Regulation of inhibitory interneuron development
Regulation of inhibitory interneuron development
批准号:
9762394
负责人:
Janghoo Lim
金额:
$25.13万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2019
资助国家:
美国
项目状态:
已结题
起止时间:
2019-03-01 至 2021-01-31
关键词:
AdultAffectAnatomyAnimal ModelBehavioralBiochemicalBiological AssayBiological ProcessBrainBrain DiseasesCell CountCell ProliferationComplexCorpus striatum structureDataDefectDevelopmentEmbryoEmbryonic DevelopmentEquilibriumFoundationsFunctional disorderFutureGangliaGenerationsGoalsHistologicHomologous GeneHumanImpairmentInterneuron functionInterneuronsKnockout MiceKnowledgeLateralLeadLinkMaintenanceMedialMental DepressionMental disordersMolecularMolecular AnalysisMolecular and Cellular BiologyMusNeurodevelopmental DisorderNeurologicNeuronsOutputPathogenesisPathway interactionsPatternPlayProcessProductionProsencephalonProtein-Serine-Threonine KinasesRegulationRegulatory PathwayResearchResolutionRoleSchizophreniaSignal PathwayStem cellsTestingTissuesTreatment Efficacyautism spectrum disorderbasecell growtheffective therapyexcitatory neuronimprovedin vivoinhibitory neuroninsightnemo-like kinasenerve stem cellneural circuitneurodevelopmentneurogenesisneuron developmentneuropsychiatric disorderneuropsychiatryneuroregulationnovelrecombinase-mediated cassette exchangesubventricular zone
中文摘要
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英文摘要
The human brain consists of over one hundred billion neurons assembled into functional neural circuits, which
underlie all sophisticated brain functions. A precise balance between neuronal excitation and inhibition is
required for proper brain function, and the imbalance between them leads to various types of behavioral and
neurological problems including many complex brain disorders, such as schizophrenia, depression, and
autism. Regulatory mechanisms for excitatory and inhibitory neuron formation have been studied in great
detail, but those mechanisms regulating inhibitory interneurons are still being elucidated. The overarching goal
of this project is to better understand the regulatory pathways underlying inhibitory interneuron formation with
the hope that such insight will lead to the better understanding of complex brain disorders and the development
of effective therapeutics. In order to reach this goal, we began by identifying factors that could potentially affect
the development of the embryonic ganglionic eminences (GE), a ventral forebrain region where inhibitory
interneurons are born. We rationalized that such factors should be expressed in the GE and regulate signaling
pathways essential for controlling neurogenesis. Our initial studies reveal that Nemo-like kinase (NLK), an
evolutionarily conserved serine/threonine kinase, satisfies these criteria. We have found that Nlk (mouse
homologue of NLK) is specifically expressed in different regions of the GE, and loss of Nlk in mice causes a dramatic increase in the proliferation of neural progenitor cells and impairment of their differentiation into
mature inhibitory interneurons. Based on these preliminary studies, we hypothesize that Nlk plays a
fundamental role in the development of inhibitory interneurons. To investigate this idea, we propose the
following two major aims. In Aim 1, we will determine the role of Nlk in the control of neural progenitor cell
proliferation in the mouse GE. We will investigate specifically when, and how, Nlk influences progenitor cell
number in specific regions of the GE. In Aim 2, we will examine if Nlk is required for the proper differentiation and maintenance of specific subtypes of inhibitory interneurons in the cortex and striatum during embryonic and adult stages. We believe that the knowledge gained from the studies proposed in this application will fundamentally advance our understanding of the regulatory mechanisms of normal inhibitory interneuron formation, and thus provide insights into the relevance of this important process to understanding the pathogenesis of complex brain disorders.
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海外基金