向EIF4A触发了干扰素反应,与化疗协同作用,并抑制了三阴性乳腺癌

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Updated: Jul 14, 2025

08:47

Monitoring eIF4F Assembly by Measuring eIF4E-eIF4G Interaction in Live Cells

Published on: May 1, 2020

3.1K

Na Zhao¹, Elena B Kabotyanski¹, Alexander B Saltzman²

¹Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA.

bioRxiv : the preprint server for biology

|October 9, 2023

概括

Zotatifin 是一种eIF4A抑制剂,通过抑制瘤生长,再极化巨细胞和增强免疫疗法来向三阴性乳腺癌. 它还与卡博普拉丁协同作用,以抑制T细胞依赖的瘤.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
免疫学免疫学免疫学

背景情况:

蛋白质合成失调在癌症中很常见,使mRNA转化抑制成为一个有前途的治疗策略.
三阴性乳腺癌 (TNBC) 是一个重大的治疗挑战.

研究的目的:

为了研究Zotatifin的作用,一个一流的eIF4A抑制剂,TNBC及其免疫微环境.
探索Zotatifin作为单一治疗和与其他治疗结合的潜力.

主要方法:

利用了同基因三阴性乳腺癌小鼠模型.
施用佐他提芬并评估瘤细胞的增殖,免疫细胞的透和基因表达.
研究了与卡博普拉丁和免疫检查点封锁的协同效应.
对药理动力学生物标志物进行分析的患者活检.

主要成果:

佐塔提芬抑制了瘤细胞的增殖,并使巨细胞重新极化为类似M1的表型.
抑制中性粒细胞的透,使瘤对免疫检查点封锁敏感.
重新编程了翻译场景,抑制了SOX4和FGFR1的翻译,并诱导了干扰素反应.
在患者活检中观察到类似的干扰素基因诱导.
佐他提芬与碳白金协同作用,诱导DNA损伤和增加干扰素反应,导致T细胞依赖性瘤抑制.

结论:

用Zotatifin针对eIF4A是一种可行的TNBC治疗策略.
佐塔提芬调节瘤细胞和瘤免疫微环境.
佐塔菲因与化疗或免疫疗法的联合疗法对TNBC治疗有希望.

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