Synergistic Enzybiotic Effect of a Bacteriophage Endolysin and an Engineered Glucose Oxidase Against

Overview

Journal Biomolecules

Publisher MDPI

Date 2025 Jan 25

PMID 39858419

Authors

David Talens-Perales

Jose-Antonio Daros

Julio Polaina

Julia Marin-Navarro

Affiliations

Soon will be listed here.

Abstract

represents one of the main risks for food safety worldwide. Two enzyme-based antimicrobials (enzybiotics) have been combined in a novel treatment against this pathogenic bacterium, resulting in a powerful synergistic effect. One of the enzymes is an endolysin from phage vB_LmoS_188 with amidase activity (henceforth A10), and the other is an engineered version of glucose oxidase from (GOX). Both enzymes, assayed separately against , showed antibacterial activity at the appropriate doses. The combination of the two enzybiotics resulted in a synergistic effect with a log reduction in viable cells (log N/N) of 4, whereas, taken separately, the same dose of A10 and GOX caused only 1.2 and 0.2 log reductions, respectively. Flow cytometry and microscopy analyses revealed that A10 treatment alone induced the aggregation of dead cells. showed higher resistance to single treatment with GOX or A10 than . However, the synergic combination of A10 and GOX resulted in a high lethality of with a log N/N higher than 5 (below the detection limit in our analysis). Altogether, these results represent a novel efficient and eco-friendly antimicrobial treatment against the most lethal food-borne pathogen.

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