The DSC2 Knockout NCI-H1975 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population engineered to disrupt the human DSC2 gene. This product provides a mixed population of NCI-H1975 cells carrying heterogeneous CRISPR-mediated gene disruptions, enabling loss-of-function studies without clonal isolation. The polyclonal format preserves a range of genetic edits, offering a robust system for examining the collective impact of DSC2 ablation on desmosomal adhesion and downstream cellular processes.
The host cell line, NCI-H1975, is an adenocarcinoma-derived epithelial line isolated from a female patient with non-small cell lung cancer. This well-characterized model retains key oncogenic drivers, including EGFR and KRAS mutations, and is widely employed to study lung cancer biology, drug resistance, and metastasis. Its adherent morphology and desmosome integrity make it particularly suited for investigating junctional protein function in epithelial tumor contexts.
DSC2 encodes desmocollin-2, a calcium-dependent cadherin superfamily member that serves as a critical component of desmosomal junctions. Within the desmosome complex, desmocollin-2 interacts directly with desmoglein-2 (DSG2) and links to the intermediate filament network through plakoglobin, desmoplakin, and plakophilin-2. Its expression is transcriptionally regulated by Wnt/??-catenin signaling, TGF-??, and the p63 transcription factor, placing DSC2 at the intersection of pathways governing epithelial integrity and mesenchymal transition. DSC2-mediated adhesion represses epithelial-mesenchymal transition (EMT) programs; thus, its loss can trigger cadherin switching and activate cytoskeletal linker proteins, promoting invasive phenotypes.
In the NCI-H1975 background, DSC2 disruption compromises desmosome assembly, leading to weakened cell?Ccell adhesion and enhanced migratory capacity??hallmarks of metastatic progression. This knockout model enables dissection of how desmosomal dysfunction intersects with oncogenic signaling in lung adenocarcinoma. It is particularly valuable for studying the mechanistic link between adhesion loss and EMT activation, as well as for evaluating therapeutic strategies aimed at stabilizing intercellular junctions or reversing mesenchymal traits.
Researchers can apply this polyclonal knockout population in a variety of assays, including immunofluorescence to assess junctional protein localization, immunoprecipitation to probe protein interactions, and migration/invasion assays to quantify metastatic behavior. It also supports RT-qPCR profiling of EMT markers, western blot analysis of desmosomal components, and drug sensitivity screens targeting cell adhesion pathways. Moreover, this model serves as a translational tool for investigating arrhythmogenic right ventricular cardiomyopathy and skin fragility disorders. For additional technical details or ordering information, please contact Ascent Research.
