The HNF4A Knockout Ca Ski Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal population in which the HNF4A gene has been disrupted in the Ca Ski host cell line. This product is supplied as a pool of gene-edited cells derived through CRISPR/Cas9-mediated targeting, ensuring a heterogeneous knockout model that preserves the genetic diversity inherent to polyclonal populations. The polyclonal format is particularly advantageous for studies where clonal variation could confound phenotypic interpretation, such as in metabolic or tumorigenic assays, and it provides a robust loss-of-function system for interrogating HNF4A-dependent signaling networks.
The Ca Ski parental line is an adherent epithelial cell model derived from a cervical carcinoma metastasis and harbors the integrated human papillomavirus type 16 (HPV16) genome. Its stable integration of the HPV16 genome provides a unique backdrop for examining interactions between viral oncoproteins and host transcriptional regulators. As a well-characterized cervical carcinoma line, Ca Ski cells are commonly employed to dissect mechanisms of epithelial transformation, viral-host interplay, and cancer cell metabolism, making them a suitable host for knockout studies that may reveal context-dependent functions of HNF4A in non-hepatic tumors.
HNF4A encodes a nuclear receptor that acts as a master transcriptional regulator by binding DR1 response elements to activate genes essential for hepatocyte differentiation, glucose and lipid metabolism, bile acid biosynthesis, and drug metabolism. The protein is regulated by upstream factors including HNF1A, FOXA2, PPARGC1A, insulin, fasting signals, and fatty acids. It directly transcriptionally regulates downstream targets such as ALB, CYP7A1, CYP3A4, APOB, TTR, and SLC2A2, and it engages in functional interactions with cofactors such as NR1H4, PPARA, CREBBP, EP300, and NCOA1. Through these interactions, HNF4A orchestrates a complex metabolic transcriptional network that governs hepatic and epithelial gene programs.
Disruption of HNF4A in Ca Ski cells abrogates its ability to drive downstream metabolic gene expression, leading to dysregulation of glucose uptake, lipid accumulation, and drug-metabolizing enzyme profiles. Given that Ca Ski cells are of cervical origin, this knockout model provides a unique platform to explore potential non-canonical roles of HNF4A in epithelial tumor biology, including its impact on cell proliferation and metabolic reprogramming. The polyclonal nature of the knockout pool introduces cell-to-cell variability that more closely mimics the heterogeneity of clinical tumor specimens, thereby facilitating translational studies on metabolic syndrome, MODY1, or hepatocellular carcinoma mechanisms in a genetically tractable in vitro system.
Researchers can employ this knockout model across diverse applications such as hepatocyte differentiation studies, diabetes and metabolic disease modeling, liver cancer research, and drug metabolism and toxicity screening. Experimentally, the cells are compatible with a wide array of assays including Western blotting, RT-qPCR, immunofluorescence, RNA-seq, ChIP-qPCR, glucose uptake assays, lipid accumulation measurements, and cell proliferation analyses. The HNF4A Knockout Ca Ski Polyclonal Cells thus serve as a versatile tool for dissecting HNF4A-dependent regulatory circuits and for screening interventions aimed at metabolic and oncogenic pathways. For additional information or to discuss your specific research needs, please contact Ascent Research.
