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Degner A, Arora R, Erber L, Chao C, Peterson LA, Tretyakova NY. Interindividual Differences in DNA Adduct Formation and Detoxification of 1,3-Butadiene-Derived Epoxide in Human HapMap Cell Lines. Chem Res Toxicol 2020; 33:1698-1708. [PMID: 32237725 PMCID: PMC8177104 DOI: 10.1021/acs.chemrestox.9b00517] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Smoking-induced lung cancer is a major cause of cancer mortality in the US and worldwide. While 11-24% of smokers will develop lung cancer, risk varies among individuals and ethnic/racial groups. Specifically, African American and Native Hawaiian cigarette smokers are more likely to get lung cancer as compared to Caucasians, Japanese Americans, and Latinos. It is important to identify smokers who are at the greatest risk of developing lung cancer as they should be candidates for smoking cessation and chemopreventive intervention programs. Among 60+ tobacco smoke carcinogens, 1,3-butadiene (BD) is one of the most potent and abundant (20-75 μg per cigarette in mainstream smoke and 205-361 μg per cigarette in side stream smoke). BD is metabolically activated to 3,4-epoxy-1-butene (EB), which can be detoxified by glutathione S-transferase theta 1 (GSTT1)-mediated conjugation with glutathione, or can react with DNA to form 7-(1-hydroxy-3-buten-2-yl)guanine (EB-GII) adducts. In the present study, we employed EBV-transformed human lymphoblastoid cell lines (HapMap cells) with known GSTT1 genotypes to examine the influence of the GSTT1 gene on interindividual variability in butadiene metabolism, DNA adduct formation/repair, and biological outcomes (apoptosis). We found that GSTT1- HapMap cells treated with EB in culture produced lower levels of glutathione conjugates and were more susceptible to apoptosis but had similar numbers of EB-GII adducts as GSTT1+ cells. Our results suggest that GSTT1 can influence an individual's susceptibility to butadiene-derived epoxides.
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Affiliation(s)
- Amanda Degner
- University of Minnesota Department of Medicinal Chemistry, Minneapolis, MN 55455
- University of Minnesota Masonic Cancer Center, Minneapolis, MN 55455
| | - Rashi Arora
- University of Minnesota Masonic Cancer Center, Minneapolis, MN 55455
| | - Luke Erber
- University of Minnesota Department of Medicinal Chemistry, Minneapolis, MN 55455
- University of Minnesota Masonic Cancer Center, Minneapolis, MN 55455
| | - Christopher Chao
- University of Minnesota Department of Medicinal Chemistry, Minneapolis, MN 55455
- University of Minnesota Masonic Cancer Center, Minneapolis, MN 55455
| | - Lisa A. Peterson
- University of Minnesota Masonic Cancer Center, Minneapolis, MN 55455
- Division of Environmental Health Sciences, University of MN, Minneapolis, MN 55455
| | - Natalia Y. Tretyakova
- University of Minnesota Department of Medicinal Chemistry, Minneapolis, MN 55455
- University of Minnesota Masonic Cancer Center, Minneapolis, MN 55455
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Chang SC, Seneviratne UI, Wu J, Tretyakova N, Essigmann JM. 1,3-Butadiene-Induced Adenine DNA Adducts Are Genotoxic but Only Weakly Mutagenic When Replicated in Escherichia coli of Various Repair and Replication Backgrounds. Chem Res Toxicol 2017; 30:1230-1239. [PMID: 28394575 PMCID: PMC5512570 DOI: 10.1021/acs.chemrestox.7b00064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The adverse effects of the human carcinogen 1,3-butadiene (BD) are believed to be mediated by its DNA-reactive metabolites such as 3,4-epoxybut-1-ene (EB) and 1,2,3,4-diepoxybutane (DEB). The specific DNA adducts responsible for toxic and mutagenic effects of BD, however, have yet to be identified. Recent in vitro polymerase bypass studies of BD-induced adenine (BD-dA) adducts show that DEB-induced N6,N6-DHB-dA (DHB = 2,3-dihydroxybutan-1,4-diyl) and 1,N6-γ-HMHP-dA (HMHP = 2-hydroxy-3-hydroxymethylpropan-1,3-diyl) adducts block replicative DNA polymerases but are bypassed by human polymerases η and κ, leading to point mutations and deletions. In contrast, EB-induced N6-HB-dA (HB = 2-hydroxy-3-buten-1-yl) does not block DNA synthesis and is nonmutagenic. In the present study, we employed a newly established in vivo lesion-induced mutagenesis/genotoxicity assay via next-generation sequencing to evaluate the in vivo biological consequences of S-N6-HB-dA, R,R-N6,N6-DHB-dA, S,S-N6,N6-DHB-dA, and R,S-1,N6-γ-HMHP-dA. In addition, the effects of AlkB-mediated direct reversal repair, MutM and MutY catalyzed base excision repair, and DinB translesion synthesis on the BD-dA adducts in bacterial cells were investigated. BD-dA adducts showed the expected inhibition of DNA replication in vivo but were not substantively mutagenic in any of the genetic environments investigated. This result is in contrast with previous in vitro observations and opens the possibility that E. coli repair and bypass systems other than the ones studied here are able to minimize the mutagenic properties of BD-dA adducts.
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Affiliation(s)
- Shiou-chi Chang
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Uthpala I. Seneviratne
- Department of Medicinal Chemistry, and the Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - Jie Wu
- BioMicro Center, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Natalia Tretyakova
- Department of Medicinal Chemistry, and the Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455
| | - John M. Essigmann
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139
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Liu LY, Zheng J, Kong C, An J, Yu YX, Zhang XY, Elfarra AA. Characterization of the Major Purine and Pyrimidine Adducts Formed after Incubations of 1-Chloro-3-buten-2-one with Single-/Double-Stranded DNA and Human Cells. Chem Res Toxicol 2016; 30:552-563. [PMID: 27977153 DOI: 10.1021/acs.chemrestox.6b00282] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have previously shown that 1-chloro-3-buten-2-one (CBO), a potential reactive metabolite of 1,3-butadiene (BD), exhibits potent cytotoxicity and genotoxicity that have been attributed in part to its reactivity toward DNA. In an effort to identify the DNA adducts of CBO, we characterized the CBO reactions with 2'-deoxyguanosine (dG), 2'-deoxycytidine (dC), and 2'-deoxyadenosine (dA) under in vitro physiological conditions (pH 7.4, 37 °C). In the present study, we investigated the CBO reaction with 2'-deoxythymidine (dT) and compared the rate constants of the reactions of CBO with dA, dC, dG, and dT at both individual- and mixed-nucleosides levels. We also investigated the reactions of CBO with single- and double-stranded DNA using HPLC with UV detection after adducts were released by either acid or enzymatic hydrolysis of DNA. Consistent with the results from the nucleoside reactions and the rate constant experiments, 1,N6-(1-hydroxy-1-chloromethylpropan-1,3-diyl)adenine (A-2D) was identified as the major DNA adduct detected after acid hydrolysis, followed by N7-(4-chloro-3-oxobutyl)guanine (CG-2H) and a small amount of 1,N6-(1-hydroxy-1-hydroxymethylpropan-1,3-diyl)adenine (A-1D). After enzymatic hydrolysis, 1,N6-(1-hydroxy-1-hydroxymethylpropan-1,3-diyl)-2'-dexoyadenosine (dA-1), 3,N4-(1-hydroxy-1-hydroxymethylpropan-1,3-diyl)-2'-deoxycytidine (dC-1/2), and 1,N2-(3-hydroxy-3-hydroxymethylpropan-1,3-diyl)-2'-dexoyguanosine (CG-1) were detected, with dA-1 being the major product, followed by dC-1/2. When a nontoxic concentration of CBO (1 μM) was incubated with HepG2 cells, no adducts could be detected by LC-MS. However, pretreatment of cells with l-buthionine sulfoximine to deplete GSH levels allowed A-2D to be consistently detected in cellular DNA. These results may contribute to a better understanding of the role of the DNA adducts in CBO genotoxicity and mutagenicity. It also suggests that A-2D could be developed as a biomarker of CBO formation after BD exposure in vivo.
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Affiliation(s)
- Ling-Yan Liu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Jin Zheng
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Cong Kong
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Shanghai 200090, China
| | - Jing An
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Ying-Xin Yu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Xin-Yu Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Adnan A Elfarra
- Department of Comparative Biosciences and the Molecular and Environmental Toxicology Center, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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Wickramaratne S, Banda DM, Ji S, Manlove AH, Malayappan B, Nuñez NN, Samson L, Campbell C, David SS, Tretyakova N. Base Excision Repair of N 6-Deoxyadenosine Adducts of 1,3-Butadiene. Biochemistry 2016; 55:6070-6081. [PMID: 27552084 DOI: 10.1021/acs.biochem.6b00553] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The important industrial and environmental carcinogen 1,3-butadiene (BD) forms a range of adenine adducts in DNA, including N6-(2-hydroxy-3-buten-1-yl)-2'-deoxyadenosine (N6-HB-dA), 1,N6-(2-hydroxy-3-hydroxymethylpropan-1,3-diyl)-2'-deoxyadenosine (1,N6-HMHP-dA), and N6,N6-(2,3-dihydroxybutan-1,4-diyl)-2'-deoxyadenosine (N6,N6-DHB-dA). If not removed prior to DNA replication, these lesions can contribute to A → T and A → G mutations commonly observed following exposure to BD and its metabolites. In this study, base excision repair of BD-induced 2'-deoxyadenosine (BD-dA) lesions was investigated. Synthetic DNA duplexes containing site-specific and stereospecific (S)-N6-HB-dA, (R,S)-1,N6-HMHP-dA, and (R,R)-N6,N6-DHB-dA adducts were prepared by a postoligomerization strategy. Incision assays with nuclear extracts from human fibrosarcoma (HT1080) cells have revealed that BD-dA adducts were recognized and cleaved by a BER mechanism, with the relative excision efficiency decreasing in the following order: (S)-N6-HB-dA > (R,R)-N6,N6-DHB-dA > (R,S)-1,N6-HMHP-dA. The extent of strand cleavage at the adduct site was decreased in the presence of BER inhibitor methoxyamine and by competitor duplexes containing known BER substrates. Similar strand cleavage assays conducted using several eukaryotic DNA glycosylases/lyases (AAG, Mutyh, hNEIL1, and hOGG1) have failed to observe correct incision products at the BD-dA lesion sites, suggesting that a different BER enzyme may be involved in the removal of BD-dA adducts in human cells.
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Affiliation(s)
- Susith Wickramaratne
- Masonic Cancer Center and Departments of Chemistry and Medicinal Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Douglas M Banda
- Department of Chemistry, University of California , Davis, California 95616, United States
| | - Shaofei Ji
- Masonic Cancer Center and Departments of Chemistry and Medicinal Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Amelia H Manlove
- Department of Chemistry, University of California , Davis, California 95616, United States
| | - Bhaskar Malayappan
- Masonic Cancer Center and Departments of Chemistry and Medicinal Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Nicole N Nuñez
- Department of Chemistry, University of California , Davis, California 95616, United States
| | - Leona Samson
- Division of Biological Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Colin Campbell
- Department of Pharmacology, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Sheila S David
- Department of Chemistry, University of California , Davis, California 95616, United States
| | - Natalia Tretyakova
- Masonic Cancer Center and Departments of Chemistry and Medicinal Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
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Kotapati S, Wickramaratne S, Esades A, Boldry EJ, Quirk Dorr D, Pence MG, Guengerich FP, Tretyakova NY. Polymerase Bypass of N(6)-Deoxyadenosine Adducts Derived from Epoxide Metabolites of 1,3-Butadiene. Chem Res Toxicol 2015; 28:1496-507. [PMID: 26098310 DOI: 10.1021/acs.chemrestox.5b00166] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
N(6)-(2-Hydroxy-3-buten-1-yl)-2'-deoxyadenosine (N(6)-HB-dA I) and N(6),N(6)-(2,3-dihydroxybutan-1,4-diyl)-2'-deoxyadenosine (N(6),N(6)-DHB-dA) are exocyclic DNA adducts formed upon alkylation of the N(6) position of adenine in DNA by epoxide metabolites of 1,3-butadiene (BD), a common industrial and environmental chemical classified as a human and animal carcinogen. Since the N(6)-H atom of adenine is required for Watson-Crick hydrogen bonding with thymine, N(6)-alkylation can prevent adenine from normal pairing with thymine, potentially compromising the accuracy of DNA replication. To evaluate the ability of BD-derived N(6)-alkyladenine lesions to induce mutations, synthetic oligodeoxynucleotides containing site-specific (S)-N(6)-HB-dA I and (R,R)-N(6),N(6)-DHB-dA adducts were subjected to in vitro translesion synthesis in the presence of human DNA polymerases β, η, ι, and κ. While (S)-N(6)-HB-dA I was readily bypassed by all four enzymes, only polymerases η and κ were able to carry out DNA synthesis past (R,R)-N(6),N(6)-DHB-dA. Steady-state kinetic analyses indicated that all four DNA polymerases preferentially incorporated the correct base (T) opposite (S)-N(6)-HB-dA I. In contrast, hPol β was completely blocked by (R,R)-N(6),N(6)-DHB-dA, while hPol η and κ inserted A, G, C, or T opposite the adduct with similar frequency. HPLC-ESI-MS/MS analysis of primer extension products confirmed that while translesion synthesis past (S)-N(6)-HB-dA I was mostly error-free, replication of DNA containing (R,R)-N(6),N(6)-DHB-dA induced significant numbers of A, C, and G insertions and small deletions. These results indicate that singly substituted (S)-N(6)-HB-dA I lesions are not miscoding, but that exocyclic (R,R)-N(6),N(6)-DHB-dA adducts are strongly mispairing, probably due to their inability to form stable Watson-Crick pairs with dT.
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Affiliation(s)
- Srikanth Kotapati
- †Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Susith Wickramaratne
- †Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Amanda Esades
- †Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Emily J Boldry
- †Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Danae Quirk Dorr
- †Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Matthew G Pence
- ‡Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - F Peter Guengerich
- ‡Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Natalia Y Tretyakova
- †Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
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