Bioactivities and Extract Dereplication of Actinomycetales Isolated From Marine Sponges
In the beginning of the twenty-first century, humanity faces great challenges regarding diseases and health-related quality of life. A drastic rise in bacterial antibiotic resistance, in the number of cancer patients, in the obesity epidemics and in chronic diseases due to life expectation extension...
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Published in | Frontiers in microbiology Vol. 10; p. 727 |
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Main Authors | , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
Frontiers Media S.A
09.04.2019
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Subjects | |
Online Access | Get full text |
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Summary: | In the beginning of the twenty-first century, humanity faces great challenges regarding diseases and health-related quality of life. A drastic rise in bacterial antibiotic resistance, in the number of cancer patients, in the obesity epidemics and in chronic diseases due to life expectation extension are some of these challenges. The discovery of novel therapeutics is fundamental and it may come from underexplored environments, like marine habitats, and microbial origin.
are well-known as treasure chests for the discovery of novel natural compounds. In this study, eighteen
isolated from marine sponges of three
genera collected in Portuguese waters were tested for bioactivities with the main goal of isolating and characterizing the responsible bioactive metabolites. The screening comprehended antimicrobial, anti-fungal, anti-parasitic, anti-cancer and anti-obesity properties. Fermentations of the selected strains were prepared using ten different culturing media. Several bioactivities against the fungus
, the bacteria
methicillin-resistant (MRSA) and the human liver cancer cell line HepG2 were obtained in small volume cultures. Screening in higher volumes showed consistent anti-fungal activity by strain
sp. #91-17 and
Berg02-26.
sp. Berg02-22.2 showed anti-parasitic (
) and anti-cancer activity against several cell lines (melanoma A2058, liver HepG2, colon HT29, breast MCF7 and pancreatic MiaPaca). For the anti-obesity assay,
#91-29 and #91-40 induced lipid reduction on the larvae of zebrafish (
). Dereplication of the extracts from several bacteria showed the existence of a variety of secondary metabolites, with some undiscovered molecules. This work showed that
are indeed good candidates for drug discovery. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Reviewed by: Ravindra Nath Kharwar, Banaras Hindu University, India; Sheng Qin, Jiangsu Normal University, China; D. Ipek Kurtböke, University of the Sunshine Coast, Australia Edited by: Learn-Han Lee, Monash University Malaysia, Malaysia This article was submitted to Antimicrobials, Resistance and Chemotherapy, a section of the journal Frontiers in Microbiology |
ISSN: | 1664-302X 1664-302X |
DOI: | 10.3389/fmicb.2019.00727 |