PPP2R2C Knockout HAP1 Cell Line

The choice depends on whether you are studying PPP2R2C (B/Bγ, PR55γ)'s role as a B regulatory subunit of PP2A or its specific brain-enriched functions in tau dephosphorylation. The Knockout line is appropriate for asking whether Bγ is required for PP2A targeting to brain-relevant substrates including tau — Bγ is one of four B (PR55) isoforms (α, β, γ, δ) that determine PP2A substrate selectivity, with Bγ being brain-enriched. Overexpression is useful for studying Bγ-PP2A holoenzymes in tau biology contexts. Important consideration: B family paralogs (PPP2R2A-D) have substantial functional overlap — single PPP2R2C knockout in HAP1 may show modest phenotypes if other B isoforms compensate. Rescue with wild-type PPP2R2C is the standard specificity control. The knockout is valuable for tau biology research (Alzheimer's disease relevance) given PP2A-Bγ-mediated tau dephosphorylation.

Primary applications: • Tau dephosphorylation: phospho-tau analysis at AD-relevant sites (S202, T205, S396, S404) given PP2A-Bγ's role in tau dephosphorylation — relevant to Alzheimer's disease research. • Neurodegeneration biology: tau aggregation, microtubule binding, and neurotoxicity studies in PP2A-Bγ-null background. • PP2A holoenzyme assembly: co-immunoprecipitation analysis of PPP2CA and PPP2R1A with Bγ to characterize holoenzyme composition. • B family paralog studies: PPP2R2A, B, D expression analysis to interpret Bγ-specific contributions. EDITGENE recommends this model for researchers investigating PP2A-Bγ holoenzyme biology and tau dephosphorylation mechanisms relevant to Alzheimer's disease.

Yes. PPP2R2C rescue experiments require attention to B family holoenzyme assembly: • Construct design: use a codon-modified PPP2R2C sequence with a small C-terminal tag (FLAG, HA). Bγ contains conserved B (PR55) family domain. • Tau-binding studies: rescue interpretation considers Bγ's role in tau dephosphorylation — phospho-tau analysis as functional readout. • B family paralog considerations: other B isoform (PPP2R2A, B, D) expression analysis aids interpretation. • Functional readout: rescue should restore B-PP2A holoenzyme assembly and substrate dephosphorylation patterns specific to the Bγ-containing holoenzyme. 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.