Cancer Lett:新型自噬抑制剂千金藤碱能够增强非小细胞肺癌中dacomitinib的抗癌作用。

2017-10-16 fengxiangxin MedSci原创

抑制自噬是临床试验中非小细胞肺癌(NSCLC)治疗较有前景的策略。然而,目前在临床上使用的自噬抑制剂只有氯喹,并且氯喹对自噬的抑制作用较为有限。因此,开发出用于NSCLC治疗的可选择的抑制作用更好的自噬抑制剂是十分必要的。

在正常细胞中,自噬作为一种正常的生理功能,能够及时清除代谢废物以防止细胞突变。在异常或癌细胞中,自噬能为癌细胞提供能量,促进了其生存。所以,抑制自噬可能为治疗癌症的一种新策略。

抑制自噬是临床试验中非小细胞肺癌NSCLC)治疗较有前景的策略。然而,目前在临床上使用的自噬抑制剂只有氯喹,并且氯喹对自噬的抑制作用较为有限。因此,开发出用于NSCLC治疗的可选择的抑制作用更好的自噬抑制剂是十分必要的。

千金藤碱(CEP)是从千金藤属植物(金线吊乌龟)中提取的一种生物碱,被认为是NSCLC细胞中的一种新型自噬抑制剂。CEP抑制自噬的潜在机制是通过阻断自身噬菌体溶酶体融合和抑制溶酶体组织蛋白酶B和组织蛋白酶D的成熟。此外,在本研究中,研究者首次发现:dacomitinib(DAC),一种二代表皮生长因子受体抑制剂,在NSCLC治疗的III期临床试验中,其诱导的保护性自噬降低了其抗癌作用。

与CEP的联合应用增加了DAC在体外的抗增殖和凋亡作用,同时也增强了DAC在NCI-H1975异种移植小鼠中的抗癌作用。

总体而言,CEP可能作为自噬抑制剂进一步发展的研究对象,CEP和DAC的联合应用为NSCLC治疗提供了更有效的策略。

原始出处:

Tang ZH, Cao WX, Guo X.et al.Identification of a novel autophagic inhibitor cepharanthine to enhance the anti-cancer property of dacomitinib in non-small cell lung cancer.Cancer Lett. 2017 Oct 9. pii: S0304-3835(17)30624-9. doi: 10.1016/j.canlet.2017.10.001.

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    2017-11-15 jklm09
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    2018-01-02 gracezdd
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    2017-10-26 大爰

    学习了谢谢分享!!

    0

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    2017-10-16 131****1460

    学习了受益匪浅

    0

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