TNFRSF1B Knockout HAP1 Cell Line

The choice depends on whether you are studying TNFR2-specific signaling — distinct from TNFR1 — or its emerging role in Treg biology and tumor immunity. The Knockout line is appropriate for asking whether TNFR2 is required for non-classical TNF signaling, including TRAF2-mediated NF-κB activation and anti-apoptotic signaling. Overexpression is useful for testing whether elevated TNFR2 is sufficient to enhance these pathways. For TNF biology research, the EDITGENE Knockout in HAP1 is particularly informative when combined with the parallel TNFR1 knockout — comparison of single and combined knockouts dissects receptor-specific TNF functions, since TNF binds both receptors with different affinities and signaling consequences. Rescue with wild-type or signaling domain-deleted TNFR2 is the standard approach for assigning observed phenotypes to specific TNFR2 signaling outputs.

Primary applications: • Non-classical TNF signaling: TRAF2-mediated NF-κB activation, anti-apoptotic gene expression, and cell survival readouts in the absence of TNFR2. • Combined TNFR1/TNFR2 studies: comparison with the parallel TNFR1 knockout (also available) dissects receptor-specific TNF functions. • Anti-TNFR2 therapeutic specificity: emerging TNFR2-targeting therapies for autoimmune disease and oncology — the knockout serves as a critical specificity control. • Treg-relevant pathway studies (mechanistic, in HAP1): although HAP1 is not a Treg model, biochemical TNFR2 signaling can be characterized in this background. EDITGENE recommends this model for researchers investigating TNFR2-specific signaling, TNF receptor pharmacology, and emerging TNFR2-targeting therapeutics.

Yes. TNFR2 rescue experiments require attention to receptor topology and signaling specificity: • Construct design: use a codon-modified TNFRSF1B sequence with a cytoplasmic C-terminal tag (FLAG, HA). TNFR2 is a type I membrane protein — the extracellular cysteine-rich domains and the cytoplasmic tail must both be preserved. • Surface expression validation: confirm exogenous TNFR2 surface localization by flow cytometry before downstream signaling assays. • Signaling domain mutant rescue: TRAF2-binding-deficient mutations separate ligand binding from intracellular signaling functions. • Functional readout: rescue should restore TRAF2-mediated NF-κB activation and TNFR2-specific gene expression patterns. 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.