The AUH Knockout SK-HEP-1 Polyclonal Cells product consists of a polyclonal population of SK-HEP-1 human hepatocellular carcinoma cells that have undergone CRISPR/Cas9-mediated disruption of the AUH gene, creating a loss-of-function model for the encoded bifunctional mitochondrial enzyme. This heterogeneous knockout pool is suitable for bulk population studies, providing a convenient and robust system to interrogate AUH-dependent processes without clonal selection or single-cell isolation. The polyclonal format preserves genetic diversity while ensuring effective target gene disruption, making it ideal for experiments where clonal artifacts are undesirable.
The host cell line, SK-HEP-1, was originally derived from the ascites of a 52-year-old male with liver adenocarcinoma and represents a widely used liver parenchymal cell model with tumorigenic properties and notable endothelial-like differentiation capacity. These adherent epithelial cells exhibit characteristics of both hepatocellular carcinoma and endothelial lineages, offering a unique platform for studying liver cancer biology, metabolic reprogramming, and the interplay between mitochondrial function and tumorigenesis. The SK-HEP-1 background thus provides a clinically relevant context for examining the consequences of AUH ablation in a malignant liver setting.
The AUH gene encodes a bifunctional mitochondrial protein that catalyzes the hydration of trans-2-enoyl-CoA to 3-hydroxyacyl-CoA in the leucine degradation pathway and binds AU-rich elements in the 3′ UTRs of select mRNAs, potentially regulating their stability. It forms complexes with ACADSB and HSD17B10, key components of the leucine degradation machinery, and interfaces with the mitochondrial trifunctional protein (HADHA/HADHB). Disruption of AUH results in deficient leucine catabolism and accumulation of 3-methylglutaconic acid, a hallmark of 3-methylglutaconic aciduria type I (MGCA1), and may perturb post-transcriptional gene regulation.
In the SK-HEP-1 hepatocellular carcinoma context, AUH knockout polyclonal cells allow investigation of how mitochondrial leucine metabolism interfaces with cancer cell proliferation, survival, and metabolic adaptability. Given the liver??s central role in amino acid homeostasis, this model is ideal for exploring whether loss of AUH-mediated leucine degradation rewires metabolic pathways, sensitizes cells to stress, or modulates protumorigenic signaling. Moreover, the RNA-binding function may impact post-transcriptional regulation of genes involved in endothelial-like differentiation, a process linked to tumor vascular mimicry and metastasis.
This knockout model supports a wide range of experiments, including western blotting, enoyl-CoA hydratase activity assays, and metabolomic profiling of leucine intermediates. Transcriptomic profiling, RNA immunoprecipitation, and mitochondrial functional studies further define molecular consequences. This AUH knockout SK-HEP-1 polyclonal cell population is valuable for mitochondrial disorder, aminoacidopathy, and cancer metabolism research. Contact Ascent Research for technical support.
