Abstract
We have previously shown that the C-type Natriuretic Peptide (CNP), a peptide produced by lungs, is able to impact Pseudomonasaeruginosa physiology. In the present work, the effect of CNP at different concentrations on P. aeruginosa biofilm formation was studied and the mechanisms of action of this human hormone on P. aeruginosa were deciphered. CNP was shown to inhibit dynamic biofilm formation in a dose-dependent manner without affecting the bacterial growth at any tested concentrations. The most effective concentrations were 1 and 0.1 µM. At 0.1 µM, the biofilm formation inhibition was fully dependent on the CNP sensor protein AmiC, whereas it was only partially AmiC-dependent at 1 µM, revealing the existence of a second AmiC-independent mode of action of CNP on P. aeruginosa. At 1 µM, CNP reduced both P. aeruginosa adhesion on glass and di-rhamnolipid production and also increased the bacterial membrane fluidity. The various effects of CNP at 1 µM and 0.1 µM on P. aeruginosa shown here should have major consequences to design drugs for biofilm treatment or prevention.
DOI
10.3390/pathogens7020047
Publication Date
2018-04-24
Publication Title
Pathogens
Volume
7
Issue
2
Publisher
MDPI AG
ISSN
2076-0817
Embargo Period
2024-11-19
Additional Links
https://www.ncbi.nlm.nih.gov/pubmed/29695043
Keywords
bacterial adaptation, biofilm, cystic fibrosis, hormones, lung, peptides
Recommended Citation
Desriac, F., Clamens, T., Rosay, T., Rodrigues, S., & et al. (2018) 'Different Dose-Dependent Modes of Action of C-Type Natriuretic Peptide on Pseudomonas aeruginosa Biofilm Formation.', Pathogens, 7(2). MDPI AG: Available at: https://doi.org/10.3390/pathogens7020047
