CD2AP Knockout HeLa Polyclonal Cells are a heterogeneous CRISPR/Cas9-engineered population with disruption of the CD2AP gene, providing a loss-of-function model for adaptor protein studies. This polyclonal pool, derived from pooled editing events, enables investigation of CD2AP-dependent processes without clonal isolation. The gene disruption facilitates interrogation of actin cytoskeleton remodeling, endocytic trafficking, and receptor-mediated signaling, reflecting diverse editing outcomes that minimize clonal artifacts.
The host HeLa cell line originates from HPV-positive cervical adenocarcinoma and serves as a widely used model in cancer and cell biology due to robust growth and well-characterized signaling. HeLa cells retain actin dynamics, endocytosis, and adhesion pathways, making them suitable for dissecting CD2AP function, especially when podocyte factors like nephrin are ectopically expressed for slit diaphragm studies. Their transformed background also enables exploration of viral oncogenesis?Ccytoskeleton links.
CD2AP encodes a multidomain adaptor protein that physically bridges transmembrane receptors like CD2 and nephrin to the actin cytoskeleton and endocytic machinery. Mechanistically, CD2AP is recruited to activated receptor complexes, where it interacts with c-Cbl and cortactin to coordinate receptor internalization and actin polymerization. Its activity is regulated by Src family kinases such as Fyn and phosphoinositide signals, while downstream it scaffolds the PI3K p85 subunit and the AP-2 complex to propagate signals governing focal adhesion dynamics, lamellipodial protrusion, and vesicle trafficking. Disruption of CD2AP decouples these receptor-proximal events, impairing processes such as transferrin endocytosis and podocyte foot process maintenance.
In HeLa cells, CD2AP knockout allows dissection of actin?Ccortactin?CPI3K cascades critical for motility, invasion, and endosomal sorting??processes often deregulated in metastasis. Loss of CD2AP alters cortactin localization, reduces PI3K/Akt activation, and perturbs focal adhesions, enabling systematic analysis of cytoskeletal reorganization. Co-expression of nephrin can reconstitute podocyte-like signaling, facilitating studies of slit diaphragm pathology and focal segmental glomerulosclerosis.
Researchers can employ this knockout model in diverse assays: Western blotting to verify CD2AP ablation and monitor compensatory changes, immunofluorescence to visualize actin architecture and cortactin redistribution, and co-immunoprecipitation to map altered protein interactions. Functional endocytosis assays using transferrin uptake quantify trafficking defects, while migration and invasion assays reveal effects on cell motility. RT-qPCR can assess transcriptional responses in PI3K pathway components and nephrin-related genes. For further technical details or custom inquiries, please contact Ascent Research.
