Mechanism underlying cognitive and synaptic flexibility
Mechanism underlying cognitive and synaptic flexibility
批准号:
10515330
负责人:
Hongbing Wang
金额:
$46.22万
依托单位国家:
美国
项目类别:
财政年份:
2020
资助国家:
美国
项目状态:
已结题
起止时间:
2020-12-01 至 2024-10-31
关键词:
AblationAddressAdenylate CyclaseAdultAffectAttenuatedAutomobile DrivingBehavioralBrainCellsChemosensitizationCognitionCognitiveCognitive deficitsComputer AnalysisCuesCyclic AMPDataDependenceFrequenciesGene Expression ProfileGeneticGlycogen Synthase Kinase 3HippocampusHomosynaptic DepressionImpaired cognitionImpairmentKnockout MiceKnowledgeLabelLearningLightLinkLong-Term DepressionLong-Term PotentiationLoxP-flanked alleleMapsMediatingMemoryMental HealthMental disordersMolecularMolecular TargetMood DisordersMouse StrainsMusNeuronal PlasticityNeuronsNeurophysiology - biologic functionOpticsOutcomeOutcome StudyPhosphotransferasesProto-Oncogene Proteins c-aktReversal LearningRoleSignal TransductionSynapsesSynaptic plasticitySystemTherapeuticTransgenic MiceUpdatecell typecognitive functionconditional knockoutconditioned feardaily functioningenvironmental changefear memoryflexibilityglycogen synthase kinase 3 betahippocampal pyramidal neuroninsightmouse modelneurotransmissionoptogeneticspatient populationpatient subsetsrestorationspatial memoryspatiotemporalsynaptic depressiontargeted treatmenttherapeutic targettooltraittranscriptomewhole genome
中文摘要
摘要/摘要:
--
作为认知能力灵活性在功能上和重要方面的一个方面,学习能力的逆转导致了学习能力的下降。
对先前建立的记忆的抑制/抑制能力。有效的逆转学习能力。
是信息更新的根本标准,也是适应不断变化的环境的基本标准。
环境问题的线索。关于它对心理健康的影响,人们在认知和灵活性方面存在缺陷。
而学习能力逆转是心理障碍和心境障碍中最普遍的疾病,包括心理障碍和心理障碍。
它被认为是一种新兴的治疗药物靶点。然而,人们对它的了解仍然有限。
他们的机制是潜在的认知和灵活性。我们最近的最新实验数据揭示了。
这与之前人们认识到的阵营在监管广泛的环境中的作用相反。
学习和记忆的光谱图,特别是8型腺苷酸环化酶(ADCY8)。
调节在学习逆转后对旧记忆的依赖活动的抑制。
由于我们的研究最近开发出了Adcy8有条件的基因敲除小鼠,我们将无法确定是否会。
不同区域和不同细胞类型的ADCY8基因缺陷对突触功能和认知功能的影响
灵活性:逆转/抑制先前建立的突触增强效应(即
去增强)和对先前建立在记忆中的记忆的逆转/抑制。
用转录组和景观图进行的计算分析预测,未来的PI3K。
(磷脂酰肌醇-3-激酶)/Akt-B(蛋白激酶B)-GSK3-β(糖原合成酶)。
激酶(3β):信号转导通路是ADCY8的主要分子底物,我们将不会确定。
恢复β-PI3K/AKT-GSK3信号和级联信号是否会因此而更正。
有缺陷的突触功能减退和旧记忆的逆转/抑制能力。最后,。
我们还不能确定突触功能减退对旧记忆的主要因果关系。
抑制对-PI3K/AKT-GSK3b信号的依赖程度越来越高。
考虑到在哺乳动物的生命系统中有大约10种不同的ADCY细胞,我们认为这是一种新的结果。
这一项目将勾勒出一个独特的角色,即ADCY8在规范一个特定的行业领域的过程中发挥的作用。
坎普表示,这在功能上与认知能力和突触能力的灵活性没有关系。
预计从这项研究中学到的新机制可能会提示我们有针对性的治疗。
一些策略可以有效地减轻某些患者的学习和学习障碍的逆转。
CAMP-PI3K/AKT-GSK3β正在发送信号。
英文摘要
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.
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