The KAZN Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal cell population in which the KAZN gene has been disrupted to eliminate functional kazrin protein expression. This loss-of-function model offers a genetically stable resource for investigating desmosome biology and epithelial barrier function, providing a heterogeneous knockout background that avoids biases inherent to single-cell clones.
HeLa cells are an immortalized human cervical adenocarcinoma cell line positive for human papillomavirus type 18 (HPV-18). As an epithelial model, HeLa cells endogenously express key cell adhesion molecules and intermediate filament components, making them an ideal host for studying desmosome assembly, keratinocyte-like differentiation, and cancer-related adhesion dynamics.
The KAZN gene encodes kazrin, a critical adaptor protein that facilitates desmosome assembly by linking desmosomal cadherins, such as desmoglein and desmocollin, to the keratin intermediate filament network via direct interactions with desmoplakin and plakoglobin. Transcription of KAZN is governed by upstream regulators including p63, Notch1, and the AP-1 transcription factor complex (Fos/Jun), positioning kazrin at the convergence point of differentiation cues and adhesive junction formation.
In HeLa cells, disruption of KAZN ablates kazrin function, disrupting desmosome integrity and compromising cell?Ccell adhesion and epithelial barrier properties. This knockout model enables detailed examination of how loss of kazrin promotes desmosome disassembly, potentially inducing a more migratory and invasive phenotype characteristic of advanced carcinomas. It therefore serves as a valuable system for dissecting the molecular mechanisms underlying metastasis and disorders of epithelial adhesion, such as ectodermal dysplasia.
This polyclonal KAZN knockout cell population is suited for a broad range of experimental workflows, including Western blot analysis of desmosomal proteins (desmoplakin, plakoglobin, desmoglein), immunofluorescence localization of desmosome components, and TEER-based barrier integrity measurements. Researchers can employ cell migration and invasion assays to assess metastatic potential, as well as co-immunoprecipitation to map protein interaction networks. The cells also provide a platform for screening small molecules that modulate desmosome function. For further information or to place an order, please contact Ascent Research.
