PI4K2A Knockout HAP1 Cell Line

The choice depends on whether you are studying PI4K2A (phosphatidylinositol 4-kinase type II α)'s role in PI(4)P generation at trans-Golgi network and endosomes or its functions in membrane trafficking. The Knockout line is the standard tool for asking whether PI4K2A is required for these processes — PI4K2A is one of four PI 4-kinases generating PI(4)P, with type II isoforms (PI4K2A, PI4K2B) being palmitoylated and membrane-anchored, distinct from type III isoforms (PI4KA, PI4KB). Overexpression is useful for studying PI4K2A in heterologous expression contexts. For PI4P research, the EDITGENE PI4K2A Knockout in HAP1 enables study of TGN and endosomal PI(4)P generation. PI4K2B paralog expression analysis aids interpretation given functional overlap. Rescue with wild-type or kinase-dead PI4K2A enables structure-function studies. The knockout is valuable for studying picornavirus replication — PI4K2A and PI4KB are critical host factors for enterovirus replication complexes, making this a target in antiviral research.

Primary applications: • PI(4)P generation: PI(4)P quantification by HPLC or PI4P biosensor imaging in the absence of PI4K2A — particularly TGN and endosomal PI(4)P pools. • Vesicle trafficking: AP-1 and AP-3 trafficking pathways given PI(4)P's role as adaptor complex docking platform. • Picornavirus replication: enterovirus or rhinovirus replication studies given PI4K2A's role in picornavirus replication complex formation. • Palmitoylation studies: PI4K2A is palmitoylated for membrane targeting — rescue with palmitoylation-deficient (CCPCC motif) mutants enables localization-function studies. EDITGENE recommends this model for researchers investigating PI4P biology, membrane trafficking, and picornavirus host factor research.

Yes. PI4K2A rescue experiments require attention to palmitoylation and membrane targeting: • Construct design: use a codon-modified PI4K2A sequence with a small C-terminal tag (FLAG, HA). PI4K2A has palmitoylated CCPCC motif for membrane targeting and PI4-kinase catalytic domain — preserve both elements. • Palmitoylation-deficient rescue: CCPCC → SSPSS mutations abolish palmitoylation and membrane targeting, generating soluble cytoplasmic PI4K2A. • Kinase-dead rescue: catalytic domain mutations abolish lipid kinase activity and serve as the standard specificity control. • Functional readout: rescue should restore PI(4)P generation at TGN and endosomes; picornavirus replication restoration in antiviral research contexts. 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.