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Zhang C, Ma Y, Liu W, Ma S, Chen Z, Hao X, Sun Z, Wang Z. Transcriptomic and proteomic features of a mouse model of sperm DNA damage induced by benzo(a)pyrene. Reprod Toxicol 2024; 126:108596. [PMID: 38641015 DOI: 10.1016/j.reprotox.2024.108596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 04/05/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
This study replicated a mouse model of sperm DNA damage induced by benzo(a)pyrene (BaP), and the transcriptomic and proteomic features of the model were examined to clarify the pathways related to BaP-induced damage to sperm DNA. Male mice in the BaP group were subjected to BaP at a dosage of 100 mg/kg/d or an equivalent quantity of saline solution in the control group for 60 days. Subsequently, the DNA fragmentation index (DFI) in sperm was assessed using a sperm chromatin structure assay (SCSA). RNA-seq and data-independent acquisition (DIA) were used to identify the mRNA and protein expression patterns in the testis. The sperm DFI significantly increased in the BaP group. Compared to the control group, the BaP group exhibited differential expression of 240 genes (referred to as DEGs) and 616 proteins (referred to as DEPs). These molecules included Aldh1a1, Cyb5r3, Fads1, Oxsm, Rcn3, and Prss45. Pathways in cancer, the PI3K-Akt signaling pathway, metabolic pathways, and the MAPK signaling pathway were the primary areas where these genes showed enrichment. BaP can damage the DNA of sperm and affect metabolism, the PI3K-Akt pathway, and pathways associated with cancer signaling.
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Affiliation(s)
- Chenming Zhang
- Henan University of Chinese Medicine, Zhengzhou, Henan 450046, China; The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan 450003, China
| | - Yunfeng Ma
- Henan University of Chinese Medicine, Zhengzhou, Henan 450046, China
| | - Wenbang Liu
- Henan University of Chinese Medicine, Zhengzhou, Henan 450046, China
| | - Sicheng Ma
- Henan University of Chinese Medicine, Zhengzhou, Henan 450046, China
| | - Zhelin Chen
- Henan University of Chinese Medicine, Zhengzhou, Henan 450046, China
| | - XiaoHui Hao
- Henan University of Chinese Medicine, Zhengzhou, Henan 450046, China
| | - Zixue Sun
- Henan Province Hospital of Traditional Chinese Medicine, 6 Dongfeng Road, Zhengzhou, Henan 450000, China.
| | - Zulong Wang
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan 450003, China.
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Zheng X, Tang J, Song A, Zhou Y, Miao J, Li Z, Pan L. Study on reproductive endocrine disturbance and DNA damage mechanism of female Ruditapes philippinarum under Benzo[a]pyrene stress. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122844. [PMID: 37918772 DOI: 10.1016/j.envpol.2023.122844] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/22/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
The reproductive toxicity of polycyclic aromatic hydrocarbons (PAHs) in aquatic organisms has attracted increasing attention from scholars. Currently, research in this field primarily focuses on vertebrates such as zebrafish and other model species. However, there is still a significant knowledge gap in the toxicity of PAHs to invertebrates and its potential mechanisms. Benzo[a]pyrene (B[a]P) is one of the most representative PAHs. In this study, female Ruditapes philippinarum (R. philippinarum) was treated with B[a]P concentrations of 0, 0.8, 4, and 20 μg/L to investigate reproductive indicators in the proliferative, growth, mature, and spawn stages. Transcriptomics was used to investigate the expression of genes associated with the reproductive endocrine system, DNA repair, autophagy, apoptosis, and ovarian development at different reproductive stages. Our results suggested that B[a]P disrupted the endocrine system by interfering with the production of steroid hormones and the transmission of estrogen signals in female R. philippinarum. The structure of the ovarian DNA duplex is severely damaged under the stress of B[a]P, and a series of cellular responses caused by DNA damage are also interfered. Additionally, we observed a reduction in the gonadosomatic index (GSI) and mature oocytes numbers after B[a]P exposed. Tissue section indicated that severe damage to the ovarian structure at mature and spawn stages. In conclusion, this study combined transcriptomic and toxicological to explore the negative effects on ovarian development induced by B[a]P, focusing on reproductive endocrine disturbance and DNA damage.
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Affiliation(s)
- Xin Zheng
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Jian Tang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Aimin Song
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Yueyao Zhou
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Jingjing Miao
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Zeyuan Li
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China.
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3
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Wang Y, Su M, Chen Y, Huang X, Ruan L, Lv Q, Li L. Research progress on the role and mechanism of DNA damage repair in germ cell development. Front Endocrinol (Lausanne) 2023; 14:1234280. [PMID: 37529603 PMCID: PMC10390305 DOI: 10.3389/fendo.2023.1234280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023] Open
Abstract
In the complex and dynamic processes of replication, transcription, and translation of DNA molecules, a large number of replication errors or damage can occur which lead to obstacles in the development process of germ cells and result in a decreased reproductive rate. DNA damage repair has attracted widespread attention due to its important role in the maintenance and regulation of germ cells. This study reports on a systematic review of the role and mechanism of DNA damage repair in germline development. First, the causes, detection methods, and repair methods of DNA damage, and the mechanism of DNA damage repair are summarized. Second, a summary of the causes of abnormal DNA damage repair in germ cells is introduced along with common examples, and the relevant effects of germ cell damage. Third, we introduce the application of drugs related to DNA damage repair in the treatment of reproductive diseases and related surgical treatment of abnormal DNA damage, and summarize various applications of DNA damage repair in germ cells. Finally, a summary and discussion is given of the current deficiencies in DNA damage repair during germ cell development and future research development. The purpose of this paper is to provide researchers engaged in relevant fields with a further systematic understanding of the relevant applications of DNA damage repair in germ cells and to gain inspiration from it to provide new research ideas for related fields.
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Affiliation(s)
- Yan Wang
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Mengrong Su
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Yujie Chen
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Xinyu Huang
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Lian Ruan
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Qizhuang Lv
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Li Li
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
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4
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Mo J, Wan MT, Au DWT, Shi J, Tam N, Qin X, Cheung NKM, Lai KP, Winkler C, Kong RYC, Seemann F. Transgenerational bone toxicity in F3 medaka (Oryzias latipes) induced by ancestral benzo[a]pyrene exposure: Cellular and transcriptomic insights. J Environ Sci (China) 2023; 127:336-348. [PMID: 36522066 DOI: 10.1016/j.jes.2022.04.051] [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: 02/21/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 06/17/2023]
Abstract
Benzo[a]pyrene (BaP), a ubiquitous pollutant, raises environmental health concerns due to induction of bone toxicity in the unexposed offspring. Exposure of F0 ancestor medaka (Oryzias latipes) to 1 µg/L BaP for 21 days causes reduced vertebral bone thickness in the unexposed F3 male offspring. To reveal the inherited modifications, osteoblast (OB) abundance and molecular signaling pathways of transgenerational BaP-induced bone thinning were assessed. Histomorphometric analysis showed a reduction in OB abundance. Analyses of the miRNA and mRNA transcriptomes revealed the dysregulation of Wnt signaling (frzb/ola-miR-1-3p, sfrp5/ola-miR-96-5p/miR-455-5p) and bone morphogenetic protein (Bmp) signaling (bmp3/ola-miR-96-5p/miR-181b-5p/miR-199a-5p/miR-205-5p/miR-455-5p). Both pathways are major indicators of impaired bone formation, while the altered Rank signaling in osteoclasts (c-fos/miR-205-5p) suggests a potentially augmented bone resorption. Interestingly, a typical BaP-responsive pathway, the Nrf2-mediated oxidative stress response (gst/ola-miR-181b-5p/miR-199a-5p/miR-205), was also affected. Moreover, mRNA levels of epigenetic modification enzymes (e.g., hdac6, hdac7, kdm5b) were found dysregulated. The findings indicated that epigenetic factors (e.g., miRNAs, histone modifications) may directly regulate the expression of genes associated with transgenerational BaP bone toxicity and warrants further studies. The identified candidate genes and miRNAs may serve as potential biomarkers for BaP-induced bone disease and as indicators of historic exposures in wild fish for conservation purposes.
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Affiliation(s)
- Jiezhang Mo
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510000, 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; State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Miles Teng Wan
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Doris Wai-Ting Au
- 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; State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Jingchun Shi
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Nathan Tam
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Xian Qin
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Napo K M Cheung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Keng Po Lai
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China; Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Huan Cheng North 2nd Road 109, Guilin 541004, China
| | - Christoph Winkler
- Department of Biological Sciences, National University of Singapore, 119077, Singapore
| | - Richard Yuen-Chong Kong
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510000, 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; State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China.
| | - Frauke Seemann
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510000, China; Center for Coastal Studies and Department of Life Sciences, Texas A&M University-Corpus Christi, Corpus Christi, Texas 78412, USA.
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5
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Escher J, Yan W, Rissman EF, Wang HLV, Hernandez A, Corces VG. Beyond Genes: Germline Disruption in the Etiology of Autism Spectrum Disorders. J Autism Dev Disord 2022; 52:4608-4624. [PMID: 34596807 PMCID: PMC9035896 DOI: 10.1007/s10803-021-05304-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2021] [Indexed: 01/31/2023]
Abstract
Investigations into the etiology of autism spectrum disorders have been largely confined to two realms: variations in DNA sequence and somatic developmental exposures. Here we suggest a third route-disruption of the germline epigenome induced by exogenous toxicants during a parent's gamete development. Similar to cases of germline mutation, these molecular perturbations may produce dysregulated transcription of brain-related genes during fetal and early development, resulting in abnormal neurobehavioral phenotypes in offspring. Many types of exposures may have these impacts, and here we discuss examples of anesthetic gases, tobacco components, synthetic steroids, and valproic acid. Alterations in parental germline could help explain some unsolved phenomena of autism, including increased prevalence, missing heritability, skewed sex ratio, and heterogeneity of neurobiology and behavior.
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Affiliation(s)
- Jill Escher
- Escher Fund for Autism, 1590 Calaveras Avenue, San Jose, CA, USA.
| | - Wei Yan
- The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Emilie F Rissman
- Center for Human Health and the Environment and Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Hsiao-Lin V Wang
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Arturo Hernandez
- Maine Medical Center Research Institute, MaineHealth, Scarborough, ME, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Victor G Corces
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
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6
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Godschalk RWL, Yauk CL, van Benthem J, Douglas GR, Marchetti F. In utero Exposure to Genotoxicants Leading to Genetic Mosaicism: An Overlooked Window of Susceptibility in Genetic Toxicology Testing? ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:55-65. [PMID: 31743493 PMCID: PMC6973016 DOI: 10.1002/em.22347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 05/08/2023]
Abstract
In utero development represents a sensitive window for the induction of mutations. These mutations may subsequently expand clonally to populate entire organs or anatomical structures. Although not all adverse mutations will affect tissue structure or function, there is growing evidence that clonally expanded genetic mosaics contribute to various monogenic and complex diseases, including cancer. We posit that genetic mosaicism is an underestimated potential health problem that is not fully addressed in the current regulatory genotoxicity testing paradigm. Genotoxicity testing focuses exclusively on adult exposures and thus may not capture the complexity of genetic mosaicisms that contribute to human disease. Numerous studies have shown that conversion of genetic damage into mutations during early developmental exposures can result in much higher mutation burdens than equivalent exposures in adults in certain tissues. Therefore, we assert that analysis of genetic effects caused by in utero exposures should be considered in the current regulatory testing paradigm, which is possible by harmonization with current reproductive/developmental toxicology testing strategies. This is particularly important given the recent proposed paradigm change from simple hazard identification to quantitative mutagenicity assessment. Recent developments in sequencing technologies offer practical tools to detect mutations in any tissue or species. In addition to mutation frequency and spectrum, these technologies offer the opportunity to characterize the extent of genetic mosaicism following exposure to mutagens. Such integration of new methods with existing toxicology guideline studies offers the genetic toxicology community a way to modernize their testing paradigm and to improve risk assessment for vulnerable populations. Environ. Mol. Mutagen. 61:55-65, 2020. © 2019 The Authors. Environmental and Molecular Mutagenesis published by Wiley Periodicals, Inc. on behalf of Environmental Mutagen Society.
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Affiliation(s)
- Roger W. L. Godschalk
- Department of Pharmacology and Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM)Maastricht UniversityMaastrichtThe Netherlands
| | - Carole L. Yauk
- Mechanistic Studies DivisionEnvironmental Health Science and Research Bureau, Health CanadaOttawaK1A 0K9OntarioCanada
| | - Jan van Benthem
- Center for Health ProtectionNational Institute for Public Health and the Environment (RIVM)BilthovenThe Netherlands
| | - George R. Douglas
- Mechanistic Studies DivisionEnvironmental Health Science and Research Bureau, Health CanadaOttawaK1A 0K9OntarioCanada
| | - Francesco Marchetti
- Mechanistic Studies DivisionEnvironmental Health Science and Research Bureau, Health CanadaOttawaK1A 0K9OntarioCanada
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Zhang CM, Sun ZX, Wang ZL, Chen JS, Chang Z, Wang Z, Zhu L, Ma ZH, Peng YJ, Xu ZA, Wang SQ. Abnormal methylation of spermatozoa induced by benzo(a)pyrene in rats. Hum Exp Toxicol 2019; 38:846-856. [PMID: 30982342 DOI: 10.1177/0960327119836230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Epigenetic mutations caused by pollutants are possibly linked to many diseases. Benzo(a)pyrene (BaP) is one of the most representative air pollutants and has aroused wide concern because of its strong carcinogenicity. The reproductive toxicity induced by BaP has been identified, but little is known about the characteristics of the methylation changes induced by BaP. In this study, a methylated DNA immunoprecipitation sequencing method was used to detect the methylation of sperm DNA of rats exposed to BaP. Compared with the respective genes in normal rats, there were 3227 hypomethylated genes and 828 hypermethylated genes after BaP exposure. Gene ontology enrichment analysis reported that differentially methylated genes (DMGs) were enriched in the localization, single-multicellular organism process and plasma membrane. Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that the DMGs were significantly enriched in the Ras signalling pathway, Rap1 signalling pathway, pancreatic secretion and neuroactive ligand-receptor interaction. DisGeNET disease spectrum analysis showed that DMGs were associated with infertility and certain genetic diseases. Further research needs to be done to explore whether these abnormal methylation are transgenerational.
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Affiliation(s)
- C M Zhang
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Z X Sun
- 2 Henan Province Hospital of Traditional Chinese Medicine, Zhengzhou, Henan, China
| | - Z L Wang
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - J S Chen
- 2 Henan Province Hospital of Traditional Chinese Medicine, Zhengzhou, Henan, China
| | - Z Chang
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Z Wang
- 2 Henan Province Hospital of Traditional Chinese Medicine, Zhengzhou, Henan, China
| | - L Zhu
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Z H Ma
- 3 Pain Department of Henan Provincial Hospital, Zhengzhou, Henan, China
| | - Y J Peng
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Z A Xu
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - S Q Wang
- 1 Henan University of Chinese Medicine, Zhengzhou, Henan, China
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Godschalk R, Remels A, Hoogendoorn C, van Benthem J, Luijten M, Duale N, Brunborg G, Olsen AK, Bouwman FG, Munnia A, Peluso M, Mariman E, van Schooten FJ. Paternal Exposure to Environmental Chemical Stress Affects Male Offspring's Hepatic Mitochondria. Toxicol Sci 2019; 162:241-250. [PMID: 29145655 DOI: 10.1093/toxsci/kfx246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Preconceptional paternal exposures may affect offspring's health, which cannot be explained by mutations in germ cells, but by persistent changes in the regulation of gene expression. Therefore, we investigated whether pre-conceptional paternal exposure to benzo[a]pyrene (B[a]P) could alter the offspring's phenotype. Male C57BL/6 mice were exposed to B[a]P by gavage for 6 weeks, 3× per week, and were crossed with unexposed BALB-c females 6 weeks after the final exposure. The offspring was kept under normal feeding conditions and was sacrificed at 3 weeks of age. Analysis of the liver proteome by 2D-gel electrophoresis and mass spectrometry indicated that proteins involved in mitochondrial function were significantly downregulated in the offspring of exposed fathers. This down-regulation of mitochondrial proteins was paralleled by a reduction in mitochondrial DNA copy number and reduced activity of citrate synthase and β-hydroxyacyl-CoA dehydrogenase, but in male offspring only. Surprisingly, analysis of hepatic mRNA expression revealed a male-specific up-regulation of the genes, whose proteins were downregulated, including Aldh2 and Ogg1. This discrepancy could be related to several selected microRNA (miRNA)'s that regulate the translation of these proteins; miRNA-122, miRNA-129-2-5p, and miRNA-1941 were upregulated in a gender-specific manner. Since mitochondria are thought to be a source of intracellular reactive oxygen species, we additionally assessed oxidatively-induced DNA damage. Both 8-hydroxy-deoxyguanosine and malondialdehyde-dG adduct levels were significantly reduced in male offspring of exposed fathers. In conclusion, we show that paternal exposure to B[a]P can regulate mitochondrial metabolism in offspring, which may have profound implications for our understanding of health and disease risk inherited from fathers.
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Affiliation(s)
- Roger Godschalk
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
| | - Alex Remels
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
| | - Camiel Hoogendoorn
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
| | - Jan van Benthem
- Laboratory for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Mirjam Luijten
- Laboratory for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Nur Duale
- Department of Molecular Biology, Norwegian Institute of Public Health, Nydalen, Oslo, Norway
| | - Gunnar Brunborg
- Department of Molecular Biology, Norwegian Institute of Public Health, Nydalen, Oslo, Norway
| | - Ann-Karin Olsen
- Department of Molecular Biology, Norwegian Institute of Public Health, Nydalen, Oslo, Norway
| | - Freek G Bouwman
- Department of Human Biology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Armelle Munnia
- Cancer Risk Factor Branch, Cancer Prevention Laboratory, ISPO-Cancer Prevention and Research Institute, Florence, Italy
| | - Marco Peluso
- Cancer Risk Factor Branch, Cancer Prevention Laboratory, ISPO-Cancer Prevention and Research Institute, Florence, Italy
| | - Edwin Mariman
- Department of Human Biology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Frederik Jan van Schooten
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
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9
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Gunes S, Metin Mahmutoglu A, Arslan MA, Henkel R. Smoking-induced genetic and epigenetic alterations in infertile men. Andrologia 2018; 50:e13124. [DOI: 10.1111/and.13124] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 07/18/2018] [Indexed: 02/06/2023] Open
Affiliation(s)
- Sezgin Gunes
- Department of Medical Biology, Faculty of Medicine; Ondokuz Mayis University; Samsun Turkey
- Department of Multidisciplinary Molecular Medicine, Health Sciences Institute; Ondokuz Mayis University; Samsun Turkey
| | - Asli Metin Mahmutoglu
- Department of Medical Biology, Faculty of Medicine; Ondokuz Mayis University; Samsun Turkey
| | - Mehmet Alper Arslan
- Department of Medical Biology, Faculty of Medicine; Ondokuz Mayis University; Samsun Turkey
- Department of Multidisciplinary Molecular Medicine, Health Sciences Institute; Ondokuz Mayis University; Samsun Turkey
| | - Ralf Henkel
- Department of Medical Bioscience; University of the Western Cape; Bellville South Africa
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10
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Rowan-Carroll A, Beal MA, Williams A, Marchetti F, Yauk CL. Dose-response mutation and spectrum analyses reveal similar responses at two microsatellite loci in benzo(a)pyrene-exposed mouse spermatogonia. Mutagenesis 2018; 32:463-470. [PMID: 28575466 DOI: 10.1093/mutage/gex008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 03/23/2017] [Indexed: 11/14/2022] Open
Abstract
Identifying chemical exposures that can cause germline mutations is important as these mutations can be inherited, impacting both individual and population health. However, germline mutations are extremely rare and difficult to detect. Chemically induced germline mutations can be detected through analysis of highly unstable tandem repeat DNA. We recently developed a single-molecule PCR (SM-PCR) approach to quantify mutations at a mouse microsatellite locus (Mm2.2.1) in sperm for such purposes. In this study, we refine this approach through the combined analysis of mouse microsatellites Mm2.2.1 and Mm19.2.3. Mice were exposed to 0, 25, 50 or 100 mg/kg/day benzo(a)pyrene (BaP) by oral gavage for 28 days and sperm sampled 42 days after the end of exposure to measure effects on dividing spermatogonia. DNA was diluted to a single genome per PCR well for amplification of microsatellites in singleplex and multiplex reactions, and alleles were sized to identify mutations using capillary electrophoresis. Analysis of ~300-500 molecules per animal at both microsatellite loci, when tested individually, showed a ~2-fold increase in mutations relative to the controls at both the 50 and 100 mg/kg/day BaP doses. Multiplex SM-PCR revealed similar increases in mutation frequencies in both microsatellites. Comparison with results from a previous lacZ mutation assay conducted on the same mice revealed that although microsatellite mutations are a sensitive endpoint for detecting changes in mutation frequencies at lower doses, they appear to be saturable and thus have a reduced dynamic range. These results confirm that BaP is a male germ cell mutagen that broadly impacts tandem repeat DNA. Likewise, addition of a second hypervariable microsatellite increases the sensitivity of this assay.
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Affiliation(s)
- Andrea Rowan-Carroll
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Marc A Beal
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Andrew Williams
- Biostatistics and Epidemiology Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Francesco Marchetti
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Carole L Yauk
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada
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Esakky P, Moley KH. Paternal smoking and germ cell death: A mechanistic link to the effects of cigarette smoke on spermatogenesis and possible long-term sequelae in offspring. Mol Cell Endocrinol 2016; 435:85-93. [PMID: 27424142 PMCID: PMC5014701 DOI: 10.1016/j.mce.2016.07.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 07/10/2016] [Accepted: 07/11/2016] [Indexed: 12/12/2022]
Abstract
Paternal exposure to constituents of cigarette smoke (CS) is reportedly associated with infertility, birth defects and childhood cancers even though the mechanism behind this relationship is still unclear. Chronic cigarette smoking by men leads to poor sperm quality and quantity mainly through oxidative stress and also direct assault by CS metabolites. Among several carcinogenic and teratogenic components of cigarette smoke condensate (CSC), polycyclic aromatic hydrocarbons (PAHs) display a preeminent role in accelerating germ cell death via the cytoplasmic transcription factor, aryl hydrocarbon receptor (AHR) that is present across all stages of spermatogenesis. Activation of AHR by growth factors though benefits normal cellular functions, its mediation by CSC in a spermatocyte cell line [Gc2(spd)ts] adversely affects the expression of a battery of genes associated with antioxidant mechanisms, cell proliferation and apoptosis, and cell cycle progress. Besides, the CSC-mediated cross talk either between AHR and NRF2 or AHR-NRF2 and MAPKs pathways inhibits normal proliferation of the spermatogenic GC-2spd(ts) cells in vitro and cell death of spermatocytes in vivo. Pharmacological inactivation of CSC-induced AHR but not its genetic manipulation seems preventing DNA and cell membrane damage in Gc2(spd)ts. Data from recent reports suggest that the cigarette smoke affects both the genomic and epigenomic components of the sperm and attributes any associated changes to developmental defects in the offspring. Thus, the studies discussed here in this review shed light on possible mechanistic factors that could probably be responsible for the paternally mediated birth defects in the offspring following exposure to the toxic constituents of cigarette smoke.
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Affiliation(s)
- Prabagaran Esakky
- Research, Department of Veterans Affairs Medical Center, St. Louis, MO, USA; Department of Obstetrics and Gynecology, Washington University School of Medicine in St. Louis, MO 63110, USA.
| | - Kelle H Moley
- Research, Department of Veterans Affairs Medical Center, St. Louis, MO, USA; Department of Obstetrics and Gynecology, Washington University School of Medicine in St. Louis, MO 63110, USA.
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