ARE-Luc/EF1α-mCherry Reporter Cell Line - A549

ARE-Luc/EF1α-mCherry Reporter Cell Line - A549 is a dual-reporter human lung adenocarcinoma cell line engineered from A549 cells. It stably expresses firefly luciferase under the control of antioxidant response element (ARE)-responsive transcriptional elements, allowing sensitive monitoring of NRF2-mediated antioxidant and cytoprotective signaling. In parallel, the cells constitutively express mCherry driven by the human EF1α promoter. The red fluorescent marker provides a convenient indicator of cell number, viability, transduction stability, and assay normalization. A549 cells are widely used in respiratory biology, toxicology, oncology, and oxidative-stress research because they retain epithelial characteristics and show a functional NRF2/KEAP1-associated stress-response pathway. The combined luminescent and fluorescent format enables robust, scalable measurements in live-cell and endpoint assays.

This reporter cell line is particularly suitable for screening and profiling compounds that activate or inhibit the NRF2–ARE pathway. It can be used to evaluate electrophilic chemicals, natural products, antioxidant candidates, environmental pollutants, cigarette-smoke components, particulate matter, and drug candidates for their ability to induce cellular defense genes. Luciferase activity offers a sensitive quantitative readout of ARE transcriptional activation, while EF1α-mCherry fluorescence can help distinguish pathway-specific effects from changes caused by reduced cell density, cytotoxicity, or nonspecific assay interference. The cells are compatible with plate-based luminometry, fluorescence imaging, high-content analysis, and high-throughput screening workflows. They are also useful for mechanistic studies involving oxidative stress, inflammation, ferroptosis, mitochondrial dysfunction, and chemoresistance.