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Nat Commun:氧化磷酸化促进胰腺癌干细胞的干性和免疫诱导特性

2020-10-20 haibei MedSci原创

抗PDAC已有疗法的无效性被认为是由于存在一种被称为癌症干细胞(CSCs)的肿瘤细胞亚群,它们在功能上具有可塑性,并具有专属的致瘤、抗化疗和转移能力。

在过去的十年中,不同癌症的诊断和治疗取得了巨大的进步;然而,对于胰腺导管腺癌(PDAC)来说,情况却并非如此,它目前是癌症相关死亡的第四大常见原因,预计到2030年将成为第二大致命性肿瘤。

在诊断时,<20%的患者表现为局部疾病(因此可能可切除和治愈),15-20%的患者为局部晚期肿瘤(不可切除),其余患者表现为转移性疾病。更为复杂的是,即使是最强的化疗方案,也只能将总生存期延长至约11个月,极少导致长期无进展生存(>5年)。因此,我们需要全新的方法来确定PDAC的新型和更有效的治疗方法。

研究表明,抗PDAC已有疗法的无效性被认为是由于存在一种被称为癌症干细胞(CSCs)的肿瘤细胞亚群,它们在功能上具有可塑性,并具有专属的致瘤、抗化疗和转移能力。

最近,研究人员在Nature Communications发文,其描述了一个二维体外系统,用于长期富集胰腺CSCs,适合生物和CSC特定研究。

通过在体外从葡萄糖到半乳糖改变碳源,研究人员迫使PDAC细胞利用氧化磷酸化(OXPHOS),导致CSCs的富集,表现为增加CSC生物标志物和多能性基因的表达,更大的致瘤潜力,诱导但可逆的静止,增加的OXPHOS活性,增强的侵袭性,并上调免疫逃避性能。

这种CSC富集方法可以促进新的CSC特异性标志的发现,以便未来开发成基于PDAC的治疗目标。

 

原始出处:

Sandra Valle et al. Exploiting oxidative phosphorylation to promote the stem and immunoevasive properties of pancreatic cancer stem cells. Nature Communications (2020). 

 

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    2020-10-23 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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