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Chiarinelli J, Casavola AR, Castrovilli MC, Bolognesi P, Cartoni A, Wang F, Richter R, Catone D, Tosic S, Marinkovic BP, Avaldi L. Radiation Damage Mechanisms of Chemotherapeutically Active Nitroimidazole Derived Compounds. Front Chem 2019; 7:329. [PMID: 31157205 PMCID: PMC6528692 DOI: 10.3389/fchem.2019.00329] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/24/2019] [Indexed: 11/15/2022] Open
Abstract
Photoionization mass spectrometry, photoelectron-photoion coincidence spectroscopic technique, and computational methods have been combined to investigate the fragmentation of two nitroimidazole derived compounds: the metronidazole and misonidazole. These molecules are used in radiotherapy thanks to their capability to sensitize hypoxic tumor cells to radiation by "mimicking" the effects of the presence of oxygen as a damaging agent. Previous investigations of the fragmentation patterns of the nitroimidazole isomers (Bolognesi et al., 2016; Cartoni et al., 2018) have shown their capacity to produce reactive molecular species such as nitric oxide, carbon monoxide or hydrogen cyanide, and their potential impact on the biological system. The results of the present work suggest that different mechanisms are active for the more complex metronidazole and misonidazole molecules. The release of nitric oxide is hampered by the efficient formation of nitrous acid or nitrogen dioxide. Although both metronidazole and misonidazole contain imidazole ring in the backbone, the side branches of these molecules lead to very different bonding mechanisms and properties.
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Affiliation(s)
- Jacopo Chiarinelli
- CNR-Istituto di Struttura Della Materia (CNR-ISM), Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
- Dipartimento di Scienze, Università di Roma Tre, Rome, Italy
| | - Anna Rita Casavola
- CNR-Istituto di Struttura Della Materia (CNR-ISM), Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
| | - Mattea Carmen Castrovilli
- CNR-Istituto di Struttura Della Materia (CNR-ISM), Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
| | - Paola Bolognesi
- CNR-Istituto di Struttura Della Materia (CNR-ISM), Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
| | - Antonella Cartoni
- CNR-Istituto di Struttura Della Materia (CNR-ISM), Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
- Dipartimento di Chimica, Sapienza Università di Roma, Rome, Italy
| | - Feng Wang
- Molecular Modelling Discovery Laboratory, Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, VIC, Australia
| | - R. Richter
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - Daniele Catone
- CNR-Istituto di Struttura Della Materia, Area della Ricerca di Tor Vergata, Rome, Italy
| | - Sanja Tosic
- Institute of Physics, Laboratory for Atomic Collision Processes, University of Belgrade, Belgrade, Serbia
| | - Bratislav P. Marinkovic
- Institute of Physics, Laboratory for Atomic Collision Processes, University of Belgrade, Belgrade, Serbia
| | - Lorenzo Avaldi
- CNR-Istituto di Struttura Della Materia (CNR-ISM), Area della Ricerca di Roma 1, Monterotondo Scalo, Italy
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