AP1-Luc/EF1α-mCherry Reporter Cell Line - SGC-7901

The SGC-7901 cell line, originally derived from human gastric adenocarcinoma, serves as a well-established model for investigating the molecular mechanisms of gastric cancer progression and therapeutic response. The AP1-Luc/EF1α-mCherry Reporter Cell Line - SGC-7901 is a stable, dual-reporter system engineered to monitor the Activator Protein-1 (AP-1) signaling pathway with high sensitivity. This cell line features a firefly luciferase gene under the transcriptional control of a synthetic promoter containing multiple AP-1 response elements (TRE). Additionally, it constitutively expresses the mCherry red fluorescent protein driven by the human EF1α promoter. This dual-labeling approach allows for the precise quantification of AP-1-mediated transcriptional activity while providing a built-in fluorescent marker for cell normalization, viability assessment, and stable population tracking.

This reporter cell line is an essential tool for researchers studying signaling cascades that converge on the AP-1 complex, including the MAPK/ERK, JNK, and p38 pathways. It is particularly effective for high-throughput screening of small-molecule inhibitors or biological agents designed to modulate stress-activated protein kinases and growth factor signaling in a gastric cancer context. Beyond drug discovery, the line is utilized to analyze the impact of environmental stressors, cytokines, and oncogenic mutations on cellular transformation and inflammatory responses. The integration of the EF1α-mCherry cassette ensures that changes in luciferase signal can be accurately corrected against cell density or transfection efficiency, significantly reducing experimental noise. Furthermore, stable mCherry expression enables longitudinal live-cell imaging and monitoring of tumor growth in xenograft models using both bioluminescent and fluorescent detection methods.