The EHD2 Knockout 786-O Polyclonal Cells constitute a polyclonal knockout population of human 786-O renal cell carcinoma cells generated via CRISPR/Cas9-mediated disruption of the EHD2 gene. This heterogeneous model is designed for loss-of-function studies of EHD2, an ATPase that senses and remodels membrane curvature and is essential for caveolae biogenesis. The polyclonal format minimizes clonal selection artifacts, enabling robust analysis of EHD2-dependent phenotypes in a cancer-relevant background.
The parental 786-O cell line is a well-characterized model of clear cell renal cell carcinoma (ccRCC) with biallelic VHL inactivation, leading to constitutive stabilization of HIF1A. HIF1A transcriptionally activates numerous genes, including EHD2, thereby connecting hypoxia-driven signaling to endocytic trafficking. This genetic context makes 786-O cells an ideal platform to study EHD2 function within the molecular framework of ccRCC.
EHD2 localizes to caveolar invaginations and regulates membrane dynamics through ATP-dependent interactions with CAV1 and PACSIN2. It also associates with F-actin and EHBP1 to coordinate cytoskeletal remodeling. EHD2 activity is governed by upstream inputs from integrin signaling and CAV1, while it controls downstream processes including caveolae stability, EGFR internalization, and integrin-mediated cell adhesion. Thus, EHD2 disruption impairs the balance of caveolae-mediated endocytosis and cell migration.
In VHL-deficient 786-O cells, knockout of EHD2 is predicted to disrupt caveolae-dependent endocytic trafficking, with consequences for integrin recycling and EGFR signaling. Since HIF1A-driven EHD2 expression may enhance caveolar activity in ccRCC, its loss could attenuate tumor cell invasion and migration. This model therefore provides a physiologically relevant system to investigate the role of caveolar endocytosis in cancer metastasis.
Researchers can employ this polyclonal EHD2 knockout model in a variety of assays, including transwell migration, cell adhesion, and EGFR internalization studies to monitor receptor trafficking. Standard techniques such as Western blot and immunofluorescence enable protein expression analysis and validation of pathway alterations. The cells are also suitable for screening small molecules targeting caveolae-mediated endocytosis or EHD2 ATPase activity. For additional information, please contact Ascent Research.
