TNFRSF1A Knockout HAP1 Cell Line

The choice depends on whether you are studying TNFR1-specific signaling — distinct from TNFR2 — or its role in inflammatory and cell death pathways. The Knockout line is appropriate for asking whether TNFR1 is required for classical TNF signaling, including death-domain-mediated apoptosis/necroptosis and NF-κB activation. Overexpression is useful for studying TNFR1-driven gain-of-function or modeling TRAPS (TNFR1-associated periodic syndromes) mutations. For TNF biology research, the EDITGENE Knockout in HAP1 is the standard tool — TNFR1 is the principal mediator of TNF cytotoxicity and inflammatory signaling. Combined analysis with the TNFR2 knockout (also available) enables comprehensive receptor-specific dissection. Rescue with wild-type, death-domain-deleted, or TRAPS-associated mutant TNFR1 enables disease modeling and signaling pathway dissection.

Primary applications: • Classical TNF signaling: death-domain-mediated apoptosis, necroptosis, and NF-κB activation readouts in the absence of TNFR1. • TNF cytotoxicity assays: TNF-α dose-response analysis with and without RIPK1/RIPK3 inhibitors to distinguish apoptotic from necroptotic outcomes. • Combined TNFR1/TNFR2 studies: receptor-specific dissection of TNF effects when combined with the parallel TNFR2 knockout. • TRAPS modeling: rescue with TRAPS-associated TNFR1 mutations enables modeling of TNFR1-associated periodic syndromes in a controlled background. EDITGENE recommends this model for researchers investigating TNFR1 signaling, TNF cytotoxicity, and inflammatory disease mechanisms.

Yes. TNFR1 rescue experiments require attention to death-domain function and trimerization: • Construct design: use a codon-modified TNFRSF1A sequence with a cytoplasmic C-terminal tag (FLAG, HA). TNFR1 is a type I membrane protein with an essential intracellular death domain. • Death-domain-deleted rescue: deletion of the death domain separates ligand-binding/recruitment from apoptosis-inducing functions. • TRAPS-associated mutant rescue: introduction of TRAPS variants enables modeling of TNFR1-associated periodic syndromes. • Functional readout: rescue should restore TNF-α-induced apoptosis (caspase-8/3 cleavage) and NF-κB activation (p65 phosphorylation, IκBα degradation). HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.