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Kirsanov K, Fetisov T, Antoshina E, Trukhanova L, Gor'kova T, Vlasova O, Khitrovo I, Lesovaya E, Kulbachevskaya N, Shcherbakova T, Belitsky G, Yakubovskaya M, Švedas V, Nilov D. Toxicological Properties of 7-Methylguanine, and Preliminary Data on its Anticancer Activity. Front Pharmacol 2022; 13:842316. [PMID: 35873588 PMCID: PMC9299380 DOI: 10.3389/fphar.2022.842316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
7-Methylguanine (7-MG) competitively inhibits the DNA repair enzyme poly(ADP-ribose) polymerase (PARP) and RNA-modifying enzyme tRNA-guanine transglycosylase (TGT) and represents a potential anticancer drug candidate. Furthermore, as a natural compound, it could escape the serious side effects characteristic for approved synthetic PARP inhibitors. Here we present a comprehensive study of toxicological and carcinogenic properties of 7-MG. It was demonstrated that 7-MG does not induce mutations or structural chromosomal abnormalities, and has no blastomogenic activity. A treatment regimen with 7-MG has been established in mice (50 mg/kg per os, 3 times per week), exerting no adverse effects or changes in morphology. Preliminary data on the 7-MG anticancer activity obtained on transplantable tumor models support our conclusions that 7-MG can become a promising new component of chemotherapy.
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Affiliation(s)
- Kirill Kirsanov
- Blokhin Cancer Research Center, Moscow, Russia.,Peoples' Friendship University of Russia, Moscow, Russia
| | | | | | | | | | | | | | - Ekaterina Lesovaya
- Blokhin Cancer Research Center, Moscow, Russia.,Pavlov Ryazan State Medical University, Ryazan, Russia
| | | | - Tatiana Shcherbakova
- Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | | | | | - Vytas Švedas
- Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, Moscow, Russia.,Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russia
| | - Dmitry Nilov
- Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, Moscow, Russia
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