相关实验视频

Updated: Sep 12, 2025

Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay

Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay

Published on: August 14, 2018

确定RAPGEF3作为基础亚型肺状细胞癌的治疗脆弱性

Yijia Zhou^1,2, Hua Wang², Shijie Tang²

¹School of Life Science and Technology, ShanghaiTech University, Shanghai, China.

|August 8, 2025

概括

研究人员确定RAPGEF3是基础亚型肺状细胞癌 (LUSC) 的关键驱动因素. 通过向RAP1A-AKT通路,抑制RAPGEF3显示出对治疗LUSC和潜在的其他癌症的希望.

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:

肺状细胞癌 (LUSC),特别是基底亚型,是癌症死亡的主要原因.
治疗选择有限,生存率差,凸显了对基底亚型LUSC的新型治疗方法的需求.

研究的目的:

确定基底亚型LUSC中恶性进展的关键分子驱动因素.
研究RAPGEF3及其下游信号通路在LUSC瘤发生中的作用.
评估针对LUSC中的RAPGEF3的治疗潜力.

主要方法:

在基底亚型LUSC.LUSC中分析RAPGEF3表达的分析.
通过RAPGEF3.3调查RAP1A-AKT信号轴的激活情况.
在患者衍生异种移植 (PDX) 模型中使用选择性抑制剂ESI-09抑制RAPGEF3.
对RAP1A和RAP1B在瘤细胞信号传递中的作用进行比较分析.

主要成果:

在基底亚型LUSC中,RAPGEF3显著上调.
RAPGEF3激活了RAP1A-AKT通路,促进了癌细胞的增殖和生存.
抑制RAPGEF3与ESI-09抑制了PDX模型中的瘤生长,没有显著的毒性.
RAP1A,而不是RAP1B,通过AKT信号传递调解瘤存活和增殖.

结论:

在基底亚型LUSC中,RAPGEF3是恶性进展的关键驱动因素.
将RAPGEF3与ESI-09定位为基础亚型LUSC的有希望的治疗策略.
了解RAP1A和RAP1B的不同作用为LUSC病原和潜在的治疗干预提供了新的见解.
针对RAPGEF3的疗法可以扩展到其他癌症,它们具有类似的瘤性途径.

更多相关视频

Profiling Sensitivity to Targeted Therapies in EGFR-Mutant NSCLC Patient-Derived Organoids

Profiling Sensitivity to Targeted Therapies in EGFR-Mutant NSCLC Patient-Derived Organoids

Published on: November 22, 2021

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

Published on: April 6, 2016

相关概念视频

The Retinoblastoma Gene

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...

Abnormal Proliferation

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...

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...