The DSC2 Knockout HT29 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal cell population featuring targeted disruption of the desmocollin 2 (DSC2) gene in the HT29 human colorectal adenocarcinoma cell line. This pooled knockout model provides a genetically heterogeneous loss-of-function system for studying desmosomal cadherin biology without clonal selection, thereby preserving population-level diversity while eliminating DSC2 expression across a mixed cell pool. The product serves as a versatile tool for investigating the consequences of DSC2 ablation in epithelial-derived tumor cells.
The HT29 parental line is a well-established model derived from a primary colorectal adenocarcinoma of a 44-year-old female. These cells display classic epithelial morphology, form tight junctions, and secrete mucin, making them particularly suitable for studies of intestinal epithelial barrier function, polarity, and malignancy. Their robust growth characteristics and well-characterized signaling pathways render them a reliable host for gene-editing applications, enabling detailed mechanistic dissection of adhesion molecule functions in colorectal cancer biology.
DSC2 encodes a calcium-dependent desmosomal cadherin that mediates strong cell-cell adhesion by interacting with key desmosomal components, including plakoglobin (JUP), desmoplakin (DSP), plakophilin (PKP), and desmoglein (DSG) family members. DSC2 expression is regulated by transcription factors such as TP63, AP-1, and the Snail family, and is influenced by Wnt/??-catenin and TGF-?? signaling. Downstream, DSC2 participates in anchoring keratin intermediate filaments, modulating plakoglobin/??-catenin signaling, and cross-regulating the PI3K/AKT pathway, thereby integrating mechanical adhesion with intracellular signaling networks critical for epithelial homeostasis.
In the colorectal cancer context, loss of DSC2 disrupts desmosome assembly, compromising epithelial barrier integrity and promoting a more invasive phenotype. This knockout model enables researchers to dissect how desmosomal dysfunction contributes to tumor progression, epithelial-mesenchymal transition (EMT), and metastatic dissemination. Given HT29 cells?? origin, the DSC2 knockout population is particularly valuable for examining the interplay between cell adhesion and oncogenic signaling pathways that drive colorectal carcinogenesis and influence therapeutic responses.
Typical applications of this polyclonal knockout population include EMT and invasion assays using scratch wound healing or Transwell migration/invasion formats, barrier integrity measurements via transepithelial electrical resistance (TEER), and molecular profiling by Western blotting, immunofluorescence, RT-qPCR, or RNA-seq. The model also supports drug resistance studies, screening of adhesion-targeted therapies, and in vivo xenograft tumor growth analyses. For additional details or custom projects, please contact Ascent Research.
