Project 1: Brain steroid receptor coactivators and energy homeostasis
Project 1: Brain steroid receptor coactivators and energy homeostasis
批准号:
10153760
负责人:
YONG XU
金额:
$31.7万
依托单位国家:
美国
项目类别:
财政年份:
2018
资助国家:
美国
项目状态:
已结题
起止时间:
2018-07-01 至 2023-04-30
关键词:
AblationAdipose tissueAge of OnsetAnimal ModelAnorexiaAttenuatedBiochemicalBody WeightBody mass indexBrainBrain regionCRISPR/Cas technologyCharacteristicsChildChronicClustered Regularly Interspaced Short Palindromic RepeatsCodeComplexCuesCultured CellsDNA Sequence AlterationDevelopmentDietDissociationEatingEnergy IntakeEnergy MetabolismEnsureEquilibriumEstrogen Receptor alphaFOXO1A geneFastingFatty acid glycerol estersFeeding behaviorsGenesGenetic TranscriptionGlucoseHigh Fat DietHomeostasisHourHumanHyperphagiaHypothalamic structureImpairmentIndividualInsulinKnock-in MouseLeptinLiverLocomotionMediatingMediator of activation proteinMetabolicMetabolismModelingMolecularMusMutant Strains MiceMutationNeuronsNuclear ReceptorsNutritionalObesityPPAR gammaPathway interactionsPeripheralPhasePropertyProteinsRegimenReservationsRoleSignal TransductionSignaling MoleculeStat3 proteinSteroid ReceptorsSystemTechnologyTestingThyroid Hormone ReceptorTimeTissuesUniversitiesWeight Gaincohortdiet-induced obesityenergy balanceexhibitionsfeedinginsulin sensitivitymetabolic phenotypemind controlmouse modelmutantnew therapeutic targetnovelnovel therapeuticsnuclear receptor coactivator 1obesity preventionobesity treatmentoverexpressionpreventprogramsresponsesevere early onset obesitytranscription factortranscriptome
中文摘要
项目1 -项目概要
许多核受体(NR)或转录因子(TF)已被鉴定为细胞增殖的重要调节因子。
体重然而,单独针对这些单个分子的抗肥胖症方案远不能令人满意。
共激活因子与广泛的NR/TF相互作用,并且可以充当协调和调节细胞内的细胞因子的主调节因子。
多种代谢信号协同作用。高水平的类固醇受体辅激活因子-SRC-CRP 1和-CRP 2(SRC-CRP 1和SRC-CRP 2)
SRC-E2)在下丘脑中表达,下丘脑是控制进食和体重平衡的关键大脑区域。
初步观察导致了下丘脑SRC-B11和SRC-B12共激活STAT 3和FoxO 1的假设,
分别提供能量代谢的协调控制。 目的1将确定下丘脑是否
SRC-STAT 1通过调控STAT 3转录活性介导瘦素的抗肥胖作用.缺乏小鼠模型
或仅在瘦素-β反应性神经元中过表达SRC-β 1。 代谢参数
在这些小鼠中评估对不同饮食或瘦素治疗的反应。 重要的是,
将描述SRC 1-pSTAT 3复合物调节瘦素信号传导的机制。 目标2将
确定人类SRC-STAT 1突变是否损害下丘脑中的瘦素-STAT 3通路,
肥胖 使用CRISPR技术,已经产生了敲入小鼠系以模拟SRC-CRP 1基因。
与人类肥胖相关的突变。将对这些小鼠的代谢表型进行表征,并将瘦素-β-内酰胺酶(Leptin-β-内酰胺酶)
将评价STAT 3作用和STAT 3转录活性。 目标3将确定下丘脑是否
SRC-B12共激活FoxO 1转录活性以促进能量储备。小鼠缺乏或过度表达
在有/没有FoxO 1过表达的情况下,已经在成熟POMC神经元中产生了SRC-B12。 代谢
表型将在所有这些模型中表征,并且FoxO 1转录活性也将被评估。
英文摘要
Project 1 - Project Summary
Numerous nuclear receptors (NRs) or transcription factors (TFs) have been identified as important regulators of
body weight. However, anti-obesity regimens targeting these individual molecules alone are far from satisfying.
Coactivators interact with a broad range of NRs/TFs and may serve as master regulators that coordinate and
synergize actions of multiple metabolic signals. High levels of Steroid Receptor Coactivator-1 and -2 (SRC-1 and
SRC-2) are expressed in the hypothalamus, the key brain region controlling feeding and body weight balance.
The pilot observations led to a hypothesis that hypothalamic SRC-1 and SRC-2 coactivate STAT3 and FoxO1,
repectively, to provide coordinated control of energy metabolism. Aim 1 will determine whether hypothalamic
SRC-1 fine-tunes STAT3 transcription activity to mediate the anti-obesity effects of leptin. Mouse models lacking
or overexpressing SRC-1 only in leptin-responsive neurons have been generated. Metabolic parameters in
response to different diets or to leptin treatment will be assessed in these mice. Importantly, the molecular
mechanisms by which the SRC1-pSTAT3 complex regulates leptin signaling will be delineated. Aim 2 will
determine whether human SRC-1 mutations impair leptin-STAT3 pathway in the hypothalamus and cause
obesity. Using the CRISPR technology, a knockin mouse line has been generated to mimic a SRC-1 genetic
mutation associated with human obesity. Metabolic phenotypes of these mice will be characterized, and leptin-
STAT3 actions and STAT3 transcription activity will be evaluated. Aim 3 will determine whether hypothalamic
SRC-2 coativates FoxO1 transcriptional activity to facilitate energy reservations. Mice lacking or overexpressing
SRC-2 in mature POMC neurons have been generated, with/without FoxO1 overexpression. Metabolic
phenotypes will be characterized in all these models and FoxO1 transcriptional activity will also be evaluated.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
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资助金额:$40.33万
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资助金额:$40.33万
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Project 1: Brain steroid receptor coactivators and energy homeostasis
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资助金额:$31.7万
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依托单位:
Neurobiology for the sex differences in energy balance
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批准号:10374807
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项目类别:
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CNS Circuits Mediating Estrogenic Regulation on Energy and Glucose Homeostasis
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资助金额:$30.02万
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CNS Circuits Mediating Estrogenic Regulation on Energy and Glucose Homeostasis
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CNS Circuits Mediating Estrogenic Regulation on Energy and Glucose Homeostasis
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资助金额:$30.02万
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海外基金