NR3C2 Knockout HAP1 Cell Line

The choice depends on whether you are studying NR3C2 (mineralocorticoid receptor, MR)'s role as the principal aldosterone receptor or its functions in pseudohypoaldosteronism type 1 and emerging non-renal contexts. The Knockout line is the standard tool for asking whether MR is required for aldosterone-induced transcription — MR is a steroid hormone nuclear receptor activated by aldosterone (and cortisol after pre-receptor regulation by 11β-HSD2) that drives sodium reabsorption and other epithelial transport. Overexpression is useful for studying MR in heterologous expression contexts or for testing receptor antagonist specificity. Important consideration: MR is principally functional in distal nephron, colon, sweat glands, and salivary glands — HAP1 is not the physiological context for MR. The EDITGENE Knockout in HAP1 is most useful for biochemistry and MR antagonist specificity testing. NR3C2 loss-of-function mutations cause autosomal dominant pseudohypoaldosteronism type 1 — disease variant rescue enables genotype-function studies. The knockout is a critical genetic specificity tool for MR antagonists (spironolactone, eplerenone, finerenone) in hypertension and heart failure drug development.

Primary applications: • MR antagonist specificity: critical genetic control for spironolactone, eplerenone, and finerenone (Kerendia) — finerenone is FDA-approved for chronic kidney disease in type 2 diabetes. • Aldosterone-induced transcription: reporter gene assays and target gene expression (SGK1, αENaC) analysis in heterologous expression contexts. • Pseudohypoaldosteronism modeling: rescue with patient-derived NR3C2 mutations for genotype-function studies. • Cortisol versus aldosterone selectivity: studies of MR's intrinsic dual ligand specificity and the role of 11β-HSD2 in pre-receptor regulation. EDITGENE recommends this model for researchers investigating mineralocorticoid receptor pharmacology, hypertension drug development, and pseudohypoaldosteronism mechanisms.

Yes. MR rescue experiments require attention to nuclear receptor architecture: • Construct design: use a codon-modified NR3C2 sequence with a small C-terminal tag (FLAG, HA). MR has N-terminal A/B with AF-1, DNA-binding C, hinge D, and ligand-binding E with AF-2 — preserve all elements. • DNA-binding-deficient rescue: zinc finger DBD mutations enable separating transcriptional from non-genomic effects. • Ligand-binding-deficient rescue: LBD mutations affecting aldosterone or cortisol binding for specificity studies. • Functional readout: rescue should restore aldosterone-induced reporter activity and target gene expression. 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.