Detection of N-acylhomoserine lactones in lung tissues of mice infected with Pseudomonas aeruginosa
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Detection of N-acylhomoserine lactones in lung tissues of mice infected with Pseudomonas aeruginosa. / Wu, H; Song, Z; Hentzer, Morten; Andersen, Jens Bo; Heydorn, Arne; Mathee, K; Moser, C; Eberl, Leo; Molin, Søren; Høiby, N; Givskov, M.
In: Microbiology, Vol. 146 ( Pt 10), 2000, p. 2481-93.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Detection of N-acylhomoserine lactones in lung tissues of mice infected with Pseudomonas aeruginosa
AU - Wu, H
AU - Song, Z
AU - Hentzer, Morten
AU - Andersen, Jens Bo
AU - Heydorn, Arne
AU - Mathee, K
AU - Moser, C
AU - Eberl, Leo
AU - Molin, Søren
AU - Høiby, N
AU - Givskov, M
PY - 2000
Y1 - 2000
N2 - The pathogenesis of Pseudomonas aeruginosa is associated with expression of virulence factors, many of which are controlled by two N:-acylhomoserine lactone (AHL)-based quorum-sensing systems. Escherichia coli strains equipped with a luxR-based monitor system expressing green fluorescent protein (GFP) in the presence of exogenous AHL molecules were used to detect the production of AHLs from P. aeruginosa in vivo. Mice were challenged intratracheally with alginate beads containing P. aeruginosa and E. coli and killed on different days after the challenge. By means of confocal scanning laser microscopy, GFP-expressing E. coli bacteria could be detected in the lung tissues, indicating production and excretion of AHL molecules in vivo by the infecting P. aeruginosa. AHL signals were detected mainly in lung tissues exhibiting severe pathological changes. These findings support the view that expression of AHL molecules by P. aeruginosa during infection coincides with its pathogenesis.
AB - The pathogenesis of Pseudomonas aeruginosa is associated with expression of virulence factors, many of which are controlled by two N:-acylhomoserine lactone (AHL)-based quorum-sensing systems. Escherichia coli strains equipped with a luxR-based monitor system expressing green fluorescent protein (GFP) in the presence of exogenous AHL molecules were used to detect the production of AHLs from P. aeruginosa in vivo. Mice were challenged intratracheally with alginate beads containing P. aeruginosa and E. coli and killed on different days after the challenge. By means of confocal scanning laser microscopy, GFP-expressing E. coli bacteria could be detected in the lung tissues, indicating production and excretion of AHL molecules in vivo by the infecting P. aeruginosa. AHL signals were detected mainly in lung tissues exhibiting severe pathological changes. These findings support the view that expression of AHL molecules by P. aeruginosa during infection coincides with its pathogenesis.
KW - 4-Butyrolactone
KW - Animals
KW - Cystic Fibrosis
KW - Disease Models, Animal
KW - Gene Expression Regulation, Bacterial
KW - Green Fluorescent Proteins
KW - Humans
KW - Luminescent Proteins
KW - Lung
KW - Mice
KW - Mice, Inbred CBA
KW - Pseudomonas Infections
KW - Pseudomonas aeruginosa
KW - Signal Transduction
U2 - 10.1099/00221287-146-10-2481
DO - 10.1099/00221287-146-10-2481
M3 - Journal article
C2 - 11021924
VL - 146 ( Pt 10)
SP - 2481
EP - 2493
JO - Microbiology
JF - Microbiology
SN - 1350-0872
ER -
ID: 44305003