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Malikidogo KP, Drommi M, Atrián-Blasco E, Hormann J, Kulak N, Esmieu C, Hureau C. Ability of Azathiacyclen Ligands To Stop Cu(Aβ)-Induced Production of Reactive Oxygen Species: [3N1S] Is the Right Donor Set. Chemistry 2023; 29:e202203667. [PMID: 36606721 DOI: 10.1002/chem.202203667] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/07/2023]
Abstract
Alzheimer's disease (AD) is an incurable neurodegenerative disease that leads to the progressive and irreversible loss of mental functions. The amyloid beta (Aβ) peptide involved in the disease is responsible for the production of damaging reactive oxygen species (ROS) when bound to Cu ions. A therapeutic approach that consists of removing Cu ions from Aβ to alter this deleterious interaction is currently being developed. In this context, we report the ability of five different 12-membered thiaazacyclen ligands to capture Cu from Aβ and to redox silence it. We propose that the presence of a sole sulfur atom in the ligand increases the rate of Cu capture and removal from Aβ, while the kinetic aspect of the chelation was an issue encountered with the 4N parent ligand. The best ligand for removing Cu from Aβ and inhibiting the associated ROS production is the 1-thia-4,7,10-triazacyclododecane [3N1S]. Indeed the replacement of more N by S atoms makes the corresponding Cu complexes easier to reduce and thus able to produce ROS on their own. In addition, the ligand with three sulfur atoms has a weaker affinity for CuII than Aβ, and is thus unable to remove Cu from CuAβ.
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Affiliation(s)
- Kyangwi P Malikidogo
- LCC-CNRS, Université de Toulouse, CNRS, 31400, Toulouse, France.,Université Grenoble Alpes, DCM (UMR 5250) - CNRS and CEA, IRIG, LCBM (UMR, 5249, Grenoble, France
| | - Marielle Drommi
- LCC-CNRS, Université de Toulouse, CNRS, 31400, Toulouse, France
| | - Elena Atrián-Blasco
- LCC-CNRS, Université de Toulouse, CNRS, 31400, Toulouse, France.,Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, 50009, Spain
| | - Jan Hormann
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Nora Kulak
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany.,Institut für Chemie, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany
| | - Charlène Esmieu
- LCC-CNRS, Université de Toulouse, CNRS, 31400, Toulouse, France
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Malikidogo KP, Drommi M, Atrián‐Blasco E, Hormann J, Kulak N, Esmieu C, Hureau C. Ability of Azathiacyclen Ligands To Stop Cu(Aβ)‐Induced Production of Reactive Oxygen Species: [3N1S] Is the Right Donor Set. Chemistry 2023. [DOI: 10.1002/chem.202300442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- Kyangwi P. Malikidogo
- LCC–CNRS Université de Toulouse, CNRS 31400 Toulouse France
- Université Grenoble Alpes DCM (UMR 5250)–CNRS and CEA, IRIG, LCBM (UMR 5249) Grenoble France
| | | | - Elena Atrián‐Blasco
- LCC–CNRS Université de Toulouse, CNRS 31400 Toulouse France
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
| | - Jan Hormann
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstr. 34/36 14195 Berlin Germany
| | - Nora Kulak
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstr. 34/36 14195 Berlin Germany
- Institut für Chemie Otto-von-Guericke-Universität Magdeburg Universitätsplatz 2 39106 Magdeburg Germany
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Drommi M, Rulmont C, Esmieu C, Hureau C. Hybrid Bis-Histidine Phenanthroline-Based Ligands to Lessen Aβ-Bound Cu ROS Production: An Illustration of Cu(I) Significance. Molecules 2021; 26:7630. [PMID: 34946712 PMCID: PMC8707446 DOI: 10.3390/molecules26247630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/10/2021] [Indexed: 11/23/2022] Open
Abstract
We here report the synthesis of three new hybrid ligands built around the phenanthroline scaffold and encompassing two histidine-like moieties: phenHH, phenHGH and H'phenH', where H correspond to histidine and H' to histamine. These ligands were designed to capture Cu(I/II) from the amyloid-β peptide and to prevent the formation of reactive oxygen species produced by amyloid-β bound copper in presence of physiological reductant (e.g., ascorbate) and dioxygen. The amyloid-β peptide is a well-known key player in Alzheimer's disease, a debilitating and devasting neurological disorder the mankind has to fight against. The Cu-Aβ complex does participate in the oxidative stress observed in the disease, due to the redox ability of the Cu(I/II) ions. The complete characterization of the copper complexes made with phenHH, phenHGH and H'phenH' is reported, along with the ability of ligands to remove Cu from Aβ, and to prevent the formation of reactive oxygen species catalyzed by Cu and Cu-Aβ, including in presence of zinc, the second metal ions important in the etiology of Alzheimer's disease. The importance of the reduced state of copper, Cu(I), in the prevention and arrest of ROS is mechanistically described with the help of cyclic voltammetry experiments.
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Affiliation(s)
| | | | | | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France; (M.D.); (C.R.); (C.E.)
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Martini G, Vitangeli L, Assennato P, Drommi M. [Problems and techniques of functional rehabilitation of upper limb stump]. Clin Ter 1990; 134:13-24. [PMID: 2147604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The authors discuss problems and techniques of rehabilitation in subjects who have undergone upper limb amputation, as well as the requirements for good application of a prosthesis. Various types of prostheses are described: passive ones, those moved by the body and externally operated ones. The amputee undergoes three stages of rehabilitation: a general preparatory phase for maintenance of good joint function and muscle efficiency; a phase of specific rehabilitation with the help of electromyometry and an electronic training device for the use of the prosthesis, and finally individual and group exercises in laboratories with special facilities.
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Affiliation(s)
- G Martini
- Istituto di Clinica Ortopedica, Università degli Studi di Roma La Sapienza
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