1
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Li C, Song L, Zhou Y, Yuan J, Zhang S. Identification of Isthmin1 in the small annual fish, Nothobranchius guentheri, as a novel biomarker of aging and its potential rejuvenation activity. Biogerontology 2022; 23:99-114. [PMID: 34988750 DOI: 10.1007/s10522-021-09948-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022]
Abstract
Isthmin 1 (Ism1) has been shown to play roles in multiple biological processes including morphogenesis, hematopoiesis, antiviral immune response and suppression of tumor growth. However, it remains unknown if it plays any role in aging process. Here we showed for the first time that Ism1 was a new age-related biomarker, which decreased with age in fish, mice and humans. Interestingly, Ism1 was also useful to measure the "rejuvenated" age of fish Nothobranchius guentheri reversed by salidroside treatment and temperature reduction, providing additional evidence that Ism1 was an aging biomarker. In addition, we clearly showed that dietary intake of recombinant Ism1 had little effects on the body length and weight of aging N. guentheri, but it retarded the onset of age-related biomarkers and prolonged both the maximum and median lifespan of the fish. We also showed that Ism1 exerted its rejuvenation activity via the enhancement of antioxidant system. Collectively, our results indicate that Ism1 is not only is a novel biomarker of aging but also a potential rejuvenation factor capable of reversing aging of N. guentheri.
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Affiliation(s)
- Congjun Li
- Institute of Evolution & Marine Biodiversity and Department of Marine Biology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Lili Song
- Institute of Evolution & Marine Biodiversity and Department of Marine Biology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Yang Zhou
- Institute of Evolution & Marine Biodiversity and Department of Marine Biology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Jiangshui Yuan
- Clinical Laboratory, Qingdao Municipal Hospital, Qingdao, 266011, Shandong, China
| | - Shicui Zhang
- Institute of Evolution & Marine Biodiversity and Department of Marine Biology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China. .,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China.
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2
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Wu L, Xie X, Liang T, Ma J, Yang L, Yang J, Li L, Xi Y, Li H, Zhang J, Chen X, Ding Y, Wu Q. Integrated Multi-Omics for Novel Aging Biomarkers and Antiaging Targets. Biomolecules 2021; 12:39. [PMID: 35053186 PMCID: PMC8773837 DOI: 10.3390/biom12010039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/17/2021] [Accepted: 12/19/2021] [Indexed: 12/12/2022] Open
Abstract
Aging is closely related to the occurrence of human diseases; however, its exact biological mechanism is unclear. Advancements in high-throughput technology provide new opportunities for omics research to understand the pathological process of various complex human diseases. However, single-omics technologies only provide limited insights into the biological mechanisms of diseases. DNA, RNA, protein, metabolites, and microorganisms usually play complementary roles and perform certain biological functions together. In this review, we summarize multi-omics methods based on the most relevant biomarkers in single-omics to better understand molecular functions and disease causes. The integration of multi-omics technologies can systematically reveal the interactions among aging molecules from a multidimensional perspective. Our review provides new insights regarding the discovery of aging biomarkers, mechanism of aging, and identification of novel antiaging targets. Overall, data from genomics, transcriptomics, proteomics, metabolomics, integromics, microbiomics, and systems biology contribute to the identification of new candidate biomarkers for aging and novel targets for antiaging interventions.
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Affiliation(s)
- Lei Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (J.M.); (X.C.)
| | - Xinqiang Xie
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
| | - Tingting Liang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (J.M.); (X.C.)
| | - Jun Ma
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (J.M.); (X.C.)
| | - Lingshuang Yang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
| | - Juan Yang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (J.M.); (X.C.)
| | - Longyan Li
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
| | - Yu Xi
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
| | - Haixin Li
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
| | - Xuefeng Chen
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (J.M.); (X.C.)
| | - Yu Ding
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; (L.W.); (X.X.); (T.L.); (L.Y.); (J.Y.); (L.L.); (Y.X.); (H.L.); (J.Z.)
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3
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Criscuolo F, Dobson FS, Schull Q. The influence of phylogeny and life history on telomere lengths and telomere rate of change among bird species: A meta-analysis. Ecol Evol 2021; 11:12908-12922. [PMID: 34646443 DOI: 10.22541/au.162308930.07224518/v1] [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: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 05/19/2023] Open
Abstract
Longevity is highly variable among animal species and has coevolved with other life-history traits, such as body size and rates of reproduction. Telomeres, through their erosion over time, are one of the cell mechanisms that produce senescence at the cell level and might even have an influence on the rate of aging in whole organisms. However, uneroded telomeres are also risk factors of cell immortalization. The associations of telomere lengths, their rate of change, and life-history traits independent of body size are largely underexplored for birds. To test associations of life-history traits and telomere dynamics, we conducted a phylogenetic meta-analysis using studies of 53 species of birds. We restricted analyses to studies that applied the telomere restriction fragment length (TRF) method, and examined relationships between mean telomere length at the chick (Chick TL) and adult (Adult TL) stages, the mean rate of change in telomere length during life (TROC), and life-history traits. We examined 3 principal components of 12 life-history variables that represented: body size (PC1), the slow-fast continuum of pace of life (PC2), and postfledging parental care (PC3). Phylogeny had at best a small-to-medium influence on Adult and Chick TL (r 2 = .190 and .138, respectively), but a substantial influence on TROC (r 2 = .688). Phylogeny strongly influenced life histories: PC1 (r 2 = .828), PC2 (.838), and PC3 (.613). Adult TL and Chick TL were poorly associated with the life-history variables. TROC, however, was negatively and moderate-to-strongly associated with PC2 (unadjusted r = -.340; with phylogenetic correction, r = -.490). Independent of body size, long-lived species with smaller clutches, and slower embryonic rate of growth may exhibit less change in telomere length over their lifetimes. We suggest that telomere lengths may have diverged, even among closely avian-related species, yet telomere dynamics are strongly linked to the pace of life.
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Affiliation(s)
- François Criscuolo
- CNRS Institut Pluridisciplinaire Hubert Curien UMR 7178 University of Strasbourg Strasbourg France
| | - F Stephen Dobson
- CNRS Institut Pluridisciplinaire Hubert Curien UMR 7178 University of Strasbourg Strasbourg France
- Department of Biological Sciences Auburn University Auburn AL USA
| | - Quentin Schull
- MARBEC IFREMER IRD CNRS University of Montpellier Sète France
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4
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Criscuolo F, Dobson FS, Schull Q. The influence of phylogeny and life history on telomere lengths and telomere rate of change among bird species: A meta-analysis. Ecol Evol 2021; 11:12908-12922. [PMID: 34646443 PMCID: PMC8495793 DOI: 10.1002/ece3.7931] [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: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 11/09/2022] Open
Abstract
Longevity is highly variable among animal species and has coevolved with other life-history traits, such as body size and rates of reproduction. Telomeres, through their erosion over time, are one of the cell mechanisms that produce senescence at the cell level and might even have an influence on the rate of aging in whole organisms. However, uneroded telomeres are also risk factors of cell immortalization. The associations of telomere lengths, their rate of change, and life-history traits independent of body size are largely underexplored for birds. To test associations of life-history traits and telomere dynamics, we conducted a phylogenetic meta-analysis using studies of 53 species of birds. We restricted analyses to studies that applied the telomere restriction fragment length (TRF) method, and examined relationships between mean telomere length at the chick (Chick TL) and adult (Adult TL) stages, the mean rate of change in telomere length during life (TROC), and life-history traits. We examined 3 principal components of 12 life-history variables that represented: body size (PC1), the slow-fast continuum of pace of life (PC2), and postfledging parental care (PC3). Phylogeny had at best a small-to-medium influence on Adult and Chick TL (r 2 = .190 and .138, respectively), but a substantial influence on TROC (r 2 = .688). Phylogeny strongly influenced life histories: PC1 (r 2 = .828), PC2 (.838), and PC3 (.613). Adult TL and Chick TL were poorly associated with the life-history variables. TROC, however, was negatively and moderate-to-strongly associated with PC2 (unadjusted r = -.340; with phylogenetic correction, r = -.490). Independent of body size, long-lived species with smaller clutches, and slower embryonic rate of growth may exhibit less change in telomere length over their lifetimes. We suggest that telomere lengths may have diverged, even among closely avian-related species, yet telomere dynamics are strongly linked to the pace of life.
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Affiliation(s)
- François Criscuolo
- CNRSInstitut Pluridisciplinaire Hubert CurienUMR 7178University of StrasbourgStrasbourgFrance
| | - F. Stephen Dobson
- CNRSInstitut Pluridisciplinaire Hubert CurienUMR 7178University of StrasbourgStrasbourgFrance
- Department of Biological SciencesAuburn UniversityAuburnALUSA
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5
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Kamal S, Junaid M, Ejaz A, Bibi I, Akash MSH, Rehman K. The secrets of telomerase: Retrospective analysis and future prospects. Life Sci 2020; 257:118115. [PMID: 32698073 DOI: 10.1016/j.lfs.2020.118115] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/06/2020] [Accepted: 07/13/2020] [Indexed: 12/12/2022]
Abstract
Telomerase plays a significant role to maintain and regulate the telomere length, cellular immortality and senescence by the addition of guanine-rich repetitive sequences. Chronic inflammation or oxidative stress-induced infection downregulates TERT gene modifying telomerase activity thus contributing to the early steps of gastric carcinogenesis process. Furthermore, telomere-telomerase system performs fundamental role in the pathogenesis and progression of diabetes mellitus as well as in its vascular intricacy. The cessation of cell proliferation in cultured cells by inhibiting the telomerase activity of transformed cells renders the rationale for culling of telomerase as a target therapy for the treatment of metabolic disorders and various types of cancers. In this article, we have briefly described the role of immune system and malignant cells in the expression of telomerase with critical analysis on the gaps and potential for future studies. The key findings regarding the secrets of the telomerase summarized in this article will help in future treatment modalities for the prevention of various types of cancers and metabolic disorders notably diabetes mellitus.
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Affiliation(s)
- Shagufta Kamal
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Muhammad Junaid
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Arslan Ejaz
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Ismat Bibi
- Department of Chemistry, Islamia University, Bahawalpur, Pakistan
| | | | - Kanwal Rehman
- Department of Pharmacy, University of Agriculture, Faisalabad, Pakistan.
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6
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Lulkiewicz M, Bajsert J, Kopczynski P, Barczak W, Rubis B. Telomere length: how the length makes a difference. Mol Biol Rep 2020; 47:7181-7188. [PMID: 32876842 PMCID: PMC7561533 DOI: 10.1007/s11033-020-05551-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 05/23/2020] [Indexed: 12/22/2022]
Abstract
Telomerase is perceived as an immortality enzyme that might provide longevity to cells and whole organisms. Importantly, it is generally inactive in most somatic cells of healthy, adult men. Consequently, its substrates, i.e. telomeres, get shorter in most human cells with time. Noteworthy, cell life limitation due to telomere attrition during cell divisions, may not be as bad as it looks since longer cell life means longer exposition to harmful factors. Consequently, telomere length (attrition rate) becomes a factor that is responsible for inducing the signaling that leads to the elimination of cells that lived long enough to acquire severe damage. It seems that telomere length that depends on many different factors (including telomerase activity but also genetic factors, a hormonal profile that reflects sex, etc.) might become a useful marker of aging and exposition to stress. Thus in the current paper, we review the factors that affect telomere length in human cells focusing on sex that all together with different environmental and hormonal regulations as well as parental aspect affect telomere attrition rate. We also raise some limitations in the assessment of telomere length that hinders a trustworthy meta-analysis that might lead to acknowledgment of the real value of this parameter.
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Affiliation(s)
- M Lulkiewicz
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 49 Przybyszewskiego St., 60-355, Poznan, Poland
| | - J Bajsert
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 49 Przybyszewskiego St., 60-355, Poznan, Poland
| | - P Kopczynski
- Centre for Orthodontic Mini-Implants at the Department and Clinic of Maxillofacial Orthopedics and Orthodontics, Poznan University of Medical Sciences, 60-812, Poznan, Poland
| | - W Barczak
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, 61-866, Poznan, Poland.,Radiobiology Laboratory, Department of Medical Physics, The Greater Poland Cancer Centre, 61-866, Poznan, Poland
| | - B Rubis
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 49 Przybyszewskiego St., 60-355, Poznan, Poland.
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7
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Guinobert I, Blondeau C, Colicchio B, Oudrhiri N, Dieterlen A, Jeandidier E, Deschenes G, Bardot V, Cotte C, Ripoche I, Carde P, Berthomier L, M’Kacher R. The Use of Natural Agents to Counteract Telomere Shortening: Effects of a Multi-Component Extract of Astragalus mongholicus Bunge and Danazol. Biomedicines 2020; 8:biomedicines8020031. [PMID: 32059353 PMCID: PMC7168059 DOI: 10.3390/biomedicines8020031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 12/16/2022] Open
Abstract
A link between telomere shortening and oxidative stress was found in aging people and patients with cancer or inflammatory diseases. Extracts of Astragalus spp. are known to stimulate telomerase activity, thereby compensating telomere shortening. We characterized a multi-component hydroethanolic root extract (HRE) of Astragalus mongholicus Bunge and assessed its effects on telomeres compared to those of danazol. Astragalosides I to IV, flavonoids, amino acids and sugars were detected in the HRE. Samples of peripheral blood lymphocytes with short telomeres from 18 healthy donors (mean age 63.5 years; range 32–86 years) were exposed to a single dose of 1 µg/mL HRE or danazol for three days. Telomere length and telomerase expression were then measured. Significant elongation of telomeres associated to a less toxicity was observed in lymphocytes from 13/18 donors following HRE treatment (0.54 kb (0.15–2.06 kb)) and in those from 9/18 donors after danazol treatment (0.95 kb (0.06–2.06 kb)). The rate of cells with short telomeres (<3 kb) decreased in lymphocytes from all donors after exposure to either HRE or danazol, telomere elongation being telomerase-dependent. These findings suggest that the HRE could be used for the management of age-related diseases.
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Affiliation(s)
- Isabelle Guinobert
- Groupe PiLeJe, 37 Quai de Grenelle, 75015 Paris Cedex 15, Naturopôle, Les Tiolans, 03800 Saint-Bonnet de Rochefort, France; (I.G.); (C.B.); (V.B.); (C.C.)
| | - Claude Blondeau
- Groupe PiLeJe, 37 Quai de Grenelle, 75015 Paris Cedex 15, Naturopôle, Les Tiolans, 03800 Saint-Bonnet de Rochefort, France; (I.G.); (C.B.); (V.B.); (C.C.)
| | - Bruno Colicchio
- IRIMAS, Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, 68093 Mulhouse, France; (B.C.); (A.D.)
| | - Noufissa Oudrhiri
- Service d’Hématologie Moléculaire et Cytogénétique Paul Brousse CHU Paris Sud, Université Paris Sud, Inserm UMRS935, 94800 Villejuif, France;
| | - Alain Dieterlen
- IRIMAS, Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, 68093 Mulhouse, France; (B.C.); (A.D.)
| | - Eric Jeandidier
- Service de Génétique Médicale, Groupe Hospitalier de la Région de Mulhouse et Sud-Alsace, 68070 Mulhouse, France;
| | - Georges Deschenes
- Service de Néphrologie, APHP-Hôpital Robert Debré, 75019 Paris, France;
| | - Valérie Bardot
- Groupe PiLeJe, 37 Quai de Grenelle, 75015 Paris Cedex 15, Naturopôle, Les Tiolans, 03800 Saint-Bonnet de Rochefort, France; (I.G.); (C.B.); (V.B.); (C.C.)
| | - César Cotte
- Groupe PiLeJe, 37 Quai de Grenelle, 75015 Paris Cedex 15, Naturopôle, Les Tiolans, 03800 Saint-Bonnet de Rochefort, France; (I.G.); (C.B.); (V.B.); (C.C.)
| | - Isabelle Ripoche
- Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, CNRS, SIGMA Clermont, BP 10448, 63000 Clermont-Ferrand, France; (I.R.); (L.B.)
| | - Patrice Carde
- Département d’hématologie, Gustave Roussy Cancer Campus, université Paris Saclay, 94808 Villejuif, France;
| | - Lucile Berthomier
- Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, CNRS, SIGMA Clermont, BP 10448, 63000 Clermont-Ferrand, France; (I.R.); (L.B.)
| | - Radhia M’Kacher
- Cell Environment, DNA damage R&D, 75020 Paris, France
- Correspondence: ; Tel.: +33-01-48-81-30-38
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Current nutritional and pharmacological anti-aging interventions. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165612. [PMID: 31816437 DOI: 10.1016/j.bbadis.2019.165612] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 12/26/2022]
Abstract
Aging is the main risk factor for chronic diseases and disablement in human societies with a great impact in social and health care expenditures. So far, aging and, eventually, death are unavoidable. Nevertheless, research efforts on aging-associated diseases with the aim not only to extend life span but also to increment health span in an attempt to delay, stop and even reverse the aging process have not stopped growing. Caloric restriction extends both health and life span in several short-lived experimental models and has brought to light the role of different molecular effectors involved in nutrient sensing pathways and longevity. This opens the possibility of modulating these molecular effectors also in humans to increase longevity and health span. The difficulty to implement caloric restricted diets in humans has led to the development of new bearable diets such as time-restricted feeding, intermittent fasting or diets with limited amounts of some nutrients and to the search of pharmacological agents, targeted to the effectors that mediate the extension of life and health span in response to these anti-aging diets. Pharmacological approaches that eliminate senescent cells or prevent primary causes of aging such as telomere attrition also emerge as potential anti-aging strategies. In the present article, we review these possible nutritional and pharmacological interventions designed to mitigate and/or delay the aging process and to increase health and life span.
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Ekiz G, Yılmaz S, Yusufoglu H, Kırmızıbayrak PB, Bedir E. Microbial Transformation of Cycloastragenol and Astragenol by Endophytic Fungi Isolated from Astragalus Species. JOURNAL OF NATURAL PRODUCTS 2019; 82:2979-2985. [PMID: 31713424 DOI: 10.1021/acs.jnatprod.9b00336] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biotransformation of Astragalus sapogenins (cycloastragenol (1) and astragenol (2)) by Astragalus species originated endophytic fungi resulted in the production of five new metabolites (3, 7, 10, 12, 14) together with 10 known compounds. The structures of the new compounds were established by NMR spectroscopic and HRMS analysis. Oxygenation, oxidation, epoxidation, dehydrogenation, and ring cleavage reactions were observed on the cycloartane (9,19-cyclolanostane) nucleus. The ability of the compounds to increase telomerase activity in neonatal cells was also evaluated. After prescreening studies to define potent telomerase activators, four compounds were selected for subsequent bioassays. These were performed using very low doses ranging from 0.1 to 30 nM compared to the control cells treated with DMSO. The positive control cycloastragenol and 8 were found to be the most active compounds, with 5.2- (2 nM) and 5.1- (0.5 nM) fold activations versus DMSO, respectively. At the lowest dose of 0.1 nM, compounds 4 and 13 provided 3.5- and 3.8-fold activations, respectively, while cycloastragenol showed a limited activation (1.5-fold).
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Affiliation(s)
- Güner Ekiz
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy , Near East University , Nicosia , Mersin 10 , Turkey
- Department of Bioengineering, Graduate School of Natural and Applied Sciences , Ege University , 35100 Bornova-İzmir , Turkey
| | - Sinem Yılmaz
- Department of Bioengineering, Faculty of Engineering , University of Alanya Aladdin Keykubat , Antalya 07400 , Turkey
- Department of Biotechnology, Graduate School of Natural and Applied Sciences , Ege University , 35100 Bornova-İzmir , Turkey
| | - Hasan Yusufoglu
- Department of Pharmacognosy, College of Pharmacy , Prince Sattam Bin Abdulaziz University , 11942 Al-Kharj , Saudi Arabia
| | | | - Erdal Bedir
- Department of Bioengineering, Faculty of Engineering , Izmir Institute of Technology , 35430 Urla-Izmir , Turkey
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10
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Libertini G, Ferrara N, Rengo G, Corbi G. Elimination of Senescent Cells: Prospects According to the Subtelomere-Telomere Theory. BIOCHEMISTRY (MOSCOW) 2019; 83:1477-1488. [PMID: 30878023 DOI: 10.1134/s0006297918120064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cell senescence is an artificially reversible condition activated by various factors and characterized by replicative senescence and typical general alteration of cell functions, including extra-cellular secretion. The number of senescent cells increases with age and contributes strongly to the manifestations of aging. For these reasons, research is under way to obtain "senolytic" compounds, defined as drugs that eliminate senescent cells and therefore reduce aging-associated decay, as already shown in some experiments on animal models. This objective is analyzed in the context of the programmed aging paradigm, as described by the mechanisms of the subtelomere-telomere theory. In this regard, positive effects of the elimination of senescent cells and limits of this method are discussed. For comparison, positive effects and limits of telomerase activation are also analyzed, as well of the combined action of the two methods and the possible association of opportune gene modifications. Ethical issues associated with the use of these methods are outlined.
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Affiliation(s)
- G Libertini
- Federico II University, Department of Translational Medical Sciences, Naples, 80138, Italy.
| | - N Ferrara
- Federico II University, Department of Translational Medical Sciences, Naples, 80138, Italy
| | - G Rengo
- Federico II University, Department of Translational Medical Sciences, Naples, 80138, Italy
| | - G Corbi
- Federico II University, Department of Translational Medical Sciences, Naples, 80138, Italy
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11
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12
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Criscuolo F, Smith S, Zahn S, Heidinger BJ, Haussmann MF. Experimental manipulation of telomere length: does it reveal a corner-stone role for telomerase in the natural variability of individual fitness? Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2016.0440. [PMID: 29335364 DOI: 10.1098/rstb.2016.0440] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2017] [Indexed: 12/11/2022] Open
Abstract
Telomeres, the non-coding ends of linear chromosomes, are thought to be an important mechanism of individual variability in performance. Research suggests that longer telomeres are indicative of better health and increased fitness; however, many of these data are correlational and whether these effects are causal are poorly understood. Experimental tests are emerging in medical and laboratory-based studies, but these types of experiments are rare in natural populations, which precludes conclusions at an evolutionary level. At the crossroads between telomere length and fitness is telomerase, an enzyme that can lengthen telomeres. Experimental modulation of telomerase activity is a powerful tool to manipulate telomere length, and to look at the covariation of telomerase, telomeres and individual life-history traits. Here, we review studies that manipulate telomerase activity in laboratory conditions and emphasize the associated physiological and fitness consequences. We then discuss how telomerase's impact on ageing may go beyond telomere maintenance. Based on this overview, we then propose several research avenues for future studies to explore how individual variability in health, reproduction and survival may have coevolved with different patterns of telomerase activity and expression. Such knowledge is of prime importance to fully understand the role that telomere dynamics play in the evolution of animal ageing.This article is part of the theme issue 'Understanding diversity in telomere dynamics'.
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Affiliation(s)
- F Criscuolo
- Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France
| | - S Smith
- Department of Integrative Biology and Evolution, University of Veterinary Medicine, Vienna, Austria
| | - S Zahn
- Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France
| | - B J Heidinger
- Biological Sciences Department, North Dakota State University, Stevens Hall, Fargo, ND 58108, USA
| | - M F Haussmann
- Department of Biology, Bucknell University, Lewisburg, PA 17837, USA
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13
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Beta-carotene, telomerase activity and Alzheimer’s disease in old age subjects. Eur J Nutr 2019; 59:119-126. [DOI: 10.1007/s00394-019-01892-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 01/05/2019] [Indexed: 12/29/2022]
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14
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Cheung DST, Deng W, Tsao SW, Ho RTH, Chan CLW, Fong DYT, Chau PH, Hong AWL, Fung HYKY, Ma JLC, Tiwari AFY. Effect of a Qigong Intervention on Telomerase Activity and Mental Health in Chinese Women Survivors of Intimate Partner Violence: A Randomized Clinical Trial. JAMA Netw Open 2019; 2:e186967. [PMID: 30646209 PMCID: PMC6484539 DOI: 10.1001/jamanetworkopen.2018.6967] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE Qigong is a mind-body exercise that may be an effective self-care intervention for improving the well-being of women survivors of intimate partner violence. OBJECTIVE To test whether a qigong intervention would increase telomerase activity and improve mental health in Chinese women who survived intimate partner violence. DESIGN, SETTING, AND PARTICIPANTS A single-blind randomized clinical trial among Chinese women (N = 271) who survived intimate partner violence in the past 2 years recruited from a community center in Hong Kong, China. The trial was conducted from March 12, 2014, to May 26, 2016. Data analysis was by intention to treat and performed from June 7 to August 24, 2018. INTERVENTIONS Randomization (1:1) to a 22-week qigong intervention (n = 136) that included 22 weeks of Baduanjin qigong group training (1-6 weeks: 2-hour sessions biweekly; 7-22 weeks: 1-hour follow-up sessions weekly) and self-practice (30 minutes per day for 22 weeks) or to a wait-list control group (n = 135) that received optional monthly health education sessions unrelated to qigong after 6 weeks (posttraining period) and qigong training after 22 weeks (postintervention period). MAIN OUTCOMES AND MEASURES The primary outcome was telomerase activity in peripheral blood mononuclear cells. The secondary outcomes included levels of proinflammatory cytokines (tumor necrosis factor and interleukin 6) in peripheral blood plasma, depressive symptoms (Beck Depression Inventory II score; score range, 0-63; higher scores represent more severe depressive symptoms), perceived stress (Perceived Stress Scale; score range, 0-40; higher scores represent higher stress), and perceived coping (Perceived Coping Scale; score range, 0-13; higher scores represent use of more coping strategies). RESULTS From 1611 Chinese women screened (mean [SD] age, 42.0 [8.8] years), 247 of 271 randomized participants completed the study (intervention group, 120; wait-list control group, 127). Telomerase activity of the intervention group participants after 22 weeks was not significantly different from that of the wait-list control group participants (5.18 U [95% CI, 5.05-5.31 U] in the intervention group vs 5.14 U [95% CI, 5.01-5.27 U] in the wait-list control group; P = .66). The mean change in telomerase activity from baseline was marginally significant in the intervention group (effect size [d], 0.13; 95% CI, 0.001-0.27) but not in the wait-list control group (d, -0.03; 95% CI, -0.16 to 0.10). Perceived stress and depressive symptoms were significantly lower in the intervention group than in the wait-list control group after 6 weeks (between-group differences: perceived stress: d, -1.81; 95% CI, -3.27 to -0.34; depressive symptoms: d, -3.57; 95% CI, -6.25 to -0.90), but not after 22 weeks (between-group differences: perceived stress: d, -1.03; 95% CI, -2.50 to 0.43; depressive symptoms: d, -1.78; 95% CI, -4.26 to 0.70). CONCLUSIONS AND RELEVANCE The findings of this study do not support a significant benefit of Baduanjin qigong on telomerase activity in women who have survived intimate partner violence. However, outcomes related to mental health seem to be improved, which should be confirmed by additional studies. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02060123.
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Affiliation(s)
- Denise Shuk Ting Cheung
- School of Nursing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | - Wen Deng
- School of Nursing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | - Sai-Wah Tsao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | - Rainbow Tin Hung Ho
- Centre on Behavioral Health, The University of Hong Kong, Hong Kong, China
- Department of Social Work and Social Administration, University of Hong Kong, Pokfulam, Hong Kong, China
| | - Cecilia Lai Wan Chan
- Department of Social Work and Social Administration, University of Hong Kong, Pokfulam, Hong Kong, China
| | - Daniel Yee Tak Fong
- School of Nursing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | - Pui Hing Chau
- School of Nursing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | - Athena Wai Lin Hong
- School of Nursing, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
| | | | - Joyce Lai Chong Ma
- Department of Social Work, Chinese University of Hong Kong, United College, Shatin, New Territories, Hong Kong, China
| | - Agnes F. Y. Tiwari
- School of Nursing, Hong Kong Sanatorium and Hospital, Wong Chuk Hang, Hong Kong, China
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15
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Xu K, Guo Y, Li Z, Wang Z. Aging Biomarkers and Novel Targets for Anti-Aging Interventions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1178:39-56. [PMID: 31493221 DOI: 10.1007/978-3-030-25650-0_3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The aging population worldwide is expanding at an increasing rate. By 2050, approximately a quarter of the world population will consist of the elderly. To slow down the aging process, exploration of aging biomarkers and the search for novel antiaging targets have attracted much interest. Nonetheless, because aging research is costly and time-consuming and the aging process is complicated, aging research is considered one of the most difficult biological fields. Here, providing a broader definition of aging biomarkers, we review cutting-edge research on aging biomarkers at the molecular, cellular, and organismal levels, thus shedding light on the relations between aging and telomeres, longevity proteins, a senescence-associated secretory phenotype, the gut microbiota and metabolic patterns. Furthermore, we evaluate the suitability of these aging biomarkers for the development of novel antiaging targets on the basis of the most recent research on this topic. We also discuss the possible implications and some controversies regarding these biomarkers for therapeutic interventions in aging and age-related disease processes. We have attempted to cover all of the latest research on aging biomarkers in our review but there are countless studies on aging biomarkers, and the topic of aging interventions will continue to deepen even further. We hope that our review can serve as a reference for better characterization of aging and as inspiration for the screening of antiaging drugs as well as give some clues to further research into aging biomarkers and antiaging targets.
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Affiliation(s)
- Kang Xu
- Protein Science Key Laboratory of the Ministry of Education, School of Pharmaceutical Sciences, Tsinghua University, Beijing, People's Republic of China
| | - Yannan Guo
- Protein Science Key Laboratory of the Ministry of Education, School of Pharmaceutical Sciences, Tsinghua University, Beijing, People's Republic of China
| | - Zhongchi Li
- Protein Science Key Laboratory of the Ministry of Education, School of Pharmaceutical Sciences, Tsinghua University, Beijing, People's Republic of China
| | - Zhao Wang
- Protein Science Key Laboratory of the Ministry of Education, School of Pharmaceutical Sciences, Tsinghua University, Beijing, People's Republic of China.
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16
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Young AJ. The role of telomeres in the mechanisms and evolution of life-history trade-offs and ageing. Philos Trans R Soc Lond B Biol Sci 2018; 373:20160452. [PMID: 29335379 PMCID: PMC5784072 DOI: 10.1098/rstb.2016.0452] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2017] [Indexed: 12/16/2022] Open
Abstract
Evolutionary biology and biomedicine have seen a surge of recent interest in the possibility that telomeres play a role in life-history trade-offs and ageing. Here, I evaluate alternative hypotheses for the role of telomeres in the mechanisms and evolution of life-history trade-offs and ageing, and highlight outstanding challenges. First, while recent findings underscore the possibility of a proximate causal role for telomeres in current-future trade-offs and ageing, it is currently unclear (i) whether telomeres ever play a causal role in either and (ii) whether any causal role for telomeres arises via shortening or length-independent mechanisms. Second, I consider why, if telomeres do play a proximate causal role, selection has not decoupled such a telomere-mediated trade-off between current and future performance. Evidence suggests that evolutionary constraints have not rendered such decoupling impossible. Instead, a causal role for telomeres would more plausibly reflect an adaptive strategy, born of telomere maintenance costs and/or a function for telomere attrition (e.g. in countering cancer), the relative importance of which is currently unclear. Finally, I consider the potential for telomere biology to clarify the constraints at play in life-history evolution, and to explain the form of the current-future trade-offs and ageing trajectories that we observe today.This article is part of the theme issue 'Understanding diversity in telomere dynamics'.
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Affiliation(s)
- Andrew J Young
- School of Biosciences, University of Exeter Penryn Campus, Penryn TR10 9FE, UK
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17
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Wang J, Feng Y, Han P, Wang F, Luo X, Liang J, Sun X, Ye J, Lu Y, Sun X. Photosensitization of A2E triggers telomere dysfunction and accelerates retinal pigment epithelium senescence. Cell Death Dis 2018; 9:178. [PMID: 29415988 PMCID: PMC5833825 DOI: 10.1038/s41419-017-0200-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/06/2017] [Accepted: 11/28/2017] [Indexed: 12/12/2022]
Abstract
Age-related macular degeneration (AMD) is the leading cause of irreversible vision loss in elderly people. AMD is classified as early, intermediate, advanced non-neovascular, and advanced neovascular forms depending on the clinical features. However, the exact pathogenesis remains unclear. Retinal pigment epithelium (RPE) cells degeneration is a hallmark of AMD. With aging, lipofuscin accumulates in RPE cells. N-retinylidene-N-retinylethanolamine (named A2E), a well-known fluorophore of lipofuscin, may contribute to RPE cells degeneration. In this study, we showed that photosensitization of A2E increased DNA damage, including telomere deprotection and deletion, and triggered cellular senescence. In addition, we found that the antioxidant N-acetyl-cysteine (NAC) partially alleviated this DNA damage. Telomerase overexpression rescued A2E-mediated RPE cell senescence, indicating that telomere dysfunction plays an important role in A2E-based senescence. We further showed that the senescence induced by A2E photosensitization may affect the microenvironment of the retina by expressing several factors of the secretory phenotype (SASP) including IL1B, IL13RA2, and CXCR4 through the NF-κB pathway. We propose that expression of these factors create a pro-inflammatory environment that drives retina degeneration. Moreover, our findings suggest that protecting telomeres is a valuable strategy for treating retinal degeneration diseases, such as AMD.
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Affiliation(s)
- Jing Wang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China.,International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China
| | - Yiji Feng
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China
| | - Peng Han
- International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China
| | - Fenghua Wang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China.,Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China
| | - Xueting Luo
- Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China.,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China
| | - Jian Liang
- Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China.,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China
| | - Xiangjun Sun
- School of Biology and Agriculture, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Ye
- International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China
| | - Yiming Lu
- International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China.
| | - Xiaodong Sun
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China. .,Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China. .,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China.
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18
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Hou C, Wang F, Liu X, Chang G, Wang F, Geng X. Comprehensive Analysis of Interaction Networks of Telomerase Reverse Transcriptase with Multiple Bioinformatic Approaches: Deep Mining the Potential Functions of Telomere and Telomerase. Rejuvenation Res 2017; 20:320-333. [PMID: 28281877 DOI: 10.1089/rej.2016.1909] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Telomerase reverse transcriptase (TERT) is the protein component of telomerase complex. Evidence has accumulated showing that the nontelomeric functions of TERT are independent of telomere elongation. However, the mechanisms governing the interaction between TERT and its target genes are not clearly revealed. The biological functions of TERT are not fully elucidated and have thus far been underestimated. To further explore these functions, we investigated TERT interaction networks using multiple bioinformatic databases, including BioGRID, STRING, DAVID, GeneCards, GeneMANIA, PANTHER, miRWalk, mirTarBase, miRNet, miRDB, and TargetScan. In addition, network diagrams were built using Cytoscape software. As competing endogenous RNAs (ceRNAs) are endogenous transcripts that compete for the binding of microRNAs (miRNAs) by using shared miRNA recognition elements, they are involved in creating widespread regulatory networks. Therefore, the ceRNA regulatory networks of TERT were also investigated in this study. Interestingly, we found that the three genes PABPC1, SLC7A11, and TP53 were present in both TERT interaction networks and ceRNAs target genes. It was predicted that TERT might play nontelomeric roles in the generation or development of some rare diseases, such as Rift Valley fever and dyscalculia. Thus, our data will help to decipher the interaction networks of TERT and reveal the unknown functions of telomerase in cancer and aging-related diseases.
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Affiliation(s)
- Chunyu Hou
- 1 Department of Biochemistry and Molecular Biology, Tianjin Medical University , Tianjin, China .,2 Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital , Tianjin, China
| | - Fei Wang
- 3 Department of Neurology, Tianjin Medical University , Tianjin, China
| | - Xuewen Liu
- 1 Department of Biochemistry and Molecular Biology, Tianjin Medical University , Tianjin, China
| | - Guangming Chang
- 4 Department of Clinical Laboratory, General Hospital, Tianjin Medical University , Tianjin, China
| | - Feng Wang
- 5 Department of Genetics, Tianjin Medical University , Tianjin, China
| | - Xin Geng
- 1 Department of Biochemistry and Molecular Biology, Tianjin Medical University , Tianjin, China .,6 Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University , Tianjin, China .,7 Key Laboratory of Educational Ministry of China, Tianjin Medical University , Tianjin, China
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19
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Strazhesko ID, Tkacheva ON, Akasheva DU, Dudinskaya EN, Plokhova EV, Pykhtina VS, Kruglikova AS, Kokshagina NV, Sharashkina NV, Agaltsov MV, Kashtanova DA, Vygodin VA, Ozerova IN, Skvortsov DA, Vasilkova D, Boytsov SA. Atorvastatin Therapy Modulates Telomerase Activity in Patients Free of Atherosclerotic Cardiovascular Diseases. Front Pharmacol 2016; 7:347. [PMID: 27746733 PMCID: PMC5043056 DOI: 10.3389/fphar.2016.00347] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 09/14/2016] [Indexed: 01/01/2023] Open
Abstract
Background: Telomerase activity (TA) is considered as the biomarker for cardiovascular aging and cardiovascular diseases (CVDs). Recent studies suggest a link between statins and telomere biology that may be explained by anti-inflammatory actions of statins and their positive effect on TA. Until now, this effect has not been investigated in prospective randomized studies. We hypothesized that 12 months of atorvastatin therapy increased TA in peripheral blood mononuclear cells. Methods: In a randomized, placebo-controlled study 100 hypercholesterolemic patients, aged 35-75 years, free of known CVDs and diabetes mellitus type 2 received 20 mg of atorvastatin daily or placebo for 12 months. TA was measured by quantitative polymerase chain reaction. Results: At study end, 82 patients had sufficient peripheral blood mononuclear cells needed for longitudinal analysis. TA expressed as natural logarithms changed from 0.46 ± 0.05 to 0.68 ± 0.06 (p = 0.004) in the atorvastatin group and from 0.67 ± 0.06 to 0.60 ± 0.07 (p = 0.477) in the control group. In multiple regression analysis, atorvastatin therapy was the only independent predictor (p = 0.05) of the changes in TA independently of markers of chronic inflammation and oxidative stress. Atorvastatin therapy was associated with increases in interleukin-6 within the normal range and a tendency toward reduction in blood urea. Conclusion: These initial observations suggest atorvastatin can act as telomerase activator and potentially as effective geroprotector. Trial registration: The trial was registered in ISRCTN registry ISRCTN55050065.
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Affiliation(s)
- Irina D. Strazhesko
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
| | - Olga N. Tkacheva
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Dariga U. Akasheva
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
| | - Ekaterina N. Dudinskaya
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Ekaterina V. Plokhova
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Valentina S. Pykhtina
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Anna S. Kruglikova
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
| | - Natalia V. Kokshagina
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Natalia V. Sharashkina
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Mikhail V. Agaltsov
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
| | - Daria A. Kashtanova
- Department of Aging and Age-Associated Diseases Prevention, National Research Center for Preventive MedicineMoscow, Russia
- Russian Clinical Research Center for GerontologyMoscow, Russia
| | - Vladimir A. Vygodin
- Laboratory of Biostatistics, Department of Epidemiology of Chronic Non-Communicable Diseases, National Research Center for Preventive MedicineMoscow, Russia
| | - Irina N. Ozerova
- Department of Biochemical Markers of Chronic Non-Communicable Diseases Research, National Research Center for Preventive MedicineMoscow, Russia
| | | | - Daria Vasilkova
- Department of Chemistry, Lomonosov Moscow State UniversityMoscow, Russia
| | - Sergey A. Boytsov
- Department of Clinical Cardiology and Molecular Genetics, National Research Center for Preventive MedicineMoscow, Russia
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Kaeberlein M, Rabinovitch PS, Martin GM. Healthy aging: The ultimate preventative medicine. Science 2016; 350:1191-3. [PMID: 26785476 DOI: 10.1126/science.aad3267] [Citation(s) in RCA: 195] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Age is the greatest risk factor for nearly every major cause of mortality in developed nations. Despite this, most biomedical research focuses on individual disease processes without much consideration for the relationships between aging and disease. Recent discoveries in the field of geroscience, which aims to explain biological mechanisms of aging, have provided insights into molecular processes that underlie biological aging and, perhaps more importantly, potential interventions to delay aging and promote healthy longevity. Here we describe some of these advances, along with efforts to move geroscience from the bench to the clinic. We also propose that greater emphasis should be placed on research into basic aging processes, because interventions that slow aging will have a greater effect on quality of life compared with disease-specific approaches.
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Affiliation(s)
- Matt Kaeberlein
- Department of Pathology, University of Washington, Seattle, WA 98195, USA.
| | | | - George M Martin
- Department of Pathology, University of Washington, Seattle, WA 98195, USA. Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
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21
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Sletten S, Bourgeon S, Bårdsen BJ, Herzke D, Criscuolo F, Massemin S, Zahn S, Johnsen TV, Bustnes JO. Organohalogenated contaminants in white-tailed eagle (Haliaeetus albicilla) nestlings: An assessment of relationships to immunoglobulin levels, telomeres and oxidative stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 539:337-349. [PMID: 26367189 DOI: 10.1016/j.scitotenv.2015.08.123] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 08/21/2015] [Accepted: 08/21/2015] [Indexed: 05/04/2023]
Abstract
Biomagnifying organohalogenated compounds (OHCs) may have adverse effects on the health of birds, especially marine avian top predators that accumulate high OHC loads. Contaminants may impair the humoral immunity and also influence the antioxidant enzyme activity (i.e. oxidative stress). Moreover, physical conditions and oxidative stress during development may reduce telomere lengths, one of the main mechanisms explaining cell senescence. To examine the potential effects of environmental contaminants on physiological biomarkers of health, OHCs with different 'physicochemical' properties were related to immunoglobulin Y levels (IgY; humoral immunity), superoxide dismutase enzyme (SOD) activity in blood plasma, and telomere length (measured in red blood cells) in individual 7-8weeks old nestlings (n=35) of white-tailed eagles (Haliaeetus albicilla) in the Norwegian Sub-Arctic. Different organochlorines (OCs) and perfluoroalkylated substances (PFASs) were measured in blood plasma of nestlings, demonstrating higher concentrations of the emerging contaminants (PFASs), notably perfluorooctane sulfonate (PFOS), compared to legacy OCs. There were no relationships between the contaminant loads and plasma IgY levels. Moreover, differences between years were found for telomere lengths, but this was not related to contaminants and more likely a result of different developmental conditions. However, there were significant and negative relationships between the OC loadings and the SOD activity. This suggests that some legacy OCs challenge the antioxidant capacity in nestlings of white-tailed eagles.
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Affiliation(s)
- Silja Sletten
- Norwegian Institute for Nature Research, Fram Centre, N-9296 Tromsø, Norway; Faculty for Biosciences, Fisheries and Economy, The Arctic University of Norway, Brevika, 9037 Tromsø, Norway
| | - Sophie Bourgeon
- The Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway
| | | | - Dorte Herzke
- Norwegian Institute for Air Research, Fram Centre, NO-9296 Tromsø, Norway
| | - Francois Criscuolo
- Evolutionary Ecophysiology Team, Department of Ecology, Physiology and Ethology, Hubert Curien Pluridisciplinary Institute, Centre National de la Recherche Scientifique UMR 7178, University of Strasbourg, France
| | - Sylvie Massemin
- Evolutionary Ecophysiology Team, Department of Ecology, Physiology and Ethology, Hubert Curien Pluridisciplinary Institute, Centre National de la Recherche Scientifique UMR 7178, University of Strasbourg, France
| | - Sandrine Zahn
- Evolutionary Ecophysiology Team, Department of Ecology, Physiology and Ethology, Hubert Curien Pluridisciplinary Institute, Centre National de la Recherche Scientifique UMR 7178, University of Strasbourg, France
| | | | - Jan Ove Bustnes
- Norwegian Institute for Nature Research, Fram Centre, N-9296 Tromsø, Norway.
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22
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A combination of the telomerase inhibitor, BIBR1532, and paclitaxel synergistically inhibit cell proliferation in breast cancer cell lines. Target Oncol 2015; 10:565-73. [DOI: 10.1007/s11523-015-0364-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 03/05/2015] [Indexed: 10/23/2022]
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23
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Palgi Y, Shrira A, Zaslavsky O. Quality of life attenuates age-related decline in functional status of older adults. Qual Life Res 2015; 24:1835-43. [PMID: 25586070 DOI: 10.1007/s11136-015-0918-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
Abstract
PURPOSE In the present study, we aimed to examine the total and moderating effects of needs-satisfaction-driven quality-of-life (QoL) measure on age-related change in functional status. METHODS Participants in the Survey of Health and Retirement in Europe (N = 18,781 at Wave 1) completed a measure of QoL (CASP-12) at baseline and reported their functional status across subsequent three waves using activities of daily living (ADL), instrumental activities of daily living (IADL), and functional limitation indices. RESULTS Growth-curve model estimates revealed that aged individuals with lower QoL scores at baseline had a steeper increase in disability deficits accumulation and functional limitation progression than their counterparts with a higher sense of QoL. The effects were more pronounced in ADL and IADL disability scales in which QoL moderated both linear and quadratic age-related changes. CONCLUSIONS Higher QoL attenuates processes of functional decline in late adulthood. Practitioners may seek strategies for improving and enhancing patients' QoL, as its salutary effects diffuse beyond psychological experience and include long-term effects on physical functioning.
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Affiliation(s)
- Yuval Palgi
- Department of Gerontology, Faculty of Social Welfare and Health Sciences, The Center for Research and Study of Aging, University of Haifa, 199 Aba Khoushy Ave. Mount Carmel, 3498838, Haifa, Israel,
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24
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Grin Y, Admoni T, Priel E. Telomerase activity in the various regions of mouse brain: non-radioactive telomerase repeat amplification protocol (TRAP) assay. J Vis Exp 2014:e51865. [PMID: 25225832 DOI: 10.3791/51865] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Telomerase, a ribonucleoprotein, is responsible for maintaining the telomere length and therefore promoting genomic integrity, proliferation, and lifespan. In addition, telomerase protects the mitochondria from oxidative stress and confers resistance to apoptosis, suggesting its possible importance for the surviving of non-mitotic, highly active cells such as neurons. We previously demonstrated the ability of novel telomerase activators to increase telomerase activity and expression in the various mouse brain regions and to protect motor neurons cells from oxidative stress. These results strengthen the notion that telomerase is involved in the protection of neurons from various lesions. To underline the role of telomerase in the brain, we here compare the activity of telomerase in male and female mouse brain and its dependence on age. TRAP assay is a standard method for detecting telomerase activity in various tissues or cell lines. Here we demonstrate the analysis of telomerase activity in three regions of the mouse brain by non-denaturing protein extraction using CHAPS lysis buffer followed by modification of the standard TRAP assay. In this 2-step assay, endogenous telomerase elongates a specific telomerase substrate (TS primer) by adding TTAGGG 6 bp repeats (telomerase reaction). The telomerase reaction products are amplified by PCR reaction creating a DNA ladder of 6 bp increments. The analysis of the DNA ladder is made by 4.5% high resolution agarose gel electrophoresis followed by staining with highly sensitive nucleic acid stain. Compared to the traditional TRAP assay that utilize (32)P labeled radioactive dCTP's for DNA detection and polyacrylamide gel electrophoresis for resolving the DNA ladder, this protocol offers a non-toxic time saving TRAP assay for evaluating telomerase activity in the mouse brain, demonstrating the ability to detect differences in telomerase activity in the various female and male mouse brain region.
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Affiliation(s)
- Yossi Grin
- The Shraga Segal Department of Immunology, Microbiology & Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev
| | - Tamar Admoni
- The Shraga Segal Department of Immunology, Microbiology & Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev
| | - Esther Priel
- The Shraga Segal Department of Immunology, Microbiology & Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev;
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Bernardes de Jesus B, Blasco MA. Telomerase at the intersection of cancer and aging. Trends Genet 2013; 29:513-20. [PMID: 23876621 DOI: 10.1016/j.tig.2013.06.007] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 06/07/2013] [Accepted: 06/18/2013] [Indexed: 12/16/2022]
Abstract
Although cancer and aging have been studied as independent diseases, mounting evidence suggests that cancer is an aging-associated disease and that cancer and aging share many molecular pathways. In particular, recent studies validated telomerase activation as a potential therapeutic target for age-related diseases; in addition, abnormal telomerase expression and telomerase mutations have been associated with many different types of human tumor. Here, we revisit the connection between telomerase and cancer and aging in light of recent findings supporting a role for telomerase not only in telomere elongation, but also in metabolic fitness and Wnt activation. Understanding the physiological impact of telomerase regulation is fundamental given the therapeutic strategies that are being developed that involve telomerase modulation.
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Affiliation(s)
- Bruno Bernardes de Jesus
- Telomeres and Telomerase Group, Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO), Melchor Fernández Almagro 3, Madrid, E-28029, Spain
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Pyrimidine motif triple helix in the Kluyveromyces lactis telomerase RNA pseudoknot is essential for function in vivo. Proc Natl Acad Sci U S A 2013; 110:10970-5. [PMID: 23776224 DOI: 10.1073/pnas.1309590110] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Telomerase is a ribonucleoprotein complex that extends the 3' ends of linear chromosomes. The specialized telomerase reverse transcriptase requires a multidomain RNA (telomerase RNA, TER), which includes an integral RNA template and functionally important template-adjacent pseudoknot. The structure of the human TER pseudoknot revealed that the loops interact with the stems to form a triple helix shown to be important for activity in vitro. A similar triple helix has been predicted to form in diverse fungi TER pseudoknots. The solution NMR structure of the Kluyveromyces lactis pseudoknot, presented here, reveals that it contains a long pyrimidine motif triple helix with unexpected features that include three individual bulge nucleotides and a C(+)•G-C triple adjacent to a stem 2-loop 2 junction. Despite significant differences in sequence and base triples, the 3D shape of the human and K. lactis TER pseudoknots are remarkably similar. Analysis of the effects of nucleotide substitutions on cell growth and telomere lengths provides evidence that this conserved structure forms in endogenously assembled telomerase and is essential for telomerase function in vivo.
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Abstract
Three recent studies converged on a specific protein-protein interface between TPP1 and telomerase as being crucial for the regulation of both telomerase recruitment and processivity in mammalian cells. An equivalent interaction appears to exist in budding yeast, making this a nearly universal means of telomerase regulation.
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Affiliation(s)
- Neal F Lue
- Department of Microbiology and Immunology, W.R. Hearst Microbiology Research Center, Weill Medical College of Cornell University, New York, New York, USA.
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