PqsR/LasR-IN-1

PqsR/LasR-IN-1 (Compound 2a) is a potent inhibitor of LasR and PqsR systems in P. aeruginosa. PqsR/LasR-IN-1 is also a inhibitor of hERG (IC50= 6.77 μM).

RhlR antagonist 1 is a highly effective antagonist of the RhlR protein, showing an IC50 value of 26 μM. It exhibits selective antagonistic activity against RhlR, with minimal effect on LasR and PqsR. RhlR antagonist 1 strongly inhibits biofilm formation in both static and dynamic environments and reduces the production of virulence factors, such as rhamnolipid and pyocyanin, in P. aeruginosa. These characteristics make RhlR antagonist 1 a valuable tool for the development of molecules that modulate quorum sensing and control P. aeruginosa infections [1].

PqsR/LasR-IN-3 (Compound 7a) inhibits hERG with an IC50 of 109.01 μM and also functions as a PqsR and LasR systems inhibitor in P. aeruginosa [1].