The KIF3A Knockout NCI-H1975 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population engineered for targeted disruption of the KIF3A gene in the NCI-H1975 lung adenocarcinoma epithelial cell line. This polyclonal pool provides a heterogeneous loss-of-function model, enabling researchers to study the collective effects of KIF3A gene disruption without single-cell clonal selection, thereby preserving the inherent genetic variability of the parent cell line. The use of CRISPR/Cas9-mediated gene disruption generates a versatile tool for dissecting KIF3A-dependent cellular processes in a cancer-relevant background.
NCI-H1975 is a well-characterized non-small cell lung cancer (NSCLC) cell line originally derived from the pleural effusion of a non-smoker female patient with lung adenocarcinoma. This line harbors an activating EGFR mutation (L858R), making it a widely adopted model for investigating EGFR-driven oncogenic signaling and mechanisms of acquired resistance to tyrosine kinase inhibitors. Its epithelial origin and maintenance of key adenocarcinoma features render it particularly suitable for studying tumor cell biology, including proliferation, migration, and drug response, in the context of aberrant pathway activation.
KIF3A encodes a motor subunit of the heterotrimeric kinesin-2 complex, which is essential for anterograde intraflagellar transport (IFT) and the assembly and maintenance of primary cilia. As a core component of the IFT machinery, KIF3A interacts with KIF3B, KAP3, IFT88, and IFT20 to mediate trafficking of cargo along ciliary microtubules. Its activity is regulated by upstream signals such as Sonic hedgehog (Shh) and the transcription factor FoxJ1. KIF3A-dependent ciliary trafficking is critical for the transduction of the Hedgehog pathway, where it facilitates the processing and activation of GLI transcription factors downstream of Patched1 and Smoothened. Additionally, KIF3A influences the Wnt signaling pathway by modulating the stability and nuclear localization of ??-catenin, thereby affecting the expression of targets like Cyclin D1. Disruption of KIF3A thus impairs primary cilia formation, leading to attenuated Hedgehog and Wnt signaling cascades and consequent alterations in cell cycle progression and differentiation.
In the NCI-H1975 lung adenocarcinoma background, KIF3A knockout offers a powerful model to explore the crosstalk between primary cilia and oncogenic signaling networks. The loss of KIF3A-dependent ciliary functions in these EGFR-mutant cells can be used to probe how Hedgehog and Wnt pathway modulation impacts malignant phenotypes such as unchecked proliferation, migratory capacity, and resistance to targeted therapies. By combining the KIF3A disruption with the existing EGFR mutation context, researchers can interrogate the synergistic or compensatory mechanisms that drive NSCLC progression and therapeutic escape, thereby uncovering potential vulnerabilities in cilia-dependent signaling hubs.
This polyclonal knockout product is suitable for a broad range of experimental applications, including the study of primary cilia biology, Hedgehog signaling in cancer, drug resistance mechanisms, and ciliopathy disease modeling. Representative downstream assays include Western blotting and RT-qPCR to verify target gene depletion, immunofluorescence staining for ciliary markers (acetylated tubulin, ARL13B) to assess ciliogenesis impairment, Hedgehog luciferase reporter assays to quantify pathway activity, and functional assays such as cell viability, migration, and invasion studies. For detailed product information and ordering, please contact Ascent Research.
