Breast cancer stem cells.

Breast cancer stem cells.
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DOI:
10.1016/j.biocel.2011.12.020
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发表时间:
2012-04
影响因子:
4
通讯作者:
Pestell, Richard G.
Pestell, Richard G.
中科院分区:
生物学2区
文献类型:
--
作者:
Velasco-Velazquez, Marco A.;Homsi, Nora;De La Fuente, Marisol;Pestell, Richard G.

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乳腺癌干细胞(BCSC)是一种表达干细胞相关标志物的肿瘤细胞亚群,在体内具有高的肿瘤生成能力。从肿瘤样本或乳腺癌细胞系中鉴定BCSC主要基于CD 44 +/CD 24-/低或ALDH+表型。BCSC的分离已经允许分析涉及其起源、自我更新、分化成肿瘤细胞、对放射疗法和化学疗法的抗性以及侵袭性和转移能力的分子机制。使用敲除动物和诱导型转基因的分子遗传学分析已经鉴定了BCSC扩增和命运中的NF-κB、c-Jun、p21 CIP 1和叉头样蛋白Dach 1。乳腺肿瘤中BCSC的临床分析发现BCSC的比例与预后不良之间存在相关性。因此,迫切需要特异性靶向BCSC的新疗法。我们总结了最近的证据,部分解释BCSCs的生物学特性。
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 have identified NF-κB, c-Jun, p21CIP1, and Forkhead-like-protein Dach1 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.
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