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Updated: May 4, 2026

A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues
Published on: February 19, 2019
Effects of fluoride on bacterial growth and its gene/protein expression
Haili Ma1, Xiaohu Wu1, Meng Yang1
1Shanxi Key Laboratory of Ecological Animal Science and Environmental Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
Abstract:
To determine the effects of fluoride on bacterial growth, as well as upon its gene/protein expression, we grew Escherichia coli expressing GFPuv (E. coli-GFPuv) in Luria Bertani medium at different concentrations of NaF, 0, 0.1 mM, 1 mM, 10 mM and 100 mM. Results showed that E. coli-pGFPuv growth and expression of mRNA and protein of GFPuv were increased at 0.1 and 1 mM, but were inhibited at 10 and 100 mM, which demonstrated that fluoride has a classic rise/fall response of inducing E. coli-GFPuv growth and gene and protein expression of GFPuv at 1 mM. Our observation suggests that the effect of fluoride on bacterial growth may be from regulation of mRNA expression.
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