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Review: Breast cancer stem cells. - GreenMedInfo Summary

Abstract Title:

Breast cancer stem cells.

Abstract Source:

Int J Biochem Cell Biol. 2012 Apr ;44(4):573-7. Epub 2012 Jan 9. PMID: 22249027

Abstract Author(s):

Marco A Velasco-Velázquez, Nora Homsi, Marisol De La Fuente, Richard G Pestell

Article Affiliation:

Department of Cancer Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA. marcovelasco@unam.mx

Abstract:

Breast cancer stem cells (BCSCs) constitute a subpopulation of tumor cells that express stem cell-associated markers and have a high capacity for tumor generation in vivo. Identification of BCSCs from tumor samples or breast cancer cell lines has been based mainly on CD44(+)/CD24(-/low) or ALDH(+) phenotypes. BCSCs isolation has allowed the analysis of the molecular mechanisms involved in their origin, self-renewal, differentiation into tumor cells, resistance to radiation therapy and chemotherapy, and invasiveness and metastatic ability. Molecular genetic analysis using knockout animals and inducible transgenics has identified NF-κB, c-Jun, p21(CIP1), and Forkhead-like-protein Dach1 involvement in BCSC expansion and fate. Clinical analyses of BCSCs in breast tumors have found a correlation between the proportion of BCSCs and poor prognosis. Therefore, new therapies that specifically target BCSCs are an urgent need. We summarize recent evidence that partially explain the biological characteristics of BCSCs.

Study Type : Review
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