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Gene specific signatures by H3K4me2 and H3K27me3 modifications during retina maturation

ABSTRACT: Control of neural organogenesis is a complex process and the epigenetic contribution is largely unknown. Here we have followed the genome-wide distribution of two important histone H3 modifications, H3K4me2 and H3K27me3 during late mouse retina development. We found that genes expressed only in mature rod photoreceptors, have a unique signature consisting of de-novo accumulation of H3K4me2 both at the transcription start site (TSS) and over the whole gene that correlates with the increase in transcription, but no accumulation of H3K27me3 at any stage. We also found that distribution of H3K4me2 and H3K27me3 on the genes widely expressed is not always associated with their transcriptional levels. Genes without H3K4me2 and H3K27me3 accumulation at any stage represent a group of transcripts never expressed in retina. The epigenetic signatures defined by H3K4me2 and H3K27me3 can distinguish cell-type specific genes from widespread transcripts and may be reflective of cell specificity during retina maturation.

ORGANISM(S): Mus musculus

PROVIDER: GSE38500 | GEO | 2012/12/13

SECONDARY ACCESSION(S): PRJNA168087

REPOSITORIES: GEO

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Gene specific signatures by H3K4me2 and H3K27me3 modifications during retina maturation

Project description:Control of neural organogenesis is a complex process and the epigenetic contribution is largely unknown. Here we have followed the genome-wide distribution of two important histone H3 modifications, H3K4me2 and H3K27me3 during late mouse retina development. We found that genes expressed only in mature rod photoreceptors, have a unique signature consisting of de-novo accumulation of H3K4me2 both at the transcription start site (TSS) and over the whole gene that correlates with the increase in transcription, but no accumulation of H3K27me3 at any stage. We also found that distribution of H3K4me2 and H3K27me3 on the genes widely expressed is not always associated with their transcriptional levels. Genes without H3K4me2 and H3K27me3 accumulation at any stage represent a group of transcripts never expressed in retina. The epigenetic signatures defined by H3K4me2 and H3K27me3 can distinguish cell-type specific genes from widespread transcripts and may be reflective of cell specificity during retina maturation. Examination of 2 different histone modifications during late mouse retina development.

2012-12-13 | E-GEOD-38500 | biostudies-arrayexpress

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H3K4me2-Millipore.S2

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2010-08-10 | E-GEOD-23470 | biostudies-arrayexpress

H3K4me2-Abcam.Kc

Project description:modENCODE_submission_4935 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of the major histone modifications across the Drosophila melanogaster genome. The modifications under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Cell Line: Kc167; Tissue: embryo-derived cell-line; Developmental Stage: late embryonic stage; Genotype: se/e; Sex: Female; NUMBER OF REPLICATES: 4; EXPERIMENTAL FACTORS: Cell Line Kc167; Antibody H3K4me2-Abcam (target is H3K4me2)

2013-03-13 | E-GEOD-45063 | biostudies-arrayexpress

H3K4me2-Millipore.BG3

Project description:modENCODE_submission_2654 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determe the locations of 125 chromosomal proteins and histone modifications across the Drosophila melanogaster genome. The proteins and modifications under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf Keywords: CHIP-chip EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Cell Line: ML-DmBG3-c2; Tissue: CNS-derived cell-line; Developmental Stage: third instar larval stage; Genotype: y v f mal; Sex: Unknown; NUMBER OF REPLICATES: 4; EXPERIMENTAL FACTORS: Cell Line ML-DmBG3-c2; Antibody H3K4me2-Millipore (target is H3K4me2)

2010-08-10 | E-GEOD-23469 | biostudies-arrayexpress

Mus musculus

Project description:Gene specific signatures by H3K4me2 and H3K27me3 modifications during retina maturation

| PRJNA168087 | ENA

ChIP-chip of siGFP- or siHOTTIP-treated foreskin fibroblasts with anti-H3K4me3, anti-H3K27me3, anti-H3K4me2, anti-histone, anti-MLL1, and anti-WDR5 antibodies on HOX tiling array

Project description:Coordinate loss of MLL1 and WDR5 occupancy caused by HOTTIP knockdown were observed in distal HOXA genes. These regions correspondingly lost H3K4me3 and H3K4me2, without changes in pan-histone or H3K27me3. human foreskin fibroblasts (CRL2091), anti-H3K4me3 (Abcam ab8580, lot#1016899), anti-H3K4me2 (Abcam ab32356, lot#947550), anti-H3K27me3 (Abcam ab4729, lot#1021724), anti-histone H3 (Abcam ab1791, lot#1025144), anti-MLL1 (gift of R. Roeder, Rockefeller University), and anti-WDR5 (gift of W. Herr, UNIL) Comparison of occupancy of MLL1 and WDR5 of siGFP and siHOTTIP foreskin fibroblasts on HOX tiling array. Human foreskin fibroblasts are transfected with siGFP or siHOTTIP for 72 hrs. The cells are harvesed and ChIP performed with H3K4me3, H4K27me3, H3K4me2, MLL1, WDR5, and histone antibodies.

2011-03-21 | E-GEOD-26540 | biostudies-arrayexpress

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