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Le Tortorec A, Matusali G, Mahé D, Aubry F, Mazaud-Guittot S, Houzet L, Dejucq-Rainsford N. From Ancient to Emerging Infections: The Odyssey of Viruses in the Male Genital Tract. Physiol Rev 2020; 100:1349-1414. [PMID: 32031468 DOI: 10.1152/physrev.00021.2019] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The male genital tract (MGT) is the target of a number of viral infections that can have deleterious consequences at the individual, offspring, and population levels. These consequences include infertility, cancers of male organs, transmission to the embryo/fetal development abnormalities, and sexual dissemination of major viral pathogens such as human immunodeficiency virus (HIV) and hepatitis B virus. Lately, two emerging viruses, Zika and Ebola, have additionally revealed that the human MGT can constitute a reservoir for viruses cleared from peripheral circulation by the immune system, leading to their sexual transmission by cured men. This represents a concern for future epidemics and further underlines the need for a better understanding of the interplay between viruses and the MGT. We review here how viruses, from ancient viruses that integrated the germline during evolution through old viruses (e.g., papillomaviruses originating from Neanderthals) and more modern sexually transmitted infections (e.g., simian zoonotic HIV) to emerging viruses (e.g., Ebola and Zika) take advantage of genital tract colonization for horizontal dissemination, viral persistence, vertical transmission, and endogenization. The MGT immune responses to viruses and the impact of these infections are discussed. We summarize the latest data regarding the sources of viruses in semen and the complex role of this body fluid in sexual transmission. Finally, we introduce key animal findings that are relevant for our understanding of viral infection and persistence in the human MGT and suggest future research directions.
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Affiliation(s)
- Anna Le Tortorec
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Giulia Matusali
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Dominique Mahé
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Florence Aubry
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Séverine Mazaud-Guittot
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Laurent Houzet
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Nathalie Dejucq-Rainsford
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
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52
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A paternal hypercaloric diet affects the metabolism and fertility of F1 and F2 Wistar rat generations. J Dev Orig Health Dis 2020; 11:653-663. [PMID: 31937389 DOI: 10.1017/s2040174419000904] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Increased fat and carbohydrate intakes based on the Western diet are important lifestyle modifications that lead to hypercaloric inputs, obesity, and male fertility negative effects. Epigenetic transmission may also predispose descended generations to chronic diseases, such as obesity, type 2 diabetes, behavioral, and reproductive disorders. The present study sought to evaluate the influence of a high-fat-high-sugar (HFHS) diet supplied to Wistar rats from 25 to 90 days of life on reproductive and metabolic parameters in male generations F0, F1, and F2. The standard group received the normocaloric - Nuvilab Quimtia® -3.86 kcal/kg. The hypercaloric diet (HD) group received the HFHS diet - PragSoluções® -4.77 kcal/kg. Body weight, adiposity, F1 and F2 prepubertal age evaluations, oral glucose tolerance test, insulin tolerance test, organ weights, sperm count and morphology assessments, and histometric testicular analyses were performed. The HFHS diet promoted dyslipidemia, higher adiposity, lower relative organ weights, and higher mean kidney weight, decreased mean testicle and parenchyma weights and lower height of seminiferous epithelium (HE) for the F0 generation. F1 and F2 offspring of HD group displayed early preprepubertal development, although did not alter the metabolic parameters. Decreased HE and tubular testicular compartment volumetric density and increased intertubular testicular compartment volumetric density and volume in the F1 generation of HD group were observed. Alterations in histometry of intertubular testicular compartment were also noted. It is concluded that the HFHS experimental model altered only paternal metabolic parameters. However, reproductive parameters of the three generations were affected.
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53
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Sperm RNA: Quo vadis? Semin Cell Dev Biol 2020; 97:123-130. [DOI: 10.1016/j.semcdb.2019.07.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 06/26/2019] [Accepted: 07/08/2019] [Indexed: 12/27/2022]
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Evolving Role of RING1 and YY1 Binding Protein in the Regulation of Germ-Cell-Specific Transcription. Genes (Basel) 2019; 10:genes10110941. [PMID: 31752312 PMCID: PMC6895862 DOI: 10.3390/genes10110941] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/07/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022] Open
Abstract
Separation of germline cells from somatic lineages is one of the earliest decisions of embryogenesis. Genes expressed in germline cells include apoptotic and meiotic factors, which are not transcribed in the soma normally, but a number of testis-specific genes are active in numerous cancer types. During germ cell development, germ-cell-specific genes can be regulated by specific transcription factors, retinoic acid signaling and multimeric protein complexes. Non-canonical polycomb repressive complexes, like ncPRC1.6, play a critical role in the regulation of the activity of germ-cell-specific genes. RING1 and YY1 binding protein (RYBP) is one of the core members of the ncPRC1.6. Surprisingly, the role of Rybp in germ cell differentiation has not been defined yet. This review is focusing on the possible role of Rybp in this process. By analyzing whole-genome transcriptome alterations of the Rybp-/- embryonic stem (ES) cells and correlating this data with experimentally identified binding sites of ncPRC1.6 subunits and retinoic acid receptors in ES cells, we propose a model how germ-cell-specific transcription can be governed by an RYBP centered regulatory network, underlining the possible role of RYBP in germ cell differentiation and tumorigenesis.
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55
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Sun P, Zhang SJ, Maksim S, Yao YF, Liu HM, Du J. Epigenetic Modification in Macrophages: A Promising Target for Tumor and Inflammation-associated Disease Therapy. Curr Top Med Chem 2019; 19:1350-1362. [PMID: 31215380 DOI: 10.2174/1568026619666190619143706] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 04/25/2019] [Accepted: 05/09/2019] [Indexed: 01/13/2023]
Abstract
Macrophages are essential for supporting tissue homeostasis, regulating immune response, and promoting tumor progression. Due to its heterogeneity, macrophages have different phenotypes and functions in various tissues and diseases. It is becoming clear that epigenetic modification playing an essential role in determining the biological behavior of cells. In particular, changes of DNA methylation, histone methylation and acetylation regulated by the corresponding epigenetic enzymes, can directly control macrophages differentiation and change their functions under different conditions. In addition, epigenetic enzymes also have become anti-tumor targets, such as HDAC, LSD1, DNMT, and so on. In this review, we presented an overview of the latest progress in the study of macrophages phenotype and function regulated by epigenetic modifications, including DNA methylation and histone modifications, to better understand how epigenetic modification controls macrophages phenotype and function in inflammation-associated diseases, and the application prospect in anti-tumor.
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Affiliation(s)
- Pei Sun
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,Co-Innovation Center of Henan Province for New Drug R & D and Preclinical Safety, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education of China, Zhengzhou, China
| | - Shu-Jing Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,Co-Innovation Center of Henan Province for New Drug R & D and Preclinical Safety, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education of China, Zhengzhou, China
| | - Semenov Maksim
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,Co-Innovation Center of Henan Province for New Drug R & D and Preclinical Safety, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education of China, Zhengzhou, China
| | - Yong-Fang Yao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,Co-Innovation Center of Henan Province for New Drug R & D and Preclinical Safety, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education of China, Zhengzhou, China
| | - Hong-Min Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,Co-Innovation Center of Henan Province for New Drug R & D and Preclinical Safety, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education of China, Zhengzhou, China
| | - Juan Du
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
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56
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Franzago M, La Rovere M, Guanciali Franchi P, Vitacolonna E, Stuppia L. Epigenetics and human reproduction: the primary prevention of the noncommunicable diseases. Epigenomics 2019; 11:1441-1460. [PMID: 31596147 DOI: 10.2217/epi-2019-0163] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Epigenetic regulation of gene expression plays a key role in affecting human health and diseases with particular regard to human reproduction. The major concern in this field is represented by the epigenetic modifications in the embryo and the increased risk of long-life disorders induced by the use of assisted reproduction techniques, able to affect the epigenetic assessment in the first steps of embryo development. In this review, we analyze the correlation between epigenetic modifications and human reproduction, suggesting that the reversibility of the epigenetic processes could represent a novel resource for the treatment of the couple's infertility and that parental lifestyle in periconceptional period could be considered as an important issue of primary prevention.
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Affiliation(s)
- Marica Franzago
- Department of Medicine & Aging, School of Medicine & Health Sciences, 'G. d'Annunzio' University, Chieti-Pescara, Chieti, Italy.,Center for Aging Studies & Translational Medicine (CESI-MET), 'G. d'Annunzio' University of Chieti-Pescara, Chieti, Italy
| | - Marina La Rovere
- Department of Psychological, Health & Territorial Sciences, School of Medicine & Health Sciences, 'G. d'Annunzio' University of Chieti-Pescara, Chieti, Italy
| | - Paolo Guanciali Franchi
- Department of Medical, Oral & Biotechnological Sciences, School of Medicine & Health Sciences, 'G. d'Annunzio' University of Chieti-Pescara, Chieti, Italy
| | - Ester Vitacolonna
- Department of Medicine & Aging, School of Medicine & Health Sciences, 'G. d'Annunzio' University, Chieti-Pescara, Chieti, Italy
| | - Liborio Stuppia
- Center for Aging Studies & Translational Medicine (CESI-MET), 'G. d'Annunzio' University of Chieti-Pescara, Chieti, Italy.,Department of Psychological, Health & Territorial Sciences, School of Medicine & Health Sciences, 'G. d'Annunzio' University of Chieti-Pescara, Chieti, Italy
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57
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Zhai QY, Ge W, Wang JJ, Sun XF, Ma JM, Liu JC, Zhao Y, Feng YZ, Dyce PW, De Felici M, Shen W. Exposure to Zinc oxide nanoparticles during pregnancy induces oocyte DNA damage and affects ovarian reserve of mouse offspring. Aging (Albany NY) 2019; 10:2170-2189. [PMID: 30153657 PMCID: PMC6128443 DOI: 10.18632/aging.101539] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 06/23/2018] [Indexed: 12/22/2022]
Abstract
Zinc oxide nanoparticles (nZnO) have been shown to have higher toxic effects likely due to their ion-shedding ability and low solubility under neutral conditions. In order to investigate whether exposure to nZnO during embryonic development affects ovary development, 12.5 day post coitum (dpc) fetal mouse ovaries were cultured in the presence of nZnO for 6 days. We found that the nanoparticles (NPs) accumulated within the oocyte cytoplasm in a dose dependent manner, caused DNA damage and apoptosis, and result in a significant decrease in oocyte numbers. No such effects were observed when the ovaries were incubated in the presence of ZnSO4 or bulk ZnO as controls. In addition, we injected intravenously 16 mg/kg body weight nZnO in 12.5 dpc pregnant mice on two consecutive days and analyzed the ovaries of fetuses or offspring at three critical periods of oogenesis: 17.5 dpc, 3 days post-partum (dpp) and 21 dpp. Evidence of increased DNA damage in pachytene oocytes in fetal ovaries and impaired primordial follicle assembly and folliculogenesis dynamics in the ovaries of the offspring were found. Our results indicate that certain types of NPs affect pre- and post-natal oogenesis in vitro and in vivo.
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Affiliation(s)
- Qiu-Yue Zhai
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Ge
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Jun-Jie Wang
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiao-Feng Sun
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Jin-Mei Ma
- Animal Husbandry and Veterinary Station of Penglai City, Yantai 265600, China
| | - Jing-Cai Liu
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Yong Zhao
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Yan-Zhong Feng
- Institute of Animal Sciences, Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang 150086, China
| | - Paul W Dyce
- Department of Animal Sciences, Auburn University, Auburn, AL 36849, USA
| | - Massimo De Felici
- Department of Biomedicine and Prevention, University of Rome 'Tor Vergata', Rome 00133, Italy
| | - Wei Shen
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
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58
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Tesarik J. Acquired Sperm DNA Modifications: Causes, Consequences, and Potential Solutions. EUROPEAN MEDICAL JOURNAL 2019. [DOI: 10.33590/emj/10312990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
DNA of human spermatozoa can be subject to various kinds of modifications acquired throughout life. Put simply, two basic types of acquired sperm DNA modifications can be distinguished: genetic and epigenetic. Genetic modifications cause alterations of the DNA sequence and mainly result from the formation of breakpoints leading to sperm DNA fragmentation. Epigenetic modifications include a vast spectrum of events that influence the expression of different genes without altering their DNA sequence. Both the genetic and the epigenetic modifications of sperm DNA can negatively influence embryonic development, cause miscarriages, and be the origin of different health problems for the offspring. As to sperm DNA fragmentation, reliable diagnostic methods are currently available. On the other hand, the detection of potentially harmful epigenetic modifications in spermatozoa is a much more complicated issue. Different treatment options can be chosen to solve problems associated with sperm DNA fragmentation. Some are relatively simple and noninvasive, based on oral treatments with antioxidants and other agents, depending on the underlying cause. In other cases, the recourse to different micromanipulation-assisted in vitro fertilisation techniques is necessary to select spermatozoa with minimal DNA damage to be injected into oocytes. The treatment of cases with epigenetic DNA modifications is still under investigation. Preliminary data suggest that some of the techniques used in cases of extensive DNA fragmentation can also be of help in those of epigenetic modifications; however, further progress will depend on the availability of more reliable diagnostic methods with which it will be possible to evaluate the effects of different therapeutic interventions.
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59
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Johannessen A, Lønnebotn M, Calciano L, Benediktsdóttir B, Bertelsen RJ, Bråbäck L, Dharmage S, Franklin KA, Gislason T, Holm M, Janson C, Jarvis D, Jõgi R, Kim JL, Kirkeleit J, Lodge C, Malinovschi A, Martinez-Moratalla J, Nilsen RM, Pereira-Vega A, Real FG, Schlünssen V, Accordini S, Svanes C. Being overweight in childhood, puberty, or early adulthood: Changing asthma risk in the next generation? J Allergy Clin Immunol 2019; 145:791-799.e4. [PMID: 31505189 DOI: 10.1016/j.jaci.2019.08.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 08/20/2019] [Accepted: 08/22/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Overweight status and asthma have increased during the last decades. Being overweight is a known risk factor for asthma, but it is not known whether it might also increase asthma risk in the next generation. OBJECTIVE We aimed to examine whether parents being overweight in childhood, adolescence, or adulthood is associated with asthma in their offspring. METHODS We included 6347 adult offspring (age, 18-52 years) investigated in the Respiratory Health in Northern Europe, Spain and Australia (RHINESSA) multigeneration study of 2044 fathers and 2549 mothers (age, 37-66 years) investigated in the European Community Respiratory Health Survey (ECRHS) study. Associations of parental overweight status at age 8 years, puberty, and age 30 years with offspring's childhood overweight status (potential mediator) and offspring's asthma with or without nasal allergies (outcomes) was analyzed by using 2-level logistic regression and 2-level multinomial logistic regression, respectively. Counterfactual-based mediation analysis was performed to establish whether observed associations were direct or indirect effects mediated through the offspring's own overweight status. RESULTS We found statistically significant associations between both fathers' and mothers' childhood overweight status and offspring's childhood overweight status (odds ratio, 2.23 [95% CI, 1.45-3.42] and 2.45 [95% CI, 1.86-3.22], respectively). We also found a statistically significant effect of fathers' onset of being overweight in puberty on offspring's asthma without nasal allergies (relative risk ratio, 2.31 [95% CI, 1.23-4.33]). This effect was direct and not mediated through the offspring's own overweight status. No effect on offspring's asthma with nasal allergies was found. CONCLUSION Our findings suggest that metabolic factors long before conception can increase asthma risk and that male puberty is a time window of particular importance for offspring's health.
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Affiliation(s)
- Ane Johannessen
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway; Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - Marianne Lønnebotn
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway; Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway.
| | - Lucia Calciano
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Bryndis Benediktsdóttir
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland; Department of Sleep, Landspitali University Hospital, Reykjavik, Iceland
| | | | - Lennart Bråbäck
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå, Sweden
| | - Shyamali Dharmage
- Allergy and Lung Health Unit, School of Population and Global Health, University of Melbourne, Melbourne, Australia
| | - Karl A Franklin
- Department of Surgical and Perioperative Sciences, Surgery, Umeå University, Umeå, Sweden
| | - Thorarinn Gislason
- Department of Sleep, Landspitali University Hospital, Reykjavik, Iceland
| | - Mathias Holm
- Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Christer Janson
- Department of Medical Sciences, Respiratory, Allergy & Sleep Research, Uppsala University, Uppsala, Sweden
| | - Deborah Jarvis
- Faculty of Medicine, National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Rain Jõgi
- Lung Clinic, Tartu University Hospital, Tartu, Estonia
| | - Jeong-Lim Kim
- Occupational and Environmental Medicine, Department of Public Health and Community Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jorunn Kirkeleit
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Caroline Lodge
- Department of Population Health, University of Melbourne, Melbourne, Australia
| | | | - Jesus Martinez-Moratalla
- Servicio de Neurología del Complejo Hospitalario Universitario de Albacete (CHUA), Servicio de Salud de Castilla-La Mancha (SESCAM), Albacete, Spain
| | | | | | - Francisco Gómez Real
- Department of Clinical Science, University of Bergen, Bergen, Norway; Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway
| | - Vivi Schlünssen
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Simone Accordini
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Cecilie Svanes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway; Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
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Abstract
OBJECTIVE The Developmental Origins of Disease hypothesis has spurred increased interest in how prenatal exposures affect lifelong health, while mechanisms such as epigenetics may explain the multigenerational influences on health. Such factors are not well captured within conventional epidemiologic study designs. We explored the feasibility of collecting information on the offspring and grand-offspring of participants in a long-running study. DESIGN The Bogalusa Heart Study is a study, begun in 1973, of life-course cardiovascular health in a semirural population (65% white and 35% black). MAIN MEASURES Female participants who had previously provided information on their pregnancies were contacted to obtain contact information for their daughters aged 12 and older. Daughters were then contacted to obtain reproductive histories, and invited for a clinic or lab visit to measure cardiovascular risk factors. RESULTS Two hundred seventy-four daughters of 208 mothers were recruited; 81% (223) had a full clinic visit and 19% (51) a phone interview only. Forty-five percent of the daughters were black, and 55% white. Mean and median age at interview was 27, with 15% under the age of 18. The strongest predictors of participation were black race, recent maternal participation in the parent study, and living in or near Bogalusa. Simple correlations for cardiovascular risk factors across generations were between r = 0.19 (systolic blood pressure) and r = 0.39 (BMI, LDL). CONCLUSION It is feasible to contact the children of study participants even when participants are adults, and initial information on the grandchildren can also be determined in this manner.
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61
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Ge W, Li L, Dyce PW, De Felici M, Shen W. Establishment and depletion of the ovarian reserve: physiology and impact of environmental chemicals. Cell Mol Life Sci 2019; 76:1729-1746. [PMID: 30810760 PMCID: PMC11105173 DOI: 10.1007/s00018-019-03028-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/19/2019] [Accepted: 01/28/2019] [Indexed: 01/09/2023]
Abstract
The reproductive life span in women starts at puberty and ends at menopause, following the exhaustion of the follicle stockpile termed the ovarian reserve. Increasing data from experimental animal models and epidemiological studies indicate that exposure to a number of ubiquitously distributed reproductively toxic environmental chemicals (RTECs) can contribute to earlier menopause and even premature ovarian failure. However, the causative relationship between environmental chemical exposure and earlier menopause in women remains poorly understood. The present work, is an attempt to review the current evidence regarding the effects of RTECs on the main ovarian activities in mammals, focusing on how such compounds can affect the ovarian reserve at any stages of ovarian development. We found that in rodents, strong evidence exists that in utero, neonatal, prepubescent and even adult exposure to RTECs leads to impaired functioning of the ovary and a shortening of the reproductive lifespan. Regarding human, data from cross-sectional surveys suggest that human exposure to certain environmental chemicals can compromise a woman's reproductive health and in some cases, correlate with earlier menopause. In conclusion, evidences exist that exposure to RTECs can compromise a woman's reproductive health. However, human exposures may date back to the developmental stage, while the adverse effects are usually diagnosed decades later, thus making it difficult to determine the association between RTECs exposure and human reproductive health. Therefore, epidemiological surveys and more experimental investigation on humans, or alternatively primates, are needed to determine the direct and indirect effects caused by RTECs exposure on the ovary function, and to characterize their action mechanisms.
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Affiliation(s)
- Wei Ge
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Lan Li
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Paul W Dyce
- Department of Animal Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Massimo De Felici
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133, Rome, Italy.
| | - Wei Shen
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, 266109, China.
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62
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Abstract
Mammalian oocytes carry specific nongenetic information, including DNA methylation to the next generation, which is important for development and disease. However, evaluation and manipulation of specific methylation for both functional analysis and therapeutic purposes remains challenging. Here, we demonstrate evaluation of specific methylation in single oocytes from its sibling first polar body (PB1) and manipulation of specific methylation in single oocytes by microinjection-mediated dCas9-based targeted methylation editing. We optimized a single-cell bisulfite sequencing approach with high efficiency and demonstrate that the PB1 carries similar methylation profiles at specific regions to its sibling oocyte. By bisulfite sequencing of a single PB1, the methylation information regarding agouti viable yellow (A vy )-related coat color, as well as imprinting linked parthenogenetic development competency, in a single oocyte can be efficiently evaluated. Microinjection-based dCas9-Tet/Dnmt-mediated methylation editing allows targeted manipulation of specific methylation in single oocytes. By targeted methylation editing, we were able to reverse A vy -related coat color, generate full-term development of bimaternal mice, and correct familial Angelman syndrome in a mouse model. Our work will facilitate the investigation of specific methylation events in oocytes and provides a strategy for prevention and correction of maternally transmitted nongenetic disease or disorders.
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63
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Sharpe RM. Of mice and men: long-term safety of assisted reproduction treatments. Hum Reprod 2019; 33:793-796. [PMID: 29635456 DOI: 10.1093/humrep/dey071] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 03/09/2018] [Indexed: 12/16/2022] Open
Affiliation(s)
- Richard M Sharpe
- MRC Centre for Reproductive Health, The Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
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64
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Hein S, Thomas T, Yu. Naumova O, Luthar SS, Grigorenko EL. Negative parenting modulates the association between mother’s DNA methylation profiles and adult offspring depression. Dev Psychobiol 2018; 61:304-310. [DOI: 10.1002/dev.21789] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/27/2018] [Accepted: 09/13/2018] [Indexed: 12/19/2022]
Affiliation(s)
| | | | - Oxana Yu. Naumova
- University of Houston; Houston Texas
- Vavilov Institute of General Genetics RAS; St. Petersburg State University; Saint Petersburg Russia
| | | | - Elena L. Grigorenko
- University of Houston; Houston Texas
- St. Petersburg State University; Saint Petersburg Russia
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Early post-conception maternal cortisol, children’s HPAA activity and DNA methylation profiles. J Dev Orig Health Dis 2018; 10:73-87. [DOI: 10.1017/s2040174418000880] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractThe hypothalamic–pituitary–adrenal axis (HPAA) plays a critical role in the functioning of all other biological systems. Thus, studying how the environment may influence its ontogeny is paramount to understanding developmental origins of health and disease. The early post-conceptional (EPC) period could be particularly important for the HPAA as the effects of exposures on organisms’ first cells can be transmitted through all cell lineages. We evaluate putative relationships between EPC maternal cortisol levels, a marker of physiologic stress, and their children’s pre-pubertal HPAA activity (n=22 dyads). Maternal first-morning urinary (FMU) cortisol, collected every-other-day during the first 8 weeks post-conception, was associated with children’s FMU cortisol collected daily around the start of the school year, a non-experimental challenge, as well as salivary cortisol responses to an experimental challenge (all Ps<0.05), with some sex-related differences. We investigated whether epigenetic mechanisms statistically mediated these links and, therefore, could provide cues as to possible biological pathways involved. EPC cortisol was associated with >5% change in children’s buccal epithelial cells’ DNA methylation for 867 sites, while children’s HPAA activity was associated with five CpG sites. Yet, no CpG sites were related to both, EPC cortisol and children’s HPAA activity. Thus, these epigenetic modifications did not statistically mediate the observed physiological links. Larger, prospective peri-conceptional cohort studies including frequent bio-specimen collection from mothers and children will be required to replicate our analyses and, if our results are confirmed, identify biological mechanisms mediating the statistical links observed between maternal EPC cortisol and children’s HPAA activity.
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Zhou Y, Zhu H, Wu HY, Jin LY, Chen B, Pang HY, Ming ZH, Cheng Y, Zhou CL, Guo MX, Huang YT, Yu DQ, Sheng JZ, Huang HF. Diet-Induced Paternal Obesity Impairs Cognitive Function in Offspring by Mediating Epigenetic Modifications in Spermatozoa. Obesity (Silver Spring) 2018; 26:1749-1757. [PMID: 30358144 DOI: 10.1002/oby.22322] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 12/21/2022]
Abstract
OBJECTIVE This study aimed to determine the effects of diet-induced paternal obesity on cognitive function in mice offspring. METHODS Male mice (F0) were randomized to receive either a control diet (10 kcal% fat) or a high-fat diet (HFD; 60 kcal% fat) for 10 weeks before being mated with normal females to generate F1 offspring. Male F1 offspring were mated with normal females to generate F2 offspring. Behavioral tests were used to assess cognitive functions in F1 and F2 offspring. Reduced representation bisulfite sequencing was used to the explore mechanisms of epigenetic inheritance. RESULTS HFD-induced paternal obesity resulted in cognitive impairments in F1 offspring, potentially due, at least in part, to increased methylation of the BDNF gene promoter, which was inherited from F0 spermatozoa. BDNF/tyrosine receptor kinase B signaling was associated with cognitive impairments in HFD-fed F1 offspring. However, there were no significant changes in F2 offspring. CONCLUSIONS The findings provide evidence of intergenerational effects of paternal obesity on cognitive function in offspring occurring via epigenetic spermatozoan modifications.
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Affiliation(s)
- Yin Zhou
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Center for Reproductive Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hong Zhu
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hai-Yan Wu
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Lu-Yang Jin
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Bin Chen
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hai-Yan Pang
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhen-Hua Ming
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yi Cheng
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Cheng-Liang Zhou
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Meng-Xi Guo
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Ting Huang
- Center for Reproductive Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Dan-Qing Yu
- Center for Reproductive Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jian-Zhong Sheng
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - He-Feng Huang
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Su-Keene EJ, Bonilla MM, Padua MV, Zeh DW, Zeh JA. Simulated climate warming and mitochondrial haplogroup modulate testicular small non-coding RNA expression in the neotropical pseudoscorpion, Cordylochernes scorpioides. ENVIRONMENTAL EPIGENETICS 2018; 4:dvy027. [PMID: 30595847 PMCID: PMC6305488 DOI: 10.1093/eep/dvy027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/22/2018] [Accepted: 10/21/2018] [Indexed: 06/01/2023]
Abstract
Recent theory suggests that tropical terrestrial arthropods are at significant risk from climate warming. Metabolic rate in such ectothermic species increases exponentially with environmental temperature, and a small temperature increase in a hot environment can therefore have a greater physiological impact than a large temperature increase in a cool environment. In two recent studies of the neotropical pseudoscorpion, Cordylochernes scorpioides, simulated climate warming significantly decreased survival, body size and level of sexual dimorphism. However, these effects were minor compared with catastrophic consequences for male fertility and female fecundity, identifying reproduction as the life stage most vulnerable to climate warming. Here, we examine the effects of chronic high-temperature exposure on epigenetic regulation in C. scorpioides in the context of naturally occurring variation in mitochondrial DNA. Epigenetic mechanisms, including DNA methylation, histone modifications and small non-coding RNA (sncRNA) expression, are particularly sensitive to environmental factors such as temperature, which can induce changes in epigenetic states and phenotypes that may be heritable across generations. Our results indicate that exposure of male pseudoscorpions to elevated temperature significantly altered the expression of >60 sncRNAs in testicular tissue, specifically microRNAs and piwi-interacting RNAs. Mitochondrial haplogroup was also a significant factor influencing both sncRNAs and mitochondrial gene expression. These findings demonstrate that chronic heat stress causes changes in epigenetic profiles that may account for reproductive dysfunction in C. scorpioides males. Moreover, through its effects on epigenetic regulation, mitochondrial DNA polymorphism may provide the potential for an adaptive evolutionary response to climate warming.
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Affiliation(s)
- Eleanor J Su-Keene
- Department of Biology, University of Nevada, Reno, Reno, NV, USA
- Department of Educational Leadership and Research Methodology, Florida Atlantic University, Boca Raton, FL, USA
| | - Melvin M Bonilla
- Graduate Program in Ecology, Evolution and Conservation Biology, University of Nevada, Reno, Reno, NV, USA
- Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA
| | - Michael V Padua
- Department of Biology, University of Nevada, Reno, Reno, NV, USA
- University of Nevada, Reno School of Medicine, Reno, NV, USA
| | - David W Zeh
- Department of Biology, University of Nevada, Reno, Reno, NV, USA
- Graduate Program in Ecology, Evolution and Conservation Biology, University of Nevada, Reno, Reno, NV, USA
| | - Jeanne A Zeh
- Department of Biology, University of Nevada, Reno, Reno, NV, USA
- Graduate Program in Ecology, Evolution and Conservation Biology, University of Nevada, Reno, Reno, NV, USA
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68
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Potabattula R, Dittrich M, Böck J, Haertle L, Müller T, Hahn T, Schorsch M, Hajj NE, Haaf T. Allele-specific methylation of imprinted genes in fetal cord blood is influenced by cis-acting genetic variants and parental factors. Epigenomics 2018; 10:1315-1326. [PMID: 30238782 PMCID: PMC6240887 DOI: 10.2217/epi-2018-0059] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: To examine the effects of genetic variation, parental age and BMI on parental allele-specific methylation of imprinted genes in fetal cord blood samples. Methodology: We have developed SNP genotyping and deep bisulphite sequencing assays for six imprinted genes to determine parental allele-specific methylation patterns in diploid somatic tissues. Results: Multivariate linear regression analyses revealed a negative correlation of paternal age with paternal MEG3 allele methylation in fetal cord blood. Methylation of the maternal PEG3 allele showed a positive correlation with maternal age. Paternal BMI was positively correlated with paternal MEST allele methylation. In addition to parental origin, allele-specific methylation of most imprinted genes was largely dependent on the underlying SNP haplotype. Conclusion: Our study supports the idea that parental factors can have an impact, although of small effect size, on the epigenome of the next generation, providing an additional layer of complexity to phenotypic diversity.
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Affiliation(s)
- Ramya Potabattula
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Marcus Dittrich
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany.,Department of Bioinformatics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Julia Böck
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Larissa Haertle
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Tobias Müller
- Department of Bioinformatics, Julius Maximilians University, 97074 Würzburg, Germany
| | | | | | - Nady El Hajj
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Thomas Haaf
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
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González B, Pantoja CRG, Sosa MH, Vitullo AD, Bisagno V, González CR. Cocaine alters the mouse testicular epigenome with direct impact on histone acetylation and DNA methylation marks. Reprod Biomed Online 2018; 37:269-278. [PMID: 30126647 DOI: 10.1016/j.rbmo.2018.05.014] [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: 10/23/2017] [Revised: 05/18/2018] [Accepted: 05/18/2018] [Indexed: 11/29/2022]
Abstract
RESEARCH QUESTION Recent evidence suggests that cocaine administration in animal models can trigger non-genetic inheritance of addiction traits from father to offspring, affecting development and behaviour. Is chronic cocaine intake involved in alterations of epigenetic homeostasis in the testis? DESIGN Epigenetic marks and mediators in testis and isolated germ cells of adult mice treated with cocaine (10 mg/kg) or vehicle (sterile saline solution) were evaluated in an intermittent binge protocol: three intraperitoneal injections, 1 h apart, one day on/off for 13 days, collecting tissue 24 h after the last binge administration (day 14). RESULTS It was shown that chronic cocaine intake in mice disrupts testicular epigenetic homeostasis, increasing global methylated cytosine levels in DNA from germ cells and sperm. Cocaine also increased testicular and germ cell acetylated histone 3 and 4 and decreased expression of histone deacetylases HDAC1/2. Immunolocalization studies showed that HDAC1/2 and acetylated histone 3 and 4 proteins localize to meiotic germ cells. Analysis of mRNA expression in isolated germ cells shows decreased levels of Hdac1/2/8, Dnmt3b and Tet1 and increased levels of Dnmt3a gene expression after cocaine treatment. CONCLUSIONS Cocaine intake is associated with testicular toxicity and significant reproductive function impairment. The results presented here broaden the basic knowledge of the impact of addictive stimulants on testicular pathophysiology, fertility and male reproductive health and imply that altered epigenetic homeostasis by cocaine may have potential consequences on future generations.
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Affiliation(s)
- Betina González
- Instituto de Investigaciones Farmacológicas (Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas), Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Camilo R Gambini Pantoja
- Instituto de Investigaciones Farmacológicas (Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas), Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Maximo H Sosa
- Instituto de Investigaciones Farmacológicas (Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas), Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Alfredo D Vitullo
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Verónica Bisagno
- Instituto de Investigaciones Farmacológicas (Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas), Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Candela R González
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina.
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70
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Rossitto M, Marchive C, Pruvost A, Sellem E, Ghettas A, Badiou S, Sutra T, Poulat F, Philibert P, Boizet-Bonhoure B. Intergenerational effects on mouse sperm quality after in utero exposure to acetaminophen and ibuprofen. FASEB J 2018; 33:339-357. [PMID: 29979629 DOI: 10.1096/fj.201800488rrr] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nonsteroidal antiinflammatory drugs and analgesic drugs, such as N-acetyl- p-aminophenol (APAP; acetaminophen, paracetamol), are widely used by pregnant women. Accumulating evidence has indicated that these molecules can favor genital malformations in newborn boys and reproductive disorders in adults. However, the consequences on postnatal testis development and adult reproductive health after exposure during early embryogenesis are still unknown. Using the mouse model, we show that in utero exposure to therapeutic doses of the widely used APAP-ibuprofen combination during the sex determination period leads to early differentiation and decreased proliferation of male embryonic germ cells, and early 5-methylcytosine and extracellular matrix protein deposition in 13.5 d postcoitum exposed testes. Consequently, in postnatal testes, Sertoli-cell maturation is delayed, the Leydig-cell compartment is hyperplasic, and the spermatogonia A pool is decreased. This results in a reduced production of testosterone and in epididymal sperm parameter defects. We observed a reduced sperm count (19%) in utero-exposed (F0) adult males and also a reduced sperm motility (40%) in their offspring (F1) when both parents were exposed, which leads to subfertility among the 6 mo old F1 animals. Our study suggests that the use of these drugs during the critical period of sex determination affects the germ-line development and leads to adverse effects that could be passed to the offspring.-Rossitto, M., Marchive, C., Pruvost, A., Sellem, E., Ghettas, A., Badiou, S., Sutra, T., Poulat, F., Philibert, P., Boizet-Bonhoure, B. Intergenerational effects on mouse sperm quality after in utero exposure to acetaminophen and ibuprofen.
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Affiliation(s)
- Moïra Rossitto
- Institute of Human Genetics, Centre National de la Recherche Scientifique (CNRS), University of Montpellier, Montpellier, France
| | - Candice Marchive
- Institute of Human Genetics, Centre National de la Recherche Scientifique (CNRS), University of Montpellier, Montpellier, France
| | - Alain Pruvost
- Service de Pharmacologie et d'Immunoanalyse (SPI), Small Molecules Analysis by Mass Spectrometry (SMArt-MS), Commissariat à l'Energie Atomique (CEA), Institut National de la Recherche Agronomique (INRA), Université Paris-Saclay, Gif sur Yvette, France
| | - Eli Sellem
- Research and Development Department, Allice, Biology of Reproduction, Institut National de la Recherche Agronomique (INRA) Domaine de Vilvert, Jouy en Josas, France
| | - Aurélie Ghettas
- Service de Pharmacologie et d'Immunoanalyse (SPI), Small Molecules Analysis by Mass Spectrometry (SMArt-MS), Commissariat à l'Energie Atomique (CEA), Institut National de la Recherche Agronomique (INRA), Université Paris-Saclay, Gif sur Yvette, France
| | - Stéphanie Badiou
- Département de Biochimie et d'Hormonologie, Hopital Lapeyronie, Centre Hospitalier Universitaire (CHU) de Montpellier; PhyMedExp, INSERM Unité 1046, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche (UMR) 9214, Université de Montpellier, Montpellier, France
| | - Thibault Sutra
- Département de Biochimie et d'Hormonologie, Hopital Lapeyronie, Centre Hospitalier Universitaire (CHU) de Montpellier; PhyMedExp, INSERM Unité 1046, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche (UMR) 9214, Université de Montpellier, Montpellier, France
| | - Francis Poulat
- Institute of Human Genetics, Centre National de la Recherche Scientifique (CNRS), University of Montpellier, Montpellier, France
| | - Pascal Philibert
- Institute of Human Genetics, Centre National de la Recherche Scientifique (CNRS), University of Montpellier, Montpellier, France.,Département de Biochimie et d'Hormonologie, Hopital Lapeyronie, Centre Hospitalier Universitaire (CHU) de Montpellier; PhyMedExp, INSERM Unité 1046, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche (UMR) 9214, Université de Montpellier, Montpellier, France
| | - Brigitte Boizet-Bonhoure
- Institute of Human Genetics, Centre National de la Recherche Scientifique (CNRS), University of Montpellier, Montpellier, France
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Bråbäck L, Lodge CJ, Lowe AJ, Dharmage SC, Olsson D, Forsberg B. Childhood asthma and smoking exposures before conception-A three-generational cohort study. Pediatr Allergy Immunol 2018. [PMID: 29512835 DOI: 10.1111/pai.12883] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Some human and animal studies have recently shown that maternal grandmother's smoking during pregnancy increases the risk of asthma in the grandchildren. We have investigated whether sex of the exposed parent and/or grandchild modifies the association between grandmaternal smoking and grandchild asthma. METHODS We formed a cohort study based on linkage of national registries with prospectively collected data over three generations. Smoking habits in early pregnancy were registered since 1982 and purchases of prescribed medication since 2005. In all, 10 329 children born since 2005 had information on maternal and grandmaternal smoking on both sides and were followed from birth up to 6 years of age. Ages when medication was purchased were used to classify the cohort into never, early transient (0-3 years), early persistent (0-3 and 4-6 years), and late-onset (4-6 years) phenotypes of childhood asthma. RESULTS Maternal grandmother's smoking was associated with an increased odds of early persistent asthma after adjustment for maternal smoking and other confounders (odds ratio 1.29, 95% confidence interval 1.10-1.51). Grandchild sex did not modify the association. Paternal grandmother's smoking was not associated with any of the asthma phenotypes. CONCLUSION Maternal but not paternal exposure to nicotine before conception was related to an increased risk of early persistent childhood asthma, but not other asthma phenotypes. Our findings are possibly consistent with a sex-specific mode of epigenetic transfer.
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Affiliation(s)
- Lennart Bråbäck
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Caroline J Lodge
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.,Allergy and Lung Health Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Vic., Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Vic., Australia
| | - Adrian J Lowe
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.,Allergy and Lung Health Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Vic., Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Vic., Australia
| | - Shyamali C Dharmage
- Allergy and Lung Health Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Vic., Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Vic., Australia
| | - David Olsson
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Bertil Forsberg
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
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Li Y, Lei X, Yin Z, Guo W, Wu S, Yang X. Transgenerational effects of paternal dietary Astragalus polysaccharides on spleen immunity of broilers. Int J Biol Macromol 2018; 115:90-97. [PMID: 29626604 DOI: 10.1016/j.ijbiomac.2018.04.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 03/23/2018] [Accepted: 04/03/2018] [Indexed: 01/02/2023]
Abstract
Our previous study indicated that paternal dietary Astragalus polysaccharides (APS) could induce endotoxin tolerance-like response in jejunum of offspring chickens. There exist positive interaction between intestinal mucosal immunity and systemic immunity. So we studied the transgenerational effect and nutri-epigenetic role of paternal dietary APS on spleen immunity. 64 one-day-old Avein breeder cocks were used in a single-factor design with 0 and 10g/kg APS, respectively, 4 replicated cages each group, and 8 birds each cage. When the breeder cocks at 40-week-age, semen of cocks was collected and used for hatching experiment to get broiler chickens. The paternal dietary APS could transgenerational up-regulated the serum type-I-interferon level of offspring chickens. In spleen of breeder cocks, the dietary APS didn't have any systematic effect on genes transcription. Whereas, the paternal dietary APS supplementation could induce endotoxin tolerance-like immune response (TLR4 pathway) in spleen of broiler chickens. But the APS had no significant effect on transcription of ET related regulators and promotor methylation of core regulators (TRIF, MyD88, and SOCS1). This means that the paternal dietary APS can transgenerational induce endotoxin tolerance-like immune response in spleen, and the fundamental cause of the this response might lies on its effect on intestinal mucosal immunity.
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Affiliation(s)
- Yulong Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xi'an, Shaanxi 712100, PR China
| | - Xinyu Lei
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xi'an, Shaanxi 712100, PR China
| | - Zhenchen Yin
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xi'an, Shaanxi 712100, PR China
| | - Wei Guo
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xi'an, Shaanxi 712100, PR China
| | - Shengru Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xi'an, Shaanxi 712100, PR China
| | - Xiaojun Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xi'an, Shaanxi 712100, PR China.
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Sharpe RM. Programmed for sex: Nutrition–reproduction relationships from an inter-generational perspective. Reproduction 2018; 155:S1-S16. [DOI: 10.1530/rep-17-0537] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 12/21/2017] [Indexed: 01/18/2023]
Abstract
Reproduction is our biological reason for being. Our physiology has been shaped via countless millennia of evolution with this one purpose in mind, so that at birth we are ‘programmed for sex’, although this will not kick-start functionally until puberty. Our development from an early embryo is focused on making us fit to reproduce and is intimately connected to nutrition and energy stores. Fluctuations in food supply has probably been a key evolutionary shaper of the reproductive process, and this review hypothesizes that we have developed rapid, non-genomic adaptive mechanisms to such fluctuations to better fit offspring to their perceived (nutritional) environment, thus giving them a reproductive advantage. There is abundant evidence for this notion from ‘fetal programming’ studies and from experimental ‘inter-generational’ studies involving manipulation of parental (especially paternal) diet and then examining metabolic changes in resulting offspring. It is argued that the epigenetic reprogramming of germ cells that occurs during fetal life, after fertilisation and during gametogenesis provides opportunities for sensing of the (nutritional) environment so as to affect adaptive epigenetic changes to alter offspring metabolic function. In this regard, there may be adverse effects of a modern Western diet, perhaps because it is deficient in plant-derived factors that are proven to be capable of altering the epigenome, folate being a prime example; we have evolved in tune with such factors. Therefore, parental and even grandparental diets may have consequences for health of future generations, but how important this might be and the precise epigenetic mechanisms involved are unknown.
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74
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Illum LRH, Bak ST, Lund S, Nielsen AL. DNA methylation in epigenetic inheritance of metabolic diseases through the male germ line. J Mol Endocrinol 2018; 60:R39-R56. [PMID: 29203518 DOI: 10.1530/jme-17-0189] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 12/04/2017] [Indexed: 12/26/2022]
Abstract
The global rise in metabolic diseases can be attributed to a complex interplay between biology, behavior and environmental factors. This article reviews the current literature concerning DNA methylation-based epigenetic inheritance (intergenerational and transgenerational) of metabolic diseases through the male germ line. Included are a presentation of the basic principles for DNA methylation in developmental programming, and a description of windows of susceptibility for the inheritance of environmentally induced aberrations in DNA methylation and their associated metabolic disease phenotypes. To this end, escapees, genomic regions with the intrinsic potential to transmit acquired paternal epigenetic information across generations by escaping the extensive programmed DNA demethylation that occurs during gametogenesis and in the zygote, are described. The ongoing descriptive and functional examinations of DNA methylation in the relevant biological samples, in conjugation with analyses of non-coding RNA and histone modifications, hold promise for improved delineation of the effect size and mechanistic background for epigenetic inheritance of metabolic diseases.
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Affiliation(s)
| | - Stine Thorhauge Bak
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Clinical Medicine, Endocrinology and Diabetes, Aarhus University Hospital, Aarhus, Denmark
| | - Sten Lund
- Department of Clinical Medicine, Endocrinology and Diabetes, Aarhus University Hospital, Aarhus, Denmark
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Sanchez-Garrido MA, Ruiz-Pino F, Velasco I, Barroso A, Fernandois D, Heras V, Manfredi-Lozano M, Vazquez MJ, Castellano JM, Roa J, Pinilla L, Tena-Sempere M. Intergenerational Influence of Paternal Obesity on Metabolic and Reproductive Health Parameters of the Offspring: Male-Preferential Impact and Involvement of Kiss1-Mediated Pathways. Endocrinology 2018; 159:1005-1018. [PMID: 29309558 DOI: 10.1210/en.2017-00705] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/19/2017] [Indexed: 12/12/2022]
Abstract
Obesity and its comorbidities are reaching epidemic proportions worldwide. Maternal obesity is known to predispose the offspring to metabolic disorders, independently of genetic inheritance. This intergenerational transmission has also been suggested for paternal obesity, with a potential negative impact on the metabolic and, eventually, reproductive health of the offspring, likely via epigenetic changes in spermatozoa. However, the neuroendocrine component of such phenomenon and whether paternal obesity sensitizes the offspring to the disturbances induced by high-fat diet (HFD) remain poorly defined. We report in this work the metabolic and reproductive impact of HFD in the offspring from obese fathers, with attention to potential sex differences and alterations of hypothalamic Kiss1 system. Lean and obese male rats were mated with lean virgin female rats; male and female offspring were fed HFD from weaning onward and analyzed at adulthood. The increases in body weight and leptin levels, but not glucose intolerance, induced by HFD were significantly augmented in the male, but not female, offspring from obese fathers. Paternal obesity caused a decrease in luteinizing hormone (LH) levels and exacerbated the drop in circulating testosterone and gene expression of its key biosynthetic enzymes caused by HFD in the male offspring. LH responses to central kisspeptin-10 administration were also suppressed in HFD males from obese fathers. In contrast, paternal obesity did not significantly alter gonadotropin levels in the female offspring fed HFD, although these females displayed reduced LH responses to kisspeptin-10. Our findings suggest that HFD-induced metabolic and reproductive disturbances are exacerbated by paternal obesity preferentially in males, whereas kisspeptin effects are affected in both sexes.
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Affiliation(s)
- Miguel Angel Sanchez-Garrido
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
| | - Francisco Ruiz-Pino
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Reina Sofia, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Inmaculada Velasco
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
| | - Alexia Barroso
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Daniela Fernandois
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
| | - Violeta Heras
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
| | - Maria Manfredi-Lozano
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
| | - Maria Jesus Vazquez
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Juan Manuel Castellano
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Juan Roa
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Reina Sofia, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Leonor Pinilla
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Reina Sofia, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Manuel Tena-Sempere
- Instituto Maimónides de Investigación Biomédica de Cordoba, University of Cordoba, Cordoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Reina Sofia, Cordoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
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Paternal transmission of early life traumatization through epigenetics: Do fathers play a role? Med Hypotheses 2017; 109:59-64. [DOI: 10.1016/j.mehy.2017.09.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 07/23/2017] [Accepted: 09/15/2017] [Indexed: 12/12/2022]
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78
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Meyer RG, Ketchum CC, Meyer-Ficca ML. Heritable sperm chromatin epigenetics: a break to remember†. Biol Reprod 2017; 97:784-797. [DOI: 10.1093/biolre/iox137] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/31/2017] [Indexed: 02/07/2023] Open
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79
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Gapp K, Bohacek J. Epigenetic germline inheritance in mammals: looking to the past to understand the future. GENES BRAIN AND BEHAVIOR 2017; 17:e12407. [PMID: 28782190 DOI: 10.1111/gbb.12407] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/15/2017] [Accepted: 08/03/2017] [Indexed: 12/25/2022]
Abstract
Life experiences can induce epigenetic changes in mammalian germ cells, which can influence the developmental trajectory of the offspring and impact health and disease across generations. While this concept of epigenetic germline inheritance has long been met with skepticism, evidence in support of this route of information transfer is now overwhelming, and some key mechanisms underlying germline transmission of acquired information are emerging. This review focuses specifically on sperm RNAs as causal vectors of inheritance. We examine how they might become altered in the germline, and how different classes of sperm RNAs might interact with other epimodifications in germ cells or in the zygote. We integrate the latest findings with earlier pioneering work in this field, point out major questions and challenges, and suggest how new experiments could address them.
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Affiliation(s)
- K Gapp
- Gurdon Institute, University of Cambridge, Cambridge, UK.,Wellcome Trust Sanger Institute, Hinxton, UK
| | - J Bohacek
- Laboratory of Molecular and Behavioral Neuroscience, Department of Health Sciences and Technology of ETH Zurich, Neuroscience Center Zurich, Switzerland
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80
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PERSISTENT EPIGENETIC MEMORY. Biotechniques 2017; 63:102-103. [PMID: 28911312 DOI: 10.2144/000114584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Nematodes transmit environmental information, such as temperature or food availability, across generations. Amber Dance looks at how this is possible.
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81
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Eriksen KG, Radford EJ, Silver MJ, Fulford AJC, Wegmüller R, Prentice AM. Influence of intergenerational in utero parental energy and nutrient restriction on offspring growth in rural Gambia. FASEB J 2017; 31:4928-4934. [PMID: 28778976 PMCID: PMC5636699 DOI: 10.1096/fj.201700017r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 07/10/2017] [Indexed: 12/11/2022]
Abstract
The prenatal environment can alter an individual’s developmental trajectory with long-lasting effects on health. Animal models demonstrate that the impact of the early life environment extends to subsequent generations, but there is a paucity of data from human populations on intergenerational transmission of environmentally induced phenotypes. Here we investigated the association of parental exposure to energy and nutrient restriction in utero on their children’s growth in rural Gambia. In a Gambian cohort with infants born between 1972 and 2011, we used multiple regression to test whether parental season of birth predicted offspring birth weight (n = 2097) or length (n = 1172), height-for-age z score (HAZ), weight-for-height z score (WHZ), and weight-for-age z score (WAZ) at 2 yr of age (n = 923). We found that maternal exposure to seasonal energy restriction in utero was associated with reduced offspring birth length (crude:−4.2 mm, P = 0.005; adjusted: −4.0 mm, P = 0.02). In contrast, paternal birth season predicted offspring HAZ at 24 mo (crude: −0.21, P = 0.005; adjusted: −0.22, P = 0.004) but had no discernible impact at birth. Our results indicate that periods of nutritional restriction in a parent’s fetal life can have intergenerational consequences in human populations. Fetal growth appears to be under matriline influence, and postnatal growth appears to be under patriline intergenerational influences.—Eriksen, K. G., Radford, E. J., Silver, M. J., Fulford, A. J. C., Wegmüller, R., Prentice, A. M. Influence of intergenerational in utero parental energy and nutrient restriction on offspring growth in rural Gambia.
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Affiliation(s)
- Kamilla G Eriksen
- Medical Research Council (MRC) Elsie Widdowson Laboratory, Cambridge, United Kingdom
| | - Elizabeth J Radford
- Cambridge University Hospitals National Health Service (NHS) Foundation Trust, University of Cambridge, Cambridge, United Kingdom.,Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Matt J Silver
- Medical Research Council (MRC) Unit, The Gambia, Banjul, Gambia.,Medical Research Council (MRC) International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Anthony J C Fulford
- Medical Research Council (MRC) Unit, The Gambia, Banjul, Gambia.,Medical Research Council (MRC) International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Rita Wegmüller
- Medical Research Council (MRC) Unit, The Gambia, Banjul, Gambia
| | - Andrew M Prentice
- Medical Research Council (MRC) Unit, The Gambia, Banjul, Gambia; .,Medical Research Council (MRC) International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
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82
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Paternal Risk Factors for Oral Clefts in Northern Africans, Southeast Asians, and Central Americans. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017. [PMID: 28629204 PMCID: PMC5486343 DOI: 10.3390/ijerph14060657] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
While several studies have investigated maternal exposures as risk factors for oral clefts, few have examined paternal factors. We conducted an international multi-centered case–control study to better understand paternal risk exposures for oral clefts (cases = 392 and controls = 234). Participants were recruited from local hospitals and oral cleft repair surgical missions in Vietnam, the Philippines, Honduras, and Morocco. Questionnaires were administered to fathers and mothers separately to elicit risk factor and family history data. Associations between paternal exposures and risk of clefts were assessed using logistic regression adjusting for potential confounders. A father’s personal/family history of clefts was associated with significantly increased risk (adjusted OR: 4.77; 95% CI: 2.41–9.45). No other significant associations were identified for other suspected risk factors, including education (none/primary school v. university adjusted OR: 1.29; 95% CI: 0.74–2.24), advanced paternal age (5-year adjusted OR: 0.98; 95% CI: 0.84–1.16), or pre-pregnancy tobacco use (adjusted OR: 0.96; 95% CI: 0.67–1.37). Although sample size was limited, significantly decreased risks were observed for fathers with selected occupations. Further research is needed to investigate paternal environmental exposures as cleft risk factors.
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83
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Transgenerational inheritance of neurobehavioral and physiological deficits from developmental exposure to benzo[a]pyrene in zebrafish. Toxicol Appl Pharmacol 2017; 329:148-157. [PMID: 28583304 DOI: 10.1016/j.taap.2017.05.033] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/25/2017] [Accepted: 05/26/2017] [Indexed: 12/11/2022]
Abstract
Benzo[a]pyrene (B[a]P) is a well-known genotoxic polycylic aromatic compound whose toxicity is dependent on signaling via the aryl hydrocarbon receptor (AHR). It is unclear to what extent detrimental effects of B[a]P exposures might impact future generations and whether transgenerational effects might be AHR-dependent. This study examined the effects of developmental B[a]P exposure on 3 generations of zebrafish. Zebrafish embryos were exposed from 6 to 120h post fertilization (hpf) to 5 and 10μM B[a]P and raised in chemical-free water until adulthood (F0). Two generations were raised from F0 fish to evaluate transgenerational inheritance. Morphological, physiological and neurobehavioral parameters were measured at two life stages. Juveniles of the F0 and F2 exhibited hyper locomotor activity, decreased heartbeat and mitochondrial function. B[a]P exposure during development resulted in decreased global DNA methylation levels and generally reduced expression of DNA methyltransferases in wild type zebrafish, with the latter effect largely reversed in an AHR2-null background. Adults from the F0 B[a]P exposed lineage displayed social anxiety-like behavior. Adults in the F2 transgeneration manifested gender-specific increased body mass index (BMI), increased oxygen consumption and hyper-avoidance behavior. Exposure to benzo[a]pyrene during development resulted in transgenerational inheritance of neurobehavioral and physiological deficiencies. Indirect evidence suggested the potential for an AHR2-dependent epigenetic route.
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84
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Canalization by Selection of de Novo Induced Mutations. Genetics 2017; 206:1995-2006. [PMID: 28576865 DOI: 10.1534/genetics.117.201079] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/25/2017] [Indexed: 11/18/2022] Open
Abstract
One of the most fascinating scientific problems, and a subject of intense debate, is that of the mechanisms of biological evolution. In this context, Waddington elaborated the concepts of "canalization and assimilation" to explain how an apparently somatic variant induced by stress could become heritable through the germline in Drosophila He resolved this seemingly Lamarckian phenomenon by positing the existence of cryptic mutations that can be expressed and selected under stress. To investigate the relevance of such mechanisms, we performed experiments following the Waddington procedure, then isolated and fixed three phenotypic variants along with another induced mutation that was not preceded by any phenocopy. All the fixed mutations we looked at were actually generated de novo by DNA deletions or transposon insertions, highlighting a novel mechanism for the assimilation process. Our study shows that heat-shock stress produces both phenotypic variants and germline mutations, and suggests an alternative explanation to that of Waddington for the apparent assimilation of an acquired character. The selection of the variants, under stress, for a number of generations allows for the coselection of newly induced corresponding germline mutations, making the phenotypic variants appear heritable.
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85
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Weisman NY, Fedorov VI. Dynamics of reaching imago stage by F1 animals after terahertz irradiation of parental Drosophila. Russ J Dev Biol 2017. [DOI: 10.1134/s1062360417020084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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86
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A guide to designing germline-dependent epigenetic inheritance experiments in mammals. Nat Methods 2017; 14:243-249. [DOI: 10.1038/nmeth.4181] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/08/2017] [Indexed: 12/13/2022]
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87
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Morales-Lara D, De-la-Peña C, Murillo-Rodríguez E. Dad's Snoring May Have Left Molecular Scars in Your DNA: the Emerging Role of Epigenetics in Sleep Disorders. Mol Neurobiol 2017; 55:2713-2724. [PMID: 28155201 DOI: 10.1007/s12035-017-0409-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 01/13/2017] [Indexed: 12/16/2022]
Abstract
The sleep-wake cycle is a biological phenomena under the orchestration of neurophysiological, neurochemical, neuroanatomical, and genetical mechanisms. Moreover, homeostatic and circadian processes participate in the regulation of sleep across the light-dark period. Further complexity of the understanding of the genesis of sleep engages disturbances which have been characterized and classified in a variety of sleep-wake cycle disorders. The most prominent sleep alterations include insomnia as well as excessive daytime sleepiness. On the other side, several human diseases have been linked with direct changes in DNA, such as chromatin configuration, genomic imprinting, DNA methylation, histone modifications (acetylation, methylation, ubiquitylation or sumoylation, etc.), and activating RNA molecules that are transcribed from DNA but not translated into proteins. Epigenetic theories primarily emphasize the interaction between the environment and gene expression. According to these approaches, the environment to which mammals are exposed has a significant role in determining the epigenetic modifications occurring in chromosomes that ultimately would influence not only development but also the descendants' physiology and behavior. Thus, what makes epigenetics intriguing is that, unlike genetic variation, modifications in DNA are altered directly by the environment and, in some cases, these epigenetic changes may be inherited by future generations. Thus, it is likely that epigenetic phenomena might contribute to the homeostatic and/or circadian control of sleep and, possibly, have an undescribed link with sleep disorders. An exciting new horizon of research is arising between sleep and epigenetics since it represents the relevance of the study of how the genome learns from its experiences and modulates behavior, including sleep.
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Affiliation(s)
- Daniela Morales-Lara
- Laboratorio de Neurociencias Moleculares e Integrativas, Escuela de Medicina, División Ciencias de la Salud, Universidad Anáhuac Mayab, Carretera Mérida-Progreso Km. 15.5, A.P. 96 Cordemex, C.P. 97310, Mérida, Yucatán, Mexico.,Grupo de Investigación en Envejecimiento, División Ciencias de la Salud, Universidad Anáhuac Mayab, Mérida, Yucatán, Mexico.,Intercontinental Neuroscience Research Group, Mérida, Yucatán, Mexico
| | - Clelia De-la-Peña
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, A.C, Mérida, Yucatán, Mexico
| | - Eric Murillo-Rodríguez
- Laboratorio de Neurociencias Moleculares e Integrativas, Escuela de Medicina, División Ciencias de la Salud, Universidad Anáhuac Mayab, Carretera Mérida-Progreso Km. 15.5, A.P. 96 Cordemex, C.P. 97310, Mérida, Yucatán, Mexico. .,Grupo de Investigación en Envejecimiento, División Ciencias de la Salud, Universidad Anáhuac Mayab, Mérida, Yucatán, Mexico. .,Intercontinental Neuroscience Research Group, Mérida, Yucatán, Mexico. .,Grupo de Investigación Desarrollos Tecnológicos para la Salud, División de Ingeniería y Ciencias Exactas, Universidad Anáhuac Mayab, Mérida, Yucatán, Mexico.
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88
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Tian S, Lin XH, Xiong YM, Liu ME, Yu TT, Lv M, Zhao W, Xu GF, Ding GL, Xu CM, Jin M, Feng C, Wu YT, Tan YJ, Gao Q, Zhang J, Li C, Ren J, Jin LY, Chen B, Zhu H, Zhang XY, Chen SC, Liu XM, Liu Y, Zhang JY, Wang L, Zhang P, Chen XJ, Jin L, Chen X, Meng YC, Wu DD, Lin H, Yang Q, Zhou CL, Li XZ, Wang YY, Xiang YQ, Liu ZW, Gao L, Chen LT, Pan HJ, Li R, Zhang FH, Xing LF, Zhu YM, Klausen C, Leung PCK, Li JX, Sun F, Sheng JZ, Huang HF. Prevalence of Prediabetes Risk in Offspring Born to Mothers with Hyperandrogenism. EBioMedicine 2017; 16:275-283. [PMID: 28111236 PMCID: PMC5474435 DOI: 10.1016/j.ebiom.2017.01.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/14/2016] [Accepted: 01/09/2017] [Indexed: 01/13/2023] Open
Abstract
Background Excessive androgen exposure during pregnancy has been suggested to induce diabetic phenotypes in offspring in animal models. The aim of this study was to investigate whether pregestational maternal hyperandrogenism in human influenced the glucose metabolism in offspring via epigenetic memory from mother's oocyte to child's somatic cells. Methods Of 1782 reproductive-aged women detected pregestational serum androgen, 1406 were pregnant between 2005 and 2010. Of 1198 women who delivered, 1116 eligible mothers (147 with hyperandrogenism and 969 normal) were recruited. 1216 children (156 children born to mothers with hyperandrogenism and 1060 born to normal mother) were followed up their glycometabolism in mean age of 5 years. Imprinting genes of oocyte from mothers and lymphocytes from children were examined. A pregestational hyperandrogenism rat model was also established. Findings Children born to women with hyperandrogenism showed increased serum fasting glucose and insulin levels, and were more prone to prediabetes (adjusted RR: 3.98 (95%CI 1.16–13.58)). Oocytes from women with hyperandrogenism showed increased insulin-like growth factor 2 (IGF2) expression. Lymphocytes from their children also showed increased IGF2 expression and decreased IGF2 methylation. Treatment of human oocytes with dihydrotestosterone upregulated IGF2 and downregulated DNMT3a levels. In rat, pregestational hyperandrogenism induced diabetic phenotypes and impaired insulin secretion in offspring. In consistent with the findings in human, hyperandrogenism also increased Igf2 expression and decreased DNMT3a in rat oocytes. Importantly, the same altered methylation signatures of Igf2 were identified in the offspring pancreatic islets. Interpretation Pregestational hyperandrogenism may predispose offspring to glucose metabolism disorder via epigenetic oocyte inheritance. Clinical trial registry no.: ChiCTR-OCC-14004537; www.chictr.org. Maternal hyperandrogenism may increase the risks of glucose metabolism disorder and prediabetes in their children. High androgen levels in women may directly increased IGF2 expression and decreased IGF2 methylation in oocytes Intergenerational inheritance of epigenetic alteration could be regarded important in determining development of diabetes.
Hyperandrogenemia can be observed in most patients with polycystic ovarian syndrome that is a common endocrine disorder in women of reproductive age, especially in subfertile women. We found that maternal hyperandrogenism may increase the risks of glucose metabolism disorder and prediabetes in their children. Also, Data from human and rat suggest that this glucose metabolism disorder may be mediated by DNA methylation modifications, and this kind of epigenetic modification may be transmitted from oocytes of mothers to somatic cells of offspring. Hence, intergenerational inheritance of epigenetic alteration should be regarded important in determining development of diabetes in the future.
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Affiliation(s)
- Shen Tian
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China; Department of Reproductive Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Xian-Hua Lin
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yi-Meng Xiong
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Miao-E Liu
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Tian-Tian Yu
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Min Lv
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Wei Zhao
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Gu-Feng Xu
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Guo-Lian Ding
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Chen-Ming Xu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Min Jin
- Department of Reproductive Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Chun Feng
- Department of Reproductive Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Yan-Ting Wu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Ya-Jing Tan
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Qian Gao
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China
| | - Jian Zhang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Cheng Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Jun Ren
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Lu-Yang Jin
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Bin Chen
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Hong Zhu
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Xue-Ying Zhang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Song-Chang Chen
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xin-Mei Liu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Ye Liu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Jun-Yu Zhang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Li Wang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Ping Zhang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xiao-Jun Chen
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Li Jin
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xi Chen
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yi-Cong Meng
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Dan-Dan Wu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Hui Lin
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Qian Yang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Cheng-Liang Zhou
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xin-Zhu Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yi-Yu Wang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yu-Qian Xiang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Zhi-Wei Liu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Ling Gao
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Lu-Ting Chen
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Hong-Jie Pan
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Rong Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Fang-Hong Zhang
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Lan-Feng Xing
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Yi-Min Zhu
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Christian Klausen
- Department of Obstetrics and Gynecology, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia V5Z 4H4, Canada
| | - Peter C K Leung
- Department of Obstetrics and Gynecology, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia V5Z 4H4, Canada
| | - Ju-Xue Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Fei Sun
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Jian-Zhong Sheng
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - He-Feng Huang
- The Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, 310006, China; The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China; Institute of Embryo-Fetal Original Adult Disease, Shanghai Key Laboratory for Reproductive Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.
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89
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Shojaei Saadi HA, Fournier É, Vigneault C, Blondin P, Bailey J, Robert C. Genome-wide analysis of sperm DNA methylation from monozygotic twin bulls. Reprod Fertil Dev 2017; 29:838-843. [DOI: 10.1071/rd15384] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 12/03/2015] [Indexed: 12/23/2022] Open
Abstract
Monozygotic (MZ) twins are of great interest to elucidate the contributions of pre- and postnatal environmental factors on epigenetics in the expression of complex traits and diseases. Progeny testing recently revealed that MZ twin bulls do not necessarily lead to identical genetic merit estimates (i.e. breeding values). Therefore, to explain differences in offspring productivity of MZ twin bulls despite their identical genetic backgrounds, we hypothesised that paternal sperm epigenomes vary between MZ twin bulls. In the present study, semen characteristics and global sperm DNA methylome were profiled for four pairs of MZ twin bulls. Some MZ twin pairs had divergent semen quality (sperm morphology, motility and viability). Comparative genome-wide DNA methylome surveys were performed using methyl-sensitive enrichment and microarray identification. Between 2% and 10% of all probes (400 000) were differentially methylated between MZ twin pairs. In addition, there were 580 loci differentially methylated across all pairs of MZ twins. Furthermore, enrichment analysis indicated a significant enrichment for fertility associated quantitative trait loci (P = 0.033). In conclusion, differences in the sperm epigenome may contribute to incongruous diverging performances of daughters sired by bulls that are MZ twins.
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90
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Prud'homme SM, Chaumot A, Cassar E, David JP, Reynaud S. Impact of micropollutants on the life-history traits of the mosquito Aedes aegypti: On the relevance of transgenerational studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:242-254. [PMID: 27667679 DOI: 10.1016/j.envpol.2016.09.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/16/2016] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
Hazard assessment of chemical contaminants often relies on short term or partial life-cycle ecotoxicological tests, while the impact of low dose throughout the entire life cycle of species across multiple generations has been neglected. This study aimed at identifying the individual and population-level consequences of chronic water contamination by environmental concentrations of three organic micropollutants, ibuprofen, bisphenol A and benzo[a]pyrene, on Aedes aegypti mosquito populations in experimental conditions. Life-history assays spanning the full life-cycle of exposed individuals and their progeny associated with population dynamics modelling evidenced life-history traits alterations in unexposed progenies of individuals chronically exposed to 1 μg/L ibuprofen or 0.6 μg/L benzo[a]pyrene. The progeny of individuals exposed to ibuprofen showed an accelerated development while the progeny of individuals exposed to benzo[a]pyrene showed a developmental acceleration associated with an increase in mortality rate during development. These life-history changes due to pollutants exposure resulted in relatively shallow increase of Ae. aegypti asymptotic population growth rate. Multigenerational exposure for six generations revealed an evolution of population response to ibuprofen and benzo[a]pyrene across generations, leading to a loss of previously identified transgenerational effects and to the emergence of a tolerance to the bioinsecticide Bacillus turingiensis israelensis (Bti). This study shed light on the short and long term impact of environmentally relevant doses of ibuprofen and benzo[a]pyrene on Ae. aegypti life-history traits and insecticide tolerance, raising unprecedented perspectives about the influence of surface water pollution on vector-control strategies. Overall, our approach highlights the importance of considering the entire life cycle of organisms, and the necessity to assess the transgenerational effects of pollutants in ecotoxicological studies for ecological risk assessment. Finally, this multi-generational study gives new insight about the influence of surface water pollution on microevolutionary processes.
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Affiliation(s)
- Sophie M Prud'homme
- CNRS Laboratoire d'Ecologie Alpine (LECA), UMR 5553, BP 53, 2233 rue de la Piscine, 38041 Grenoble Cedex 9, France; Université Grenoble Alpes, Grenoble, France.
| | - Arnaud Chaumot
- IRSTEA, UR MALY, Laboratoire d'écotoxicologie, centre de Lyon-Villeurbanne, F-69616 Villeurbanne, France.
| | - Eva Cassar
- CNRS Laboratoire d'Ecologie Alpine (LECA), UMR 5553, BP 53, 2233 rue de la Piscine, 38041 Grenoble Cedex 9, France; Université Grenoble Alpes, Grenoble, France.
| | - Jean-Philippe David
- CNRS Laboratoire d'Ecologie Alpine (LECA), UMR 5553, BP 53, 2233 rue de la Piscine, 38041 Grenoble Cedex 9, France; Université Grenoble Alpes, Grenoble, France.
| | - Stéphane Reynaud
- CNRS Laboratoire d'Ecologie Alpine (LECA), UMR 5553, BP 53, 2233 rue de la Piscine, 38041 Grenoble Cedex 9, France; Université Grenoble Alpes, Grenoble, France.
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91
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Benonisdottir S, Oddsson A, Helgason A, Kristjansson RP, Sveinbjornsson G, Oskarsdottir A, Thorleifsson G, Davidsson OB, Arnadottir GA, Sulem G, Jensson BO, Holm H, Alexandersson KF, Tryggvadottir L, Walters GB, Gudjonsson SA, Ward LD, Sigurdsson JK, Iordache PD, Frigge ML, Rafnar T, Kong A, Masson G, Helgason H, Thorsteinsdottir U, Gudbjartsson DF, Sulem P, Stefansson K. Epigenetic and genetic components of height regulation. Nat Commun 2016; 7:13490. [PMID: 27848971 PMCID: PMC5116096 DOI: 10.1038/ncomms13490] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 10/07/2016] [Indexed: 01/12/2023] Open
Abstract
Adult height is a highly heritable trait. Here we identified 31.6 million sequence variants by whole-genome sequencing of 8,453 Icelanders and tested them for association with adult height by imputing them into 88,835 Icelanders. Here we discovered 13 novel height associations by testing four different models including parent-of-origin (|β|=0.4-10.6 cm). The minor alleles of three parent-of-origin signals associate with less height only when inherited from the father and are located within imprinted regions (IGF2-H19 and DLK1-MEG3). We also examined the association of these sequence variants in a set of 12,645 Icelanders with birth length measurements. Two of the novel variants, (IGF2-H19 and TET1), show significant association with both adult height and birth length, indicating a role in early growth regulation. Among the parent-of-origin signals, we observed opposing parental effects raising questions about underlying mechanisms. These findings demonstrate that common variations affect human growth by parental imprinting.
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Affiliation(s)
| | | | - Agnar Helgason
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,Department of Anthropology, University of Iceland, 101 Reykjavik, Iceland
| | | | | | | | | | | | | | - Gerald Sulem
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland
| | | | - Hilma Holm
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland
| | | | - Laufey Tryggvadottir
- Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland.,Icelandic Cancer Registry, 105 Reykjavik, Iceland
| | | | | | - Lucas D Ward
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland
| | | | - Paul D Iordache
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,Reykjavik University, 101 Reykjavik, Iceland
| | | | | | - Augustine Kong
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,School of Engineering and Natural Sciences, University of Iceland, 107 Reykjavik, Iceland
| | - Gisli Masson
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland
| | - Hannes Helgason
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,School of Engineering and Natural Sciences, University of Iceland, 107 Reykjavik, Iceland
| | - Unnur Thorsteinsdottir
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
| | - Daniel F Gudbjartsson
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,School of Engineering and Natural Sciences, University of Iceland, 107 Reykjavik, Iceland
| | | | - Kari Stefansson
- deCODE Genetics/Amgen, Inc., 101 Reykjavik, Iceland.,Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
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92
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Dong H, Wang Y, Zou Z, Chen L, Shen C, Xu S, Zhang J, Zhao F, Ge S, Gao Q, Hu H, Song M, Wang W. Abnormal Methylation of Imprinted Genes and Cigarette Smoking. Reprod Sci 2016; 24:114-123. [DOI: 10.1177/1933719116650755] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Hao Dong
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Youxin Wang
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Zhikang Zou
- Department of Reproductive Medical Center, Air Force General Hospital, PLA, Beijing, China
| | - Limin Chen
- Department of Reproductive Medical Center, Air Force General Hospital, PLA, Beijing, China
| | - Chuanyun Shen
- Department of Reproductive Medical Center, Air Force General Hospital, PLA, Beijing, China
| | - Shaoqiang Xu
- Department of Reproductive Medical Center, Air Force General Hospital, PLA, Beijing, China
| | - Jie Zhang
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Feifei Zhao
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Siqi Ge
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Qing Gao
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Haixiang Hu
- Department of Reproductive Medical Center, Air Force General Hospital, PLA, Beijing, China
| | - Manshu Song
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Wei Wang
- School of Public Health, Capital Medical University, Beijing, China
- Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
- School of Medical Sciences, Edith Cowan University, Joondalup WA, Australia
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93
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Hao C, Gely-Pernot A, Kervarrec C, Boudjema M, Becker E, Khil P, Tevosian S, Jégou B, Smagulova F. Exposure to the widely used herbicide atrazine results in deregulation of global tissue-specific RNA transcription in the third generation and is associated with a global decrease of histone trimethylation in mice. Nucleic Acids Res 2016; 44:9784-9802. [PMID: 27655631 PMCID: PMC5175363 DOI: 10.1093/nar/gkw840] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 09/11/2016] [Accepted: 09/12/2016] [Indexed: 02/07/2023] Open
Abstract
The epigenetic events imposed during germline reprogramming and affected by harmful exposure can be inherited and transferred to subsequent generations via gametes inheritance. In this study, we examine the transgenerational effects promoted by widely used herbicide atrazine (ATZ). We exposed pregnant outbred CD1 female mice and the male progeny was crossed for three generations with untreated females. We demonstrate here that exposure to ATZ affects meiosis, spermiogenesis and reduces the spermatozoa number in the third generation (F3) male mice. We suggest that changes in testis cell types originate from modified transcriptional network in undifferentiated spermatogonia. Importantly, exposure to ATZ dramatically increases the number of transcripts with novel transcription initiation sites, spliced variants and alternative polyadenylation sites. We found the global decrease in H3K4me3 occupancy in the third generation males. The regions with altered H3K4me3 occupancy in F3 ATZ-derived males correspond to altered H3K4me3 occupancy of F1 generation and 74% of changed peaks in F3 generation are associated with enhancers. The regions with altered H3K4me3 occupancy are enriched in SP family and WT1 transcription factor binding sites. Our data suggest that the embryonic exposure to ATZ affects the development and the changes induced by ATZ are transferred up to three generations.
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Affiliation(s)
- Chunxiang Hao
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
| | - Aurore Gely-Pernot
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France.,EHESP, 2 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
| | - Christine Kervarrec
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
| | - Melissa Boudjema
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
| | - Emmanuelle Becker
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
| | - Pavel Khil
- Clinical Center, National Institute of Health, Bethesda, MD 20892, USA
| | - Sergei Tevosian
- University of Florida, Department of Physiological Sciences, Box 100144, 1333 Center Drive, 32610 Gainesville, FL, USA
| | - Bernard Jégou
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France.,EHESP, 2 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
| | - Fatima Smagulova
- Inserm U1085 IRSET, 9 Avenue du Professeur Léon-Bernard, 35000 Rennes, France
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94
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Dew-Budd K, Jarnigan J, Reed LK. Genetic and Sex-Specific Transgenerational Effects of a High Fat Diet in Drosophila melanogaster. PLoS One 2016; 11:e0160857. [PMID: 27518304 PMCID: PMC4982694 DOI: 10.1371/journal.pone.0160857] [Citation(s) in RCA: 25] [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: 02/26/2016] [Accepted: 07/26/2016] [Indexed: 01/27/2023] Open
Abstract
An organism's phenotype is the product of its environment and genotype, but an ancestor's environment can also be a contributing factor. The recent increase in caloric intake and decrease in physical activity of developed nations' populations is contributing to deteriorating health and making the study of the longer term impacts of a changing lifestyle a priority. The dietary habits of ancestors have been shown to affect phenotype in several organisms, including humans, mice, and the fruit fly. Whether the ancestral dietary effect is purely environmental or if there is a genetic interaction with the environment passed down for multiple generations, has not been determined previously. Here we used the fruit fly, Drosophila melanogaster, to investigate the genetic, sex-specific, and environmental effects of a high fat diet for three generations' on pupal body weights across ten genotypes. We also tested for genotype-specific transgenerational effects on metabolic pools and egg size across three genotypes. We showed that there were substantial differences in transgenerational responses to ancestral diet between genotypes and sexes through both first and second descendant generations. Additionally, there were differences in phenotypes between maternally and paternally inherited dietary effects. We also found a treated organism's reaction to a high fat diet was not a consistent predictor of its untreated descendants' phenotype. The implication of these results is that, given our interest in understanding and preventing metabolic diseases like obesity, we need to consider the contribution of ancestral environmental experiences. However, we need to be cautious when drawing population-level generalization from small studies because transgenerational effects are likely to exhibit substantial sex and genotype specificity.
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Affiliation(s)
- Kelly Dew-Budd
- Department of Biological Sciences, University of Alabama; Tuscaloosa, AL, United States of America
- School of Plant Sciences, University of Arizona; Tucson, AZ, United States of America
| | - Julie Jarnigan
- Department of Biological Sciences, University of Alabama; Tuscaloosa, AL, United States of America
| | - Laura K. Reed
- Department of Biological Sciences, University of Alabama; Tuscaloosa, AL, United States of America
- * E-mail:
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95
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Bunkar N, Pathak N, Lohiya NK, Mishra PK. Epigenetics: A key paradigm in reproductive health. Clin Exp Reprod Med 2016; 43:59-81. [PMID: 27358824 PMCID: PMC4925870 DOI: 10.5653/cerm.2016.43.2.59] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 02/06/2016] [Accepted: 03/16/2016] [Indexed: 12/17/2022] Open
Abstract
It is well established that there is a heritable element of susceptibility to chronic human ailments, yet there is compelling evidence that some components of such heritability are transmitted through non-genetic factors. Due to the complexity of reproductive processes, identifying the inheritance patterns of these factors is not easy. But little doubt exists that besides the genomic backbone, a range of epigenetic cues affect our genetic programme. The inter-generational transmission of epigenetic marks is believed to operate via four principal means that dramatically differ in their information content: DNA methylation, histone modifications, microRNAs and nucleosome positioning. These epigenetic signatures influence the cellular machinery through positive and negative feedback mechanisms either alone or interactively. Understanding how these mechanisms work to activate or deactivate parts of our genetic programme not only on a day-to-day basis but also over generations is an important area of reproductive health research.
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Affiliation(s)
- Neha Bunkar
- Translational Research Laboratory, School of Biological Sciences, Dr. Hari Singh Central University, Sagar, India
| | - Neelam Pathak
- Translational Research Laboratory, School of Biological Sciences, Dr. Hari Singh Central University, Sagar, India.; Reproductive Physiology Laboratory, Centre for Advanced Studies, University of Rajasthan, Jaipur, India
| | - Nirmal Kumar Lohiya
- Reproductive Physiology Laboratory, Centre for Advanced Studies, University of Rajasthan, Jaipur, India
| | - Pradyumna Kumar Mishra
- Translational Research Laboratory, School of Biological Sciences, Dr. Hari Singh Central University, Sagar, India.; Department of Molecular Biology, National Institute for Research in Environmental Health (ICMR), Bhopal, India
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96
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Mulder CL, Zheng Y, Jan SZ, Struijk RB, Repping S, Hamer G, van Pelt AMM. Spermatogonial stem cell autotransplantation and germline genomic editing: a future cure for spermatogenic failure and prevention of transmission of genomic diseases. Hum Reprod Update 2016; 22:561-73. [PMID: 27240817 PMCID: PMC5001497 DOI: 10.1093/humupd/dmw017] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 04/28/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Subfertility affects approximately 15% of all couples, and a severe male factor is identified in 17% of these couples. While the etiology of a severe male factor remains largely unknown, prior gonadotoxic treatment and genomic aberrations have been associated with this type of subfertility. Couples with a severe male factor can resort to ICSI, with either ejaculated spermatozoa (in case of oligozoospermia) or surgically retrieved testicular spermatozoa (in case of azoospermia) to generate their own biological children. Currently there is no direct treatment for azoospermia or oligozoospermia. Spermatogonial stem cell (SSC) autotransplantation (SSCT) is a promising novel clinical application currently under development to restore fertility in sterile childhood cancer survivors. Meanwhile, recent advances in genomic editing, especially the clustered regulatory interspaced short palindromic repeats-associated protein 9 (CRISPR-Cas9) system, are likely to enable genomic rectification of human SSCs in the near future. OBJECTIVE AND RATIONALE The objective of this review is to provide insights into the prospects of the potential clinical application of SSCT with or without genomic editing to cure spermatogenic failure and to prevent transmission of genetic diseases. SEARCH METHODS We performed a narrative review using the literature available on PubMed not restricted to any publishing year on topics of subfertility, fertility treatments, (molecular regulation of) spermatogenesis and SSCT, inherited (genetic) disorders, prenatal screening methods, genomic editing and germline editing. For germline editing, we focussed on the novel CRISPR-Cas9 system. We included papers written in English only. OUTCOMES Current techniques allow propagation of human SSCs in vitro, which is indispensable to successful transplantation. This technique is currently being developed in a preclinical setting for childhood cancer survivors who have stored a testis biopsy prior to cancer treatment. Similarly, SSCT could be used to restore fertility in sterile adult cancer survivors. In vitro propagation of SSCs might also be employed to enhance spermatogenesis in oligozoospermic men and in azoospermic men who still have functional SSCs albeit in insufficient numbers. The combination of SSCT with genomic editing techniques could potentially rectify defects in spermatogenesis caused by genomic mutations or, more broadly, prevent transmission of genomic diseases to the offspring. In spite of the promising prospects, SSCT and germline genomic editing are not yet clinically applicable and both techniques require optimization at various levels. WIDER IMPLICATIONS SSCT with or without genomic editing could potentially be used to restore fertility in cancer survivors to treat couples with a severe male factor and to prevent the paternal transmission of diseases. This will potentially allow these couples to have their own biological children. Technical development is progressing rapidly, and ethical reflection and societal debate on the use of SSCT with or without genomic editing is pressing.
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Affiliation(s)
- Callista L Mulder
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Yi Zheng
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Sabrina Z Jan
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Robert B Struijk
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Sjoerd Repping
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Geert Hamer
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Ans M M van Pelt
- Center for Reproductive Medicine, Amsterdam Research Institute Reproduction and Development, Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
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97
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Epigenetic Inheritance and Its Role in Evolutionary Biology: Re-Evaluation and New Perspectives. BIOLOGY 2016; 5:biology5020024. [PMID: 27231949 PMCID: PMC4929538 DOI: 10.3390/biology5020024] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/26/2016] [Accepted: 05/11/2016] [Indexed: 01/08/2023]
Abstract
Epigenetics increasingly occupies a pivotal position in our understanding of inheritance, natural selection and, perhaps, even evolution. A survey of the PubMed database, however, reveals that the great majority (>93%) of epigenetic papers have an intra-, rather than an inter-generational focus, primarily on mechanisms and disease. Approximately ~1% of epigenetic papers even mention the nexus of epigenetics, natural selection and evolution. Yet, when environments are dynamic (e.g., climate change effects), there may be an “epigenetic advantage” to phenotypic switching by epigenetic inheritance, rather than by gene mutation. An epigenetically-inherited trait can arise simultaneously in many individuals, as opposed to a single individual with a gene mutation. Moreover, a transient epigenetically-modified phenotype can be quickly “sunsetted”, with individuals reverting to the original phenotype. Thus, epigenetic phenotype switching is dynamic and temporary and can help bridge periods of environmental stress. Epigenetic inheritance likely contributes to evolution both directly and indirectly. While there is as yet incomplete evidence of direct permanent incorporation of a complex epigenetic phenotype into the genome, doubtlessly, the presence of epigenetic markers and the phenotypes they create (which may sort quite separately from the genotype within a population) will influence natural selection and, so, drive the collective genotype of a population.
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98
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Differential Expression of Long Noncoding RNAs between Sperm Samples from Diabetic and Non-Diabetic Mice. PLoS One 2016; 11:e0154028. [PMID: 27119337 PMCID: PMC4847876 DOI: 10.1371/journal.pone.0154028] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 04/07/2016] [Indexed: 11/28/2022] Open
Abstract
To investigate the potential core reproduction-related genes associated with the development of diabetes, the expression profiles of long noncoding RNA (lncRNA) and messenger RNA (mRNA) in the sperm of diabetic mice were studied. We used microarray analysis to detect the expression of lncRNAs and coding transcripts in six diabetic and six normal sperm samples, and differentially expressed lncRNAs and mRNAs were identified through Volcano Plot filtering. The function of differentially expressed mRNA was determined by pathway and gene ontology (GO) analysis, and the function of lncRNAs was studied by subgroup analysis and their physical or functional relationships with corresponding mRNAs. A total of 7721 lncRNAs and 6097 mRNAs were found to be differentially expressed between the diabetic and normal sperm groups. The diabetic sperm exhibited aberrant expression profiles for lncRNAs and mRNAs, and GO and pathway analyses showed that the functions of differentially expressed mRNAs were closely related with many processes involved in the development of diabetes. Furthermore, potential core genes that might play important roles in the pathogenesis of diabetes-related low fertility were revealed by lncRNA- and mRNA-interaction studies, as well as coding-noncoding gene co-expression analysis based on the microarray expression profiles.
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99
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Marchiani S, Tamburrino L, Muratori M, Baldi E. New insights in sperm biology: How benchside results in the search for molecular markers may help understand male infertility. World J Transl Med 2016; 5:26-36. [DOI: 10.5528/wjtm.v5.i1.26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/22/2016] [Accepted: 02/17/2016] [Indexed: 02/06/2023] Open
Abstract
The male factor is responsible for about 40% of couple infertility cases and such percentage is expected to increase in the future because of several likely factors including the presence of endocrine disruptors in the environment, changes in lifestyle habits and advanced couple aging. How such factors affect male fertility status, however, should be clarified. Most studies on male fertility status have focused on parameters analyzed using a spermiogram test, the primary diagnostic tool in the routine assessment of male infertility, which is, however, poorly predictive of both natural and medically assisted conception. For these reasons it is mandatory for the scientific community to identify new molecular markers to incorporate into the existing diagnostic tests of male fertility. Ideally, such markers would be detected in mature spermatozoa to avoid invasive procedures for the patient. This review summarizes the recent advancements in benchside approaches that appear most promising for the development of new diagnostic sperm fertility tests, or identification of therapeutic targets, and, illustrates their advantages and limits.
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100
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Affiliation(s)
- Melvin M. Bonilla
- Department of Biology and Program in Ecology, Evolution and Conservation BiologyUniversity of NevadaRenoNVUSA
- Department of Environmental Health, T.H. Chan School of Public HealthHarvard UniversityBostonMAUSA
| | - Jeanne A. Zeh
- Department of Biology and Program in Ecology, Evolution and Conservation BiologyUniversity of NevadaRenoNVUSA
| | - David W. Zeh
- Department of Biology and Program in Ecology, Evolution and Conservation BiologyUniversity of NevadaRenoNVUSA
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