This product is a CRISPR/Cas9-edited polyclonal knockout cell population targeting the HDAC1 gene in the human KYSE-150 esophageal squamous cell carcinoma cell line. The HDAC1 Knockout KYSE-150 Polyclonal Cells provide a heterogeneous pool of gene-disrupted cells, enabling loss-of-function studies without clonal selection artifacts. They serve as a versatile tool for investigating HDAC1-dependent transcriptional regulation and epigenetic mechanisms in cancer.
KYSE-150 cells were established from a moderately differentiated invasive esophageal squamous cell carcinoma and display epithelial morphology. They are widely utilized as a model system for esophageal cancer research, recapitulating key oncogenic processes such as aberrant proliferation, apoptosis resistance, and invasive potential. The cell line harbors genetic alterations typical of ESCC, making it a relevant host for studying HDAC1-mediated tumor biology.
HDAC1 is a class I histone deacetylase that functions as a core component of co-repressor complexes including Sin3, NuRD, and CoREST. Through deacetylation of histone H3 and H4 tails, HDAC1 promotes chromatin compaction and transcriptional silencing of target genes. Its expression is regulated by transcription factors such as SP1, E2F, and p53, and its enzymatic activity can be modulated by CK2-mediated phosphorylation. HDAC1 interacts with a network of proteins, including Sin3A, RbAp46/48, MTA1, MBD2, pRB, and HDAC2, to mediate repression of genes involved in cell cycle control (e.g., CDKN1A/p21, CCND1/cyclin D1), apoptosis (e.g., BCL-2), and epithelial integrity (e.g., CDH1/E-cadherin). Disruption of HDAC1 leads to hyperacetylation of histones, release of transcriptional repression, and reactivation of these downstream targets.
In the context of esophageal squamous cell carcinoma, HDAC1 is frequently overexpressed and linked to aggressive tumor behavior. Loss of HDAC1 function in KYSE-150 cells is expected to impair the assembly of repressor complexes, resulting in chromatin relaxation and re-expression of tumor suppressor genes. This polyclonal knockout model enables the study of HDAC1-dependent epigenetic silencing mechanisms that drive ESCC progression. It also facilitates the investigation of compensatory roles of other class I HDACs, such as HDAC2, and the impact on oncogenic signaling pathways including Notch, Wnt, and TGF-??.
These polyclonal HDAC1 knockout cells are suitable for a range of experimental applications. Researchers can utilize them for western blotting to assess global histone acetylation levels (H3 and H4) and changes in HDAC1 target protein expression. Chromatin immunoprecipitation followed by quantitative PCR (ChIP-qPCR) allows mapping of histone acetylation marks at specific gene promoters. Functional assays such as proliferation, colony formation, apoptosis, migration, and invasion assays can be performed to evaluate the role of HDAC1 in cancer cell behavior. Additionally, these cells can serve as a control for HDAC inhibitor drug screening and for flow cytometry-based cell cycle analysis. For any inquiries regarding this product, please contact Ascent Research.
