Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of mouse embryonic fibroblasts C57Bl/6x129/Sv F2 e14.5 embryos vs controls grown in hypoxic or normoxic conditions

ABSTRACT: The CH1 protein interaction domain of the transcriptional coactivators p300 and CBP is thought to interact with HIF-1alpha and this interaction is thought to be critical to the expression of HIF-1alpha target genes in response to hypoxia. To test the requirement of the CH1 domain for gene expression in response to hypoxia, rimary mouse embryonic fibroblasts (MEFs) were generated from C57Bl/6x129/Sv F2 e14.5 embryos that contain a deletion in the CH1 domain of three of four alleles of CBP and p300. The remaining allele of p300 or CBP was a conditional knock out allele. Control MEFs with only a single conditional knockout allele of p300 or CBP were also generated. At passage 3 MEFs were infected with Cre Adenovirus and grown until they had expanded at least 100 fold. Subconfluent MEFs were treated with 21% oxygen (normoxia) or 0.1% oxygen (hypoxia) with 5% carbon dioxide at 37 C in a humid chamber for 6hrs. At the start of treatment, medium was removed and replaced with medium (DMEM+10% FBS+pen-strep+ l-glu) that had been preequilibrated overnight in normoxia or hypoxia as appropriate. Immediately after treatment, cells were lysed in Trizol for RNA extraction. 12 samples; 4 genotypes [CBP+/flox (flox1), p300 +/flox (flox2), CBP CH1/flox;p300 CH1/CH1 (triCH1flox1),CBP CH1/CH1;p300 CH1/flox (triCH1flox2)] , 2 treatments (normoxia and hypoxia).

ORGANISM(S): Mus musculus

SUBMITTER: Paul Brindle 

PROVIDER: E-GEOD-3196 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Two transactivation mechanisms cooperate for the bulk of HIF-1-responsive gene expression.

Kasper Lawryn H LH   Boussouar Fayçal F   Boyd Kelli K   Xu Wu W   Biesen Michelle M   Rehg Jerold J   Baudino Troy A TA   Cleveland John L JL   Brindle Paul K PK  

The EMBO journal 20051020 22

The C-terminal activation domain (C-TAD) of the hypoxia-inducible transcription factors HIF-1alpha and HIF-2alpha binds the CH1 domains of the related transcriptional coactivators CREB-binding protein (CBP) and p300, an oxygen-regulated interaction thought to be highly essential for hypoxia-responsive transcription. The role of the CH1 domain in vivo is unknown, however. We created mutant mice bearing deletions in the CH1 domains (DeltaCH1) of CBP and p300 that abrogate their interactions with t  ...[more]

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