Human inactive X chromosome (Xi) forms a compact structure called the Barr body, which is enriched in repressive histone modifications such as trimethylation of histone H3 Lys9 (H3K9me3) and Lys27 (H3K27me3). These two histone marks are distributed in distinct domains, and XIST (X inactive specific transcript) preferentially colocalizes with H3K27me3 domains. Here, we show that Xi compaction requires HBiX1, a heterochromatin protein 1 (HP1)–binding protein, and SMCHD1 (structural maintenance of chromosomes hinge domain containing 1), both of which are enriched throughout the Xi chromosome. HBiX1 localization to H3K9me3 and XIST-associated H3K27me3 (XIST-H3K27me3) domains was mediated through interactions with HP1 and SMCHD1, respectively. Furthermore, HBiX1 was required for SMCHD1 localization to H3K9me3 domains. Depletion of HBiX1 or SMCHD1, but not Polycomb repressive complex 2 (PRC2), resulted in Xi decompaction, similarly to XIST depletion. Thus, the molecular network involving HBiX1 and SMCHD1 links the H3K9me3 and XIST-H3K27me3 domains to organize the compact Xi structure.
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View SamplesPerilipin A (PeriA) exclusively locates on adipocyte lipid droplets and is essential for lipid storage and lipolysis. Adipocyte specific overexpression of PeriA caused resistance to diet-induced obesity and resulted in improved insulin sensitivity. In order to better understand the biological basis for this observed phenotype we performed DNA microarray analysis on white adipose tissue (WAT) from PeriA transgenic (Tg) and control wildtype (WT) mice.
Perilipin overexpression in white adipose tissue induces a brown fat-like phenotype.
Sex, Specimen part
View SamplesRNA sequencing data for four cell lines representing different stages during malignant transformation.
Majority of differentially expressed genes are down-regulated during malignant transformation in a four-stage model.
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View SamplesTranscriptome was performed to reveal the gene expression change in mouse thalamic LGN and MGB after visual deprivation throughing one-week dark exposure from postnatal day 21 to 28 day.
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Sex, Specimen part
View SamplesAnalysis of the molecular mechanism through which Rh2 promotes cancer cell apoptosis at the transcriptome level.
No associated publication
Sex, Specimen part
View SamplesVEGF and VEGFB Play Balancing Roles in Adipose Differentiation, Gene Expression and Function
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Sex, Specimen part, Cell line
View Samplesgene expression study on brain and lung under Dip2a regulation to better understand the role of Dip2a gene during mice brain and lung development.
Large genomic fragment deletions and insertions in mouse using CRISPR/Cas9.
Sex, Specimen part, Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Interferon stimulation creates chromatin marks and establishes transcriptional memory.
Specimen part, Time
View SamplesWe used global microarray analysis to identify genes which are regulated by Interferon-gamma stimulation in Bone-marrow derived macrophages.
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Time
View SamplesTo identify factors involved in glioma-initiating cells (GICs), we compared gene expressions between GIC-like cells and non-GICs.
Combination of a ptgs2 inhibitor and an epidermal growth factor receptor-signaling inhibitor prevents tumorigenesis of oligodendrocyte lineage-derived glioma-initiating cells.
Specimen part
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