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Audran G, Blyth MT, Coote ML, Gescheidt G, Hardy M, Havot J, Holzritter M, Jacoutot S, Joly JP, Marque SRA, Koumba TMM, Neshchadin D, Vaiedelich E. Homolysis/mesolysis of alkoxyamines activated by chemical oxidation and photochemical-triggered radical reactions at room temperature. Org Chem Front 2021. [DOI: 10.1039/d1qo01276b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Instantaneous and spontaneous room temperature C–ON bond mesolysis of alkoxyamines triggered by chemical oxidation.
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Affiliation(s)
- Gérard Audran
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Mitchell T. Blyth
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Michelle L. Coote
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Georg Gescheidt
- Institute of Physical and Theoretical Chemistry, TU Graz, Stremayrgasse 9/Z2, A-8010 Graz, Austria
| | - Micael Hardy
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Jeffrey Havot
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Maxence Holzritter
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Samuel Jacoutot
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Jean-Patrick Joly
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Sylvain R. A. Marque
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | | | - Dmytro Neshchadin
- Institute of Physical and Theoretical Chemistry, TU Graz, Stremayrgasse 9/Z2, A-8010 Graz, Austria
| | - Enzo Vaiedelich
- Aix Marseille Univ, CNRS, ICR, UMR 7273, Case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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Polyakov N, Leshina T, Fedenok L, Slepneva I, Kirilyuk I, Furso J, Olchawa M, Sarna T, Elas M, Bilkis I, Weiner L. Redox-Active Quinone Chelators: Properties, Mechanisms of Action, Cell Delivery, and Cell Toxicity. Antioxid Redox Signal 2018; 28:1394-1403. [PMID: 29161882 DOI: 10.1089/ars.2017.7406] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
SIGNIFICANCE Chemotherapy is currently the principal method for treating many malignancies. Thus, the development of improved antitumor drugs with enhanced efficacy and selectivity remains a high priority. Recent Advances: Anthracycline antibiotics (AAs), for example, doxorubicin, daunomycin, and mitomycin C, belong to an important family of antitumor agents widely used in chemotherapy. These compounds are all quinones. They are, thus, capable of being reduced by appropriate chemicals or reductases. One of their important properties is that under aerobic conditions their reduced forms undergo oxidation, with concomitant generation of reactive oxygen species (ROS), namely, superoxide anion radicals, hydrogen peroxide, and hydroxyl radicals. The presence of metal ions is essential for the generation of ROS by AAs in biological systems. CRITICAL ISSUES A fundamental shortcoming of the AAs is their high cardiotoxicity. We have proposed, and experimentally realized, a new type of quinones that is capable of coordinating metal ions. We have demonstrated in vitro that they can be reduced by electron transfer chains and glutathione with concomitant generation of ROS. They can also produce ROS under photo-excitation. The mechanisms of these reactions have been characterized by using nuclear magnetic resonance and electron paramagnetic resonance. FUTURE DIRECTIONS To enhance their therapeutic effectiveness, and decrease cardiotoxicity and other side effects, we intend to conjugate the quinone chelators with monoclonal antibodies and peptide hormones that are specifically targeted to receptors on the cancer cell surface. Some such candidates have already been synthesized. An alternative approach for delivery of our compounds involves the use of specific peptide-based nanoparticles. In addition, our novel approach for treating malignancies is also suitable for photodynamic therapy. Antioxid. Redox Signal. 28, 1394-1403.
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Affiliation(s)
- Nikolay Polyakov
- 1 Institute of Chemical Kinetics and Combustion , Novosibirsk, Russia
| | - Tatyana Leshina
- 1 Institute of Chemical Kinetics and Combustion , Novosibirsk, Russia
| | - Lidiya Fedenok
- 1 Institute of Chemical Kinetics and Combustion , Novosibirsk, Russia
| | - Irina Slepneva
- 1 Institute of Chemical Kinetics and Combustion , Novosibirsk, Russia
| | - Igor Kirilyuk
- 2 Laboratory of Nitrogen Compounds, Novosibirsk Institute of Organic Chemistry , Novosibirsk, Russia
| | - Justyna Furso
- 3 Department of Biophysics, Jagiellonian University , Kraków, Poland
| | - Magdalena Olchawa
- 3 Department of Biophysics, Jagiellonian University , Kraków, Poland
| | - Tadeusz Sarna
- 3 Department of Biophysics, Jagiellonian University , Kraków, Poland
| | - Martyna Elas
- 3 Department of Biophysics, Jagiellonian University , Kraków, Poland
| | - Itzhak Bilkis
- 4 Institute of Biochemistry, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem , Rehovot, Israel
| | - Lev Weiner
- 5 Department of Neurobiology, Faculty of Biology, Weizmann Institute of Science , Rehovot, Israel
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Abstract
Abstract
The role of metal ions in the mechanism of light-stimulated redox activity of potential anticancer agent 2-phenyl-4-(butylamino)naphtha[2,3-h]quinoline-7,12-dione (Qc) has been studied by CIDNP (chemically induced dynamic nuclear polarization) and EPR methods. The photo-induced oxidation of NADH and its synthetic analog – substituted dihydropyridine (DHP) – by quinone Qc was used as a model. The Qc capability of producing chelating complexes with divalent metal ions of Fe, Zn and Ca was studied quantitatively by optical absorption spectroscopy. A significant decrease of electrochemical reduction potential of Qc (ΔE=0.4−0.6 eV for ACN and ACN/PBS solutions) in chelating complexes and in protonated form of Qc was observed. A pronounced increase in efficiency of DHP oxidation in chelating complexes with Zn2+ and Ca2+ ions compared with free Qc was demonstrated. The yields of free radicals, including reactive oxygen species (ROS) and reaction products, were a few times higher than those in the absence of metal ions. Application of such chelating compounds to enhance ROS generation looks very promising for anti-cancer therapy, including the photodynamic therapy.
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Timoshnikov V, Klimentiev V, Polyakov N, Kontoghiorghes G. Photoinduced transformation of iron chelator deferiprone: Possible implications in drug metabolism and toxicity. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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