Transcription profiling of human primary breast cancer panel (Nottingham)
Ontology highlight
ABSTRACT: Total RNA from 128 primary breast tumors was labelled using the Illumina TotalPrep RNA Amplification kit (Ambion) following manufacturers instructions. 1.5 ug of biotin-labelled cRNA were used for each hybridisation on Sentrix Human-6 BeadChips v1.0 (Illumina, San Diego, CA) following manufacturers protocol.
Project description:Total RNA from seven breast cell lines and one normal RNA samples was labelled using the Illumina TotalPrep RNA Amplification kit (Ambion) following manufacturer's instructions. 1.5 ug of biotin-labelled cRNA were used for each hybridisation on Sentrix Human-6 BeadChips (Illumina, San Diego, CA) following manufacturer's protocol.
Project description:Total RNA from 46 breast cell lines was labelled using the Illumina TotalPrep RNA Amplification kit (Ambion) following manufacturer�s instructions. 1.5 �g of biotin-labelled cRNA were used for each hybridisation on Sentrix Human-6 v1 BeadChips (Illumina, San Diego, CA) following manufacturer�s protocol.
Project description:Expression analysis of K14Sin3afl/flCreER,K14Mycfl/flCreER and K14Sin3aMycfl/flCreER effects on gene expression in adult mouse skin. We used a conditional knock out strategy to delete Sin3a and/or c-Myc specifically in adult mouse K14 positive keratinocytes and analysed the resulting changes in gene expression by means of microarrays.
Project description:Homologous sets of transcription factors direct conserved tissue-specific transcription, yet transcription factor binding events diverge rapidly between closely related species. We used hepatocytes from a Down syndrome mouse model containing human chromosome 21 (TC1) to determine whether human genetic sequence or mouse nuclear environment primarily determines tissue-specific transcriptional regulation. Virtually all transcription factor binding locations, transcription initiation events and the resulting gene expression observed in human hepatocytes are recapitulated across the entire human chromosome 21 in the mouse nucleus. Thus, in homologous tissues, genetic sequence is largely responsible for directing transcriptional programs, and interspecies differences in epigenetics, cellular environment, and transcription factors themselves play secondary roles.
Project description:Expression analysis of CEBPa knockout effects on gene expression in adult mouse liver. We used a conditional knock out strategy to delete CEBPa specifically in adult mouse hepatocytes and analysed the resulting changes in gene expression by means of microarrays.
Project description:Administration of low-dose IL-2 prevents and cures type 1 diabetes (T1D) in NOD mice by boosting pancreatic regulatory T cells (Tregs) and is currently being evaluated in humans. Here, to improve treatment efficacy we tested higher IL-2 doses that, despite further boosting Tregs, rapidly precipitated T1D in pre-diabetic mice due to generalized immune activation. Although the combination of rapamycin (RAPA) plus IL-2 prevents NOD T1D development, a recent clinical trial translating this strategy into patients was halted due to C-peptide decline. Here, we show that RAPA/IL-2 combination was also ineffective to cure new onset T1D in mice and, surprisingly, RAPA broke IL-2-induced tolerance in a reversible way. RAPA partially counteracted IL-2 effects on Tregs and the combined treatment unexpectedly, impaired glucose homeostasis at multiple levels, possibly explaining the clinical outcome. Our data help understand IL-2 alone or RAPA/IL-2 combination limitations and could lead to the design of improved T1D therapies.
Project description:Analysis of synoviocytes cell form patients suffering of Rheumatoid arthritis and depleted for clusterin by siRNA knockdown. Note: this experiment was reloaded into ArrayExpress on 2nd December 2009 because the incorrect array design had originally been selected. The identifiers in the datafile were also fixed to match the array design.
Project description:To obtain the molecular signature of the effect that the IL-2 therapeutic dose induces on T cells in vivo, we performed gene array analysis. Since it was critical to perform this analysis on highly purified Tregs and Teffs, and also because activated Teffs can acquire CD25 expression, we used GFP-Foxp3 knock-in mice which allow for the purification of Tregs and Teffs based on the GFP expression. Illumina gene array was carried out on FACS sorted CD4+ GFP+ (Tregs) and CD4+ GFP- (Teffs) of mice that received either PBS or the curative schedule of IL-2, 2 hours after the last injection.<br><br>Further raw data files are available on the FTP site for this experiment.