The GPRC5A Knockout SK-HEP-1 Polyclonal Cells product comprises a genetically heterogeneous population of SK-HEP-1 cells generated through CRISPR/Cas9-mediated disruption of the GPRC5A gene. This polyclonal knockout pool offers a loss-of-function model for studying the tumor suppressor gene GPRC5A without the clonal selection biases inherent in single-cell-derived lines. The targeted gene disruption ablates GPRC5A expression, enabling researchers to interrogate its downstream effects in a liver adenocarcinoma background. As a polyclonal population, this reagent provides a more representative sampling of knockout variants, facilitating robust and reproducible functional studies.
The SK-HEP-1 host cell line is a well-characterized human hepatic adenocarcinoma cell line originally derived from the ascitic fluid of a 52-year-old male patient. These cells display an adherent, epithelial morphology and are widely employed as a model system for liver cancer biology, including hepatocarcinogenesis and metastatic progression. SK-HEP-1 cells retain key signaling pathways relevant to hepatic malignancy, making them an ideal platform for evaluating the functional roles of tumor suppressors such as GPRC5A in a disease-relevant context. Their mesenchymal features also support studies of cell migration and invasion.
GPRC5A functions as a retinoic acid-inducible tumor suppressor frequently silenced in cancers. It is transcriptionally upregulated by retinoic acid/RAR/RXR and epigenetically regulated by DNA methylation and histone modifications. GPRC5A negatively regulates NF-??B signaling via interactions with IKK complex and TRAF2, suppressing p65/p50, and antagonizes Wnt/??-catenin by promoting ??-catenin degradation or interfering with TCF/LEF transcription. Loss of GPRC5A thus increases expression of Cyclin D1, c-Myc, Bcl-2, and MMP9, enhancing proliferation, survival, and invasion. Pro-inflammatory cytokines TNF-?? and IL-1?? also modulate its expression.
In the context of SK-HEP-1 liver adenocarcinoma cells, the GPRC5A knockout model is particularly valuable for dissecting tumor-suppressive mechanisms that restrain hepatic tumor growth and metastasis. Since GPRC5A is commonly downregulated in hepatocellular carcinoma via promoter hypermethylation, this knockout system recapitulates an epigenetic silencing event and allows assessment of downstream pathway dysregulation. Researchers can investigate how GPRC5A loss alters NF-??B and Wnt/??-catenin transcriptional programs, cell cycle control, and apoptotic thresholds. The model also provides a platform for evaluating therapeutic strategies to restore GPRC5A expression or target its downstream effectors.
Key research applications of the GPRC5A Knockout SK-HEP-1 Polyclonal Cells include functional characterization of GPRC5A in tumor biology, identification of protein?Cprotein interaction partners via co-immunoprecipitation, and epigenetic profiling of the GPRC5A locus using ChIP-qPCR for histone modifications. Assays for cell proliferation, apoptosis, and cell cycle analysis quantify phenotypic changes. NF-??B and Wnt/??-catenin reporter assays (e.g., TOP/FOP flash) monitor pathway activity, while migration and invasion assays assess metastatic potential. These cells serve as a versatile tool for liver cancer research, drug target validation, and screening for GPRC5A interactors or upstream regulators. For further information or technical assistance, please contact Ascent Research.
