The KRT5 Knockout A2780 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population generated from the human A2780 ovarian carcinoma epithelial cell line. This loss-of-function model features targeted disruption of the KRT5 gene, which encodes keratin 5, a type II intermediate filament protein essential for epithelial cell structural integrity. The polyclonal nature of the knockout ensures a heterogeneous population of cells with diverse genetic edits, enabling robust characterization of KRT5-dependent phenotypes without clonal bias.
The A2780 parental cell line was established from ovarian carcinoma tissue of an untreated patient and exhibits adherent epithelial morphology. As a widely used model for ovarian cancer research, A2780 cells retain key characteristics of ovarian carcinoma, including aberrant signaling pathways and potential for invasion. This cellular context is particularly relevant for studying intermediate filament dynamics in epithelial ovarian cancers, where keratins contribute to metastatic behavior and drug resistance.
KRT5 encodes keratin 5, which heterodimerizes with keratin 14 (KRT14) to form intermediate filaments that provide mechanical resilience to basal epithelial cells. Keratin 5 expression is transcriptionally regulated by TP63 and is modulated by EGFR ligands, AP-1, and retinoic acid signaling. Downstream of KRT5, filament assembly engages desmoplakin, plectin, and BPAG1 to link cytoskeletal structures to hemidesmosomes and integrin-mediated adhesions. Disruption of KRT5 by CRISPR/Cas9 eliminates this framework, thereby impairing cell adhesion and cytoskeletal organization.
Knockout of KRT5 in A2780 ovarian carcinoma cells abrogates KRT5/KRT14 intermediate filament formation, leading to compromised mechanical stress responses and altered adhesion properties. This disruption is predicted to interfere with epithelial-mesenchymal transition dynamics and anoikis resistance, processes critical for ovarian cancer metastasis. The model provides a powerful tool to dissect the role of keratin networks in cancer cell plasticity and to identify vulnerabilities that may be exploited therapeutically.
This polyclonal knockout cell pool is suitable for a broad range of investigations, including Western blotting, immunofluorescence, and RT-qPCR for confirming gene disruption and monitoring compensatory filament changes. Functional studies such as migration/invasion assays, adhesion assays, and apoptosis assays can elucidate the impact on metastatic potential and drug sensitivity. Moreover, co-immunoprecipitation assays enable assessment of altered protein interactions within the intermediate filament network. For additional product information or technical support, please contact Ascent Research.
