The GPER1 Knockout HEK293T Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population specifically designed for loss-of-function studies of the human GPER1 gene. This product comprises a heterogeneous pool of HEK293T cells carrying diverse CRISPR-mediated disruptions at the GPER1 locus, providing a robust population-level model that minimizes clonal artifacts while preserving the genetic variability inherent to gene knockout experiments. As a polyclonal knockout reagent, it is ideally suited for applications where bulk gene disruption is required without the need for single-cell-derived clones.
HEK293T cells are a widely utilized human embryonic kidney epithelial line transformed with the SV40 large T antigen, which enables high-copy episomal replication of transfected plasmids. This characteristic, along with their ease of culture and high transfection efficiency, has established HEK293T as a standard host for biochemical and cell-based assays. The parental line expresses endogenous GPER1 at moderate levels, making it a relevant background for knockout-mediated interrogation of estrogen-responsive pathways.
GPER1 encodes a seven-transmembrane G protein-coupled estrogen receptor that localizes to intracellular membranes and responds to 17??-estradiol, the selective agonist G-1, tamoxifen, and aldosterone. Upon ligand binding, GPER1 activates heterotrimeric G proteins, primarily G??s and G??i/o, to stimulate adenylyl cyclase-driven cAMP production and intracellular calcium mobilization. Additionally, GPER1 triggers Src-dependent matrix metalloproteinase-mediated shedding of HB-EGF, leading to transactivation of the epidermal growth factor receptor (EGFR) and subsequent phosphorylation of ERK1/2 and Akt. This signaling controls the expression of downstream effectors including c-Fos, cyclin D1, and HIF-1??, and is modulated by interacting partners such as caveolin-1 and ??-arrestin.
In the HEK293T context, knockout of GPER1 eliminates the rapid membrane-initiated estrogen signals while preserving nuclear estrogen receptor functions, enabling researchers to decouple these parallel pathways. This separation is critical for dissecting GPER1-specific contributions to proliferation, survival, and migration, independent of classical transcriptional responses. The high transfectability of HEK293T cells further allows the introduction of pathway reporters or mutant GPER1 constructs, facilitating detailed structure-function and rescue analyses.
This polyclonal knockout pool supports diverse experimental strategies, including high-throughput drug screening for selective estrogen receptor modulators, quantitative assessment of cell growth using MTT or BrdU incorporation, and western blot analysis of ERK/Akt phosphorylation status. cAMP accumulation assays and calcium imaging can monitor second messenger dynamics, while co-immunoprecipitation enables study of GPER1-protein interactions. Applications span cancer biology (breast and endometrial), cardiovascular protection, metabolic regulation, and neurobiology. For further information on product specifications, validation resources, or custom gene-editing services, please contact Ascent Research.
