Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Expression data from early and late passages of OVDM1 cell line and the original metastatic tumor

ABSTRACT: OVDM1, a new ovarian cell line derived from a serous ovarian metastatic adenocarcinoma sample, was established by immortalization with SV40 large-T antigen and hTERT and then characterized Expression microarrays were used for molecular profiling of early and late passages of OVDM1 cell line, as well as the original metastatic tumor. Total RNA was extracted from early and late passages of OVDM1 and from the metastatic tumor for hybridization on Affymetrix microarrays

ORGANISM(S): Homo sapiens

SUBMITTER: Anna Roschke

PROVIDER: E-GEOD-70264 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Fibroblast growth factor-2 delays the loss of chondrogenic potential in adult bone marrow-derived mesenchymal stem cells; We compared human mesenchymal stem cells (hMSCs), expanded long-term with and without fibroblast growth factor (FGF) supplementation, with respect to their proliferation rate, and ability to differentiate along the chondrogenic pathway in vitro. hMSCs expanded in FGF-supplemented medium proliferated more rapidly than those expanded under control conditions. Aggregates of FGF-treated cells exhibited chondrogenic differentiation at passages 1 through 7, although, in some of the preparations, chondrogenic differentiation was somewhat diminished after seventh passage. Aggregates made with control cells differentiated along the chondrogenic lineage at first passage but exhibited only marginal chondrogenic differentiation after four passages and failed to form cartilage after seven passages. Microarray analysis of gene expression identified 334 transcripts that were differentially expressed in fourth passage control cells which had reduced chondrogenic potential compared to fourth passage FGF-treated cells which retained this differentiation capacity and 243 transcripts that were differentially expressed when comparing them to first passage control cells which were also capable of differentiating into chondrocytes. The intersection of these analyses yielded 49 transcripts that were differentially expressed in cells that exhibited chondrogenic differentiation in vitro compared to cells that did not. These preliminary data must now be validated to verify whether the different gene expression profiles translate into functional differences. These findings suggest that care should be exercised when extensively expanding these cells for cartilage tissue engineering applications. Experiment Overall Design: hMSCs from three different donors were expanded for up to seven passages with or without FGF supplementation. At the end of first, fourth and seventh passages the chondrogenic potential and gene expression progfiles were analyzed.

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Expression data from early and late passages of OVDM1 cell line and the original metastatic tumor

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