Dataset Information


Normal human osteoblasts and SKBR3 mono and coculture

ABSTRACT: As a model for investigating changes in gene expression in response to epithelial-osteoblast interactions in bone metastases of breast carcinomas, cells that represented malignant epithelial cell compartments (SKBR3) and cells that represented skeletal compartments (Normal Human (NH) Osteoblasts) were examined in an in vitro mixed co-culture setting. These two types of cells were co-cultivated for 48 h in a low-serum medium [0.2% fetal bovine serum (FBS)] to allow reciprocal signal exchange with minimal background from undefined molecular signals that are inherent in fetal bovine serum. We examined the effects of co-cultivation on each cell pairing in two independent biological replicates. The gene expression profiles of the co-cultures were compared to the expression profiles of the corresponding cells that were kept in monoculture using HEEBO microarrays. After mono or co-culturing, total RNA was extracted and amplified using a modified Eberwine procedure. The amplified RNA was labeled with the fluorescent dye Cy5 and pooled with Cy3 labeled reference RNA, and then the pooled RNA was hybridized onto HEEBO microarrays. After hybridization and washing, arrays were scanned on a fluorescent microscope scanner. An all pairs experiment design type is where all labeled extracts are compared to every other labeled extract.

ORGANISM(S): Homo sapiens

SUBMITTER: Michal Rajski 

PROVIDER: E-GEOD-29034 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Global gene expression analysis of the interaction between cancer cells and osteoblasts to predict bone metastasis in breast cancer.

Rajski Michal M   Vogel Brigitte B   Baty Florent F   Rochlitz Christoph C   Buess Martin M  

PloS one 20120103 1

<h4>Background</h4>Bone metastasis is a main cause of morbidity in breast cancer. Since breast cancer is a heterogeneous disease, the interactions of cancer cells with the skeletal host cells might also be diverse. We hypothesized that gene expression signatures induced by heterotypic interaction of breast cancer cells and osteoblasts might be of clinical relevance.<h4>Methodology/principal findings</h4>We established an ex vivo co-culture model using benign breast epithelial cells or a panel of  ...[more]

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