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Natalia Loktionova
Title Assistant Professor
Institution College of Medicine
Department Cellular and Molecular Physiology
Address 500 University Drive Hershey PA 17033
Mailbox: H166
Telephone 7175316987
Email
Background
PREFERRED TITLE/ROLE:

Assistant Professor of Cellular and Molecular Physiology

EDUCATION:

Ph.D. in Biology, Institute of Toxicology, St. Petersburg, Russia, 1987
Publications
1. Chuk MK, Cole DE, McCully C, Loktionova NA, Pegg AE, Parker RJ, Pauly G, Widemann BC, Balis FM, Fox E. Plasma and CNS pharmacokinetics of O4-benzylfolic acid (O4BF) and metabolite in a non-human primate model. Cancer Chemother Pharmacol. 2011 Jun; 67(6):1291-7.
  View in: PubMed
 
2. Kalapila AG, Loktionova NA, Pegg AE. Effect of O6-alkylguanine-DNA alkyltransferase on genotoxicity of epihalohydrins. Environ Mol Mutagen. 2009 Jul; 50(6):502-14.
  View in: PubMed
 
3. Larochelle A, Choi U, Shou Y, Naumann N, Loktionova NA, Clevenger JR, Krouse A, Metzger M, Donahue RE, Kang E, Stewart C, Persons D, Malech HL, Dunbar CE, Sorrentino BP. In vivo selection of hematopoietic progenitor cells and temozolomide dose intensification in rhesus macaques through lentiviral transduction with a drug resistance gene. J Clin Invest. 2009 Jul; 119(7):1952-63.
  View in: PubMed
 
4. Philip S, Swaminathan S, Kuznetsov SG, Kanugula S, Biswas K, Chang S, Loktionova NA, Haines DC, Kaldis P, Pegg AE, Sharan SK. Degradation of BRCA2 in alkyltransferase-mediated DNA repair and its clinical implications. Cancer Res. 2008 Dec 1; 68(23):9973-81.
  View in: PubMed
 
5. Pauly GT, Loktionova NA, Fang Q, Vankayala SL, Guida WC, Pegg AE. Substitution of aminomethyl at the meta-position enhances the inactivation of O6-alkylguanine-DNA alkyltransferase by O6-benzylguanine. J Med Chem. 2008 Nov 27; 51(22):7144-53.
  View in: PubMed
 
6. Kalapila AG, Loktionova NA, Pegg AE. Alkyltransferase-mediated toxicity of 1,3-butadiene diepoxide. Chem Res Toxicol. 2008 Sep; 21(9):1851-61.
  View in: PubMed
 
7. Fang Q, Loktionova NA, Moschel RC, Javanmard S, Pauly GT, Pegg AE. Differential inactivation of polymorphic variants of human O6-alkylguanine-DNA alkyltransferase. Biochem Pharmacol. 2008 Feb 1; 75(3):618-26.
  View in: PubMed
 
8. Javanmard S, Loktionova NA, Fang Q, Pauly GT, Pegg AE, Moschel RC. Inactivation of O(6)-alkylguanine-DNA alkyltransferase by folate esters of O(6)-benzyl-2'-deoxyguanosine and of O(6)-[4-(hydroxymethyl)benzyl]guanine. J Med Chem. 2007 Oct 18; 50(21):5193-201.
  View in: PubMed
 
9. Pegg AE, Fang Q, Loktionova NA. Human variants of O6-alkylguanine-DNA alkyltransferase. DNA Repair (Amst). 2007 Aug 1; 6(8):1071-8.
  View in: PubMed
 
10. Mijal RS, Loktionova NA, Vu CC, Pegg AE, Peterson LA. O6-pyridyloxobutylguanine adducts contribute to the mutagenic properties of pyridyloxobutylating agents. Chem Res Toxicol. 2005 Oct; 18(10):1619-25.
  View in: PubMed
 
11. Wei G, Loktionova NA, Pegg AE, Moschel RC. Beta-glucuronidase-cleavable prodrugs of O6-benzylguanine and O6-benzyl-2'-deoxyguanosine. J Med Chem. 2005 Jan 13; 48(1):256-61.
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12. Choi U, DeRavin SS, Yamashita K, Whiting-Theobald N, Linton GF, Loktionova NA, Pegg AE, Malech HL. Nuclear-localizing O6-benzylguanine-resistant GFP-MGMT fusion protein as a novel in vivo selection marker. Exp Hematol. 2004 Aug; 32(8):709-19.
  View in: PubMed
 
13. Nelson ME, Loktionova NA, Pegg AE, Moschel RC. 2-amino-O4-benzylpteridine derivatives: potent inactivators of O6-alkylguanine-DNA alkyltransferase. J Med Chem. 2004 Jul 15; 47(15):3887-91.
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14. Valadez JG, Liu L, Loktionova NA, Pegg AE, Guengerich FP. Activation of bis-electrophiles to mutagenic conjugates by human O6-alkylguanine-DNA alkyltransferase. Chem Res Toxicol. 2004 Jul; 17(7):972-82.
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15. Liu L, Hachey DL, Valadez G, Williams KM, Guengerich FP, Loktionova NA, Kanugula S, Pegg AE. Characterization of a mutagenic DNA adduct formed from 1,2-dibromoethane by O6-alkylguanine-DNA alkyltransferase. J Biol Chem. 2004 Feb 6; 279(6):4250-9.
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16. Loktionova NA, Pegg AE. Interaction of mammalian O(6)-alkylguanine-DNA alkyltransferases with O(6)-benzylguanine. Biochem Pharmacol. 2002 Apr 15; 63(8):1431-42.
  View in: PubMed
 
17. Pegg AE, Goodtzova K, Loktionova NA, Kanugula S, Pauly GT, Moschel RC. Inactivation of human O(6)-alkylguanine-DNA alkyltransferase by modified oligodeoxyribonucleotides containing O(6)-benzylguanine. J Pharmacol Exp Ther. 2001 Mar; 296(3):958-65.
  View in: PubMed
 
18. Pourquier P, Waltman JL, Urasaki Y, Loktionova NA, Pegg AE, Nitiss JL, Pommier Y. Topoisomerase I-mediated cytotoxicity of N-methyl-N'-nitro-N-nitrosoguanidine: trapping of topoisomerase I by the O6-methylguanine. Cancer Res. 2001 Jan 1; 61(1):53-8.
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19. Xu-Welliver M, Kanugula S, Loktionova NA, Crone TM, Pegg AE. Conserved residue lysine165 is essential for the ability of O6-alkylguanine-DNA alkyltransferase to react with O6-benzylguanine. Biochem J. 2000 Apr 15; 347(Pt 2):527-34.
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20. Nutt CL, Loktionova NA, Pegg AE, Chambers AF, Cairncross JG. O(6)-methylguanine-DNA methyltransferase activity, p53 gene status and BCNU resistance in mouse astrocytes. Carcinogenesis. 1999 Dec; 20(12):2361-5.
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21. Loktionova NA, Xu-Welliver M, Crone TM, Kanugula S, Pegg AE. Protection of CHO cells by mutant forms of O6-alkylguanine-DNA alkyltransferase from killing by 1,3-bis-(2-chloroethyl)-1-nitrosourea (BCNU) plus O6-benzylguanine or O6-benzyl-8-oxoguanine. Biochem Pharmacol. 1999 Jul 15; 58(2):237-44.
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22. Friedman HS, Pegg AE, Johnson SP, Loktionova NA, Dolan ME, Modrich P, Moschel RC, Struck R, Brent TP, Ludeman S, Bullock N, Kilborn C, Keir S, Dong Q, Bigner DD, Colvin OM. Modulation of cyclophosphamide activity by O6-alkylguanine-DNA alkyltransferase. Cancer Chemother Pharmacol. 1999; 43(1):80-5.
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23. Loktionova NA, Pegg AE. Point mutations in human O6-alkylguanine-DNA alkyltransferase prevent the sensitization by O6-benzylguanine to killing by N,N'-bis (2-chloroethyl)-N-nitrosourea. Cancer Res. 1996 Apr 1; 56(7):1578-83.
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24. Hall J, Brésil H, Donato F, Wild CP, Loktionova NA, Kazanova OI, Komyakov IP, Lemekhov VG, Likhachev AJ, Montesano R. Alkylation and oxidative-DNA damage repair activity in blood leukocytes of smokers and non-smokers. Int J Cancer. 1993 Jul 9; 54(5):728-33.
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25. Likhachev AJ, Beniashvili DSh, Bykov VJ, Kazanova OI, Loktionova NA, Tyndyk ML, Yatsuk OS, Yermilov VB, Zabezhinski MA. Biomarkers of individual susceptibility to carcinogens: application for biological monitoring. Int Arch Occup Environ Health. 1993; 65(1 Suppl):S155-8.
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26. Loktionova NA, Beniashvili DSh, Sartania MS, Zabezhinski MA, Kazanova OI, Petrov AS, Likhachev AJ. Individual levels of activity of O6-alkylguanine-DNA alkyltransferase in monkey gastric mucosa during chronic exposure to a gastrocarcinogen N-ethyl-N'-nitro-N-nitrosoguanidine. Biochimie. 1993; 75(9):821-4.
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27. Loktionova NA, Beniashvili DSh, Zabezhinskii MA, Kazanova OI, Petrov AS, Likhachev AIa. [The individual characteristics of the activity of the DNA-repair enzyme O(6)-alkylguanine-DNA alkyltransferase in the stomach of monkeys exposed to the gastric carcinogen N-ethyl-N1-nitro-N-nitrosoguanidine]. Vopr Onkol. 1992; 38(8):961-8.
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Co-Authors  
Kanugula, Sreenivas
Pegg, Anthony
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