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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression analysis of V5 tagged Sox17 expressing ES cells

ABSTRACT: Analysis of the expression of KH2 embryonic stem cells inducibly expressing V5 tagged Sox17 protein. Results provide information on the endodermal gene expression program activated after Sox17 expression in ES cells. Total RNA extracted from 48 hours doxycycline induced compaired to non-induced Sox17-V5 expressing ES cells

ORGANISM(S): Mus musculus

SUBMITTER: Irene Aksoy

PROVIDER: E-GEOD-43233 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Oct4 switches partnering from Sox2 to Sox17 to reinterpret the enhancer code and specify endoderm.

Aksoy Irene I Jauch Ralf R Chen Jiaxuan J Dyla Mateusz M Divakar Ushashree U Bogu Gireesh K GK Teo Roy R Leng Ng Calista Keow CK Herath Wishva W Lili Sun S Hutchins Andrew P AP Robson Paul P Kolatkar Prasanna R PR Stanton Lawrence W LW

The EMBO journal 20130308 7

How regulatory information is encoded in the genome is poorly understood and poses a challenge when studying biological processes. We demonstrate here that genomic redistribution of Oct4 by alternative partnering with Sox2 and Sox17 is a fundamental regulatory event of endodermal specification. We show that Sox17 partners with Oct4 and binds to a unique 'compressed' Sox/Oct motif that earmarks endodermal genes. This is in contrast to the pluripotent state where Oct4 selectively partners with Sox ...[more]

PMID: 23474895

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Gene expression analysis of V5 tagged Sox17 expressing ES cells

Project description:Analysis of the expression of KH2 embryonic stem cells inducibly expressing V5 tagged Sox17 protein. Results provide information on the endodermal gene expression program activated after Sox17 expression in ES cells.

2013-04-23 | GSE43233 | GEO

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Project description:Gene expression analysis of V5 tagged Sox17 expressing ES cells

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2010-03-31 | GSE19028 | GEO

Gene Expression Analysis of Sox17-induced Mouse Embryonic Stem Cells

Project description:To determine the effect of Sox17 overexpression in mouse embryonic stem (ES) cells, we performed gain-of-function analysis by generating ES cell lines carrying a doxycycline inducible FLAG-tagged Sox17 transgene. We treated Sox17-inducible ES cells with doxycycline, collected RNA and performed genome-wide transcriptional analysis. We found that genes invovled in adhesion function and basement membrane establishment were transcriptionally upregulated in ES cells upon induction of Sox17. We also observed downregulation in the transcription of genes involved in pathways known to be functionally important for ES cell pluripotency and self-renewal. However, Sox17 expression was not sufficient to rapidly down-regulate Sox2, Nanog, and Oct4. Two independent doxycycline inducible Sox17-overexpressing mouse embryonic stem cells were derived. The genes expression changes in the Sox17-induced cells were compared to untreated (no doxycycline) controls and to control cells treated with or without doxycycline. The total RNA from these samples were amplified using Ambion Illumina TotalPrep RNA Amplification kit and arrayed on Illumina MouseRef8 v2 chips.

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Project description:We investigated whether Sox17 directly or indirectly regulates extraembryonic endoderm gene expression by identifying Sox17 DNA-binding sites using chromatin-immunoprecipitation coupled with whole-genome promoter tiling array analysis (ChIP-Chip). We used the Sox17 and FLAG antibody to ask whether Sox17 was binding directly to the regulatory regions of genes in homogeneous extraembryonic endoderm (XEN) cell lines and in Sox17-inducible mouse embryonic stem (ES) cells. In XEN cells, Sox17 binding sites were located within the promoters or the introns of 2206 (3%) genes. We performed an ontology analysis for the genes with Sox17 binding sites and found that a significant number had adhesion functions in basement membrane establishment and maintenance. In addition to these ECM genes, Sox17 was also bound to promoter regions of a variety of other genes implicated in extraembryonic endoderm development including key transcription factors. Ontology analysis of all the Sox17 ChIP-chip binding targets identified in Sox17-induced ES cells, demonstrated a significant enrichment near genes involved in the cell cycle as well as genes involved in signaling pathways that function in embryonic stem cell maintenance. Sox17 was also observed to directly bind to the regulatory regions of many genes in pathways known to be functionally important for ES cell pluripotency and self-renewal. These studies suggest that one of Sox17’s functions in the differentiation of ICM and ES cells is to bind the regulatory regions of many genes that encode basement membrane components, thus leading to their activation. In addition to directly activating genes required for primitive endoderm differentiation, Sox17 may also function to activate and reinforce the transcriptional network governing differentiation.

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Project description:V5 tagged Elf5.

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