The KLC4 Knouckout A-549 Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population derived from the A-549 human lung adenocarcinoma epithelial line, engineered for loss-of-function studies of the KLC4 gene. This polyclonal knockout model offers a genetically heterogeneous pool of cells carrying diverse disruptions within the target locus, providing a robust system for investigating KLC4-dependent processes without the clonal artifacts associated with isolated cell lines. The population is suitable for assays where bulk knockout effects are analyzed, such as western blotting, metabolic profiling, or cell migration screens, and serves as a versatile tool for functional genomics in cancer research.
The host A-549 cell line was originally established from a 58-year-old male with lung carcinoma and displays adherent epithelial morphology. As a widely accepted model for lung adenocarcinoma, A-549 cells recapitulate key features of non-small cell lung cancer, including altered signaling networks and metabolic dependencies. Their ease of culture and well-characterized genomic landscape make them a preferred platform for studying tumor cell biology, drug responses, and intracellular trafficking pathways. The A-549 background thus provides a clinically relevant context for examining the roles of microtubule motor proteins in cancer.
KLC4 encodes a light chain subunit of the kinesin-1 motor complex, where it functions as a cargo adaptor that bridges the kinesin heavy chain KIF5B to organelles such as mitochondria via the MIRO and TRAK (Milton) adaptor proteins. This interaction enables ATP-dependent anterograde transport along microtubules, regulating mitochondrial distribution, energy metabolism, and vesicle trafficking. Upstream regulation of KLC4 involves phosphorylation by AMPK and JNK kinases, linking nutrient and stress signals to motor activity. Downstream, KLC4 influences microtubule dynamics and cell migration, positioning it at the intersection of cytoskeletal organization and intracellular logistics.
In the A-549 lung adenocarcinoma model, disruption of KLC4 allows dissection of kinesin-1-dependent transport mechanisms that may underpin cancer cell motility and proliferation. Altered mitochondrial positioning due to KLC4 loss can affect local ATP supply, metabolic flux, and apoptotic sensitivity, processes often dysregulated in tumors. This knockout model thus offers a unique opportunity to investigate how impaired organelle trafficking contributes to malignant phenotypes, and may reveal vulnerabilities exploitable for therapeutic intervention in lung cancer and other malignancies where KLC4 is implicated.
Researchers can employ this polyclonal knockout population for a broad range of experimental applications, including live-cell imaging of mitochondrial and vesicle trafficking, co-immunoprecipitation of kinesin complexes, and metabolic flux analysis using Seahorse assays. It is equally suited for cell migration and viability assays, as well as high-content screening to identify modulators of microtubule-based transport. Transcript and protein-level validation can be performed via RT-qPCR and western blotting, while immunofluorescence microscopy enables spatial analysis of organelle distribution. For technical inquiries or custom requests, please contact Ascent Research.
