E-GEOD-45113 - Gene expression of CpG-activated memory B cells

Released on 13 March 2013, last updated on 2 June 2014
Homo sapiens
Samples (18)
Array (1)
Protocols (8)
During the human B cell (Bc) recall response, rapid cell division results in multiple Bc subpopulations. The TLR-9 agonist CpG oligodeoxynucleotide, combined with cytokines, causes Bc activation and division in vitro and increased CD27 surface expression in a sub-population of Bc. We hypothesized that the proliferating CD27lo subpopulation, which has a lower frequency of antibody-secreting cells (ASC) than CD27hi plasmablasts, provides alternative functions such as cytokine secretion, costimulation, or antigen presentation. We performed genome-wide transcriptional analysis of CpG activated Bc sorted into undivided, proliferating CD27lo and proliferating CD27hi subpopulations. Our data supported an alternative hypothesis, that CD27lo cells are a transient pre-plasmablast population, expressing genes associated with Bc receptor editing. Undivided cells had an active transcriptional program of non-ASC B cell functions, including cytokine secretion and costimulation, suggesting a link between innate and adaptive Bc responses. Transcriptome analysis suggested a gene regulatory network for CD27lo and CD27hi Bc differentiation. 18 B cell samples from 6 subjects. From each subject, 3 in vitro B cell populations were isolated: undivided cells, proliferating cells with low CD27 (marker of antibody secretion), proliferating cells with high CD27
Experiment type
transcription profiling by array 
Investigation descriptionE-GEOD-45113.idf.txt
Sample and data relationshipE-GEOD-45113.sdrf.txt
Raw data (1)E-GEOD-45113.raw.1.zip
Processed data (1)E-GEOD-45113.processed.1.zip
Array designA-AFFY-44.adf.txt