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Molecular characteristics of cancer stem-like cells derived from human breast cancer cells.


ABSTRACT: We characterized the cellular properties of cancer stem-like cells (CSLCs) isolated from immortalized MDA-MB453 human breast cancer cells in culture. We showed that although the expression of Octamer-binding transcription factor-4 (OCT4) correlates to stemness in these CSLCs, OCT4 knockdown does not induce their differentiation. Our results suggest that the differentiation program in MDA-MB453 CSLCs is blocked at a step upstream of the transcription of the OCT4 promoter, allowing CSLCs to maintain their population through asymmetric cell division during many repeated passages. Comparative expression analysis indicates that only a subset of genes and signaling pathways known to be associated with survival and maintenance of CSCs are selectively expressed in CSLCs, as compared with non-CSLCs fractionated from the same parental MDA-MB453 cells. These results suggest that selective expression of a limited number of genes may be sufficient for establishment and maintenance of CSLCs with high tumorigenicity.

SUBMITTER: Yoo YD 

PROVIDER: S-EPMC3600631 | biostudies-literature | 2013 Mar

REPOSITORIES: biostudies-literature

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Molecular characteristics of cancer stem-like cells derived from human breast cancer cells.

Yoo Young Dong YD   Han Dong Hoon DH   Jang Jun Min JM   Zakrzewska Adriana A   Kim Seog-Young SY   Choi Cheol Yong CY   Lee Yong Jun YJ   Kwon Yong Tae YT  

Anticancer research 20130301 3


We characterized the cellular properties of cancer stem-like cells (CSLCs) isolated from immortalized MDA-MB453 human breast cancer cells in culture. We showed that although the expression of Octamer-binding transcription factor-4 (OCT4) correlates to stemness in these CSLCs, OCT4 knockdown does not induce their differentiation. Our results suggest that the differentiation program in MDA-MB453 CSLCs is blocked at a step upstream of the transcription of the OCT4 promoter, allowing CSLCs to mainta  ...[more]

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