DSG1 Knockout HEK293T Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population targeting the human DSG1 gene in HEK293T cells. This gene-edited product provides a loss-of-function model for desmoglein-1, a critical transmembrane component of desmosomes. The polyclonal nature of the knockout pool ensures genetic heterogeneity, allowing functional studies without clonal selection bias. By disrupting DSG1 expression through CRISPR/Cas9-mediated gene disruption, researchers can directly investigate desmosome biology and related signaling pathways in a tractable epithelial cell background.
The HEK293T host cell line is a widely used derivative of HEK293 cells, originally derived from human embryonic kidney epithelium. Stably expressing the SV40 large T antigen, HEK293T cells enable episomal replication of plasmids containing the SV40 origin, significantly enhancing transient protein expression and viral packaging efficiency. This feature makes them an ideal platform for complementation studies, promoter-reporter assays, and rapid evaluation of protein-protein interactions. Their epithelial origin endows them with a competent pool of desmosomal precursors, making them suitable for studying adhesion-related proteins despite lacking mature desmosomes.
DSG1 encodes desmoglein-1, a calcium-dependent cadherin that mediates strong cell-cell adhesion in stratified epithelia. Its extracellular domains engage in homophilic binding, while the intracellular domain recruits plakoglobin (JUP), plakophilin-1 (PKP1), and desmoplakin (DSP) to anchor intermediate filaments. DSG1 is activated by upstream signals including calcium influx, retinoic acid, EGFR signaling, and PKC, and functions downstream of Notch during epidermal differentiation. Loss of DSG1 disrupts desmosome assembly, reduces cortical tension via RhoA GTPase modulation, and liberates plakoglobin, which can translocate to the nucleus and transcriptionally regulate Wnt target genes, thereby linking adhesion to signal transduction.
In HEK293T cells, DSG1 knockout creates a simplified model for dissecting desmosomal adhesion and its crosstalk with signaling pathways. Although these cells do not form fully mature desmosomes, they express key desmosomal components, allowing investigation of early assembly events and protein complex formation without the confounding differentiation state of primary keratinocytes. This system effectively recapitulates molecular phenotypes observed in pemphigus vulgaris, where anti-DSG1 autoantibodies induce epidermal blistering, and in striate palmoplantar keratoderma caused by DSG1 haploinsufficiency. The knockout model thus enables study of adhesion defects and compensatory mechanisms in a genetically homogeneous background.
This DSG1 knockout product is suited for a broad range of applications, including analysis of desmosome assembly kinetics, pemphigus autoantibody pathogenesis, and structural studies of intercellular adhesion. Typical assays include co-immunoprecipitation with plakoglobin and desmoplakin, immunofluorescence of desmosomal components, cell aggregation and calcium-switch adhesion experiments, and luciferase-based reporter assays for ??-catenin/TCF transcriptional activity to evaluate Wnt pathway modulation. It is also valuable for screening small molecules that enhance desmosomal adhesion or counteract acantholysis. For further information or to place an order, please contact Ascent Research.
