DOCK1 Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human embryonic kidney cell line HEK293T. This product provides a heterogeneous pool of cells with targeted disruption of the DOCK1 gene, enabling loss-of-function studies of DOCK1-mediated signaling pathways. The polyclonal format offers a rapid and cost-effective approach without the need for clonal isolation, making it suitable for a variety of biochemical and cell-based assays. CRISPR/Cas9 technology introduces gene disruptions across the population, maintaining the genetic background and growth characteristics of the parental HEK293T line.
The HEK293T cell line is a widely used human embryonic kidney epithelial cell derivative, originally generated by transformation with sheared adenovirus type 5 DNA. These cells stably express the SV40 large T-antigen, which allows episomal replication of plasmids containing the SV40 origin of replication, leading to high-level transient protein expression. HEK293T cells are highly transfectable and are commonly employed for recombinant protein production, viral packaging, and functional genomics studies. Their robust growth and well-characterized background make them an ideal host for CRISPR-mediated knockout experiments, including polyclonal pools for pathway dissection and drug target validation.
DOCK1 encodes a guanine nucleotide exchange factor that specifically activates the small GTPases Rac1 and Cdc42 by catalyzing the exchange of GDP for GTP. DOCK1 interacts with ELMO1 and ELMO2 to form a stable complex that translocates to the plasma membrane, where it activates Rac1 downstream of receptors such as EGFR, PDGFR, CXCR4, and integrin ??v??3. Activated Rac1 then stimulates downstream effectors including PAK1, the WAVE regulatory complex, and the Arp2/3 complex, driving actin polymerization and lamellipodia formation. Additional downstream targets such as LIM kinase and cofilin modulate actin filament dynamics, collectively regulating cell morphology, migration, and adhesion. DOCK1 also mediates phagocytosis through cytoskeletal rearrangements required for particle engulfment, and its signaling is modulated by adaptor proteins Crk and p130Cas, as well as the focal adhesion component talin.
In the HEK293T host cell background, disruption of DOCK1 significantly impairs Rac1-mediated cytoskeletal reorganization, providing a powerful model to dissect cell motility and adhesion. Although HEK293T cells are of kidney epithelial origin, they exhibit robust migratory and adhesive behaviors that are dependent on actin dynamics, making them relevant for studying lamellipodia formation and focal adhesion turnover. The availability of a polyclonal DOCK1 knockout population enables researchers to directly assess the functional consequences of DOCK1 loss without the confounding effects of clonal variation, facilitating studies on how DOCK1 integrates signals from growth factor receptors and integrins to coordinate migration and invasion??processes often dysregulated in cancer metastasis.
These cells are ideally suited for applications including cell migration and invasion assays via transwell and wound healing, phagocytosis studies, and cytoskeletal dynamics analysis by F-actin immunofluorescence. Researchers can quantify Rac1 activation levels using G-LISA and assess downstream signaling through phospho-PAK1 western blot. The polyclonal model supports live-cell imaging, genetic rescue experiments, and investigations into primary immunodeficiency, cancer metastasis, and neurodevelopmental processes where DOCK1 function is critical. For further information about this product, please contact Ascent Research.
