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Poznyak AV, Yakovlev AA, Popov MА, Zhigmitova EB, Sukhorukov VN, Orekhov AN. Atherosclerosis originating from childhood: Specific features. J Biomed Res 2024; 38:233-240. [PMID: 38777340 PMCID: PMC11144930 DOI: 10.7555/jbr.37.20230198] [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: 08/21/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 05/25/2024] Open
Abstract
Atherosclerosis is extremely widespread. Traditionally, it is considered a disease of older people, who most often experience problems with the heart and blood vessels. While much attention from the scientific community has been paid to studying the association between aging and atherosclerosis, as well as its consequences, there is evidence that atherosclerosis occurs at an early age. Atherosclerosis may form both during intrauterine development and in childhood. Nutrition plays an important role in childhood atherosclerosis, along with previous infectious diseases and excess weight of both the child and the mother. In the present review, we examined the development of atherosclerosis and the prerequisites in childhood.
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Affiliation(s)
| | - Alexey A. Yakovlev
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 109240, Russia
| | - Mikhail А. Popov
- Department of Cardiac Surgery, Moscow Regional Research and Clinical Institute, Moscow 129110, Russia
| | - Elena B. Zhigmitova
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow 125315, Russia
| | - Vasily N. Sukhorukov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow 125315, Russia
| | - Alexander N. Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow 125315, Russia
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2
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Ryytty S, Hämäläinen RH. The Mitochondrial m.3243A>G Mutation on the Dish, Lessons from In Vitro Models. Int J Mol Sci 2023; 24:13478. [PMID: 37686280 PMCID: PMC10487608 DOI: 10.3390/ijms241713478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
The m.3243A>G mutation in the tRNA Leu(UUR) gene (MT-TL1) is one of the most common pathogenic point mutations in human mtDNA. Patient symptoms vary widely and the severity of the disease ranges from asymptomatic to lethal. The reason for the high heterogeneity of m.3243A>G-associated disease is still unknown, and the treatment options are limited, with only supportive interventions available. Furthermore, the heteroplasmic nature of the m.3243A>G mutation and lack of specific animal models of mtDNA mutations have challenged the study of m.3243A>G, and, besides patient data, only cell models have been available for studies. The most commonly used cell models are patient derived, such as fibroblasts and induced pluripotent stem cell (iPSC)-derived models, and cybrid models where the mutant DNA is transferred to an acceptor cell. Studies on cell models have revealed cell-type-specific effects of the m.3243A>G mutation and that the tolerance for this mutation varies between cell types and between patients. In this review, we summarize the literature on the effects of m.3243A>G in cell models.
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Affiliation(s)
| | - Riikka H. Hämäläinen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland;
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3
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Cosma J, Russo A, Schino S, Belli M, Mango R, Chiricolo G, Martuscelli E, Mariano EG. Acute myocardial infarction in a patient with MELAS syndrome: a possible link? Minerva Cardiol Angiol 2023; 71:374-380. [PMID: 35767235 DOI: 10.23736/s2724-5683.22.06021-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The mitochondrial encephalomyopathy, lactic acidosis, and stroke (MELAS) syndrome is a mitochondrial disorder, commonly caused by m.3243A>G mutation in the MT-TL1 gene. It encodes for the mitochondrial leucine transfer RNA (tRNA Leu [UUR]), implicated in the translation of proteins involved in the assembly and function of mitochondrial complexes in the electron transport chain. The m.3243A>G mutation determines complex I (CI) deficiency, ultimately leading to NADH accumulation, higher rates of glycolysis in order to compensate for the reduced ATP production and increase in lactates, the end-product of glycolysis. Disruption of the oxidative phosphorylation function with an inability to produce sufficient energy results in multi-organ dysfunction, with high energy demanding cells, such as myocytes and neurons, being the most affected ones. Therefore, MELAS syndrome is characterized by a heterogeneous clinical spectrum. Here we report on a case of a 55-year-old man affected by MELA syndrome with no cardiovascular risk factors. He was admitted to our department because of a non ST-segment elevation myocardial infarction (NSTEMI). A coronary angioplasty of the posterior descending artery and of the left anterior descending artery was realized. Transthoracic echocardiography showed inferior and anterior left ventricular wall hypokinesis together with a moderate left ventricle hypertrophy. Cardiac involvement is reported in about a third of the patients and left ventricular hypertrophy (LVH) is the most common phenotype, with possible dilated cardiomyopathy in end-stage disease; brady- arrhythmias and tachy-arrhythmias are also frequently reported as well as Wolff- Parkinson-White (WPW) syndrome. Organ impairment and clinical manifestations depend on the heteroplasmy level of mutant DNA in cells that can differ among individuals, explaining why some patients present a more severe disease. A clear relationship between MELAS syndrome and atherosclerosis has never been established, however recently advocated. In vitro studies in MELAS patients have shown that higher mitochondrial ROS levels and increased expression of oxidative stress-related genes, as a consequence of complex I deficiency and disrupted electron transport, allow circulating LDL to be promptly oxidized into ox-LDL, contributing to endothelial dysfunction and atherosclerosis plaque formation. In light of the recent evidence suggesting a possible link between mitochondrial disorders and atherosclerosis, we speculate that MELAS syndrome may have played a role in the pathogenesis of coronary artery disease in our patient. Further investigations are needed to confirm a pathogenetic link.
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Affiliation(s)
- Joseph Cosma
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy -
- Department of Cardiology, Saint Martin Private Hospital Center, Caen, France -
| | - Alessandro Russo
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy
| | - Sofia Schino
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy
| | - Martina Belli
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy
| | - Ruggiero Mango
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy
| | - Gaetano Chiricolo
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy
| | | | - Enrica G Mariano
- Department of Cardiology, Tor Vergata University of Rome, Rome, Italy
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4
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Becker PH, Thérond P, Gaignard P. Targeting mitochondrial function in macrophages: A novel treatment strategy for atherosclerotic cardiovascular disease? Pharmacol Ther 2023; 247:108441. [PMID: 37201736 DOI: 10.1016/j.pharmthera.2023.108441] [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: 04/28/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Atherosclerotic cardiovascular disease is a major cause of morbidity and mortality due to chronic arterial injury caused by hyperlipidemia, hypertension, inflammation and oxidative stress. Recent studies have shown that the progression of this disease is associated with mitochondrial dysfunction and with the accumulation of mitochondrial alterations within macrophages of atherosclerotic plaques. These alterations contribute to processes of inflammation and oxidative stress. Among the many players involved, macrophages play a pivotal role in atherogenesis as they can exert both beneficial and deleterious effects due to their anti- and pro-inflammatory properties. Their atheroprotective functions, such as cholesterol efflux and efferocytosis, as well as the maintenance of their polarization towards an anti-inflammatory state, are particularly dependent on mitochondrial metabolism. Moreover, in vitro studies have demonstrated deleterious effects of oxidized LDL on macrophage mitochondrial function, resulting in a switch to a pro-inflammatory state and to a potential loss of atheroprotective capacity. Therefore, preservation of mitochondrial function is now considered a legitimate therapeutic strategy. This review focuses on the potential therapeutic strategies that could improve the mitochondrial function of macrophages, enabling them to maintain their atheroprotective capacity. These emerging therapies could play a valuable role in counteracting the progression of atherosclerotic lesions and possibly inducing their regression.
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Affiliation(s)
- Pierre-Hadrien Becker
- Université Paris-Saclay, EA 7357, Lipides: Systèmes Analytiques et Biologiques, Châtenay-Malabry 92296, France; Hôpital Bicêtre, AP-HP, Laboratoire de Biochimie, Le Kremlin Bicêtre 94270, France.
| | - Patrice Thérond
- Université Paris-Saclay, EA 7357, Lipides: Systèmes Analytiques et Biologiques, Châtenay-Malabry 92296, France; Hôpital Bicêtre, AP-HP, Laboratoire de Biochimie, Le Kremlin Bicêtre 94270, France
| | - Pauline Gaignard
- Université Paris-Saclay, EA 7357, Lipides: Systèmes Analytiques et Biologiques, Châtenay-Malabry 92296, France; Hôpital Bicêtre, AP-HP, Laboratoire de Biochimie, Le Kremlin Bicêtre 94270, France
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5
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Poznyak AV, Sukhorukov VN, Eremin II, Nadelyaeva II, Orekhov AN. Diagnostics of atherosclerosis: Overview of the existing methods. Front Cardiovasc Med 2023; 10:1134097. [PMID: 37229223 PMCID: PMC10203409 DOI: 10.3389/fcvm.2023.1134097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 04/11/2023] [Indexed: 05/27/2023] Open
Abstract
Atherosclerosis was and remains an extremely common and serious health problem. Since the elderly are most at risk of cardiovascular risk, and the average life expectancy is increasing, the spread of atherosclerosis and its consequences increases as well. One of the features of atherosclerosis is its asymptomaticity. This factor makes it difficult to make a timely diagnosis. This entails the lack of timely treatment and even prevention. To date, in the arsenal of physicians, there is only a limited set of methods to suspect and fully diagnose atherosclerosis. In this review, we have tried to briefly describe the most common and effective methods for diagnosing atherosclerosis.
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Creation of Mitochondrial Disease Models Using Mitochondrial DNA Editing. Biomedicines 2023; 11:biomedicines11020532. [PMID: 36831068 PMCID: PMC9953118 DOI: 10.3390/biomedicines11020532] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
Mitochondrial diseases are a large class of human hereditary diseases, accompanied by the dysfunction of mitochondria and the disruption of cellular energy synthesis, that affect various tissues and organ systems. Mitochondrial DNA mutation-caused disorders are difficult to study because of the insufficient number of clinical cases and the challenges of creating appropriate models. There are many cellular models of mitochondrial diseases, but their application has a number of limitations. The most proper and promising models of mitochondrial diseases are animal models, which, unfortunately, are quite rare and more difficult to develop. The challenges mainly arise from the structural features of mitochondria, which complicate the genetic editing of mitochondrial DNA. This review is devoted to discussing animal models of human mitochondrial diseases and recently developed approaches used to create them. Furthermore, this review discusses mitochondrial diseases and studies of metabolic disorders caused by the mitochondrial DNA mutations underlying these diseases.
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From Diabetes to Atherosclerosis: Potential of Metformin for Management of Cardiovascular Disease. Int J Mol Sci 2022; 23:ijms23179738. [PMID: 36077136 PMCID: PMC9456496 DOI: 10.3390/ijms23179738] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/20/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022] Open
Abstract
Atherosclerosis is a common cause of cardiovascular disease, which, in turn, is often fatal. Today, we know a lot about the pathogenesis of atherosclerosis. However, the main knowledge is that the disease is extremely complicated. The development of atherosclerosis is associated with more than one molecular mechanism, each making a significant contribution. These mechanisms include endothelial dysfunction, inflammation, mitochondrial dysfunction, oxidative stress, and lipid metabolism disorders. This complexity inevitably leads to difficulties in treatment and prevention. One of the possible therapeutic options for atherosclerosis and its consequences may be metformin, which has already proven itself in the treatment of diabetes. Both diabetes and atherosclerosis are complex metabolic diseases, the pathogenesis of which involves many different mechanisms, including those common to both diseases. This makes metformin a suitable candidate for investigating its efficacy in cardiovascular disease. In this review, we highlight aspects such as the mechanisms of action and targets of metformin, in addition to summarizing the available data from clinical trials on the effective reduction of cardiovascular risks.
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8
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Poznyak AV, Sadykhov NK, Kartuesov AG, Borisov EE, Melnichenko AA, Grechko AV, Orekhov AN. Hypertension as a risk factor for atherosclerosis: Cardiovascular risk assessment. Front Cardiovasc Med 2022; 9:959285. [PMID: 36072873 PMCID: PMC9441708 DOI: 10.3389/fcvm.2022.959285] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/18/2022] [Indexed: 11/29/2022] Open
Abstract
Atherosclerosis is a predecessor of numerous cardiovascular diseases (CVD), which often lead to morbidity and mortality. Despite the knowledge of the pathogenesis of atherosclerosis, an essential gap in our understanding is the exact trigger mechanism. A wide range of risk factors have been discovered; however, a majority of them are too general to clarify the launching mechanism of atherogenesis. Some risk factors are permanent (age, gender, genetic heritage) and others can be modified [tobacco smoking, physical inactivity, poor nutrition, high blood pressure, type 2 diabetes (T2D), dyslipidemia, and obesity]. All of them have to be taken into account. In the scope of this review, our attention is focused on hypertension, which is considered the most widespread among all modifiable risk factors for atherosclerosis development. Moreover, high blood pressure is the most investigated risk factor. The purpose of this review is to summarize the data on hypertension as a risk factor for atherosclerosis development and the risk assessment.
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Affiliation(s)
- Anastasia V. Poznyak
- Institute for Atherosclerosis Research, Moscow, Russia
- *Correspondence: Anastasia V. Poznyak,
| | | | - Andrey G. Kartuesov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
| | | | - Alexandra A. Melnichenko
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
| | - Andrey V. Grechko
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow, Russia
| | - Alexander N. Orekhov
- Institute for Atherosclerosis Research, Moscow, Russia
- Petrovsky National Research Centre of Surgery, Moscow, Russia
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
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9
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Dabravolski SA, Sadykhov NK, Kartuesov AG, Borisov EE, Sukhorukov VN, Orekhov AN. The Role of Mitochondrial Abnormalities in Diabetic Cardiomyopathy. Int J Mol Sci 2022; 23:ijms23147863. [PMID: 35887211 PMCID: PMC9321738 DOI: 10.3390/ijms23147863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 02/06/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is defined as the presence in diabetic patients of abnormal cardiac structure and performance (such as left ventricular hypertrophy, fibrosis, and arrhythmia) in the absence of other cardiac risk factors (such as hypertension or coronary artery disease). Although the pathogenesis of DCM remains unclear currently, mitochondrial structural and functional dysfunctions are recognised as a central player in the DCM development. In this review, we focus on the role of mitochondrial dynamics, biogenesis and mitophagy, Ca2+ metabolism and bioenergetics in the DCM development and progression. Based on the crucial role of mitochondria in DCM, application of mitochondria-targeting therapies could be effective strategies to slow down the progression of the disease.
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Affiliation(s)
- Siarhei A. Dabravolski
- Department of Clinical Diagnostics, Vitebsk State Academy of Veterinary Medicine [UO VGAVM], 7/11 Dovatora Str., 210026 Vitebsk, Belarus
- Correspondence:
| | - Nikolay K. Sadykhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 125315 Moscow, Russia; (N.K.S.); (A.G.K.)
| | - Andrey G. Kartuesov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 125315 Moscow, Russia; (N.K.S.); (A.G.K.)
| | - Evgeny E. Borisov
- Petrovsky National Research Centre of Surgery, 2, Abrikosovsky Lane, 119991 Moscow, Russia; (E.E.B.); (V.N.S.)
| | - Vasily N. Sukhorukov
- Petrovsky National Research Centre of Surgery, 2, Abrikosovsky Lane, 119991 Moscow, Russia; (E.E.B.); (V.N.S.)
- Institute for Atherosclerosis Research, Osennyaya 4-1-207, 121609 Moscow, Russia;
| | - Alexander N. Orekhov
- Institute for Atherosclerosis Research, Osennyaya 4-1-207, 121609 Moscow, Russia;
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10
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Blagov AV, Grechko AV, Nikiforov NG, Zhuravlev AD, Sadykhov NK, Orekhov AN. Effects of Metabolic Disorders in Immune Cells and Synoviocytes on the Development of Rheumatoid Arthritis. Metabolites 2022; 12:metabo12070634. [PMID: 35888759 PMCID: PMC9324614 DOI: 10.3390/metabo12070634] [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: 06/02/2022] [Revised: 06/30/2022] [Accepted: 07/07/2022] [Indexed: 02/05/2023] Open
Abstract
Rheumatoid arthritis (RA) is a progressive autoimmune disease that affects the joints. It has been proven that, with the development of RA, there are changes in the metabolism of cells located in the focus of inflammation. In this article, we describe the connection between metabolism and inflammation in the context of rheumatoid arthritis. We consider in detail the changes in metabolic processes and their subsequent immunomodulatory effects. In particular, we consider how changes in mitochondrial functioning lead to the modulation of metabolism in rheumatoid arthritis. We also describe the main features of the metabolism in cells present in the synovial membrane during inflammation, and we discuss possible targets for the therapy of rheumatoid arthritis.
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Affiliation(s)
- Alexander V. Blagov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
- Correspondence: (A.V.B.); (A.N.O.)
| | - Andrey V. Grechko
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, 14–3 Solyanka Street, 109240 Moscow, Russia;
| | - Nikita G. Nikiforov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
| | - Alexander D. Zhuravlev
- Petrovsky National Research Centre of Surgery, AP Avtsyn Institute of Human Morphology, 117418 Moscow, Russia;
| | - Nikolay K. Sadykhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
| | - Alexander N. Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
- Correspondence: (A.V.B.); (A.N.O.)
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11
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Castañeda V, Haro-Vinueza A, Salinas I, Caicedo A, Méndez MÁ. The MitoAging Project: Single nucleotide polymorphisms (SNPs) in mitochondrial genes and their association to longevity. Mitochondrion 2022; 66:13-26. [PMID: 35817296 DOI: 10.1016/j.mito.2022.06.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 11/26/2022]
Abstract
Mitochondrial dysfunction is a major hallmark of aging. Mitochondrial DNA (mtDNA) mutations (inherited or acquired) may cause a malfunction of the respiratory chain (RC), and thus negatively affect cell metabolism and function. In contrast, certain mtDNA single nucleotide polymorphisms (SNPs) may be beneficial to mitochondrial electron transport chain function and the extension of cellular health as well as lifespan. The goal of the MitoAging project is to detect key physiological characteristics and mechanisms that improve mitochondrial function and use them to develop therapies to increase longevity and a healthy lifespan. We chose to perform a systematic literature review (SLR) as a tool to collect key mtDNA SNPs associated with an increase in lifespan. Then validated our results by comparing them to the MitoMap database. Next, we assessed the effect of relevant SNPs on protein stability. A total of 28 SNPs were found in protein coding regions. These SNPs were reported in Japan, China, Turkey, and India. Among the studied SNPs, the C5178A mutation in the ND2 gene of Complex I of the RC was detected in all the reviewed reports except in Uygur Chinese centenarians. Then, we found that G9055A (ATP6 gene) and A10398G (ND3 gene) polymorphisms have been associated with a protective effect against Parkinson's disease (PD). Additionally, C8414T in ATP8 was significantly associated with longevity in three Japanese reports. Interestingly, using MitoMap we found that G9055A (ATP6 gene) was the only SNP promoting longevity not associated with any pathology. The identification of SNPs associated with an increase in lifespan opens the possibility to better understand individual differences regarding a decrease in illness susceptibility and find strategies that contribute to healthy aging.
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Affiliation(s)
- Verónica Castañeda
- PhD Program in Biomedicine, Faculty of Medicine, Universidad de los Andes, Santiago, Chile; Instituto de Investigaciones en Biomedicina iBioMed, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Biología, Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador
| | - Alissen Haro-Vinueza
- Instituto de Investigaciones en Biomedicina iBioMed, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Biología, Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador
| | - Ivonne Salinas
- Instituto de Investigaciones en Biomedicina iBioMed, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Escuela de Medicina, Colegio de Ciencias de la Salud COCSA, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Andrés Caicedo
- Instituto de Investigaciones en Biomedicina iBioMed, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Escuela de Medicina, Colegio de Ciencias de la Salud COCSA, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Sistemas Médicos SIME, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador.
| | - Miguel Ángel Méndez
- Instituto de Investigaciones en Biomedicina iBioMed, Universidad San Francisco de Quito USFQ, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador; Grupo de Química Computacional y Teórica, Departamento de Ingeniería Química, Colegio de Ciencias e Ingenierías, Politécnico, Universidad San Francisco de Quito, Quito, Ecuador.
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12
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Blagov AV, Grechko AV, Nikiforov NG, Borisov EE, Sadykhov NK, Orekhov AN. Role of Impaired Mitochondrial Dynamics Processes in the Pathogenesis of Alzheimer’s Disease. Int J Mol Sci 2022; 23:ijms23136954. [PMID: 35805958 PMCID: PMC9266759 DOI: 10.3390/ijms23136954] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 02/06/2023] Open
Abstract
Mitochondrial dysfunction is now recognized as a contributing factor to neurodegenerative diseases, including Alzheimer’s disease (AD). Mitochondria are signaling organelles with a variety of functions ranging from energy production to the regulation of cellular metabolism, energy homeostasis, and response to stress. The successful functioning of these complex processes is critically dependent on the accuracy of mitochondrial dynamics, which includes the ability of mitochondria to change shape and position in the cell, which is necessary to maintain proper function and quality control, especially in polarized cells such as neurons. There has been much evidence to suggest that the disruption of mitochondrial dynamics may play a critical role in the pathogenesis of AD. This review highlights aspects of altered mitochondrial dynamics in AD that may contribute to the etiology of this debilitating condition. We also discuss therapeutic strategies to improve mitochondrial dynamics and function that may provide an alternative treatment approach.
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Affiliation(s)
- Alexander V. Blagov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
- Correspondence: (A.V.B.); (A.N.O.)
| | - Andrey V. Grechko
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, 14-3 Solyanka Street, 109240 Moscow, Russia;
| | - Nikita G. Nikiforov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
| | - Evgeny E. Borisov
- Petrovsky National Research Centre of Surgery, AP Avtsyn Institute of Human Morphology, 117418 Moscow, Russia;
| | - Nikolay K. Sadykhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
| | - Alexander N. Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.G.N.); (N.K.S.)
- Correspondence: (A.V.B.); (A.N.O.)
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13
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Poznyak AV, Sadykhov NK, Kartuesov AG, Borisov EE, Sukhorukov VN, Orekhov AN. Aging of Vascular System Is a Complex Process: The Cornerstone Mechanisms. Int J Mol Sci 2022; 23:ijms23136926. [PMID: 35805936 PMCID: PMC9266404 DOI: 10.3390/ijms23136926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/15/2022] [Accepted: 06/20/2022] [Indexed: 02/04/2023] Open
Abstract
Aging is one of the most intriguing processes of human ontogenesis. It is associated with the development of a wide variety of diseases affecting all organs and their systems. The victory over aging is the most desired goal of scientists; however, it is hardly achievable in the foreseeable future due to the complexity and ambiguity of the process itself. All body systems age, lose their performance, and structural disorders accumulate. The cardiovascular system is no exception. And it is cardiovascular diseases that occupy a leading position as a cause of death, especially among the elderly. The aging of the cardiovascular system is well described from a mechanical point of view. Moreover, it is known that at the cellular level, a huge number of mechanisms are involved in this process, from mitochondrial dysfunction to inflammation. It is on these mechanisms, as well as the potential for taking control of the aging of the cardiovascular system, that we focused on in this review.
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Affiliation(s)
- Anastasia V. Poznyak
- Institute for Atherosclerosis Research, Osennyaya 4-1-207, 121609 Moscow, Russia;
- Correspondence: (A.V.P.); (A.N.O.)
| | - Nikolay K. Sadykhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.K.S.); (A.G.K.)
| | - Andrey G. Kartuesov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.K.S.); (A.G.K.)
| | - Evgeny E. Borisov
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Petrovsky National Research Centre of Surgery, 2, Abrikosovsky Lane, 119991 Moscow, Russia;
| | - Vasily N. Sukhorukov
- Institute for Atherosclerosis Research, Osennyaya 4-1-207, 121609 Moscow, Russia;
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Petrovsky National Research Centre of Surgery, 2, Abrikosovsky Lane, 119991 Moscow, Russia;
| | - Alexander N. Orekhov
- Institute for Atherosclerosis Research, Osennyaya 4-1-207, 121609 Moscow, Russia;
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 8 Baltiiskaya Street, 125315 Moscow, Russia; (N.K.S.); (A.G.K.)
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Petrovsky National Research Centre of Surgery, 2, Abrikosovsky Lane, 119991 Moscow, Russia;
- Correspondence: (A.V.P.); (A.N.O.)
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14
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Abstract
Advances in population-scale genomic sequencing have greatly expanded the understanding of the inherited basis of cardiovascular disease (CVD). Reanalysis of these genomic datasets identified an unexpected risk factor for CVD, somatically acquired DNA mutations. In this review, we provide an overview of somatic mutations and their contributions to CVD. We focus on the most common and well-described manifestation, clonal hematopoiesis of indeterminate potential. We also review the currently available data regarding how somatic mutations lead to tissue mosaicism in various forms of CVD, including atrial fibrillation and aortic aneurism associated with Marfan Syndrome. Finally, we highlight future research directions given current knowledge gaps and consider how technological advances will enhance the discovery of somatic mutations in CVD and management of patients with somatic mutations.
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Affiliation(s)
- J. Brett Heimlich
- Department of Medicine, Division of Cardiovascular Medicine, Vanderbilt University Medical Center
| | - Alexander G. Bick
- Department of Medicine, Division of Genetic Medicine, Vanderbilt University Medical Center
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15
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Doblado L, Lueck C, Rey C, Samhan-Arias AK, Prieto I, Stacchiotti A, Monsalve M. Mitophagy in Human Diseases. Int J Mol Sci 2021; 22:ijms22083903. [PMID: 33167334 PMCID: PMC8069949 DOI: 10.3390/ijms22083903] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 02/06/2023] Open
Abstract
Mitophagy is a selective autophagic process, essential for cellular homeostasis, that eliminates dysfunctional mitochondria. Activated by inner membrane depolarization, it plays an important role during development and is fundamental in highly differentiated post-mitotic cells that are highly dependent on aerobic metabolism, such as neurons, muscle cells, and hepatocytes. Both defective and excessive mitophagy have been proposed to contribute to age-related neurodegenerative diseases, such as Parkinson’s and Alzheimer’s diseases, metabolic diseases, vascular complications of diabetes, myocardial injury, muscle dystrophy, and liver disease, among others. Pharmacological or dietary interventions that restore mitophagy homeostasis and facilitate the elimination of irreversibly damaged mitochondria, thus, could serve as potential therapies in several chronic diseases. However, despite extraordinary advances in this field, mainly derived from in vitro and preclinical animal models, human applications based on the regulation of mitochondrial quality in patients have not yet been approved. In this review, we summarize the key selective mitochondrial autophagy pathways and their role in prevalent chronic human diseases and highlight the potential use of specific interventions.
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Affiliation(s)
- Laura Doblado
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
| | - Claudia Lueck
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
| | - Claudia Rey
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
| | - Alejandro K. Samhan-Arias
- Department of Biochemistry, Universidad Autónoma de Madrid e Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain;
| | - Ignacio Prieto
- Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Isaac Peral 42, 28015 Madrid, Spain;
| | - Alessandra Stacchiotti
- Department of Biomedical Sciences for Health, Universita’ Degli Studi di Milano, Via Mangiagalli 31, 20133 Milan, Italy
- U.O. Laboratorio di Morfologia Umana Applicata, IRCCS Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy
- Correspondence: (A.S.); (M.M.)
| | - Maria Monsalve
- Instituto de Investigaciones Biomédicas “Alberto Sols” (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain; (L.D.); (C.L.); (C.R.)
- Correspondence: (A.S.); (M.M.)
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16
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Wang Z, Chen H, Qin M, Liu C, Ma Q, Chen X, Zhang Y, Lai W, Zhang X, Zhong S. Associations of Mitochondrial Variants With Lipidomic Traits in a Chinese Cohort With Coronary Artery Disease. Front Genet 2021; 12:630359. [PMID: 33841498 PMCID: PMC8027325 DOI: 10.3389/fgene.2021.630359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/08/2021] [Indexed: 11/13/2022] Open
Abstract
Plasma lipids have been at the center stage of the prediction and prevention strategies for cardiovascular diseases (CVDs), and novel lipidomic traits have been recognized as reliable biomarkers for CVD risk prediction. The mitochondria serve as energy supply sites for cells and can synthesize a variety of lipids autonomously. Therefore, investigating the relationships between mitochondrial single nucleotide polymorphism (SNPs) and plasma lipidomic traits is meaningful. Here, we enrolled a total of 1,409 Han Chinese patients with coronary artery disease from three centers and performed linear regression analyses on the SNPs of mitochondrial DNA (mtDNA) and lipidomic traits in two independent groups. Sex, age, aspartate aminotransferase, estimated glomerular filtration rate, antihypertensive drugs, hypertension, and diabetes were adjusted. We identified three associations, namely, D-loopm.16089T>C with TG(50:4) NL-16:0, D-loopm.16145G>A with TG(54:5) NL-18:0, and D-loopm.16089T>C with PC(16:0_16:1) at the statistically significant threshold of FDR < 0.05. Then, we explored the relationships between mitochondrial genetic variants and traditional lipids, including triglyceride, total cholesterol (TC), low-density lipoprotein cholesterol (LDLC), and high-density lipoprotein cholesterol. Two significant associations were found, namely MT-ND6m.14178T>C with TC and D-loopm.215A>G with LDLC. Furthermore, we performed linear regression analysis to determine on the SNPs of mtDNA and left ventricular ejection fraction (LVEF) and found that the SNP D-loopm.16145G>A was nominally significantly associated with LVEF (P = 0.047). Our findings provide insights into the lipidomic context of mtDNA variations and highlight the importance of studying mitochondrial genetic variants related to lipid species.
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Affiliation(s)
- Zixian Wang
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Hui Chen
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Min Qin
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chen Liu
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qilin Ma
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoping Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - Ying Zhang
- Department of Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Weihua Lai
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiaojuan Zhang
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Shilong Zhong
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
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17
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Gramegna LL, Cortesi I, Mitolo M, Evangelisti S, Lia T, Cirillo L, Tonon C, Lodi R. Major cerebral vessels involvement in patients with MELAS syndrome: Worth a scan? A systematic review. J Neuroradiol 2021; 48:359-366. [PMID: 33596430 DOI: 10.1016/j.neurad.2021.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 11/30/2022]
Abstract
Major cerebral vessels have been proposed as a target of defective mitochondrial metabolism in patients with mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes syndrome (MELAS). Cerebral angiographic techniques are not routinely performed in MELAS patients. A systematic literature review was performed to identify studies describing major vessel caliber alterations in MELAS. Twenty-three studies reporting on 46 MELAS patients were included. Alterations in major caliber vessels were present in 59% (27/46) of patients. Dilation occurred in 37% (17/46) of patients, and in 88% (15/17) of them during a stroke-like episode (SLE). Stenosis was reported in 24% (11/46) of patients: 36% (4/11) related to an SLE and 64% (7/11) to dissections or degenerative changes. During an SLE, identification of intracranial vessels dilation or stenosis could be a selection tool for new treatment protocols. Outside SLE, identification of major cerebral vessels dissections and degenerative changes may help to prevent subsequent complications.
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Affiliation(s)
- Laura Ludovica Gramegna
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Functional and Molecular Neuroimaging Unit, Bologna, Italy; Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy.
| | - Irene Cortesi
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy
| | - Micaela Mitolo
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Functional and Molecular Neuroimaging Unit, Bologna, Italy; Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy
| | - Stefania Evangelisti
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy
| | - Talozzi Lia
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy
| | - Luigi Cirillo
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Functional and Molecular Neuroimaging Unit, Bologna, Italy; Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Caterina Tonon
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Functional and Molecular Neuroimaging Unit, Bologna, Italy; Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy
| | - Raffaele Lodi
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
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18
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Jia Q, Xu L, Shen J, Wei Y, Xu H, Shi J, Jia Z, Zhao X, Liu C, Zhong Q, Tian Y, He K. Detecting Rare Variants and Heteroplasmy of Mitochondrial DNA from High-Throughput Sequencing in Patients with Coronary Artery Disease. Med Sci Monit 2020; 26:e925401. [PMID: 33132382 PMCID: PMC7646198 DOI: 10.12659/msm.925401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Although mutations and dysfunction of mitochondrial DNA (mtDNA) are related to a variety of diseases, few studies have focused on the relationship between mtDNA and coronary artery disease (CAD), especially the relationship between rare variants and CAD. Material/Methods Two-stage high-throughput sequencing was performed to detect mtDNA variants or heteroplasmy and the relationship between them and CAD phenotypes. In the discovery stage, mtDNA was analyzed by high-throughput sequencing of long-range PCR products generated from the peripheral blood of 85 CAD patients and 80 demographically matched controls. In the validation stage, high-throughput sequencing for mtDNA target regions captured by GenCap Kit was performed on 100 CAD samples and 100 controls. Finally, tRNA fine mapping was performed between our study and the reported Chinese CAD study. Results Among the tRNA genes, we confirmed a highly conserved rare variant, A5592G, previously reported in the Chinese CAD study, and 2 novel rare mutations that reached Bonferroni’s correction significance in the combined analysis were found (P=7.39×10−4 for T5628C in tRNAAla and P=1.01×10−5 for T681C in 12S rRNA) in the CAD study. Both of them were predicted to be pathological, with T5628C disrupting an extremely conservative base-pairing at the AC stem of tRNAAla. Furthermore, we confirmed the controversial issue that the number of non-synonymous heteroplasmic sites per sample was significantly higher in CAD patients. Conclusions In conclusion, our study confirmed the contribution of rare variants in CAD and showed that CAD patients had more non-synonymous heterogeneity mutations, which may be helpful in identifying the genetic and molecular basis of CAD.
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Affiliation(s)
- Qian Jia
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Lu Xu
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Juan Shen
- BGI Genomics, Shenzhen, Guangdong, China (mainland)
| | - Yanping Wei
- BGI Genomics, Shenzhen, Guangdong, China (mainland)
| | - Huaiqian Xu
- BGI Genomics, Shenzhen, Guangdong, China (mainland)
| | - Jinlong Shi
- Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Zhilong Jia
- Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Xiaojing Zhao
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Chunlei Liu
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Qin Zhong
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Yaping Tian
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Kunlun He
- Core Laboratory of Translational Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Beijing Key laboratory of Chronic Heart Failure Precision Medicine, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
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19
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McDermott MM, Ferrucci L, Gonzalez-Freire M, Kosmac K, Leeuwenburgh C, Peterson CA, Saini S, Sufit R. Skeletal Muscle Pathology in Peripheral Artery Disease: A Brief Review. Arterioscler Thromb Vasc Biol 2020; 40:2577-2585. [PMID: 32938218 DOI: 10.1161/atvbaha.120.313831] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This brief review summarizes current evidence regarding lower extremity peripheral artery disease (PAD) and lower extremity skeletal muscle pathology. Lower extremity ischemia is associated with reduced calf skeletal muscle area and increased calf muscle fat infiltration and fibrosis on computed tomography or magnetic resonance imaging. Even within the same individual, the leg with more severe ischemia has more adverse calf muscle characteristics than the leg with less severe ischemia. More adverse computed tomography-measured calf muscle characteristics, such as reduced calf muscle density, are associated with higher rates of mobility loss in people with PAD. Calf muscle in people with PAD may also have reduced mitochondrial activity compared with those without PAD, although evidence is inconsistent. Muscle biopsy document increased oxidative stress in PAD. Reduced calf muscle perfusion, impaired mitochondrial activity, and smaller myofibers are associated with greater walking impairment in PAD. Preliminary evidence suggests that calf muscle pathology in PAD may be reversible. In a small uncontrolled trial, revascularization improved both the ankle-brachial index and mitochondrial activity, measured by calf muscle phosphocreatine recovery time. A pilot clinical trial showed that cocoa flavanols increased measures of myofiber health, mitochondrial activity, and capillary density while simultaneously improving 6-minute walk distance in PAD. Calf muscle pathological changes are associated with impaired walking performance in people with PAD, and interventions that both increase calf perfusion and improve calf muscle health are promising therapies to improve walking performance in PAD.
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Affiliation(s)
- Mary M McDermott
- Department of Medicine and Preventive Medicine (M.M.M.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Luigi Ferrucci
- Division of Intramural Research, National Institute on Aging, Baltimore, MD (L.F.)
| | - Marta Gonzalez-Freire
- Health Research Institute of the Balearic Islands (IdISBa), Vascular and Metabolic Pathologies Group, Spain (M.G.-F.)
| | - Kate Kosmac
- Department of Physical Therapy, University of Kentucky Center for Muscle Biology, Lexington (K.K., C.A.P.)
| | | | - Charlotte A Peterson
- Department of Physical Therapy, University of Kentucky Center for Muscle Biology, Lexington (K.K., C.A.P.)
| | - Sunil Saini
- Department of Aging and Geriatric Research, University of Florida, Gainesville (C.L., S.S.)
| | - Robert Sufit
- Department of Neurology (R.S.), Northwestern University Feinberg School of Medicine, Chicago, IL
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20
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Impact of Mitochondrial DNA Mutations on Carotid Intima-Media Thickness in the Novosibirsk Region. Life (Basel) 2020; 10:life10090160. [PMID: 32842589 PMCID: PMC7554768 DOI: 10.3390/life10090160] [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: 07/18/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 01/08/2023] Open
Abstract
The search for markers of predisposition to atherosclerosis development is very important for early identification of individuals with a high risk of cardiovascular disease. The aim of the present study was to investigate the association of mitochondrial DNA mutations with carotid intima-media thickness and to determine the impact of mitochondrial heteroplasmy measurements in the prognosis of atherosclerosis development. This cross-sectional, population-based study was conducted in 468 subjects from the Novosibirsk region. It was shown that the mean (carotid intima-media thickness) cIMT correlated with the following mtDNA mutations: m.15059G>A (r = 0.159, p = 0.001), m.12315G>A (r = 0.119; p = 0.011), m.5178C>A (r = 0.114, p = 0.014), and m.3256C>T (r = 0.130, p = 0.011); a negative correlation with mtDNA mutations m.14846G>A (r = −0.111, p = 0.042) and m.13513G>A (r = −0.133, p = 0.004) was observed. In the linear regression analysis, the addition of the set of mtDNA mutations to the conventional cardiovascular risk factors increased the ability to predict the cIMT variability from 17 to 27%. Multi-step linear regression analysis revealed the most important predictors of mean cIMT variability: age, systolic blood pressure, blood levels of total cholesterol, LDL and triglycerides, as well as the mtDNA mutations m.13513G>A, m.15059G>A, m.12315G>A, and m.3256C>T. Thus, a high predictive value of mtDNA mutations for cIMT variability was demonstrated. The association of mutation m.13513G>A and m.14846G>A with a low value of cIMT, demonstrated in several studies, represents a potential for the development of anti-atherosclerotic gene therapy.
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21
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Orekhov AN, Ivanova EA, Markin AM, Nikiforov NG, Sobenin IA. Genetics of Arterial-Wall-Specific Mechanisms in Atherosclerosis: Focus on Mitochondrial Mutations. Curr Atheroscler Rep 2020; 22:54. [PMID: 32772280 DOI: 10.1007/s11883-020-00873-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE OF REVIEW Mutations in both nuclear and mitochondrial genes are associated with the development of atherosclerotic lesions in arteries and may provide a partial explanation to the focal nature of lesion distribution in the arterial wall. This review is aimed to discuss the genetic aspects of atherogenesis with a special focus on possible pro-atherogenic variants (mutations) of the nuclear and mitochondrial genomes that may be implicated in atherosclerosis development and progression. RECENT FINDINGS Mutations in the nuclear genes generally do not cause a phenotype restricted to a specific vascular wall cell and manifest themselves mostly at the organism level. Such mutations can act as important contributors to changes in lipid metabolism and modulate other risk factors of atherosclerosis. By contrast, mitochondrial DNA (mtDNA) mutations occurring locally in the arterial wall cells or in circulating immune cells may play a site-specific role in atherogenesis. The mosaic distribution of heteroplasmic mtDNA mutations in the arterial wall tissue may explain, at least to some extent, the locality and focality of atherosclerotic lesions distribution. The genetic mechanisms of atherogenesis include alterations of both nuclear and mitochondrial genomes. Altered lipid metabolism and inflammatory response of resident arterial wall and circulating immune cells may be related to mtDNA damage and defective mitophagy, which hinders clearance of dysfunctional mitochondria. Mutations of mtDNA can have mosaic distribution and locally affect functionality of endothelial and subendothelial intimal cells in the arterial wall contributing to atherosclerotic lesion development.
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Affiliation(s)
- Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 8 Baltiiskaya Street, Moscow, Russia, 125315. .,Laboratory of Infection Pathology and Molecular Microecology, Institute of Human Morphology, 3 Tsyurupa Street, Moscow, Russia, 117418.
| | - Ekaterina A Ivanova
- Institute for Atherosclerosis Research, 2-1-207 Osennyaya Street, Moscow, Russia, 121609.
| | - Alexander M Markin
- Laboratory of Infection Pathology and Molecular Microecology, Institute of Human Morphology, 3 Tsyurupa Street, Moscow, Russia, 117418
| | - Nikita G Nikiforov
- Centre of Collective Usage, Institute of Gene Biology, Russian Academy of Sciences, 34/5 Vavilova Street, Moscow, Russia, 119334.,Laboratory of Medical Genetics, Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Street, Moscow, Russia, 121552
| | - Igor A Sobenin
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 8 Baltiiskaya Street, Moscow, Russia, 125315.,Laboratory of Medical Genetics, Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Street, Moscow, Russia, 121552
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22
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Novel Point Mutations in Mitochondrial MT-CO2 Gene May Be Risk Factors for Coronary Artery Disease. Appl Biochem Biotechnol 2020; 191:1326-1339. [PMID: 32096057 DOI: 10.1007/s12010-020-03275-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 02/13/2020] [Indexed: 12/11/2022]
Abstract
A wide range of genetic and environmental interactions are involved in the development of coronary artery disease (CAD). Considerable evidence suggests that mitochondrial DNA mutations are associated with heart failure. In this work, we examined the possible mutations in hotspot mitochondrial genes and their association with Iranian patients with coronary artery disease. In this case-control study, nucleotide variations were investigated in 109 patients with coronary atherosclerosis and 105 control subjects with no family history of cardiovascular disease. The molecular analysis of related mitochondrial genes was performed by polymerase chain reaction sequencing. Our results showed 25 nucleotide variations (10 missense mutations, 9 synonymous polymorphisms, and 6 variants in tRNA genes) that for the first time were presented in coronary artery disease. Our results suggest that novel heteroplasmic m.8231 C>A mutation is involved in CAD (p = 0.007). These nucleotide variations suggest the role of mitochondrial mutations as a predisposing factor which in combination with environmental risk factors may affect the pathogenesis of coronary atherosclerosis. So, further investigation is needed for a better understanding of the pathogenesis and predisposing effects of these variations on the disease.
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23
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Pek NMQ, Phua QH, Ho BX, Pang JKS, Hor JH, An O, Yang HH, Yu Y, Fan Y, Ng SY, Soh BS. Mitochondrial 3243A > G mutation confers pro-atherogenic and pro-inflammatory properties in MELAS iPS derived endothelial cells. Cell Death Dis 2019; 10:802. [PMID: 31641105 PMCID: PMC6805858 DOI: 10.1038/s41419-019-2036-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 09/11/2019] [Accepted: 10/04/2019] [Indexed: 12/12/2022]
Abstract
Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is a mitochondrial disorder that is commonly caused by the m.3243A > G mutation in the MT-TL1 gene encoding for mitochondrial tRNA(Leu(UUR)). While clinical studies reported cerebral infarcts, atherosclerotic lesions, and altered vasculature and stroke-like episodes (SLE) in MELAS patients, it remains unclear how this mutation causes the onset and subsequent progression of the disease. Here, we report that in addition to endothelial dysfunction, diseased endothelial cells (ECs) were found to be pro-atherogenic and pro-inflammation due to high levels of ROS and Ox-LDLs, and high basal expressions of VCAM-1, in particular isoform b, respectively. Consistently, more monocytes were found to adhere to MELAS ECs as compared to the isogenic control, suggesting the presence of an atherosclerosis-like pathology in MELAS. Notably, these disease phenotypes in endothelial cells can be effectively reversed by anti-oxidant treatment suggesting that the lowering of ROS is critical for treating patients with MELAS syndrome.
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Affiliation(s)
- Nicole Min Qian Pek
- Disease Modeling and Therapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore
| | - Qian Hua Phua
- Disease Modeling and Therapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore
| | - Beatrice Xuan Ho
- Disease Modeling and Therapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore.,Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore
| | - Jeremy Kah Sheng Pang
- Disease Modeling and Therapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore.,Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore
| | - Jin-Hui Hor
- Disease Modeling and Therapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore.,Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore.,Neurotherapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore
| | - Omer An
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Singapore
| | - Henry He Yang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Singapore
| | - Yang Yu
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China
| | - Yong Fan
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, China.
| | - Shi-Yan Ng
- Neurotherapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore. .,Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, China. .,National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore. .,Department of Physiology, National University of Singapore, 2 Medical Dr, Singapore, 117593, Singapore.
| | - Boon-Seng Soh
- Disease Modeling and Therapeutics Laboratory, A*STAR Institute of Molecular and Cell Biology, 61 Biopolis Drive Proteos, Singapore, 138673, Singapore. .,Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore. .,Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, China.
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Sobenin IA, Zhelankin AV, Khasanova ZB, Sinyov VV, Medvedeva LV, Sagaidak MO, Makeev VJ, Kolmychkova KI, Smirnova AS, Sukhorukov VN, Postnov AY, Grechko AV, Orekhov AN. Heteroplasmic Variants of Mitochondrial DNA in Atherosclerotic Lesions of Human Aortic Intima. Biomolecules 2019; 9:biom9090455. [PMID: 31500189 PMCID: PMC6770808 DOI: 10.3390/biom9090455] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/02/2019] [Accepted: 09/03/2019] [Indexed: 12/16/2022] Open
Abstract
Mitochondrial dysfunction and oxidative stress are likely involved in atherogenesis. Since the mitochondrial genome variation can alter functional activity of cells, it is necessary to assess the presence in atherosclerotic lesions of mitochondrial DNA (mtDNA) heteroplasmic mutations known to be associated with different pathological processes and ageing. In this study, mtDNA heteroplasmy and copy number (mtCN) were evaluated in the autopsy-derived samples of aortic intima differing by the type of atherosclerotic lesions. To detect mtDNA heteroplasmic variants, next generation sequencing was used, and mtCN measurement was performed by qPCR. It was shown that mtDNA heteroplasmic mutations are characteristic for particular areas of intimal tissue; in 83 intimal samples 55 heteroplasmic variants were found; mean minor allele frequencies level accounted for 0.09, with 12% mean heteroplasmy level. The mtCN variance measured in adjacent areas of intima was high, but atherosclerotic lesions and unaffected intima did not differ significantly in mtCN values. Basing on the ratio of minor and major nucleotide mtDNA variants, we can conclude that there exists the increase in the number of heteroplasmic mtDNA variants, which corresponds to the extent of atherosclerotic morphologic phenotype.
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Affiliation(s)
- Igor A Sobenin
- Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 121552 Moscow, Russia.
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia.
- Research Institute of Threpsology and Healthy Longevity, Plekhanov Russian University of Economics, 115093 Moscow, Russia.
| | - Andrey V Zhelankin
- Federal Research and Clinical Center of Physical-Chemical Medicine, 119435 Moscow, Russia.
| | - Zukhra B Khasanova
- Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 121552 Moscow, Russia.
| | - Vasily V Sinyov
- Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 121552 Moscow, Russia.
- Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia.
| | - Lyudmila V Medvedeva
- Federal Research Center of Transplantology and Artificial Organs, 123182 Moscow, Russia.
| | - Maria O Sagaidak
- Vavilov Institute of General Genetics, 117971 Moscow, Russia.
- Moscow Institute of Physics and Technology, Dolgoprudny, 141701 Moscow Region, Russia.
| | - Vsevolod J Makeev
- Vavilov Institute of General Genetics, 117971 Moscow, Russia.
- Moscow Institute of Physics and Technology, Dolgoprudny, 141701 Moscow Region, Russia.
- Engelhardt Institute of Molecular Biology, 119991 Moscow, Russia.
| | - Kira I Kolmychkova
- Institute for Atherosclerosis Research, Skolkovo Innovation Center, 143026 Moscow, Russia.
| | - Anna S Smirnova
- Institute for Atherosclerosis Research, Skolkovo Innovation Center, 143026 Moscow, Russia.
| | - Vasily N Sukhorukov
- Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 121552 Moscow, Russia.
- Research Institute of Human Morphology, 117418 Moscow, Russia.
| | - Anton Y Postnov
- Institute of Experimental Cardiology, National Medical Research Center of Cardiology, 121552 Moscow, Russia.
- Research Institute of Human Morphology, 117418 Moscow, Russia.
| | - Andrey V Grechko
- Federal Scientific Clinical Center for Resuscitation and Rehabilitation, 141534 Moscow Region, Russia.
| | - Alexander N Orekhov
- Institute for Atherosclerosis Research, Skolkovo Innovation Center, 143026 Moscow, Russia.
- Research Institute of Human Morphology, 117418 Moscow, Russia.
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Volobueva A, Grechko A, Yet SF, Sobenin I, Orekhov A. Changes in Mitochondrial Genome Associated with Predisposition to Atherosclerosis and Related Disease. Biomolecules 2019; 9:E377. [PMID: 31426564 PMCID: PMC6723661 DOI: 10.3390/biom9080377] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/08/2019] [Accepted: 08/13/2019] [Indexed: 12/16/2022] Open
Abstract
Atherosclerosis-related cardiovascular diseases remain the leading cause of morbidity and mortality, and the search for novel diagnostic and therapeutic methods is ongoing. Mitochondrial DNA (mtDNA) mutations associated with atherosclerosis represent one of the less explored aspects of the disease pathogenesis that may bring some interesting opportunities for establishing novel molecular markers and, possibly, new points of therapeutic intervention. Recent studies have identified a number of mtDNA mutations, for which the heteroplasmy level was positively or negatively associated with atherosclerosis, including the disease at its early, subclinical stages. In this review, we summarize the results of these studies, providing a list of human mtDNA mutations potentially involved in atherosclerosis. The molecular mechanisms underlying such involvement remain to be elucidated, although it is likely that some of them may be responsible for the increased oxidative stress, which plays an important role in atherosclerosis.
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Affiliation(s)
- Aleksandrina Volobueva
- Laboratory of Gene Therapy, Biocad Biotechnology Company, Saint-Petersburg, Strelnya 198515, Russia
| | - Andrey Grechko
- Federal Scientific Clinical Center for Resuscitation and Rehabilitation, Moscow 109240, Russia
| | - Shaw-Fang Yet
- Institute of Cellular and System Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County 35053, Taiwan
| | - Igor Sobenin
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russia
| | - Alexander Orekhov
- Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russia.
- Institute of Human Morphology, Moscow 117418, Russia.
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Response to: Comment on "Role of Mitochondrial Genome Mutations in Pathogenesis of Carotid Atherosclerosis". OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7620234. [PMID: 30159117 PMCID: PMC6109469 DOI: 10.1155/2018/7620234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 06/27/2018] [Indexed: 11/28/2022]
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Kirichenko TV, Sobenin IA, Khasanova ZB, Orekhova VA, Melnichenko AA, Demakova NA, Grechko AV, Orekhov AN, Ble Castillo JL, Shkurat TP. Data on association of mitochondrial heteroplasmy and cardiovascular risk factors: Comparison of samples from Russian and Mexican populations. Data Brief 2018; 18:16-21. [PMID: 29896485 PMCID: PMC5995799 DOI: 10.1016/j.dib.2018.02.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 12/21/2017] [Accepted: 02/26/2018] [Indexed: 11/25/2022] Open
Abstract
Despite the fact that the role of mitochondrial genome mutations in a number of human diseases is widely studied, the effect of mitochondrial heteroplasmy in the development of cardiovascular disease has not been adequately investigated. In this study, we compared the heteroplasmy levels of mtDNA from leukocytes for m.3256C>T, m.3336T>C, m.12315G>A, m.5178C>A, m.13513G>A, m.14459G>A, m.14846G>A, m.15059G>A, m.652insG and m.1555A>G mutations in CVD-free subjects and CVD patients in samples derived from Russian and Mexican populations. It was demonstrated that heteroplasmy level of m.5178C>A was associated with CVD in Russian men, and m.14459G>A - in Russian women. Mitochondrial heteroplasmy level of m.13513G>A and m.652insG were associated with CVD in Mexican men, and only m.652insG- in Mexican women. The levels of heteroplasmy for mitochondrial mutations m.3336T>C, m.5178C>A, m.14459G>A, m.14846G>A and m.1555A>G were significantly higher in CVD-free Mexican men, and for m.3256C>T, m.3336T>C, and m.14459G>A - in CVD-free Mexican women.
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Affiliation(s)
| | - Igor A Sobenin
- National Research Medical Center of Cardiology, Moscow, Russia
| | | | | | | | | | - Andrey V Grechko
- Federal Scientific Clinical Center for Resuscitation and Rehabilitation, Moscow, Russia
| | - Alexander N Orekhov
- Institute of General Pathology and Pathophysiology, Moscow, Russia.,Institute for Atherosclerosis Research, Skolkovo Innovation Center, Moscow Region, Russia
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Finsterer J, Zarrouk-Mahjoub S. Mitochondrial multiorgan disorder syndrome score generated from definite mitochondrial disorders. Neuropsychiatr Dis Treat 2017; 13:2569-2579. [PMID: 29062232 PMCID: PMC5638572 DOI: 10.2147/ndt.s149067] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES Mitochondrial disorders (MIDs) frequently present as mitochondrial multiorgan disorder syndrome (MIMODS) at onset or evolve into MIMODS during the course. This study aimed to find which organs and/or tissues are most frequently affected by MIMODS, which are the most frequent abnormalities within an affected organ, whether there are typical MIMODS patterns, and to generate an MIMODS score to assess the diagnostic probability for an MID. METHODS This is a retrospective evaluation of clinical, biochemical, and genetic investigations of adult patients with definite MIDs. A total of 36 definite MID patients, 19 men and 17 women, aged 29-82 years were included in this study. The diagnosis was based on genetic testing (n=21), on biochemical investigations (n=17), or on both (n=2). RESULTS The number of organs most frequently affected was 4 ranging from 1 to 9. MIMODS was diagnosed in 97% of patients. The organs most frequently affected were the muscle (97%), central nervous system (CNS; 72%), endocrine glands (69%), heart (58%), intestines (55%), and peripheral nerves (50%). The most frequent CNS abnormalities were leukoencephalopathy, prolonged visually evoked potentials, and atrophy. The most frequent endocrine abnormalities included thyroid dysfunction, short stature, and diabetes. The most frequent cardiac abnormalities included arrhythmias, systolic dysfunction, and hypertrophic cardiomyopathy. The most frequent MIMODS patterns were encephalomyopathy, encephalo-myo-endocrinopathy, and encepalo-myo-endocrino-cardiopathy. The mean ± 2SD MIMODS score was 35.97±27.6 (range =11-71). An MIMODS score >10 was regarded as indicative of an MID. CONCLUSION Adult MIDs manifest as MIMODS in the vast majority of the cases. The organs most frequently affected in MIMODS are muscles, CNS, endocrine glands, and heart. An MIMODS score >10 suggests an MID.
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Mitrofanov KY, Zhelankin AV, Shiganova GM, Sazonova MA, Bobryshev YV, Postnov AY, Sobenin I А IA, Orekhov AN. Analysis of mitochondrial DNA heteroplasmic mutations A1555G, C3256T, T3336C, С5178А, G12315A, G13513A, G14459A, G14846А and G15059A in CHD patients with the history of myocardial infarction. Exp Mol Pathol 2015; 100:87-91. [PMID: 26654794 DOI: 10.1016/j.yexmp.2015.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 12/02/2015] [Indexed: 11/16/2022]
Abstract
The present study was undertaken in order to advance our earlier studies directed to define genetic risk of atherosclerotic vascular lesion development on a base on the analysis of sets of mutational load relevant to the mitochondrial genome mutations. A comparative evaluation of the two study participants' populations (that included coronary heart disease (CHD) patients who underwent myocardial infarction and apparently healthy donors with no clinical manifestations of coronary heart disease) on heteroplasmy levels of nine mutations of the mitochondrial genome (A1555G, C3256T, T3336C, С5178А, G12315A, G13513A, G14459A, G14846А and G15059A) that were shown previously to be associated with risk factors for atherosclerosis was performed. Close associations with the risk of cardiovascular disease were confirmed for mutation C3256T (gene MT-TL1), G12315A (gene MT-TL2), G13513A (gene MT-ND5) and G15059A (gene MT-CYB) by RT-PCR.
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Affiliation(s)
- Konstantin Y Mitrofanov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation; Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow Region, Russian Federation
| | - Andrey V Zhelankin
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Gulnara M Shiganova
- Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow Region, Russian Federation; Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Margarita A Sazonova
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation; Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Yuri V Bobryshev
- Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow Region, Russian Federation; Faculty of Medicine, School of Medical Sciences, University of New South Wales, Sydney, Australia; School of Medicine, University of Western Sydney, Campbelltown NSW, Australia.
| | - Anton Y Postnov
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Igor A Sobenin I А
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation; Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation; Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow Region, Russian Federation; Department of Biophysics, Biological Faculty, Moscow State University, Moscow, Russian Federation
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30
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Sazonova MA, Sinyov VV, Barinova VA, Ryzhkova AI, Bobryshev YV, Orekhov AN, Sobenin IA. Association of mitochondrial mutations with the age of patients having atherosclerotic lesions. Exp Mol Pathol 2015; 99:717-9. [PMID: 26586456 DOI: 10.1016/j.yexmp.2015.11.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 11/13/2015] [Indexed: 12/21/2022]
Abstract
Mitochondrial genome mutations are associated with different pathologies. Earlier the authors of the study found an association of some mitochondrial genome mutations with atherosclerosis. In the present study, an attempt to analyze a connection of detected mutations with the age of patients with atherosclerosis was made. The investigated sample included 700 individuals, examined by ultrasonography in polyclinics of Moscow and the Moscow region. The sample was divided approximately into two equal parts. The first part included patients with carotid atherosclerosis. The second part included conventionally healthy study participants. In PCR-fragments of individuals' DNA the heteroplasmy level of investigated mutations was quantitatively measured by the method, developed by members of our laboratory on the basis of pyrosequencing technology. According to the obtained results mutations G12315A, G14459A and G15059A were significantly associated with the age of the study participants. The same time one nucleotide replacements A1555G and G14846A correlated negatively with the age at a high level of significance. Thus, in the present study an association of atherogenic mitochondrial genome mutations with age was found. Antiatherogenic mutations were correlated with the age negatively. This prompts a suggestion about common mechanisms of atherogenesis and aging.
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Affiliation(s)
- Margarita A Sazonova
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation; Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation
| | - Vasily V Sinyov
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Valeria A Barinova
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation
| | - Anastasia I Ryzhkova
- Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow, Russian Federation; K.I. Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russian Federation
| | - Yuri V Bobryshev
- Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow, Russian Federation; Faculty of Medicine, School of Medical Sciences, University of New South Wales, Sydney, Australia.
| | - Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation; Institute for Atherosclerosis Research, Skolkovo Innovative Centre, Moscow, Russian Federation; Department of Biophysics, Biological Faculty, Moscow State University, Moscow, Russian Federation
| | - Igor A Sobenin
- Laboratory of Medical Genetics, Russian Cardiology Research and Production Complex, Moscow, Russian Federation; Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russian Federation
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Mosaicism of mitochondrial genetic variation in atherosclerotic lesions of the human aorta. BIOMED RESEARCH INTERNATIONAL 2015; 2015:825468. [PMID: 25834827 PMCID: PMC4365331 DOI: 10.1155/2015/825468] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 09/18/2014] [Accepted: 10/28/2014] [Indexed: 12/28/2022]
Abstract
OBJECTIVE The aim of the present study was an analysis of heteroplasmy level in mitochondrial mutations 652delG, A1555G, C3256T, T3336C, 652insG, C5178A, G12315A, G13513A, G14459A, G14846A, and G15059A in normal and affected by atherosclerosis segments of morphologically mapped aortic walls. METHODS We investigated the 265 normal and atherosclerotic tissue sections of 5 human aortas. Intima of every aorta was divided according to morphological characteristics into segments with different types of atherosclerotic lesions: fibrous plaque, lipofibrous plaque, primary atherosclerotic lesion (fatty streak and fatty infiltration), and normal intima from human aorta. PCR-fragments were analyzed by a new original method developed in our laboratory on the basis of pyrosequence technology. RESULTS According to the obtained data, mutations G12315A and G14459A are significantly associated with total and primary atherosclerotic lesions of intimal segments and lipofibrous plaques (P ≤ 0.01 and P ≤ 0.05, accordingly). Mutation C5178A is significantly associated with fibrous plaques and total atherosclerotic lesions (P ≤ 0.01). A1555G mutation shows an antiatherosclerotic effect in primary lesion in lipofibrous plaques (P ≤ 0.05). Meanwhile, G14846A mutation is antiatherogenic for lipofibrous plaques (P ≤ 0.05). CONCLUSION Therefore, mutations C5178A, G14459A, G12315A, A1555G, and G14846A were found to be associated with atherosclerotic lesions.
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Sobenin IA, Zhelankin AV, Sinyov VV, Bobryshev YV, Orekhov AN. Mitochondrial Aging: Focus on Mitochondrial DNA Damage in Atherosclerosis - A Mini-Review. Gerontology 2014; 61:343-9. [DOI: 10.1159/000368923] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 10/08/2014] [Indexed: 11/19/2022] Open
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Yang D, Wang Q, Shi Y, Fan Y, Zheng HX, Song G, Feng Q, Zheng H, He Y. Mitochondrial DNA haplogroup D4b is a protective factor for ischemic stroke in Chinese Han population. Mol Genet Genomics 2014; 289:1241-6. [PMID: 25092472 DOI: 10.1007/s00438-014-0884-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 06/28/2014] [Indexed: 01/01/2023]
Abstract
Mitochondrial DNA (mtDNA) haplogroups affect the assembly and stability of the mitochondrial respiratory chain, which is potentially related to susceptibility to ischemic stroke (IS). However, the role of mtDNA in IS has not been comprehensively studied. The purpose of this study was to explore whether mtDNA polymorphisms and haplogroups are involved in the etiology of IS in the Chinese Han population. We recruited 200 patients with IS and 200 matched controls and genotyped them for 18 mtDNA single nucleotide polymorphisms defining the major Eastern Asian haplogroups by SNaPshot minisequencing. We also sequenced the hypervariable segment I (HVS-I), position 16051-16400. The prevalence of haplogroup D4b was significantly lower in IS patients than in healthy controls (0 and 8 %, respectively, corrected P = 2 × 10(-5), odds ratio = 0.028, 95 % confidence interval = 0.002-0.468).The positive association between haplogroup D4b and IS may be related to the protective effect of haplogroup D4b against oxidative damage, which decreases the risk of IS. Our study provides the first evidence that haplogroup D4b is a potential genetic protective factor for IS in the Chinese Han population.
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Affiliation(s)
- Dongzhi Yang
- School of life sciences of Zhengzhou University, Zhengzhou, 450052, China
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Tang X, Luo YX, Chen HZ, Liu DP. Mitochondria, endothelial cell function, and vascular diseases. Front Physiol 2014; 5:175. [PMID: 24834056 PMCID: PMC4018556 DOI: 10.3389/fphys.2014.00175] [Citation(s) in RCA: 254] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 04/16/2014] [Indexed: 12/20/2022] Open
Abstract
Mitochondria are perhaps the most sophisticated and dynamic responsive sensing systems in eukaryotic cells. The role of mitochondria goes beyond their capacity to create molecular fuel and includes the generation of reactive oxygen species, the regulation of calcium, and the activation of cell death. In endothelial cells, mitochondria have a profound impact on cellular function under both healthy and diseased conditions. In this review, we summarize the basic functions of mitochondria in endothelial cells and discuss the roles of mitochondria in endothelial dysfunction and vascular diseases, including atherosclerosis, diabetic vascular dysfunction, pulmonary artery hypertension, and hypertension. Finally, the potential therapeutic strategies to improve mitochondrial function in endothelial cells and vascular diseases are also discussed, with a focus on mitochondrial-targeted antioxidants and calorie restriction.
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Affiliation(s)
- Xiaoqiang Tang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China
| | - Yu-Xuan Luo
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China
| | - Hou-Zao Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China
| | - De-Pei Liu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China
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Quantitative assessment of heteroplasmy of mitochondrial genome: perspectives in diagnostics and methodological pitfalls. BIOMED RESEARCH INTERNATIONAL 2014; 2014:292017. [PMID: 24818137 PMCID: PMC4003915 DOI: 10.1155/2014/292017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 03/14/2014] [Indexed: 11/17/2022]
Abstract
The role of alterations of mitochondrial DNA (mtDNA) in the development of human pathologies is not understood well. Most of mitochondrial mutations are characterized by the phenomenon of heteroplasmy which is defined as the presence of a mixture of more than one type of an organellar genome within a cell or tissue. The level of heteroplasmy varies in wide range, and the expression of disease is dependent on the percent of alleles bearing mutations, thus allowing consumption that an upper threshold level may exist beyond which the mitochondrial function collapses. Recent findings have demonstrated that some mtDNA heteroplasmic mutations are associated with widely spread chronic diseases, including atherosclerosis and cancer. Actually, each etiological mtDNA mutation has its own heteroplasmy threshold that needs to be measured. Therefore, quantitative evaluation of a mutant allele of mitochondrial genome is an obvious methodological challenge, since it may be a keystone for diagnostics of individual genetic predisposition to the disease. This review provides a comprehensive comparison of methods applicable to the measurement of heteroplasmy level of mitochondrial mutations associated with the development of pathology, in particular, in atherosclerosis and its clinical manifestations.
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Wang Y, Tabas I. Emerging roles of mitochondria ROS in atherosclerotic lesions: causation or association? J Atheroscler Thromb 2014; 21:381-90. [PMID: 24717761 DOI: 10.5551/jat.23929] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Mitochondrial-derived reactive oxygen species (mtROS) is one of the major sources of cellular ROS, and excessive mtROS is associated with atherosclerosis progression in both human and mouse models. This review aims to summarize the most recent studies showing the existence, the causes and pathological consequences of excessive mtROS in atherosclerosis. Despite numerous association and causation studies demonstrating the importance of mtROS in atherosclerosis progression, the failure of antioxidant therapy in human randomized clinical trials demands more definitive, cell-type specific investigations. Better mechanistic understanding of mtROS in atherosclerosis may lead to more effective therapeutic strategies.
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Sobenin IA, Sazonova MA, Postnov AY, Salonen JT, Bobryshev YV, Orekhov AN. Association of mitochondrial genetic variation with carotid atherosclerosis. PLoS One 2013; 8:e68070. [PMID: 23874496 PMCID: PMC3706616 DOI: 10.1371/journal.pone.0068070] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Accepted: 05/24/2013] [Indexed: 11/26/2022] Open
Abstract
In human pathology, several diseases are associated with somatic mutations in the mitochondrial genome (mtDNA). Even though mitochondrial dysfunction leads to increased oxidative stress, the role of mitochondrial mutations in atherosclerosis has not received much attention so far. In this study we analyzed the association of mitochondrial genetic variation with the severity of carotid atherosclerosis, as assessed by carotid intima-media thickness (cIMT) and the presence of coronary heart disease (CHD) in 190 subjects from Moscow, Russia, a population with high CHD occurrence. cIMT was measured by high-resolution B-mode ultrasonography and mtDNA heteroplasmies by a pyrosequencing-based method. We found that heteroplasmies for several mutations in the mtDNA in leukocytes, including C3256T, T3336C, G12315A, G13513A, G14459A, G14846A, and G15059A mutations, were significantly (p<0.001) associated with both the severity of carotid atherosclerosis and the presence of CHD. These findings indicate that somatic mitochondrial mutations have a role in the development of atherosclerosis.
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Affiliation(s)
- Igor A. Sobenin
- Russian Cardiology Research and Production Complex, Moscow, Russia
- Institute of General Pathology and Pathophysiology, Moscow, Russia
| | | | - Anton Y. Postnov
- Russian Cardiology Research and Production Complex, Moscow, Russia
| | - Jukka T. Salonen
- MAS-Metabolic Analytical Services Oy, Helsinki, Finland
- University of Helsinki, Hjelt Institute, Helsinki, Finland
| | - Yuri V. Bobryshev
- Institute for Atherosclerosis Research, Skolkovo Innovation Center, Moscow, Russia
- Faculty of Medicine, University of New South Wales and St Vincent’s Hospital Sydney, Kensington, New South Wales, Australia
| | - Alexander N. Orekhov
- Institute of General Pathology and Pathophysiology, Moscow, Russia
- Institute for Atherosclerosis Research, Skolkovo Innovation Center, Moscow, Russia
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Sobenin IA, Chistiakov DA, Sazonova MA, Ivanova MM, Bobryshev YV, Orekhov AN, Postnov AY. Association of the level of heteroplasmy of the 15059G>A mutation in the MT-CYB mitochondrial gene with essential hypertension. World J Cardiol 2013; 5:132-40. [PMID: 23710300 PMCID: PMC3663127 DOI: 10.4330/wjc.v5.i5.132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 03/14/2013] [Accepted: 03/28/2013] [Indexed: 02/06/2023] Open
Abstract
AIM To examine whether the heteroplasmy level for 15059G>A mutation in the mitochondrial genome might be associated with essential hypertension. METHODS This cross-sectional study involved 196 unrelated participants randomly selected from general population (90 males and 106 females) who underwent a regular medical check-up at the Institute for Atherosclerosis Research (Moscow, Russia). One hundred and twenty of them (61%) had essential hypertension, and 76 (39%) were apparently healthy normotensive persons. The level of heteroplasmy for 15059G>A mutation occurring in the coding region of cytochrome b gene (MT-CYB) of mtDNA isolated from the blood leukocytes, was quantified using DNA pyrosequencing method. RESULTS The 15059G>A heteroplasmy level ranged between 4% and 83%, with a median level of 31%. Between the upper and lower quartiles of 15059G>A heteroplasmy distribution, significant differences were observed for patients' age, systolic blood pressure, and triglyceride levels. 15059G>A heteroplasmy correlated both with age (r = 0.331, P < 0.001) and the presence of hypertension (r = 0.228, P = 0.002). Regression analysis revealed that the age explains 12% variability of 15059G>A heteroplasmy, and hypertension independently explains more 5% variability. The 15059G>A heteroplasmy exceeding 31% was found to be significantly associated with a higher risk of essential hypertension (odds ratio 2.76; P (Fisher) 0.019]. The study participants with high 15059G>A heteroplasmy level were found to have significantly higher age (P < 0.001) and the prevalence of essential hypertension (P = 0.033), as compared to those with low 15059G>A heteroplasmy level. These observations suggested a positive correlation between the level of 15059G>A heteroplasmy and essential hypertension. CONCLUSION This study provides the evidence of association of mtDNA 15059G>A mutation heteroplasmy with essential hypertension.
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Affiliation(s)
- Igor A Sobenin
- Igor A Sobenin, Margarita A Sazonova, Anton Y Postnov, Russian Cardiology Research and Production Complex, 121552 Moscow, Russia
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Sobenin IA, Sazonova MA, Postnov AY, Bobryshev YV, Orekhov AN. Changes of mitochondria in atherosclerosis: possible determinant in the pathogenesis of the disease. Atherosclerosis 2013; 227:283-8. [PMID: 23395464 DOI: 10.1016/j.atherosclerosis.2013.01.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 11/21/2012] [Accepted: 01/07/2013] [Indexed: 11/27/2022]
Abstract
Electron-microscopic analysis of atherosclerotic lesions demonstrated a high variability in the ultrastructural appearance of mitochondria in human aortic atherosclerotic lesions compared with the appearance of mitochondria in the normal parts of the aortic intima. This prompted us to suggest that the structural variations in the appearance of mitochondria might reflect the existence of somatic mutations in the human mitochondrial genome which could be a determinant of atherosclerosis. To test this hypothesis, we have compared the levels of heteroplasmy for several mitochondrial mutations previously proposed to be associated with different types of atherosclerotic lesions. The homogenates of unaffected aortic intimae and lipofibrous plaques of 12 male aortas were compared to reveal the average level of heteroplasmy for A1555G, C3256T, T3336T, G12315A, G14459A, and G15059A mutations of human mitochondrial genome. It has been shown at least four mutations of mitochondrial genome, namely, A1555G in MT-RNR1 gene, C3256T in MT-TL1 gene, G12315A in MT-TL2 gene, and G15059A in MT-CYB gene have significantly higher prevalence and mean value in lipofibrous plaques as compared to non-atherosclerotic intima, and therefore are associated with atherosclerosis. Somatic mutations in the human mitochondrial genome might play a role in the development of atherosclerosis. The mitochondrial mutations observed in our study should encourage further exploration of the concept that mitochondrial DNA heteroplasmy might be used as a biomarker of atherogenesis.
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Affiliation(s)
- Igor A Sobenin
- Russian Cardiology Research and Production Complex, 121552 Moscow, Russia
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