The DMTN Knockout HeLa Polyclonal Cells product comprises a polyclonal population of HeLa cells that have undergone CRISPR/Cas9-mediated disruption of the DMTN gene, leading to loss of dematin protein expression. This heterogeneous knockout model is generated without clonal selection, providing a realistic representation of gene perturbation effects across a diverse cellular population. The polyclonal format is well-suited for studies requiring a large-scale, cost-effective source of knockout cells while retaining physiological variability in gene editing outcomes.
HeLa cells are a well-established immortal human cell line derived from cervical adenocarcinoma, positive for human papillomavirus type 18 (HPV-18). They serve as a classic model for epithelial carcinoma research, widely utilized in cancer biology, signal transduction, and cytoskeletal studies. Their robust growth and adaptability make them a preferred host for generating gene-edited derivatives to dissect molecular mechanisms underlying oncogenesis and cellular physiology.
DMTN encodes dematin, an actin-bundling protein essential for maintaining the spectrin-actin network at the plasma membrane. Dematin directly binds F-actin and spectrin, and interacts with SLC4A1 (band 3) and calmodulin (CALM1), thereby linking the cytoskeleton to the membrane. Its activity is regulated by Ca2+/calmodulin signaling and phosphorylation by protein kinase A (PRKACA) and protein kinase C (PRKCA). Downstream, dematin promotes actin filament bundling, stabilizes the spectrin-based membrane skeleton, and facilitates focal adhesion remodeling. CRISPR/Cas9-mediated knockout of DMTN disrupts these interactions, impairing actin cytoskeleton organization, membrane-cytoskeleton linkage, and consequently, cell adhesion, migration, and mechanical stability.
In HeLa epithelial carcinoma cells, dematin depletion by CRISPR/Cas9 editing is expected to cause pronounced actin cytoskeletal defects, leading to altered cell morphology, weakened focal adhesions, and compromised migratory capacity. This model recapitulates aspects of cytoskeletal disorders such as hereditary spherocytosis and elliptocytosis, which are linked to defects in spectrin-actin networks. By using this knockout, researchers can explore how loss of an actin-bundling protein influences the invasive behavior of cervical adenocarcinoma cells and uncovers potential vulnerabilities in cytoskeletal regulatory networks.
Typical applications include investigating actin cytoskeleton regulation, cell adhesion and migration, and the functional role of dematin in epithelial cells. Researchers can employ Western blotting and RT-qPCR to confirm DMTN knockout, immunofluorescence with phalloidin to visualize F-actin distribution, and functional assays such as wound healing and transwell migration/invasion to quantify motility changes. Cell adhesion assays and co-immunoprecipitation of spectrin and actin provide mechanistic insights, while live-cell imaging of actin dynamics offers real-time observations. This knockout model also facilitates drug screening targeting cytoskeletal pathways in cancer. For further details or to acquire this product, please contact Ascent Research.
