Cancer Cell:成功绘制出癌细胞耐药的新型通路

2016-04-18 佚名 生物谷

图片来源:www.sciencedaily.com 当高速公路因事故或重建而关闭时,司机们往往会绕道而行;同样地,当一种靶向疗法可以阻断促进肿瘤生长的通路时,肿瘤细胞通常也会设法“绕道而行”,最终就会产生疗法或药物的耐受性;近日来自加州理工学院等机构的研究人员通过对单一癌细胞进行研究发现了一种特殊方法绘制出了癌细胞所采用的绕道方式,这一研究刊登在了国际杂志Cancer Cell上。 研究

图片来源:www.sciencedaily.com

当高速公路因事故或重建而关闭时,司机们往往会绕道而行;同样地,当一种靶向疗法可以阻断促进肿瘤生长的通路时,肿瘤细胞通常也会设法“绕道而行”,最终就会产生疗法或药物的耐受性;近日来自加州理工学院等机构的研究人员通过对单一癌细胞进行研究发现了一种特殊方法绘制出了癌细胞所采用的绕道方式,这一研究刊登在了国际杂志Cancer Cell上。

研究者James Heath表示,如今的技术可以帮助我们观察到癌细胞增殖转移的替代途径,同时也可以帮助我们发现新型方法来切断癌细胞的扩散之路。本文研究中,研究者对胶质母细胞瘤进行了研究,胶质母细胞瘤是一种恶性的脑部癌症,尽管目前研究人员已经基于肿瘤的遗传改变开发出了特定的靶向疗法,但这种疗法的效应通常是短暂的,而当进行多种疗法的结合后或许就可以为抵御癌症提供较大帮助。

研究者在文章中解释了为何肿瘤细胞会对靶向疗法产生耐受性,同时他们还分析了原本可以正常发挥作用的药物为何不能有效抵御癌症。研究者利用了一种名为磷酸化蛋白质组学(PhosphoProteomics)的技术来进行研究,该技术可以帮助他们更清晰地观察单一癌细胞内部发挥作用的信号通路,对来自患者的组织进行研究,研究者发现,仅仅48小时以后癌细胞就开始适应并且对靶向作用mTOR通路的疗法产生耐受性了,这些癌细胞可以重新“绘图”并且寻找其它途径来躲避癌症药物的作用。

阐明癌细胞所采用的新型耐药性通路或可帮助科学家们开发新型联合疗法来抵御胶质母细胞瘤的发展;同时研究者指出,这种新型的磷酸化蛋白质组学技术可以被用来研究揭示黑色素瘤细胞如何对一系列BRAF抑制剂产生耐受性,而利用单细胞分析的方法也用来开发治疗多种类型癌症的新型个体化疗法。

原始出处:

Wei Wei, Young Shik Shin,et al.Single-Cell Phosphoproteomics Resolves Adaptive Signaling Dynamics and Informs Targeted Combination Therapy in Glioblastoma.Cancet Cell.Volume 29, Issue 4, p563–573, 11 April 2016

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    2016-11-25 维他命
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    2016-10-03 1e10c84am36(暂无匿称)

    深度好文,值得关注

    0

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    2016-04-20 yxch36

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中国研究人员一项新研究显示,糖尿病药物中的抗氧化剂有可能会促使肿瘤扩散,这提示医生不要给同时罹患糖尿病与肿瘤的患者滥用抗氧化剂。 这项研究4月13日发表在新一期美国《科学转化医学》杂志上,两名研究负责人是第三军医大学新桥医院内分泌科主任郑宏庭和第三军医大学西南医院副主任医师余时沧。 他们介绍说,大量证据表明糖尿病增加多种肿瘤的发生风险,因此糖尿病合并肿瘤患者日益增多。这些患者也需采取降