The KRT2 Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the KRT2 gene in the HEK293T host cell line. This loss-of-function model provides a versatile tool for studying keratin 2, a type II intermediate filament protein that maintains cytoskeletal integrity and mechanical strength in epithelial cells. As a polyclonal population, the cells constitute a heterogeneous knockout pool that reflects typical gene-disruption outcomes, enabling robust functional assays without clonal selection artifacts.
HEK293T is a human embryonic kidney epithelial cell line stably expressing the SV40 large T antigen, which facilitates high-level recombinant protein expression from SV40 origin-containing plasmids. These adherent cells are widely recognized for their superior transfection efficiency and rapid growth. Although derived from kidney rather than skin, their epithelial character supports investigation of intermediate filament biology, and they readily allow ectopic expression and analysis of keratin proteins such as KRT2 and its partner KRT10.
KRT2 encodes keratin 2, which obligately heterodimerizes with the type I keratin KRT10 to assemble into intermediate filaments predominantly in suprabasal keratinocytes. Its expression is transcriptionally controlled by master epidermal regulators TP63 and NOTCH1, as well as AP-1 factors downstream of EGFR signaling. Once formed, KRT2/KRT10 filaments interact with desmosomal proteins such as desmoplakin (DSP) and junction plakoglobin (JUP), tethering the cytoskeleton to cell-cell adhesion complexes. Gene disruption of KRT2 therefore compromises keratin network architecture, desmosome organization, and epithelial barrier integrity, making this model valuable for dissecting keratin-dependent structural and signaling pathways.
In the HEK293T context, KRT2 knockout facilitates mechanistic studies of keratin filament dynamics without the confounding variables of terminal differentiation found in primary keratinocytes. Co-transfection of KRT2 and KRT10 cDNA constructs allows immunofluorescence-based visualization of filament assembly, while effects on endogenous or co-expressed desmosomal components can be monitored by western blot. The model also supports functional complementation experiments in which disease-associated KRT2 mutants are introduced to assess their ability to restore normal filament networks, directly linking genotype to cytoskeletal phenotype relevant to ichthyosis.
These KRT2 knockout polyclonal cells are well-suited for diverse applications. Transcriptomic analysis (RNA?seq) comparing wild-type and knockout cells can reveal KRT2-dependent gene expression changes tied to keratinocyte differentiation. Small-molecule or genetic screens can be monitored via immunofluorescence for filament organization or TEER measurements for barrier function. Scratch wound assays evaluate keratin 2??s role in collective cell migration. Additionally, the cells serve as a functional complementation platform for keratinopathic ichthyosis research. For detailed protocols and support, contact Ascent Research.
