FN1 Knockout HAP1 Cell Line

The choice depends on whether you are studying FN1 (fibronectin 1)'s role as the principal extracellular matrix glycoprotein or modeling its functions in cell adhesion, migration, and ECM organization. The Knockout line is the standard tool for asking whether FN1 is required for these processes — FN1 is a large (~250 kDa) secreted glycoprotein that polymerizes into fibrils, binds integrins (α5β1, αvβ3, others) through RGD motifs, and serves as the principal ECM scaffold for cell adhesion, migration, and tissue assembly during development and wound healing. Overexpression is useful for studying FN1 in heterologous expression contexts. For ECM and adhesion research, the EDITGENE FN1 Knockout in HAP1 enables study of fibronectin biology. Rescue with full-length or domain-truncated FN1 (large gene rescue is technically challenging — multiple FN1 isoforms exist through alternative splicing) enables structure-function studies. The knockout is valuable for studying integrin-FN1 interactions, fibronectin matrix assembly, and emerging FN1-targeted therapeutics in cancer and fibrosis.

Primary applications: • Cell adhesion: cell spreading on fibronectin substrates and integrin α5β1-mediated adhesion analysis. • Fibronectin matrix assembly: fibronectin fibrillogenesis imaging and DOC-insoluble matrix fraction analysis. • Integrin signaling: phospho-FAK (Y397) and other downstream integrin signaling analysis given FN1-integrin interactions. • Fibrosis/cancer ECM: in heterologous contexts, FN1's role in fibrosis and cancer-associated ECM remodeling. EDITGENE recommends this model for researchers investigating fibronectin biology, ECM assembly, and integrin-mediated adhesion signaling.

Yes, with significant technical considerations for this large protein: • Construct design: FN1 encodes a ~250 kDa secreted protein from a ~10 kb cDNA — full-length cDNA rescue is technically challenging. Multiple FN1 isoforms exist through alternative splicing (EDA+/EDB+/V-region variants) — choose the isoform appropriate to the experimental question. • Domain-focused rescue: specific FN1 domain fragments (RGD-containing III10, syndecan-binding III13, etc.) can be rescued separately for structure-function studies. • Surface FN1 deposition: confirm fibronectin matrix assembly by IF staining after rescue. • Functional readout: rescue should restore cell adhesion to FN1 substrate and integrin-mediated signaling. 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.