The CAV2 Knockout A-549 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal cell population derived from the human A-549 lung adenocarcinoma line. This product comprises a heterogeneous pool of cells carrying targeted disruption of the CAV2 gene, resulting in loss of caveolin-2 protein function. The polyclonal format preserves population-level genetic variability and serves as a physiologically relevant loss-of-function model for studying caveolin-2 biology without clonal selection.
The host A-549 cell line originates from a lung adenocarcinoma of a 58-year-old Caucasian male. It is a well-characterized model of alveolar type II epithelial cells, retaining key features of non-small cell lung cancer, including oncogenic signaling and metastatic capacity. A-549 cells endogenously express caveolin proteins and assemble functional caveolae, providing a directly relevant background in which to examine CAV2-dependent membrane trafficking and signal compartmentalization.
Caveolin-2 functions as a scaffolding protein that oligomerizes with caveolin-1 (CAV1) to shape caveolar invaginations and comparts signaling molecules. It interacts directly with CAV1, epidermal growth factor receptor (EGFR), Src family kinases, G proteins, H-Ras, and endothelial nitric oxide synthase (eNOS). Through these associations, CAV2 modulates the MAPK/ERK cascade (Ras??Raf??MEK??ERK) and the PI3K-Akt-mTOR pathway. Upstream regulators include transforming growth factor ?? (TGF??), peroxisome proliferator-activated receptor ?? (PPAR??), insulin, and oxidative stress. Downstream, CAV2 influences cell cycle progression, migration, and eNOS activity. Genetic disruption of CAV2 uncouples these receptors and effectors from caveolar microdomains, perturbing signal fidelity.
In the A-549 background, CAV2 knockout provides a direct means to dissect caveolin-2’s contributions to lung adenocarcinoma progression. Because caveolae-mediated endocytosis and signal compartmentalization are often dysregulated in cancer, this model enables analysis of how CAV2 loss impacts tumor cell proliferation, migration, and responses to growth factors or matrix signals. The involvement of TGF?? and insulin pathways further supports investigations of epithelial-mesenchymal transition and metastatic behavior.
Researchers can employ these polyclonal knockout cells in diverse experimental workflows. Representative applications include immunofluorescence microscopy to visualize caveolae morphology, RT-qPCR and Western blotting to confirm CAV2 ablation and monitor signaling proteins, migration and invasion assays, and phospho-ERK or phospho-Akt analysis after stimulation. Co-immunoprecipitation can evaluate CAV1-containing complexes and compensatory interactions. Proliferation and drug-response assays are also feasible. This cell population is suitable for mechanistic studies of caveolin-dependent signaling in cancer and for screening compounds that target caveolar pathways. For further information, please contact Ascent Research.
