The KIFAP3 Knockout SK-HEP-1 Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal cell population derived from the human SK-HEP-1 hepatic adenocarcinoma cell line, designed to disrupt the KIFAP3 gene. This heterogeneous knockout pool carries diverse mutations, generating a loss-of-function model for studying kinesin-2-mediated transport processes. The polyclonal format retains population-level variability while abolishing KIFAP3 expression, making it suitable for functional studies where clonal isolation is not required.
SK-HEP-1, isolated from ascites of a liver adenocarcinoma patient, exhibits a mixed endothelial/epithelial phenotype and serves as a widely used model for endothelial cell biology and angiogenesis. Despite its tumor origin, the line displays endothelial markers and angiogenic properties, including tube formation, and supports primary ciliogenesis under appropriate conditions, enabling investigation of ciliary signaling in a cancer-relevant context.
KIFAP3 encodes an essential non-motor adaptor of the heterotrimeric kinesin-2 motor complex, binding KIF3A and KIF3B to link the motor to cargoes and IFT particles. This interaction is crucial for anterograde intraflagellar transport, ciliogenesis, and transduction of Hedgehog and Wnt pathways. Regulated by ARL3, ARL13B, PKA, and Aurora A kinase, KIFAP3-dependent trafficking controls the localization and activity of downstream effectors such as Smoothened, N-cadherin, EGFR, and ??-catenin, ultimately modulating GLI transcription factors and ??-catenin-mediated gene expression.
In SK-HEP-1 cells, KIFAP3 disruption impairs kinesin-2 transport, leading to defective ciliogenesis and attenuated ciliary Hedgehog and Wnt signaling. Considering the endothelial-like characteristics and angiogenic potential of the host line, this knockout model is especially relevant for exploring how ciliary pathways influence tumor cell proliferation, migration, and vascular mimicry. Loss of KIFAP3 is anticipated to perturb Smoothened trafficking and ??-catenin stability, resulting in altered GLI target gene expression and N-cadherin-dependent adhesion dynamics.
The polyclonal knockout cells support diverse experimental approaches, including immunofluorescence-based ciliogenesis assays, Western blotting for Smoothened and ??-catenin, cell migration and cell cycle analyses, and co-immunoprecipitation of KIFAP3-KIF3A complexes. They provide a robust platform for dissecting KIFAP3-dependent mechanisms in cancer biology, angiogenesis, and ciliopathy research. For further technical details or custom inquiries, please contact Ascent Research.
