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Liang X, Aouizerat BE, So‐Armah K, Cohen MH, Marconi VC, Xu K, Justice AC. DNA methylation-based telomere length is associated with HIV infection, physical frailty, cancer, and all-cause mortality. Aging Cell 2024; 23:e14174. [PMID: 38629454 PMCID: PMC11258465 DOI: 10.1111/acel.14174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/28/2024] [Accepted: 04/02/2024] [Indexed: 07/21/2024] Open
Abstract
Telomere length (TL) is an important indicator of cellular aging. Shorter TL is associated with several age-related diseases including coronary heart disease, heart failure, diabetes, osteoporosis, and cancer. Recently, a DNA methylation-based TL (DNAmTL) estimator has been developed as an alternative method for directly measuring TL. In this study, we examined the association of DNAmTL with cancer prevalence and mortality risk among people with and without HIV in the Veterans Aging Cohort Study Biomarker Cohort (VACS, N = 1917) and Women's Interagency HIV Study Cohort (WIHS, N = 481). We profiled DNAm in whole blood (VACS) or in peripheral blood mononuclear cells (WIHS) using an array-based method. Cancer prevalence was estimated from electronic medical records and cancer registry data. The VACS Index was used as a measure of physiologic frailty. Models were adjusted for self-reported race and ethnicity, batch, smoking status, alcohol consumption, and five cell types (CD4, CD8, NK, B cell, and monocyte). We found that people with HIV had shorter average DNAmTL than those without HIV infection [beta = -0.25, 95% confidence interval (-0.32, -0.18), p = 1.48E-12]. Greater value of VACS Index [beta = -0.002 (-0.003, -0.001), p = 2.82E-05] and higher cancer prevalence [beta = -0.07 (-0.10, -0.03), p = 1.37E-04 without adjusting age] were associated with shortened DNAmTL. In addition, one kilobase decrease in DNAmTL was associated with a 40% increase in mortality risk [hazard ratio: 0.60 (0.44, 0.82), p = 1.42E-03]. In summary, HIV infection, physiologic frailty, and cancer are associated with shortening DNAmTL, contributing to an increased risk of all-cause mortality.
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Affiliation(s)
- Xiaoyu Liang
- Department of Epidemiology and BiostatisticsMichigan State UniversityEast LansingMichiganUSA
| | - Bradley E. Aouizerat
- Translational Research Center, College of DentistryNew York UniversityNew YorkNew YorkUSA
- Department of Oral and Maxillofacial Surgery, College of DentistryNew York UniversityNew YorkNew YorkUSA
| | - Kaku So‐Armah
- Boston University School of MedicineBostonMassachusettsUSA
| | - Mardge H. Cohen
- Department of MedicineStroger Hospital of Cook CountyChicagoIllinoisUSA
| | - Vincent C. Marconi
- Emory University School of Medicine and Rollins School of Public HealthThe Atlanta Veterans Affairs Medical CenterAtlantaGeorgiaUSA
| | - Ke Xu
- Department of PsychiatryYale School of MedicineNew HavenConnecticutUSA
- VA Connecticut Healthcare SystemWest HavenConnecticutUSA
| | - Amy C. Justice
- VA Connecticut Healthcare SystemWest HavenConnecticutUSA
- Department of Internal MedicineYale School of MedicineNew HavenConnecticutUSA
- Yale School of Public HealthNew HavenConnecticutUSA
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Muthamil S, Kim HY, Jang HJ, Lyu JH, Shin UC, Go Y, Park SH, Lee HG, Park JH. Biomarkers of Cellular Senescence and Aging: Current State-of-the-Art, Challenges and Future Perspectives. Adv Biol (Weinh) 2024:e2400079. [PMID: 38935557 DOI: 10.1002/adbi.202400079] [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: 02/13/2024] [Revised: 05/29/2024] [Indexed: 06/29/2024]
Abstract
Population aging has increased the global prevalence of aging-related diseases, including cancer, sarcopenia, neurological disease, arthritis, and heart disease. Understanding aging, a fundamental biological process, has led to breakthroughs in several fields. Cellular senescence, evinced by flattened cell bodies, vacuole formation, and cytoplasmic granules, ubiquitously plays crucial roles in tissue remodeling, embryogenesis, and wound repair as well as in cancer therapy and aging. The lack of universal biomarkers for detecting and quantifying senescent cells, in vitro and in vivo, constitutes a major limitation. The applications and limitations of major senescence biomarkers, including senescence-associated β-galactosidase staining, telomere shortening, cell-cycle arrest, DNA methylation, and senescence-associated secreted phenotypes are discussed. Furthermore, explore senotherapeutic approaches for aging-associated diseases and cancer. In addition to the conventional biomarkers, this review highlighted the in vitro, in vivo, and disease models used for aging studies. Further, technologies from the current decade including multi-omics and computational methods used in the fields of senescence and aging are also discussed in this review. Understanding aging-associated biological processes by using cellular senescence biomarkers can enable therapeutic innovation and interventions to improve the quality of life of older adults.
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Affiliation(s)
- Subramanian Muthamil
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Jeollanam-do, Naju, 58245, Republic of Korea
| | - Hyun-Yong Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Jeollanam-do, Naju, 58245, Republic of Korea
| | - Hyun-Jun Jang
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Jeollanam-do, Naju, 58245, Republic of Korea
| | - Ji-Hyo Lyu
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Jeollanam-do, Naju, 58245, Republic of Korea
| | - Ung Cheol Shin
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Jeollanam-do, Naju, 58245, Republic of Korea
| | - Younghoon Go
- Korean Medicine (KM)-application Center, Korea Institute of Oriental Medicine, Daegu, 41062, Republic of Korea
| | - Seong-Hoon Park
- Genetic and Epigenetic Toxicology Research Group, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea
| | - Hee Gu Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Jun Hong Park
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Jeollanam-do, Naju, 58245, Republic of Korea
- Korean Convergence Medicine Major, University of Science & Technology (UST), KIOM Campus, Daejeon, 34054, Republic of Korea
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3
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Harutyunyan T, Sargsyan A, Kalashyan L, Igityan H, Grigoryan B, Davtyan H, Aroutiounian R, Liehr T, Hovhannisyan G. Changes in Telomere Length in Leukocytes and Leukemic Cells after Ultrashort Electron Beam Radiation. Int J Mol Sci 2024; 25:6709. [PMID: 38928414 PMCID: PMC11203595 DOI: 10.3390/ijms25126709] [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: 04/12/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Application of laser-generated electron beams in radiotherapy is a recent development. Accordingly, mechanisms of biological response to radiation damage need to be investigated. In this study, telomere length (TL) as endpoint of genetic damage was analyzed in human blood cells (leukocytes) and K562 leukemic cells irradiated with laser-generated ultrashort electron beam. Metaphases and interphases were analyzed in quantitative fluorescence in situ hybridization (Q-FISH) to assess TL. TLs were shortened compared to non-irradiated controls in both settings (metaphase and interphase) after irradiation with 0.5, 1.5, and 3.0 Gy in blood leukocytes. Radiation also caused a significant TL shortening detectable in the interphase of K562 cells. Overall, a negative correlation between TL and radiation doses was observed in normal and leukemic cells in a dose-dependent manner. K562 cells were more sensitive than normal blood cells to increasing doses of ultrashort electron beam radiation. As telomere shortening leads to genome instability and cell death, the results obtained confirm the suitability of this biomarker for assessing genotoxic effects of accelerated electrons for their further use in radiation therapy. Observed differences in TL shortening between normal and K562 cells provide an opportunity for further development of optimal radiation parameters to reduce side effects in normal cells during radiotherapy.
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Affiliation(s)
- Tigran Harutyunyan
- Laboratory of General and Molecular Genetics, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (T.H.); (A.S.); (L.K.); (H.I.); (R.A.); (G.H.)
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia
| | - Anzhela Sargsyan
- Laboratory of General and Molecular Genetics, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (T.H.); (A.S.); (L.K.); (H.I.); (R.A.); (G.H.)
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia
| | - Lily Kalashyan
- Laboratory of General and Molecular Genetics, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (T.H.); (A.S.); (L.K.); (H.I.); (R.A.); (G.H.)
| | - Hovhannes Igityan
- Laboratory of General and Molecular Genetics, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (T.H.); (A.S.); (L.K.); (H.I.); (R.A.); (G.H.)
| | - Bagrat Grigoryan
- CANDLE Synchrotron Research Institute, Acharyan 31, Yerevan 0040, Armenia; (B.G.); (H.D.)
| | - Hakob Davtyan
- CANDLE Synchrotron Research Institute, Acharyan 31, Yerevan 0040, Armenia; (B.G.); (H.D.)
| | - Rouben Aroutiounian
- Laboratory of General and Molecular Genetics, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (T.H.); (A.S.); (L.K.); (H.I.); (R.A.); (G.H.)
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia
| | - Thomas Liehr
- Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, D-07747 Jena, Germany
| | - Galina Hovhannisyan
- Laboratory of General and Molecular Genetics, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (T.H.); (A.S.); (L.K.); (H.I.); (R.A.); (G.H.)
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia
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Stephens Z, Kocher JP. Characterization of telomere variant repeats using long reads enables allele-specific telomere length estimation. BMC Bioinformatics 2024; 25:194. [PMID: 38755561 PMCID: PMC11100205 DOI: 10.1186/s12859-024-05807-5] [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: 11/27/2023] [Accepted: 05/09/2024] [Indexed: 05/18/2024] Open
Abstract
Telomeres are regions of repetitive DNA at the ends of linear chromosomes which protect chromosome ends from degradation. Telomere lengths have been extensively studied in the context of aging and disease, though most studies use average telomere lengths which are of limited utility. We present a method for identifying all 92 telomere alleles from long read sequencing data. Individual telomeres are identified using variant repeats proximal to telomere regions, which are unique across alleles. This high-throughput and high-resolution characterization of telomeres could be foundational to future studies investigating the roles of specific telomeres in aging and disease.
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5
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Tunnicliffe L, Muzambi R, Bartlett JW, Howe L, Abdul Basit K, Warren-Gash C. Infection and telomere length: a systematic review protocol. BMJ Open 2024; 14:e081881. [PMID: 38658004 PMCID: PMC11043687 DOI: 10.1136/bmjopen-2023-081881] [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: 11/17/2023] [Accepted: 03/27/2024] [Indexed: 04/26/2024] Open
Abstract
INTRODUCTION Telomeres are a measure of cellular ageing with potential links to diseases such as cardiovascular diseases and cancer. Studies have shown that some infections may be associated with telomere shortening, but whether an association exists across all types and severities of infections and in which populations is unclear. Therefore we aim to collate available evidence to enable comparison and to inform future research in this field. METHODS AND ANALYSIS We will search for studies involving telomere length and infection in various databases including MEDLINE (Ovid interface), EMBASE (Ovid interface), Web of Science, Scopus, Global Health and the Cochrane Library. For grey literature, the British Library of electronic theses databases (ETHOS) will be explored. We will not limit by study type, geographical location, infection type or method of outcome measurement. Two researchers will independently carry out study selection, data extraction and risk of bias assessment using the ROB2 and ROBINS-E tools. The overall quality of the studies will be determined using the Grading of Recommendations Assessment, Development and Evaluation criteria. We will also evaluate study heterogeneity with respect to study design, exposure and outcome measurement and if there is sufficient homogeneity, a meta-analysis will be conducted. Otherwise, we will provide a narrative synthesis with results grouped by exposure category and study design. ETHICS AND DISSEMINATION The present study does not require ethical approval. Results will be disseminated via publishing in a peer-reviewed journal and conference presentations. PROSPERO REGISTRATION NUMBER CRD42023444854.
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Affiliation(s)
- Louis Tunnicliffe
- Faculty of Epidemiology & Population Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Rutendo Muzambi
- Faculty of Epidemiology & Population Health, London School of Hygiene & Tropical Medicine, London, UK
- Faculty of Epidemiology and Biostatistics, Imperial College London, London, UK
| | - Jonathan W Bartlett
- Faculty of Epidemiology & Population Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Laura Howe
- MRC Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Khalid Abdul Basit
- Faculty of Epidemiology & Population Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Charlotte Warren-Gash
- Faculty of Epidemiology & Population Health, London School of Hygiene & Tropical Medicine, London, UK
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6
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Frydrychová RČ, Konopová B, Peska V, Brejcha M, Sábová M. Telomeres and telomerase: active but complex players in life-history decisions. Biogerontology 2024; 25:205-226. [PMID: 37610666 DOI: 10.1007/s10522-023-10060-z] [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: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/24/2023]
Abstract
Studies on human telomeres have established that telomeres exert a significant influence on lifespan and health of organisms. However, recent research has indicated that the original idea that telomeres affect lifespan in a universal and central manner across all eukaryotic species is an oversimplification. Indeed, findings from a variety of animal species revealed that the role of telomere biology in aging is more subtle and intricate than previously recognized. Here, we show how telomere biology varies depending on the taxon. We also show how telomere biology corresponds to basic life history traits and affects the life table of a species and investments in growth, body size, reproduction, and lifespan; telomeres are hypothesized to shape evolutionary perspectives for species in an active but complex manner. Our evaluation is based on telomere biology data from many examples from throughout the animal kingdom that vary according to the degree of organismal complexity and life history strategies.
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Affiliation(s)
- Radmila Čapková Frydrychová
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, Ceske Budejovice, Czech Republic.
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, Ceske Budejovice, Czech Republic.
| | - Barbora Konopová
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, Ceske Budejovice, Czech Republic
| | - Vratislav Peska
- Department of Cell Biology and Radiobiology, Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 00, Brno, Czech Republic
| | - Miloslav Brejcha
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, Ceske Budejovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, Ceske Budejovice, Czech Republic
| | - Michala Sábová
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, Ceske Budejovice, Czech Republic
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7
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Lopez-Jimenez F, Kapa S, Friedman PA, LeBrasseur NK, Klavetter E, Mangold KE, Attia ZI. Assessing Biological Age: The Potential of ECG Evaluation Using Artificial Intelligence: JACC Family Series. JACC Clin Electrophysiol 2024; 10:775-789. [PMID: 38597855 DOI: 10.1016/j.jacep.2024.02.011] [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: 10/20/2023] [Revised: 02/08/2024] [Accepted: 02/11/2024] [Indexed: 04/11/2024]
Abstract
Biological age may be a more valuable predictor of morbidity and mortality than a person's chronological age. Mathematical models have been used for decades to predict biological age, but recent developments in artificial intelligence (AI) have led to new capabilities in age estimation. Using deep learning methods to train AI models on hundreds of thousands of electrocardiograms (ECGs) to predict age results in a good, but imperfect, age prediction. The error predicting age using ECG, or the difference between AI-ECG-derived age and chronological age (delta age), may be a surrogate measurement of biological age, as the delta age relates to survival, even after adjusting for chronological age and other covariates associated with total and cardiovascular mortality. The relative affordability, noninvasiveness, and ubiquity of ECGs, combined with ease of access and potential to be integrated with smartphone or wearable technology, presents a potential paradigm shift in assessment of biological age.
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Affiliation(s)
- Francisco Lopez-Jimenez
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA.
| | - Suraj Kapa
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Paul A Friedman
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Nathan K LeBrasseur
- Robert and Arlene Kogod Center on Aging, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Eric Klavetter
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Kathryn E Mangold
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Zachi I Attia
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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8
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Chebly A, Khalil C, Kuzyk A, Beylot-Barry M, Chevret E. T-cell lymphocytes' aging clock: telomeres, telomerase and aging. Biogerontology 2024; 25:279-288. [PMID: 37917220 DOI: 10.1007/s10522-023-10075-6] [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: 09/08/2023] [Accepted: 10/13/2023] [Indexed: 11/04/2023]
Abstract
Aging is the decline of physiological capabilities required for life maintenance and reproduction over time. The human immune cells, including T-cells lymphocytes, undergo dramatic aging-related changes, including those related to telomeres and telomerase. It was demonstrated that telomeres and telomerase play crucial roles in T-cell differentiation, aging, and diseases, including a well-documented link between short telomeres and telomerase activation demonstrated in several T-cells malignancies. Herein, we provide a comprehensive review of the literature regarding T-cells' telomeres and telomerase in health and age related-diseases.
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Affiliation(s)
- Alain Chebly
- Jacques Loiselet Center for Medical Genetics and Genomics (CGGM), Faculty of Medicine, Saint Joseph University, Beirut, Lebanon.
- Higher Institute of Public Health, Saint Joseph University, Beirut, Lebanon.
| | - Charbel Khalil
- Reviva Stem Cell Platform for Research and Applications Center, Bsalim, Lebanon
- Bone Marrow Transplant Unit, Burjeel Medical City, Abu Dhabi, United Arab Emirates
- Lebanese American University School of Medicine, Beirut, Lebanon
| | - Alexandra Kuzyk
- Division of Dermatology, Department of Internal Medicine, University of Calgary, Calgary, AB, Canada
| | - Marie Beylot-Barry
- Dermatology Department, Bordeaux University Hospital, Bordeaux, France
- Univ. Bordeaux, INSERM, BRIC, U1312, 33000, Bordeaux, France
| | - Edith Chevret
- Univ. Bordeaux, INSERM, BRIC, U1312, 33000, Bordeaux, France
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Das A, Giri AK, Bhattacharjee P. Targeting 'histone mark': Advanced approaches in epigenetic regulation of telomere dynamics in cancer. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2024; 1867:195007. [PMID: 38237857 DOI: 10.1016/j.bbagrm.2024.195007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
Telomere integrity is required for the maintenance of genome stability and prevention of oncogenic transformation of cells. Recent evidence suggests the presence of epigenetic modifications as an important regulator of mammalian telomeres. Telomeric and subtelomeric regions are rich in epigenetic marks that regulate telomere length majorly through DNA methylation and post-translational histone modifications. Specific histone modifying enzymes play an integral role in establishing telomeric histone codes necessary for the maintenance of structural integrity. Alterations of crucial histone moieties and histone modifiers cause deregulations in the telomeric chromatin leading to carcinogenic manifestations. This review delves into the significance of histone modifications and their influence on telomere dynamics concerning cancer. Additionally, it highlights the existing research gaps that hold the potential to drive the development of therapeutic interventions targeting the telomere epigenome.
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Affiliation(s)
- Ankita Das
- Department of Environmental Science, University of Calcutta, Kolkata 700019, India; Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Ashok K Giri
- Molecular Genetics Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Pritha Bhattacharjee
- Department of Environmental Science, University of Calcutta, Kolkata 700019, India.
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Bosquet Enlow M, De Vivo I, Petty CR, Nelson CA. Temperament and sex as moderating factors of the effects of exposure to maternal depression on telomere length in early childhood. Dev Psychopathol 2024:1-14. [PMID: 38426330 DOI: 10.1017/s0954579424000518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Individual differences in sensitivity to context are posited to emerge early in development and to influence the effects of environmental exposures on a range of developmental outcomes. The goal of the current study was to examine the hypothesis that temperament characteristics and biological sex confer differential vulnerability to the effects of exposure to maternal depression on telomere length in early childhood. Telomere length has emerged as a potentially important biomarker of current and future health, with possible mechanistic involvement in the onset of various disease states. Participants comprised a community sample of children followed from infancy to age 3 years. Relative telomere length was assessed from DNA in saliva samples collected at infancy, 2 years, and 3 years. Maternal depressive symptoms and the child temperament traits of negative affectivity, surgency/extraversion, and regulation/effortful control were assessed via maternal report at each timepoint. Analyses revealed a 3-way interaction among surgency/extraversion, sex, and maternal depressive symptoms, such that higher surgency/extraversion was associated with shorter telomere length specifically among males exposed to elevated maternal depressive symptoms. These findings suggest that temperament and sex influence children's susceptibility to the effects of maternal depression on telomere dynamics in early life.
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Affiliation(s)
- Michelle Bosquet Enlow
- Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital, Boston, MA, USA
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Immaculata De Vivo
- Department of Medicine, Harvard Medical School, Boston, MA, USA
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Epidemiology, Program in Genetic Epidemiology and Statistical Genetics, Harvard School of Public Health, Boston, MA, USA
| | - Carter R Petty
- Institutional Centers for Clinical and Translational Research, Boston Children's Hospital, Boston, MA, USA
| | - Charles A Nelson
- Division of Developmental Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
- Harvard Graduate School of Education, Boston, MA, USA
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11
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Mostafa H, Gutierrez-Tordera L, Mateu-Fabregat J, Papandreou C, Bulló M. Dietary fat, telomere length and cognitive function: unravelling the complex relations. Curr Opin Lipidol 2024; 35:33-40. [PMID: 38018863 DOI: 10.1097/mol.0000000000000900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
PURPOSE OF REVIEW The review aims to explore the recent evidence on the associations between different dietary fat intake and cognitive function, and to understand the role of telomere length in this relationship. RECENT FINDINGS Clinical and preclinical studies included in this review suggest that dietary fat intake is associated with cognitive function and telomere length. High intake of saturated fats and trans fats, commonly found in ultra-processed foods, appears to have negative effects on cognitive function and telomere length, while other dietary fats, such as omega-3 polyunsaturated fatty acids and monounsaturated fatty acids are associated with improved cognitive performance and reduced telomere attrition. Controversial results related to omega-6 polyunsaturated fatty acids intake and its impact on cognitive function were found. Dietary fats may affect telomere length and cognition through oxidative stress, inflammation, and insulin resistance. SUMMARY The current review illustrated the relationship between dietary fat and cognitive function by focusing on the role of telomere length as a potential intermediator. More future studies are required, however, in order to develop targeted interventions aimed at preserving cognitive well-being throughout life.
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Affiliation(s)
- Hamza Mostafa
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Laia Gutierrez-Tordera
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Javier Mateu-Fabregat
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Christopher Papandreou
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Mònica Bulló
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
- CIBER Physiology of Obesity and Nutrition (CIBEROBN), Carlos III Health Institute, Madrid, Spain
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He L, Li M, Wang X, Wu X, Yue G, Wang T, Zhou Y, Lei B, Zhou G. Morphology-based deep learning enables accurate detection of senescence in mesenchymal stem cell cultures. BMC Biol 2024; 22:1. [PMID: 38167069 PMCID: PMC10762950 DOI: 10.1186/s12915-023-01780-2] [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: 03/14/2023] [Accepted: 11/24/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Cell senescence is a sign of aging and plays a significant role in the pathogenesis of age-related disorders. For cell therapy, senescence may compromise the quality and efficacy of cells, posing potential safety risks. Mesenchymal stem cells (MSCs) are currently undergoing extensive research for cell therapy, thus necessitating the development of effective methods to evaluate senescence. Senescent MSCs exhibit distinctive morphology that can be used for detection. However, morphological assessment during MSC production is often subjective and uncertain. New tools are required for the reliable evaluation of senescent single cells on a large scale in live imaging of MSCs. RESULTS We have developed a successful morphology-based Cascade region-based convolution neural network (Cascade R-CNN) system for detecting senescent MSCs, which can automatically locate single cells of different sizes and shapes in multicellular images and assess their senescence state. Additionally, we tested the applicability of the Cascade R-CNN system for MSC senescence and examined the correlation between morphological changes with other senescence indicators. CONCLUSIONS This deep learning has been applied for the first time to detect senescent MSCs, showing promising performance in both chronic and acute MSC senescence. The system can be a labor-saving and cost-effective option for screening MSC culture conditions and anti-aging drugs, as well as providing a powerful tool for non-invasive and real-time morphological image analysis integrated into cell production.
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Affiliation(s)
- Liangge He
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, 1066 Xueyuan Avenue, Shenzhen, 518060, China
- Department of Medical Cell Biology and Genetics, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Mingzhu Li
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, 1066 Xueyuan Avenue, Shenzhen, 518060, China
| | - Xinglie Wang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, 1066 Xueyuan Avenue, Shenzhen, 518060, China
| | - Xiaoyan Wu
- Department of Dermatology, Shenzhen Institute of Translational Medicine, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Guanghui Yue
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, 1066 Xueyuan Avenue, Shenzhen, 518060, China
| | - Tianfu Wang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, 1066 Xueyuan Avenue, Shenzhen, 518060, China
| | - Yan Zhou
- Department of Medical Cell Biology and Genetics, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Shenzhen University Medical School, Shenzhen, 518060, China
- Lungene Biotech Ltd., Shenzhen, 18000, China
| | - Baiying Lei
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, 1066 Xueyuan Avenue, Shenzhen, 518060, China.
| | - Guangqian Zhou
- Department of Medical Cell Biology and Genetics, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Shenzhen University Medical School, Shenzhen, 518060, China.
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13
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Rasouli M, Naeimzadeh Y, Hashemi N, Hosseinzadeh S. Age-Related Alterations in Mesenchymal Stem Cell Function: Understanding Mechanisms and Seeking Opportunities to Bypass the Cellular Aging. Curr Stem Cell Res Ther 2024; 19:15-32. [PMID: 36642876 DOI: 10.2174/1574888x18666230113144016] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/28/2022] [Accepted: 11/23/2022] [Indexed: 01/17/2023]
Abstract
Undoubtedly, mesenchymal stem cells (MSCs) are the most common cell therapy candidates in clinical research and therapy. They not only exert considerable therapeutic effects to alleviate inflammation and promote regeneration, but also show low-immunogenicity properties, which ensure their safety following allogeneic transplantation. Thanks to the necessity of providing a sufficient number of MSCs to achieve clinically efficient outcomes, prolonged in vitro cultivation is indisputable. However, either following long-term in vitro expansion or aging in elderly individuals, MSCs face cellular senescence. Senescent MSCs undergo an impairment in their function and therapeutic capacities and secrete degenerative factors which negatively affect young MSCs. To this end, designing novel investigations to further elucidate cellular senescence and to pave the way toward finding new strategies to reverse senescence is highly demanded. In this review, we will concisely discuss current progress on the detailed mechanisms of MSC senescence and various inflicted changes following aging in MSC. We will also shed light on the examined strategies underlying monitoring and reversing senescence in MSCs to bypass the comprised therapeutic efficacy of the senescent MSCs.
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Affiliation(s)
- Mehdi Rasouli
- Department of Tissue Engineering and Applied Cell Science, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yasaman Naeimzadeh
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nader Hashemi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Simzar Hosseinzadeh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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14
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Tournoy TK, Moons P, Daelman B, De Backer J. Biological Age in Congenital Heart Disease-Exploring the Ticking Clock. J Cardiovasc Dev Dis 2023; 10:492. [PMID: 38132660 PMCID: PMC10743752 DOI: 10.3390/jcdd10120492] [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: 11/14/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
Over the past 50 years, there has been a major shift in age distribution of patients with congenital heart disease (CHD) thanks to significant advancements in medical and surgical treatment. Patients with CHD are, however, never cured and face unique challenges throughout their lives. In this review, we discuss the growing data suggesting accelerated aging in this population. Adults with CHD are more often and at a younger age confronted with age-related cardiovascular complications such as heart failure, arrhythmia, and coronary artery disease. These can be related to the original birth defect, complications of correction, or any residual defects. In addition, and less deductively, more systemic age-related complications are seen earlier, such as renal dysfunction, lung disease, dementia, stroke, and cancer. The occurrence of these complications at a younger age makes it imperative to further map out the aging process in patients across the spectrum of CHD. We review potential feasible markers to determine biological age and provide an overview of the current data. We provide evidence for an unmet need to further examine the aging paradigm as this stresses the higher need for care and follow-up in this unique, newly aging population. We end by exploring potential approaches to improve lifespan care.
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Affiliation(s)
- Tijs K. Tournoy
- Department of Cardiology, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Philip Moons
- KU Leuven Department of Public Health and Primary Care, University of Leuven, 3000 Leuven, Belgium
- Institute of Health and Care Sciences, University of Gothenburg, 405 30 Gothenburg, Sweden
- Department of Pediatrics and Child Health, University of Cape Town, Cape Town 7700, South Africa
| | - Bo Daelman
- KU Leuven Department of Public Health and Primary Care, University of Leuven, 3000 Leuven, Belgium
| | - Julie De Backer
- Department of Cardiology, Ghent University Hospital, 9000 Ghent, Belgium;
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium
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15
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Xenidis VA, Martsikalis PV, Kotsanopoulos KV, Palaiokostas C, Gkafas GA, Parlapani FF, Boziaris IS, Exadactylos A. The use of telomeric length as authenticity marker in fish and seafood - a new perspective in the detection of adulteration. Crit Rev Food Sci Nutr 2023; 63:12625-12636. [PMID: 35894643 DOI: 10.1080/10408398.2022.2103643] [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] [Indexed: 11/03/2022]
Abstract
In this review we propose the use of telomeric length (TL) as an authenticity marker that could provide an alternative method for differentiating fish and seafood samples or detecting fraud. Considering the ever-growing number of incidents of economically motivated fish and seafood adulteration using even more sophisticated methods to overcome current authenticity markers, the need to identify novel authenticity markers becomes essential. The TL of fish and seafood depends on individual characteristics (e.g., sex, age) and the environmental stimuli (e.g., temperature, water quality) to which these are exposed. Hence, both wild marine and freshwater populations occupying different geographical origin habitats might differ substantially because of the environmental cues affecting them. Moreover, the implementation of various rearing practices in aquaculture, such as different levels of fish and seafood density and increased ambient noise combined with site-specific environmental cues could affect TL, providing regulatory authorities with valuable information by distinguishing wild from reared populations and organic from conventional ones. In the present review the effects of both the environmental conditions and individual characteristics on the telomeric stability of fish and seafood telomeres are discussed, suggesting TL as a potential prospect authenticity marker that could be used to prevent fish and seafood adulteration.
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Affiliation(s)
- Vasileios A Xenidis
- Department of Food Science and Technology, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Petros V Martsikalis
- Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece
| | - Konstantinos V Kotsanopoulos
- Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece
| | - Christos Palaiokostas
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Georgios A Gkafas
- Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece
| | - Foteini F Parlapani
- Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece
| | - Ioannis S Boziaris
- Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece
| | - Athanasios Exadactylos
- Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece
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16
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Hoferichter F, Jentsch A, Maas L, Hageman G. Burnout among high school students is linked to their telomere length and relatedness with peers. Stress 2023; 26:2240909. [PMID: 37489893 DOI: 10.1080/10253890.2023.2240909] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 07/20/2023] [Indexed: 07/26/2023] Open
Abstract
School burnout is a serious concern, as it impairs students' health and academic success. According to the Conservation of Resources Theory, burnout results from the depletion of personal coping resources and can be counteracted by supportive social relationships. However, it is not yet clear how students' relatedness with their peers is linked to their burnout. Next to students' self-reported fatigue, biomarkers such as telomere length (TL), which presents an indicator of aging, complement stress research. To identify school-related factors that may prevent students from experiencing burnout and to link TL to students' self-reported burnout, the current study investigated how relatedness with peers as well as TL at the beginning of the school year explained students' burnout at the end of the school year. The sample included 78 students (Mage = 13.7 ± 0.7 years; 48% girls). Results of multilevel analysis in Mplus indicate that, over the school year, students with higher TL and those who experienced relatedness with their peers reported lower levels of burnout. Moreover, students who felt related to their peers exhibited a longer TL. The study implies that students' relatedness with their peers may be a promising setscrew to prevent students' burnout and support their physical health. This is one of the first studies to link TL with school-related variables such as burnout and relatedness to peers in a non-clinical student sample, providing a baseline for interventions and future interdisciplinary studies in the field of education and stress.
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Affiliation(s)
| | - Armin Jentsch
- Department of Teacher Education and School Research, University of Oslo, Norway
| | - Lou Maas
- Department of Pharmacology & Toxicology, Research Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, The Netherlands
| | - Geja Hageman
- Department of Pharmacology & Toxicology, Research Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, The Netherlands
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17
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Cottin V, Kolb M. Leukocyte telomere length: the dawn of a new era of personalised medicine in fibrotic interstitial lung diseases? Eur Respir J 2023; 62:2301852. [PMID: 38035695 DOI: 10.1183/13993003.01852-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Vincent Cottin
- Department of Respiratory Medicine, National Reference Centre for Rare Pulmonary Diseases, member of ERN-LUNG, Louis Pradel Hospital, Hospices Civils de Lyon, Lyon, France
- UMR 754, INRAE, Claude Bernard University Lyon 1, Lyon, France
| | - Martin Kolb
- Department of Medicine, McMaster University and St. Joseph's Healthcare, Hamilton, ON, Canada
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18
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Yegorov YE. Olovnikov, Telomeres, and Telomerase. Is It Possible to Prolong a Healthy Life? BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1704-1718. [PMID: 38105192 DOI: 10.1134/s0006297923110032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 12/19/2023]
Abstract
The science of telomeres and telomerase has made tremendous progress in recent decades. In this review, we consider it first in a historical context (the Carrel-Hayflick-Olovnikov-Blackburn chain of discoveries) and then review current knowledge on the telomere structure and dynamics in norm and pathology. Central to the review are consequences of the telomere shortening, including telomere position effects, DNA damage signaling, and increased genetic instability. Cell senescence and role of telomere length in its development are discussed separately. Therapeutic aspects and risks of telomere lengthening methods including use of telomerase and other approaches are also discussed.
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Affiliation(s)
- Yegor E Yegorov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia.
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19
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Houminer-Klepar N, Bord S, Epel E, Baron-Epel O. Are pregnancy and parity associated with telomere length? A systematic review. BMC Pregnancy Childbirth 2023; 23:733. [PMID: 37848852 PMCID: PMC10583451 DOI: 10.1186/s12884-023-06011-8] [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: 02/20/2023] [Accepted: 09/19/2023] [Indexed: 10/19/2023] Open
Abstract
BACKGROUND Women's reproduction requires increased energy demands, which consequently may lead to cellular damage and aging. Hence, Telomere Length (TL), a biomarker of biological aging and health status may possibly serve as a biomarker of reproductive effort. The aim of this systematic review is to evaluate telomere dynamics throughout pregnancy and the association between parity and TL. METHODS A systematic search was conducted across seven databases including CINAHL, Cochrane, PsycINFO, Proquest, PubMed; Scopus; and Web of Science, using keywords and MeSH descriptors of parity and TL. Predefined inclusion and exclusion criteria were used to screen abstracts and titles. After the removal of duplicates, 3431 articles were included in the primary screening, narrowed to 194 articles included in the full-text screening. Consensus was reached for the 14 studies that were included in the final review, and the Newcastle-Ottawa scale (NOS) was utilized to assess the quality of the selected studies. A mini meta-analysis utilized JASP 0.17.3 software and included 4 applicable studies, comprising a total of 2564 participants to quantitatively assess the estimated effect size of parity on TL. RESULTS Of the 11 studies reviewed on parity and TL, four demonstrated a negative correlation; one - a positive correlation and six -found no correlation. Studies demonstrating a negative correlation encompassed rigorous methodological practices possibly suggesting having more children is associated with enhanced telomere attrition. Of the four longitudinal studies assessing telomere dynamics throughout pregnancy, most found no change in TL from early pregnancy to postpartum suggesting pregnancy does not affect TL from early pregnancy to early postpartum. The meta-analysis revealed a negative, yet, non-significant effect, of the estimated effect size of parity on TL(ES = -0.009, p = 0.126, CI -0.021, 0.03). CONCLUSIONS Studies assessing pregnancy, parity and TL yielded mixed results, most likely due to the different research methods utilized in each study. Improvements in study design to better understand the short-term effects of pregnancy on TL and the effect of parity on TL over time, include precise definitions of parity, comparisons of different age groups, inclusion of reproductive lifespan and statistically adjusting for potential confounders in the parity and TL relationship.
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Affiliation(s)
- Nourit Houminer-Klepar
- School of Public Health, Faculty of Social Welfare and Health Sciences, University of Haifa, Mount Carmel, 31905, Haifa, Israel.
| | - Shiran Bord
- Health Systems Management Department, The Max Stern Yezreel Valley College, 1930600, Yezreel Valley, Israel
| | - Elissa Epel
- Department of Psychiatry and Behavioral Sciences, University of California, 675 18th St, San Francisco, CA, 94107, USA
| | - Orna Baron-Epel
- School of Public Health, Faculty of Social Welfare and Health Sciences, University of Haifa, Mount Carmel, 31905, Haifa, Israel
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20
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Sato M, Wai KM, Itoh K, Yang Y, Uchikawa Y, Ito Y, Nakaji S, Ihara K. Does the Protective Effect of Zinc on Telomere Length Depend on the Presence of Hypertension or Type 2 Diabetes? Results from the Iwaki Health Promotion Project, Japan. Nutrients 2023; 15:4373. [PMID: 37892448 PMCID: PMC10609662 DOI: 10.3390/nu15204373] [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: 09/22/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Telomeres, repeated TTAGGG sequences at chromosomal ends, shorten with age and indicate cellular lifespan. Zinc can protect against telomere damage through its anti-oxidative effect. Meanwhile, telomere shortening was correlated with metabolic diseases of hypertension and type 2 diabetes. The objective of this study was to investigate whether the association between zinc and telomere length differs by the presence or absence of hypertension/type 2 diabetes. This is a cross-sectional study with 1064 participants of the Iwaki area, Japan. Multiple linear regression models were performed to test the hypothesis. A higher serum zinc concentration was significantly associated with a longer G-tail length (β = 48.11, 95% confidence intervals [CI]: 25.69, 70.54, p < 0.001). By multivariate linear regression analysis, there was a significant positive association between zinc and G-tail length in both hypertensive (β = 46.84, 95%CI: 9.69, 84.0, p = 0.014) and non-hypertensive groups (β = 49.47, 95%CI: 20.75, 78.18, p = 0.001), while the association was significant only in the non-diabetes group (β = 50.82, 95%CI: 27.54, 74.11, p < 0.001). In conclusion, higher zinc concentration was significantly associated with longer G-tail length. The protective effect of zinc on G-tail did not differ by hypertension status; however, it disappeared in individuals with type 2 diabetes.
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Affiliation(s)
- Mahiro Sato
- School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan;
| | - Kyi Mar Wai
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan (Y.I.)
| | - Ken Itoh
- Department of Stress Response Science, Center for Advanced Medical Research, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan
| | - Yichi Yang
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan (Y.I.)
| | - Yuka Uchikawa
- Research and Development Division, MiRTeL Company Limited, Hiroshima 734-0001, Japan;
| | - Yukihiko Ito
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan (Y.I.)
| | - Shigeyuki Nakaji
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan (Y.I.)
- Innovation Center for Health Promotion, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan
| | - Kazushige Ihara
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8562, Japan (Y.I.)
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21
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Xu EY, Schneper LM, Notterman DA. A novel metric to improve mismatched primer selection and quantification accuracy in amplifying DNA repeats for quantitative polymerase chain reactions. PLoS One 2023; 18:e0292559. [PMID: 37812635 PMCID: PMC10561853 DOI: 10.1371/journal.pone.0292559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/23/2023] [Indexed: 10/11/2023] Open
Abstract
In quantitative polymerase chain reaction (qPCR) experiments, primers containing mismatches with respect to the template are widely used in measuring repetitive DNA elements. Primer-template mismatches may lead to underestimation of the input sample quantity due to inefficient annealing and amplification. But how primer-template mismatches affect quantification accuracy has not been rigorously investigated. In this study, we performed a series of qPCR experiments in which we tested three pairs of mismatched telomere primers (tel1/tel2, tel1b/tel2b and telg/telc) and two pairs of perfect-match reference gene primers (36B4-F/-R and IFNB1-F/-R) at three different primer concentrations under four cycling conditions. Templates used were genomic DNA from two human cell lines and oligo duplexes which contained telomere sequences, reference gene sequences, or both. We demonstrated that the underestimation of input sample quantity from reactions containing mismatched primers was not due to lower amplification efficiency (E), but due to ineffective usage of the input sample. We defined a novel concept of amplification efficacy (f) which quantifies the effectiveness of input sample amplification by primers. We have modified the conventional qPCR kinetic formula to include f, which corrects the effects of primer mismatches. We demonstrated that reactions containing mismatched telomere primer pairs had similar efficiency (E), but varying degrees of reduced efficacy (f) in comparison to those with the perfect-match gene primer pairs. Using the quantitative parameter f, underestimation of initial target by telomere primers can be adjusted to provide a more accurate measurement. Additionally, we found that the tel1b/tel2b primer set at concentration of 500 nM and 900 nM exhibited the best amplification efficacy f. This study provides a novel way to incorporate an evaluation of amplification efficacy into qPCR analysis. In turn, it improves mismatched primer selection and quantification accuracy in amplifying DNA repeats using qPCR methods.
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Affiliation(s)
- Eugenia Y. Xu
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States of America
| | - Lisa M. Schneper
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States of America
| | - Daniel A. Notterman
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States of America
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22
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Martinez S, Jones JD. A pilot study examining the relationship between chronic heroin use and telomere length among individuals of African ancestry. Pharmacol Biochem Behav 2023; 231:173631. [PMID: 37689117 PMCID: PMC10545475 DOI: 10.1016/j.pbb.2023.173631] [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: 05/01/2023] [Revised: 08/29/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
BACKGROUND Prior research has suggested a possible link between heroin use and shortened telomere length (TL), a marker of cellular aging and genomic stability. We sought to replicate these findings by examining the relationship between TL and heroin use among individuals of African ancestry. METHODS This cross-sectional study examined TL among 57 participants [17.5 % female; mean age 48.0 (±6.80) years] of African ancestry with Opioid Use Disorder (OUD) and a mean heroin use duration of 18.2 (±10.7) years. Quantitative polymerase chain reaction (qPCR) was used to calculate TL as the ratio between telomere repeat copy number (T) and a single-copy gene, copy number (S). The primary dependent variable was TL (T/S Ratio) measured in kilobase pairs. Covariates included heroin use years and personality traits. Using a hybrid approach, multiple linear regression and Bayesian linear regression examined the association of chronological age, heroin use years and personality traits with TL. RESULTS The multiple linear regression model fit the data well, R2 = 0.265, F(7,49) = 2.53, p < .026. Chronological age (β = -0.36, p = .017), neuroticism (β = 0.46, p = .044), and conscientiousness (β = 0.52, p = .040) were significant predictors of TL. Bayesian linear regression provided moderate support for the alternate hypothesis that chronological age and TL are associated, BF10 = 5.77, R2 = 0.120. The posterior summary of the coefficient was M = 0.719 (SD = 0.278, 95 % credible interval [-1.28, -0.163]). CONCLUSIONS Contrary to prior studies, these findings suggest that heroin use duration may not be significantly associated with TL among individuals of African ancestry, highlighting the need for more rigorous research to elucidate the complexity of this relationship.
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Affiliation(s)
- Suky Martinez
- Division on Substance Use Disorders, Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons and New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, USA.
| | - Jermaine D Jones
- Division on Substance Use Disorders, Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons and New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, USA
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23
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Gómez Gómez E, Cano Castiñeira R, Burgos J, Rodríguez Antolín A, Miles BJ, Martínez Salamanca JI, Bianco F, Fernández L, Calmarza I, Pastor J, Butler RG, de Pedro N. ProsTAV, a novel blood-based test for biopsy decision management in significant prostate cancer. Prostate 2023; 83:1323-1331. [PMID: 37409738 DOI: 10.1002/pros.24594] [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: 03/06/2023] [Revised: 05/26/2023] [Accepted: 06/21/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND Current pathways in early diagnosis of prostate cancer (PCa) can lead to unnecessary biopsy procedures. Here, we used telomere analysis to develop and evaluate ProsTAV®, a risk model for significant PCa (Gleason score >6), with the objective of improving the PCa diagnosis pathway. METHODS This retrospective, multicentric study analyzed telomeres from patients with serum PSA 3-10 ng/mL. High-throughput quantitative fluorescence in-situ hybridization was used to evaluate telomere-associated variables (TAVs) in peripheral blood mononucleated cells. ProsTAV® was developed by multivariate logistics regression based on three clinical variables and six TAVs. The predictive capacity and accuracy of ProsTAV® were summarized by receiver operating characteristic (ROC) curves and its clinical benefit with decision curves analysis. RESULTS Telomeres from 1043 patients were analyzed. The median age of the patients was 63 years, with a median PSA of 5.2 ng/mL and a percentage of significant PCa of 23.9%. A total of 874 patients were selected for model training and 169 patients for model validation. The area under the ROC curve of ProsTAV® was 0.71 (95% confidence interval [CI], 0.62-0.79), with a sensitivity of 0.90 (95% CI, 0.88-1.0) and specificity of 0.33 (95% CI, 0.24-0.40). The positive predictive value was 0.29 (95% CI, 0.21-0.37) and the negative predictive value was 0.91 (95% CI, 0.83-0.99). ProsTAV® would make it possible to avoid 33% of biopsies. CONCLUSIONS ProsTAV®, a predictive model based on telomere analysis through TAV, could be used to increase the prediction capacity of significant PCa in patients with PSA between 3 and 10 ng/mL.
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Affiliation(s)
- Enrique Gómez Gómez
- Department of Urology, Hospital Universitario Reina Sofía, Universidad de Córdoba, Investigación Biomédica de Córdoba, Córdoba, Spain
| | | | - Javier Burgos
- Department of Urology, Hospital Universitario Ramón y Cajal, Universidad de Alcalá, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain
| | | | - Brian J Miles
- Urologic Oncology, Houston Methodist Hospital, Houston, Texas, USA
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Moreno E, Martínez-Sanz J, Martín-Mateos R, Díaz-Álvarez J, Serrano-Villar S, Burgos-Santamaría D, Luna L, Vivancos MJ, Moreno-Zamora A, Pérez-Elías MJ, Moreno S, Dronda F, Montes ML, Sánchez-Conde M. Global DNA methylation and telomere length as markers of accelerated aging in people living with HIV and non-alcoholic fatty liver disease. BMC Genomics 2023; 24:567. [PMID: 37741970 PMCID: PMC10517540 DOI: 10.1186/s12864-023-09653-2] [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: 04/06/2023] [Accepted: 09/05/2023] [Indexed: 09/25/2023] Open
Abstract
Metabolic-dysfunction-associated fatty liver disease (MAFLD) is a comorbidity that generally increases in people living with HIV (PLWH). This condition is usually accompanied by persistent inflammation and premature immune system aging. In this prospective cohort study, we describe a straightforward methodology for quantifying biomarkers of aging, such as DNA methylation and telomere length, in PLWH and in the context of another relevant condition, such as MAFLD. Fifty-seven samples in total, thirty-eight from PLWH and nineteen from non-PLWH participants with or without MAFLD, were obtained and subjected to DNA extraction from peripheral blood mononuclear cells (PBMCs). Global DNA methylation and telomere length quantification were performed using an adapted enzyme-linked immunosorbent assay (ELISA) and qPCR, respectively. The quantification results were analysed and corrected by clinically relevant variables in this context, such as age, sex, and metabolic syndrome. Our results show an increased association of these biomarkers in PLWH regardless of their MAFLD status. Thus, we propose including the quantification of these age-related factors in studies of comorbidities. This will allow a better understanding of the effect of comorbidities of HIV infection and MAFLD and prevent their effects in these populations in the future.
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Affiliation(s)
- Elena Moreno
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain.
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain.
| | - Javier Martínez-Sanz
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Rosa Martín-Mateos
- Department of Gastroenterology and Hepatology, Metabolic Liver Disease Clinic, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- Universidad de Alcalá, 28871, Madrid, Spain
| | - Jorge Díaz-Álvarez
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Sergio Serrano-Villar
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Diego Burgos-Santamaría
- Department of Gastroenterology and Hepatology, Metabolic Liver Disease Clinic, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
| | - Laura Luna
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - María Jesús Vivancos
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Ana Moreno-Zamora
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - María Jesús Pérez-Elías
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Santiago Moreno
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
- Universidad de Alcalá, 28871, Madrid, Spain
| | - Fernando Dronda
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - María Luisa Montes
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
- Internal Medicine Service, Hospital Universitario La Paz. IdiPAZ, 28046, Madrid, Spain
| | - Matilde Sánchez-Conde
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain.
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain.
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25
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Jain A, Casanova D, Padilla AV, Paniagua Bojorges A, Kotla S, Ko KA, Samanthapudi VSK, Chau K, Nguyen MTH, Wen J, Hernandez Gonzalez SL, Rodgers SP, Olmsted-Davis EA, Hamilton DJ, Reyes-Gibby C, Yeung SCJ, Cooke JP, Herrmann J, Chini EN, Xu X, Yusuf SW, Yoshimoto M, Lorenzi PL, Hobbs B, Krishnan S, Koutroumpakis E, Palaskas NL, Wang G, Deswal A, Lin SH, Abe JI, Le NT. Premature senescence and cardiovascular disease following cancer treatments: mechanistic insights. Front Cardiovasc Med 2023; 10:1212174. [PMID: 37781317 PMCID: PMC10540075 DOI: 10.3389/fcvm.2023.1212174] [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: 04/25/2023] [Accepted: 08/03/2023] [Indexed: 10/03/2023] Open
Abstract
Cardiovascular disease (CVD) is a leading cause of morbidity and mortality, especially among the aging population. The "response-to-injury" model proposed by Dr. Russell Ross in 1999 emphasizes inflammation as a critical factor in atherosclerosis development, with atherosclerotic plaques forming due to endothelial cell (EC) injury, followed by myeloid cell adhesion and invasion into the blood vessel walls. Recent evidence indicates that cancer and its treatments can lead to long-term complications, including CVD. Cellular senescence, a hallmark of aging, is implicated in CVD pathogenesis, particularly in cancer survivors. However, the precise mechanisms linking premature senescence to CVD in cancer survivors remain poorly understood. This article aims to provide mechanistic insights into this association and propose future directions to better comprehend this complex interplay.
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Affiliation(s)
- Ashita Jain
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Diego Casanova
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | | | | | - Sivareddy Kotla
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Kyung Ae Ko
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | | | - Khanh Chau
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Minh T. H. Nguyen
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Jake Wen
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | | | - Shaefali P. Rodgers
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | | | - Dale J. Hamilton
- Department of Medicine, Center for Bioenergetics, Houston Methodist Research Institute, Houston, TX, United States
| | - Cielito Reyes-Gibby
- Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Sai-Ching J. Yeung
- Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - John P. Cooke
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Joerg Herrmann
- Cardio Oncology Clinic, Division of Preventive Cardiology, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
| | - Eduardo N. Chini
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, FL, United States
| | - Xiaolei Xu
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
| | - Syed Wamique Yusuf
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Momoko Yoshimoto
- Center for Stem Cell & Regenerative Medicine, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Philip L. Lorenzi
- Department of Bioinformatics and Computational Biology, Division of VP Research, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Brain Hobbs
- Department of Population Health, The University of Texas at Austin, Austin, TX, United States
| | - Sunil Krishnan
- Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Efstratios Koutroumpakis
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nicolas L. Palaskas
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Guangyu Wang
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Anita Deswal
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Steven H. Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jun-ichi Abe
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nhat-Tu Le
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
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26
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Caria P, Pilotto S, D'Alterio MN, Fronza M, Murgia F, Frau J, Fenu G, Dettori T, Frau DV, Atzori L, Angioni S, Cocco E, Lorefice L. Leukocyte telomere length in women with multiple sclerosis: Comparison with healthy women during pregnancy and puerperium. J Neuroimmunol 2023; 381:578137. [PMID: 37356355 DOI: 10.1016/j.jneuroim.2023.578137] [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: 04/06/2023] [Revised: 05/26/2023] [Accepted: 06/19/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVES Several studies indicated leukocyte telomere length (LTL) as a biomarker of multiple sclerosis (MS) evolution. This study aimed to investigate LTL in women with multiple sclerosis (MS) compared to that in healthy women (HW) across different reproductive phases, and to evaluate its relationship with MS activity. METHODS Blood samples were collected from women with MS and HW during the fertile phase, pregnancy, and puerperium. LTL was determined using quantitative fluorescence in situ hybridization (Q-FISH). RESULTS Blood samples from 68 women with MS (22 during fertile life, 23 during pregnancy, and 23 post-partum) and 52 HW (23 during fertile life, 20 during pregnancy, and 9 post-partum) were analyzed. During pregnancy, LTL in MS women and HW was 84.7 ± 10.5 and 77.6 ± 11.5, respectively (p < 0.005). Regression analysis showed that shorter LTL was associated with pregnancy in HW (p = 0.021); this relationship was not observed in MS women, for whom shorter LTL was related to a higher EDSS (p = 0.036). A longitudinal analysis was performed in eight MS women, showing LTL shortening from pregnancy to puerperium (p = 0.003), which was related to MS reactivation (p = 0.042). CONCLUSION Our results highlight the possible associations between LTL, reproductive biological phases, and MS activity after delivery.
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Affiliation(s)
- P Caria
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - S Pilotto
- Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Department of Medical Sciences and Public Health, University of Cagliari, Italy
| | - M N D'Alterio
- Division of Gynecology and Obstetrics, Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - M Fronza
- Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Department of Medical Sciences and Public Health, University of Cagliari, Italy
| | - F Murgia
- Clinical Metabolomics Unit, Department of Biomedical Sciences, University of Cagliari, Italy
| | - J Frau
- Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Department of Medical Sciences and Public Health, University of Cagliari, Italy
| | - G Fenu
- Department of Neurosciences, ARNAS Brotzu, Cagliari, Italy
| | - T Dettori
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - D V Frau
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - L Atzori
- Clinical Metabolomics Unit, Department of Biomedical Sciences, University of Cagliari, Italy
| | - S Angioni
- Division of Gynecology and Obstetrics, Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - E Cocco
- Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Department of Medical Sciences and Public Health, University of Cagliari, Italy
| | - L Lorefice
- Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Department of Medical Sciences and Public Health, University of Cagliari, Italy.
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27
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Wang F, McCulloh DH, Chan K, Wiltshire A, McCaffrey C, Grifo JA, Keefe DL. The Landscape of Telomere Length and Telomerase in Human Embryos at Blastocyst Stage. Genes (Basel) 2023; 14:1200. [PMID: 37372380 DOI: 10.3390/genes14061200] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/19/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
The telomere length of human blastocysts exceeds that of oocytes and telomerase activity increases after zygotic activation, peaking at the blastocyst stage. Yet, it is unknown whether aneuploid human embryos at the blastocyst stage exhibit a different profile of telomere length, telomerase gene expression, and telomerase activity compared to euploid embryos. In present study, 154 cryopreserved human blastocysts, donated by consenting patients, were thawed and assayed for telomere length, telomerase gene expression, and telomerase activity using real-time PCR (qPCR) and immunofluorescence (IF) staining. Aneuploid blastocysts showed longer telomeres, higher telomerase reverse transcriptase (TERT) mRNA expression, and lower telomerase activity compared to euploid blastocysts. The TERT protein was found in all tested embryos via IF staining with anti-hTERT antibody, regardless of ploidy status. Moreover, telomere length or telomerase gene expression did not differ in aneuploid blastocysts between chromosomal gain or loss. Our data demonstrate that telomerase is activated and telomeres are maintained in all human blastocyst stage embryos. The robust telomerase gene expression and telomere maintenance, even in aneuploid human blastocysts, may explain why extended in vitro culture alone is insufficient to cull out aneuploid embryos during in vitro fertilization.
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Affiliation(s)
- Fang Wang
- NYU Langone Fertility Center, New York, NY 10022, USA
- Department of Obstetrics and Gynecology, NYU Grossman, School of Medicine, New York, NY 10016, USA
| | | | - Kasey Chan
- Department of Obstetrics and Gynecology, NYU Grossman, School of Medicine, New York, NY 10016, USA
| | | | | | - James A Grifo
- NYU Langone Fertility Center, New York, NY 10022, USA
| | - David L Keefe
- NYU Langone Fertility Center, New York, NY 10022, USA
- Department of Obstetrics and Gynecology, NYU Grossman, School of Medicine, New York, NY 10016, USA
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28
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Cortez Cardoso Penha R, Smith-Byrne K, Atkins JR, Haycock PC, Kar S, Codd V, Samani NJ, Nelson C, Milojevic M, Gabriel AAG, Amos C, Brennan P, Hung RJ, Kachuri L, Mckay JD. Common genetic variations in telomere length genes and lung cancer: a Mendelian randomisation study and its novel application in lung tumour transcriptome. eLife 2023; 12:e83118. [PMID: 37079368 PMCID: PMC10118386 DOI: 10.7554/elife.83118] [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: 08/31/2022] [Accepted: 04/03/2023] [Indexed: 04/21/2023] Open
Abstract
Background Genome-wide association studies (GWASs) have identified genetic susceptibility variants for both leukocyte telomere length (LTL) and lung cancer susceptibility. Our study aims to explore the shared genetic basis between these traits and investigate their impact on somatic environment of lung tumours. Methods We performed genetic correlation, Mendelian randomisation (MR), and colocalisation analyses using the largest available GWASs summary statistics of LTL (N=464,716) and lung cancer (N=29,239 cases and 56,450 controls). Principal components analysis based on RNA-sequencing data was used to summarise gene expression profile in lung adenocarcinoma cases from TCGA (N=343). Results Although there was no genome-wide genetic correlation between LTL and lung cancer risk, longer LTL conferred an increased risk of lung cancer regardless of smoking status in the MR analyses, particularly for lung adenocarcinoma. Of the 144 LTL genetic instruments, 12 colocalised with lung adenocarcinoma risk and revealed novel susceptibility loci, including MPHOSPH6, PRPF6, and POLI. The polygenic risk score for LTL was associated with a specific gene expression profile (PC2) in lung adenocarcinoma tumours. The aspect of PC2 associated with longer LTL was also associated with being female, never smokers, and earlier tumour stages. PC2 was strongly associated with cell proliferation score and genomic features related to genome stability, including copy number changes and telomerase activity. Conclusions This study identified an association between longer genetically predicted LTL and lung cancer and sheds light on the potential molecular mechanisms related to LTL in lung adenocarcinomas. Funding Institut National du Cancer (GeniLuc2017-1-TABAC-03-CIRC-1-TABAC17-022), INTEGRAL/NIH (5U19CA203654-03), CRUK (C18281/A29019), and Agence Nationale pour la Recherche (ANR-10-INBS-09).
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Affiliation(s)
- Ricardo Cortez Cardoso Penha
- Genomic Epidemiology branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO)LyonFrance
| | - Karl Smith-Byrne
- Cancer Epidemiology Unit, University of OxfordOxfordUnited Kingdom
| | - Joshua R Atkins
- Genomic Epidemiology branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO)LyonFrance
| | - Philip C Haycock
- MRC Integrative Epidemiology Unit, Bristol Population Health Science Institute, Bristol Medical School (PHS)BristolUnited Kingdom
| | - Siddhartha Kar
- MRC Integrative Epidemiology Unit, Bristol Population Health Science Institute, Bristol Medical School (PHS)BristolUnited Kingdom
| | - Veryan Codd
- Department of Cardiovascular Sciences, University of LeicesterLeicesterUnited Kingdom
- NIHR Leicester Biomedical Research Centre, Glenfield HospitalLeicesterUnited Kingdom
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, University of LeicesterLeicesterUnited Kingdom
- NIHR Leicester Biomedical Research Centre, Glenfield HospitalLeicesterUnited Kingdom
| | - Christopher Nelson
- Department of Cardiovascular Sciences, University of LeicesterLeicesterUnited Kingdom
- NIHR Leicester Biomedical Research Centre, Glenfield HospitalLeicesterUnited Kingdom
| | - Maja Milojevic
- Genomic Epidemiology branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO)LyonFrance
| | - Aurélie AG Gabriel
- Ludwig Lausanne Branch, Faculty of Biology and MedicineLausanneSwitzerland
| | - Christopher Amos
- Institute for Clinical and Translational Research, Baylor College of MedicineHoustonUnited States
| | - Paul Brennan
- Genomic Epidemiology branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO)LyonFrance
| | - Rayjean J Hung
- Lunenfeld-Tanenbaum Research Institute, Sinai HealthTorontoCanada
| | - Linda Kachuri
- Departament of Epidemiology and Population Health, Stanford UniversityStanfordUnited States
| | - James D Mckay
- Genomic Epidemiology branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO)LyonFrance
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29
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Chen X, Hao Z, Pan H, Liu W, Lu L, Zhang M, He X, Yi H, Tang S. Relationship between common telomere length-related genetic variations, telomere length, and risk of antituberculosis drug-induced hepatotoxicity in Chinese Han population: As assessed for causality using the updated Roussel Uclaf Causality Assessment Method. Fundam Clin Pharmacol 2023. [PMID: 36855016 DOI: 10.1111/fcp.12885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 02/05/2023] [Accepted: 02/15/2023] [Indexed: 03/02/2023]
Abstract
Antituberculosis drug-induced hepatotoxicity (ATDH) is a significant threat to tuberculosis control, and two recent studies indicated that leukocyte telomere length (LTL) might be a potential biomarker for ATDH. This study aimed to investigate the relationship between common telomere length-related genetic variations, LTL, and risk of ATDH in Eastern Chinese antituberculosis treatment patients. A 1:4 matched case-control study was conducted among 79 ATDH cases assessed for causality using the updated RUCAM and 316 controls. LTL was determined by quantitative real-time PCR, and nine SNPs involved in telomere biology reported by previous GWAS were assessed. Conditional logistic regression model was used to estimate the association between genotypes and risk of ATDH with odds ratios (ORs) and 95% confidence intervals (CIs). The average RUCAM score of cases was 7.1. The average LTL in cases was significantly shorter than that in controls (median = 1.239 vs. 1.481, P = 0.032). Differences in the distribution of LTL were statistically significant among three genotypes of SNP rs2736098 (CC vs. CT vs. TT, median = 1.544 vs. 1.356 vs. 1.337, P = 0.026) and rs2853677 (AA vs. AG vs. GG, median = 1.511 vs. 1.544 vs. 1.159, P = 0.005) in TERT. SNP rs7675998 in NAF1 was statistically associated with the risk of ATDH under the dominant model (adjusted OR = 1.725, 95% CI: 1.021-2.913, P = 0.042). This is the first study to investigate the relationship of LTL, common telomere length-related variations, and risk of ATDH. SNP rs2736098 and rs2853677 in TERT were significantly associated with LTL, and SNP rs7675998 in NAF1 may be associated with ATDH in Chinese population.
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Affiliation(s)
- Xinyu Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Zhuolu Hao
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Hongqiu Pan
- Department of Tuberculosis, The Third People's Hospital of Zhenjiang Affiliated to Jiangsu University, Zhenjiang, China
| | - Wenpei Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Lihuan Lu
- Department of Tuberculosis, The Second People's Hospital of Changshu, Changshu, China
| | - Meiling Zhang
- Department of Infectious Disease, The Jurong Hospital Affiliated to Jiangsu University, Jurong, China
| | - Xiaomin He
- Department of Infectious Disease, The People's Hospital of Taixing, Taixing, China
| | - Honggang Yi
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Shaowen Tang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
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30
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Sumner JA, Cleveland S, Chen T, Gradus JL. Psychological and biological mechanisms linking trauma with cardiovascular disease risk. Transl Psychiatry 2023; 13:25. [PMID: 36707505 PMCID: PMC9883529 DOI: 10.1038/s41398-023-02330-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of death and disability worldwide, and experiences of psychological trauma have been associated with subsequent CVD onset. Identifying key pathways connecting trauma with CVD has the potential to inform more targeted screening and intervention efforts to offset elevated cardiovascular risk. In this narrative review, we summarize the evidence for key psychological and biological mechanisms linking experiences of trauma with CVD risk. Additionally, we describe various methodologies for measuring these mechanisms in an effort to inform future research related to potential pathways. With regard to mechanisms involving posttraumatic psychopathology, the vast majority of research on psychological distress after trauma and CVD has focused on posttraumatic stress disorder (PTSD), even though posttraumatic psychopathology can manifest in other ways as well. Substantial evidence suggests that PTSD predicts the onset of a range of cardiovascular outcomes in trauma-exposed men and women, yet more research is needed to better understand posttraumatic psychopathology more comprehensively and how it may relate to CVD. Further, dysregulation of numerous biological systems may occur after trauma and in the presence of posttraumatic psychopathology; these processes of immune system dysregulation and elevated inflammation, oxidative stress, mitochondrial dysfunction, renin-angiotensin system dysregulation, and accelerated biological aging may all contribute to subsequent cardiovascular risk, although more research on these pathways in the context of traumatic stress is needed. Given that many of these mechanisms are closely intertwined, future research using a systems biology approach may prove fruitful for elucidating how processes unfold to contribute to CVD after trauma.
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Affiliation(s)
- Jennifer A Sumner
- Department of Psychology, University of California, Los Angeles, Los Angeles, CA, USA.
| | - Shiloh Cleveland
- Department of Psychology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Tiffany Chen
- Department of Psychology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jaimie L Gradus
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
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Raftopoulou C, Abawi O, Sommer G, Binou M, Paltoglou G, Flück CE, van den Akker ELT, Charmandari E. Leukocyte Telomere Length in Children With Congenital Adrenal Hyperplasia. J Clin Endocrinol Metab 2023; 108:443-452. [PMID: 36181470 DOI: 10.1210/clinem/dgac560] [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: 06/02/2022] [Revised: 09/21/2022] [Indexed: 01/20/2023]
Abstract
CONTEXT Exposure to chronic stress and hypercortisolism is associated with decreased leukocyte telomere length (LTL), a marker for biological aging and cardiovascular disease. Children with congenital adrenal hyperplasia (CAH) are treated with glucocorticoids. OBJECTIVE To investigate LTL in children with CAH. METHODS In this prospective observational cohort study, conducted at 4 academic pediatric endocrinology outpatient clinics, children with genetically confirmed CAH were assessed at 2 follow-up visits (mean 4.1 ± 0.7 months apart). At each visit, LTL was determined by quantitative real-time PCR. All subjects underwent detailed clinical and endocrinologic evaluation and were classified as undertreated, optimally treated, or overtreated, accordingly. The influence of clinical factors on LTL was investigated using linear mixed models adjusted for age, sex, and BMI-z. RESULTS We studied 76 patients, of whom 31 (41%) were girls, 63 (83%) had classic CAH, 67 (88%) received hydrocortisone, and 8 (11%) prednisolone. Median age at first visit was 12.0 years (IQR, 6.3-15.1), and median BMI-z was 0.51 (IQR, -0.12 to 1.43). LTL was shorter in patients with classic vs nonclassic CAH (-0.29, P = 0.012), in overtreated than in optimally treated patients (-0.07, P = 0.002), and patients receiving prednisolone compared with hydrocortisone (-0.34, P < 0.001). LTL was not associated with undertreatment or daily hydrocortisone-equivalent dose (P > 0.05). CONCLUSION LTL is shorter in patients with classic than nonclassic CAH, and in those who are overtreated with hydrocortisone or treated with long-acting glucocorticoids. These findings may be attributed to chronic exposure to supraphysiologic glucocorticoid concentrations and indicate that LTL may be used as a biomarker for monitoring glucocorticoid treatment.
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Affiliation(s)
- Christina Raftopoulou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Ozair Abawi
- Division of Endocrinology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam 3000 CA, The Netherlands
| | - Grit Sommer
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Bern and Department of BioMedical Research, University Hospital Inselspital, University of Bern, Bern 3010, Switzerland
| | - Maria Binou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - George Paltoglou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Christa E Flück
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Bern and Department of BioMedical Research, University Hospital Inselspital, University of Bern, Bern 3010, Switzerland
| | - Erica L T van den Akker
- Division of Endocrinology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam 3000 CA, The Netherlands
| | - E Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
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Sabot D, Lovegrove R, Stapleton P. The association between sleep quality and telomere length: A systematic literature review. Brain Behav Immun Health 2023; 28:100577. [PMID: 36691437 PMCID: PMC9860369 DOI: 10.1016/j.bbih.2022.100577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/20/2022] [Indexed: 01/10/2023] Open
Abstract
Several sleep parameters present an elevated risk for processes that contribute to cellular aging. Short sleep duration, sleep apnoea, and insomnia are significantly associated with shorter telomeres, a biological marker of cellular aging. However, there has been no review or analysis of studies that have examined the association between the psychological construct of sleep quality and telomere length. The present study aimed to provide a systematic review of the association between sleep quality and telomere length. A systematic review of English articles was conducted using MEDLINE/PubMed, PsycINFO, Google Scholar, and Web of Science electronic databases, with the final search conducted on 3rd September 2021. Search terms included sleep quality, poor sleep, insomnia, sleep difficulties, sleep issue*, non-restorative sleep, telomere*, cellular aging, and immune cell telomere length. Study eligibility criteria included human participants aged 18 years or older and a reproducible methodology. Study appraisal and synthesis were completed using a systematic search in line with a PICOS approach (P = Patient, problem, or population; I = Intervention, prognostic factor, exposure; C = Comparison, control, or comparator; O = Outcomes; S = Study designs). Twenty-two studies met review inclusion criteria. Qualitative synthesis of the literature indicated insufficient evidence overall to support a significant association between sleep quality and telomere length. Limitations across studies were addressed, such as the assessment of examined constructs. Findings highlight important targets for future research, including the standardised operationalisation of the sleep quality construct and experimental study designs. Research in this area has clinical significance by identifying possible mechanisms that increase the risk for age-related disease and mortality. PROSPERO Registration No.: CRD 42021233139.
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Affiliation(s)
- Debbie Sabot
- Corresponding author. School of Psychology, Faculty of Society and Design, Bond University, Robina, QLD, 4227, Australia.
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López-Armas GDC, Ramos-Márquez ME, Navarro-Meza M, Macías-Islas MÁ, Saldaña-Cruz AM, Zepeda-Moreno A, Siller-López F, Cruz-Ramos JA. Leukocyte Telomere Length Predicts Severe Disability in Relapsing-Remitting Multiple Sclerosis and Correlates with Mitochondrial DNA Copy Number. Int J Mol Sci 2023; 24:ijms24020916. [PMID: 36674427 PMCID: PMC9862686 DOI: 10.3390/ijms24020916] [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: 10/21/2022] [Revised: 12/12/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic autoimmune inflammatory disease that affects the nervous system. Peripheral blood leukocyte telomere length (LTL) and mitochondrial DNA copy number (mtDNA-CN) are potential biomarkers of neurological disability and neural damage. Our objective was to assess the LTL and mtDNA-CN in relapsing-remitting MS (RRMS). We included 10 healthy controls, 75 patients with RRMS, 50 of whom had an Expanded Disability Status Scale (EDSS) from 0 to 3 (mild to moderate disability), and 25 had an EDSS of 3.5 to 7 (severe disability). We use the Real-Time Polymerase Chain Reaction (qPCR) technique to quantify absolute LTL and absolute mtDNA-CN. ANOVA test show differences between healthy control vs. severe disability RRMS and mild-moderate RRMS vs. severe disability RRMS (p = 0.0130). LTL and mtDNA-CN showed a linear correlation in mild-moderate disability RRMS (r = 0.378, p = 0.007). Furthermore, we analyzed LTL between RRMS groups with a ROC curve, and LTL can predict severe disability (AUC = 0.702, p = 0.0018, cut-off < 3.0875 Kb, sensitivity = 75%, specificity = 62%), whereas the prediction is improved with a logistic regression model including LTL plus age (AUC = 0.762, p = 0.0001, sensitivity = 79.17%, specificity = 80%). These results show that LTL is a biomarker of disability in RRMS and is correlated with mtDNA-CN in mild-moderate RRMS patients.
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Affiliation(s)
- Gabriela del Carmen López-Armas
- Laboratorio de Biomédica-Mecatrónica, Subdirección de Investigación y Extensión, Centro de Enseñanza Técnica Industrial Plantel Colomos, Guadalajara 44638, Mexico
| | - Martha Eloisa Ramos-Márquez
- Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Mexico
| | - Mónica Navarro-Meza
- Laboratorio C. de Neuronutrición y Memoria, Departamento de Promoción, Preservación y Desarrollo de la Salud, Centro Universitario del Sur, Universidad de Guadalajara, Ciudad Guzmán 49000, Mexico
| | - Miguel Ángel Macías-Islas
- Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Mexico
| | - Ana Miriam Saldaña-Cruz
- Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Mexico
| | - Abraham Zepeda-Moreno
- Departamento de Clínicas de la Reproducción Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Mexico
| | - Fernando Siller-López
- Programa de Bacteriología, Facultad de Ciencias de la Salud, Universidad Católica de Manizales, Manizales 170002, Colombia
| | - José Alfonso Cruz-Ramos
- Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Mexico
- Coordinación de Investigación, Instituto Jalisciense de Cancerología, Guadalajara 44280, Mexico
- Correspondence:
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34
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Lyčka M, Fajkus P, Jenner LP, Sýkorová E, Fojtová M, Peska V. Identification of the Sequence and the Length of Telomere DNA. Methods Mol Biol 2023; 2672:285-302. [PMID: 37335484 DOI: 10.1007/978-1-0716-3226-0_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Telomeres are essential nucleoprotein structures at the very ends of linear eukaryote chromosomes. They shelter the terminal genome territories against degradation and prevent the natural chromosome ends from being recognized by repair mechanisms as double-strand DNA breaks.There are two basic characteristics of telomeric DNA, its sequence and its length. The telomere sequence is important as a "landing area" for specific telomere-binding proteins, which function as signals and moderate the interactions required for correct telomere function. While the sequence forms the proper "landing surface" of telomeric DNA, its length is similarly important. Too short or exceptionally long telomere DNA cannot perform its function properly. In this chapter, methods for the investigation of these two basic telomere DNA characteristics are described, namely, telomere motif identification and telomere length measurement.
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Affiliation(s)
- Martin Lyčka
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Petr Fajkus
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
- Department of Cell Biology and Radiobiology, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Leon P Jenner
- Department of Cell Biology and Radiobiology, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Eva Sýkorová
- Department of Cell Biology and Radiobiology, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Miloslava Fojtová
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic.
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic.
| | - Vratislav Peska
- Department of Cell Biology and Radiobiology, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.
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35
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Alonso-Gonzalez A, Tosco-Herrera E, Molina-Molina M, Flores C. Idiopathic pulmonary fibrosis and the role of genetics in the era of precision medicine. Front Med (Lausanne) 2023; 10:1152211. [PMID: 37181377 PMCID: PMC10172674 DOI: 10.3389/fmed.2023.1152211] [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: 01/27/2023] [Accepted: 04/03/2023] [Indexed: 05/16/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic, rare progressive lung disease, characterized by lung scarring and the irreversible loss of lung function. Two anti-fibrotic drugs, nintedanib and pirfenidone, have been demonstrated to slow down disease progression, although IPF mortality remains a challenge and the patients die after a few years from diagnosis. Rare pathogenic variants in genes that are involved in the surfactant metabolism and telomere maintenance, among others, have a high penetrance and tend to co-segregate with the disease in families. Common recurrent variants in the population with modest effect sizes have been also associated with the disease risk and progression. Genome-wide association studies (GWAS) support at least 23 genetic risk loci, linking the disease pathogenesis with unexpected molecular pathways including cellular adhesion and signaling, wound healing, barrier function, airway clearance, and innate immunity and host defense, besides the surfactant metabolism and telomere biology. As the cost of high-throughput genomic technologies continuously decreases and new technologies and approaches arise, their widespread use by clinicians and researchers is efficiently contributing to a better understanding of the pathogenesis of progressive pulmonary fibrosis. Here we provide an overview of the genetic factors known to be involved in IPF pathogenesis and discuss how they will continue to further advance in this field. We also discuss how genomic technologies could help to further improve IPF diagnosis and prognosis as well as for assessing genetic risk in unaffected relatives. The development and validation of evidence-based guidelines for genetic-based screening of IPF will allow redefining and classifying this disease relying on molecular characteristics and contribute to the implementation of precision medicine approaches.
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Affiliation(s)
- Aitana Alonso-Gonzalez
- Unidad de Investigación, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
- Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Eva Tosco-Herrera
- Unidad de Investigación, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
| | - Maria Molina-Molina
- Servei de Pneumologia, Laboratori de Pneumologia Experimental, IDIBELL, Barcelona, Spain
- Campus de Bellvitge, Universitat de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Carlos Flores
- Unidad de Investigación, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
- Facultad de Ciencias de la Salud, Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain
- *Correspondence: Carlos Flores,
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36
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Sagris M, Theofilis P, Antonopoulos AS, Tsioufis K, Tousoulis D. Telomere Length: A Cardiovascular Biomarker and a Novel Therapeutic Target. Int J Mol Sci 2022; 23:ijms232416010. [PMID: 36555658 PMCID: PMC9781338 DOI: 10.3390/ijms232416010] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/04/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022] Open
Abstract
Coronary artery disease (CAD) is a multifactorial disease with a high prevalence, particularly in developing countries. Currently, the investigation of telomeres as a potential tool for the early detection of the atherosclerotic disease seems to be a promising method. Telomeres are repetitive DNA sequences located at the extremities of chromosomes that maintain genetic stability. Telomere length (TL) has been associated with several human disorders and diseases while its attrition rate varies significantly in the population. The rate of TL shortening ranges between 20 and 50 bp and is affected by factors such as the end-replication phenomenon, oxidative stress, and other DNA-damaging agents. In this review, we delve not only into the pathophysiology of TL shortening but also into its association with cardiovascular disease and the progression of atherosclerosis. We also provide current and future treatment options based on TL and telomerase function, trying to highlight the importance of these cutting-edge developments and their clinical relevance.
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Hatse S, Serena M, Vulsteke C, Punie K, Neven P, Smeets A, Laenen A, Wildiers H. Impact of baseline telomere length on survival and chemotherapy related toxicity in breast cancer patients receiving (neo)adjuvant anthracycline containing chemotherapy. Transl Oncol 2022; 26:101551. [PMID: 36219936 PMCID: PMC9558049 DOI: 10.1016/j.tranon.2022.101551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/09/2022] [Accepted: 09/26/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE The aim of this study is to assess baseline mean leukocyte telomere length (TL) as a potential predictive factor for chemotherapy toxicity and a prognostic marker for long-term outcome in early breast cancer (BC) patients. METHODS 445 BC patients were selected, diagnosed between 2007 and 2010 with early BC and treated with (neo)adjuvant fluorouracil, epirubicin and cyclophosphamide (FEC) or with FEC and Docetaxel (FEC-D). RT-qPCR was performed on germline DNA samples collected at diagnosis before any treatment, to measure mean leukocyte TL. Uni- and multivariable logistic regression or Cox proportional hazard regression analyses were carried out to assess correlation between baseline TL and toxicity parameters (derived from the medical chart) or longer-term outcome. RESULTS Baseline TL correlated with age as expected (p = 0.005), but not with febrile neutropenia (n = 97), left ventricular ejection fraction >10% decrease (n = 17) nor other toxicity endpoints measured (all p > 0.05). TL was neither associated with overall survival, breast cancer specific survival or distant disease-free survival (all p > 0.05). CONCLUSIONS Baseline TL is not associated with chemotherapy-related toxicity nor long-term outcome in BC patients.
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Affiliation(s)
- Sigrid Hatse
- Department of Oncology, Laboratory of Experimental Oncology, KU Leuven, Leuven, Belgium
| | - Marta Serena
- Department of Oncology, Laboratory of Experimental Oncology, KU Leuven, Leuven, Belgium
| | - Christof Vulsteke
- Department of General Medical Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Kevin Punie
- Department of Oncology, Laboratory of Experimental Oncology, KU Leuven, Leuven, Belgium; Department of General Medical Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium; Multidisciplinary Breast Centre, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Patrick Neven
- Multidisciplinary Breast Centre, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Ann Smeets
- Multidisciplinary Breast Centre, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Annouschka Laenen
- Interuniversity Centre for Biostatistics and Statistical Bioinformatics, Leuven, Belgium
| | - Hans Wildiers
- Department of Oncology, Laboratory of Experimental Oncology, KU Leuven, Leuven, Belgium; Department of General Medical Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium; Multidisciplinary Breast Centre, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium.
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38
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Barbosa ARC, Nunes DP, Lima DB, Colombo FA, Nunes JB, Santos Orlandi AAD, Rocha GDS, Pereira DS, Corona LP, Brito TRPD. Association of Social Support Network with Telomere Length: A Cross-Sectional Study with Community-Dwelling Older Adults. Rejuvenation Res 2022; 25:253-259. [PMID: 36103374 DOI: 10.1089/rej.2022.0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Considering that telomere length can be determined not only by issues related to cell biology but also by aspects related to social factors and environmental exposures, studies on the relationship between social aspects and telomere length can help to better understand the still scarcely known aspects of the human aging process. Thus, this research seeks to verify whether social support networks are associated with telomere length in older adults. This is a cross-sectional study conducted with 448 individuals aged at least 60 years living in the urban area of an inland Brazilian municipality. Relative quantification of telomere length was obtained through real-time qPCR. Social support was assessed through the Medical Outcomes Study Social Support Scale. Descriptive statistics and multiple logistic regression were used in data analysis. The evaluated social support networks for older adults consist in a mean of 16.4 people, and the percentage of older adults who reported up to five members in their network was 27.75%. Shorter telomere length was identified in 25% of the participants, and the older adults who reported having up to five members in their support network were more likely to have a shorter telomere length than those who reported more numerous networks (odds ratio: 1.89, p = 0.011) regardless of gender, age, household arrangement, cognitive decline, and dependence for basic and instrumental activities of daily living, which suggests that measures that stimulate the creation and maintenance of social support networks should be implemented to improve older adults' health.
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Wang C, Gu Y, Zhou J, Zang J, Ling X, Li H, Hu L, Xu B, Zhang B, Qin N, Lv H, Duan W, Jiang Y, He Y, Jiang T, Chen C, Han X, Zhou K, Xu B, Liu X, Tao S, Jiang Y, Du J, Dai J, Diao F, Lu C, Guo X, Huo R, Liu J, Lin Y, Xia Y, Jin G, Ma H, Shen H, Hu Z. Leukocyte telomere length in children born following blastocyst-stage embryo transfer. Nat Med 2022; 28:2646-2653. [PMID: 36522605 DOI: 10.1038/s41591-022-02108-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 10/25/2022] [Indexed: 12/23/2022]
Abstract
Perinatal and childhood adverse outcomes associated with assisted reproductive technology (ART) has been reported, but it remains unknown whether the initial leukocyte telomere length (LTL), which is an indicator of age-related phenotypes in later life, is affected. Here, we estimated the LTLs of 1,137 individuals from 365 families, including 202 children conceived by ART and 205 children conceived spontaneously from two centers of the China National Birth Cohort, using whole-genome sequencing (WGS) data. One-year-old children conceived by ART had shorter LTLs than those conceived spontaneously (beta, -0.36; P = 1.29 × 10-3) after adjusting for plurality, sex and other potential confounding factors. In particular, blastocyst-stage embryo transfer was associated with shorter LTL (beta, -0.54, P = 2.69 × 10-3) in children conceived by ART. The association was validated in 586 children conceived by ART from five centers using different LTL quantification methods (that is, WGS or qPCR). Blastocyst-stage embryo transfer resulted in shorter telomere lengths in mice at postnatal day 1 (P = 2.10 × 10-4) and mice at 6 months (P = 0.042). In vitro culturing of mice embryos did not result in shorter telomere lengths in the late cleavage stage, but it did suppress telomerase activity in the early blastocyst stage. Our findings demonstrate the need to evaluate the long-term consequences of ART, particularly for aging-related phenotypes, in children conceived by ART.
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Affiliation(s)
- Cheng Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yayun Gu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jun Zhou
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jie Zang
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiufeng Ling
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Reproduction, The Affiliated Obstetrics and Gynecology Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, Jiangsu, China
| | - Hong Li
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Reproductive Genetic Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Lingmin Hu
- Department of Reproduction, Changzhou Maternity and Child Health Care Hospital, Changzhou Medical Center, Nanjing Medical University, Changzhou, Jiangsu, China
| | - Bei Xu
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Bo Zhang
- Center for Reproductive Medicine, The Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Na Qin
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hong Lv
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Weiwei Duan
- Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yue Jiang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuanlin He
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Tao Jiang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Biostatistics, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Congcong Chen
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiumei Han
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Kun Zhou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Bo Xu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaoyu Liu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shiyao Tao
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yangqian Jiang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiangbo Du
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Juncheng Dai
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Feiyang Diao
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chuncheng Lu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xuejiang Guo
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ran Huo
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiayin Liu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China.,Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuan Lin
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China.,Department of Maternal, Child and Adolescent Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Guangfu Jin
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Hongxia Ma
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Hongbing Shen
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Zhibin Hu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China. .,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China. .,State Key Laboratory of Reproductive Medicine (Suzhou Centre), The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China.
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40
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Ramírez-Sanabria M, Martínez-Magaña J, Nicolini-Sánchez H, Guzmán-Sánchez R, Genis-Mendoza AD. [Association between telomere length and cognitive impairment in older adults]. Rev Esp Geriatr Gerontol 2022; 57:320-324. [PMID: 36319501 DOI: 10.1016/j.regg.2022.09.006] [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: 05/18/2022] [Revised: 09/06/2022] [Accepted: 09/19/2022] [Indexed: 12/04/2022]
Abstract
INTRODUCTION Cognitive impairment is a transition stage between normal aging and dementia, the prevalence of last one increases with age; the damage of the functions and physical integrity, places the older adult in a greater susceptibility to get sick. Telomere length is a hallmark of aging to characterize this phenotype, as well as a biomarker that reflects the underlying state of the cell. In this work, the relative length of telomeres in older adults with cognitive impairment was correlated. MATERIAL AND METHODS Observational-analytical study, in samples of adult patients older than 65 years with and without cognitive impairment, in whom the relative length of telomeres was measured. RESULTS Ninety samples of older adults were included in the study and in the association analysis according to multivariate logistic models, cognitive impairment showed almost five times more risk for telomere shortening in relation to the presence of the diagnosis of cognitive impairment (Odds ratio 4.88, p=0.027). CONCLUSIONS When correlating the relative length of telomeres in older adults diagnosed with cognitive impairment, this association was confirmed for shorter.
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Affiliation(s)
- Martha Ramírez-Sanabria
- Alta Especialidad en Medicina Genómica, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Jaime Martínez-Magaña
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Humberto Nicolini-Sánchez
- Alta Especialidad en Medicina Genómica, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Rafael Guzmán-Sánchez
- Alta Especialidad en Medicina Genómica, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Alma Delia Genis-Mendoza
- Hospital Psiquiátrico Innfantil Dr. Juan N. Navarro, Servicios de Atención Psiquiétrica, Secretaría de Salud, Ciudad de México, México.
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41
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Bentz EJ, Ophir AG. Chromosome-scale genome assembly of the African giant pouched rat (Cricetomys ansorgei) and evolutionary analysis reveals evidence of olfactory specialization. Genomics 2022; 114:110521. [PMID: 36351561 DOI: 10.1016/j.ygeno.2022.110521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 10/28/2022] [Accepted: 11/04/2022] [Indexed: 11/07/2022]
Abstract
The Southern giant pouched rat, Cricetomys ansorgei, is a large rodent best known for its ability to detect landmines using its impressive sense of smell. Their powerful chemosensory abilities enable subtle discrimination of chemical social signals, and female pouched rats demonstrate a unique reproductive physiology hypothesized to be mediated by pheromonal mechanisms. Thus, C. ansorgei represents a novel mammalian model for chemosensory physiology, social behavior, and pheromonal control of reproductive physiology. We present the first chromosome-scale genomic sequence of the pouched rat encoding 22,671 protein coding genes, including 1571 olfactory receptors, and provide a glance into the evolutionary history of this species. Functional enrichment analysis reveals genetic expansions specific to the pouched rat are enriched for functions related to olfactory specialization. Overall, this assembly is of reference-quality, and will serve as a useful and informative genomic sequence on which we can confidently base future molecular research involving the pouched rat.
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Affiliation(s)
- Ehren J Bentz
- Department of Psychology, Cornell University, Ithaca, NY, USA.
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42
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Yamaguchi I, Ooe R, Wang A. Water‐soluble
π‐conjugated
polyfluorene bearing
6‐
N
1
‐hexylcytosine
and
6‐trimethylammoniumhexyl
side chains: Synthesis, chemical properties, and sensing ability for nucleoside and telomere
DNA. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Isao Yamaguchi
- Department of Materials Chemistry Shimane University Matsue Japan
| | - Ryoga Ooe
- Department of Materials Chemistry Shimane University Matsue Japan
| | - Aohan Wang
- Department of Materials Chemistry Shimane University Matsue Japan
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43
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Chik HYJ, Sparks AM, Schroeder J, Dugdale HL. A meta-analysis on the heritability of vertebrate telomere length. J Evol Biol 2022; 35:1283-1295. [PMID: 35932478 DOI: 10.1111/jeb.14071] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/03/2022] [Accepted: 07/09/2022] [Indexed: 01/07/2023]
Abstract
Telomere dynamics are linked with both cellular and organismal senescence, and life history, individual quality and health. Telomere dynamics, particularly telomere length, have therefore garnered much research interest in evolutionary biology. To examine the evolution of telomere length, it is important to quantify its heritability, the proportion of total variation explained by additive genetic effects. Many studies have quantified telomere length heritability, but estimates are varied, and no general conclusion has been drawn. Additionally, it is unclear whether biological and methodological factors influence telomere length heritability estimates. We present the first meta-analysis of telomere length heritability, using 104 estimates from 43 studies over 18 vertebrate species. We calculated an overall mean heritability and examined how estimates varied by study, phylogeny, species-specific ecology, environmental setting, age at sampling, laboratory methods, statistical methods, sex and repeated measurements. Overall heritability was moderate (44.9%, 95% CI: 25.2-64.7%), and there was considerable heterogeneity in heritability estimates, in particular among studies and estimates. Laboratory method influenced heritability estimates, with in-gel hybridization TRF yielding higher heritabilities than qPCR and Southern blot TRF. There was also an effect from statistical method, with twin-based and SNP-based estimates lower than correlation-based or pedigree-based estimates. Our results highlight an overall heritable basis of telomere length, and we recommend future research on a wider range of taxa, and the use of variance-partitioning methods with relatedness or SNP data over correlation methods to minimize heritability estimation bias.
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Affiliation(s)
- Heung Ying Janet Chik
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands.,School of Natural Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Alexandra M Sparks
- Faculty of Biological Sciences, School of Biology, University of Leeds, Leeds, UK.,School of Biosciences, University of Sheffield, Sheffield, UK
| | - Julia Schroeder
- Department of Life Sciences, Imperial College London Silwood Park, Ascot, UK
| | - Hannah L Dugdale
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
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44
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Jung J, McCartney DL, Wagner J, Rosoff DB, Schwandt M, Sun H, Wiers CE, de Carvalho LM, Volkow ND, Walker RM, Campbell A, Porteous DJ, McIntosh AM, Marioni RE, Horvath S, Evans KL, Lohoff FW. Alcohol use disorder is associated with DNA methylation-based shortening of telomere length and regulated by TESPA1: implications for aging. Mol Psychiatry 2022; 27:3875-3884. [PMID: 35705636 PMCID: PMC9708583 DOI: 10.1038/s41380-022-01624-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 04/27/2022] [Accepted: 05/11/2022] [Indexed: 02/08/2023]
Abstract
Chronic heavy alcohol consumption is associated with increased mortality and morbidity and often leads to premature aging; however, the mechanisms of alcohol-associated cellular aging are not well understood. In this study, we used DNA methylation derived telomere length (DNAmTL) as a novel approach to investigate the role of alcohol use on the aging process. DNAmTL was estimated by 140 cytosine phosphate guanines (CpG) sites in 372 individuals with alcohol use disorder (AUD) and 243 healthy controls (HC) and assessed using various endophenotypes and clinical biomarkers. Validation in an independent sample of DNAmTL on alcohol consumption was performed (N = 4219). Exploratory genome-wide association studies (GWAS) on DNAmTL were also performed to identify genetic variants contributing to DNAmTL shortening. Top GWAS findings were analyzed using in-silico expression quantitative trait loci analyses and related to structural MRI hippocampus volumes of individuals with AUD. DNAmTL was 0.11-kilobases shorter per year in AUD compared to HC after adjustment for age, sex, race, and blood cell composition (p = 4.0 × 10-12). This association was partially attenuated but remained significant after additionally adjusting for BMI, and smoking status (0.06 kilobases shorter per year, p = 0.002). DNAmTL shortening was strongly associated with chronic heavy alcohol use (ps < 0.001), elevated gamma-glutamyl transferase (GGT), and aspartate aminotransferase (AST) (ps < 0.004). Comparison of DNAmTL with PCR-based methods of assessing TL revealed positive correlations (R = 0.3, p = 2.2 × 10-5), highlighting the accuracy of DNAmTL as a biomarker. The GWAS meta-analysis identified a single nucleotide polymorphism (SNP), rs4374022 and 18 imputed ones in Thymocyte Expressed, Positive Selection Associated 1(TESPA1), at the genome-wide level (p = 3.75 × 10-8). The allele C of rs4374022 was associated with DNAmTL shortening, lower hippocampus volume (p < 0.01), and decreased mRNA expression in hippocampus tissue (p = 0.04). Our study demonstrates DNAmTL-related aging acceleration in AUD and suggests a functional role for TESPA1 in regulating DNAmTL length, possibly via the immune system with subsequent biological effects on brain regions negatively affected by alcohol and implicated in aging.
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Affiliation(s)
- Jeesun Jung
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Daniel L McCartney
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Josephin Wagner
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Daniel B Rosoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Melanie Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Hui Sun
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Corinde E Wiers
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Luana Martins de Carvalho
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Nora D Volkow
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Rosie M Walker
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Archie Campbell
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - David J Porteous
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Andrew M McIntosh
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Riccardo E Marioni
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Steve Horvath
- Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA, USA
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Kathryn L Evans
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Falk W Lohoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA.
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45
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Impact of Host Telomere Length on HHV-6 Integration. Viruses 2022; 14:v14091864. [PMID: 36146670 PMCID: PMC9505050 DOI: 10.3390/v14091864] [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: 07/05/2022] [Revised: 08/15/2022] [Accepted: 08/21/2022] [Indexed: 12/04/2022] Open
Abstract
Human herpesvirus 6A and 6B are two closely related viruses that infect almost all humans. In contrast to most herpesviruses, HHV-6A/B can integrate their genomes into the telomeres during the infection process. Both viruses can also integrate in germ cells and subsequently be inherited in children. How HHV-6A/B integrate into host telomeres and the consequences of this remain a subject of active research. Here, we developed a method to measure telomere length by quantitative fluorescence in situ hybridization, confocal microscopy, and computational processing. This method was validated using a panel of HeLa cells having short or long telomeres. These cell lines were infected with HHV-6A, revealing that the virus could efficiently integrate into telomeres independent of their length. Furthermore, we assessed the telomere lengths after HHV-6A integration and found that the virus-containing telomeres display a variety of lengths, suggesting that either telomere length is restored after integration or telomeres are not shortened by integration. Our results highlight new aspects of HHV-6A/B biology and the role of telomere length on virus integration.
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46
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A systematic review and meta-analysis of the Everyday Discrimination Scale and biomarker outcomes. Psychoneuroendocrinology 2022; 142:105772. [PMID: 35490482 PMCID: PMC9997446 DOI: 10.1016/j.psyneuen.2022.105772] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/01/2022] [Accepted: 04/17/2022] [Indexed: 02/08/2023]
Abstract
Discrimination has consistently been associated with multiple adverse health outcomes. Like other psychosocial stressors, discrimination is thought to impact health through stress-related physiologic pathways including hypothalamic-pituitary-adrenal (HPA) axis activation, dysregulation of inflammation responses, and accelerated cellular aging. Given growing attention to research examining the biological pathways through which discrimination becomes embodied, this systematic review and meta-analysis synthesizes empirical evidence examining relationships between self-reported discrimination and four biomarker outcomes (i.e., cortisol, C-reactive protein (CRP), interleukin-6 (IL-6), and telomere length) among studies that have used the Everyday Discrimination Scale. We conducted a systematic review of studies discussing self-reported, everyday, or chronic discrimination in the context of health by searching Medline / PubMed (National Library of Medicine, NCBI), PsycInfo (APA, Ebsco) and Web of Science Core Collection (Clarivate). Twenty-five articles met the criteria for meta-analysis, with several reporting on multiple outcomes. Discrimination was associated with elevated CRP levels (r = 0.11; 95% CI: 0.01, 0.20, k = 10), though not cortisol (r = 0.05; 95% CI: -0.06, 0.16, k = 9), IL-6 (r = 0.05; 95% CI: -0.32, 0.42, k = 5), or telomere length (r = 0.03; 95% CI: -0.01, 0.07, k = 6). We identify several points of consideration for future research including addressing heterogeneity in assessment of biomarker outcomes and the need for longitudinal assessments of relationships between discrimination and biomarker outcomes.
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47
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Qi JY, Yang LK, Wang XS, Wang M, Li XB, Feng B, Wu YM, Liu SB, Zhang K. Mechanism of CNS regulation by irisin, a multifunctional protein. Brain Res Bull 2022; 188:11-20. [PMID: 35850187 DOI: 10.1016/j.brainresbull.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 07/10/2022] [Accepted: 07/13/2022] [Indexed: 11/30/2022]
Abstract
Exercise not only builds up our body but also improves cognitive function. Skeletal muscle secretes myokine during exercise as a large reservoir of signaling molecules, which can be considered as a medium between exercise and brain health. Irisin is a circulating myokine derived from the Fibronectin type III domain-containing protein 5 (FNDC5). Irisin regulates energy metabolism because it can stimulate the "Browning" of white adipose tissue. It has been reported that irisin can cross the blood-brain barrier and increase the expression of a brain-derived neurotrophic factor (BDNF) in the hippocampus, which improves learning and memory. In addition, the neuroprotective effect of irisin has been verified in various disease models. Therefore, this review summarizes how irisin plays a neuroprotective role, including its signal pathway and mechanism. In addition, we will briefly discuss the therapeutic potential of irisin for neurological diseases.
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Affiliation(s)
- Jing-Yu Qi
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Liu-Kun Yang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Xin-Shang Wang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Min Wang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Xu-Bo Li
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Ban Feng
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Yu-Mei Wu
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Shui-Bing Liu
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
| | - Kun Zhang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
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48
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Ren HL, Zheng YC, He GQ, Gao J, Guo X. A Rare Heterozygous TINF2 Deletional Frameshift Mutation in a Chinese Pedigree With a Spectrum of TBDs Phenotypes. Front Genet 2022; 13:913133. [PMID: 35873475 PMCID: PMC9300939 DOI: 10.3389/fgene.2022.913133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/15/2022] [Indexed: 11/13/2022] Open
Abstract
Telomere biology disorders (TBDs) induced by TINF2 mutations manifest clinically with a spectrum of phenotypes, from silent carriers to a set of overlapping conditions. A rare TINF2 frameshift mutation (c.591delG) encoding a truncated mutant TIN2 protein (p.W198fs) was identified in a 6-years-and-3-month-old Chinese girl with neuroblastoma (NB) by next generation sequencing and confirmed by Sanger sequencing. To explore the possible implications of TINF2 mutations in TBDs development, the TINF2 mutant was transfected into the human embryonic kidney (HEK) 293T cells, and mRNA expression of the shelterin complex components as well as the cellular distribution of mutant TIN2 were examined. The TINF2 mutation was phenotypically associated with short stature in the proband, nail dystrophy and spotted hypopigmentation in her mother, and psoriasis in her older brother. I-TASSER modeling analysis revealed conformational changes of the mutant TIN2 protein and loss of pivotal domains downstream of the 198th amino acid. Additionally, mRNA expression of the shelterin components was downregulated, and TIN2 mutant protein expression was reduced in HEK293T cells transfected with mutant TINF2. Furthermore, instead of being restricted to the nucleus, the mutant TIN2 was identified in both the cytoplasm and the nucleus. The TINF2 gene mutation might impair the function of the shelterin complex and the telomere maintenance mechanisms, both of which are involved in the development of TBDs. TBDs have been associated with increased cancer risk. To the best of our knowledge, this is the first report of NB in patients with TBDs. The relationship between the TINF2 mutation and NB may need to further study.
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Affiliation(s)
- Hai-Long Ren
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ying-Chun Zheng
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Guo-Qian He
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, China
| | - Ju Gao
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, China
- *Correspondence: Ju Gao, ; Xia Guo,
| | - Xia Guo
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, China
- *Correspondence: Ju Gao, ; Xia Guo,
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49
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Palmer RD. Aging clocks & mortality timers, methylation, glycomic, telomeric and more. A window to measuring biological age. Aging Med (Milton) 2022; 5:120-125. [PMID: 35783114 PMCID: PMC9245174 DOI: 10.1002/agm2.12197] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/19/2022] [Accepted: 01/23/2022] [Indexed: 11/11/2022] Open
Abstract
As humans age multiple forms of biological decay ensue, and many aspects of human biology can be measured to determine how far biological machinery has drifted from homeostasis. Research has led to aging clocks being developed that claim to predict biological age as opposed to chronological age. Aging could be regarded as a measured loss of homeostatic biological equilibrium that augments biological decay in fully developed tissues. Measuring aspects of how far various elements of biology have drifted from a youthful state may allow us to make determinations on a subject's health but also make informed predictions on their biological age. As we see across human physiology, many facets that maintain human health taper off such as nicotinamide adenine dinucleotide, glutathione, catalase, super oxide dismutase, and more. Extracellular vesicle density also tapers off during age combined with epigenetic drift, telomere attrition, and stem cell exhaustion, whilst genomic instability and biological insults from environment and lifestyle factors increase. Measuring these types of biomarkers with aging clocks may allow subjects to understand their own health more accurately and enable subjects to better focus on their efforts in the pursuit of longevity and, in addition, allow healthcare practitioners to deliver better health advice.
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Affiliation(s)
- Raymond D. Palmer
- Full Spectrum Biologics South Perth Western Australia Australia
- School of Aging Science of Aging South Perth Western Australia Australia
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Murkey JA, Watkins BX, Vieira D, Boden-Albala B. Disparities in allostatic load, telomere length and chronic stress burden among African American adults: A systematic review. Psychoneuroendocrinology 2022; 140:105730. [PMID: 35338946 DOI: 10.1016/j.psyneuen.2022.105730] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 02/04/2022] [Accepted: 03/14/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND The chronic disease burden among African Americans has continued to rise. Although racial disparities in chronic disease risk are well documented, the role of chronic stress in risk disparities among racial and ethnic minorities is not well understood. This systematic review of studies reporting on the relationship between chronic stress, education, and/or income, and biomarkers of chronic stress (allostatic load and telomere length) longitudinally among African Americans, seeks to contribute to this knowledge gap. OBJECTIVE To use the existing literature to both examine the strength of two objective biomarkers--telomere length and allostatic load--as measures of the overactivation of physiological stress processes in African American adults; and determine if existing studies used these two biomarkers to assess the relationship between chronic stress, income and level of educational attainment among African Americans longitudinally. METHODS In order to identify English-language articles published prior to October 11, 2021, a comprehensive search strategy was developed using five databases: PubMed/Medline, EMBASE, Web of Science Plus, Global Health (Ovid), and PsycINFO. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method was used to record progress on the comprehensive search for studies reporting on allostatic load and/or telomere length biomarkers longitudinally within all bodily fluids and chronic stress among African American adults. RESULTS In total, 7 studies met the search criteria; 902 were excluded. Thus, less than 1% of all studies reporting on biomarkers of chronic stress longitudinally included African Americans. Each of the 7 studies described the relationship between telomere length and/or allostatic load among African Americans and chronic stress, education, and/or income. Higher chronic stress levels and experiences of racial discrimination were associated with telomere shortening while lower income and higher chronic stress levels were associated with an increase in allostatic load among African Americans. DISCUSSION Given the limited number of studies reporting on the association between allostatic load, telomere length, and/or the relationship between both in assessing chronic stress severity longitudinally among African American populations, it is impossible to determine whether one biomarker has greater predictive value than the other. However, based on the literature included in this review, higher chronic stress levels and experiences of racial discrimination were associated with shorter telomere length, while lower income and higher chronic stress levels are associated with an increase in allostatic load among African Americans. CONCLUSION These data illustrate a gap in the literature on the relationship between the biomarkers of telomere length and allostatic load combined as a potential measure for chronic stress among African Americans. To our knowledge, none the current literature describes the relationship between telomere length and allostatic load longitudinally among African American adults. As the field strives to develop a "gold standard" for measuring chronic stress, the combination of these biomarkers needs to be the subject of scientific inquiry and thus, fully examined. Future longitudinal studies among African Americans are needed to better understand which biomarker, or combination of biomarkers will provide the most accurate measure of physiological stress processes.
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Affiliation(s)
- Jamie A Murkey
- New York University School of Global Public Health, Department of Epidemiology, 708 Broadway, New York, NY 10003, USA.
| | - Beverly-Xaviera Watkins
- New York University School of Global Public Health, Department of Epidemiology, 708 Broadway, New York, NY 10003, USA
| | - Dorice Vieira
- New York University Langone School of Medicine, Health Sciences Library, 550 First Avenue, New York, NY 10016, USA
| | - Bernadette Boden-Albala
- University of California Irvine Department of Population Health, 653 East Peltason Drive, Irvine, CA 92697, USA
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