1
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Goh JY, Rueda P, Taylor J, Rathbone A, Scott D, Langmead CJ, Fone KC, Stewart GD, King MV. Transcriptomic analysis of rat prefrontal cortex following chronic stress induced by social isolation - Relevance to psychiatric and neurodevelopmental illness, and implications for treatment. Neurobiol Stress 2024; 33:100679. [PMID: 39502833 PMCID: PMC11536066 DOI: 10.1016/j.ynstr.2024.100679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/27/2024] [Accepted: 10/10/2024] [Indexed: 11/08/2024] Open
Abstract
Social isolation is an established risk factor for psychiatric illness, and became increasingly topical with the spread of SARS-CoV-2. We used RNA sequencing (RNA-Seq) to enable unbiased assessment of transcriptomic changes within the prefrontal cortex (PFC) of isolation-reared rats. To provide insight into the relevance of this manipulation for studying human illness, we compared differentially expressed genes (DEGs) and enriched biological functions against datasets involving post-mortem frontal cortical tissue from patients with psychiatric and neurodevelopmental illnesses. Sixteen male Sprague-Dawley rats were reared in groups of four or individually from weaning on postnatal day (PND) 22-24 until PFC tissue collection for RNA-Seq (PND64-66). We identified a total of 183 DEGs in isolates, of which 128 mirrored those in PFC tissue from patients with stress-related mental illnesses and/or neurodevelopmental conditions featuring social deficits. Seventy-one encode proteins classed as druggable by the gene-drug interaction database. Interestingly there are antagonists or inhibitors for the products of three of these up-regulated DEGs (Hrh3, Snca and Sod1) and agonists or activators for products of six of these down-regulated DEGs (Chrm4, Klf2, Lrrk2, Nr4a1, Nr4a3 and Prkca). Some have already undergone pre-clinical and clinical evaluation, and studies with the remainder may be warranted. Changes to Hrh3, Sod1, Chrm4, Lrrk2, Nr4a1 and Prkca were replicated in an independent cohort of sixteen male Sprague-Dawley rats via quantitative reverse transcription polymerase chain reaction (qRT-PCR). Our findings support the continued use of post-weaning isolation rearing to investigate the neurobiology of stress-related disorders and evaluate therapeutic targets.
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Affiliation(s)
- Jen-Yin Goh
- Neuromedicines Discovery Centre, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Patricia Rueda
- Neuromedicines Discovery Centre, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Joy Taylor
- School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Alex Rathbone
- School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Daniel Scott
- School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Christopher J. Langmead
- Neuromedicines Discovery Centre, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Kevin C.F. Fone
- School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Gregory D. Stewart
- Neuromedicines Discovery Centre, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Madeleine V. King
- School of Life Sciences, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
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2
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Marquardt AE, Basu M, VanRyzin JW, Ament SA, McCarthy MM. The transcriptome of playfulness is sex-biased in the juvenile rat medial amygdala: a role for inhibitory neurons. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.09.11.612456. [PMID: 39314276 PMCID: PMC11419002 DOI: 10.1101/2024.09.11.612456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
Social play is a dynamic behavior known to be sexually differentiated; in most species, males play more than females, a sex difference driven in large part by the medial amygdala (MeA). Despite the well-conserved nature of this sex difference and the importance of social play for appropriate maturation of brain and behavior, the full mechanism establishing the sex bias in play is unknown. Here, we explore "the transcriptome of playfulness" in the juvenile rat MeA, assessing differences in gene expression between high- and low-playing animals of both sexes via bulk RNA-sequencing. Using weighted gene co-expression network analysis (WGCNA) to identify gene modules combined with analysis of differentially expressed genes (DEGs), we demonstrate that the transcriptomic profile in the juvenile rat MeA associated with playfulness is largely distinct in males compared to females. Of the 13 play-associated WGCNA networks identified, only two were associated with play in both sexes, and very few DEGs associated with playfulness were shared between males and females. Data from our parallel single-cell RNA-sequencing experiments using amygdala samples from newborn male and female rats suggests that inhibitory neurons drive this sex difference, as the majority of sex-biased DEGs in the neonatal amygdala are enriched within this population. Supporting this notion, we demonstrate that inhibitory neurons comprise the majority of play-active cells in the juvenile MeA, with males having a greater number of play-active cells than females, of which a larger proportion are GABAergic. Through integrative bioinformatic analyses, we further explore the expression, function, and cell-type specificity of key play-associated modules and the regulator "hub genes" predicted to drive them, providing valuable insight into the sex-biased mechanisms underlying this fundamental social behavior.
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3
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Kaplan G. The evolution of social play in songbirds, parrots and cockatoos - emotional or highly complex cognitive behaviour or both? Neurosci Biobehav Rev 2024; 161:105621. [PMID: 38479604 DOI: 10.1016/j.neubiorev.2024.105621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 02/04/2024] [Accepted: 03/09/2024] [Indexed: 04/20/2024]
Abstract
Social play has been described in many animals. However, much of this social behaviour among birds, particularly in adults, is still relatively unexplored in terms of the environmental, psychological, and social dynamics of play. This paper provides an overview of what we know about adult social play in birds and addresses areas in which subtleties and distinctions, such as in play initiation and social organisation and its relationship to expressions of play, are considered in detail. The paper considers emotional, social, innovative, and cognitive aspects of play, then the environmental conditions and affiliative bonds, suggesting a surprisingly complex framework of criteria awaiting further research. Adult social play has so far been studied in only a small number of avian species, exclusively in those with a particularly large brain relative to body size without necessarily addressing brain functions and lateralization. When lateralization of brain function is considered, it can further illuminate a possibly significant relevance of play behaviour to the evolution of cognition, to management of emotions, and the development of sociality.
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Affiliation(s)
- Gisela Kaplan
- University of New England, Armidale, NSW, Australia.
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4
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Zeid D, Toussaint AB, Dressler CC, Schumacher SP, Do C, Desalvo H, Selamawi D, Bongiovanni AR, Mayberry HL, Carr GV, Wimmer ME. Paternal morphine exposure in rats reduces social play in adolescent male progeny without affecting drug-taking behavior in juvenile males or female offspring. Mol Cell Neurosci 2023; 126:103877. [PMID: 37385516 PMCID: PMC10528482 DOI: 10.1016/j.mcn.2023.103877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 06/02/2023] [Accepted: 06/24/2023] [Indexed: 07/01/2023] Open
Abstract
The ongoing opioid addiction crisis necessitates the identification of novel risk factors to improve prevention and treatment of opioid use disorder. Parental opioid exposure has recently emerged as a potential regulator of offspring vulnerability to opioid misuse, in addition to heritable genetic liability. An understudied aspect of this "missing heritability" is the developmental presentation of these cross-generational phenotypes. This is an especially relevant question in the context of inherited addiction-related phenotypes, given the prominent role of developmental processes in the etiology of psychiatric disorders. Paternal morphine self-administration was previously shown to alter the sensitivity to the reinforcing and antinociceptive properties of opioids in the next generation. Here, phenotyping was expanded to include the adolescent period, with a focus on endophenotypes related to opioid use disorders and pain. Paternal morphine exposure did not alter heroin or cocaine self-administration in male and female juvenile progeny. Further, baseline sensory reflexes related to pain were unaltered in morphine-sired adolescent rats of either sex. However, morphine-sired adolescent males exhibited a reduction in social play behavior. Our findings suggest that, in morphine-sired male offspring, paternal opioid exposure does not affect opioid intake during adolescence, suggesting that this phenotype does not emerge until later in life. Altered social behaviors in male morphine-sired adolescents indicate that the changes in drug-taking behavior in adults sired by morphine-exposed sires may be due to more complex factors not yet fully assessed.
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Affiliation(s)
- Dana Zeid
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Andre B Toussaint
- Zuckerman Mind Brain Behavior Institute, Columbia University, United States of America
| | - Carmen C Dressler
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Samuel P Schumacher
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Chau Do
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Heather Desalvo
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Danait Selamawi
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Angela R Bongiovanni
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Hannah L Mayberry
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America
| | - Gregory V Carr
- Lieber Institute of Brain Development, Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, United States of America
| | - Mathieu E Wimmer
- Department of Psychology and Neuroscience, College of Liberal Arts, Temple University, United States of America.
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5
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Ferrara NC, Opendak M. Amygdala circuit transitions supporting developmentally-appropriate social behavior. Neurobiol Learn Mem 2023; 201:107762. [PMID: 37116857 PMCID: PMC10204580 DOI: 10.1016/j.nlm.2023.107762] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/30/2023] [Accepted: 04/22/2023] [Indexed: 04/30/2023]
Abstract
Social behaviors dynamically change throughout the lifespan alongside the maturation of neural circuits. The basolateral region of the amygdala (BLA), in particular, undergoes substantial maturational changes from birth throughout adolescence that are characterized by changes in excitation, inhibition, and dopaminergic modulation. In this review, we detail the trajectory through which BLA circuits mature and are influenced by dopaminergic systems to guide transitions in social behavior in infancy and adolescence using data from rodents. In early life, social behavior is oriented towards approaching the attachment figure, with minimal BLA involvement. Around weaning age, dopaminergic innervation of the BLA introduces avoidance of novel peers into rat pups' behavioral repertoire. In adolescence, social behavior transitions towards peer-peer interactions with a high incidence of social play-related behaviors. This transition coincides with an increasing role of the BLA in the regulation of social behavior. Adolescent BLA maturation can be characterized by an increasing integration and function of local inhibitory GABAergic circuits and their engagement by the medial prefrontal cortex (mPFC). Manipulation of these transitions using viral circuit dissection techniques and early adversity paradigms reveals the sensitivity of this system and its role in producing age-appropriate social behavior.
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Affiliation(s)
- Nicole C Ferrara
- Discipline of Physiology and Biophysics, Department of Foundational Sciences and Humanities, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA; Center for Neurobiology of Stress Resilience and Psychiatric Disorders, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Maya Opendak
- Kennedy Krieger Institute, Baltimore, MD, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Johns Hopkins Kavli Neuroscience Discovery Institute, Baltimore, MD, USA.
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6
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Pellis SM, Pellis VC, Ham JR, Stark RA. Play fighting and the development of the social brain: The rat's tale. Neurosci Biobehav Rev 2023; 145:105037. [PMID: 36621585 DOI: 10.1016/j.neubiorev.2023.105037] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/29/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
The benefits gained by young animals engaging in play fighting have been a subject of conjecture for over a hundred years. Progress in understanding the behavioral development of play fighting and the underlying neurobiology of laboratory rats has produced a coherent model that sheds light on this matter. Depriving rats of typical peer-peer play experience during the juvenile period leads to adults with socio-cognitive deficiencies and these are correlated with physiological and anatomical changes to the neurons of the prefrontal cortex, especially the medial prefrontal cortex. Detailed analysis of juvenile peer play has shown that using the abilities needed to ensure that play fighting is reciprocal is critical for attaining these benefits. Therefore, unlike that which was posited by many earlier hypotheses, play fighting does not train specific motor actions, but rather, improves a skill set that can be applied in many different social and non-social contexts. There are still gaps in the rat model that need to be understood, but the model is well-enough developed to provide a framework for broader comparative studies of mammals from diverse lineages that engage in play fighting.
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Affiliation(s)
- Sergio M Pellis
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta T1K3M4, Canada.
| | - Vivien C Pellis
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta T1K3M4, Canada
| | - Jackson R Ham
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta T1K3M4, Canada
| | - Rachel A Stark
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta T1K3M4, Canada
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7
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Moon AL, Clifton NE, Wellard N, Thomas KL, Hall J, Brydges NM. Social interaction following prepubertal stress alters prefrontal gene expression associated with cell signalling and oligodendrocytes. Transl Psychiatry 2022; 12:516. [PMID: 36526621 PMCID: PMC9758144 DOI: 10.1038/s41398-022-02280-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 11/18/2022] [Accepted: 12/02/2022] [Indexed: 12/23/2022] Open
Abstract
Early-life adversity is associated with an increased risk of psychopathology, including mood disorders, later in life. Early-life stress affects several physiological systems, however, the exact mechanisms underlying pathological risk are not fully understood. This knowledge is crucial in developing appropriate therapeutic interventions. The prepubertal period is documented as a key developmental period for the maturation of the prefrontal cortex (PFC), a brain region involved in higher cognitive functions, including social function. In this study, we performed RNA sequencing on the PFC of adult rats who had experienced prepubertal stress (PPS) and controls to investigate the genome-wide consequences of this stress. PPS alters social behaviour in adulthood, therefore we also performed RNA sequencing on PPS and control rats following a social interaction test to determine social activity-dependent gene changes. At a baseline state (1 week following a social interaction test), no genes were differentially expressed in the PPS group. However, 1603 genes were differentially expressed in PPS rats compared to controls following a social interaction. These genes were enriched in biological pathways associated with cell signalling and axon myelination dynamics. Cell enrichment analysis showed these genes were associated with oligodendrocytes, and a comparison with an existing early-life stress sequencing dataset showed that pathways linked to oligodendrocyte morphology are impacted in a range of models of early-life stress in rodents. In conclusion, we identify pathways, including those involved in axon myelination, that are differentially activated in the adult in response to social stimulation following PPS. These differential responses may contribute to vulnerability to psychiatric pathology.
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Affiliation(s)
- Anna L Moon
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK
| | - Nicholas E Clifton
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK.,MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK
| | - Natalie Wellard
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK
| | - Kerrie L Thomas
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK.,School of Biosciences, Cardiff University, Museum Avenue, Cardiff, CF10 3AX, UK
| | - Jeremy Hall
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK.,MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK
| | - Nichola M Brydges
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK.
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8
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Study on Tissue Homogenization Buffer Composition for Brain Mass Spectrometry-Based Proteomics. Biomedicines 2022; 10:biomedicines10102466. [PMID: 36289728 PMCID: PMC9598821 DOI: 10.3390/biomedicines10102466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/25/2022] Open
Abstract
Mass spectrometry-based proteomics aims to study the proteome both qualitatively and quantitatively. A key step in proteomic analysis is sample preparation, which is crucial for reliable results. We investigated the effect of the composition of the homogenization buffer used to extract proteins from brain tissue on the yield of protein extraction and the number and type of extracted proteins. Three different types of buffers were compared—detergent-based buffer (DB), chaotropic agent-based buffer (CAB) and buffer without detergent and chaotropic agent (DFB). Based on label-free quantitative protein analysis, detergent buffer was identified as the most suitable for global proteomic profiling of brain tissue. It allows the most efficient extraction of membrane proteins, synaptic and synaptic membrane proteins along with ribosomal, mitochondrial and myelin sheath proteins, which are of particular interest in the field of neurodegenerative disorders research.
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9
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Pan X, Liu F, Song Y, Wang H, Wang L, Qiu H, Price M, Li J. Motor Stereotypic Behavior Was Associated With Immune Response in Macaques: Insight From Transcriptome and Gut Microbiota Analysis. Front Microbiol 2021; 12:644540. [PMID: 34394017 PMCID: PMC8360393 DOI: 10.3389/fmicb.2021.644540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 07/07/2021] [Indexed: 01/03/2023] Open
Abstract
Motor stereotypic behaviors (MSBs) are common in captive rhesus macaques (Macaca mulatta) and human with psychiatric diseases. However, large gaps remain in our understanding of the molecular mechanisms that mediate this behavior and whether there are similarities between human and non-human primates that exhibit this behavior, especially at gene expression and gut microbiota levels. The present study combined behavior, blood transcriptome, and gut microbiota data of two groups of captive macaques to explore this issue (i.e., MSB macaques with high MSB exhibition and those with low: control macaques). Observation data showed that MSB macaques spent the most time on MSB (33.95%), while the CONTROL macaques allocated more time to active (30.99%) and general behavior (30.0%), and only 0.97% of their time for MSB. Blood transcriptome analysis revealed 382 differentially expressed genes between the two groups, with 339 upregulated genes significantly enriched in inflammation/immune response-related pathway. We also identified upregulated pro-inflammatory genes TNFRSF1A, IL1R1, and IL6R. Protein–protein interaction network analysis screened nine hub genes that were all related to innate immune response, and our transcriptomic results were highly similar to findings in human psychiatric disorders. We found that there were significant differences in the beta-diversity of gut microbiota between MSB and CONTROL macaques. Of which Phascolarctobacterium, the producer of short chain fatty acids (SCFAs), was less abundant in MSB macaques. Meanwhile, PICRUSTs predicted that SCFAs intermediates biosynthesis and metabolic pathways were significantly downregulated in MSB macaques. Together, our study revealed that the behavioral, gene expression levels, and gut microbiota composition in MSB macaques was different to controls, and MSB was closely linked with inflammation and immune response. This work provides valuable information for future in-depth investigation of MSB and human psychiatric diseases.
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Affiliation(s)
- Xuan Pan
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Fangyuan Liu
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Yang Song
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Hongrun Wang
- Development and Application of Human Major Disease Monkey Model Key Laboratory of Sichuan Province, Sichuan Hengshu Bio-Technology Co., Ltd., Yibin, China
| | - Lingyun Wang
- Development and Application of Human Major Disease Monkey Model Key Laboratory of Sichuan Province, Sichuan Hengshu Bio-Technology Co., Ltd., Yibin, China
| | - Hong Qiu
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Megan Price
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Jing Li
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
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10
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Persistent proteomic changes in glutamatergic and GABAergic signaling in the amygdala of adolescent rats exposed to chlorpyrifos as juveniles. Neurotoxicology 2021; 85:234-244. [PMID: 34058248 DOI: 10.1016/j.neuro.2021.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 04/23/2021] [Accepted: 05/24/2021] [Indexed: 12/25/2022]
Abstract
Chlorpyrifos (CPF) remains one of the most widely used organophosphorus insecticides (OPs) despite the concerns about its developmental neurotoxicity. Developmental exposure to CPF has long-lasting negative impacts, including abnormal emotional behaviors. These negative impacts are observed at exposure levels do not cause inhibition of acetylcholinesterase, the canonical target of OPs. Exposure to CPF at these levels inhibits the endocannabinoid metabolizing enzyme fatty acid amide hydrolase (FAAH) but it is not clear what the persistent effects of this inhibition are. To investigate this, male rat pups were exposed orally to either corn oil, 0.75 mg/kg CPF, or 0.02 mg/kg PF-04457845 (PF; a specific inhibitor of FAAH) daily from postnatal day 10 (PND10) - PND16. This dosage of CPF does not inhibit brain cholinesterase activity but inhibits FAAH activity. On PND38 (adolescence), the protein expression in the amygdala was determined using a label-free shotgun proteomic approach. The analysis of control vs CPF and control vs PF led to the identification of 44 and 142 differentially regulated proteins, respectively. Gene ontology enrichment analysis revealed that most of the proteins with altered expression in both CPF and PF treatment groups were localized in the synapse-related regions, such as presynaptic membrane, postsynaptic density, and synaptic vesicle. The different biological processes affected by both treatment groups included persistent synaptic potentiation, glutamate receptor signaling, protein phosphorylation, and chemical synaptic transmission. These results also indicated disturbances in the balance between glutamatergic (↓ Glutamate AMPA receptor 2, ↓ Excitatory amino acid transporter 2, and ↑ vesicular glutamate transporter 2) and GABAergic signaling (↑ GABA transporter 3 and ↑ glutamate decarboxylase 2). This imbalance could play a role in the abnormal emotional behavior that we have previously reported. These results suggest that there is a similar pattern of expression between CPF and PF, and both these chemicals can persistently alter emotional behavior as a consequence of inhibition of FAAH.
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11
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Yuan Y, Deng Q, Wei X, Liu Y, Lan Q, Jiang Y, Yu Y, Guo P, Xu J, Yu C, Han L, Cheng M, Wu P, Zhang X, Lai Y, Volpe G, Esteban MA, Yang H, Liu C, Liu L. The Chromatin Accessibility Landscape of Adult Rat. Front Genet 2021; 12:651604. [PMID: 34108989 PMCID: PMC8181391 DOI: 10.3389/fgene.2021.651604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 04/01/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Yue Yuan
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | - Qiuting Deng
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | - Xiaoyu Wei
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | - Yang Liu
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | | | - Yu Jiang
- First Hospital, Jilin University, Changchun, China
| | - Yeya Yu
- BGI-Shenzhen, Shenzhen, China.,BGI College, Zhengzhou University, Zhengzhou, China
| | - Pengcheng Guo
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jiangshan Xu
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | - Cong Yu
- BGI-Shenzhen, Shenzhen, China
| | - Lei Han
- BGI-Shenzhen, Shenzhen, China
| | - Mengnan Cheng
- BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | | | - Xiao Zhang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yiwei Lai
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Giacomo Volpe
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Miguel A Esteban
- BGI-Shenzhen, Shenzhen, China.,First Hospital, Jilin University, Changchun, China.,College of Veterinary Medicine, Jilin University, Changchun, China.,Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, China
| | - Huanming Yang
- BGI-Shenzhen, Shenzhen, China.,James D. Watson Institute of Genome Sciences, Hangzhou, China.,Guangdong Provincial Academician Workstation of BGI Synthetic Genomics, BGI-Shenzhen, Shenzhen, China
| | - Chuanyu Liu
- BGI-Shenzhen, Shenzhen, China.,Shenzhen Bay Laboratory, Shenzhen, China
| | - Longqi Liu
- BGI-Shenzhen, Shenzhen, China.,Shenzhen Bay Laboratory, Shenzhen, China
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12
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Boukersi H, Lebaili N, Nosjean A, Samson N, Faure A, Granon S. Effects of water restriction on social behavior and 5-HT neurons density in the dorsal and median raphe nuclei in mice. Behav Brain Res 2020; 399:113022. [PMID: 33232678 DOI: 10.1016/j.bbr.2020.113022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 10/22/2022]
Abstract
We explored here the hypothesis that temporary chronic water restriction in mice affects social behavior, via its action on the density of 5-HT neurons in dorsal and median raphe nuclei (DRN and MRN). For that, we submitted adult C57BL/6 J mice to mild and controlled temporary dehydration, i.e., 6 h of water access every 48 h for 15 days. We investigated their social behavior in a social interaction task known to allow free and reciprocal social contact. Results showed that temporary dehydration increases significantly time spent in social contact and social dominance. It also expands 5-HT neuron density within both DRN and MRN and the behavioral and neuronal plasticity were positively correlated. Our findings suggest that disturbance in 5-HT neurotransmission caused by temporary dehydration stress unbalances choice processes of animals in social context.
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Affiliation(s)
- Houari Boukersi
- Department of Biology, Faculty of Natural Science and Life, Hassiba Benbouali University, Chlef, Algeria; Animal Ecophysiology Laboratory, Higher Normal School Elbachir El-Ibrahimi, Kouba, Algers, Algeria; Paris-Saclay Institute of Neuroscience (NeuroPSI), Paris-Saclay University, CNRS 9197, Orsay, France.
| | - Nemcha Lebaili
- Animal Ecophysiology Laboratory, Higher Normal School Elbachir El-Ibrahimi, Kouba, Algers, Algeria
| | - Anne Nosjean
- Paris-Saclay Institute of Neuroscience (NeuroPSI), Paris-Saclay University, CNRS 9197, Orsay, France
| | - Nathalie Samson
- Paris-Saclay Institute of Neuroscience (NeuroPSI), Paris-Saclay University, CNRS 9197, Orsay, France
| | - Alexis Faure
- Paris-Saclay Institute of Neuroscience (NeuroPSI), Paris-Saclay University, CNRS 9197, Orsay, France
| | - Sylvie Granon
- Paris-Saclay Institute of Neuroscience (NeuroPSI), Paris-Saclay University, CNRS 9197, Orsay, France
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Li Z, Gao C, Peng J, Liu M, Cong B. Multi-omics analysis of pathological changes in the amygdala of rats subjected to chronic restraint stress. Behav Brain Res 2020; 392:112735. [PMID: 32502515 DOI: 10.1016/j.bbr.2020.112735] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Overwhelming stress potentially results in the occurrence of many mental diseases. The amygdala is one region in the brain targeted by stress. Recent studies have shown that changes in the amygdala of subjects under stress are related to depression, anxiety and post-traumatic stress disorder (PTSD). However, researchers have not clearly elucidated the changes in the amygdala in response to stress and the underlying mechanism. We conducted several experiments to understand this mechanism. METHODS In this study, we first established a rat model of chronic restraint stress (CRS) and observed the changes in behavior and neurons in the amygdala. Second, an integrated metabolomics and proteomics experiment was conducted to identify potential stress-related biomarkers. Finally, we validated two molecules of interest and detected four apoptosis-related proteins using Western blotting to further determine the related mechanisms. RESULTS Our study revealed the presence of anxiety-like behaviors and pathological changes in amygdalar neurons in the rat model. In the multi-omics analysis, 19 potential molecules were identified. Western blotting confirmed consistent changes in the levels of Cry1 and Brcc36 obtained in previous results. The levels of proteins in the ataxia telangiectasia mutated (ATM) pathway were increased in the CRS group. CONCLUSIONS CRS causes anxiety-like behaviors that are potentially related to decreased levels of GABA in the amygdala. Moreover, CRS potentially alters the levels of Cry1 and Brcc36 and results in circadian rhythm disorder and impairments in DNA repair and apoptosis in the amygdala through a mechanism mediated by the ATM pathway.
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Affiliation(s)
- Zhonghua Li
- West China School of Basic Medical Sciences & Forensic Science, Sichuan University, Chengdu, 610041 China; Procuratorial Technology Department of the People's Procuratorate of Sichuan Province, Chengdu, 610041 China
| | - Chong Gao
- Procuratorial Technology Information Center of the Supreme People's Procuratorate, Beijing, 100726 China
| | - Jin Peng
- West China School of Basic Medical Sciences & Forensic Science, Sichuan University, Chengdu, 610041 China
| | - Min Liu
- West China School of Basic Medical Sciences & Forensic Science, Sichuan University, Chengdu, 610041 China
| | - Bin Cong
- West China School of Basic Medical Sciences & Forensic Science, Sichuan University, Chengdu, 610041 China; Department of Forensic Medicine, Hebei Medical University, Shijiazhuang, 050017 China.
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