The CAV1 Knockout Ca Ski Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human cervical epidermoid carcinoma Ca Ski line, featuring targeted disruption of the CAV1 gene. The polyclonal nature maintains genetic heterogeneity, avoiding clonal selection artifacts and ensuring population-level responses in loss-of-function studies, which is critical for capturing the full spectrum of cellular behaviors.
The Ca Ski cell line originates from a cervical epidermoid carcinoma metastasis and stably integrates human papillomavirus type 16 (HPV-16) genomes, expressing the viral E6 and E7 oncoproteins that inactivate the tumor suppressors p53 and Rb. This configuration drives constitutive proliferation and genomic instability, providing a robust and clinically relevant model for studying HPV-driven cervical cancer biology, tumor progression, and therapeutic interventions.
Caveolin-1 is a principal structural protein of caveolae that scaffolds signaling complexes via its caveolin-scaffolding domain (CSD), including EGFR, Src, integrins, and PTRF/Cavin-1. It is regulated by upstream inputs such as TGF-beta, EGF, integrin ligands, cholesterol, and Src kinase, and it modulates downstream effectors Akt, ERK1/2, eNOS, Stat3, and beta-catenin. By organizing PI3K/Akt and MAPK/ERK signaling cascades, caveolin-1 controls cell proliferation, survival, and migration. CAV1 knockout disrupts these organized microdomains, leading to delocalization of signaling proteins and aberrant signal transduction.
In HPV-16-positive cervical cancer, caveolin-1 expression is frequently altered and exhibits context-dependent tumor-suppressive or oncogenic activities. CAV1 knockout in Ca Ski cells enables dissection of its impact on HPV oncoprotein-driven signaling and PI3K/Akt-MAPK/ERK pathway rewiring. Loss of caveolin-1 promotes enhanced migration and invasion, potentially contributing to drug resistance, making this model valuable for investigating metastatic mechanisms and identifying therapeutic vulnerabilities in cervical cancer.
Typical applications include gene expression analysis by RT-qPCR, protein profiling via Western blotting, immunofluorescence, flow cytometry, and functional migration, invasion, and cell viability assays. Phospho-Akt/Akt and phospho-ERK1/2/ERK1/2 analyses permit precise signaling pathway interrogation. The cells are well-suited for drug resistance studies, high-content screening, interactome mapping, and biomarker discovery in CAV1-deficient contexts. For further technical information, please contact Ascent Research.
