Quorum sensing inhibitors from Leucetta chagosensis Dendy, 1863


Autoria(s): Mai, T.; Tintillier, Florent; Lucasson, Aude; Moriou, C.; Bonno, E.; Petek, S.; Magre, Kevin; Al Mourabit, A.; Saulnier, Denis; Debitus, C.
Data(s)

01/10/2015

Resumo

Sponges are a rich source for investigation of bioactive small molecules. They have been mostly investigated for the search of new pharmacological models or therapeutic agents for the treatment of human diseases. Micro-organisms can also represent a virulent pathogen for marine invertebrates such as sponges, which need to protect themselves against these microbes. Sponges' self defence mechanisms involving dialogue molecules thus represent a pertinent research track for potent anti-infective and anti-biofilm activities such as quorum sensing inhibitors (QSIs). The investigation of the QSI crude extract of Leucetta chagosensis Dendy, 1863 led to the isolation of three new alkaloids, isonaamine D, di-isonaamidine A and leucettamine D, along with the known isonaamine A and isonaamidine A. Isonaamidine A and isonaamine D were identified as inhibitors of the three quorum sensing pathways of Vibrio harveyi (CAI-1, AI-2 and harveyi auto inducer), but isonaamidine A displayed the strongest activity on AI-2 biosensor. Both compounds are new examples of natural QSIs of V. harveyi. These results outline the importance of these secondary metabolites for their producing organisms themselves in their natural environment, as well as the potential of the marine resource for aquaculture needs.

Formato

application/pdf

Identificador

http://archimer.ifremer.fr/doc/00275/38597/37189.pdf

DOI:10.1111/lam.12461

http://archimer.ifremer.fr/doc/00275/38597/

Idioma(s)

eng

Publicador

Wiley-blackwell

Direitos

2015 The Society for Applied Microbiology

info:eu-repo/semantics/openAccess

restricted use

Fonte

Letters In Applied Microbiology (0266-8254) (Wiley-blackwell), 2015-10 , Vol. 61 , N. 4 , P. 311-317

Palavras-Chave #biofouling #Leucetta chagosensis #leucettamine #naamidine #naamine #quorum sensing #quorum sensing inhibitors #sponges #Vibrio harveyi
Tipo

text

Publication

info:eu-repo/semantics/article