The DNTTIP1 Knockout SK-HEP-1 Polyclonal Cells product is a heterogeneous population derived from the human liver adenocarcinoma cell line SK-HEP-1, engineered using CRISPR/Cas9-mediated gene disruption to ablate DNTTIP1 expression. This polyclonal knockout model provides a versatile platform for investigating the functional roles of DNTTIP1 in transcriptional regulation and chromatin dynamics without the constraints of clonal selection, thereby preserving some level of genetic heterogeneity inherent to the parental line.
The parental SK-HEP-1 cell line was originally established from the ascites of a patient with liver adenocarcinoma and exhibits a unique dual epithelial and endothelial phenotype, making it a valuable model for studying hepatic adenocarcinoma biology. SK-HEP-1 cells are widely employed in cancer research to dissect mechanisms of tumorigenesis, metastasis, and drug resistance, and their characterized growth properties support a broad range of cellular and molecular assays.
DNTTIP1 (terminal deoxynucleotidyltransferase-interacting protein 1) is a transcriptional corepressor that directly interacts with DNTT (TdT) and functions as an integral component of the nucleosome remodeling and deacetylase (NuRD) complex, which includes core subunits such as MTA1, HDAC1, HDAC2, CHD4, and MBD3. Through the NuRD complex, DNTTIP1 mediates gene silencing via histone deacetylation and ATP-dependent chromatin remodeling, thereby modulating accessibility of regulatory DNA regions. Its activity is regulated upstream by ATM/ATR kinases and NOTCH1 signaling, and it influences downstream effectors including CDH1 transcription and TdT catalytic activity. Additionally, DNTTIP1 participates in V(D)J recombination and DNA repair pathways, linking it to both lymphoid-specific processes and broader genome maintenance mechanisms.
In the context of SK-HEP-1 liver adenocarcinoma cells, knockout of DNTTIP1 offers a pertinent loss-of-function system to evaluate how disruption of this corepressor impacts malignant phenotypes. Given the NuRD complex??s roles in controlling cell proliferation, epithelial-mesenchymal transition, and genomic stability, DNTTIP1-deficient SK-HEP-1 cells are expected to exhibit altered transcriptional programs that may affect tumor cell growth, migration, and response to DNA-damaging agents. The polyclonal nature of this product enables assessment of phenotypic variability and avoids artifacts associated with clonal adaptation, providing a robust model for dissecting DNTTIP1-dependent pathways in hepatocellular carcinoma.
This product is suitable for a wide range of applications, including but not limited to, chromatin immunoprecipitation (ChIP) to map NuRD occupancy, RNA-seq and RT-qPCR for transcriptome profiling, co-immunoprecipitation to validate protein interactions with DNTT or NuRD components, and functional assays such as cell proliferation, migration, apoptosis, and drug sensitivity testing. These applications facilitate detailed mechanistic studies of DNTTIP1 in liver adenocarcinoma, DNA repair, and transcriptional repression. For further information or to inquire about custom cell engineering services, please contact Ascent Research.
