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de Bastos DR, Conceição MPF, Michelli APP, Leite JMRS, da Silva RA, Cintra RC, Sanchez JJD, Vilanova-Costa CAST, Silva AMTC. An In Silico Analysis Identified FZD9 as a Potential Prognostic Biomarker in Triple-Negative Breast Cancer Patients. Eur J Breast Health 2020; 17:42-52. [PMID: 33796830 DOI: 10.4274/ejbh.2020.5804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 09/27/2020] [Indexed: 12/24/2022]
Abstract
Objective Breast cancer (BC) is the main cause of cancer-related deaths in women across the world. It can be classified into different subtypes, including triple-negative (TN), which is characterized by the absence of hormone receptors for estrogen and progesterone and the lack of the human epidermal growth factor receptor 2. These tumors have high heterogeneity, acquire therapeutic resistance, and have no established target-driven treatment yet. The identification of differentially expressed genes in TN breast tumors and the in silico validation of their prognostic role in these tumors. Materials and Methods We employed a microarray dataset and, by using the GEO2R tool, we identified a list of differentially expressed genes. The in silico validation was conducted using several online platforms including the KM Plotter, cBioPortal, bc-GenExMiner, Prognoscan, and Roc Plotter. Results We observed that FZD9 was among the top differentially expressed genes in a cohort of patients with different TNBC subtypes. The FZD9 expression was significantly different in TN breast tumors than in non-TN (nTN) breast tumors (p<0.0001), and the basal TN subtype showed the highest levels (p<0.0001). In addition, the FZD9 levels were significantly inversely and positively proportional (p<0.0001) to estrogen receptor, progesterone receptor, and human epidermal growth factor receptor-2 clinical parameters. The high levels of FZD9 were associated with worse overall survival (p=0.007), relapse-free survival (p=5.8e-05), and worse survival in patients who received chemotherapy (p=3.2e-05; 0.007). Conclusion Our cumulative results demonstrated that FZD9 plays an important role in TNBC and may be a potential prognostic biomarker. Nevertheless, further in vitro and in vivo assays are necessary to confirm our findings and to strengthen the evidences about the mechanisms by which FZD9 functions in these tumors.
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Affiliation(s)
| | | | - Ana Paula Picaro Michelli
- Department of Biological Sciences, Thyroid Molecular Science Laboratory, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Rafael André da Silva
- Department of Cellular & Developmental Biology, Universidade de São Paulo, Institute of Biomedical Sciences, São Paulo, Brazil
| | - Ricardo Cesar Cintra
- Department of Biochemistry, Universidade de São Paulo, Institute of Chemistry, São Paulo, Brazil
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2
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Mundim AEDFM, de Castro FDOFD, Albuquerque MBB, Vilanova-Costa CAST, Pfrimer IAH, Silva AMTC. Major mutations in the NS3 gene region of hepatitis C virus related to the resistance to direct acting antiviral drugs: a systematic review. Virusdisease 2020; 31:220-228. [PMID: 32904849 DOI: 10.1007/s13337-020-00616-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 07/20/2020] [Indexed: 10/23/2022] Open
Abstract
Hepatitis C virus (HCV) remains a global public health problem with high prevalence rates and chronicity of infection. Present work aimed to describe the main mutations in the NS3 region of the HCV genome related to the resistance of patients to the currently available direct-acting antivirals (DAAs). To guide the study description, the preferred items in the PRISMA protocol for systematic review were used. The data collected were HCV genotypes and subtypes and mutations in HCV NS3, general and stratified by continent. The 10 papers selected for this systematic review reported studies in seven countries, on three continents, and generated data of 2937 patients. The most frequent HCV subtype was 1a. Prevalence of genotypes suggested that there were few demographic regions reached by the studies, since there were regional variations in the type of genotypes reported in the available bibliographies. Of the total study population, 35.3% (n = 1037) had mutations in the NS3 gene region of HCV, suggesting a high rate of resistance to DAAs and a low sustained virologic response among those who used some therapeutic option. Ten major mutations were identified: Q80K, V170I, S122G, V36L, T54S, D168Q, A156S, Q80G, S122R, and V55A. The Q80K mutation was the highlight of the study, appearing not only with greater representativity (61.6%) but also as the only one described in the three continents analyzed. This systematic review reinforces the need to carry out more studies of detection of these mutations to fill in all information gaps that might help in optimization of treatment.
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Affiliation(s)
- Ana Elisa de Figueiredo Miranda Mundim
- Programa de Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Avenida Universitária 1.440, Setor Universitário, Campus 1, Área 4, Goiânia, GO CEP: 74605-010 Brazil
| | - Fernanda de Oliveira Feitosa de de Castro
- Programa de Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Avenida Universitária 1.440, Setor Universitário, Campus 1, Área 4, Goiânia, GO CEP: 74605-010 Brazil
| | - Marina Brandão Braz Albuquerque
- Programa de Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Avenida Universitária 1.440, Setor Universitário, Campus 1, Área 4, Goiânia, GO CEP: 74605-010 Brazil
| | | | - Irmtraut Araci Hoffmann Pfrimer
- Programa de Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Avenida Universitária 1.440, Setor Universitário, Campus 1, Área 4, Goiânia, GO CEP: 74605-010 Brazil
| | - Antonio Márcio Teodoro Cordeiro Silva
- Programa de Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Avenida Universitária 1.440, Setor Universitário, Campus 1, Área 4, Goiânia, GO CEP: 74605-010 Brazil
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3
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Cunha DDO, Leão-Cordeiro JAB, Paula HDSCD, Ataides FS, Saddi VA, Vilanova-Costa CAST, Silva AMTC. Association between polymorphisms in the genes encoding toll-like receptors and dectin-1 and susceptibility to invasive aspergillosis: a systematic review. Rev Soc Bras Med Trop 2019; 51:725-730. [PMID: 30517524 DOI: 10.1590/0037-8682-0314-2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/07/2018] [Indexed: 11/21/2022] Open
Abstract
Invasive aspergillosis is a common fungal infection in immunocompromised individuals. Some studies have shown that toll-like receptor and dectin-1 genetic polymorphisms may alter signaling pathways, thus increasing an individual's susceptibility to invasive aspergillosis. We investigated the pertinent literature to determine whether polymorphisms in the genes encoding toll-like receptors and dectin-1 increase the susceptibility to invasive aspergillosis. This study systematically reviewed the literature using the databases PubMed/PMC, Scopus, and Web of Science using the keywords invasive aspergillosis, polymorphism, Toll-like, and Dectin-1. From the initial search, 415 studies were found and according to our inclusion and exclusion criteria, eight studies were selected. Several studies described single-nucleotide polymorphisms (SNPs) that are associated with a greater susceptibility to invasive aspergillosis. These SNPs were found in the genes that encode toll-like receptors 1, 3, 4, and 5 and the gene that encodes dectin-1; upon activation, both cellular receptors initiate a signaling cascade that can result in the production of cytokines and chemokines. Thus, our literature review uncovered a significant association between polymorphisms in the genes that encode toll-like receptors and dectin-1 and invasive aspergillosis. More studies should be performed to better understand the relationship between toll-like receptor and dectin-1 genetic polymorphisms and invasive aspergillosis susceptibility.
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Affiliation(s)
- Daiane de Oliveira Cunha
- Programa Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brasil
| | | | | | - Fábio Silvestre Ataides
- Escola de Ciências Médicas, Farmacêuticas e Biomédicas, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brasil
| | - Vera Aparecida Saddi
- Programa Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brasil.,Escola de Ciências Médicas, Farmacêuticas e Biomédicas, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brasil
| | | | - Antonio Márcio Teodoro Cordeiro Silva
- Programa Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brasil.,Escola de Ciências Médicas, Farmacêuticas e Biomédicas, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brasil
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Vilanova-Costa CAST, Porto HKP, Pereira LCG, Carvalho BP, Dos Santos WB, Silveira-Lacerda EDP. MDR1 and cytochrome P450 gene-expression profiles as markers of chemosensitivity in human chronic myelogenous leukemia cells treated with cisplatin and Ru(III) metallocomplexes. Biol Trace Elem Res 2015; 163:39-47. [PMID: 25253429 DOI: 10.1007/s12011-014-0133-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 09/16/2014] [Indexed: 01/11/2023]
Abstract
Leukemia is a major type of cancer affecting a significant segment of the population, and especially children. In fact, leukemia is the most frequent childhood cancer, with 26 % of all cases, and 20 % mortality. The multidrug resistance phenotype (MDR) is considered one of the major causes of failure in cancer chemotherapy. The present study aimed to investigate the relationship between the expression of MDR1 and CYP450 genes in human chronic myelogenous leukemia cells (K-562) treated with cisplatin (cisPt) and two ruthenium-based coordinated complexes [cisCRu(III) and cisDRu(III)]. The tested compounds induced apoptosis in K-562 tumor cells as evidenced by caspase 3 activation. Results also revealed that the amplification of P-gp gene is greater in K-562 cells exposed to cisPt and cisCRu(III) than cisDRu(III). Taken together, all these results strongly demonstrate that MDR-1 overexpression in K-562 cells could be associated to a MDR phenotype, and moreover, it is also contributing to the platinum and structurally related compound, resistance in these cells.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/biosynthesis
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Apoptosis/drug effects
- Cisplatin/pharmacology
- Cytochrome P-450 Enzyme System/biosynthesis
- Drug Resistance, Multiple/drug effects
- Drug Resistance, Neoplasm/drug effects
- Gene Expression Regulation, Leukemic/drug effects
- Humans
- K562 Cells
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Ruthenium/pharmacology
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Affiliation(s)
- Cesar Augusto Sam Tiago Vilanova-Costa
- Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas - ICB, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO, 74001-970, Brazil,
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5
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Gonçalves ML, Borja SM, Cordeiro JABL, Saddi VA, Ayres FM, Vilanova-Costa CAST, Silva AMTC. Association of the TP53 codon 72 polymorphism and breast cancer risk: a meta-analysis. Springerplus 2014; 3:749. [PMID: 26034701 PMCID: PMC4447735 DOI: 10.1186/2193-1801-3-749] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 01/10/2023]
Abstract
This study was conducted in order to investigate the implications of the R72P polymorphism in the TP53 gene in breast cancer risk. The enlightenment of this matter might provide a piece of information about the potential implications of this polymorphism in patient risk. A meta-analysis was conducted considering a large sample size from studies with conflicting results on the R72P polymorphism in breast cancer patients. Relevant studies were selected from PubMed and SciELO databases for data extraction and statistical analysis. Database was built according to the continent and considering the genotype frequencies, sample size and genotyping methodology. The dominant models (RR vs RP + PP and RR + RP vs. PP), homozygous (RR vs. PP), heterozygous (RR vs. RP and RP vs. PP) and the allele (R vs. P) were used. Genotype frequencies were summarized and evaluated by χ2 test of heterogeneity in 2×2 contingency tables with 95% CIs. Odds Ratios (OR) were calculated with a fixed-effect model (Mantel-Haenszel) or a random-effect model (DerSimonian-Laird) if the studies were considered homogeneous (P > 0.05) or heterogeneous (P < 0.05), respectively, using BioEstat® 5.0 software. Supported by a large sample size composed by 25,629 cases and 26,633 controls from 41 studies, we found significant association between the R72P polymorphism in the TP53 gene and the breast cancer risk. The overall data shows an increased risk due to the P allele dominant model, but not in Asia where the risk was associated with the R allele and R dominant model.
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Affiliation(s)
- Meire Luzia Gonçalves
- Departamento de Medicina, Pontifícia Universidade Católica de Goiás, Av. Universitária 1.069, Setor Universitário, Goiânia, Goiás CEP 74.605-010 Brazil
| | - Sarah Moreira Borja
- Departamento de Medicina, Pontifícia Universidade Católica de Goiás, Av. Universitária 1.069, Setor Universitário, Goiânia, Goiás CEP 74.605-010 Brazil
| | | | - Vera Aparecida Saddi
- Departamento de Medicina, Pontifícia Universidade Católica de Goiás, Av. Universitária 1.069, Setor Universitário, Goiânia, Goiás CEP 74.605-010 Brazil ; Laboratório de Oncogenética e Radiobiologia, Hospital Araújo Jorge, Associação de Combate ao Câncer em Goiás, Goiânia, Goiás CEP 74605-070 Brazil ; Programa de Pós-Graduação Stricto Sensu em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Goiânia, Goiás CEP 74065-140 Brazil
| | - Flávio Monteiro Ayres
- Unidade Universitária de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, Anápolis, Goiás CEP 75132-400 Brazil
| | | | - Antonio Márcio Teodoro Cordeiro Silva
- Departamento de Medicina, Pontifícia Universidade Católica de Goiás, Av. Universitária 1.069, Setor Universitário, Goiânia, Goiás CEP 74.605-010 Brazil ; Programa de Pós-Graduação Stricto Sensu em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Goiânia, Goiás CEP 74065-140 Brazil
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6
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Pereira FDC, de Lima AP, Vilanova-Costa CAST, Pires WC, Ribeiro ADSBB, Pereira LCG, Pavanin LA, dos Santos WB, Silveira-Lacerda EDP. Cytotoxic effects of the compound cis-tetraammine(oxalato)ruthenium(III) dithionate on K-562 human chronic myelogenous leukemia cells. Springerplus 2014; 3:301. [PMID: 25019046 PMCID: PMC4082535 DOI: 10.1186/2193-1801-3-301] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 04/23/2014] [Indexed: 12/29/2022]
Abstract
Chemotherapy is a common treatment for leukemia. Ruthenium complexes have shown potential utility in chemotherapy and photodynamic therapy. The identification of new chemotherapeutics agents is critical for further progress in the treatment of leukemia. Ruthenium complexes generally have lower toxicities compared to cisplatin attributed to their specific accumulation in cancer tissues. Based on these evidences, in the present work we studied the cytotoxic activity of the ruthenium(III) compound cis-tetraammine(oxalato)ruthenium(III) dithionate - {cis-[Ru(C2O4)(NH3)4]2(S2O6)} against human chronic myelogenous leukemia cells (K-562) tumor cell line. The tested compound induces cell death in a dose and time dependent manner on K-562 cells. It is found that the effect was improved linearly while prolonging the incubation time. Compared to the cell cycle profiles of untreated cells, flow cytometric analysis indicated the sub-G1 arresting effect of ruthenium compound on K-562 cells. In our study, {cis-[Ru(C2O4)(NH3)4]2(S2O6)} shows a significant increase in tailed cells in any of the concentrations tested compared with negative control. Consequently, the concentration of {cis-[Ru(C2O4)(NH3)4]2(S2O6)} might be associated cytotoxicity with direct effect on K-562 cells DNA. Thus, it can be deducted that ruthenium-based compounds present selectivity to enter both tumor and normal cells. Additional studies are needed to determine the molecular mechanisms of the active components and to evaluate the potential in vivo anticancer activity of the cis-tetraammine(oxalato)ruthenium(III) dithionate.
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Affiliation(s)
- Flávia de Castro Pereira
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
| | - Aliny Pereira de Lima
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
| | - Cesar Augusto Sam Tiago Vilanova-Costa
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
| | - Wanessa Carvalho Pires
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
| | - Alessandra de Santana Braga Barbosa Ribeiro
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
| | - Lucas Carlos Gomes Pereira
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
| | - Luiz Alfredo Pavanin
- />Instituto de Química, Universidade Federal de Uberlândia - UFU, Uberlândia, MG 38400-902 Brazil
| | - Wagner Batista dos Santos
- />Instituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso - UFMT, Barra do Garças, MT 78698-000 Brazil
| | - Elisângela de Paula Silveira-Lacerda
- />Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas, Universidade Federal de Goiás - UFG, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, GO 74001-970 Brazil
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7
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de Lima AP, Pereira FDC, Vilanova-Costa CAST, Soares JR, Pereira LCG, Porto HKP, Pavanin LA, Dos Santos WB, Silveira-Lacerda EDP. Induction of cell cycle arrest and apoptosis by ruthenium complex cis-(dichloro)tetramineruthenium(III) chloride in human lung carcinoma cells A549. Biol Trace Elem Res 2012; 147:8-15. [PMID: 22144016 DOI: 10.1007/s12011-011-9275-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Accepted: 11/13/2011] [Indexed: 10/15/2022]
Abstract
Lung cancer is one of the leading causes of death in the world, and non-small cell lung carcinoma (NSCLC) accounts for approximately 75-85% of all lung cancers. In the present work, we studied the cytotoxic activity, cell cycle arrest and induction apoptosis of the compound cis-(dichloro)tetramineruthenium(III) chloride {cis-[RuCl(2)(NH(3))(4)]Cl} in human lung carcinoma tumor cell line A549. The results of MTT and trypan blue assays showed that cis-[RuCl(2)(NH(3))(4)]Cl causes reduction in the viability of A549 cells when treating with 95 and 383 μM of the compound for 48 and 72 h. Lower concentrations of the compound (19, 3.8 and 0.38 μM), however, only slightly affected cell viability. The IC(50) value for the compound was about 383 μM. Survival analysis of the A549 cells after treatment with ruthenium(III) compound using long term clonogenic assay showed that it reduced colony formation ability at concentrations of 0.38 and 3.8 μM, and at concentrations of 95 and 383 μM no colonies were observed. Cell cycle analysis showed that compound ruthenium led to an accumulation of A549 cells in S phase and increased in the sub-G1 peak. In addition, cis-(dichloro)tetramineruthenium(III) chloride treatment induced apoptosis, as observed by the increased numbers of annexin V-positive cells and increased messenger RNA expression of caspase-3.
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Affiliation(s)
- Aliny Pereira de Lima
- Instituto de Ciências Biológicas-ICB I- Sala 200- UFG, Campus Samambaia (Campus II), Universidade Federal de Goiás-UFG, Goiânia, Goiás, Brazil.
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Silveira-Lacerda EDP, Vilanova-Costa CAST, Hamaguchi A, Pavanin LA, Goulart LR, Homsi-Brandenburgo MI, Dos Santos WB, Soares AM, Nomizo A. The ruthenium complex cis-(dichloro)tetraammineruthenium(III) chloride presents selective cytotoxicity against murine B cell lymphoma (A-20), murine ascitic sarcoma 180 (S-180), human breast adenocarcinoma (SK-BR-3), and human T cell leukemia (Jurkat) tumor cell lines. Biol Trace Elem Res 2010; 135:98-111. [PMID: 19727575 DOI: 10.1007/s12011-009-8498-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Accepted: 08/06/2009] [Indexed: 11/30/2022]
Abstract
The aim of present study was to verify the in vitro antitumor activity of a ruthenium complex, cis-(dichloro)tetraammineruthenium(III) chloride (cis-[RuCl(2)(NH(3))(4)]Cl) toward different tumor cell lines. The antitumor studies showed that ruthenium(III) complex presents a relevant cytotoxic activity against murine B cell lymphoma (A-20), murine ascitic sarcoma 180 (S-180), human breast adenocarcinoma (SK-BR-3), and human T cell leukemia (Jurkat) cell lines and a very low cytotoxicity toward human peripheral blood mononuclear cells. The ruthenium(III) complex decreased the fraction of tumor cells in G0/G1 and/or G2-M phases, indicating that this compound may act on resting/early entering G0/G1 cells and/or precycling G2-M cells. The cytotoxic activity of a high concentration (2 mg mL(-1)) of cis-[RuCl(2)(NH(3))(4)]Cl toward Jurkat cells correlated with an increased number of annexin V-positive cells and also the presence of DNA fragmentation, suggesting that this compound induces apoptosis in tumor cells. The development of new antineoplastic medications demands adequate knowledge in order to avoid inefficient or toxic treatments. Thus, a mechanistic understanding of how metal complexes achieve their activities is crucial to their clinical success and to the rational design of new compounds with improved potency.
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Affiliation(s)
- Elisângela de Paula Silveira-Lacerda
- Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas-ICB I-Sala 200, Universidade Federal de Goiás-UFG, Campus Samambaia Campus II, Goiânia, Goiás, Brazil.
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9
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Silveira-Lacerda EDP, Vilanova-Costa CAST, Pereira FDC, Hamaguchi A, Pavanin LA, Goulart LR, Homsi-Brandenburgo MI, Soares AM, dos Santos WB, Nomizo A. The ruthenium complex cis-(Dichloro)Tetraammineruthenium(III) chloride presents immune stimulatory activity on human peripheral blood mononuclear cells. Biol Trace Elem Res 2010; 133:270-83. [PMID: 19590831 DOI: 10.1007/s12011-009-8440-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Accepted: 06/22/2009] [Indexed: 11/28/2022]
Abstract
Ruthenium compounds in general are well suited for medicinal applications. They have been investigated as immunosuppressants, nitric oxide scavengers, antimicrobial agents, and antimalarials. The aim of this study is to evaluate the immunomodulatory activity of cis-(dichloro)tetraammineruthenium(III) chloride (cis-[RuCl(2)(NH(3))(4)]Cl) on human peripheral blood mononuclear cells (PBMC). The cytotoxic studies performed here revealed that the ruthenium(III) complex presents a cytotoxic activity towards normal human PBMC, only at very high concentration. Results also showed that cis-[RuCl(2)(NH(3))(4)]Cl presents a dual role on PBMC stimulating proliferation and interleukin-2 (IL-2) production at low concentration and inducing cytotoxicity, inability to proliferate, and inhibiting IL-2 production at high concentration. The noncytotoxic activity of cis-[RuCl(2)(NH(3))(4)]Cl at low concentration towards PBMC, which correlates with the small number of annexin V positive cells and also the absence of DNA fragmentation, suggest that this compound does not induce apoptosis on PBMC. For the first time, we show that, at low concentration (10-100 microg L(-1)), the cis-[RuCl(2)(NH(3))(4)]Cl compound induces peripheral blood lymphocytes proliferation and also stimulates them to IL-2 production. These results open a new potential applicability of ruthenium(III) complexes as a possible immune regulatory compound acting as immune suppressor at high concentration and as immune stimulator at low concentration.
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Affiliation(s)
- Elisângela de Paula Silveira-Lacerda
- Laboratório de Genética Molecular e Citogenética, Instituto de Ciências Biológicas (ICB I), Universidade Federal de Goiás, Sala 200, Campus Samambaia (Campus II), Cx. Postal: 131, Goiânia, Goiás, Brazil.
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Ribeiro ADSBB, da Silva CC, Pereira FDC, Lima APD, Vilanova-Costa CAST, Aguiar SS, Pavanin LA, da Cruz AD, Silveira-Lacerda EDP. Mutagenic and genotoxic effects of cis-(dichloro)tetraammineruthenium(III) chloride on human peripheral blood lymphocytes. Biol Trace Elem Res 2009; 130:249-61. [PMID: 19214395 DOI: 10.1007/s12011-009-8334-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Accepted: 01/28/2009] [Indexed: 02/04/2023]
Abstract
Chemotherapeutic agents play an important role in cancer treatment mostly due their systemic action on human organism allowing access to liquid tumors and even metastases. Among these drugs, ruthenium compounds have been showing promising results to treat tumors and represent an important development of new antitumor therapy. This study presents the evaluation of cis-(dichloro)tetraammineruthenium(III) chloride, cis-[RuCl(2)(NH(3))(4)]Cl, genotoxic effects using human peripheral blood lymphocytes cultured in vitro. Mitotic index (MI), chromosome aberrations (CA), and DNA damage using the comet assay were analyzed. MI in human peripheral blood lymphocyte cultures treated with 1, 10, 100, and 1,000 microg mL(-1) cis-[RuCl(2)(NH(3))(4)]Cl were 5.9%, 4.6%, 3.9%, and 0%, respectively. Doxorubicin chloridate was used as the positive control. CA derived from 1, 10, and 100 microg mL(-1) concentrations were defined as spontaneous when compared with the negative control, and at the concentration of 1,000 microg mL(-1), the cell cycle was inhibited (IM = 0%). Results obtained for the comet assay using cis-[RuCl(2)(NH(3))(4)]Cl suggest that this compound has no genotoxic activity against cultured human peripheral blood lymphocytes.
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Pereira FDC, Vilanova-Costa CAST, de Lima AP, Ribeiro ADSBB, da Silva HD, Pavanin LA, Silveira-Lacerda EDP. Cytotoxic and genotoxic effects of cis-tetraammine(oxalato)ruthenium(III) dithionate on the root meristem cells of Allium cepa. Biol Trace Elem Res 2009; 128:258-68. [PMID: 19020813 DOI: 10.1007/s12011-008-8272-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2008] [Accepted: 10/29/2008] [Indexed: 11/29/2022]
Abstract
Ruthenium complexes have attracted much attention as possible building blocks for new transition-metal-based antitumor agents. The present study examines the mitotoxic and clastogenic effects induced in the root tips of Allium cepa by cis-tetraammine(oxalato)ruthenium(III) dithionate {cis-[Ru(C(2)O(2))(NH(3))(4)](2)(S(2)O(6))} at different exposure durations and concentrations. Correlation tests were performed to determine the effects of the time of exposure and concentration of ruthenium complex on mitotic index (MI) and mitotic aberration index. A comparison of MI results of cis-[Ru(C(2)O(2))(NH(3))(4)](2)(S(2)O(6)) to those of lead nitrate reveals that the ruthenium complex demonstrates an average mitotic inhibition eightfold higher than lead, with the frequency of cellular abnormalities almost fourfold lower and mitotic aberration threefold lower. A. cepa root cells exposed to a range of ruthenium complex concentrations did not display significant clastogenic effects. Cis-tetraammine(oxalato)ruthenium(III) dithionate therefore exhibits a remarkable capacity to inhibit mitosis, perhaps by inhibiting DNA synthesis or blocking the cell cycle in the G2 phase. Further investigation of the mechanisms of action of this ruthenium complex will be important to define its clinical potential and to contribute to a novel and rational approach to developing a new metal-based drug with antitumor properties complementary to those exhibited by the drugs already in clinical use.
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Affiliation(s)
- Flávia de Castro Pereira
- Instituto de Ciências Biológicas, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil.
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Silva AMTC, Vilanova-Costa CAST, de Oliveira SF, da Silva CC, Curado MP, da Cruz AD. WITHDRAWN: Human papillomavirus detection and genotyping in squamous cell carcinomas of the larynx. J Virol Methods 2009; 157:231. [DOI: 10.1016/j.jviromet.2008.06.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Revised: 06/20/2008] [Accepted: 06/25/2008] [Indexed: 11/28/2022]
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