TY - JOUR
T1 - In vitro screens for quorum sensing inhibitors and in vivo confirmation of their effect
AU - Bjarnsholt, Thomas
AU - van Gennip, Maria
AU - Jakobsen, Tim H
AU - Christensen, Louise D
AU - Jensen, Peter Østrup
AU - Givskov, Michael
N1 - Keywords: Animals; Anti-Bacterial Agents; Bacteria; Bacteriological Techniques; Disease Models, Animal; Drug Resistance, Bacterial; Escherichia coli Infections; Gram-Negative Bacteria; Humans; Lung Diseases; Microscopy, Confocal; Microscopy, Electron, Scanning; Models, Animal; Quorum Sensing
PY - 2010/2
Y1 - 2010/2
N2 - This article will introduce the reader to protocols intended for (i) identification of quorum sensing (QS) inhibitors (QSIs), (ii) characterization of these compounds in vitro and (iii) evaluation of these compounds in animal models. Traditional antimicrobial drugs are designed against planktonic bacteria and not against bacterial biofilms. In biofilms, bacteria are highly resistant to otherwise lethal treatments and they communicate with each other, thus enabling coordinated group behavior. For many years, we have focused on interference with cell to cell communication, also known as QS, with the aim of disabling the expression of virulence and reduction of antibiotic tolerance. Here we present protocols for screening and testing for acyl-homoserine lactone (AHL)-dependent QS inhibition. We also present protocols for the in vivo validation of QSIs as possible drug candidates. The presented methods allow the evaluation of QS inhibition by a potential drug candidate within 2-3 weeks.
AB - This article will introduce the reader to protocols intended for (i) identification of quorum sensing (QS) inhibitors (QSIs), (ii) characterization of these compounds in vitro and (iii) evaluation of these compounds in animal models. Traditional antimicrobial drugs are designed against planktonic bacteria and not against bacterial biofilms. In biofilms, bacteria are highly resistant to otherwise lethal treatments and they communicate with each other, thus enabling coordinated group behavior. For many years, we have focused on interference with cell to cell communication, also known as QS, with the aim of disabling the expression of virulence and reduction of antibiotic tolerance. Here we present protocols for screening and testing for acyl-homoserine lactone (AHL)-dependent QS inhibition. We also present protocols for the in vivo validation of QSIs as possible drug candidates. The presented methods allow the evaluation of QS inhibition by a potential drug candidate within 2-3 weeks.
U2 - 10.1038/nprot.2009.205
DO - 10.1038/nprot.2009.205
M3 - Journal article
C2 - 20134428
SN - 1754-2189
VL - 5
SP - 282
EP - 293
JO - Nature Protocols (Print Edition)
JF - Nature Protocols (Print Edition)
IS - 2
ER -