The B3GNT5 Knockout HeLa Polyclonal Cells consist of a CRISPR/Cas9-edited polyclonal knockout cell population derived from HeLa cells, with targeted disruption of the B3GNT5 gene. This loss-of-function model provides a heterogeneous pool of edited cells without clonal isolation, enabling robust studies of B3GNT5-dependent glycosylation in a relevant epithelial cancer background. As a polyclonal population, it captures diverse editing outcomes and is well-suited for population-level functional assays, serving as a powerful tool to investigate poly-N-acetyllactosamine synthesis on glycoproteins and its impact on cell behavior.
HeLa cells are a widely used human cervical adenocarcinoma line that is HPV-positive and constitutively expresses the viral oncoproteins E6 and E7, which inactivate the tumor suppressors p53 and Rb. This genetic background drives unchecked proliferation and transformation, establishing HeLa as a classic model for cell cycle and cancer research. Their epithelial morphology and inherent motile properties further make them an ideal system for studying mechanisms of adhesion, migration, and invasion, processes that are frequently dysregulated in metastatic cancers.
B3GNT5 encodes a Golgi-resident glycosyltransferase that catalyzes the transfer of GlcNAc to elongate poly-N-acetyllactosamine chains on glycoprotein substrates, including integrins and cadherins. Transcription of B3GNT5 is positively regulated by TGF-beta, SNAI1, and TWIST1, factors associated with epithelial-mesenchymal transition and metastasis. The resulting glycan modifications enhance integrin glycosylation, which in turn activates FAK and SRC kinases and promotes Rho GTPase-mediated actin cytoskeleton remodeling. Disruption of B3GNT5 in these polyclonal knockout cells thus abrogates poly-N-acetyllactosamine synthesis, leading to impaired integrin-mediated adhesion, reduced migratory signaling through the FAK/SRC/Rho axis, and attenuated cytoskeletal dynamics.
In the HeLa context, loss of B3GNT5 is predicted to diminish integrin glycosylation, weaken cell?Cextracellular matrix interactions, and suppress migratory and invasive behaviors. This model therefore allows dissection of how specific glycan structures on adhesion receptors contribute to the metastatic phenotype of cervical cancer cells. Moreover, it enables exploration of the interplay between HPV-mediated transformation and glycosyltransferase activity, providing a platform to study how oncoviral proteins may influence glycan-related signaling pathways in cancer progression.
This polyclonal knockout cell population is applicable to a wide range of studies, including investigation of glycosylation in cancer metastasis, analysis of cell adhesion mechanisms, screening for glycosyltransferase inhibitors, and functional characterization of glycans in epithelial cells. Representative assays compatible with the model include western blotting to monitor protein expression and phosphorylation, transwell migration assays to assess motility, cell adhesion assays on ECM substrates, immunofluorescence and flow cytometry to visualize glycoprotein distribution, phospho-FAK analysis to evaluate integrin signaling, and RNA-seq to profile transcriptional changes. For additional technical details, please contact Ascent Research.
