SLCO4C1 Knockout Huh-7 Cell Line

The choice depends on whether you are studying SLCO4C1 (OATP4C1)'s role in hepatic xenobiotic transport or its emerging functions in uremic toxin clearance. The Knockout line is appropriate for asking whether SLCO4C1 is required for transport of specific substrates — particularly relevant for studying digoxin, uremic toxin, and other OATP4C1 substrate handling in hepatocytes. Overexpression is useful for testing transport activity in heterologous expression contexts. Important consideration: SLCO4C1 is more broadly characterized in kidney than in liver — Huh-7 expresses SLCO4C1 at lower levels than physiological renal or hepatic contexts. The EDITGENE Knockout in Huh-7 is useful for hepatic transporter research in a hepatocyte-derived background and for drug-drug interaction studies involving SLCO4C1 substrates. Rescue with wild-type or substrate-binding-deficient SLCO4C1 enables transport mechanism studies.

Primary applications: • Transport activity assays: cellular uptake of SLCO4C1 substrates (digoxin, ouabain, uremic toxins like indoxyl sulfate) using radiolabeled or LC-MS-based detection. • Uremic toxin clearance studies: clearance kinetics for protein-bound uremic toxins in hepatocyte-derived context. • Drug-drug interaction studies: SLCO4C1 inhibitor specificity testing with the knockout as critical negative control. • Heterologous transport: rescue with wild-type SLCO4C1 in different cell contexts for substrate scope characterization. EDITGENE recommends this model for researchers investigating OATP transporter biology, uremic toxin biology, and drug transporter pharmacology.

Yes. SLCO4C1 rescue experiments require attention to membrane topology and transport activity: • Construct design: use a codon-modified SLCO4C1 sequence with a small internal or C-terminal tag (FLAG, HA). SLCO4C1 has 12 transmembrane domains — N-terminal tags must not disrupt membrane topology. • Surface expression validation: confirm plasma membrane localization by cell surface biotinylation or imaging before transport assays. • Transport-deficient rescue: specific substrate-binding pocket mutations enable distinguishing transport activity from other potential functions. • Functional readout: rescue should restore cellular uptake of SLCO4C1 substrates (digoxin, uremic toxins) measured by radiotracer or LC-MS detection. Huh-7 transduces efficiently with lentivirus and supports stable rescue line generation for hepatic transporter studies.