KCNK3 Knockout A2780 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population with disruption of the human KCNK3 gene. These polyclonal knockout cells are generated by CRISPR/Cas9-mediated gene disruption, ensuring a loss-of-function model without clonal isolation. This heterogeneous pool enables robust functional analysis of TASK-1 potassium channel function in an ovarian cancer context.
The A2780 host cell line is a human epithelial ovarian carcinoma cell line established from an untreated patient, serving as a well-characterized model for high-grade serous ovarian cancer. Its tumorigenic properties and sensitivity to chemotherapeutics make it widely used in oncogenic signaling and drug response studies, owing to its well-documented epithelial origin and relevance to ovarian carcinoma research.
KCNK3 encodes TASK-1, a pH- and hypoxia-sensitive potassium leak channel that sets the resting membrane potential. Its activity is modulated by extracellular pH, oxygen tension, protein kinase A, angiotensin II, and inhalational anesthetics. Channel opening hyperpolarizes the membrane, influencing calcium signaling, ERK1/2 phosphorylation, NFAT activation, and cell cycle progression. TASK-1 interacts with 14-3-3??, arrestin-2, SUMO1, and forms heterodimers with TASK-3. Within the hypoxia?CHIF-1???CcAMP?CPKA?CERK1/2 axis, TASK-1 serves as a critical sensor linking microenvironmental changes to cellular outcomes.
In A2780 cells, KCNK3 knockout disrupts potassium conductance, altering membrane potential and impairing responses to pH and hypoxia. This may impact proliferation, apoptosis, and tumor microenvironment sensing, as TASK-1 contributes to adaptive mechanisms under acidic and hypoxic stress. This polyclonal model is valuable for studying KCNK3’s role in ovarian carcinoma survival, migration, and chemoresistance, and for dissecting pH homeostasis in the tumor niche.
Applications include patch-clamp electrophysiology, membrane potential assays, and Western blot/RT-qPCR for confirming disruption. Viability (MTT) and apoptosis (Annexin V) assays can be performed alongside hypoxia chamber experiments to probe hypoxia-dependent phenotypes. Migration/invasion assays and drug screening for TASK-1 modulators are also relevant, with implications for ovarian cancer and pulmonary arterial hypertension research. For further information, contact Ascent Research.
