Related Experiment Video
Updated: Jul 10, 2026
10:13
A Multiplexed Luciferase-based Screening Platform for Interrogating Cancer-associated Signal Transduction in Cultured Cells
Published on: July 3, 2013
Spectral-resolved gene technology for multiplexed bioluminescence and high-content screening
Elisa Michelini1, Luca Cevenini, Laura Mezzanotte
1Department of Pharmaceutical Sciences, University of Bologna, and Center for Applied Biomedical Research (CRBA), S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy.
Analytical Chemistry
|November 23, 2007
Summary
Researchers developed a novel triple-color bioluminescence assay for real-time monitoring of cellular processes. This advanced reporter system enables simultaneous tracking of multiple targets in living cells, improving screening efficiency.
Area of Science:
- Biochemistry and Molecular Biology
- Cellular Assays
- Reporter Gene Technology
Background:
- Bioluminescent proteins are crucial for monitoring cellular activities, but limitations exist in multiplexing capabilities.
- New luciferases and engineered mutants offer expanded spectral options for simultaneous detection.
- Existing reporter systems can suffer from signal interference, limiting their application.
Purpose of the Study:
- To develop a novel triple-color mammalian reporter system for simultaneous monitoring of multiple cellular targets.
- To validate the system's ability to track bile acid biosynthesis pathways in real-time.
- To establish a robust assay for high-content analysis and screening.
Main Methods:
- Cloning and mutagenesis of bioluminescent proteins, including a novel luciferase from Luciola italica.
- In vitro and cell-based assays using purified and expressed luciferases (Photinus pyralis, L. italica mutant, Gaussia princeps luciferase).
- Development of a mammalian triple-color reporter model to monitor cholesterol 7-alpha hydroxylase and sterol 27-hydroxylase, with Gaussia princeps luciferase as a vitality control.
Main Results:
- A triple-color reporter system was successfully established in mammalian cells, combining secreted and non-secreted luciferases with distinct substrates.
- The system demonstrated accurate, dose-dependent monitoring of bile acid biosynthesis pathways upon chenodeoxycholic acid treatment.
- The assay showed minimal interference between bioluminescent signals, allowing for dynamic evaluation of metabolic activity.
Conclusions:
- This study presents the first triple-color mammalian reporter assay combining secreted and non-secreted luciferases, overcoming signal interference issues.
- The developed system is suitable for high-content analysis of gene transcription in living cells, enhancing screening throughput and cost-effectiveness.
- This approach offers a powerful tool for dynamic evaluation of metabolic pathways and drug screening.
