通过对EREG/EGFR/mTOR复合体1信号通路的下调,ELF3抑制了胆囊癌的发展
Takeharu Nakamura1, Yoshihiro Nishikawa1,2, Masahiro Shiokawa1
1Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
The Journal of pathology
|June 22, 2023
概括
类似于E74的ETS转录因子3 (ELF3) 的功能丧失突变在胆囊癌 (GBC) 中很常见. 通过降低EREG/EGFR/mTORC1信号调节,ELF3抑制GBC,这表明EGFR/mTORC1抑制是潜在的治疗方法.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 胆囊癌 (GBC) 的预后不好,需要更深入地了解其分子驱动因素.
- 类似于E74的ETS转录因子3 (ELF3) 的功能丧失突变在GBC中经常被发现,并表明瘤抑制作用.
研究的目的:
- 阐明ELF3抑制GBC发育的分子机制.
- 调查ELF3表达在人类GBC组织中的临床意义.
主要方法:
- 使用原生和全移植小鼠模型 (KPCE和KPC小鼠) 进行体内分析.
- 进行了组织学分析,有机体培养,RNA测序,西部涂抹和ChIP测定.
- 使用CRISPR/Cas9进行基因删除,并评估EGFR/mTORC1抑制的影响.
主要成果:
- 低ELF3表达与晚期GBC阶段和深度瘤入侵相关.
- 在小鼠模型中,ELF3的丧失导致皮膜病变的增加,并上调了epiregulin (Ereg) 和EGFR/mTORC1信号传递.
- ELF3直接调节Ereg,控制EGFR/mTORC1活动;Ereg删除抑制了瘤进展和中酶体表型.
- 抑制EGFR/mTORC1降低了GBC有机体中的细胞增殖和上皮细胞-介质细胞过渡.
结论:
- 通过降低EREG/EGFR/mTORC1信号通路的调节,ELF3在GBC中起到瘤抑制作用.
- 针对EGFR/mTORC1信号提供了一个潜在的治疗策略,用于ELF3突变的GBC患者.
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