The ARPC5 Knockout A-549 Polyclonal Cells product provides a genetically disrupted population of A-549 cells in which the ARPC5 gene has been targeted using CRISPR/Cas9-mediated gene disruption. This knockout model is supplied as a polyclonal pool, representing a heterogeneous population of edited alleles without clonal selection. The product enables loss-of-function studies in a lung adenocarcinoma background, offering a versatile tool for investigating the roles of ARPC5 and the Arp2/3 complex in actin cytoskeleton dynamics and related cellular processes.
The host cell line, A-549, is a well-characterized human lung adenocarcinoma epithelial cell line originally derived from a 58-year-old male patient. These cells are widely employed as an in vitro model for lung alveolar epithelium and are extensively used in cancer research to study tumor cell biology, including proliferation, migration, invasion, and drug response. The A-549 line retains key features of epithelial cells and is particularly suited for examining the molecular underpinnings of non-small cell lung cancer (NSCLC) and metastatic progression.
ARPC5 (p16) is an essential subunit of the Arp2/3 complex, which nucleates branched actin filament networks crucial for lamellipodia formation, cell motility, and endocytosis. The Arp2/3 complex is activated by nucleation-promoting factors such as the WAVE complex (WASF1-3) and N-WASP, which are regulated downstream of Rho GTPases including Rac1 and Cdc42. ARPC5 integrates signals from growth factor receptors (e.g., EGFR) to coordinate actin polymerization. It interacts directly with other Arp2/3 subunits (ARPC1A, ARPC2, ARPC3, ARPC4, ACTR2, ACTR3) and with regulatory proteins like cortactin. Disruption of ARPC5 expression thus impairs the assembly of the Arp2/3 complex and downstream actin remodeling, affecting cellular processes that depend on branched actin networks.
In the A-549 lung adenocarcinoma context, knockout of ARPC5 disrupts lamellipodia-dependent migration and invasion, key contributors to metastatic dissemination. The Arp2/3 complex, via ARPC5, mediates the dynamic reorganization of the actin cytoskeleton in response to pro-migratory signals. Loss of ARPC5 in A-549 cells provides a physiologically relevant model to dissect the contribution of the Arp2/3 complex to cancer cell motility, endocytic trafficking, and adhesion dynamics, which are critical for tumor progression and metastasis.
This polyclonal knockout cell population is ideally suited for a range of functional assays, including wound healing and transwell invasion assays to quantify cell migration and invasion, immunofluorescence with phalloidin to visualize actin cytoskeleton alterations, live-cell imaging of actin dynamics, and endocytosis assays such as transferrin uptake. Additionally, these cells can be used for phospho-signaling analyses of Rho GTPase pathways and for drug sensitivity screening to identify compounds targeting cytoskeletal-driven metastatic behaviors. For further information or custom requests, please contact Ascent Research.
