Project description:ENCODE ChIP-chip study using human myelogenous leukemia cell line K-562 and anti histone H3K4me2 (Abcam; ab7766); H3K4me3 (Abcam; ab8580); H3ac (Upstate; 06-599); H4ac (Upstate; 06-866); Histone H2B (Abcam: ab1790) and Histone H3 (Abcam: ab1791) antibodies. Each antibody experiment was conducted in three biological replicates, with two technical replicates performed for each biological replicate
Project description:ENCODE ChIP/chip study using human lymphoblastoid cell line GM06990; human cervix carcinoma cell line HeLaS3; human fetal lung fibroblast cell line HFL1; human T cell line MOLT4; chimpanzee lymphoblastoid cell line PTR8; and anti Histone H3K4me1 (Abcam; ab8895); H3K4me2 (Abcam; ab7766); H3K4me3 (Abcam; ab8580); H3ac (Upstate; 06-599) and H4ac (Upstate; 06-866) antibodies. The experiment was conducted in three biological replicates (1;2;3) with up to two technical duplicates (a;b).
Project description:The Igf2r imprinted cluster is an epigenetic model of cis-acting silencing in which expression of a ncRNA silences multiple genes. Here, we map chromatin profiles on the maternal and paternal chromosome in a 250 kb region. We show that histone modifications associated with expressed and silent genes are mutually exclusive and localize to discrete regions. Expressed genes are modified in two ways; at promoter regions by H3K4me3+H3K4me2+H3K9Ac and on putative regulatory elements by H3K4me2+H3K9Ac. Repressed genes displayed two types of non-overlapping profiles. Type 1 localized to short regions and contained H3K9me3+H4K20me3 and sometimes HP1. Type 2 spanned a large domain containing multiple tissue-specific silent genes and contained H3K27me3 alone. These data identify different forms of repressive chromatin on chromosome arms that resemble constitutive and facultative heterochromatin but are restricted to short regions and interspersed with euchromatin. Keywords: ChIP-Chip, chromatin profile, genomic imprinting, noncoding RNA
Project description:Epigenetic mechanisms have been poorly understood in Plasmodium falciparum, the causative agent of malaria. To elucidate stage specific epigenetic regulations in P. falciparum, we performed genome-wide mapping of various histone modifications, nucleosomes and RNA Polymerase II. Our comprehensive analysis suggest that transcription initiation and elongation are distinct in Plasmodium. In this study, by analyzing histone modifications, nucleosome occupancy and RNA Polymerase II (Pol II) at three different IEC developmental stages of Plasmodium; ring, trophozoite and schizont, we tried to unravel the epigenetic mechanism associated with gene regulation. Examination of H3K27me3, H3K4me3, H3K9me3, H3K14ac, H3K4me1, H3K79me3, H3K27ac, H3K4me2, H3K9ac, H4ac, RNA Pol II and Histone H3 at three different stages of Plasmodium falciparum
Project description:This SuperSeries is composed of the following subset Series: GSE21299: Expression data from murine cell line transduced with epitope tagged forms of Hoxa9 GSE33509: Identification and Characterization of Hoxa9 Binding Sites in Hematopoietic Cells GSE33517: Epigenetic profiling of histone H3K4me1, H3K4me3, H3K27me3, H3ac, H4ac, CBP and P300 using ChIP-chip Refer to individual Series
Project description:To study the role of Histone H4 lysine 20 mono- and tri-methylation (H4K20me1, H4K20me3) in relationship to chromatin accessibility and gene expression, we report the application of high-throughput profiling of these marks in Human Osteosarcoma U2OS and Mouse Fibroblast (MEF) cells with Set8 knockdown or control siRNA treatment. We find that H4K20me1 contributes to the open chromatin structure at active genes.
Project description:Analysis of H3ac, H4ac, STAT1 and IRF1 binding in IFNg treated and untreated HeLa cells for 6 hours was done using 50mer oligonucletide probes at 30bp intervals tiling over non-repetitive 16MB gene locus(HG17) Keywords: ChIP-chip
Project description:Analysis of H3ac, H4ac, STAT1 and IRF1 binding in IFNg treated and untreated HeLa cells for 6 hours was done using 50mer oligonucletide probes at 30bp intervals tiling over non-repetitive 122kb CIITA locus(HG17) Keywords: ChIP-chip
