PPP2R5D Knockout HAP1 Cell Line

The choice depends on whether you are studying PPP2R5D (B56δ)'s role as a brain-enriched PP2A regulatory subunit or modeling Houge syndrome (PPP2R5D-related intellectual disability). The Knockout line is the standard tool for asking whether B56δ is required for PP2A targeting to substrates — B56δ has been characterized as a brain-enriched B56 isoform with critical neurodevelopmental functions. Overexpression is useful for studying B56δ in heterologous expression contexts or for testing disease-associated mutations. For neurodevelopmental disease research, the EDITGENE PPP2R5D Knockout in HAP1 is highly relevant — PPP2R5D mutations cause Houge syndrome (intellectual disability, macrocephaly, hypotonia), an autosomal dominant disorder. Disease-associated mutations are typically heterozygous dominant-negative or gain-of-function — disease variant rescue in the knockout enables genotype-function studies. Rescue with wild-type or Houge-associated mutant (E198K, E200K, P201R) B56δ enables comprehensive disease modeling.

Primary applications: • Houge syndrome modeling: rescue with patient-derived dominant-active PPP2R5D mutations (E198K, E200K, P201R, others) for genotype-function correlation studies of this neurodevelopmental disorder. • Neurodevelopmental phenotypes: in heterologous neural contexts, characterization of mutation-induced effects on phosphorylation networks relevant to brain development. • B56δ-specific substrate identification: phosphoproteomics in the knockout to identify substrates preferentially dephosphorylated by PP2A-B56δ. • Disease-relevant pharmacology: PP2A reactivator and B56-targeting compound studies in the Houge syndrome modeling context. EDITGENE recommends this model for researchers investigating PPP2R5D-related neurodevelopmental disease and B56δ-specific PP2A substrate biology.

Yes, and rescue experiments are particularly valuable for Houge syndrome disease modeling: • Construct design: use a codon-modified PPP2R5D sequence with a small C-terminal tag (FLAG, HA). B56δ has conserved B56 domain organization. • Houge syndrome mutation rescue: dominant-active mutations (E198K, E200K, P201R, others) introduced for disease genotype-function studies — these mutations are recurrent in Houge syndrome patients. • Heterozygous-state modeling: rescue with mixed wild-type + mutant B56δ at varying ratios models the heterozygous dominant disease state more accurately than complete substitution. • Functional readout: rescue should restore wild-type substrate dephosphorylation while disease mutants may produce gain-of-function phenotypes. 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.