The IVNS1ABP Knockout A-549 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population targeting the IVNS1ABP gene in human A-549 cells. This polyclonal population provides a heterogeneous loss-of-function model for studying IVNS1ABP, avoiding clonal bias. CRISPR/Cas9-mediated gene disruption enables loss-of-function studies by disrupting IVNS1ABP protein expression, facilitating functional analyses.
The A-549 cell line is a human lung adenocarcinoma model derived from a 58-year-old Caucasian male, displaying adherent epithelial morphology and type II alveolar characteristics. It serves as a standard platform for lung cancer and viral infection research, offering a relevant background for IVNS1ABP studies.
IVNS1ABP encodes an interferon-inducible influenza virus NS1A-binding protein that integrates host antiviral defense with actin cytoskeleton reorganization and protein ubiquitination. Transcription is activated by type I interferons (IFN-??/??) via the IFNAR-JAK1/TYK2-STAT1/STAT2-IRF9 signaling cascade. IVNS1ABP directly interacts with the influenza A virus NS1 protein, potentially modulating viral replication, and forms complexes with Flightless I (FLII) and actin (ACTB) to regulate filopodia formation, cell migration, and morphology. Its BTB domain suggests a role as a substrate adaptor for the Cullin-3 (CUL3)-RBX1 E3 ubiquitin ligase, targeting proteins for proteasomal degradation. Downstream, IVNS1ABP influences pre-mRNA splicing, antiviral ISG expression, and FLII-mediated transcriptional activity, positioning it as a critical node linking innate immunity and cellular architecture.
In A-549 lung adenocarcinoma cells, IVNS1ABP knockout enables dissection of its roles in interferon-mediated antiviral responses and actin-dependent processes relevant to cancer metastasis. The model may reveal how loss of IVNS1ABP disrupts Hedgehog signaling or ubiquitin-proteasome function, offering insights into viral pathogenesis and lung cancer biology.
This polyclonal knockout population is well-suited for a variety of research applications. Validating IVNS1ABP disruption through western blotting and RT-qPCR can be combined with co-immunoprecipitation to assess interactions with NS1 or FLII, and immunofluorescence to visualize actin cytoskeleton changes. Functional assays include influenza virus replication, interferon-stimulated gene (ISG) induction, and cell migration or proliferation assays to evaluate phenotypic outcomes. These applications make the cells ideal for studying viral-host interactions, interferon signaling, actin dynamics, and lung adenocarcinoma biology. For further information or technical assistance, please contact Ascent Research.
