Br J Cancer:阿司匹林增强顺铂治疗食管鳞癌的疗效

2021-08-02 xiaozeng MedSci原创

食管癌(EC)作为中国第三大常见的癌症和第四大癌症死亡原因,据估计,每年有477,900例新发病例和375,000例死亡病例。

食管癌(EC)作为中国第三大常见的癌症和第四大癌症死亡原因,据估计,每年有477,900例新发病例和375,000例死亡病例。EC由两种主要的组织病理学类型组成:食管腺癌和食管鳞状细胞癌(ESCC)。

ESCC是中国人群中最主要的EC类型,占所有病例数的90%以上。ESCC患者的预后很差,总生存率<20%。尽管既往的研究已鉴定了与ESCC相关的癌症驱动基因,但目前仍然缺乏该疾病的相关治疗靶标和精确的药物治疗策略。

迄今为止,常规手术、放疗和化疗仍是ESCC的主要治疗方法,但放疗和/或化疗耐药性以及肿瘤的快速复发会导致ESCC患者的预后不良。既往研究显示,癌症干细胞(CSC)与ESCC患者的预后、复发和治疗抗性相关。尽管越来越多的证据显示,阿司匹林(乙酰水杨酸,ASA)可降低ESCC的发病率并改善患者的预后,但其潜在的分子机制仍有待研究。

ASA可提高DDP治疗食管鳞癌的疗效

在该研究中,研究人员分析了ASA在人ESCC细胞系和NMBzA(N-亚硝基甲基苄胺)诱导的大鼠ESCC致癌模型中化疗/化学预防中的作用。进一步分析ASA/顺铂联合治疗对ESCC细胞系的影响。通过高通量测序(ATAC-seq)测定相关转座酶可及染色质,以确定ASA在ESCC 细胞中引起的染色质可及性变化。

ASA可防止ESCC的癌变

结果显示,ASA能够抑制CSC的干细胞特性并增强人ESCC细胞中的顺铂治疗效果。ATAC-seq分析结果表明,ASA处理可通过改变组蛋白乙酰化水平来诱导ESCC细胞染色质的显著的表观遗传改变。该表观遗传学变化可激活Bim的表达并促进ESCC CSC的细胞死亡反应。此外,ASA可防止大鼠模型中NMBzA诱导的ESCC发生癌变。


总而言之,该研究结果揭示,ASA或可作为ESCC治疗的潜在化疗辅助剂和化学预防药物。


原始出处:

Zou, Z., Zheng, W., Fan, H. et al. Aspirin enhances the therapeutic efficacy of cisplatin in oesophageal squamous cell carcinoma by inhibition of putative cancer stem cells. Br J Cancer (27 July 2021).

 

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    2021-08-02 小小医者

    #阿司匹林#增强顺铂治疗#食管鳞癌#,不过在人体中的作用可能就很难发现了。

    0

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    2021-08-02 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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有基础冠状动脉和脑血管疾病的患者往往需要终生使用阿司匹林,但是这有可能会导致消化性溃疡病 (PUD) 以及消化道出血的发生。一般可以通过同时使用质子泵抑制剂

Ecancermedicalscience :阿司匹林可将癌症患者的死亡风险降低 20%

患有多种癌症的患者将阿司匹林作为治疗的一部分,可以帮助将他们的死亡风险降低 20%。