The KRT19 Knockout AGS Polyclonal Cells comprise a CRISPR/Cas9-edited polyclonal population of AGS cells with targeted disruption of the KRT19 gene. This loss-of-function model enables investigation of keratin 19 function in a gastric adenocarcinoma background. The polyclonal nature of the knockout pool preserves genetic heterogeneity, allowing study of gene loss in a more physiologically relevant cellular context compared to clonal isolates.
AGS cells are a well-characterized human gastric adenocarcinoma epithelial cell line, originally derived from a patient with gastric carcinoma. They exhibit epithelial morphology and are widely utilized in cancer research as a model for gastric cancer progression, metastasis, and drug response. The epithelial origin of AGS cells makes them particularly suited for studying the role of intermediate filament proteins in cell structure and signaling.
KRT19 encodes keratin 19, a type I intermediate filament protein that requires heterodimerization with the type II keratin KRT8 to form functional cytoskeletal networks. These filaments are crosslinked by plectin and interact with 14-3-3 proteins that modulate cell cycle progression. Upstream, KRT19 transcription is controlled by ETS1, SP1, and Wnt/??-catenin signaling, and is responsive to glucocorticoids. Downstream, KRT19 regulates cell migration, invasion, EMT, and cytoskeletal remodeling. Loss of KRT19 consequently impairs epithelial integrity and mechanotransduction.
In the AGS gastric cancer context, CRISPR-mediated knockout of KRT19 is expected to perturb the intermediate filament architecture, potentially reducing cell adhesion and resistance to mechanical stress. These alterations can promote EMT-like phenotypes, enhance migratory and invasive capacities, and alter signaling dynamics associated with gastric carcinoma progression. This model thus provides a platform to dissect keratin-dependent pathobiology in gastric cancer and to evaluate the role of KRT19 in metastasis.
This knockout cell tool is applicable to a range of experimental assays, including wound healing and Transwell assays to measure migration and invasion, immunofluorescence microscopy for cytoskeletal organization, and Western blotting for EMT markers such as E-cadherin and Vimentin. Additionally, flow cytometry enables cell cycle analysis, and co-immunoprecipitation can assess altered keratin interactions. Researchers may employ these cells to model gastric cancer metastasis, screen for cytoskeletal-targeting drugs, or discover biomarkers linked to keratin 19. For ordering information and technical support, please contact Ascent Research.
