DLG2 Knockout HAP1 Cell Line

The choice depends on whether you are studying DLG2 (discs large homolog 2, PSD-93, Chapsyn-110)'s role as a postsynaptic density scaffold or modeling schizophrenia GWAS associations. The Knockout line is the standard tool for asking whether DLG2 is required for these processes — DLG2 is a MAGUK (membrane-associated guanylate kinase) family scaffold protein with PDZ, SH3, and GUK domains, related to PSD-95 (DLG4); DLG2 binds NMDA receptors and other glutamate receptor subunits at excitatory postsynaptic densities, organizing synaptic signaling complexes. Overexpression is useful for studying DLG2 in heterologous expression contexts. Important consideration: DLG2 is principally functional at neuronal synapses — HAP1 is not the physiological context but supports biochemical studies. DLG family member (DLG1/SAP97, DLG3/SAP102, DLG4/PSD-95) expression analysis aids interpretation given functional overlap. DLG2 is one of the strongest schizophrenia GWAS-associated genes and has been characterized in autism spectrum disorder. Rescue with wild-type DLG2 enables structure-function studies. The knockout is valuable for studying MAGUK scaffold biology and emerging psychiatric disease research.

Primary applications: • MAGUK scaffold function: in heterologous synaptic-relevant contexts, NMDA receptor and other glutamate receptor binding through PDZ domains. • DLG family comparative studies: DLG1 (SAP97), DLG3 (SAP102), DLG4 (PSD-95) expression analysis to interpret DLG2-specific functions. • Schizophrenia GWAS studies: rescue with schizophrenia-associated DLG2 variants for genotype-function studies. • Discovery proteomics: interactome analysis in DLG2-null versus rescued cells. EDITGENE recommends this model for in vitro DLG2 biochemistry; physiological synaptic DLG2 research requires neuronal models.

Yes. DLG2 rescue experiments require attention to MAGUK scaffold architecture: • Construct design: use a codon-modified DLG2 sequence with a small C-terminal tag (FLAG, HA). DLG2 has three PDZ domains, SH3 domain, and inactive GUK domain — preserve all elements. • PDZ-mutant rescue: PDZ domain mutations disrupt NMDA receptor (and other PDZ-binding-motif) interactions. • Schizophrenia variant rescue: GWAS-associated DLG2 variants enable disease genotype-function studies. • Functional readout: rescue should restore PDZ-mediated scaffold interactions identified during knockout characterization. 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.