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Abstract
Coronavirus Disease 2019 (COVID-19) is characterized with a wide range of clinical presentations from asymptomatic to severe disease. In patients with severe disease, the main causes of mortality have been acute respiratory distress syndrome, cytokine storm and thrombotic events. Although all factors that may be associated with disease severity are not yet clear, older age remains a leading risk factor. While age-related immune changes may be at the bottom of severe course of COVID-19, age-related hormonal changes have considerable importance due to their interactions with these immune alterations, and also with endothelial dysfunction and comorbid cardiometabolic disorders. This review aims to provide the current scientific evidence on the pathogenetic mechanisms underlying the pathway to severe COVID-19, from a collaborative perspective of age-related immune and hormonal changes together, in accordance with the clinical knowledge acquired thus far.
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Affiliation(s)
- Seda Hanife Oguz
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Hacettepe University School of Medicine, Ankara, Turkey
| | - Meltem Koca
- Division of Geriatrics, Department of Internal Medicine, Hacettepe University School of Medicine, Ankara, Turkey
| | - Bulent Okan Yildiz
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Hacettepe University School of Medicine, Ankara, Turkey.
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102
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Lim YS, Nguyen MT, Pham TX, Huynh TT, Park EM, Choi DH, Kang SM, Tark D, Hwang SB. Hepatitis C Virus Nonstructural 5A Protein Interacts with Telomere Length Regulation Protein: Implications for Telomere Shortening in Patients Infected with HCV. Mol Cells 2022; 45:148-157. [PMID: 34949741 PMCID: PMC8926864 DOI: 10.14348/molcells.2021.0167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/17/2021] [Accepted: 10/27/2021] [Indexed: 11/27/2022] Open
Abstract
Hepatitis C virus (HCV) is a major cause of chronic liver disease and is highly dependent on cellular proteins for viral propagation. Using protein microarray analysis, we identified 90 cellular proteins as HCV nonstructural 5A (NS5A) interacting partners, and selected telomere length regulation protein (TEN1) for further study. TEN1 forms a heterotrimeric complex with CTC and STN1, which is essential for telomere protection and maintenance. Telomere length decreases in patients with active HCV, chronic liver disease, and hepatocellular carcinoma. However, the molecular mechanism of telomere length shortening in HCV-associated disease is largely unknown. In the present study, protein interactions between NS5A and TEN1 were confirmed by immunoprecipitation assays. Silencing of TEN1 reduced both viral RNA and protein expression levels of HCV, while ectopic expression of the siRNA-resistant TEN1 recovered the viral protein level, suggesting that TEN1 was specifically required for HCV propagation. Importantly, we found that TEN1 is re-localized from the nucleus to the cytoplasm in HCV-infected cells. These data suggest that HCV exploits TEN1 to promote viral propagation and that telomere protection is compromised in HCV-infected cells. Overall, our findings provide mechanistic insight into the telomere shortening in HCV-infected cells.
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Affiliation(s)
- Yun-Sook Lim
- Laboratory of RNA Viral Diseases, Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
| | - Men T.N. Nguyen
- Ilsong Institute of Life Science, Hallym University, Seoul 07247, Korea
| | - Thuy X. Pham
- Laboratory of RNA Viral Diseases, Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
| | - Trang T.X. Huynh
- Laboratory of RNA Viral Diseases, Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
| | - Eun-Mee Park
- Center for Immunology and Pathology, National Institute of Health, Korea Center for Disease Control & Prevention, Cheongju 28159, Korea
| | - Dong Hwa Choi
- Biocenter, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Sang Min Kang
- Laboratory for Infectious Disease Prevention, Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
| | - Dongseob Tark
- Laboratory for Infectious Disease Prevention, Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
| | - Soon B. Hwang
- Laboratory of RNA Viral Diseases, Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
- Ilsong Institute of Life Science, Hallym University, Seoul 07247, Korea
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103
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Törn C, Liu X, Onengut-Gumuscu S, Counts KM, Moreno JL, Remedios CL, Chen WM, LeFaive J, Butterworth MD, Akolkar B, Krischer JP, Lernmark Å, Rewers M, She JX, Toppari J, Ziegler AG, Ratan A, Smith AV, Hagopian WA, Rich SS, Parikh HM. Telomere length is not a main factor for the development of islet autoimmunity and type 1 diabetes in the TEDDY study. Sci Rep 2022; 12:4516. [PMID: 35296692 PMCID: PMC8927592 DOI: 10.1038/s41598-022-08058-7] [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: 10/26/2021] [Accepted: 03/01/2022] [Indexed: 11/09/2022] Open
Abstract
The Environmental Determinants of Diabetes in the Young (TEDDY) study enrolled 8676 children, 3-4 months of age, born with HLA-susceptibility genotypes for islet autoimmunity (IA) and type 1 diabetes (T1D). Whole-genome sequencing (WGS) was performed in 1119 children in a nested case-control study design. Telomere length was estimated from WGS data using five tools: Computel, Telseq, Telomerecat, qMotif and Motif_counter. The estimated median telomere length was 5.10 kb (IQR 4.52-5.68 kb) using Computel. The age when the blood sample was drawn had a significant negative correlation with telomere length (P = 0.003). European children, particularly those from Finland (P = 0.041) and from Sweden (P = 0.001), had shorter telomeres than children from the U.S.A. Paternal age (P = 0.019) was positively associated with telomere length. First-degree relative status, presence of gestational diabetes in the mother, and maternal age did not have a significant impact on estimated telomere length. HLA-DR4/4 or HLA-DR4/X children had significantly longer telomeres compared to children with HLA-DR3/3 or HLA-DR3/9 haplogenotypes (P = 0.008). Estimated telomere length was not significantly different with respect to any IA (P = 0.377), IAA-first (P = 0.248), GADA-first (P = 0.248) or T1D (P = 0.861). These results suggest that telomere length has no major impact on the risk for IA, the first step to develop T1D. Nevertheless, telomere length was shorter in the T1D high prevalence populations, Finland and Sweden.
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Affiliation(s)
- Carina Törn
- Unit for Diabetes and Celiac Disease, Wallenberg/CRC, Department of Clinical Sciences, Lund University/CRC, Skåne University Hospital SUS, 21428, Malmö, Sweden.
| | - Xiang Liu
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA
| | - Suna Onengut-Gumuscu
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
| | - Kevin M Counts
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA
| | - Jose Leonardo Moreno
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA
| | - Cassandra L Remedios
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA
| | - Wei-Min Chen
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
| | - Jonathon LeFaive
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA
| | - Martha D Butterworth
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA
| | - Beena Akolkar
- National Institutes of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, USA
| | - Jeffrey P Krischer
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA
| | - Åke Lernmark
- Unit for Diabetes and Celiac Disease, Wallenberg/CRC, Department of Clinical Sciences, Lund University/CRC, Skåne University Hospital SUS, 21428, Malmö, Sweden
| | - Marian Rewers
- Barbara Davis Center for Childhood Diabetes, University of Colorado, Aurora, CO, USA
| | - Jin-Xiong She
- Center for Biotechnology and Genomic Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Jorma Toppari
- Department of Pediatrics, Turku University Hospital, Turku, Finland.,Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology and Centre for Population Health Research, University of Turku, Turku, Finland
| | - Anette-Gabriele Ziegler
- Institute of Diabetes Research, Helmholtz Zentrum München, Munich, Germany.,Forschergruppe Diabetes, Technical University of Munich, Klinikum Rechts der Isar, Munich, Germany.,Forschergruppe Diabetes e.V. at Helmholtz Zentrum München, Munich, Germany
| | - Aakrosh Ratan
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
| | - Albert V Smith
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA
| | | | - Stephen S Rich
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
| | - Hemang M Parikh
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, 3650 Spectrum Blvd #100, Tampa, FL, 33612, USA.
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104
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Raftopoulou C, Paltoglou G, Charmandari E. Association between Telomere Length and Pediatric Obesity: A Systematic Review. Nutrients 2022; 14:nu14061244. [PMID: 35334902 PMCID: PMC8949519 DOI: 10.3390/nu14061244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/08/2022] [Accepted: 03/10/2022] [Indexed: 12/10/2022] Open
Abstract
Objective: Telomere length (TL) is a robust marker of biological aging, and increased telomere attrition is noted in adults with obesity. The primary objective of this systematic review was to summarize current knowledge on the effects of childhood obesity in TL. The secondary objective was to assess the effect of weight management interventions in TL. Methods: The following databases were searched: PubMed, Scopus, Web of Science and Heal-link.gr from inception to September 2021. The search was performed using the following combinations of terms: “telomer*” [All Fields] AND (“length” [All Fields] OR “lengths” [All Fields]) AND “obes*” [All Fields] AND (“child*” [All Fields] OR “adolescen*” [All Fields]). Results: A total of 16 original articles were included in this systematic review. Eleven of them were cross-sectional and five were lifestyle interventions. Conclusions: There was a tendency towards a negative association between childhood obesity and TL. Life-style interventions in children have been associated with increased TL peripherally, indicating a possible association of the redistribution of younger cells in the periphery with the favorable effect of these interventions. Further prospective studies with larger sample sizes that employ other markers of cell aging would potentially elucidate this important mechanistic relation.
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Affiliation(s)
- Christina Raftopoulou
- Division of Endocrinology and Metabolism, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, 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, 11527 Athens, Greece;
| | - Evangelia Charmandari
- Division of Endocrinology and Metabolism, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece;
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, Aghia Sophia Children’s Hospital, 11527 Athens, Greece;
- Correspondence: ; Tel./Fax: +30-213-2013-384
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105
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Zhang X, Shi M, Zhao X, Bin E, Hu Y, Tang N, Dai H, Wang C. Telomere shortening impairs alveolar regeneration. Cell Prolif 2022; 55:e13211. [PMID: 35274784 PMCID: PMC9055893 DOI: 10.1111/cpr.13211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 12/31/2021] [Accepted: 01/18/2022] [Indexed: 12/28/2022] Open
Abstract
Objectives Short telomeres in alveolar type 2 (AT2) cells have been associated with many lung diseases. The study aimed to investigate the regeneration capacity of AT2 cells with short telomeres by knocking out Tert in mice (G4 Tert−/−) from the whole to the cellular level. Materials and Methods The lung injury model of mice was established by left pneumonectomy (PNX). The proliferation and differentiation of AT2 cells were observed by immunofluorescence staining in vivo and in vitro. The difference of the gene expression between control and G4 Tert−/− group during the regeneration of AT2 cells was compared by RNA sequencing. The expression of tubulin polymerization promoting protein 3 (TPPP3) was reduced by adeno‐associated virus delivery. Results The alveolar regeneration in G4 Tert−/− mice was impaired after PNX‐induced lung injury. The regulation of cytoskeleton remodelling was defective in G4 Tert−/− AT2 cells. The expression of TPPP3 was gradually increased during AT2 cell differentiation. The expression level of TPPP3 was reduced in G4 Tert−/− AT2 cells. Reducing TPPP3 expression in AT2 cells limits the microtubule remodelling and differentiation of AT2 cells. Conclusion Short telomeres in AT2 cells result in the reduced expression level of TPPP3, leading to impaired regeneration capacity of AT2 cells.
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Affiliation(s)
- Xin Zhang
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital Affiliated to Capital Medical University, Beijing, China.,Department of Pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Diseases, Beijing, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Mengting Shi
- National Institute of Biological Sciences, Beijing, China
| | - Xi Zhao
- National Institute of Biological Sciences, Beijing, China
| | - Ennan Bin
- National Institute of Biological Sciences, Beijing, China
| | - Yucheng Hu
- Beijing Advanced Innovation Center for Imaging Theory and Technology & Academy for Multidisciplinary Studies, Capital Normal University, Beijing, China
| | - Nan Tang
- National Institute of Biological Sciences, Beijing, China
| | - Huaping Dai
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital Affiliated to Capital Medical University, Beijing, China.,Department of Pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Diseases, Beijing, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Chen Wang
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital Affiliated to Capital Medical University, Beijing, China.,Department of Pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Diseases, Beijing, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
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106
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Role of senescence in the chronic health consequences of COVID-19. Transl Res 2022; 241:96-108. [PMID: 34695606 PMCID: PMC8532377 DOI: 10.1016/j.trsl.2021.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/28/2021] [Accepted: 10/19/2021] [Indexed: 02/07/2023]
Abstract
While the full impact of COVID-19 is not yet clear, early studies have indicated that upwards of 10% of patients experience COVID-19 symptoms longer than 3 weeks, known as Long-Hauler's Syndrome or PACS (postacute sequelae of SARS-CoV-2 infection). There is little known about risk factors or predictors of susceptibility for Long-Hauler's Syndrome, but older adults are at greater risk for severe outcomes and mortality from COVID-19. The pillars of aging (including cellular senescence, telomere dysfunction, impaired proteostasis, mitochondrial dysfunction, deregulated nutrient sensing, genomic instability, progenitor cell exhaustion, altered intercellular communication, and epigenetic alterations) that contribute to age-related dysfunction and chronic diseases (the "Geroscience Hypothesis") may interfere with defenses against viral infection and consequences of these infections. Heightening of the low-grade inflammation that is associated with aging may generate an exaggerated response to an acute COVID-19 infection. Innate immune system dysfunction that leads to decreased senescent cell removal and/or increased senescent cell formation could contribute to accumulation of senescent cells with both aging and viral infections. These processes may contribute to increased risk for long-term COVID-19 sequelae in older or chronically ill patients. Hence, senolytics and other geroscience interventions that may prolong healthspan and alleviate chronic diseases and multimorbidity linked to fundamental aging processes might be an option for delaying, preventing, or alleviating Long-Hauler's Syndrome.
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Key Words
- ampk, amp-activated protein kinase
- covid-19, coronavirus disease 2019
- covid-fis, a phase 2 placebo-controlled pilot study in covid-19 of fisetin to alleviate dysfunction and excessive inflammatory response in older adults in nursing homes
- cr, caloric restriction
- fga, facility for geroscience analysis
- icu, intensive care unit
- if, intermittent fasting
- ltcf, long-term care facility
- mcc, multiple chronic conditions
- mers-cov, middle east respiratory syndrome coronavirus
- mtor, mammalian target of rapamycin
- nad+, nicotinamide adenine dinucleotide
- nmn, nicotinamide mononucleotide
- nr, nicotinamide riboside
- pacs, postacute sequalae of sars-cov-2 infection
- pamps, pathogen-associated molecular profile factors
- ros, reactive oxygen species
- sars, severe acute respiratory syndrome
- sars-cov-1, severe acute respiratory syndrome coronavirus 1
- sars-cov-2, severe acute respiratory syndrome coronavirus 2
- sasp, senescence-associated secretory phenotype
- snf, skilled nursing facility
- tgn, translational geroscience network
- who, world health organization
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107
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Differences between multimodal brain-age and chronological-age are linked to telomere shortening. Neurobiol Aging 2022; 115:60-69. [DOI: 10.1016/j.neurobiolaging.2022.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 03/16/2022] [Accepted: 03/23/2022] [Indexed: 11/19/2022]
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108
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Михеев РК, Григорян ОР, Панкратова МС, Андреева ЕН, Шереметьева ЕВ, Абсатарова ЮС, Мокрышева НГ. [Telomere pathology in ontogenesis in patients with Turner syndrome]. PROBLEMY ENDOKRINOLOGII 2022; 68:128-132. [PMID: 35488763 PMCID: PMC9112980 DOI: 10.14341/probl12869] [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: 01/21/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
According to present medical databases there many trials to provide in vivo researches in vivo to confirm/refute shortening process of telomeres among patients with Turner syndrome. Despite the successful clinical experience of providing such patients with Turner syndrome, a lot of omics (proteomic and metabolomic) aspects still stay unclear. Main disadvantages of most researches are small volume and minimized mathematical correlation with chronic disease (coronary heart disease, essential hypertension, cardiovascular malformations). Finally, organization of international prospective multi-centered researches in vivo including patients with mosaic cariotype and co-operation between physicians and biologists are optimal solutions for this present problem.
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Affiliation(s)
- Р. К. Михеев
- Национальный медицинский исследовательский центр эндокринологии
| | - О. Р. Григорян
- Национальный медицинский исследовательский центр эндокринологии
| | | | - Е. Н. Андреева
- Национальный медицинский исследовательский центр эндокринологии;
Московский государственный медико-стоматологический университет имени А.И. Евдокимова
| | | | | | - Н. Г. Мокрышева
- Национальный медицинский исследовательский центр эндокринологии
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109
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The Psychoemotional Stress-Induced Changes in the Abundance of SatIII (1q12) and Telomere Repeats, but Not Ribosomal DNA, in Human Leukocytes. Genes (Basel) 2022; 13:genes13020343. [PMID: 35205387 PMCID: PMC8872136 DOI: 10.3390/genes13020343] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/01/2022] [Accepted: 02/11/2022] [Indexed: 02/04/2023] Open
Abstract
INTRODUCTION. As shown earlier, copy number variations (CNV) in the human satellite III (1q12) fragment (f-SatIII) and the telomere repeat (TR) reflects the cell’s response to oxidative stress. The contents of f-SatIII and TR in schizophrenic (SZ) patients were found to be lower than in healthy controls (HC) in previous studies. The major question of this study was: ‘What are the f-SatIII and TR CNV dynamic changes in human leukocytes, depending on psychoemotional stress?’ MATERIALS AND METHODS. We chose a model of psychoemotional stress experienced by second-year medical students during their exams. Blood samples were taken in stressful conditions (exams) and in a control non-stressful period. Biotinylated probes were used for f-SatIII, rDNA, and TR quantitation in leukocyte DNA by non-radioactive quantitative hybridization in SZ patients (n = 97), HC (n = 97), and medical students (n = 17, n = 42). A flow cytometry analysis was used for the oxidative stress marker (NOX4, 8-oxodG, and γH2AX) detection in the lymphocytes of the three groups. RESULTS. Oxidative stress markers increased significantly in the students’ lymphocytes during psychoemotional stress. The TR and f-SatIII, but not the rDNA, contents significantly changed in the DNA isolated from human blood leukocytes. After a restoration period (post-examinational vacations), the f-SatIII content decreased, and the TR content increased. Changes in the blood cells of students during examinational stress were similar to those in SZ patients during an exacerbation of the disease. CONCLUSIONS. Psychoemotional stress in students during exams triggers a universal mechanism of oxidative stress. The oxidative stress causes significant changes in the f-SatIII and TR contents, while the ribosomal repeat content remains stable. A hypothesis is proposed to explain the quantitative polymorphisms of f-SatIII and TR contents under transient (e.g., students’ exams) or chronic (in SZ patients) stress. The changes in the f-SatIII and TR copy numbers are non-specific events, irrespective of the source of stress. Thus, our findings suggest that the psychoemotional stress, common in SZ patients and healthy students during exams, but not in a schizophrenia-specific event, was responsible for the changes in the repeat contents that we observed earlier in SZ patients.
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110
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Wang D, Zhao H, Shen Y, Chen Q. A Variety of Nucleic Acid Species Are Sensed by cGAS, Implications for Its Diverse Functions. Front Immunol 2022; 13:826880. [PMID: 35185917 PMCID: PMC8854490 DOI: 10.3389/fimmu.2022.826880] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/20/2022] [Indexed: 12/20/2022] Open
Abstract
Cyclic GMP-AMP synthase (cGAS) recognizes double-stranded DNA (dsDNA) derived from invading pathogens and induces an interferon response via activation of the key downstream adaptor protein stimulator of interferon genes (STING). This is the most classic biological function of the cGAS-STING signaling pathway and is critical for preventing pathogenic microorganism invasion. In addition, cGAS can interact with various types of nucleic acids, including cDNA, DNA : RNA hybrids, and circular RNA, to contribute to a diverse set of biological functions. An increasing number of studies have revealed an important relationship between the cGAS-STING signaling pathway and autophagy, cellular senescence, antitumor immunity, inflammation, and autoimmune diseases. This review details the mechanism of action of cGAS as it interacts with different types of nucleic acids, its rich biological functions, and the potential for targeting this pathway to treat various diseases.
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Affiliation(s)
| | | | | | - Qi Chen
- *Correspondence: Yangkun Shen, ; Qi Chen,
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111
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Ren CY, Liu PP, Li J, Li YQ, Zhang LJ, Chen GH, Dong FY, Hu D, Zhang M. Changes in telomere length and serum neurofilament light chain levels in female patients with chronic insomnia disorder. J Clin Sleep Med 2022; 18:383-392. [PMID: 34319229 PMCID: PMC8805003 DOI: 10.5664/jcsm.9574] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
STUDY OBJECTIVES The aims of this study were to explore changes in the telomere length (relative telomere repeat copy/single-copy gene [T/S ratio]) and serum neurofilament light chain (sNfL) levels in female patients with chronic insomnia disorder (CID), examine their relationships with emotional abnormalities and cognitive impairment, and determine whether these 2 indicators were independently associated with sleep quality. METHODS The CID group contained 80 patients diagnosed with CID, and 51 individuals constituted a healthy control group. Participants completed sleep, emotion, and cognition assessments. Telomere length was detected through quantitative real-time polymerase chain reaction. Enzyme-linked immunosorbent assay was used to determine sNfL concentrations. RESULTS Relative to the healthy control group, the CID group had elevated Pittsburgh Sleep Quality Index, Hamilton Anxiety Scale-14, and Hamilton Depression Rating Scale-17 scores and reduced Montreal Cognitive Assessment scale scores, a decreased T/S ratio, and an increased sNfL concentration. Subgroup analysis according to various CID-associated sleep factors showed that poor sleep performance corresponded to a lower T/S ratio. Higher anxiety levels and more cognitive dysfunction correlated with shorter telomere lengths. The T/S ratio negatively correlated with age, whereas the sNfL concentration positively correlated with age in the CID group. The Pittsburgh Sleep Quality Index score negatively correlated with the T/S ratio but did not correlate with sNfL levels. Multiple linear regression analysis showed that the T/S ratio had a negative and independent effect on Pittsburgh Sleep Quality Index scores. CONCLUSIONS The CID group had shorter telomeres and higher sNfL concentrations, and reduced telomere length independently affected sleep quality. CITATION Ren C-Y, Liu P-P, Li J, et al. Changes in telomere length and serum neurofilament light chain levels in female patients with chronic insomnia disorder. J Clin Sleep Med. 2022;18(2):383-392.
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Affiliation(s)
- Chong-Yang Ren
- Department of General Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, P. R. China
| | - Pei-Pei Liu
- Department of Neurology, Fu Yang Fifth People’s Hospital, Fuyang, P.R. China
| | - Jing Li
- Department of Neurology, The First Affiliated Hospital of Anhui University of Science and Technology (The First People’s Hospital of Huainan City), Huainan, P.R. China
| | - Ya-Qiang Li
- Department of Neurology, The First Affiliated Hospital of Anhui University of Science and Technology (The First People’s Hospital of Huainan City), Huainan, P.R. China
| | - Li-jun Zhang
- School of Medicine, Anhui University of Science and Technology, Huainan, P.R. China,Key Laboratory of Industrial Dust Prevention and Control and Occupational Safety and Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, P.R. China
| | - Gui-Hai Chen
- Department of Neurology (Sleep Disorder), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, Chaohu, P.R. China
| | - Fang-yi Dong
- Department of Hematology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China;,Address correspondence to: Mei Zhang, MD; ; Dong Hu, PhD; ; and Fang-yi Dong, PhD;
| | - Dong Hu
- School of Medicine, Anhui University of Science and Technology, Huainan, P.R. China,Key Laboratory of Industrial Dust Prevention and Control and Occupational Safety and Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, P.R. China,Address correspondence to: Mei Zhang, MD; ; Dong Hu, PhD; ; and Fang-yi Dong, PhD;
| | - Mei Zhang
- Department of Neurology, The First Affiliated Hospital of Anhui University of Science and Technology (The First People’s Hospital of Huainan City), Huainan, P.R. China,School of Medicine, Anhui University of Science and Technology, Huainan, P.R. China,Key Laboratory of Industrial Dust Prevention and Control and Occupational Safety and Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, P.R. China,Address correspondence to: Mei Zhang, MD; ; Dong Hu, PhD; ; and Fang-yi Dong, PhD;
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Guo L, Chen Y, Li H, Yin F, Ge M, Hu L, Zi M, Qin Z, He Y. Telomere length is maternally inherited and associated with lipid metabolism in Chinese population. Aging (Albany NY) 2022; 14:354-367. [PMID: 34995210 PMCID: PMC8791204 DOI: 10.18632/aging.203810] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/25/2021] [Indexed: 11/25/2022]
Abstract
Telomere is a unique DNA-protein complex which covers the ends of chromosomes to avoid end fusion and maintain the stability and integrity of chromosomes. Telomere length (TL) shortening has been linked to aging and various age-related diseases in humans. Here we recruited a total of 1031 Chinese individuals aged between 12 and 111 years, including 108 families with parents and their offspring. DNA was extracted from peripheral white blood cells and TL was measured by quantitative PCR (qPCR). We explored the associations of TL with age, gender and clinical variables, and tested the parental effects on TL variation. First, we found that TL was shortened with age, however, TL was better maintained in females than males. Second, there was a robust association of TL between mother and offspring, but not between father and their offspring. In addition, TL was inversely associated with visceral fat index in females, and positively associated with apolipoprotein A levels. Knockdown of the key genes for lipid metabolism (PNPLA2 and CPT1) shortened the TL in HepG2 cells. These findings indicate that TL is maternally inherited, and impairment of lipid metabolism may contribute to the TL shortening in the Chinese population.
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Affiliation(s)
- Liyun Guo
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Yajuan Chen
- School of Rehabilitation, Kunming Medical University, Kunming 650500, China
| | - Huiqin Li
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Fanqian Yin
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingxia Ge
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Hu
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
- College of Basic Medicine and Life Sciences, Hainan Medical University, Haikou 571199, China
| | - Meiting Zi
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Zhenghong Qin
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases and Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Yonghan He
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
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Pauleck S, Gigic B, Cawthon RM, Ose J, Peoples AR, Warby CA, Sinnott JA, Lin T, Boehm J, Schrotz-King P, Li CI, Shibata D, Siegel EM, Figueiredo JC, Toriola AT, Schneider M, Ulrich AB, Hoffmeister A, Ulrich CM, Hardikar S. Association of circulating leukocyte telomere length with survival in patients with colorectal cancer. J Geriatr Oncol 2022; 13:480-485. [PMID: 34998722 PMCID: PMC9197691 DOI: 10.1016/j.jgo.2021.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/31/2021] [Accepted: 12/07/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Telomere shortening, as seen with aging, can cause chromosomal instability and promote cancer progression. We investigated the association between circulating telomere length and overall and disease-free survival in a sub-cohort of patients with colorectal cancer. METHODS Baseline genomic DNA from blood leukocytes was extracted from N = 92 newly diagnosed stage I-IV patients with colorectal cancer enrolled at the ColoCare Study site in Heidelberg, Germany. Detailed information on clinicodemographic (including age) and lifestyle risk factors, and clinical outcomes (including recurrence and survival) was collected. Telomere length was measured in DNA using multiplex quantitative polymerase chain reaction. Kaplan Meier survival curves were generated comparing shorter to longer telomere lengths with log-rank testing. RESULTS The mean T/S ratio for study patients was 0.5 (range: 0.3-0.9). Shorter telomeres were associated with older age at baseline. Patients with shorter telomeres experienced a worse overall and disease-free survival, although this association did not reach statistical significance. Kaplan-Meier survival curves for those with circulating telomere length below vs. above the median showed poorer overall (log-rank p = 0.31) and disease-free survival (long-rank p = 0.23). CONCLUSIONS Our results suggest that individuals with shorter telomeres, as seen with aging, may experience a worse overall and disease-free survival after colorectal cancer diagnosis. Larger sample sizes with longer follow-up are needed to further evaluate telomere length as a prognostic biomarker in colorectal cancer progression.
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Affiliation(s)
- Svenja Pauleck
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; University of Leipzig Medical Center, Medical Faculty, Leipzig, Germany
| | - Biljana Gigic
- Heidelberg University Hospital, Heidelberg, Germany; National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Richard M Cawthon
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Jennifer Ose
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - Anita R Peoples
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - Christy A Warby
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - Jennifer A Sinnott
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA; Department of Pediatrics, University of Utah, Salt Lake City, UT, USA; Department of Statistics, The Ohio State University, Columbus, OH, USA
| | - Tengda Lin
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - Juergen Boehm
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Petra Schrotz-King
- National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - David Shibata
- University of Tennessee Health Science Center, Memphis, TN, USA
| | - Erin M Siegel
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | | | - Adetunji T Toriola
- Department of Surgery, Division of Public Health Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Martin Schneider
- Heidelberg University Hospital, Heidelberg, Germany; National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Alexis B Ulrich
- Heidelberg University Hospital, Heidelberg, Germany; National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Albrecht Hoffmeister
- Medical Department II, Division of Gastroenterology, University of Leipzig Medical Center, Leipzig, Germany
| | - Cornelia M Ulrich
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - Sheetal Hardikar
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA; Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
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Costanian C, Farah R, Salameh R, Meisner BA, Aoun Bahous S, Sibai AM. The Influence of Female Reproductive Factors on Longevity: A Systematized Narrative Review of Epidemiological Studies. Gerontol Geriatr Med 2022; 8:23337214221138663. [DOI: 10.1177/23337214221138663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/22/2022] [Accepted: 10/27/2022] [Indexed: 11/19/2022] Open
Abstract
Purpose: This systematized review presents a synthesis of epidemiological studies that examine the association between female reproductive factors and longevity indicators. Methods: A comprehensive literature search was conducted using four bibliographic databases: OVID Medline, Web of Science, PubMed, and Google Scholar, including English language articles published until March 2022. Results from the search strategy yielded 306 articles, 37 of which were included for review based on eligibility criteria. Results were identified within the following nine themes: endogenous androgens and estrogens, age at first childbirth, age at last childbirth, parity, reproductive lifespan, menopause-related factors, hormone therapy use, age at menarche, and offspring gender. Results: Evidence that links reproductive factors and long lifespan is limited. Several female reproductive factors are shown to be significantly associated with longevity, yet findings remain inconclusive. The most consistent association was between parity (fertility and fecundity) and increased female lifespan. Age at first birth and parity were consistently associated with increased longevity. Associations between age at menarche and menopause, premature menopause, reproductive lifespan, offspring gender and longevity are inconclusive. Conclusion: There is not enough evidence to consider sex a longevity predictor. To understand the mechanisms that predict longevity outcomes, it is imperative to consider sex-specific within-population differences.
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Affiliation(s)
| | | | | | | | | | - Abla M. Sibai
- Faculty of Health Sciences, American University of Beirut, Beirut, Lebanon
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Lv Z, Cui J, Zhang J. Associations between serum urate and telomere length and inflammation markers: Evidence from UK Biobank cohort. Front Immunol 2022; 13:1065739. [PMID: 36591268 PMCID: PMC9797991 DOI: 10.3389/fimmu.2022.1065739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
Objective Hyperuricemia and gout have become gradually more common. The effect of serum urate on organism aging and systematic inflammation is not determined. This study aims to evaluate whether serum urate is causally associated with cellular aging markers and serum inflammation markers. Methods A Mendelian randomization study was performed on summary-level data from the largest published genome-wide association studies. Single nucleotide polymorphisms with a genome-wide significance level were selected as instrumental variables for leukocyte telomere length (LTL), and serum soluble makers of inflammation (CRP, IL-6, TNF-α, and IGF-1). Standard inverse variance weighted (IVW) method was used as the primary statistical method. The weighted median, MR-Egger regression, and MR-PRESSO methods were used for sensitivity analysis. Results An inverse causal association of genetically predicted serum urate levels and LTL was found using IVW method (OR: 0.96, 95%CI 0.95, 0.97; β=-0.040; SE=0.0072; P=4.37×10-8). The association was also supported by MR results using MR-Egger method and weighted median method. The MR-PRESSO analysis and leave-one-out sensitivity analysis supported the robustness of the combined results. In terms of other aging-related serum biomarkers, there was no evidence supporting a causal effect of serum urate on CRP, IL-6, TNF-α, or IGF-1 levels. Conclusions Serum urate levels are negatively associated with telomere length but are not associated with serum soluble indicators of inflammation. Telomere length may be a critical marker that reflects urate-related organismal aging and may be a mechanism in the age-related pathologies and mortality caused by hyperuricemia.
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Affiliation(s)
- Zhengtao Lv
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiarui Cui
- School of Rehabilitation and Health Preservation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Jiarui Cui, ; Jiaming Zhang,
| | - Jiaming Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Jiarui Cui, ; Jiaming Zhang,
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116
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Lan B, Bai Y, Chang X, Zhang X. Independent and joint effect of relative telomere length and type 2 diabetes on all-cause mortality in American adults. Front Endocrinol (Lausanne) 2022; 13:1035017. [PMID: 36440190 PMCID: PMC9685657 DOI: 10.3389/fendo.2022.1035017] [Citation(s) in RCA: 2] [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: 09/02/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE The joint effect of leukocyte telomere length (LTL) and type 2 diabetes (T2D) on the risk of all-cause death has been sparsely explored. The study designed to examine the joint effect of T2D and LTL on the probability of death in American adults. METHODS A cohort of 6862 adults with LTL measurements and with or without T2D from the NHANES 1999-2002 with follow-up information until 2015 was studied. Quantitative PCR was used to measure the length of telomeres relative to standard reference DNA (T/S ratio). Individuals were grouped into three tertiles according to the LTL levels, with the first tertile demonstrating the lowest one and used as the reference group. The effects of LTL and T2D status on death were evaluated using Kaplan-Meier curves along with log-rank test. Three Cox proportional hazards models with adjustment for various confounders were used to examine the links between TL and all-cause death possibility using adjusted hazard ratios (HRs). RESULTS Adults in the sample averaged 45.54 years of age, with 49.51% being male. After a median follow-up period of 14.4 years, 1543 (22.5%) individuals died from all cause. The probability of all-cause mortality was higher among individuals with LTL in the highest tertile than individuals in the lowest tertile (aHR = 0.89; 95%CI: 0.77-1.03); however, the difference did not reach the level of statistical significance (P = 0.11). Conversely, the individuals with T2D had a higher probability of death than individuals without (aHR = 1.26; 95%CI: 1.06-1.50; P = 0.0092). When LTL and T2D status were investigated jointly, subjects in the highest TLT tertile and with T2D had the highest probability of mortality compared with their counterparts (aHR = 1.34; 95%CI: 1.07-1.68; P = 0.0101). However, there was no independent effect of low TLT on mortality as demonstrated among individuals with diabetes (aHR = 1.14; 95%CI: 0.95-1.38; P = 0.1662). CONCLUSION The joint effect of TLT and T2D was larger than the sum of the independent effects on the risk of all-cause death. Participants with high TLT and diabetes showed the highest possibility of death compared with other groups.
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Affiliation(s)
- Beidi Lan
- Department of Structural Heart Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yuan Bai
- Department of Cardiology, Changhai Hospital of The Navy Military Medical University, Shanghai, China
| | - Xiaoyi Chang
- Department of State-Owned Assets Management, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaoxia Zhang
- Department of Pharmacy, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Yuan Y, Tan Y, Qiu X, Luo H, Li Y, Li R, Yang X. Sperm telomere length as a novel biomarker of male infertility and embryonic development: A systematic review and meta-analysis. Front Endocrinol (Lausanne) 2022; 13:1079966. [PMID: 36714598 PMCID: PMC9875015 DOI: 10.3389/fendo.2022.1079966] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/23/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Telomeres have an essential role in maintaining the integrity and stability of the human chromosomal genome and preserving essential DNA biological functions. Several articles have been published on the association of STL with male semen parameters and clinical pregnancy. The results, however, are either inconclusive or inconsistent. Therefore, this meta-analysis aimed to systematically assess the accuracy and clinical value of sperm telomere length (STL) as a new marker for diagnosing male infertility and predicting the quality of embryonic development. METHODS We performed a comprehensive systematic search for relevant publications in PubMed, the Cochrane Library, Web of Science, Embase, Scopus, and Ovid, from database build to August 2022. All experimental studies exploring the association of STL with male semen quality, male infertility, or embryonic development were included. RESULTS Overall, Twelve prospective observational cohort studies (1700 patients) were eligible for inclusion in the meta-analysis. The meta-analysis showed a positive linear correlation between STL and semen parameters. The optimal cut-off value for STL diagnosing male infertility was 1.0, with a sensitivity and specificity of 80%. Regarding STL and embryonic development, the clinical pregnancy rate was associated with longer STL, and there was no significant difference between the two groups regarding fertilization rate. CONCLUSION Our study showed that STL has good diagnostic and predictive value for male fertility and clinical pregnancy and could be used as a new biomarker for diagnosing male infertility and predicting embryonic development. SYSTEMATIC REVIEW REGISTRATION https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022303333.
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Affiliation(s)
- Yacheng Yuan
- The First Clinical Medical College of Gansu University of Chinese Medicine, Lanzhou, China
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
| | - Yangyang Tan
- The First Clinical Medical College of Gansu University of Chinese Medicine, Lanzhou, China
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
| | - Xiaolong Qiu
- The First Clinical Medical College of Gansu University of Chinese Medicine, Lanzhou, China
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
| | - Hengfeng Luo
- The First Clinical Medical College of Gansu University of Chinese Medicine, Lanzhou, China
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
| | - Yuxiang Li
- The First Clinical Medical College of Gansu University of Chinese Medicine, Lanzhou, China
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
| | - Ruijie Li
- The First Clinical Medical College of Gansu University of Chinese Medicine, Lanzhou, China
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
| | - Xukai Yang
- Department of Urology, The 940 Hospital of Joint Logistics Support Force of Chinese PLA, Lanzhou, China
- *Correspondence: Xukai Yang,
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Wang L, Yin H, Huang S, Huang S, Huang C, Zhang Z, Liu H. Bortezomib induces cellular senescence in A549 lung cancer cells by stimulating telomere shortening. Hum Exp Toxicol 2022; 41:9603271221124094. [DOI: 10.1177/09603271221124094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bortezomib (BTZ) is a first-generation proteasome inhibitor with anti-tumor properties for multiple myeloma and mantle cell lymphoma. Increasing evidence has shown that BTZ exhibits toxic effects on diverse tumor cells, including non-small cell lung cancer (NSCLC) cells. However, the mechanism has not been fully evaluated. Here, we examined the regulatory effect of BTZ on cellular senescence, a potent tumor suppressive mechanism, in NSCLC cell lines. SA-β-gal staining assay showed that BTZ caused a significant increase in β-Gal positive A549 cells. BTZ also induced cell cycle arrest on G0/G1 phase in A549 cells. Furthermore, telomerase activity was markedly reduced in A549 cells treated with BTZ. BTZ reduced the expression levels of hTERT, and the key proteins binding to telomeric DNA, including POT1 and TIN2. It also induced the expressions of the cell cycle-associated tumor suppressors p53 and p21 in A549 cells. Moreover, hTERT overexpression abolished the effects of BTZ on A549 cells. These results show that BTZ induced cellular senescence by stimulating telomere shortening. Our results provide experimental data for the potential clinical application of BTZ in NSCLC treatment.
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Affiliation(s)
- Lei Wang
- Department of Pulmonary and Critical Care Medicine, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
| | - Hang Yin
- Department of Cancer Day Clinic, Hainan Hospital of PLA General Hospital, Sanya, China
| | - Shiren Huang
- Department of Pulmonary and Critical Care Medicine, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
| | - Sini Huang
- Department of Pulmonary and Critical Care Medicine, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
| | - Congcong Huang
- Department of Thoracic Oncology, Hainan Cancer Hospital, Haikou, China
| | - Zhao Zhang
- Department of Medical Oncology, Hainan Cancer Hospital, Haikou, China
| | - Hui Liu
- Department of Cancer Day Clinic, Hainan Hospital of PLA General Hospital, Sanya, China
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Effect of Physical Activity, Smoking, and Sleep on Telomere Length: A Systematic Review of Observational and Intervention Studies. J Clin Med 2021; 11:jcm11010076. [PMID: 35011817 PMCID: PMC8745211 DOI: 10.3390/jcm11010076] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/14/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022] Open
Abstract
Aging is a risk factor for several pathologies, restricting one’s health span, and promoting chronic diseases (e.g., cardiovascular and neurodegenerative diseases), as well as cancer. Telomeres are regions of repetitive DNA located at chromosomal ends. Telomere length has been inversely associated with chronological age and has been considered, for a long time, a good biomarker of aging. Several lifestyle factors have been linked with telomere shortening or maintenance. However, the consistency of results is hampered by some methodological issues, including study design, sample size, measurement approaches, and population characteristics, among others. Therefore, we aimed to systematically review the current literature on the effects of three relevant lifestyle factors on telomere length in human adults: physical activity, smoking, and sleep. We conducted a qualitative systematic review of observational and intervention studies using the Preferred Reporting Item for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. The systematic literature search covered articles published in MEDLINE and EMBASE databases (from 2010 to 2020). A total of 1400 studies were identified; 83 were included after quality control. Although fewer sedentary activities, optimal sleep habits, and non- or ex-smoker status have been associated with less telomere shortening, several methodological issues were detected, including the need for more targeted interventions and standardized protocols to better understand how physical activity and sleep can impact telomere length and aging. We discuss the main findings and current limitations to gain more insights into the influence of these lifestyle factors on the healthy aging process.
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Al-Thuwaini TM. Association of antidiabetic therapy with shortened telomere length in middle-aged Type 2 diabetic patients. J Diabetes Metab Disord 2021; 20:1161-1168. [PMID: 34900769 DOI: 10.1007/s40200-021-00835-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/13/2021] [Indexed: 11/26/2022]
Abstract
Introduction A wide range of antidiabetic therapies have been developed to manage diabetes and limit its lifespan but each of them have adverse long-term drug reactions. This study was performed for the investigation of the possible association of antidiabetic therapy with shortened telomere length in middle-aged Type 2 diabetic patients. Materials and methods The subjects in this case-control study included 100 non-diabetic patients and 300 patients with Type 2 diabetes with ages in the range of 30-50 years. The treated patients were further subdivided into diabetic patients using Doanil, those using insulin and those using both the therapies. The mean telomere length was determined using the southern-blotting technique. A logistic regression analysis was performed to predict the relationship between antidiabetic therapy and shortened telomere length. Results The results revealed a significant increase (P < 0.01) in the fasting blood glucose and lipid profile in non-treatment diabetic patients compared to diabetic patients with treatment, and also in diabetic patients with insulin therapy, compared to diabetic patients with Doanil or both therapies. The results showed that non-treatment diabetic patients had shorter telomere length, compared to the diabetic patients with treatment, and patients treated with insulin therapy had shorter telomere length, compared to the diabetic patients with Doanil or both therapies. The logistic regression analysis confirmed that insulin therapy was closely related to diabetic risk factors and shortened telomere length. Conclusions The results revealed that Doanil therapy was more effective in managing diabetic risk and limiting the shortening telomere length than insulin therapy.
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Yan S, Gao S, Zhou P. Multi-functions of exonuclease 1 in DNA damage response and cancer susceptibility. RADIATION MEDICINE AND PROTECTION 2021. [DOI: 10.1016/j.radmp.2021.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Schreiter T, Gieseler RK, Vílchez-Vargas R, Jauregui R, Sowa JP, Klein-Scory S, Broering R, Croner RS, Treckmann JW, Link A, Canbay A. Transcriptome-Wide Analysis of Human Liver Reveals Age-Related Differences in the Expression of Select Functional Gene Clusters and Evidence for a PPP1R10-Governed 'Aging Cascade'. Pharmaceutics 2021; 13:pharmaceutics13122009. [PMID: 34959291 PMCID: PMC8709089 DOI: 10.3390/pharmaceutics13122009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/17/2021] [Accepted: 11/21/2021] [Indexed: 12/27/2022] Open
Abstract
A transcriptome-wide analysis of human liver for demonstrating differences between young and old humans has not yet been performed. However, identifying major age-related alterations in hepatic gene expression may pinpoint ontogenetic shifts with important hepatic and systemic consequences, provide novel pharmacogenetic information, offer clues to efficiently counteract symptoms of old age, and improve the overarching understanding of individual decline. Next-generation sequencing (NGS) data analyzed by the Mann-Whitney nonparametric test and Ensemble Feature Selection (EFS) bioinformatics identified 44 transcripts among 60,617 total and 19,986 protein-encoding transcripts that significantly (p = 0.0003 to 0.0464) and strikingly (EFS score > 0.3:16 transcripts; EFS score > 0.2:28 transcripts) differ between young and old livers. Most of these age-related transcripts were assigned to the categories 'regulome', 'inflammaging', 'regeneration', and 'pharmacogenes'. NGS results were confirmed by quantitative real-time polymerase chain reaction. Our results have important implications for the areas of ontogeny/aging and the age-dependent increase in major liver diseases. Finally, we present a broadly substantiated and testable hypothesis on a genetically governed 'aging cascade', wherein PPP1R10 acts as a putative ontogenetic master regulator, prominently flanked by IGFALS and DUSP1. This transcriptome-wide analysis of human liver offers potential clues towards developing safer and improved therapeutic interventions against major liver diseases and increased insights into key mechanisms underlying aging.
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Affiliation(s)
- Thomas Schreiter
- Department of Medicine, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany; (T.S.); (R.K.G.); (J.-P.S.); (S.K.-S.)
- Laboratory of Immunology & Molecular Biology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany
| | - Robert K. Gieseler
- Department of Medicine, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany; (T.S.); (R.K.G.); (J.-P.S.); (S.K.-S.)
- Laboratory of Immunology & Molecular Biology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany
| | - Ramiro Vílchez-Vargas
- Department of Gastroenterology, Hepatology, and Infectious Diseases, Medical Faculty, Otto-von-Guericke University, 39120 Magdeburg, Germany; (R.V.-V.); (A.L.)
| | - Ruy Jauregui
- Data Science Grasslands, Grasslands Research Centre, AgResearch, Palmerston North 4410, New Zealand;
| | - Jan-Peter Sowa
- Department of Medicine, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany; (T.S.); (R.K.G.); (J.-P.S.); (S.K.-S.)
- Laboratory of Immunology & Molecular Biology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany
| | - Susanne Klein-Scory
- Department of Medicine, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany; (T.S.); (R.K.G.); (J.-P.S.); (S.K.-S.)
- Laboratory of Immunology & Molecular Biology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany
| | - Ruth Broering
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany;
| | - Roland S. Croner
- Department of General, Visceral, Vascular and Transplantation Surgery, Medical Faculty, Otto-von-Guericke University, 39120 Magdeburg, Germany;
| | - Jürgen W. Treckmann
- Department of General, Visceral and Transplantation Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany;
| | - Alexander Link
- Department of Gastroenterology, Hepatology, and Infectious Diseases, Medical Faculty, Otto-von-Guericke University, 39120 Magdeburg, Germany; (R.V.-V.); (A.L.)
| | - Ali Canbay
- Department of Medicine, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany; (T.S.); (R.K.G.); (J.-P.S.); (S.K.-S.)
- Section of Hepatology and Gastroenterology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany
- Correspondence: ; Tel.: +49-234-299-3401
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Turkiewicz S, Ditmer M, Sochal M, Białasiewicz P, Strzelecki D, Gabryelska A. Obstructive Sleep Apnea as an Acceleration Trigger of Cellular Senescence Processes through Telomere Shortening. Int J Mol Sci 2021; 22:12536. [PMID: 34830418 PMCID: PMC8624921 DOI: 10.3390/ijms222212536] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/11/2021] [Accepted: 11/16/2021] [Indexed: 01/10/2023] Open
Abstract
Obstructive sleep apnea (OSA) is chronic disorder which is characterized by recurrent pauses of breathing during sleep which leads to hypoxia and its two main pathological sequelae: oxidative stress and chronic inflammation. Both are also associated with cellular senescence. As OSA patients present with higher prevalence of age-related disorders, such as atrial hypertension or diabetes mellitus type 2, a relationship between OSA and accelerated aging is observable. Furthermore, it has been established that these OSA are associated with telomere shortening. This process in OSA is likely caused by increased oxidative DNA damage due to increased reactive oxygen species levels, DNA repair disruptions, hypoxia, chronic inflammation, and circadian clock disturbances. The aim of the review is to summarize study outcomes on changes in leukocyte telomere length (LTL) in OSA patients and describe possible molecular mechanisms which connect cellular senescence and the pathophysiology of OSA. The majority of OSA patients are characterized by LTL attrition due to oxidative stress, hypoxia and inflammation, which make a kind of positive feedback loop, and circadian clock disturbance.
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Affiliation(s)
- Szymon Turkiewicz
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, 92-215 Lodz, Poland; (S.T.); (M.D.); (M.S.); (P.B.)
| | - Marta Ditmer
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, 92-215 Lodz, Poland; (S.T.); (M.D.); (M.S.); (P.B.)
| | - Marcin Sochal
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, 92-215 Lodz, Poland; (S.T.); (M.D.); (M.S.); (P.B.)
| | - Piotr Białasiewicz
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, 92-215 Lodz, Poland; (S.T.); (M.D.); (M.S.); (P.B.)
| | - Dominik Strzelecki
- Department of Affective and Psychotic Disorders, Medical University of Lodz, 92-215 Lodz, Poland;
| | - Agata Gabryelska
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, 92-215 Lodz, Poland; (S.T.); (M.D.); (M.S.); (P.B.)
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Wang Y, Chen S, Feng S, Wang C, Jiang H, Rong S, Hermann H, Chen J, Zhang P. Telomere shortening in patients on long-term hemodialysis. Chronic Dis Transl Med 2021; 7:266-275. [PMID: 34786545 PMCID: PMC8579019 DOI: 10.1016/j.cdtm.2021.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 01/14/2023] Open
Abstract
Background Leukocyte telomere length shortening is a characteristic of premature senescence, a process that can be accelerated by oxidative stress. In general, patients with end-stage renal disease undergoing regular hemodialysis (HD) are repeatedly exposed to oxidative stress. Patients undergoing HD tend to have cardiovascular diseases associated with oxidative stress and inflammation. Therefore, we assumed that telomere length is associated with HD vintage and the degree of vascular calcification. Methods A total of 144 patients undergoing regular HD before kidney transplantation and 62 patients on hemodialysis, but not undergoing kidney transplantation, were enrolled. We measured common laboratory values, such as calcium, phosphate, and hemoglobin levels, and assessed the degree of vascular calcification in the patients. The leukocyte telomere length was measured using reverse transcription polymerase chain reaction, and Spearman correlation was used for correlation analysis. Results The leukocyte telomere length was negatively associated with age (rho = −0.306, P<0.01); it was shorter in middle-aged patients than in young patients (13.48 ± 4.80 vs. 15.86 ± 4.51, P < 0.01). The telomere length was significantly different among patients aged 52–74 years in groups with different HD vintages. Additionally, the telomere length was positively associated with serum hemoglobin (Hb) levels in all patients (rho = 0.290, P < 0.01). There was a significant difference among patients divided into three groups according to the degree of anemia (17.09 ± 5.64 vs. 14.40 ± 4.07 vs. 13.99 ± 3.95, P < 0.01). Further, a significant difference was observed in the telomere length among patients with different degrees of vascular calcification (16.79 ± 4.91 vs. 13.61 ± 2.82 vs. 14.62 ± 3.63 vs. 10.71 ± 3.74, P < 0.01). The telomere length was shorter in the patients on hemodialysis who did not receive a kidney transplant than in the surgical patients (8.12 ± 1.83 vs. 14.33 ± 4.63, P < 0.01). Conclusion This study demonstrated that the telomere length was significantly correlated with HD vintage in patients of a certain age group. The telomere length was shorter in patients on hemodialysis who matched for age and dialysis vintage with kidney transplant patients. It was also associated with vascular calcification and serum Hb levels in all patients undergoing HD.
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Affiliation(s)
- Yucheng Wang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Siyu Chen
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Shi Feng
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Cuili Wang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Hong Jiang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Song Rong
- Clinic for Kidney and Hypertension Diseases, Hannover Medical School, Lower Saxony, 30625, Germany
| | - Haller Hermann
- Clinic for Kidney and Hypertension Diseases, Hannover Medical School, Lower Saxony, 30625, Germany
| | - Jianghua Chen
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Corresponding author. Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, Zhejiang, 310003, China.
| | - Ping Zhang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Nephropathy, Hangzhou, Zhejiang 310003, China
- Kidney Disease Immunology Laboratory, The Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, Zhejiang 310003, China
- Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, Zhejiang 310003, China
- Institute of Nephropathy, Zhejiang University, Hangzhou, Zhejiang 310003, China
- Corresponding author. Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, Zhejiang, 310003, China.
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Assis LHC, Andrade-Silva D, Shiburah ME, de Oliveira BCD, Paiva SC, Abuchery BE, Ferri YG, Fontes VS, de Oliveira LS, da Silva MS, Cano MIN. Cell Cycle, Telomeres, and Telomerase in Leishmania spp.: What Do We Know So Far? Cells 2021; 10:cells10113195. [PMID: 34831418 PMCID: PMC8621916 DOI: 10.3390/cells10113195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/12/2021] [Accepted: 11/14/2021] [Indexed: 12/18/2022] Open
Abstract
Leishmaniases belong to the inglorious group of neglected tropical diseases, presenting different degrees of manifestations severity. It is caused by the transmission of more than 20 species of parasites of the Leishmania genus. Nevertheless, the disease remains on the priority list for developing new treatments, since it affects millions in a vast geographical area, especially low-income people. Molecular biology studies are pioneers in parasitic research with the aim of discovering potential targets for drug development. Among them are the telomeres, DNA–protein structures that play an important role in the long term in cell cycle/survival. Telomeres are the physical ends of eukaryotic chromosomes. Due to their multiple interactions with different proteins that confer a likewise complex dynamic, they have emerged as objects of interest in many medical studies, including studies on leishmaniases. This review aims to gather information and elucidate what we know about the phenomena behind Leishmania spp. telomere maintenance and how it impacts the parasite’s cell cycle.
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Affiliation(s)
- Luiz H. C. Assis
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Débora Andrade-Silva
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Mark E. Shiburah
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Beatriz C. D. de Oliveira
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Stephany C. Paiva
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Bryan E. Abuchery
- DNA Replication and Repair Laboratory (DRRL), Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (B.E.A.); (Y.G.F.)
| | - Yete G. Ferri
- DNA Replication and Repair Laboratory (DRRL), Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (B.E.A.); (Y.G.F.)
| | - Veronica S. Fontes
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Leilane S. de Oliveira
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
| | - Marcelo S. da Silva
- DNA Replication and Repair Laboratory (DRRL), Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (B.E.A.); (Y.G.F.)
- Correspondence: (M.S.d.S.); (M.I.N.C.)
| | - Maria Isabel N. Cano
- Telomeres Laboratory, Department of Chemical and Biological Sciences, Biosciences Institute, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (L.H.C.A.); (D.A.-S.); (M.E.S.); (B.C.D.d.O.); (S.C.P.); (V.S.F.); (L.S.d.O.)
- Correspondence: (M.S.d.S.); (M.I.N.C.)
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Hecker M, Bühring J, Fitzner B, Rommer PS, Zettl UK. Genetic, Environmental and Lifestyle Determinants of Accelerated Telomere Attrition as Contributors to Risk and Severity of Multiple Sclerosis. Biomolecules 2021; 11:1510. [PMID: 34680143 PMCID: PMC8533505 DOI: 10.3390/biom11101510] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/01/2021] [Accepted: 10/08/2021] [Indexed: 02/06/2023] Open
Abstract
Telomeres are protective structures at the ends of linear chromosomes. Shortened telomere lengths (TL) are an indicator of premature biological aging and have been associated with a wide spectrum of disorders, including multiple sclerosis (MS). MS is a chronic inflammatory, demyelinating and neurodegenerative disease of the central nervous system. The exact cause of MS is still unclear. Here, we provide an overview of genetic, environmental and lifestyle factors that have been described to influence TL and to contribute to susceptibility to MS and possibly disease severity. We show that several early-life factors are linked to both reduced TL and higher risk of MS, e.g., adolescent obesity, lack of physical activity, smoking and vitamin D deficiency. This suggests that the mechanisms underlying the disease are connected to cellular aging and senescence promoted by increased inflammation and oxidative stress. Additional prospective research is needed to clearly define the extent to which lifestyle changes can slow down disease progression and prevent accelerated telomere loss in individual patients. It is also important to further elucidate the interactions between shared determinants of TL and MS. In future, cell type-specific studies and advanced TL measurement methods could help to better understand how telomeres may be causally involved in disease processes and to uncover novel opportunities for improved biomarkers and therapeutic interventions in MS.
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Affiliation(s)
- Michael Hecker
- Division of Neuroimmunology, Department of Neurology, Rostock University Medical Center, Gehlsheimer Str. 20, 18147 Rostock, Germany; (J.B.); (B.F.); (P.S.R.); (U.K.Z.)
| | - Jan Bühring
- Division of Neuroimmunology, Department of Neurology, Rostock University Medical Center, Gehlsheimer Str. 20, 18147 Rostock, Germany; (J.B.); (B.F.); (P.S.R.); (U.K.Z.)
| | - Brit Fitzner
- Division of Neuroimmunology, Department of Neurology, Rostock University Medical Center, Gehlsheimer Str. 20, 18147 Rostock, Germany; (J.B.); (B.F.); (P.S.R.); (U.K.Z.)
| | - Paulus Stefan Rommer
- Division of Neuroimmunology, Department of Neurology, Rostock University Medical Center, Gehlsheimer Str. 20, 18147 Rostock, Germany; (J.B.); (B.F.); (P.S.R.); (U.K.Z.)
- Department of Neurology, Medical University of Vienna, Währinger Gürtel 18–20, 1090 Vienna, Austria
| | - Uwe Klaus Zettl
- Division of Neuroimmunology, Department of Neurology, Rostock University Medical Center, Gehlsheimer Str. 20, 18147 Rostock, Germany; (J.B.); (B.F.); (P.S.R.); (U.K.Z.)
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Fernández de la Puente M, Hernández-Alonso P, Canudas S, Marti A, Fitó M, Razquin C, Salas-Salvadó J. Modulation of Telomere Length by Mediterranean Diet, Caloric Restriction, and Exercise: Results from PREDIMED-Plus Study. Antioxidants (Basel) 2021; 10:antiox10101596. [PMID: 34679731 PMCID: PMC8533372 DOI: 10.3390/antiox10101596] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/01/2021] [Accepted: 10/07/2021] [Indexed: 01/28/2023] Open
Abstract
Telomere length (TL) has been associated with aging and is determined by lifestyle. However, the mechanisms by which a dietary pattern such as the Mediterranean diet (MedDiet) affects TL homeostasis are still unknown. Our aim was to analyse the effect of an energy-restricted MedDiet with physical activity promotion (intervention group) versus an unrestricted-caloric MedDiet with no weight-loss advice (control group) on TL and 8-hydroxydeoxyguanosine (8-OHdG) plasma levels. In total, 80 non-diabetic participants with metabolic syndrome were randomly selected from the PREDIMED (PREvención con DIeta MEDiterránea)-Plus-Reus study. TL was measured by a hybridisation method and 8-OHdG levels by ELISA at baseline and after one year of intervention. Linear mixed models (LMM)—raw and after adjusting for potential confounders—were used to examine the associations between TL or 8-OHdG plasma levels by intervention group and/or time. A total of 69 subjects with available DNA samples were included in the analyses. A significant β-coefficient was found for time towards increasing values through the year of follow-up for TL (unadjusted β of 0.740 (95% CI: 0.529 to 0.951), and multivariable model β of 0.700 (95% CI: 0.477 to 0.922)). No significant βs were found, neither for the intervention group nor for the interaction between the intervention group and time. Regarding 8-OHdG plasma levels, no significant βs were found for the intervention group, time, and its interaction. Our results suggest that MedDiet could have an important role in preventing telomere shortening, but calorie restriction and exercise promotion did not provide an additional advantage concerning telomere length after one year of MedDiet intervention.
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Affiliation(s)
- María Fernández de la Puente
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, 43201 Reus, Spain; (M.F.d.l.P.); (P.H.-A.)
- Institut d’Investigació Sanitària Pere Virgili (IISPV), Hospital Universitari San Joan de Reus, 43204 Reus, Spain
| | - Pablo Hernández-Alonso
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, 43201 Reus, Spain; (M.F.d.l.P.); (P.H.-A.)
- Institut d’Investigació Sanitària Pere Virgili (IISPV), Hospital Universitari San Joan de Reus, 43204 Reus, Spain
- Institute of Biomedical Research of Malaga (IBIMA), Virgen de la Victoria University Hospital, 29010 Malaga, Spain
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, 28029 Madrid, Spain; (A.M.); (M.F.); (C.R.)
| | - Silvia Canudas
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, 43201 Reus, Spain; (M.F.d.l.P.); (P.H.-A.)
- Institut d’Investigació Sanitària Pere Virgili (IISPV), Hospital Universitari San Joan de Reus, 43204 Reus, Spain
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, 28029 Madrid, Spain; (A.M.); (M.F.); (C.R.)
- Correspondence: (S.C.); (J.S.-S.)
| | - Amelia Marti
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, 28029 Madrid, Spain; (A.M.); (M.F.); (C.R.)
- Department of Nutrition, Food Sciences and Physiology, University of Navarra, 31008 Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), University of Navarra, 31008 Pamplona, Spain
| | - Montserrat Fitó
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, 28029 Madrid, Spain; (A.M.); (M.F.); (C.R.)
- Cardiovascular Risk and Nutrition Research Group (CARIN), Hospital del Mar Research Institute (IMIM), 08003 Barcelona, Spain
| | - Cristina Razquin
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, 28029 Madrid, Spain; (A.M.); (M.F.); (C.R.)
- Department of Preventive Medicine and Public Health, Instituto de Investigación Sanitaria de Navarra (IdiSNA), University of Navarra, 31008 Pamplona, Spain
| | - Jordi Salas-Salvadó
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, 43201 Reus, Spain; (M.F.d.l.P.); (P.H.-A.)
- Institut d’Investigació Sanitària Pere Virgili (IISPV), Hospital Universitari San Joan de Reus, 43204 Reus, Spain
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, 28029 Madrid, Spain; (A.M.); (M.F.); (C.R.)
- Correspondence: (S.C.); (J.S.-S.)
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Antoine P, Terriou L, Lefèvre G, Kannengiesser C, Sanges S, Launay D, Sobanski V, Hachulla É, Louvet A, Willemin MC, Renaut-Marceau A, Lainey E, Sicre de Fontbrune F, Farhat MM. [Telomeropathies: A study of 15 cases]. Rev Med Interne 2021; 43:3-8. [PMID: 34649755 DOI: 10.1016/j.revmed.2021.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/24/2021] [Accepted: 09/20/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Telomeres are composed of a repeated sequence of double-stranded nucleotides TTAGGG and numerous proteins including the Shelterin complex. Their main role is to maintain the stability of the genome during cell replication through a mechanism of copying the repeted sequence by the telomerase complexe. All the diseases involving a deregulation of this complex are now grouped together under the term telomeropathies. They are difficult to diagnose and manage. Our objective was to describe the clinico-biological characteristics and treatments used, in patients affected by telomeropathies previously seen by an hematologist followed at the Lille University Hospital Center. METHODS This is a retrospective, single-center study carried out within the department of internal medicine-clinical immunology, Reference center for rare autoimmune and systemic diseases at Lille University Hospital Center between 2005 and 2020 including all patients followed for telomeropathy. RESULTS Probands and relatives were included. Fifteen patients were studied from 10 independant families. Sixty percent had an heterozygous TERC gene mutation. Sixty seven percent had haematological diseases including macrocytosis, anemia and/or thrombocytopenia, 20 % had a fibrotic hepatic disease, 27 % had a fibrotic pulmonary disease. Lymphocyte immunophenotyping showed a double negative T lymphocyte population with γδ TCR expression in 5 (33 %) patients. Forty-seven percent of the patients had not received any treatment. Twenty-seven percent were on androgen therapy. Twenty percent had received cyclosporine and 13 % anti-lymphocyte serum in the context of initial misdiagnosis. CONCLUSION It is important to be aware of the complexity of telomeropathies, a differential diagnosis of immune aplastic anemia, in order to optimize management and avoid inappropriate treatments. Allografting of hematopoietic stem cells is the only potentially curative treatment. Our analysis found particularities in immunophenotyping lymphocyte not previously described to our knowledge, whose physiopathological imputability remains to be demonstrated.
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Affiliation(s)
- P Antoine
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France
| | - L Terriou
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France
| | - G Lefèvre
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France; Centre de référence national des syndromes hyperéosinophiliques (CEREO), institut d'immunologie, Université de Lille, CHU de Lille, Lille, France
| | - C Kannengiesser
- Département de génétique, pôle de biologie, AP-HP, hôpital Bichat, université de Paris, 1152 Paris, France
| | - S Sanges
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France
| | - D Launay
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France
| | - V Sobanski
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France
| | - É Hachulla
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France
| | - A Louvet
- Service des maladies de l'appareil digestif, hôpital Claude-Huriez, CHU de Lille, Lille, France
| | - M-C Willemin
- Pneumologie et oncologie thoracique, université de Lille, Inserm U1019, CHU de Lille, CIIL, Institut Pasteur, 59000 Lille, France; MESOCLIN-réseau national des centres cliniques experts pour la prise en charge des mésothéliomes pleuraux malins, domiciliation du centre coordinateur national, CHU de Lille, 59000 Lille, France
| | - A Renaut-Marceau
- Université de Lille, CNRS, Inserm, CHU de Lille, UMR9020-U1277 - CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, 59000 Lille, France
| | - E Lainey
- Service d'hématologie biologique, hôpital Robert-Debré, APHP, UMRS_1131, institut universitaire d'hématologie, Paris, France
| | - F Sicre de Fontbrune
- Service d'hématologie greffe, centre de référence aplasie médullaire, Assistance publique des Hôpitaux de Paris, hôpital Saint-Louis, Paris, France
| | - M-M Farhat
- Université de. Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, 59000 Lille, France; Inserm, 59000 Lille, France; Service de médecine interne et immunologie clinique, centre de référence des maladies auto-immunes systémiques rares du Nord et Nord-Ouest de France (CeRAINO), CHU de Lille, 59000 Lille, France.
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129
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Peña E, León-Mengíbar J, Powell TR, Caixàs A, Cardoner N, Rosa A. Telomere length in patients with obesity submitted to bariatric surgery: A systematic review. EUROPEAN EATING DISORDERS REVIEW 2021; 29:842-853. [PMID: 34545641 DOI: 10.1002/erv.2865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Patients with obesity show evidence of increased levels of inflammation, oxidative stress and premature ageing. Telomere length (TL) is a key marker of cellular ageing, and patients with obesity often present shorter TL. Bariatric surgery (BS) is currently the most effective treatment for severe obesity. The aim of this systematic review was to explore whether the beneficial health effects observed after surgery in obese patients correspond to a restoration in TL or slower rates of shortening. As a secondary aim, we evaluated, at baseline and post-surgery, the relationship between TL and different factors that could play a role in TL changes along time. METHODS Searches for relevant articles were performed in MEDLINE, Web of Knowledge and SCOPUS. Prospective longitudinal studies that evaluated leukocyte TL in adult patients who had undergone BS were included. Data were extracted and evaluated by two independent researchers. The protocol was registered in PROSPERO with the number CRD42020197711. RESULTS Seven studies based on independent samples that fulfilled our inclusion criteria were included. Obese patients showed shorter telomeres compared to healthy individuals. Long-term studies (>2 years) seem to suggest an improvement in TL after surgery presumably due to the improvement of the inflammatory and oxidative levels of the patients induced by weight loss. CONCLUSION Studies seem to point towards a beneficial long-term effect of BS on TL recovery. However, the scarce number of studies and the heterogeneity in the variables analysed in the different cohorts make it difficult to draw a firm conclusion. More studies are needed to evaluate long-term changes to TL following BS.
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Affiliation(s)
- Eleonora Peña
- Secció de Zoologia i Antropologia Biològica, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain.,Institut de Biomedicina, Universitat de Barcelona (UB), Barcelona, Spain
| | - Josep León-Mengíbar
- Institut d'Investigació i Innovació Parc Taulí (I3PT), Corporacio Sanitària Parc taulí, Sabadell, Spain.,Endocrinology and Nutrition Department, Hospital Universitari Parc Tauli, Sabadell, Spain.,Medicine Department, Universitat Autònoma de Barcelona (UAB), Sabadell, Spain
| | - Timothy R Powell
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,Division of Infectious Diseases, Weill Cornell Medicine, Cornell University, New York, New York, USA
| | - Assumpta Caixàs
- Institut d'Investigació i Innovació Parc Taulí (I3PT), Corporacio Sanitària Parc taulí, Sabadell, Spain.,Endocrinology and Nutrition Department, Hospital Universitari Parc Tauli, Sabadell, Spain
| | - Narcís Cardoner
- Institut d'Investigació i Innovació Parc Taulí (I3PT), Corporacio Sanitària Parc taulí, Sabadell, Spain.,Mental Health Department, Corporació Sanitària Parc Taulí Sabadell, Barcelona, Spain.,Depression and Anxiety Program, Department of Mental Health, Parc Tauli Sabadell, Hospital Universitari, Barcelona, Spain.,Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centre for Biomedical Network on Mental Health (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
| | - Araceli Rosa
- Secció de Zoologia i Antropologia Biològica, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain.,Institut de Biomedicina, Universitat de Barcelona (UB), Barcelona, Spain.,Centre for Biomedical Network on Mental Health (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
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130
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García-García C, Shin C, Baik I. Association between body temperature and leukocyte telomere length in Korean middle-aged and older adults. Epidemiol Health 2021; 43:e2021063. [PMID: 34525499 PMCID: PMC8629693 DOI: 10.4178/epih.e2021063] [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: 06/10/2021] [Accepted: 09/08/2021] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVES Data on associations between body temperature (BT) and leukocyte telomere length (LTL), which has been widely used as a biomarker of cellular senescence in recent epidemiological studies, are limited. Therefore, this study aimed to explore the associations between a normal BT range (35.0-37.5°C) and LTL via 6-year longitudinal observations of 2,004 male and female adults aged 50 or older. METHODS BT was obtained by measuring the tympanic temperature, and relative LTL was determined by real-time polymerase chain reaction. Robust regression analysis was used to evaluate the association between the baseline and follow-up LTL values and their differences. RESULTS A significant inverse association was found between BT and LTL at baseline. The regression coefficient estimate was -0.03 (95% confidence interval, -0.07 to -0.001; p<0.05). This association was stronger in participants with a body mass index >25 kg/m2 and males (p<0.01). However, there were no associations between BT and LTL at follow-up or BT and 6-year longitudinal differences in LTL. CONCLUSIONS These findings suggest that having a high BT between 35°C and 37.5°C (95°F and 99°F) may be detrimental for obese individuals in terms of biological aging.
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Affiliation(s)
- Carolina García-García
- Department of Foods and Nutrition, College of Natural Sciences, Kookmin University, Seoul, Korea
| | - Chol Shin
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea
| | - Inkyung Baik
- Department of Foods and Nutrition, College of Natural Sciences, Kookmin University, Seoul, Korea
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131
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Monnin A, Vizeneux A, Nagot N, Eymard-Duvernay S, Meda N, Singata-Madliki M, Ndeezi G, Tumwine JK, Kankasa C, Goga A, Tylleskär T, Van de Perre P, Molès JP. Longitudinal Follow-Up of Blood Telomere Length in HIV-Exposed Uninfected Children Having Received One Year of Lopinavir/Ritonavir or Lamivudine as Prophylaxis. CHILDREN (BASEL, SWITZERLAND) 2021; 8:796. [PMID: 34572228 PMCID: PMC8468502 DOI: 10.3390/children8090796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022]
Abstract
Telomere shortening can be enhanced upon human immunodeficiency virus (HIV) infection and by antiretroviral (ARV) exposures. The aim of this study was to evaluate the acute and long-term effect on telomere shortening of two ARV prophylaxes, lopinavir/ritonavir (LPV/r) and lamivudine (3TC), administered to children who are HIV-exposed uninfected (CHEU) to prevent HIV acquisition through breastfeeding during the first year of life, and to investigate the relationship between telomere shortening and health outcomes at six years of age. We included 198 CHEU and measured telomere length at seven days of life, at week-50 and at six years (year-6) using quantitative polymerase chain reaction. At week-50, telomere shortening was observed among 44.3% of CHEU, irrespective of the prophylactic treatment. Furthermore, this telomere shortening was neither associated with poor growth indicators nor neuropsychological outcomes at year-6, except for motor abilities (MABC test n = 127, β = -3.61, 95%CI: -7.08, -0.14; p = 0.04). Safety data on telomere shortening for infant HIV prophylaxis are scarce. Its association with reduced motor abilities deserves further attention among CHEU but also HIV-infected children receiving ARV treatment.
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Affiliation(s)
- Audrey Monnin
- Pathogenèse et Contrôle des Infections Chroniques, INSERM U1058, Université Montpellier, Etablissement Français du Sang, University of Antilles, 34093 Montpellier, France; (A.M.); (A.V.); (N.N.); (S.E.-D.); (P.V.d.P.)
| | - Amélie Vizeneux
- Pathogenèse et Contrôle des Infections Chroniques, INSERM U1058, Université Montpellier, Etablissement Français du Sang, University of Antilles, 34093 Montpellier, France; (A.M.); (A.V.); (N.N.); (S.E.-D.); (P.V.d.P.)
| | - Nicolas Nagot
- Pathogenèse et Contrôle des Infections Chroniques, INSERM U1058, Université Montpellier, Etablissement Français du Sang, University of Antilles, 34093 Montpellier, France; (A.M.); (A.V.); (N.N.); (S.E.-D.); (P.V.d.P.)
| | - Sabrina Eymard-Duvernay
- Pathogenèse et Contrôle des Infections Chroniques, INSERM U1058, Université Montpellier, Etablissement Français du Sang, University of Antilles, 34093 Montpellier, France; (A.M.); (A.V.); (N.N.); (S.E.-D.); (P.V.d.P.)
| | - Nicolas Meda
- Centre Muraz, Bobo-Dioulasso 01 P.O. Box 390, Burkina Faso;
| | - Mandisa Singata-Madliki
- Effective Care Research Unit, Cecilia Makiwane Hospital, University of Fort Hare, East London 5207, South Africa;
| | - Grace Ndeezi
- Department of Paediatrics and Child Health, School of Medicine, College of Health Sciences, Makerere University, Kampala P.O. Box 317, Uganda; (G.N.); (J.K.T.)
| | - James Kashugyera Tumwine
- Department of Paediatrics and Child Health, School of Medicine, College of Health Sciences, Makerere University, Kampala P.O. Box 317, Uganda; (G.N.); (J.K.T.)
- School of Medicine, Kabale University, Kabale P.O. Box 317, Uganda
| | - Chipepo Kankasa
- Department of Paediatric and Child Health, University Teaching Hospital, University of Zambia School of Medicine, Lusaka P.O. Box 50110, Zambia;
| | - Ameena Goga
- HIV Prevention Research Unit, South African Medical Research Council, Private Bag x385, Pretoria 0001, South Africa;
| | - Thorkild Tylleskär
- Centre for International Health, Faculty of Medicine, University of Bergen, 5009 Bergen, Norway;
| | - Philippe Van de Perre
- Pathogenèse et Contrôle des Infections Chroniques, INSERM U1058, Université Montpellier, Etablissement Français du Sang, University of Antilles, 34093 Montpellier, France; (A.M.); (A.V.); (N.N.); (S.E.-D.); (P.V.d.P.)
| | - Jean-Pierre Molès
- Pathogenèse et Contrôle des Infections Chroniques, INSERM U1058, Université Montpellier, Etablissement Français du Sang, University of Antilles, 34093 Montpellier, France; (A.M.); (A.V.); (N.N.); (S.E.-D.); (P.V.d.P.)
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132
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Balajee AS. Human RecQL4 as a Novel Molecular Target for Cancer Therapy. Cytogenet Genome Res 2021; 161:305-327. [PMID: 34474412 DOI: 10.1159/000516568] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/24/2021] [Indexed: 11/19/2022] Open
Abstract
Human RecQ helicases play diverse roles in the maintenance of genomic stability. Inactivating mutations in 3 of the 5 human RecQ helicases are responsible for the pathogenesis of Werner syndrome (WS), Bloom syndrome (BS), Rothmund-Thomson syndrome (RTS), RAPADILINO, and Baller-Gerold syndrome (BGS). WS, BS, and RTS patients are at increased risk for developing many age-associated diseases including cancer. Mutations in RecQL1 and RecQL5 have not yet been associated with any human diseases so far. In terms of disease outcome, RecQL4 deserves special attention because mutations in RecQL4 result in 3 autosomal recessive syndromes (RTS type II, RAPADILINO, and BGS). RecQL4, like other human RecQ helicases, has been demonstrated to play a crucial role in the maintenance of genomic stability through participation in diverse DNA metabolic activities. Increased incidence of osteosarcoma in RecQL4-mutated RTS patients and elevated expression of RecQL4 in sporadic cancers including osteosarcoma suggest that loss or gain of RecQL4 expression is linked with cancer susceptibility. In this review, current and future perspectives are discussed on the potential use of RecQL4 as a novel cancer therapeutic target.
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Affiliation(s)
- Adayabalam S Balajee
- Cytogenetic Biodosimetry Laboratory, Radiation Emergency Assistance Center/Training Site, Oak Ridge Institute for Science and Education, Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA
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133
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Higher adherence to an empirically derived Mediterranean dietary pattern is positively associated with telomere length: the Seguimiento Universidad de Navarra (SUN) project. Br J Nutr 2021; 126:531-540. [PMID: 33143762 DOI: 10.1017/s0007114520004274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Telomere integrity is influenced by oxidative stress. Also, inflammation-related factors, including nutritional factors, could modulate telomere integrity. The relationship between a posteriori-derived dietary patterns and telomere length (TL) has been scarcely investigated. Thus, our objective was to examine the association between empirically derived dietary patterns ascertained through principal component analysis (PCA) and TL in an older adult Spanish population. A total of 886 older adults (>55 years old; 645 males and 241 females) from the Seguimiento Universidad de Navarra (SUN) cohort were included in the study. TL was measured by monochrome multiplex real-time quantitative PCR. Age-adjusted TL was used for all analyses. Dietary patterns were identified by PCA based on thirty predefined candidate food groups collected from a validated 136-food items frequency questionnaire. Generalised linear models were fitted to obtain β-coefficients and their 95 % CI evaluating differences in TL between each of the four upper quintiles of adherence to dietary patterns and the lowest quintile. Sensitivity analyses by rerunning all multiple linear models under different stratifications were performed to evaluate the robustness of our results. Two major dietary patterns were empirically identified, Western dietary pattern (WDP) and Mediterranean dietary pattern (MDP). After adjustment for potential confounders, longer TL was found among subjects in the highest quintile of MDP (β = 0·064; 95 % CI 0·004, 0·123). The WDP showed no significant association with TL. In conclusion, higher adherence to a posteriori-derived MDP was independently associated with longer telomeres in an older adult Spanish population of the SUN project.
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134
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Amirzadegan M, Sadeghi N, Tavalaee M, Nasr-Esfahani MH. Analysis of leukocyte and sperm telomere length in oligozoospermic men. Andrologia 2021; 53:e14204. [PMID: 34369610 DOI: 10.1111/and.14204] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/13/2021] [Accepted: 07/23/2021] [Indexed: 12/15/2022] Open
Abstract
Telomere length is considered one of the most relevant biological markers of genomic stability since it protects DNA from impairment and also ensures chromosome alignment during DNA replication. The negative impact of telomere shortening on sperm quality has been suggested as an important indicator of male infertility. Therefore, we aimed to assess leucocyte and sperm telomere length (LTL&STL), as well as sperm parameters, DNA damage and protamine deficiency in men with oligozoospermia as compared to fertile men. Our results demonstrated a significant reduction in sperm parameters (concentration, motility, morphology), LTL & STL and a significant increase in sperm DNA damage and protamine deficiency in oligozoospermic men compared with fertile individuals. These outcomes revealed that low sperm concentration in men is possibly a sign of impaired meiotic and/or meiotic division during the spermatogenesis process. It is not only associated with proper chromatin packaging but also with telomere length as a key player in the process of mitosis and meiosis, assisting in chromosomal alignment, pairing, synapsis and crossing over during spermatogenesis.
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Affiliation(s)
- Masoumeh Amirzadegan
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Niloofar Sadeghi
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Marziyeh Tavalaee
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Isfahan Fertility and Infertility Center, Isfahan, Iran
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135
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Guillén R, Otero F, Mosquera A, Vázquez-Mosquera M, Rego-Pérez I, Blanco FJ, Fernández JL. Association of accelerated dynamics of telomere sequence loss in peripheral blood leukocytes with incident knee osteoarthritis in Osteoarthritis Initiative cohort. Sci Rep 2021; 11:15914. [PMID: 34354128 PMCID: PMC8342605 DOI: 10.1038/s41598-021-95326-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 07/16/2021] [Indexed: 11/27/2022] Open
Abstract
Osteoarthritis (OA) is a chronic degenerative joint disease, being the main cause of laboral inability. Decreased telomere size in peripheral blood leukocytes (PBL) has been correlated with age-related pathologies, like knee OA. In a dynamic approach, telomere-qPCR was performed to evaluate the relative percentage of PBL telomere loss after a 6-year follow-up, in 281 subjects from the prospective osteoarthritis initiative (OAI) cohort. A radiological Kellgren-Lawrence (KL) grade ≥ 2 was indicative of knee OA. Individuals with knee OA at recruitment (n = 144) showed a higher PBL telomere loss after 6 years than those without knee OA at baseline (n = 137; p = 0.018). Moreover, individuals that developed knee OA during the follow-up (n = 39) exhibited a higher telomere loss compared to those that remained without OA (n = 98; p < 0.001). Logistic regression analysis showed that PBLs telomere loss was not significantly associated with knee OA at recruitment, but behaves as an independent risk factor associated with incidence after follow-up (OR: 1.043; p = 0.041), together with maximum KL grade (OR: 3.627; p = 0.011), body mass index-BMI (OR: 1.252; p < 0.001) and WOMAC-index (OR: 1.247; p = 0.021), at recruitment. The telomere decay in PBLs is faster in individuals with incident knee OA, possibly reflecting a systemic-global accelerated aging that enhances the cartilage degeneration.
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Affiliation(s)
- Rebeca Guillén
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.,Laboratory of Genetics and Radiobiology, Centro Oncológico de Galicia, A Coruña, Spain
| | - Fátima Otero
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.,Laboratory of Genetics and Radiobiology, Centro Oncológico de Galicia, A Coruña, Spain
| | - Alejandro Mosquera
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain
| | - María Vázquez-Mosquera
- Rheumatology Division, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain
| | - Ignacio Rego-Pérez
- Rheumatology Division, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain
| | - Francisco J Blanco
- Rheumatology Division, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain. .,Department of Physiotherapy, Medicine and Biomedical Sciences, Strategic Group CICA-INIBIC, Rheumatology and Health Group, Universidad de A Coruña, A Coruña, Spain. .,Rheumatology Division, Complexo Hospitalario Universitario A Coruña (CHUAC), As Xubias, 84, 15006, A Coruña, Spain.
| | - José Luis Fernández
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.,Laboratory of Genetics and Radiobiology, Centro Oncológico de Galicia, A Coruña, Spain
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Bühring J, Hecker M, Fitzner B, Zettl UK. Systematic Review of Studies on Telomere Length in Patients with Multiple Sclerosis. Aging Dis 2021; 12:1272-1286. [PMID: 34341708 PMCID: PMC8279528 DOI: 10.14336/ad.2021.0106] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/06/2021] [Indexed: 12/19/2022] Open
Abstract
Telomeres are protective cap structures at the end of chromosomes that are essential for maintaining genomic stability. Accelerated telomere shortening is related to premature cellular senescence. Shortened telomere lengths (TL) have been implicated in the pathogenesis of various chronic immune-mediated and neurological diseases. We aimed to systematically review the current literature on the association of TL as a measure of biological age and multiple sclerosis (MS). A comprehensive literature search was conducted to identify original studies that presented data on TL in samples from persons with MS. Quantitative and qualitative information was extracted from the articles to summarize and compare the studies. A total of 51 articles were screened, and 7 of them were included in this review. In 6 studies, average TL were analyzed in peripheral blood cells, whereas in one study, bone marrow-derived cells were used. Four of the studies reported significantly shorter leukocyte TL in at least one MS subtype in comparison to healthy controls (p=0.003 in meta-analysis). Shorter telomeres in patients with MS were found to be associated, independently of age, with greater disability, lower brain volume, increased relapse rate and more rapid conversion from relapsing to progressive MS. However, it remains unclear how telomere attrition in MS may be linked to oxidative stress, inflammation and age-related disease processes. Despite few studies in this field, there is substantial evidence on the association of TL and MS. Variability in TL appears to reflect heterogeneity in clinical presentation and course. Further investigations in large and well-characterized cohorts are warranted. More detailed studies on TL of individual chromosomes in specific cell types may help to gain new insights into the pathomechanisms of MS.
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Affiliation(s)
| | - Michael Hecker
- Correspondence should be addressed to: Dr. Michael Hecker, Rostock University Medical Center, Department of Neurology, Division of Neuroimmunology, Rostock, Germany. .
| | - Brit Fitzner
- Rostock University Medical Center, Department of Neurology, Division of Neuroimmunology, Rostock, Germany
| | - Uwe Klaus Zettl
- Rostock University Medical Center, Department of Neurology, Division of Neuroimmunology, Rostock, Germany
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137
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Gu R, Cao J, Wei S, Gong X, Wang Y, Mi Y, Zhang J, Qiu S, Rao Q, Wang M, Wei H, Wang J. Evaluation of pretreatment telomere length as a prognostic marker in intermediate-risk acute myeloid leukemia. Int J Lab Hematol 2021; 43:1510-1515. [PMID: 34288423 DOI: 10.1111/ijlh.13665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/20/2021] [Accepted: 07/06/2021] [Indexed: 01/07/2023]
Abstract
INTRODUCTION The current framework for risk stratification is still insufficient for highly heterogeneous intermediate-risk acute myeloid leukemia (IRC-AML), which lacks specific genomic abnormalities. METHODS In order to incorporate novel biomarkers to refine current risk stratification strategies for patients with this subtype, we investigated pretreatment telomere length (TL), which is essential for maintaining genomic stability, in 204 adults with de novo AML (non-acute promyelocytic leukemia). RESULTS We found that TL measured at diagnosis did not decrease with advancing age in 204 patients with AML (R2 = 0.001, P = .695). A multivariate analysis demonstrated that short TL was independently associated with an inferior relapse-free survival (hazard ratio [HR] 3.08, 95% confidence interval [CI] 1.48-6.41, P = .003); event-free survival (HR 2.14, 95% CI 1.12-4.08, P = .021); and overall survival (HR 2.26, 95% CI 1.09-4.67, P = .028) in IRC-AML patients. In addition, IRC-AML patients with short TL also exhibited an increased cumulative incidence of hematologic relapse (HR 2.32, 95% CI 1.08-5.26, P = .032). CONCLUSION Short TL is an independent prognostic factor for poor prognosis in patients with IRC-AML and may represent a novel mechanism that links genomic stability and disease progression.
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Affiliation(s)
- Runxia Gu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Jingjing Cao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Shuning Wei
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Xiaoyuan Gong
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Ying Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Yingchang Mi
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Junping Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Shaowei Qiu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Qing Rao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Min Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Hui Wei
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Jianxiang Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
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Astronauts well-being and possibly anti-aging improved during long-duration spaceflight. Sci Rep 2021; 11:14907. [PMID: 34290387 PMCID: PMC8295322 DOI: 10.1038/s41598-021-94478-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/12/2021] [Indexed: 02/06/2023] Open
Abstract
This study assesses how circadian rhythms of heart rate (HR), HR variability (HRV) and activity change during long-term missions in space and how they relate to sleep quality. Ambulatory 48-h ECG and 96-h actigraphy were performed four times on ten healthy astronauts (44.7 ± 6.9 years; 9 men): 120.4 ± 43.7 days (Before) launch; 21.1 ± 2.5 days (ISS01) and 143.0 ± 27.1 days (ISS02) after launch; and 86.6 ± 40.6 days (After) return to Earth. Sleep quality was determined by sleep-related changes in activity, RR-intervals, HRV HF- and VLF-components and LF-band. The circadian amplitude of HR (HR-A) was larger in space (ISS01: 12.54, P = 0.0099; ISS02: 12.77, P = 0.0364) than on Earth (Before: 10.90; After: 10.55 bpm). Sleep duration in space (ISS01/ISS02) increased in 3 (Group A, from 370.7 to 388.0/413.0 min) and decreased in 7 (Group B, from 454.0 to 408.9/381.6 min) astronauts. Sleep quality improved in Group B from 7.07 to 8.36 (ISS01) and 9.36 (ISS02, P = 0.0001). Sleep-related parasympathetic activity increased from 55.2% to 74.8% (pNN50, P = 0.0010) (ISS02). HR-A correlated with the 24-h (r = 0.8110, P = 0.0044), 12-h (r = 0.6963, P = 0.0253), and 48-h (r = 0.6921, P = 0.0266) amplitudes of the magnetic declination index. These findings suggest associations of mission duration with increased well-being and anti-aging benefitting from magnetic fluctuations.
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139
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Telomeres: New players in immune-mediated inflammatory diseases? J Autoimmun 2021; 123:102699. [PMID: 34265700 DOI: 10.1016/j.jaut.2021.102699] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/21/2022]
Abstract
Telomeres are repetitive DNA sequences located at the ends of linear chromosomes that preserve the integrity and stability of the genome. Telomere dysfunctions due to short telomeres or altered telomere structures can ultimately lead to replicative cellular senescence and chromosomal instability, both mechanisms being hallmarks of ageing. Chronic inflammation, oxidative stress and finally telomere length (TL) dynamics have been shown to be involved in various age-related non-communicable diseases (NCDs). Immune-mediated inflammatory diseases (IMIDs), including affections such as inflammatory bowel disease, psoriasis, rheumatoid arthritis, spondyloarthritis and uveitis belong to this group of age-related NCDs. Although in recent years, we have witnessed the emergence of studies in the literature linking these IMIDs to TL dynamics, the causality between these diseases and telomere attrition is still unclear and controversial. In this review, we provide an overview of available studies on telomere dynamics and discuss the utility of TL measurements in immune-mediated inflammatory diseases.
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140
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Next-Generation Biomarkers in Multiple Myeloma: Understanding the Molecular Basis for Potential Use in Diagnosis and Prognosis. Int J Mol Sci 2021; 22:ijms22147470. [PMID: 34299097 PMCID: PMC8305153 DOI: 10.3390/ijms22147470] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/25/2021] [Accepted: 07/02/2021] [Indexed: 12/19/2022] Open
Abstract
Multiple myeloma (MM) is considered to be the second most common blood malignancy and it is characterized by abnormal proliferation and an accumulation of malignant plasma cells in the bone marrow. Although the currently utilized markers in the diagnosis and assessment of MM are showing promising results, the incidence and mortality rate of the disease are still high. Therefore, exploring and developing better diagnostic or prognostic biomarkers have drawn global interest. In the present review, we highlight some of the recently reported and investigated novel biomarkers that have great potentials as diagnostic and/or prognostic tools in MM. These biomarkers include angiogenic markers, miRNAs as well as proteomic and immunological biomarkers. Moreover, we present some of the advanced methodologies that could be utilized in the early and competent diagnosis of MM. The present review also focuses on understanding the molecular concepts and pathways involved in these biomarkers in order to validate and efficiently utilize them. The present review may also help in identifying areas of improvement for better diagnosis and superior outcomes of MM.
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141
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Searching for female reproductive aging and longevity biomarkers. Aging (Albany NY) 2021; 13:16873-16894. [PMID: 34156973 PMCID: PMC8266318 DOI: 10.18632/aging.203206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 05/31/2021] [Indexed: 12/21/2022]
Abstract
Female reproductive aging is, in a way, a biological phenomenon that develops along canonical molecular pathways; however, it has particular features. Recent studies revealed complexity of the interconnections between reproductive aging and aging of other systems, and even suggested a cause-effect uncertainty between them. It was also shown that reproductive aging can impact aging processes in an organism at the level of cells, tissues, organs, and systems. Women at the end of their reproductive lives are characterized by the accelerated incidence of age-related diseases. Timing of the onset of menarche and menopause and variability in the duration of reproductive life carry a latent social risk: not having enough information about the reproductive potential, women keep on postponing childbirth. Identification and use of the most accurate and sensitive aging biomarkers enable the prediction of menopause timing and quantification of the true biological and reproductive ages of an organism. We discuss current views on reproductive aging and peculiarities of using available biomarkers of aging. We also consider latest advances in the search for potential genetic markers of reproductive aging. Finally, we posit the importance of determining the female biological age and highlight potential research directions in this area.
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142
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Baskind M, Hawkins J, Heyman MB, Wojcicki JM. Obesity at Age 6 Months Is Associated with Shorter Preschool Leukocyte Telomere Length Independent of Parental Telomere Length. J Pediatr 2021; 233:141-149. [PMID: 33242471 PMCID: PMC8141537 DOI: 10.1016/j.jpeds.2020.11.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To assess whether early modifiable dietary factors and obesity measures are associated with leukocyte telomere length at 3-5 years of age after controlling for the heritability of leukocyte telomere length in a prospective cohort of low-income Latina mothers and their children in San Francisco. STUDY DESIGN We analyzed data from the Latinx, Eating and Diabetes cohort, a prospective study of 97 woman-infant dyads. We used linear regression models to evaluate associations between early dietary factors and obesity measures and child leukocyte telomere length at 3-5 years of age. Multivariable models included child age at the time of telomere collection, breastfeeding at 6 months (yes/no), obesity at 6 months, maternal education, child sex, and maternal and paternal leukocyte telomere length. RESULTS Data for 73 of the 97 children at 3-5 years of age were analyzed. Any breastfeeding at 6 months was positively associated (β = 0.14; P = .02) and obesity at 6 months was negatively associated (β = -0.21; P < .001) with leukocyte telomere length in bivariate analyses. In multivariable models including parental leukocyte telomere length, obesity at 6 months was associated with a shorter leukocyte telomere length at 3-5 years of age (β = -0.15; P = .02). Analyses of dietary factors showed high flavored milk consumption at 3 years of age was associated with shorter leukocyte telomere length after adjustment for possible confounders. CONCLUSIONS In a low-income Latinx population, obesity at 6 months of age is negatively associated with cellular health at 3-5 years of age after controlling for genetic factors (parental leukocyte telomere length) associated with leukocyte telomere length. Early life obesity may be more deleterious for cellular health than obesity later in childhood.
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Affiliation(s)
- Melanie Baskind
- Department of Pediatrics, University of California San Francisco, San Francisco, California
| | - Jessica Hawkins
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of California San Francisco, San Francisco, California
| | - Melvin B. Heyman
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of California San Francisco, San Francisco, California
| | - Janet M Wojcicki
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of California San Francisco, San Francisco, CA; Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA.
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143
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Antoine P, Terriou L, Farhat M. Téloméropathies : étude de 15 cas. Rev Med Interne 2021. [DOI: 10.1016/j.revmed.2021.03.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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144
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Low-power infrared laser modulates telomere length in heart tissue from an experimental model of acute lung injury. Photochem Photobiol Sci 2021; 20:653-661. [PMID: 34009632 PMCID: PMC8131880 DOI: 10.1007/s43630-021-00051-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 04/28/2021] [Indexed: 01/22/2023]
Abstract
Acute lung injury and acute respiratory distress syndrome can occur as a result of sepsis. Cardiac dysfunction is a serious component of multi-organ failure caused by severe sepsis. Telomere shortening is related to several heart diseases. Telomeres are associated with the shelterin protein complex, which contributes to the maintenance of telomere length. Low-power infrared lasers modulate mRNA levels of shelterin complex genes. This study aimed to evaluate effects of a low-power infrared laser on mRNA relative levels of genes involved in telomere stabilization and telomere length in heart tissue of an experimental model of acute lung injury caused by sepsis. Animals were divided into six groups, treated with intraperitoneal saline solution, saline solution and exposed to a low-power infrared laser at 10 J cm−2 and 20 J cm−2, lipopolysaccharide (LPS), and LPS and, after 4 h, exposed to a low-power infrared laser at 10 J cm−2 and 20 J cm−2. The laser exposure was performed only once. Analysis of mRNA relative levels and telomere length by RT-qPCR was performed. Telomere shortening and reduction in mRNA relative levels of TRF1 mRNA in heart tissues of LPS-induced ALI animals were observed. In addition, laser exposure increased the telomere length at 10 J cm−2 and modulated the TRF1 mRNA relative levels of at 20 J cm−2 in healthy animals. Although the telomeres were shortened and mRNA levels of TRF1 gene were increased in nontreated controls, the low-power infrared laser irradiation increased the telomere length at 10 J cm−2 in cardiac tissue of animals affected by LPS-induced acute lung injury, which suggests that telomere maintenance is a part of the photobiomodulation effect induced by infrared radiation.
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145
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MacKenzie D, Watters AK, To JT, Young MW, Muratori J, Wilkoff MH, Abraham RG, Plummer MM, Zhang D. ALT Positivity in Human Cancers: Prevalence and Clinical Insights. Cancers (Basel) 2021; 13:2384. [PMID: 34069193 PMCID: PMC8156225 DOI: 10.3390/cancers13102384] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 02/08/2023] Open
Abstract
Many exciting advances in cancer-related telomere biology have been made in the past decade. Of these recent advances, great progress has also been made with respect to the Alternative Lengthening of Telomeres (ALT) pathway. Along with a better understanding of the molecular mechanism of this unique telomere maintenance pathway, many studies have also evaluated ALT activity in various cancer subtypes. We first briefly review and assess a variety of commonly used ALT biomarkers. Then, we provide both an update on ALT-positive (ALT+) tumor prevalence as well as a systematic clinical assessment of the presently studied ALT+ malignancies. Additionally, we discuss the pathogenetic alterations in ALT+ cancers, for example, the mutation status of ATRX and DAXX, and their correlations with the activation of the ALT pathway. Finally, we highlight important ALT+ clinical associations within each cancer subtype and subdivisions within, as well as their prognoses. We hope this alternative perspective will allow scientists, clinicians, and drug developers to have greater insight into the ALT cancers so that together, we may develop more efficacious treatments and improved management strategies to meet the urgent needs of cancer patients.
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Affiliation(s)
| | | | | | | | | | | | | | - Maria M. Plummer
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, NY 11568, USA; (D.M.J.); (A.K.W.); (J.T.T.); (M.W.Y.); (J.M.); (M.H.W.); (R.G.A.)
| | - Dong Zhang
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, NY 11568, USA; (D.M.J.); (A.K.W.); (J.T.T.); (M.W.Y.); (J.M.); (M.H.W.); (R.G.A.)
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146
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Habib I, Khan S, Mohammad T, Hussain A, Alajmi MF, Rehman T, Anjum F, Hassan MI. Impact of non-synonymous mutations on the structure and function of telomeric repeat binding factor 1. J Biomol Struct Dyn 2021; 40:9053-9066. [PMID: 33982644 DOI: 10.1080/07391102.2021.1922313] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Telomeric repeat binding factor 1 (TRF1) is one of the major components of the shelterin complex. It directly binds to the telomere and controls its function by regulating the telomerase acting on it. Several variations are reported in the TRF1 gene; some are associated with variety of diseases. Here, we have studied the structural and functional significance of these variations in the TRFH domain of TRF1. We have used cutting-edge computational methods such as SIFT, PolyPhen-2, PROVEAN, Mutation Assessor, mCSM, SDM, STRUM, MAESTRO, and DUET to predict the effects of 124 mutations in the TRFH domain of TRF1. Out of 124 mutations, we have identified 12 deleterious mutations with high confidence based on their prediction. To see the impact of the finally selected mutations on the structure and stability of TRF1, all-atom molecular dynamics (MD) simulations on TRF1-Wild type (WT), L79R and P150R mutants for 200 ns were carried out. A significant conformational change in the structure of the P150R mutant was observed. Our integrated computational study provides a comprehensive understanding of structural changes in TRF1 incurred due to the mutations and subsequent function, leading to the progression of many diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Insan Habib
- Department of Computer Science, Jamia Millia Islamia, New Delhi, India
| | - Shama Khan
- Drug Discovery and Development Centre (H3D), University of Cape Town, Rondebosch, South Africa
| | - Taj Mohammad
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed F Alajmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Farah Anjum
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
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147
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Simna SP, Han Z. Prospects Of Non-Coding Elements In Genomic Dna Based Gene Therapy. Curr Gene Ther 2021; 22:89-103. [PMID: 33874871 DOI: 10.2174/1566523221666210419090357] [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: 12/05/2020] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 11/22/2022]
Abstract
Gene therapy has made significant development since the commencement of the first clinical trials a few decades ago and has remained a dynamic area of research regardless of obstacles such as immune response and insertional mutagenesis. Progression in various technologies like next-generation sequencing (NGS) and nanotechnology has established the importance of non-coding segments of a genome, thereby taking gene therapy to the next level. In this review, we have summarized the importance of non-coding elements, highlighting the advantages of using full-length genomic DNA loci (gDNA) compared to complementary DNA (cDNA) or minigene, currently used in gene therapy. The focus of this review is to provide an overview of the advances and the future of potential use of gDNA loci in gene therapy, expanding the therapeutic repertoire in molecular medicine.
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Affiliation(s)
- S P Simna
- Department of Ophthalmology, the University of North Carolina at Chapel Hill, Chapel Hill, NC 27599. United States
| | - Zongchao Han
- Department of Ophthalmology, the University of North Carolina at Chapel Hill, Chapel Hill, NC 27599. United States
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148
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Liu Y, Zhao X, Wang B, Liu Z, Zhang M, Wang J, Xu C, Wang Y, Du L, Wang F, Wang Q, Liu Q. miR-376a Provokes Rectum Adenocarcinoma Via CTC1 Depletion-Induced Telomere Dysfunction. Front Cell Dev Biol 2021; 9:649328. [PMID: 33937245 PMCID: PMC8085492 DOI: 10.3389/fcell.2021.649328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
CTC1 is a component of the mammalian CST (CTC1–STN1–TEN1) complex which plays essential roles in resolving replication problems to facilitate telomeric DNA and genomic DNA replication. We previously reported that the depletion of CTC1 leads to stalled replication fork restart defects. Moreover, the mutation in CTC1 caused cancer-prone diseases including Coats plus (CP) or dyskeratosis congenita (DC). To better understand the CTC1 regulatory axis, the microRNAs (miRNAs) targeting to CTC1 were predicted by a bioinformatics tool, and the selected candidates were further confirmed by a dual-luciferase reporter assay. Here, our current results revealed that miR-376a significantly reduced CTC1 expression at the transcription level by recognizing CTC1 3′-UTR. In addition, the overexpression of miR-376a induced telomere replication defection and resulted in direct replicative telomere damage, which could be rescued by adding back CTC1. Telomere shortening was also observed upon miR-376a treatment. Furthermore, for the clinical patient samples, the high expression of miR-376a was associated with the deregulation of CTC1 and a poor outcome for the rectum adenocarcinoma patients. Together, our results uncovered a novel role of miR-376a in stimulating rectum adenocarcinoma progression via CTC1 downregulating induced telomere dysfunction.
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Affiliation(s)
- Yang Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Xiaotong Zhao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Bing Wang
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Zhijia Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Manman Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Jinhan Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Chang Xu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Yan Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Liqing Du
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Feng Wang
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Qin Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
| | - Qiang Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Tianjin, China
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149
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Telomeres in Interstitial Lung Disease. J Clin Med 2021; 10:jcm10071384. [PMID: 33808277 PMCID: PMC8037770 DOI: 10.3390/jcm10071384] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/18/2021] [Accepted: 03/23/2021] [Indexed: 01/15/2023] Open
Abstract
Interstitial lung diseases (ILD) encompass a group of conditions involving fibrosis and/or inflammation of the pulmonary parenchyma. Telomeres are repetitive DNA sequences at chromosome ends which protect against genome instability. At each cell division, telomeres shorten, but the telomerase complex partially counteracts progressive loss of telomeres by catalysing the synthesis of telomeric repeats. Once critical telomere shortening is reached, cell cycle arrest or apoptosis are triggered. Telomeres progressively shorten with age. A number of rare genetic mutations have been identified in genes encoding for components of the telomerase complex, including telomerase reverse transcriptase (TERT) and telomerase RNA component (TERC), in familial and, less frequently, in sporadic fibrotic ILDs. Defects in telomerase result in extremely short telomeres. More rapidly progressive disease is observed in fibrotic ILD patients with telomere gene mutations, regardless of underlying diagnosis. Associations with common single nucleotide polymorphisms in telomere related genes have also been demonstrated for various ILDs. Shorter peripheral blood telomere lengths compared to age-matched healthy individuals are found in a proportion of patients with fibrotic ILDs, and in idiopathic pulmonary fibrosis (IPF) and fibrotic hypersensitivity pneumonitis (HP) have been linked to worse survival, independently of disease severity. Greater susceptibility to immunosuppressant-induced side effects in patients with short telomeres has been described in patients with IPF and with fibrotic HP. Here, we discuss recent evidence for the involvement of telomere length and genetic variations in the development, progression, and treatment of fibrotic ILDs.
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150
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Akbarizare M, Ofoghi H, Hadizadeh M. Dual effect of Sapogenins extracted from Spirulina platensis on telomerase activity in two different cell lines. MOLECULAR BIOLOGY RESEARCH COMMUNICATIONS 2021; 10:1-4. [PMID: 33681391 PMCID: PMC7936387 DOI: 10.22099/mbrc.2020.38230.1537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Spirulina platensis is a photosynthetic filamentous, edible cyanobacterium that is known as a superfood. In this study, sapogenins were extracted from the spirulina and the effects of these compounds on telomerase activity were evaluated in MCF7 and HDF cell lines using Telomeric Repeat Amplification Protocol and ELIZA assay. The highest increase in telomerase activity was observed at 0.004 mg/ml of sapogenin by 26% ±20.5 in MCF7 cells, while in HDF cells in the same concentration telomerase activity decreased down to 47%±0.48 and the highest inhibition of telomerase activity was observed at 0.070 mg/ml of sapogenins from Spirulina by 68%±0.43. In conclusion, a compound could play a role as a telomerase activator in one cell line while it could play another role as a telomerase inhibitor in another cell line so introducing compounds as a telomerase inhibitor (anticancer) or as a telomerase activator (anti-aging) should be done with discreet.
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Affiliation(s)
| | - Hamideh Ofoghi
- Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Mahnaz Hadizadeh
- Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
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