Marine organisms as source of extracts to disrupt bacterial communication: bioguided isolation and identification of quorum sensing inhibitors from Ircinia felix

Revista Brasileira de Farmacognosia

Castellanos, Leonardo¹  Universidad Nacional de Colombia, Bogotá, CO¹  Costa, Geison M.¹  Quintana, Jairo¹  Duque, Carmenza¹  Arévalo, Catalina¹  Brango-Vanegas, José¹ 

关键词:  Quorum sensing;    Marine products;    Ircinia felix;    Furanosesterterpenes;    Biofilm;   

DOI  :  10.1016/j.bjp.2015.03.013

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

In this study, 39 extracts from marine organisms were evaluated as quorum sensing inhibitors, collected in the Colombian Caribbean Sea and the Brazilian Coast including 26 sponges, seven soft corals, five algae and one zooanthid. The results showed that crude extracts from the soft coral Eunicea laciniata, and the sponges Svenzea tubulosa, Ircinia felix and Neopetrosia carbonaria were the most promising source of quorum sensing inhibitors compounds without affecting bacterial growth, unlike the raw extracts of Agelas citrina, Agelas tubulata, Iotrochota arenosa, Topsentia ophiraphidites, Niphates caycedoi, Cliona tenuis, Ptilocaulis walpersi, Petrosia pellasarca, and the algae Laurencia catarinensis and Laurencia obtusa, which displayed potent antibacterial activity against the biosensors employed. The crude extract from the sponge I. felix was fractionated, obtaining furanosesterterpenes which were identified and evaluated as quorum sensing inhibitors, showing a moderate activity without affecting the biosensor's growth.

【 授权许可】

Unknown