GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
Series GSE26725 Query DataSets for GSE26725
Status Public on Mar 01, 2011
Title Gene expression analysis of 12 B-cell Chronic Lymphocytic Leukemia samples and 5 CD19+ control samples
Organism Homo sapiens
Experiment type Expression profiling by array
Summary Elevated levels of microRNA miR-155 represent a candidate pathogenic factor in chronic B-lymphocytic leukemia (B-CLL). In this study, we present evidence that MYB (v-myb myeloblastosis viral oncogene homolog) is overexpressed in a subset of B-CLL patients. MYB physically associates with the promoter of MIR155 host gene (MIR155HG, also known as BIC, B-cell integration cluster) and stimulates its transcription. This coincides with the hypermethylated histone H3K4 residue and spread hyperacetylation of H3K9 at MIR155HG promoter. Our data provide evidence of oncogenic activities of MYB in B-CLL that include its stimulatory role in MIR155HG transcription.
We have studied differentially expressed genes in the whole genome and also in the preselected groups of MYB target genes and miR-155 microRNA predicted targets.
Overall design This study was intended to investigate differentially expressed genes mRNA in 12 B-CLL patient peripheral blood samples in comparison with 5 CD19+ healthy donor peripheral blood samples.
Contributor(s) Stopka T, Trněný M, Vargová K, Zavadil J, Kulvait V
Citation(s) 21296997
Submission date Jan 19, 2011
Last update date Mar 25, 2019
Contact name Vojtěch Kulvait
Phone +420224965968
Organization name Charles University in Prague - 1st Faculty of Medicine
Department Institute of Pathological Physiology
Lab Centrum for experimental haematology
Street address U Nemocnice 5
City Prague 2
ZIP/Postal code 128 53
Country Czech Republic
Platforms (1)
GPL570 [HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array
Samples (17)
GSM658010 Control PB C106
GSM658011 Control PB C103
GSM658012 Control PB C107
BioProject PRJNA136137

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE26725_RAW.tar 77.6 Mb (http)(custom) TAR (of CEL)
Raw data provided as supplementary file
Processed data included within Sample table

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap