The KCNJ14 Knockout HeLa Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population targeting the KCNJ14 gene in the HeLa cell line. This heterogeneous pool of cells harbors gene disruptions that abolish functional Kir2.4 inward rectifier potassium channel expression, providing a loss-of-function model for studying membrane potential regulation and cellular excitability. The polyclonal format preserves genetic diversity inherent to the knockout population while enabling robust and reproducible phenotype detection in downstream applications.
HeLa cells are a human papillomavirus (HPV)-positive cervical adenocarcinoma line featuring an aneuploid, adherent epithelial-like morphology. As a widely adopted model in cancer research and molecular biology, HeLa cells offer a well-characterized genetic background and robust growth characteristics ideal for generating stable knockout populations and performing reproducible functional assays.
The KCNJ14 gene encodes Kir2.4, an inward rectifier potassium channel crucial for maintaining the resting membrane potential and potassium homeostasis. Kir2.4 activity is positively regulated by membrane phospholipid PIP2 and modulated by protein kinase A (PKA) and G-protein coupled receptor signaling; extracellular potassium concentration also critically tunes channel conductance. The channel interacts with scaffolding proteins DLG1 (SAP97), LIN7, and CASK, which mediate its subcellular localization and assembly into signaling complexes. Downstream, Kir2.4 modulating currents influence voltage-gated calcium channels and neuronal action potential firing, while intersecting with pathways involving NMDARs and voltage-gated sodium channels. Loss of Kir2.4 disrupts these signaling cascades, leading to altered cellular excitability.
In the HeLa cellular context, KCNJ14 knockout allows dissection of inward rectifier channel function independent of excitable cell-specific factors, although the channel??s roles in neuronal and cardiac excitability underlie its relevance to epilepsy, intellectual disability, and cardiac arrhythmias. HeLa cells provide a neutral and experimentally tractable background for complementation studies, structure-function analyses, and pharmacological profiling of Kir2.4 channels, overcoming limitations of primary neuron or cardiomyocyte models. This system facilitates the investigation of potassium channel contributions to cancer cell electrophysiology as well.
These polyclonal knockout cells are compatible with diverse experimental techniques, including patch-clamp electrophysiology to confirm loss of inward rectifier currents, membrane potential dyes and calcium imaging for excitability assays, and western blotting or RT-qPCR for molecular validation. They support RNA-seq for transcriptome-wide profiling and cell viability assays in drug screening campaigns targeting potassium channel modulators. These cells thus serve as a versatile tool for both basic and translational research into potassium channel biology. For technical details or ordering information, please contact Ascent Research.
