|
2
|
Guza R, Kotandeniya D, Murphy K, Dissanayake T, Lin C, Giambasu GM, Lad RR, Wojciechowski F, Amin S, Sturla SJ, Hudson RH, York DM, Jankowiak R, Jones R, Tretyakova NY. Influence of C-5 substituted cytosine and related nucleoside analogs on the formation of benzo[a]pyrene diol epoxide-dG adducts at CG base pairs of DNA. Nucleic Acids Res 2011; 39:3988-4006. [PMID: 21245046 PMCID: PMC3089471 DOI: 10.1093/nar/gkq1341] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 12/17/2010] [Accepted: 12/20/2010] [Indexed: 01/13/2023] Open
Abstract
Endogenous 5-methylcytosine ((Me)C) residues are found at all CG dinucleotides of the p53 tumor suppressor gene, including the mutational 'hotspots' for smoking induced lung cancer. (Me)C enhances the reactivity of its base paired guanine towards carcinogenic diolepoxide metabolites of polycyclic aromatic hydrocarbons (PAH) present in cigarette smoke. In the present study, the structural basis for these effects was investigated using a series of unnatural nucleoside analogs and a representative PAH diolepoxide, benzo[a]pyrene diolepoxide (BPDE). Synthetic DNA duplexes derived from a frequently mutated region of the p53 gene (5'-CCCGGCACCC GC[(15)N(3),(13)C(1)-G]TCCGCG-3', + strand) were prepared containing [(15)N(3), (13)C(1)]-guanine opposite unsubstituted cytosine, (Me)C, abasic site, or unnatural nucleobase analogs. Following BPDE treatment and hydrolysis of the modified DNA to 2'-deoxynucleosides, N(2)-BPDE-dG adducts formed at the [(15)N(3), (13)C(1)]-labeled guanine and elsewhere in the sequence were quantified by mass spectrometry. We found that C-5 alkylcytosines and related structural analogs specifically enhance the reactivity of the base paired guanine towards BPDE and modify the diastereomeric composition of N(2)-BPDE-dG adducts. Fluorescence and molecular docking studies revealed that 5-alkylcytosines and unnatural nucleobase analogs with extended aromatic systems facilitate the formation of intercalative BPDE-DNA complexes, placing BPDE in a favorable orientation for nucleophilic attack by the N(2) position of guanine.
Collapse
MESH Headings
- 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide/analogs & derivatives
- 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide/chemistry
- Base Pairing
- Chromatography, High Pressure Liquid
- Cytosine/analogs & derivatives
- DNA Adducts/chemistry
- Deoxyguanosine/analogs & derivatives
- Deoxyguanosine/chemistry
- Genes, p53
- Guanine/chemistry
- Isotope Labeling
- Models, Molecular
- Oligodeoxyribonucleotides/chemical synthesis
- Oligodeoxyribonucleotides/chemistry
- Spectrometry, Fluorescence
- Spectrometry, Mass, Electrospray Ionization
- Tandem Mass Spectrometry
Collapse
Affiliation(s)
- Rebecca Guza
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Delshanee Kotandeniya
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Kristopher Murphy
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Thakshila Dissanayake
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Chen Lin
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - George Madalin Giambasu
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Rahul R. Lad
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Filip Wojciechowski
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Shantu Amin
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Shana J. Sturla
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Robert H.E. Hudson
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Darrin M. York
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Ryszard Jankowiak
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Roger Jones
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Natalia Y. Tretyakova
- Department of Medicinal Chemistry and the Masonic Cancer Center, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Chemistry, Kansas State University, Manhattan, KS 66505, USA, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland, Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, Department of Chemistry, Pennsylvania State University and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| |
Collapse
|