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Series GSE67293 Query DataSets for GSE67293
Status Public on Mar 26, 2015
Title Length-dependent gene misregulation in Rett syndrome (ChIP-Seq 2)
Organism Mus musculus
Experiment type Genome binding/occupancy profiling by high throughput sequencing
Summary Disruption of the MECP2 gene leads to Rett syndrome (RTT), a severe neurological disorder with features of autism. MECP2 encodes a methyl-DNA-binding protein that is proposed to function as a transcriptional repressor, but, despite numerous studies examining neuronal gene expression in MeCP2 mutants, no coherent model has emerged for how MeCP2 regulates transcription. Here we identify a genome-wide length-dependent increase in the expression of long genes in neurons lacking MeCP2. This gene misregulation occurs in human RTT brains and correlates with onset and severity of phenotypes in Mecp2 mutant mice, suggesting that the disruption of long gene expression contributes to RTT pathology. We present evidence that MeCP2 represses long genes by binding to brain-enriched, methylated CA dinucleotides within genes and show that loss of methylated CA in the brain recapitulates gene expression defects observed in MeCP2 mutants. We find that long genes encode proteins with neuronal functions, and overlap substantially with genes that have been implicated in autism and Fragile X syndrome. Reversing the overexpression of long genes in neurons lacking MeCP2 can improve some RTT-associated cellular deficits. These findings suggest that a function of MeCP2 in the mammalian brain is to temper the expression of genes in a length-dependent manner, and that mutations in MeCP2 and possibly other autism genes may cause neurological dysfunction by disrupting the expression of long genes in the brain.
Overall design MeCP2 ChIP-seq from the frontal cortex and cortex of wild-type mice
Contributor(s) Gabel HW, Kinde BZ, Greenberg ME
Citation(s) 25762136
Submission date Mar 25, 2015
Last update date May 15, 2019
Contact name Harrison Wren Gabel
Organization name Harvard Medical School
Department Neurbiology
Lab Michael Greenberg
Street address 220 longwood avenue
City brookline
State/province Massachusetts
ZIP/Postal code 02115
Country USA
Platforms (1)
GPL17021 Illumina HiSeq 2500 (Mus musculus)
Samples (6)
GSM1643934 MeCP2IP_MeCP2_ChIP_FC1.fastq.gz
GSM1643935 INPUT_MeCP2_ChIP_FC1.fastq.gz
GSM1643936 MeCP2IP_MeCP2_ChIP_FC2.fastq.gz
This SubSeries is part of SuperSeries:
GSE60077 Length-dependent gene misregulation in Rett syndrome
BioProject PRJNA279422
SRA SRP056550

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Supplementary file Size Download File type/resource
GSE67293_RAW.tar 1.1 Gb (http)(custom) TAR (of BW)
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

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