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Guinard P, Hostachy S, Diebold L, Pécaut J, Le Goff A, Duboc C, Delangle P. Outstanding Superoxide Dismutase Catalytic Activity Of Simple Peptide-Based Nickel(II) Complexes. Angew Chem Int Ed Engl 2024; 63:e202409343. [PMID: 39012328 DOI: 10.1002/anie.202409343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/10/2024] [Accepted: 07/15/2024] [Indexed: 07/17/2024]
Abstract
We present here the most active synthetic Ni superoxide dismutase (NiSOD) mimic reported to date. Reactive oxygen species are aggressive compounds, which concentrations are tightly regulated in vivo. Among them, the superoxide anion, O2⋅-, is controlled by superoxide dismutases. Capitalizing on the versatility of the Amino-Terminal CuII- and NiII-binding (ATCUN) peptide motif, we introduced positive charges around the NiII center to favor the interaction with the superoxide radical anion. At physiological pH, the pentapeptide H-Cys-His-Cys-Arg-Arg-NH2 coordinates NiII after the deprotonation of one thiol, two amides, and either the second thiol or the N-terminal ammonium, leading to an equilibrium between the two N3S1 and N2S2 coordination modes. Under catalytic conditions, a kcat value of 8.6(4)×106 L.mol-1.s-1 was measured. Within the first second, the catalyst remained undegraded with quantitative consumption of O2⋅- (completed up to 37 catalytic cycles). An extra arginine (Arg) was introduced at the peptide C-terminus to increase the global charge of the NiII complex from +1 to +2. This had no effect on the catalytic performance, highlighting the critical role of charge distribution in space as a determining factor influencing the reactivity.
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Affiliation(s)
- Pawel Guinard
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, 38000, Grenoble, France
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France
| | - Sarah Hostachy
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, 38000, Grenoble, France
| | - Léa Diebold
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, 38000, Grenoble, France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, 38000, Grenoble, France
| | - Alan Le Goff
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France
| | - Carole Duboc
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France
| | - Pascale Delangle
- Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, 38000, Grenoble, France
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Domergue J, Guinard P, Douillard M, Pécaut J, Hostachy S, Proux O, Lebrun C, Le Goff A, Maldivi P, Duboc C, Delangle P. A Series of Ni Complexes Based on a Versatile ATCUN-Like Tripeptide Scaffold to Decipher Key Parameters for Superoxide Dismutase Activity. Inorg Chem 2023. [PMID: 37247425 DOI: 10.1021/acs.inorgchem.3c00766] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The cellular level of reactive oxygen species (ROS) has to be controlled to avoid some pathologies, especially those linked to oxidative stress. One strategy for designing antioxidants consists of modeling natural enzymes involved in ROS degradation. Among them, nickel superoxide dismutase (NiSOD) catalyzes the dismutation of the superoxide radical anion, O2•-, into O2 and H2O2. We report here Ni complexes with tripeptides derived from the amino-terminal CuII- and NiII-binding (ATCUN) motif that mimics some structural features found in the active site of the NiSOD. A series of six mononuclear NiII complexes were investigated in water at physiological pH with different first coordination spheres, from compounds with a N3S to N2S2 set, and also complexes that are in equilibrium between the N-coordination (N3S) and S-coordination (N2S2). They were fully characterized by a combination of spectroscopic techniques, including 1H NMR, UV-vis, circular dichroism, and X-ray absorption spectroscopy, together with theoretical calculations and their redox properties studied by cyclic voltammetry. They all display SOD-like activity, with a kcat ranging between 0.5 and 2.0 × 106 M-1 s-1. The complexes in which the two coordination modes are in equilibrium are the most efficient, suggesting a beneficial effect of a nearby proton relay.
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Affiliation(s)
- Jérémy Domergue
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Pawel Guinard
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Magali Douillard
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Jacques Pécaut
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Sarah Hostachy
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Olivier Proux
- CNRS, OSUG, Université Grenoble Alpes, 38000 Grenoble, France
| | - Colette Lebrun
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Alan Le Goff
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | - Pascale Maldivi
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
| | - Carole Duboc
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | - Pascale Delangle
- IRIG, SyMMES, Univ. Grenoble Alpes, CEA, CNRS, Grenoble INP, 38000 Grenoble, France
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Garrido MD, El Haskouri J, Marcos MD, Pérez-Pla F, Ros-Lis JV, Amorós P. One-Pot Synthesis of MnO x-SiO 2 Porous Composites as Nanozymes with ROS-Scavenging Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3503. [PMID: 36234632 PMCID: PMC9565283 DOI: 10.3390/nano12193503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 09/30/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
The development of nanomaterials that mimic the activity of enzymes is a topic of interest, for the decomposition of reactive oxygen species (ROS). We report the preparation of a novel nanocomposite of MnOx needles covered with SiO2 porous material. The material was prepared in one pot with a two-step procedure. The material was characterized by EDX, SEM, TEM, XRD, nitrogen adsorption-desorption isotherms, and XPS. The synthesis protocol took advantage of the atrane method, favoring the nucleation and initial growth of manganese oxide needles that remained embedded and homogeneously dispersed in a mesoporous silica matrix. The final composite had a high concentration of Mn (Si/Mn molar ratio of ca. 1). The nanozyme presented bimodal porosity: intraparticle and interparticle association with the surfactant micelles and the gaps between silica particles and MnOx needles, respectively. The porosity favored the migration of the reagent to the surface of the catalytic MnOx. The nanozyme showed very efficient SOD and catalase activities, thus improving other materials previously described. The kinetics were studied in detail, and the reaction mechanisms were proposed. It was shown that silica does not play an innocent role in the case of catalase activity, increasing the reaction rate.
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Affiliation(s)
- M. Dolores Garrido
- Institut de Ciència dels Materials (ICMUV), Universitat de València, Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Jamal El Haskouri
- Institut de Ciència dels Materials (ICMUV), Universitat de València, Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - María D. Marcos
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universitat Politècnica de Valencia, Universitat de València, Departamento de Química, Universitat Politècnica de Valencia, 46022 Valencia, Spain
- CIBER de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Francisco Pérez-Pla
- Institut de Ciència dels Materials (ICMUV), Universitat de València, Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - José Vicente Ros-Lis
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universitat Politècnica de Valencia, Universitat de València, Departamento de Química Inorgánica, Universitat de València, Doctor Moliner 56, 46100 Valencia, Spain
| | - Pedro Amorós
- Institut de Ciència dels Materials (ICMUV), Universitat de València, Catedrático José Beltrán 2, 46980 Paterna, Spain
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SOD mimics: From the tool box of the chemists to cellular studies. Curr Opin Chem Biol 2022; 67:102109. [DOI: 10.1016/j.cbpa.2021.102109] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/15/2021] [Accepted: 12/06/2021] [Indexed: 02/06/2023]
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Domergue J, Guinard P, Douillard M, Pécaut J, Proux O, Lebrun C, Le Goff A, Maldivi P, Delangle P, Duboc C. A Bioinspired Ni II Superoxide Dismutase Catalyst Designed on an ATCUN-like Binding Motif. Inorg Chem 2021; 60:12772-12780. [PMID: 34416109 DOI: 10.1021/acs.inorgchem.1c00899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nickel superoxide dismutase (NiSOD) is an enzyme that protects cells against O2·-. While the structure of its active site is known, the mechanism of the catalytic cycle is still not elucidated. Its active site displays a square planar NiII center with two thiolates, the terminal amine and an amidate. We report here a bioinspired NiII complex built on an ATCUN-like binding motif modulated with one cysteine, which demonstrates catalytic SOD activity in water (kcat = 8.4(2) × 105 M-1 s-1 at pH = 8.1). Its reactivity with O2·- was also studied in acetonitrile allowing trapping two different short-lived species that were characterized by electron paramagnetic resonance or spectroelectrochemistry and a combination of density functional theory (DFT) and time-dependent DFT calculations. Based on these observations, we propose that O2·- interacts first with the complex outer sphere through a H-bond with the peptide scaffold in a [NiIIO2·-] species. This first species could then evolve into a NiIII hydroperoxo inner sphere species through a reaction driven by protonation that is thermodynamically highly favored according to DFT calculations.
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Affiliation(s)
- Jérémy Domergue
- Universite Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.,Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Pawel Guinard
- Universite Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.,Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Magali Douillard
- Universite Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.,Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Jacques Pécaut
- Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Olivier Proux
- Universite Grenoble Alpes, CNRS, OSUG, Grenoble 38000, France
| | - Colette Lebrun
- Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Alan Le Goff
- Universite Grenoble Alpes, CNRS, DCM, Grenoble 38000, France
| | - Pascale Maldivi
- Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Pascale Delangle
- Universite Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble 38000, France
| | - Carole Duboc
- Universite Grenoble Alpes, CNRS, DCM, Grenoble 38000, France
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Lihi N, Kelemen D, May NV, Fábián I. The Role of the Cysteine Fragments of the Nickel Binding Loop in the Activity of the Ni(II)-Containing SOD Enzyme. Inorg Chem 2020; 59:4772-4780. [DOI: 10.1021/acs.inorgchem.0c00057] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Norbert Lihi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, University of Debrecen, H-4032 Debrecen, Hungary
| | - Dóra Kelemen
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Nóra V. May
- Research Centre of Natural Sciences, H-1117 Budapest, Hungary
| | - István Fábián
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, University of Debrecen, H-4032 Debrecen, Hungary
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