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Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner

ABSTRACT: Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner

PROVIDER: PRJNA665969 | ENA |

REPOSITORIES: ENA

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Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner

Project description:We demonstrated that Pyk2 is a novel fear memory suppressor molecule and Pyk2 null mice provide a model for understanding fear-related disorders.

2022-02-02 | GSE180598 | GEO

Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner

Project description:We demonstrated that Pyk2 is a novel fear memory suppressor molecule and Pyk2 null mice provide a model for understanding fear-related disorders.

2022-02-02 | GSE158606 | GEO

Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner

Project description:Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner

| PRJNA748756 | ENA

Pyk2 suppresses contextual fear memory in an autophosphorylation-independent manner.

Project description:Clustered protocadherins (Pcdhs) are a large family of cadherin-like cell adhesion proteins that are central for neurite self-avoidance and neuronal connectivity in the brain. Their downstream nonreceptor tyrosine kinase Pyk2 (proline-rich tyrosine kinase 2, also known as Ptk2b, Cakb, Raftk, Fak2, and Cadtk) is predominantly expressed in the hippocampus. We constructed Pyk2-null mouse lines and found that these mutant mice showed enhancement in contextual fear memory, without significant change in auditory-cued and spatial-referenced learning and memory. In addition, by preparing Y402F mutant mice, we observed that Pyk2 suppressed contextual fear memory in an autophosphorylation-independent manner. Moreover, using high-throughput RNA sequencing, we found that immediate early genes, such as Npas4, cFos, Zif268/Egr1, Arc, and Nr4a1, were enhanced in Pyk2-null mice. We further showed that Pyk2 disruption affected pyramidal neuronal complexity and spine dynamics. Thus, we demonstrated that Pyk2 is a novel fear memory suppressor molecule and Pyk2-null mice provide a model for understanding fear-related disorders. These findings have interesting implications regarding dysregulation of the Pcdh‒Pyk2 axis in neuropsychiatric disorders.

| S-EPMC8782590 | biostudies-literature

RNA-seq analysis of contextual fear conditioning

Project description:This dataset constitutes the first RNA-seq study of gene expression following contextual fear conditioning in the mouse hippocampus.

2015-07-22 | GSE63412 | GEO

Sono-Seq analysis of contextual fear conditioning

Project description:This dataset constitutes the first Sono-Seq study of chromatin accessibility following contextual fear conditioning in the mouse hippocampus.

2017-11-20 | GSE98317 | GEO

Encoding of Contextual Fear Memory Requires De Novo Proteins in the Prelimbic Cortex

Project description:Time dependent coordinated hippocampal-prefrontal cortical interactions are required for the long-term storage of memories. However, the role of prefrontal cortex (PFC) in encoding of long-term memories remains elusive. Here, we discover a critical role of PFC in the encoding of contextual memories in mice. We demonstrate that specific pools of mRNAs are translated in the PFC following one and six hours of behavioral training. Moreover, disruption of protein synthesis in the prelimbic region of PFC immediately after training inhibits encoding contextual fear memories, whereas disruption at six hours after training is ineffective. Thus, early protein synthesis in the PFC is necessary and critical for the encoding of contextual fear memories. These findings establish key role for the prelimbic cortex in encoding of contextual memories.

2017-01-06 | GSE61529 | GEO

Gene-expression changes in neurons active during contextual fear conditioning compared to controls left in the homecage

Project description:This experiment uses a transgenic mouse that allows for activity-induced expression of an HA-tagged ribosome in an inducible and cre-dependent manner. This allowed us to assess long-lasting gene-expression changes in neurons active during contextual fear conditioning. Previous studies have used similar systems to look a transient changes in gene expression in these neurons, but we developed a system to look at long lasting changes. The workflow includes tissue dissection of the prefrontal cortex, tissue homogenization followed by an immunoprecipitation of the tagged ribosomes using antibodies against HA. RNA bound to the ribosomes is then purified, a cDNA library is prepared and RNAseq was performed. The experimental group was fear conditioned and the control group was left in their homecage for induction of HA- expression in active neurons.

2020-03-27 | E-MTAB-7836 | biostudies-arrayexpress

Contextual fear conditioning induced transcriptional changes in hippocampal CA1 neurons

Project description:The goal of our study was to assess whether the experience can regulate specific lncRNAs within the hippocampus and their role in associative memory. To address this, we carried out unbiased analyses of gene expression in CA1-hippocampal neurons to identify lncRNA changes induced by contextual fear conditioning (CFC).

2023-08-07 | GSE214838 | GEO

Microarray dataset of gene transcription in mouse microglia and peripheral monocytes in contextual fear conditioning

Project description:Using Illumina MouseWG-6v2 microarrays, we investigated the gene transcription changes in microglia and peripheral monocytes after contextual fear conditioning of C57BL/6J mice. Mice were trained with or without a single minimized footshock stimulation (0-s or 2-s, 0.4 mA) and re-exposed to the training context without footshock for three different durations 24 h later: 0 min (FS0), 3 min (FS3), or 30 min (FS30). Whole brain microglia and peripheral monocytes were prepared 24 h after re-exposure using a neural tissue dissociation kit, including non-footshock controls for two re-exposure durations (Con3 and Con30). The data can be valuable for researchers interested in glial cells and neurotransmission studies and are related to the research article “Contextual fear conditioning regulates synapse-related gene transcription in mouse microglia”.

2022-10-28 | E-MTAB-12361 | biostudies-arrayexpress

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