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Zhang Z, Yang Z, Wu Y, Yuan Z, Du J, Li L. Reduced amino acid Schiff base containing ruthenium(III) complexes: Synthesis, characterization, DNA interaction, and in vitro cytotoxicity. J Biochem Mol Toxicol 2020; 34:e22510. [PMID: 32314490 DOI: 10.1002/jbt.22510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/01/2020] [Accepted: 03/26/2020] [Indexed: 12/22/2022]
Abstract
A number of reduced amino Schiff base ligands and corresponding ruthenium(III) complexes were designed and prepared based on the fact that amino acids not only possess multiple coordinate atoms but also improve the solubility of drugs in the body. The interaction of the complexes with calf thymus DNA was analyzed with spectroscopic methods of ultraviolet-visible absorption spectra, DNA competitive binding with ethidium bromide, circular dichroism spectra, and DNA melting experiments, and DNA viscosity measurements, indicating that the complexes bind to DNA primarily in the grooving mode. With respect to the ligands, the cytotoxicity in vitro of the complexes against Hela, A549, and MCF-7 cells was much enhanced, with most of the IC50 values less than 50 μM or even comparable with those of cisplatin.
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Affiliation(s)
- Zhaokuo Zhang
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, China
| | - Ziwei Yang
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, China
| | - Yujing Wu
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, China
| | - Zhen Yuan
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, China
| | - Jianlong Du
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, China
| | - Lijun Li
- Chemical Biology Key Laboratory of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, China
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de Araújo Neto LN, de Lima MDCA, de Oliveira JF, de Souza ER, Feitosa Machado SE, de Souza Lima GM, Silva Buonafina MD, Brayner FA, Alves LC, Sandes JM, da Silva MV, de Castro MCAB, Pereira Neves R, Bezerra Mendonça-Junior FJ. Thiophene-thiosemicarbazone derivative (L10) exerts antifungal activity mediated by oxidative stress and apoptosis in C. albicans. Chem Biol Interact 2020; 320:109028. [PMID: 32119865 DOI: 10.1016/j.cbi.2020.109028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/23/2020] [Accepted: 02/25/2020] [Indexed: 11/26/2022]
Abstract
Reactive oxygen species (ROS) cause cell damage and death. To reverse these effects, cells produce substances such as reduced glutathione (GSH) that serve as substrates for antioxidant enzymes. One way to combat microbial resistance includes nullifying the effect of glutathione in microbial cells, causing them to die from oxidative stress. The compound 2-((5-nitrothiophen-2-yl)methylene)-N-(pyridin-3-yl) hydrazine carbothioamide (L10) is a new thiophene-thiosemicarbazone derivative with promising antifungal activity. The aim of this study was to evaluate its mechanism of action against Candida albicans using assays that evaluate its effects on redox balance. Treatment with L10 promoted significant changes in the minimum inhibitory concentration (MIC) values in ascorbic acid and GSH protection tests, the latter increasing up to 64-fold of the MIC. Using nuclear magnetic resonance, we demonstrated interaction of L10 and GSH. At concentrations of 4.0 and 8.0 μg/mL, significant changes were observed in ROS production and mitochondrial membrane potential. The cell death profile showed characteristics of initial apoptosis at inhibitory concentrations (4.0 μg/mL). Transmission electron microscopy data corroborated these results and indicated signs of apoptosis, damage to plasma and nuclear membranes, and to mitochondria. Taken together, these results suggest a possible mechanism of action for L10 antifungal activity, involving changes in cellular redox balance, ROS production, and apoptosis-compatible cellular changes.
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Affiliation(s)
- Luiz Nascimento de Araújo Neto
- Medical Mycology Laboratory, Federal University of Pernambuco, 50670-901, Brazil; Chemistry Laboratory and Therapeutic Innovation, Federal University of Pernambuco, 50670-901, Brazil
| | | | | | - Edson Rubhens de Souza
- Chemistry Laboratory and Therapeutic Innovation, Federal University of Pernambuco, 50670-901, Brazil
| | | | | | | | - Fábio André Brayner
- Aggeu Magalhães Institute- IAM/FIOCRUZ and Imunopatology Keizo Asami Laboratory-LIKA/ Federal University of Pernambuco, 50670-901, Brazil
| | - Luiz Carlos Alves
- Aggeu Magalhães Institute- IAM/FIOCRUZ and Imunopatology Keizo Asami Laboratory-LIKA/ Federal University of Pernambuco, 50670-901, Brazil
| | - Jana Messias Sandes
- Aggeu Magalhães Institute- IAM/FIOCRUZ and Imunopatology Keizo Asami Laboratory-LIKA/ Federal University of Pernambuco, 50670-901, Brazil
| | | | - Maria Carolina Accioly Brelaz de Castro
- Laboratory of Immunology IAM/ FIOCRUZ, Federal University of Pernambuco, 50670-901, Brazil; Laboratory of Parasitology, Academic Center of Vitória - Federal University of Pernambuco, 55608-680, Brazil
| | - Rejane Pereira Neves
- Medical Mycology Laboratory, Federal University of Pernambuco, 50670-901, Brazil.
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Munikumari G, Konakanchi R, Nishtala VB, Ramesh G, Kotha LR, Chandrasekhar KB, Ramachandraiah C. Palladium(II) complexes of 5-substituted isatin thiosemicarbazones: Synthesis, spectroscopic characterization, biological evaluation and in silico docking studies. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2018.1546400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Gandham Munikumari
- Department of Chemistry, Sreekalahasteeswara Institute of Technology (SKIT) , Srikalahasti , AP , India
| | - Ramaiah Konakanchi
- Department of Chemistry, National Institute of Technology , Warangal , TS , India
| | | | - Gondru Ramesh
- Department of Chemistry, National Institute of Technology , Warangal , TS , India
| | - Laxma Reddy Kotha
- Department of Chemistry, National Institute of Technology , Warangal , TS , India
| | - K. B. Chandrasekhar
- Department of Chemistry, Jawaharlal Nehru Technological University , Ananthapur , AP , India
| | - Chennuru Ramachandraiah
- Department of Chemistry, Sreekalahasteeswara Institute of Technology (SKIT) , Srikalahasti , AP , India
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[2 × 2] Molecular Grids of Ni(II) and Zn(II) with Redox-Active 1,4-Pyrazine-Bis(thiosemicarbazone) Ligands. INORGANICS 2018. [DOI: 10.3390/inorganics6020051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Li Y, Shi W, Ma J, Wang X, Kong X, Zhang Y, Feng L, Hui Y, Xie Z. A novel optical probe for Hg 2+ in aqueous media based on mono-thiosemicarbazone Schiff base. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.01.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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