维生素A衍生物选择性杀死肝癌干细胞

2018-04-27 MedSci MedSci原创

已经发现无环类维生素A,一种来源于维生素A的人造化合物,可以防止肝癌(HCC)的复发。现在科学家已经发现该化合物能够靶向癌症干细胞,阻止它们产生新的肿瘤细胞

已经发现无环类维生素A,一种来源于维生素A的人造化合物,可以防止肝癌(HCC)的复发。现在科学家已经发现该化合物能够靶向癌症干细胞,阻止它们产生新的肿瘤细胞。

HCC是一种高度致命的癌症,每年在全世界造成约600,000人死亡,使其成为非小细胞肺癌后第二大致命癌症。高致死率的原因之一是其高复发率。尽管手术和其他治疗方法在最初是有效的,但癌症经常复发。因此,研究人员正在积极寻找防止复发的方法,最近发现无环类维生素A可有效阻止肿瘤的复发。然而,科学家们并不确定它为什么起作用。

为了解答这一问题,由RIKEN综合医学中心的Soichi Kojima领导的一个研究小组研究了暴露于无环类微生物A的细胞的转录组,发现与未处理的细胞相比,它们具有MYCN低表达特征,该基因通常在肿瘤中表达并与不良预后相关。进一步实验显示,MYCN表达的降低在功能上导致较慢的细胞周期进展,增殖和集落形成,并导致更多的细胞死亡,这意味着无环类维生素A减缓了癌症的发展。然后该研究小组专注于癌症干细胞的作用,这种特殊细胞能够在化疗或其他治疗的冲击下幸存下来,然后分化成新的癌细胞,从而导致复发,同样无环类维生素A也能选择性杀灭这类肿瘤干细胞。


原始出处:

https://www.europeanpharmaceuticalreview.com/news/75151/vitamin-a-derivative-liver-cancer/

本文系梅斯医学(MedSci)原创编译整理,转载需授权!

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    2018-04-29 wwzzly
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    2018-04-28 flysky120

    希望能彻底治疗肝癌

    0

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