CAV1 Knockout Huh-7 Polyclonal Cells provide a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Huh-7 hepatocellular carcinoma line, with targeted disruption of the CAV1 gene encoding caveolin-1. This heterogeneous pool incorporates diverse loss-of-function alleles, enabling robust functional studies free from clonal bias.
The parental Huh-7 cell line originates from a male Japanese patient with hepatocellular carcinoma and is extensively utilized as a liver epithelial model. These cells retain hallmark features of hepatic tumor cells, including characteristic marker expression and tumorigenic capacity in vivo, making them a well-established system for investigating hepatocarcinogenesis.
Caveolin-1 is a membrane scaffolding protein indispensable for caveolae formation, endocytic trafficking, and signal compartmentalization. It physically associates with and regulates the activity of Src family kinases, EGFR, eNOS, TGF-?? receptors, integrins, G-proteins, and caveolin-2. Upstream control is exerted by PPAR??, FOXO transcription factors, STAT3, p53, and membrane cholesterol levels. Through these interactions, CAV1 suppresses eNOS signaling, promotes Src inactivation, modulates EGFR internalization and recycling, and stabilizes TGF-?? receptor complexes at the plasma membrane. Consequently, caveolin-1 orchestrates the output of the PI3K/AKT, MAPK/ERK, TGF-??/Smad, and Wnt/??-catenin cascades, with direct implications for cell proliferation, survival, adhesion, and motility.
In Huh-7 hepatocellular carcinoma cells, CRISPR/Cas9-mediated disruption of CAV1 ablates caveolae, leading to profound alterations in endocytosis-dependent signal regulation. The loss of caveolin-1 relieves tonic inhibition of eNOS and Src, alters EGFR trafficking dynamics, and reduces integrin-mediated adhesion, all of which converge on downstream effectors such as FAK, ERK, AKT, Smad2/3, and ??-catenin. This polyclonal knockout population thereby recapitulates the signaling rewiring that accompanies CAV1 loss in liver cancer, providing a physiologically relevant model to study its impact on tumor cell proliferation, migration, and therapeutic susceptibility.
Typical experimental applications include Western blotting and immunofluorescence microscopy to confirm caveolin-1 ablation, migration and proliferation assays to assess functional consequences, co-immunoprecipitation to probe altered protein interaction networks, RNA-seq for transcriptome-wide impact analysis, and drug sensitivity testing to identify vulnerabilities in caveolin-deficient hepatocellular carcinoma. These cells are particularly well-suited for studies of caveolae-dependent endocytosis, CAV1 signaling in liver cancer, and cross-talk among the PI3K/AKT, MAPK/ERK, and TGF-?? pathways. For further product specifications and technical assistance, please reach out to Ascent Research.
