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ChIP-chip from HEK293-RPF-1 stable transfectants expressing the HA-tagged RPF-1 transcription factor

ABSTRACT: RPF-1 binds promoters of genes modulated by its induction in HEK/RPF-1 transfectant Chromatin IP (ChIP) combined to chromatin array analysis (ChIP-chip) shows that RPF-1 transcription factor bind to promoter elements of genes repressed or activated by RPF-1 expression

ORGANISM(S): Homo sapiens

PROVIDER: GSE55270 | GEO | 2016/09/06

SECONDARY ACCESSION(S): PRJNA239022

REPOSITORIES: GEO

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Project description:RPF-1, a transcription factors encoded by POU6F2 gene, appears to be expressed in the developing nervous system and embryonic kidney. We generated a stable HEK/RPF-1 transfectant expressing the protein in a tetracycline (Tet)-dependent induction and addressed the whole transcriptome regulated by RPF-1. We detected a gross alteration of gene expression that is consistent with its occupancy at proximal promoters, and gel retardation assay and promoter-reporter activity, addressing a few target genes, indicated a dependence by RPF-1 of transcriptional response. GO analysis supports a role for this factor in the genetic programs guiding early differentiation of embryonic kidney and neuronal fate. RPF-1, a transcription factors encoded by POU6F2 gene, appears to be expressed in the developing nervous system and embryonic kidney. We generated a stable HEK/RPF-1 transfectant expressing the protein in a tetracycline (Tet)-dependent induction and addressed the whole transcriptome regulated by RPF-1. We detected a gross alteration of gene expression that is consistent with its occupancy at proximal promoters, and gel retardation assay and promoter-reporter activity, addressing a few target genes, indicated a dependence by RPF-1 of transcriptional response. GO analysis supports a role for this factor in the genetic programs guiding early differentiation of embryonic kidney and neuronal fate. Gene array analysis shows that RPF-1 transcription factor modify the transcriptome of HEK293 cells by regulating a genetic program endowed with developmental programs Comparison of HEK293 cells induced for RPF-1 expression (Tet-) over uninduced control (Tet+) and Mock cells. RPF-1 cDNA was inserted into the pTRE2puro vector to generate stable Tet-inducible KEK293 transfectants. Upon Tet removal from the medium, HEK/RPF-1 transfectants expressed the transcription factor RPF-1. Cells were then seeded in 10 cm dishes, cultured for 48 h either in complete medium supplemented with Tet (+) or in Tet-depleted medium (-), harvested, and spun down before RNA isolation. Comparative analysis between HEK/RPF-1 induced (Tet-) and uninduced (Tet+) transfectants allowed us to identify genes transcriptionally regulated by RPF-1. Residual effects on gene expression due to Tet supplementation into culture media was ruled out by comparison with the Mock transfectant.

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ChIP-chip from HEK293-RPF-1 stable transfectants expressing the HA-tagged RPF-1 transcription factor

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