The KCNK3 Knockout TE1 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population in which the human KCNK3 gene has been disrupted. This gene encodes TASK-1, a two-pore domain potassium leak channel that mediates background K+ currents critical for setting the resting membrane potential. The polyclonal format provides a heterogeneous pool of edited cells, enabling robust loss-of-function studies without clonal isolation. This product is designed for researchers investigating the roles of KCNK3 in cellular excitability, ion homeostasis, and cancer biology.
These cells are derived from the TE1 host cell line, an established human esophageal squamous cell carcinoma model originally obtained from a primary tumor of a Japanese male patient. TE1 cells are widely utilized in esophageal cancer research due to their epithelial origin and well-characterized growth properties. They provide a relevant cellular context for studying oncogenic signaling and tumor cell physiology, particularly in relation to ion channel dysregulation. The TE1 background enables functional interrogation of KCNK3 in a disease-relevant epithelial carcinoma setting.
KCNK3/TASK-1 functions as a constitutively active potassium leak channel whose activity is regulated by upstream factors including hypoxia, intracellular pH, Gq/11-coupled receptor signaling, anesthetics, PKA, and PKC. Knockout of KCNK3 is expected to depolarize the resting membrane potential, thereby altering calcium signaling pathways and downstream effectors such as calmodulin, NFAT, and MAPK/ERK. TASK-3 and 14-3-3 proteins are known interacting partners that modulate channel trafficking and function. The mechanistic disruption of this network likely impacts cell cycle regulators and apoptotic thresholds.
In the esophageal squamous cell carcinoma context, KCNK3 contributes to cancer cell proliferation and survival through its influence on membrane potential and calcium-dependent signaling cascades. Depolarization resulting from KCNK3 loss may suppress proliferation-promoting pathways or sensitize cells to apoptotic stimuli. This polyclonal knockout model thus serves as a powerful tool to dissect the contribution of background potassium conductance to the malignant phenotype of TE1 cells and to explore KCNK3 as a potential therapeutic target in esophageal and other cancers.
Typical applications include patch-clamp electrophysiology to assess potassium currents, membrane potential measurements using DiBAC4(3) fluorescence, and calcium imaging to monitor intracellular calcium dynamics. Phenotypic assays such as MTT or BrdU proliferation tests and Annexin V apoptosis detection can be combined with Western blotting and RT-qPCR for KCNK3 expression analysis. Researchers may employ these cells for drug screening campaigns targeting KCNK3, hypoxia response studies, or pH regulation investigations. For more details, contact Ascent Research.
