The DOCK5 Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed for loss-of-function studies of the DOCK5 gene in a HeLa host background. This gene-disrupted model provides a powerful tool for dissecting DOCK5-dependent signaling events that govern cytoskeletal organization, cell migration, and adhesion. The polyclonal format avoids selection bias inherent in single-cell cloning and maintains population-level heterogeneity, making it suitable for experiments requiring pooled knockout cells rather than clonal derivatives. Researchers can employ this resource to interrogate the functional significance of DOCK5 in Rac-mediated biological processes.
The parental HeLa cell line is an extensively characterized immortalized epithelial line isolated from a human cervical adenocarcinoma and is positive for human papillomavirus type 18 (HPV-18). These cells exhibit high transfection efficiency and well-mapped signaling networks, making them ideal for gene-editing approaches. Their adherent nature and widespread use in cell migration and adhesion studies offer a relevant context for investigating DOCK5, which plays a central role in actin cytoskeleton reorganization.
DOCK5 is a Rac-specific guanine nucleotide exchange factor (GEF) that, in complex with ELMO1 and ELMO2, catalyzes the exchange of GDP for GTP on Rac1, thereby activating downstream signaling. Upstream regulators such as integrins, receptor tyrosine kinases, chemokine receptors, and growth factors stimulate the DOCK5-ELMO complex. Activated Rac1 promotes actin polymerization via effectors including PAK kinases, the WAVE regulatory complex, and the Arp2/3 complex, while also engaging the JNK and p38 MAP kinase pathways. Interacting proteins like RhoG and Crk modulate DOCK5-ELMO assembly and activity, linking this module to other Rho-family GTPase networks.
Disrupting DOCK5 in HeLa cells impairs Rac-dependent lamellipodia formation, cell migration, and focal adhesion dynamics. Given the cervical adenocarcinoma origin of HeLa, this knockout model is particularly relevant for studying cancer invasion and metastasis. Moreover, DOCK5’s known role in osteoclast differentiation and bone resorption makes this system valuable for dissecting conserved Rac signaling modules that coordinate actin reorganization and adhesion turnover across cell types. The epithelial background also enables examination of DOCK5 function within cell-cell junctions and polarized migration.
This polyclonal knockout population supports a variety of downstream applications, including Transwell migration and invasion assays, Rac-GTP pull-downs, phospho-signaling analyses, and adhesion assays. Immunofluorescence microscopy can visualize changes in actin cytoskeletal structures and focal adhesions. For osteoclast-related research, co-culture or conditioned medium experiments can be performed. The cells are also suitable for genetic rescue experiments by re-expressing DOCK5 variants and for validating pharmacological inhibitors targeting the DOCK5-ELMO pathway. For further technical details, please contact Ascent Research.
