ELFN1 Knockout HAP1 Cell Line

The choice depends on whether you are studying ELFN1's role as a trans-synaptic organizer and mGluR7 partner or modeling its functions in synaptic specificity. The Knockout line is the standard tool for asking whether ELFN1 is required for these processes — ELFN1 is a postsynaptic transmembrane LRR-Fn protein that, via its extracellular LRR, binds the presynaptic mGluR7 (metabotropic glutamate receptor 7), recruiting it to specific synapses (e.g., OLM interneurons in hippocampus) to confer synapse-specific tonic glutamate sensing. Overexpression is useful for studying ELFN1 in heterologous expression contexts. Important consideration: ELFN1 is principally functional at neuronal synapses — HAP1 is not the physiological context for synaptic ELFN1 function but supports biochemical studies. ELFN2 paralog expression analysis aids interpretation. This product complements the parallel ELFN2 Knockout in HAP1 (also available) for paralog-specific functional dissection. The knockout is valuable for studying ELFN-mGluR trans-synaptic interactions in heterologous expression contexts; physiological synapse studies require neuronal models.

Primary applications: • ELFN1-mGluR7 interaction: heterologous co-expression of ELFN1 and mGluR7 to characterize their trans-cellular interaction. • Trans-synaptic organization: in synaptic contexts, ELFN1-mediated synapse-specific receptor recruitment. • ELFN family dissection: parallel analysis with ELFN2 Knockout in HAP1 (also available) for paralog-specific characterization. • Schizophrenia/autism studies: ELFN1 has been associated with neuropsychiatric disorders. EDITGENE recommends this model for in vitro ELFN1 biochemistry; physiological synaptic ELFN1 research requires neuronal models.

Yes. ELFN1 rescue experiments require attention to mGluR7-binding architecture: • Construct design: use a codon-modified ELFN1 sequence with a small intracellular C-terminal tag (FLAG, HA). ELFN1 has the canonical LRR-Fn architecture — preserve all elements. • Surface localization validation: confirm plasma membrane localization before mGluR7 interaction studies. • mGluR7-binding-deficient rescue: LRR domain mutations disrupt mGluR7 binding and serve as the standard specificity control. • Functional readout: rescue should restore ELFN1-mGluR7 trans-cellular interaction. 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.