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Chen J, Lin Y, Gen D, Chen W, Han R, Li H, Tang S, Zheng S, Zhong X. Integrated mRNA- and miRNA-sequencing analyses unveil the underlying mechanism of tobacco pollutant-induced developmental toxicity in zebrafish embryos. J Transl Med 2024; 22:253. [PMID: 38459561 PMCID: PMC10924323 DOI: 10.1186/s12967-024-05050-9] [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: 12/06/2023] [Accepted: 02/29/2024] [Indexed: 03/10/2024] Open
Abstract
Tobacco pollutants are prevalent in the environment, leading to inadvertent exposure of pregnant females. Studies of these pollutants' toxic effects on embryonic development have not fully elucidated the potential underlying mechanisms. Therefore, in this study, we aimed to investigate the developmental toxicity induced by cigarette smoke extract (CSE) at concentrations of 0.25, 1, and 2.5% using a zebrafish embryo toxicity test and integrated transcriptomic analysis of microRNA (miRNA) and messenger RNA (mRNA). The findings revealed that CSE caused developmental toxicity, including increased mortality and decreased incubation rate, in a dose-dependent manner. Moreover, CSE induced malformations and apoptosis, specifically in the head and heart of zebrafish larvae. We used mRNA and miRNA sequencing analyses to compare changes in the expression of genes and miRNAs in zebrafish larvae. The bioinformatics analysis indicates that the mechanism underlying CSE-induced developmental toxicity was associated with compromised genetic material damage repair, deregulated apoptosis, and disturbed lipid metabolism. The enrichment analysis and RT-qPCR show that the ctsba gene plays a crucial function in embryo developmental apoptosis, and the fads2 gene mainly regulates lipid metabolic toxicity. The results of this study improve the understanding of CSE-induced developmental toxicity in zebrafish embryos and contribute insights into the formulation of novel preventive strategies against tobacco pollutants during early embryonic development.
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Affiliation(s)
- Jiasheng Chen
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Yuxin Lin
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Deyi Gen
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Wanxian Chen
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Rui Han
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Hao Li
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Shijie Tang
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China
| | - Shukai Zheng
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China.
| | - Xiaoping Zhong
- Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, People's Republic of China.
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Qiu Y, Gao M, Cao T, Wang J, Luo M, Liu S, Zeng X, Huang J. PFOS and F-53B disrupted inner cell mass development in mouse preimplantation embryo. CHEMOSPHERE 2024; 349:140948. [PMID: 38103655 DOI: 10.1016/j.chemosphere.2023.140948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 11/16/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
Perfluorooctane sulfonic acid (PFOS) is a perfluoroalkyl and polyfluoroalkyl substance (PFAS) widely used in daily life. As its toxicity was confirmed, it has been gradually substituted by F-53B (chlorinated polyfluoroalkyl sulfonates, Cl-PFESAs) in China. PFOS exposure during prenatal development may hinder the development of preimplantation embryos, as indicated by recent epidemiological research and in vivo assays. However, the embryotoxicity data for F-53B are scarce. Furthermore, knowledge about the toxicity of F-53B and PFOS exposure to internal follicular fluid concentrations on early preimplantation embryo development remains limited. In this study, internal exposure concentrations of PFOS (10 nM) and F-53B (2 nM) in human follicular fluid were chosen to study the effects of PFAS on early mouse preimplantation embryo development. We found that both PFOS and F-53B treated zygotes exhibited higher ROS activity in 8-cell embryos but not in 2-cell stage embryos. PFOS and F-53B significantly affected the proportion and aggregation of the inner cell mass (ICM) in the blastocyst, but not the total cell number. Mouse embryonic stem cells (mESCs, isolated from the ICM) and embryoid body (EB) assays were employed to assess the toxicity of PFOS and F-53B on the development and differentiation of embryonic pluripotent cells. These results suggested that mESCs exhibited more DNA damage and abnormal germ layer differentiation after brief exposure to PFOS or F-53B. Finally, RNA-sequencing revealed that PFOS and F-53B exposure affected mESCs biosynthetic processes and chromatin-nucleosome assembly. Our results indicate that F-53B has potential risks as an alternative to PFOS, which disrupts ICM development and differentiation.
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Affiliation(s)
- Yanling Qiu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Min Gao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Tianqi Cao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Jingwen Wang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Mingxun Luo
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Simiao Liu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Xiaowen Zeng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510275, China
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China.
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3
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Zhang Y, Zhang C, Zhang C, Bin X, Jiang J, Huang C. Leukocyte telomere length mediates the association between cadmium exposure and cognitive function in US older adults. J Psychiatr Res 2024; 169:166-173. [PMID: 38039691 DOI: 10.1016/j.jpsychires.2023.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/18/2023] [Accepted: 11/15/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND Long-term exposure to cadmium-polluted environments may lead to shortened leukocyte telomere length and cognitive decline. This study aims to investigate (1) the associations among blood cadmium levels, leukocyte telomere length, and cognitive function, and (2) the mediating role of leukocyte telomere length between blood cadmium levels and cognitive function among older adults in the United States. METHODS Using data from the National Health and Nutrition Examination Survey (NHANES) 1999-2002. Cadmium exposure level was assessed by measuring cadmium levels in blood samples. Leukocyte telomere length was measured by quantitative polymerase chain reaction, and cognitive function was measured by the digit symbol substitution test (DSST). RESULTS A total of 2185 older adults aged over 60 were included in this study, comprising 1109 (49.65%) males. Elevated blood cadmium levels were significantly associated with the risk of a decline in cognitive function (β = - 2.842, p = 0.018). Shorter leukocyte telomere lengths were significantly associated with a higher risk of a decline in cognitive function (β = 4.144, p = 0.020). The total indirect effect on the blood cadmium level and cognitive function via leukocyte telomere length was - 0.218 (p = 0.012). The mediation effect was estimated to be 0.218/2.084 × 100% = 10.46%. CONCLUSION The findings suggest that cadmium exposure may increase the risk of cognitive impairment by causing shortened leukocyte telomere length.
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Affiliation(s)
- Yongpeng Zhang
- Department of General Practice, First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Caiyun Zhang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Chunlei Zhang
- Department of General Practice, First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Xueqiong Bin
- Department of General Practice, First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Jinghan Jiang
- Department of General Practice, First Affiliated Hospital of Wannan Medical College, Wuhu, China.
| | - Changbao Huang
- Emergency Medicine, First Affiliated Hospital of Wannan Medical College, Wuhu, China.
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Vidaki A, Planterose Jiménez B, Poggiali B, Kalamara V, van der Gaag KJ, Maas SCE, Ghanbari M, Sijen T, Kayser M. Targeted DNA methylation analysis and prediction of smoking habits in blood based on massively parallel sequencing. Forensic Sci Int Genet 2023; 65:102878. [PMID: 37116245 DOI: 10.1016/j.fsigen.2023.102878] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/28/2023] [Accepted: 04/18/2023] [Indexed: 04/30/2023]
Abstract
Tobacco smoking is a frequent habit sustained by > 1.3 billion people in 2020 and the leading preventable factor for health risk and premature mortality worldwide. In the forensic context, predicting smoking habits from biological samples may allow broadening DNA phenotyping. In this study, we aimed to implement previously published smoking habit classification models based on blood DNA methylation at 13 CpGs. First, we developed a matching lab tool based on bisulfite conversion and multiplex PCR followed by amplification-free library preparation and targeted paired-end massively parallel sequencing (MPS). Analysis of six technical duplicates revealed high reproducibility of methylation measurements (Pearson correlation of 0.983). Artificially methylated standards uncovered marker-specific amplification bias, which we corrected via bi-exponential models. We then applied our MPS tool to 232 blood samples from Europeans of a wide age range, of which 90 were current, 71 former and 71 never smokers. On average, we obtained 189,000 reads/sample and 15,000 reads/CpG, without marker drop-out. Methylation distributions per smoking category roughly corresponded to previous microarray analysis, showcasing large inter-individual variation but with technology-driven bias. Methylation at 11 out of 13 smoking-CpGs correlated with daily cigarettes in current smokers, while solely one was weakly correlated with time since cessation in former smokers. Interestingly, eight smoking-CpGs correlated with age, and one displayed weak but significant sex-associated methylation differences. Using bias-uncorrected MPS data, smoking habits were relatively accurately predicted using both two- (current/non-current) and three- (never/former/current) category model, but bias correction resulted in worse prediction performance for both models. Finally, to account for technology-driven variation, we built new, joint models with inter-technology corrections, which resulted in improved prediction results for both models, with or without PCR bias correction (e.g. MPS cross-validation F1-score > 0.8; 2-categories). Overall, our novel assay takes us one step closer towards the forensic application of viable smoking habit prediction from blood traces. However, future research is needed towards forensically validating the assay, especially in terms of sensitivity. We also need to further shed light on the employed biomarkers, particularly on the mechanistics, tissue specificity and putative confounders of smoking epigenetic signatures.
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Affiliation(s)
- Athina Vidaki
- Department of Genetic Identification, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Benjamin Planterose Jiménez
- Department of Genetic Identification, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Brando Poggiali
- Department of Genetic Identification, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Vivian Kalamara
- Department of Genetic Identification, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | | | - Silvana C E Maas
- Department of Genetic Identification, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Mohsen Ghanbari
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Titia Sijen
- Division of Biological Traces, Netherlands Forensic Institute, The Hague, the Netherlands; Swammerdam Institute of Life Sciences, University of Amsterdam, Amsterdam, the Netherlands
| | - Manfred Kayser
- Department of Genetic Identification, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
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Lv BB, Yang CL, Tan ZX, Zheng L, Li MD, Jiang YL, Liu L, Tang MM, Hua DX, Yang J, Xu DX, Zhao H, Fu L. Association between cadmium exposure and pulmonary function reduction: Potential mediating role of telomere attrition in chronic obstructive pulmonary disease patients. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 251:114548. [PMID: 36652742 DOI: 10.1016/j.ecoenv.2023.114548] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/28/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Environmental cadmium (Cd) exposure is linked to pulmonary function injury in the general population. But, the association between blood Cd concentration and pulmonary function has not been investigated thoroughly in chronic obstructive pulmonary disease (COPD) patients, and the potential mechanisms are unclear. METHODS All eligible 789 COPD patients were enrolled from Anhui COPD cohort. Blood specimens and clinical information were collected. Pulmonary function test was conducted. The subunit of telomerase, telomerase reverse transcriptase (TERT), was determined through enzyme linked immunosorbent assay (ELISA). Blood Cd was measured via inductively coupled-mass spectrometer (ICP-MS). RESULTS Blood Cd was negatively and dose-dependently associated with pulmonary function. Each 1-unit increase of blood Cd was associated with 0.861 L decline in FVC, 0.648 L decline in FEV1, 5.938 % decline in FEV1/FVC %, and 22.098 % decline in FEV1 % among COPD patients, respectively. Age, current-smoking, self-cooking and higher smoking amount aggravated Cd-evoked pulmonary function decrease. Additionally, there was an inversely dose-response association between Cd concentration and TERT in COPD patients. Elevated TERT obviously mediated 29.53 %, 37.50 % and 19.48 % of Cd-evoked FVC, FEV1, and FEV1 % declines in COPD patients, respectively. CONCLUSION Blood Cd concentration is strongly associated with the decline of pulmonary function and telomerase activity among COPD patients. Telomere attrition partially mediates Cd-induced pulmonary function decline, suggesting an underlying mechanistic role of telomere attrition in pulmonary function decline from Cd exposure in COPD patients.
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Affiliation(s)
- Bian-Bian Lv
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Department of Toxicology, Anhui Medical University, Hefei, Anhui 230032, China
| | - Chun-Lan Yang
- Department of Pharmacy, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, China
| | - Zhu-Xia Tan
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Ling Zheng
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Meng-Die Li
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Ya-Lin Jiang
- Department of Respiratory and Critical Care Medicine, Bozhou People's Hospital, Bozhou, Anhui 236800, China
| | - Ling Liu
- Department of Respiratory and Critical Care Medicine, People's Hospital of Yingshang, Fuyang, Anhui 236000, China
| | - Min-Min Tang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Dong-Xu Hua
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Jin Yang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei, Anhui 230032, China.
| | - Hui Zhao
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China.
| | - Lin Fu
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Institute of Respiratory Diseases, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China; Department of Toxicology, Anhui Medical University, Hefei, Anhui 230032, China.
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Di Sotto A, Gullì M, Minacori M, Mancinelli R, Garzoli S, Percaccio E, Incocciati A, Romaniello D, Mazzanti G, Eufemi M, Di Giacomo S. β-Caryophyllene Counteracts Chemoresistance Induced by Cigarette Smoke in Triple-Negative Breast Cancer MDA-MB-468 Cells. Biomedicines 2022; 10:biomedicines10092257. [PMID: 36140359 PMCID: PMC9496176 DOI: 10.3390/biomedicines10092257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/03/2022] [Accepted: 09/07/2022] [Indexed: 11/26/2022] Open
Abstract
Exposure to cigarette smoke (CS) has been associated with an increased risk of fatal breast cancers and recurrence, along with chemoresistance and chemotherapy impairment. This strengthens the interest in chemopreventive agents to be exploited both in healthy and oncological subjects to prevent or repair CS damage. In the present study, we evaluated the chemopreventive properties of the natural sesquiterpene β-caryophyllene towards the damage induced by cigarette smoke condensate (CSC) in triple negative breast cancer MDA-MB-468 cells. Particularly, we assessed the ability of the sesquiterpene to interfere with the mechanisms exploited by CSC to promote cell survival and chemoresistance, including genomic instability, cell cycle progress, autophagy/apoptosis, cell migration and related pathways. β-Caryophyllene was found to be able to increase the CSC-induced death of MDA-MB-468 cells, likely triggering oxidative stress, cell cycle arrest and apoptosis; moreover, it hindered cell recovery, autophagy activation and cell migration; at last, a marked inhibition of the signal transducer and activator of transcription 3 (STAT3) activation was highlighted: this could represent a key mechanism of the chemoprevention by β-caryophyllene. Although further studies are required to confirm the in vivo efficacy of β-caryophyllene, the present results suggest a novel strategy to reduce the harmful effect of smoke in cancer patients and to improve the survival expectations in breast cancer women.
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Affiliation(s)
- Antonella Di Sotto
- Department of Physiology and Pharmacology “V. Erspamer”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Correspondence: (A.D.S.); (G.M.)
| | - Marco Gullì
- Department of Physiology and Pharmacology “V. Erspamer”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Marco Minacori
- Department of Biochemical Science “A. Rossi Fanelli”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Romina Mancinelli
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Stefania Garzoli
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Ester Percaccio
- Department of Physiology and Pharmacology “V. Erspamer”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Alessio Incocciati
- Department of Biochemical Science “A. Rossi Fanelli”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Donatella Romaniello
- Department of Biochemical Science “A. Rossi Fanelli”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, 40138 Bologna, Italy
| | - Gabriela Mazzanti
- Department of Physiology and Pharmacology “V. Erspamer”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Correspondence: (A.D.S.); (G.M.)
| | - Margherita Eufemi
- Department of Biochemical Science “A. Rossi Fanelli”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Silvia Di Giacomo
- Department of Physiology and Pharmacology “V. Erspamer”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
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Chmielowiec J, Chmielowiec K, Strońska-Pluta A, Suchanecka A, Humińska-Lisowska K, Lachowicz M, Niewczas M, Białecka M, Śmiarowska M, Grzywacz A. Methylation in the Promoter Region of the Dopamine Transporter DAT1 Gene in People Addicted to Nicotine. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148602. [PMID: 35886451 PMCID: PMC9321476 DOI: 10.3390/ijerph19148602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/30/2022] [Accepted: 07/12/2022] [Indexed: 01/27/2023]
Abstract
The dopaminergic system is a crucial element of the addiction processes. The dopamine transporter modulates the dynamics and levels of released dopamine in the synaptic cleft. Therefore, regulation of dopamine transporter (DAT1) gene expression is critical for maintaining homeostasis in the dopaminergic system. The aim of our study is evaluation of the methylation status of 33 CpG islands located in the DAT1 gene promoter region related to nicotine dependency. We investigated 142 nicotine-dependent subjects and 238 controls. Our results show that as many as 14 of the 33 CpG islands tested had statistically significantly higher methylation in the nicotine-dependent group compared to the control group. After applying Bonferroni correction, the total number of methylation sites was also significantly higher in the dependent subjects group. The analysis of the methylation status of particular CpG sites revealed a new direction of research regarding the biological aspects of nicotine addiction.
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Affiliation(s)
- Jolanta Chmielowiec
- Department of Hygiene and Epidemiology, Collegium Medicum, University of Zielona Góra, 65-046 Zielona Gora, Poland; (J.C.); (K.C.)
| | - Krzysztof Chmielowiec
- Department of Hygiene and Epidemiology, Collegium Medicum, University of Zielona Góra, 65-046 Zielona Gora, Poland; (J.C.); (K.C.)
| | - Aleksandra Strońska-Pluta
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (A.S.-P.); (A.S.)
| | - Aleksandra Suchanecka
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (A.S.-P.); (A.S.)
| | - Kinga Humińska-Lisowska
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Milena Lachowicz
- Department of Psychology, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Marta Niewczas
- Faculty of Physical Education, University of Rzeszow, 35-959 Rzeszow, Poland;
| | - Monika Białecka
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, 70-111 Szczecin, Poland; (M.B.); (M.Ś.)
| | - Małgorzata Śmiarowska
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, 70-111 Szczecin, Poland; (M.B.); (M.Ś.)
| | - Anna Grzywacz
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (A.S.-P.); (A.S.)
- Correspondence: ; Tel.: +48-91441-47-46
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8
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Impact of superovulation and in vitro fertilization on LINE-1 copy number and telomere length in C57BL/6 J mice blastocysts. Mol Biol Rep 2022; 49:4909-4917. [PMID: 35316424 DOI: 10.1007/s11033-022-07351-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 03/09/2022] [Indexed: 12/09/2022]
Abstract
OBJECTIVE Millions of babies have been conceived by IVF, yet debate about its safety to offspring continues. We hypothesized that superovulation and in vitro fertilization (IVF) promote genomic changes, including altered telomere length (TL) and activation of the retrotransposon LINE-1 (L1), and tested this hypothesis in a mouse model. MATERIAL AND METHODS Experimental study analyzing TL and L1 copy number in C57BL/6 J mouse blastocysts in vivo produced from natural mating cycles (N), in vivo produced following superovulation (S), or in vitro produced following superovulation (IVF). We also examined the effects of prolonged culture on TL and L1 copy number in the IVF group comparing blastocysts cultured 96 h versus blastocysts cultured 120 h. TL and L1 copy number were measured by Real Time PCR. RESULTS TL in S (n = 77; Mean: 1.50 ± 1.15; p = 0.0007) and IVF (n = 82; Mean: 1.72 ± 1.44; p < 0.0001) exceeded that in N (n = 16; Mean: 0.61 ± 0.27). TL of blastocysts cultured 120 h (n = 15, Mean: 2.14 ± 1.05) was significantly longer than that of embryos cultured for 96 h (n = 67, Mean: 1.63 ± 1.50; p = 0.0414). L1 copy number of blastocysts cultured for 120 h (n = 15, Mean: 1.71 ± 1.49) exceeded that of embryos cultured for 96 h (n = 67, Mean: 0.95 ± 1.03; p = 0.0162). CONCLUSIONS Intriguingly ovarian stimulation, alone or followed by IVF, produced embryos with significantly longer telomeres compared to in vivo, natural cycle-produced embryos. The significance of this enriched telomere endowment for the health and longevity of offspring born from IVF merit future studies.
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Liu Y, Wang J, Huang Z, Liang J, Xia Q, Xia Q, Liu X. Environmental pollutants exposure: A potential contributor for aging and age-related diseases. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 83:103575. [PMID: 33385577 DOI: 10.1016/j.etap.2020.103575] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/13/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
Telomeres are "protective messengers" at the ends of eukaryotic chromosomes that protect them from degradation, end to end fusion and recombination. Admittedly, telomeres progressively shorten with age that can also be significantly accelerated by pathological conditions, which are often considered as potential contributors for cellular senescence. It is commonly believed that constant accumulation of senescent cells may lead to dysfunctional tissues and organs, thereby accelerating aging process and subsequent occurrence of age-related diseases. In particular, epidemiological data has indicated a significant association between environmental pollutants exposure and a high incidence of age-related diseases. Moreover, there is growing evidence that environmental toxicity has a detrimental impact on telomere length. Overall, a consensus is emerging that environmental pollutants exposure could lead to accelerated telomere erosion and further induce premature senescence, which may be responsible for the acceleration of aging and the high morbidity and mortality rates of age-related diseases.
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Affiliation(s)
- Yaru Liu
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China; The Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, 230022, China
| | - Jiequan Wang
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, Anhui, 230000, China; Department of Pharmacy, Anhui Mental Health Center, Hefei, Anhui, 230000, China; Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, Anhui, 230000, China
| | - Zhaogang Huang
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China; The Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, 230022, China
| | - Jun Liang
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, Anhui, 230000, China; Department of Pharmacy, Anhui Mental Health Center, Hefei, Anhui, 230000, China; Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, Anhui, 230000, China
| | - Qingrong Xia
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, Anhui, 230000, China; Department of Pharmacy, Anhui Mental Health Center, Hefei, Anhui, 230000, China; Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, Anhui, 230000, China
| | - Quan Xia
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China; The Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, 230022, China.
| | - Xinhua Liu
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China.
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Uppuluri L, Varapula D, Young E, Riethman H, Xiao M. Single-molecule telomere length characterization by optical mapping in nano-channel array: Perspective and review on telomere length measurement. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 82:103562. [PMID: 33310082 PMCID: PMC8500550 DOI: 10.1016/j.etap.2020.103562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/02/2020] [Accepted: 12/08/2020] [Indexed: 05/11/2023]
Abstract
In humans, the telomere consists of tandem 5'TTAGGG3' DNA repeats on both ends of all 46 chromosomes. Telomere shortening has been linked to aging and age-related diseases. Similarly, telomere length changes have been associated with chemical exposure, molecular-level DNA damage, and tumor development. Telomere elongation has been associated to tumor development, caused due to chemical exposure and molecular-level DNA damage. The methods used to study these effects mostly rely on average telomere length as a biomarker. The mechanisms regulating subtelomere-specific and haplotype-specific telomere lengths in humans remain understudied and poorly understood, primarily because of technical limitations in obtaining these data for all chromosomes. Recent studies have shown that it is the short telomeres that are crucial in preserving chromosome stability. The identity and frequency of specific critically short telomeres potentially is a useful biomarker for studying aging, age-related diseases, and cancer. Here, we will briefly review the role of telomere length, its measurement, and our recent single-molecule telomere length measurement assay. With this assay, one can measure individual telomere lengths as well as identify their physically linked subtelomeric DNA. This assay can also positively detect telomere loss, characterize novel subtelomeric variants, haplotypes, and previously uncharacterized recombined subtelomeres. We will also discuss its applications in aging cells and cancer cells, highlighting the utility of the single molecule telomere length assay.
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Affiliation(s)
- Lahari Uppuluri
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Dharma Varapula
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Eleanor Young
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Harold Riethman
- Medical Diagnostic and Translational Sciences, Old Dominion University, Norfolk, VA, USA.
| | - Ming Xiao
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA; Institute of Molecular Medicine and Infectious Disease, School of Medicine, Drexel University, Philadelphia, PA, USA.
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11
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Silva CP, Kamens HM. Cigarette smoke-induced alterations in blood: A review of research on DNA methylation and gene expression. Exp Clin Psychopharmacol 2021; 29:116-135. [PMID: 32658533 PMCID: PMC7854868 DOI: 10.1037/pha0000382] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Worldwide, smoking remains a threat to public health, causing preventable diseases and premature mortality. Cigarette smoke is a powerful inducer of DNA methylation and gene expression alterations, which have been associated with negative health consequences. Here, we review the current knowledge on smoking-related changes in DNA methylation and gene expression in human blood samples. We identified 30 studies focused on the association between active smoking, DNA methylation modifications, and gene expression alterations. Overall, we identified 1,758 genes with differentially methylated sites (DMS) and differentially expressed genes (DEG) between smokers and nonsmokers, of which 261 were detected in multiple studies (≥4). The most frequently (≥10 studies) reported genes were AHRR, GPR15, GFI1, and RARA. Functional enrichment analysis of the 261 genes identified the aryl hydrocarbon receptor repressor and T cell pathways (T helpers 1 and 2) as influenced by smoking status. These results highlight specific genes for future mechanistic and translational research that may be associated with cigarette smoke exposure and smoking-related diseases. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Affiliation(s)
- Constanza P. Silva
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, Pennsylvania, 16802, United States of America
| | - Helen M. Kamens
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, Pennsylvania, 16802, United States of America.,Correspondence concerning this article should be addressed to Helen M. Kamens, 228 Biobehavioral Health Building, The Pennsylvania State University, University Park, PA 16802; ; Phone number: 814-865-1269; Fax number: 814-863-7525
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12
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Ratliff WA, Saykally JN, Keeley KL, Driscoll DC, Murray KE, Okuka M, Mervis RF, Delic V, Citron BA. Sidestream Smoke Affects Dendritic Complexity and Astrocytes After Model Mild Closed Head Traumatic Brain Injury. Cell Mol Neurobiol 2021; 42:1453-1463. [PMID: 33417143 DOI: 10.1007/s10571-020-01036-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 12/28/2020] [Indexed: 11/26/2022]
Abstract
Mild traumatic brain injuries can have long-term consequences that interfere with the life of the patient and impose a burden on our health care system. Oxidative stress has been identified as a contributing factor for the progression of neurodegeneration following TBI. A major source of oxidative stress for many veterans is cigarette smoking and second-hand smoke, which has been shown to have an effect on TBI recovery. To examine the potential influences of second-hand smoke during recovery from TBI, we utilized a mouse model of closed head injury, followed by repeated exposure to cigarette smoke and treatment with a neuroprotective antioxidant. We found that neither the mild injuries nor the smoke exposure produced axonal damage detectable with amino cupric silver staining. However, complexity in the dendritic arbors was significantly reduced after mild TBI plus smoke exposure. In the hippocampus, there were astrocytic responses, including Cyp2e1 upregulation, after the injury and tobacco smoke insult. This study provides useful context for the importance of lifestyle changes, such as reducing or eliminating cigarette smoking, during recovery from TBI.
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Affiliation(s)
- Whitney A Ratliff
- Laboratory of Molecular Biology, Research and Development 151, Bay Pines VA Healthcare System, Bay Pines, FL, 33744, USA
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, 33612, USA
| | - Jessica N Saykally
- Laboratory of Molecular Biology, Research and Development 151, Bay Pines VA Healthcare System, Bay Pines, FL, 33744, USA
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, 33612, USA
| | - Kristen L Keeley
- Laboratory of Molecular Biology, Research and Development 151, Bay Pines VA Healthcare System, Bay Pines, FL, 33744, USA
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, 33612, USA
| | - David C Driscoll
- Laboratory of Molecular Biology, Research and Development 151, Bay Pines VA Healthcare System, Bay Pines, FL, 33744, USA
| | - Kathleen E Murray
- VA New Jersey Health Care System, Research & Development, East Orange, NJ, 07018, USA
- Department of Pharmacology, Physiology, & Neuroscience, Rutgers - New Jersey Medical School, Newark, NJ, 07103, USA
| | - Maja Okuka
- Department of Obstetrics and Gynecology, University of South Florida Morsani College of Medicine, Tampa, FL, 33612, USA
| | | | - Vedad Delic
- VA New Jersey Health Care System, Research & Development, East Orange, NJ, 07018, USA
- Department of Pharmacology, Physiology, & Neuroscience, Rutgers - New Jersey Medical School, Newark, NJ, 07103, USA
| | - Bruce A Citron
- Laboratory of Molecular Biology, Research and Development 151, Bay Pines VA Healthcare System, Bay Pines, FL, 33744, USA.
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, 33612, USA.
- VA New Jersey Health Care System, Research & Development, East Orange, NJ, 07018, USA.
- Department of Pharmacology, Physiology, & Neuroscience, Rutgers - New Jersey Medical School, Newark, NJ, 07103, USA.
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13
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Zhan S, Huang J. Effects of Cigarette Smoking on Preimplantation Embryo Development. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1300:137-150. [PMID: 33523432 DOI: 10.1007/978-981-33-4187-6_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
In this chapter, we first gave a brief introduction to the detriments of cigarette smoking, with an emphasis on its adverse effects on female reproductive health. Then, we outlined recent advances about the impacts of cigarette smoke on preimplantation embryo development. Additionally, toxicities of cadmium and benzo(a)pyrene (BaP) at this specific developmental window were also discussed, to illustrate the potential mechanisms involved in cigarette smoke-associated embryotoxicity. Finally, we provide an overview of the issues to be solved in the future research. Further studies about the molecular mechanism of cigarette smoking-associated female infertility may provide vital insights into developing new interventions for the women smokers and thus improving their reproductive outcomes.
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Affiliation(s)
- Shaoquan Zhan
- Center for Reproductive Medicine, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Junjiu Huang
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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14
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Mo J, Au DWT, Wan MT, Shi J, Zhang G, Winkler C, Kong RYC, Seemann F. Multigenerational Impacts of Benzo[ a]pyrene on Bone Modeling and Remodeling in Medaka ( Oryzias latipes). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12271-12284. [PMID: 32840350 DOI: 10.1021/acs.est.0c02416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ancestral benzo[a]pyrene (BaP) (1 μg/L, 21 days) exposure has previously been shown to cause skeletal deformities in medaka (Oryzias latipes) larvae in the F1-F3 generation. However, when and how this deformity is induced during bone development remain to be elucidated. The col10a1:nlGFP/osx:mCherry double transgenic medaka model was employed to determine the temporal and spatial changes of col10a1:nlGFP- positive osteochondral progenitor cells (OPCs) and osx:mCherry-positive premature osteoblasts (POBs) [8 days postfertilization (dpf)-31 dpf] in combination with changes in bone mineralization at the tissue level. Ancestral BaP exposure delayed the development of col10a1:nlGFP- and osx:mCherry-positive osteoblasts and reduced the abundance of col10a1:nlGFP-positive osteoblast progenitors and col10a1:nlGFP/osx:mCherry double-positive premature osteoblasts during critical windows of early vertebral bone formation, associated with reduced bone mineralization in embryos (14 dpf) and larvae (31 dpf), compressed vertebral segments in larvae (31 dpf), and reduced bone thickness in adult male medaka (6 months old) of the F1-F3 generations. Both Col10a1:nlGFP and osx:mCherry were identified as potential targets of epigenetic modifications underlying the transgenerational inheritance of BaP bone toxicity. The present study provides novel knowledge of the underlying mechanisms of transgenerational toxicity of BaP at the cellular level.
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Affiliation(s)
- Jiezhang Mo
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Doris Wai-Ting Au
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Miles Teng Wan
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Jingchun Shi
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Ge Zhang
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
| | - Christoph Winkler
- Department of Biological Sciences, National University of Singapore, 119077, Singapore
| | - Richard Yuen-Chong Kong
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Hong Kong Branch of the Guangdong Southern Marine Science and Engineering Laboratory (Guangzhou), Hong Kong SAR, China
- Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, Research Centre for the Oceans and Human Health, Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China
| | - Frauke Seemann
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Center for Coastal Studies and Department of Life Sciences, Texas A&M University-Corpus Christi, Corpus Christi, Texas 78412, United States
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15
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Huang L, Xiao X, Yao Y, Yu J, Chen Q, Liang P, Zhang Y. Benzo[a]pyrene promotes progression in tongue squamous cell carcinoma. Oral Dis 2020; 26:1649-1658. [PMID: 32557985 DOI: 10.1111/odi.13489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 05/13/2020] [Accepted: 05/27/2020] [Indexed: 01/01/2023]
Abstract
OBJECTIVES Benzo[a]pyrene (B[a]P) is a member of the polycyclic aromatic hydrocarbon (PAH) family. Although the potent carcinogenicity of high-dose B[a]P has been extensively reported, the effects of long-term exposure to B[a]P on the progression of tongue squamous cell carcinoma (TSCC) are poorly understood. METHODS In the present study, TSCC cells were treated with 5 or 50 nM of B[a]P for three months. The proliferation and chemoresistance of B[a]P-treated cells to 5-fluorouracil or cisplatin were detected by CCK8. The motility of the B[a]P-treated cells was evaluated with wound healing analysis, invasion assay, and three-dimensional culture in decellularized mouse tongue matrix. Xenograft assay was used to investigate the aggressiveness of B[a]P-treated cells. Immunofluorescence staining, terminal restriction fragment assay, and whole-genome sequence were used to determine the mutation spectrums. RESULTS Long-term 50 nM B[a]P-treated cells exhibited increased aggressiveness and chemoresistance to 5-fluorouracil or cisplatin. In addition, data from whole-genome sequencing demonstrated that C:T to A:T transitions were the predominant nucleotide substitutions occurred in 50 nM B[a]P-treated CAL27 cells. Furthermore, 102 non-synonymous or stop-gain mutations were enriched in the extracellular-matrix-receptor interactive pathway. CONCLUSIONS B[a]P exposure may contribute to genomic instability, and therefore, B[a]P may promote the progression of TSCC.
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Affiliation(s)
- Linxuan Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiaofen Xiao
- Department of Stomatology, Shenzhen People's Hospital, 2nd Clinical Medical College of Jinan University, Shenzhen, China
| | - Yupeng Yao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jianping Yu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qingjian Chen
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Puping Liang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yan Zhang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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16
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Telomere Length and Telomerase Activity in Foetal Membranes from Term and Spontaneous Preterm Births. Reprod Sci 2020; 27:411-417. [PMID: 32046424 DOI: 10.1007/s43032-019-00054-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/06/2019] [Indexed: 01/01/2023]
Abstract
The reduction of telomere length, the protective cap structures of chromosomes, is one of the biomarkers of senescence (a mechanism of ageing), and ageing of foetal gestational tissues is associated with both term and preterm parturition. A mechanism regulating telomere length is the activity of telomerase, an enzyme that adds telomere fragments during DNA replication and cell division; however, its role in regulating telomere length is not well studied in gestational tissues. The objective of this study is to correlate telomere length and telomerase activity in foetal membranes from term and spontaneous preterm births. Foetal membrane samples were collected from pregnant women experiencing term labour (TL), term not in labour (TNL), preterm premature rupture of membranes (pPROM) and spontaneous preterm labour (PTL) with intact membranes (n = 20/group). Telomere length and telomerase activity were analyzed by relative quantification (T/S), real-time PCR and PCR-based fluorometric detection, respectively. Data were analyzed by ANOVA or the Kruskal-Wallis test. Demographic variables were not statistically different among the groups. Foetal membranes from the TL group showed telomere length reduction compared with those from the others (p < 0.0002). Telomerase activity did not change in foetal membranes irrespective of pregnancy outcome. Telomere shortening in foetal membranes is suggestive of senescence associated with triggering of labour at term; however, this is likely independent of telomerase activity, while prematurity may be associated with senescence, but due to other mechanisms than telomere length reduction in foetal membranes.
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17
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Mizuno Y, Konishi S, Imai H, Fujimori E, Kojima N, Yoshinaga J. Cadmium Exposure and Blood Telomere Length in Female University Students in Japan. Biol Trace Elem Res 2019; 192:98-105. [PMID: 30721396 DOI: 10.1007/s12011-019-1656-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 01/29/2019] [Indexed: 01/07/2023]
Abstract
Cadmium is a toxic metal found ubiquitously throughout the world. Our study evaluated whether cadmium exposure was associated with telomere length in 73 female university students. Determination of telomere length was performed by quantitative polymerase chain reaction using DNA in blood. Urinary cadmium concentration was measured by inductively coupled plasma mass spectrometry. The students' physiological attributes and lifestyle were surveyed by means of a self-administered questionnaire. The geometric mean of urinary cadmium concentration was 0.312 μg/g creatinine, which was lower than the levels previously reported for Japan. Urinary cadmium concentration was not significantly associated with telomere length, though the exposure level of the present subjects was similar to that of previous study subjects which found significantly negative associations. It is possible that other factors affected telomere length in this study population.
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Affiliation(s)
- Yuki Mizuno
- Department of Human Ecology, School of International Health, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Shoko Konishi
- Department of Human Ecology, School of International Health, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
- Department of Anthropology, University of Washington, Seattle, USA
| | - Hideki Imai
- Department of Nursing, Tokyo Healthcare University, Tokyo, Japan
| | - Eiji Fujimori
- National Environmental Research and Training Institute, Tokorozawa City, Saitama, Japan
| | - Nobuhiko Kojima
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura, Ora, Gunma, 374-0193, Japan
| | - Jun Yoshinaga
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura, Ora, Gunma, 374-0193, Japan.
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18
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Role of arsenic, lead and cadmium on telomere length and the risk of carcinogenesis: a mechanistic insight. THE NUCLEUS 2019. [DOI: 10.1007/s13237-019-00280-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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19
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Abstract
Esophageal cancer (EC) is an extremely aggressive cancer with one of the highest mortality rates. The cancer is generally only diagnosed at the later stages and has a poor 5-year survival rate due to the limited treatment options. China and South Africa are two countries with a very high prevalence rate of EC. EC rates in South Africa have been on the increase, and esophageal squamous cell carcinoma is the predominant subtype and a primary cause of cancer-related deaths in the black and male mixed ancestry populations in South Africa. The incidence of EC is highest in the Eastern Cape Province, especially in the rural areas such as the Transkei, where the consumption of foods contaminated with Fusarium verticillioides is thought to play a major contributing role to the incidence of EC. China is responsible for almost half of all new cases of EC globally. In China, the prevalence of EC varies greatly. However, the two main areas of high prevalence are the southern Taihang Mountain area (Linxian, Henan Province) and the north Jiangsu area. In both countries, environmental toxins play a major role in increasing the chance that an individual will develop EC. These associative factors include tobacco use, alcohol consumption, nutritional deficiencies and exposure to environmental toxins. However, genetic polymorphisms also play a role in predisposing individuals to EC. These include single-nucleotide polymorphisms that can be found in both protein-coding genes and in non-coding sequences such as miRNAs. The aim of this review is to summarize the contribution of genetic polymorphisms to EC in South Africa and to compare and contrast this to the genetic polymorphisms observed in EC in the most comprehensively studied population group, the Chinese.
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Affiliation(s)
- Mohammed Alaouna
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Rodney Hull
- Research, Innovation & Engagements Portfolio, Mangosuthu University of Technology, Durban, South Africa,
| | - Clement Penny
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Zodwa Dlamini
- Research, Innovation & Engagements Portfolio, Mangosuthu University of Technology, Durban, South Africa,
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20
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Keefe DL. Telomeres and genomic instability during early development. Eur J Med Genet 2019; 63:103638. [PMID: 30862510 DOI: 10.1016/j.ejmg.2019.03.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/05/2019] [Indexed: 12/21/2022]
Abstract
Genomic instability is widespread during early embryo development. Aneuploidy, mosaicism, and copy number variants (CNVs) commonly appear in human preimplantation embryos. Both age-dependent meiotic aneuploidy and age-independent mitotic aneuploidy and CNVs occur In human embryos. Telomere attrition, which contributes to genomic instability in somatic cells, also may promote genomic instability in preimplantation embryos. Telomere dynamics during gametogenesis are strikingly dimorphic between females and males. Sperm telomeres lengthen with advancing paternal age, while oocyte telomeres are among the shortest in the body. Spermatogonia express telomerase activity throughout the life of the male, while oocytes and cleavage stage embryos express low or un-measureable levels of telomerase activity. Telomere attrition in oocytes contributes to meiotic dysfunction, including spindle dysmorphologies, reduced synapsis and chiasmata, as well as delayed, arrested and fragmented embryos. Cleavage stage embryos, with such inefficient telomere reconstitution, likely undergo NHEJ, which produces anaphase lag, chromosome bridges, micronuclei, and genomic instability, including mosaicism and CNVs. Cleavage stage embryos reconstitute the short telomeres inherited from their mothers by Alternative Lengthening of Telomeres (ALT), a DNA recombination based method involving RAD 50, MRE 11, Werner and Bloom proteins, as well as telomere sister chromatid exchange. ALT robustly reconstitutes telomeres, but also predisposes to genomic instability.
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Affiliation(s)
- David L Keefe
- Department of Ob/Gyn, NYU Langone Medical Center, 550 First Avenue, NBV 9N1A, New York, 10012, New York, USA.
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21
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Grau-Perez M, Zhao J, Pierce B, Francesconi KA, Goessler W, Zhu Y, An Q, Umans J, Best L, Cole SA, Navas-Acien A, Tellez-Plaza M. Urinary metals and leukocyte telomere length in American Indian communities: The Strong Heart and the Strong Heart Family Study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 246:311-318. [PMID: 30557805 PMCID: PMC6363843 DOI: 10.1016/j.envpol.2018.12.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 12/02/2018] [Accepted: 12/04/2018] [Indexed: 05/03/2023]
Abstract
INTRODUCTION While several mechanisms may explain metal-related health effects, the exact cellular processes are not fully understood. We evaluated the association between leukocyte telomere length (LTL) and urine arsenic (ΣAs), cadmium (Cd) and tungsten (W) exposure in the Strong Heart Study (SHS, N = 1702) and in the Strong Heart Family Study (SHFS, N = 1793). METHODS Urine metal concentrations were measured using ICP-MS. Arsenic exposure was assessed as the sum of inorganic arsenic, monomethylarsonate and dimethylarsinate levels (ΣAs). LTL was measured by quantitative polymerase chain reaction. RESULTS In the SHS, median levels were 1.09 for LTL, and 8.8, 1.01 and 0.11 μg/g creatinine for ΣAs, Cd, and W, respectively. In the SHFS, median levels were 1.01 for LTL, and 4.3, 0.44, and 0.10 μg/g creatinine. Among SHS participants, increased urine ΣAs, Cd, and W was associated with shorter LTL. The adjusted geometric mean ratio (95% confidence interval) of LTL per an increase equal to the difference between the percentiles 90th and 10th in metal distributions was 0.85 (0.79, 0.92) for ΣAs, 0.91 (0.84, 1.00) for Cd and 0.93 (0.88, 0.98) for W. We observed no significant associations among SHFS participants. The findings also suggest that the association between arsenic and LTL might be differential depending on the exposure levels or age. CONCLUSIONS Additional research is needed to confirm the association between metal exposures and telomere length.
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Affiliation(s)
- Maria Grau-Perez
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA; Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain.
| | - Jinying Zhao
- Department of Epidemiology, College of Public Health and Health Professions, College of Medicine, University of Florida, Gainesville, FL, USA; Public Health Research, Division of Community Health Promotion, Florida Department of Health, Tallahassee, FL, USA
| | - Brandon Pierce
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | | | | | - Yun Zhu
- Department of Epidemiology, College of Public Health and Health Professions, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Qiang An
- Public Health Research, Division of Community Health Promotion, Florida Department of Health, Tallahassee, FL, USA
| | - Jason Umans
- Georgetown-Howard Universities Center for Clinical and Translational Science, Washington DC, USA; MedStar Health Research Institute, Hyattsville, MD, USA
| | - Lyle Best
- Department of Epidemiology, Missouri Breaks Industries Research Inc., Timber Lake, SD, USA
| | - Shelley A Cole
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA; Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA.
| | - Maria Tellez-Plaza
- Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain; Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA; Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institutes, Madrid, Spain
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Abstract
PURPOSE OF REVIEW Genomic mutations in telomere-related genes have been recognized as a cause of familial forms of idiopathic pulmonary fibrosis (IPF). However, it has become increasingly clear that telomere syndromes and telomere shortening are associated with various types of pulmonary disease. Additionally, it was found that also single nucleotide polymorphisms (SNPs) in telomere-related genes are risk factors for the development of pulmonary disease. This review focuses on recent updates on pulmonary phenotypes associated with genetic variation in telomere-related genes. RECENT FINDINGS Genomic mutations in seven telomere-related genes cause pulmonary disease. Pulmonary phenotypes associated with these mutations range from many forms of pulmonary fibrosis to emphysema and pulmonary vascular disease. Telomere-related mutations account for up to 10% of sporadic IPF, 25% of familial IPF, 10% of connective-tissue disease-associated interstitial lung disease, and 1% of COPD. Mixed disease forms have also been found. Furthermore, SNPs in TERT, TERC, OBFC1, and RTEL1, as well as short telomere length, have been associated with several pulmonary diseases. Treatment of pulmonary disease caused by telomere-related gene variation is currently based on disease diagnosis and not on the underlying cause. SUMMARY Pulmonary phenotypes found in carriers of telomere-related gene mutations and SNPs are primarily pulmonary fibrosis, sometimes emphysema and rarely pulmonary vascular disease. Genotype-phenotype relations are weak, suggesting that environmental factors and genetic background of patients determine disease phenotypes to a large degree. A disease model is presented wherever genomic variation in telomere-related genes cause specific pulmonary disease phenotypes whenever triggered by environmental exposure, comorbidity, or unknown factors.
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Møller P, Wils RS, Jensen DM, Andersen MHG, Roursgaard M. Telomere dynamics and cellular senescence: an emerging field in environmental and occupational toxicology. Crit Rev Toxicol 2018; 48:761-788. [DOI: 10.1080/10408444.2018.1538201] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Regitze Sølling Wils
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Ditte Marie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Martin Roursgaard
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
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Hamad MF, Dayyih WAA, Laqqan M, AlKhaled Y, Montenarh M, Hammadeh ME. The status of global DNA methylation in the spermatozoa of smokers and non-smokers. Reprod Biomed Online 2018; 37:581-589. [PMID: 30366840 DOI: 10.1016/j.rbmo.2018.08.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 01/06/2023]
Abstract
RESEARCH QUESTION Does regular smoking affect semen quality and the levels of DNA methylation in mature human spermatozoa? DESIGN Spermatozoa from 109 men were evaluated (55 smokers and 54 non-smokers). DNA was extracted from purified spermatozoa, and DNA methylation was quantified by enzyme-linked immunosorbent assay (ELISA). RESULTS Global DNA methylation of non-smokers is significantly lower (P < 0.001) than that of smokers (4.85 ± 2.72 and 7.08 ± 1.77 ng/μl, respectively). Moreover, the mean global DNA methylation levels were significantly correlated (r = 0.22;P = 0.02) with non-condensed chromatin in the spermatozoa. Levels of non-condensed chromatin were significantly higher (P < 0.001) in smokers (29.75 ± 9.38%) compared with non-smokers (20.96 ± 11.31%). Furthermore, global sperm DNA methylation was negatively correlated with high significance (P < 0.010) with sperm: count (r = -0.27), motility (r = -0.30) and vitality (r = -0.26). CONCLUSION Smoking interferes with DNA methylation. Also, DNA methylation is significantly correlated with sperm parameters and sperm non-condensed chromatin. These data emphasize another detrimental effect of smoking on male fertility. DNA methylation may, therefore, be considered as a fertility marker in men.
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Affiliation(s)
- Mohammed F Hamad
- Department of Basic Sciences, College of Science and Health Professions, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia; IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany; Department of Medical Biochemistry and Molecular Biology, Saarland University, Building 44, 66424, Homburg/Saar, Germany.
| | - Wael A Abu Dayyih
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Mohammad Laqqan
- IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany
| | - Yasir AlKhaled
- IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany
| | - Mathias Montenarh
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Building 44, 66424, Homburg/Saar, Germany
| | - Mohammed E Hammadeh
- IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany
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25
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Assadollahi V, Mohammadi E, Fathi F, Hassanzadeh K, Erfan MBK, Soleimani F, Banafshi O, Yosefi F, Allahvaisi O. Effects of cigarette smoke condensate on proliferation and pluripotency gene expression in mouse embryonic stem cells. J Cell Biochem 2018; 120:4071-4080. [PMID: 30269371 DOI: 10.1002/jcb.27692] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 08/27/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Embryonic stem cells (ESCs) are derived from the inner cell mass (ICM) of blastocysts. They can be used as valuable experimental models to test the effects of drugs, chemicals, and environmental contaminants such as cigarette smoke condensate (CSC) on preimplantation embryo development. The aim of this study was to evaluate the effect of CSC on ESCs derived from mice with different genetic backgrounds and maternal ages. METHODS The study groups consisted of mouse ESCs (mESCs) obtained from three sources: blastocysts developed from fertilized oocytes of two-month-old (2-C57) and six-month-old (6-C57) C57BL/6 inbred mice and those developed from fertilized oocytes of two-month-old (2-NMRI) NMRI outbred mice. The groups of mESCs were exposed to 0.04, 4, and 40 μg/mL CSC. After exposure, we measured cell viability by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay and real-time polymerase chain reaction for changes in expressions of Oct4, Sox2, Nanog, Ahr, Bax, Bcl2, TFAM, and POLG. The cell doubling time (DT) of these populations was also determined. RESULTS We observed that CSC changed proliferation and DT in the 2-C57 and 6-C57 cells. There was no change in 2-NMRI cells. Exposure to CSC caused changes in the gene expressions and induced apoptosis in all three cell lines. CONCLUSION Based on the results of the study, it can be concluded that CSC has an effect on the viability, DT and gene expression patterns in mouse ESCs and its effects vary based on the genetic background and maternal age of isolated mouse ESCs.
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Affiliation(s)
- Vahideh Assadollahi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Ebrahim Mohammadi
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.,Department of Occupational Health Engineering, Faculty of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Fardin Fathi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Kambiz Hassanzadeh
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mohamad Bager Khadem Erfan
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Farzad Soleimani
- Department of Biology, School of Natural Science, University of Tabriz, Tabriz, Iran
| | - Omid Banafshi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Fayeg Yosefi
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Ozra Allahvaisi
- Department of Anatomy, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Martens DS, Nawrot TS. Ageing at the level of telomeres in association to residential landscape and air pollution at home and work: a review of the current evidence. Toxicol Lett 2018; 298:42-52. [PMID: 29944903 DOI: 10.1016/j.toxlet.2018.06.1213] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/06/2018] [Accepted: 06/19/2018] [Indexed: 12/13/2022]
Abstract
Studies suggest that leukocyte telomere length is an index of systemic ageing. Here, we discuss telomere length as a marker of biological ageing in relation to residential landscape (greenness), residential air pollution and work-related exposures. Telomere lengths are memories of cumulative oxidative and inflammatory stress, and show to have inverse associations with the risk of non-communicable diseases. For this reason, telomeres are considered as markers of biological ageing. Studies at birth, in children, young adulthood, and elderly show that residential green space, lower traffic exposure and long-term lower exposure to particulate air pollution are associated with longer telomeres. Work-related exposures including exposure to toxic metals, polycyclic aromatic hydrocarbons and particulate matter are associated with shorter telomeres for a given age. In contrast to chronic exposures, evidence is present of the observation that recent exposure is associated with longer telomeres. Our overview shows that the magnitude of residential and work-related environmental factors on telomere length are often as important as many classical lifestyle factors.
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Affiliation(s)
- Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium; Department of Public Health & Primary Care, Leuven University, Leuven, Belgium.
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28
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Alkhaled Y, Laqqan M, Tierling S, Lo Porto C, Amor H, Hammadeh ME. Impact of cigarette-smoking on sperm DNA methylation and its effect on sperm parameters. Andrologia 2018; 50:e12950. [PMID: 29315717 DOI: 10.1111/and.12950] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2017] [Indexed: 12/15/2022] Open
Abstract
DNA methylation is an epigenetic modification of the genome. The purpose of this study was to determine the influence of cigarette-smoking on sperm DNA methylation from a genomewide survey of sperm samples and to ascertain its effect on sperm parameters. Twenty-eight sperm DNA samples (from 14 fertile smokers as a case study and 14 proven fertile nonsmokers as controls) were subjected to Infinium 450K BeadChip arrays to identify the changes in the DNA methylation level between the two groups. Then, deep bisulphite sequencing was used to validate five CpGs on 78 samples. The results from the Infinium 450K found that only 11 CpGs showed a significant difference in DNA methylation between the case and the control groups. Five CpGs of the eleven (cg00648582, cg0932376, cg19169023, cg23841288 and cg27391564) underwent deep bisulphite sequencing where cg00648582, related to the PGAM5 gene, and the cg23841288 CpGs, related to the PTPRN2 gene amplicons, showed a significant increase in their DNA methylation level in more than one CpG in the case group. In contrast, a significant decrease was found at cg19169023 and at its various neighbouring CpGs in the TYRO3 gene-related amplicons. Furthermore, this study demonstrated a significant correlation between the variation in sperm DNA methylation level and standard sperm parameters in the case group.
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Affiliation(s)
- Y Alkhaled
- Department of Obstetrics & Gynecology, University of Saarland, Saarbrucken, Germany
| | - M Laqqan
- Department of Obstetrics & Gynecology, University of Saarland, Saarbrucken, Germany
| | - S Tierling
- FR8.3 Life Science, Department of Genetics & Epigenetics, Saarland University, Saarbrucken, Germany
| | - C Lo Porto
- FR8.3 Life Science, Department of Genetics & Epigenetics, Saarland University, Saarbrucken, Germany
| | - H Amor
- Department of Obstetrics & Gynecology, University of Saarland, Saarbrucken, Germany
| | - M E Hammadeh
- Department of Obstetrics & Gynecology, University of Saarland, Saarbrucken, Germany
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Abstract
Human genetic variation is a major resource in forensics, but does not allow all forensically relevant questions to be answered. Some questions may instead be addressable via epigenomics, as the epigenome acts as an interphase between the fixed genome and the dynamic environment. We envision future forensic applications of DNA methylation analysis that will broaden DNA-based forensic intelligence. Together with genetic prediction of appearance and biogeographic ancestry, epigenomic lifestyle prediction is expected to increase the ability of police to find unknown perpetrators of crime who are not identifiable using current forensic DNA profiling.
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Affiliation(s)
- Athina Vidaki
- Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, Room Ee1051, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
| | - Manfred Kayser
- Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, Room Ee1051, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
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30
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Zhao Z, Xing X, Ou X, Liu X, Zhou R, Zhang H, Yang L, Zhuang Z, Su X, Lu Y, Jiang J, Yang Y, Cui D, He Y. DNA damage levels in electronics workers in Southern China: A micro-whole blood comet assay. Mutat Res 2017; 803-805:17-21. [PMID: 28759748 DOI: 10.1016/j.mrfmmm.2017.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/20/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
We evaluated DNA damage levels of different categories of workers exposed to hazards inside electronics factories in Southern China. To find out the most dangerous risk factor, a cross-sectional study was conducted on a total of 584 exposed subjects and 138 controls in an electronics factory in Southern China, where the electronics industry is prevalent. The exposed hazards included isopropanol (IPO), lead, noise, video display terminals (VDT), lead in a high-temperature (high-temp) environment, and IPO in a high-temp environment. DNA damage detection was performed by the micro-whole blood comet assay using peripheral blood. DNA damage levels were estimated by percent tail DNA (%T). Linear regression models were used to test DNA damage differences between exposed groups and control group with adjustments for potential confounding factors. The level of DNA damage was more significant in both lead in a high-temp and IPO in a high-temp environment groups than in that of the controls (p<0.05). The differences remained significant after stratifying by smoking status (p<0.05). There were no significant differences between groups exposed to IPO, lead, noise, VDT environment and controls. In conclusion, we identified potential risk factors for DNA damage to electronics workers. Special attention should be paid to workers exposed to IPO and lead in a high-temp environment.
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Affiliation(s)
- Zhiqiang Zhao
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiumei Xing
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiaoyan Ou
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xinxia Liu
- Prevention and Control Center for Occupational Diseases, Zhongshan Center for Disease Control and Prevention, Zhongshan, Guangdong, China
| | - Ridong Zhou
- Prevention and Control Center for Occupational Diseases, Zhongshan Center for Disease Control and Prevention, Zhongshan, Guangdong, China
| | - Huimin Zhang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Linqing Yang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Zhixiong Zhuang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Xiaolin Su
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yao Lu
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Jun Jiang
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yarui Yang
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Dong Cui
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yun He
- Guangzhou Key Laboratory of Environmental Pollution and Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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31
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Abstract
Implantation rate decreases and miscarriage rate increases with advancing maternal age. The oocyte must be the locus of reproductive aging because donation of oocytes from younger to older women abrogates the effects of aging on fecundity. Nuclear transfer experiments in a mouse model of reproductive aging show that the reproductive aging phenotype segregates with the nucleus rather than the cytoplasm. A number of factors within the nucleus have been hypothesized to mediate reproductive aging, including disruption of cohesions, reduced chiasma, aneuploidy, disrupted meiotic spindles, and DNA damage caused by chronic exposure to reactive oxygen species. We have proposed telomere attrition as a parsimonious way to explain these diverse effects of aging on oocyte function. Telomeres are repetitive sequences of DNA and associated proteins, which form a loop (t loop) at chromosome ends. Telomeres prevent the blunt end of DNA from triggering a DNA damage response. Previously, we showed that experimental telomere shortening phenocopies reproductive aging in mice. Telomere shortening causes reduced synapsis and chiasma, chromosome fusions, embryo arrest and fragmentation, and abnormal meiotic spindles. Telomere length of polar bodies predicts the fragmentation of human embryos. Telomerase, the reverse transcriptase capable of reconstituting shortened telomeres, is only minimally active in oocytes and preimplantation embryos. Intriguingly, during the first cell cycles following activation, telomeres robustly elongate via a DNA double-strand break mechanism called alternative lengthening of telomeres (ALTs). Alternative lengthening of telomere takes place even in telomerase-null mice. This mechanism of telomere elongation previously had been found only in cancer cells lacking telomerase activity. We propose that ALT elongates telomeres across generations but does so at the cost of extensive genomic instability in preimplantation embryos.
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Affiliation(s)
- David L Keefe
- Department of Obstetrics and Gynecology, NYU Langone Medical Center, New York, NY, USA
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32
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Nomura SJO, Robien K, Zota AR. Serum Folate, Vitamin B-12, Vitamin A, γ-Tocopherol, α-Tocopherol, and Carotenoids Do Not Modify Associations between Cadmium Exposure and Leukocyte Telomere Length in the General US Adult Population. J Nutr 2017; 147:538-548. [PMID: 28275103 PMCID: PMC5368581 DOI: 10.3945/jn.116.243162] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 11/21/2016] [Accepted: 02/06/2017] [Indexed: 01/10/2023] Open
Abstract
Background: Leukocyte telomere length (LTL) is a biomarker of the aging process and is associated with the risk of chronic disease. Higher exposure to cadmium may be associated with shorter LTL, and adequate nutrient concentrations may be associated with longer LTL; however, the potential interaction between metals and nutrients on LTL has yet to be examined.Objectives: The objective of this study was to evaluate whether serum concentrations of vitamins and carotenoids were associated with LTL, and whether they modified the association between blood cadmium and LTL in the US NHANES (1999-2002).Methods: We evaluated cross-sectional associations between LTL and serum concentrations of vitamin A, γ-tocopherol, α-tocopherol, folate, and vitamin B-12 (1999-2002; n = 7458) and α-carotene, β-carotene, β-cryptoxanthin, lutein + zeaxanthin, and lycopene (2001-2002; n = 4018) in a nationally representative sample of US adults (≥20 y of age) with the use of multivariable linear regression. We further investigated whether vitamin and carotenoid concentrations modified associations between blood cadmium and LTL with models stratified by serum nutrient concentrations and the inclusion of an interaction term.Results: Blood cadmium was inversely associated with LTL (percentage of LTL difference per 1 μg/L = -3.74; 95% CI: -5.35, -2.10). Serum vitamin A was positively associated (percentage of LTL difference per 1 μg/L = 4.01; 95% CI: 0.26, 7.90) and γ-tocopherol was inversely associated (percentage of LTL difference per 1 μg/dL = -2.49; 95% CI: -4.21, -0.73) with LTL. Serum folate (P-trend = 0.06) and α-tocopherol (P-trend = 0.10) were marginally positively associated with LTL, whereas vitamin B-12 (P-trend = 0.78) was not associated with LTL. Serum carotenoids were generally positively associated with LTL. Serum vitamin and carotenoid concentrations did not modify blood cadmium and LTL associations (P-interaction > 0.10).Conclusions: Results from this cross-sectional study suggest that exposure to cadmium and certain nutrients may be associated with LTL in US adults, but the serum concentrations of the vitamins and carotenoids evaluated did not modify cross-sectional associations between cadmium exposure and LTL.
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Affiliation(s)
- Sarah JO Nomura
- Office of Minority Health and Health Disparities Research, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC; and,To whom correspondence should be addressed. E-mail:
| | - Kim Robien
- Department of Exercise and Nutrition Sciences and
| | - Ami R Zota
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC
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Lee HY, Lee SD, Shin KJ. Forensic DNA methylation profiling from evidence material for investigative leads. BMB Rep 2017; 49:359-69. [PMID: 27099236 PMCID: PMC5032003 DOI: 10.5483/bmbrep.2016.49.7.070] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Indexed: 12/30/2022] Open
Abstract
DNA methylation is emerging as an attractive marker providing investigative leads to solve crimes in forensic genetics. The identification of body fluids that utilizes tissue-specific DNA methylation can contribute to solving crimes by predicting activity related to the evidence material. The age estimation based on DNA methylation is expected to reduce the number of potential suspects, when the DNA profile from the evidence does not match with any known person, including those stored in the forensic database. Moreover, the variation in DNA implicates environmental exposure, such as cigarette smoking and alcohol consumption, thereby suggesting the possibility to be used as a marker for predicting the lifestyle of potential suspect. In this review, we describe recent advances in our understanding of DNA methylation variations and the utility of DNA methylation as a forensic marker for advanced investigative leads from evidence materials. [BMB Reports 2016; 49(7): 359-369]
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Affiliation(s)
- Hwan Young Lee
- Department of Forensic Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Soong Deok Lee
- Department of Forensic Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Kyoung-Jin Shin
- Department of Forensic Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
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Weng DY, Chen J, Taslim C, Hsu PC, Marian C, David SP, Loffredo CA, Shields PG. Persistent alterations of gene expression profiling of human peripheral blood mononuclear cells from smokers. Mol Carcinog 2016; 55:1424-37. [PMID: 26294040 PMCID: PMC4860148 DOI: 10.1002/mc.22385] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 07/04/2015] [Accepted: 08/03/2015] [Indexed: 01/12/2023]
Abstract
The number of validated biomarkers of tobacco smoke exposure is limited, and none exist for tobacco-related cancer. Additional biomarkers for smoke, effects on cellular systems in vivo are needed to improve early detection of lung cancer, and to assist the Food and Drug Administration in regulating exposures to tobacco products. We assessed the effects of smoking on the gene expression using human cell cultures and blood from a cross-sectional study. We profiled global transcriptional changes in cultured smokers' peripheral blood mononuclear cells (PBMCs) treated with cigarette smoke condensate (CSC) in vitro (n = 7) and from well-characterized smokers' blood (n = 36). ANOVA with adjustment for covariates and Pearson correlation were used for statistical analysis in this study. CSC in vitro altered the expression of 1 178 genes (177 genes with > 1.5-fold-change) at P < 0.05. In vivo, PBMCs of heavy and light smokers differed for 614 genes (29 with > 1.5-fold-change) at P < 0.05 (309 remaining significant after adjustment for age, race, and gender). Forty-one genes were persistently altered both in vitro and in vivo, 22 having the same expression pattern reported for non-small cell lung cancer. Our data provides evidence that persistent alterations of gene expression in vitro and in vivo may relate to carcinogenic effects of cigarette smoke, and the identified genes may serve as potential biomarkers for cancer. The use of an in vitro model to corroborate results from human studies provides a novel way to understand human exposure and effect. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Daniel Y Weng
- Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Jinguo Chen
- Center for Human Immunology, National Institute of Health, Bethesda, Maryland
| | - Cenny Taslim
- Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Ping-Ching Hsu
- Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Catalin Marian
- Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
- University of Medicine and Pharmacy, Timisoara, Romania
| | - Sean P David
- Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Christopher A Loffredo
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, District of Columbia
| | - Peter G Shields
- Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio.
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Fillman T, Shimizu-Furusawa H, Ng CFS, Parajuli RP, Watanabe C. Association of cadmium and arsenic exposure with salivary telomere length in adolescents in Terai, Nepal. ENVIRONMENTAL RESEARCH 2016; 149:8-14. [PMID: 27155138 DOI: 10.1016/j.envres.2016.04.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 04/26/2016] [Accepted: 04/27/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Cadmium and arsenic are ubiquitous metals commonly found in the environment which can harm human health. A growing body of research shows telomere length as a potential biomarker of future disease risk. Few studies have examined the effects of metals on telomere length and none have focused on adolescents. OBJECTIVES In this study, the impact of cadmium and arsenic on salivary telomere length was studied in adolescents in Terai, Nepal. METHODS Adolescents aged 12-16 years old (n=351)were recruited where questionnaire interviews and both saliva and urine collection took place. Telomere length was determined by quantitative polymerase chain reaction using DNA extracted from saliva. Urinary cadmium and arsenic concentration were measured by inductively coupled plasma mass spectrometry. Multivariable linear regression was used to examine associations between urinary metals and salivary telomere length. RESULTS The geometric means and standard deviations of cadmium and arsenic were 0.33±0.33μg/g creatinine and 196.0±301.1μg/g creatinine, respectively. Urinary cadmium concentration was negatively associated with salivary telomere length after adjustment for confounders (β=-0.24, 95% CI -0.42,-0.07). Arsenic showed positive associations with telomere length but did not reach statistical significance. CONCLUSIONS This is the first study to demonstrate that cadmium may shorten adolescent telomeres, even at exposure levels that may be considered low. These results agree with prior experimental and adult epidemiological studies, and also help identify the mechanism of DNA damage by cadmium. This study expanded current evidence on the harmful effects of cadmium exposure on telomere length even to adolescents.
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Affiliation(s)
- Toki Fillman
- Department of Human Ecology, School of International Health, Graduate School of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan.
| | - Hana Shimizu-Furusawa
- Department of Human Ecology, School of International Health, Graduate School of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan.
| | - Chris Fook Sheng Ng
- Department of Pediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan.
| | - Rajendra Prasad Parajuli
- Basu Laboratory, CINE Building, Macdonald Campus, Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada.
| | - Chiho Watanabe
- Department of Human Ecology, School of International Health, Graduate School of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan.
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Révész D, Verhoeven JE, Milaneschi Y, Penninx BWJH. Depressive and anxiety disorders and short leukocyte telomere length: mediating effects of metabolic stress and lifestyle factors. Psychol Med 2016; 46:2337-2349. [PMID: 27266474 DOI: 10.1017/s0033291716000891] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Depressive and anxiety disorders are associated with shorter leukocyte telomere length (LTL), an indicator of cellular aging. It is, however, unknown which pathways underlie this association. This study examined the extent to which lifestyle factors and physiological changes such as inflammatory or metabolic alterations mediate the relationship. METHOD We applied mediation analysis techniques to data from 2750 participants of the Netherlands Study of Depression and Anxiety. LTL was assessed using quantitative polymerase chain reaction. Independent variables were current depressive (30-item Inventory of Depressive Symptoms - Self Report) and anxiety (21-item Beck's Anxiety Inventory) symptoms and presence of a depressive or anxiety disorder diagnosis based on DSM-IV; mediator variables included physiological stress systems, metabolic syndrome components and lifestyle factors. RESULTS Short LTL was associated with higher symptom severity (B = -2.4, p = 0.002) and current psychiatric diagnosis (B = -63.3, p = 0.024). C-reactive protein, interleukin-6, waist circumference, triglycerides, high-density lipoprotein cholesterol and cigarette smoking were significant mediators in the relationship between psychopathology and LTL. When all significant mediators were included in one model, the effect sizes of the relationships between LTL and symptom severity and current diagnosis were reduced by 36.7 and 32.7%, respectively, and the remaining direct effects were no longer significant. CONCLUSIONS Pro-inflammatory cytokines, metabolic alterations and cigarette smoking are important mediators of the association between depressive and anxiety disorders and LTL. This calls for future research on intervention programs that take into account lifestyle changes in mental health care settings.
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Affiliation(s)
- D Révész
- Department of Psychiatry and EMGO Institute for Health and Care Research,VU University Medical Center,Amsterdam,The Netherlands
| | - J E Verhoeven
- Department of Psychiatry and EMGO Institute for Health and Care Research,VU University Medical Center,Amsterdam,The Netherlands
| | - Y Milaneschi
- Department of Psychiatry and EMGO Institute for Health and Care Research,VU University Medical Center,Amsterdam,The Netherlands
| | - B W J H Penninx
- Department of Psychiatry and EMGO Institute for Health and Care Research,VU University Medical Center,Amsterdam,The Netherlands
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Ip P, Chung BHY, Ho FKW, Chan GCF, Deng W, Wong WHS, Lee SL, Chan PYT, Ying D, Wong WL, Tung KTS, Lau YL. Prenatal Tobacco Exposure Shortens Telomere Length in Children. Nicotine Tob Res 2016; 19:111-118. [DOI: 10.1093/ntr/ntw139] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 05/04/2016] [Indexed: 12/17/2022]
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Cui Y, Sun Q, Liu Z. Ambient particulate matter exposure and cardiovascular diseases: a focus on progenitor and stem cells. J Cell Mol Med 2016; 20:782-93. [PMID: 26988063 PMCID: PMC4831366 DOI: 10.1111/jcmm.12822] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 01/29/2016] [Indexed: 12/13/2022] Open
Abstract
Air pollution is a major challenge to public health. Ambient fine particulate matter (PM) is the key component for air pollution, and associated with significant mortality. The majority of the mortality following PM exposure is related to cardiovascular diseases. However, the mechanisms for the adverse effects of PM exposure on cardiovascular system remain largely unknown and under active investigation. Endothelial dysfunction or injury is considered one of the major factors that contribute to the development of cardiovascular diseases such as atherosclerosis and coronary heart disease. Endothelial progenitor cells (EPCs) play a critical role in maintaining the structural and functional integrity of vasculature. Particulate matter exposure significantly suppressed the number and function of EPCs in animals and humans. However, the mechanisms for the detrimental effects of PM on EPCs remain to be fully defined. One of the important mechanisms might be related to increased level of reactive oxygen species (ROS) and inflammation. Bone marrow (BM) is a major source of EPCs. Thus, the number and function of EPCs could be intimately associated with the population and functional status of stem cells (SCs) in the BM. Bone marrow stem cells and other SCs have the potential for cardiovascular regeneration and repair. The present review is focused on summarizing the detrimental effects of PM exposure on EPCs and SCs, and potential mechanisms including ROS formation as well as clinical implications.
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Affiliation(s)
- Yuqi Cui
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Qinghua Sun
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Zhenguo Liu
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
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Wang P, Liu H, Jiang T, Yang J. Cigarette Smoking and the Risk of Adult Myeloid Disease: A Meta-Analysis. PLoS One 2015; 10:e0137300. [PMID: 26340093 PMCID: PMC4560392 DOI: 10.1371/journal.pone.0137300] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 07/21/2015] [Indexed: 12/30/2022] Open
Abstract
Background The adult myeloid diseases, myelodysplastic syndrome and acute myeloid leukemia, have been reported to be associated with cigarette smoking, but the results have been conflicting. Previous studies may have ignored the relationship between myelodysplastic syndrome and acute myeloid leukemia, where approximately one-third of myelodysplastic syndrome cases will progress to acute myeloid leukemia, which could induce a serious bias in independent analyses. For the purposes of researching pathogenesis, we suggest that myelodysplastic syndrome and acute myeloid leukemia should be regarded as a single class of adult myeloid disease, and herein assessed the relationship between cigarette smoking and the risk of adult myeloid disease. Methods The PubMed, Cochrane Library, EBSCO, and EMBASE databases were systematically searched for reports published from 1990 to 2015. Two authors independently assessed the methodological quality and the extracted data. The odds ratios and adjusted odds ratios (OR), a sensitivity analysis, and the publication bias were analyzed using the CMA v2 (Comprehensive Meta Analysis Version 2) software program. Results Twenty-five studies were included in this meta-analysis. The publication dates ranged from 1990 to 2014. The pooled OR in current smokers and ever-smokers showed an increased risk of adult myeloid disease, with ORs of 1.45 (95% CI, 1.30–1.62; p<0.001) and 1.23 (95% CI 1.15–1.32; p<0.001) versus non-smokers, respectively. In the subset analyses, the OR of adult myeloid disease was increased regardless of the form of disease, geographical region, NOS (Newcastle Ottawa Scale) score, and source of controls. The smoking status was divided into <20 and ≥20 cigarettes per day, and these groups had ORs of developing adult myeloid disease of 1.24 (95% CI, 1.09–1.40; p = 0.001) and 1.32 (95% CI, 1.14–1.53; p<0.001), respectively. In the groups divided based on the number of years the subjects had smoked (<20 and ≥20 years), the ORs were 1.05 (95% CI, 0.90–1.23; p = 0.25) and 1.30 (95% CI, 1.16–1.45; p<0.001), respectively. Similarly, <20 and ≥20 pack-years were associated with ORs of 1.15 (95% CI, 1.03–1.29; p = 0.017) and 1.34 (95% CI, 1.18–1.52; p<0.001), respectively. Conclusions This meta-analysis, for the first time, combined myelodysplastic syndrome with acute myeloid leukemia to assess the overall risk of adult myeloid disease, and it demonstrated that cigarette smoking is associated with a significantly increased risk of adult myeloid disease.
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Affiliation(s)
- Peng Wang
- Department of Pathology, Medical Faculty, Kunming University of Science and Technology, Kunming, P.R. China
| | - Huifang Liu
- Department of Pathology, Medical Faculty, Kunming University of Science and Technology, Kunming, P.R. China
| | - Ting Jiang
- Department of Pathology, Kunming General Hospital, Clinical College of Kunming Medical University, Kunming, P.R. China
| | - Julun Yang
- Department of Pathology, Medical Faculty, Kunming University of Science and Technology, Kunming, P.R. China; Department of Pathology, Kunming General Hospital, Kunming, P.R. China
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Palpant NJ, Hofsteen P, Pabon L, Reinecke H, Murry CE. Cardiac development in zebrafish and human embryonic stem cells is inhibited by exposure to tobacco cigarettes and e-cigarettes. PLoS One 2015; 10:e0126259. [PMID: 25978043 PMCID: PMC4433280 DOI: 10.1371/journal.pone.0126259] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 03/31/2015] [Indexed: 12/23/2022] Open
Abstract
Background Maternal smoking is a risk factor for low birth weight and other adverse developmental outcomes. Objective We sought to determine the impact of standard tobacco cigarettes and e-cigarettes on heart development in vitro and in vivo. Methods Zebrafish (Danio rerio) were used to assess developmental effects in vivo and cardiac differentiation of human embryonic stem cells (hESCs) was used as a model for in vitro cardiac development. Results In zebrafish, exposure to both types of cigarettes results in broad, dose-dependent developmental defects coupled with severe heart malformation, pericardial edema and reduced heart function. Tobacco cigarettes are more toxic than e-cigarettes at comparable nicotine concentrations. During cardiac differentiation of hESCs, tobacco smoke exposure results in a delayed transition through mesoderm. Both types of cigarettes decrease expression of cardiac transcription factors in cardiac progenitor cells, suggesting a persistent delay in differentiation. In definitive human cardiomyocytes, both e-cigarette- and tobacco cigarette-treated samples showed reduced expression of sarcomeric genes such as MLC2v and MYL6. Furthermore, tobacco cigarette-treated samples had delayed onset of beating and showed low levels and aberrant localization of N-cadherin, reduced myofilament content with significantly reduced sarcomere length, and increased expression of the immature cardiac marker smooth muscle alpha-actin. Conclusion These data indicate a negative effect of both tobacco cigarettes and e-cigarettes on heart development in vitro and in vivo. Tobacco cigarettes are more toxic than E-cigarettes and exhibit a broader spectrum of cardiac developmental defects.
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Affiliation(s)
- Nathan J. Palpant
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Center for Cardiovascular Biology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Peter Hofsteen
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Center for Cardiovascular Biology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Lil Pabon
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Center for Cardiovascular Biology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Hans Reinecke
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Center for Cardiovascular Biology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Charles E. Murry
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Department of Bioengineering, University of Washington School of Medicine, Seattle, Washington, United States of America
- Department of Medicine/Cardiology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Center for Cardiovascular Biology, University of Washington School of Medicine, Seattle, Washington, United States of America
- Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
- * E-mail:
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Jiménez-Chillarón JC, Nijland MJ, Ascensão AA, Sardão VA, Magalhães J, Hitchler MJ, Domann FE, Oliveira PJ. Back to the future: transgenerational transmission of xenobiotic-induced epigenetic remodeling. Epigenetics 2015; 10:259-73. [PMID: 25774863 DOI: 10.1080/15592294.2015.1020267] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Epigenetics, or regulation of gene expression independent of DNA sequence, is the missing link between genotype and phenotype. Epigenetic memory, mediated by histone and DNA modifications, is controlled by a set of specialized enzymes, metabolite availability, and signaling pathways. A mostly unstudied subject is how sub-toxic exposure to several xenobiotics during specific developmental stages can alter the epigenome and contribute to the development of disease phenotypes later in life. Furthermore, it has been shown that exposure to low-dose xenobiotics can also result in further epigenetic remodeling in the germ line and contribute to increase disease risk in the next generation (multigenerational and transgenerational effects). We here offer a perspective on current but still incomplete knowledge of xenobiotic-induced epigenetic alterations, and their possible transgenerational transmission. We also propose several molecular mechanisms by which the epigenetic landscape may be altered by environmental xenobiotics and hypothesize how diet and physical activity may counteract epigenetic alterations.
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Zhan S, Zhang X, Cao S, Huang J. Benzo(a)pyrene disrupts mouse preimplantation embryo development. Fertil Steril 2015; 103:815-25. [DOI: 10.1016/j.fertnstert.2014.11.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/17/2014] [Accepted: 11/10/2014] [Indexed: 12/23/2022]
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Zampieri M, Ciccarone F, Calabrese R, Franceschi C, Bürkle A, Caiafa P. Reconfiguration of DNA methylation in aging. Mech Ageing Dev 2015; 151:60-70. [PMID: 25708826 DOI: 10.1016/j.mad.2015.02.002] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 01/20/2015] [Accepted: 02/19/2015] [Indexed: 12/12/2022]
Abstract
A complex interplay between multiple biological effects shapes the aging process. The advent of genome-wide quantitative approaches in the epigenetic field has highlighted the effective impact of epigenetic deregulation, particularly of DNA methylation, on aging. Age-associated alterations in DNA methylation are commonly grouped in the phenomenon known as "epigenetic drift" which is characterized by gradual extensive demethylation of genome and hypermethylation of a number of promoter-associated CpG islands. Surprisingly, specific DNA regions show directional epigenetic changes in aged individuals suggesting the importance of these events for the aging process. However, the epigenetic information obtained until now in aging needs a re-consideration due to the recent discovery of 5-hydroxymethylcytosine, a new DNA epigenetic mark present on genome. A recapitulation of the factors involved in the regulation of DNA methylation and the changes occurring in aging will be described in this review also considering the data available on 5 hmC.
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Affiliation(s)
- Michele Zampieri
- Department of Cellular Biotechnologies and Hematology, "Sapienza" University of Rome, Rome 00161, Italy; Pasteur Institute-Fondazione Cenci Bolognetti, Rome 00161, Italy
| | - Fabio Ciccarone
- Department of Cellular Biotechnologies and Hematology, "Sapienza" University of Rome, Rome 00161, Italy; Pasteur Institute-Fondazione Cenci Bolognetti, Rome 00161, Italy
| | - Roberta Calabrese
- Department of Cellular Biotechnologies and Hematology, "Sapienza" University of Rome, Rome 00161, Italy; Pasteur Institute-Fondazione Cenci Bolognetti, Rome 00161, Italy
| | - Claudio Franceschi
- Department of Experimental Pathology, Alma Mater Studiorum, University of Bologna, Bologna 40126, Italy
| | - Alexander Bürkle
- Molecular Toxicology Group, Department of Biology, University of Konstanz, Konstanz D-78457, Germany
| | - Paola Caiafa
- Department of Cellular Biotechnologies and Hematology, "Sapienza" University of Rome, Rome 00161, Italy; Pasteur Institute-Fondazione Cenci Bolognetti, Rome 00161, Italy.
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Salihu HM, Pradhan A, King L, Paothong A, Nwoga C, Marty PJ, Whiteman V. Impact of intrauterine tobacco exposure on fetal telomere length. Am J Obstet Gynecol 2015; 212:205.e1-8. [PMID: 25173189 DOI: 10.1016/j.ajog.2014.08.026] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 08/12/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE We sought to investigate whether maternal smoking during pregnancy affects telomere length of the fetus. STUDY DESIGN Pregnant women were recruited on hospital admission at delivery. A self-report questionnaire and salivary cotinine test were used to confirm tobacco exposure. Neonatal umbilical cord blood samples were collected, and genomic DNA was isolated from cord blood leukocytes and was analyzed for fetal telomere length based on quantitative polymerase chain reaction. A ratio of relative telomere length was determined by telomere repeat copy number and single copy gene copy number (T/S ratio) and used to compare the telomere length of active, passive, and nonsmokers. Bootstrap and analysis of variance statistical methods were used to evaluate the relationship between prenatal smoking status and fetal telomere length. RESULTS Of the 86 women who were included in this study, approximately 69.8% of the participants were covered by Medicaid, and 55.8% of the participants were black or Hispanic. The overall mean T/S ratio was 0.8608 ± 1.0442. We noted an inverse relationship between smoking and fetal telomere length in a dose-response pattern (T/S ratio of nonsmokers that was more than passive smokers that was more than active smokers). Telomere length was significantly different for each pairwise comparison, and the greatest difference was between active and nonsmokers. CONCLUSION Our results provide the first evidence to demonstrate a positive association between shortened fetal telomere length and smoking during pregnancy. Our findings suggest the possibility of early intrauterine programming for accelerated aging that is the result of tobacco exposure.
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Lee KWK, Richmond R, Hu P, French L, Shin J, Bourdon C, Reischl E, Waldenberger M, Zeilinger S, Gaunt T, McArdle W, Ring S, Woodward G, Bouchard L, Gaudet D, Smith GD, Relton C, Paus T, Pausova Z. Prenatal exposure to maternal cigarette smoking and DNA methylation: epigenome-wide association in a discovery sample of adolescents and replication in an independent cohort at birth through 17 years of age. ENVIRONMENTAL HEALTH PERSPECTIVES 2015; 123:193-9. [PMID: 25325234 PMCID: PMC4314251 DOI: 10.1289/ehp.1408614] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Accepted: 10/16/2014] [Indexed: 05/17/2023]
Abstract
BACKGROUND Prenatal exposure to maternal cigarette smoking (prenatal smoke exposure) had been associated with altered DNA methylation (DNAm) at birth. OBJECTIVE We examined whether such alterations are present from birth through adolescence. METHODS We used the Infinium HumanMethylation450K BeadChip to search across 473,395 CpGs for differential DNAm associated with prenatal smoke exposure during adolescence in a discovery cohort (n = 132) and at birth, during childhood, and during adolescence in a replication cohort (n = 447). RESULTS In the discovery cohort, we found five CpGs in MYO1G (top-ranking CpG: cg12803068, p = 3.3 × 10-11) and CNTNAP2 (cg25949550, p = 4.0 × 10-9) to be differentially methylated between exposed and nonexposed individuals during adolescence. The CpGs in MYO1G and CNTNAP2 were associated, respectively, with higher and lower DNAm in exposed versus nonexposed adolescents. The same CpGs were differentially methylated at birth, during childhood, and during adolescence in the replication cohort. In both cohorts and at all developmental time points, the differential DNAm was in the same direction and of a similar magnitude, and was not altered appreciably by adjustment for current smoking by the participants or their parents. In addition, four of the five EWAS (epigenome-wide association study)-significant CpGs in the adolescent discovery cohort were also among the top sites of differential methylation in a previous birth cohort, and differential methylation of CpGs in CYP1A1, AHRR, and GFI1 observed in that study was also evident in our discovery cohort. CONCLUSIONS Our findings suggest that modifications of DNAm associated with prenatal maternal smoking may persist in exposed offspring for many years-at least until adolescence.
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Affiliation(s)
- Ken W K Lee
- The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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Zota AR, Needham BL, Blackburn EH, Lin J, Park SK, Rehkopf DH, Epel ES. Associations of cadmium and lead exposure with leukocyte telomere length: findings from National Health and Nutrition Examination Survey, 1999-2002. Am J Epidemiol 2015; 181:127-36. [PMID: 25504027 DOI: 10.1093/aje/kwu293] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Cadmium and lead are ubiquitous environmental contaminants that might increase risks of cardiovascular disease and other aging-related diseases, but their relationships with leukocyte telomere length (LTL), a marker of cellular aging, are poorly understood. In experimental studies, they have been shown to induce telomere shortening, but no epidemiologic study to date has examined their associations with LTL in the general population. We examined associations of blood lead and cadmium (n = 6,796) and urine cadmium (n = 2,093) levels with LTL among a nationally representative sample of US adults from the National Health and Nutrition Examination Survey (1999-2002). The study population geometric mean concentrations were 1.67 µg/dL (95% confidence interval (CI): 1.63, 1.70) for blood lead, 0.44 µg/L (95% CI: 0.42, 0.47) for blood cadmium, and 0.28 µg/L (95% CI: 0.27, 0.30) for urine cadmium. After adjustment for potential confounders, the highest (versus lowest) quartiles of blood and urine cadmium were associated with -5.54% (95% CI: -8.70, -2.37) and -4.50% (95% CI: -8.79, -0.20) shorter LTLs, respectively, with evidence of dose-response relationship (P for trend < 0.05). There was no association between blood lead concentration and LTL. These findings provide further evidence of physiological impacts of cadmium at environmental levels and might provide insight into biological pathways underlying cadmium toxicity and chronic disease risks.
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Cui Y, Jia F, He J, Xie X, Li Z, Fu M, Hao H, Liu Y, Liu DZ, Cowan PJ, Zhu H, Sun Q, Liu Z. Ambient Fine Particulate Matter Suppresses In Vivo Proliferation of Bone Marrow Stem Cells through Reactive Oxygen Species Formation. PLoS One 2015; 10:e0127309. [PMID: 26058063 PMCID: PMC4461321 DOI: 10.1371/journal.pone.0127309] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/14/2015] [Indexed: 12/14/2022] Open
Abstract
AIMS Some environmental insults, such as fine particulate matter (PM) exposure, significantly impair the function of stem cells. However, it is unknown if PM exposure could affect the population of bone marrow stem cells (BMSCs). The present study was to investigate the effects of PM on BMSCs population and related mechanism(s). MAIN METHEODS PM was intranasally distilled into male C57BL/6 mice for one month. Flow cytometry with antibodies for BMSCs, Annexin V and BrdU ware used to determine the number of BMSCs and the levels of their apoptosis and proliferation in vivo. Phosphorylated Akt (P-Akt) level was determined in the BM cells with western blotting. Intracellular reactive oxygen species (ROS) formation was quantified using flow cytometry analysis. To determine the role of PM-induced ROS in BMSCs population, proliferation, and apotosis, experiments were repeated using N-acetylcysteine (NAC)-treated wild type mice or a triple transgenic mouse line with overexpression of antioxidant network (AON) composed of superoxide dismutase (SOD)1, SOD3, and glutathione peroxidase-1 with decreased in vivo ROS production. KEY FINDINGS PM treatment significantly reduced BMSCs population in association with increased ROS formation, decreased P-Akt level, and inhibition of proliferation of BMSCs without induction of apoptosis. NAC treatment or AON overexpression with reduced ROS formation effectively prevented PM-induced reduction of BMSCs population and proliferation with partial recovery of P-Akt level. SIGNIFICANCE PM exposure significantly decreased the population of BMSCs due to diminished proliferation via ROS-mediated mechanism (could be partially via inhibition of Akt signaling).
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Affiliation(s)
- Yuqi Cui
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
- Department of Cardiology, Shandong Provincial Hospital, Shandong University, 324 Jing 5 road, Jinan, Shandong 250021, P.R. China
| | - Fengpeng Jia
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
- Department of Cardiovascular Medicine, the First Affiliated Hospital,Chongqing Medical University, Chongqing 400016, China
| | - Jianfeng He
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Xiaoyun Xie
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Zhihong Li
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Minghuan Fu
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Hong Hao
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Ying Liu
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Dylan Z. Liu
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Peter J. Cowan
- Department of Medicine, University of Melbourne, St. Vincent’s Hospital, Melbourne, Australia
| | - Hua Zhu
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
- Department of Surgery, Wexner Medical Center, The Ohio State University, Columbus, OH, United States of America
| | - Qinghua Sun
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
| | - Zhenguo Liu
- Dorothy M. Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, United States of America
- * E-mail:
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Hadjiargyrou M, O'Keefe RJ. The convergence of fracture repair and stem cells: interplay of genes, aging, environmental factors and disease. J Bone Miner Res 2014; 29:2307-22. [PMID: 25264148 PMCID: PMC4455538 DOI: 10.1002/jbmr.2373] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 08/11/2014] [Accepted: 09/10/2014] [Indexed: 01/07/2023]
Abstract
The complexity of fracture repair makes it an ideal process for studying the interplay between the molecular, cellular, tissue, and organ level events involved in tissue regeneration. Additionally, as fracture repair recapitulates many of the processes that occur during embryonic development, investigations of fracture repair provide insights regarding skeletal embryogenesis. Specifically, inflammation, signaling, gene expression, cellular proliferation and differentiation, osteogenesis, chondrogenesis, angiogenesis, and remodeling represent the complex array of interdependent biological events that occur during fracture repair. Here we review studies of bone regeneration in genetically modified mouse models, during aging, following environmental exposure, and in the setting of disease that provide insights regarding the role of multipotent cells and their regulation during fracture repair. Complementary animal models and ongoing scientific discoveries define an increasing number of molecular and cellular targets to reduce the morbidity and complications associated with fracture repair. Last, some new and exciting areas of stem cell research such as the contribution of mitochondria function, limb regeneration signaling, and microRNA (miRNA) posttranscriptional regulation are all likely to further contribute to our understanding of fracture repair as an active branch of regenerative medicine.
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Affiliation(s)
- Michael Hadjiargyrou
- Department of Life Sciences, New York Institute of Technology, Old Westbury, NY, USA
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Vogelsang M, Paccez JD, Schäfer G, Dzobo K, Zerbini LF, Parker MI. Aberrant methylation of the MSH3 promoter and distal enhancer in esophageal cancer patients exposed to first-hand tobacco smoke. J Cancer Res Clin Oncol 2014; 140:1825-33. [PMID: 24934723 DOI: 10.1007/s00432-014-1736-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 06/04/2014] [Indexed: 12/15/2022]
Abstract
PURPOSE Polymorphisms in MSH3 gene confer risk of esophageal cancer when in combination with tobacco smoke exposure. The purpose of this study was to investigate the methylation status of MSH3 gene in esophageal cancer patients in order to further elucidate possible role of MSH3 in esophageal tumorigenesis. METHODS We applied nested methylation-specific polymerase chain reaction to investigate the methylation status of the MSH3 promoter in tumors and matching adjacent normal-looking tissues of 84 esophageal cancer patients from a high-risk South African population. The Cancer Genome Atlas data were used to examine DNA methylation profiles at 17 CpG sites located in the MSH3 locus. RESULTS Overall, promoter methylation was detected in 91.9 % of tumors, which was significantly higher compared to 76.0 % in adjacent normal-looking esophageal tissues (P = 0.008). When samples were grouped according to different demographics (including age, gender and ethnicity) and smoking status of patients, methylation frequencies were found to be significantly higher in tumor tissues of Black subjects (P = 0.024), patients of 55-65 years of age (P = 0.032), males (P = 0.037) and tobacco smokers (P = 0.015). Furthermore, methylation of the MSH3 promoter was significantly more frequent in tumor samples from smokers compared to tumor samples from non-smokers [odds ratio (OR) = 31.9, P = 0.031]. The TCGA data confirmed significantly higher DNA methylation level at the MSH3 promoter region in tumors (P = 0.0024). In addition, we found evidence of an aberrantly methylated putative MSH3-associated distal enhancer element. CONCLUSION Our results suggest that methylation of MSH3 together with exposure to tobacco smoke is involved in esophageal carcinogenesis. Due to the active role of the MSH3 protein in modulating chemosensitivity of cells, methylation of MSH3 should further be examined in association with the outcome of esophageal cancer treatment using anticancer drugs.
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Affiliation(s)
- Matjaz Vogelsang
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, UCT Medical Campus, Anzio Road, Observatory, Cape Town, 7925, South Africa
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Abstract
DNA methylation is the most studied epigenetic modification, capable of controlling gene expression in the contexts of normal traits or diseases. It is highly dynamic during early embryogenesis and remains relatively stable throughout life, and such patterns are intricately related to human development. DNA methylation is a quantitative trait determined by a complex interplay of genetic and environmental factors. Genetic variants at a specific locus can influence both regional and distant DNA methylation. The environment can have varying effects on DNA methylation depending on when the exposure occurs, such as during prenatal life or during adulthood. In particular, cigarette smoking in the context of both current smoking and prenatal exposure is a strong modifier of DNA methylation. Epigenome-wide association studies have uncovered candidate genes associated with cigarette smoking that have biologically relevant functions in the etiology of smoking-related diseases. As such, DNA methylation is a potential mechanistic link between current smoking and cancer, as well as prenatal cigarette-smoke exposure and the development of adult chronic diseases.
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Affiliation(s)
| | - Zdenka Pausova
- Physiology and Experimental Medicine, The Hospital for Sick Children, University of TorontoToronto, ON, Canada
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