The KIF3B Knouckout A-549 Polyclonal Cells product comprises a polyclonal population of A-549 human lung adenocarcinoma cells engineered by CRISPR/Cas9-mediated gene disruption to ablate expression of the KIF3B gene. This polyclonal knockout cell pool introduces a loss-of-function model of the kinesin-2 motor subunit KIF3B, enabling functional studies without clonal selection. The cells serve as a reproducible foundation for interrogating KIF3B-dependent processes in a lung cancer context.
The parental A-549 cell line, derived from a 58-year-old Caucasian male with non-small cell lung carcinoma, is a widely used model of human lung adenocarcinoma. These cells exhibit alveolar type II epithelial-like characteristics and are central to cancer biology, drug discovery, and signaling research. Their robust growth and well-characterized signaling networks make them a practical host for genetic knockout studies.
KIF3B encodes a plus-end-directed microtubule motor protein that functions as a subunit of the heterotrimeric kinesin-2 complex, alongside KIF3A and the adaptor KAP3 (KIFAP3). This motor complex is essential for anterograde intraflagellar transport (IFT) within primary cilia, a process critical for ciliogenesis and the transduction of Hedgehog and Wnt signals. KIF3B-mediated transport is activated by Sonic hedgehog (Shh) and Wnt ligands via Smoothened (SMO) and LRP5/6 co-receptors, ultimately regulating downstream effectors such as the GLI family of transcription factors (GLI1, GLI2) and beta-catenin. The motor interacts with IFT particles (including IFT88 and IFT57) to shuttle ciliary membrane receptors and signaling components. Disruption of KIF3B therefore impairs ciliary assembly and attenuates signal-dependent activation of these pathways, altering expression of Hedgehog target genes and beta-catenin-dependent transcription.
In the A-549 lung adenocarcinoma context, KIF3B knockout likely disrupts ciliary-dependent proliferation and differentiation cues. Given the roles of Hedgehog and Wnt signaling in non-small cell lung cancer (NSCLC) maintenance, loss of KIF3B may sensitize cells to SMO inhibitors or alter invasive properties. This polyclonal knockout model enables researchers to study how ciliary motor dysfunction impacts lung cancer cell behavior, potentially revealing vulnerabilities related to altered Gli1/beta-catenin activity and ciliogenesis gene expression.
These polyclonal KIF3B knockout cells support a variety of applications, including ciliary biology studies in lung cancer, investigation of Hedgehog/Wnt pathway crosstalk, ciliopathy modeling, motor protein trafficking analyses, and drug target validation in NSCLC. Representative experimental techniques include western blotting for KIF3B, Gli1, and beta-catenin; RT-qPCR for Hedgehog target genes; immunofluorescence for ciliary markers such as acetylated tubulin and ARL13B; flow cytometry for cell cycle; migration/invasion assays; and SMO inhibitor drug sensitivity testing. This versatile tool enables dissection of kinesin-2-dependent signaling in a clinically relevant adenocarcinoma background. For further details, please contact Ascent Research.
