相关实验视频

Updated: Jul 14, 2025

Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib

Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib

Published on: June 26, 2019

气膜分化驱动阻力KRAS抑制在肺腺癌的耐药性

Zhuxuan Li, Xueqian Zhuang, Chun-Hao Pan

bioRxiv : the preprint server for biology

|October 9, 2023

概括

克拉斯抑制剂在肺腺癌 (LUAD) 中面临抗药性. 向AT1-样细胞,一种耐药状态,克服了这种情况,改善了KRAS抑制剂治疗,降低了癌症死亡率.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

肺腺癌 (LUAD) 是癌症死亡的主要原因,通常是由KRAS突变驱动的.
目前的KRAS抑制剂由于耐药性而显示出有限的临床益处.
LUAD起源于膜2型 (AT2) 细胞,这些细胞具有干细胞的特性.

研究的目的:

研究LUAD中对KRAS抑制剂的耐药性机制.
确定克服KRAS抑制剂耐药性的治疗策略.
了解KRAS在维持瘤内异质性的作用.

主要方法:

用基因工程改造的LUAD的小鼠模型.
来自患者的异种移植.
对患者瘤样本的分析.
抑制和消灭KRAS信号传递和AT1样细胞.

主要成果:

在LUAD中,KRAS抑制会诱导一种静止的,类似AT1的癌细胞状态.
这些类似AT1的细胞具有很高的生长潜力,有助于治疗耐药性.
准AT1-样细胞显著增强对KRAS抑制剂的反应.
克拉斯在促进瘤内异质性方面发挥作用.

结论:

膜分化是LUAD中对KRAS抑制剂耐药性的关键机制.
准AT1样细胞是克服抗性的有希望的治疗策略.
将KRAS抑制与针对膜分化的策略结合起来,可能会改善LUAD治疗结果.

更多相关视频

Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure

Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure

Published on: August 11, 2017

Next Generation Sequencing for the Detection of Actionable Mutations in Solid and Liquid Tumors

Next Generation Sequencing for the Detection of Actionable Mutations in Solid and Liquid Tumors

Published on: September 20, 2016

相关概念视频

The Ras Gene

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...