This product consists of a CRISPR/Cas9-edited polyclonal knockout cell population targeting the BRK1 gene in the HeLa background. The polyclonal pool comprises a heterogeneous mix of edited cells, providing a robust loss-of-function model for studying BRK1-dependent processes without the limitations of single-cell clonal selection. This format is particularly suited for experiments where population-wide gene disruption is desired, enabling the investigation of collective cellular behaviors and pathway responses in a genetically diverse context.
The parental HeLa cell line is an HPV18-positive cervical adenocarcinoma epithelial line with well-characterized inactivation of the p53 and Rb tumor suppressor pathways. These immortalized cells are a mainstay in cancer research due to their robust proliferation, ease of culture, and broad relevance to epithelial cell biology. The HeLa model provides a physiologically relevant platform for examining cytoskeletal dynamics, cell motility, and invasion mechanisms, making it an ideal host for BRK1 knockout studies.
BRK1 (also known as HSPC300) encodes a core subunit of the WAVE regulatory complex, which is indispensable for coupling Rac1 GTPase signals to Arp2/3-mediated actin nucleation. Within this complex, BRK1 interacts with WAVE1/2/3, ABI1/2, CYFIP1/2, and NCKAP1 to maintain complex stability and function. Upstream, Rac1 and the NCK adaptor relay signals from integrin engagement to the WAVE complex, while downstream, the Arp2/3 complex drives actin polymerization, generating branched actin networks that power lamellipodial protrusions. BRK1 is thus a linchpin in the Rac1?CWAVE?CArp2/3 signaling cascade, with its disruption fundamentally ablating actin-based membrane extension.
In the HeLa cell context, CRISPR/Cas9-mediated BRK1 disruption abrogates the formation of lamellipodia and severely compromises cell migration and invasion, recapitulating the gene??s essential role in actin-driven cell motility. This phenotype directly models key aspects of metastatic dissemination, where BRK1-dependent actin remodeling is frequently hijacked. Additionally, because HeLa cells retain functional Rac1 and integrin pathways, the knockout provides a clean system to dissect the specific contribution of the WAVE complex to signal transduction without confounding mutations in upstream components. Researchers can thus employ this model to distinguish BRK1-dependent from BRK1-independent migratory mechanisms.
This polyclonal BRK1 knockout pool is ideally suited for a range of applications, including detailed biochemical dissection of WAVE complex integrity via co-immunoprecipitation, quantitative assessment of migration and invasion using scratch wound healing and Transwell assays, and high-resolution imaging of F-actin and lamellipodial structures by immunofluorescence. Downstream signaling readouts, such as Rac1 activity via G-LISA, further enable pathway-centric analyses. These cells support studies in cancer metastasis, developmental cell motility, and cytoskeletal regulation. For additional technical details, pricing, or customization options, please contact Ascent Research.
