Mechanism underlying cognitive and synaptic flexibility
认知和突触灵活性的潜在机制
基本信息
- 批准号:10305632
- 负责人:
- 金额:$ 48.79万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-12-01 至 2024-10-31
- 项目状态:已结题
- 来源:
- 关键词:AddressAdenylate CyclaseAdultAffectAttenuatedAutomobile DrivingBehavioralBrainCellsChemosensitizationCognitionCognitiveCognitive deficitsComputer AnalysisCuesCyclic AMPDataDependenceFrequenciesGene Expression ProfileGeneticGlycogen Synthase Kinase 3Hippocampus (Brain)Homosynaptic DepressionHyperactivityImpaired cognitionImpairmentKnockout MiceKnowledgeLabelLearningLightLinkLong-Term DepressionLong-Term PotentiationLoxP-flanked alleleMapsMediatingMemoryMemory impairmentMental HealthMental disordersMolecularMolecular TargetMood DisordersMouse StrainsMusNeuronal PlasticityNeuronsNeurophysiology - biologic functionOpticsOutcomeOutcome StudyPhosphotransferasesProto-Oncogene Proteins c-aktReversal LearningRoleSignal TransductionSynapsesSynaptic plasticitySystemTherapeuticTransgenic MiceUpdatebasecell typecognitive functionconditional knockoutconditioned feardaily functioningenvironmental changefear memoryflexibilityglycogen synthase kinase 3 betahippocampal pyramidal neuroninsightmouse modelneurotransmissionoptogeneticspatient populationpatient subsetsrestorationspatial memoryspatiotemporalsynaptic depressiontargeted treatmenttherapeutic targettooltraittranscriptomewhole genome
项目摘要
Abstract/Summary
As a functionally important aspect of cognitive flexibility, reversal learning leads to
inhibition/suppression of the previously established memory. Effective reversal learning
is fundamental for information updating and essential for adaptation to changing
environmental cues. Regarding its impact on mental health, deficits in cognitive flexibility
and reversal learning are prevalent in psychological and mood disorders, and are
considered as an emerging therapeutic target. However, there is limited understanding
of mechanisms underlying cognitive flexibility. Our recent experimental data revealed
that, contrary to the previously recognized role of cAMP signaling in regulating broad
spectrum of learning and memory, type 8 adenylyl cyclase (ADCY8) specifically
regulates the activity-dependent suppression of old memory following reversal learning.
With our recently developed Adcy8 conditional knockout mice, we will determine the
effects of region- and cell type-specific ADCY8 deficiency on synaptic and cognitive
flexibility: reversal/suppression of the previously established synaptic potentiation (i.e.
depotentiation) and reversal/suppression of the previously established memory. Further,
computational analysis with transcriptome landscape predicts that the PI3K
(phosphatidylinositide 3-kinase)/Akt (protein kinase B)-GSK3β (glycogen synthase
kinase 3β) signaling cascade is the molecular substrate of ADCY8. We will determine
whether restoration of the ADCY8-PI3K/Akt-GSK3β signaling cascade causally corrects
the defective synaptic depotentiation and reversal/suppression of old memory. Finally,
we will determine the causal effect of synaptic depotentiation on old memory
suppression and its dependency on the ADCY8-PI3K/Akt-GSK3b signaling cascade.
Considering that there are 10 different ADCYs in mammalian system, the outcome of
this project will delineate a unique of role of ADCY8 in regulating a specific domain of
cAMP signaling that is functionally linked to cognitive and synaptic flexibility. We also
expect that the mechanisms learned from this study may suggest targeted therapeutic
strategies to attenuate reversal learning deficits in certain patient population with altered
cAMP-PI3K/Akt-GSK3β signaling.
摘要/概要
作为认知灵活性的一个重要功能方面,逆向学习导致
抑制/抑制先前建立的记忆。有效的逆转学习
是信息更新的基础,也是适应变化的必要条件
环境线索。关于其对心理健康的影响,认知灵活性的缺陷,
和逆转学习在心理和情绪障碍中普遍存在,
被认为是一个新兴的治疗靶点。然而,
认知灵活性的潜在机制。我们最近的实验数据显示,
与之前公认的cAMP信号在调节广泛的
学习和记忆谱,8型腺苷酸环化酶(ADCY 8)特异性
调节逆转学习后对旧记忆的活动依赖性抑制。
利用我们最近开发的Adcy 8条件性敲除小鼠,我们将确定
区域特异性和细胞类型特异性ADCY 8缺陷对突触和认知功能的影响
灵活性:逆转/抑制先前建立的突触增强(即,
去增强)和先前建立的记忆的逆转/抑制。此外,
转录组景观的计算分析预测,PI 3 K
(磷脂酰肌醇3-激酶)/Akt(蛋白激酶B)-Akt GSK 3 β(糖原合酶
激酶3β)信号级联是ADCY 8的分子底物。
ADCY 8-Akt PI 3 K/Akt-Akt GSK 3 β信号级联的恢复是否因果地纠正了
有缺陷的突触去增强和旧记忆的逆转/抑制。最后,
我们将确定突触去增强对旧记忆的因果影响
抑制及其对ADCY 8-β PI 3 K/Akt-β GSK 3b β信号级联的依赖性。
考虑到哺乳动物系统中有10种不同的ADCYs,
该项目将描述ADCY 8在调节特定的蛋白质结构域中的独特作用。
cAMP信号在功能上与认知和突触灵活性相关。
预期从这项研究中了解到的机制可能提示靶向治疗,
策略,以减轻某些患者群体的逆转学习缺陷,
cAMP-β PI 3 K/Akt-β GSK 3 β信号通路。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Hongbing Wang其他文献
Hongbing Wang的其他文献
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{{ truncateString('Hongbing Wang', 18)}}的其他基金
Novel noncanonical actions of CAR in human Liver
CAR 在人类肝脏中的新的非常规作用
- 批准号:
10445324 - 财政年份:2021
- 资助金额:
$ 48.79万 - 项目类别:
Novel noncanonical actions of CAR in human Liver
CAR 在人类肝脏中的新的非常规作用
- 批准号:
10275448 - 财政年份:2021
- 资助金额:
$ 48.79万 - 项目类别:
Novel noncanonical actions of CAR in human Liver
CAR 在人类肝脏中的新的非常规作用
- 批准号:
10650357 - 财政年份:2021
- 资助金额:
$ 48.79万 - 项目类别:
Mechanism underlying cognitive and synaptic flexibility
认知和突触灵活性的潜在机制
- 批准号:
10515330 - 财政年份:2020
- 资助金额:
$ 48.79万 - 项目类别:
Human CYP2B6 in alcohol metabolism and alcoholic liver injury
人CYP2B6在酒精代谢和酒精性肝损伤中的作用
- 批准号:
10256633 - 财政年份:2020
- 资助金额:
$ 48.79万 - 项目类别:
Human CYP2B6 in alcohol metabolism and alcoholic liver injury
人CYP2B6在酒精代谢和酒精性肝损伤中的作用
- 批准号:
10037957 - 财政年份:2020
- 资助金额:
$ 48.79万 - 项目类别:
Nonconventional role of ADCY in Gq-mediated neuronal signaling and neuroplasticity
ADCY 在 Gq 介导的神经元信号传导和神经可塑性中的非常规作用
- 批准号:
10082304 - 财政年份:2019
- 资助金额:
$ 48.79万 - 项目类别:
Nonconventional role of ADCY in Gq-mediated neuronal signaling and neuroplasticity
ADCY 在 Gq 介导的神经元信号传导和神经可塑性中的非常规作用
- 批准号:
10577826 - 财政年份:2019
- 资助金额:
$ 48.79万 - 项目类别:
Nonconventional role of ADCY in Gq-mediated neuronal signaling and neuroplasticity
ADCY 在 Gq 介导的神经元信号传导和神经可塑性中的非常规作用
- 批准号:
10338100 - 财政年份:2019
- 资助金额:
$ 48.79万 - 项目类别:
Nonconventional role of ADCY in Gq-mediated neuronal signaling and neuroplasticity
ADCY 在 Gq 介导的神经元信号传导和神经可塑性中的非常规作用
- 批准号:
9900871 - 财政年份:2019
- 资助金额:
$ 48.79万 - 项目类别:
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