The multiprotein Mediator complex is an important regulator of RNA polymerase II-dependent genes in eukaryotic cell. In contrast to the situation in many other eukaryotes, the conserved Med15 protein is not a stable component of Mediator isolated from fission yeast. We now demonstrate that Med15 exists in a protein complex together with Hrp1, an ATP-dependent chromatin remodeling protein. The Med15/Hrp1 subcomplex is not a component of the core Mediator complex, but can interact with the repressive L-Mediator conformation. Deletion of MED15 and HRP1 cause similar effects on global steady-state levels of mRNA, but only MED15 is required for galactose-dependent activation of the inv1 gene. Hrp1 has been found in complex with other proteins and genome-wide analysis demonstrates that Med15 only associates with a distinct subset of Hrp1-bound gene promoters. Global analysis reveals that Hrp1-binding normally is associated with increased histone H3 density, but at promoters also bound by Med15, histone H3 density is instead increased. Our findings reveal that Med15 functions as a separate entity in fission yeast and indicate that the function and organization of the Mediator complex may differ significantly between eukaryotes.
A chromatin-remodeling protein is a component of fission yeast mediator.
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View SamplesDietary lipids and gut microbiota may both influence adipose tissue physiology. By feeding conventional and germ-free mice high fat diets with different lipid compositon we aimed to investigate how dietary lipids and the gut microbiota interact to influence inflammation and metabolism in epididymal adipiose tissue (EWAT)
Crosstalk between Gut Microbiota and Dietary Lipids Aggravates WAT Inflammation through TLR Signaling.
Sex, Age, Specimen part
View SamplesDietary lipids and gut microbiota may both influence adipose tissue physiology. By feeding conventional and germ-free mice high fat diets with different lipid compositon we aimed to investigate how dietary lipids and the gut microbiota interact to influence inflammation and metabolism in the liver
Interaction between dietary lipids and gut microbiota regulates hepatic cholesterol metabolism.
Age, Specimen part
View SamplesTranscriptomic profiling of normal mouse thyroid tissue following 211At irradiation
Transcriptional response of BALB/c mouse thyroids following in vivo astatine-211 exposure reveals distinct gene expression profiles.
Specimen part
View SamplesNF1-C2 suppresses tumorigenesis and epithelial-to-mesenchymal transition by repressing FoxF1.
Forkhead Box F1 promotes breast cancer cell migration by upregulating lysyl oxidase and suppressing Smad2/3 signaling.
Specimen part, Cell line
View SamplesBrain of the foxf2 mutant mouse embryo shows microvascular aneurysm, underdeveloped blood brain barrier and also significant defects in the tissue integrity. Foxf2 expresses in the pericytes of the brain and seem to play an important role in proper development of the BBB.
No associated publication
Specimen part
View SamplesNF1-C2 suppresses tumorigenesis and epithelial-to-mesenchymal transition by repressing FoxF1. We used microarray to identify direct targets for NF1-C2.
Nuclear Janus-activated kinase 2/nuclear factor 1-C2 suppresses tumorigenesis and epithelial-to-mesenchymal transition by repressing Forkhead box F1.
Specimen part, Cell line
View SamplesMitotic entry is accompanyed by the expression of a cluster of so called mitotic genes, whose activation is critical for mitosis in human and yeast cells. We found a link between the transcription machinery and cell cycle control network at mitosis in fission yeast, involving the Cdk8 kinase dependent phosphorylation of the fork head transcription factor Fkh2. We have generated a non-phosphorylatable fkh2 mutant (fkh2-S2A) also.
Cyclin-dependent kinase 8 regulates mitotic commitment in fission yeast.
No sample metadata fields
View SamplesWe have used microarrays to study the gene expression changes in Overexpression of GST,GST-Med3 of yeast cells to detect how the overexpressioin may affect global gene expression.
Mediator tail subunits can form amyloid-like aggregates in vivo and affect stress response in yeast.
No sample metadata fields
View SamplesGenomic and expression profiling using 38K BAC array-CGH and Illumina HT-12 beadchips were performed on 97 diploid invasive breast tumors to assess the impact of gene dosage on gene expression patterns and the effect of other mechanisms on transcriptional levels. Patient stratification was performed according to axillary lymph node status (node-negative, pN0; node-positive, pN1) and overall survival (>8-year survivors; breast cancer-specific mortality within 8 years of diagnosis). Array-CGH results was validated by FISH using tumors showing HER2/neu gene amplification and expression profiling was confirmed using qPCR for 16 transcripts.
Clinical implications of gene dosage and gene expression patterns in diploid breast carcinoma.
Disease, Disease stage
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