TNFSF10 Knockout Cell Line (HEK 293)

The choice depends on whether you are studying TRAIL biology or producing recombinant TRAIL for apoptosis research. Note that TNFSF10 (TRAIL) is normally expressed by immune cells and induced by interferons; it acts on death receptors DR4/DR5 to trigger extrinsic apoptosis selectively in tumor cells. The Knockout line in HEK293 is most useful for biochemical and reagent production purposes; HEK293 is widely used for recombinant TRAIL expression. Overexpression is generally more functionally informative than knockout for TRAIL research in HEK293 — recombinant TRAIL production for cancer cell apoptosis assays is the predominant application. The EDITGENE Knockout line is useful as a negative control for confirming on-target activity of TRAIL receptor agonists in clinical development, and for background-free recombinant TRAIL expression. Rescue with wild-type or specific receptor-binding-modified TRAIL variants (e.g., DR5-selective TRAIL) enables receptor selectivity studies.

Primary applications: • Recombinant TRAIL production: HEK293 is widely used for soluble TRAIL expression for use in apoptosis research; the knockout ensures background-free production. • TRAIL receptor (DR4/DR5) selectivity studies: rescue with variant TRAIL constructs engineered for DR4 or DR5 selectivity enables receptor-specific apoptosis pathway dissection. • Anti-TRAIL receptor agonist specificity: critical genetic control for confirming on-target activity of TRAIL receptor agonists in clinical development. • Structural and binding studies: in vitro biochemistry of TRAIL-receptor complexes using cells producing tagged or modified TRAIL variants. EDITGENE recommends this model for researchers in cancer apoptosis research, TRAIL receptor pharmacology, and reagent production. Note that TRAIL-induced apoptosis assays require TRAIL-sensitive target cells, not HEK293 as the responder.

Yes. TRAIL rescue experiments require attention to trimerization and receptor selectivity: • Construct design: use a codon-modified TNFSF10 sequence with a C-terminal tag (FLAG, HA, His-tag). TRAIL is a type II membrane protein; the soluble extracellular domain (~residues 95-281) is the typical functional construct. • Receptor selectivity rescue: TRAIL binds DR4, DR5, and decoy receptors DcR1/DcR2 — engineered DR5-selective or DR4-selective TRAIL variants are valuable for receptor-specific apoptosis studies. • Trimerization validation: TRAIL functions as a homotrimer with bound zinc — proper assembly should be confirmed before functional assays. • Functional readout: rescue should restore secreted soluble TRAIL production (ELISA) and DR4/DR5-mediated apoptosis induction (caspase-8 cleavage assays in TRAIL-sensitive target cells). HEK293 is the standard cell line for recombinant TRAIL production for cancer apoptosis research applications.