The DOCK7 Knockout HT29 Polyclonal Cells consist of a CRISPR/Cas9-edited polyclonal cell population harboring targeted disruption of the DOCK7 gene in the HT29 human colorectal adenocarcinoma background. This polyclonal knockout model provides a heterogeneous loss-of-function system suitable for studying DOCK7-dependent signaling without clonal selection artifacts, enabling robust analysis of gene function in a physiologically relevant epithelial context.
HT29 is a widely employed human colorectal adenocarcinoma cell line exhibiting epithelial morphology and retaining key features of intestinal epithelial cells. Derived from a primary tumor, HT29 cells serve as a well-characterized model for investigating colorectal cancer biology, including proliferation, differentiation, and metastatic behavior. Their epithelial nature makes them particularly useful for examining cytoskeletal dynamics and cell migration mechanisms, processes intimately linked to DOCK7 activity.
DOCK7 functions as a guanine nucleotide exchange factor (GEF) for the small GTPases Rac1 and Cdc42, catalyzing the exchange of GDP for GTP to activate these molecular switches. Activated Rac1 and Cdc42 regulate actin cytoskeleton reorganization through downstream effectors such as PAK, LIMK, and cofilin, governing lamellipodia and filopodia formation and cell migration. DOCK7 activity is modulated by upstream signals including EGFR, Netrin-1/DCC, and integrin engagement, and it operates in complex with ELMO1 and ELMO2, which are essential for its GEF function. Additionally, DOCK7 links to MAPK signaling cascades, with Rac1/Cdc42 activating JNK and p38 pathways, thus coordinating cytoskeletal dynamics with transcriptional responses.
In the context of colorectal adenocarcinoma, DOCK7-mediated activation of Rac1 and Cdc42 is implicated in tumor cell migration and invasion, key steps in cancer metastasis. Disruption of DOCK7 in HT29 cells provides a loss-of-function model to dissect the specific contributions of this GEF to actin-driven motility and signal transduction in an epithelial cancer setting. Studying these polyclonal knockout cells can reveal how DOCK7 influences the balance between stationary epithelial organization and migratory mesenchymal behavior, shedding light on metastatic progression mechanisms.
This knockout product is ideal for a range of functional assays, including wound healing migration assays and invasion assays to assess cell motility, Rho GTPase activation assays to measure Rac1/Cdc42 activity, and western blotting for phospho-JNK and phospho-p38 to monitor MAPK signaling. Immunofluorescence staining for F-actin and co-immunoprecipitation studies with ELMO proteins can further characterize cytoskeletal and complex formation changes. Typical research applications span cancer cell migration, metastasis, cytoskeletal dynamics, neuronal development, and cell signaling. For additional information or technical support, please contact Ascent Research.
