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Discovery of Biofilm Inhibitors from the Microbiota of Marine Egg Masses. | LitMetric

Discovery of Biofilm Inhibitors from the Microbiota of Marine Egg Masses.

J Nat Prod

Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States.

Published: June 2024

AI Article Synopsis

Article Abstract

Biofilms commonly develop in immunocompromised patients, which leads to persistent infections that are difficult to treat. In the biofilm state, bacteria are protected against both antibiotics and the host's immune system; currently, there are no therapeutics that target biofilms. In this study, we screened a chemical fraction library representing the natural product capacity of the microbiota of marine egg masses, namely, the moon snail egg collars. This led to the identification of active fractions targeting both and biofilms. Subsequent analysis revealed that a subset of these fractions were capable of eradicating preformed biofilms, all against . Bioassay-guided isolation led us to identify pseudochelin A, a known siderophore, as a biofilm inhibitor with an IC of 88.5 μM. Mass spectrometry-based metabolomic analyses revealed widespread production of pseudochelin A among fractions possessing antibiofilm properties. In addition, a key biosynthetic gene involved in producing pseudochelin A was detected on 30% of the moon snail egg collars and pseudochelin A is capable of inhibiting the formation of biofilms (IC 50.6 μM) produced by ecologically relevant bacterial strains. We propose that pseudochelin A may have a role in shaping the microbiome or protecting the egg collars from microbiofouling.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11217947PMC
http://dx.doi.org/10.1021/acs.jnatprod.4c00376DOI Listing

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