TRPV6 Knockout Cell Line (HEK293)

The choice depends on whether you are studying TRPV6's role in calcium entry, intestinal calcium absorption modeling, or its overexpression effects in cancer. The Knockout line is the standard tool for asking whether TRPV6 is required for store-independent calcium entry in the cellular context being studied. Overexpression is useful for studying cancer-associated TRPV6 upregulation, which has been reported in prostate, breast, and other cancers. For TRPV6 research, the EDITGENE Knockout line in HEK293 is the standard mechanistic platform — TRPV6 has been extensively characterized in HEK293 heterologous expression systems, and the knockout provides a clean background for distinguishing TRPV6-specific calcium entry from TRPV5 and other channel activities. Rescue with wild-type, pore-dead (e.g., D541A), or cancer-associated TRPV6 variants is highly informative for both mechanistic and disease-modeling studies.

Primary applications: • Calcium imaging: Fura-2, Fluo-4, or genetically-encoded calcium indicator imaging following calcium store depletion or direct calcium entry stimulation. • Patch-clamp electrophysiology: whole-cell currents in response to calcium application to characterize TRPV6 channel activity. • TRPV5/TRPV6 specificity: critical control for distinguishing TRPV6-specific functions from its paralog TRPV5 in cellular calcium handling studies. • Cancer relevance: where applicable, TRPV6 upregulation effects on proliferation given its reported overexpression in multiple cancer types. EDITGENE recommends this model for researchers investigating epithelial calcium entry, TRPV6 channel biology, and cancer-associated calcium signaling.

Yes. TRPV6 rescue experiments have a well-established framework given extensive prior HEK293-based TRPV6 research: • Construct design: use a codon-modified TRPV6 sequence with a small N- or C-terminal tag (FLAG, HA). Both tag positions are tolerated for TRPV6; bulky tags should be avoided as they may interfere with channel assembly. • Pore-dead rescue: the D541A mutation in the selectivity filter abolishes calcium permeation and is the standard specificity control for distinguishing channel function from non-conducting roles. • Calcium-induced inactivation considerations: TRPV6 exhibits calcium-dependent inactivation — rescue assays should standardize extracellular calcium conditions to allow comparison across constructs. • Functional readout: rescue should restore store-independent calcium entry measured by calcium imaging (Fura-2, Fluo-4) or patch-clamp electrophysiology. HEK293 transduces efficiently with lentivirus and is the standard heterologous expression system for TRP channel research, supporting both polyclonal and clonal rescue line generation.