The KIAA0319L Knockout SK-HEP-1 Polyclonal Cells comprise a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human SK-HEP-1 cell line, featuring disruption of the KIAA0319L gene. This loss-of-function model enables systematic exploration of KIAA0319L-dependent mechanisms within an endothelial background, avoiding clonal bias via a heterogeneous polyclonal pool. The CRISPR/Cas9-mediated gene ablation provides a stable in vitro platform for studying endocytosis and migration-related processes, supporting pooled population analyses.
SK-HEP-1 cells are a human hepatic adenocarcinoma line with well-characterized endothelial attributes, including von Willebrand factor (vWF) expression, CD31 positivity, and robust low-density lipoprotein (LDL) uptake. Widely employed as a liver sinusoidal endothelial cell (LSEC) model, these cells replicate key LSEC activities such as macromolecule filtration, scavenging, immune surveillance, and angiogenesis. This cellular context allows dissection of KIAA0319L function in vascular cell biology, extending its significance beyond neuronal systems.
KIAA0319L is a type I transmembrane protein possessing an extracellular PKD domain that facilitates cell-cell and cell-matrix adhesion. The protein interacts with clathrin, the AP-2 complex adaptor subunit AP2M1, and the related KIAA0319 protein, positioning it within the clathrin-mediated endocytosis machinery. Downstream, dynamin-mediated membrane scission completes endocytic vesicle formation, linking KIAA0319L to cytoskeletal reorganization and ciliogenic pathways. In endothelial cells, KIAA0319L-mediated endocytosis may govern receptor internalization and signal transduction necessary for migration and barrier function.
Loss of KIAA0319L in SK-HEP-1 cells disrupts clathrin-dependent trafficking, potentially impairing scavenger function and angiogenic responses. Given the gene??s role in ciliary assembly, this knockout model may unveil contributions of ciliated endothelial signaling to vascular homeostasis or disease. By studying KIAA0319L in an LSEC mimic, researchers can investigate how endocytic receptors regulate endothelial migration and the cellular response to shear stress or injury.
This polyclonal knockout product is suited for transferrin uptake assays to quantify endocytosis, wound-healing migration assays to assess motility, and ciliogenesis analyses. Co-immunoprecipitation with AP2M1 or clathrin verification supports interaction studies, while RNA-seq and immunofluorescence enable global expression profiling and subcellular localization. Applications include functional genomics of endothelial endocytosis, ciliopathy modeling, and migration research. For inquiries, please contact Ascent Research.
