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Changes in and asymmetry of the proteome in the human fetal frontal lobe during early development. Commun Biol 2022; 5:1031. [PMID: 36175510 PMCID: PMC9522861 DOI: 10.1038/s42003-022-04003-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 09/15/2022] [Indexed: 12/05/2022] Open
Abstract
Inherent hemispheric asymmetry is important for cognition, language and other functions. Describing normal brain and asymmetry development during early development will improve our understanding of how different hemispheres prioritize specific functions, which is currently unknown. Here, we analysed developmental changes in and asymmetry of the proteome in the bilateral frontal lobes of three foetal specimens in the late first trimester of pregnancy. We found that during this period, the difference in expression between gestational weeks (GWs) increased, and the difference in asymmetric expression decreased. Changes in the patterns of protein expression differed in the bilateral frontal lobes. Our results show that brain asymmetry can be observed in early development. These findings can guide researchers in further investigations of the mechanisms of brain asymmetry. We propose that both sides of the brain should be analysed separately in future multiomics and human brain mapping studies. Proteomic analysis of human early fetal brain tissue is undertaken to investigate bilateral developmental changes of protein expression and left-right asymmetries of protein expression.
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Short AK, Thai CW, Chen Y, Kamei N, Pham AL, Birnie MT, Bolton JL, Mortazavi A, Baram TZ. Single-Cell Transcriptional Changes in Hypothalamic Corticotropin-Releasing Factor-Expressing Neurons After Early-Life Adversity Inform Enduring Alterations in Vulnerabilities to Stress. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2021; 3:99-109. [PMID: 36712559 PMCID: PMC9874075 DOI: 10.1016/j.bpsgos.2021.12.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/11/2021] [Accepted: 12/03/2021] [Indexed: 02/01/2023] Open
Abstract
Background Mental health and vulnerabilities to neuropsychiatric disorders involve the interplay of genes and environment, particularly during sensitive developmental periods. Early-life adversity (ELA) and stress promote vulnerabilities to stress-related affective disorders, yet it is unknown how transient ELA dictates lifelong neuroendocrine and behavioral reactions to stress. The population of hypothalamic corticotropin-releasing factor (CRF)-expressing neurons that regulate stress responses is a promising candidate to mediate the long-lasting influences of ELA on stress-related behavioral and hormonal responses via enduring transcriptional and epigenetic mechanisms. Methods Capitalizing on a well-characterized model of ELA, we examined ELA-induced changes in gene expression profiles of CRF-expressing neurons in the hypothalamic paraventricular nucleus of developing male mice. We used single-cell RNA sequencing on isolated CRF-expressing neurons. We determined the enduring functional consequences of transcriptional changes on stress reactivity in adult ELA mice, including hormonal responses to acute stress, adrenal weights as a measure of chronic stress, and behaviors in the looming shadow threat task. Results Single-cell transcriptomics identified distinct and novel CRF-expressing neuronal populations, characterized by both their gene expression repertoire and their neurotransmitter profiles. ELA-provoked expression changes were selective to specific subpopulations and affected genes involved in neuronal differentiation, synapse formation, energy metabolism, and cellular responses to stress and injury. Importantly, these expression changes were impactful, apparent from adrenal hypertrophy and augmented behavioral responses to stress in adulthood. Conclusions We uncover a novel repertoire of stress-regulating CRF cell types differentially affected by ELA and resulting in augmented stress vulnerability, with relevance to the origins of stress-related affective disorders.
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Affiliation(s)
- Annabel K. Short
- Department of Anatomy and Neurobiology, University of California Irvine, Irvine, California,Department of Pediatrics, University of California Irvine, Irvine, California
| | - Christina W. Thai
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, California
| | - Yuncai Chen
- Department of Pediatrics, University of California Irvine, Irvine, California
| | - Noriko Kamei
- Department of Pediatrics, University of California Irvine, Irvine, California
| | - Aidan L. Pham
- Department of Anatomy and Neurobiology, University of California Irvine, Irvine, California,Department of Pediatrics, University of California Irvine, Irvine, California
| | - Matthew T. Birnie
- Department of Anatomy and Neurobiology, University of California Irvine, Irvine, California,Department of Pediatrics, University of California Irvine, Irvine, California
| | - Jessica L. Bolton
- Department of Anatomy and Neurobiology, University of California Irvine, Irvine, California,Department of Pediatrics, University of California Irvine, Irvine, California
| | - Ali Mortazavi
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, California
| | - Tallie Z. Baram
- Department of Anatomy and Neurobiology, University of California Irvine, Irvine, California,Department of Pediatrics, University of California Irvine, Irvine, California,Department of Neurology, University of California Irvine, Irvine, California,Address correspondence to Tallie Z. Baram, M.D., Ph.D.
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Li Z, Cogswell M, Hixson K, Brooks-Kayal AR, Russek SJ. Nuclear Respiratory Factor 1 (NRF-1) Controls the Activity Dependent Transcription of the GABA-A Receptor Beta 1 Subunit Gene in Neurons. Front Mol Neurosci 2018; 11:285. [PMID: 30186109 PMCID: PMC6113564 DOI: 10.3389/fnmol.2018.00285] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 07/27/2018] [Indexed: 11/13/2022] Open
Abstract
While the exact role of β1 subunit-containing GABA-A receptors (GABARs) in brain function is not well understood, altered expression of the β1 subunit gene (GABRB1) is associated with neurological and neuropsychiatric disorders. In particular, down-regulation of β1 subunit levels is observed in brains of patients with epilepsy, autism, bipolar disorder and schizophrenia. A pathophysiological feature of these disease states is imbalance in energy metabolism and mitochondrial dysfunction. The transcription factor, nuclear respiratory factor 1 (NRF-1), has been shown to be a key mediator of genes involved in oxidative phosphorylation and mitochondrial biogenesis. Using a variety of molecular approaches (including mobility shift, promoter/reporter assays, and overexpression of dominant negative NRF-1), we now report that NRF-1 regulates transcription of GABRB1 and that its core promoter contains a conserved canonical NRF-1 element responsible for sequence specific binding and transcriptional activation. Our identification of GABRB1 as a new target for NRF-1 in neurons suggests that genes coding for inhibitory neurotransmission may be coupled to cellular metabolism. This is especially meaningful as binding of NRF-1 to its element is sensitive to the kind of epigenetic changes that occur in multiple disorders associated with altered brain inhibition.
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Affiliation(s)
- Zhuting Li
- Laboratory of Translational Epilepsy, Department of Pharmacology and Experimental Therapeutics, School of Medicine, Boston University, Boston, MA, United States.,Department of Biomedical Engineering, College of Engineering, Boston University, Boston, MA, United States
| | - Meaghan Cogswell
- Laboratory of Translational Epilepsy, Department of Pharmacology and Experimental Therapeutics, School of Medicine, Boston University, Boston, MA, United States
| | - Kathryn Hixson
- Laboratory of Translational Epilepsy, Department of Pharmacology and Experimental Therapeutics, School of Medicine, Boston University, Boston, MA, United States
| | - Amy R Brooks-Kayal
- Department of Pediatrics, Division of Neurology, School of Medicine, University of Colorado, Aurora, CO, United States.,Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Shelley J Russek
- Laboratory of Translational Epilepsy, Department of Pharmacology and Experimental Therapeutics, School of Medicine, Boston University, Boston, MA, United States.,Department of Biology, Boston University, Boston, MA, United States
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Ong L, McDonald KO, Ledgerwood EC. Differentiation and cell density upregulate cytochrome c levels in megakaryoblastic cell lines: Implications for analysis of CYCS-associated thrombocytopenia. PLoS One 2017; 12:e0190433. [PMID: 29287084 PMCID: PMC5747465 DOI: 10.1371/journal.pone.0190433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 12/14/2017] [Indexed: 11/21/2022] Open
Abstract
Mutations in the cytochrome c gene (CYCS) cause autosomal dominant thrombocytopenia by an unknown mechanism. While attempting to generate megakaryoblastic cell lines exogenously expressing cytochrome c variants, we discovered that endogenous cytochrome c expression increased both upon induction of differentiation with the phorbol ester phorbol 12-myristate 13-acetate (PMA), and as cell density increased. A concomitant increase in cytochrome c oxidase subunit II in response to PMA, but not cell higher cell density, suggests upregulation of the mitochondrial respiratory chain may be a specific feature of differentiation. These results highlight the likely importance of cytochrome c in both differentiating and proliferating cells, and illustrate the unsuitability of megakaryoblastic lines for modeling CYCS-associated thrombocytopenia.
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Affiliation(s)
- Lily Ong
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Kirstin O. McDonald
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Elizabeth C. Ledgerwood
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- * E-mail:
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5
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Santpere G, Garcia-Esparcia P, Andres-Benito P, Lorente-Galdos B, Navarro A, Ferrer I. Transcriptional network analysis in frontal cortex in Lewy body diseases with focus on dementia with Lewy bodies. Brain Pathol 2017; 28:315-333. [PMID: 28321951 DOI: 10.1111/bpa.12511] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/15/2017] [Indexed: 12/13/2022] Open
Abstract
The present study investigates global transcriptional changes in frontal cortex area 8 in incidental Lewy Body disease (iLBD), Parkinson disease (PD) and Dementia with Lewy bodies (DLB). We identified different coexpressed gene sets associated with disease stages, and gene ontology categories enriched in gene modules and differentially expressed genes including modules or gene clusters correlated to iLBD comprising upregulated dynein genes and taste receptors, and downregulated innate inflammation. Focusing on DLB, we found modules with genes significantly enriched in functions related to RNA and DNA production, mitochondria and energy metabolism, purine metabolism, chaperone and protein folding system and synapses and neurotransmission (particularly the GABAergic system). The expression of more than fifty selected genes was assessed with real time quantitative polymerase chain reaction. Our findings provide, for the first time, evidence of molecular cortical alterations in iLBD and involvement of several key metabolic pathways and gene hubs in DLB which may underlie cognitive impairment and dementia.
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Affiliation(s)
- Gabriel Santpere
- Department of Neurobiology, Yale School of Medicine, New Haven, CT.,Department of Experimental and Health Sciences, IBE, Institute of Evolutionary Biology, Universitat Pompeu Fabra-CSIC, Barcelona, Spain
| | - Paula Garcia-Esparcia
- Department of Pathology and Experimental Therapeutics, University of Barcelona, L'Hospitalet de Llobregat, Spain
| | - Pol Andres-Benito
- Department of Pathology and Experimental Therapeutics, University of Barcelona, L'Hospitalet de Llobregat, Spain
| | - Belen Lorente-Galdos
- Department of Neurobiology, Yale School of Medicine, New Haven, CT.,Department of Experimental and Health Sciences, IBE, Institute of Evolutionary Biology, Universitat Pompeu Fabra-CSIC, Barcelona, Spain
| | - Arcadi Navarro
- Department of Experimental and Health Sciences, IBE, Institute of Evolutionary Biology, Universitat Pompeu Fabra-CSIC, Barcelona, Spain.,Institute of Science and Technology, Centre for Genomic Regulation (CRG), Barcelona, Spain.,National Institute for Bioinformatics (INB), Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Isidro Ferrer
- Department of Pathology and Experimental Therapeutics, University of Barcelona, L'Hospitalet de Llobregat, Spain.,Institute of Neuropathology, Service of Pathologic Anatomy, IDIBELL-Hospital Universitari de Bellvitge, Hospitalet de Llobregat, Spain.,Institute of Neurosciences, University of Barcelona, Hospitalet de Llobregat, Spain.,CIBERNED, Network Centre for Biomedical Research of Neurodegenerative Diseases, Institute Carlos III, Spain
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Schumacher M, Mattern C, Ghoumari A, Oudinet JP, Liere P, Labombarda F, Sitruk-Ware R, De Nicola AF, Guennoun R. Revisiting the roles of progesterone and allopregnanolone in the nervous system: resurgence of the progesterone receptors. Prog Neurobiol 2013; 113:6-39. [PMID: 24172649 DOI: 10.1016/j.pneurobio.2013.09.004] [Citation(s) in RCA: 245] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 09/15/2013] [Accepted: 09/21/2013] [Indexed: 02/08/2023]
Abstract
Progesterone is commonly considered as a female reproductive hormone and is well-known for its role in pregnancy. It is less well appreciated that progesterone and its metabolite allopregnanolone are also male hormones, as they are produced in both sexes by the adrenal glands. In addition, they are synthesized within the nervous system. Progesterone and allopregnanolone are associated with adaptation to stress, and increased production of progesterone within the brain may be part of the response of neural cells to injury. Progesterone receptors (PR) are widely distributed throughout the brain, but their study has been mainly limited to the hypothalamus and reproductive functions, and the extra-hypothalamic receptors have been neglected. This lack of information about brain functions of PR is unexpected, as the protective and trophic effects of progesterone are much investigated, and as the therapeutic potential of progesterone as a neuroprotective and promyelinating agent is currently being assessed in clinical trials. The little attention devoted to the brain functions of PR may relate to the widely accepted assumption that non-reproductive actions of progesterone may be mainly mediated by allopregnanolone, which does not bind to PR, but acts as a potent positive modulator of γ-aminobutyric acid type A (GABA(A) receptors. The aim of this review is to critically discuss effects of progesterone on the nervous system via PR, and of allopregnanolone via its modulation of GABA(A) receptors, with main focus on the brain.
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Affiliation(s)
- M Schumacher
- UMR 788 Inserm and University Paris-Sud, Kremlin-Bicêtre, France.
| | - C Mattern
- M et P Pharma AG, Emmetten, Switzerland
| | - A Ghoumari
- UMR 788 Inserm and University Paris-Sud, Kremlin-Bicêtre, France
| | - J P Oudinet
- UMR 788 Inserm and University Paris-Sud, Kremlin-Bicêtre, France
| | - P Liere
- UMR 788 Inserm and University Paris-Sud, Kremlin-Bicêtre, France
| | - F Labombarda
- Instituto de Biologia y Medicina Experimental and University of Buenos Aires, Argentina
| | - R Sitruk-Ware
- Population Council and Rockefeller University, New York, USA
| | - A F De Nicola
- Instituto de Biologia y Medicina Experimental and University of Buenos Aires, Argentina
| | - R Guennoun
- UMR 788 Inserm and University Paris-Sud, Kremlin-Bicêtre, France
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