Related Experiment Video
Updated: Mar 2, 2026
11:43
A Screenable In Vivo Assay for Mitochondrial Modulators Using Transgenic Bioluminescent Caenorhabditis elegans
Published on: October 16, 2015
10.7K
Inhibiting Firefly Bioluminescence by Chalcones
Huateng Zhang1, Jing Su2,3, Yuxin Lin1
1Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Shandong University , Jinan, Shandong 250012, China.
Analytical Chemistry
|May 12, 2017
Summary
New chalcone compounds effectively inhibit firefly luciferase (Fluc), a bioluminescent reporter crucial for drug discovery. This discovery helps mitigate false positives in high-throughput screening and enhances bioluminescence applications.
Area of Science:
- Medicinal Chemistry
- Biochemistry
- Drug Discovery
Background:
- Chalcones are key scaffolds in drug discovery with diverse biological activities.
- Firefly luciferase (Fluc) is a widely used bioluminescent reporter in life sciences and high-throughput screening (HTS).
- HTS compounds can directly inhibit Fluc, leading to inaccurate results (false positives).
Purpose of the Study:
- To discover and characterize novel chalcone derivatives as potent inhibitors of firefly luciferase.
- To investigate the inhibition mechanism of the most effective chalcone compound.
- To assess the utility of these inhibitors in improving the reliability of bioluminescence assays.
Main Methods:
- Synthesis and in vitro evaluation of chalcone derivatives for Fluc inhibition.
- In vivo assessment of compound efficacy in transgenic mouse models.
- Enzymatic kinetics studies and cocrystal structure determination.
- Evaluation in simulated dual-luciferase reporter assays.
Main Results:
- A series of chalcone compounds were identified as potent Fluc inhibitors in vitro and in vivo.
- Compound 3i demonstrated significant systemic inhibition in transgenic mice.
- Enzymatic studies revealed compound 3i acts as a competitive inhibitor for aminoluciferin and noncompetitive for ATP.
- Compound 3i showed high selectivity and potential as a quenching agent in dual-luciferase assays.
Conclusions:
- Chalcone derivatives represent a promising class of Fluc inhibitors.
- Understanding Fluc inhibition is crucial for accurate HTS and bioluminescence research.
- These findings can improve the reliability of bioluminescence assays and expand their applications.
