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Hippocampus miRNA profiles in chronic cerebral-hypoperfusion rats

ABSTRACT: Hippocampus miRNA profiles in chronic cerebral-hypoperfusion rats

PROVIDER: PRJNA595889 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10702886.fastq.gz	Fastqsanger.gz
	SRR10702887.fastq.gz	Fastqsanger.gz
	SRR10702888.fastq.gz	Fastqsanger.gz
	SRR10702889.fastq.gz	Fastqsanger.gz
	SRR10702890.fastq.gz	Fastqsanger.gz

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Hippocampus miRNA profiles in chronic cerebral-hypoperfusion rats

Project description:Chronic cerebral hypoperfusion (CCH) is a well-known risk factor for vascular dementia and other neurodegenerative disease, for which there are currently no effective medications available. MicroRNA (miRNA) are noncoding RNAS mediating post-translational silencing of genes, and has been extensively studied for their involvement in neurodegenerative disease. However, little is known about their roles in vascular dementia (VaD). In this work, a bilateral common carotid arteries occlusion (2-VO) surgery in rats was employed to induced CCH related cognitive dysfunction. Four months later, the hippocampi were dissected from 2-VO and sham operated rats for high-throughput profiling of miRNAs. Twelve differentially expressed miRNAs were identified according to a cutoff of |log2(Fold Change)|≥1 and p＜0.05. GO analysis of target genes revealed that the most relevant biological processes included the regulatory region nucleic acid binding, histone acetyltransferase binding, organic acid transmembrane transporter activity, L-amino acid transmembrane transporter activity. The cellular structure mainly included histone deacetylation complexes, endosomes, Golgi membranes, etc. And the involved molecular processes mainly included axon development, organ morphogenesis, macromolecular modification, regulation of neuron projection development, neuron development. This study provides a framework for understanding the alternations in hippocampus miRNA profiles underwent hypoxia insult.

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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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