STK25 Knockout HAP1 Cell Line

The choice depends on whether you are studying STK25's role as a STE20-family kinase in cell polarity, metabolism (NAFLD/NASH research), or autophagy regulation. The Knockout line is appropriate for asking whether STK25 is required for these processes — STK25 has been characterized as a regulator of hepatic lipid metabolism and is being investigated as a therapeutic target for fatty liver disease. Overexpression is useful for testing whether elevated STK25 drives lipid accumulation phenotypes or for biochemical kinase activity studies. For STK25 research, the EDITGENE Knockout in HAP1 provides a clean genetic background for mechanistic studies. Note that physiologically relevant STK25 functions in NAFLD/NASH require hepatocyte-derived models — HAP1 is most useful for mechanistic and inhibitor specificity work. Rescue with wild-type or kinase-dead STK25 enables dissection of catalytic versus scaffolding contributions.

Primary applications: • Kinase activity assays: in vitro kinase assays using recombinant or immunoprecipitated STK25 with candidate substrates. • Cell polarity studies: imaging-based analysis of cell polarity markers and migration assays. • Inhibitor specificity: critical genetic control for testing STK25 inhibitors being developed for NAFLD/NASH applications. • Substrate identification: phosphoproteomics in the knockout to identify STK25-dependent phosphorylation events. EDITGENE recommends this model for researchers investigating STE20 kinase biology, cell polarity regulation, and STK25 inhibitor development.

Yes. STK25 rescue experiments require attention to its STE20-family kinase architecture: • Construct design: use a codon-modified STK25 sequence with a small N- or C-terminal tag (FLAG, HA). STK25's N-terminal kinase domain and C-terminal regulatory region should be preserved. • Kinase-dead rescue: the K49R mutation in the ATP-binding lysine abolishes catalytic activity and is the standard specificity control. • GCKIII paralog considerations: STK24 (MST3) and STK26 (MST4) share substantial homology with STK25 — rescue interpretation should account for paralog expression. • Inhibitor specificity: rescue with wild-type and kinase-dead STK25 enables on-target validation of STK25-targeting compounds in development for NAFLD/NASH. 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.