1
|
Hurben AK, Zhang Q, Galligan JJ, Tretyakova N, Erber L. Endogenous Cellular Metabolite Methylglyoxal Induces DNA-Protein Cross-Links in Living Cells. ACS Chem Biol 2024; 19:1291-1302. [PMID: 38752800 DOI: 10.1021/acschembio.4c00100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Methylglyoxal (MGO) is an electrophilic α-oxoaldehyde generated endogenously through metabolism of carbohydrates and exogenously due to autoxidation of sugars, degradation of lipids, and fermentation during food and drink processing. MGO can react with nucleophilic sites within proteins and DNA to form covalent adducts. MGO-induced advanced glycation end-products such as protein and DNA adducts are thought to be involved in oxidative stress, inflammation, diabetes, cancer, renal failure, and neurodegenerative diseases. Additionally, MGO has been hypothesized to form toxic DNA-protein cross-links (DPC), but the identities of proteins participating in such cross-linking in cells have not been determined. In the present work, we quantified DPC formation in human cells exposed to MGO and identified proteins trapped on DNA upon MGO exposure using mass spectrometry-based proteomics. A total of 265 proteins were found to participate in MGO-derived DPC formation including gene products engaged in telomere organization, nucleosome assembly, and gene expression. In vitro experiments confirmed DPC formation between DNA and glyceraldehyde-3-phosphate dehydrogenase (GAPDH), as well as histone proteins H3.1 and H4. Collectively, our study provides the first evidence for MGO-mediated DNA-protein cross-linking in living cells, prompting future studies regarding the relevance of these toxic lesions in cancer, diabetes, and other diseases linked to elevated MGO levels.
Collapse
Affiliation(s)
- Alexander K Hurben
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Qi Zhang
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - James J Galligan
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, Arizona 85721, United States
| | - Natalia Tretyakova
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Luke Erber
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
2
|
Iglesias BA, Peranzoni NP, Faria SI, Trentin LB, Schuch AP, Chaves OA, Bertoloni RR, Nikolaou S, de Oliveira KT. DNA-Interactive and Damage Study with meso-Tetra(2-thienyl)porphyrins Coordinated with Polypyridyl Pd(II) and Pt(II) Complexes. Molecules 2023; 28:5217. [PMID: 37446879 DOI: 10.3390/molecules28135217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/17/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
We report the DNA-binding properties of three porphyrins with peripheral thienyl substituents (TThPor, PdTThPor and PtTThPor). The binding capacity of each porphyrin with DNA was determined by UV-Vis and steady-state fluorescence emission spectroscopy combined with molecular docking calculations. The results suggest that the interaction of these compounds probably occurs via secondary interactions via external grooves (minor grooves) around the DNA macromolecule. Moreover, porphyrins containing peripheral Pd(II) or Pt(II) complexes (PdTThPor and PtTThPor) were able to promote photo-damage in the DNA.
Collapse
Affiliation(s)
- Bernardo Almeida Iglesias
- Bioinorganic and Porphyrinoids Materials Laboratory, Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria 97105-900, RS, Brazil
| | - Níckolas Pippi Peranzoni
- Laboratory of Photobiology, Department of Biochemistry and Molecular Biology, Federal University of Santa Maria (UFSM), Santa Maria 97105-900, RS, Brazil
| | - Sophia Iwersen Faria
- Laboratory of Photobiology, Department of Biochemistry and Molecular Biology, Federal University of Santa Maria (UFSM), Santa Maria 97105-900, RS, Brazil
| | - Luana Belo Trentin
- Laboratory of Photobiology, Department of Biochemistry and Molecular Biology, Federal University of Santa Maria (UFSM), Santa Maria 97105-900, RS, Brazil
| | - André Passaglia Schuch
- Laboratory of Photobiology, Department of Biochemistry and Molecular Biology, Federal University of Santa Maria (UFSM), Santa Maria 97105-900, RS, Brazil
| | - Otávio Augusto Chaves
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Renan Ribeiro Bertoloni
- Laboratory of Biological Activity and Supramolecular Chemical of Coordination Compounds (LABiQSC2), Department of Chemistry, FFCLRP, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil
| | - Sofia Nikolaou
- Laboratory of Biological Activity and Supramolecular Chemical of Coordination Compounds (LABiQSC2), Department of Chemistry, FFCLRP, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil
| | - Kleber Thiago de Oliveira
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, São Carlos 13565-905, SP, Brazil
| |
Collapse
|
3
|
Ming X, Michaelson-Richie ED, Groehler AS, Villalta PW, Campbell C, Tretyakova NY. Cross-linking of the DNA repair protein O 6-alkylguanine DNA alkyltransferase to DNA in the presence of cisplatin. DNA Repair (Amst) 2020; 89:102840. [PMID: 32283495 DOI: 10.1016/j.dnarep.2020.102840] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/09/2020] [Accepted: 03/13/2020] [Indexed: 12/23/2022]
Abstract
1,1,2,2-cis-diamminedichloroplatinum (II) (cisplatin) is a chemotherapeutic agent widely used in the clinic to treat various cancers. The antitumor activity of cisplatin is generally attributed to its ability to form intrastrand and interstrand DNA-DNA cross-links via sequential platination of two nucleophilic sites within the DNA duplex. However, cisplatin also induces DNA- protein lesions (DPCs) that may contribute to its biological effects due to their ability to block DNA replication and transcription. We previously reported that over 250 nuclear proteins including high mobility group proteins, histone proteins, and elongation factors formed DPCs in human HT1080 cells treated with cisplatin (Ming et al. Chem. Res. Toxicol. 2017, 30, 980-995). Interestingly, cisplatin-induced DNA-protein conjugates were reversed upon heating, by an unknown mechanism. In the present work, DNA repair protein O6-alkylguanine DNA alkyltransferase (AGT) was used as a model to investigate the molecular details of cisplatin-mediated DNA-protein cross-linking and to establish the mechanism of their reversal. We found that AGT is readily cross-linked to DNA in the presence of cisplatin. HPLC-ESI+-MS/MS sequencing of tryptic peptides originating from dG-Pt-AGT complexes revealed that the cross-linking occurred at six sites within this protein including Glu110, Lys125, Cys145, His146, Arg147, and Cys150. Cisplatin-induced Lys-Gua cross-links (1,1-cis-diammine-2-(5-amino-5-carboxypentyl)amino-2-(2'-deoxyguanosine-7-yl)-platinum(II) (dG-Pt-Lys) were detected by HPLC-ESI+-MS/MS of total digests of modified protein in comparison with the corresponding authentic standard. Upon heating, dG-Pt-AGT complexes were subject to platination migration from protein to DNA, forming cis-[Pt(NH3)2{d(GpG)}] cross-links which were detected by HPLC-ESI+-MS/MS. Our results provide a new insight into the mechanism of cisplatin-mediated DNA-protein cross-linking and their dynamic equilibrium with the corresponding DNA-DNA lesions.
Collapse
Affiliation(s)
- Xun Ming
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Erin D Michaelson-Richie
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Arnold S Groehler
- Center for Genomic Integrity, Institute for Basic Science, Ulsan, Republic of Korea
| | - Peter W Villalta
- Mass Spectrometry Core at the Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Colin Campbell
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Natalia Y Tretyakova
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.
| |
Collapse
|
4
|
Brabec V, Hrabina O, Kasparkova J. Cytotoxic platinum coordination compounds. DNA binding agents. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
5
|
Ming X, Groehler A, Michaelson-Richie ED, Villalta PW, Campbell C, Tretyakova NY. Mass Spectrometry Based Proteomics Study of Cisplatin-Induced DNA-Protein Cross-Linking in Human Fibrosarcoma (HT1080) Cells. Chem Res Toxicol 2017; 30:980-995. [PMID: 28282121 DOI: 10.1021/acs.chemrestox.6b00389] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Platinum-based antitumor drugs such as 1,1,2,2-cis-diamminedichloroplatinum(II) (cisplatin), carboplatin, and oxaliplatin are currently used to treat nearly 50% of all cancer cases, and novel platinum based agents are under development. The antitumor effects of cisplatin and other platinum compounds are attributed to their ability to induce interstrand DNA-DNA cross-links, which are thought to inhibit tumor cell growth by blocking DNA replication and/or preventing transcription. However, platinum agents also induce significant numbers of unusually bulky and helix-distorting DNA-protein cross-links (DPCs), which are poorly characterized because of their unusual complexity. We and others have previously shown that DPCs block DNA replication and transcription and causes toxicity in human cells, potentially contributing to the biological effects of platinum agents. In the present work, we have undertaken a system-wide investigation of cisplatin-mediated DNA-protein cross-linking in human fibrosarcoma (HT1080) cells using mass spectrometry-based proteomics. DPCs were isolated from cisplatin-treated cells using a modified phenol/chloroform DNA extraction in the presence of protease inhibitors. Proteins were released from DNA strands and identified by mass spectrometry-based proteomics and immunological detection. Over 250 nuclear proteins captured on chromosomal DNA following treatment with cisplatin were identified, including high mobility group (HMG) proteins, histone proteins, and elongation factors. To reveal the exact molecular structures of cisplatin-mediated DPCs, isotope dilution HPLC-ESI+-MS/MS was employed to detect 1,1-cis-diammine-2-(5-amino-5-carboxypentyl)amino-2-(2'-deoxyguanosine-7-yl)-platinum(II) (dG-Pt-Lys) conjugates between the N7 guanine of DNA and the ε-amino group of lysine. Our results demonstrate that therapeutic levels of cisplatin induce a wide range of DPC lesions, which likely contribute to both target and off target effects of this clinically important drug.
Collapse
Affiliation(s)
- Xun Ming
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Arnold Groehler
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Erin D Michaelson-Richie
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Peter W Villalta
- Mass Spectrometry Core at the Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Colin Campbell
- Department of Pharmacology, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Natalia Y Tretyakova
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| |
Collapse
|
6
|
Groehler A, Villalta PW, Campbell C, Tretyakova N. Covalent DNA-Protein Cross-Linking by Phosphoramide Mustard and Nornitrogen Mustard in Human Cells. Chem Res Toxicol 2016; 29:190-202. [PMID: 26692166 DOI: 10.1021/acs.chemrestox.5b00430] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
N,N-Bis-(2-chloroethyl)-phosphorodiamidic acid (phosphoramide mustard, PM) and N,N-bis-(2-chloroethyl)-amine (nornitrogen mustard, NOR) are the two biologically active metabolites of cyclophosphamide, a DNA alkylating drug commonly used to treat lymphomas, breast cancer, certain brain cancers, and autoimmune diseases. PM and NOR are reactive bis-electrophiles capable of cross-linking cellular biomolecules to form covalent DNA-DNA and DNA-protein cross-links (DPCs). In the present work, a mass spectrometry-based proteomics approach was employed to characterize PM- and NOR-mediated DNA-protein cross-linking in human cells. Following treatment of human fibrosarcoma cells (HT1080) with cytotoxic concentrations of PM, over 130 proteins were found to be covalently trapped to DNA, including those involved in transcriptional regulation, RNA splicing/processing, chromatin organization, and protein transport. HPLC-ESI(+)-MS/MS analysis of proteolytic digests of DPC-containing DNA from NOR-treated cells revealed a concentration-dependent formation of N-[2-[cysteinyl]ethyl]-N-[2-(guan-7-yl)ethyl]amine (Cys-NOR-N7G) conjugates, confirming that it cross-links cysteine thiols of proteins to the N7 position of guanines in DNA. Cys-NOR-N7G adduct numbers were higher in NER-deficient xeroderma pigmentosum cells (XPA) as compared with repair proficient cells. Furthermore, both XPA and FANCD2 deficient cells were sensitized to PM treatment as compared to that of wild type cells, suggesting that Fanconi anemia and nucleotide excision repair pathways are involved in the removal of cyclophosphamide-induced DNA damage.
Collapse
Affiliation(s)
- Arnold Groehler
- Department of Medicinal Chemistry, ‡Department of Pharmacology, and §Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Peter W Villalta
- Department of Medicinal Chemistry, ‡Department of Pharmacology, and §Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Colin Campbell
- Department of Medicinal Chemistry, ‡Department of Pharmacology, and §Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Natalia Tretyakova
- Department of Medicinal Chemistry, ‡Department of Pharmacology, and §Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| |
Collapse
|
7
|
Shuck SC, Rose KL, Marnett LJ. Mass spectrometric methods for the analysis of nucleoside-protein cross-links: application to oxopropenyl-deoxyadenosine. Chem Res Toxicol 2013; 27:136-46. [PMID: 24359270 DOI: 10.1021/tx400384e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electrophilic DNA adducts produced following oxidative stress can form DNA-protein cross-links (DPCs), dramatically altering genomic maintenance pathways. Complete characterization of DPCs has been hindered, in part, because of a lack of comprehensive techniques for their analysis. We have, therefore, established a proteomics approach to investigate sites of cross-link formation using N(6)-(3-oxo-1-propenyl)-2'-deoxyadenosine (OPdA), an electrophilic DNA adduct produced from oxidative stress. OPdA was reacted with albumin and reduced with NaBH4 to stabilize DPCs. Using LC-MS/MS proteomics techniques, high-resolution peptide sequence data were obtained; however, using a database searching strategy, adducted peptides were only identified in samples subjected to chemical depurination. This strategy revealed multiple oxopropenyl adenine-lysine adducts and oxopropenyl-lysine adducts with the most reactive lysines identified to be Lys256 and Lys548. Manual interrogation of the mass spectral data provided evidence of OPdA deoxynucleoside conjugates to lysines and cross-links that underwent facile collision-induced dissociation to release an unmodified peptide without subsequent fragmentation. These fragmentations precluded adduct detection and peptide sequencing using database searching methods. Thus, comprehensive analysis of DPCs requires chemical depurination of DNA-protein reaction mixtures followed by a combination of database-dependent and manual interrogation of LC-MS/MS data using higher-energy collision-induced dissociation. In the present case, this approach revealed that OPdA selectively modifies surface lysine residues and produces nucleoside-protein cross-links and oxopropenyl lysine.
Collapse
Affiliation(s)
- Sarah C Shuck
- Department of Biochemistry, Vanderbilt University , Nashville, Tennessee 37232, United States
| | | | | |
Collapse
|
8
|
Gherezghiher TB, Ming X, Villalta PW, Campbell C, Tretyakova NY. 1,2,3,4-Diepoxybutane-induced DNA-protein cross-linking in human fibrosarcoma (HT1080) cells. J Proteome Res 2013; 12:2151-64. [PMID: 23506368 DOI: 10.1021/pr3011974] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
1,2,3,4-Diepoxybutane (DEB) is the key carcinogenic metabolite of 1,3-butadiene (BD), an important industrial and environmental chemical present in urban air and in cigarette smoke. DEB is a genotoxic bis-electrophile capable of cross-linking cellular biomolecules to form DNA-DNA and DNA-protein cross-links (DPCs). In the present work, mass spectrometry-based proteomics was employed to characterize DEB-mediated DNA-protein cross-linking in human fibrosarcoma (HT1080) cells. Over 150 proteins including histones, high mobility group proteins, transcription factors, splicing factors, and tubulins were found among those covalently cross-linked to chromosomal DNA in the presence of DEB. A large portion of the cross-linked proteins are known factors involved in DNA binding, transcriptional regulation, cell signaling, DNA repair, and DNA damage response. HPLC-ESI(+)-MS/MS analysis of total proteolytic digests revealed the presence of 1-(S-cysteinyl)-4-(guan-7-yl)-2,3-butanediol conjugates, confirming that DEB forms DPCs between cysteine thiols within proteins and the N-7 guanine positions within DNA. However, relatively high concentrations of DEB were required to achieve significant DPC formation, indicating that it is a poor cross-linking agent as compared to antitumor nitrogen mustards and platinum compounds.
Collapse
Affiliation(s)
- Teshome B Gherezghiher
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | | | | | |
Collapse
|
9
|
Wang Y, Zhu Y, Wang Y, Chen G. Structural analysis of zinc-finger (TTK) + [Cu(BPA)]2+ /[Cu(IDB)]2+ + DNA complexes: an investigation by molecular dynamics simulation. J Mol Recognit 2011; 24:981-94. [PMID: 22038805 DOI: 10.1002/jmr.1146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In the present study, the molecular dynamics simulation technique is employed to investigate the hydrogen abstraction possibility from sugar of DNA in two designed complexes of copper-based chemical nuclease [Cu(BPA)](2+) bis(2-pyridylmethyl) amine (BPA) or [Cu(IDB)](2+) N,N-bis(2-benzimidazolylmethyl) amine (IDB) bound to the zinc finger protein Tramtrack (TTK). The simulated results show that each of the designed complexes can form a stable conformation within 30 ns of simulation time with the substrate OOH(-) and an 18-base pair (bp) DNA segment and is located in the major groove of the DNA segment. The active terminal O atom of the OOH(-) substrate is found in close proximity to the target C2'H, C3'H, C4'H or C5'H proton of the DNA in TTK + [Cu(BPA)OOH](+) + DNA or TTK + [Cu(IDB)OOH](+) + DNA complex, which is crucial to propose the hydrogen abstraction possibility that is responsible for the DNA cleavage. The positions of copper-based chemical nucleases bound to TTK may substantially influence the hydrogen abstraction possibility. The structures and sizes of ligands in copper-based nucleases are also found to have influence on the order of difficulty of the hydrogen abstraction from the sugars of DNA.
Collapse
Affiliation(s)
- Yaru Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | | | | | | |
Collapse
|
10
|
Li H, Zhao Y, Phillips HIA, Qi Y, Lin TY, Sadler PJ, O’Connor PB. Mass spectrometry evidence for cisplatin as a protein cross-linking reagent. Anal Chem 2011; 83:5369-76. [PMID: 21591778 PMCID: PMC3131505 DOI: 10.1021/ac200861k] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cisplatin is a potent anticancer drug, which functions by cross-linking adjacent DNA guanine residues. However within 1 day of injection, 65-98% of the platinum in the blood plasma is protein-bound. It is generally accepted that cisplatin binds to methionine and histidine residues, but what is often underappreciated is that platinum from cisplatin has a 2+ charge and can form up to four bonds. Thus, it has the potential to function as a cross-linker. In this report, the cross-linking ability of cisplatin is demonstrated by Fourier transform ion cyclotron resonance (FTICR) mass spectrometry (MS) with the use of standard peptides, the 16.8 kDa protein calmodulin (CaM), but was unsuccessful for the 64 kDa protein hemoglobin. The high resolution and mass accuracy of FTICR MS along with the high degree of fragmentation of large peptides afforded by collisionally activated dissociation (CAD) and electron capture dissociation (ECD) are shown to be a valuable means of characterizing cross-linking sites. Cisplatin is different from current cross-linking reagents by targeting new functional groups, thioethers, and imidazoles groups, which provides complementarity with existing cross-linkers. In addition, platinum(II) inherently has two positive charges which enhance the detection of cross-linked products. Higher charge states not only promote the detection of cross-linking products with less purification but result in more comprehensive MS/MS fragmentation and can assist in the assignment of modification sites. Moreover, the unique isotopic pattern of platinum flags cross-linking products and modification sites by mass spectrometry.
Collapse
Affiliation(s)
- Huilin Li
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Yao Zhao
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Hazel I. A. Phillips
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Yulin Qi
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Tzu-Yung Lin
- School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Peter J. Sadler
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Peter B. O’Connor
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| |
Collapse
|
11
|
Michaelson-Richie ED, Ming X, Codreanu SG, Loeber RL, Liebler DC, Campbell C, Tretyakova NY. Mechlorethamine-induced DNA-protein cross-linking in human fibrosarcoma (HT1080) cells. J Proteome Res 2011; 10:2785-96. [PMID: 21486066 DOI: 10.1021/pr200042u] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Antitumor nitrogen mustards, such as bis(2-chloroethyl)methylamine (mechlorethamine), are useful chemotherapeutic agents with a long history of clinical application. The antitumor effects of nitrogen mustards are attributed to their ability to induce DNA-DNA and DNA-protein cross-links (DPCs) that block DNA replication. In the present work, a mass spectrometry-based methodology was employed to characterize in vivo DNA-protein cross-linking following treatment of human fibrosarcoma (HT1080) cells with cytotoxic concentrations of mechlorethamine. A combination of mass spectrometry-based proteomics and immunological detection was used to identify 38 nuclear proteins that were covalently cross-linked to chromosomal DNA following treatment with mechlorethamine. Isotope dilution HPLC-ESI(+)-MS/MS analysis of total proteolytic digests revealed a concentration-dependent formation of N-[2-(S-cysteinyl)ethyl]-N-[2-(guan-7-yl)ethyl]methylamine (Cys-N7G-EMA) conjugates, indicating that mechlorethamine cross-links cysteine thiols within proteins to N-7 positions of guanine in DNA.
Collapse
Affiliation(s)
- Erin D Michaelson-Richie
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | | | | | | | | | |
Collapse
|
12
|
Quintal SM, dePaula QA, Farrell NP. Zinc finger proteins as templates for metal ion exchange and ligand reactivity. Chemical and biological consequences. Metallomics 2011; 3:121-39. [PMID: 21253649 DOI: 10.1039/c0mt00070a] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Zinc finger reactions with inorganic ions and coordination compounds are as diverse as the zinc fingers themselves. Use of metal ions such as Co(2+) and Cd(2+) has given structural, thermodynamic and kinetic information on zinc fingers and zinc-finger-DNA/RNA interactions. It is a general truism that alteration of the coordination sphere in the finger environment will disrupt the recognition with DNA/RNA and this has implications for mechanism of toxicity and carcinogenesis of metal ions. Structural zinc fingers are susceptible to electrophilic attack and the recognition that the coordination sphere of inorganic compounds may be modulated for control of electrophilic attack on zinc fingers raises the possibility of systematic studies of zinc fingers as drug targets using inorganic chemistry. Some inorganic compounds such as those of As(III) and Au(I) may exert their biological effects through inactivation of zinc fingers and novel approaches to specifically attack the zinc-bound ligands using Co(III)-Schiff bases and Platinum(II)-Nucleobase compounds have been proposed. The genomic importance of zinc fingers suggests that the "coordination chemistry" of zinc fingers themselves is ripe for exploration to design new targets for medicinal inorganic chemistry.
Collapse
Affiliation(s)
- Susana M Quintal
- Department of Chemistry, Virginia Commonwealth University, 1001 W. Main St., Richmond, VA 23284-2006, USA
| | | | | |
Collapse
|
13
|
Michaelson-Richie ED, Loeber RL, Codreanu SG, Ming X, Liebler DC, Campbell C, Tretyakova NY. DNA-protein cross-linking by 1,2,3,4-diepoxybutane. J Proteome Res 2011; 9:4356-67. [PMID: 20666492 DOI: 10.1021/pr1000835] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
1,2,3,4-diepoxybutane (DEB) is a strongly genotoxic diepoxide hypothesized to be the ultimate carcinogenic metabolite of the common industrial chemical and environmental carcinogen 1,3-butadiene. DEB is a bis-electrophile capable of cross-linking cellular biomolecules to form DNA-DNA and DNA-protein cross-links (DPCs), which are thought to play a central role in its biological activity. Previous studies with recombinant proteins have shown that the biological outcomes of DEB-induced DPCs are strongly influenced by protein identities. The present work combines affinity capture methodology with mass spectrometry-based proteomics and immunological detection to identify the proteins that form DPCs in nuclear extracts from human cervical carcinoma (HeLa) cells. We identified 39 human proteins that form covalent DPCs in the presence of DEB. DNA-protein cross-linking efficiency following treatment with 25 mM DEB was 2-12%, depending on protein identity. High-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (HPLC-ESI+-MS/MS) analysis of the total proteolytic digests of cross-linked proteins revealed the presence of 1-(S-cysteinyl)-4-(guan-7-yl)-2,3-butanediol conjugates, suggesting that DEB forms DPCs between cysteine thiols within proteins and the N-7 guanine positions within DNA.
Collapse
Affiliation(s)
- Erin D Michaelson-Richie
- Department of Medicinal Chemistry and the Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | | | | | | | | | |
Collapse
|
14
|
Horáková P, Těsnohlídková L, Havran L, Vidláková P, Pivoňková H, Fojta M. Determination of the Level of DNA Modification with Cisplatin by Catalytic Hydrogen Evolution at Mercury-Based Electrodes. Anal Chem 2010; 82:2969-76. [DOI: 10.1021/ac902987x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Petra Horáková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic, and Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Lucie Těsnohlídková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic, and Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Luděk Havran
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic, and Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Pavlína Vidláková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic, and Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Hana Pivoňková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic, and Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Miroslav Fojta
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic, and Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| |
Collapse
|
15
|
Mendoza-Ferri MG, Hartinger CG, Nazarov AA, Eichinger RE, Jakupec MA, Severin K, Keppler BK. Influence of the Arene Ligand, the Number and Type of Metal Centers, and the Leaving Group on the in Vitro Antitumor Activity of Polynuclear Organometallic Compounds. Organometallics 2009. [DOI: 10.1021/om900715j] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maria G. Mendoza-Ferri
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Christian G. Hartinger
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Alexey A. Nazarov
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Rene E. Eichinger
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| |
Collapse
|
16
|
Loeber RL, Michaelson-Richie ED, Codreanu SG, Liebler DC, Campbell CR, Tretyakova NY. Proteomic analysis of DNA-protein cross-linking by antitumor nitrogen mustards. Chem Res Toxicol 2009; 22:1151-62. [PMID: 19480393 DOI: 10.1021/tx900078y] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nitrogen mustards are antitumor agents used clinically for the treatment of a variety of neoplastic conditions. The biological activity of these compounds is typically attributed to their ability to induce DNA-DNA cross-links. However, nitrogen mustards are able to produce a variety of other lesions, including DNA-protein cross-links (DPCs). DPCs induced by nitrogen mustards are not well-characterized because of their structural complexity and the insufficient specificity and sensitivity of previously available experimental methodologies. In the present work, affinity capture methodology in combination with mass spectrometry-based proteomics was employed to identify mammalian proteins that form covalent cross-links to DNA in the presence of a simple nitrogen mustard, mechlorethamine. Following incubation of 5'-biotinylated DNA duplexes with nuclear protein extracts, DPCs were isolated by affinity capture on streptavidin beads, and the cross-linked proteins were identified by high-performance liquid chromatography-electrospray tandem mass spectrometry of tryptic peptides. Mechlorethamine treatment resulted in the formation of DPCs with nuclear proteins involved in chromatin regulation, DNA replication and repair, cell cycle control, transcriptional regulation, and cell architecture. Western blot analysis was employed to confirm protein identification and to quantify the extent of drug-mediated cross-linking. Mass spectrometry of amino acid-nucleobase conjugates found in total proteolytic digests revealed that mechlorethamine-induced DPCs are formed via alkylation of the N7 position of guanine in duplex DNA and cysteine thiols within the proteins to give N-[2-[S-cysteinyl]ethyl]-N-[2-(guan-7-yl)ethyl]methylamine lesions. The results described herein suggest that cellular exposure to nitrogen mustards leads to cross-linking of a large spectrum of nuclear proteins to chromosomal DNA, potentially contributing to the cytotoxic and mutagenic effects of these drugs.
Collapse
Affiliation(s)
- Rachel L Loeber
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | | | | | | | |
Collapse
|
17
|
Kakadiya R, Dong H, Lee PC, Kapuriya N, Zhang X, Chou TC, Lee TC, Kapuriya K, Shah A, Su TL. Potent antitumor bifunctional DNA alkylating agents, synthesis and biological activities of 3a-aza-cyclopenta[a]indenes. Bioorg Med Chem 2009; 17:5614-26. [DOI: 10.1016/j.bmc.2009.06.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 06/09/2009] [Accepted: 06/11/2009] [Indexed: 02/06/2023]
|
18
|
Kozelka J. Molecular origin of the sequence-dependent kinetics of reactions between cisplatin derivatives and DNA. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.04.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
19
|
Reedijk J. Medicinal Applications of Metal Complexes Binding to Biological Macromolecules. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/masy.200851023] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
20
|
Almaraz E, de Paula QA, Liu Q, Reibenspies JH, Darensbourg MY, Farrell NP. Thiolate Bridging and Metal Exchange in Adducts of a Zinc Finger Model and PtII Complexes: Biomimetic Studies of Protein/Pt/DNA Interactions. J Am Chem Soc 2008; 130:6272-80. [DOI: 10.1021/ja711254q] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elky Almaraz
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Queite A. de Paula
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Qin Liu
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Joseph H. Reibenspies
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Marcetta Y. Darensbourg
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Nicholas P. Farrell
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| |
Collapse
|
21
|
Loeber R, Michaelson E, Fang Q, Campbell C, Pegg AE, Tretyakova N. Cross-linking of the DNA repair protein Omicron6-alkylguanine DNA alkyltransferase to DNA in the presence of antitumor nitrogen mustards. Chem Res Toxicol 2008; 21:787-95. [PMID: 18324787 DOI: 10.1021/tx7004508] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The antitumor activity of chemotherapeutic nitrogen mustards including chlorambucil, cyclophosphamide, and melphalan is commonly attributed to their ability to induce DNA-DNA cross-links by consecutive alkylation of two nucleophilic sites within the DNA duplex. DNA-protein cross-linking by nitrogen mustards is not well characterized, probably because of its inherent complexity and the insufficient sensitivity of previous methodologies. If formed, DNA-protein conjugates are likely to contribute to both target and off-target cytotoxicity of nitrogen mustard drugs. Here, we show that the DNA repair protein, O (6)-alkylguanine DNA alkyltransferase (AGT), can be readily cross-linked to DNA in the presence of nitrogen mustards. Both chlorambucil and mechlorethamine induced the formation of covalent conjugates between (32)P-labeled double-stranded oligodeoxynucleotides and recombinant human AGT protein, which were detected by SDS-PAGE. Capillary HPLC-electrospray ionization mass spectrometry (ESI-MS) analysis of AGT that had been treated with the guanine half-mustards of chlorambucil or mechlorethamine revealed the ability of the protein to form either one or two cross-links to guanine. C145A AGT (a variant containing a single point mutation in the protein's active site) was found capable of forming a single guanine conjugate, while cross-linking was virtually abolished upon treatment of the C145A/C150S AGT double mutant with the guanine half-mustards. HPLC-ESI (+)-MS/MS sequencing of tryptic peptides obtained from the wild-type AGT protein that had been treated with nitrogen mustards in the presence of DNA confirmed that the cross-linking took place between the N7 position of guanine in DNA and two active site residues within the AGT protein (Cys (145) and Cys (150)). The exact chemical structures of AGT-DNA cross-links induced by chlorambucil and mechlorethamine were identified as N-(2-[ S-cysteinyl]ethyl)- N-(2-[guan-7-yl]ethyl)- p-aminophenylbuyric acid and N-(2-[ S-cysteinyl]ethyl)- N-(2-[guan-7-yl]ethyl)methylamine, respectively, based upon HPLC-MS/MS analysis of protein hydrolysates in parallel with the corresponding amino acid conjugates prepared synthetically. Mechlorethamine-induced AGT-DNA conjugates were isolated from protein extracts of AGT-expressing CHO cells but not control cells, demonstrating that nitrogen mustards can cross-link the AGT protein to DNA in the presence of other nuclear proteins. Because AGT is overexpressed in many tumor types, further investigations of the potential role of AGT-DNA cross-linking in the antitumor and mutagenic activity of antitumor nitrogen mustards are warranted.
Collapse
Affiliation(s)
- Rachel Loeber
- Department of Medicinal Chemistry and Cancer Center and Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | | | | | | | |
Collapse
|
22
|
Chválová K, Sari MA, Bombard S, Kozelka J. LEF-1 recognition of platinated GG sequences within double-stranded DNA. Influence of flanking bases. J Inorg Biochem 2007; 102:242-50. [PMID: 17961652 DOI: 10.1016/j.jinorgbio.2007.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2007] [Revised: 08/03/2007] [Accepted: 08/23/2007] [Indexed: 11/30/2022]
Abstract
The lymphoid enhancer-binding factor 1 (LEF-1) recognizes a double-stranded 9 base-pairs (bp) long motif in DNA which is significantly bent upon binding. This bend is centered at two destacked adenines whose geometry closely resembles that of two adjacent guanines crosslinked by the antitumor drug cisplatin. It has been proposed that cisplatin-GG crosslinks could hijack high mobility group (HMG) box containing transcription factors such as LEF-1. In order to examine such a possibility, we used electrophoretic mobility shift assays to determine the affinity of the HMG box of LEF-1 for a series of 25 oligonucleotides containing a central GG sequence, free or site-specifically modified by cisplatin. The binding affinity of the GG-platinated oligonucleotides was 3-6-fold higher than that determined for the corresponding unplatinated oligonucleotides, however, the binding to all cisplatin-modified oligonucleotides was at least 1 order of magnitude weaker than that to the 25 bp oligonucleotide containing the recognition 9 bp motif. The binding affinity was dependent on the nature of bases flanking the cisplatin-crosslinked G(*)G(*) dinucleotide, the AG(*)G(*)T sequence displaying the strongest affinity and CG(*)G(*)T showing the strongest binding enhancement upon platination. In contrast, modification of the AGGT sequence with the third-generation platinum antitumor drug oxaliplatin did not enhance the affinity significantly. These results suggest that the cisplatin-caused bending of DNA does produce a target for LEF-1 binding, however, the cisplatinated DNA does not appear to be a strong competitor for the LEF-1 recognition sequence.
Collapse
Affiliation(s)
- Katerina Chválová
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes, UMR 8601 CNRS, 45, rue des Saints-Pères, 75270 Paris, France
| | | | | | | |
Collapse
|
23
|
Kang M, Chouai A, Chifotides HT, Dunbar KR. 2D NMR spectroscopic evidence for unprecedented interactions of cis-[Rh2(dap)(mu-O2CCH3)2(eta1-O2CCH3)(CH3OH)](O2CCH3) with a DNA oligonucleotide: combination of intercalative and coordinative binding. Angew Chem Int Ed Engl 2007; 45:6148-51. [PMID: 16927356 DOI: 10.1002/anie.200600938] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mijeong Kang
- Department of Chemistry, Texas A&M University, College Station, TX 77842, USA
| | | | | | | |
Collapse
|
24
|
Brabec V, Christofis P, Slámová M, Kostrhunová H, Nováková O, Najajreh Y, Gibson D, Kaspárková J. DNA interactions of new cytotoxic tetrafunctional dinuclear platinum complex trans,trans-[{PtCl2(NH3)}2(piperazine)]. Biochem Pharmacol 2007; 73:1887-900. [PMID: 17400194 DOI: 10.1016/j.bcp.2007.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2007] [Revised: 02/09/2007] [Accepted: 03/02/2007] [Indexed: 11/28/2022]
Abstract
A new tetrafunctional dinuclear platinum complex trans,trans-[{PtCl2(NH3)}2(piperazine)] with sterically rigid linking group was designed, synthesized and characterized. In this novel molecule, the DNA-binding features of two classes of the platinum compounds with proven antitumor activity are combined, namely trans oriented bifunctional mononuclear platinum complexes with a heterocyclic ligand and polynuclear platinum complexes. DNA-binding mode of this new complex was analyzed by various methods of molecular biology and biophysics. The complex coordinates DNA in a unique way and interstrand and intrastrand cross-links are the predominant lesions formed in DNA in cell-free media and in absence of proteins. An intriguing aspect of trans,trans-[{PtCl2(NH3)}2(piperazine)] is that, using a semi-rigid linker, interstrand cross-linking is diminished relative to other dinuclear platinum complexes with flexible linking groups and lesions that span several base pairs, such as tri- and tetrafunctional adducts, become unlikely. In addition, in contrast to the inability of trans,trans-[{PtCl2(NH3)}2(piperazine)] to cross-link two DNA duplexes, the results of the present work convincingly demonstrate that this dinuclear platinum complex forms specific DNA lesions which can efficiently cross-link proteins to DNA. The results substantiate the view that trans,trans-[{PtCl2(NH3)}2(piperazine)] or its analogues could be used as a tool for studies of DNA properties and their interactions or as a potential antitumor agent. The latter view is also corroborated by the observation that trans,trans-[{PtCl2(NH3)}2(piperazine)] is a more effective cytotoxic agent than cisplatin against human tumor ovarian cell lines.
Collapse
Affiliation(s)
- Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Chválová K, Brabec V, Kašpárková J. Mechanism of the formation of DNA-protein cross-links by antitumor cisplatin. Nucleic Acids Res 2007; 35:1812-21. [PMID: 17329374 PMCID: PMC1874601 DOI: 10.1093/nar/gkm032] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
DNA–protein cross-links are formed by various DNA-damaging agents including antitumor platinum drugs. The natures of these ternary DNA–Pt–protein complexes (DPCLs) can be inferred, yet much remains to be learned about their structures and mechanisms of formation. We investigated the origin of these DPCLs and their cellular processing on molecular level using gel electrophoresis shift assay. We show that in cell-free media cisplatin [cis-diamminedichloridoplatinum(II)] forms DPCLs more effectively than ineffective transplatin [trans-diamminedichloridoplatinum(II)]. Mechanisms of transformation of individual types of plain DNA adducts of the platinum complexes into the DPCLs in the presence of several DNA-binding proteins have been also investigated. The DPCLs are formed by the transformation of DNA monofunctional and intrastrand cross-links of cisplatin. In contrast, interstrand cross-links of cisplatin and monofunctional adducts of transplatin are stable in presence of the proteins. The DPCLs formed by cisplatin inhibit DNA polymerization or removal of these ternary lesions from DNA by nucleotide excision repair system more effectively than plain DNA intrastrand or monofunctional adducts. Thus, the bulky DNA–protein cross-links formed by cisplatin represent a more distinct and persisting structural motif recognized by the components of downstream cellular systems processing DNA damage considerably differently than the plain DNA adducts of this metallodrug.
Collapse
Affiliation(s)
| | | | - Jana Kašpárková
- *To whom correspondence should be addressed. +420 541517174+420 541240499
| |
Collapse
|
26
|
Control of the platinum(II) ligating properties of rigid 1,2-diamines: the case of trans-2,3-diaminonorbornane. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
27
|
Kang M, Chouai A, Chifotides HT, Dunbar KR. 2D NMR Spectroscopic Evidence for Unprecedented Interactions ofcis-[Rh2(dap)(μ-O2CCH3)2(η1-O2CCH3)(CH3OH)](O2CCH3) with a DNA Oligonucleotide: Combination of Intercalative and Coordinative Binding. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600938] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
28
|
Jaramillo D, Wheate NJ, Ralph SF, Howard WA, Tor Y, Aldrich-Wright JR. Polyamide Platinum Anticancer Complexes Designed to Target Specific DNA Sequences. Inorg Chem 2006; 45:6004-13. [PMID: 16842007 DOI: 10.1021/ic060383n] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Two new platinum complexes, trans-chlorodiammine[N-(2-aminoethyl)-4-[4-(N-methylimidazole-2-carboxamido)-N-methylpyrrole-2-carboxamido]-N-methylpyrrole-2-carboxamide]platinum(II) chloride (DJ1953-2) and trans-chlorodiammine[N-(6-aminohexyl)-4-[4-(N-methylimidazole-2-carboxamido)-N-methylpyrrole-2-carboxamido]-N-methylpyrrole-2-carboxamide]platinum(II) chloride (DJ1953-6) have been synthesized as proof-of-concept molecules in the design of agents that can specifically target genes in DNA. Coordinate covalent binding to DNA was demonstrated with electrospray ionization mass spectrometry. Using circular dichroism, these complexes were found to show greater DNA binding affinity to the target sequence: d(CATTGTCAGAC)(2), than toward either d(GTCTGTCAATG)(2,) which contains different flanking sequences, or d(CATTGAGAGAC)(2), which contains a double base pair mismatch sequence. DJ1953-2 unwinds the DNA helix by around 13 degrees , but neither metal complex significantly affects the DNA melting temperature. Unlike simple DNA minor groove binders, DJ1953-2 is able to inhibit, in vitro, RNA synthesis. The cytotoxicity of both metal complexes in the L1210 murine leukaemia cell line was also determined, with DJ1953-6 (34 microM) more active than DJ1953-2 (>50 microM). These results demonstrate the potential of polyamide platinum complexes and provide the structural basis for designer agents that are able to recognize biologically relevant sequences and prevent DNA transcription and replication.
Collapse
Affiliation(s)
- David Jaramillo
- School of Biomedical and Health Sciences, University of Western Sydney, Campbelltown, New South Wales 2560, Australia
| | | | | | | | | | | |
Collapse
|
29
|
Liu Q, Golden M, Darensbourg MY, Farrell N. Thiolate-bridged heterodinuclear platinum–zinc chelates as models for ternary platinum–DNA–protein complexes and zinc ejection from zinc fingers. Evidence from studies using ESI-mass spectrometry. Chem Commun (Camb) 2005:4360-2. [PMID: 16113748 DOI: 10.1039/b507751f] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structures for model ternary platinum-DNA-protein complexes and zinc ejection from zinc fingers by platinum were deduced from the ESI-MS spectra of the interaction of model Zn and Pt complexes.
Collapse
Affiliation(s)
- Qin Liu
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, USA
| | | | | | | |
Collapse
|
30
|
Seo MS, Soo Sohn Y, Yang BS, Nam W, Mook Kim K. Novel platinum complexes having chirality and free tertiary amine groups for multiple interactions with DNA. INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2004.09.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|