MMP25 Knockout HAP1 Cell Line

The choice depends on whether you are studying MMP25 (MT6-MMP, leukolysin)'s role as a GPI-anchored membrane-type matrix metalloproteinase or its functions in neutrophil biology and emerging cancer roles. The Knockout line is appropriate for asking whether MMP25 is required for these activities — MMP25 is distinct from other MT-MMPs (MMP14/15/16/17/24) in being GPI-anchored rather than transmembrane, and is principally expressed by neutrophils and leukocytes. Overexpression is useful for studying MMP25 in heterologous expression contexts. Important consideration: MMP25 is principally expressed in neutrophils and leukocytes — HAP1 is not the physiological context for canonical MMP25 functions. The EDITGENE Knockout in HAP1 is most useful for biochemistry, MMP25 substrate identification, and as a clean genetic background for MMP25 structure-function research. Rescue with wild-type or catalytically-dead MMP25 is the standard specificity control. This product complements the parallel MMP15 and MMP16 Knockouts in HAP1 (also available) for MT-MMP family dissection.

Primary applications: • Heterologous MMP25 activity: in vitro proteolytic activity assays with candidate MMP25 substrates using recombinant or immunoprecipitated MMP25. • Surface localization: GPI-anchor topology validation by cell surface staining and PI-PLC sensitivity. • MT-MMP family comparative studies: parallel analysis with MMP15 and MMP16 Knockouts in HAP1 (also available) for MT-MMP family functional dissection. • MMP inhibitor specificity: broad-spectrum MMP inhibitor specificity testing in MT-MMP-deficient backgrounds. EDITGENE recommends this model for in vitro MMP25 biochemistry; physiological neutrophil/leukocyte MMP25 research requires myeloid cell models.

Yes. MMP25 rescue experiments require attention to GPI-anchored topology: • Construct design: use a codon-modified MMP25 sequence with a small N-terminal tag (FLAG, HA) — MMP25 has C-terminal GPI signal that is cleaved during processing, so C-terminal tags will be lost. • Surface localization validation: confirm GPI-anchored plasma membrane localization by cell surface staining and PI-PLC sensitivity before functional assays. • Catalytically-dead rescue: zinc-coordinating HEXXH motif glutamate mutation (E to A) abolishes metalloprotease activity and serves as the standard specificity control. • Functional readout: rescue should restore MMP25-dependent substrate cleavage measured by in vitro proteolytic activity assays. 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.