Br J Cancer:新型PPARγ激动剂CB11:非小细胞肺癌的潜在治疗药物

2020-09-24 xiaozeng MedSci原创

肺癌是全球癌症相关死亡的最常见原因,包括两种类型:小细胞肺癌(SCLC)和非小细胞肺癌(NSCLC)。既往研究显示,PPARγ(过氧化物酶体增殖物激活受体γ)激动剂能诱导人非小

肺癌是全球癌症相关死亡的最常见原因,包括两种类型:小细胞肺癌(SCLC)和非小细胞肺癌(NSCLC)。既往研究显示,PPARγ(过氧化物酶体增殖物激活受体γ)激动剂能诱导人非小细胞肺癌(NSCLC)细胞的死亡。然而,大多数NSCLC患者在接受治疗后会出现药物耐药性,目前相关的分子机制还尚不清楚。

该研究旨在探究新型嘌呤类PPARγ激动剂CB11的凋亡机制和抗癌作用,以及对NSCLC细胞的作用。研究人员发现,在人NSCLC细胞中,CB11能够激活ROS介导的ATM-p53-GADD45α信号通路进而引起细胞死亡反应,而NADPH氧化酶抑制剂DPI通过抑制CB11介导的ATM信号转导通路并减少细胞死亡的发生。

CB11的化学结构

移植瘤实验显示,相比于对照组,CB11能够显著减少肿瘤的体积。此外,对于具有放疗抗性的NSCLC细胞,CB11能抑制上皮-间质转化(EMT)进程诱导细胞死亡的发生。然而,PPARγ缺失会通过阻断放射线/CB11诱导的ATM-p53通路的激活来抑制细胞死亡的发生。


综上研究结果显示,新型的PPARγ激动剂CB11或可成为一种新型的抗癌药物,且对于放疗抗性的非小细胞肺癌的治疗具有一定的贡献。


原始出处:

Kim, T.W., Hong, D., Park, J.W. et al. CB11, a novel purine-based PPARγ ligand, overcomes radio-resistance by regulating ATM signalling and EMT in human non-small-cell lung cancer cells. Br J Cancer (22 September 2020).

 

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    2020-09-25 yangchou

    肺癌治疗的新希望#肿瘤#

    0

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    2020-09-24 ms7000000337048279

    我想要积分呜呜

    0

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    2020-09-24 ms6000001057696471

    会有越来越多的靶向治疗药物

    0

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