EGR1 Knockout Cell Line (A549)

The choice depends on whether you are studying EGR1's role as an immediate-early gene transcription factor or its functions in lung cancer and cell proliferation. The Knockout line is the standard tool for asking whether EGR1 is required for these processes — EGR1 (early growth response 1, Zif268, Krox-24, NGFI-A) is a zinc finger transcription factor rapidly induced (within minutes) by growth factors, serum, stress, and neuronal activity; EGR1 binds GC-rich GCG(G/T)GGGCG response elements to drive expression of TGF-β, PTEN, p53, and other target genes. Overexpression is useful for studying EGR1 gain-of-function effects. For lung cancer research, the EDITGENE EGR1 Knockout in A-549 is highly relevant — A-549 is an NSCLC cell line, and EGR1 has been characterized with context-dependent roles in lung cancer (both tumor suppressor and oncogenic in different contexts). Rescue with wild-type or DNA-binding-deficient EGR1 enables structure-function studies. The knockout is valuable for studying immediate-early gene biology, EGR1-mediated transcriptional responses, and emerging EGR1-related cancer biology.

Primary applications: • Immediate-early gene induction: serum/PMA stimulation followed by EGR1 protein and target gene (TGF-β1, PTEN) induction analysis in EGR1-null cells. • Lung cancer biology: proliferation, migration, and apoptosis assays in NSCLC context. • EGR1 target gene programs: RNA-seq analysis to characterize EGR1-dependent transcriptional programs. • Zinc finger TF studies: in heterologous contexts, EGR1 GCG(G/T)GGGCG response element binding and target gene regulation. EDITGENE recommends this lung cancer model for researchers investigating immediate-early gene biology and EGR1-mediated transcriptional responses.

Yes. EGR1 rescue experiments require attention to zinc finger architecture: • Construct design: use a codon-modified EGR1 sequence with a small C-terminal tag (FLAG, HA). EGR1 has N-terminal transactivation domain, three C2H2 zinc fingers (DNA binding), and C-terminal repressor-binding (NAB1/2) region — preserve all elements. • DNA-binding-deficient rescue: zinc finger mutations abolish GCG(G/T)GGGCG element binding. • Functional readout: rescue should restore EGR1-induced target gene expression (TGF-β1, PTEN). A-549 transduces efficiently with lentivirus and supports stable rescue line generation.