The HTT Knockout A-549 Polyclonal Cells provide a CRISPR/Cas9-edited polyclonal knockout population targeting the huntingtin gene (HTT) in the human A-549 lung adenocarcinoma epithelial cell line. This product comprises a heterogeneous pool of cells with CRISPR/Cas9-mediated disruptions in HTT, generating a loss-of-function model. The polyclonal format avoids single-cell clone artifacts and preserves genetic diversity, offering a robust system for investigating HTT-dependent processes.
The A-549 cell line, derived from a 58-year-old male with lung adenocarcinoma, displays alveolar Type II epithelial characteristics. Widely employed in cancer and respiratory research, A-549 cells provide a well-characterized platform for studying tumor biology, drug responses, and signaling pathways. Their adherent growth and extensive genomic annotation facilitate gene editing and downstream functional assays, making them an ideal host for interrogating HTT function in a non-neuronal context.
Huntingtin is a multifaceted scaffold protein that coordinates vesicular trafficking, endocytosis, autophagy, and transcriptional regulation. It is regulated by caspase-3, calpain, Akt, and IKK, and interacts with partners such as HAP1, HIP1, HIP14, PACSIN1, Grb2, SH3GLB1, clathrin, and dynamin. Downstream, huntingtin facilitates BDNF secretion, axonal transport, and autophagosome formation. Key associated pathways include BDNF/TrkB signaling, PI3K/Akt, and calcium signaling via IP3 receptors. Disruption of HTT abolishes these scaffold functions, compromising intracellular trafficking, autophagy, and transcriptional programs in A-549 cells.
In the A-549 lung adenocarcinoma model, HTT knockout provides a unique tool to investigate huntingtin’s non-neuronal roles. Autophagy and apoptosis are critical for tumor cell fitness, and huntingtin’s involvement in these processes suggests that its loss may sensitize cells to therapeutic agents or alter proliferative capacity. Interactors like Grb2 link huntingtin to growth factor signaling, highlighting potential impacts on oncogenic pathways. This system enables dissection of how HTT deficiency influences A-549 migration, invasion, and stress responses, offering insights into huntingtin’s contributions to lung cancer pathology.
Researchers can employ these polyclonal knockout cells to study huntingtin function in autophagy, endocytosis, and transcriptional regulation through Western blotting for LC3 and p62, immunofluorescence, and co-immunoprecipitation of HTT interactors. Applications include drug screening for Huntington’s disease modifiers, proliferation and migration assays, RNA-seq for transcriptional changes, and apoptosis detection by Annexin V staining. This model also supports investigation of HTT in lung adenocarcinoma progression and drug sensitivity. For additional details or assay support, please contact Ascent Research.
