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Izadi M, Sadri N, Abdi A, Serajian S, Jalalei D, Tahmasebi S. Epigenetic biomarkers in aging and longevity: Current and future application. Life Sci 2024; 351:122842. [PMID: 38879158 DOI: 10.1016/j.lfs.2024.122842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 06/06/2024] [Accepted: 06/12/2024] [Indexed: 06/20/2024]
Abstract
The aging process has been one of the most necessary research fields in the current century, and knowing different theories of aging and the role of different genetic, epigenetic, molecular, and environmental modulating factors in increasing the knowledge of aging mechanisms and developing appropriate diagnostic, therapeutic, and preventive ways would be helpful. One of the most conserved signs of aging is epigenetic changes, including DNA methylation, histone modifications, chromatin remodeling, noncoding RNAs, and extracellular RNAs. Numerous biological processes and hallmarks are vital in aging development, but epigenomic alterations are especially notable because of their importance in gene regulation and cellular identity. The mounting evidence points to a possible interaction between age-related epigenomic alterations and other aging hallmarks, like genome instability. To extend a healthy lifespan and possibly reverse some facets of aging and aging-related diseases, it will be crucial to comprehend global and locus-specific epigenomic modifications and recognize corresponding regulators of health and longevity. In the current study, we will aim to discuss the role of epigenomic mechanisms in aging and the most recent developments in epigenetic diagnostic biomarkers, which have the potential to focus efforts on reversing the destructive signs of aging and extending the lifespan.
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Affiliation(s)
- Mehran Izadi
- Department of Infectious and Tropical Diseases, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran
| | - Nariman Sadri
- Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran; School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirhossein Abdi
- Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran; Royan Institute for Stem Cell Biology and Technology, Tehran, Iran
| | - Sahar Serajian
- Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran; Royan Institute for Stem Cell Biology and Technology, Tehran, Iran
| | - Dorsa Jalalei
- Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran; School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Safa Tahmasebi
- Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran; Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Griñán-Ferré C, Bellver-Sanchis A, Guerrero A, Pallàs M. Advancing personalized medicine in neurodegenerative diseases: The role of epigenetics and pharmacoepigenomics in pharmacotherapy. Pharmacol Res 2024; 205:107247. [PMID: 38834164 DOI: 10.1016/j.phrs.2024.107247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/23/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024]
Abstract
About 80 % of brain disorders have a genetic basis. The pathogenesis of most neurodegenerative diseases is associated with a myriad of genetic defects, epigenetic alterations (DNA methylation, histone/chromatin remodeling, miRNA dysregulation), and environmental factors. The emergence of new sequencing technologies and tools to study the epigenome has led to identifying predictive biomarkers for earlier diagnosis, opening up the possibility of prophylactical interventions. As a result, advances in pharmacogenetics and pharmacoepigenomics now allow for personalized treatments based on the profile of each patient and the specific genetic and epigenetic mechanisms involved. This Review highlights the complexity of neurodegenerative diseases and the variability in patient responses to pharmacotherapy, emphasizing the influence of genetic polymorphisms on the pharmacokinetics and pharmacodynamics of drugs used to treat those conditions. We specifically discuss the potential modulatory effect of several genetic polymorphisms associated with an increased risk of developing different neurodegenerative diseases. We explore genetic and genomic technologies and the potential of analyzing individual-specific drug metabolism to predict and influence drug response and associated clinical outcomes. We also provide insights into the mechanism of action of the drugs under investigation and their potential impact on disease-modifying pathways. Finally, the Review underscores the great potential of this field to enhance the effectiveness and safety of drug treatments through personalized medicine.
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Affiliation(s)
- Christian Griñán-Ferré
- Department of Pharmacology and Therapeutic Chemistry, Institut de Neurociències-Universitat de Barcelona, Avda. Joan XXIII, 27, Barcelona 08028, Spain; Centro de Investigación en Red, Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.
| | - Aina Bellver-Sanchis
- Department of Pharmacology and Therapeutic Chemistry, Institut de Neurociències-Universitat de Barcelona, Avda. Joan XXIII, 27, Barcelona 08028, Spain
| | - Ana Guerrero
- Department of Pharmacology and Therapeutic Chemistry, Institut de Neurociències-Universitat de Barcelona, Avda. Joan XXIII, 27, Barcelona 08028, Spain
| | - Mercè Pallàs
- Department of Pharmacology and Therapeutic Chemistry, Institut de Neurociències-Universitat de Barcelona, Avda. Joan XXIII, 27, Barcelona 08028, Spain; Centro de Investigación en Red, Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
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Humaira Amanullah F, Alam T, El Hajj N, Bejaoui Y. The impact of COVID-19 on "biological aging". Front Immunol 2024; 15:1399676. [PMID: 38919619 PMCID: PMC11197383 DOI: 10.3389/fimmu.2024.1399676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
The global impact of the SARS-CoV-2 pandemic has been unprecedented, posing a significant public health challenge. Chronological age has been identified as a key determinant for severe outcomes associated with SARS-CoV-2 infection. Epigenetic age acceleration has previously been observed in various diseases including human immunodeficiency virus (HIV), Cytomegalovirus (CMV), cardiovascular diseases, and cancer. However, a comprehensive review of this topic is still missing in the field. In this review, we explore and summarize the research work focusing on biological aging markers, i.e., epigenetic age and telomere attrition in COVID-19 patients. From the reviewed articles, we identified a consistent pattern of epigenetic age dysregulation and shortened telomere length, revealing the impact of COVID-19 on epigenetic aging and telomere attrition.
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Affiliation(s)
| | - Tanvir Alam
- College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Nady El Hajj
- College of Health and Life Sciences, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
- College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Yosra Bejaoui
- College of Health and Life Sciences, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
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Filoglu G, Sımsek SZ, Ersoy G, Can K, Bulbul O. Epigenetic-based age prediction in blood samples: Model development. J Forensic Sci 2024; 69:869-879. [PMID: 38308398 DOI: 10.1111/1556-4029.15478] [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: 09/11/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/04/2024]
Abstract
Aging is a complex process influenced by genetic, epigenetic, and environmental factors that lead to tissue deterioration and frailty. Epigenetic mechanisms, such as DNA methylation, play a significant role in gene expression regulation and aging. This study presents a new age estimation model developed for the Turkish population using blood samples. Eight CpG sites in loci TOM1L1, ELOVL2, ASPA, FHL2, C1orf132, CCDC102B, cg07082267, and RASSF5 were selected based on their correlation with age. Methylation patterns of these sites were analyzed in blood samples from 100 volunteers, grouped into age categories (20-35, 36-55, and ≥56). Sensitivity analysis indicated a reliable performance with DNA inputs ≥1 ng. Statistical modeling, utilizing Multiple Linear Regression, underscores the reliability of the primary 6-CpG model, excluding cg07082267 and TOM1L1. This model demonstrates strong correlations with chronological age (r = 0.941) and explains 88% of the age variance with low error rates (MAE = 4.07, RMSE = 5.73 years). Validation procedures, including a training-test split and fivefold cross-validation, consistently confirm the model's accuracy and consistency. The study indicates minimal variation in error scores across age cohorts and no significant gender differences. The developed model showed strong predictive accuracy, with the ability to estimate age within certain prediction intervals. This study contributes to the age prediction by using DNA methylation patterns, which can have disparate applications, including forensic and clinical assessments.
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Affiliation(s)
- Gonul Filoglu
- Department of Science, Institute of Forensic Sciences and Legal Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Sumeyye Zulal Sımsek
- Department of Science, Institute of Forensic Sciences and Legal Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Gokhan Ersoy
- Department of Forensic Medicine, Institute of Forensic Sciences and Legal Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Kadriye Can
- Department of Science, Institute of Forensic Sciences and Legal Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ozlem Bulbul
- Department of Science, Institute of Forensic Sciences and Legal Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Dias HC, Manco L. Predicting age from blood by droplet digital PCR using a set of three DNA methylation markers. Forensic Sci Int 2024; 356:111950. [PMID: 38301433 DOI: 10.1016/j.forsciint.2024.111950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 01/02/2024] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
Evaluation of DNA methylation (DNAm) patterns is a promising tool for age estimation. The duplex droplet digital PCR (ddPCR) method has been recently investigated for DNAm evaluation, revealing to be a potential methodology for DNAm evaluation and molecular age estimation. In this study, we evaluated DNAm levels of CpGs located at the three age-associated genes ELOVL2, FHL2 and PDE4C using ddPCR to develop an age prediction model. Blood-derived DNA samples from 58 healthy individuals (42 women and 16 men; aged 1-93 years old) were submitted to bisulfite conversion followed by ddPCR using dual-labeled probes targeting methylated and unmethylated DNA sequences. Simple linear regression statistics revealed a strong correlation between DNAm levels and chronological age for FHL2 (R = 0.948; P = 1.472 × 10-29) and PDE4C (R = 0.819; P = 3.917 × 10-15), addressing only one CpG for each gene. For the ELOVL2 gene, evaluating five CpG sites in simultaneous, revealed a strong age correlation (R = 0.887; P = 2.099 × 10-20) in a simple linear regression statistics and very strong age correlation (R = 0.926; P = 2.202 × 10-25) when using quadratic regression statistics. The multivariable regression analysis, using methylation information captured on ELOVL2 (squared), FHL2 and PDE4C genes, revealed a very strong age correlation (R = 0.970; P = 5.356 ×10-33), explaining 93.7 % of age variance, displaying a mean absolute deviation (MAD) between chronological and predicted age of 4.657 years (RMSE = 6.044). We postulate that the ddPCR method should be further investigated for DNAm-based age prediction, because it is a relatively simple and an accurate method that can be routinely used in forensic laboratories for testing a few numbers of markers.
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Affiliation(s)
- Helena Correia Dias
- Research Centre for Anthropology and Health (CIAS), University of Coimbra, 3000-456 Coimbra, Portugal
| | - Licínio Manco
- Research Centre for Anthropology and Health (CIAS), University of Coimbra, 3000-456 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal.
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Ramsteijn AS, Ndiaye M, Kalashikam RR, Htet MK, Yadav Dm D, Augustine LF, Zahra NL, Djigal A, Yanti D, Angelin TC, Nurfadilah M, Gorre M, Subrahamanyam D, Vadakattu SS, Munikumar M, Horgan GW, Fahmida U, Faye B, Kulkarni B, Haggarty P. Epigenetic studies in children at risk of stunting and their parents in India, Indonesia and Senegal: a UKRI GCRF Action Against Stunting Hub protocol paper. BMJ Paediatr Open 2024; 8:e001770. [PMID: 38417921 PMCID: PMC10900567 DOI: 10.1136/bmjpo-2022-001770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/21/2023] [Indexed: 03/01/2024] Open
Abstract
INTRODUCTION In 2020, an estimated 150 million children under the age of 5 years were stunted. Stunting results from early-life adversity and it is associated with significant physical and cognitive deficit, lifelong socioeconomic disadvantage and reduced life expectancy. There is a need to understand the causes of stunting and its effects in order to develop strategies to avoid it and to mitigate the consequences once stunting has occurred. Epigenetics is an important mechanism through which early-life factors are thought to influence biological function, with long-term consequences. We describe a series of epigenetic studies designed to understand how early-life adversity results in stunting and to inform the development of practical tools such as predictive markers and therapeutic targets. This work is part of the UKRI GCRF Action Against Stunting Hub. METHODS AND ANALYSIS The project-in India, Indonesia and Senegal-comprises an observational study of mothers, fathers, and offspring (n=500) spanning the first 1000 days of life, and an intervention study in each country. Epigenetic status (DNA methylation) is determined in saliva from babies collected within 1 month of birth and again at 18 months of age, and from mothers and fathers around the time of birth. Epigenome-wide analysis is carried out using the Illumina EPIC array, augmented by high-definition sequencing approaches. Statistical analysis is carried out at the level of candidate genes/regions, higher dimensional epigenetic states and epigenome-wide association. Data analysis focuses on the determinants of stunting, the effectiveness of interventions, population comparisons and the link between epigenetics and other thematic areas, which include anthropometry, microbiome, gut health, parasitology, cognition, nutrition, food hygiene and water sanitation, food systems and the home environment. ETHICS AND DISSEMINATION This study has been approved by the relevant Ethics Committees in Indonesia, India and Senegal, and the UK. Research data will be published and posted in public repositories.
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Affiliation(s)
| | - Magatte Ndiaye
- Service de Parasitologie-Mycologie, Faculté de Médecine, Université Cheikh Anta Diop (UCAD), Dakar, Senegal
| | | | - Min Kyaw Htet
- South East Asian Ministers of Education Organization Regional Centre for Food and Nutrition (SEAMEO RECFON), East Jakarta, Indonesia
| | | | | | - Nur L Zahra
- South East Asian Ministers of Education Organization Regional Centre for Food and Nutrition (SEAMEO RECFON), East Jakarta, Indonesia
| | - Aicha Djigal
- Service de Parasitologie-Mycologie, Faculté de Médecine, Université Cheikh Anta Diop (UCAD), Dakar, Senegal
| | - Dwi Yanti
- South East Asian Ministers of Education Organization Regional Centre for Food and Nutrition (SEAMEO RECFON), East Jakarta, Indonesia
| | - Tiffany C Angelin
- South East Asian Ministers of Education Organization Regional Centre for Food and Nutrition (SEAMEO RECFON), East Jakarta, Indonesia
| | - Mifa Nurfadilah
- South East Asian Ministers of Education Organization Regional Centre for Food and Nutrition (SEAMEO RECFON), East Jakarta, Indonesia
| | - Manjula Gorre
- ICMR-National Institute of Nutrition, Hyderabad, India
| | | | | | | | | | - Umi Fahmida
- South East Asian Ministers of Education Organization Regional Centre for Food and Nutrition (SEAMEO RECFON), East Jakarta, Indonesia
| | - Babacar Faye
- Service de Parasitologie-Mycologie, Faculté de Médecine, Université Cheikh Anta Diop (UCAD), Dakar, Senegal
| | | | - Paul Haggarty
- Rowett Institute, University of Aberdeen, Aberdeen, UK
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Qin S, Sheng Z, Chen C, Cao Y. Genetic relationship between ageing and coronary heart disease: a Mendelian randomization study. Eur Geriatr Med 2024; 15:159-167. [PMID: 37948032 DOI: 10.1007/s41999-023-00888-6] [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: 06/21/2023] [Accepted: 10/18/2023] [Indexed: 11/12/2023]
Abstract
PURPOSE Genetic relationship between ageing and coronary heart disease has not been well investigated. The aim of the study was to explore the association of several ageing biomarkers with the risk of several types of coronary heart disease using the Mendelian randomization approach. METHODS Summary data for telomere length, four epigenetic clocks (such as intrinsic epigenetic age acceleration), four types of coronary heart disease (such as myocardial infarction) were collected from the most updated and available genome-wide association studies. Instrumental variables were extracted from the exposure-related summary data according to correlation, independence and exclusivity assumptions. Three Mendelian randomization methods (such as inverse variance weighted) were used for causal inference. Four sensitivity analyses (such as MR-Egger intercept) were performed to prevent horizontal pleiotropy. RESULTS Inverse variance weighted reported that longer telomere length was related to the lower risk of myocardial infarction, angina pectoris, unstable angina pectoris and coronary atherosclerosis (P = 8.840e-11, P = 9.830e-04, P = 1.539e-05, P = 2.607e-09). Inverse variance weighted also reported that four epigenetic clocks might be not implicated in the risk of these coronary heart diseases. Furthermore, there was not enough evidence to confirm the effect of coronary heart disease on these ageing biomarkers. CONCLUSION Longer telomere length, but not the epigenetic clock changes, genetically decreased the risk of coronary heart disease. Considering that telomere length and epigenetic clocks were two independent ageing biomarkers, the correlation between ageing and coronary heart disease might be redefined at the genetic level.
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Affiliation(s)
- Sirun Qin
- Department of Cardiovascular Medicine, The Third Xiangya Hospital of Central South University, No. 138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Zhe Sheng
- Department of Cardiovascular Medicine, The Third Xiangya Hospital of Central South University, No. 138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Chenyang Chen
- Department of Cardiovascular Medicine, The Third Xiangya Hospital of Central South University, No. 138, Tongzipo Road, Changsha, 410013, Hunan Province, China
| | - Yu Cao
- Department of Cardiovascular Medicine, The Third Xiangya Hospital of Central South University, No. 138, Tongzipo Road, Changsha, 410013, Hunan Province, China.
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Han Z, Sun X, Ma X, Li X, Zhang L, Shi H. Bladder diverticulum accompanied by abdominal pain: a case description. Quant Imaging Med Surg 2024; 14:1215-1218. [PMID: 38223130 PMCID: PMC10784081 DOI: 10.21037/qims-23-465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 11/01/2023] [Indexed: 01/16/2024]
Affiliation(s)
- Zhongyan Han
- Department of Geriatric Gastroenterology & National Clinical Research Center of Geriatric Disease, Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaoli Sun
- Department of Geriatric Gastroenterology & National Clinical Research Center of Geriatric Disease, Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiao Ma
- Department of Geriatric Gastroenterology & National Clinical Research Center of Geriatric Disease, Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaoming Li
- Department of Geriatric Gastroenterology & National Clinical Research Center of Geriatric Disease, Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Lijuan Zhang
- Department of Hematology & National Clinical Research Center of Geriatric Disease, Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Haiyan Shi
- Department of Geriatric Gastroenterology & National Clinical Research Center of Geriatric Disease, Second Medical Center of Chinese PLA General Hospital, Beijing, China
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Reis AHDEO, Figalo LB, Orsini M, Lemos B. The implications of DNA methylation for amyotrophic lateral sclerosis. AN ACAD BRAS CIENC 2023; 95:e20230277. [PMID: 37909610 DOI: 10.1590/0001-3765202320230277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/11/2023] [Indexed: 11/03/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a complex and serious neurodegenerative disorder that develops in consequence of the progressive loss of the upper and lower motor neurons. Cases of ALS are classified as sporadic (sALS), or familial (fALS). Over 90% of cases are sALS, while roughly 10% are related to inherited genetic mutations (fALS). Approximately 70% of the genetic mutations that contribute to fALS have been identified. On the other hand, the majority of the sALS cases have an undetermined genetic contributor and few mutations have been described, despite the advanced genetic analysis methods. Also, several factors contribute to the onset and progression of ALS. Numerous lines of evidence indicate that epigenetic changes are linked to aging, as well as neurodegenerative disorders, such as ALS. In most cases, they act as the heritable regulation of transcription by DNA methylation, histone modification and expression of noncoding RNAs. Mechanisms involving aberrant DNA methylation could be relevant to human ALS pathobiology and therapeutic targeting. Despite advances in research to find factors associated with ALS and more effective treatments, this disease remains complex and has low patient survival. Here, we provide a narrative review of the role of DNA methylation for this complex neurodegenerative disorder.
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Affiliation(s)
- Adriana Helena DE Oliveira Reis
- Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcantara Gomes, Departamento de Genética, Pavilhão Haroldo Lisboa da Cunha, Rua São Francisco Xavier, 524, Sala 501F, 20550-900 Rio de Janeiro, RJ, Brazil
| | - Luna B Figalo
- Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcantara Gomes, Departamento de Genética, Pavilhão Haroldo Lisboa da Cunha, Rua São Francisco Xavier, 524, Sala 501F, 20550-900 Rio de Janeiro, RJ, Brazil
| | - Marco Orsini
- Programa de Pós-Graduação em Vigilância em Saúde, Universidade Iguaçu, Av. Abílio Augusto Távora, 2134, 26260-045 Nova Iguaçu, RJ, Brazil
- Universidade Federal do Rio de Janeiro, Departamento de Psiquiatria, Av. Venceslau Brás, 71, Botafogo, 22290-140 Rio de Janeiro, RJ, Brazil
| | - Bernardo Lemos
- Coit Center for longevity and Neurotheraéutics, Departament of pharmacology and toxicology, R Ken Coit College of Pharmacy, University of Arizona, 1703 E. Mabel St. PO Box 210207 Tucson, Arizona, USA
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Gehle SC, Kleissler D, Heiling H, Deal A, Xu Z, Ayer Miller VL, Taylor JA, Smitherman AB. Accelerated epigenetic aging and myopenia in young adult cancer survivors. Cancer Med 2023. [PMID: 37031460 DOI: 10.1002/cam4.5908] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 04/11/2023] Open
Abstract
BACKGROUND Young adult cancer survivors experience early aging-related morbidities and mortality. Biological aging biomarkers may identify at-risk survivors and increase our understanding of mechanisms underlying this accelerated aging. METHODS Using an observational study design, we cross-sectionally measured DNA methylation-based epigenetic age in young adult cancer survivors at a tertiary, academic state cancer hospital. Participants were a convenience sample of consecutively enrolled survivors of childhood, adolescent, and young adult cancers treated with either an anthracycline or alkylating agent, and who were at least 3 months post-treatment. Similarly aged healthy comparators were consecutively enrolled. Cancer treatment and treatment intensity were compared to DNA methylation-based epigenetic age and pace of aging. RESULTS Sixty survivors (58 completing assessments, mean age 20.5 years, range 18-29) and 27 comparators (mean age 20 years, range 17-29) underwent DNA methylation measurement. Survivors were predominantly female (62%) and white (60%) and averaged nearly 6 years post-treatment (range 0.2-25 years). Both epigenetic age (AgeAccelGrim: 1.5 vs. -2.4, p < 0.0001; AgeAccelPheno 2.3 vs. -3.8, p = 0.0013) and pace of aging (DunedinPACE 0.99 vs. 0.83, p < 0.0001) were greater in survivors versus comparators. In case-case adjusted analysis, compared to survivors with normal muscle mass, myopenic survivors had higher AgeAccelGrim (2.2 years, 95% CI 0.02-4.33, p = 0.02), AgeAccelPheno (6.2 years, 2.36-10.09, p < 0.001), and DunedinPACE (0.11, 0.05-0.17, p < 0.001). CONCLUSIONS Epigenetic age is older and pace of aging is faster in young adult cancer survivors compared to noncancer peers, which is evident in the early post-therapy period. Survivors with physiological impairment demonstrate greater epigenetic age advancement. Measures of epigenetic age may identify young adult survivors at higher risk for poor functional and health outcomes.
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Affiliation(s)
- Stephanie C Gehle
- Department of Pediatrics UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Daniel Kleissler
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Hillary Heiling
- Department of Biostatistics at the Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Allison Deal
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Zongli Xu
- Epidemiology Branch, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Vanessa L Ayer Miller
- College of Pharmacy and Health Sciences, Campbell University, Buies Creek, North Carolina, USA
| | - Jack A Taylor
- Epidemiology Branch, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Andrew B Smitherman
- Department of Pediatrics UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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Liu J, Wu Y, Dong G, Zhu G, Zhou G. Progress of Research on the Physiology and Molecular Regulation of Sorghum Growth under Salt Stress by Gibberellin. Int J Mol Sci 2023; 24:ijms24076777. [PMID: 37047750 PMCID: PMC10094886 DOI: 10.3390/ijms24076777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 03/30/2023] [Accepted: 04/02/2023] [Indexed: 04/14/2023] Open
Abstract
Plant growth often encounters diverse abiotic stresses. As a global resource-based ecological problem, salinity is widely distributed and one of the major abiotic stresses affecting crop yields worldwide. Sorghum, a cereal crop with medium salt tolerance and great value for the development and utilization of salted soils, is an important source of food, brewing, energy, and forage production. However, in soils with high salt concentrations, sorghum experiences low emergence and suppressed metabolism. It has been demonstrated that the effects of salt stress on germination and seedling growth can be effectively mitigated to a certain extent by the exogenous amendment of hormonal gibberellin (GA). At present, most of the studies on sorghum salt tolerance at home and abroad focus on morphological and physiological levels, including the transcriptome analysis of the exogenous hormone on sorghum salt stress tolerance, the salt tolerance metabolism pathway, and the mining of key salt tolerance regulation genes. The high-throughput sequencing technology is increasingly widely used in the study of crop resistance, which is of great significance to the study of plant resistance gene excavation and mechanism. In this study, we aimed to review the effects of the exogenous hormone GA on leaf morphological traits of sorghum seedlings and further analyze the physiological response of sorghum seedling leaves and the regulation of sorghum growth and development. This review not only focuses on the role of GA but also explores the signal transduction pathways of GA and the performance of their responsive genes under salt stress, thus helping to further clarify the mechanism of regulating growth and production under salt stress. This will serve as a reference for the molecular discovery of key genes related to salt stress and the development of new sorghum varieties.
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Affiliation(s)
- Jiao Liu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China
| | - Yanqing Wu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China
| | - Guichun Dong
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China
| | - Guanglong Zhu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China
| | - Guisheng Zhou
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China
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12
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Role of E2F transcription factor in Oral cancer: Recent Insight and Advancements. Semin Cancer Biol 2023; 92:28-41. [PMID: 36924812 DOI: 10.1016/j.semcancer.2023.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 02/27/2023] [Accepted: 03/06/2023] [Indexed: 03/16/2023]
Abstract
The family of mammalian E2F transcription factors (E2Fs) comprise of 8 members (E2F1-E2F8) classified as activators (E2F1-E2F3) and repressors (E2F4-E2F8) primarily regulating the expression of several genes related to cell proliferation, apoptosis and differentiation, mainly in a cell cycle-dependent manner. E2F activity is frequently controlled via the retinoblastoma protein (pRb), cyclins, p53 and the ubiquitin-proteasome pathway. Additionally, genetic or epigenetic changes result in the deregulation of E2F family genes expression altering S phase entry and apoptosis, an important hallmark for the onset and development of cancer. Although studies reveal E2Fs to be involved in several human malignancies, the mechanisms underlying the role of E2Fs in oral cancer lies nascent and needs further investigations. This review focuses on the role of E2Fs in oral cancer and the etiological factors regulating E2Fs activity, which in turn transcriptionally control the expression of their target genes, thus contributing to cell proliferation, metastasis, and drug/therapy resistance. Further, we will discuss therapeutic strategies for E2Fs, which may prevent oral tumor growth, metastasis, and drug resistance.
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13
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A Deep Learning Approach to Predict Chronological Age. Healthcare (Basel) 2023; 11:healthcare11030448. [PMID: 36767023 PMCID: PMC9914671 DOI: 10.3390/healthcare11030448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023] Open
Abstract
Recently, researchers have turned their focus to predicting the age of people since numerous applications depend on facial recognition approaches. In the medical field, Alzheimer's disease mainly depends on patients' ages. Multiple methods have been implemented and developed to predict age. However, these approaches lack accuracy because every image has unique features, such as shape, pose, and scale. In Saudi Arabia, Vision 2030, concerning the quality of life, is one of the twelve initiatives that were launched recently. The health sector has gained increasing attention as the government has introduced age-based policies to improve the health of its elderly residents. These residents are urgently advised to vaccinate against COVID-19 based on their age. In this paper, proposing a practical, consistent, and trustworthy method to predict age is presented. This method uses the color intensity of eyes and a Convolutional Neural Network (CNN) to predict age in real time based on the ensemble of CNN. A segmentation algorithm is engaged since the approach takes its input from a video stream or an image. This algorithm extracts data from one of the essential parts of the face: the eyes. This part is also informative. Several experiments have been conducted on MATLAB to verify and validate results and relative errors. A Kaggle website dataset is utilized for ages 4 to 59. This dataset includes over 270,000 images, and its size is roughly 2 GB. Consequently, the proposed approach produces ±8.69 years of Mean Square Error (MSE) for the predicted ages. Lastly, a comparative evaluation of relevant studies and the presented algorithm in terms of accuracy, MSE, and Mean Absolute Error (MAE) is also provided. This evaluation shows that the approach developed in the current study outperforms all considered performance metrics since its accuracy is 97.29%. This study found that the color intensity of eyes is highly effective in predicting age, given the high accuracy and acceptable MSE and MAE results. This indicates that it is helpful to utilize this methodology in real-life applications.
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14
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Fernández-Pérez I, Jiménez-Balado J, Lazcano U, Giralt-Steinhauer E, Rey Álvarez L, Cuadrado-Godia E, Rodríguez-Campello A, Macias-Gómez A, Suárez-Pérez A, Revert-Barberá A, Estragués-Gázquez I, Soriano-Tarraga C, Roquer J, Ois A, Jiménez-Conde J. Machine Learning Approximations to Predict Epigenetic Age Acceleration in Stroke Patients. Int J Mol Sci 2023; 24:ijms24032759. [PMID: 36769083 PMCID: PMC9917369 DOI: 10.3390/ijms24032759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Age acceleration (Age-A) is a useful tool that is able to predict a broad range of health outcomes. It is necessary to determine DNA methylation levels to estimate it, and it is known that Age-A is influenced by environmental, lifestyle, and vascular risk factors (VRF). The aim of this study is to estimate the contribution of these easily measurable factors to Age-A in patients with cerebrovascular disease (CVD), using different machine learning (ML) approximations, and try to find a more accessible model able to predict Age-A. We studied a CVD cohort of 952 patients with information about VRF, lifestyle habits, and target organ damage. We estimated Age-A using Hannum's epigenetic clock, and trained six different models to predict Age-A: a conventional linear regression model, four ML models (elastic net regression (EN), K-Nearest neighbors, random forest, and support vector machine models), and one deep learning approximation (multilayer perceptron (MLP) model). The best-performing models were EN and MLP; although, the predictive capability was modest (R2 0.358 and 0.378, respectively). In conclusion, our results support the influence of these factors on Age-A; although, they were not enough to explain most of its variability.
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Affiliation(s)
- Isabel Fernández-Pérez
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Joan Jiménez-Balado
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
- Correspondence: (J.J.-B.); (J.J.-C.)
| | - Uxue Lazcano
- Unidad de Investigación AP-OSIs Guipúzcoa, 20014 Donostia, Spain
| | - Eva Giralt-Steinhauer
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Lucía Rey Álvarez
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Elisa Cuadrado-Godia
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
- Medicine Department, DCEXS-Universitat Pompeu Fabra (UPF), 08002 Barcelona, Spain
| | - Ana Rodríguez-Campello
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
- Medicine Department, DCEXS-Universitat Pompeu Fabra (UPF), 08002 Barcelona, Spain
| | - Adrià Macias-Gómez
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Antoni Suárez-Pérez
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Anna Revert-Barberá
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Isabel Estragués-Gázquez
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
| | - Carolina Soriano-Tarraga
- Department of Psychiatry, NeuroGenomics and Informatics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jaume Roquer
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
- Medicine Department, DCEXS-Universitat Pompeu Fabra (UPF), 08002 Barcelona, Spain
| | - Angel Ois
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
- Medicine Department, DCEXS-Universitat Pompeu Fabra (UPF), 08002 Barcelona, Spain
| | - Jordi Jiménez-Conde
- Neurovascular Research Group, Department of Neurology, IMIM-Hospital del Mar (Institut Hospital del Mar d’Investigacions Mèdiques), 08003 Barcelona, Spain
- Medicine Department, DCEXS-Universitat Pompeu Fabra (UPF), 08002 Barcelona, Spain
- Correspondence: (J.J.-B.); (J.J.-C.)
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15
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Aroke EN, Wiggins AM, Hobson JM, Srinivasasainagendra V, Quinn TL, Kottae P, Tiwari HK, Sorge RE, Goodin BR. The pace of biological aging helps explain the association between insomnia and chronic low back pain. Mol Pain 2023; 19:17448069231210648. [PMID: 37845028 PMCID: PMC10631343 DOI: 10.1177/17448069231210648] [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: 08/21/2023] [Revised: 09/12/2023] [Accepted: 10/11/2023] [Indexed: 10/18/2023] Open
Abstract
Chronic low back pain (cLBP) is associated with insomnia and advanced age. Emerging evidence suggests that the severity of both sleep disorders (like insomnia) and chronic pain are associated with a faster pace of biological aging. We aimed to determine whether the pace of biological age mediates the relationship between insomnia and the impact of cLBP in a sample of community-dwelling adults ages 19 to 85 years. Participants (49 with no pain, 32 with low-impact pain, and 37 with high-impact pain) completed sociodemographic, pain, insomnia, and short physical performance battery assessments. We calculated the pace of biological aging using DunedinPACE from blood leukocyte DNA. On average, individuals with high-impact cLBP had significantly faster biological aging than those with low-impact and no chronic pain (p < .001). Bivariate associations of DunedinPACE scores with insomnia severity and functional performance were significant at p < .01 (rs = 0.324 and -0.502, respectively). After adjusting for race and sex, the association of insomnia severity and the impact of cLBP was partially mediated by the pace of biological aging (β = 0.070, p < .001). Also, the association of insomnia severity with functional performance was partially mediated by the pace of biological aging (β = -0.105, p < .001). Thus, insomnia remains strongly predictive of cLBP outcomes, and the pace of biological aging helps explain this association. Future prospective studies with repeated assessments are needed to uncover the directionality of these complex relationships and ultimately develop interventions to manage cLBP.
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Affiliation(s)
- Edwin N Aroke
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Asia M Wiggins
- Department of Psychology, College of Arts and Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Joanna M Hobson
- Department of Psychology, College of Arts and Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Vinodh Srinivasasainagendra
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Tammie L Quinn
- Department of Psychology, College of Arts and Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Pooja Kottae
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hemant K Tiwari
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robert E Sorge
- Department of Psychology, College of Arts and Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Burel R Goodin
- Washington University Pain Center, Department of Anesthesiology, Washington University School of Medicine, St Louis, MO, USA
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16
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Mishra S, Raval M, Kachhawaha AS, Tiwari BS, Tiwari AK. Aging: Epigenetic modifications. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 197:171-209. [PMID: 37019592 DOI: 10.1016/bs.pmbts.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Aging is one of the most complex and irreversible health conditions characterized by continuous decline in physical/mental activities that eventually poses an increased risk of several diseases and ultimately death. These conditions cannot be ignored by anyone but there are evidences that suggest that exercise, healthy diet and good routines may delay the Aging process significantly. Several studies have demonstrated that Epigenetics plays a key role in Aging and Aging-associated diseases through methylation of DNA, histone modification and non-coding RNA (ncRNA). Comprehension and relevant alterations in these epigenetic modifications can lead to new therapeutic avenues of age-delaying contrivances. These processes affect gene transcription, DNA replication and DNA repair, comprehending epigenetics as a key factor in understanding Aging and developing new avenues for delaying Aging, clinical advancements in ameliorating aging-related diseases and rejuvenating health. In the present article, we have described and advocated the epigenetic role in Aging and associated diseases.
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17
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Hong JY, Kim H, Jeon WJ, Lee J, Yeo C, Lee YJ, Ha IH. Epigenetic Changes within the Annulus Fibrosus by DNA Methylation in Rat Intervertebral Disc Degeneration Model. Cells 2022; 11:cells11223547. [PMID: 36428977 PMCID: PMC9688069 DOI: 10.3390/cells11223547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/28/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is an age-dependent progressive spinal disease that causes chronic back or neck pain. Although aging has long been presented as the main risk factor, the exact cause is not fully known. DNA methylation is associated with chronic pain, suggesting that epigenetic modulation may ameliorate disc degeneration. We examined histological changes in the DNA methylation within the discs and their association with pain-related transient receptor potential vanilloid subtype 1 (TrpV1) expression in rats subjected to IDD. Epigenetic markers (5-hydroxymethylcytosine (5hmC), 5-methylcytosine (5Mc)), DNA methyltransferases (DNMTs), and Ten-eleven translocations (Tets) were analyzed using immunohistochemistry, real-time PCR, and DNA dot-blot following IDD. Results revealed high 5mC levels in the annulus fibrosus (AF) region within the disc after IDD and an association with TrpV1 expression. DNMT1 is mainly involved in 5mC conversion in degenerated discs. However, 5hmC levels did not differ between groups. A degenerated disc can lead to locomotor defects as assessed by ladder and tail suspension tests, no pain signals in the von Frey test, upregulated matrix metalloproteinase-3, and downregulated aggrecan levels within the disc. Thus, we found that the DNA methylation status in the AF region of the disc was mainly changed after IDD and associated with aberrant TrpV1 expression in degenerated discs.
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18
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Durso DF, Silveira-Nunes G, Coelho MM, Camatta GC, Ventura LH, Nascimento LS, Caixeta F, Cunha EHM, Castelo-Branco A, Fonseca DM, Maioli TU, Teixeira-Carvalho A, Sala C, Bacalini MJ, Garagnani P, Nardini C, Franceschi C, Faria AMC. Living in endemic area for infectious diseases accelerates epigenetic age. Mech Ageing Dev 2022; 207:111713. [PMID: 35931241 DOI: 10.1016/j.mad.2022.111713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 07/21/2022] [Accepted: 07/27/2022] [Indexed: 11/17/2022]
Abstract
Inflammaging is a low-grade inflammatory state generated by the aging process that can contribute to frailty and age-related diseases in the elderly. However, it can have distinct effects in the elderly living in endemic areas for infectious diseases. An increased inflammatory response may confer protection against infectious agents in these areas, although this advantage can cause accelerating epigenetic aging. In this study, we evaluated the inflammatory profile and the epigenetic age of infected and noninfected individuals from an endemic area in Brazil. The profile of cytokines, chemokines and growth factors analyzed in the sera of the two groups of individuals showed similarities, although infected individuals had a higher concentration of these mediators. A significant increase in IL-1ra, CXCL8, CCL2, CCL3 and CCL4 production was associated with leprosy infection. Notably, elderly individuals displayed distinct immune responses associated with their infection status when compared to adults suggesting an adaptive remodelling of their immune responses. Epigenetic analysis also showed that there was no difference in epigenetic age between the two groups of individuals. However, individuals from the endemic area had a significant accelerated aging when compared to individuals from São Paulo, a non-endemic area in Brazil. Moreover, the latter cohort was also epigenetically aged in relation to an Italian cohort. Our data shows that living in endemic areas for chronic infectious diseases results in remodelling of inflammaging and acceleration of epigenetic aging in individuals regardless of their infectious status. It also highlights that geographical, genetic and environmental factors influence aging and immunosenescence in their pace and profile.
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Affiliation(s)
- D F Durso
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - G Silveira-Nunes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Departamento de Medicina, Universidade Federal de Juiz de Fora, Governador Valadares, Brazil
| | - M M Coelho
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - G C Camatta
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - L H Ventura
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - L S Nascimento
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - F Caixeta
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - E H M Cunha
- Universidade Vale do Rio Doce, Governador Valadares, Brazil
| | - A Castelo-Branco
- Centro de Referência em Doenças Endêmicas e Programas Especiais, Governador Valadares, Brazil
| | - D M Fonseca
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - T U Maioli
- Departamento de Nutrição, Escola de Enfermagem, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - A Teixeira-Carvalho
- Instituto de Pesquisa René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - C Sala
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - M J Bacalini
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - P Garagnani
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - C Nardini
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - C Franceschi
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy; Research Laboratory of System Medicine for Healthy Ageing, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - A M C Faria
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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19
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Characterization of methylation patterns associated with lifestyle factors and vitamin D supplementation in a healthy elderly cohort from Southwest Sweden. Sci Rep 2022; 12:12670. [PMID: 35879377 PMCID: PMC9310683 DOI: 10.1038/s41598-022-15924-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 07/01/2022] [Indexed: 11/08/2022] Open
Abstract
Numerous studies have shown that lifestyle factors, such as regular physical activity and vitamin D intake, may remarkably improve overall health and mental wellbeing. This is especially important in older adults whose vitamin D deficiency occurs with a high prevalence. This study aimed to examine the influence of lifestyle and vitamin D on global DNA methylation patterns in an elderly cohort in Southwest of Sweden. We also sought to examine the methylation levels of specific genes involved in vitamin D's molecular and metabolic activated pathways. We performed a genome wide methylation analysis, using Illumina Infinium DNA Methylation EPIC 850kBeadChip array, on 277 healthy individuals from Southwest Sweden at the age of 70–95. The study participants also answered queries on lifestyle, vitamin intake, heart medication, and estimated health. Vitamin D intake did not in general affect methylation patterns, which is in concert with other studies. However, when comparing the group of individuals taking vitamin supplements, including vitamin D, with those not taking supplements, a difference in methylation in the solute carrier family 25 (SCL25A24) gene was found. This confirms a previous finding, where changes in expression of SLC25A24 were associated with vitamin D treatment in human monocytes. The combination of vitamin D intake and high physical activity increased methylation of genes linked to regulation of vitamin D receptor pathway, the Wnt pathway and general cancer processes. To our knowledge, this is the first study detecting epigenetic markers associated with the combined effects of vitamin D supplementation and high physical activity. These results deserve to be further investigated in an extended, interventional study cohort, where also the levels of 25(OH)D3 can be monitored.
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20
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Ryznar RJ, Phibbs L, Onat E, Van Winkle LJ. Epigenetic Regulation of Development, Cellular Differentiation, and Disease Progression/Protection in Adults. Cells 2022; 11:cells11121907. [PMID: 35741035 PMCID: PMC9221476 DOI: 10.3390/cells11121907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 06/10/2022] [Indexed: 11/25/2022] Open
Affiliation(s)
- Rebecca J. Ryznar
- Department of Biomedical Sciences, Rocky Vista University, Parker, CO 80134, USA
- Correspondence:
| | - Lacie Phibbs
- College of Osteopathic Medicine, Rocky Vista University, Parker, CO 80134, USA; (L.P.); (E.O.)
| | - Erin Onat
- College of Osteopathic Medicine, Rocky Vista University, Parker, CO 80134, USA; (L.P.); (E.O.)
| | - Lon J. Van Winkle
- Department of Medical Humanities, Rocky Vista University, 8401 S. Chambers Road, Parker, CO 80112, USA;
- Department of Biochemistry, Midwestern University, Downers Grove, IL 60515, USA
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21
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Liu JK. Antiaging agents: safe interventions to slow aging and healthy life span extension. NATURAL PRODUCTS AND BIOPROSPECTING 2022; 12:18. [PMID: 35534591 PMCID: PMC9086005 DOI: 10.1007/s13659-022-00339-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 03/29/2022] [Indexed: 05/02/2023]
Abstract
Human longevity has increased dramatically during the past century. More than 20% of the 9 billion population of the world will exceed the age of 60 in 2050. Since the last three decades, some interventions and many preclinical studies have been found to show slowing aging and increasing the healthy lifespan of organisms from yeast, flies, rodents to nonhuman primates. The interventions are classified into two groups: lifestyle modifications and pharmacological/genetic manipulations. Some genetic pathways have been characterized to have a specific role in controlling aging and lifespan. Thus, all genes in the pathways are potential antiaging targets. Currently, many antiaging compounds target the calorie-restriction mimetic, autophagy induction, and putative enhancement of cell regeneration, epigenetic modulation of gene activity such as inhibition of histone deacetylases and DNA methyltransferases, are under development. It appears evident that the exploration of new targets for these antiaging agents based on biogerontological research provides an incredible opportunity for the healthcare and pharmaceutical industries. The present review focus on the properties of slow aging and healthy life span extension of natural products from various biological resources, endogenous substances, drugs, and synthetic compounds, as well as the mechanisms of targets for antiaging evaluation. These bioactive compounds that could benefit healthy aging and the potential role of life span extension are discussed.
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Affiliation(s)
- Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China.
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22
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Manco L, Dias HC. DNA methylation analysis of ELOVL2 gene using droplet digital PCR for age estimation purposes. Forensic Sci Int 2022; 333:111206. [DOI: 10.1016/j.forsciint.2022.111206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/20/2022] [Accepted: 01/28/2022] [Indexed: 11/16/2022]
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23
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Suarez-Bregua P, Rosendo S, Comesaña P, Sánchez-Ruiloba L, Morán P, Planas M, Rotllant J. Dynamic changes in DNA methylation during seahorse (Hippocampus reidi) postnatal development and settlement. Front Zool 2021; 18:52. [PMID: 34627317 PMCID: PMC8502395 DOI: 10.1186/s12983-021-00436-7] [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: 03/30/2021] [Accepted: 09/22/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction Most living marine organisms have a biphasic life cycle dependent on metamorphosis and settlement. These critical life-history events mean that a developmentally competent larva undergoes a range of coordinated morphological and physiological changes that are in synchrony with the ecological transition from a pelagic to a benthonic lifestyle. Therefore, transition from a pelagic to a benthonic habitat requires multiple adaptations, however, the underlying mechanisms regulating this process still remains unclear. Epigenetic regulation and specifically DNA methylation, has been suggested to be particularly important for organisms to adapt to new environments. Seahorses (Family Syngnathidae, Genus Hippocampus) are a fascinating group of fish, distinguished by their unique anatomical features, reproductive strategy and behavior. They are unique among vertebrate species due to their “male pregnancy”, where males nourish developing embryos and larvae in a brood pouch until hatching and parturition occurs. After birth, free-swimming offspring are pelagic and subsequently they change into a demersal lifestyle. Therefore, to begin to address the question whether epigenetic processes could be involved in the transition from a planktonic to a benthonic lifestyle observed in seahorses, we studied global DNA methylation profiles in a tropical seahorse species (Hippocampus reidi) during postnatal development and settlement. Results We performed methylation-sensitive amplified polymorphism (MSAP) along with quantitative expression analysis for genes suggested to be involved in the methylation machinery at six age groups: 1, 5, 10, 20, 30 and 40 days after male’s pouch release (DAR). Results revealed that the H. reidi genome has a significantly different DNA methylation profile during postnatal development and settlement on demersal habitats. Moreover, gene expression analysis showed up- and down-regulation of specific DNA methyltransferases (DNMTs) encoding genes. Conclusion Our data show that the differences in the DNA methylation patterns seen among developmental stages and during the transition from a pelagic to a benthonic lifestyle suggest a potential for epigenetic regulation of gene expression (through DNA methylation) in this species. Therefore, epigenetic mechanisms could be necessary for seahorse settlement. Nevertheless, if these epigenetic mechanisms come from internal or if they are initiated via external environmental cues should be further investigated.
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Affiliation(s)
- Paula Suarez-Bregua
- Acuatic Biotechnology-ACUABIOTEC Lab, Department of Biotechnology and Aquaculture, Marine Research Institute IIM-CSIC, Vigo, Pontevedra, Spain.
| | - Sofia Rosendo
- Acuatic Biotechnology-ACUABIOTEC Lab, Department of Biotechnology and Aquaculture, Marine Research Institute IIM-CSIC, Vigo, Pontevedra, Spain
| | - Pilar Comesaña
- Acuatic Biotechnology-ACUABIOTEC Lab, Department of Biotechnology and Aquaculture, Marine Research Institute IIM-CSIC, Vigo, Pontevedra, Spain
| | - Lucia Sánchez-Ruiloba
- Acuatic Biotechnology-ACUABIOTEC Lab, Department of Biotechnology and Aquaculture, Marine Research Institute IIM-CSIC, Vigo, Pontevedra, Spain
| | - Paloma Morán
- Department of Biochemistry, Genetics and Immunology, University of Vigo, Pontevedra, Spain
| | - Miquel Planas
- Department of Ecology and Marine Resources, Marine Research Institute IIM-CSIC, Vigo, Pontevedra, Spain
| | - Josep Rotllant
- Acuatic Biotechnology-ACUABIOTEC Lab, Department of Biotechnology and Aquaculture, Marine Research Institute IIM-CSIC, Vigo, Pontevedra, Spain.
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Lüth T, Wasner K, Klein C, Schaake S, Tse R, Pereira SL, Laß J, Sinkkonen L, Grünewald A, Trinh J. Nanopore Single-Molecule Sequencing for Mitochondrial DNA Methylation Analysis: Investigating Parkin-Associated Parkinsonism as a Proof of Concept. Front Aging Neurosci 2021; 13:713084. [PMID: 34650424 PMCID: PMC8506010 DOI: 10.3389/fnagi.2021.713084] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/01/2021] [Indexed: 01/08/2023] Open
Abstract
Objective: To establish a workflow for mitochondrial DNA (mtDNA) CpG methylation using Nanopore whole-genome sequencing and perform first pilot experiments on affected Parkin biallelic mutation carriers (Parkin-PD) and healthy controls. Background: Mitochondria, including mtDNA, are established key players in Parkinson's disease (PD) pathogenesis. Mutations in Parkin, essential for degradation of damaged mitochondria, cause early-onset PD. However, mtDNA methylation and its implication in PD is understudied. Herein, we establish a workflow using Nanopore sequencing to directly detect mtDNA CpG methylation and compare mtDNA methylation between Parkin-related PD and healthy individuals. Methods: To obtain mtDNA, whole-genome Nanopore sequencing was performed on blood-derived from five Parkin-PD and three control subjects. In addition, induced pluripotent stem cell (iPSC)-derived midbrain neurons from four of these patients with PD and the three control subjects were investigated. The workflow was validated, using methylated and unmethylated 897 bp synthetic DNA samples at different dilution ratios (0, 50, 100% methylation) and mtDNA without methylation. MtDNA CpG methylation frequency (MF) was detected using Nanopolish and Megalodon. Results: Across all blood-derived samples, we obtained a mean coverage of 250.3X (SD ± 80.5X) and across all neuron-derived samples 830X (SD ± 465X) of the mitochondrial genome. We detected overall low-level CpG methylation from the blood-derived DNA (mean MF ± SD = 0.029 ± 0.041) and neuron-derived DNA (mean MF ± SD = 0.019 ± 0.035). Validation of the workflow, using synthetic DNA samples showed that highly methylated DNA molecules were prone to lower Guppy Phred quality scores and thereby more likely to fail Guppy base-calling. CpG methylation in blood- and neuron-derived DNA was significantly lower in Parkin-PD compared to controls (Mann-Whitney U-test p < 0.05). Conclusion: Nanopore sequencing is a useful method to investigate mtDNA methylation architecture, including Guppy-failed reads is of importance when investigating highly methylated sites. We present a mtDNA methylation workflow and suggest methylation variability across different tissues and between Parkin-PD patients and controls as an initial model to investigate.
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Affiliation(s)
- Theresa Lüth
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
| | - Kobi Wasner
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Christine Klein
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
| | - Susen Schaake
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
| | - Ronnie Tse
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
| | - Sandro L. Pereira
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Joshua Laß
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
| | - Lasse Sinkkonen
- Department of Life Sciences and Medicine, University of Luxembourg, Belvaux, Luxembourg
| | - Anne Grünewald
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Joanne Trinh
- Institute of Neurogenetics BMF, University of Lübeck and University Hospital Schleswig-Holstein Campus Lübeck, Lübeck, Germany
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Opportunities and Challenges in Stem Cell Aging. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1341:143-175. [PMID: 33748933 DOI: 10.1007/5584_2021_624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Studying aging, as a physiological process that can cause various pathological phenotypes, has attracted lots of attention due to its increasing burden and prevalence. Therefore, understanding its mechanism to find novel therapeutic alternatives for age-related disorders such as neurodegenerative and cardiovascular diseases is essential. Stem cell senescence plays an important role in aging. In the context of the underlying pathways, mitochondrial dysfunction, epigenetic and genetic alterations, and other mechanisms have been studied and as a consequence, several rejuvenation strategies targeting these mechanisms like pharmaceutical interventions, genetic modification, and cellular reprogramming have been proposed. On the other hand, since stem cells have great potential for disease modeling, they have been useful for representing aging and its associated disorders. Accordingly, the main mechanisms of senescence in stem cells and promising ways of rejuvenation, along with some examples of stem cell models for aging are introduced and discussed. This review aims to prepare a comprehensive summary of the findings by focusing on the most recent ones to shine a light on this area of research.
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Mazhar M, Din AU, Ali H, Yang G, Ren W, Wang L, Fan X, Yang S. Implication of ferroptosis in aging. Cell Death Discov 2021; 7:149. [PMID: 34226536 PMCID: PMC8257567 DOI: 10.1038/s41420-021-00553-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/05/2021] [Accepted: 05/29/2021] [Indexed: 02/06/2023] Open
Abstract
Life is indeed continuously going through the irreversible and inevitable process of aging. The rate of aging process depends on various factors and varies individually. These factors include various environmental stimuli including exposure to toxic chemicals, psychological stress whereas suffering with various illnesses specially the chronic diseases serve as endogenous triggers. The basic underlying mechanism for all kinds of stresses is now known to be manifested as production of excessive ROS, exhaustion of ROS neutralizing antioxidant enzymes and proteins leading to imbalance in oxidation and antioxidant processes with subsequent oxidative stress induced inflammation affecting the cells, tissues, organs and the whole body. All these factors lead to conventional cell death either through necrosis, apoptosis, or autophagy. Currently, a newly identified mechanism of iron dependent regulated cell death called ferroptosis, is of special interest for its implication in pathogenesis of various diseases such as cardiovascular disease, neurological disorders, cancers, and various other age-related disorders (ARD). In ferroptosis, the cell death occur neither by conventional apoptosis, necrosis nor by autophagy, rather dysregulated iron in the cell mediates excessive lipid peroxidation of accumulated lethal lipids. It is not surprising to assume its role in aging as previous research have identified some solid cues on the subject. In this review, we will highlight the factual evidences to support the possible role and implication of ferroptosis in aging in order to declare the need to identify and explore the interventions to prevent excessive ferroptosis leading to accelerated aging and associated liabilities of aging.
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Affiliation(s)
- Maryam Mazhar
- National Traditional Chinese Medicine Clinical Research Base, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
- Cardiovascular and Cerebrovascular Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Ahmad Ud Din
- Drug Discovery Research Center, Southwest Medical University Luzhou, Luzhou, China
| | - Hamid Ali
- Department of Biosciences, COMSATS University, Islamabad, Pakistan
| | - Guoqiang Yang
- National Traditional Chinese Medicine Clinical Research Base, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
- Department of Acupuncture and Rehabilitation, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Wei Ren
- National Traditional Chinese Medicine Clinical Research Base, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
- Cardiovascular and Cerebrovascular Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Li Wang
- National Traditional Chinese Medicine Clinical Research Base, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
- Cardiovascular and Cerebrovascular Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Xiaohui Fan
- Pharmaceutical Informatics Institute, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Sijin Yang
- National Traditional Chinese Medicine Clinical Research Base, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China.
- Cardiovascular and Cerebrovascular Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China.
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Seddon AR, Liau Y, Pace PE, Miller AL, Das AB, Kennedy MA, Hampton MB, Stevens AJ. Genome-wide impact of hydrogen peroxide on maintenance DNA methylation in replicating cells. Epigenetics Chromatin 2021; 14:17. [PMID: 33761969 PMCID: PMC7992848 DOI: 10.1186/s13072-021-00388-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/01/2021] [Indexed: 12/22/2022] Open
Abstract
Background Environmental factors, such as oxidative stress, have the potential to modify the epigenetic landscape of cells. We have previously shown that DNA methyltransferase (DNMT) activity can be inhibited by sublethal doses of hydrogen peroxide (H2O2). However, site-specific changes in DNA methylation and the reversibility of any changes have not been explored. Using bead chip array technology, differential methylation was assessed in Jurkat T-lymphoma cells following exposure to H2O2. Results Sublethal H2O2 exposure was associated with an initial genome-wide decrease in DNA methylation in replicating cells, which was largely corrected 72 h later. However, some alterations were conserved through subsequent cycles of cell division. Significant changes to the variability of DNA methylation were also observed both globally and at the site-specific level. Conclusions This research indicates that increased exposure to H2O2 can result in long-term alterations to DNA methylation patterns, providing a mechanism for environmental factors to have prolonged impact on gene expression. Supplementary Information The online version contains supplementary material available at 10.1186/s13072-021-00388-6.
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Affiliation(s)
- Annika R Seddon
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand.
| | - Yusmiati Liau
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Paul E Pace
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Allison L Miller
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Andrew B Das
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Martin A Kennedy
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Mark B Hampton
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Aaron J Stevens
- Department of Pathology and Biomedical Science, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand.
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Bartke A, Hascup E, Hascup K, Masternak MM. Growth Hormone and Aging: New Findings. World J Mens Health 2021; 39:454-465. [PMID: 33663025 PMCID: PMC8255405 DOI: 10.5534/wjmh.200201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 12/21/2020] [Accepted: 01/02/2021] [Indexed: 01/04/2023] Open
Abstract
Complex relationships between growth hormone (GH) signaling and mammalian aging continue to attract attention of many investigators. Recent results include evidence that the impact of GH on genome maintenance (DNA damage and repair) is drastically different in normal as compared to cancer cells, consistent with GH promoting aging and cancer progression. Impact of GH on DNA methylation was studied as a possible mechanism linking actions of GH during early life to the trajectory of aging. Animals with reduced or enhanced GH signaling and novel animals with adipocyte-specific deletion of GH receptors were used to elucidate the effects of GH on white and brown adipose tissue, including the impact of this hormone on lipolysis, fibrosis, and thermogenesis. Effects of GH on adipose tissue related to lipid and energy metabolism emerge as mechanistic links between GH, healthspan, and lifespan. Treatment of healthy men with a combination of GH, dehydroepiandrosterone, and metformin was reported to restore thymus function and reduce epigenetic age. Studies of human subjects with deficiency of GH or GH receptors and studies of mice with the same endocrine syndromes identified several phenotypic changes related (positively or negatively) to the previously reported predisposition to healthy aging. Results of these and other recent studies advance present understanding of the mechanisms by which GH influences aging and longevity and of the trade-offs involved.
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Affiliation(s)
- Andrzej Bartke
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL, USA.
| | - Erin Hascup
- Department of Neurology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Kevin Hascup
- Department of Neurology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Michal M Masternak
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
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Sikora E, Bielak-Zmijewska A, Dudkowska M, Krzystyniak A, Mosieniak G, Wesierska M, Wlodarczyk J. Cellular Senescence in Brain Aging. Front Aging Neurosci 2021; 13:646924. [PMID: 33732142 PMCID: PMC7959760 DOI: 10.3389/fnagi.2021.646924] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/02/2021] [Indexed: 12/25/2022] Open
Abstract
Aging of the brain can manifest itself as a memory and cognitive decline, which has been shown to frequently coincide with changes in the structural plasticity of dendritic spines. Decreased number and maturity of spines in aged animals and humans, together with changes in synaptic transmission, may reflect aberrant neuronal plasticity directly associated with impaired brain functions. In extreme, a neurodegenerative disease, which completely devastates the basic functions of the brain, may develop. While cellular senescence in peripheral tissues has recently been linked to aging and a number of aging-related disorders, its involvement in brain aging is just beginning to be explored. However, accumulated evidence suggests that cell senescence may play a role in the aging of the brain, as it has been documented in other organs. Senescent cells stop dividing and shift their activity to strengthen the secretory function, which leads to the acquisition of the so called senescence-associated secretory phenotype (SASP). Senescent cells have also other characteristics, such as altered morphology and proteostasis, decreased propensity to undergo apoptosis, autophagy impairment, accumulation of lipid droplets, increased activity of senescence-associated-β-galactosidase (SA-β-gal), and epigenetic alterations, including DNA methylation, chromatin remodeling, and histone post-translational modifications that, in consequence, result in altered gene expression. Proliferation-competent glial cells can undergo senescence both in vitro and in vivo, and they likely participate in neuroinflammation, which is characteristic for the aging brain. However, apart from proliferation-competent glial cells, the brain consists of post-mitotic neurons. Interestingly, it has emerged recently, that non-proliferating neuronal cells present in the brain or cultivated in vitro can also have some hallmarks, including SASP, typical for senescent cells that ceased to divide. It has been documented that so called senolytics, which by definition, eliminate senescent cells, can improve cognitive ability in mice models. In this review, we ask questions about the role of senescent brain cells in brain plasticity and cognitive functions impairments and how senolytics can improve them. We will discuss whether neuronal plasticity, defined as morphological and functional changes at the level of neurons and dendritic spines, can be the hallmark of neuronal senescence susceptible to the effects of senolytics.
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Affiliation(s)
- Ewa Sikora
- Laboratory of Molecular Bases of Aging, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Anna Bielak-Zmijewska
- Laboratory of Molecular Bases of Aging, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Magdalena Dudkowska
- Laboratory of Molecular Bases of Aging, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Adam Krzystyniak
- Laboratory of Molecular Bases of Aging, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Grazyna Mosieniak
- Laboratory of Molecular Bases of Aging, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Malgorzata Wesierska
- Laboratory of Neuropsychology, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Jakub Wlodarczyk
- Laboratory of Cell Biophysics, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
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