Devel Cell:乳腺癌“偷取”乳腺干细胞能量进行癌症扩散转移的机制

2014-08-14 佚名 生物谷

怀孕期间,某些激素或可诱发特殊的乳腺干细胞产生催乳细胞以备哺乳;近日,刊登在国际著名杂志Developmental Cell上的一篇研究论文中,来自加利福尼亚大学圣地亚哥医学院的研究人员通过研究发现,和怀孕乳腺相关的乳腺干细胞或许和乳腺癌的干细胞直接相关。 研究者Jay Desgrosellier教授表示,我们鉴别出了和恶性乳腺癌相关的一种分子路径,其也是个体在怀孕期间乳腺干细胞促进泌乳所必

怀孕期间,某些激素或可诱发特殊的乳腺干细胞产生催乳细胞以备哺乳;近日,刊登在国际著名杂志Developmental Cell上的一篇研究论文中,来自加利福尼亚大学圣地亚哥医学院的研究人员通过研究发现,和怀孕乳腺相关的乳腺干细胞或许和乳腺癌的干细胞直接相关。

研究者Jay Desgrosellier教授表示,我们鉴别出了和恶性乳腺癌相关的一种分子路径,其也是个体在怀孕期间乳腺干细胞促进泌乳所必须的一种路径。揭示怀孕期间乳腺发育的基础机理对于理解恶性乳腺癌的发病机制以及新型疗法的开发非常关键,阻断该分子路径的特殊药物或许可以干扰乳腺癌的恶化过程。

个体怀孕期间一种新型的乳腺干细胞群体就会产生,这些干细胞会改变乳腺结构,促进乳腺产生泌乳腺体来哺育即将出生的婴儿;正常情况下乳腺干细胞仅仅和早期乳腺重塑过程相关,而随着哺乳的开始其功能就会被关闭。研究者发现,怀孕期间干细胞的信号调节可以被癌细胞阻断,进而产生更多恶性的乳腺癌组织。

至今,科学家们仍不清楚关于怀孕和乳腺癌发生之间的关联,这两者之间的关系非常复杂,个体人生后期怀孕可以降低其患乳腺癌的风险,而对于每一个怀孕的个体来讲,怀孕都会增加其患恶性乳腺癌的短期风险。这项研究中研究人员揭示,怀孕期间对干细胞行为功能非常重要的分子或许会引发和怀孕相关的恶性乳腺癌的发生

目前研究者们重点对一种名为结合素类的细胞表面受体蛋白家族进行研究,这种受体蛋白可以扮演关键的“通信系统”,研究者表示,这些受体蛋白家族中的一员—β-3结合素(又名CD61)其和乳腺癌细胞的转移及对癌症药物的耐受直接相关。

Cheresh博士指出,CD61或许可以作为怀孕和癌症发生过程中乳腺发育信号路径中的一种较好的标志物,其可以被很容易地检测到,并且用于进行诊断和进行乳腺癌的治疗。检测CD61或许可以帮助医生们确定治疗乳腺癌的方法,本文的研究也可帮助科学家们开发阻断CD61信号的药物,从而开发更加有效的乳腺癌靶向疗法。

原始出处:

Jay S. Desgrosellieremail, Jacqueline Lesperance, Laetitia Seguin, Maricel Gozo, Shumei Kato, Aleksandra Franovic, Mayra Yebra, Sanford J. Shattil, David A. Cheresh.Integrin αvβ3 Drives Slug Activation and Stemness in the Pregnant and Neoplastic Mammary Gland.Developmental Cell.doi:10.1016/j.devcel.2014.06.005

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    2015-06-06 维他命
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    2015-02-01 fzwish20000
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