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Antifouling napyradiomycins from marine-derived actinomycetes streptomyces aculeolatus

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Resumo:The undesired attachment of micro and macroorganisms on water-immersed surfaces, known as marine biofouling, results in severe prevention and maintenance costs (billions €/year) for aquaculture, shipping and other industries that rely on coastal and off-shore infrastructures. To date, there are no sustainable, cost-effective and environmentally safe solutions to address this challenging phenomenon. Therefore, we investigated the antifouling activity of napyradiomycin derivatives that were isolated from actinomycetes from ocean sediments collected off the Madeira Archipelago. Our results revealed that napyradiomycins inhibited ≥80% of the marine biofilm-forming bacteria assayed, as well as the settlement of Mytilus galloprovincialis larvae (EC50 < 5 µg/ml and LC50/EC50 >15), without viability impairment. In silico prediction of toxicity end points are of the same order of magnitude of standard approved drugs and biocides. Altogether, napyradiomycins disclosed bioactivity against marine micro and macrofouling organisms, and non-toxic effects towards the studied species, displaying potential to be used in the development of antifouling products.
Autores principais:Pereira, Florbela
Outros Autores:Almeida, Joana R.; Paulino, Marisa; Grilo, Inês R.; Macedo, Helena; Cunha, Isabel; Sobral, Rita G.; Vasconcelos, Vitor; Gaudêncio, Susana P.
Assunto:Actinomycetes Antibiofilm Antifouling Biofouling Bioprospection Drug discovery Hybrid isoprenoids Marine natural products Meroterpenoids Napyradiomycins Drug Discovery SDG 14 - Life Below Water
Ano:2020
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade Nova de Lisboa
Idioma:inglês
Origem:Repositório Institucional da UNL

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