The KCNK3 Knockout Ca Ski Polyclonal Cells product constitutes a CRISPR/Cas9-edited polyclonal knockout cell population in which the KCNK3 gene has been disrupted in the human cervical carcinoma cell line Ca Ski. This gene-edited pool provides a loss-of-function model for the TASK-1 (KCNK3) two-pore domain potassium channel, enabling functional studies without the requirement for single-cell cloning.
The host Ca Ski cell line is an established human cervical epithelial carcinoma model derived from an epidermoid carcinoma of the cervix. These cells are HPV-16 positive and retain integrated human papillomavirus type 16 DNA, making them a widely used and well-characterized system for investigating HPV-mediated carcinogenesis, viral oncoprotein function, and cervical cancer pathogenesis. Their robust growth characteristics and expression of relevant epithelial markers support diverse experimental applications.
KCNK3 encodes TASK-1, a two?pore domain potassium channel that mediates pH? and hypoxia?sensitive background potassium currents, critically setting the resting membrane potential and opposing depolarization. Its activity is regulated by extracellular pH, hypoxia, neurotransmitters (serotonin, acetylcholine), and kinases PKA and PKC. KCNK3 disruption abolishes channel function, causing membrane depolarization that activates voltage?gated calcium channels and triggers calcium influx. This calcium signal activates the MAPK/ERK cascade and influences cell cycle regulators and apoptotic pathways. TASK-1 interacts with 14?3?3 proteins, SUMO, and heterodimerizes with TASK-3 (KCNK9), and is integrated into GPCR signaling: serotonin receptor activation via Gq/11?CPLC?CDAG?CPKC phosphorylates and inhibits TASK-1, leading to depolarization, calcium entry, and MAPK/ERK activation.
In Ca Ski cervical carcinoma cells harboring HPV-16, TASK-1 knockout provides a model to dissect how background potassium conductance intersects with viral oncoprotein signaling. HPV E6 and E7 modulate host cell proliferation and apoptosis; loss of a key membrane-potential regulator may uncover dependencies or adaptive changes. The polyclonal knockout pool captures editing heterogeneity, mimicking tumor-cell variability and facilitating initial functional and pathway analyses.
These KCNK3 knockout polyclonal cells support applications such as cervical cancer research, HPV?Cion channel interaction studies, and TASK-1 drug target validation. Relevant assays include RT?qPCR and western blotting for knockout confirmation, patch?clamp electrophysiology, calcium imaging, phospho?ERK analysis, and functional assays for proliferation, migration, and apoptosis. For further technical information, please contact Ascent Research.
