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Khan GH, Veltkamp F, Scheper M, Hoebe RA, Claessen N, Butter L, Bouts AHM, Florquin S, Guikema JEJ. Levamisole suppresses activation and proliferation of human T cells by the induction of a p53-dependent DNA damage response. Eur J Immunol 2023; 53:e2350562. [PMID: 37597325 DOI: 10.1002/eji.202350562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/17/2023] [Accepted: 08/18/2023] [Indexed: 08/21/2023]
Abstract
Levamisole (LMS) is a small molecule used in the treatment of idiopathic nephrotic syndrome (INS). The pathogenesis of INS remains unknown, but evidence points toward an immunological basis of the disease. Recently, LMS has been shown to increase the relapse-free survival in INS patients. While LMS has been hypothesized to exert an immunomodulatory effect, its mechanism of action remains unknown. Here, we show that LMS decreased activation and proliferation of human T cells. T-cell activation-associated cytokines such as IL-2, TNF-α, and IFN-γ were reduced upon LMS treatment, whereas IL-4 and IL-13 were increased. Gene expression profiling confirmed that the suppressive effects of LMS as genes involved in cell cycle progression were downregulated. Furthermore, genes associated with p53 activation were upregulated by LMS. In agreement, LMS treatment resulted in p53 phosphorylation and increased expression of the p53 target gene FAS. Accordingly, LMS sensitized activated T cells for Fas-mediated apoptosis. LMS treatment resulted in a mid-S phase cell cycle arrest accompanied by γH2AX-foci formation and phosphorylation of CHK1. Our findings indicate that LMS acts as an immunosuppressive drug that directly affects the activation and proliferation of human T cells by induction of DNA damage and the activation of a p53-dependent DNA damage response.
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Affiliation(s)
- Gerarda H Khan
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Floor Veltkamp
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Pediatric Nephrology, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Mirte Scheper
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Ron A Hoebe
- Department of Medical Biology, Amsterdam UMC and Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Nike Claessen
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Loes Butter
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Antonia H M Bouts
- Department of Pediatric Nephrology, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Sandrine Florquin
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jeroen E J Guikema
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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2
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Serpeloni JM, Ribeiro DL, Weiss GF, de Oliveira LCB, Fujiike AY, Nunes HL, da Rocha CQ, Guembarovski RL, Cólus IMDS. Flavonoid brachydin B decreases viability, proliferation, and migration in human metastatic prostate (DU145) cells grown in 2D and 3D culture models. Toxicol Res (Camb) 2023; 12:321-331. [PMID: 37125333 PMCID: PMC10141769 DOI: 10.1093/toxres/tfad019] [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: 12/15/2022] [Revised: 03/01/2023] [Accepted: 03/12/2023] [Indexed: 04/05/2023] Open
Abstract
Brachydin B (BrB) is a unique dimeric flavonoid extracted from Fridericia platyphylla (Cham.) LG Lohmann with different biological activities. However, the antitumoral potential of this flavonoid is unclear. In our study, we evaluated the effects of the BrB flavonoid on cell viability (MTT, resazurin, and lactate dehydrogenase assays), proliferation (protein dosage and clonogenic assay), and migration/invasion (3D ECM gel, wound-healing, and transwell assays) of metastatic prostate (DU145) cells cultured both as traditional 2D monolayers and 3D tumor spheroids in vitro. The results showed that the BrB flavonoid promotes cytotoxic effects from ≥1.50 μM after 24 h of treatment in DU145 cells in monolayers. In 3D prostate tumor spheroids, BrB also induced cytotoxic effects at higher concentrations after longer treatment (48, 72, and 168 h). Furthermore, BrB treatment is associated with reduced DU145 clonogenicity in 2D cultures, as well as decreased area/volume of 3D tumor spheroids. Finally, BrB (6 μM) reduced cell migration/invasion in 2D monolayers and promoted antimigratory effects in DU145 tumor spheroids (≥30 μM). In conclusion, the antitumoral and antimigratory effects observed in DU145 cells cultured in 2D and 3D models are promising results for future studies with BrB using in vivo models and confirm this molecule as a candidate for metastatic prostate cancer therapy.
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Affiliation(s)
- Juliana Mara Serpeloni
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Paraná, 86057-970, Brazil
| | - Diego Luis Ribeiro
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Gabriela Fátima Weiss
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Paraná, 86057-970, Brazil
| | | | - Andressa Yuri Fujiike
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Paraná, 86057-970, Brazil
| | - Higor Lopes Nunes
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Paraná, 86057-970, Brazil
| | - Claudia Quintino da Rocha
- Department of Chemistry, Center for Exact Sciences and Technology, Federal University of Maranhão, São Luís, Maranhão, 65080-805, Brazil
| | - Roberta Losi Guembarovski
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Paraná, 86057-970, Brazil
| | - Ilce Mara de Syllos Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Paraná, 86057-970, Brazil
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3
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Davis AM, Scott TA, Morris KV. Harnessing Rift Valley fever virus NSs gene for cancer gene therapy. Cancer Gene Ther 2022; 29:1477-1486. [PMID: 35393569 PMCID: PMC8988100 DOI: 10.1038/s41417-022-00463-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/01/2022] [Accepted: 03/18/2022] [Indexed: 11/22/2022]
Abstract
One of the greatest challenges in the treatment of cancer is tumor heterogeneity which results in differential responses to chemotherapy and drugs that work through a single pathway. A therapeutic agent that targets cancer cells for death through multiple mechanisms could be advantageous as a broad inhibitor for many types of cancers and the heterogeneous alterations they possess. Several viral proteins have been exploited for antiproliferative and apoptotic effect in cancer cells by disrupting critical survival pathways. Here, we report the use of the non-structural protein on the S segment (NSs) gene from the Rift Valley fever virus (RVFV) to induce cancer cell death. NSs has immune evasion functions in the context of RVFV with many of these functions affecting proliferation pathways and DNA damage signaling, which could be leveraged against cancer cells. We find that expression of NSs in multiple cancer cell lines leads to a rapid decline in cell viability and induction of apoptosis. Interestingly, we observed reduced toxicity in normal cells suggesting cancer cells may be more susceptible to NSs-mediated cell death. To enhance specificity of NSs for use in hepatocellular carcinoma, we incorporated four miR-122 binding sites in the 3' untranslated region (UTR) of the NSs mRNA to achieve cell type specific expression. Observations presented here collectively suggest that delivery of the NSs gene may provide a unique therapeutic approach in a broad range of cancers.
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Affiliation(s)
- Alicia M Davis
- Center for Gene Therapy, Beckman Research Institute, City of Hope, Duarte, CA, USA
- Irell & Manella Graduate School of Biological Sciences, City of Hope, Duarte, CA, USA
| | - Tristan A Scott
- Center for Gene Therapy, Beckman Research Institute, City of Hope, Duarte, CA, USA.
| | - Kevin V Morris
- Menzies Health Institute Queensland, School of Pharmacy and Medical Science Griffith University, Gold Coast Campus, QLD 4222, Brisbane, Australia.
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4
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Serpeloni JM, Specian AFL, Ribeiro DL, Tuttis K, Heredia-Vieira SC, Vilegas W, Martínez-López W, Varanda EA, de Syllos Cólus IM. Selective anticancer effects of Serjania marginata Casar. extract in gastric cells are mediated by antioxidant response. ENVIRONMENTAL TOXICOLOGY 2021; 36:1544-1556. [PMID: 33885224 DOI: 10.1002/tox.23151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 03/17/2021] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
Gastric cancer is the fifth most common malignancy worldwide. Serjania marginata Casar. (SM) displays anti-inflammatory properties and has been used to treat gastrointestinal disorders. In the current study, we examined whether the hydroethanolic extract of SM leaves exerted cytotoxic, mutagenic, and protective effects in non-tumor gastric epithelium cells (MNP01) and gastric adenocarcinoma cells (ACP02) in vitro and analyzed whether its action was selective. Initially, cell viability (MTT assay), cell cycle kinetics (flow cytometry), and cell proliferation (total protein content) were analyzed. In addition, genomic instability (cytokinesis-block micronucleus cytome assay), anti/pro-oxidant status (CM-H2 DCFDA probe), and transcriptional expression (RT-qPCR) of genes related to cell cycle, cell death, and antioxidant defense were also evaluated. The SM extract was cytotoxic toward MNP01 and ACP02 cells at concentrations greater than 300 and 100 μg·ml-1 , respectively, and decreased protein content only toward ACP02 cells at 200 μg ml-1 . In ACP02 cells, the SM extract at 100 μg·ml-1 associated with doxorubicin (DXR; 0.2 μg ml-1 ) clearly promoted cell cycle arrest at the G2/M phase. The extract alone was not mutagenic to either cell type and reversed DXR-induced DNA damage and H2 O2 -induced oxidative stress in MNP01 cells. The gene expression experiments showed that SM hydroethanolic extract exerts an antioxidant response via NFE2L2 activation in non-tumor gastric cells, and cell cycle arrest (G2/M) in ACP02 gastric cancer cells via the TP53 pathway. The selective action of SM indicates that it is a promising therapeutic agent to treat gastric diseases and merits further studies.
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Affiliation(s)
- Juliana Mara Serpeloni
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - Ana Flavia Leal Specian
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - Diego Luis Ribeiro
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - Katiuska Tuttis
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | | | - Wagner Vilegas
- Experimental Campus of São Vicente, São Paulo State University (UNESP), São Vicente, Brazil
| | - Wilner Martínez-López
- Epigenetics and Genomic Instability Laboratory, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Eliana Aparecida Varanda
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - Ilce Mara de Syllos Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
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5
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Melo Bisneto AVD, Oliveira LCD, Silva Fernandes A, Silva LS, Véras JH, Cardoso CG, E Silva CR, de Moraes Filho AV, Carneiro CC, Chen-Chen L. Recombinogenic, genotoxic, and cytotoxic effects of azathioprine using in vivo assays. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:261-271. [PMID: 33372579 DOI: 10.1080/15287394.2020.1864692] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Azathioprine (Aza) is a purine antimetabolite immunosuppressant that is widely employed for immunosuppressive therapy in post-transplant recipients or patients with autoimmune diseases. Chronic use of immunosuppressants might produce several side effects, including a high rate of neoplasms in these patients. Considering that genotoxic effects are associated with an increased risk of developing cancer, the aim of this study was to examine the recombinogenic, genotoxic, and cytotoxic effects of Aza using Somatic Mutation and Recombination Test (SMART) in Drosophila melanogaster, as well as comet and micronucleus assays in mouse bone marrow cells. Further, the adverse effects of Aza were determined in mouse hepatic and renal tissues using histopathological analysis. Data demonstrated that Aza induced significant increased genotoxicity in D. melanogaster and mouse bone marrow cells at all concentrations tested. Homologous recombination was the predominant genotoxic event noted for the first time to be initiated by Aza in SMART. In histopathological analysis, Aza did not show any marked toxic activity in mouse hepatic and renal tissues. Therefore, the high rate of neoplasms reported in patients with long-term use of Aza may be attributed, at least partially, to the genotoxic action of this drug.
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Affiliation(s)
- A V D Melo Bisneto
- Laboratory of Radiobiology and Mutagenesis, Department of Genetics, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - L C D Oliveira
- Laboratory of Radiobiology and Mutagenesis, Department of Genetics, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - A Silva Fernandes
- Laboratory of Radiobiology and Mutagenesis, Department of Genetics, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - L S Silva
- Laboratory of Radiobiology and Mutagenesis, Department of Genetics, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - J H Véras
- Laboratory of Radiobiology and Mutagenesis, Department of Genetics, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - C G Cardoso
- Department of Morphology, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - Carolina R E Silva
- Department of Morphology, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
| | - A V de Moraes Filho
- Institute of Health Sciences, Alfredo Nasser University, Aparecida de Goiânia, Brazil
| | - C C Carneiro
- Institute of Health Sciences, Universidade Paulista, Campus Flamboyant, Goiânia, Brazil
| | - L Chen-Chen
- Laboratory of Radiobiology and Mutagenesis, Department of Genetics, Institute of Biological Sciences, Campus Samambaia, Federal University of Goiás, Goiânia, Brazil
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6
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Chen H, He X, Yu Y, Qian Y, Shen J, Zhao S. Execution of aggregation-induced emission as nano-sensors for hypochlorite detection and application for bioimaging in living cells and zebrafish. Talanta 2020; 214:120842. [PMID: 32278426 DOI: 10.1016/j.talanta.2020.120842] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 02/06/2023]
Abstract
Hypochlorite (ClO-) could be used as a diagnostic marker for inflammation and related diseases. Although there have been many reports on probes for ClO- imaging, there was still a lack of specificity and anti-interference ability. Herein, carbazole (NEC) and tetraphenylethylene (TPE) equipped with thiobarbituric acid (TBA), NEC-TBA and TPE-TBA, were synthesized and used as a fluorescence biosensor for monitoring ClO- with aggregation-induced emission (AIE) effect. we identified that TPE-TBA, with formed nanoparticles in the mean grain size at 76 nm (5 μM), was a superior probe to target ClO- over other analytes with fluorescence "turn off" strategy. Subsequently, to explore the bioimaging application, TPE-TBA was able to sense exogenous ClO- in living HeLa cells through fluorescence imaging. In zebrafish model, TPE-TBA effectively captured exogenous ClO- in the entire organization of zebrafish. Overall, these AIE-based probes merit further development as organism targeting ClO- sensors.
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Affiliation(s)
- Hong Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China; Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, China
| | - Xiaojun He
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yuzhong Yu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yuna Qian
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
| | - Jianliang Shen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China.
| | - Shanchao Zhao
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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7
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Serpeloni JM, Specian AFL, Ribeiro DL, Benício LM, Nunes HL, Franchi LP, Rocha CQ, Vilegas W, Varanda EA, Cólus IMS. Fridericia platyphylla (Cham.) L.G. Lohmann root extract exerts cytotoxic and antiproliferative effects on gastric tumor cells and downregulates BCL-XL, BIRC5, and MET genes. Hum Exp Toxicol 2019; 39:338-354. [DOI: 10.1177/0960327119888261] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Fridericia platyphylla (Cham.) L.G. Lohmann (FP) has cytotoxic, anti-inflammatory, and analgesic properties. We aimed to characterize the cytotoxic and antiproliferative effects of FP extract on normal (GAS) and tumor-derived (ACP02 and HepG2) cell lines. The effective concentrations (EC50s) by tetrazolium bromide assay (MTT) were 56.16, 43.68, and 42.57 µg mL−1 and 69.38, 41.73, and 52.39 µg mL−1 by neutral red assay for GAS, ACP02, and HepG2 cells, respectively. The extract decreased nuclear division indices, which was not reflected in cell proliferation curves. Flow cytometric analyses showed that even 30 µg mL−1 extract (shown to be noncytotoxic by MTT assay) increased the sub-G1 population, indicating cell death due to apoptosis and necrosis. A cytokinesis-block micronucleus cytome assay showed that 30 µg mL−1 of the extract increased the frequency of nuclear buds in tumor cells. Real-time quantitative polymerase chain reaction showed CCND1 upregulation in doxorubicin-treated GAS cells and BCL-XL, BIRC5, and MET downregulation in 5 or 30 µg mL−1 in FP extract-treated ACP02 cells. In conclusion, FP extract modulated apoptosis- and cell cycle-related genes and presented selective cytotoxicity toward tumor cells that deserves further investigation by testing other cell types. Our results demonstrated that even medicinal plants exert adverse effects depending on the extract concentrations used and tissues investigated.
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Affiliation(s)
- JM Serpeloni
- Laboratory of Mutagenesis, Department of Biological Sciences, Faculty of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
- Laboratory of Mutagenesis and Oncogenetics, Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - AFL Specian
- Laboratory of Mutagenesis and Oncogenetics, Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - DL Ribeiro
- Laboratory of Mutagenesis and Oncogenetics, Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - LM Benício
- Laboratory of Mutagenesis and Oncogenetics, Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - HL Nunes
- Laboratory of Mutagenesis and Oncogenetics, Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, Brazil
| | - LP Franchi
- Laboratory of Cytogenetics and Mutagenesis, Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto (FFCLRP), Ribeirão Preto, Brazil
| | - CQ Rocha
- Laboratory of Advanced Studies in Phytomedicines, Department of Chemistry, Federal University of Maranhão (UFMA), São Luís, Brazil
| | - W Vilegas
- Campus Litoral Paulista, São Paulo State University (UNESP), São Vicente, Brazil
| | - EA Varanda
- Laboratory of Mutagenesis, Department of Biological Sciences, Faculty of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - IMS Cólus
- Laboratory of Mutagenesis, Department of Biological Sciences, Faculty of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
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8
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Latsis GK, Banti CN, Kourkoumelis N, Papatriantafyllopoulou C, Panagiotou N, Tasiopoulos A, Douvalis A, Kalampounias AG, Bakas T, Hadjikakou SK. Poly Organotin Acetates against DNA with Possible Implementation on Human Breast Cancer. Int J Mol Sci 2018; 19:ijms19072055. [PMID: 30011935 PMCID: PMC6073380 DOI: 10.3390/ijms19072055] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 07/06/2018] [Accepted: 07/12/2018] [Indexed: 11/16/2022] Open
Abstract
Two known tin-based polymers of formula {[R3Sn(CH3COO)]n} where R = n-Bu– (1) and R = Ph– (2),were evaluated for their in vitro biological properties. The compounds were characterized via their physical properties and FT-IR, 119Sn Mössbauer, and 1H NMR spectroscopic data. The molecular structures were confirmed by single-crystal X-Ray diffraction crystallography. The geometry around the tin(IV) ion is trigonal bi-pyramidal. Variations in O–Sn–O···Sn′ torsion angles lead to zig-zag and helical supramolecular assemblies for 1 and 2, respectively. The in vitro cell viability against human breast adenocarcinoma cancer cell lines: MCF-7 positive to estrogens receptors (ERs) and MDA-MB-231 negative to ERs upon their incubation with 1 and 2 was investigated. Their toxicity has been studied against normal human fetal lung fibroblast cells (MRC-5). Compounds 1 and 2 exhibit 134 and 223-fold respectively stronger antiproliferative activity against MDA-MB-231 than cisplatin. The type of the cell death caused by 1 or 2 was also determined using flow cytometry assay. The binding affinity of 1 and 2 towards the CT-DNA was suspected from the differentiation of the viscosity which occurred in the solution containing increasing amounts of 1 and 2. Changes in fluorescent emission light of Ethidium bromide (EB) in the presence of DNA confirmed the intercalation mode of interactions into DNA of both complexes 1 and 2 which have been ascertained from viscosity measurements. The corresponding apparent binding constants (Kapp) of 1 and 2 towards CT-DNA calculated through fluorescence spectra are 4.9 × 104 (1) and 7.3 × 104 (2) M−1 respectively. Finally, the type of DNA binding interactions with 1 and 2 was confirmed by docking studies.
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Affiliation(s)
- George K Latsis
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - Christina N Banti
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - Nikolaos Kourkoumelis
- Medical Physics Laboratory, Medical School, University of Ioannina, 45110 Ioannina, Greece.
| | | | - Nikos Panagiotou
- Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus.
| | | | - Alexios Douvalis
- Mössbauer Spectroscopy and Physics of Material Laboratory, Department of Physics, University of Ioannina, 45110 Ioannina, Greece.
| | - Angelos G Kalampounias
- Physical Chemistry Laboratory, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - Thomas Bakas
- Mössbauer Spectroscopy and Physics of Material Laboratory, Department of Physics, University of Ioannina, 45110 Ioannina, Greece.
| | - Sotiris K Hadjikakou
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
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9
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Janikowska G, Pyka-Pająk A, Janikowski T, Adamska J, Mazurek U, Jędrusik P. Potential Mechanism of Action of Cyclosporin A in Human Dermal Fibroblasts-Transcriptomic Analysis of CYPs. Molecules 2018; 23:molecules23071642. [PMID: 29976866 PMCID: PMC6100361 DOI: 10.3390/molecules23071642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/27/2018] [Accepted: 07/02/2018] [Indexed: 11/16/2022] Open
Abstract
Effect of cyclosporin A (CsA) in a therapeutic concentration, on the expression of cytochrome P450 genes (CYPs), was investigated in normal human dermal fibroblast cells. The expression of 57 genes, encoding cytochrome P450 isoforms, was estimated using the microarray method. Amongst 396 normalized fluorescence signals related to cytochrome P450 activity, only 91 were strictly connected to CYPs and were analyzed using two methods: a self-organizing feature map of artificial neural networks and typical statistical analysis with significance level at p ≤ 0.05. Comparing the samples from fibroblasts cultured with CsA and those cultured without, up-regulated changes of CYP19A1, 1B1, 7A1, 7F1, 17A1 and down-regulated 2D6 gene expression were observed. The mRNAs with increased changes were in the same neuron of the self-organizing feature map. All distinguished CYPs encode monooxygenases, which plays an important role in steroids biosynthesis and metabolism. Based on the obtained results, we can conclude that CsA in therapeutic concentration changes the expression profile of CYPs in human dermal fibroblasts, especially affecting genes linked to steroids synthesis and/or metabolism. It shows the potential mechanism of action of CsA in human dermal fibroblast cells.
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Affiliation(s)
- Grażyna Janikowska
- Department of Analytical Chemistry, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - Alina Pyka-Pająk
- Department of Analytical Chemistry, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - Tomasz Janikowski
- Department of Molecular Biology, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland.
| | - Jolanta Adamska
- Department of Molecular Biology, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland.
| | - Urszula Mazurek
- Department of Molecular Biology, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland.
| | - Przemysław Jędrusik
- Department of Molecular Biology, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland.
- Department of Biomedical Computer Systems, University of Silesia, Będzińska 39, 41-205 Sosnowiec, Poland.
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10
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Corredor Z, Rodríguez-Ribera L, Coll E, Silva I, Díaz JM, Ballarín J, Marcos R, Pastor S. DNA damage in kidney transplant patients. Role of organ origin. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2017; 58:712-718. [PMID: 28833525 DOI: 10.1002/em.22117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
Chronic kidney disease (CKD) patients are characterized by elevated levels of genomic damage. This damage increases when kidney function decreases being maximum in hemodialysis patients. As kidney transplantation improves renal function, and it is related with better survival, the aim of our study was to evaluate potential changes in DNA damage levels after kidney transplantation, and comparing living donor recipients with cadaveric donor recipients. The alkaline comet assay was used to determine DNA breaks and oxidative damaged DNA; and the micronucleus assay was used to determine chromosomal breakage and/or aneuploidy. Fifty CKD patients were followed up after 6 and 12 months of their kidney transplantation. All patients increased their genomic damage levels after 6 and 12 months of renal transplantation, compared with those observed before transplantation, despite of the improvement of their metabolic functions. Donor advanced age correlated positively with higher DNA damage. Genomic damage was lower in living donor transplants with respect to cadaveric donor transplants. Our conclusion is that DNA damage increased in kidney transplantation patients, whereas their renal function improved. Higher levels of DNA damage were found in cadaveric donor transplants when compared to living donor transplants. Environ. Mol. Mutagen. 58:712-718, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Zuray Corredor
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193, Spain
| | - Lara Rodríguez-Ribera
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193, Spain
| | | | | | | | | | - Ricard Marcos
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193, Spain
- CIBER Epidemiología y Salud Pública, ISCIII, Madrid, Spain
| | - Susana Pastor
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193, Spain
- CIBER Epidemiología y Salud Pública, ISCIII, Madrid, Spain
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11
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Shah AJ, Prasanth Kumar S, Rao MV, Pandya HA. Ameliorative effects of curcumin towards cyclosporine-induced genotoxic potential: an in vitro and in silico study. Drug Chem Toxicol 2017; 41:259-269. [DOI: 10.1080/01480545.2017.1380660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ankita J. Shah
- Department of Zoology, Human Genetics and Biomedical Technology, Ahmedabad, India
| | - Sivakumar Prasanth Kumar
- Department of Bioinformatics, Applied Botany Centre, University School of Sciences, Gujarat University, Ahmedabad, India
| | - Mandava V. Rao
- Department of Zoology, Human Genetics and Biomedical Technology, Ahmedabad, India
| | - Himanshu A. Pandya
- Department of Bioinformatics, Applied Botany Centre, University School of Sciences, Gujarat University, Ahmedabad, India
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12
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Villani S, Adami R, Reverchon E, Ferretti AM, Ponti A, Lepretti M, Caputo I, Izzo L. pH-sensitive polymersomes: controlling swelling via copolymer structure and chemical composition. J Drug Target 2017; 25:899-909. [PMID: 28812391 DOI: 10.1080/1061186x.2017.1363216] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
pH-sensitive vesicles used as drug delivery systems (DDSs) are generally composed of protonable copolymers. The disaggregation of these nanoparticles (NPs) during drug release implies the dispersion of positively charged cytotoxic polyelectrolytes in the human body. To alleviate such issue, we synthesised A(BC)n amphiphilic block copolymers with linear (n = 1) and branched (n = 2) architectures to obtain pH-sensitive vesicles capable of releasing drugs in acidic conditions via controlled swelling instead of disaggregation. We obtained this feature by fine-tuning the relative amount of pH-sensitive and hydrophobic monomers. We studied pH-driven swelling by measuring NPs size in neutral and acidic conditions, the latter typical of tumours or inflamed tissues (pH∼6) and lysosomes (pH∼4.5). Dynamic light scattering (DLS) and zeta potential data provided useful indications about the influence of architecture and chemical composition on NPs swelling, stability and polycation release. Results demonstrated that vesicles made of linear copolymers with ∼22-28% in mol of protonable monomers in the 'BC' block swelled more than other species following a pH change from pH 7.4 to pH 4.5. We finally evaluated the cytotoxicity of vesicles composed of linear species, and paclitaxel (PTX) release from the latter in both cancer and normal cells.
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Affiliation(s)
- Simone Villani
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
| | - Renata Adami
- b Dipartimento di Ingegneria Industriale , Università degli Studi di Salerno , Fisciano , Italy
| | - Ernesto Reverchon
- b Dipartimento di Ingegneria Industriale , Università degli Studi di Salerno , Fisciano , Italy
| | - Anna Maria Ferretti
- c Istituto di Scienze e Tecnologie Molecolari , Consiglio Nazionale delle Ricerche , Milano , Italy
| | - Alessandro Ponti
- c Istituto di Scienze e Tecnologie Molecolari , Consiglio Nazionale delle Ricerche , Milano , Italy
| | - Marilena Lepretti
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
| | - Ivana Caputo
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
| | - Lorella Izzo
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
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13
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Verdino A, Vigliotta G, Giordano D, Caputo I, Soriente A, De Rosa M, Marabotti A. Synthesis and biological evaluation of the progenitor of a new class of cephalosporin analogues, with a particular focus on structure-based computational analysis. PLoS One 2017; 12:e0181563. [PMID: 28749999 PMCID: PMC5531512 DOI: 10.1371/journal.pone.0181563] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 07/03/2017] [Indexed: 02/04/2023] Open
Abstract
We present the synthesis and biological evaluation of the prototype of a new class of cephalosporins, containing an additional isolated beta lactam ring with two phenyl substituents. This new compound is effective against Gram positive microorganisms, with a potency similar to that of ceftriaxone, a cephalosporin widely used in clinics and taken as a reference, and with no cytotoxicity against two different human cell lines, even at a concentration much higher than the minimal inhibitory concentration tested. Additionally, a deep computational analysis has been conducted with the aim of understanding the contribution of its moieties to the binding energy towards several penicillin-binding proteins from both Gram positive and Gram negative bacteria. All these results will help us developing derivatives of this compound with improved chemical and biological properties, such as a broader spectrum of action and/or an increased affinity towards their molecular targets.
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Affiliation(s)
- Anna Verdino
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
| | - Giovanni Vigliotta
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
| | - Deborah Giordano
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
| | - Ivana Caputo
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
| | - Annunziata Soriente
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
| | - Margherita De Rosa
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
- * E-mail: (MDR); (AM)
| | - Anna Marabotti
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Fisciano (SA), Italy
- * E-mail: (MDR); (AM)
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14
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Bhagat J. Combinations of genotoxic tests for the evaluation of group 1 IARC carcinogens. J Appl Toxicol 2017; 38:81-99. [PMID: 28695982 DOI: 10.1002/jat.3496] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 01/10/2023]
Abstract
Many of the known human carcinogens are potent genotoxins that are efficiently detected as carcinogens in human populations but certain types of compounds such as immunosuppressants, sex hormones, etc. act via non-genotoxic mechanism. The absence of genotoxicity and the diversity of modes of action of non-genotoxic carcinogens make predicting their carcinogenic potential extremely challenging. There is evidence that combinations of different short-term tests provide a better and efficient prediction of human genotoxic and non-genotoxic carcinogens. The purpose of this study is to summarize the in vivo and in vitro comet assay (CMT) results of group 1 carcinogens selected from the International Agency for Research on Cancer and to discuss the utility of the comet assay along with other genotoxic assays such as Ames, in vivo micronucleus (MN), and in vivo chromosomal aberration (CA) test. Of the 62 agents for which valid genotoxic data were available, 38 of 61 (62.3%) were Ames test positive, 42 of 60 (70%) were in vivo MN test positive and 36 of 45 (80%) were positive for the in vivo CA test. Higher sensitivity was seen in in vivo CMT (90%) and in vitro CMT (86.9%) assay. Combination of two tests has greater sensitivity than individual tests: in vivo MN + in vivo CA (88.6%); in vivo MN + in vivo CMT (92.5%); and in vivo MN + in vitro CMT (95.6%). Combinations of in vivo or in vitro CMT with other tests provided better sensitivity. In vivo CMT in combination with in vivo CA provided the highest sensitivity (96.7%).
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Affiliation(s)
- Jacky Bhagat
- Department of Zoology, Goa University, Taleigao Plateau, Goa 403206, India
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15
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Dridi I, Grissa I, Ezzi L, Chakroun S, Ben-Cherif W, Haouas Z, Aouam K, Ben-Attia M, Reinberg A, Boughattas NA. Circadian variation of cytotoxicity and genotoxicity induced by an immunosuppressive agent "Mycophenolate Mofetil" in rats. Chronobiol Int 2016; 33:1208-1221. [PMID: 27484793 DOI: 10.1080/07420528.2016.1211139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Immunosuppressive drugs such as Mycophenolate Mofetil (MMF) are used to suppress the immune system activity in transplant patients and reduce the risk of organ rejection. The present study investigates whether the potential cytotoxicity and genotoxicity varied according to MMF dosing-time in Wistar Rat. A potentially toxic MMF dose (300 mg/kg) was acutely administered by the i.p. route in rats at four different circadian stages (1, 7, 13 and 19 hours after light onset, HALO). Rats were sacrificed 3 days following injection, blood and bone marrow were removed for determination of cytotoxicity and genotoxicity analysis. The genotoxic effect of this pro-drug was investigated using the comet assay and the micronucleus test. Hematological changes were also evaluated according to circadian dosing time. MMF treatment induced a significant decrease at 7 HALO in red blood cells, in the hemoglobin rate and in white blood cells. These parameters followed a circadian rhythm in controls or in treated rats with an acrophase located at the end of the light-rest phase. A significant, thrombocytopenia was observed according to MMF circadian dosing time. Furthermore, abnormally shaped red cells, sometimes containing micronuclei, poikilocytotic in red cells and hypersegmented neutrophil nuclei were observed with MMF treatment. The micronucleus test revealed damage to chromosomes in rat bone marrow; the comet assay showed significant DNA damage. This damage varied according to circadian MMF dosing time. The injection of MMF in the middle of the dark-activity phase produced a very mild hematological toxicity and low genotoxicity. Conversely, it induced maximum hematological toxicity and genotoxicity when the administration occurred in the middle of the light-rest phase, which is physiologically analogous to the end of the activity of the diurnal phase in human patients.
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Affiliation(s)
- Ichrak Dridi
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Intissar Grissa
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Lobna Ezzi
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Sana Chakroun
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Wafa Ben-Cherif
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Zohra Haouas
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Karim Aouam
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Mossadok Ben-Attia
- c Laboratory of Biomonitoring of the Environment, Faculty of Science of Bizerte , Carthage University , Tunis , Tunisia
| | - Alain Reinberg
- d Unit of Chronobiology , Foundation A. de Rothschild , Paris Cedex , France
| | - Naceur A Boughattas
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
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16
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Lizotti Cilião H, Batista de Oliveira Camargo-Godoy R, Mazzaron Barcelos GR, Zanuto A, Daher Alvares Delfino V, de Syllos Cólus IM. Long-term genotoxic effects of immunosuppressive drugs on lymphocytes of kidney transplant recipients. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2016; 806:47-52. [PMID: 27476335 DOI: 10.1016/j.mrgentox.2016.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/15/2016] [Accepted: 07/01/2016] [Indexed: 12/11/2022]
Abstract
Immunosuppressive therapy can prevent rejection after organ transplantation. However, increased cancer risk is a serious complication among patients undergoing such therapy. We have evaluated whether prolonged use of immunosuppressive drugs is genotoxic. DNA instability was assessed, using the comet and micronucleus assays, in blood lymphocytes of 76 kidney transplant patients. DNA damage detected by the comet assay increased with time after transplantation. The estimated glomerular filtration rate of the patients did not influence the incidence of DNA damage. No association between micronucleated mononucleated cells and time elapsed after transplantation was observed. Our results suggest that prolonged use of immunosuppressive drugs in kidney transplant patients can induce genetic instability.
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Affiliation(s)
- Heloísa Lizotti Cilião
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil.
| | | | - Gustavo Rafael Mazzaron Barcelos
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Amanda Zanuto
- Center of Health Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | | | - Ilce Mara de Syllos Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
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17
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Specian AFL, Serpeloni JM, Tuttis K, Ribeiro DL, Cilião HL, Varanda EA, Sannomiya M, Martinez-Lopez W, Vilegas W, Cólus IMS. LDH, proliferation curves and cell cycle analysis are the most suitable assays to identify and characterize new phytotherapeutic compounds. Cytotechnology 2016; 68:2729-2744. [PMID: 27344148 DOI: 10.1007/s10616-016-9998-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 06/14/2016] [Indexed: 12/12/2022] Open
Abstract
Brazilian flora biodiversity has been widely investigated to identify effective and safe phytotherapeutic compounds. Among the investigated plant species, the Byrsonima genus exhibits promising biological activities. This study aimed at evaluating the cytotoxicity of B. correifolia, B. verbascifolia, B. fagifolia and B. intermedia extracts using different assays in two cell lines (primary gastric and HepG2 cells). The different extract concentrations effects on cell viability were assayed using the MTT, aquabluer, neutral red and LDH assays. Non-cytotoxic concentrations were selected to generate cell proliferation curves and to assess cell cycle kinetics by flow cytometry. Byrsonima extracts differentially affected cell viability depending on the metabolic cellular state and the biological parameter evaluated. B. fagifolia and B. intermedia extracts exhibited lower cytotoxic effects than B. correifolia and B. verbascifolia in all assays. The results obtained with LDH and flow cytometry assays were more reliable, suggesting that they can be useful in the screening for herbal medicine and to further characterize these extracts as phytotherapeutic compounds.
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Affiliation(s)
- Ana Flávia L Specian
- Department of General Biology, State University of Londrina, PR 445 Km 380, s/n - Campus Universitário, Londrina, PR, CEP 86057-970, Brazil.
| | - Juliana M Serpeloni
- Department of General Biology, State University of Londrina, PR 445 Km 380, s/n - Campus Universitário, Londrina, PR, CEP 86057-970, Brazil.,Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University "Júlio de Mesquita Filho", Araraquara, SP, Brazil
| | - Katiuska Tuttis
- Department of General Biology, State University of Londrina, PR 445 Km 380, s/n - Campus Universitário, Londrina, PR, CEP 86057-970, Brazil
| | - Diego L Ribeiro
- Department of General Biology, State University of Londrina, PR 445 Km 380, s/n - Campus Universitário, Londrina, PR, CEP 86057-970, Brazil
| | - Heloísa L Cilião
- Department of General Biology, State University of Londrina, PR 445 Km 380, s/n - Campus Universitário, Londrina, PR, CEP 86057-970, Brazil
| | - Eliana A Varanda
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University "Júlio de Mesquita Filho", Araraquara, SP, Brazil
| | - Miriam Sannomiya
- School of Arts, Science and Humanities, São Paulo University, São Paulo, SP, Brazil
| | | | - Wagner Vilegas
- Institute of Biosciences, UNESP- Paulista State University, Coastal Campus of São Vicente, São Vicente, SP, Brazil
| | - Ilce M S Cólus
- Department of General Biology, State University of Londrina, PR 445 Km 380, s/n - Campus Universitário, Londrina, PR, CEP 86057-970, Brazil
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18
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Serpeloni JM, Specian AFL, Ribeiro DL, Tuttis K, Vilegas W, Martínez-López W, Dokkedal AL, Saldanha LL, Cólus IMDS, Varanda EA. Antimutagenicity and induction of antioxidant defense by flavonoid rich extract of Myrcia bella Cambess. in normal and tumor gastric cells. JOURNAL OF ETHNOPHARMACOLOGY 2015; 176:345-355. [PMID: 26549270 DOI: 10.1016/j.jep.2015.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 10/14/2015] [Accepted: 11/01/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Brazilian "Cerrado" is an important source of natural products, such as Myrcia bella Cambess (MB, also known as "mercurinho"). MB leaves are popularly used for the treatment of diabetes and gastrointestinal disorders; however, only its hypoglycemic activity has been experimentally described. AIM OF THE STUDY Because MB is used to treat gastrointestinal disorders, the present study characterized biological activities of hydroalcoholic MB extract in human normal and tumor gastric cells. MATERIALS AND METHODS Cytotoxic, antiproliferative, genotoxic and protective effects were evaluated, as well as the effects of the MB extract on gene expression. RESULTS The MB extract induced cytotoxicity in tumor cells at lower concentrations compared with normal cells as assessed by the MTT assay. Moreover, the MB extract induced necrosis based on acridine orange/ethidium bromide staining. An antiproliferative effect was evidenced through an arrest in the G2/M phase detected by flow cytometry and a decrease in the nuclear division index using the cytokinesis-block micronucleus cytome assay. Cells treated with MB extract combined with doxorubicin (DXR) showed increased NUBDs, which may be related to the gene amplification of CCND1. Antimutagenic effects were also observed and may be associated with the antioxidant activities detected using the CM-H2DCFDA probe. CONCLUSIONS Our findings showed the following: (a) high concentrations of MB induced cytotoxicity and cell death by necrosis; (b) its antiproliferative effect was associated with G2/M arrest; and (c) its antioxidant activity could be responsible for the observed antimutagenic effects and for protective effects against gastrointestinal disorders previously described to MB. Although these effects are not specific to normal or tumor cells, they provide a panel of biological activities for further exploration.
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Affiliation(s)
- Juliana Mara Serpeloni
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14801-902, Brazil.
| | - Ana Flávia Leal Specian
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina 86057-970, Brazil
| | - Diego Luis Ribeiro
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina 86057-970, Brazil
| | - Katiuska Tuttis
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina 86057-970, Brazil
| | - Wagner Vilegas
- Experimental Campus of São Vicente, São Paulo State University (UNESP), São Vicente 11350-000, Brazil
| | | | - Anne Lígia Dokkedal
- Department of Biological Sciences, Faculty of Sciences, São Paulo State University (UNESP), Bauru 17033-360, Brazil
| | - Luiz Leonardo Saldanha
- Department of Biological Sciences, Faculty of Sciences, São Paulo State University (UNESP), Bauru 17033-360, Brazil; Department of Botany, Institute of Bioscience, São Paulo State University (UNESP), Botucatu 18618-970, Brazil
| | - Ilce Mara de Syllos Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina 86057-970, Brazil
| | - Eliana Aparecida Varanda
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14801-902, Brazil
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