DNAJC6 Knockout A-549 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population derived from the A-549 lung adenocarcinoma cell line. This model introduces targeted disruption of the DNAJC6 gene, which encodes the co-chaperone auxilin, generating a loss-of-function system for studying clathrin-mediated endocytosis. The polyclonal format encompasses a heterogeneous collection of edited alleles, minimizing clonal selection bias and providing a robust platform for functional analysis. This knockout model enables dissection of auxilin??s role in vesicle trafficking without the constraints of monoclonal variation.
The parental A-549 cell line is an adherent epithelial model derived from a lung adenocarcinoma of a 58-year-old male. Widely utilized in cancer biology and respiratory research, these cells provide a well-characterized context for investigating endocytic pathways, receptor signaling, and drug responses. Their human lung origin and epithelial morphology make them particularly suitable for studies of clathrin-dependent processes affecting proliferation, migration, and intracellular trafficking.
DNAJC6 encodes auxilin, a co-chaperone that recruits Hsc70 (HSPA8) to clathrin-coated vesicles, catalyzing ATP-dependent uncoating of clathrin triskelia and enabling vesicle recycling. Auxilin interacts with clathrin and the AP-2 complex, coupling heat shock stress and endocytic stimuli to clathrin coat disassembly. Its function is essential for clathrin-mediated endocytosis and endosomal sorting. Disruption of DNAJC6 impairs Hsc70 recruitment, causing accumulation of clathrin-coated structures and altered trafficking of cargoes such as transferrin and EGFR. This also dysregulates dynamin (DNM2)-mediated scission and endocytic recycling, impacting membrane homeostasis and signal transduction.
In A-549 cells, DNAJC6 knockout allows investigation of how clathrin coat dynamics influence lung adenocarcinoma cell behavior. Loss of auxilin perturbed receptor internalization and recycling may alter proliferative and migratory signaling relevant to cancer progression. As A-549 cells are employed in drug delivery studies, this model can reveal how endocytic defects affect nanoparticle uptake or chemotherapeutic internalization. Moreover, since DNAJC6 mutations are linked to Parkinson??s disease, this system provides a non-neuronal context to study shared endocytic mechanisms.
This polyclonal knockout population supports diverse assays, including Western blotting for clathrin and endocytic markers, transferrin uptake assays, and EGFR internalization kinetics. Immunofluorescence visualization of clathrin puncta, coupled with RT-qPCR or RNA-seq profiling, can map transcriptional changes. Functional studies such as proliferation and migration assays further clarify endocytosis??s role in lung cancer biology. For additional technical details, please contact Ascent Research.
