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Updated: Jan 21, 2026

A Functional Whole Blood Assay to Measure Viability of Mycobacteria, using Reporter-Gene Tagged BCG or M.Tb BCG lux/M.Tb lux
Published on: September 14, 2011
Regulatory Mechanisms of the LuxS/AI-2 System and Bacterial Resistance
Yang Wang1,2, Baobao Liu3,2, Daniel Grenier4
1College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China wangyocean@163.com lilili123168@163.com.
Abstract:
The quorum-sensing (QS) system is an intercellular cell-cell communication mechanism that controls the expression of genes involved in a variety of cellular processes and that plays critical roles in the adaption and survival of bacteria in their environment. The LuxS/AI-2 QS system, which uses AI-2 (autoinducer-2) as a signal molecule, has been identified in both Gram-negative and Gram-positive bacteria. As one of the important global regulatory networks in bacteria, it responds to fluctuations in the numbers of bacteria and regulates the expression of a number of genes, thus affecting cell behavior. We summarize here the known relationships between the LuxS/AI-2 system and drug resistance, discuss the inhibition of LuxS/AI-2 system as an approach to prevent bacterial resistance, and present new strategies for the treatment of drug-resistant pathogens.
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