Depletion of Adipose Stroma-Like Cancer-Associated Fibroblasts Potentiates Pancreatic Cancer Immunotherapy.

IF 2 Q3 ONCOLOGY
Joseph Rupert, Alexes Daquinag, Yongmei Yu, Yulin Dai, Zhongming Zhao, Mikhail G Kolonin
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Abstract

Significance: This study shows that populations of CAFs have distinct effects on pancreatic cancer progression and shows that depletion of CAFs expressing adipose markers potentiates tumor/metastasis suppression effects of immune checkpoint blockade.

消耗脂肪基质样癌症相关成纤维细胞可增强胰腺癌免疫治疗。
免疫检查点阻断疗法,在一些癌症类型的转化,仍然无效的胰腺癌患者。癌症相关成纤维细胞(CAFs)亚群对癌症进展和治疗耐药性的影响尚不完全清楚。本研究分析了表达血小板衍生生长因子受体β (Pdgfrb)的CAFs和表达脂肪基质细胞(ASCs)标记物的CAFs在胰腺导管腺癌小鼠中的作用。消融Pdgfrb+细胞可抑制原发性胰腺肿瘤生长,减少细胞外基质(ECM)沉积,增加癌细胞向肝脏转移。肽D-CAN在asc样CAFs中诱导细胞凋亡,也减少胰腺肿瘤生长和ECM沉积,同时促进转移。单细胞RNA测序表明,Pdgfrb+或asc样cas的缺失均可降低肿瘤内皮细胞和活的癌细胞的频率。然而,虽然Pdgfrb+ CAFs的缺失导致更强的癌细胞侵袭性标志物的诱导,但asc样CAFs的缺失对剩余的CAFs具有相反的作用。使用D-CAN去除asc样CAFs也导致细胞毒性t淋巴细胞和b淋巴细胞的浸润增加。抑制免疫检查点的抗pd - l1抗体(aPDL1)在雌性和雄性小鼠中与D-CAN联合使用时对肿瘤生长具有更强的抑制作用。在雌性小鼠中,D-CAN / aPDL1联合使用比单独使用aPDL1更有效地减少肝转移。我们得出结论,改进靶向asc样CAFs的方法可能与免疫治疗联合有效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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