The GNG10 Knockout AGS Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout population derived from the human gastric adenocarcinoma cell line AGS, providing a loss-of-function model for the G protein gamma-10 subunit gene (GNG10). This population undergoes targeted disruption of GNG10, enabling researchers to investigate the functional consequences of GNG10 ablation in a gastric epithelial context relevant to cancer biology and GPCR signaling.
The AGS cell line, isolated from a primary human gastric adenocarcinoma, is an adherent epithelial model widely utilized in gastric cancer research and Helicobacter pylori infection studies. These cells retain key characteristics of gastric mucosal epithelium and serve as a neoplastic transformation platform, making them suitable for examining oncogenic signaling mechanisms, tumor suppressor functions, and host-pathogen interactions that contribute to gastric malignancy.
GNG10 encodes the gamma subunit of heterotrimeric G proteins, which forms a stable complex with G?? subunits (e.g., GNB1, GNB2) to create the G?¦? dimer upon GPCR activation. This dimer directly interacts with and regulates downstream effectors such as PLC??3 and adenylyl cyclase, modulating calcium and cAMP levels. G?¦? also activates PI3K, leading to Akt phosphorylation, and couples to the MAPK/ERK pathway via receptor tyrosine kinase transactivation by EGF. In AGS cells, GNG10 expression is influenced by Wnt ligands and the ??-catenin/TCF complex, which may transcriptionally regulate GNG10, while TNF and H. pylori CagA further modulate its expression. GNG10-containing G?¦? dimers also intersect with Wnt/??-catenin signaling; GNG10 knockout likely attenuates ??-catenin activity, reducing cyclin D1, c-Myc, and MMP-9 expression, and altering GRK2 interactions. These molecular connections underscore GNG10??s integration of GPCR-initiated and Wnt signals to control proliferation and motility.
In the AGS gastric adenocarcinoma environment, disruption of GNG10 is expected to impair GPCR-driven proliferative and migratory signals, particularly through dampened PI3K-Akt and MAPK/ERK pathway activation, while concomitantly suppressing Wnt/??-catenin-dependent transcription. This may attenuate oncogenic phenotypes such as anchorage-independent growth, invasion, and metastasis, mirroring studies where G protein ?? subunits contribute to gastrointestinal tumor progression. The model provides a valuable tool to dissect the contribution of G?¦?-mediated signaling to H. pylori CagA-induced cellular transformation, as CagA has been shown to modulate ??-catenin and MAPK pathways in AGS cells.
Typical applications of these polyclonal knockout cells include detailed characterization of GPCR signaling cascades, Wnt/??-catenin pathway interrogation using TOP/FOP flash reporter assays, and evaluation of metastatic potential via Transwell invasion and wound healing migration assays. They also serve in anti-metastatic drug screening and G protein-targeted therapy development, with validation by Western blotting, RT-qPCR, cAMP ELISA, and intracellular calcium imaging. Their polyclonal nature ensures population-level analysis suited to functional genomic screening and bulk assays. For further information or custom requests, please contact Ascent Research.
