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Nat Med:血液样本为跟踪肺癌提供新的方法

2014-06-06 佚名 不详

日前,来自英国曼彻斯特大学的研究人员示范了如何利用肺癌患者的血液样本来监视及预测他们对于治疗的反应,从而为个体化治疗这一疾病铺平了道路。这项刊登在《自然-医学》(Nature Medicine)杂志上的最新研究还为在实验室中展开新疗法测试及更好地了解肿瘤的耐药机制提供了一种方法。 小细胞肺癌(SCLC)是一种存活率较差的侵袭性癌症,迫切需要新的治疗方法。在许多情况下肿瘤不能施行手术,也难于获得活

日前,来自英国曼彻斯特大学的研究人员示范了如何利用肺癌患者的血液样本来监视及预测他们对于治疗的反应,从而为个体化治疗这一疾病铺平了道路。这项刊登在《自然-医学》(Nature Medicine)杂志上的最新研究还为在实验室中展开新疗法测试及更好地了解肿瘤的耐药机制提供了一种方法。

小细胞肺癌(SCLC)是一种存活率较差的侵袭性癌症,迫切需要新的治疗方法。在许多情况下肿瘤不能施行手术,也难于获得活组织标本,科学家们只能通过很少的样本来研究这一疾病。现在,科学家们检测了利用循环肿瘤细胞( CTCs ,从肿瘤脱落下来,在血液中循环的细胞)以一种微创方式来调查患者疾病的潜能。

他们证实相比于罹患其他癌症类型的患者,SCLC患者的血液样本中具有更多的 CTCs 。重要的是,对于每位患者而言 CTCs 的数量都与他们的生存相关——血液中 CTCs 越少的患者生存的时间越长。论文资深作者 Caroline Dive 教授表示:“获得足够的肿瘤组织是我们充分了解SCLC生物学的一个主要障碍。这一液体活检法简单且不具侵袭性,因此易于进行重复操作,使得我们能够研究每位肺癌患者个体肿瘤的遗传学。这也意味着我们有可能得到了一种可行的方法来监测患者对治疗反应,有望让我们能够针对每位患者个体化地定制治疗方案。”

此外,研究人员还利用这些 CTCs 在小鼠体内培养出了肿瘤模型,他们将之命名为 CTC 衍生的移植物(CTC-derived explants,CDXs)。当他们用治疗SCLC患者的相同化疗药物处理这些小鼠时,它们显示出与每个供体患者相同的 CDXs 反应。Dive 说:“我们可以利用这些模型来帮助我们了解为什么那么多的SCLC患者会对化疗产生耐药,并寻找和测试潜在的靶向治疗。”

原始出处

Hodgkinson CL1, Morrow CJ1, Li Y2, Metcalf RL3, Rothwell DG3, Trapani F3, Polanski R3, Burt DJ3, Simpson KL3, Morris K3, Pepper SD4, Nonaka D5, Greystoke A6, Kelly P3, Bola B3, Krebs MG3, Antonello J3, Ayub M3, Faulkner S3, Priest L3, Carter L3, Tate C3, Miller CJ7, Blackhall F8, Brady G1, Dive C1.Tumorigenicity and genetic profiling of circulating tumor cells in small-cell lung cancer.Nat Med. 2014 Jun 1

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    2015-01-07 liye789132251
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    2015-05-09 zhzhxiang
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    2014-06-08 docwu2019

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