The DST Knockout HeLa Polyclonal Cells product is a CRISPR/Cas9-edited polyclonal knockout cell population featuring targeted disruption of the DST gene in the HeLa cell background. This heterogeneous pool of gene-edited cells provides a versatile loss-of-function model for investigating the roles of dystonin, the large cytoskeletal linker protein encoded by DST, without requiring single-cell clonal isolation. The polyclonal format preserves genetic diversity while enabling robust functional studies of dystonin-dependent processes across a population of knockout cells.
The parental HeLa cell line is an epithelial carcinoma line originally derived from a cervical adenocarcinoma of Henrietta Lacks. These cells are human papillomavirus type 18 (HPV18)-positive and exhibit suppression of the tumor suppressor p53 through the action of the viral E6 oncoprotein. HeLa cells are widely employed as a model system in cancer biology, signal transduction research, and cytoskeletal studies, providing a well-characterized and experimentally tractable host background for gene knockout experiments.
Dystonin functions as a critical cytoskeletal integrator, coupling intermediate filaments to actin and microtubule networks. It anchors these filament systems to cell?Cextracellular matrix adhesions via direct interactions with integrin ??4 and plectin, stabilizing hemidesmosomal complexes. DST expression is regulated by EGFR ligands (EGF, TGF-??), TGF-??, p53, and AP-1 transcription factors. Downstream, dystonin modulates integrin ??4-dependent adhesion, actin stress fiber formation, FAK/Src signaling, and ERK1/2 phosphorylation, thereby controlling cell migration. Key interacting partners include keratins 5 and 14, actin, microtubule-associated proteins, and the scaffold Erbin. Dystonin thus participates in hemidesmosome assembly, integrin ??6??4?Claminin-332 connections, and focal adhesion dynamics.
Disruption of DST in HeLa cells abrogates dystonin-mediated cytoskeletal linkage, leading to compromised hemidesmosome integrity and impaired cell adhesion. The loss of this mechanical coupling alters cytoskeletal organization, resulting in enhanced cell migration and aberrant signal transduction ?C phenotypes that are particularly relevant in the context of cancer progression. HeLa cells, with their HPV-driven p53 inhibition and epithelial origin, provide a uniquely permissive environment for examining how dystonin deficiency affects adhesion-dependent signaling and motility, thereby offering insight into mechanisms of carcinoma invasion and metastasis.
This polyclonal DST knockout product is suitable for a broad range of research applications, including detailed study of cell adhesion and migration mechanisms, modeling of skin fragility disorders such as epidermolysis bullosa simplex with muscular dystrophy, and investigation of cancer cell invasion and metastasis. Representative experimental approaches include Western blotting for dystonin and adhesion proteins, immunofluorescence localization of keratin and integrin ??4, quantitative cell adhesion and Boyden chamber migration/invasion assays, analysis of FAK phosphorylation, co-immunoprecipitation of plakin interactions, and transcriptomic profiling by RNA-seq. For further information or custom inquiries, please contact Ascent Research.
