The ARPC1A Knockout SK-HEP-1 Polyclonal Cells comprise a CRISPR/Cas9-mediated gene-disrupted population derived from the human SK-HEP-1 hepatic adenocarcinoma cell line. This polyclonal knockout model ablates functional expression of the ARPC1A gene, which encodes the p41-Arc subunit of the actin-related protein 2/3 (Arp2/3) complex, offering a powerful tool for dissecting actin cytoskeleton regulation in a metastatic cancer context.
SK-HEP-1 is an epithelial cell line originally isolated from ascitic fluid of a 52-year-old Caucasian male with liver adenocarcinoma. It is widely employed as a model system for hepatocellular carcinoma and tumor metastasis due to its robust migratory and invasive properties. The cells retain key signaling pathways that drive actin-dependent motility, making them an appropriate host for interrogating the role of ARPC1A in disease-relevant processes.
ARPC1A encodes the p41-Arc subunit of the heptameric Arp2/3 complex, which serves as the primary nucleator of branched actin filaments in cells. The complex is activated downstream of Rho family GTPases, principally CDC42 and RAC1, via WASP/WAVE family proteins (WASP, WASL, WASF1?C3) and cortactin. Upon activation, ARPC1A-containing Arp2/3 complexes interact with actin monomers, profilin, and cofilin to drive lamellipodial actin assembly, focal adhesion turnover, and endocytic vesicle trafficking. Disruption of ARPC1A therefore impairs these core processes, leading to altered cell shape, reduced protrusive activity, and compromised directional migration.
In the SK-HEP-1 context, ARPC1A knockout is expected to attenuate the cell line??s inherent metastatic potential by dismantling the branched actin network required for lamellipodia formation and matrix invasion. This model enables researchers to mechanistically link Arp2/3 complex function to liver cancer cell dissemination. Furthermore, because ARPC1A mutations have been associated with combined immunodeficiency featuring severe inflammation and allergy, these cells provide a platform to study how actin dysregulation contributes to immune cell dysfunction and epithelial barrier defects.
The polyclonal knockout population is suitable for a broad range of experimental applications, including live-cell imaging of actin dynamics, quantitative wound healing and Transwell migration assays, Matrigel invasion studies, co-immunoprecipitation of Arp2/3 complex components, and RNA sequencing to assess transcriptomic changes upon ARPC1A loss. It also serves as a relevant model for screening small-molecule inhibitors of actin nucleation and for investigating the crosstalk between CDC42/RAC1 signaling and cytoskeletal remodeling in hepatocellular carcinoma. For detailed protocols and additional product information, please contact Ascent Research.
