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Juchem ALM, Trindade C, da Silva JB, Machado MDS, Guecheva TN, Rocha JC, Saffi J, de Oliveira IM, Henriques JAP, Escargueil A. Diphenyl ditelluride anticancer activity and DNA topoisomerase I poisoning in human colon cancer HCT116 cells. Oncotarget 2023; 14:637-649. [PMID: 37343056 DOI: 10.18632/oncotarget.28465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023] Open
Abstract
Diphenyl ditelluride (DPDT) is an organotellurium (OT) compound with pharmacological properties, including antioxidant, antigenotoxic and antimutagenic activities when applied at low concentrations. However, DPDT as well as other OT compounds also show cytotoxicity against mammalian cells when treatments occur at higher drug concentrations. Considering that the underlying mechanisms of toxicity of DPDT against tumor cells have been poorly explored, the objective of our study was to investigate the effects of DPDT against both human cancer and non-tumorigenic cells. As a model, we used the colonic HCT116 cancer cells and the MRC5 fibroblasts. Our results showed that DPDT preferentially targets HCT116 cancer cells when compared to MRC5 cells with IC50 values of 2.4 and 10.1 μM, respectively. This effect was accompanied by the induction of apoptosis and a pronounced G2/M cell cycle arrest in HCT116 cells. Furthermore, DPDT induces DNA strand breaks at concentrations below 5 μM in HCT116 cells and promotes the occurrence of DNA double strand breaks mostly during S-phase as measured by γ-H2AX/EdU double staining. Finally, DPDT forms covalent complexes with DNA topoisomerase I, as observed by the TARDIS assay, with a more prominent effect observed in HCT116 than in MRC5 cells. Taken together, our results show that DPDT preferentially targets HCT116 colon cancer cells likely through DNA topoisomerase I poisoning. This makes DPDT an interesting molecule for further development as an anti-proliferative compound in the context of cancer.
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Affiliation(s)
- André Luiz Mendes Juchem
- Department of Biophysics/Postgraduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, Paris F-75012, France
| | - Cristiano Trindade
- Department of Basic Health Sciences, Federal University of Health Sciences of Porto Alegre - UFCSPA, Porto Alegre - RS, Brazil
| | - Juliana Bondan da Silva
- Department of Postgraduate Program in Molecular and Cell Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, Brazil
| | - Miriana da Silva Machado
- Department of Biophysics/Postgraduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Temenouga Nikolova Guecheva
- Department of Biophysics/Postgraduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Jaqueline Cesar Rocha
- Department of Basic Health Sciences, Federal University of Health Sciences of Porto Alegre - UFCSPA, Porto Alegre - RS, Brazil
| | - Jenifer Saffi
- Department of Basic Health Sciences, Federal University of Health Sciences of Porto Alegre - UFCSPA, Porto Alegre - RS, Brazil
| | - Iuri Marques de Oliveira
- Department of Biophysics/Postgraduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - João Antonio Pêgas Henriques
- Department of Biophysics/Postgraduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Postgraduate Program in Biotechnology and Medical Sciences, University of Vale do Taquari - UNIVATES, Lajeado - RS, Brazil
| | - Alexandre Escargueil
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, Paris F-75012, France
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Oxidative stress response system in Escherichia coli arising from diphenyl ditelluride (PhTe) 2 exposure. Toxicol In Vitro 2022; 83:105404. [PMID: 35654257 DOI: 10.1016/j.tiv.2022.105404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/25/2022] [Accepted: 05/26/2022] [Indexed: 11/20/2022]
Abstract
The toxicity of diphenyl ditelluride (PhTe)2 is associated with its ability to oxidize sulfhydryl groups from biological molecules. Therefore, we evaluated possible molecular mechanisms of toxicity induced by this organochalcogen in Escherichia coli (E. coli) by evaluating oxidative damage markers, relative expression of genes associated with the cellular redox state in bacteria, such as katG, sodA, sodB, soxS, and oxyR, as well as the activity of enzymes responsible for cellular redox balance. After exposure of (PhTe)2 (6, 12, and 24 μg/mL), there was a decrease in non-protein thiols (NPSH) levels, an increase in protein carbonylation and lipid peroxidation in E. coli. Intra- and extracellular reactive species (RS) was increased at concentrations of 6, 12, and 24 μg/mL. The superoxide dismutase (SOD) activity was increased at the three concentrations tested, while catalase (CAT) activity was higher at 12 and 24 μg/mL. The soxS gene showed lower expression at the three concentrations tested, while the oxyR gene was supressed at 24 μg/mL. The katG antioxidant response gene showed lower expression, and sodA and sodB were positively activated, except for sodB at 6 μg/mL. Our findings demonstrate that exposure to (PhTe)2 induced RS formation, NPSH depletion and changes in transcriptional factors regulation, characterizing it as a multi-target compound, causing disruption in cellular oxidative state, as well as molecular mechanisms associated in E. coli.
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Diphenyl Ditelluride: Redox-Modulating and Antiproliferative Properties. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2510936. [PMID: 31772702 PMCID: PMC6854260 DOI: 10.1155/2019/2510936] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 03/09/2019] [Accepted: 07/11/2019] [Indexed: 11/17/2022]
Abstract
Tellurium is a rare element that has been regarded as a toxic, nonessential element, and its biological role is not clearly established. In addition, the biological effects of elemental tellurium and some of its organic and inorganic derivatives have been studied, leading to a set of interesting and promising applications. Diphenyl ditelluride (DPDT), an organic tellurium derivate, showed antioxidant, antigenotoxic, antimutagenic, and anticancer properties. The antioxidant and prooxidant properties of DPDT are complex and depend on experimental conditions, which may explain the contradictory reports of these properties. In addition, DPDT may exert its effects through different pathways, including distinct ones to those responsible for chemotherapy resistance phenotypes: transcription factors, membrane receptors, adhesion, structural molecules, cell cycle regulatory components, and apoptosis pathways. This review aims to present recent advances in our understanding of the biological effects, therapeutic potential, and safety of DPDT treatment. Moreover, original results demonstrating the cytotoxic effects of DPDT in different mammalian cell lines and systems biology analysis are included, and emerging approaches for possible future applications are inferred.
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Figat R, Zgadzaj A, Geschke S, Sieczka P, Pietrosiuk A, Sommer S, Skrzypczak A. Cytotoxicity and antigenotoxicity evaluation of acetylshikonin and shikonin. Drug Chem Toxicol 2018; 44:140-147. [PMID: 30574814 DOI: 10.1080/01480545.2018.1536710] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Shikonin (SH) is used as a red pigment for food coloring and cosmetics, and has cytotoxic activity towards cancer cells. However, due to strong toxicity SH has limited potential as an anticancer drug. Acetylshikonin (ASH) is one of the SH derivatives with promising anticancer potential. In present study, we attempted to evaluate and compare the cytotoxicity of SH and ASH towards a normal cell line (V79) and in addition to evaluate their antigenotoxic activity. The evaluation was made with the use of the set of cytotoxicity assays with V79 line and the micronucleus test in vitro performed using clinafloxacin (CLFX), ethyl methanesulfonate (EMS) as direct genotoxins and cyclophosphamide (CPA) as indirect genotoxin. For CPA and EMS the simultaneous protocol was used and for CLFX three different variants were performed: pretreatment, simultaneous, and post-treatment. A higher cytotoxic effect was observed for SH. The EC50 values obtained for SH were approximately twofold lower compared to that of ASH. Moreover, ASH exhibited an antigenotoxic potential against CPA-induced genotoxicity, whereas SH has no activity. However, ASH increased the EMS-induced genotoxicity, when SH exhibited no effect. Both compounds decreased the genotoxicity of CLFX in pretreatment and simultaneous protocol. Based on the results of the present study it can be concluded that ASH is less cytotoxic than SH to normal cells and has comparable antigenotoxic potential.
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Affiliation(s)
- Ramona Figat
- Department of Environmental Health Sciences, Medical University of Warsaw, Poland
| | - Anna Zgadzaj
- Department of Environmental Health Sciences, Medical University of Warsaw, Poland
| | - Sylwia Geschke
- Department of Environmental Health Sciences, Medical University of Warsaw, Poland
| | - Patrycja Sieczka
- Department of Environmental Health Sciences, Medical University of Warsaw, Poland
| | - Agnieszka Pietrosiuk
- Department of Pharmaceutical Biology and Medicinal Plant Biotechnology, Medical University of Warsaw, Poland
| | - Sylwester Sommer
- Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Warsaw, Poland
| | - Agata Skrzypczak
- Department of Environmental Health Sciences, Medical University of Warsaw, Poland
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The design of redox active thiol peroxidase mimics: Dihydrolipoic acid recognition correlates with cytotoxicity and prooxidant action. Biochem Pharmacol 2016; 104:19-28. [DOI: 10.1016/j.bcp.2016.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 01/14/2016] [Indexed: 10/22/2022]
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Trindade C, Bortolini GV, Costa BS, Anghinoni JC, Guecheva TN, Arias X, Césio MV, Heinzen H, Moura DJ, Saffi J, Salvador M, Henriques JAP. Antimutagenic and antioxidant properties of the aqueous extracts of organic and conventional grapevine Vitis labrusca cv. Isabella leaves in V79 cells. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2016; 79:825-836. [PMID: 27587288 DOI: 10.1080/15287394.2016.1190675] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Grapes are one of the most commonly consumed fruit, in both fresh and processed forms; however, a significant amount is disposed of in the environment. Searching for a use of this waste, the antigenotoxic, antimutagenic, and antioxidant activities of aqueous extracts from organic and conventional Vitis labrusca leaves were determined using V79 cells as model. The antigenotoxic activity was analyzed by the alkaline comet assay using endonuclease III and formamidopyrimidine DNA glycosylase enzymes. The antimutagenic property was assessed through the micronucleus (MN) formation, and antioxidant activities were assessed using 2',7'-dichlorodihydrofluorescin diacetate (DCFH-DA) assay and 2,2-diphenyl-1-picrylhydrazyl (DPPH(●)) radical scavenging, as well as with superoxide dismutase (SOD) and catalase (CAT) activity assays. In addition, phenolic content and ascorbic acid levels of both extracts were determined. Data showed that both organic and conventional grapevine leaves extracts possessed antigenotoxic and antimutagenic properties. The extract of organic leaves significantly reduced intracellular reactive oxygen species (ROS) levels in V79 cells, and displayed greater ability for DPPH(●) scavenging and higher SOD and CAT activities than extract from conventional leaves. Further, the extract from organic leaves contained higher phenolic and ascorbic acid concentrations. In summary, extracts from organic and conventional grape leaves induced important in vitro biological effects.
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Affiliation(s)
- Cristiano Trindade
- a Departamento de Biofísica/Centro de Biotecnologia , Instituto de Biociências, Universidade Federal do Rio Grande do Sul) , Porto Alegre , Rio Grande do Sul , Brazil
- b Unidad de Investigación, Innovación y Desarrollo en Genética y Biología Molecular , Universidad Simón Bolívar , Barranquilla , Colombia
| | - Giovana Vera Bortolini
- c Instituto de Biotecnologia, Universidade de Caxias do Sul , Caxias do Sul , Rio Grande do Sul , Brazil
| | - Bárbara Segalotto Costa
- c Instituto de Biotecnologia, Universidade de Caxias do Sul , Caxias do Sul , Rio Grande do Sul , Brazil
| | - Joanna Carra Anghinoni
- c Instituto de Biotecnologia, Universidade de Caxias do Sul , Caxias do Sul , Rio Grande do Sul , Brazil
| | - Temenouga Nikolova Guecheva
- a Departamento de Biofísica/Centro de Biotecnologia , Instituto de Biociências, Universidade Federal do Rio Grande do Sul) , Porto Alegre , Rio Grande do Sul , Brazil
| | - Ximena Arias
- d Cátedra de Farmacognosia y Productos Naturales, Facultad de Química , Universidad de la República , Montevideo , Uruguay
| | - Maria Verónica Césio
- d Cátedra de Farmacognosia y Productos Naturales, Facultad de Química , Universidad de la República , Montevideo , Uruguay
| | - Horácio Heinzen
- d Cátedra de Farmacognosia y Productos Naturales, Facultad de Química , Universidad de la República , Montevideo , Uruguay
| | - Dinara Jaqueline Moura
- e Laboratório de Genética Toxicológica , Universidade Federal de Ciências da Saúde de Porto Alegre , Porto Alegre , Rio Grande do Sul , Brazil
| | - Jenifer Saffi
- e Laboratório de Genética Toxicológica , Universidade Federal de Ciências da Saúde de Porto Alegre , Porto Alegre , Rio Grande do Sul , Brazil
| | - Mirian Salvador
- c Instituto de Biotecnologia, Universidade de Caxias do Sul , Caxias do Sul , Rio Grande do Sul , Brazil
| | - João Antonio Pêgas Henriques
- a Departamento de Biofísica/Centro de Biotecnologia , Instituto de Biociências, Universidade Federal do Rio Grande do Sul) , Porto Alegre , Rio Grande do Sul , Brazil
- c Instituto de Biotecnologia, Universidade de Caxias do Sul , Caxias do Sul , Rio Grande do Sul , Brazil
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