The GNG12 Knockout HEK293T Polyclonal Cells are a pool of HEK293T cells engineered via CRISPR/Cas9 to disrupt the GNG12 gene, which encodes the G protein gamma-12 subunit. This polyclonal knockout population provides a versatile loss-of-function model for studying G?¦?-dependent signaling without clonal selection artifacts. By eliminating G??12 protein expression, this model specifically impairs the formation of functional G?¦? dimers containing this subunit.
HEK293T cells, derived from human embryonic kidney epithelium, are immortalized by SV40 large T-antigen, enabling high-level protein expression and efficient transfection. Their adherent growth and robust handling make them a standard platform for signal transduction research, gene regulation studies, and recombinant protein production. The cell line retains many endogenous GPCRs and key signaling components, providing a physiologically relevant context.
GNG12 encodes the G??12 subunit, which partners with a G?? subunit to form the G?¦? heterodimer. Upon GPCR activation by ligands such as chemokines or hormones, the heterotrimeric G protein dissociates, releasing G?¦? to modulate effectors including adenylyl cyclase isoforms (e.g., AC1, AC2, AC4), phospholipase C-?? (PLC-??), phosphoinositide 3-kinase (PI3K), and G protein-gated potassium channels. This regulates second messengers (cAMP, IP3, DAG, Ca2?) and downstream cascades like MAPK/ERK. G??12 also interacts with RGS proteins and GRKs, contributing to receptor desensitization and signal termination. Key interacting partners include G??i/o and G??q family members, various G?? subunits, and scaffold proteins like RACK1.
In HEK293T cells, which endogenously express many GPCRs and effectors, GNG12 knockout specifically abrogates G??12-containing G?¦? signaling. This enables clear discrimination between G?¦?- and G??-mediated cellular responses. Researchers can compare agonist-induced cAMP modulation, calcium flux, or ERK activation in wild-type versus knockout cells to define the G??12-specific signalosome. The system also facilitates studies on how G?? subtype identity determines effector coupling and subcellular localization.
Typical applications include GPCR signaling investigation, G?¦?-specific drug screening, and functional analysis in cancer cell migration and neurological disorders. Compatible assays include phospho-ERK western blotting, cAMP measurement, calcium mobilization, and Transwell migration assays. The polyclonal format minimizes clonal artifacts and is suitable for population-based high-throughput screening. For further details, contact Ascent Research.
