Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression changes in mouse embryonic fibroblasts (MEF cells) deficient for Ing1 and Gadd45a


ABSTRACT: ING1b and GADD45a are nuclear proteins involved in the regulation of cell growth, apoptosis and DNA repair. We found that ING1b and GADD45a physically and functionally interact in the epigenetic regulation of specific target genes. In order to study this interaction further, we analysed the transcriptional changes in MEF cells from single and double Ing1/Gadd45 knockout mice via microarray profiling. Mouse embryonic fibroblasts (MEF cells) were isolated from embryonic day E15.5 male embryos, either wild-type (WT) or knockout for Ing1 (Ing1-/-), Gadd45a (Gadd45a-/-) or Ing1/Gadd45a (double knockout, DKO), and cultured for 3 passages. Samples were then collected in duplicates per MEF line for expression array profiling.

ORGANISM(S): Mus musculus

SUBMITTER: Emil Karaulanov 

PROVIDER: E-GEOD-43318 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Ing1 functions in DNA demethylation by directing Gadd45a to H3K4me3.

Schäfer Andrea A   Karaulanov Emil E   Stapf Ulrike U   Döderlein Gabi G   Niehrs Christof C  

Genes & development 20130201 3


Active DNA demethylation regulates epigenetic gene activation in numerous processes, but how the target site specificity of DNA demethylation is determined and what factors are involved are still poorly understood. Here we show that the tumor suppressor inhibitor of growth protein 1 (Ing1) is required for targeting active DNA demethylation. Ing1 functions by recruiting the regulator of DNA demethylation growth arrest and DNA damage protein 45a (Gadd45a) to histone H3 trimethylated at Lys 4 (H3K4  ...[more]

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