The DKK1 Knockout SK-OV-3 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal population designed to disrupt the DKK1 gene in the human SK-OV-3 ovarian adenocarcinoma cell line. This loss-of-function model enables investigation of DKK1-dependent processes in a cancer-relevant context. The polyclonal format provides a diverse ensemble of edited alleles, avoiding the clonal artifacts associated with single-cell-derived lines.
The SK-OV-3 host cell line is a well-characterized model of epithelial ovarian cancer, originating from ascites of a patient with ovarian adenocarcinoma. It features a TP53 mutation and HER2 overexpression, making it valuable for studies of tumor suppressor pathways, oncogenic signaling, and drug resistance. SK-OV-3 is widely used to investigate mechanisms of metastasis and the molecular underpinnings of ovarian cancer progression.
DKK1 encodes a secreted antagonist of canonical Wnt/??-catenin signaling. It binds to the Wnt co-receptors LRP5/6 in partnership with Kremen1/2, promoting endocytosis of the receptor complex and preventing Wnt ligand?CFrizzled?CLRP5/6 signalosome formation. This stabilizes the ??-catenin destruction complex, leading to ??-catenin degradation and suppression of TCF/LEF-mediated transcription of targets such as MYC, CCND1, and AXIN2. DKK1 expression is regulated by TCF/LEF, p53, Msx2, Wnt3a, and BMPs, and it intersects with PI3K/Akt and TGF-?? pathways.
In SK-OV-3 cells, DKK1 dysregulation is implicated in aberrant Wnt pathway activation affecting proliferation, survival, and chemoresistance. The DKK1 knockout in this background permits dissection of Wnt-dependent processes such as epithelial-mesenchymal transition, anoikis resistance, and DNA damage responses. The intrinsic TP53 mutation and HER2 amplification provide a context for examining crosstalk with other oncogenic pathways, revealing potential vulnerabilities for targeted intervention.
This knockout model supports a range of assays, including TOP/FOP luciferase reporter assays, ??-catenin immunofluorescence, western blotting, and RT-qPCR. It is suited for studying cell migration, invasion, and responses to therapeutics, as well as bone metastasis and microenvironment interactions owing to DKK1??s roles in osteogenesis and immune modulation. For further information, contact Ascent Research.
