NAT COMMUN:肿瘤细胞恶化前会变“硬”

2017-07-12 佚名 生物通

乳腺癌的病程可能需要几个阶段,如最开始的良性和病变后的浸润癌,可能还会发生转移。只有20-50%的良性肿瘤最终会发展成为浸润癌。病变前的早期预测判断疾病的严重程度,从而选择相应的治疗手段。

乳腺癌的病程可能需要几个阶段,如最开始的良性和病变后的浸润癌,可能还会发生转移。只有20-50%的良性肿瘤最终会发展成为浸润癌。病变前的早期预测判断疾病的严重程度,从而选择相应的治疗手段。

共聚焦显微镜下用鬼笔环肽染色的肿瘤细胞骨架(来源:Nature Communications)

Florence Janody课题组一直在寻找良性肿瘤预测的细胞信号。细胞骨架是他们的注意点。细胞内部的负责纤维网络可以承力也可以发力,这些纤维结构赋予细胞刚性和柔韧性。这种结构可能会影响肿瘤的侵袭和恶化。

有研究报道指出,癌细胞侵袭前肿瘤细胞先需要软化。而本文却发现,在癌细胞成为侵袭细胞前,存在一个短暂的硬化状态,细胞骨架纤维的积累导致了这种现象。

研究小组发现细胞硬化可以促进细胞增殖蛋白的活性,有利于肿瘤生长。更重要的是,细胞硬化是浸润癌的触发条件。使用体外人源乳腺癌细胞系以及乳腺癌活检样本检测不同时期的相关蛋白表达。随后,研究人员还在果蝇体内证实了这些蛋白质对肿瘤形成的作用。

不同时期的乳腺癌细胞蛋白表达芯片分析结果

该项工作是解决乳腺癌病程发展难题的组成部分,通过了解肿瘤细胞在前浸润期(pre-invasive)和获得恶性特征前的细胞内变化,可以帮助我们预测哪些肿瘤更容易发生转移,从而为其量身定制治疗更好的治疗方案。
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    2017-10-13 liuli5079
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    2018-01-16 liye789132251
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    2017-07-15 hfuym10906

    学习了学习了学习了学习了学习了

    0

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    2017-07-13 130****4638

    学习了谢谢分享

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