The EHMT1 Knockout A2780 Polyclonal Cells product comprises a heterogeneous CRISPR/Cas9-edited polyclonal knockout cell population engineered for the disruption of the euchromatic histone lysine methyltransferase 1 (EHMT1) gene in a human epithelial ovarian carcinoma background. This polyclonal knockout model enables loss-of-function studies in a genetically diverse pool of edited cells, avoiding clonal artifacts and providing a robust platform for investigating EHMT1-dependent biological processes. Researchers are provided with a ready-to-use population for functional genomics, epigenetic profiling, and drug discovery applications.
The parental A2780 cell line was originally derived from an untreated patient with ovarian adenocarcinoma and is widely accepted as a faithful model for high-grade serous ovarian carcinoma (HGSOC). These adherent epithelial cells retain key molecular features of the original tumor and are routinely employed to dissect signaling networks, assess chemosensitivity, and validate oncogenic drivers in ovarian cancer research. The polyclonal knockout population is generated directly from this established host cell background, preserving pathogenic context while eliminating EHMT1 function.
EHMT1 (also known as GLP) encodes a histone lysine methyltransferase that catalyzes mono- and dimethylation of histone H3 at lysine 9 (H3K9me1/me2), leading to chromatin compaction and transcriptional silencing. EHMT1 functions in complexes with EHMT2 (G9a), UHRF1, and HP1 proteins such as CBX5, and interacts with DNMT1 and MPP8 to coordinate DNA methylation and repressive histone modifications. Upstream, EHMT1 is regulated by ATF4, cellular stress pathways, and CDK1/2-mediated phosphorylation. Downstream, it targets H3K9me1/2 at gene promoters of CDKN2A/p16INK4a, HOX gene clusters, and repetitive elements, thereby contributing to heterochromatin organization. In the context of Wnt signaling, EHMT1-mediated repression influences the activity of WNT ligands, FZD receptors, ??-catenin, TCF/LEF transcription factors, and associated regulators GSK3??, AXIN, and APC.
In A2780 ovarian cancer cells, EHMT1-driven H3K9me1/me2 deposition and HP1 recruitment may enforce silencing of tumor suppressor genes, potentially promoting oncogenic phenotypes. Disruption of EHMT1 in this cellular model thus allows direct interrogation of its role in epigenetic cancer mechanisms, including transcriptional reprogramming, cellular senescence, and Wnt pathway modulation. The polyclonal knockout format ensures that a spectrum of editing events is represented, facilitating assessment of gene function without single-clone bias.
This knockout product is suitable for a wide array of research applications, including investigation of epigenetic silencing mechanisms in HGSOC, functional dissection of EHMT1-dependent transcriptional regulation, and screening of small-molecule EHMT inhibitors such as UNC0642. Representative assays include Western blotting for H3K9me1/me2 levels, RT-qPCR for target gene expression (e.g., CDKN2A), ChIP-qPCR for H3K9me2 enrichment at gene promoters, immunofluorescence for HP1 localization, cell proliferation and colony formation studies, and inhibitor sensitivity profiling. For additional information or technical support, please contact Ascent Research.
