The DST Knockout MES-OV Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout population targeting the DST gene in the MES-OV human ovarian clear cell carcinoma cell line. This product provides a genetically heterogeneous pool of cells with disrupted dystonin expression, facilitating loss-of-function studies without clonal selection artifacts. The polyclonal format preserves population-level diversity while eliminating functional dystonin protein, enabling robust assessment of cytoskeletal and adhesion-related phenotypes.
MES-OV cells originate from a human ovarian clear cell carcinoma, representing a neoplastic epithelial model with relevance to ovarian cancer biology. These cells retain morphological and signaling characteristics of the tumor epithelium, including adhesion-dependent growth and responsiveness to mechanical cues. Their use as a host for DST knockout allows investigation of cytoskeletal linker proteins in a pathologically relevant context, particularly given the association between ovarian cancer metastasis and altered cell-ECM interactions.
Dystonin, encoded by DST, functions as a megadalton cytoskeletal linker coordinating actin filaments, microtubules, and intermediate filaments. It participates in cell-matrix adhesion and focal adhesion dynamics by interacting with integrin ??4, plectin, and BPAG1e. Upstream, DST expression is induced by mechanical stretch, TGF-?? signaling, and integrin clustering. Downstream, dystonin organizes actin filament networks, promotes focal adhesion maturation, and modulates mechanotransduction through YAP/TAZ. Pathway components include ITGB1, FAK, SRC, RAC1, RHOA, and YAP1, positioning dystonin at the intersection of structural integrity and signal transduction.
Disruption of DST in MES-OV cells compromises the mechanical resilience of the cytoskeleton, leading to impaired cell-matrix adhesion and altered force transmission. This model recapitulates the cytoskeletal disorganization observed during ovarian cancer cell dissemination and may reveal vulnerabilities in metastatic progression. Loss of dystonin attenuates mechanosensitive signaling through YAP/TAZ, potentially reducing invasive behavior and sensitizing cells to mechanical stress. Consequently, this knockout system serves as a platform to dissect how cytoskeletal crosslinking impacts ovarian carcinoma pathology.
Researchers can utilize these polyclonal knockout cells to examine cytoskeletal remodeling via immunofluorescence staining of actin, microtubules, and focal adhesions; quantify adhesion strength and dynamics; perform scratch-wound and transwell migration/invasion assays; and assess phospho-signaling events involving FAK and SRC. Mechanical stress experiments, such as substrate stiffness variation or stretching, further elucidate dystonin-dependent mechanoresponses. These applications support drug discovery efforts targeting focal adhesion and integrin pathways in ovarian cancer. For additional information or ordering, please contact Ascent Research.
