mol Sci 2024; 25:2438. [PMID: 38397113 PMCID: PMC10889583 DOI: 10.3390/ijms25042438] [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: 12/08/2023] [Revised: 02/07/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
Variations in several nuclear genes predisposing humans to the development of MODY diabetes have been very well characterized by modern genetic diagnostics. However, recent reports indicate that variants in the mtDNA genome may also be associated with the diabetic phenotype. As relatively little research has addressed the entire mitochondrial genome in this regard, the aim of the present study is to evaluate the genetic variations present in mtDNA among individuals susceptible to MODY diabetes. In total, 193 patients with a MODY phenotype were tested with a custom panel with mtDNA enrichment. Heteroplasmic variants were selected for further analysis via further sequencing based on long-range PCR to evaluate the potential contribution of frequent NUMTs (acronym for nuclear mitochondrial DNA) insertions. Twelve extremely rare variants with a potential damaging character were selected, three of which were likely to be the result of NUMTs from the nuclear genome. The variant m.3243A>G in MT-TL1 was responsible for 3.5% of MODY cases in our study group. In addition, a novel, rare, and possibly pathogenic leucine variant m.12278T>C was found in MT-TL2. Our findings also found the MT-CO1 gene to be over-represented in the study group, with a clear phenotype-genotype correlation observed in one family. Our data suggest that heteroplasmic variants in MT-COI and MT-TL2 genes may play a role in the pathophysiology of glucose metabolism in humans.
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Affiliation(s)
- Tomasz Płoszaj
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Sebastian Skoczylas
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Karolina Gadzalska
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Paulina Jakiel
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Ewa Juścińska
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Monika Gorządek
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Agnieszka Robaszkiewicz
- Department of General Biophysics, Institute of Biophysics, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland;
| | - Maciej Borowiec
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
| | - Agnieszka Zmysłowska
- Department of Clinical Genetics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland; (S.S.); (K.G.); (P.J.); (E.J.); (M.G.); (M.B.); (A.Z.)
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Garcia-Gaona E, García-Gregorio A, García-Jiménez C, López-Olaiz MA, Mendoza-Ramírez P, Fernandez-Guzman D, Pillado-Sánchez RA, Soto-Pacheco AD, Yareni-Zuñiga L, Sánchez-Parada MG, González-Santiago AE, Román-Pintos LM, Castañeda-Arellano R, Hernández-Ortega LD, Mercado-Sesma AR, Orozco-Luna FDJ, Villa-Angulo C, Villa-Angulo R, Baptista-Rosas RC. mtDNA Single-Nucleotide Variants Associated with Type 2 Diabetes. Curr Issues Mol Biol 2023; 45:8716-8732. [PMID: 37998725 PMCID: PMC10670651 DOI: 10.3390/cimb45110548] [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: 09/21/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/25/2023] Open
Abstract
Type 2 diabetes (T2D) is a chronic systemic disease with a complex etiology, characterized by insulin resistance and mitochondrial dysfunction in various cell tissues. To explore this relationship, we conducted a secondary analysis of complete mtDNA sequences from 1261 T2D patients and 1105 control individuals. Our findings revealed significant associations between certain single-nucleotide polymorphisms (SNPs) and T2D. Notably, the variants m.1438A>G (rs2001030) (controls: 32 [27.6%], T2D: 84 [72.4%]; OR: 2.46; 95%CI: 1.64-3.78; p < 0.001), m.14766C>T (rs193302980) (controls: 498 [36.9%], T2D: 853 [63.1%]; OR: 2.57, 95%CI: 2.18-3.04, p < 0.001), and m.16519T>C (rs3937033) (controls: 363 [43.4%], T2D: 474 [56.6%]; OR: 1.24, 95%CI: 1.05-1.47, p = 0.012) were significantly associated with the likelihood of developing diabetes. The variant m.16189T>C (rs28693675), which has been previously documented in several studies across diverse populations, showed no association with T2D in our analysis (controls: 148 [13.39] T2D: 171 [13.56%]; OR: 1.03; 95%CI: 0.815-1.31; p = 0.83). These results provide evidence suggesting a link between specific mtDNA polymorphisms and T2D, possibly related to association rules, topological patterns, and three-dimensional conformations associated with regions where changes occur, rather than specific point mutations in the sequence.
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Affiliation(s)
- Enrique Garcia-Gaona
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla 72420, Mexico;
| | - Alhelí García-Gregorio
- Facultad de Enfermería Región Poza Rica-Tuxpan, Universidad Veracruzana, Veracruz 91700, Mexico;
| | - Camila García-Jiménez
- Facultad de Ciencias Médicas y Biológicas “Dr. Ignacio Chávez”, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58000, Mexico;
| | | | - Paola Mendoza-Ramírez
- Facultad de Ciencias Biológicas, Benemérita Universidad Autónoma de Puebla, Puebla 72420, Mexico;
| | | | | | - Axel David Soto-Pacheco
- Facultad de Medicina Extensión Los Mochis, Universidad Autónoma de Sinaloa, Sinaloa 81223, Mexico; (R.A.P.-S.); (A.D.S.-P.)
| | - Laura Yareni-Zuñiga
- Departamento de Ciencias de la Salud-Enfermedad como Proceso Individual, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (L.Y.-Z.); (L.M.R.-P.); (A.R.M.-S.)
| | - María Guadalupe Sánchez-Parada
- Departamento de Ciencias Biomédicas, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (M.G.S.-P.); (A.E.G.-S.); (R.C.-A.); (L.D.H.-O.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
| | - Ana Elizabeth González-Santiago
- Departamento de Ciencias Biomédicas, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (M.G.S.-P.); (A.E.G.-S.); (R.C.-A.); (L.D.H.-O.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
| | - Luis Miguel Román-Pintos
- Departamento de Ciencias de la Salud-Enfermedad como Proceso Individual, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (L.Y.-Z.); (L.M.R.-P.); (A.R.M.-S.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
| | - Rolando Castañeda-Arellano
- Departamento de Ciencias Biomédicas, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (M.G.S.-P.); (A.E.G.-S.); (R.C.-A.); (L.D.H.-O.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
| | - Luis Daniel Hernández-Ortega
- Departamento de Ciencias Biomédicas, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (M.G.S.-P.); (A.E.G.-S.); (R.C.-A.); (L.D.H.-O.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
| | - Arieh Roldán Mercado-Sesma
- Departamento de Ciencias de la Salud-Enfermedad como Proceso Individual, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (L.Y.-Z.); (L.M.R.-P.); (A.R.M.-S.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
| | | | - Carlos Villa-Angulo
- Laboratorio de Bioinformática y Biofotónica, Instituto de Ingeniería Universidad Autónoma de Baja California, Mexicali 21100, Mexico; (C.V.-A.); (R.V.-A.)
| | - Rafael Villa-Angulo
- Laboratorio de Bioinformática y Biofotónica, Instituto de Ingeniería Universidad Autónoma de Baja California, Mexicali 21100, Mexico; (C.V.-A.); (R.V.-A.)
| | - Raúl C. Baptista-Rosas
- Departamento de Ciencias de la Salud-Enfermedad como Proceso Individual, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá 45425, Mexico; (L.Y.-Z.); (L.M.R.-P.); (A.R.M.-S.)
- Centro de Investigación Multidisciplinaria en Salud, Universidad de Guadalajara, Tonalá 45425, Mexico
- Hospital General de Occidente, Secretaría de Salud Jalisco, Zapopan 45170, Mexico
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Xing S, Jiang S, Wang S, Lin P, Sun H, Peng H, Yang J, Kong H, Wang S, Bai Q, Qiu R, Dai W, Yuan J, Ma Y, Yu X, Yao Y, Su J. Association of mitochondrial DNA variation with high myopia in a Han Chinese population. Mol Genet Genomics 2023:10.1007/s00438-023-02036-y. [PMID: 37277661 PMCID: PMC10363046 DOI: 10.1007/s00438-023-02036-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/15/2023] [Indexed: 06/07/2023]
Abstract
High myopia (HM), which is characterized by oxidative stress, is one of the leading causes of visual impairment and blindness across the world. Family and population genetic studies have uncovered nuclear-genome variants in proteins functioned in the mitochondria. However, whether mitochondrial DNA mutations are involved in HM remains unexplored. Here, we performed the first large-scale whole-mitochondrial genome study in 9613 HM cases and 9606 control subjects of Han Chinese ancestry for identifying HM-associated mitochondrial variants. The single-variant association analysis identified nine novel genetic variants associated with HM reaching the entire mitochondrial wide significance level, including rs370378529 in ND2 with an odds ratio (OR) of 5.25. Interestingly, eight out of nine variants were predominantly located in related sub-haplogroups, i.e. m.5261G > A in B4b1c, m.12280A > G in G2a4, m.7912G > A in D4a3b, m.94G > A in D4e1, m.14857 T > C in D4e3, m.14280A > G in D5a2, m.16272A > G in G2a4, m.8718A > G in M71 and F1a3, indicating that the sub-haplogroup background can increase the susceptible risk for high myopia. The polygenic risk score analysis of the target and validation cohorts indicated a high accuracy for predicting HM with mtDNA variants (AUC = 0.641). Cumulatively, our findings highlight the critical roles of mitochondrial variants in untangling the genetic etiology of HM.
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Affiliation(s)
- Shilai Xing
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Siyi Jiang
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Siyu Wang
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Peng Lin
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Haojun Sun
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Hui Peng
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Jiaying Yang
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Hengte Kong
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Sheng Wang
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Qingshi Bai
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Ruowen Qiu
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Wei Dai
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, China
| | - Jian Yuan
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
- National Clinical Research Center for Ocular Disease, Wenzhou, 325027, China
| | - Yunlong Ma
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
- National Clinical Research Center for Ocular Disease, Wenzhou, 325027, China
| | - Xiaoguang Yu
- Institute of PSI Genomics, Wenzhou, 325024, China
| | - Yinghao Yao
- Oujiang Laboratory, Zhejiang Lab for Regenerative Medicine, Vision and Brain Health, Wenzhou, 325101, Zhejiang, China.
| | - Jianzhong Su
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China.
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, China.
- National Clinical Research Center for Ocular Disease, Wenzhou, 325027, China.
- Oujiang Laboratory, Zhejiang Lab for Regenerative Medicine, Vision and Brain Health, Wenzhou, 325101, Zhejiang, China.
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Mezzi N, Messaoud O, Mkaouar R, Zitouna N, Romdhane S, Abdessalem G, Charfeddine C, Maazoul F, Ouerteni I, Hamdi Y, Zaouak A, Mrad R, Abdelhak S, Romdhane L. Spectrum of Genetic Diseases in Tunisia: Current Situation and Main Milestones Achieved. Genes (Basel) 2021; 12:1820. [PMID: 34828426 PMCID: PMC8617973 DOI: 10.3390/genes12111820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/30/2021] [Accepted: 11/03/2021] [Indexed: 02/06/2023] Open
Abstract
Genetic diseases in Tunisia are a real public health problem given their chronicity and the lack of knowledge concerning their prevalence and etiology, and the high rates of consanguinity. Hence, we performed systematic reviews of the literature in order to provide a more recent spectrum of these disorders and to expose the challenges that still exist to tackle these kinds of diseases. A manual textual data mining was conducted using MeSH and PubMed databases. Collected data were classified according to the CIM-10 classification and the transmission mode. The spectrum of these diseases is estimated to be 589 entities. This suggests remarkable progress through the development of biomedical health research activities and building capacities. Sixty percent of the reported disorders are autosomal recessive, which could be explained by the high prevalence of endogamous mating. Congenital malformations (29.54%) are the major disease group, followed by metabolic diseases (22%). Sixty percent of the genetic diseases have a known molecular etiology. We also reported additional cases of comorbidity that seem to be a common phenomenon in our population. We also noticed that epidemiological data are scarce. Newborn and carrier screening was only limited to pilot projects for a few genetic diseases. Collected data are being integrated into a database under construction that will be a valuable decision-making tool. This study provides the current situation of genetic diseases in Tunisia and highlights their particularities. Early detection of the disease is important to initiate critical intervention and to reduce morbidity and mortality.
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Affiliation(s)
- Nessrine Mezzi
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
- Department of Biology, Faculty of Sciences of Bizerte, Université Tunis Carthage, Jarzouna 7021, Tunisia
| | - Olfa Messaoud
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Rahma Mkaouar
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Nadia Zitouna
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Safa Romdhane
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Ghaith Abdessalem
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Cherine Charfeddine
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
- High Institute of Biotechnology of Sidi Thabet, Biotechpole of Sidi Thabet, University of Manouba, Ariana 2080, Tunisia
| | - Faouzi Maazoul
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital, Tunis 1002, Tunisia
| | - Ines Ouerteni
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital, Tunis 1002, Tunisia
| | - Yosr Hamdi
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
- Laboratory of Human and Experimental Pathology, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Anissa Zaouak
- Department of Dermatology, Research Unit Genodermatosis and Cancer LR12SP03, Habib Thameur Hospital, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia
| | - Ridha Mrad
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital, Tunis 1002, Tunisia
| | - Sonia Abdelhak
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Lilia Romdhane
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis 1002, Tunisia
- Department of Biology, Faculty of Sciences of Bizerte, Université Tunis Carthage, Jarzouna 7021, Tunisia
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Zhunina OA, Yabbarov NG, Grechko AV, Starodubova AV, Ivanova E, Nikiforov NG, Orekhov AN. The Role of Mitochondrial Dysfunction in Vascular Disease, Tumorigenesis, and Diabetes. Front Mol Biosci 2021; 8:671908. [PMID: 34026846 PMCID: PMC8138126 DOI: 10.3389/fmolb.2021.671908] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/14/2021] [Indexed: 12/16/2022] Open
Abstract
Mitochondrial dysfunction is known to be associated with a wide range of human pathologies, such as cancer, metabolic, and cardiovascular diseases. One of the possible ways of mitochondrial involvement in the cellular damage is excessive production of reactive oxygen and nitrogen species (ROS and RNS) that cannot be effectively neutralized by existing antioxidant systems. In mitochondria, ROS and RNS can contribute to protein and mitochondrial DNA (mtDNA) damage causing failure of enzymatic chains and mutations that can impair mitochondrial function. These processes further lead to abnormal cell signaling, premature cell senescence, initiation of inflammation, and apoptosis. Recent studies have identified numerous mtDNA mutations associated with different human pathologies. Some of them result in imbalanced oxidative phosphorylation, while others affect mitochondrial protein synthesis. In this review, we discuss the role of mtDNA mutations in cancer, diabetes, cardiovascular diseases, and atherosclerosis. We provide a list of currently described mtDNA mutations associated with each pathology and discuss the possible future perspective of the research.
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Affiliation(s)
- Olga A. Zhunina
- Chemical Biology Department, Russian Research Center for Molecular Diagnostics and Therapy, Moscow, Russia
| | - Nikita G. Yabbarov
- Chemical Biology Department, Russian Research Center for Molecular Diagnostics and Therapy, Moscow, Russia
| | - Andrey V. Grechko
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow, Russia
| | | | - Ekaterina Ivanova
- Department of Basic Research, Skolkovo Innovative Center, Institute for Atherosclerosis Research, Moscow, Russia
| | - Nikita G. Nikiforov
- National Medical Research Center of Cardiology, Institute of Experimental Cardiology, Moscow, Russia
- Institute of Gene Biology, Moscow, Russia
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Institute of Human Morphology, Moscow, Russia
| | - Alexander N. Orekhov
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Institute of Human Morphology, Moscow, Russia
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
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Abstract
BACKGROUND Hearing loss (HL) is a heterogeneous condition that causes partial or complete hearing impairment. Hundreds of variants in more than 60 genes have been reported to be associated with Hereditary HL (HHL). The HHL prevalence is thought to be high in the Arab population; however, the genetic epidemiology of HHL among Arab populations is understudied. This study aimed to systematically analyze the genetic epidemiology of HHL in Arab countries. METHODS We searched four literature databases (PubMed, Scopus, Science Direct, and Web of Science) from the time of inception until January 2019 using broad search terms to capture all the reported epidemiological and genetic data related to Arab patients with HHL. FINDINGS A total of 2,600 citations were obtained; 96 studies met our inclusion criteria. Our search strategy yielded 121,276 individuals who were tested for HL over 52 years (1966-2018), of whom 8,099 were clinically diagnosed with HL and belonged to 16 Arab countries. A total of 5,394 patients and 61 families with HHL were genotyped, of whom 336 patients and 6 families carried 104 variants in 44 genes and were from 17/22 Arab countries. Of these variants, 72 (in 41 genes) were distinctive to Arab patients. Arab patients manifested distinctive clinical phenotypes. The incidence of HHL in the captured studies ranged from 1.20 to 18 per 1,000 births per year, and the prevalence was the highest in Iraq (76.3%) and the lowest in Jordan (1.5%). INTERPRETATION This is the first systematic review to capture the prevalence and spectrum of variants associated with HHL in an Arab population. There appears to be a distinctive clinical picture for Arab patients with HHL, and the range and distribution of variants among Arab patients differ from those noted in other affected ethnic groups.
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Jiang Z, Teng L, Zhang S, Ding Y. Mitochondrial ND1 T4216C and ND2 C5178A mutations are associated with maternally transmitted diabetes mellitus. Mitochondrial DNA A DNA Mapp Seq Anal 2020; 32:59-65. [PMID: 33284036 DOI: 10.1080/24701394.2020.1856101] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Mutations in mitochondrial DNA (mtDNA) are important causes for type 2 diabetes mellitus (T2DM). To investigate the association between mtDNA mutations/variants and diabetes, we reported here clinical, genetic and biochemical characterization of a Chinese pedigree with maternally transmitted T2DM. Using PCR and direct sequencing analysis of mitochondrial genomes from the matrilineal relatives, we identified two potential pathogenic mutations, m.T4216C (p.Y304H) and m.C5178A (p.L237M) in the ND1 and ND2 genes, respectively, together with a set of genetic polymorphisms belonging to the human mitochondrial haplogroup D4b. Moreover, by isolating and analyzing polymononuclear leukocytes generated from the T2DM patients and controls, we identified lower levels of mitochondrial membrane potential and ATP production in T2DM patients than in the controls, in contrast, a significantly higher level of reactive oxygen species was observed in the T2DM patients carrying both of the m.T4216C and m.C5178A mutations (p < 0.05 for all). In addition, the plasma levels of malondialdehyde and 8-hydroxydeoxyguanosine in the T2DM patients markedly increased, while the level of superoxide dismutase decreased (p < 0.05 for all). Taken together, our data indicated that the ND1 T4216C and ND2 C5178A mutations may lead to oxidative stress and impair the mitochondrial function, and this, in turn, might have been involved in the pathogenesis and progression of T2DM in this pedigree. Thus, our study provides novel insight into the pathophysiology of T2DM that is manifested by mitochondrial dysfunction.
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Affiliation(s)
- Zhaochang Jiang
- Department of Pathology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lili Teng
- Department of Geriatric Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shunrong Zhang
- Department of Gerontology, Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yu Ding
- Central Laboratory, Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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8
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Feng Z, Sedeeq M, Daniel A, Corban M, Woolley KL, Condie R, Azimi I, Smith JA, Gueven N. Comparative In Vitro Toxicology of Novel Cytoprotective Short-Chain Naphthoquinones. Pharmaceuticals (Basel) 2020; 13:ph13080184. [PMID: 32784558 PMCID: PMC7463972 DOI: 10.3390/ph13080184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 08/05/2020] [Indexed: 12/15/2022] Open
Abstract
Short-chain quinones (SCQs) have been identified as potential drug candidates against mitochondrial dysfunction, which largely depends on the reversible redox characteristics of the active quinone core. We recently identified 11 naphthoquinone derivatives, 1–11, from a library of SCQs that demonstrated enhanced cytoprotection and improved metabolic stability compared to the clinically used benzoquinone idebenone. Since the toxicity properties of our promising SCQs were unknown, this study developed multiplex methods and generated detailed toxicity profiles from 11 endpoint measurements using the human hepatocarcinoma cell line HepG2. Overall, the toxicity profiles were largely comparable across different assays, with simple standard assays showing increased sensitivity compared to commercial toxicity assays. Within the 11 naphthoquinones tested, the L-phenylalanine derivative 4 consistently demonstrated the lowest toxicity across all assays. The results of this study not only provide useful information about the toxicity features of SCQs but will also enable the progression of the most promising drug candidates towards their clinical use.
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Affiliation(s)
- Zikai Feng
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.S.); (A.D.); (M.C.); (I.A.)
- School of Natural Sciences, University of Tasmania, Hobart, TAS 7005, Australia; (K.L.W.); (R.C.); (J.A.S.)
- Correspondence: (Z.F.); (N.G.)
| | - Mohammed Sedeeq
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.S.); (A.D.); (M.C.); (I.A.)
| | - Abraham Daniel
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.S.); (A.D.); (M.C.); (I.A.)
| | - Monika Corban
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.S.); (A.D.); (M.C.); (I.A.)
| | - Krystel L. Woolley
- School of Natural Sciences, University of Tasmania, Hobart, TAS 7005, Australia; (K.L.W.); (R.C.); (J.A.S.)
| | - Ryan Condie
- School of Natural Sciences, University of Tasmania, Hobart, TAS 7005, Australia; (K.L.W.); (R.C.); (J.A.S.)
| | - Iman Azimi
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.S.); (A.D.); (M.C.); (I.A.)
| | - Jason A. Smith
- School of Natural Sciences, University of Tasmania, Hobart, TAS 7005, Australia; (K.L.W.); (R.C.); (J.A.S.)
| | - Nuri Gueven
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.S.); (A.D.); (M.C.); (I.A.)
- Correspondence: (Z.F.); (N.G.)
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9
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Tabebi M, Safi W, Felhi R, Alila Fersi O, Keskes L, Abid M, Mnif M, Fakhfakh F. The first concurrent detection of mitochondrial DNA m.3243A>G mutation, deletion, and depletion in a family with mitochondrial diabetes. Mol Genet Genomic Med 2020; 8:e1292. [PMID: 32394641 PMCID: PMC7336730 DOI: 10.1002/mgg3.1292] [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: 01/11/2020] [Revised: 04/09/2020] [Accepted: 04/13/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Mitochondrial diabetes (MD) is a rare monogenic form of diabetes and divided into type l and type 2. It is characterized by a strong familial clustering of diabetes with the presence of maternal transmission in conjunction with bilateral hearing impairment in most of the carriers. The most common form of MD is associated with the m.3243A>G mutation in the mitochondrial MT-TL1, but there are also association with a range of other point mutations, deletion, and depletion in mtDNA. METHODS The mitochondrial genome anomalies were investigated in a family with clinical features of MD, which includes a proband presenting severe MD conditions including cardiomyopathy, retinopathy, and psychomotor retardation. RESULTS By investigating the patient's blood leukocytes and skeletal muscle, we identified the m.3243A>G mutation in heteroplasmic state. This mutation was absent in the rest of the family members. In addition, our analysis revealed in the proband a large mtDNA heteroplasmic deletion (~1 kb) and a reduction in mtDNA copy number. CONCLUSION Our study points out, for the first time, a severe phenotypic expression of the m.3243A>G point mutation in association with mtDNA deletion and depletion in MD.
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Affiliation(s)
- Mouna Tabebi
- Molecular and Functional Genetics Laboratory, Faculty of Science of Sfax, University of Sfax, Sfax, Tunisia.,Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Sfax, Tunisia
| | - Wajdi Safi
- Department of Endocrinology Diabetology, CHU Hedi Chaker, Sfax, Tunisia
| | - Rahma Felhi
- Molecular and Functional Genetics Laboratory, Faculty of Science of Sfax, University of Sfax, Sfax, Tunisia
| | - Olfa Alila Fersi
- Molecular and Functional Genetics Laboratory, Faculty of Science of Sfax, University of Sfax, Sfax, Tunisia
| | - Leila Keskes
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Sfax, Tunisia
| | - Mohamed Abid
- Department of Endocrinology Diabetology, CHU Hedi Chaker, Sfax, Tunisia
| | - Mouna Mnif
- Department of Endocrinology Diabetology, CHU Hedi Chaker, Sfax, Tunisia
| | - Faiza Fakhfakh
- Molecular and Functional Genetics Laboratory, Faculty of Science of Sfax, University of Sfax, Sfax, Tunisia
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10
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Mukherjee S, Ghosh A. Molecular mechanism of mitochondrial respiratory chain assembly and its relation to mitochondrial diseases. Mitochondrion 2020; 53:1-20. [PMID: 32304865 DOI: 10.1016/j.mito.2020.04.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/28/2020] [Accepted: 04/07/2020] [Indexed: 12/17/2022]
Abstract
The mitochondrial respiratory chain (MRC) is comprised of ~92 nuclear and mitochondrial DNA-encoded protein subunits that are organized into five different multi-subunit respiratory complexes. These complexes produce 90% of the ATP required for cell sustenance. Specific sets of subunits are assembled in a modular or non-modular fashion to construct the MRC complexes. The complete assembly process is gradually chaperoned by a myriad of assembly factors that must coordinate with several other prosthetic groups to reach maturity, makingthe entire processextensively complicated. Further, the individual respiratory complexes can be integrated intovarious giant super-complexes whose functional roles have yet to be explored. Mutations in the MRC subunits and in the related assembly factors often give rise to defects in the proper assembly of the respiratory chain, which then manifests as a group of disorders called mitochondrial diseases, the most common inborn errors of metabolism. This review summarizes the current understanding of the biogenesis of individual MRC complexes and super-complexes, and explores how mutations in the different subunits and assembly factors contribute to mitochondrial disease pathology.
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Affiliation(s)
- Soumyajit Mukherjee
- Department of Biochemistry, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, India
| | - Alok Ghosh
- Department of Biochemistry, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, India.
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11
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Abstract
Mitochondria play various important roles in energy production, metabolism, and apoptosis. Mitochondrial dysfunction caused by alterations in mitochondrial DNA (mtDNA) can lead to the initiation and progression of cancers and other diseases. These alterations include mutations and copy number variations. Especially, the mutations in D-loop, MT-ND1, and MT-ND5 affect mitochondrial functions and are widely detected in various cancers. Meanwhile, several other mutations have been correlated with muscular and neuronal diseases, especially MT-TL1 is deeply related. These pieces of evidence indicated mtDNA alterations in diseases show potential as a novel therapeutic target. mtDNA repair enzymes are the target for delaying or stalling the mtDNA damage-induced cancer progression and metastasis. Moreover, some mutations reveal a prognosis ability of the drug resistance. Current efforts aim to develop mitochondrial transplantation technique as a direct cure for deregulated mitochondria-associated diseases. This review summarizes the implications of mitochondrial dysfunction in cancers and other pathologies; and discusses the relevance of mitochondria-targeted therapies, along with their contribution as potential biomarkers.
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Affiliation(s)
- Ngoc Ngo Yen Nguyen
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea.,Biomedical Science Institute, Kyung Hee University, Seoul, Republic of Korea
| | - Sung Soo Kim
- Biomedical Science Institute, Kyung Hee University, Seoul, Republic of Korea.,Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Yong Hwa Jo
- Biomedical Science Institute, Kyung Hee University, Seoul, Republic of Korea.,Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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12
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Cardiovascular Manifestations of Mitochondrial Disease. BIOLOGY 2019; 8:biology8020034. [PMID: 31083569 PMCID: PMC6628328 DOI: 10.3390/biology8020034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/13/2019] [Accepted: 04/22/2019] [Indexed: 02/06/2023]
Abstract
Genetic mitochondrial cardiomyopathies are uncommon causes of heart failure that may not be seen by most physicians. However, the prevalence of mitochondrial DNA mutations and somatic mutations affecting mitochondrial function are more common than previously thought. In this review, the pathogenesis of genetic mitochondrial disorders causing cardiovascular disease is reviewed. Treatment options are presently limited to mostly symptomatic support, but preclinical research is starting to reveal novel approaches that may lead to better and more targeted therapies in the future. With better understanding and clinician education, we hope to improve clinician recognition and diagnosis of these rare disorders in order to improve ongoing care of patients with these diseases and advance research towards discovering new therapeutic strategies to help treat these diseases.
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13
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Finsterer J, Zarrouk-Mahjoub S. Variants m.13276G>A in the MT-ND5 and m.8241T>G in the MT-CO2 gene are not responsible for maternally inherited diabetes and deafness. J Diabetes Complications 2017; 31:1638. [PMID: 28890306 DOI: 10.1016/j.jdiacomp.2017.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 08/01/2017] [Indexed: 11/21/2022]
Affiliation(s)
| | - Sinda Zarrouk-Mahjoub
- University of Tunis El Manar and Genomics Platform, Pasteur Institute of Tunis, Tunisia
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14
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Tabebi M, Khabou B, Boukadi H, Ben Hamad M, Ben Rhouma B, Tounsi S, Maalej A, Kamoun H, Keskes-Ammar L, Abid M, Mnif M, Fakhfakh F. Association study of apoptosis gene polymorphisms in mitochondrial diabetes: A potential role in the pathogenicity of MD. Gene 2017; 639:18-26. [PMID: 28987347 DOI: 10.1016/j.gene.2017.09.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/07/2017] [Accepted: 09/27/2017] [Indexed: 12/27/2022]
Abstract
Mitochondrial diabetes (MD) is a heterogeneous disorder characterized by a chronic hyperglycemia and is maternally transmitted. Syndromic MD is a subgroup of MD including diabetic microangiopathy and macroangiopathy, in addition to extrapancreatic disorder. MD is caused by genetic mutations and deletions affecting mitochondrial DNA. This mitochondrial damage initiates apoptosis. In this study, we hypothesized that functional polymorphisms in genes involved in apoptotic pathway could be associated with the development of apoptosis in MD disease and increased its risk. Detection of apoptosis was confirmed on muscle biopsies taken from MD patients using the TUNEL method and the Cytochrome c protein expression level. We genotyped then 11 published SNPs from intrinsic and extrinsic apoptotic pathway and assessed the signification of these polymorphisms in 43 MD patients and 100 healthy controls. We found 10 selected polymorphisms (p53 (rs1042522 and rs17878362), BCL2 (rs2279115), BAX (rs1805419), BAK1 (rs210132 and rs2227925), CASP3 (rs1405937), CASP7 (rs2227310), CASP8 (rs1045485) and CASP10 (rs13006529)) with a potential apoptosis effect in MD patients compared to control population. Specifically, SNPs involved in the intrinsic pathway (p53, BCL2, BAK1 and CASP3) presented the highest risk of apoptosis. Our result proved that apoptosis initiated by mtDNA mutations, can be emphasized by a functional apoptotic polymorphisms associated with high expression of cytochrome c protein and more myofibers with apoptosis in syndromic MD subgroup compared with non-syndromic MD subgroup.
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Affiliation(s)
- Mouna Tabebi
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia.
| | - Bodour Khabou
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia
| | - Hanen Boukadi
- Laboratory of Biopesticides, Centre of Biotechnology of Sfax, University of Sfax, Tunisia
| | - Mariam Ben Hamad
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia
| | - Bochra Ben Rhouma
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia
| | - Slim Tounsi
- Laboratory of Biopesticides, Centre of Biotechnology of Sfax, University of Sfax, Tunisia
| | - Abdellatif Maalej
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia
| | - Hassen Kamoun
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia
| | - Leila Keskes-Ammar
- Human Molecular Genetics Laboratory, Faculty of Medicine of Sfax, University of Sfax, Tunisia
| | - Mohamed Abid
- Department of Endocrinology, University Hospital Hedi Chaker, Sfax, Tunisia
| | - Mouna Mnif
- Department of Endocrinology, University Hospital Hedi Chaker, Sfax, Tunisia
| | - Faiza Fakhfakh
- Department of Life Sciences, Faculty of Science of Sfax, University of Sfax, Tunisia
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