Pierre-Luc Boudreault
Has grant
Professor
Research Interests
Explore related searches
Contact this professor
About
Professor Pierre-Luc Boudreault is a faculty member at Université de Sherbrooke in Canada. His research focuses on medicinal chemistry, particularly the development of novel therapeutic agents, including opioid-free analgesics and antibiotic compounds. Recent publications highlight his work on potassium current blockers for Brugada syndrome and the antibacterial properties of various chemical modifications. His studies integrate structure-activity relationship analyses to address significant challenges in drug development and bacterial resistance.
Recent Grants
Grant: Close
Increasing the capacity and quality of chemical libraries
Open Date: 2022-03-01
Close Date: 2024-04-01
Grant: Close
Optimization of a Brain-Penetrant NTS2 Non-Opioid Analgesic Lead
Open Date: 2022-03-01
Close Date: 2024-04-01
Grant: Close
Antibioswitch : a new class of antibiotics for treating Staphylococcus aureus infections in humans
Open Date: 2022-02-01
Close Date: 2024-02-01
Grant: Close
Start-up Grant
Open Date: 2021-09-01
Close Date: 2023-11-01
Grant: Close
Acuité-Qc Consortium: predicting and visualizing drug action
Open Date: 2021-07-01
Close Date: 2024-06-01
Positions (2)
Articles (18)
Mode of Antibacterial Action of Tomatidine C3-Diastereoisomers
Tomatidine (TO) is a natural narrow-spectrum antibiotic acting on the Staphylococcus aureus small colony variant (SCV) with a minimal inhibitory concentration (MIC) of 0.06 µg/mL while it shows no activity against prototypical strains (MIC > 128 µg/mL). To expand the spectrum of activity of TO, the 3β-hydroxyl group was substituted with an ethane-1,2-diamine, resulting in two diastereoisomers, TM-02 (C3-β) and TM-03 (C3-α). These molecules are equally potent against prototypical S. aureus and E. coli strains (MIC 8 and 32 µg/mL, respectively), whereas TM-02 is more potent against SCV (MIC 0.5 µg/mL) and hyperpermeable E. coli strains (MIC 1 µg/mL). The differences in their modes of action were investigated. We used membrane vesicles to confirm the inhibition of the bacterial ATP synthase, the documented target of TO, and measured effects on bacterial cell membranes. Both molecules inhibited E. coli ATP synthase, with Ki values of 1.1 µM and 3.5 µM for TM-02 and TM-03, respectively, and the bactericidal effect of TM-02 was linked to ATP synthase inhibition. Furthermore, TM-02 had no major effect on the membrane fluidity and gradually reduced membrane potential. In contrast, TM-03 caused structural damages to membranes and completely disrupted the membrane potential (>90%). We were successful in broadening the spectrum of activity of TO. C3-β-diastereoisomers may have more specific antibacterial action than C3-α.
Year:
2024
Collaborators (9)
Antoine Désilets
Professionnel de recherche
Université de Sherbrooke
Sára Ferková
Lecturer
Bishop's University
Taha Azad
Ottawa Hospital Research Institute
Philippe Sarret
Full professor
Université de Sherbrooke
Thomas Castanheiro
University of Rouen
Élie Besserer-Offroy
Adjunct Professor
Université de Sherbrooke
Christine Lavoie
Université de Sherbrooke
François Malouin
Université de Sherbrooke
Mannix Auger-Messier
Full Professor
Université de Sherbrooke

How do I reach out?
Sign in for free to see their profile details and contact information.