CAV1 Knockout NCI-H1299 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human non-small cell lung carcinoma cell line NCI-H1299. This product enables loss-of-function studies of the CAV1 gene, which encodes caveolin-1, a scaffolding protein critical for caveolae formation and membrane organization. The polyclonal pool contains a heterogeneous mixture of CAV1-disrupted alleles, providing a robust model for investigating gene function without clonal selection biases.
The NCI-H1299 host cell line is a widely used model of lung adenocarcinoma, originally isolated from a lymph node metastasis of a non-small cell lung cancer patient. These cells harbor a homozygous deletion of the TP53 tumor suppressor gene, which contributes to their aggressive growth characteristics and genomic instability. NCI-H1299 cells are well-characterized for studies of metastatic progression, drug resistance, and oncogenic signaling, making them a relevant context for analyzing CAV1-dependent mechanisms.
Caveolin-1 functions as a scaffold within caveolae, organizing signaling complexes and regulating diverse processes including endocytosis, cholesterol homeostasis, and mechanotransduction. CAV1 interacts with and modulates key signaling molecules such as EGFR, Src family kinases, integrin beta1, and G-protein alpha subunits. Upstream regulators including EGF, TGF-beta, shear stress, and Src kinase control CAV1 expression and localization, while downstream effectors such as eNOS, ERK1/2, AKT, beta-catenin, and STAT3 mediate CAV1-dependent responses. Through its interaction with Cavin proteins (PTRF/Cavin1), CAV1 stabilizes caveolar structures and influences pathways like MAPK/ERK, PI3K/AKT, and Wnt/beta-catenin.
Disruption of CAV1 in NCI-H1299 cells abolishes caveolae formation, leading to dysregulation of EGFR and integrin signaling. This knockout model reveals the dual role of CAV1 in lung cancer: as a tumor suppressor that inhibits proliferation and as a potential promoter of invasion and drug resistance depending on cellular context. The CAV1 knockout polyclonal cells allow researchers to dissect these context-dependent functions, particularly the interplay between caveolin-1 and the TP53-null background, which may influence metabolic reprogramming and sensitivity to chemotherapeutics such as cisplatin.
This knockout product is ideally suited for investigating lung cancer biology, caveolae-mediated trafficking, and signal transduction. Typical applications include western blotting for CAV1 and phospho-ERK/AKT, immunofluorescence to assess caveolar integrity, migration and proliferation assays, and cisplatin sensitivity testing. RNA-seq transcriptome profiling can be employed to map global gene expression changes upon CAV1 loss. For further details, please contact Ascent Research.
