The KREMEN2 knockout polyclonal HeLa cells are a CRISPR/Cas9-edited polyclonal population with targeted disruption of the KREMEN2 gene, serving as a loss-of-function model for studying KREMEN2-dependent signaling processes. This polyclonal knockout pool is produced using CRISPR/Cas9-mediated gene disruption in the HeLa cell background, enabling researchers to investigate the functional consequences of KREMEN2 ablation in a well-characterized human epithelial carcinoma model.
HeLa cells are an immortalized human cervical adenocarcinoma cell line positive for human papillomavirus type 18 (HPV18) and represent a widely used epithelial model in cancer biology and cell signaling research. Their robust proliferation, ease of manipulation, and extensive characterization make them a suitable host for generating knockout models to dissect molecular mechanisms underlying oncogenic transformation and tumor progression.
KREMEN2 functions as a high-affinity receptor for Dickkopf proteins (DKK1 and DKK2) and acts as a negative regulator of the Wnt/??-catenin pathway. Upon DKK binding, KREMEN2 forms a ternary complex with the Wnt co-receptors LRP5 and LRP6, triggering LRP6 internalization and consequent inhibition of Wnt signal transduction. This disrupts the stabilization of ??-catenin, promotes its proteasomal degradation, and reduces the transcriptional activity of TCF/LEF factors, which normally drive expression of target genes such as MYC, CCND1, and AXIN2. Thus, KREMEN2 serves as a critical modulator of Wnt/??-catenin pathway output downstream of Wnt?CFrizzled interactions.
In the cervical adenocarcinoma HeLa background, disruption of KREMEN2 allows direct assessment of its role in modulating Wnt pathway activity within an epithelial cancer context. Given that aberrant Wnt signaling is implicated in multiple malignancies including colorectal, breast, and hepatocellular carcinomas, this knockout model provides a platform for dissecting KREMEN2-mediated regulation of proliferation, migration, and ??-catenin-dependent transcription in a cell type relevant to human disease.
These polyclonal knockout cells are well suited for a range of functional assays, including Western blotting to monitor ??-catenin and Wnt target protein levels, quantitative RT?qPCR for TCF/LEF-dependent transcripts, TOPFlash luciferase reporter assays, and immunofluorescence analysis of ??-catenin subcellular distribution. Additional applications encompass cell proliferation and migration/invasion studies, drug response profiling, and genetic interaction screens aimed at elucidating Wnt pathway components. For further information, please contact Ascent Research.
