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SCI REP:如何克服癌症治疗的抵抗性?科学研究有新发现!

2017-04-28 枫丹白露 来宝网

牛津大学和莫菲特癌症研究中心合作的克利夫兰诊所研究人员已经证明了这样一个理论,虽然对癌症靶向治疗的耐受和抵抗确实是一个持久的目标,但有机会克服抵抗性的发展。虽然需要更多的研究,但研究人员认为理解和预测肿瘤抵抗可能会转化为临床环境中的其他治疗方案。随着癌细胞发展而产生的治疗抵抗力是今天靶向癌症治疗的主要限制之一。在这一进程中,癌细胞不仅改变了对用于治疗癌症的药物的反应,而且改变了许多其他药物。在某些


牛津大学和莫菲特癌症研究中心合作的克利夫兰诊所研究人员已经证明了这样一个理论,虽然对癌症靶向治疗的耐受和抵抗确实是一个持久的目标,但有机会克服抵抗性的发展。虽然需要更多的研究,但研究人员认为理解和预测肿瘤抵抗可能会转化为临床环境中的其他治疗方案。

随着癌细胞发展而产生的治疗抵抗力是今天靶向癌症治疗的主要限制之一。在这一进程中,癌细胞不仅改变了对用于治疗癌症的药物的反应,而且改变了许多其他药物。在某些情况下,它们变得容易受另一种药物的影响,称为抵抗敏感性。在其他情况下,两种药物同时被抵抗,称为交叉抗性。

由克利夫兰诊所转化血液学和肿瘤研究与放射肿瘤学系医师科学家Jacob Scott博士领导的研究小组研究了非小细胞肺癌NSCLC)细胞,发现发展中的耐药性不适用于每种药物,甚至有时更易受其他药物的侵害。这些电阻和敏感性模式随时间而变化。了解这一点,以及如何衡量这些变化,该团队确定它可能设计和预测新的治疗方案和时间表。

斯科特博士说:“虽然靶向于致癌细胞的分子途径的药物的发现一直是治疗许多癌症的一种范式转变,但往往药物会失效。“我们研究的最终目标是了解和预测治疗过程中肿瘤经历的变化,所以当不可避免的药物失败发生时,我们可以更好地规划二线治疗。

在研究中,研究人员进行了一系列进化实验,对许多用于治疗特定NSCLC的药物产生抗性。他们针对一大批其他药物测试了这些进化细胞,以更好地了解其经历的变化。还审查了“药物假期”的影响或治疗中断。这项研究是第一次一起报告药物假期和交叉阻力,并发现药物假期深刻影响了初级耐药性和易感性。

斯科特博士说:“研究人员已经知道,避免交叉耐药是关键;这项调查告诉我们,我们也需要考虑药物假期。” “我们希望我们的工作能够为各种类型的癌症进行类似的研究,最终为患者制定更多的治疗计划。”

该研究发表在“科学报告”中。

原始出处:

Andrew Dhawan, Daniel Nichol, Fumi Kinose, et al. Collateral sensitivity networks reveal evolutionary instability and novel treatment strategies in ALK mutated non-small cell lung cancer. Scientific Reports, Article number: 1232 (2017). doi:10.1038/s41598-017-00791-8

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    2017-10-21 yige2012
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    2017-05-04 luominglian113

    谢谢分享,药物假期

    0

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    2017-05-02 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

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Nature:P53突变,干细胞疗法背后可能的癌变风险

由于P53蛋白是限制细胞增殖的关键蛋白,缺失P53蛋白会导致细胞恶性增殖,最终导致癌变。研究人员因此提出警示,在未来选择干细胞疗法的时候,一定要充分的调查干细胞的基因突变,以防止可能的癌变发生。

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