The GORAB Knockout SK-HEP-1 Polyclonal Cells product provides a CRISPR/Cas9-edited polyclonal knockout cell population targeting the GORAB gene in the human SK-HEP-1 hepatic adenocarcinoma cell line. This polyclonal knockout cell pool offers a heterogeneous mixture of loss-of-function alleles, enabling robust functional studies of GORAB without the need for clonal selection. The cells are designed for researchers investigating Golgi biology, secretory pathways, and disease models related to Golgi dysfunction.
SK-HEP-1 cells are a well-characterized human liver adenocarcinoma-derived cell line with epithelial morphology. Originally isolated from the ascites of a patient with hepatic adenocarcinoma, SK-HEP-1 cells serve as a widely used model for hepatocyte biology, including protein secretion, metabolic functions, and cellular trafficking. Their epithelial origin and hepatic background make them particularly suitable for studying Golgi-associated processes in a liver-relevant context.
GORAB encodes a trans-Golgi network protein that interacts with the RAB6 GTPase to maintain Golgi ribbon architecture and facilitate anterograde transport of secretory cargo. As part of the Golgi vesicle trafficking network, GORAB associates with golgin tethering factors, the COPI coat complex, and Golgi matrix proteins such as GRASP55, GRASP65, GM130, and p115. Its function is critical for ciliogenesis and intracellular transport; disruption of GORAB impairs Golgi integrity, leading to defective protein secretion and ciliary signaling. Upstream regulation involves RAB6 GTPase and Golgi membrane recruitment signals, while downstream targets include secretory proteins and ciliary trafficking complexes.
In the SK-HEP-1 hepatic adenocarcinoma background, GORAB knockout allows dissection of liver-specific Golgi-mediated secretion pathways and their role in hepatocyte function and disease. This model is particularly relevant for studying Geroderma osteodysplasticum, a disorder linked to GORAB mutations that features cutis laxa and skeletal abnormalities, and for investigating broader Golgi-related developmental disorders. The polyclonal knockout population circumvents potential clonal adaptation artifacts, providing a more representative loss-of-function model for studying Golgi dynamics in cancer and secretory cells.
Representative applications include immunofluorescence analysis of Golgi morphology using GM130 and TGN46, western blotting for GORAB, and secretion assays with BiP-GFP to monitor protein export. RT-qPCR can confirm GORAB transcript reduction, and electron microscopy assesses ultrastructural changes in the Golgi. These cells enable screening for Golgi-related disorders and mechanistic studies of ciliogenesis defects. For further technical details, please contact Ascent Research.
