The EEF1D Knockout Huh-7 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population generated through targeted disruption of the EEF1D gene in the Huh-7 hepatocellular carcinoma cell line. This loss-of-function model is supplied as a heterogeneous pool of edited cells, preserving polyclonal genetic complexity and avoiding clonal selection biases. It serves as a robust system for investigating the functions of the delta subunit of eukaryotic translation elongation factor 1 (eEF1D) in translation control, viral replication, and liver cancer biology.
The parental Huh-7 line was established from a well-differentiated hepatocellular carcinoma of a 57-year-old Japanese male in 1982. These adherent epithelial cells retain key hepatocyte differentiation features, including the ability to secrete plasma proteins, making them a widely used model for hepatic research. Huh-7 cells are particularly valuable for studying hepatitis C virus (HCV) replication, as they support the full viral life cycle, and for exploring hepatocellular carcinoma pathogenesis and therapeutic responses.
EEF1D encodes the ?? subunit of the eEF1 complex, which cooperates with eEF1A, eEF1B??, and eEF1B?? to deliver aminoacyl-tRNAs to the ribosomal A-site during translation elongation. This process is regulated by the mTOR/S6K signaling pathway and is subject to post-translational modifications including phosphorylation and ubiquitination. Beyond its canonical role, eEF1D interacts with viral proteins such as HIV Tat and HCV core, promoting viral mRNA translation. It also associates with apoptotic regulators Bcl-2 and XIAP, and influences cell cycle progression through cyclin D1, thereby linking translation elongation to cell survival and proliferation.
In the Huh-7 hepatocellular carcinoma context, EEF1D disruption provides a powerful tool to dissect the intersection between translation elongation, oncogenic signaling, and viral replication. Huh-7 cells are permissive for HCV infection, and eEF1D facilitates HCV internal ribosome entry site (IRES)-mediated translation. Thus, EEF1D knockout can impair viral protein synthesis and attenuate tumorigenic properties, including unchecked proliferation and apoptosis resistance. This model enables detailed investigation of eEF1D’s contributions to malignant phenotypes and host?Cpathogen interactions, offering insights into antiviral and anticancer strategies.
Researchers can employ these cells in a wide array of functional assays, including polysome profiling and RNA-seq to assess global translation changes, co-immunoprecipitation to map eEF1 complex interactions, and functional assays such as MTS proliferation, Annexin V apoptosis, and colony formation. Western blotting and RT-qPCR enable confirmation of target disruption and analysis of downstream effectors. These applications support drug target validation for hepatocellular carcinoma, mechanistic studies of translation-dependent pathways, and screening of inhibitors targeting the eEF1 complex. For further information and ordering details, please contact Ascent Research.
