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Benítez-Burraco A, Jiménez-Romero MS, Fernández-Urquiza M. Delving into the Genetic Causes of Language Impairment in a Case of Partial Deletion of NRXN1. Mol Syndromol 2023; 13:496-510. [PMID: 36660026 PMCID: PMC9843585 DOI: 10.1159/000524710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/22/2022] [Indexed: 01/22/2023] Open
Abstract
Introduction Copy-number variations (CNVs) impacting on small DNA stretches and associated with language deficits provide a unique window to the role played by specific genes in language function. Methods We report in detail on the cognitive, language, and genetic features of a girl bearing a small deletion (0.186 Mb) in the 2p16.3 region, arr[hg19] 2p16.3(50761778_50947729)×1, affecting exons 3-7 of NRXN1, a neurexin-coding gene previously related to schizophrenia, autism (ASD), attention deficit hyperactivity disorder (ADHD), mood disorder, and intellectual disability (ID). Results The proband exhibits many of the features commonly found in subjects with deletions of NRXN1, like ASD-like traits (including ritualized behaviors, disordered sensory aspects, social disturbances, and impaired theory of mind), ADHD symptoms, moderate ID, and impaired speech and language. Regarding this latter aspect, we observed altered speech production, underdeveloped phonological awareness, minimal syntax, serious shortage of active vocabulary, impaired receptive language, and inappropriate pragmatic behavior (including lack of metapragmatic awareness and communicative use of gaze). Microarray analyses point to the dysregulation of several genes important for language function in the girl compared to her healthy parents. Discussion Although some basic cognitive deficit - such as the impairment of executive function - might contribute to the language problems exhibited by the proband, molecular evidence suggests that they might result, to a great extent, from the abnormal expression of genes directly related to language.
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Affiliation(s)
- Antonio Benítez-Burraco
- Department of Spanish, Linguistics, and Theory of Literature (Linguistics), University of Seville, Seville, Spain,*Antonio Benítez-Burraco,
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Álvarez-Pérez B, Deulofeu M, Homs J, Merlos M, Vela JM, Verdú E, Boadas-Vaello P. Long-lasting reflexive and nonreflexive pain responses in two mouse models of fibromyalgia-like condition. Sci Rep 2022; 12:9719. [PMID: 35691979 PMCID: PMC9189106 DOI: 10.1038/s41598-022-13968-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/31/2022] [Indexed: 11/09/2022] Open
Abstract
Nociplastic pain arises from altered nociception despite no clear evidence of tissue or somatosensory system damage, and fibromyalgia syndrome can be highlighted as a prototype of this chronic pain subtype. Currently, there is a lack of effective treatments to alleviate both reflexive and nonreflexive pain responses associated with fibromyalgia condition, and suitable preclinical models are needed to assess new pharmacological strategies. In this context, although in recent years some remarkable animal models have been developed to mimic the main characteristics of human fibromyalgia, most of them show pain responses in the short term. Considering the chronicity of this condition, the present work aimed to develop two mouse models showing long-lasting reflexive and nonreflexive pain responses after several reserpine (RIM) or intramuscular acid saline solution (ASI) injections. To our knowledge, this is the first study showing that RIM6 and ASI mouse models show reflexive and nonreflexive responses up to 5-6 weeks, accompanied by either astro- or microgliosis in the spinal cord as pivotal physiopathology processes related to such condition development. In addition, acute treatment with pregabalin resulted in reflexive pain response alleviation in both the RIM6 and ASI models. Consequently, both may be considered suitable experimental models of fibromyalgia-like condition, especially RIM6.
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Affiliation(s)
- Beltrán Álvarez-Pérez
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, Facultat de Medicina, Universitat de Girona (UdG), Emili Grahit 77, 17003, Girona, Catalonia, Spain
| | - Meritxell Deulofeu
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, Facultat de Medicina, Universitat de Girona (UdG), Emili Grahit 77, 17003, Girona, Catalonia, Spain
| | - Judit Homs
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, Facultat de Medicina, Universitat de Girona (UdG), Emili Grahit 77, 17003, Girona, Catalonia, Spain.,University School of Health and Sport (EUSES), University of Girona, Girona, Catalonia, Spain
| | - Manuel Merlos
- WeLab Barcelona, Parc Científic de Barcelona, Barcelona, Catalonia, Spain
| | - José Miguel Vela
- WeLab Barcelona, Parc Científic de Barcelona, Barcelona, Catalonia, Spain
| | - Enrique Verdú
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, Facultat de Medicina, Universitat de Girona (UdG), Emili Grahit 77, 17003, Girona, Catalonia, Spain.
| | - Pere Boadas-Vaello
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, Facultat de Medicina, Universitat de Girona (UdG), Emili Grahit 77, 17003, Girona, Catalonia, Spain.
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Tzanoulinou S, Musardo S, Contestabile A, Bariselli S, Casarotto G, Magrinelli E, Jiang YH, Jabaudon D, Bellone C. Inhibition of Trpv4 rescues circuit and social deficits unmasked by acute inflammatory response in a Shank3 mouse model of Autism. Mol Psychiatry 2022; 27:2080-2094. [PMID: 35022531 PMCID: PMC9126815 DOI: 10.1038/s41380-021-01427-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 12/08/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022]
Abstract
Mutations in the SHANK3 gene have been recognized as a genetic risk factor for Autism Spectrum Disorder (ASD), a neurodevelopmental disease characterized by social deficits and repetitive behaviors. While heterozygous SHANK3 mutations are usually the types of mutations associated with idiopathic autism in patients, heterozygous deletion of Shank3 gene in mice does not commonly induce ASD-related behavioral deficit. Here, we used in-vivo and ex-vivo approaches to demonstrate that region-specific neonatal downregulation of Shank3 in the Nucleus Accumbens promotes D1R-medium spiny neurons (D1R-MSNs) hyperexcitability and upregulates Transient Receptor Potential Vanilloid 4 (Trpv4) to impair social behavior. Interestingly, genetically vulnerable Shank3+/- mice, when challenged with Lipopolysaccharide to induce an acute inflammatory response, showed similar circuit and behavioral alterations that were rescued by acute Trpv4 inhibition. Altogether our data demonstrate shared molecular and circuit mechanisms between ASD-relevant genetic alterations and environmental insults, which ultimately lead to sociability dysfunctions.
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Affiliation(s)
- Stamatina Tzanoulinou
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland ,grid.9851.50000 0001 2165 4204Present Address: Department of Biomedical Sciences (DSB), FBM, University of Lausanne, Lausanne, Switzerland
| | - Stefano Musardo
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland
| | - Alessandro Contestabile
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland
| | - Sebastiano Bariselli
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland
| | - Giulia Casarotto
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland
| | - Elia Magrinelli
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland
| | - Yong-hui Jiang
- grid.47100.320000000419368710Department of Genetics, Yale University School of Medicine, New Haven, CT 06520 USA
| | - Denis Jabaudon
- grid.8591.50000 0001 2322 4988Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland
| | - Camilla Bellone
- Department of Fundamental Neuroscience, CMU, University of Geneva, Geneva, Switzerland.
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4
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Almeida MF, Piehler T, Carstens KE, Zhao M, Samadi M, Dudek SM, Norton CJ, Parisian CM, Farizatto KL, Bahr BA. Distinct and dementia-related synaptopathy in the hippocampus after military blast exposures. Brain Pathol 2021; 31:e12936. [PMID: 33629462 PMCID: PMC8412116 DOI: 10.1111/bpa.12936] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/19/2020] [Accepted: 01/05/2021] [Indexed: 12/13/2022] Open
Abstract
Explosive shockwaves, and other types of blast exposures, are linked to injuries commonly associated with military service and to an increased risk for the onset of dementia. Neurological complications following a blast injury, including depression, anxiety, and memory problems, often persist even when brain damage is undetectable. Here, hippocampal explants were exposed to the explosive 1,3,5-trinitro-1,3,5-triazinane (RDX) to identify indicators of blast-induced changes within important neuronal circuitries. Highly controlled detonations of small, 1.7-gram RDX spherical charges reduced synaptic markers known to be downregulated in cognitive disorders, but without causing overt neuronal loss or astroglial responses. In the absence of neuromorphological alterations, levels of synaptophysin, GluA1, and synapsin IIb were significantly diminished within 24 hr, and these synaptic components exhibited progressive reductions following blast exposure as compared to their stable maintenance in control explants. In contrast, labeling of the synapsin IIa isoform remained unaltered, while neuropilar staining of other markers decreased, including synapsin IIb and neural cell adhesion molecule (NCAM) isoforms, along with evidence of NCAM proteolytic breakdown. NCAM180 displayed a distinct decline after the RDX blasts, whereas NCAM140 and NCAM120 exhibited smaller or no deterioration, respectively. Interestingly, the extent of synaptic marker reduction correlated with AT8-positive tau levels, with tau pathology stochastically found in CA1 neurons and their dendrites. The decline in synaptic components was also reflected in the size of evoked postsynaptic currents recorded from CA1 pyramidals, which exhibited a severe and selective reduction. The identified indicators of blast-mediated synaptopathy point to the need for early biomarkers of explosives altering synaptic integrity with links to dementia risk, to advance strategies for both cognitive health and therapeutic monitoring.
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Affiliation(s)
- Michael F. Almeida
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Thuvan Piehler
- U.S. Army Research LaboratoryAberdeen Proving GroundMDUSA
| | - Kelly E. Carstens
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
- Present address:
Center for Computational Toxicology and ExposureU.S. Environmental Protection AgencyResearch Triangle ParkNCUSA
| | - Meilan Zhao
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
| | - Mahsa Samadi
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
- Present address:
Faculty of Medicine CentreImperial College LondonLondonUK
| | - Serena M. Dudek
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
| | - Christopher J. Norton
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Catherine M. Parisian
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Karen L.G. Farizatto
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Ben A. Bahr
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
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Parks EE, Logan S, Yeganeh A, Farley JA, Owen DB, Sonntag WE. Interleukin 6 reduces allopregnanolone synthesis in the brain and contributes to age-related cognitive decline in mice. J Lipid Res 2020; 61:1308-1319. [PMID: 32669383 PMCID: PMC7529050 DOI: 10.1194/jlr.ra119000479] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Cognitive decline with age is a harmful process that can reduce quality of life. Multiple factors have been established to contribute to cognitive decline, but the overall etiology remains unknown. Here, we hypothesized that cognitive dysfunction is mediated, in part, by increased levels of inflammatory cytokines that alter allopregnanolone (AlloP) levels, an important neurosteroid in the brain. We assessed the levels and regulation of AlloP and the effects of AlloP supplementation on cognitive function in 4-month-old and 24-month-old male C57BL/6 mice. With age, the expression of enzymes involved in the AlloP synthetic pathway was decreased and corticosterone (CORT) synthesis increased. Supplementation of AlloP improved cognitive function. Interestingly, interleukin 6 (IL-6) infusion in young animals significantly reduced the production of AlloP compared with controls. It is notable that inhibition of IL-6 with its natural inhibitor, soluble membrane glycoprotein 130, significantly improved spatial memory in aged mice. These findings were supported by in vitro experiments in primary murine astrocyte cultures, indicating that IL-6 decreases production of AlloP and increases CORT levels. Our results indicate that age-related increases in IL-6 levels reduce progesterone substrate availability, resulting in a decline in AlloP levels and an increase in CORT. Furthermore, our results indicate that AlloP is a critical link between inflammatory cytokines and the age-related decline in cognitive function.
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Affiliation(s)
- Eileen E Parks
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Sreemathi Logan
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Department of Rehabilitation Sciences, College of Allied Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Alexander Yeganeh
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Julie A Farley
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Daniel B Owen
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - William E Sonntag
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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6
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Sullivan CS, Mohan V, Manis PB, Moy SS, Truong Y, Duncan BW, Maness PF. Developmental Regulation of Basket Interneuron Synapses and Behavior through NCAM in Mouse Prefrontal Cortex. Cereb Cortex 2020; 30:4689-4707. [PMID: 32249896 DOI: 10.1093/cercor/bhaa074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 02/07/2019] [Indexed: 02/07/2023] Open
Abstract
Parvalbumin (PV)-expressing basket interneurons in the prefrontal cortex (PFC) regulate pyramidal cell firing, synchrony, and network oscillations. Yet, it is unclear how their perisomatic inputs to pyramidal neurons are integrated into neural circuitry and adjusted postnatally. Neural cell adhesion molecule NCAM is expressed in a variety of cells in the PFC and cooperates with EphrinA/EphAs to regulate inhibitory synapse density. Here, analysis of a novel parvalbumin (PV)-Cre: NCAM F/F mouse mutant revealed that NCAM functions presynaptically in PV+ basket interneurons to regulate postnatal elimination of perisomatic synapses. Mutant mice exhibited an increased density of PV+ perisomatic puncta in PFC layer 2/3, while live imaging in mutant brain slices revealed fewer puncta that were dynamically eliminated. Furthermore, EphrinA5-induced growth cone collapse in PV+ interneurons in culture depended on NCAM expression. Electrophysiological recording from layer 2/3 pyramidal cells in mutant PFC slices showed a slower rise time of inhibitory synaptic currents. PV-Cre: NCAM F/F mice exhibited impairments in working memory and social behavior that may be impacted by altered PFC circuitry. These findings suggest that the density of perisomatic synapses of PV+ basket interneurons is regulated postnatally by NCAM, likely through EphrinA-dependent elimination, which is important for appropriate PFC network function and behavior.
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Affiliation(s)
- Chelsea S Sullivan
- Department of Biochemistry and Biophysics, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Vishwa Mohan
- Department of Biochemistry and Biophysics, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Paul B Manis
- Department of Otolaryngology/Head and Neck Surgery, and Cell Biology and Physiology, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Sheryl S Moy
- Department of Psychiatry, Carolina Institute for Developmental Disabilities, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Young Truong
- Department of Biostatistics, School of Global Public Health, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Bryce W Duncan
- Department of Biochemistry and Biophysics, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Patricia F Maness
- Department of Biochemistry and Biophysics, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27599, USA
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Shi B, Luo J, Fang Y, Liu X, Rao Z, Liu R, Zeng N. Xiaoyao Pills Prevent Lipopolysaccharide-Induced Depression by Inhibiting Inflammation and Protecting Nerves. Front Pharmacol 2019; 10:1324. [PMID: 31798446 PMCID: PMC6863983 DOI: 10.3389/fphar.2019.01324] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/15/2019] [Indexed: 12/26/2022] Open
Abstract
Lipopolysaccharides are pro-inflammation mediators that can induce inflammation in the serum, hippocampus, and cortex of animals. And lipopolysaccharide-induced neuroinflammatory state resulted in significant depression-like behaviors, including reduced locomotor activity in the open field test, reduced saccharin preference, added immobility time in tail suspension test and forced swimming test, decreased comb time in the splash test, and increased latency to food in the novelty suppressed feeding test time, and reduced the levels of neurotrophic factors and synaptic proteins, and decreased Nissl bodies. Treatment with Xiaoyao Pills ameliorated the depression-like behavior, decreased the levels of inflammatory indicators, increased those of neurotrophic factors and synaptic proteins, and restored Nissl bodies. Our study suggests that lipopolysaccharides induce inflammation and nerve injury, thereby leading to depression. Xiaoyao Pills could be considered a potential therapeutic candidate for inflammation-induced depression.
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Affiliation(s)
- Boyu Shi
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
| | - Jie Luo
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
| | - Yang Fang
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
| | - Xiaobo Liu
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
| | - Zhili Rao
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
| | - Rong Liu
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
| | - Nan Zeng
- Department of Pharmacology, College of Pharmacy, Chengdu University of TCM, Chengdu, China
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Zhang L, Dong H, Si Y, Wu N, Cao H, Mei B, Meng B. miR-125b promotes tau phosphorylation by targeting the neural cell adhesion molecule in neuropathological progression. Neurobiol Aging 2019; 73:41-49. [DOI: 10.1016/j.neurobiolaging.2018.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 08/14/2018] [Accepted: 09/11/2018] [Indexed: 01/19/2023]
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Lv C, Ma Q, Han B, Li J, Geng Y, Zhang X, Wang M. Long-Term DL-3- n-Butylphthalide Treatment Alleviates Cognitive Impairment Correlate With Improving Synaptic Plasticity in SAMP8 Mice. Front Aging Neurosci 2018; 10:200. [PMID: 30026693 PMCID: PMC6041467 DOI: 10.3389/fnagi.2018.00200] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/13/2018] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease (AD) is the most prevalent form of dementia worldwide. AD is characterized by mild cognitive impairment at onset, irreversibly progressing with age to severe neurodegeneration and cognitive deficits in the late stages. Unfortunately, no effective treatments exist to prevent or delay the cognitive symptoms of AD. Studies have shown that DL-3-n-butylphthalide (DL-NBP) alleviates cognitive impairment induced by amyloid-β in mice by reducing oxidative stress, inhibiting apoptosis, and decreasing tau phosphorylation. In this study, we examined the effects of DL-NBP administration on cognitive function in the senescence-accelerated mouse prone 8 (SAMP8) model of age-related dementia. DL-NBP treatment for 3 months alleviated cognitive impairment in SAMP8 mice as assessed by performance in the Morris water maze test. Moreover, DL-NBP significantly increased the expression of synaptophysin and postsynaptic density protein 95 in the hippocampus of SAMP8 mice, indicative of a protective effect on hippocampal structural synaptic plasticity. In addition, brain-derived neurotrophic factor/tropomyosin receptor kinase B signaling, previously shown to promote synaptic plasticity, was significantly enhanced by the DL-NBP administration. Our findings suggest that DL-NBP is a potential drug candidate for the treatment of cognitive impairment in AD and may serve as the foundation for further research into the development of AD drugs.
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Affiliation(s)
- Chaonan Lv
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Qinying Ma
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Bing Han
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Jing Li
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Yuan Geng
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Xiaoman Zhang
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Mingwei Wang
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
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Rieche F, Carmine-Simmen K, Poeck B, Kretzschmar D, Strauss R. Drosophila Full-Length Amyloid Precursor Protein Is Required for Visual Working Memory and Prevents Age-Related Memory Impairment. Curr Biol 2018; 28:817-823.e3. [PMID: 29478851 DOI: 10.1016/j.cub.2018.01.077] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 12/21/2017] [Accepted: 01/26/2018] [Indexed: 01/15/2023]
Abstract
The β-amyloid precursor protein (APP) plays a central role in the etiology of Alzheimer's disease (AD). However, its normal physiological functions are still unclear. APP is cleaved by various secretases whereby sequential processing by the β- and γ-secretases produces the β-amyloid peptide that is accumulating in plaques that typify AD. In addition, this produces secreted N-terminal sAPPβ fragments and the APP intracellular domain (AICD). Alternative cleavage by α-secretase results in slightly longer secreted sAPPα fragments and the identical AICD. Whereas the AICD has been connected with transcriptional regulation, sAPPα fragments have been suggested to have a neurotrophic and neuroprotective role [1]. Moreover, expression of sAPPα in APP-deficient mice could rescue their deficits in learning, spatial memory, and long-term potentiation [2]. Loss of the Drosophila APP-like (APPL) protein impairs associative olfactory memory formation and middle-term memory that can be rescued with a secreted APPL fragment [3]. We now show that APPL is also essential for visual working memory. Interestingly, this short-term memory declines rapidly with age, and this is accompanied by enhanced processing of APPL in aged flies. Furthermore, reducing secretase-mediated proteolytic processing of APPL can prevent the age-related memory loss, whereas overexpression of the secretases aggravates the aging effect. Rescue experiments confirmed that this memory requires signaling of full-length APPL and that APPL negatively regulates the neuronal-adhesion molecule Fasciclin 2. Overexpression of APPL or one of its secreted N termini results in a dominant-negative interaction with the FASII receptor. Therefore, our results show that specific memory processes require distinct APPL products.
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Affiliation(s)
- Franziska Rieche
- Institut für Entwicklungsbiologie und Neurobiologie, Johannes Gutenberg-Universität Mainz, Colonel-Kleinmann-Weg 2, 55099 Mainz, Germany
| | - Katia Carmine-Simmen
- Oregon Institute of Occupational Health Sciences, 3181 S.W. Sam Jackson Park Road, Portland, OR 97201, USA
| | - Burkhard Poeck
- Institut für Entwicklungsbiologie und Neurobiologie, Johannes Gutenberg-Universität Mainz, Colonel-Kleinmann-Weg 2, 55099 Mainz, Germany
| | - Doris Kretzschmar
- Oregon Institute of Occupational Health Sciences, 3181 S.W. Sam Jackson Park Road, Portland, OR 97201, USA.
| | - Roland Strauss
- Institut für Entwicklungsbiologie und Neurobiologie, Johannes Gutenberg-Universität Mainz, Colonel-Kleinmann-Weg 2, 55099 Mainz, Germany.
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11
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Boadas-Vaello P, Homs J, Portero-Tresserra M, Álvarez-Pérez B, Deulofeu M, Verdú E. Graded photochemical spinal cord injury results in chronic hyperalgesia and depression-like behaviour but no anxiety exacerbation in female BALB/c mice. Neurosci Lett 2018; 664:98-106. [DOI: 10.1016/j.neulet.2017.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/29/2017] [Accepted: 11/06/2017] [Indexed: 11/27/2022]
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12
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Neural Cell Adhesion Molecules of the Immunoglobulin Superfamily Regulate Synapse Formation, Maintenance, and Function. Trends Neurosci 2017; 40:295-308. [PMID: 28359630 DOI: 10.1016/j.tins.2017.03.003] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 03/03/2017] [Accepted: 03/06/2017] [Indexed: 02/05/2023]
Abstract
Immunoglobulin superfamily adhesion molecules are among the most abundant proteins in vertebrate and invertebrate nervous systems. Prominent family members are the neural cell adhesion molecules NCAM and L1, which were the first to be shown to be essential not only in development but also in synaptic function and as key regulators of synapse formation, synaptic activity, plasticity, and synaptic vesicle recycling at distinct developmental and activity stages. In addition to interacting with each other, adhesion molecules interact with ion channels and cytokine and neurotransmitter receptors. Mutations in their genes are linked to neurological disorders associated with abnormal development and synaptic functioning. This review presents an overview of recent studies on these molecules and their crucial impact on neurological disorders.
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Rekik K, Francés B, Valet P, Dray C, Florian C. Cognitive deficit in hippocampal-dependent tasks in Werner syndrome mouse model. Behav Brain Res 2017; 323:68-77. [PMID: 28119126 DOI: 10.1016/j.bbr.2017.01.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/16/2017] [Accepted: 01/18/2017] [Indexed: 12/20/2022]
Abstract
Mammalian aging is often characterized by metabolic disturbances, cognitive declines and DNA repairs deficiency, but the underlying molecular mechanisms are still not well understood. Alterations in DNA repair can significantly exacerbate aging. Mammalian neuronal cells which accumulate unrepaired DNA damage over time could potentially lead to brain functions disorders. Focusing on the ATP-dependent RecQ-type DNA helicase, an enzyme involved in repair of double strand DNA, a mouse model of Werner syndrome (WS) had been proposed as a model of accelerated aging. Until now, no study has investigated the impact of this premature aging syndrome on learning and memory. Spatial memory and cognitive flexibility are particularly affected by the aging process in both men and rodents. Studies have shown that aged mice exhibited similar performance than young adult mice on non-hippocampus dependent memory whereas their performances were decreased in hippocampus-dependent tasks. In this study, we have submitted 3, 5 and 8 month-old WS mice to several behavioral paradigms to evaluate hippocampus-dependent (spatial object location, Morris water maze and fear conditioning) and non hippocampus-dependent (object recognition) memories. No effect on the locomotion activity and anxiety level has been observed in adult WS mice. Interestingly, the 8 month-old WS mice exhibit long-term memory impairment similar to aged mice, suggesting that adult WS mice do develop some aspects of cognitive aging.
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Affiliation(s)
- Khaoula Rekik
- Université de Toulouse, France; Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), CNRS, UPS,118 route de Narbonne, F-31062 Toulouse, Cedex 9, France
| | - Bernard Francés
- Université de Toulouse, France; Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), CNRS, UPS,118 route de Narbonne, F-31062 Toulouse, Cedex 9, France
| | - Philippe Valet
- Université de Toulouse, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, UPS, Toulouse, France
| | - Cédric Dray
- Université de Toulouse, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, UPS, Toulouse, France
| | - Cédrick Florian
- Université de Toulouse, France; Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), CNRS, UPS,118 route de Narbonne, F-31062 Toulouse, Cedex 9, France.
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Gulisano W, Bizzoca A, Gennarini G, Palmeri A, Puzzo D. Role of the adhesion molecule F3/Contactin in synaptic plasticity and memory. Mol Cell Neurosci 2016; 81:64-71. [PMID: 28038945 DOI: 10.1016/j.mcn.2016.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 12/07/2016] [Accepted: 12/22/2016] [Indexed: 12/14/2022] Open
Abstract
Cell adhesion molecules (CAMs) have a pivotal role in building and maintaining synaptic structures during brain development participating in axonal elongation and pathfinding, glial guidance of neuronal migration, as well as myelination. CAMs expression persists in the adult brain particularly in structures undergoing postnatal neurogenesis and involved in synaptic plasticity and memory as the hippocampus. Among the neural CAMs, we have recently focused on F3/Contactin, a glycosylphosphatidyl inositol-anchored glycoprotein belonging to the immunoglobulin superfamily, involved in neuronal development, synaptic maintenance and organization of neuronal networks. Here, we discuss our recent data suggesting that F3/Contactin exerts a role in hippocampal synaptic plasticity and memory in adult and aged mice. In particular, we have studied long-term potentiation (LTP), spatial and object recognition memory, and phosphorylation of the transcription factor cAMP-Responsive-Element Binding protein (CREB) in a transgenic mouse model of F3/Contactin overexpression. We also investigated whether F3/Contactin might influence neuronal apoptosis and the production of amyloid-beta peptide (Aβ), known to be one of the main pathogenetic hallmarks of Alzheimer's disease (AD). In conclusion, a further understanding of F3/Contactin role in synaptic plasticity and memory might have interesting clinical outcomes in cognitive disorders, such as aging and AD, offering innovative therapeutic opportunities.
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Affiliation(s)
- Walter Gulisano
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Antonella Bizzoca
- Section of Physiology, Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, Bari, Italy
| | - Gianfranco Gennarini
- Section of Physiology, Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, Bari, Italy
| | - Agostino Palmeri
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
| | - Daniela Puzzo
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
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Regulation of extrasynaptic signaling by polysialylated NCAM: Impact for synaptic plasticity and cognitive functions. Mol Cell Neurosci 2016; 81:12-21. [PMID: 27865768 DOI: 10.1016/j.mcn.2016.11.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/10/2016] [Accepted: 11/11/2016] [Indexed: 01/24/2023] Open
Abstract
The activation of synaptic N-methyl-d-aspartate-receptors (NMDARs) is crucial for induction of synaptic plasticity and supports cell survival, whereas activation of extrasynaptic NMDARs inhibits long-term potentiation and triggers neurodegeneration. A soluble polysialylated form of the neural cell adhesion molecule (polySia-NCAM) suppresses signaling through peri-/extrasynaptic GluN2B-containing NMDARs. Genetic or enzymatic manipulations blocking this mechanism result in impaired synaptic plasticity and learning, which could be repaired by reintroduction of polySia, or inhibition of either GluN1/GluN2B receptors or downstream signaling through RasGRF1 and p38 MAP kinase. Ectodomain shedding of NCAM, and hence generation of soluble NCAM, is controlled by metalloproteases of a disintegrin and metalloprotease (ADAM) family. As polySia-NCAM is predominantly associated with GABAergic interneurons in the prefrontal cortex, it is noteworthy that EphrinA5/EphA3-induced ADAM10 activity promotes polySia-NCAM shedding in these neurons. Thus, in addition to the well-known regulation of synaptic NMDARs by the secreted molecule Reelin, shed polySia-NCAM may restrain activation of extrasynaptic NMDARs. These data support a concept that GABAergic interneuron-derived extracellular proteins control the balance in synaptic/extrasynaptic NMDAR-mediated signaling in principal cells. Strikingly, dysregulation of Reelin or polySia expression is linked to schizophrenia. Thus, targeting of the GABAergic interneuron-principle cell communication and restoring the balance in synaptic/extrasynaptic NMDARs represent promising strategies for treatment of psychiatric diseases.
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Tian X, Liu Y, Ren G, Yin L, Liang X, Geng T, Dang H, An R. Resveratrol limits diabetes-associated cognitive decline in rats by preventing oxidative stress and inflammation and modulating hippocampal structural synaptic plasticity. Brain Res 2016; 1650:1-9. [DOI: 10.1016/j.brainres.2016.08.032] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 08/21/2016] [Accepted: 08/22/2016] [Indexed: 12/15/2022]
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Benítez-Burraco A, Lattanzi W, Murphy E. Language Impairments in ASD Resulting from a Failed Domestication of the Human Brain. Front Neurosci 2016; 10:373. [PMID: 27621700 PMCID: PMC5002430 DOI: 10.3389/fnins.2016.00373] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/02/2016] [Indexed: 11/16/2022] Open
Abstract
Autism spectrum disorders (ASD) are pervasive neurodevelopmental disorders entailing social and cognitive deficits, including marked problems with language. Numerous genes have been associated with ASD, but it is unclear how language deficits arise from gene mutation or dysregulation. It is also unclear why ASD shows such high prevalence within human populations. Interestingly, the emergence of a modern faculty of language has been hypothesized to be linked to changes in the human brain/skull, but also to the process of self-domestication of the human species. It is our intention to show that people with ASD exhibit less marked domesticated traits at the morphological, physiological, and behavioral levels. We also discuss many ASD candidates represented among the genes known to be involved in the “domestication syndrome” (the constellation of traits exhibited by domesticated mammals, which seemingly results from the hypofunction of the neural crest) and among the set of genes involved in language function closely connected to them. Moreover, many of these genes show altered expression profiles in the brain of autists. In addition, some candidates for domestication and language-readiness show the same expression profile in people with ASD and chimps in different brain areas involved in language processing. Similarities regarding the brain oscillatory behavior of these areas can be expected too. We conclude that ASD may represent an abnormal ontogenetic itinerary for the human faculty of language resulting in part from changes in genes important for the “domestication syndrome” and, ultimately, from the normal functioning of the neural crest.
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Affiliation(s)
| | - Wanda Lattanzi
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore Rome, Italy
| | - Elliot Murphy
- Division of Psychology and Language Sciences, University College London London, UK
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Murphy E, Benítez-Burraco A. Language deficits in schizophrenia and autism as related oscillatory connectomopathies: An evolutionary account. Neurosci Biobehav Rev 2016; 83:742-764. [PMID: 27475632 DOI: 10.1016/j.neubiorev.2016.07.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/23/2016] [Accepted: 07/25/2016] [Indexed: 01/28/2023]
Abstract
Schizophrenia (SZ) and autism spectrum disorders (ASD) are characterised by marked language deficits, but it is not clear how these arise from gene mutations associated with the disorders. Our goal is to narrow the gap between SZ and ASD and, ultimately, give support to the view that they represent abnormal (but related) ontogenetic itineraries for the human faculty of language. We will focus on the distinctive oscillatory profiles of the SZ and ASD brains, in turn using these insights to refine our understanding of how the brain implements linguistic computations by exploring a novel model of linguistic feature-set composition. We will argue that brain rhythms constitute the best route to interpreting language deficits in both conditions and mapping them to neural dysfunction and risk alleles of the genes. Importantly, candidate genes for SZ and ASD are overrepresented among the gene sets believed to be important for language evolution. This translational effort may help develop an understanding of the aetiology of SZ and ASD and their high prevalence among modern populations.
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Affiliation(s)
- Elliot Murphy
- Division of Psychology and Language Sciences, University College London, London, United Kingdom.
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Pan W, Han S, Kang L, Li S, Du J, Cui H. Effects of dihydrotestosterone on synaptic plasticity of the hippocampus in mild cognitive impairment male SAMP8 mice. Exp Ther Med 2016; 12:1455-1463. [PMID: 27588067 PMCID: PMC4997989 DOI: 10.3892/etm.2016.3470] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 06/21/2016] [Indexed: 01/03/2023] Open
Abstract
The current study focused on how dihydrotestosterone (DHT) regulates synaptic plasticity in the hippocampus of mild cognitive impairment male senescence-accelerated mouse prone 8 (SAMP8) mice. Five-month-old SAMP8 mice were divided into the control, castrated and castrated-DHT groups, in which the mice were castrated and treated with physiological doses of DHT for a period of 2 months. To determine the regulatory mechanisms of DHT in the cognitive capacity, the effects of DHT on the morphology of the synapse and the expression of synaptic marker proteins in the hippocampus were investigated using immunohistochemistry, qPCR and western blot analysis. The results showed that the expression of cAMP-response element binding protein (CREB), postsynaptic density protein 95 (PSD95), synaptophysin (SYN) and developmentally regulated brain protein (Drebrin) was reduced in the castrated group compared to the control group. However, DHT promoted the expression of CREB, PSD95, SYN and Drebrin in the hippocampus of the castrated-DHT group. Thus, androgen depletion impaired the synaptic plasticity in the hippocampus of SAMP8 and accelerated the development of Alzheimer's disease (AD)-like neuropathology, suggesting that a similar mechanism may underlie the increased risk for AD in men with low testosterone. In addition, DHT regulated synaptic plasticity in the hippocampus of mild cognitive impairment (MCI) SAMP8 mice and delayed the progression of disease to Alzheimer's dementia. In conclusion, androgen-based hormone therapy is a potentially useful strategy for preventing the progression of MCI in aging men. Androgens enhance synaptic markers (SYN, PSD95, and Drebrin), activate CREB, modulate the fundamental biology of synaptic structure, and lead to the structural changes of plasticity in the hippocampus, all of which result in improved cognitive function.
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Affiliation(s)
- Wensen Pan
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Department of Respiration Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Shuo Han
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Lin Kang
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Sha Li
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Juan Du
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Huixian Cui
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Hebei Key Laboratory for Brain Aging and Cognitive Neuroscience, Shijiazhuang, Hebei 050031, P.R. China
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Chen C, Meng SQ, Xue YX, Han Y, Sun CY, Deng JH, Chen N, Bao YP, Zhang FL, Cao LL, Zhu WG, Shi J, Song WH, Lu L. Epigenetic modification of PKMζ rescues aging-related cognitive impairment. Sci Rep 2016; 6:22096. [PMID: 26926225 PMCID: PMC4772003 DOI: 10.1038/srep22096] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 02/05/2016] [Indexed: 12/18/2022] Open
Abstract
Cognition is impacted by aging. However, the mechanisms that underlie aging-associated cognitive impairment are unclear. Here we showed that cognitive decline in aged rats was associated with changes in DNA methylation of protein kinase Mζ (PKMζ) in the prelimbic cortex (PrL). PKMζ is a crucial molecule involved in the maintenance of long-term memory. Using different behavioral models, we confirmed that aged rats exhibited cognitive impairment in memory retention test 24 h after training, and overexpression of PKMζ in the PrL rescued cognitive impairment in aged rats. After fear conditioning, the protein levels of PKMζ and the membrane expression of GluR2 increased in the PrL in young and adult rats but not in aged rats, and the levels of methylated PKMζ DNA in the PrL decreased in all age groups, whereas the levels of unmethylated PKMζ DNA increased only in young and adult rats. We also found that environmentally enriched housing reversed the hypermethylation of PKMζ and restored cognitive performance in aged rats. Inactivation of PKMζ prevented the potentiating effects of environmental enrichment on memory retention in aged rats. These results indicated that PKMζ might be a potential target for the treatment of aging-related cognitive impairment, suggesting a potential therapeutic avenue.
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Affiliation(s)
- Chen Chen
- Institute of Mental Health, Peking University Sixth Hospital, and Key Laboratory of Mental Health, Beijing 100191, China.,National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Shi-Qiu Meng
- Institute of Mental Health, Peking University Sixth Hospital, and Key Laboratory of Mental Health, Beijing 100191, China.,National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Yan-Xue Xue
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Ying Han
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Cheng-Yu Sun
- Institute of Mental Health, Peking University Sixth Hospital, and Key Laboratory of Mental Health, Beijing 100191, China.,National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Jia-Hui Deng
- Institute of Mental Health, Peking University Sixth Hospital, and Key Laboratory of Mental Health, Beijing 100191, China.,National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Na Chen
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Yan-Ping Bao
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Fei-Long Zhang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Lin-Lin Cao
- Department of Biochemistry and Molecular Biology, Peking University Health Science Center, Beijing 100191, China
| | - Wei-Guo Zhu
- Department of Biochemistry and Molecular Biology, Peking University Health Science Center, Beijing 100191, China
| | - Jie Shi
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China
| | - Wei-Hong Song
- Brain Research Centre, Departments of Medicine and Psychiatry, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Lin Lu
- Institute of Mental Health, Peking University Sixth Hospital, and Key Laboratory of Mental Health, Beijing 100191, China.,National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing 100191, China.,Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
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21
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Luke MPS, LeVatte TL, O'Reilly AM, Smith BJ, Tremblay F, Brown RE, Clarke DB. Effect of NCAM on aged-related deterioration in vision. Neurobiol Aging 2016; 41:93-106. [PMID: 27103522 DOI: 10.1016/j.neurobiolaging.2016.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 01/22/2016] [Accepted: 02/04/2016] [Indexed: 01/14/2023]
Abstract
The neural cell adhesion molecule (NCAM) is involved in developmental processes and age-associated cognitive decline; however, little is known concerning the effects of NCAM in the visual system during aging. Using anatomical, electrophysiological, and behavioral assays, we analyzed age-related changes in visual function of NCAM deficient (-/-) and wild-type mice. Anatomical analyses indicated that aging NCAM -/- mice had fewer retinal ganglion cells, thinner retinas, and fewer photoreceptor cell layers than age-matched controls. Electroretinogram testing of retinal function in young adult NCAM -/- mice showed a 2-fold increase in a- and b-wave amplitude compared with wild-type mice, but the retinal activity dropped dramatically to control levels when the animals reached 10 months. In behavioral tasks, NCAM -/- mice had no visual pattern discrimination ability and showed premature loss of vision as they aged. Together, these findings demonstrate that NCAM plays significant roles in the adult visual system in establishing normal retinal anatomy, physiology and function, and in maintaining vision during aging.
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Affiliation(s)
- Margaret Po-Shan Luke
- Department of Medical Neuroscience, Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Terry L LeVatte
- Department of Medical Neuroscience, Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Amanda M O'Reilly
- Department of Medical Neuroscience, Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Benjamin J Smith
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - François Tremblay
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Ophthalmology and Visual Sciences, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Richard E Brown
- Department of Psychology and Neuroscience, Life Science Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - David B Clarke
- Department of Medical Neuroscience, Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Surgery (Neurosurgery), Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Medicine (Endocrinology), Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Ophthalmology & Visual Sciences, Life Science Research Institute, Dalhousie University, Halifax, Nova Scotia, Canada.
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Zhang ZC, Luan F, Xie CY, Geng DD, Wang YY, Ma J. Low-frequency transcranial magnetic stimulation is beneficial for enhancing synaptic plasticity in the aging brain. Neural Regen Res 2015. [PMID: 26199608 PMCID: PMC4498353 DOI: 10.4103/1673-5374.158356] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
In the aging brain, cognitive function gradually declines and causes a progressive reduction in the structural and functional plasticity of the hippocampus. Transcranial magnetic stimulation is an emerging and novel neurological and psychiatric tool used to investigate the neurobiology of cognitive function. Recent studies have demonstrated that low-frequency transcranial magnetic stimulation (≤1 Hz) ameliorates synaptic plasticity and spatial cognitive deficits in learning-impaired mice. However, the mechanisms by which this treatment improves these deficits during normal aging are still unknown. Therefore, the current study investigated the effects of transcranial magnetic stimulation on the brain-derived neurotrophic factor signal pathway, synaptic protein markers, and spatial memory behavior in the hippocampus of normal aged mice. The study also investigated the downstream regulator, Fyn kinase, and the downstream effectors, synaptophysin and growth-associated protein 43 (both synaptic markers), to determine the possible mechanisms by which transcranial magnetic stimulation regulates cognitive capacity. Transcranial magnetic stimulation with low intensity (110% average resting motor threshold intensity, 1 Hz) increased mRNA and protein levels of brain-derived neurotrophic factor, tropomyosin receptor kinase B, and Fyn in the hippocampus of aged mice. The treatment also upregulated the mRNA and protein expression of synaptophysin and growth-associated protein 43 in the hippocampus of these mice. In conclusion, brain-derived neurotrophic factor signaling may play an important role in sustaining and regulating structural synaptic plasticity induced by transcranial magnetic stimulation in the hippocampus of aging mice, and Fyn may be critical during this regulation. These responses may change the structural plasticity of the aging hippocampus, thereby improving cognitive function.
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Affiliation(s)
- Zhan-Chi Zhang
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Feng Luan
- Department of Otorhinolaryngology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Chun-Yan Xie
- Second Surgical Department, Qinghe Public Hospital of Hebei Province, Xingtai, Hebei Province, China
| | - Dan-Dan Geng
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Yan-Yong Wang
- Department of Neurology, First Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China ; Hebei Key Laboratory for Brain Aging and Cognitive Neuroscience, Shijiazhuang, Hebei Province, China
| | - Jun Ma
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei Province, China ; Hebei Key Laboratory for Brain Aging and Cognitive Neuroscience, Shijiazhuang, Hebei Province, China
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Benítez-Burraco A, Boeckx C. Possible functional links among brain- and skull-related genes selected in modern humans. Front Psychol 2015; 6:794. [PMID: 26136701 PMCID: PMC4468360 DOI: 10.3389/fpsyg.2015.00794] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 05/26/2015] [Indexed: 12/12/2022] Open
Abstract
The sequencing of the genomes from extinct hominins has revealed that changes in some brain-related genes have been selected after the split between anatomically-modern humans and Neanderthals/Denisovans. To date, no coherent view of these changes has been provided. Following a line of research we initiated in Boeckx and Benítez-Burraco (2014a), we hypothesize functional links among most of these genes and their products, based on the existing literature for each of the gene discussed. The genes we focus on are found mutated in different cognitive disorders affecting modern populations and their products are involved in skull and brain morphology, and neural connectivity. If our hypothesis turns out to be on the right track, it means that the changes affecting most of these proteins resulted in a more globular brain and ultimately brought about modern cognition, with its characteristic generativity and capacity to form and exploit cross-modular concepts, properties most clearly manifested in language.
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Affiliation(s)
| | - Cedric Boeckx
- Catalan Institute for Research and Advanced Studies , Barcelona, Spain ; Department of Linguistics, Universitat de Barcelona , Barcelona, Spain
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24
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Puzzo D, Bizzoca A, Loreto C, Guida CA, Gulisano W, Frasca G, Bellomo M, Castorina S, Gennarini G, Palmeri A. Role of F3/contactin expression profile in synaptic plasticity and memory in aged mice. Neurobiol Aging 2015; 36:1702-1715. [PMID: 25659859 DOI: 10.1016/j.neurobiolaging.2015.01.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 12/30/2014] [Accepted: 01/03/2015] [Indexed: 12/14/2022]
Abstract
We have recently shown that overexpression of the F3/contactin adhesive glycoprotein (also known as Contactin-1) promotes neurogenesis in adult hippocampus, which correlates with improved synaptic plasticity and memory. Because F3/contactin levels physiologically decrease with age, here, we aim at investigating whether its overexpression might counteract the cognitive decline in aged animals. For this we use 20- to 24-month-old TAG/F3 transgenic mice in which F3/contactin overexpression is driven by regulatory sequences from the gene encoding the transient axonal glycoprotein TAG-1 throughout development. We show that aged TAG/F3 mice display improved hippocampal long-term potentiation and memory compared with wild-type littermates. The same mice undergo a decrease of neuronal apoptosis at the hippocampal level, which correlated to a decrease of active caspase-3; by contrast, procaspase-3 and Bax as well as the anti-apoptotic and plasticity-related pathway BDNF/CREB/Bcl-2 were rather increased. Interestingly, amyloid-precursor protein processing was shifted toward sAPPα generation, with a decrease of sAPPβ and amyloid-beta levels. Our data confirm that F3/contactin plays a role in hippocampal synaptic plasticity and memory also in aged mice, suggesting that it acts on molecular pathways related to apoptosis and amyloid-beta production.
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Affiliation(s)
- Daniela Puzzo
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Antonella Bizzoca
- Section of Physiology, Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, Bari, Italy
| | - Carla Loreto
- Section of Anatomy, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Chiara A Guida
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Walter Gulisano
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giuseppina Frasca
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Maria Bellomo
- Faculty of Psychology and Educational Sciences, University "Kore", Enna, Italy
| | - Sergio Castorina
- Section of Anatomy, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Gianfranco Gennarini
- Section of Physiology, Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, Bari, Italy.
| | - Agostino Palmeri
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
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25
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Boeckx C, Benítez-Burraco A. Globularity and language-readiness: generating new predictions by expanding the set of genes of interest. Front Psychol 2014; 5:1324. [PMID: 25505436 PMCID: PMC4243498 DOI: 10.3389/fpsyg.2014.01324] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 10/31/2014] [Indexed: 12/30/2022] Open
Abstract
This study builds on the hypothesis put forth in Boeckx and Benítez-Burraco (2014), according to which the developmental changes expressed at the levels of brain morphology and neural connectivity that resulted in a more globular braincase in our species were crucial to understand the origins of our language-ready brain. Specifically, this paper explores the links between two well-known 'language-related' genes like FOXP2 and ROBO1 implicated in vocal learning and the initial set of genes of interest put forth in Boeckx and Benítez-Burraco (2014), with RUNX2 as focal point. Relying on the existing literature, we uncover potential molecular links that could be of interest to future experimental inquiries into the biological foundations of language and the testing of our initial hypothesis. Our discussion could also be relevant for clinical linguistics and for the interpretation of results from paleogenomics.
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Affiliation(s)
- Cedric Boeckx
- Catalan Institute for Advanced Studies and Research (ICREA)Barcelona, Spain
- Department of Linguistics, Universitat de BarcelonaBarcelona, Spain
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26
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Repetitive transcranial magnetic stimulation (rTMS) influences spatial cognition and modulates hippocampal structural synaptic plasticity in aging mice. Exp Gerontol 2014; 58:256-68. [DOI: 10.1016/j.exger.2014.08.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 07/27/2014] [Accepted: 08/26/2014] [Indexed: 01/09/2023]
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Brandewiede J, Stork O, Schachner M. NCAM deficiency in the mouse forebrain impairs innate and learned avoidance behaviours. GENES, BRAIN, AND BEHAVIOR 2014; 13:468-77. [PMID: 24751161 DOI: 10.1111/gbb.12138] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 01/04/2014] [Accepted: 04/16/2014] [Indexed: 02/05/2023]
Abstract
The neural cell adhesion molecule (NCAM) has been implicated in the development and plasticity of neural circuits and the control of hippocampus- and amygdala-dependent learning and behaviour. Previous studies in constitutive NCAM null mutants identified emotional behaviour deficits related to disturbances of hippocampal and amygdala functions. Here, we studied these behaviours in mice conditionally deficient in NCAM in the postmigratory forebrain neurons. We report deficits in both innate and learned avoidance behaviours, as observed in elevated plus maze and passive avoidance tasks. In contrast, general locomotor activity, trait anxiety or neophobia were unaffected by the mutation. Altered avoidance behaviour of the conditional NCAM mutants was associated with a deficit in serotonergic signalling, as indicated by their reduced responsiveness to (±)-8-hydroxy-2-(dipropylamino)-tetralin-induced hypothermia. Another serotonin-dependent behaviour, namely intermale aggression that is massively increased in constitutively NCAM-deficient mice, was not affected in the forebrain-specific mutants. Our data suggest that genetically or environmentally induced changes of NCAM expression in the late postnatal and mature forebrain determine avoidance behaviour and serotonin (5-HT)1A receptor signalling.
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Affiliation(s)
- J Brandewiede
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, Universität Hamburg, Hamburg
| | - O Stork
- Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University
- Center for Behavioural Brain Sciences, Magdeburg, Germany
| | - M Schachner
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, Universität Hamburg, Hamburg
- Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, USA
- Center for Neuroscience, Shantou University Medical College, Shantou, China
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28
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Kucherenko MM, Shcherbata HR. Steroids as external temporal codes act via microRNAs and cooperate with cytokines in differential neurogenesis. Fly (Austin) 2013; 7:173-83. [PMID: 23839338 PMCID: PMC4049850 DOI: 10.4161/fly.25241] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The generation of neuronal cell diversity is controlled by interdependent mechanisms, including cell intrinsic programs and environmental cues. During development, the astonishing variety of neurons is originated according to a precise timetable that is managed by a complex network of genes specifying individual types of neurons. Different neurons express specific sets of transcription factors, and they can be recognized by morphological characteristics and spatial localization, but, most importantly, they connect to each other and form functional units in a stereotyped fashion. This connectivity depends, mostly, on selective cell adhesion that is strictly regulated. While intrinsic factors specifying neuronal temporal identity have been extensively studied, an extrinsic temporal factor controlling neuronal temporal identity switch has not been shown. Our data demonstrate that pulses of steroid hormone act as a temporal cue to fine-tune neuronal cell differentiation. Here we also provide evidence that extrinsic JAK/STAT cytokine signaling acts as a spatial code in the process. Particularly, in Drosophila mushroom bodies, neuronal identity transition is controlled by steroid-dependent microRNAs that regulate spatially distributed cytokine-dependent signaling factors that in turn modulate cell adhesion. A new era of neuronal plasticity assessment via managing external temporal cues such as hormones and cytokines that specify individual types of neurons might open new possibilities for brain regenerative therapeutics.
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Affiliation(s)
- Mariya M Kucherenko
- Max Planck Research Group of Gene Expression and Signaling; Max Planck Institute for Biophysical Chemistry; Goettingen, Germany
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