Repurposing a platelet aggregation inhibitor ticagrelor as an antimicrobial against Clostridioides difficile.

Abstract:

:Drug resistance in Clostridioides difficile becomes a public health concern worldwide, especially as the hypervirulent strains show decreased susceptibility to the first-line antibiotics for C. difficile treatment. Therefore, the simultaneous discovery and development of new compounds to fight this pathogen are urgently needed. In order to determinate new drugs active against C. difficile, we identified ticagrelor, utilized for the prevention of thrombotic events, as exhibiting potent growth-inhibitory activity against C. difficile. Whole-cell growth inhibition assays were performed and compared to vancomycin and metronidazole, followed by determining time-kill kinetics against C. difficile. Activities against biofilm formation and spore germination were also evaluated. Leakage analyses and electron microscopy were applied to confirm the disruption of membrane structure. Finally, ticagrelor's ability to synergize with vancomycin and metronidazole was determined using checkerboard assays. Our data showed that ticagrelor exerted activity with a MIC range of 20-40 µg/mL against C. difficile. This compound also exhibited an inhibitory effect on biofilm formation and spore germination. Additionally, ticagrelor did not interact with vancomycin nor metronidazole. Our findings revealed for the first time that ticagrelor could be further developed as a new antimicrobial agent for fighting against C. difficile.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Phanchana M,Phetruen T,Harnvoravongchai P,Raksat P,Ounjai P,Chankhamhaengdecha S,Janvilisri T

doi

10.1038/s41598-020-63199-x

subject

Has Abstract

pub_date

2020-04-16 00:00:00

pages

6497

issue

1

issn

2045-2322

pii

10.1038/s41598-020-63199-x

journal_volume

10

pub_type

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