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Accession IconGSE25976

Expression profiles of CD24-/CD44+/ESA+ population in MDA-MB-231 and its highly metastatic variants.

Organism Icon Homo sapiens
Sample Icon 6 Downloadable Samples
Technology Badge Icon Affymetrix Human Gene 1.0 ST Array (hugene10st)

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Description
Breast cancer is a curable disease if it is diagnosed at an early stage. However, only little options are left once the tumor is metastasized to distant organs, and more than 90% of breast cancer death is attributed to metastatic disease. The process of metastasis is highly complex and involves many steps for successful colonization of tumor cells at a target organ. According to the cancer stem cell (CSC) theory, which still remains a hypothesis, these metastatic cells must have stem cell-like capability for their self-renewal in addition to their invasive ability. Therefore, it has been predicted that a metastatic stem cell, which is distinct from a cancer stem cell, must exist in the primary tumor mass. To identify genes that are involved in metastasis of CSCs, we isolated CSC populations from a well-established model cell line of breast cancer, MDA-MB231, and that of highly metastatic variants, 231BoM-1833 and 231BrM-2a, using CD24, CD44 and EpCAM (ESA), which have been identified as surface markers for CSCs in breast cancers. Overall yield of CSCs from these cells ranged from 2% to 4%. We then performed global expression profile analysis for these CSCs using the Affymetrix Human Gene 1.0ST array.
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