CAV2 Knockout HAP1 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed for targeted disruption of the CAV2 gene in the HAP1 cell line. By abolishing caveolin-2 expression, this model circumvents functional redundancy often seen in diploid systems, yielding a heterogeneous pool of gene-disrupted cells without requiring single-cell cloning.
The HAP1 cell line is a near-haploid human cell line (except for disomy of chromosome 8) derived from a male chronic myeloid leukemia patient in blast crisis. Its adherent, epithelial-like growth and haploid karyotype render it exceptionally suited for genetic screens and knockout studies, as the absence of a second allele ensures clear genotype-phenotype associations following target gene disruption.
Caveolin-2 (CAV2) encodes an integral membrane protein that hetero-oligomerizes with caveolin-1 (CAV1) to scaffold the formation of caveolae, specialized plasma membrane invaginations essential for receptor-mediated endocytosis and signal transduction. Its activity is modulated by upstream factors such as Src kinase, protein kinase C, cholesterol, oxidative stress, and hypoxia, and it relays signals to downstream targets including STAT3, ERK1/2, AKT, eNOS, and Ras. CAV2 functionally interacts with partners like PTRF/Cavin1, EGFR, Src, the insulin receptor, and integrins, and operates within a molecular network comprising CAV1, Cavin1, clathrin, dynamin, and Rab5. Disruption of CAV2 impairs caveolae integrity, leading to attenuated growth factor-induced signaling and altered cellular proliferation and migration.
Within the HAP1 background, CAV2 knockout provides a sensitive loss-of-function system for dissecting caveolae biology, as the haploid state eliminates compensatory allele effects. This facilitates precise examination of pathways such as PI3K/AKT and Ras/MAPK, and enables analysis of endocytic trafficking dynamics for receptors like EGFR and insulin receptor, with heightened detection of subtle signaling changes.
This knockout population supports diverse research applications, including mechanistic studies of caveolae-mediated endocytosis, cancer signal transduction, drug delivery evaluation, and metabolic disease modeling. Representative assays encompass Western blotting, immunofluorescence for caveolae integrity, co-immunoprecipitation with CAV1, RT-qPCR, cell migration, phospho-AKT/ERK analysis, cholesterol uptake, and flow cytometry for surface receptor internalization. For further technical information, please contact Ascent Research.
