The KCNK3 Knockout CAL-27 Polyclonal Cells represent a CRISPR/Cas9-mediated polyclonal knockout cell population derived from the human tongue squamous cell carcinoma line CAL-27. This product features targeted disruption of the KCNK3 gene, which encodes the TASK-1 potassium channel, a member of the two-pore domain potassium channel family. The polyclonal format provides a heterogeneous population of gene-edited cells, enabling robust loss-of-function studies without the clonal artifacts of single-cell knockouts. Engineered via CRISPR/Cas9 technology, these cells serve as a versatile model for investigating KCNK3-dependent physiological and pathological processes.
The parental CAL-27 cell line is an adherent epithelial cell line established from a human tongue squamous cell carcinoma. It is extensively employed in oral cancer research to study tumor biology, metastasis, and therapeutic responses. CAL-27 cells exhibit characteristic features of squamous cell carcinoma, including epithelial morphology and aggressive growth behavior, making them a relevant platform for examining the role of ion channels in cancer progression. This knockout model therefore situates KCNK3 functional analysis directly within a tumorigenic context.
KCNK3/TASK-1 encodes a pH- and hypoxia-sensitive background potassium channel that maintains the resting membrane potential and modulates cellular excitability. Its activity is regulated by multiple upstream signals, including extracellular acidification, hypoxia, G-protein-coupled receptors, tyrosine kinase receptors, and volatile anesthetics. Upon activation, KCNK3 mediates potassium efflux, which hyperpolarizes the membrane and influences downstream effectors such as intracellular calcium levels, the calcineurin/NFAT signaling axis, and hypoxia-inducible factor 1-alpha (HIF-1??). Additionally, KCNK3 interacts with 14-3-3 proteins, SNARE proteins, and arrestins, linking it to trafficking and signaling networks. Disruption of KCNK3 therefore impairs pH and oxygen sensing, alters calcium dynamics, and can affect proliferation, apoptosis, and migration pathways.
In the CAL-27 oral squamous cell carcinoma background, KCNK3 knockout is particularly significant due to the gene??s involvement in sensing the acidic and hypoxic tumor microenvironment. Loss of TASK-1 function may dysregulate resting membrane potential and calcium signaling, potentially shifting the balance between cell survival and death. This model enables dissection of how potassium channel-mediated electrophysiological signals intersect with oncogenic pathways in tongue carcinoma, offering insights into how tumor cells adapt to metabolic stress and how ion channels might serve as therapeutic targets in head and neck cancers.
Researchers can employ these polyclonal knockout cells in a broad array of experimental settings. Patch-clamp electrophysiology, Western blotting, and RT-qPCR validate KCNK3 loss at functional and expression levels. Functional consequences can be assessed by intracellular calcium imaging, MTT proliferation, TUNEL apoptosis, and wound-healing migration assays. Hypoxia response assays further enable the study of pH and oxygen-sensing pathways. This model is valuable for drug target validation in pulmonary hypertension and cancer, and for studying potassium channel roles in the tumor microenvironment. For additional details or to request technical support, please contact Ascent Research.
