DSC1 Knockout Raji Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population targeting the human DSC1 gene, encoding desmocollin 1, a calcium-dependent desmosomal cadherin. This heterogeneous pool of gene-disrupted Raji B lymphocytes provides a loss-of-function model for studying desmocollin 1 outside its native epithelial environment. The polyclonal format captures diverse knockout alleles, enhancing experimental robustness.
The parental Raji cell line is an Epstein-Barr virus-positive B lymphocyte line derived from Burkitt??s lymphoma. These lymphoblast-like cells are widely used to model B cell biology, apoptosis, and hematological malignancies. Lacking endogenous desmosomes, Raji cells offer a clean background for ectopic expression and complementation studies of desmosomal proteins, making them ideal for dissecting non-epithelial functions of desmocollin 1.
DSC1 encodes a transmembrane glycoprotein that engages in homophilic and heterophilic interactions with desmogleins and plakophilins at desmosomal junctions. Intracellularly, it binds plakoglobin and desmoplakin, anchoring intermediate filaments to the membrane. Its expression is transcriptionally regulated by TP63 and AP-1, and is modulated by retinoid acid, EGFR signaling, and calcium. Loss of DSC1 disrupts these complexes, enabling focused study of desmosome assembly, keratinization, and crosstalk with pathways such as Wnt.
Knocking out DSC1 in Raji B lymphocytes uncouples desmocollin 1 function from epithelial desmosome context, allowing investigation of its potential non-canonical roles in hematopoietic cells. This system supports complementation assays with wild-type or mutant DSC1 to assess adhesion, signaling, and protein interactions. Its clean background is advantageous for drug screening targeting desmosomal components, while the polyclonal design minimizes clonal bias in phenotypic readouts.
Typical assays include western blotting and RT-qPCR for knockout validation, immunofluorescence for localization studies, and flow cytometry for surface cadherin detection. Co-immunoprecipitation can map DSC1 interactions with plakoglobin and desmoplakin. Transcriptomic analysis via RNA-seq reveals global expression changes. Functional adhesion assays and drug-response profiling are feasible upon re-expression. For technical support and custom applications, please contact Ascent Research.
