The ACTA1 Knockout 769-P Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the 769-P human cell line, designed to disrupt the ACTA1 gene encoding alpha-skeletal muscle actin. This heterogeneous pool of edited cells enables loss-of-function studies without clonal selection, maintaining population-level diversity. The product serves as a versatile tool for analyzing actin isoform contributions in both muscle-related and cancer contexts.
The 769-P host cell line is a human renal cell adenocarcinoma-derived epithelial line from primary clear cell carcinoma. Exhibiting an adherent morphology, it is a well-established kidney cancer model, widely used to investigate malignant epithelial cell behaviors such as migration, invasion, and cytoskeletal remodeling. Its transformed phenotype provides a relevant background for studying signaling pathways in renal cell carcinoma and for evaluating sarcomeric actin function in non-muscle cells.
ACTA1 encodes alpha-skeletal muscle actin, a sarcomeric thin filament component essential for contraction. Although canonical in muscle, ACTA1 expression in non-muscle cells is subject to regulation by MYOD1, MYOG, MEF2C, SRF, and TGFB1. Its protein product interacts with tropomyosin, the troponin complex, alpha-actinin, myosin, cofilin, profilin, ARP2/3, and vinculin. Signaling through RhoA-ROCK-LIMK-cofilin and integrin-FAK-SRC axes governs actin polymerization, focal adhesion dynamics, and mechanical force transmission downstream of ACTA1.
In the 769-P renal carcinoma background, ACTA1 knockout disrupts any alpha-skeletal muscle actin present, potentially altering actin cytoskeleton dynamics and cell motility. This model facilitates exploration of actin isoform compensation and cytoskeletal remodeling in cancer. Impaired force generation and focal adhesion turnover may occur, making it valuable for dissecting contributions of sarcomeric actin to epithelial tumor progression and for identifying vulnerabilities in kidney cancer cells.
Applications encompass Western blotting and immunofluorescence for ACTA1 and actin network analysis, wound healing and transwell invasion assays for migration/invasion, Rho GTPase activation assays, qPCR for actin isoforms, co-immunoprecipitation, and live-cell imaging. This polyclonal knockout population supports functional analysis of actin isoforms, studies of cytoskeletal dynamics, cancer migration and invasion research, muscle disease modeling, and drug screening for actin-targeting compounds. For further details, contact Ascent Research.
