The IGSF8 Knouckout A-549 Polyclonal Cells product provides a CRISPR/Cas9-edited polyclonal knockout cell population targeting the IGSF8 gene in the human A-549 lung adenocarcinoma cell line. This model is generated through CRISPR/Cas9-mediated disruption of the endogenous IGSF8 locus, resulting in a heterogeneous pool of cells carrying loss-of-function alleles. The polyclonal format retains genetic diversity and minimizes clonal selection artifacts, offering a robust system for functional genomics studies.
A-549 is an epithelial cell line originally established from the lung adenocarcinoma tissue of a 58-year-old male. It is a widely utilized model for human lung adenocarcinoma, valued for its capacity to recapitulate key features of tumor cell biology, including adhesion, migration, and drug responsiveness. These cells are extensively employed in cancer research for investigating signaling pathways, metastatic mechanisms, and therapeutic interventions.
IGSF8, a member of the immunoglobulin superfamily, functions as a regulator of cell adhesion and migration through its incorporation into tetraspanin-enriched microdomains. This protein physically associates with tetraspanins CD81 and CD9, and with integrins ??3??1 and ??4??1, bridging extracellular matrix interactions to intracellular signaling cascades. Mechanistically, IGSF8 engagement leads to activation of focal adhesion kinase (FAK) and Src kinase, which in turn modulate Rho GTPases including RhoA and Rac1, thereby reorganizing the actin cytoskeleton and controlling cell motility. Additionally, IGSF8 expression is upregulated by inflammatory cytokines such as TNF-?? and IL-1??, as well as by epidermal growth factor (EGF), linking inflammatory and growth factor signals to adhesion dynamics. In immune cells, IGSF8 contributes to immune synapse formation and T cell activation, highlighting its dual role in both cancer and immune biology.
In the context of A-549 cells, IGSF8 plays a pivotal role in sustaining the invasive and metastatic capacity characteristic of lung adenocarcinoma. Its knockout disrupts the tetraspanin web, attenuating integrin-mediated signaling and leading to impaired cell adhesion, migration, and invasion. Consequently, this polyclonal knockout model enables detailed examination of the molecular underpinnings of lung cancer progression, particularly the transition from a stationary epithelial state to a motile, invasive phenotype. It also facilitates the study of cross-talk between adhesion receptors and immune regulatory pathways within the tumor microenvironment.
Researchers can employ this IGSF8 knockout population in a broad range of experimental settings, including Boyden chamber invasion assays, wound healing migration assays, and cell adhesion analyses. The model is also suited for protein interaction studies via co-immunoprecipitation and immunofluorescence, as well as for signaling analysis by Western blot and flow cytometry. Applications encompass tetraspanin web research, validation of anti-metastatic drug targets, and exploration of immune synapse modulation. The absence of IGSF8 provides a tool for dissecting molecular networks driving tumor dissemination and screening motility-targeting compounds. For additional technical specifications and inquiries, please contact Ascent Research.
