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Transcription profiling of G1E cells which are Gata-1 erythroid-committed cell line derived from targeted disruption of Gata-1 in embryonic stem cells to study the global regulation of erythroid gene expression by transcription factor GATA-1

ABSTRACT: G1E cells are a Gata-1 erythroid-committed cell line derived from targeted disruption of Gata-1 in embryonic stem cells. The ER4 subclone contains an inducible form of Gata-1 (Gata-1-ER, Gata-1 fused to the estradiol receptor ligand binding domain). We performed transcriptome analysis using this cell line. Estradiol was added to culture medium triggering synchronous and homogenous differentiation. At various time points, RNA was sampled and analyzed using the Affymetrix MG-U74Av2 platform. Three biological replicas (A,B, and C) were performed. The thirty hour time course corresponds to development from the late BFU-E stage through the orthochromatic erythroblast stage.

ORGANISM(S): Mus musculus

SUBMITTER: John Welch

PROVIDER: E-GEOD-628 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Global regulation of erythroid gene expression by transcription factor GATA-1.

Welch John J JJ Watts Jason A JA Vakoc Christopher R CR Yao Yu Y Wang Hao H Hardison Ross C RC Blobel Gerd A GA Chodosh Lewis A LA Weiss Mitchell J MJ

Blood 20040805 10

Transcription factor GATA-1 is required for erythropoiesis, yet its full actions are unknown. We performed transcriptome analysis of G1E-ER4 cells, a GATA-1-null erythroblast line that undergoes synchronous erythroid maturation when GATA-1 activity is restored. We interrogated more than 9000 transcripts at 6 time points representing the transition from late burst forming unit-erythroid (BFU-E) to basophilic erythroblast stages. Our findings illuminate several new aspects of GATA-1 function. Firs ...[more]

PMID: 15297311

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