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Du B, Liu B, Fang YK, Zheng JZ, Wu J, Tao FZ, Zhang MY, Zhang TJ. Shugan Tongluo Qiangjing recipe protects against varicocele of EVC rats through modulating sperm DNA damage, telomere expression and oxidative stress. Tissue Cell 2024; 89:102414. [PMID: 38865824 DOI: 10.1016/j.tice.2024.102414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 05/06/2024] [Accepted: 05/20/2024] [Indexed: 06/14/2024]
Abstract
Varicocele (VC) refers to expansion and tortuosity of spreading venous plexus in spermatic cord due to poor blood flow. This study aimed to investigate effects of Shugan Tongluo Qiangjing recipe (SGTL) on sperm DNA damage and oxidative stress in experimental VC (EVC) rats. EVC model was established by partial ligation of left renal vein. Spermatic vein diameter, testicular weight, sperm DNA fragmentation index (DFI) were evaluated. Telomere reverse transcriptase (TERT) expression, telomere gene transcription, and testicular tissue morphology were determined·H2O2, catalase, SOD, T-AOC were measured with colorimetry. SGTL significantly decreased spermatic vein diameter (P=0.000) and increased testicular weight (P=0.013) of rats compared those of EVC rats. SGTL maintained testicular tissue morphology in EVC rats. SGTL markedly reduced sperm DFI value in sperm of rats compared to EVC rats (P=0.000). SGTL significantly enhanced TERT expression and telomere gene transcription (P=0.028) in testis of rats compared to EVC rats. SGTL reduced H2O2 levels (P=0.001) and promoted CAT activity (P=0.016), SOD activity (P=0.049), and T-AOC activity (P=0.047) of rats, compared to EVC rats. In conclusion, SGTL could reduce pathogenic process of EVC by reducing sperm DNA damage and regulating telomere length in EVC rats, which may be related to oxidative stress regulation.
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Affiliation(s)
- Baoxin Du
- Department of Gynecology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Bing Liu
- Department of Andrology, Xuzhou Hospital Affiliated to Nanjing University of Chinese Medicine, Xuzhou, China
| | - Yue-Kun Fang
- Andrology Department, Wenzhou City Hospital of traditional Chinese medicine and Western medicine combined, Wenzhou, China
| | - Jun-Zhuang Zheng
- Andrology Department, Cixi integrated Traditional Chinese and Western Medicine Medical & Health Group, Cixi, China
| | - Jun Wu
- Andrology Department, Ningbo Hospital of Traditional Chinese Medicine, Ningbo, China
| | - Fang-Ze Tao
- Department of Urology Surgery, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Ming-Yang Zhang
- College of Traditional Chinese Medicine of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Tai-Jun Zhang
- Department of Nephrology, Chongqing Hospital of Traditional Chinese Medicine, China.
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2
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Zhao S, Li J, Duan S, Liu C, Wang H, Lu J, Zhao N, Sheng X, Wu Y, Li Y, Sun B, Liu L. UBQLN1 links proteostasis and mitochondria function to telomere maintenance in human embryonic stem cells. Stem Cell Res Ther 2024; 15:180. [PMID: 38902824 PMCID: PMC11191273 DOI: 10.1186/s13287-024-03789-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 06/09/2024] [Indexed: 06/22/2024] Open
Abstract
BACKGROUND Telomeres consist of repetitive DNA sequences at the chromosome ends to protect chromosomal stability, and primarily maintained by telomerase or occasionally by alternative telomere lengthening of telomeres (ALT) through recombination-based mechanisms. Additional mechanisms that may regulate telomere maintenance remain to be explored. Simultaneous measurement of telomere length and transcriptome in the same human embryonic stem cell (hESC) revealed that mRNA expression levels of UBQLN1 exhibit linear relationship with telomere length. METHODS In this study, we first generated UBQLN1-deficient hESCs and compared with the wild-type (WT) hESCs the telomere length and molecular change at RNA and protein level by RNA-seq and proteomics. Then we identified the potential interacting proteins with UBQLN1 using immunoprecipitation-mass spectrometry (IP-MS). Furthermore, the potential mechanisms underlying the shortened telomeres in UBQLN1-deficient hESCs were analyzed. RESULTS We show that Ubiquilin1 (UBQLN1) is critical for telomere maintenance in human embryonic stem cells (hESCs) via promoting mitochondrial function. UBQLN1 deficiency leads to oxidative stress, loss of proteostasis, mitochondria dysfunction, DNA damage, and telomere attrition. Reducing oxidative damage and promoting mitochondria function by culture under hypoxia condition or supplementation with N-acetylcysteine partly attenuate the telomere attrition induced by UBQLN1 deficiency. Moreover, UBQLN1 deficiency/telomere shortening downregulates genes for neuro-ectoderm lineage differentiation. CONCLUSIONS Altogether, UBQLN1 functions to scavenge ubiquitinated proteins, preventing their overloading mitochondria and elevated mitophagy. UBQLN1 maintains mitochondria and telomeres by regulating proteostasis and plays critical role in neuro-ectoderm differentiation.
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Affiliation(s)
- Shuang Zhao
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Jie Li
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Songqi Duan
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Chang Liu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Hua Wang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Jiangtao Lu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Nannan Zhao
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Xiaoyan Sheng
- Experimental Animal Center, Nankai University, Tianjin, 300350, China
| | - Yiwei Wu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Yanjun Li
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Baofa Sun
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Lin Liu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China.
- Frontiers Science Center for Cell Responses, College of Life Science, Nankai University, Tianjin, 300071, China.
- Experimental Animal Center, Nankai University, Tianjin, 300350, China.
- Tianjin Union Medical Center, Nankai University, Tianjin, 300071, China.
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3
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Alarabi M, Pan Z, Romero-Gómez M, George J, Eslam M. Telomere length and mortality in lean MAFLD: the other face of metabolic adaptation. Hepatol Int 2024:10.1007/s12072-024-10701-6. [PMID: 38900410 DOI: 10.1007/s12072-024-10701-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024]
Abstract
BACKGROUND AND AIMS Healthy weight (lean) patients with metabolic dysfunction-associated fatty liver disease (MAFLD) have a more favorable metabolic and histological profile in cross-sectional studies compared with their non-lean counterparts. Paradoxically, they also have higher overall mortality. The underpinning pathophysiology of this paradox is not understood. Telomere attrition is associated with increased mortality in various diseases. METHODS We investigated the role of telomere length in the pathogenesis of lean MAFLD in cohorts with biopsy-proven MAFLD (n = 303). We measured serum malondialdehyde (MDA) levels and hepatic 8-hydroxydeoxyguanosine (8-OHdG) and 4-hydroxy-2-nonenal (4-HNE) expression (reactive oxygen species (ROS) markers), growth/differentiation factor-15 (GDF-15) and tested the effect of H2O2 on telomere length and activity in hepatocyte cell lines. The association between leukocyte telomere length and mortality was examined. RESULTS Telomere length was significantly lower in patients with lean MAFLD (p < 0.001). They also demonstrated an increase in ROS levels and decreases in GDF-15. H2O2 induced telomere shortening and reducing telomere activity in hepatocyte cell lines. We subsequently confirmed that telomere length shortening at baseline is associated with increased hazards of all-cause mortality; the deleterious effect was more profound in lean people. CONCLUSION Differences in telomere length in part explain the increased mortality of lean compared to non-lean patients with MAFLD. The effect is in part mediated through ROS activation and provide opportunities for therapy.
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Affiliation(s)
- Mohammad Alarabi
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Westmead, Sydney, 2145 NSW, Australia
| | - Ziyan Pan
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Westmead, Sydney, 2145 NSW, Australia
| | - Manuel Romero-Gómez
- Digestive Diseases Unit, Hospital Universitario Virgen del Rocío, Seville, Spain
| | - Jacob George
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Westmead, Sydney, 2145 NSW, Australia
| | - Mohammed Eslam
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Westmead, Sydney, 2145 NSW, Australia.
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4
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Ba Y, Shen L, Peng X, Zhang Y, Wang J. Elucidating causal relationships of diet-derived circulating antioxidants and the risk of non-scarring alopecia: A Mendelian randomization study. Medicine (Baltimore) 2024; 103:e38426. [PMID: 38875426 PMCID: PMC11175974 DOI: 10.1097/md.0000000000038426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/16/2024] Open
Abstract
Previous observational studies revealed controversy about the effect of circulating antioxidants on risk of alopecia. In the present study, we investigated the causal relationships between diet-derived circulating antioxidants and 2 non-scarring alopecia using Mendelian randomization (MR). Instrumental variables for antioxidants (lycopene, retinol, ascorbate, β-carotene, α-tocopherol, and γ-tocopherol) were selected from published studies. Data for alopecia areata (AA) and androgenetic alopecia (AGA) was obtained from the FinnGen study project (R9 released in 2023), including 195 cases and 201,019 controls for AGA and 682 cases and 361,140 controls for AA. We used the inverse variance weighted method as the primary MR method. Three additional methods were used as sensitivity analysis to validate the robustness of the results. We found a causal relationship between absolute β-carotene levels and AGA risk (P = .039), but not with AA (P = .283). The results of Wald ratio showed a protective effect of absolute β-carotene levels against AGA, with per 0.1 ln-transformed β-carotene being associated with a 76% lower risk of AGA (OR: 0.24, 95% CI: 0.06-0.93). Based on the fixed effects inverse variance weighting results, we found that α-tocopherol was protective against both AGA (P = .026) and AA (P = .018). For each unit increase in α-tocopherol, the effects of change in AGA and AA were 0.02 (95% CI: 0.00-0.61) and 0.10 (95% CI: 0.01-0.67), respectively. The results did not reveal any other causal relationships. Our study identified 3 causal associations of antioxidants with the risk of non-scarring alopecia. These results provide new insights into the prevention of non-scarring alopecia through diet.
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Affiliation(s)
- Yuchen Ba
- The Second Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Lele Shen
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Xiangning Peng
- The Second Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Yujin Zhang
- The Second Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Junwen Wang
- The Second Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
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5
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Vaurs M, Dolu EB, Decottignies A. Mitochondria and telomeres: hand in glove. Biogerontology 2024; 25:289-300. [PMID: 37864609 DOI: 10.1007/s10522-023-10074-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 10/04/2023] [Indexed: 10/23/2023]
Abstract
Born as an endosymbiont, the bacteria engulfed by the proto-eukaryotic cell more than 1.45 billion years ago progressively evolved as an important organelle with multiple interactions with the host cell. In particular, strong connections between mitochondria and the chromosome ends, the telomeres, led to propose a new theory of ageing in which dysfunctional telomeres and mitochondria are the main actors of a vicious circle reducing cell fitness and promoting cellular ageing. We review the evidences that oxidative stress and dysfunctional mitochondria damage telomeres and further discuss the interrelationship between telomere biology and mitochondria through the lens of telomerase which shuttles between the nucleus and mitochondria. Finally, we elaborate on the possible role of the mitochondrial genome on the inheritance of human telomere length through the expression of mitochondrial gene variants.
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Affiliation(s)
- Mélina Vaurs
- de Duve Institute, UCLouvain, Avenue Hippocrate, 1200, Brussels, Belgium.
| | - Elif Beyza Dolu
- de Duve Institute, UCLouvain, Avenue Hippocrate, 1200, Brussels, Belgium
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6
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Barcenilla BB, Kundel I, Hall E, Hilty N, Ulianich P, Cook J, Turley J, Yerram M, Min JH, Castillo-González C, Shippen DE. Telomere dynamics and oxidative stress in Arabidopsis grown in lunar regolith simulant. FRONTIERS IN PLANT SCIENCE 2024; 15:1351613. [PMID: 38434436 PMCID: PMC10908177 DOI: 10.3389/fpls.2024.1351613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/22/2024] [Indexed: 03/05/2024]
Abstract
NASA envisions a future where humans establish a thriving colony on the Moon by 2050. Plants will be essential for this endeavor, but little is known about their adaptation to extraterrestrial bodies. The capacity to grow plants in lunar regolith would represent a major step towards this goal by minimizing the reliance on resources transported from Earth. Recent studies reveal that Arabidopsis thaliana can germinate and grow on genuine lunar regolith as well as on lunar regolith simulant. However, plants arrest in vegetative development and activate a variety of stress response pathways, most notably the oxidative stress response. Telomeres are hotspots for oxidative damage in the genome and a marker of fitness in many organisms. Here we examine A. thaliana growth on a lunar regolith simulant and the impact of this resource on plant physiology and on telomere dynamics, telomerase enzyme activity and genome oxidation. We report that plants successfully set seed and generate a viable second plant generation if the lunar regolith simulant is pre-washed with an antioxidant cocktail. However, plants sustain a higher degree of genome oxidation and decreased biomass relative to conventional Earth soil cultivation. Moreover, telomerase activity substantially declines and telomeres shorten in plants grown in lunar regolith simulant, implying that genome integrity may not be sustainable over the long-term. Overcoming these challenges will be an important goal in ensuring success on the lunar frontier.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Dorothy E. Shippen
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, United States
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7
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Dhillon VS, Shahid M, Deo P, Fenech M. Reduced SIRT1 and SIRT3 and Lower Antioxidant Capacity of Seminal Plasma Is Associated with Shorter Sperm Telomere Length in Oligospermic Men. Int J Mol Sci 2024; 25:718. [PMID: 38255792 PMCID: PMC10815409 DOI: 10.3390/ijms25020718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
Infertility affects millions of couples worldwide and has a profound impact not only on their families, but also on communities. Telomere attrition has been associated with infertility, DNA damage and fragmentation. Oxidative stress has been shown to affect sperm DNA integrity and telomere length. Sirtuins such as SIRT1 and SIRT3 are involved in aging and oxidative stress response. The aim of the present study is to determine the role of SIRT1 and SIRT3 in regulating oxidative stress, telomere shortening, and their association with oligospermia. Therefore, we assessed the protein levels of SIRT1 and SIRT3, total antioxidant capacity (TAC), superoxide dismutase (SOD), malondialdehyde (MDA) and catalase activity (CAT) in the seminal plasma of 272 patients with oligospermia and 251 fertile men. We also measured sperm telomere length (STL) and leukocyte telomere length (LTL) using a standard real-time quantitative PCR assay. Sperm chromatin and protamine deficiency were also measured as per standard methods. Our results for oligospermic patients demonstrate significant reductions in semen parameters, shorter STL and LTL, lower levels of SOD, TAC, CAT, SIRT1 and SIRT3 levels, and also significant protamine deficiency and higher levels of MDA and DNA fragmentation. We conclude that a shorter TL in sperms and leukocytes is associated with increased oxidative stress that also accounts for high levels of DNA fragmentation in sperms. Our results support the hypothesis that various sperm parameters in the state of oligospermia are associated with or caused by reduced levels of SIRT1 and SIRT3 proteins.
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Affiliation(s)
- Varinderpal S. Dhillon
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (P.D.); (M.F.)
| | - Mohammad Shahid
- Department of Basic Medical Sciences, College of Medicine, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Permal Deo
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (P.D.); (M.F.)
| | - Michael Fenech
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (P.D.); (M.F.)
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8
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Qin B. Can Antidiabetic Medications Affect Telomere Length in Patients with Type 2 Diabetes? A Mini-Review. Diabetes Metab Syndr Obes 2023; 16:3739-3750. [PMID: 38028989 PMCID: PMC10676684 DOI: 10.2147/dmso.s428560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 10/07/2023] [Indexed: 12/01/2023] Open
Abstract
The fight against aging is an eternal pursuit of humankind. The aging rate of patients with type 2 diabetes mellitus (T2DM) is higher than that of healthy individuals. Reducing the aging rate of patients with T2DM and extending their life expectancy are challenges that endocrinologists are eager to overcome. Many studies have shown that antidiabetic medications have potent anti-aging potential. Telomeres are repetitive DNA sequences located at the ends of chromosomes, and telomere shortening is a hallmark of aging. This review summarizes clinical trials that have explored the association between antidiabetic medications and telomere length (TL) in patients with T2DM and explore the mystery of delaying aging in patients with T2DM from the perspective of telomeres. Various antidiabetic medications may have different effects on TL in patients with T2DM. Metformin and sitagliptin may protect telomeres in patients with T2DM, while exogenous insulin may promote telomere shortening in patients with T2DM. The effect of acarbose and glyburide on TL in patients with T2DM is still uncertain due to the absence of evidence from longitudinal studies.
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Affiliation(s)
- Baoding Qin
- Department of Endocrinology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, People’s Republic of China
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9
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Gold NM, Okeke MN, He Y. Involvement of Inheritance in Determining Telomere Length beyond Environmental and Lifestyle Factors. Aging Dis 2023:AD.2023.1023. [PMID: 37962459 DOI: 10.14336/ad.2023.1023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
All linear chromosomal ends have specific DNA-protein complexes called telomeres. Telomeres serve as a "molecular clock" to estimate the potential length of cell replication. Shortening of telomere length (TL) is associated with cellular senescence, aging, and various age-related diseases in humans. Here we reviewed the structure, function, and regulation of telomeres and the age-related diseases associated with telomere attrition. Among the various determinants of TL, we highlight the connection between TL and heredity to provide a new overview of genetic determinants for TL. Studies across multiple species have shown that maternal and paternal TL influence the TL of their offspring, and this may affect life span and their susceptibility to age-related diseases. Hence, we reviewed the linkage between TL and parental influences and the proposed mechanisms involved. More in-depth studies on the genetic mechanism for TL attrition are needed due to the potential application of this knowledge in human medicine to prevent premature frailty at its earliest stage, as well as promote health and longevity.
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Affiliation(s)
- Naheemat Modupeola Gold
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- State Key Laboratory of Genetic, Evolution and Animal Models, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Michael Ngozi Okeke
- University of Chinese Academy of Sciences, Beijing 100049, China
- Center for Nanomedical Technology Research, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yonghan He
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- State Key Laboratory of Genetic, Evolution and Animal Models, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Medoro A, Saso L, Scapagnini G, Davinelli S. NRF2 signaling pathway and telomere length in aging and age-related diseases. Mol Cell Biochem 2023:10.1007/s11010-023-04878-x. [PMID: 37917279 DOI: 10.1007/s11010-023-04878-x] [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: 08/19/2023] [Accepted: 10/07/2023] [Indexed: 11/04/2023]
Abstract
The transcription factor nuclear factor erythroid 2-related factor 2 (NRF2) is well recognized as a critical regulator of redox, metabolic, and protein homeostasis, as well as the regulation of inflammation. An age-associated decline in NRF2 activity may allow oxidative stress to remain unmitigated and affect key features associated with the aging phenotype, including telomere shortening. Telomeres, the protective caps of eukaryotic chromosomes, are highly susceptible to oxidative DNA damage, which can accelerate telomere shortening and, consequently, lead to premature senescence and genomic instability. In this review, we explore how the dysregulation of NRF2, coupled with an increase in oxidative stress, might be a major determinant of telomere shortening and age-related diseases. We discuss the relevance of the connection between NRF2 deficiency in aging and telomere attrition, emphasizing the importance of studying this functional link to enhance our understanding of aging pathologies. Finally, we present a number of compounds that possess the ability to restore NRF2 function, maintain a proper redox balance, and preserve telomere length during aging.
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Affiliation(s)
- Alessandro Medoro
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Via F. De Sanctis, s.n.c., 86100, Campobasso, Italy
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Rome, Italy
| | - Giovanni Scapagnini
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Via F. De Sanctis, s.n.c., 86100, Campobasso, Italy
| | - Sergio Davinelli
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Via F. De Sanctis, s.n.c., 86100, Campobasso, Italy.
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11
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Madaeva IM, Kurashova NA, Berdina ON, Titova ES, Kolesnikov SI, Kolesnikova LI. The State of the LPO-AOD System and the Relative Length of Telomeric Repeats in the Chromosomes of Blood Leukocytes in Obstructive Sleep Apnea Syndrome. Bull Exp Biol Med 2023; 176:30-33. [PMID: 38091136 DOI: 10.1007/s10517-023-05961-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Indexed: 12/19/2023]
Abstract
We analyzed the relative length of telomeric repeats in peripheral blood leukocytes and indicators of oxidative stress in 32 men (mean age 51.2±3.1 years) with obstructive sleep apnea syndrome (OSAS). The control group consisted of volunteers without OSAS. The relative length of telomeres was determined in a DNA sample isolated from venous whole blood samples. The length of telomeric repeats of chromosomes was determined using quantitative real-time PCR (3 times for each DNA sample); albumin served as an internal control. The intensity of LPO processes and antioxidant protection was assessed by conventional spectrophotometric methods. It was found that in patients with OSAS, the relative length of telomeric repeats was lower by 48%, the levels of substrates and products of LPO were higher (double bonds and diene conjugates by 34 and 19%, respectively), and antioxidant protection indicators were lower (concentrations of fat-soluble vitamins α-tocopherol and retinol by 18 and 19.3%, respectively, total antioxidant activity by 32.9%) than in volunteers of the control group. Thus, we can conclude that the nucleotide sequences are reduced in patients with OSAS under conditions of intensified free radical oxidation.
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Affiliation(s)
- I M Madaeva
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| | - N A Kurashova
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia.
| | - O N Berdina
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| | - E S Titova
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| | - S I Kolesnikov
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
| | - L I Kolesnikova
- Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia
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12
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Romero-Haro AA, Figuerola J, Alonso-Alvarez C. Low Antioxidant Glutathione Levels Lead to Longer Telomeres: A Sex-Specific Link to Longevity? Integr Org Biol 2023; 5:obad034. [PMID: 37753451 PMCID: PMC10519275 DOI: 10.1093/iob/obad034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 06/22/2023] [Accepted: 08/29/2023] [Indexed: 09/28/2023] Open
Abstract
Telomeres are repetitive DNA sequences at the end of chromosomes that protect them from degradation. They have been the focus of intense research because short telomeres would predict accelerated ageing and reduced longevity in vertebrates. Oxidative stress is considered a physiological driver of the telomere shortening and, consequently, short lifespan. Among molecules fighting against oxidative stress, glutathione is involved in many antioxidant pathways. Literature supports that oxidative stress may trigger a compensatory "hormetic" response increasing glutathione levels and telomere length. Here, we tested the link between total glutathione concentration and telomere length in captive birds (zebra finches; Taeniopygia guttata). Total glutathione levels were experimentally decreased during birds' growth using a specific inhibitor of glutathione synthesis (buthionine sulfoximine; BSO). We monitored the birds' reproductive performance in an outdoor aviary during the first month of life, and their longevity for almost 9 years. Among control individuals, erythrocyte glutathione levels during development positively predicted erythrocyte telomere length in adulthood. However, BSO-treated females, but not males, showed longer telomeres than control females in adulthood. This counterintuitive finding suggests that females mounted a compensatory response. Such compensation agrees with precedent findings in the same population where the BSO treatment increased growth and adult body mass in females but not males. BSO did not influence longevity or reproductive output in any sex. However, early glutathione levels and adult telomere length interactively predicted longevity only among control females. Those females with "naturally" low (non-manipulated) glutathione levels at the nestling age but capable of producing longer telomeres in adulthood seem to live longer. The results suggest that the capability to mount a hormetic response triggered by low early glutathione levels can improve fitness via telomere length. Overall, the results may indicate a sex-specific link between glutathione and telomere values. Telomerase activity and sexual steroids (estrogens) are good candidates to explain the sex-biased mechanism underlying the early-life impact of oxidative stress on adult telomere length.
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Affiliation(s)
- A A Romero-Haro
- Instituto de Investigación en Recursos Cinegéticos (IREC), CSIC-UCLM-JCCM, Ronda de Toledo 12, 13071Ciudad Real, 41092 Sevilla, Spain
| | - J Figuerola
- Estación Biológica de Doñana—CSIC, Sevilla, 28029 Madrid, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - C Alonso-Alvarez
- Evolutionary Ecology Department, National Museum of Natural Sciences (MNCN-CSIC), C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
- Instituto Pirenaico de Ecología (IPE-CSIC) Avda. Nuestra Señora de la Victoria, 16. 22700 Jaca, Huesca, Spain
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13
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Pizzuti V, Paris F, Marrazzo P, Bonsi L, Alviano F. Mitigating Oxidative Stress in Perinatal Cells: A Critical Step toward an Optimal Therapeutic Use in Regenerative Medicine. Biomolecules 2023; 13:971. [PMID: 37371551 DOI: 10.3390/biom13060971] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Oxidative stress (OS) occurs when the production of reactive oxygen species (ROS) is not balanced by the body's antioxidant defense system. OS can profoundly affect cellular health and function. ROS can have a profound negative impact on cells that undergo a predestined and time-regulated process of proliferation or differentiation, such as perinatal stem cells. Due to the large-scale employment of these immunotolerant stem cells in regenerative medicine, it is important to reduce OS to prevent them from losing function and increase their application in the regenerative medicine field. This goal can be achieved through a variety of strategies, such as the use of antioxidants and other compounds that can indirectly modulate the antioxidant defense system by enhancing cellular stress response pathways, including autophagy and mitochondrial function, thereby reducing ROS levels. This review aims to summarize information regarding OS mechanisms in perinatal stem cells and possible strategies for reducing their deleterious effects.
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Affiliation(s)
- Valeria Pizzuti
- Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Francesca Paris
- Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Pasquale Marrazzo
- Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Laura Bonsi
- Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Francesco Alviano
- Department of Biomedical and Neuromotor Science, University of Bologna, 40126 Bologna, Italy
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14
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Nousis L, Kanavaros P, Barbouti A. Oxidative Stress-Induced Cellular Senescence: Is Labile Iron the Connecting Link? Antioxidants (Basel) 2023; 12:1250. [PMID: 37371980 DOI: 10.3390/antiox12061250] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Cellular senescence, a cell state characterized by a generally irreversible cell cycle arrest, is implicated in various physiological processes and a wide range of age-related pathologies. Oxidative stress, a condition caused by an imbalance between the production and the elimination of reactive oxygen species (ROS) in cells and tissues, is a common driver of cellular senescence. ROS encompass free radicals and other molecules formed as byproducts of oxygen metabolism, which exhibit varying chemical reactivity. A prerequisite for the generation of strong oxidizing ROS that can damage macromolecules and impair cellular function is the availability of labile (redox-active) iron, which catalyzes the formation of highly reactive free radicals. Targeting labile iron has been proven an effective strategy to counteract the adverse effects of ROS, but evidence concerning cellular senescence is sparse. In the present review article, we discuss aspects of oxidative stress-induced cellular senescence, with special attention to the potential implication of labile iron.
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Affiliation(s)
- Lambros Nousis
- Department of Hygiene and Epidemiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Panagiotis Kanavaros
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Alexandra Barbouti
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
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15
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Chieffi Baccari G, Iurato G, Santillo A, Dale B. Male Germ Cell Telomeres and Chemical Pollutants. Biomolecules 2023; 13:biom13050745. [PMID: 37238614 DOI: 10.3390/biom13050745] [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: 03/23/2023] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
In recent decades, male infertility has been correlated with the shortening of sperm telomeres. Telomeres regulate the reproductive lifespan by mediating the synapsis and homologous recombination of chromosomes during gametogenesis. They are composed of thousands of hexanucleotide DNA repeats (TTAGGG) that are coupled to specialized shelterin complex proteins and non-coding RNAs. Telomerase activity in male germ cells ensures that the telomere length is maintained at maximum levels during spermatogenesis, despite telomere shortening due to DNA replication or other genotoxic factors such as environmental pollutants. An emerging body of evidence has associated an exposure to pollutants with male infertility. Although telomeric DNA may be one of the important targets of environmental pollutants, only a few authors have considered it as a conventional parameter for sperm function. The aim of this review is to provide comprehensive and up-to-date data on the research carried out so far on the structure/function of telomeres in spermatogenesis and the influence of environmental pollutants on their functionality. The link between pollutant-induced oxidative stress and telomere length in germ cells is discussed.
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Affiliation(s)
- Gabriella Chieffi Baccari
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | | | - Alessandra Santillo
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | - Brian Dale
- Centro Fecondazione Assistita (CFA-Italia), 80127 Napoli, Italy
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16
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Gillard M, Bonnet H, Lartia R, Yacoub H, Dejeu J, Defrancq E, Elias B. Luminescent Ruthenium(II) Complexes Used for the Detection of 8-Oxoguanine in the Human Telomeric Sequence. Bioconjug Chem 2023; 34:414-421. [PMID: 36689988 DOI: 10.1021/acs.bioconjchem.2c00578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Detecting cancer at the early stage of the disease is crucial to keep the best chance for successful treatment. The recent development of genomic screening, a methodology that is addressed to asymptomatic patients presumably at risk of carcinogenesis, has stimulated the quest for new tools able to signal the level of risk. Carcinogenesis has been associated to chronic oxidative stress exceeding the antioxidant defenses and leading to critical genome alteration levels. The telomeric regions are presumably the most exposed to oxidative stress due to their high concentration of guanine (i.e., the easiest oxidizable nucleic base). Accumulation of 8-oxoguanine in telomeres, thus oxidative lesions, was reportedly associated with telomeric crisis and carcinogenesis. In this study, we report on the capacity of Ru(II) polyazaaromatic complexes to photoprobe 8-oxoguanine into the human telomeric sequence with the view of developing new tools for cancer risk screening.
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Affiliation(s)
- Martin Gillard
- Molecular Chemistry, Materials and Catalysis (MOST), Université catholique de Louvain (UCLouvain), Institut de la Matière Condensée et des Nanosciences (IMCN), Place Louis Pasteur 1, bte L4.01.02, B-1348 Louvain-la-Neuve, Belgium
| | - Hugues Bonnet
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Rémy Lartia
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Hiba Yacoub
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Jérôme Dejeu
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France.,CNRS UMR-6174, FEMTO-ST Institute, Université de Bourgogne Franche-Comté, F-25000 Besançon, France
| | - Eric Defrancq
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Benjamin Elias
- Molecular Chemistry, Materials and Catalysis (MOST), Université catholique de Louvain (UCLouvain), Institut de la Matière Condensée et des Nanosciences (IMCN), Place Louis Pasteur 1, bte L4.01.02, B-1348 Louvain-la-Neuve, Belgium
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17
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He H, Chen X, Miao D, Zhang H, Wang Y, He X, Chen X, Dai N. Composite Dietary Antioxidant Index and Plasma Levels of Soluble Klotho: Insights from NHANES. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:3524611. [PMID: 36798687 PMCID: PMC9928515 DOI: 10.1155/2023/3524611] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/10/2022] [Accepted: 11/24/2022] [Indexed: 02/10/2023]
Abstract
Objectives The association between dietary antioxidants and soluble Klotho (S-Klotho) levels remains unknown. We investigated to explore whether the composite dietary antioxidant index (CDAI) was associated with serum levels of S-Klotho in the middle-aged population. Methods Eligible participants were identified from the National Health and Nutrition Examination Surveys (NHANES) from 2007 until 2016. The CDAI was calculated from the intake of six dietary antioxidants. The serum levels of S-Klotho were measured via enzyme-linked immunosorbent assay (ELISA). Generalized linear and nonlinear models were established to analyze the relationship between CDAI and S-Klotho levels. Results Based on the S-Klotho quartiles, S-Klotho levels were higher in young women, Blacks, higher education, never smokers, lower waistlines, no medication use, and those with higher CDAI. Univariate analysis revealed that age, gender, race, smoking status, body mass index, waistline, and medication use were associated with serum levels of S-Klotho. When potential confounders were controlled, CDAI was significantly associated with S-Klotho levels. Subgroup analysis also revealed that this association remained significant in individuals who had the highest quartiles of CDAI, aged population (>60 years), male, and never smoker. A nonlinear relationship was observed between the CDAI and S-Klotho plasma concentrations. Conclusion CDAI was positively correlated with plasma levels of S-Klotho after controlling for covariates. Further studies are needed to validate the current findings and explore the fundamental mechanisms.
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Affiliation(s)
- Huiqin He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Xin Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Da Miao
- Department of Endoscopy Center, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Hongxia Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Yu Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Xingkang He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Xiaoli Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
| | - Ning Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University Medical School, Hangzhou 310016, China
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18
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Moustakli E, Zikopoulos A, Sakaloglou P, Bouba I, Sofikitis N, Georgiou I. Functional association between telomeres, oxidation and mitochondria. FRONTIERS IN REPRODUCTIVE HEALTH 2023; 5:1107215. [PMID: 36890798 PMCID: PMC9986632 DOI: 10.3389/frph.2023.1107215] [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: 11/24/2022] [Accepted: 01/31/2023] [Indexed: 02/22/2023] Open
Abstract
Prior research has substantiated the vital role of telomeres in human fertility. Telomeres are prerequisites for maintaining the integrity of chromosomes by preventing the loss of genetic material following replication events. Little is known about the association between sperm telomere length and mitochondrial capacity involving its structure and functions. Mitochondria are structurally and functionally distinct organelles that are located on the spermatozoon's midpiece. Mitochondria produce adenosine triphosphate (ATP) through oxidative phosphorylation (OXPHOS), which is necessary for sperm motility and generate reactive oxygen species (ROS). While a moderate concentration of ROS is critical for egg-sperm fusion, and fertilization, excessive ROS generation is primarily related to telomere shortening, sperm DNA fragmentation, and alterations in the methylation pattern leading to male infertility. This review aims to highlight the functional connection between mitochondria biogenesis and telomere length in male infertility, as mitochondrial lesions have a damaging impact on telomere length, leading both to telomere lengthening and reprogramming of mitochondrial biosynthesis. Furthermore, it aims to shed light on how both inositol and antioxidants can positively affect male fertility.
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Affiliation(s)
- Efthalia Moustakli
- Laboratory of Medical Genetics, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | | | - Prodromos Sakaloglou
- Laboratory of Medical Genetics, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Ioanna Bouba
- Laboratory of Medical Genetics, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Nikolaos Sofikitis
- Department of Urology, Ioannina University School of Medicine, Ioannina, Greece
| | - Ioannis Georgiou
- Laboratory of Medical Genetics, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
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19
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Yi W, Chen F, Zhang H, Tang P, Yuan M, Wen J, Wang S, Cai Z. Role of angiotensin II in aging. Front Aging Neurosci 2022; 14:1002138. [PMID: 36533172 PMCID: PMC9755866 DOI: 10.3389/fnagi.2022.1002138] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 11/08/2022] [Indexed: 10/29/2023] Open
Abstract
Aging is an inevitable progressive decline in physiological organ function that increases the chance of disease and death. The renin-angiotensin system (RAS) is involved in the regulation of vasoconstriction, fluid homeostasis, cell growth, fibrosis, inflammation, and oxidative stress. In recent years, unprecedented advancement has been made in the RAS study, particularly with the observation that angiotensin II (Ang II), the central product of the RAS, plays a significant role in aging and chronic disease burden with aging. Binding to its receptors (Ang II type 1 receptor - AT1R in particular), Ang II acts as a mediator in the aging process by increasing free radical production and, consequently, mitochondrial dysfunction and telomere attrition. In this review, we examine the physiological function of the RAS and reactive oxygen species (ROS) sources in detail, highlighting how Ang II amplifies or drives mitochondrial dysfunction and telomere attrition underlying each hallmark of aging and contributes to the development of aging and age-linked diseases. Accordingly, the Ang II/AT1R pathway opens a new preventive and therapeutic direction for delaying aging and reducing the incidence of age-related diseases in the future.
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Affiliation(s)
- Wenmin Yi
- Department of Neurology, Chongqing Medical University, Chongqing, China
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Department of Neurology, Chongqing General Hospital, Chongqing, China
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, China
| | - Fei Chen
- Department of Neurology, Chongqing Medical University, Chongqing, China
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Department of Neurology, Chongqing General Hospital, Chongqing, China
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, China
| | - Huiji Zhang
- Department of Neurology, Chongqing Medical University, Chongqing, China
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Department of Neurology, Chongqing General Hospital, Chongqing, China
| | - Peng Tang
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
| | - Minghao Yuan
- Department of Neurology, Chongqing Medical University, Chongqing, China
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Department of Neurology, Chongqing General Hospital, Chongqing, China
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, China
| | - Jie Wen
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, China
- Department and Institute of Neurology, Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Shengyuan Wang
- Department of Neurology, Chongqing Medical University, Chongqing, China
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Department of Neurology, Chongqing General Hospital, Chongqing, China
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, China
| | - Zhiyou Cai
- Department of Neurology, Chongqing Medical University, Chongqing, China
- Chongqing Institute Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Department of Neurology, Chongqing General Hospital, Chongqing, China
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, China
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20
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Friesen CR, Wapstra E, Olsson M. Of telomeres and temperature: Measuring thermal effects on telomeres in ectothermic animals. Mol Ecol 2022; 31:6069-6086. [PMID: 34448287 DOI: 10.1111/mec.16154] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/20/2021] [Accepted: 08/23/2021] [Indexed: 01/31/2023]
Abstract
Ectotherms are classic models for understanding life-history tradeoffs, including the reproduction-somatic maintenance tradeoffs that may be reflected in telomere length and their dynamics. Importantly, life-history traits of ectotherms are tightly linked to their thermal environment, with diverse or synergistic mechanistic explanations underpinning the variation. Telomere dynamics potentially provide a mechanistic link that can be used to monitor thermal effects on individuals in response to climatic perturbations. Growth rate, age and developmental stage are all affected by temperature, which interacts with telomere dynamics in complex and intriguing ways. The physiological processes underpinning telomere dynamics can be visualized and understood using thermal performance curves (TPCs). TPCs reflect the evolutionary history and the thermal environment during an individual's ontogeny. Telomere maintenance should be enhanced at or near the thermal performance optimum of a species, population and individual. The thermal sensitivity of telomere dynamics should reflect the interacting TPCs of the processes underlying them. The key processes directly underpinning telomere dynamics are mitochondrial function (reactive oxygen production), antioxidant activity, telomerase activity and telomere endcap protein status. We argue that identifying TPCs for these processes will significantly help design robust, repeatable experiments and field studies of telomere dynamics in ectotherms. Conceptually, TPCs are a valuable framework to predict and interpret taxon- and population-specific telomere dynamics across thermal regimes. The literature of thermal effects on telomeres in ectotherms is sparse and mostly limited to vertebrates, but our conclusions and recommendations are relevant across ectothermic animals.
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Affiliation(s)
- Christopher R Friesen
- School of Earth, Atmospheric and Life Sciences, The University of Wollongong, Wollongong, New South Wales, Australia.,School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Erik Wapstra
- School of Natural Sciences, University of Tasmania, Hobart, Tasmania, Australia
| | - Mats Olsson
- School of Earth, Atmospheric and Life Sciences, The University of Wollongong, Wollongong, New South Wales, Australia.,Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
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21
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Metcalfe NB, Olsson M. How telomere dynamics are influenced by the balance between mitochondrial efficiency, reactive oxygen species production and DNA damage. Mol Ecol 2022; 31:6040-6052. [PMID: 34435398 DOI: 10.1111/mec.16150] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/02/2021] [Accepted: 08/23/2021] [Indexed: 01/31/2023]
Abstract
It is well known that oxidative stress is a major cause of DNA damage and telomere attrition. Most endogenous reactive oxygen species (ROS) are produced in the mitochondria, producing a link between mitochondrial function, DNA integrity and telomere dynamics. In this review we will describe how ROS production, rates of damage to telomeric DNA and DNA repair are dynamic processes. The rate of ROS production depends on mitochondrial features such as the level of inner membrane uncoupling and the proportion of time that ATP is actively being produced. However, the efficiency of ATP production (the ATP/O ratio) is positively related to the rate of ROS production, so leading to a trade-off between the body's energy requirements and its need to prevent oxidative stress. Telomeric DNA is especially vulnerable to oxidative damage due to features such as its high guanine content; while repair to damaged telomere regions is possible through a range of mechanisms, these can result in more rapid telomere shortening. There is increasing evidence that mitochondrial efficiency varies over time and with environmental context, as do rates of DNA repair. We argue that telomere dynamics can only be understood by appreciating that the optimal solution to the trade-off between energetic efficiency and telomere protection will differ between individuals and will change over time, depending on resource availability, energetic demands and life history strategy.
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Affiliation(s)
- Neil B Metcalfe
- Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Mats Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
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22
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Niveta JPS, Kumar MA, Parvathi VD. Telomere attrition and inflammation: the chicken and the egg story. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00335-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
AbstractThe challenge to improve human life span has progressed with the advent of health care services and technologies. This improvement poses a new challenge of an associated wave of diseases and pathologies that have not been observed or experienced. This has led to rise in geriatric population who are currently facing health challenges that needs to be addressed by the research community. This review focuses primarily on two mechanisms that have contributed to aging and associated pathologies: telomere attrition and inflammatory insults. A strong interplay appears to exist between telomere attrition and inflammation, and this could be the basis of many pathologies associated with increasing age. This creates a scientific dilemma as to what comes first: telomere attrition or inflammation. This review will enthuse the reader to the underlying molecules and mechanisms associated with telomere attrition and inflammation and their contribution to aging.
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23
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Precioso M, Molina-Morales M, Dawson DA, Burke TA, Martínez JG. Effects of long-term ethanol storage of blood samples on the estimation of telomere length. Evol Ecol 2022. [DOI: 10.1007/s10682-022-10198-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractTelomeres, DNA structures located at the end of eukaryotic chromosomes, shorten with each cellular cycle. The shortening rate is affected by factors associated with stress, and, thus telomere length has been used as a biomarker of ageing, disease, and different life history trade-offs. Telomere research has received much attention in the last decades, however there is still a wide variety of factors that may affect telomere measurements and to date no study has thoroughly evaluated the possible long-term effect of a storage medium on telomere measurements. In this study we evaluated the long-term effects of ethanol on relative telomere length (RTL) measured by qPCR, using blood samples of magpies collected over twelve years and stored in absolute ethanol at room temperature. We firstly tested whether storage time had an effect on RTL and secondly we modelled the effect of time of storage (from 1 to 12 years) in differences in RTL from DNA extracted twice in consecutive years from the same blood sample. We also tested whether individual amplification efficiencies were influenced by storage time, and whether this could affect our results. Our study provides evidence of an effect of storage time on telomere length measurements. Importantly, this effect shows a pattern of decreasing loss of telomere sequence with storage time that stops after approximate 4 years of storage, which suggests that telomeres may degrade in blood samples stored in ethanol. Our method to quantify the effect of storage time could be used to evaluate other storage buffers and methods. Our results highlight the need to evaluate the long-term effects of storage on telomere measurements, particularly in long-term studies.
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24
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Shakirov EV, Chen JJL, Shippen DE. Plant telomere biology: The green solution to the end-replication problem. THE PLANT CELL 2022; 34:2492-2504. [PMID: 35511166 PMCID: PMC9252485 DOI: 10.1093/plcell/koac122] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/14/2022] [Indexed: 05/04/2023]
Abstract
Telomere maintenance is a fundamental cellular process conserved across all eukaryotic lineages. Although plants and animals diverged over 1.5 billion years ago, lessons learned from plants continue to push the boundaries of science, revealing detailed molecular mechanisms in telomere biology with broad implications for human health, aging biology, and stress responses. Recent studies of plant telomeres have unveiled unexpected divergence in telomere sequence and architecture, and the proteins that engage telomeric DNA and telomerase. The discovery of telomerase RNA components in the plant kingdom and some algae groups revealed new insight into the divergent evolution and the universal core of telomerase across major eukaryotic kingdoms. In addition, resources cataloging the abundant natural variation in Arabidopsis thaliana, maize (Zea mays), and other plants are providing unparalleled opportunities to understand the genetic networks that govern telomere length polymorphism and, as a result, are uncovering unanticipated crosstalk between telomeres, environmental factors, organismal fitness, and plant physiology. Here we recap current advances in plant telomere biology and put this field in perspective relative to telomere and telomerase research in other eukaryotic lineages.
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Affiliation(s)
- Eugene V Shakirov
- Department of Biological Sciences, College of Science, Marshall University, Huntington, West Virginia 25701, USA
| | - Julian J -L Chen
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, USA
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25
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Barnes RP, de Rosa M, Thosar SA, Detwiler AC, Roginskaya V, Van Houten B, Bruchez MP, Stewart-Ornstein J, Opresko PL. Telomeric 8-oxo-guanine drives rapid premature senescence in the absence of telomere shortening. Nat Struct Mol Biol 2022; 29:639-652. [PMID: 35773409 PMCID: PMC9287163 DOI: 10.1038/s41594-022-00790-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 05/16/2022] [Indexed: 01/10/2023]
Abstract
Oxidative stress is a primary cause of cellular senescence and contributes to the etiology of numerous human diseases. Oxidative damage to telomeric DNA has been proposed to cause premature senescence by accelerating telomere shortening. Here, we tested this model directly using a precision chemoptogenetic tool to produce the common lesion 8-oxo-guanine (8oxoG) exclusively at telomeres in human fibroblasts and epithelial cells. A single induction of telomeric 8oxoG is sufficient to trigger multiple hallmarks of p53-dependent senescence. Telomeric 8oxoG activates ATM and ATR signaling, and enriches for markers of telomere dysfunction in replicating, but not quiescent cells. Acute 8oxoG production fails to shorten telomeres, but rather generates fragile sites and mitotic DNA synthesis at telomeres, indicative of impaired replication. Based on our results, we propose that oxidative stress promotes rapid senescence by producing oxidative base lesions that drive replication-dependent telomere fragility and dysfunction in the absence of shortening and shelterin loss. This study uncovers a new mechanism linking oxidative stress to telomere-driven senescence. A common oxidative lesion at telomeres causes rapid premature cellular aging by inducing telomere fragility, rather than telomere shortening.
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Affiliation(s)
- Ryan P Barnes
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA.,UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Mariarosaria de Rosa
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA.,UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Sanjana A Thosar
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA.,UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Ariana C Detwiler
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA.,UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Vera Roginskaya
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA.,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Bennett Van Houten
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA.,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Marcel P Bruchez
- Departments of Biological Sciences and Chemistry and the Molecular Biosensors and Imaging Center, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Jacob Stewart-Ornstein
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA.,Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA. .,UPMC Hillman Cancer Center, Pittsburgh, PA, USA. .,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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26
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Castillo-González C, Barbero Barcenilla B, Young PG, Hall E, Shippen DE. Quantification of 8-oxoG in Plant Telomeres. Int J Mol Sci 2022; 23:ijms23094990. [PMID: 35563379 PMCID: PMC9102096 DOI: 10.3390/ijms23094990] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/19/2022] [Accepted: 04/26/2022] [Indexed: 02/07/2023] Open
Abstract
Chemical modifications in DNA impact gene regulation and chromatin structure. DNA oxidation, for example, alters gene expression, DNA synthesis and cell cycle progression. Modification of telomeric DNA by oxidation is emerging as a marker of genotoxic damage and is associated with reduced genome integrity and changes in telomere length and telomerase activity. 8-oxoguanine (8-oxoG) is the most studied and common outcome of oxidative damage in DNA. The G-rich nature of telomeric DNA is proposed to make it a hotspot for oxidation, but because telomeres make up only a tiny fraction of the genome, it has been difficult to directly test this hypothesis by studying dynamic DNA modifications specific to this region in vivo. Here, we present a new, robust method to differentially enrich telomeric DNA in solution, coupled with downstream methods for determination of chemical modification. Specifically, we measure 8-oxoG in Arabidopsis thaliana telomeres under normal and oxidative stress conditions. We show that telomere length is unchanged in response to oxidative stress in three different wild-type accessions. Furthermore, we report that while telomeric DNA comprises only 0.02–0.07% of the total genome, telomeres contribute between 0.2 and 15% of the total 8-oxoG. That is, plant telomeres accumulate 8-oxoG at levels approximately 100-fold higher than the rest of the genome under standard growth conditions. Moreover, they are the primary targets of further damage upon oxidative stress. Interestingly, the accumulation of 8-oxoG in the chromosome body seems to be inversely proportional to telomere length. These findings support the hypothesis that telomeres are hotspots of 8-oxoG and may function as sentinels of oxidative stress in plants.
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27
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Wu W, Du Z, Wu L. Dexmedetomidine attenuates hypoxia-induced cardiomyocyte injury by promoting telomere/telomerase activity: Possible involvement of ERK1/2-Nrf2 signaling pathway. Cell Biol Int 2022; 46:1036-1046. [PMID: 35312207 DOI: 10.1002/cbin.11799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/26/2021] [Accepted: 01/22/2022] [Indexed: 11/06/2022]
Abstract
Dexmedetomidine (Dex), an α2-adrenergic receptor (α2-AR) agonist, possesses cardioprotection against ischaemic/hypoxic injury, but the exact mechanism is not fully elucidated. Since telomere/telomerase dysfunction is involved in myocardial ischemic damage, the present study aimed to investigate whether Dex ameliorates cobalt chloride (CoCl2; a hypoxia mimic agent in vitro)-induced the damage of H9c2 cardiomyocytes by improving telomere/telomerase dysfunction and further explored the underlying mechanism focusing on ERK1/2-Nrf2 signaling pathway. Result showed that Dex increased cell viability, decreased apoptosis, and reduced cardiomyocyte hypertrophy as illustrated by the decreases in cell surface area and the biomarker levels for cardiac hypertrophy including atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), and myosin heavy chain β (β-MHC) mRNA and protein in CoCl2 -exposed H9c2 cells. Intriguingly, Dex increased the telomere length and telomerase activity as well as telomere reverse transcriptase (TERT) protein and mRNA levels in H9c2 cells exposed to CoCl2 , indicating that Dex promotes telomere/telomerase function under hypoxia. In addition, Dex remarkably diminished the ROS generation, reduced MDA content, and increased antioxidative signaling as evidenced by the increases in SOD and GSH-Px activities. Furthermore, Dex increased the ratio of P-ERK1/2/T-ERK1/2 and P-Nrf2/T-Nrf2 and enhanced Nrf2 nuclear translocation in CoCl2 -subjected H9c2 cells, suggesting that Dex promotes the activation of the ERK1/2-Nrf2 signaling pathway. These novel findings indicated that Dex attenuates myocardial ischemic damage and reduces myocardial hypertrophy by promoting telomere/telomerase function, which may be associated with the activation of the ERK1/2-Nrf2 signaling pathway in vitro. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Wei Wu
- Department of Anesthesiology, Hunan Children's Hospital, Changsha, China 410007, People's Republic of China
| | - Zhen Du
- Department of Anesthesiology, Hunan Children's Hospital, Changsha, China 410007, People's Republic of China
| | - Lei Wu
- Department of Anesthesiology, Hunan Children's Hospital, Changsha, China 410007, People's Republic of China
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28
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Barnes RP, Thosar SA, Fouquerel E, Opresko PL. Targeted Formation of 8-Oxoguanine in Telomeres. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2022; 2444:141-159. [PMID: 35290636 DOI: 10.1007/978-1-0716-2063-2_9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mammalian telomeres are guanine-rich sequences which cap the ends of linear chromosomes. While recognized as sites sensitive to oxidative stress, studies on the consequences of oxidative damage to telomeres have been primarily limited to experimental conditions which cause oxidative damage throughout the whole genome and cell. We developed a chemoptogenetic tool (FAP-mCER-TRF1) to specifically induce singlet oxygen at telomeres, resulting in the formation of the common oxidative lesion 8-oxo-guanine. Here, we describe this tool and detail how to generate cell lines which express FAP-mCER-TRF1 at telomeres and verify the formation of 8-oxo-guanine.
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Affiliation(s)
- Ryan P Barnes
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Sanjana A Thosar
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Elise Fouquerel
- Department of Biochemistry and Molecular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and UPMC Hillman Cancer Center, Pittsburgh, PA, USA.
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29
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MicroRNAs, Long Non-Coding RNAs, and Circular RNAs in the Redox Control of Cell Senescence. Antioxidants (Basel) 2022; 11:antiox11030480. [PMID: 35326131 PMCID: PMC8944605 DOI: 10.3390/antiox11030480] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/21/2022] [Accepted: 02/24/2022] [Indexed: 12/18/2022] Open
Abstract
Cell senescence is critical in diverse aspects of organism life. It is involved in tissue development and homeostasis, as well as in tumor suppression. Consequently, it is tightly integrated with basic physiological processes during life. On the other hand, senescence is gradually being considered as a major contributor of organismal aging and age-related diseases. Increased oxidative stress is one of the main risk factors for cellular damages, and thus a driver of senescence. In fact, there is an intimate link between cell senescence and response to different types of cellular stress. Oxidative stress occurs when the production of reactive oxygen species/reactive nitrogen species (ROS/RNS) is not adequately detoxified by the antioxidant defense systems. Non-coding RNAs are endogenous transcripts that govern gene regulatory networks, thus impacting both physiological and pathological events. Among these molecules, microRNAs, long non-coding RNAs, and more recently circular RNAs are considered crucial mediators of almost all cellular processes, including those implicated in oxidative stress responses. Here, we will describe recent data on the link between ROS/RNS-induced senescence and the current knowledge on the role of non-coding RNAs in the senescence program.
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30
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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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31
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Lin J, Epel E. Stress and telomere shortening: Insights from cellular mechanisms. Ageing Res Rev 2022; 73:101507. [PMID: 34736994 PMCID: PMC8920518 DOI: 10.1016/j.arr.2021.101507] [Citation(s) in RCA: 117] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 10/08/2021] [Accepted: 10/21/2021] [Indexed: 12/14/2022]
Abstract
Short telomeres confer risk of degenerative diseases. Chronic psychological stress can lead to disease through many pathways, and research from in vitro studies to human longitudinal studies has pointed to stress-induced telomere damage as an important pathway. However, there has not been a comprehensive model to describe how changes in stress physiology and neuroendocrine pathways can lead to changes in telomere biology. Critically short telomeres or the collapse of the telomere structure caused by displacement of telomere binding protein complex shelterin elicit a DNA damage response and lead to senescence or apoptosis. In this narrative review, we summarize the key roles glucocorticoids, reactive oxygen species (ROS) and mitochondria, and inflammation play in mediating the relationship between psychological stress and telomere maintenance. We emphasis that these mediators are interconnected and reinforce each other in positive feedback loops. Telomere length has not been studied across the lifespan yet, but the initial setting point at birth appears to be the most influential point, as it sets the lifetime trajectory, and is influenced by stress. We describe two types of intergenerational stress effects on telomeres - prenatal stress effects on telomeres during fetal development, and 'telotype transmission" -the directly inherited transmission of short telomeres from parental germline. It is clear that the initial simplistic view of telomere length as a mitotic clock has evolved into a far more complex picture of both transgenerational telomere influences, and of interconnected molecular and cellular pathways and networks, as hallmarks of aging where telomere maintenance is a key player interacting with mitochondria. Further mechanistic investigations testing this comprehensive model of stress mediators shaping telomere biology and the telomere-mitochondrial nexus will lead to better understanding from cell to human lifespan aging, and could lead to anti-aging interventions.
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32
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van der Spek A, Karamujić-Čomić H, Pool R, Bot M, Beekman M, Garmaeva S, Arp PP, Henkelman S, Liu J, Alves AC, Willemsen G, van Grootheest G, Aubert G, Ikram MA, Jarvelin MR, Lansdorp P, Uitterlinden AG, Zhernakova A, Slagboom PE, Penninx BWJH, Boomsma DI, Amin N, van Duijn CM. Fat metabolism is associated with telomere length in six population-based studies. Hum Mol Genet 2021; 31:1159-1170. [PMID: 34875050 DOI: 10.1093/hmg/ddab281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/13/2021] [Accepted: 09/07/2021] [Indexed: 11/13/2022] Open
Abstract
Telomeres are repetitive DNA sequences located at the end of chromosomes, which are associated to biological aging, cardiovascular disease, cancer, and mortality. Lipid and fatty acid metabolism have been associated with telomere shortening. We have conducted an in-depth study investigating the association of metabolic biomarkers with telomere length (LTL). We performed an association analysis of 226 metabolic biomarkers with LTL using data from 11 775 individuals from six independent population-based cohorts (BBMRI-NL consortium). Metabolic biomarkers include lipoprotein lipids and subclasses, fatty acids, amino acids, glycolysis measures and ketone bodies. LTL was measured by quantitative polymerase chain reaction or FlowFISH. Linear regression analysis was performed adjusting for age, sex, lipid-lowering medication and cohort-specific covariates (model 1) and additionally for body mass index (BMI) and smoking (model 2), followed by inverse variance-weighted meta-analyses (significance threshold pmeta = 6.5x10-4). We identified four metabolic biomarkers positively associated with LTL, including two cholesterol to lipid ratios in small VLDL (S-VLDL-C % and S-VLDL-ce %) and two omega-6 fatty acid ratios (FAw6/FA and LA/FA). After additionally adjusting for BMI and smoking, these metabolic biomarkers remained associated with LTL with similar effect estimates. In addition, cholesterol esters in very small VLDL (XS-VLDL-ce) became significantly associated with LTL (p = 3.6x10-4). We replicated the association of FAw6/FA with LTL in an independent dataset of 7845 individuals (p = 1.9x10-4). To conclude, we identified multiple metabolic biomarkers involved in lipid and fatty acid metabolism that may be involved in LTL biology. Longitudinal studies are needed to exclude reversed causation.
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Affiliation(s)
- Ashley van der Spek
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,SkylineDx B.V., Rotterdam, The Netherlands
| | - Hata Karamujić-Čomić
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - René Pool
- Department of Biological Psychology, Vrije Universiteit University Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health research institute, Amsterdam University Medical Centers, The Netherlands.,BBMRI-NL: Infrastructure for the Application of Metabolomics Technology in Epidemiology (RP4), The Netherlands
| | - Mariska Bot
- Department of Psychiatry and GGZ in Geest, Amsterdam Public Health research institute and Amsterdam Neuroscience, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - Marian Beekman
- Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - Sanzhima Garmaeva
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Pascal P Arp
- Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Sandra Henkelman
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jun Liu
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Alexessander Couto Alves
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.,School of Biosciences and Medicine, University of Surrey, Guildford, UK
| | - Gonneke Willemsen
- Department of Biological Psychology, Vrije Universiteit University Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health research institute, Amsterdam University Medical Centers, The Netherlands
| | - Gerard van Grootheest
- Department of Psychiatry and GGZ in Geest, Amsterdam Public Health research institute and Amsterdam Neuroscience, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - Geraldine Aubert
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, V5Z 1L3 British Columbia, Canada
| | | | - M Arfan Ikram
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Marjo-Riitta Jarvelin
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.,Center for Life Course Epidemiology, Faculty of Medicine, University of Oulu, Oulu, Finland.,Biocenter Oulu, University of Oulu, Oulu, Finland.,Unit of Primary Care, Oulu University Hospital, Oulu, Finland
| | - Peter Lansdorp
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, V5Z 1L3 British Columbia, Canada.,Departments of Medical Genetics and Hematology, University of British Columbia, Vancouver, V6T 1Z4 British Columbia, Canada
| | - André G Uitterlinden
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Alexandra Zhernakova
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - P Eline Slagboom
- Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - Brenda W J H Penninx
- Department of Psychiatry and GGZ in Geest, Amsterdam Public Health research institute and Amsterdam Neuroscience, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - Dorret I Boomsma
- Department of Biological Psychology, Vrije Universiteit University Amsterdam, Amsterdam, The Netherlands.,Amsterdam Public Health research institute, Amsterdam University Medical Centers, The Netherlands.,BBMRI-NL: Infrastructure for the Application of Metabolomics Technology in Epidemiology (RP4), The Netherlands
| | - Najaf Amin
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Cornelia M van Duijn
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Nuffield Department of Population Health, University of Oxford, Oxford, UK
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33
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De Rosa M, Johnson SA, Opresko PL. Roles for the 8-Oxoguanine DNA Repair System in Protecting Telomeres From Oxidative Stress. Front Cell Dev Biol 2021; 9:758402. [PMID: 34869348 PMCID: PMC8640134 DOI: 10.3389/fcell.2021.758402] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/27/2021] [Indexed: 11/27/2022] Open
Abstract
Telomeres are protective nucleoprotein structures that cap linear chromosome ends and safeguard genome stability. Progressive telomere shortening at each somatic cell division eventually leads to critically short and dysfunctional telomeres, which can contribute to either cellular senescence and aging, or tumorigenesis. Human reproductive cells, some stem cells, and most cancer cells, express the enzyme telomerase to restore telomeric DNA. Numerous studies have shown that oxidative stress caused by excess reactive oxygen species is associated with accelerated telomere shortening and dysfunction. Telomeric repeat sequences are remarkably susceptible to oxidative damage and are preferred sites for the production of the mutagenic base lesion 8-oxoguanine, which can alter telomere length homeostasis and integrity. Therefore, knowledge of the repair pathways involved in the processing of 8-oxoguanine at telomeres is important for advancing understanding of the pathogenesis of degenerative diseases and cancer associated with telomere instability. The highly conserved guanine oxidation (GO) system involves three specialized enzymes that initiate distinct pathways to specifically mitigate the adverse effects of 8-oxoguanine. Here we introduce the GO system and review the studies focused on investigating how telomeric 8-oxoguanine processing affects telomere integrity and overall genome stability. We also discuss newly developed technologies that target oxidative damage selectively to telomeres to investigate roles for the GO system in telomere stability.
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Affiliation(s)
- Mariarosaria De Rosa
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, United States
| | - Samuel A Johnson
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, United States
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, United States
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34
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Wang L, Lu Z, Zhao J, Schank M, Cao D, Dang X, Nguyen LN, Nguyen LNT, Khanal S, Zhang J, Wu XY, El Gazzar M, Ning S, Moorman J, Yao ZQ. Selective oxidative stress induces dual damage to telomeres and mitochondria in human T cells. Aging Cell 2021; 20:e13513. [PMID: 34752684 PMCID: PMC8672791 DOI: 10.1111/acel.13513] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 09/27/2021] [Accepted: 10/31/2021] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress caused by excess reactive oxygen species (ROS) accelerates telomere erosion and mitochondrial injury, leading to impaired cellular functions and cell death. Whether oxidative stress‐mediated telomere erosion induces mitochondrial injury, or vice versa, in human T cells—the major effectors of host adaptive immunity against infection and malignancy—is poorly understood due to the pleiotropic effects of ROS. Here we employed a novel chemoptogenetic tool that selectively produces a single oxygen (1O2) only at telomeres or mitochondria in Jurkat T cells. We found that targeted 1O2 production at telomeres triggered not only telomeric DNA damage but also mitochondrial dysfunction, resulting in T cell apoptotic death. Conversely, targeted 1O2 formation at mitochondria induced not only mitochondrial injury but also telomeric DNA damage, leading to cellular crisis and apoptosis. Targeted oxidative stress at either telomeres or mitochondria increased ROS production, whereas blocking ROS formation during oxidative stress reversed the telomeric injury, mitochondrial dysfunction, and cellular apoptosis. Notably, the X‐ray repair cross‐complementing protein 1 (XRCC1) in the base excision repair (BER) pathway and multiple mitochondrial proteins in other cellular pathways were dysregulated by the targeted oxidative stress. By confining singlet 1O2 formation to a single organelle, this study suggests that oxidative stress induces dual injury in T cells via crosstalk between telomeres and mitochondria. Further identification of these oxidation pathways may offer a novel approach to preserve mitochondrial functions, protect telomere integrity, and maintain T cell survival, which can be exploited to combat various immune aging‐associated diseases.
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Affiliation(s)
- Ling Wang
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Zeyuan Lu
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Juan Zhao
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Madison Schank
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Dechao Cao
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Xindi Dang
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Lam Nhat Nguyen
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Lam Ngoc Thao Nguyen
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Sushant Khanal
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Jinyu Zhang
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Xiao Y. Wu
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Mohamed El Gazzar
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Shunbin Ning
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
| | - Jonathan P. Moorman
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Hepatitis (HCV/HBV/HIV) Program Department of Veterans Affairs James H. Quillen VA Medical Center Johnson City Tennessee USA
| | - Zhi Q. Yao
- Center of Excellence in Inflammation, Infectious Disease and Immunity Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Division of Infectious, Inflammatory and Immunologic Diseases Department of Internal Medicine Quillen College of Medicine East Tennessee State University Johnson City Tennessee USA
- Hepatitis (HCV/HBV/HIV) Program Department of Veterans Affairs James H. Quillen VA Medical Center Johnson City Tennessee USA
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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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Martin H, Doumic M, Teixeira MT, Xu Z. Telomere shortening causes distinct cell division regimes during replicative senescence in Saccharomyces cerevisiae. Cell Biosci 2021; 11:180. [PMID: 34627377 PMCID: PMC8502270 DOI: 10.1186/s13578-021-00693-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/24/2021] [Indexed: 11/21/2022] Open
Abstract
Background Telomerase-negative cells have limited proliferation potential. In these cells, telomeres shorten until they reach a critical length and induce a permanently arrested state. This process called replicative senescence is associated with genomic instability and participates in tissue and organismal ageing. Experimental data using single-cell approaches in the budding yeast model organism show that telomerase-negative cells often experience abnormally long cell cycles, which can be followed by cell cycles of normal duration, before reaching the terminal senescent state. These series of non-terminal cell cycle arrests contribute to the heterogeneity of senescence and likely magnify its genomic instability. Due to their apparent stochastic nature, investigating the dynamics and the molecular origins of these arrests has been difficult. In particular, whether the non-terminal arrests series stem from a mechanism similar to the one that triggers terminal senescence is not known. Results Here, we provide a mathematical description of sequences of non-terminal arrests to understand how they appear. We take advantage of an experimental data set of cell cycle duration measurements performed in individual telomerase-negative yeast cells that keep track of the number of generations since telomerase inactivation. Using numerical simulations, we show that the occurrence of non-terminal arrests is a generation-dependent process that can be explained by the shortest telomere reaching a probabilistic threshold length. While the onset of senescence is also triggered by telomere shortening, we highlight differences in the laws that describe the number of consecutive arrests in non-terminal arrests compared to senescence arrests, suggesting distinct underlying mechanisms and cellular states. Conclusions Replicative senescence is a complex process that affects cell divisions earlier than anticipated, as exemplified by the frequent occurrence of non-terminal arrests early after telomerase inactivation. The present work unravels two kinetically and mechanistically distinct generation-dependent processes underlying non-terminal and terminal senescence arrests. We suggest that these two processes are responsible for two consequences of senescence at the population level, the increase of genome instability on the one hand, and the limitation of proliferation capacity on the other hand. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00693-3.
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Affiliation(s)
- Hugo Martin
- JL Lions Laboratory, Sorbonne Université, 75005, Paris, France
| | - Marie Doumic
- JL Lions Laboratory, Sorbonne Université, 75005, Paris, France.
| | - Maria Teresa Teixeira
- Laboratoire de Biologie Moléculaire et Cellulaire des Eucaryotes, Institut de Biologie Physico-Chimique, PSL, CNRS, UMR8226, Sorbonne Université, 75005, Paris, France
| | - Zhou Xu
- Laboratory of Computational and Quantitative Biology, Institut de Biologie Paris-Seine, CNRS, UMR7238, Sorbonne Université, 75005, Paris, France.
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Shortened leukocyte telomere length in young adults who use methamphetamine. Transl Psychiatry 2021; 11:519. [PMID: 34628468 PMCID: PMC8502172 DOI: 10.1038/s41398-021-01640-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 04/08/2021] [Accepted: 04/16/2021] [Indexed: 12/23/2022] Open
Abstract
Methamphetamine (METH) use, most prevalent in young adults, has been associated with high rates of morbidity and mortality. The relationship between METH use and accelerated biological aging, which can be measured using leukocyte telomere length (LTL), remains unclear. We examined whether young adult METH users have shorter LTL and explored the relationship between characteristics of METH use and LTL by using Mendelian randomization (MR) analysis. We compared the LTL for 187 METH users and 159 healthy individuals aged between 25 and 34 years and examined the relationship of LTL with METH use variables (onset age, duration, and maximum frequency of METH use) by using regression analyses. In addition, 2-stage-least-squares (2SLS) MR was also performed to possibly avoid uncontrolled confounding between characteristics of METH use and LTL. We found METH users had significantly shorter LTL compared to controls. Multivariate regression analysis showed METH use was negatively associated with LTL (β = -0.36, P < .001). Among METH users, duration of METH use was negatively associated with LTL after adjustment (β = -0.002, P = .01). We identified a single nucleotide polymorphism (SNP) rs6585206 genome-wide associated with duration of METH use. This SNP was used as an instrumental variable to avoid uncontrolled confounding for the relationship between the use duration and LTL shortening. In conclusion, we show that young adult METH users may have shorter LTL compared with controls and longer duration of METH use was significantly associated with telomere shortening. These observations suggest that METH use may accelerate biological senescence.
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Baddock H, Newman J, Yosaatmadja Y, Bielinski M, Schofield C, Gileadi O, McHugh P. A phosphate binding pocket is a key determinant of exo- versus endo-nucleolytic activity in the SNM1 nuclease family. Nucleic Acids Res 2021; 49:9294-9309. [PMID: 34387694 PMCID: PMC8450094 DOI: 10.1093/nar/gkab692] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 07/21/2021] [Accepted: 07/27/2021] [Indexed: 12/02/2022] Open
Abstract
The SNM1 nucleases which help maintain genome integrity are members of the metallo-β-lactamase (MBL) structural superfamily. Their conserved MBL-β-CASP-fold SNM1 core provides a molecular scaffold forming an active site which coordinates the metal ions required for catalysis. The features that determine SNM1 endo- versus exonuclease activity, and which control substrate selectivity and binding are poorly understood. We describe a structure of SNM1B/Apollo with two nucleotides bound to its active site, resembling the product state of its exonuclease reaction. The structure enables definition of key SNM1B residues that form contacts with DNA and identifies a 5' phosphate binding pocket, which we demonstrate is important in catalysis and which has a key role in determining endo- versus exonucleolytic activity across the SNM1 family. We probed the capacity of SNM1B to digest past sites of common endogenous DNA lesions and find that base modifications planar to the nucleobase can be accommodated due to the open architecture of the active site, but lesions axial to the plane of the nucleobase are not well tolerated due to constriction around the altered base. We propose that SNM1B/Apollo might employ its activity to help remove common oxidative lesions from telomeres.
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Affiliation(s)
- Hannah T Baddock
- Department of Oncology, MRC Weatherall Institute of Molecular Medicine, University of Oxford, OX3 9DS, UK
| | - Joseph A Newman
- Centre for Medicines Discovery, University of Oxford, ORCRB, OX3 7DQ, UK
| | | | - Marcin Bielinski
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
| | | | - Opher Gileadi
- Centre for Medicines Discovery, University of Oxford, ORCRB, OX3 7DQ, UK
| | - Peter J McHugh
- Department of Oncology, MRC Weatherall Institute of Molecular Medicine, University of Oxford, OX3 9DS, UK
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Bolzán AD. Mutagen-induced telomere instability in human cells. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2021; 868-869:503387. [PMID: 34454696 DOI: 10.1016/j.mrgentox.2021.503387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/13/2021] [Accepted: 07/18/2021] [Indexed: 11/27/2022]
Abstract
Telomere instability is one of the main sources of genome instability and may result from chromosome end loss (due to chromosome breakage at one or both ends) or, more frequently, telomere dysfunction. Dysfunctional telomeres arise when they lose their end-capping function or become critically short, which causes chromosomal termini to behave like a DNA double-strand break. Telomere instability may occur at the chromosomal or at the molecular level, giving rise, respectively, to telomere-related chromosomal aberrations or the loss or modification of any of the components of the telomere (telomere DNA, telomere-associated proteins, or telomere RNA). Since telomeres play a fundamental role in maintaining genome stability, the study of telomere instability in cells exposed to mutagens is of great importance to understand the telomere-driven genomic instability present in those cells. In the present review, we will focus on the current knowledge about telomere instability induced by physical, chemical, and biological mutagens in human cells.
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Affiliation(s)
- Alejandro D Bolzán
- Laboratorio de Citogenética y Mutagénesis, Instituto Multidisciplinario de Biología Celular (IMBICE, CONICET-CICPBA-UNLP), calle 526 y Camino General Belgrano, B1906APO La Plata, Buenos Aires, Argentina; Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo, calle 60 y 122, La Plata, Buenos Aires, Argentina.
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Zhao Z, Gad H, Benitez-Buelga C, Sanjiv K, Xiangwei H, Kang H, Feng M, Zhao Z, Berglund UW, Xia Q, Helleday T. NEIL3 Prevents Senescence in Hepatocellular Carcinoma by Repairing Oxidative Lesions at Telomeres during Mitosis. Cancer Res 2021; 81:4079-4093. [PMID: 34045188 PMCID: PMC9398161 DOI: 10.1158/0008-5472.can-20-1028] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 01/06/2021] [Accepted: 05/25/2021] [Indexed: 01/07/2023]
Abstract
Patients with hepatocellular carcinoma (HCC) suffer from few treatment options and poor survival rates. Here we report that endonuclease VIII-like protein 3 (NEIL3) is overexpressed in HCC and correlates with poor survival. All six HCC cell lines investigated were dependent on NEIL3 catalytic activity for survival and prevention of senescence, while NEIL3 was dispensable for nontransformed cells. NEIL3-depleted HCC cell lines accumulated oxidative DNA lesions specifically at telomeres, resulting in telomere dysfunctional foci and 53BP1 foci formation. Following oxidative DNA damage during mitosis, NEIL3 relocated to telomeres and recruited apurinic endonuclease 1 (APE1), indicating activation of base excision repair. META-FISH revealed that NEIL3, but not NEIL1 or NEIL2, is required to initiate APE1 and polymerase beta (POLB)-dependent base excision repair at oxidized telomeres. Repeated exposure of NEIL3-depleted cells to oxidizing damage induced chromatin bridges and damaged telomeres. These results demonstrate a novel function for NEIL3 in repair of oxidative DNA damage at telomeres in mitosis, which is important to prevent senescence of HCC cells. Furthermore, these data suggest that NEIL3 could be a target for therapeutic intervention for HCC. SIGNIFICANCE: This study describes compartmentalization of base excision repair during mitosis that is dependent on NEIL3, APE1, and POLB to repair oxidative damage accumulating at telomeres in hepatocellular carcinoma.
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Affiliation(s)
- Zhenjun Zhao
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.,Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Helge Gad
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.,Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield, United Kingdom
| | - Carlos Benitez-Buelga
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Kumar Sanjiv
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Hua Xiangwei
- Organ Transplantation Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - He Kang
- Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mingxuan Feng
- Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhicong Zhao
- Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ulrika Warpman Berglund
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Qiang Xia
- Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Corresponding Authors: Thomas Helleday, Karolinska Institutet, Tomtebodavägen 23B, Stockholm S-171 65, Sweden. E-mail: ; and Xia Qiang, Renji Hospital, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200001, China. E-mail:
| | - Thomas Helleday
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.,Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield, United Kingdom.,Corresponding Authors: Thomas Helleday, Karolinska Institutet, Tomtebodavägen 23B, Stockholm S-171 65, Sweden. E-mail: ; and Xia Qiang, Renji Hospital, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200001, China. E-mail:
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Fernandes SG, Dsouza R, Khattar E. External environmental agents influence telomere length and telomerase activity by modulating internal cellular processes: Implications in human aging. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 85:103633. [PMID: 33711516 DOI: 10.1016/j.etap.2021.103633] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/30/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
External environment affects cellular physiological processes and impact the stability of our genome. The most important structural components of our linear chromosomes which endure the impact by these agents, are the chromosomal ends called telomeres. Telomeres preserve the integrity of our genome by preventing end to end fusions and telomeric loss through by inhibiting DNA damage response (DDR) activation. This is accomplished by the presence of a six membered shelterin complex at telomeres. Further, telomeres cannot be replicated by normal DNA polymerase and require a special enzyme called telomerase which is expressed only in stem cells, few immune cells and germ cells. Telomeres are rich in guanine content and thus become extremely prone to damage arising due to physiological processes like oxidative stress and inflammation. External environmental factors which includes various physical, biological and chemical agents also affect telomere homeostasis by increasing oxidative stress and inflammation. In the present review, we highlight the effect of these external factors on telomerase activity and telomere length. We also discuss how the external agents affect the physiological processes, thus modulating telomere stability. Further, we describe its implication in the development of aging and its related pathologies.
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Affiliation(s)
- Stina George Fernandes
- Sunandan Divatia School of Science, SVKM's NMIMS (Deemed to be University), Vile Parle West, Mumbai, 400056, India
| | - Rebecca Dsouza
- Sunandan Divatia School of Science, SVKM's NMIMS (Deemed to be University), Vile Parle West, Mumbai, 400056, India
| | - Ekta Khattar
- Sunandan Divatia School of Science, SVKM's NMIMS (Deemed to be University), Vile Parle West, Mumbai, 400056, India.
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Noguera JC, Velando A. Telomerase activity can mediate the effects of growth on telomeres during post-natal development in a wild bird. J Exp Biol 2021; 224:269201. [PMID: 34142138 DOI: 10.1242/jeb.242465] [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: 02/18/2021] [Accepted: 05/24/2021] [Indexed: 01/14/2023]
Abstract
In wild animals, telomere attrition during early development has been linked with several fitness disadvantages throughout life. Telomerase enzyme can elongate telomeres, but it is generally assumed that its activity is suppressed in most somatic tissues upon birth. However, recent evidence suggests that this may not be the case for long-lived bird species. We have therefore investigated whether telomerase activity is maintained during the postnatal growth period in a wild yellow-legged gull (Larus michahellis) population. Our results indicate that telomerase activity is not negligible in the blood cells, but activity levels sharply decline from hatching to fledging following a similar pattern to the reduction observed in telomere length. Our results further suggest that the observed variation in telomere length may be the result of a negative effect of fast growth on telomerase activity, thus providing a new mechanism through which growth rates may affect telomere dynamics and potentially life-history trajectories.
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Affiliation(s)
- Jose C Noguera
- Grupo de Ecología Animal (GEA), Centro de Investigacion Mariña (CIM), Universidad de Vigo, Vigo 36310, Spain
| | - Alberto Velando
- Grupo de Ecología Animal (GEA), Centro de Investigacion Mariña (CIM), Universidad de Vigo, Vigo 36310, Spain
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Specificity of Human Sulfiredoxin for Reductant and Peroxiredoxin Oligomeric State. Antioxidants (Basel) 2021; 10:antiox10060946. [PMID: 34208049 PMCID: PMC8230665 DOI: 10.3390/antiox10060946] [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: 05/11/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 01/07/2023] Open
Abstract
Human peroxiredoxins (Prx) are a family of antioxidant enzymes involved in a myriad of cellular functions and diseases. During the reaction with peroxides (e.g., H2O2), the typical 2-Cys Prxs change oligomeric structure between higher order (do)decamers and disulfide-linked dimers, with the hyperoxidized inactive state (-SO2H) favoring the multimeric structure of the reduced enzyme. Here, we present a study on the structural requirements for the repair of hyperoxidized 2-Cys Prxs by human sulfiredoxin (Srx) and the relative efficacy of physiological reductants hydrogen sulfide (H2S) and glutathione (GSH) in this reaction. The crystal structure of the toroidal Prx1-Srx complex shows an extended active site interface. The loss of this interface within engineered Prx2 and Prx3 dimers yielded variants more resistant to hyperoxidation and repair by Srx. Finally, we reveal for the first time Prx isoform-dependent use of and potential cooperation between GSH and H2S in supporting Srx activity.
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Pousa PA, Souza RM, Melo PHM, Correa BHM, Mendonça TSC, Simões-e-Silva AC, Miranda DM. Telomere Shortening and Psychiatric Disorders: A Systematic Review. Cells 2021; 10:1423. [PMID: 34200513 PMCID: PMC8227190 DOI: 10.3390/cells10061423] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/28/2021] [Accepted: 05/31/2021] [Indexed: 12/23/2022] Open
Abstract
Telomeres are aging biomarkers, as they shorten while cells undergo mitosis. The aim of this study was to evaluate whether psychiatric disorders marked by psychological distress lead to alterations to telomere length (TL), corroborating the hypothesis that mental disorders might have a deeper impact on our physiology and aging than it was previously thought. A systematic search of the literature using MeSH descriptors of psychological distress ("Traumatic Stress Disorder" or "Anxiety Disorder" or "depression") and telomere length ("cellular senescence", "oxidative stress" and "telomere") was conducted on PubMed, Cochrane Library and ScienceDirect databases. A total of 56 studies (113,699 patients) measured the TL from individuals diagnosed with anxiety, depression and posttraumatic disorders and compared them with those from healthy subjects. Overall, TL negatively associates with distress-related mental disorders. The possible underlying molecular mechanisms that underly psychiatric diseases to telomere shortening include oxidative stress, inflammation and mitochondrial dysfunction linking. It is still unclear whether psychological distress is either a cause or a consequence of telomere shortening.
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Affiliation(s)
- Pedro A. Pousa
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 30130-100, Brazil; (P.A.P.); (R.M.S.); (P.H.M.M.); (B.H.M.C.); (T.S.C.M.); (A.C.S.-e.-S.)
| | - Raquel M. Souza
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 30130-100, Brazil; (P.A.P.); (R.M.S.); (P.H.M.M.); (B.H.M.C.); (T.S.C.M.); (A.C.S.-e.-S.)
| | - Paulo Henrique M. Melo
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 30130-100, Brazil; (P.A.P.); (R.M.S.); (P.H.M.M.); (B.H.M.C.); (T.S.C.M.); (A.C.S.-e.-S.)
| | - Bernardo H. M. Correa
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 30130-100, Brazil; (P.A.P.); (R.M.S.); (P.H.M.M.); (B.H.M.C.); (T.S.C.M.); (A.C.S.-e.-S.)
| | - Tamires S. C. Mendonça
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 30130-100, Brazil; (P.A.P.); (R.M.S.); (P.H.M.M.); (B.H.M.C.); (T.S.C.M.); (A.C.S.-e.-S.)
| | - Ana Cristina Simões-e-Silva
- Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 30130-100, Brazil; (P.A.P.); (R.M.S.); (P.H.M.M.); (B.H.M.C.); (T.S.C.M.); (A.C.S.-e.-S.)
| | - Débora M. Miranda
- Department of Pediatrics, Laboratory of Molecular Medicine, UFMG, Belo Horizonte, Minas Gerais 30130-100, Brazil
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Baguma M, Nzabara F, Maheshe Balemba G, Malembaka EB, Migabo C, Mudumbi G, Bito V, Cliff J, Rigo JM, Chabwine JN. Konzo risk factors, determinants and etiopathogenesis: What is new? A systematic review. Neurotoxicology 2021; 85:54-67. [PMID: 33964344 DOI: 10.1016/j.neuro.2021.05.001] [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] [Received: 02/10/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/13/2022]
Abstract
Konzo is a toxico-nutritional upper motor neuron disease causing a spastic paraparesis in schoolchildren and childbearing women in some African countries. Almost a century since the first description of konzo, its underlying etiopathogenic mechanisms and causative agent remain unknown. This paper aims at refreshing the current knowledge of konzo determinants and pathogenesis in order to enlighten potential new research and management perspectives. Literature research was performed in PubMed and Web of Science databases according to the PRISMA methodology. Available data show that cassava-derived cyanide poisoning and protein malnutrition constitute two well-documented risk factors of konzo. However, observational studies have failed to demonstrate the causal relationship between konzo and cyanide poisoning. Thiocyanate, the current marker of choice of cyanide exposure, may underestimate the actual level of cyanide poisoning in konzo patients as a larger amount of cyanide is detoxified via other unusual pathways in the context of protein malnutrition characterizing these patients. Furthermore, the appearance of konzo may be the consequence of the interplay of several factors including cyanide metabolites, nutritional deficiencies, psycho-emotional and geo-environmental factors, resulting in pathophysiologic phenomena such as excitotoxicity or oxidative stress, responsible for neuronal damage that takes place at sparse cellular and/or subcellular levels.
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Affiliation(s)
- Marius Baguma
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; Biomedical Research Institute (BIOMED), UHasselt - Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium.
| | - Fabrice Nzabara
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; École Régionale de Santé Publique (ERSP), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Ghislain Maheshe Balemba
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Espoir Bwenge Malembaka
- École Régionale de Santé Publique (ERSP), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Christiane Migabo
- Faculty of Agronomy, Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; Department of Geography and Environmental Studies, College of Social Sciences and Humanities, Jimma University, Jimma, Ethiopia
| | - Germain Mudumbi
- Department of Pediatrics, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Virginie Bito
- Biomedical Research Institute (BIOMED), UHasselt - Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium
| | - Julie Cliff
- Faculty of Medicine, Department of Community Health, Eduardo Mondlane University, Maputo, Mozambique
| | - Jean-Michel Rigo
- Biomedical Research Institute (BIOMED), UHasselt - Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium
| | - Joëlle Nsimire Chabwine
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; Department of Neuroscience and Movement Science, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
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Berby B, Bichara C, Rives-Feraille A, Jumeau F, Pizio PD, Sétif V, Sibert L, Dumont L, Rondanino C, Rives N. Oxidative Stress Is Associated with Telomere Interaction Impairment and Chromatin Condensation Defects in Spermatozoa of Infertile Males. Antioxidants (Basel) 2021; 10:antiox10040593. [PMID: 33921485 PMCID: PMC8069055 DOI: 10.3390/antiox10040593] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/29/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023] Open
Abstract
Telomere length can be influenced by reactive oxygen species (ROS) generated by lifestyle factors or environmental exposure. We sought to determine whether oxidative stress has an impact on sperm nuclear alterations, especially on chromatin organization and telomere interactions in the spermatozoa of infertile males. We performed an observational and prospective study including fifty-two males, allocated in the "case group" (30 infertile males presenting conventional semen parameter alterations) and the "control group" (22 males with normal conventional semen parameters). ROS detection was determined on spermatozoa using CellROX© probes. Sperm nuclear damage was assessed using quantitative fluorescence in situ hybridization (Q-FISH) for relative telomere length and telomere number, aniline blue staining for chromatin condensation, terminal deoxynucleotidyl transferase dUTP nick-end labeling for DNA fragmentation, and FISH for aneuploidy and 8-hydroxy-2'-deoxyguanosine immunostaining for oxidative DNA damages. Infertile males had significantly increased levels of cytoplasmic ROS and chromatin condensation defects as well as a higher mean number of telomere signals per spermatozoon in comparison with controls. In addition, the mean number of sperm telomere signals were positively correlated with the percentage of spermatozoa with chromatin condensation defect. In infertile males with conventional semen parameter alterations, oxidative stress is associated with telomere interaction impairment and chromatin condensation defects.
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Affiliation(s)
- Benoit Berby
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
| | - Cynthia Bichara
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
| | - Aurélie Rives-Feraille
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
| | - Fanny Jumeau
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
| | - Pierre Di Pizio
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
| | - Véronique Sétif
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
| | - Louis Sibert
- Department of Urology—Andrology, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France;
| | - Ludovic Dumont
- Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (L.D.); (C.R.)
| | - Chistine Rondanino
- Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (L.D.); (C.R.)
| | - Nathalie Rives
- Biology of Reproduction—CECOS Laboratory, Rouen University Hospital, Normandie University, UNIROUEN, EA 4308 “Gametogenesis and Gamete Quality”, F 76000 Rouen, France; (B.B.); (C.B.); (A.R.-F.); (F.J.); (P.D.P.); (V.S.)
- Correspondence: ; Tel.: +33-2-3288-8225
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An original biomarker for the risk of developing cardiovascular diseases and their complications: Telomere length. Toxicol Rep 2021; 8:499-504. [PMID: 33732625 PMCID: PMC7941069 DOI: 10.1016/j.toxrep.2021.02.024] [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: 09/06/2020] [Revised: 02/07/2021] [Accepted: 02/27/2021] [Indexed: 12/26/2022] Open
Abstract
We studied a sample of patients with coronary heart disease. We analyzed the telomere length in this sample. We compared telomere length in patients and conventionally healthy study participants. Patients with coronary heart disease had shorter telomerestelomeres. These patients had an increased risk of cardiovascular complication.
Aim The aim of this work was to study the effect of telomere length in the chromosomes of nuclear blood cells in individuals with coronary heart disease (CHD) on the development of cardiovascular complications (CVC). Materials and methods DNA was isolated from nuclear blood cells of 498 study participants. The telomere length was determined by real-time polymerase chain reaction. The investigation of each sample was repeated three times. Five years after the end of this study, a telephone survey of 119 patients with CHD was conducted in order to obtain data on the presence of CVC. Results According to the results obtained, a decrease in telomere length in patients with coronary heart disease increases the risk of subsequent development of cardiovascular complications. Conclusion Patients with coronary heart disease with shorter telomeres compared with conventionally healthy study participants had an increased risk of cardiovascular complications within 5 years after telomere analysis.
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Baquero JM, Benítez-Buelga C, Rajagopal V, Zhenjun Z, Torres-Ruiz R, Müller S, Hanna BMF, Loseva O, Wallner O, Michel M, Rodríguez-Perales S, Gad H, Visnes T, Helleday T, Benítez J, Osorio A. Small molecule inhibitor of OGG1 blocks oxidative DNA damage repair at telomeres and potentiates methotrexate anticancer effects. Sci Rep 2021; 11:3490. [PMID: 33568707 PMCID: PMC7876102 DOI: 10.1038/s41598-021-82917-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/18/2021] [Indexed: 02/06/2023] Open
Abstract
The most common oxidative DNA lesion is 8-oxoguanine which is mainly recognized and excised by the 8-oxoG DNA glycosylase 1 (OGG1), initiating the base excision repair (BER) pathway. Telomeres are particularly sensitive to oxidative stress (OS) which disrupts telomere homeostasis triggering genome instability. In the present study, we have investigated the effects of inactivating BER in OS conditions, by using a specific inhibitor of OGG1 (TH5487). We have found that in OS conditions, TH5487 blocks BER initiation at telomeres causing an accumulation of oxidized bases, that is correlated with telomere losses, micronuclei formation and mild proliferation defects. Moreover, the antimetabolite methotrexate synergizes with TH5487 through induction of intracellular reactive oxygen species (ROS) formation, which potentiates TH5487-mediated telomere and genome instability. Our findings demonstrate that OGG1 is required to protect telomeres from OS and present OGG1 inhibitors as a tool to induce oxidative DNA damage at telomeres, with the potential for developing new combination therapies for cancer treatment.
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Affiliation(s)
- Juan Miguel Baquero
- Human Genetics Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), 28029, Madrid, Spain
| | - Carlos Benítez-Buelga
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden.
| | - Varshni Rajagopal
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Zhao Zhenjun
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Raúl Torres-Ruiz
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), 28029, Madrid, Spain
- Department of Biomedicine, School of Medicine, Josep Carreras Leukemia Research Institute, University of Barcelona, 08036, Barcelona, Spain
| | - Sarah Müller
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Bishoy M F Hanna
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Olga Loseva
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Olov Wallner
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Maurice Michel
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
| | - Sandra Rodríguez-Perales
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), 28029, Madrid, Spain
| | - Helge Gad
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield, S10 2RX, UK
| | - Torkild Visnes
- Department of Biotechnology and Nanomedicine, SINTEF Industry, 7465, Trondheim, Norway
| | - Thomas Helleday
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 17121, Solna, Sweden
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield, S10 2RX, UK
| | - Javier Benítez
- Human Genetics Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), 28029, Madrid, Spain
- Spanish Network on Rare Diseases (CIBERER), 28029, Madrid, Spain
- Human Genotyping-CEGEN Unit, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), 28029, Madrid, Spain
| | - Ana Osorio
- Human Genetics Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), 28029, Madrid, Spain.
- Spanish Network on Rare Diseases (CIBERER), 28029, Madrid, Spain.
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Health disparities: Intracellular consequences of social determinants of health. Toxicol Appl Pharmacol 2021; 416:115444. [PMID: 33549591 DOI: 10.1016/j.taap.2021.115444] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/27/2021] [Accepted: 01/30/2021] [Indexed: 12/14/2022]
Abstract
Health disparities exist dependent on socioeconomic status, living conditions, race/ethnicity, diet, and exposures to environmental pollutants. Herein, the various exposures contributing to a person's exposome are collectively considered social determinants of health (SDOH), and the SDOH-exposome impacts health more than health care. This review discusses the extent of evidence of the physiologic consequences of these exposures at the intracellular level. We consider how the SDOH-exposome, which captures how individuals live, work and age, induces cell processes that modulate a conceptual "redox rheostat." Like an electrical resistor, the SDOH-exposome, along with genetic predisposition and age, regulate reductive and oxidative (redox) stress circuits and thereby stimulate inflammation. Regardless of the source of the SDOH-exposome that induces chronic inflammation and immunosenescence, the outcome influences cardiometabolic diseases, cancers, infections, sepsis, neurodegeneration and autoimmune diseases. The endogenous redox rheostat is connected with regulatory molecules such as NAD+/NADH and SIRT1 that drive redox pathways. In addition to these intracellular and mitochondrial processes, we discuss how the SDOH-exposome can influence the balance between metabolism and regulation of immune responsiveness involving the two main molecular drivers of inflammation, the NLRP3 inflammasome and NF-κB induction. Mitochondrial and inflammasome activities play key roles in mediating defenses against pathogens and controlling inflammation before diverse cell death pathways are induced. Specifically, pyroptosis, cell death by inflammation, is intimately associated with common disease outcomes that are influenced by the SDOH-exposome. Redox influences on immunometabolism including protein cysteines and ion fluxes are discussed regarding health outcomes. In summary, this review presents a translational research perspective, with evidence from in vitro and in vivo models as well as clinical and epidemiological studies, to outline the intracellular consequences of the SDOH-exposome that drive health disparities in patients and populations. The relevance of this conceptual and theoretical model considering the SARS-CoV-2 pandemic are highlighted. Finally, the case of asthma is presented as a chronic condition that is modified by adverse SDOH exposures and is manifested through the dysregulation of immune cell redox regulatory processes we highlight in this review.
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Doroshchuk NA, Lankin VZ, Tikhaze AK, Kheimets GI, Doroshсhuk AD, Smirnova MD, Chazova IE. [Telomere length as a biomarker of the risk of cardiovascular complications in patients with coronary heart disease]. TERAPEVT ARKH 2021; 93:20-24. [PMID: 33720621 DOI: 10.26442/00403660.2021.01.200588] [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: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 11/22/2022]
Abstract
AIM To study the effect of oxidative stress and telomere length in the chromosomes of blood leukocytes in patients with coronary heart disease (CHD) on the development of cardiovascular complications. MATERIALS AND METHODS In 119 patients with CHD, the level of oxidatively modified low-density lipoproteins (ox-LDL) in blood plasma and the length of telomeres in nuclear blood cells were determined during the examination. After 5 years, a telephone survey of patients (or their relatives) was conducted to obtain data on the presence of cardiovascular complications. Telomere length was determined using quantitative real-time PCR, and the level of ox-LDL was determined by immunochemical method. RESULTS It was found that reducing the length of telomeres in patients with CHD increases the risk of subsequent development of cardiovascular complications. A strong negative correlation was found between the level of ox-LDL and telomere length in the group of examined CHD patients who had cardiovascular complications after 5 years. CONCLUSION CHD patients with short telomere length and high levels of ox-LDL have an increased risk of cardiovascular complications during 5 years.
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Affiliation(s)
| | - V Z Lankin
- National Medical Research Center of Cardiology
| | - A K Tikhaze
- National Medical Research Center of Cardiology
| | | | | | | | - I E Chazova
- National Medical Research Center of Cardiology
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