The GOLGA5 Knockout HT29 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal population of human colorectal adenocarcinoma epithelial cells carrying a loss-of-function disruption of the GOLGA5 gene. This polyclonal knockout pool provides a mixed cellular background that enables robust modeling of GOLGA5 deficiency while mitigating clonal artifacts associated with single-cell-derived lines. The targeted gene ablation serves as a versatile tool for dissecting Golgi-dependent processes without introducing specific knock-in reporters or tags.
The HT29 cell line, originally isolated from a primary colorectal adenocarcinoma of a 44-year-old female, exhibits adherent epithelial morphology and is widely employed as a model of intestinal epithelial biology. HT29 cells retain key features of colorectal cancer, including aberrant signaling pathways and glycosylation patterns, making them particularly suitable for investigating the role of Golgi organization in tumor cell physiology. The parental line??s stable genetic background and well-characterized behavior under standard culture conditions ensure consistent baseline comparisons in knockout experiments.
GOLGA5 encodes a cis-Golgi-localized golgin that functions as a coiled-coil vesicle tethering factor, facilitating the capture of transport vesicles and maintaining the structural integrity of Golgi stacks. It interacts with core Golgi matrix components such as GM130, giantin, and p115, along with the coatomer complex and the small GTPase ARF1, to coordinate intra-Golgi trafficking. During mitosis, GOLGA5 is phosphorylated by CDK1, PLK1, and VRK1, promoting Golgi disassembly and subsequent reassembly??a process critical for equal organelle partitioning. Downstream, GOLGA5-mediated tethering ensures proper localization of Golgi enzymes and efficient secretion of cargo proteins, including VSVG-tagged reporters.
In the context of colorectal adenocarcinoma, disrupted Golgi architecture has been linked to altered glycosylation and enhanced invasive capacity. HT29 cells lacking GOLGA5 provide a physiologically relevant platform to examine how loss of a key structural golgin affects Golgi morphology, protein trafficking, and cell-surface glycan profiles. By coupling this knockout model with the host cell line??s intrinsic cancer-associated features, researchers can probe the functional consequences of compromised Golgi integrity on migration, invasion, and matrix protein secretion??hallmarks of metastatic behavior.
Typical experimental applications include immunofluorescence staining for Golgi markers (GM130, giantin) to assess organelle morphology, Western blotting to confirm GOLGA5 ablation and monitor cargo processing, and secretion assays to quantify trafficking efficiency. Electron microscopy can resolve ultrastructural changes in Golgi cisternae, while flow cytometry enables profiling of cell surface proteins. Migration and invasion assays further contextualize findings within tumor biology. This GOLGA5 knockout polyclonal HT29 cell population offers a powerful and flexible resource for dissecting the secretory pathway, mitotic Golgi dynamics, and glycosylation-dependent processes in colorectal cancer. For additional technical specifications or to inquire about custom gene-editing services, please contact Ascent Research.
