The IL18 Knockout Ca Ski Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human Ca Ski cervical carcinoma cell line, engineered for targeted disruption of the IL18 gene. This loss-of-function model provides a genetically heterogeneous population of cells with impaired IL-18 expression, enabling robust functional studies without clonal selection artifacts.
The Ca Ski host cell line is an epithelial-like, adherent line originally isolated from a metastatic site of a cervical squamous cell carcinoma. It maintains an integrated HPV16 genome, establishing it as a widely used model for human papillomavirus-associated cervical carcinogenesis. Its well-characterized HPV-positive status renders it particularly relevant for investigating oncogenic virus?Chost interactions and the role of inflammatory mediators in cervical malignancy.
IL-18 is a potent pro-inflammatory cytokine that is synthesized as an inactive precursor and classically activated through proteolytic cleavage by caspase-1 within the NLRP3 inflammasome complex. Upon secretion, mature IL-18 engages the heterodimeric receptor composed of IL-18R?? and IL-18R??, leading to recruitment of the adaptor protein MyD88. This triggers downstream signaling cascades involving IRAK4, IRAK1, TRAF6, TAK1, and subsequently the activation of NF-??B and MAPK pathways, including JNK and p38. These events culminate in the transcriptional induction of IFN-??, TNF-??, chemokines such as CCL2 and CXCL10, and other inflammatory mediators, thereby driving Th1-type immune responses and modulating anti-tumor immunity.
In the context of cervical cancer, IL-18 is implicated in shaping the tumor microenvironment by influencing immune cell infiltration and cytokine networks. Ca Ski cells, as an HPV16-positive model, offer a physiologically relevant platform to dissect how IL-18 signaling intersects with viral oncogenesis and host inflammatory responses. Knockout of IL18 in this background permits the investigation of inflammasome-dependent and -independent roles of IL-18 in tumor cell proliferation, migration, and immune evasion, as well as its crosstalk with NF-??B and MAPK pathways.
Typical research applications include functional dissection of the NLRP3?Ccaspase-1?CIL-18 axis in cervical cancer, screening of small-molecule inhibitors targeting IL-18 signaling, and transcriptomic or proteomic profiling of IL-18-dependent gene networks. Compatible assays range from ELISA and Western blotting for IL-18 and downstream effectors, to caspase-1 activity measurements, NF-??B luciferase reporter assays, RT-qPCR for IFN-?? and inflammatory cytokines, tumor?Cimmune cell co-culture systems, Transwell migration/invasion assays, and multiplex cytokine bead arrays. For further technical details or ordering information, please contact Ascent Research.
