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Effect of posttranslational modifications of SATB1 on its ability to regulate global gene expression in HeLa Cells

ABSTRACT: Gene profiling studies using RNA from HeLa cells overexpressing point mutants of SATB1 defective in phosphorylation or acetylation unequivocally demonstrated the importance of these modifications towards the ability of SATB1 to act as a global regulator of gene expression. HeLa cells were chosen as a representative of non-T cells, and do not express SATB1 endogenously. Keywords: cDNA array

ORGANISM(S): Homo sapiens

PROVIDER: GSE4313 | GEO | 2006/06/15

SECONDARY ACCESSION(S): PRJNA104649

REPOSITORIES: GEO

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Effect of post-translational modifications of SATB1 on global gene expression in Jurkat T cells

Project description:Gene profiling studies using RNA from cells overexpressing point mutants of SATB1 defective in phosphorylation or acetylation unequivocally demonstrated the importance of these modifications towards the ability of SATB1 to act as a global regulator of gene expression in Jurkat T cells. Jurkat cells express SATB1 endogenously, and therefore we monitored the effect of overexpression of SATB1. Under this situation, the overexpressed mutants will compete with the endogenously expressed wild type SATB1 and therefore the effect on gene expression may differ from SATB1 non-expressing non T cell line such as HeLa. Keywords: cDNA array

2006-06-15 | GSE4314 | GEO

Transcriptome analysis of SATB1- and SATB1+ Hematopoietic stem cells.

Project description:Hematopoietic stem cells (HSCs) are now recognized as a heterogeneous population in self-renewing and differentiation capabilities. However, fundamental mechanisms governing the heterogeneity remain uncertain. We here show that special AT-rich sequence-binding protein 1 (SATB1), a global chromatin organizer, is involved in the mechanisms. Analyzing hematological lineage-restricted SATB1 knock out mice proved that SATB1 is indispensable for both self-renewal and normal differentiation of adult HSCs. Using SATB1/Tomato knock-in mice, we subdivided HSCs according to SATB1 intensity. Culture experiments and RNA-sequencing revealed essential differences between SATB1- and SATB1+ HSCs regarding lineage potential.

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Transcriptome-wide mapping of RNA:protein interactions of SRSF5 in HeLa cells

Project description:We performed SRSF5 iCLIP2 in HeLa cells expressing endogenously GFP-tagged SRSF5.

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Transcriptome of SATB1 transduced Hut78 cells

Project description:Hut78 cell line was used as Sezary syndrome cell model. Comparative transcriptome profiles of SATB1 transduced Hut78 cells (Hut78-SATB1) relative to empty MIG vector transduced control Hut78 cells (Hut78-MIG) were analyzed. The primary goal is to establish a list of genes with differential expression between SATB1 transduced Hut78 cells and control Hut78 cells to identify the gene expression regulation effect of SATB1 expression in Sezary cells. Two color experiment, 3 biological replicates (3 unique cell clones) with Hut78 cells, each compared with a distinct individual clone from cells transduced with empty MIG vector.

2011-12-01 | E-GEOD-24951 | biostudies-arrayexpress

Transcriptome of SATB1 transduced Hut78 cells

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Expression data in WT and Satb1-/- ES cells

Project description:Satb1 and Satb2 are regulators of higher order chromatin in T cells and osteoblasts repectively. We were interested if Satb1 and Satb2 play a role in the regulation of gene expression in ES cells. In this experiment, we compared the transcriptome of wild type and Satb1-/- ES cells. Interestingly Satb1-/- ES cells display an impaired differentiation potential. WT and Satb1-/- ES cells were grown for 3 days in the presence of LIF and selected for Oct4-expression cells by the addition of hygromycin to the culture medium. Previously the cells had been engineered so that they contain a selectable HygroTK reporter in the the Oct4 locus. Total RNA was harvested and used for hybridization.

2009-09-01 | E-GEOD-17487 | biostudies-arrayexpress

Role of Satb1 and Satb2 in embryonic stem cells

Project description:Satb1 and Satb2 are regulators of higher order chromatin in T cells and osteoblasts repectively. We were interested if Satb1 and Satb2 play a role in the regulation of gene expression in ES cells. This SuperSeries is composed of the following subset Series: GSE17487: Expression data in WT and Satb1-/- ES cells GSE17488: Expression data in WT and ES cells overexpressing Satb1 GSE17489: Expression data in WT and ES cells overexpressing Satb2 Refer to individual Series

2009-09-01 | E-GEOD-17490 | biostudies-arrayexpress

Satb1 Overexpression Drives Tumor-Promoting Activities In Cancer-Associated Dendritic Cells

Project description:Special AT-rich sequence-binding protein-1 (Satb1) governs genome-wide transcriptional programs. Using a new conditional knockout mouse, we found that Satb1 is required for normal differentiation of conventional dendritic cells (DCs). Furthermore, Satb1 governs the differentiation of inflammatory DCs by regulating MHC-II expression through Notch1 signaling. Mechanistically, Satb1 binds to the Notch1 promoter, activating Notch expression and driving RBPJ occupancy of the H2-Ab1 promoter, which activates MHC-II transcription. However, tumor-driven, unremitting expression of Satb1 in activated Zbtb46+ inflammatory DCs that universally infiltrate ovarian tumors results in an immunosuppressive phenotype characterized by increased secretion of tumor-promoting Galectin-1 and IL-6. Correspondingly, specific in vivo silencing of Satb1 in tumor-associated DCs reverses their tumorigenic activity and boosts protective immunity. Therefore, dynamic fluctuations in Satb1 expression govern the generation and immunostimulatory activity of steady-state and inflammatory DCs, but relentless Satb1 overexpression in differentiated DCs converts them into tolerogenic/pro-inflammatory cells that contribute to malignant progression. RNA-seq with whild type and knocked-down Satb1

2016-01-13 | E-GEOD-76776 | biostudies-arrayexpress

Expression data in WT and Satb1-/- ES cells

2009-09-01 | GSE17487 | GEO

Genes affected by Satb1 deficiency in HSC, LMPP and CLP

Project description:To understand gene expression signatures between wild-type and Satb1-deficient cells To examine genes regulated by Satb1 expression, sets of microarrays were conducted with Lin- c-kitHi Sca-1+ Flt3- HSC-enriched cells, Lin- c-kitHi Sca-1+ Flt3+LMPP-enriched cells, and Lin- c-kitLo Sca-1Lo IL7RÎ±+ CLP-enriched cells derived from E18.5 FL of Satb1-null mice or their WT littermates.

2013-03-20 | E-GEOD-45299 | biostudies-arrayexpress

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