The AKAP11 Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from HeLa human cervical adenocarcinoma cells. This heterogeneous cell pool harbors a spectrum of CRISPR/Cas9-mediated AKAP11 gene disruptions, offering a robust loss-of-function model without the clonal artifacts of single-cell-derived lines. The polyclonal format ensures representation of diverse edits, making it suitable for studying AKAP11 deficiency in a cellular context that endogenously expresses critical cAMP/PKA signaling components.
HeLa cells, originally isolated from a cervical adenocarcinoma, are a well-characterized epithelial cell model extensively employed in cancer research and signal transduction studies. They retain key features of the parental tumor, including active cAMP/PKA and Wnt signaling pathways, providing a physiologically relevant background for interrogating AKAP11 function. Their robust proliferation and amenability to genetic manipulation facilitate high-throughput applications such as drug screening, large-scale genomic analyses, and high-content imaging.
AKAP11 encodes an A-kinase anchoring protein that functions as a molecular scaffold to compartmentalize the PKA holoenzyme and associated signaling enzymes at discrete subcellular locations. It directly interacts with PKA regulatory subunits RI?? and RII??, phosphodiesterase 4D, protein phosphatase 2A, and ??-catenin, thereby coordinating the spatiotemporal dynamics of cAMP/PKA signaling. Upstream activation through G-protein coupled receptors, adenylyl cyclase activators such as forskolin, and cAMP leads to PKA-mediated phosphorylation of the transcription factor CREB and ??-catenin. This scaffolding mechanism integrates cAMP/PKA and Wnt pathway inputs to regulate gene expression and cell cycle progression.
Disruption of AKAP11 in HeLa cells leads to delocalization of PKA holoenzymes and impaired phosphorylation of CREB and ??-catenin, effectively uncoupling cAMP signals from downstream transcriptional and cell cycle regulatory events. This knockout model is particularly valuable for dissecting compartmentalized cAMP/PKA signaling in the context of cervical adenocarcinoma, where pathway dysregulation contributes to uncontrolled proliferation and survival. It enables detailed investigation of how spatial PKA control influences cell cycle progression, apoptosis, and tumorigenic phenotypes. Additionally, it serves as a platform for evaluating small molecules that target AKAP-PKA protein-protein interactions or restore proper signaling localization.
Typical experimental applications include western blotting for phospho-PKA substrates, immunofluorescence microscopy to assess PKA subcellular localization, and cAMP ELISA for quantifying cAMP levels. Functional assays such as cell proliferation, colony formation, and flow cytometry-based cell cycle analysis allow phenotypic characterization. Dual-luciferase reporter assays provide a quantitative measure of CREB transcriptional activity. These polyclonal cells are well-suited for high-throughput drug screening aimed at identifying modulators of AKAP11-PKA interactions, and for exploring AKAP11’s roles in bipolar disorder and neurological diseases. For further information or to request additional protocols, please contact Ascent Research.
