The B3GALT6 Knockout A-549 Polyclonal Cells represent a population of A-549 cells that have undergone CRISPR/Cas9-mediated disruption of the B3GALT6 gene, generating a heterogeneous polyclonal knockout model. This product is designed to facilitate studies of gene function by eliminating beta-1,3-galactosyltransferase 6 activity, the enzyme encoded by B3GALT6, in a well-characterized human cancer cell line. As a polyclonal population, these cells provide a robust tool for investigating loss-of-function phenotypes without the clonal selection artifacts that can arise from single-cell-derived lines.
The parental A-549 cell line is a human lung adenocarcinoma epithelial cell line originally established from the tumor tissue of a 58-year-old male. This adherent cell line is extensively utilized in oncology and respiratory disease research, particularly for examining mechanisms of tumor cell proliferation, migration, and interaction with the extracellular matrix. A-549 cells express a range of proteoglycans and growth factor receptors, making them a valuable model for dissecting the contributions of glycosaminoglycans to cancer cell behavior and stromal communication.
B3GALT6 encodes the glycosyltransferase responsible for adding galactose to xylose in the tetrasaccharide linkage region of glycosaminoglycan chains, a prerequisite for heparan sulfate and chondroitin sulfate biosynthesis. It functions in concert with B4GALT7 and B3GAT3, followed by chain elongation by EXT1, EXT2, and CHSY1. Regulated by TGF-beta and SOX9, B3GALT6 activity is critical for decorating core proteins like syndecans and glypicans. CRISPR/Cas9 disruption abolishes this activity, leading to defective glycosaminoglycan chains and dysfunctional proteoglycans that impair growth factor signaling, cell adhesion, and matrix integrity.
In A-549 cells, B3GALT6 loss disrupts glycosaminoglycan synthesis, altering the surface proteoglycan landscape. As these cells use heparan sulfate proteoglycans as co-receptors for growth factors such as FGFs and TGF-beta, the knockout unmasks how proteoglycan deficiency affects signaling cascades governing proliferation and epithelial-mesenchymal transition. Impaired chondroitin sulfate may also affect cell-matrix adhesion and invasion, providing a platform to study glycosaminoglycan roles in lung cancer progression.
Researchers can employ this polyclonal B3GALT6 knockout model to dissect glycosaminoglycan biosynthesis via HPLC disaccharide analysis and western blotting. Immunofluorescence for heparan sulfate, flow cytometry of syndecans and glypicans, and RT-qPCR for EXT1 and EXT2 allow assessment of proteoglycan alterations. Cell adhesion and migration assays evaluate functional consequences in cancer, while the model also aids in Ehlers-Danlos syndrome research. For further details, contact Ascent Research.
