The HS1BP3 Knockout A-549 Polyclonal Cells product is a CRISPR/Cas9-edited polyclonal knockout cell population derived from the A-549 human lung epithelial cell line. This product features targeted disruption of the HS1BP3 gene, generating a loss-of-function model for studying HS1BP3-mediated cellular processes. The polyclonal nature preserves the heterogeneous editing outcomes typical of CRISPR/Cas9 technology, providing a robust platform for functional studies without the need for single-cell cloning. It is designed for researchers investigating actin cytoskeleton regulation, endocytosis, and associated signaling pathways.
The A-549 cell line was originally established from a 58-year-old Caucasian male with lung carcinoma. These cells exhibit an adherent epithelial morphology and express markers characteristic of alveolar basal epithelial cells. As a widely utilized model in respiratory disease research, A-549 cells have been instrumental in studying lung cancer biology, cellular adhesion, and metastatic dissemination. Their tumorigenic background makes them particularly relevant for exploring the molecular mechanisms that drive epithelial-to-mesenchymal transition and invasive behavior.
HS1BP3 (HCLS1-binding protein 3) functions as an essential adaptor protein that bridges kinase signaling cascades to the actin cytoskeleton and endocytic machinery. It is phosphorylated and regulated by SRC family kinases in response to epidermal growth factor receptor (EGFR) activation and T-cell receptor (TCR) stimulation. HS1BP3 directly interacts with HCLS1 (HS1), HAX1, and cortactin, orchestrating the recruitment and activation of the WAVE2 complex and the Arp2/3 complex. This leads to localized actin polymerization at sites of focal adhesion turnover and dynamic membrane remodeling. Additionally, HS1BP3 integrates signals from Rho GTPases to coordinate endocytosis and vesicular trafficking, thereby modulating cell adhesion, spreading, and migration. The convergence of these pathways positions HS1BP3 as a key node in the regulation of cytoskeletal plasticity and membrane trafficking.
In the context of A-549 lung carcinoma cells, HS1BP3 contributes to pro-migratory and pro-invasive phenotypes through its control of actin dynamics and focal adhesion disassembly. Disruption of HS1BP3 in this model enables detailed dissection of signaling networks that promote cancer metastasis. Moreover, HS1BP3 has been linked to Parkinson’s disease via its roles in endocytosis and intracellular trafficking??processes that are vital for neuronal health but also conserved in epithelial cells. Therefore, this knockout model is a valuable tool not only for oncology research but also for exploring fundamental mechanisms of vesicle transport and cytoskeletal organization that may inform neurodegenerative disease studies.
This polyclonal knockout pool is suitable for a broad range of experimental techniques, including western blotting, immunofluorescence, and RT-qPCR to confirm gene disruption and downstream changes. Co-immunoprecipitation assays can be employed to map HS1BP3 interaction networks, while functional migration and invasion assays allow quantitative assessment of metastatic potential. Endocytosis assays further enable trafficking studies. This product supports cancer cell biology, neurobiology, and signal transduction research. For more information, please contact Ascent Research.
