The AIF1 Knockout AGS Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population in the AGS human gastric adenocarcinoma cell line, designed to disrupt the AIF1 gene. This gene-edited model serves as a loss-of-function tool for investigating AIF1-mediated processes.
The AGS cell line, derived from a human gastric adenocarcinoma, is a widely utilized in vitro model for gastric mucosal epithelial cells and gastric adenocarcinoma. It is commonly employed in research on gastric cancer biology and the host response to Helicobacter pylori infection, a primary etiological agent in gastric carcinogenesis. The line retains epithelial characteristics and key signaling pathways, providing a relevant context for dissecting molecular mechanisms of gastric tumorigenesis.
AIF1 encodes an actin-bundling protein that regulates cell migration, membrane ruffling, and inflammatory signaling. It is activated by IFN-??, TNF-??, LPS, IL-1??, and functions downstream of NF-??B and H. pylori CagA. AIF1 promotes Rac1-dependent actin remodeling and focal adhesion turnover, interacting with F-actin, Rac1, vinculin, paxillin, and CaMKII. Downstream effects include FAK phosphorylation, MAPK pathway signaling (via EGFR/Grb2/SOS/Ras/Raf/MEK/ERK), and secretion of MMP9 and chemokines CCL2 and CXCL8. In gastric cancer, AIF1 contributes to epithelial-mesenchymal transition and cytokine-driven tumor progression.
In AGS cells, AIF1 knockout provides a powerful system to dissect the gene??s contributions to gastric cancer cell motility, inflammatory responses, and crosstalk with the tumor microenvironment. By eliminating AIF1, researchers can investigate its role in Helicobacter pylori-induced signaling cascades and assess its modulation of pathways such as NF-??B and MAPK, which are frequently dysregulated in gastric adenocarcinomas. This model enables the examination of actin-dependent migration and invasion mechanisms specific to gastric epithelial cells, offering insights into metastatic processes.
This polyclonal knockout population is suitable for a wide range of functional studies, including wound healing migration assays, transwell invasion assays, and ELISA-based cytokine secretion profiling to evaluate AIF1??s role in cell motility and inflammatory mediator production. Gene disruption can be confirmed by western blotting, RT-qPCR, and Sanger sequencing, while phospho-kinase arrays and co-immunoprecipitation can map affected signaling networks and protein interactions. Co-culture experiments with immune cells, such as macrophages or T cells, allow investigation of AIF1-mediated tumor-immune interactions. Additionally, the model can be used in drug sensitivity screens to identify vulnerabilities dependent on AIF1 signaling. For further technical details or custom inquiries, please contact Ascent Research.
