Journal
EUROPEAN JOURNAL OF CANCER
Volume 42, Issue 9, Pages 1219-1224Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ejca.2006.01.031
Keywords
breast cancer; breast cancer-initiating cells; breast cancer stem cells; isolation of breast cancer stem cells; mammary stem cells; mammospheres; in vitro propagation
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The theory that cancer may be originated and sustained by a small proportion of stem-like, self-renewing cells (termed 'cancer stem cells') has gained support in recent years. Breast cancer stem cells have been identified as CD44(+)CD24(-) breast tumour cells and have recently been isolated and propagated in vitro. It has been demonstrated that these cells exclusively retain the ability to form new tumours in mouse models and that they display stem/progenitor cell properties. The ability to identify breast cancer stem cells in vivo and to propagate them in vitro provides the means to compare them with normal cells, in order to investigate from which cell they originate, which molecular alterations critically affect them, and how they interact with the microenvironment. Elucidation of these critical points is essential to develop new therapeutic strategies and to improve diagnosis and prognosis for breast cancer patients. (c) 2006 Elsevier Ltd. All rights reserved.
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