CELL:衰老诱导的血管重塑有利于胰腺癌的治疗

2020-04-03 MedSci原创 MedSci原创

最近,研究人员发现,MEK和CDK4/6抑制剂的联合应用可以通过诱导视网膜母细胞瘤(RB)蛋白介导的衰老,抑制PDAC增殖。

KRAS突变型胰腺导管腺癌(PDAC)的特点是具有促进血管扩张、免疫抑制,以及对化疗和免疫治疗的耐药性的结缔组织增生性反应

最近,研究人员发现,MEK和CDK4/6抑制剂的联合应用可以通过诱导视网膜母细胞瘤(RB)蛋白介导的衰老,抑制PDAC增殖。

在PDAC的临床前小鼠模型中,这种衰老诱导疗法产生一种衰老相关的分泌表型(SASP),该表型包括促进肿瘤血管生成因子,促进肿瘤血管生成,进而增强细胞毒性gemcitabine化疗的给药和疗效。

此外,SASP介导的内皮细胞激活刺激CD8 + T细胞积聚到原本免疫学上 "冷 "的肿瘤中,使肿瘤对PD-1检查点阻断敏感。

因此,在PDAC模型中,治疗诱导的衰老可以通过SASP依赖性形式,影响肿瘤血管和免疫系统,建立起对本来无效的化疗和免疫治疗的易感性。

 

原始出处:

Marcus Ruscetti et al. Senescence-Induced Vascular Remodeling Creates Therapeutic Vulnerabilities in Pancreas Cancer. Cell, 2020; 

 

 

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