Diverse Bacteriocins Produced by Strains From the Human Milk Microbiota.
antibiotic resistance
antimicrobials
bacteriocins
genome mining
human microbiota
human milk
lantibiotics
sactibiotics
Journal
Frontiers in microbiology
ISSN: 1664-302X
Titre abrégé: Front Microbiol
Pays: Switzerland
ID NLM: 101548977
Informations de publication
Date de publication:
2020
2020
Historique:
received:
04
02
2020
accepted:
02
04
2020
entrez:
9
6
2020
pubmed:
9
6
2020
medline:
9
6
2020
Statut:
epublish
Résumé
Microbial colonization of the infant gut is a convoluted process dependent on numerous contributing factors, including age, mode of delivery and diet among others that has lifelong implication for human health. Breast milk also contains a microbiome which acts as a source of colonizing bacteria for the infant. Here, we demonstrate that human milk harbors a wide diversity of bacteriocin-producing strains with the potential to compete among the developing gut microbiota of the infant. We screened 37 human milk samples and found isolates with antimicrobial activity and distinct cross-immunity profiles. From these isolates, we detected 73 putative gene clusters for bacteriocins of all known sub-classes, including 16 novel prepeptides. More specifically, we detected two novel lantibiotics, four sactibiotics and three class IIa bacteriocins with an unusual modification of the pediocin box that is composed of YDNGI instead of the highly conserved motif YGNGV. Moreover, we identified a novel class IIb bacteriocin, four novel class IIc and two class IId bacteriocins. In conclusion, human milk contains a variety of bacteriocin-producing strains which may provide them a competitive advantage in the colonization of the infant gut and suggests that the milk microbiota is a source of antimicrobial potential.
Identifiants
pubmed: 32508758
doi: 10.3389/fmicb.2020.00788
pmc: PMC7248182
doi:
Types de publication
Journal Article
Langues
eng
Pagination
788Informations de copyright
Copyright © 2020 Angelopoulou, Warda, O’Connor, Stockdale, Shkoporov, Field, Draper, Stanton, Hill and Ross.
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