GSE1 Knockout SK-HEP-1 Polyclonal Cells are a human hepatic adenocarcinoma cell population engineered via CRISPR/Cas9-mediated disruption of the GSE1 gene. This polyclonal knockout product provides a heterogeneous pool of SK-HEP-1 cells carrying diverse loss-of-function mutations at the GSE1 locus, enabling functional studies without clonal selection bias.
The SK-HEP-1 cell line was established from the ascites of a male patient diagnosed with liver adenocarcinoma and serves as a widely utilized in vitro model for hepatocellular carcinoma (HCC). This adherent epithelial line retains key oncogenic features of HCC, making it an appropriate platform for interrogating tumor suppressor and oncogene functions in the hepatic context.
GSE1 encodes a scaffold subunit of the CoREST transcriptional corepressor complex, which orchestrates gene silencing through coordinated histone deacetylation by HDAC1/2 and demethylation by LSD1 (KDM1A). Within this complex, GSE1 bridges RCOR1 and other corepressor components. GSE1 activity is regulated upstream by transcriptional repressors such as REST/NRSF, SNAIL1, ZEB1, and MYC, and its downstream transcriptional targets include the tumor suppressor CDH1 (E-cadherin), SYP, BDNF, and the cell cycle regulator CDKN1A (p21). Disruption of GSE1 impairs complex integrity, leading to derepression of these target genes and attenuation of oncogenic transcriptional programs.
In hepatic adenocarcinoma cells, GSE1 knockout perturbs the CoREST-mediated suppressive network, providing a system to study the epigenetic mechanisms underlying hepatocellular carcinoma. The loss of GSE1 is expected to upregulate genes such as CDH1 and CDKN1A, potentially reversing epithelial-to-mesenchymal transition and suppressing proliferation. This model is thus employed in chromatin remodeling investigations and drug target validation, particularly for inhibitors of the CoREST complex.
Researchers utilize this polyclonal knockout population in a variety of functional assays, including western blotting to verify GSE1 ablation, RT-qPCR to quantify target gene expression changes, chromatin immunoprecipitation (ChIP)-qPCR to assess histone modification dynamics, MTT and colony formation assays to measure proliferative capacity, wound healing or Transwell migration assays to evaluate cell motility, flow cytometry for apoptosis analysis, and transcriptome-wide RNA-seq. For detailed technical specifications and experimental support, please contact Ascent Research.
