TY  - JOUR
AU  - Schindler, Kevin
AU  - Cortat, Youri
AU  - Nedyalkova, Miroslava
AU  - Crochet, Aurelien
AU  - Lattuada, Marco
AU  - Pavić, Aleksandar
AU  - Zobi, Fabio
PY  - 2022
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1528
AB  - Antimicrobial resistance is one of the major human health threats, with significant impacts on the global economy. Antibiotics are becoming increasingly ineffective as drug-resistance spreads, imposing an urgent need for new and innovative antimicrobial agents. Metal complexes are an untapped source of antimicrobial potential. Rhenium complexes, amongst others, are particularly attractive due to their low in vivo toxicity and high antimicrobial activity, but little is known about their targets and mechanism of action. In this study, a series of rhenium di- and tricarbonyl diimine complexes were prepared and evaluated for their antimicrobial potential against eight different microorganisms comprising Gram-negative and -positive bacteria. Our data showed that none of the Re dicarbonyl or neutral tricarbonyl species have either bactericidal or bacteriostatic potential. In order to identify possible targets of the molecules, and thus possibly understand the observed differences in the antimicrobial efficacy of the molecules, we computationally evaluated the binding affinity of active and inactive complexes against structurally characterized membrane-bound S. aureus proteins. The computational analysis indicates two possible major targets for this class of compounds, namely lipoteichoic acids flippase (LtaA) and lipoprotein signal peptidase II (LspA). Our results, consistent with the published in vitro studies, will be useful for the future design of rhenium tricarbonyl diimine-based antibiotics.
PB  - MDPI, Basel
T2  - Pharmaceuticals
T1  - Antimicrobial Activity of Rhenium Di- and Tricarbonyl Diimine Complexes: Insights on Membrane-Bound S. aureus Protein Binding
IS  - 9
VL  - 15
DO  - 10.3390/ph15091107
ER  - 

@article{
author = "Schindler, Kevin and Cortat, Youri and Nedyalkova, Miroslava and Crochet, Aurelien and Lattuada, Marco and Pavić, Aleksandar and Zobi, Fabio",
year = "2022",
abstract = "Antimicrobial resistance is one of the major human health threats, with significant impacts on the global economy. Antibiotics are becoming increasingly ineffective as drug-resistance spreads, imposing an urgent need for new and innovative antimicrobial agents. Metal complexes are an untapped source of antimicrobial potential. Rhenium complexes, amongst others, are particularly attractive due to their low in vivo toxicity and high antimicrobial activity, but little is known about their targets and mechanism of action. In this study, a series of rhenium di- and tricarbonyl diimine complexes were prepared and evaluated for their antimicrobial potential against eight different microorganisms comprising Gram-negative and -positive bacteria. Our data showed that none of the Re dicarbonyl or neutral tricarbonyl species have either bactericidal or bacteriostatic potential. In order to identify possible targets of the molecules, and thus possibly understand the observed differences in the antimicrobial efficacy of the molecules, we computationally evaluated the binding affinity of active and inactive complexes against structurally characterized membrane-bound S. aureus proteins. The computational analysis indicates two possible major targets for this class of compounds, namely lipoteichoic acids flippase (LtaA) and lipoprotein signal peptidase II (LspA). Our results, consistent with the published in vitro studies, will be useful for the future design of rhenium tricarbonyl diimine-based antibiotics.",
publisher = "MDPI, Basel",
journal = "Pharmaceuticals",
title = "Antimicrobial Activity of Rhenium Di- and Tricarbonyl Diimine Complexes: Insights on Membrane-Bound S. aureus Protein Binding",
number = "9",
volume = "15",
doi = "10.3390/ph15091107"
}

Schindler, K., Cortat, Y., Nedyalkova, M., Crochet, A., Lattuada, M., Pavić, A.,& Zobi, F.. (2022). Antimicrobial Activity of Rhenium Di- and Tricarbonyl Diimine Complexes: Insights on Membrane-Bound S. aureus Protein Binding. in Pharmaceuticals
MDPI, Basel., 15(9).
https://doi.org/10.3390/ph15091107

Schindler K, Cortat Y, Nedyalkova M, Crochet A, Lattuada M, Pavić A, Zobi F. Antimicrobial Activity of Rhenium Di- and Tricarbonyl Diimine Complexes: Insights on Membrane-Bound S. aureus Protein Binding. in Pharmaceuticals. 2022;15(9).
doi:10.3390/ph15091107 .

Schindler, Kevin, Cortat, Youri, Nedyalkova, Miroslava, Crochet, Aurelien, Lattuada, Marco, Pavić, Aleksandar, Zobi, Fabio, "Antimicrobial Activity of Rhenium Di- and Tricarbonyl Diimine Complexes: Insights on Membrane-Bound S. aureus Protein Binding" in Pharmaceuticals, 15, no. 9 (2022),
https://doi.org/10.3390/ph15091107 . .

TY  - JOUR
AU  - Sovari, Sara Nasiri
AU  - Kolly, Isabelle
AU  - Schindler, Kevin
AU  - Cortat, Youri
AU  - Liu, Shing-Chi
AU  - Crochet, Aurelien
AU  - Pavić, Aleksandar
AU  - Zobi, Fabio
PY  - 2021
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1459
AB  - The reaction of rhenium alpha-diimine (N-N) tricarbonyl complexes with nitrosonium tetrafluoroborate yields the corresponding dicarbonyl-nitrosyl [Re(CO)(2)(NO)(N-N)X](+) species (where X = halide). The complexes, accessible in a single step in good yield, are structurally nearly identical higher charge congeners of the tricarbonyl molecules. Substitution chemistry aimed at the realization of equivalent dicationic species (intended for applications as potential antimicrobial agents), revealed that the reactivity of metal ion in [Re(CO)(2)(NO)(N-N)X](+) is that of a hard Re acid, probably due to the stronger pi-acceptor properties of NO+ as compared to those of CO. The metal ion thus shows great affinity for pi-basic ligands, which are consequently difficult to replace by, e.g., sigma-donor or weak pi-acids like pyridine. Attempts of direct nitrosylation of alpha-diimine fac-[Re(CO)(3)](+) complexes bearing pi-basic OR-type ligands gave the [Re(CO)(2)(NO)(N-N)(BF4)][BF4] salt as the only product in good yield, featuring a stable Re-FBF3 bond. The solid state crystal structure of nearly all molecules presented could be elucidated. A fundamental consequence of the chemistry of [Re(CO)(2)(NO)(N-N)X](+) complexes, it that the same can be photo-activated towards CO release and represent an entirely new class of photoCORMs.
PB  - MDPI, Basel
T2  - Molecules
T1  - Efficient Direct Nitrosylation of alpha-Diimine Rhenium Tricarbonyl Complexes to Structurally Nearly Identical Higher Charge Congeners Activable towards Photo-CO Release
IS  - 17
VL  - 26
DO  - 10.3390/molecules26175302
ER  - 

@article{
author = "Sovari, Sara Nasiri and Kolly, Isabelle and Schindler, Kevin and Cortat, Youri and Liu, Shing-Chi and Crochet, Aurelien and Pavić, Aleksandar and Zobi, Fabio",
year = "2021",
abstract = "The reaction of rhenium alpha-diimine (N-N) tricarbonyl complexes with nitrosonium tetrafluoroborate yields the corresponding dicarbonyl-nitrosyl [Re(CO)(2)(NO)(N-N)X](+) species (where X = halide). The complexes, accessible in a single step in good yield, are structurally nearly identical higher charge congeners of the tricarbonyl molecules. Substitution chemistry aimed at the realization of equivalent dicationic species (intended for applications as potential antimicrobial agents), revealed that the reactivity of metal ion in [Re(CO)(2)(NO)(N-N)X](+) is that of a hard Re acid, probably due to the stronger pi-acceptor properties of NO+ as compared to those of CO. The metal ion thus shows great affinity for pi-basic ligands, which are consequently difficult to replace by, e.g., sigma-donor or weak pi-acids like pyridine. Attempts of direct nitrosylation of alpha-diimine fac-[Re(CO)(3)](+) complexes bearing pi-basic OR-type ligands gave the [Re(CO)(2)(NO)(N-N)(BF4)][BF4] salt as the only product in good yield, featuring a stable Re-FBF3 bond. The solid state crystal structure of nearly all molecules presented could be elucidated. A fundamental consequence of the chemistry of [Re(CO)(2)(NO)(N-N)X](+) complexes, it that the same can be photo-activated towards CO release and represent an entirely new class of photoCORMs.",
publisher = "MDPI, Basel",
journal = "Molecules",
title = "Efficient Direct Nitrosylation of alpha-Diimine Rhenium Tricarbonyl Complexes to Structurally Nearly Identical Higher Charge Congeners Activable towards Photo-CO Release",
number = "17",
volume = "26",
doi = "10.3390/molecules26175302"
}

Sovari, S. N., Kolly, I., Schindler, K., Cortat, Y., Liu, S., Crochet, A., Pavić, A.,& Zobi, F.. (2021). Efficient Direct Nitrosylation of alpha-Diimine Rhenium Tricarbonyl Complexes to Structurally Nearly Identical Higher Charge Congeners Activable towards Photo-CO Release. in Molecules
MDPI, Basel., 26(17).
https://doi.org/10.3390/molecules26175302

Sovari SN, Kolly I, Schindler K, Cortat Y, Liu S, Crochet A, Pavić A, Zobi F. Efficient Direct Nitrosylation of alpha-Diimine Rhenium Tricarbonyl Complexes to Structurally Nearly Identical Higher Charge Congeners Activable towards Photo-CO Release. in Molecules. 2021;26(17).
doi:10.3390/molecules26175302 .

Sovari, Sara Nasiri, Kolly, Isabelle, Schindler, Kevin, Cortat, Youri, Liu, Shing-Chi, Crochet, Aurelien, Pavić, Aleksandar, Zobi, Fabio, "Efficient Direct Nitrosylation of alpha-Diimine Rhenium Tricarbonyl Complexes to Structurally Nearly Identical Higher Charge Congeners Activable towards Photo-CO Release" in Molecules, 26, no. 17 (2021),
https://doi.org/10.3390/molecules26175302 . .