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DrTriStri

ABSTRACT: Trifolium striatum, genomic and transcriptomic data

PROVIDER: PRJEB74991 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	ERR12921328.fastq.gz	Fastqsanger.gz
	ERR12945482_1.fastq.gz	Fastqsanger.gz
	ERR12945482_2.fastq.gz	Fastqsanger.gz
	ERR12945483_1.fastq.gz	Fastqsanger.gz
	ERR12945483_2.fastq.gz	Fastqsanger.gz

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Genome-wide analysis of RARÎ² transcriptional targets in mouse striatum links retinoic acid signaling with Huntingtonâs disease and other neurodegenerative disorders

Project description:The active vitamin A derivative retinoic acid (RA) is an important regulator of adult brain functions. How these regulations are achieved is poorly known, partly due to the paucity of information on RA molecular targets. The striatum, the region involved in control of motor, cognitive and affective functions, may be particularly prone to such regulation as it displays the highest levels of RA and its receptors (RARs). We report the first genome-wide analysis of RAR-binding sites in the brain. Using chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq), as well as transcriptomic analysis of RARÎ²-null mutant mice, we identified genomic transcriptional targets of RARÎ² in the striatum. Our data point to a strong contribution of RARÎ² in controlling neurotransmission, energy metabolism, and transcription, with a particular involvement of G-protein, cAMP and calcium signaling. Quantitative PCR analysis of striatal subregions revealed a higher sensitivity of ventral structures (nucleus accumbens) to lack of RARÎ² signaling. There is a high overlap of transcriptional targets of RARÎ² and genes affected in expression in Huntingtonâs disease (HD), and we observed a decrease of RARÎ² expression in the striatum of R6/2 transgenic mice, a murine model of HD. A large number of genes bearing RARÎ² binding sites have also been implicated in Alzheimerâs and Parkinsonâs diseases, raising the possibility that compromised RA signaling in striatum may be a mechanistic link explaining the similar affective and cognitive symptoms of these diseases. Globally, our data point to a possibility of a neuroprotective function of RARÎ² in the striatum. Genome-wide mapping of RARÎ² and H3K4me3 binding sites in mouse caudate putamen

2016-07-22 | E-GEOD-67829 | biostudies-arrayexpress

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