Marine Antibiotics 2022

A special issue of Marine Drugs (ISSN 1660-3397).

Deadline for manuscript submissions: closed (29 July 2022) | Viewed by 3527

Special Issue Editor


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Guest Editor
Laboratoire de Biotechnologie et Chimie Marine, Université de Brest, Université de Bretagne Sud, CNRS, LBCM, EMR 6076, Quimper, France
Interests: antimicrobial peptides; antibacterial activity; NRPS
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Special Issue Information

Dear Colleagues,

Nowadays, antimicrobial resistance (AMR) is expected to be one of the leading causes of death in the world in 2050 and, therefore, is considered as one of the most serious threats to global public health. It is clear that the renewal of the therapeutic arsenal is a major priority, if only to treat patients. However, despite considerable international efforts to tackle AMR, only 11 new antibiotics have been approved since July 2017. Obviously, the “2020 antibacterial agents in clinical and preclinical development” report from the WHO recently concludes that “Overall, the clinical pipeline and recently approved antibiotics are insufficient to tackle the challenge of increasing emergence and spread of antimicrobial resistance”.

In 2020, the preclinical antibacterial pipeline was made of 292 diverse antibacterial agents categorized in antimicrobial peptides (n = 29), vaccines (n = 47), non-traditional approaches (category comprising antibodies, bacteriophages, microbiome modulating agents, antivirulence agents, n = 101), and finally the direct-acting small molecules (n = 115). Interestingly, micro- and small-sized enterprises are the main developers (113 antibacterial agents), while only 29 preclinical agents are developed by medium and large enterprises. With the rate of success being very low, the antibiotic discovery has to be reinvigorated. The marine biodiversity is still an under-explored reservoir of bioactive compounds and it must play its full role in the race against time to design potent and effective drugs to tackle AMR.

The first Special Issue dedicated to marine antibiotics was managed by Prof. Sergey Zotchev in 2012. It assembled 11 papers, which have collected according to the Web of Science, to date, 328 citations. After the six articles compiled in the second Special Issue named “Marine Antibiotics 2020”, this third opus, “Marine Antibiotics 2022”, is now open to aggregate innovative data regarding marine antibiotics, whatever their origin (archaebacteria, eubacteria, algae, animals, or even metagenomic data mining), biosynthesis pathway, chemical nature (PKS, NRPS, peptides, alkaloids, etc.), or mechanisms of actions, whatever the target (biofilm, virulence, Quorum sensing). Original research, as well as review articles, is welcome. Scientists are invited to contribute in order to combine expertise in (meta)data mining, microbiology, biochemistry, biotechnology, cellular biology, and medicine.

Dr. Yannick Fleury
Guest Editor

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Published Papers (1 paper)

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Research

16 pages, 1828 KiB  
Article
Fucoidan and Derived Oligo-Fucoses: Structural Features with Relevance in Competitive Inhibition of Gastrointestinal Norovirus Binding
by Franz-Georg Hanisch, Cem Aydogan and Horst Schroten
Mar. Drugs 2021, 19(11), 591; https://doi.org/10.3390/md19110591 - 21 Oct 2021
Cited by 9 | Viewed by 2891
Abstract
Norovirus infections belong to the most common causes of human gastroenteritis worldwide and epidemic outbreaks are responsible for hundreds of thousands of deaths annually. In humans, noroviruses are known to bind to gastrointestinal epithelia via recognition of blood-group active mucin-type O-glycans. Considering the [...] Read more.
Norovirus infections belong to the most common causes of human gastroenteritis worldwide and epidemic outbreaks are responsible for hundreds of thousands of deaths annually. In humans, noroviruses are known to bind to gastrointestinal epithelia via recognition of blood-group active mucin-type O-glycans. Considering the involvement of l-α-fucose residues in these glycans, their high valency on epithelial surfaces far surpasses the low affinity, though specific interactions of monovalent milk oligosaccharides. Based on these findings, we attempted to identify polyfucoses (fucans) with the capacity to block binding of the currently most prevalent norovirus strain GII.4 (Sydney, 2012, JX459908) to human and animal gastrointestinal mucins. We provide evidence that inhibitory effects on capsid binding are exerted in a competitive manner by α-fucosyl residues on Fucus vesiculosus fucoidan, but also on the galacto-fucan from Undaria pinnatifida and their oligo-fucose processing products. Insight into novel structural aspects of fucoidan and derived oligosaccharides from low-mass Undaria pinnatifida were revealed by GCMS and MALDI mass spectrometry. In targeting noroviral spread attenuation, this study provides first steps towards a prophylactic food additive that is produced from algal species. Full article
(This article belongs to the Special Issue Marine Antibiotics 2022)
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