The GORAB Knockout HEK293T Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout population in which the GORAB gene has been disrupted. This pooled knockout model is derived from the widely used HEK293T human embryonic kidney epithelial cell line and provides a heterogeneous population of gene-edited cells for loss-of-function studies of GORAB. The polyclonal format offers a convenient and robust system for investigating GORAB’s roles in Golgi architecture, vesicular trafficking, and nuclear envelope integrity without the need for single-cell cloning.
HEK293T cells are a derivative of the HEK293 cell line, stably expressing the SV40 large T-antigen, which facilitates episomal replication of plasmids containing the SV40 origin of replication. This cell line is renowned for high transfection efficiency, robust protein expression, and its utility in signal transduction studies. As an adherent epithelial cell line of human origin, HEK293T provides a physiologically relevant context for examining Golgi-related pathways and cellular aging mechanisms.
GORAB encodes a golgin protein that acts as a key RAB6 GTPase effector, maintaining Golgi stack organization and mediating retrograde COPI vesicle trafficking between the Golgi and endoplasmic reticulum. GORAB interacts directly with RAB6 and the cis-Golgi matrix protein GM130, and it forms complexes with SCYL1 and SUN domain-containing proteins SUN1 and SUN2. Through these interactions, GORAB bridges the Golgi apparatus to the nuclear envelope, contributing to nuclear positioning and envelope integrity. Disruption of GORAB leads to Golgi fragmentation, impaired glycosylation, and altered nuclear morphology, underscoring its essential role in organelle crosstalk and cellular homeostasis.
In HEK293T cells, which are extensively used for studying secretory pathways and protein trafficking, knockout of GORAB provides a powerful system to dissect Golgi-dependent processes. The polyclonal GORAB-knockout pool allows researchers to assess the collective effects of GORAB loss on RAB6-mediated membrane trafficking, Golgi stack integrity, and SUN protein-mediated nuclear envelope connections. This model is particularly valuable for examining how disruption of Golgi architecture influences downstream cellular functions such as protein secretion, glycosylation, and cell cycle progression.
Typical applications include immunofluorescence staining for Golgi markers (e.g., GM130, giantin) and nuclear envelope proteins (SUN1/2) to assess structural changes, western blotting and co-immunoprecipitation to probe GORAB interaction partners and downstream effectors, and glycosylation profiling to evaluate functional consequences. The knockout cells also serve as a model for geroderma osteodysplasticum, a premature aging syndrome linked to GORAB mutations, enabling studies on cellular senescence and tissue degeneration. Flow cytometric assays for cell cycle and apoptosis further extend the utility to drug discovery screens targeting Golgi-related vulnerabilities. For further information, please contact Ascent Research.
