RNAseq of mouse corpus callosum from WT or TRPA1-KO animals under chronic cerebral hypoperfusion
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA832109 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18920051_1.fastq.gz | Fastqsanger.gz | |||
| SRR18920051_2.fastq.gz | Fastqsanger.gz | |||
| SRR18920052_1.fastq.gz | Fastqsanger.gz | |||
| SRR18920052_2.fastq.gz | Fastqsanger.gz | |||
| SRR18920053_1.fastq.gz | Fastqsanger.gz |
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Project description:Chronic cerebral hypoperfusion is manifested in various CNS diseases accompanied by cognitive impairment, such as dementia, however the precise mechanism of chronic cerebral hypoperfusion-induced cognitive impairment remains unknown. Recently, transient receptor potential ankyrin 1 (TRPA1), activated by oxidative stress, was reported to be involved in the cerebrovascular diseases, therefore we investigated the pathophysiological role of TRPA1 in chronic cerebral hypoperfusion using a mouse bilateral common carotid artery stenosis (BCAS) model. Early cognitive impairment and white matter injury was induced by BCAS in TRPA1-knockout (TRPA1-KO) but not wild-type (WT) mice. For further investigation into the involvement of TRPA1 in chronic cerebral hypoperfusion, we conducted RNA sequence (RNAseq) in the corpus callosum from sham- and BCAS-operated WT and TRPA1-KO mice.
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Project description:Characterization of the human Anterior Temporal Lobe and Corpus Callosum: C-HPP
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Project description:Formation of cortical connections requires the precise coordination of several discrete stages. This is particularly significant with regard to the corpus callosum, the largest white matter structure bridging both cerebral hemispheres, whose development undergoes several dynamic stages including the crossing of axon projections, the elimination of exuberant projections, and the myelination of established tracts. To comprehensively characterize the molecular events in this dynamic process, we set to determine the distinct temporal expression of proteins regulating the formation of the corpus callosum and their respective developmental functions. Mass spectrometry-based proteomic profiling was performed on early postnatal mouse corpus callosi, for which limited evidence has been obtained previously, using stable isotope of labeled amino acids in mammals (SILAM). The analyzed corpus callosi had distinct proteomic profiles depending on age, indicating rapid progression of specific molecular events during this period. The proteomic expression profiles were then segregated into five separate protein clusters, each with distinct trajectories relevant to their intended developmental functions. Our analysis both confirms many previously-identified proteins in aspects of corpus callosum development, and identifies new candidates in understudied areas of development including callosal axon refinement. We present a valuable resource for identifying new proteins integral to corpus callosum development that will provide new insights into the development and diseases afflicting this structure.
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Project description:Characterization of the human Anterior Temporal Lobe and Corpus Callosum: C-HPP
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Project description:White matter damage caused by cerebral hypoperfusion is a major hallmark of subcortical ischemic vascular dementia (SIVD), which is the most common subtype of vascular cognitive impairment and dementia (VCID) syndrome. In an aging society, the number of SIVD patients is expected to increase; however, effective therapies have yet to be developed. To understand the pathological mechanisms, we analyzed the profiles of the cells of the corpus callosum after cerebral hypoperfusion in a preclinical SIVD model. We prepared cerebral hypoperfused mice by subjecting 2-month old male C57BL/6J mice to bilateral carotid artery stenosis (BCAS) operation. BCAS-hypoperfusion mice exhibited cognitive deficits at 4 weeks after cerebral hypoperfusion, assessed by novel object recognition test. RNA samples from the corpus callosum region of sham- or BCAS-operated mice were then processed using RNA sequencing. A gene set enrichment analysis using differentially expressed genes between sham and BCAS-operated mice showed activation of oligodendrogenesis pathways along with angiogenic responses. This database of transcriptomic profiles of BCAS-hypoperfusion mice will be useful for future studies to find a therapeutic target for SIVD.
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Project description:We performed RNA-Seq for the corpus callosum sampled from 12 individuals. The samples were dissected from the frozen postmortem brain. The 12 individuals were matched by their age, sex and ethnicity for the postmortem brain samples, but differed in their disease status with half of the subjects were diagnosed with autism spectrum disorders.
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Project description:Mouse cuprizone (CPZ ) model of experimental de- and remyelination was applied to mimic demyelination pathology of multiple sclerosis. The aim of the study was to profile whole genome expression to identify differentially expressed genes during the demyelinisation and after discontinuation of cuprizon treatment, during rapid remyelinisation in affected areas of mouse corpus callosum. Control mice were kept on a normal diet. The following groups representing de- and remyelinisation pathology in corpus callosum of CPZ-treated mice were compared: Partial demyelination: 2weeks CPZ (dem_2w); Complete demyelination: 4weeks CPZ (dem_4w); Remyelination: 4weeks CPZ + UNTREATED (rem); and UNTREATED control (C). The experiments were performed using 3-4 animals per groups.
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Project description:scRNAseq of Mertk-WT and Mertk-KO corpus callosum
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Project description:We report two sets of potential circadian clock target genes by high-throughput transcriptome profiling (RNA-sequencing): one set from the corpus callosum of the adult mouse brain and the other set from adult neural stem cell cultured from the SVZ (neurospheres) of the mouse brain. First, the corpus callosum was dissected from three adult wild-type and two Bmal1 knockout (Bmal1-/-) mice, mRNA profiles were generated by deep sequencing using BGISEQ-500 RNA-Seq platform. The sequence reads that passed quality control were analyzed: we mapped more than 21 million total clean reads, more than 96% total Mapping Ratio, more than 86% Uniquely Mapping Ratio per sample to mouse genome. qRT-PCR validation with primers covering at least 3 known housekeeping genes and at least 5 well-known circadian clock genes were performed with SYBR Green assay. 103 differentially expressed genes (DEGs) were identified in the corpus callosum of Bmal1-/- mice (58 up-regulated and 45 down-regulated genes; |log2FC| > 1 & adjusted P-value < 0.05). Hypergeometric test revealed that potential functions of circadian clock target genes in the corpus callosum are secreted proteins as signaling molecules. For the second set of data, neurospheres were cultured from the SVZ of three adult wild-type and three adult Bmal1-/- mice, mRNA profiles were generated by deep sequencing using BGISEQ-500 RNA-Seq platform. The sequence reads that passed quality control were analyzed: we mapped more than 28 million total clean reads, more than 97% total Mapping Ratio, more than 68% Uniquely Mapping Ratio per sample to mouse genome. qRT-PCR validation with at least 3 known housekeeping genes and at least 5 well-known circadian clock genes using SYBR Green assay. 30 DEGs were identified in neurospheres cultured from Bmal1-/- mice (17 up-regulated and 13 down-regulated genes; |log2FC| > 1 & adjusted P-value < 0.05). Gene Set Enrichment Analysis (GSEA) revealed that potential circadian clock associated functions in the SVZ (neurospheres) are controlling diverse signal transductions.
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Project description:CX3CR1-GFP mice were fed with cuprizone for 4 weeks to induce brain demyelination. The central and lateral parts of the corpus callosum (CC) were then separately dissected, dissociated and GFP+ microglial cells were isolated by FACS. 2133 migroglial cells from medial CC and 2304 cells from lateral CC were then processed for single-cell RNA-seq analysis. Single Cell RNA sequencing library were generated using the 10x Genomics Chromium Platform and sequenced on the Illumina Nextseq 500.
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