Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling by array of human CD138 purified bome marrow plasma cells from patients with mutliple myeloma or monoclonal gammopathy of unknown significance

ABSTRACT: Gene expression profiling of CD138 purified bone marrow plasma cells of previously untreated multiple myeloma patients and individual with monoclonal gammopathy of unknown significance (MGUS)

ORGANISM(S): Homo sapiens

DISEASE(S): monoclonal gammopathy of unknown significance (MGUS)

SUBMITTER: Dirk Hose

PROVIDER: E-MTAB-317 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Clinical and prognostic role of annexin A2 in multiple myeloma.

Seckinger Anja A Meissner Tobias T Moreaux Jérôme J Depeweg Daniela D Hillengass Jens J Hose Katja K Rème Thierry T Rösen-Wolff Angela A Jauch Anna A Schnettler Reinhard R Ewerbeck Volker V Goldschmidt Hartmut H Klein Bernard B Hose Dirk D

Blood 20120615 5

Annexin A2 (ANXA2) promotes myeloma cell growth, reduces apoptosis in myeloma cell lines, and increases osteoclast formation. ANXA2 has been described in small cohorts of samples as expressed by myeloma cells and cells of the BM microenvironment. To investigate its clinical role, we assessed 1148 samples including independent cohorts of 332 and 701 CD138-purified myeloma cell samples from previously untreated patients together with clinical prognostic factors, chromosomal aberrations, and gene e ...[more]

PMID: 22705595

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Project description:Fibroblasts are a key cellular component of tumour microenvironment, along with other stromal cells playing a critical role in disease initiation and progression (1). In this study, bone marrow fibroblasts deriving from patients with monoclonal gammopathy of undetermined significance (MGUS) or active multiple myeloma (MM) were subjected to global gene expression analysis, in order to identify progression-associated alterations of gene expression. Through immunoselection procedures, primary coltures of bone marrow fibroblasts were established from bone marrow aspirate of 18 patients fullfilling the International Myeloma Working Group diagnostic criteria for MM (n=10) and MGUS (n=8). Differentially expressed genes were investigated through cDNA microarray (21,329 70-mer oligonucleotides; dual-label competitive hybridization), using the reference design as experimental protocol and t-test statistics for identifying differentially expressed genes. A number of genes functionally involved in survival, proliferation, motility, inflammation and angiogenesis were found to be up-regulated in bone marrow fibroblasts from MM patients with respect to MGUS patients. In parallel, several genes were down-regulated in MM fibroblasts. Overall, bone marrow fibroblasts from MM patients show a distinct gene expression pattern that differentiates them from bone marrow fibroblasts of MGUS. The observation of differentially expressed genes indicates an activation state of fibroblasts in MM, which very likely concur to determine a microenvironment supporting disease progression. 1) 1. Kalluri R, Zeisberg M: Fibroblasts in cancer. Nat Rev Cancer 2006; 6: 392 â401. Bone marrow fibroblasts deriving from patients with monoclonal gammopathy of undetermined significance (MGUS) and active multiple myeloma (MM), were provided by A.Vacca, (Department of Biomedical Sciences and Human Oncology, UniversitÃ degli Studi di Bari Aldo Moro, Italy). Briefly, primary coltures of bone marrow fibroblasts were established through immunoselection procedures on aspirates of 18 patients fullfilling the IMWG diagnostic criteria for active MM (n=10) and MGUS (n=8). Total RNA was extracted from each primary culture (test samples), and 1 Î¼g-aliquots of RNA from MGUS samples were pooled to obtain the reference RNA. Linear amplification of mRNA and fluorescent labelling of cDNA targets (Cy5, MM and MGUS test samples; Cy3, reference RNA) were performed by using the Amino Allyl MessageAmp II aRNA Amplification Kit (Ambion), and examined on Micro-CRIBI Human Oligo Array (Operon V2.0) microarrays. Array scanning was carried out using a VersArray ChipReaderÂ® 5Î¼m dual confocal laser scanner with VersArray ChipReader v3.1 analysis software , while row scanner images were analyzed with VersArray Analyzer Software v4.5 (Bio-Rad Laboratories) using media pixel intensities for each spot. Global background was subtracted by biquadratic polynomial approximation, and cross-channel normalization was performed by local regression (LOESS); logarithmic transformation was then performed for each expression level.

Dataset Information

Transcription profiling by array of human CD138 purified bome marrow plasma cells from patients with mutliple myeloma or monoclonal gammopathy of unknown significance

Publications

Clinical and prognostic role of annexin A2 in multiple myeloma.

Similar Datasets

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