PMID- 35889190 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220731 IS - 2076-2607 (Print) IS - 2076-2607 (Electronic) IS - 2076-2607 (Linking) VI - 10 IP - 7 DP - 2022 Jul 20 TI - iChip-Inspired Isolation, Bioactivities and Dereplication of Actinomycetota from Portuguese Beach Sediments. LID - 10.3390/microorganisms10071471 [doi] LID - 1471 AB - Oceans hold a stunning number of unique microorganisms, which remain unstudied by culture-dependent methods due to failures in establishing the right conditions for these organisms to grow. In this work, an isolation effort inspired by the iChip was performed using marine sediments from Memoria beach, Portugal. The isolates obtained were identified by 16S rRNA gene analysis, fingerprinted using BOX-PCR and ERIC-PCR, searched for the putative presence of secondary metabolism genes associated with polyketide synthase I (PKS-I) and non-ribosomal peptide synthetases (NRPS), screened for antimicrobial activity against Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 29213, and had bioactive extracts dereplicated by LC/HRMS. Of the 158 isolated strains, 96 were affiliated with the phylum Actinomycetota, PKS-I and NRPS genes were detected in 53 actinomycetotal strains, and 11 proved to be bioactive (10 against E. coli, 1 against S. aureus and 1 against both pathogens). Further bioactivities were explored using an "one strain many compounds" approach, with six strains showing continued bioactivity and one showing a novel one. Extract dereplication showed the presence of several known bioactive molecules and potential novel ones in the bioactive extracts. These results indicate the use of the bacteria isolated here as sources of new bioactive natural products. FAU - Dos Santos, Jose Diogo Neves AU - Dos Santos JDN AUID- ORCID: 0000-0002-9693-4857 AD - Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre S/N, 4169-007 Porto, Portugal. AD - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixoes, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal. FAU - Joao, Susana Afonso AU - Joao SA AD - Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre S/N, 4169-007 Porto, Portugal. AD - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixoes, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal. FAU - Martin, Jesus AU - Martin J AD - Fundacion MEDINA, Centro de Excelencia en Investigacion de Medicamentos Innovadores en Andalucia, Avenida del Conocimiento, 34 Parque Tecnologico de Ciencias de la Salud, 18016 Granada, Spain. FAU - Vicente, Francisca AU - Vicente F AD - Fundacion MEDINA, Centro de Excelencia en Investigacion de Medicamentos Innovadores en Andalucia, Avenida del Conocimiento, 34 Parque Tecnologico de Ciencias de la Salud, 18016 Granada, Spain. FAU - Reyes, Fernando AU - Reyes F AUID- ORCID: 0000-0003-1607-5106 AD - Fundacion MEDINA, Centro de Excelencia en Investigacion de Medicamentos Innovadores en Andalucia, Avenida del Conocimiento, 34 Parque Tecnologico de Ciencias de la Salud, 18016 Granada, Spain. FAU - Lage, Olga Maria AU - Lage OM AUID- ORCID: 0000-0002-3950-3970 AD - Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre S/N, 4169-007 Porto, Portugal. AD - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixoes, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal. LA - eng GR - UIDB/04423/2020/Fundacao para a Ciencia e Tecnologia/ GR - UIDP/04423/2020/Fundacao para a Ciencia e Tecnologia/ GR - SFRH/BD/145576/2019/Fundacao para a Ciencia e Tecnologia/ PT - Journal Article DEP - 20220720 PL - Switzerland TA - Microorganisms JT - Microorganisms JID - 101625893 PMC - PMC9319460 OTO - NOTNLM OT - LC/HRMS OT - antimicrobial activities OT - iChip OT - marine Actinomycetota COIS- The authors declare no conflict of interest. EDAT- 2022/07/28 06:00 MHDA- 2022/07/28 06:01 PMCR- 2022/07/20 CRDT- 2022/07/27 01:33 PHST- 2022/07/01 00:00 [received] PHST- 2022/07/13 00:00 [revised] PHST- 2022/07/19 00:00 [accepted] PHST- 2022/07/27 01:33 [entrez] PHST- 2022/07/28 06:00 [pubmed] PHST- 2022/07/28 06:01 [medline] PHST- 2022/07/20 00:00 [pmc-release] AID - microorganisms10071471 [pii] AID - microorganisms-10-01471 [pii] AID - 10.3390/microorganisms10071471 [doi] PST - epublish SO - Microorganisms. 2022 Jul 20;10(7):1471. doi: 10.3390/microorganisms10071471.