Whole-transcript expression data from normal and DLBCL human peripheral blood samples
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE83632 | GEO | 2016/07/06
SECONDARY ACCESSION(S): PRJNA326532
REPOSITORIES: GEO
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Project description:Gene expression profiling based classification of DLBCL patients versus healthy donors provides insights on transcriptional regulation processes. Within the most represented pathways in DLBCL, we identified an innate immune response signature, as well as an anti-inflammatory response. On the other hand, a significant under-representation of pathways involved in T-cell activation was also revealed. Whole blood from 76 DLBCL patients and 87 healthy donors was collected into PAXgene Blood RNA tubes (Becton Dickinson BD Biosciences, San Jose, CA, USA) ensuring blood stabilization and stored at -80°C before RNA extraction. Total RNA, after globin mRNA depletion, was hybridized onto Affymetrix GeneChip® Human Exon 1.0 ST oligonucleotide arrays (Affymetrix, Santa Clara, CA, USA) according to manufacturerâs instructions.
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Project description:We performed array comparative genomic hybridization (aCGH) and gene expression profiling in 203 samples of diffuse large B cell lymphoma (DLBCL). By gene expression, at least three molecular subtypes of DLBCL termed as germinal center B cell-like (GCB) DLBCL, activated B cell-like (ABC) DLBCL, and primary mediastinal B cell lymphoma (PMBL) can be distinguished. Combining gene expression profiling and aCGH, revealed copy number abnormalities that had strikingly different frequencies in the three molecular DLBCL subtypes. These data provide genetic evidence that the DLBCL subtypes are distinct diseases that utilize different oncogenic pathways. Keywords: clinical history design The retrospective study included RNA and DNA extracted from 203 clinical samples.
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