应力颗粒
绿色荧光蛋白
细胞生物学
颗粒(地质)
生物
报告基因
化学
基因表达
生物化学
信使核糖核酸
翻译(生物学)
基因
古生物学
作者
Sang‐Soo Lee,Seung-Yeon Kim,Eunhye Kwon,Sunkyung Choi,Da‐Min Jung,Kee K. Kim,Eun‐Mi Kim
标识
DOI:10.1016/j.ecoenv.2023.115755
摘要
Under various cellular stress conditions, including exposure to toxic chemicals, RNA-binding proteins (RBPs), including Ras GTPase-activating protein-binding protein 1 (G3BP1), aggregate and form stress granule complexes, which serve as hallmarks of cellular stress. The existing methods for analyzing stress granule assembly have limitations in the rapid detection of dynamic cellular stress and ignore the effects of constitutively overexpressed RBP on cellular stress and stress-related processes. Therefore, to overcome these limitations, we established a G3BP1-GFP reporter in a human lung epithelial cell line using CRISPR/Cas9-based knock-in as an alternative system for stress granule analysis. We showed that the G3BP1-GFP reporter system responds to stress conditions and forms a stress granule complex similar to that of native G3BP1. Furthermore, we validated the stress granule response of an established cell line under exposure to various household chemicals. Overall, this novel G3BP1-GFP reporter human lung cell system is capable of monitoring stress granule dynamics in real time and can be used for assessing the lung toxicity of various substances in vitro.
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