The HDAC6 Knockout A-549 Polyclonal Cells product provides a CRISPR/Cas9-edited polyclonal population of A-549 human lung adenocarcinoma epithelial cells with targeted disruption of the HDAC6 gene. This loss-of-function model is generated without clonal isolation, yielding a heterogeneous knockout pool that enables robust analysis of gene function while reducing clone-specific biases. It is designed for researchers studying HDAC6-dependent pathways in cancer biology, stress responses, and drug sensitivity.
The A-549 cell line was originally derived from the lung adenocarcinoma of a 58-year-old Caucasian male and is a widely used model for human alveolar type II epithelium. These adherent epithelial cells maintain key characteristics of pulmonary adenocarcinomas, including the expression of epithelial markers and responses to oncogenic signals. Their relevance to lung cancer makes them an ideal host for investigating HDAC6-mediated processes such as cell migration, invasion, and therapeutic resistance.
HDAC6 functions as a cytoplasmic deacetylase that catalyzes the removal of acetyl groups from ??-tubulin, Hsp90, and cortactin, thereby modulating microtubule stability, chaperone activity, and actin remodeling. It is activated downstream of multiple signals, including EGF, TGF-??, TNF-??, and oxidative stress, and is transcriptionally regulated by NF-??B. Through its deacetylase activity, HDAC6 promotes microtubule dynamics and cell motility, while also recruiting polyubiquitylated misfolded proteins via p62/SQSTM1 to dynein motors for aggresome formation and autophagic degradation. Consequently, HDAC6 sits at the nexus of pathways governing cytoskeletal organization, protein homeostasis, and inflammation, interacting with components such as Hsp90, p62, and NF-??B.
In A-549 cells, HDAC6 contributes to lung adenocarcinoma progression by enhancing cell migration and conferring resistance to microtubule-stabilizing agents like paclitaxel. Disruption of HDAC6 expression in these cells leads to impaired aggresome clearance, hyperacetylated microtubules, and altered signaling through EGFR, Hsp90, and NF-??B pathways. This knockout model allows dissection of HDAC6??s role in oncogenic pathways and its interplay with stress responses under hypoxia or pro-inflammatory conditions typical of the tumor microenvironment. It also provides a system to evaluate the impact of HDAC6 loss on cellular adaptation to proteotoxic stress.
Researchers can employ this polyclonal knockout population to measure acetyl-??-tubulin levels by western blot or immunofluorescence, conduct cell migration assays, and assess drug sensitivity to paclitaxel or HDAC6-selective inhibitors. It is well-suited for co-immunoprecipitation studies of p62 and ubiquitin to probe aggresome-autophagy, as well as NF-??B luciferase reporter assays following stimulation with TNF-?? or IL-1??. Additional applications include investigating viral pathogenesis and modeling protein misfolding diseases in a lung cancer background. For further product information or technical support, please contact Ascent Research.
