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Liao H, Lu D, Reisinger SN, Kleeman EA, van de Garde N, Gubert C, Hannan AJ. Mimicking bacterial infection in male mice changes sperm small RNA profiles and multigenerationally alters offspring behavior and physiology. Brain Behav Immun 2024; 119:520-538. [PMID: 38636562 DOI: 10.1016/j.bbi.2024.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/22/2024] [Accepted: 04/16/2024] [Indexed: 04/20/2024] Open
Abstract
Paternal pre-conceptual exposures, including stress, diet, substance abuse, parasite infection, and viral immune activation via Poly I:C, have been reported to influence the brains and behavior of offspring through sperm epigenetic changes. However, the effects of paternal (F0) pre-conceptual exposure to bacterial-induced immune activation on the behavior and physiology of F1 and F2 generations remain unexplored. We examined this using C57BL/6J mice. Eight-week-old males (F0) received a single intraperitoneal injection of the bacterial mimetic lipopolysaccharide (LPS: 5 mg/kg) or 0.9 % saline (vehicle control) before mating with naïve females at four weeks post-injection. Comprehensive behavioral assessments were conducted to investigate anxiety, social behaviors, depressive-like behaviors and cognition in both the F1 and F2 generations within the age range of 8 to 14 weeks. Results demonstrated that only female offspring of LPS-exposed fathers exhibited reduced anxiety levels in the light/dark box, large open field, and novelty-suppressed feeding test. These F1 female offspring also exhibited heightened sociability in the 3-chambered social interaction test and a reduced preference for saccharin in the saccharin preference test. Additionally, the F1 male offspring of LPS-challenged males demonstrated an increased total distance traveled in the light/dark box and a longer distance covered in the light zone. They also exhibited diminished preference for social novelty in the 3-chambered social interaction test and an elevated novel arm preference index in the Y-maze. In the F2 generation, male descendants of LPS-treated fathers showed reduced latency to feed in the novelty-suppressed feeding test. Additionally, the F2 generation of LPS-challenged fathers, but not the F1 generation, displayed enhanced immune response in both sexes after an acute LPS immune challenge (5 mg/kg). Analysis of sperm small noncoding RNA profiles from LPS-treated F0 mice revealed significant changes at 4 weeks after administration of LPS. These changes included three microRNAs, eight PIWI-interacting RNAs, and two transfer RNAs, exhibiting significant upregulation (mmu-miR-146a-5p, mmu-piR-27082 and mmu-piR-29102) or downregulation (mmu-miR-5110, mmu-miR-467e-3p, mmu-piR-22583, mmu-piR-23548, mmu-piR-36341, mmu-piR-50293, mmu-piR-16583, mmu-piR-36507, Mus_musculus_tRNA-Ile-AAT-2-1 and Mus_musculus_tRNA-Tyr-GTA-1-1). Additionally, we detected 52 upregulated small noncoding RNAs (including 9 miRNAs, 41 piRNAs, and 2 tRNAs) and 7 downregulated small noncoding RNAs (3 miRNAs, 3 piRNAs, and 1 tRNA) in the sperm of F1 offspring from LPS-treated males. These findings provide compelling evidence for the involvement of epigenetic mechanisms in the modulation of brain function and immunity, and associated behavioral and immunological traits, across generations, in response to bacterial infection.
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Affiliation(s)
- Huan Liao
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia.
| | - Da Lu
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Sonali N Reisinger
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Elizabeth A Kleeman
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Nicholas van de Garde
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Carolina Gubert
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Anthony J Hannan
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia; Department of Anatomy and Physiology, University of Melbourne, Melbourne, Victoria, Australia.
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Chen RJ, Nabila A, Gal Toth J, Stuhlmann H, Toth M. The chemokine XCL1 functions as a pregnancy hormone to program offspring innate anxiety. Brain Behav Immun 2024; 118:178-189. [PMID: 38428650 PMCID: PMC11044916 DOI: 10.1016/j.bbi.2024.02.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 02/21/2024] [Accepted: 02/27/2024] [Indexed: 03/03/2024] Open
Abstract
Elevated levels of cytokines in maternal circulation increase the offspring's risk for neuropsychiatric disease. Because of their low homeostatic levels, circulating maternal cytokines during normal pregnancies have not been considered to play a role in fetal brain development and offspring behavior. Here we report that the T/NK cell chemotactic cytokine XCL1, a local paracrine immune signal, can function as a pregnancy hormone and is required for the proper development of placenta and male offspring approach-avoidance behavior. We found that circulating XCL1 levels were at a low pregestational level throughout pregnancy except for a midgestational rise and fall. Blunted elevation in maternal plasma XCL1 in dams with a genetic 5HT1A receptor deficit or following neutralization by anti-XCL1 antibodies increased the expression of tissue damage associated factors in WT fetal placenta and led to increased innate anxiety and stress reactivity in the WT male offspring. Therefore, chemokines like XCL1 may act as pregnancy hormones to regulate placenta development and offspring emotional behavior.
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Affiliation(s)
- Rosa J Chen
- Department of Pharmacology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Anika Nabila
- Department of Pharmacology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Judit Gal Toth
- Department of Pharmacology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Heidi Stuhlmann
- Cell and Developmental Biology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Miklos Toth
- Department of Pharmacology, Weill Cornell Medicine, New York, NY 10065, USA.
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Graham G, Goren N, Sounderajah V, DeSalvo K. Information is a determinant of health. Nat Med 2024; 30:927-928. [PMID: 38351186 DOI: 10.1038/s41591-023-02792-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Affiliation(s)
| | - Nira Goren
- YouTube, San Bruno, CA, USA
- Google, Mountain View, CA, USA
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Mattera JA, Campagna AX, Goodman SH, Gartstein MA, Hancock GR, Stowe ZN, Newport DJ, Knight BT. Associations between mothers' and fathers' depression and anxiety prior to birth and infant temperament trajectories over the first year of life: Evidence from diagnoses and symptom severity. J Affect Disord 2023; 343:31-41. [PMID: 37741466 PMCID: PMC10672733 DOI: 10.1016/j.jad.2023.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 09/11/2023] [Accepted: 09/17/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND Developmental shifts in infant temperament predict distal outcomes including emerging symptoms of psychopathology in childhood. Thus, it is critical to gain insight into factors that shape these developmental shifts. Although parental depression and anxiety represent strong predictors of infant temperament in cross-sectional research, few studies have examined how these factors influence temperament trajectories across infancy. METHODS We used latent growth curve modeling to examine whether mothers' and fathers' anxiety and depression, measured in two ways - as diagnostic status and symptom severity - serve as unique predictors of developmental shifts in infant temperament from 3 to 12 months. Participants included mothers (N = 234) and a subset of fathers (N = 142). Prior to or during pregnancy, both parents were assessed for lifetime diagnoses of depression and anxiety as well as current severity levels. Mothers rated their infants' temperament at 3, 6, and 12 months of age. RESULTS Mothers' depression and anxiety primarily predicted initial levels of temperament at 3 months. Controlling for mothers' symptoms, fathers' depression and anxiety largely related to temperament trajectories across infancy. Lifetime diagnoses and symptom severities were associated with distinct patterns. LIMITATIONS Infant temperament was assessed using a parent-report measure. Including an observational measure would provide a more comprehensive picture of the infants' functioning. CONCLUSIONS These results indicate that mothers' and fathers' mental health are uniquely associated with infant temperament development when measured using diagnostic status and/or symptom severity. Future studies should examine whether these temperament trajectories mediate intergenerational transmission of risk for depression and anxiety.
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Affiliation(s)
| | | | | | - Maria A Gartstein
- Department of Psychology, Washington State University, Pullman, WA, USA
| | - Gregory R Hancock
- Department of Human Development and Quantitative Methodology, University of Maryland, College Park, MD, USA
| | - Zachary N Stowe
- Department of Psychiatry and Behavioral Sciences, University of Wisconsin at Madison, Madison, WI, USA
| | - D Jeffrey Newport
- Departments of Psychiatry & Behavioral Sciences and Women's Health, University of Texas at Austin Dell Medical School, Austin, TX, USA
| | - Bettina T Knight
- Department of Psychiatry, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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Cheng Z, Su J, Zhang K, Jiang H, Li B. Epigenetic Mechanism of Early Life Stress-Induced Depression: Focus on the Neurotransmitter Systems. Front Cell Dev Biol 2022; 10:929732. [PMID: 35865627 PMCID: PMC9294154 DOI: 10.3389/fcell.2022.929732] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Depression has an alarmingly high prevalence worldwide. A growing body of evidence indicates that environmental factors significantly affect the neural development and function of the central nervous system and then induce psychiatric disorders. Early life stress (ELS) affects brain development and has been identified as a major cause of depression. It could promote susceptibility to stress in adulthood. Recent studies have found that ELS induces epigenetic changes that subsequently affect transcriptional rates of differentially expressed genes. The epigenetic modifications involved in ELS include histone modifications, DNA methylation, and non-coding RNA. Understanding of these genetic modifications may identify mechanisms that may lead to new interventions for the treatment of depression. Many reports indicate that different types of ELS induce epigenetic modifications of genes involved in the neurotransmitter systems, such as the dopaminergic system, the serotonergic system, the gamma-aminobutyric acid (GABA)-ergic system, and the glutamatergic system, which further regulate gene expression and ultimately induce depression-like behaviors. In this article, we review the effects of epigenetic modifications on the neurotransmitter systems in depression-like outcomes produced by different types of ELS in recent years, aiming to provide new therapeutic targets for patients who suffer from depression.
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Affiliation(s)
- Ziqian Cheng
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, China
- Engineering Lab on Screening of Antidepressant Drugs, Jilin Province Development and Reform Commission, Changchun, China
| | - Jingyun Su
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, China
- Engineering Lab on Screening of Antidepressant Drugs, Jilin Province Development and Reform Commission, Changchun, China
| | - Kai Zhang
- Central Laboratory, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Huiyi Jiang
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, China
- *Correspondence: Huiyi Jiang, ; Bingjin Li,
| | - Bingjin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, China
- Engineering Lab on Screening of Antidepressant Drugs, Jilin Province Development and Reform Commission, Changchun, China
- *Correspondence: Huiyi Jiang, ; Bingjin Li,
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Critical windows into a changing world: taking a life course and cohort view of Alzheimer's disease and related dementias risk. Int Psychogeriatr 2022; 34:311-313. [PMID: 35538871 DOI: 10.1017/s1041610221002751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Anastasiadi D, Venney CJ, Bernatchez L, Wellenreuther M. Epigenetic inheritance and reproductive mode in plants and animals. Trends Ecol Evol 2021; 36:1124-1140. [PMID: 34489118 DOI: 10.1016/j.tree.2021.08.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/05/2021] [Accepted: 08/09/2021] [Indexed: 12/17/2022]
Abstract
Epigenetic inheritance is another piece of the puzzle of nongenetic inheritance, although the prevalence, sources, persistence, and phenotypic consequences of heritable epigenetic marks across taxa remain unclear. We systematically reviewed over 500 studies from the past 5 years to identify trends in the frequency of epigenetic inheritance due to differences in reproductive mode and germline development. Genetic, intrinsic (e.g., disease), and extrinsic (e.g., environmental) factors were identified as sources of epigenetic inheritance, with impacts on phenotype and adaptation depending on environmental predictability. Our review shows that multigenerational persistence of epigenomic patterns is common in both plants and animals, but also highlights many knowledge gaps that remain to be filled. We provide a framework to guide future studies towards understanding the generational persistence and eco-evolutionary significance of epigenomic patterns.
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Affiliation(s)
- Dafni Anastasiadi
- The New Zealand Institute for Plant and Food Research Ltd, Nelson Research Centre, 293 Akersten St, Nelson 7010, New Zealand
| | - Clare J Venney
- Institut de Biologie Intégrative des Systèmes (IBIS), Département de Biologie, Université Laval, 1030 Avenue de la Médecine, G1V 0A6, Québec, QC, Canada
| | - Louis Bernatchez
- Institut de Biologie Intégrative des Systèmes (IBIS), Département de Biologie, Université Laval, 1030 Avenue de la Médecine, G1V 0A6, Québec, QC, Canada
| | - Maren Wellenreuther
- The New Zealand Institute for Plant and Food Research Ltd, Nelson Research Centre, 293 Akersten St, Nelson 7010, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland 1010, New Zealand.
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UPF2 leads to degradation of dendritically targeted mRNAs to regulate synaptic plasticity and cognitive function. Mol Psychiatry 2020; 25:3360-3379. [PMID: 31636381 PMCID: PMC7566522 DOI: 10.1038/s41380-019-0547-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 08/13/2019] [Accepted: 08/19/2019] [Indexed: 12/21/2022]
Abstract
Synaptic plasticity requires a tight control of mRNA levels in dendrites. RNA translation and degradation pathways have been recently linked to neurodevelopmental and neuropsychiatric diseases, suggesting a role for RNA regulation in synaptic plasticity and cognition. While the local translation of specific mRNAs has been implicated in synaptic plasticity, the tightly controlled mechanisms that regulate local quantity of specific mRNAs remain poorly understood. Despite being the only RNA regulatory pathway that is associated with multiple mental illnesses, the nonsense-mediated mRNA decay (NMD) pathway presents an unexplored regulatory mechanism for synaptic function and plasticity. Here, we show that neuron-specific disruption of UPF2, an NMD component, in adulthood attenuates learning, memory, spine density, synaptic plasticity (L-LTP), and potentiates perseverative/repetitive behavior in mice. We report that the NMD pathway operates within dendrites to regulate Glutamate Receptor 1 (GLUR1) surface levels. Specifically, UPF2 modulates the internalization of GLUR1 and promotes its local synthesis in dendrites. We identified neuronal Prkag3 mRNA as a mechanistic substrate for NMD that contributes to the UPF2-mediated regulation of GLUR1 by limiting total GLUR1 levels. These data establish that UPF2 regulates synaptic plasticity, cognition, and local protein synthesis in dendrites, providing fundamental insight into the neuron-specific function of NMD within the brain.
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Garcia-Dominguez X, Vicente JS, Viudes-de-Castro MP, Marco-Jiménez F. Long-Term Effects Following Fresh/Vitrified Embryo Transfer Are Transmitted by Paternal Germline in a Large Size Rabbit Cohort. Animals (Basel) 2020; 10:ani10081272. [PMID: 32722445 PMCID: PMC7460406 DOI: 10.3390/ani10081272] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/15/2020] [Accepted: 07/24/2020] [Indexed: 01/26/2023] Open
Abstract
The concept of developmental programming suggests that the early life environment influences offspring phenotype in later life, whose effects may also be manifested in further generations. Valuable pieces of evidence come from the fields applying assisted reproductive technologies (ARTs), which deprive embryos of their optimal maternal environment and were thus associated with subsequent developmental deviations. Recently, we demonstrated that the in vitro manipulations during a vitrified embryo transfer procedure incurs a cumulative and transgenerational decline in the growth performance of the resulting offspring. Here, we provide a longitudinal study to investigate whether previous developmental deviations could be indistinctly paternally or maternally transmitted using crossbred mattings. Our findings revealed that early embryo manipulations through fresh and vitrified embryo transfer incurred paternally transmissible effects over the growth pattern and adult body weight, which seemed not inheritable via the female germline. Similar inheritable effects were observed after fresh and vitrified embryo transfer, suggesting that disturbing optimal embryo development through in vitro manipulations was the principal trigger of transmissible effects, rather than embryo cryopreservation per se.
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Affiliation(s)
- Ximo Garcia-Dominguez
- Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022 Valencia, Spain; (X.G.-D.); (J.S.V.)
| | - José Salvador Vicente
- Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022 Valencia, Spain; (X.G.-D.); (J.S.V.)
| | - María P. Viudes-de-Castro
- Centro de Investigación y Tecnología Animal, Instituto Valenciano de Investigaciones Agrarias, 12100 Segorbe, Spain;
| | - Francisco Marco-Jiménez
- Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022 Valencia, Spain; (X.G.-D.); (J.S.V.)
- Correspondence:
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Spry E, Moreno-Betancur M, Becker D, Romaniuk H, Carlin JB, Molyneaux E, Howard LM, Ryan J, Letcher P, McIntosh J, Macdonald JA, Greenwood CJ, Thomson KC, McAnally H, Hancox R, Hutchinson DM, Youssef GJ, Olsson CA, Patton GC. Maternal mental health and infant emotional reactivity: a 20-year two-cohort study of preconception and perinatal exposures. Psychol Med 2020; 50:827-837. [PMID: 30968786 DOI: 10.1017/s0033291719000709] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Maternal mental health during pregnancy and postpartum predicts later emotional and behavioural problems in children. Even though most perinatal mental health problems begin before pregnancy, the consequences of preconception maternal mental health for children's early emotional development have not been prospectively studied. METHODS We used data from two prospective Australian intergenerational cohorts, with 756 women assessed repeatedly for mental health problems before pregnancy between age 13 and 29 years, and during pregnancy and at 1 year postpartum for 1231 subsequent pregnancies. Offspring infant emotional reactivity, an early indicator of differential sensitivity denoting increased risk of emotional problems under adversity, was assessed at 1 year postpartum. RESULTS Thirty-seven percent of infants born to mothers with persistent preconception mental health problems were categorised as high in emotional reactivity, compared to 23% born to mothers without preconception history (adjusted OR 2.1, 95% CI 1.4-3.1). Ante- and postnatal maternal depressive symptoms were similarly associated with infant emotional reactivity, but these perinatal associations reduced somewhat after adjustment for prior exposure. Causal mediation analysis further showed that 88% of the preconception risk was a direct effect, not mediated by perinatal exposure. CONCLUSIONS Maternal preconception mental health problems predict infant emotional reactivity, independently of maternal perinatal mental health; while associations between perinatal depressive symptoms and infant reactivity are partially explained by prior exposure. Findings suggest that processes shaping early vulnerability for later mental disorders arise well before conception. There is an emerging case for expanding developmental theories and trialling preventive interventions in the years before pregnancy.
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Affiliation(s)
- Elizabeth Spry
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
| | - Margarita Moreno-Betancur
- Murdoch Children's Research Institute, Clinical Epidemiology & Biostatistics Unit; Melbourne, Australia
- The University of Melbourne, Melbourne School of Population and Global Health, Melbourne, Australia
| | - Denise Becker
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
| | - Helena Romaniuk
- Murdoch Children's Research Institute, Clinical Epidemiology & Biostatistics Unit; Melbourne, Australia
- Deakin University Burwood, Biostatistics Unit, Faculty of Health, Melbourne, Australia
| | - John B Carlin
- Murdoch Children's Research Institute, Clinical Epidemiology & Biostatistics Unit; Melbourne, Australia
- The University of Melbourne, Melbourne School of Population and Global Health, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
| | - Emma Molyneaux
- Section of Women's Mental Health, Health Service and Population Research Department, Institute of Psychiatry, Psychology & Neuroscience; King's College London, UK & South London and Maudsley NHS Foundation Trust, UK
| | - Louise M Howard
- Section of Women's Mental Health, Health Service and Population Research Department, Institute of Psychiatry, Psychology & Neuroscience; King's College London, UK & South London and Maudsley NHS Foundation Trust, UK
| | - Joanne Ryan
- Monash University, School of Public Health and Preventive Medicine, Melbourne, Australia
| | - Primrose Letcher
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
| | - Jennifer McIntosh
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
| | - Jacqui A Macdonald
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
| | - Christopher J Greenwood
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
| | - Kimberley C Thomson
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
| | - Helena McAnally
- Department of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand
| | - Robert Hancox
- Department of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand
| | - Delyse M Hutchinson
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
- National Drug and Alcohol Research Centre, Faculty of Medicine, University of New South Wales, Australia
| | - George J Youssef
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
| | - Craig A Olsson
- Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Australia
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
| | - George C Patton
- Murdoch Children's Research Institute, Centre for Adolescent Health, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Victoria, Australia
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Aoued HS, Sannigrahi S, Hunter SC, Doshi N, Sathi ZS, Chan AWS, Walum H, Dias BG. Proximate causes and consequences of intergenerational influences of salient sensory experience. GENES BRAIN AND BEHAVIOR 2020; 19:e12638. [PMID: 31943801 DOI: 10.1111/gbb.12638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 01/06/2020] [Accepted: 01/06/2020] [Indexed: 12/20/2022]
Abstract
Salient sensory environments experienced by a parental generation can exert intergenerational influences on offspring. While these data provide an exciting new perspective on biological inheritance, questions remain about causes and consequences of intergenerational influences of salient sensory experience. We previously showed that exposing male mice to a salient olfactory experience, like olfactory fear conditioning, resulted in offspring demonstrating a sensitivity to the odor used to condition the paternal generation and possessing enhanced neuroanatomical representation for that odor. In this study, we first injected RNA extracted from sperm of male mice that underwent olfactory fear conditioning into naïve single-cell zygotes and found that adults that developed from these embryos had increased sensitivity and enhanced neuroanatomical representation for the odor (Odor A) with which the paternal male had been conditioned. Next, we found that female, but not male offspring sired by males conditioned with Odor A show enhanced consolidation of a weak single-trial Odor A + shock fear conditioning protocol. Our data provide evidence that RNA found in the paternal germline after exposure to salient sensory experiences can contribute to intergenerational influences of such experiences, and that such intergenerational influences confer an element of adaptation to the offspring. In so doing, our study of intergenerational influences of parental sensory experience adds to existing literature on intergenerational influences of parental exposures to stress and dietary manipulations and suggests that some causes (sperm RNA) and consequences (behavioral flexibility) of intergenerational influences of parental experiences may be conserved across a variety of parental experiences.
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Affiliation(s)
- Hadj S Aoued
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Atlanta, Georgia
| | - Soma Sannigrahi
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Atlanta, Georgia
| | - Sarah C Hunter
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Atlanta, Georgia
| | - Nandini Doshi
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Atlanta, Georgia
| | - Zakia S Sathi
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Atlanta, Georgia
| | - Anthony W S Chan
- Division of Neuropharmacology and Neurologic Diseases, Yerkes National Primate Research Center, Atlanta, Georgia.,Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia
| | - Hasse Walum
- Division of Autism and Related Disabilities, Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia.,Silvio O. Conte Center for Oxytocin and Social Cognition, Center for Translational Social Neuroscience, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia
| | - Brian G Dias
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Atlanta, Georgia.,Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA
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12
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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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Perera BP, Faulk C, Svoboda LK, Goodrich JM, Dolinoy DC. The role of environmental exposures and the epigenome in health and disease. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:176-192. [PMID: 31177562 PMCID: PMC7252203 DOI: 10.1002/em.22311] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/29/2019] [Accepted: 06/03/2019] [Indexed: 05/02/2023]
Abstract
The genetic material of every organism exists within the context of regulatory networks that govern gene expression, collectively called the epigenome. Epigenetics has taken center stage in the study of diseases such as cancer and diabetes, but its integration into the field of environmental health is still emerging. As the Environmental Mutagenesis and Genomics Society (EMGS) celebrates its 50th Anniversary this year, we have come together to review and summarize the seminal advances in the field of environmental epigenomics. Specifically, we focus on the role epigenetics may play in multigenerational and transgenerational transmission of environmentally induced health effects. We also summarize state of the art techniques for evaluating the epigenome, environmental epigenetic analysis, and the emerging field of epigenome editing. Finally, we evaluate transposon epigenetics as they relate to environmental exposures and explore the role of noncoding RNA as biomarkers of environmental exposures. Although the field has advanced over the past several decades, including being recognized by EMGS with its own Special Interest Group, recently renamed Epigenomics, we are excited about the opportunities for environmental epigenetic science in the next 50 years. Environ. Mol. Mutagen. 61:176-192, 2020. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Bambarendage P.U. Perera
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
| | - Christopher Faulk
- Department of Animal Sciences, University of Minnesota, St. Paul, Minnesota
| | - Laurie K. Svoboda
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
| | - Jaclyn M. Goodrich
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
| | - Dana C. Dolinoy
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
- Correspondence to: Dana C. Dolinoy, Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan.
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Aoued HS, Sannigrahi S, Doshi N, Morrison FG, Linsenbaum H, Hunter SC, Walum H, Baman J, Yao B, Jin P, Ressler KJ, Dias BG. Reversing Behavioral, Neuroanatomical, and Germline Influences of Intergenerational Stress. Biol Psychiatry 2019; 85:248-256. [PMID: 30292395 PMCID: PMC6326876 DOI: 10.1016/j.biopsych.2018.07.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 07/23/2018] [Accepted: 07/23/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Stressors affect populations exposed to them as well as offspring. Strategies preventing the intergenerational propagation of effects of stress would benefit public health. Olfactory cue-based fear conditioning provides a framework to address this issue. METHODS We 1) exposed adult male mice to an odor, acetophenone (Ace) or Lyral (parental generation [F0]-Exposed), 2) trained mice to associate these odors with mild foot shocks (F0-Trained), and 3) trained mice to associate these odors with mild foot shocks and then extinguished their fear toward these odors with odor-only presentations (F0-Extinguished). We then examined sensitivity of future generation (F1) offspring to these odors, expression of M71 odorant (Ace-responsive) and MOR23 odorant (Lyral-responsive) receptor-expressing cell populations in F1 offspring, and DNA methylation at genes encoding the Ace- (Olfr151, Olfr160) and Lyral- (Olfr16) responsive receptors in F0 sperm. RESULTS Extinguishing fear toward Ace or Lyral of F0 male mice (F0-Extinguished) that had been fear conditioned with Ace or Lyral, respectively, results in F1-Extinguished offspring that do not demonstrate behavioral sensitivity to Ace or Lyral, respectively, and do not have enhanced representation for M71 or MOR23 odorant receptors in the olfactory system, as is observed in F1-Trained-Ace or F1-Trained-Lyral cohorts, respectively. The promoters of genes encoding Olfr151 and Olfr160 receptors are less methylated in F0-Trained-Ace sperm compared with F0-Exposed-Ace sperm. The Olfr16 promoter is less methylated in F0-Trained-Lyral sperm compared with F0-Exposed-Lyral sperm, and F0-Extinguished-Lyral sperm have methylation levels comparable to F0-Exposed-Lyral sperm. CONCLUSIONS Our study demonstrates the potential of using extinction-based behavioral strategies to reverse influences of parental stress in offspring and in the parental germline.
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Affiliation(s)
- Hadj S. Aoued
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Soma Sannigrahi
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Nandini Doshi
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Filomene G. Morrison
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia, McLean Hospital, Harvard Medical School, Belmont, Massachusetts
| | - Hannah Linsenbaum
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Sarah C. Hunter
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Hasse Walum
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Justin Baman
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia
| | - Bing Yao
- Yerkes National Primate Research Center, Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia
| | - Peng Jin
- Yerkes National Primate Research Center, Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia
| | - Kerry J. Ressler
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia, McLean Hospital, Harvard Medical School, Belmont, Massachusetts
| | - Brian G. Dias
- Division of Behavioral Neuroscience and Psychiatric Disorders, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia,Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia
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Stenz L, Schechter DS, Serpa SR, Paoloni-Giacobino A. Intergenerational Transmission of DNA Methylation Signatures Associated with Early Life Stress. Curr Genomics 2018; 19:665-675. [PMID: 30532646 PMCID: PMC6225454 DOI: 10.2174/1389202919666171229145656] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/25/2017] [Accepted: 12/17/2017] [Indexed: 02/07/2023] Open
Abstract
Early life stress in humans (i.e. maltreatment, violence exposure, loss of a loved one) and in rodents (i.e. disrupted attachment or nesting, electric shock, restraint, predator odor) occurs during critical steps of neural circuit formation. ELS in humans is associated with increased risk for developmental psychopathology, including anxious and depressive phenotypes. The biological mechanisms underlying these potentially persistent maladaptive changes involve long-term epigenetic modifications, which have been suggested to be potentially transmissible to subsequent generations. DNA methylation is an epigenetic mechanism that modifies gene expression patterns in response to environmental challenges and influences mutation rates. It remains to be seen whether a functionally relevant fraction of DNA methylation marks can escape genome-wide erasures that occur in primordial germ cells and after fertilization within the zygote. Early life-stress-triggered changes in epigenetic mediated transmission of acquired behavioral traits among humans have been assessed mainly by targeting genes involved in the hypothalamic-pituitary-adrenal (HPA) axis, such as NR3C1 and FKBP5. Recently, researchers examining epigenetic transmission have begun to apply genome-wide approaches. In humans, reduced representation bisulfite sequencing (RRBS) was performed on peripheral samples that were obtained from individuals who were prenatally exposed to the "Dutch Hunger Winter", resulting in two Differentially Methylated Regions (DMRs) in INSR and CPTIA genes that were functionally, biologically and technically validated, and significantly associated with birth weights and LDL cholesterol levels in offspring. In rodents, non-genomic intergenerational transmission of anxiety which was associated with differentially methylated enhancers that were putatively involved in lipid signaling and synaptic/neurotransmission in hippocampal granule cells, was discovered also using RRBS. Finally, transgenerational transmission of altered behaviors was associated with sperm-derived microRNAs produced by ELS male mice. The field of epigenetic transmission is just beginning to enter the epigenomic era by using genome-wide analyses. Such approaches remain of strong interest to human studies, first in order to help to assess the relevance of the previous targeted studies, and second to discover new important epigenetic modifications of potential clinical importance. New discoveries may help to assess how transmittable the negative impact of stress may be to offspring. The latter may open doors for future treatments and resilience-promoting interventions, as well as new approaches to treat the effects of childhood trauma before the onset of psychiatric disorder.
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Affiliation(s)
| | - Daniel S. Schechter
- Address correspondence to this author at the Department of Child & Adolescent Psychiatry, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland; Tel: +41 (022) 372 5067; Fax: +91 (022) 372 5077; E-mail:
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Lemche E. Early Life Stress and Epigenetics in Late-onset Alzheimer's Dementia: A Systematic Review. Curr Genomics 2018; 19:522-602. [PMID: 30386171 PMCID: PMC6194433 DOI: 10.2174/1389202919666171229145156] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 07/27/2017] [Accepted: 12/12/2017] [Indexed: 11/22/2022] Open
Abstract
Involvement of life stress in Late-Onset Alzheimer's Disease (LOAD) has been evinced in longitudinal cohort epidemiological studies, and endocrinologic evidence suggests involvements of catecholamine and corticosteroid systems in LOAD. Early Life Stress (ELS) rodent models have successfully demonstrated sequelae of maternal separation resulting in LOAD-analogous pathology, thereby supporting a role of insulin receptor signalling pertaining to GSK-3beta facilitated tau hyper-phosphorylation and amyloidogenic processing. Discussed are relevant ELS studies, and findings from three mitogen-activated protein kinase pathways (JNK/SAPK pathway, ERK pathway, p38/MAPK pathway) relevant for mediating environmental stresses. Further considered were the roles of autophagy impairment, neuroinflammation, and brain insulin resistance. For the meta-analytic evaluation, 224 candidate gene loci were extracted from reviews of animal studies of LOAD pathophysiological mechanisms, of which 60 had no positive results in human LOAD association studies. These loci were combined with 89 gene loci confirmed as LOAD risk genes in previous GWAS and WES. Of the 313 risk gene loci evaluated, there were 35 human reports on epigenomic modifications in terms of methylation or histone acetylation. 64 microRNA gene regulation mechanisms were published for the compiled loci. Genomic association studies support close relations of both noradrenergic and glucocorticoid systems with LOAD. For HPA involvement, a CRHR1 haplotype with MAPT was described, but further association of only HSD11B1 with LOAD found; however, association of FKBP1 and NC3R1 polymorphisms was documented in support of stress influence to LOAD. In the brain insulin system, IGF2R, INSR, INSRR, and plasticity regulator ARC, were associated with LOAD. Pertaining to compromised myelin stability in LOAD, relevant associations were found for BIN1, RELN, SORL1, SORCS1, CNP, MAG, and MOG. Regarding epigenetic modifications, both methylation variability and de-acetylation were reported for LOAD. The majority of up-to-date epigenomic findings include reported modifications in the well-known LOAD core pathology loci MAPT, BACE1, APP (with FOS, EGR1), PSEN1, PSEN2, and highlight a central role of BDNF. Pertaining to ELS, relevant loci are FKBP5, EGR1, GSK3B; critical roles of inflammation are indicated by CRP, TNFA, NFKB1 modifications; for cholesterol biosynthesis, DHCR24; for myelin stability BIN1, SORL1, CNP; pertaining to (epi)genetic mechanisms, hTERT, MBD2, DNMT1, MTHFR2. Findings on gene regulation were accumulated for BACE1, MAPK signalling, TLR4, BDNF, insulin signalling, with most reports for miR-132 and miR-27. Unclear in epigenomic studies remains the role of noradrenergic signalling, previously demonstrated by neuropathological findings of childhood nucleus caeruleus degeneration for LOAD tauopathy.
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Affiliation(s)
- Erwin Lemche
- Section of Cognitive Neuropsychiatry, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
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17
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Flubendiamide affects visual and locomotory activities of Drosophila melanogaster for three successive generations (P, F1 and F2). INVERTEBRATE NEUROSCIENCE 2018; 18:6. [DOI: 10.1007/s10158-018-0210-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 04/05/2018] [Indexed: 02/06/2023]
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18
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Weger M, Sandi C. High anxiety trait: A vulnerable phenotype for stress-induced depression. Neurosci Biobehav Rev 2018; 87:27-37. [DOI: 10.1016/j.neubiorev.2018.01.012] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/14/2018] [Accepted: 01/21/2018] [Indexed: 11/25/2022]
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20
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Tan S, Ho HS, Song AY, Low J, Je HS. Maternal Separation Does Not Produce a Significant Behavioral Change in Mice. Exp Neurobiol 2017; 26:390-398. [PMID: 29302206 PMCID: PMC5746504 DOI: 10.5607/en.2017.26.6.390] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 11/24/2022] Open
Abstract
Early life adversities together with genetic predispositions have been associated with elevated risks of neuropsychiatric disorders during later life. In order to investigate the underlying mechanisms, many chronic, early-life stress paradigms in multiple animal models have been developed. Previously, studies reported that maternal separation (MS) in the early postnatal stages triggers depression-and/or anxiety-like behaviors in rats. However, similar studies using mice have reported inconsistent behavioral outcomes. In this study, we sought to assess behavioral outcomes from two different early-life stress paradigms; a conventional 3-hour MS and a maternal separation with early weaning (MSEW) paradigm using C57BL/6J male mice with independent cohorts. Our data demonstrated that both MS and MSEW paradigms did not produce reported behavioral anomalies. Therefore, MS paradigms in mice require further validation and modification.
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Affiliation(s)
- Shawn Tan
- Molecular Neurophysiology Laboratory, Signature Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
| | - Hin San Ho
- Molecular Neurophysiology Laboratory, Signature Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
| | - Anna Yoonsu Song
- Molecular Neurophysiology Laboratory, Signature Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.,College of Liberal Studies, Seoul National University, Seoul 08826, Korea
| | - Joey Low
- Molecular Neurophysiology Laboratory, Signature Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Hyunsoo Shawn Je
- Molecular Neurophysiology Laboratory, Signature Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
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Teperino R. Anti-hypertensive treatment in pregnancy impacts offspring growth and metabolism: Q&A. Mol Metab 2017; 6:1079-1080. [PMID: 29031709 PMCID: PMC5641627 DOI: 10.1016/j.molmet.2017.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 07/17/2017] [Indexed: 11/21/2022] Open
Affiliation(s)
- Raffaele Teperino
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany.
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Age-related alterations in the genetics and genomics of the male germ line. Fertil Steril 2017; 107:319-323. [PMID: 28160920 DOI: 10.1016/j.fertnstert.2016.12.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/17/2016] [Accepted: 12/19/2016] [Indexed: 01/04/2023]
Abstract
Paternal aging is associated with increased risk of genetic disease transmission to the offspring. The changes associated with aging arise predominantly through formation of single nucleotide variation through DNA replication errors, as well as possibly chronic exposure to environmental toxins and reactive oxygen species exposure. Several age-related reproductive factors are also contributory, including the systemic hormonal milieu, accumulation of environmental toxin exposure, aging germ cells, and accumulation of de novo genetic and genomic abnormalities in germ cells. In this article we review the age-related genetic and genomic changes that occur in the male germ line.
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Paternal spatial training enhances offspring's cognitive performance and synaptic plasticity in wild-type but not improve memory deficit in Alzheimer's mice. Sci Rep 2017; 7:1521. [PMID: 28484240 PMCID: PMC5431522 DOI: 10.1038/s41598-017-01811-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/30/2017] [Indexed: 01/09/2023] Open
Abstract
Recent studies suggest that spatial training can maintain associative memory capacity in Tg2576 mice, but it is not known whether the beneficial effects can be inherited from the trained fathers to their offspring. Here, we exposed male wild-type and male 3XTg Alzheimer disease (AD) mice (3-m old) respectively to spatial training for one week and assessed the transgenerational effects in the F1 offspring when they were grown to 7-m old. We found that the paternal spatial training significantly enhanced progeny’s spatial cognitive performance and synaptic transmission in wild-type mice. Among several synapse- or memory-associated proteins, we observed that the expression level of synaptotagmin 1 (SYT1) was significantly increased in the hippocampus of the paternally trained-offspring. Paternal training increased histone acetylation at the promoter of SYT1 in both fathers’ and the offspring’s hippocampus, and as well as in the fathers’ sperm. Finally, paternal spatial training for one week did not improve memory and synaptic plasticity in 3XTg AD F1 offspring. Our findings suggest paternal spatial training for one week benefits the offspring’s cognitive performance in wild-type mice with the mechanisms involving an enhanced transgenerational histone acetylation at SYT1 promoter.
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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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Albert PR. The adaptive brain in mental health: overcoming inherited risk factors. J Psychiatry Neurosci 2017; 42:3-5. [PMID: 28234595 PMCID: PMC5373710 DOI: 10.1503/jpn.160225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Paul R. Albert
- Correspondence to: P.R. Albert, Ottawa Hospital Research Institute, UOttawa Brain and Mind Research Institute, 451 Smyth Rd, Ottawa ON K1H 8M5;
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