The CAV2 Knockout Huh-7 Polyclonal Cells are a population of Huh-7 hepatoma cells genetically modified by CRISPR/Cas9 to disrupt the CAV2 gene, generating a loss-of-function model for caveolin-2. This polyclonal format contains a mixture of edited alleles, reflecting the heterogeneous knockout genotype across the cell pool. The resulting abrogation of caveolin-2 expression allows investigation of caveolae-dependent processes without clonal selection artifacts. These cells are provided as a ready-to-use research tool for signal transduction and liver cancer studies.
The host Huh-7 cell line originates from a well-differentiated hepatocellular carcinoma resected from a 57-year-old Japanese male. These adherent epithelial cells are a cornerstone model in liver cancer research, extensively employed to study hepatocarcinogenesis, hepatocyte metabolism, and hepatitis virus biology. Huh-7 cells are notably permissive to hepatitis C virus (HCV) replication, enabling detailed analysis of viral entry, replication, and host factor requirements. This background, combined with CAV2 disruption, provides a physiologically relevant system to dissect caveolin-2 function in both oncogenic and viral contexts.
Caveolin-2 is an integral membrane scaffolding protein that co-assembles with caveolin-1 and cavin-1 to form caveolae, flask-shaped plasma membrane invaginations. It directly interacts with and negatively regulates signaling effectors including endothelial nitric oxide synthase (eNOS), Src family kinases, and Ras GTPases. Upstream, CAV2 expression is controlled by FOXO transcription factors, STAT3, NF-??B, and EGF/TGF-?? stimulation, as well as by cholesterol and oxidative stress. Downstream, caveolin-2 depletion unleashes Src-Ras-ERK1/2 and Src-FAK-AKT-mTOR cascades, while also modulating ??-catenin activity and integrin-mediated adhesion. Caveolin-2 thereby integrates extracellular cues to coordinate endocytosis, signal transduction, and lipid trafficking within caveolar microdomains.
In Huh-7 hepatocellular carcinoma cells, disruption of caveolin-2 is expected to impair caveolae biogenesis and caveolae-mediated endocytosis, with consequences for tumor cell pathophysiology. Caveolin-2 scaffolds pro-proliferative and pro-invasive signaling complexes; its loss can attenuate or aberrantly activate MAPK/ERK and PI3K/AKT pathways, thereby influencing proliferation, migration, and invasion in liver cancer models. Additionally, caveolae and caveolin-2 have been implicated in hepatitis C virus entry; thus, this knockout system offers a unique tool to characterize the role of caveolar proteins in HCV internalization and replication. The model also permits investigation of caveolin-2-dependent drug resistance mechanisms.
Common applications include western blotting and RT-qPCR to verify CAV2 knockdown, immunofluorescence and electron microscopy to assess caveolar organization, and functional assays such as MTT, transwell, and phospho-ERK/AKT detection to gauge signaling outputs. Co-immunoprecipitation studies can map caveolin-2 protein interactions, while HCV infection assays enable correlation of caveolin-2 status with viral entry efficiency. These polyclonal cells are suitable for genetic and pharmacological screens focused on caveolae-related pathways. Because of the Huh-7 background, they are compatible with hepatic and viral research workflows. For additional product details or experimental support, please contact Ascent Research.
