The GPER1 Knockout HeLa Polyclonal Cells are a ready-to-use CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the GPER1 gene in the human HeLa cervical adenocarcinoma cell line. This loss-of-function model enables detailed study of GPER1-mediated rapid estrogen signaling. The polyclonal format comprises a heterogeneous cell pool with diverse gene-editing events, providing a more physiologically relevant system that reduces the risk of clonal artifacts and allows assessment of population-level responses.
HeLa cells, originally isolated from a cervical adenocarcinoma, are HPV18-positive and exhibit inactivation of the tumor suppressors p53 and Rb by the viral E6 and E7 oncoproteins. These characteristics contribute to their transformed phenotype and continuous proliferation, making them a standard model for cervical cancer research. HeLa cells are widely employed to investigate mechanisms of carcinogenesis, evaluate drug sensitivity, and dissect intracellular signaling networks.
GPER1, also known as GPR30, is a G protein-coupled receptor that mediates rapid, non-genomic estrogen signaling. Upon binding by the endogenous ligand 17??-estradiol or the synthetic agonist G-1, GPER1 activates G??s and ??-arrestin-dependent pathways leading to EGFR transactivation. This triggers downstream Src kinase activity and stimulates the PI3K/Akt and MAPK/ERK1/2 cascades. These signaling modules promote the expression of proliferation and invasion-associated genes such as c-fos, cyclin D1, MMP-9, and VEGF, thereby enhancing cell growth, migration, and survival. Pharmacological blockade with the antagonist G15 permits confirmation of GPER1-specific effects.
In HeLa cells, GPER1 signaling contributes to estrogen-induced proliferation and migratory capacity, underscoring its relevance in cervical cancer progression. Ablation of GPER1 expression allows researchers to discriminate the contributions of rapid membrane-initiated signaling from those of classical nuclear estrogen receptors. The polyclonal knockout population inherently captures a spectrum of gene-disruption efficiencies, mirroring the heterogeneity of tumor cell populations and enabling robust evaluation of GPER1-dependent phenotypes.
These polyclonal GPER1 knockout cells are ideally suited for investigating estrogen-mediated rapid signaling, GPER1-EGFR crosstalk, and their roles in cancer cell proliferation and migration. Representative assays include phospho-ERK/Akt analysis by western blotting, quantification of downstream transcript levels via RT-qPCR, cell proliferation assays (e.g., MTT or BrdU), and transwell migration/invasion assays. They also facilitate GPER1-selective drug response screening. This knockout model provides a versatile platform for studying non-genomic estrogen actions in a cervical adenocarcinoma background. For further information or technical support, please contact Ascent Research.
