The ABL2 Knockout HEK293T Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population in which the ABL2 gene has been disrupted to eliminate ABL2 protein expression. This model provides a powerful tool for investigating ABL2-dependent signaling pathways and cellular functions in a widely used human embryonic kidney background. The polyclonal nature of the knockout ensures a heterogeneous mix of edited cells, which can be used directly for downstream assays without clonal isolation, offering a convenient and cost-effective loss-of-function model.
The host cell line, HEK293T, is a derivative of the HEK293 human embryonic kidney epithelial cell line, stably expressing the SV40 large T antigen. This modification promotes high-level episomal replication of plasmids containing the SV40 origin of replication, making HEK293T cells a preferred system for transient protein overproduction, lentiviral packaging, and signal transduction studies. Their robust growth and well-characterized signaling networks provide an ideal platform for exploring the consequences of ABL2 ablation.
ABL2 encodes a non-receptor tyrosine kinase that serves as a key mediator of signal transduction from growth factor receptors and integrins to the actin cytoskeleton. Upon activation by upstream regulators such as PDGFR, EGFR, and integrin receptors, ABL2 phosphorylates a variety of downstream targets including cortactin, WAVE2, Crk, p130Cas, and ??-catenin, thereby promoting actin remodeling, cell adhesion, and migration. ABL2 operates within a multiprotein complex through direct interactions with adaptor proteins Abi1/Abi2, paxillin, vinculin, and 14-3-3. A canonical signaling axis involves PDGFR/integrin ?? ABL2 ?? Crk ?? DOCK180 ?? Rac1 ?? WAVE complex, culminating in lamellipodia formation and cell motility. Disruption of ABL2 abolishes these phosphorylation cascades, uncoupling receptor activation from cytoskeletal reorganization.
In the HEK293T background, knockout of ABL2 enables dissection of its specific contributions to actin dynamics independent of interactions with other oncogenic pathways. Given that HEK293T cells recapitulate many aspects of epithelial cell signaling, this model is particularly suited to examining ABL2??s role in processes such as cell migration, invasion, and adhesion. The polyclonal knockout population avoids clonal selection artifacts, preserving the natural heterogeneity of the edited pool and allowing for studies that more closely reflect population-level responses. This system is valuable for elucidating how ABL2 integrates signals from multiple receptors to coordinate cytoskeletal changes.
Researchers can employ this ABL2 knockout model in a wide range of experimental settings, including the study of metastatic cancer biology, glioblastoma, and invasive breast carcinoma. Typical applications involve assessing cell migration and invasion using transwell assays, visualizing actin cytoskeleton and focal adhesions via immunofluorescence, and analyzing ABL2 signaling complexes through co-immunoprecipitation. Additional applications include screening of ABL2 kinase inhibitors, performing phospho-kinase antibody arrays to map signaling changes, and quantifying gene expression changes via RT-qPCR of ABL2 target genes. The model is also amenable to complementation experiments where wild-type or mutant ABL2 is reintroduced. For further technical details or customized inquiries, please contact Ascent Research.
