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Qayyum S, Jabeen A, Aslam Z, Kanwal T, Shah MR, Faizi S. Synthesis and Characterization of Novel Lecithin Derived Nano-Formulation of Octyl and Dodecyl Gallate for Targeting B Cell Associated Non-Hodgkin’s Lymphoma. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02302-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Kim J, Ju J, Kim SD, Shin M. Plant-inspired Pluronic-gallol micelles with low critical micelle concentration, high colloidal stability, and protein affinity. Biomater Sci 2022; 10:3739-3746. [PMID: 35708628 DOI: 10.1039/d2bm00630h] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymeric micelles are the most common carriers used for hydrophobic drug delivery. However, they are vulnerable to physiological barriers, such as temperature changes and enzymatic degradation, and can be easily disassembled upon dilution below the critical micelle concentration (CMC) by body fluids after an intravenous injection. Here, we report that Pluronic® micelles with octyl gallate, which is a surfactant containing gallol moieties widely found in antioxidative plant polyphenols, have a low CMC, which improves their colloidal stability without the need for covalent crosslinking. Furthermore, the incorporated gallol moieties provide enzymatic degradation resistance to the micelles owing to their protein affinity, maintaining the hydrophobic cavity of unmodified Pluronic®. Thus, plant-inspired polymeric micelles with low CMC and bioavailability are promising multifunctional vehicles for drug delivery.
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Affiliation(s)
- Jungwoo Kim
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
| | - Jaewon Ju
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
| | - Sung Dong Kim
- Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Mikyung Shin
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea. .,Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.,Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
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3
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Haute GV, Luft C, Pedrazza L, Donadio MVF, de Oliveira JR. Octyl gallate decrease lymphocyte activation and regulates neutrophil extracellular traps release. Mol Biol Rep 2021; 49:1593-1599. [PMID: 34783987 DOI: 10.1007/s11033-021-06937-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 11/05/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Inflammation is a complex mechanism with an objective to destroy and eliminate the invading microorganisms. During acute inflammation, the neutrophils are the major cells involved in this process and, although they defend the organism, must die to not generate damage. The two major mechanisms that drive neutrophils to death are: apoptosis and a novel mechanism recently discovered denominated NETosis. This process is a "suicidal mechanism", in which the cells release "neutrophil extracellular traps" (NETs) during the inflammatory response. Octyl gallate (OG) is one of the gallic acid derivates, with several protective effects, such as antioxidant and anti-inflammatory in cancer models. Thus, this study aimed to investigate the action of OG on the proliferation of lymphocytes, neutrophils activation, and its effectiveness in an experimental sepsis model. METHODS Lymphocytes and neutrophils were obtained from healthy donors. Cell viability, apoptosis, NETs release and antioxidant capacity of OG were observed. In addition, survival was evaluated in an experimental model of sepsis in C57BL/6 mice. RESULTS Our study demonstrated, for the first time, that the OG can act as an inhibitor of reactive oxygen species (ROS) release, NETs formation in primary human neutrophils and, modulates the lipopolysaccharide (LPS) effect in neutrophil apoptosis. The OG also inhibited peripheral blood mononuclear cells (PBMCs) proliferation in vitro. Despite the positive results, we did not observe an increase in the survival of septic animals. CONCLUSIONS The pharmacological potential of OG, modulating activation of neutrophils and lymphocytes, suggests the use as an adjuvant therapeutic strategy in inflammatory diseases.
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Affiliation(s)
- Gabriela Viegas Haute
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Departamento de Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12, bloco C, sala 221, Porto Alegre, CEP 90619-900, Brazil
| | - Carolina Luft
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Departamento de Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12, bloco C, sala 221, Porto Alegre, CEP 90619-900, Brazil
- Laboratório de Respirologia Pediátrica, Instituto de Pesquisas Biomédicas (IPB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Leonardo Pedrazza
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Departamento de Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12, bloco C, sala 221, Porto Alegre, CEP 90619-900, Brazil.
| | - Márcio Vinícius Fagundes Donadio
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Departamento de Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12, bloco C, sala 221, Porto Alegre, CEP 90619-900, Brazil
- Laboratório de Respirologia Pediátrica, Instituto de Pesquisas Biomédicas (IPB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Departamento de Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga 6681, prédio 12, bloco C, sala 221, Porto Alegre, CEP 90619-900, Brazil.
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4
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Wang W, Xiong P, Zhang H, Zhu Q, Liao C, Jiang G. Analysis, occurrence, toxicity and environmental health risks of synthetic phenolic antioxidants: A review. ENVIRONMENTAL RESEARCH 2021; 201:111531. [PMID: 34146526 DOI: 10.1016/j.envres.2021.111531] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 06/12/2023]
Abstract
The continuous improvement of living standards is related to higher requirements for the freshness and taste of food. For example, synthetic phenolic antioxidants (SPAs) are added to fats and fried foods as food additives to minimize the oxidative rancidity of oils and fats. Hence, the global use of SPAs is increasing year by year. Dibutyl hydroxytoluene is one of the widely used SPAs, often in combination with butyl hydroxyanisole or gallate SPAs. The extensive use of these compounds makes them and their transformation products to be widespread in various environmental matrices, including indoor dust, wastewater, river water, sewage sludge, and sediment, as well as human samples, such as nails and urine, at concentrations varying from nanogram per gram (ng/g) to microgram per gram (μg/g). Animal experiments have shown that high-dose SPA exposure is toxic, which may lead to DNA damage and mismatches and the development of cancerous tumors. Since the biosphere shares the same set of genetic codes, humans and animals have many identical or similar feedback mechanisms and information pathways. Therefore, the damage of SPAs to animals may also threaten human health. This review discusses the properties, occurrence, analysis, and environmental health risks of typical SPAs, including butyl hydroxyanisole, dibutyl hydroxytoluene, tert-butylhydroquinone, propyl gallate, octyl gallate, and lauryl gallate, used as food additives. In addition, AO2246, which is used in food packaging bags, is also considered. Future research directions on SPAs and their transformation products (TPs) are identified and discussed.
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Affiliation(s)
- Wanyi Wang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Ping Xiong
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - He Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qingqing Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunyang Liao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Guibin Jiang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
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5
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Gomes KC, Lima FWB, da Silva Aguiar HQ, de Araújo SS, de Cordova CAS, de Cordova FM. Thiamine deficiency and recovery: impact of recurrent episodes and beneficial effect of treatment with Trolox and dimethyl sulfoxide. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:2289-2307. [PMID: 34468817 DOI: 10.1007/s00210-021-02148-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/26/2021] [Indexed: 10/20/2022]
Abstract
At present, thiamine deficiency (TD) is managed with administration of high doses of thiamine. Even so, severe and permanent neurological disorders can occur in recurrent episodes of TD. In this study, we used a murine model to assess the efficacy of TD recovery treatments using thiamine with or without additional administration of the antioxidant Trolox or the anti-inflammatory dimethyl sulfoxide (DMSO) after a single or recurrent episode of TD. TD was induced for 9 days with deficient chow and pyrithiamine, and the recovery period was 7 days with standard amounts of chow and thiamine, Trolox, and/or DMSO. After these periods, we evaluated behavior, histopathology, and ERK1/2 modulation in the brain. Deficient animals showed reductions in locomotor activity, motor coordination, and spatial memory. Morphologically, after a single episode of TD and recovery, deficient mice showed neuronal vacuolization in the dorsal thalamus and, after two episodes, a reduction in neuronal cell number. These effects were attenuated or reversed by the recovery treatments, mainly in the treatments with thiamine associated with Trolox or DMSO. Deficient animals showed a strong increase in ERK1/2 phosphorylation in the thalamus, hippocampus, and cerebral cortex after one deficiency episode and recovery. Interestingly, after recurrent TD and recovery, ERK1/2 phosphorylation remained high only in the deficient mice treated with thiamine and/or Trolox or thiamine with DMSO. Our data suggest that a protocol for TD treatment with thiamine in conjunction with Trolox or DMSO enhances the recovery of animals and possibly minimizes the late neurological sequelae.
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Affiliation(s)
- Ketren Carvalho Gomes
- Programa de Pós-Graduação em Sanidade Animal e Saúde Pública nos Trópicos , Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | | | - Helen Quézia da Silva Aguiar
- Curso de Medicina Veterinária, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | - Suiane Silva de Araújo
- Curso de Medicina Veterinária, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | | | - Fabiano Mendes de Cordova
- Programa de Pós-Graduação em Sanidade Animal e Saúde Pública nos Trópicos , Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil.
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6
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Chemical Modification of Glycosaminoglycan Polysaccharides. Molecules 2021; 26:molecules26175211. [PMID: 34500644 PMCID: PMC8434129 DOI: 10.3390/molecules26175211] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 12/16/2022] Open
Abstract
The linear anionic class of polysaccharides, glycosaminoglycans (GAGs), are critical throughout the animal kingdom for developmental processes and the maintenance of healthy tissues. They are also of interest as a means of influencing biochemical processes. One member of the GAG family, heparin, is exploited globally as a major anticoagulant pharmaceutical and there is a growing interest in the potential of other GAGs for diverse applications ranging from skin care to the treatment of neurodegenerative conditions, and from the treatment and prevention of microbial infection to biotechnology. To realize the potential of GAGs, however, it is necessary to develop effective tools that are able to exploit the chemical manipulations to which GAGs are susceptible. Here, the current knowledge concerning the chemical modification of GAGs, one of the principal approaches for the study of the structure-function relationships in these molecules, is reviewed. Some additional methods that were applied successfully to the analysis and/or processing of other carbohydrates, but which could be suitable in GAG chemistry, are also discussed.
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7
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Alabi OA, Silva AH, Rode MP, Pizzol CD, de Campos AM, Filippin-Monteiro FB, Bakare AA, Creczynski-Pasa TB. In vitro cytotoxicity of co-exposure to superparamagnetic iron oxide and solid lipid nanoparticles. Toxicol Ind Health 2020; 37:77-89. [PMID: 33308053 DOI: 10.1177/0748233720977383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Increased production and use of different types of nanoparticles (NPs) in the last decades has led to increased environmental release of these NPs with potential detrimental effects on both the environment and public health. Information is scarce in the literature on the cytotoxic effect of co-exposure to many NPs as this concern is relatively recent. Thus, in this study, we hypothesized scenarios of cell's co-exposure to two kinds of NPs, solid lipid nanoparticles (SLNs) and superparamagnetic iron oxide nanoparticles (SPIONs), to assess the potential cytotoxicity of exposure to NPs combination. Cytotoxicity of SPIONs, SLNs, and their 1:1 mixture (MIX) in six tumor and six non-tumor cell lines was investigated. The mechanisms underlining the induced cytotoxicity were studied through cell cycle analysis, detection of reactive oxygen species (ROS), and alterations in mitochondrial membrane potential (ΔΨM). Double staining with acridine orange and ethidium bromide was also used to confirm cell morphology alterations. The results showed that SPIONs induced low cytotoxicity compared to SLNs. However, the mixture of SPIONs and SLNs showed synergistic, antagonistic, and additive effects based on distinct tests such as viability assay, ROS generation, ΔΨM, and DNA damage, depending on the cell line. Apoptosis triggered by ROS and disturbances in ΔΨM are the most probable related mechanisms of action. As was postulated, there is possible cytotoxic interaction between the two kinds of NPs.
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Affiliation(s)
- Okunola A Alabi
- Department of Biology, Federal University of Technology, Akure, Ondo State, Nigeria.,Department of Pharmaceutical Sciences, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Adny H Silva
- Department of Biochemistry, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Michele P Rode
- Department of Pharmaceutical Sciences, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Carine Dal Pizzol
- Department of Pharmaceutical Sciences, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Angela Machado de Campos
- Department of Pharmaceutical Sciences, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Fabíola B Filippin-Monteiro
- Department of Clinical Analysis, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Adekunle A Bakare
- Cell Biology and Genetics Unit, Department of Zoology, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Tânia B Creczynski-Pasa
- Department of Pharmaceutical Sciences, 28117Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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8
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Ghatreh Samani K, Farrokhi E, Tabatabaee A, Jalilian N, Jafari M. Synergistic Effects of Lauryl Gallate and Tamoxifen on Human Breast Cancer Cell. IRANIAN JOURNAL OF PUBLIC HEALTH 2020; 49:1324-1329. [PMID: 33083299 PMCID: PMC7548506 DOI: 10.18502/ijph.v49i7.3586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Background: Tamoxifen (TAM) is widely used for adjuvant therapy in breast cancer patients. Tamoxifen therapy may lead to serious side effects. Anti-apoptotic substances in combination with chemotherapy drugs can result in additive or synergistic effects. Lauryl gallate (LG), a Gallic acid derivative, has been proven to inhibit tumor growth, without affecting normal cells. This study aimed to investigate the synergistic effect of TAM and LG in breast cancer cell line (MCF-7). Methods: In this experimental study, performed in ShahreKord University of Medical Science, Iran in 2017, the MCF-7 cells were treated by final concentrations of 10 μM TAM alone, and in combination with 200 μM of LG. We also used EX-527, as SIRT-1 inhibitor to examine the role of SIRT1 in cell apoptosis. BCL-2 and SIRT1 gene expression were measured by real-time PCR method, and cell apoptosis was investigated by flow cytometry. Results: Tamoxifen alone and in combination with LG decreased BCL-2 expression 2.64±0.75 and 6.38±1.9 fold, respectively, after 48 h (P<0.05). SIRT1 expression was increased 1.67±0.22 and 2.47±0.34 - fold by TAM alone and in combination with LG, respectively (P<0.05). TAM alone and in combination with LG increased the percentage of apoptotic cells 15.79±2.81 and 60.67±6.23 percent, respectively after 48 h (P<0.001). Conclusion: The combination of LG and TAM is more effective for induction of apoptosis of breast cancer cells, compared to individual use of each. Thus, our data pave the way for new therapeutic options for suppressing breast cancer growth.
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Affiliation(s)
- Keihan Ghatreh Samani
- Clinical Biochemistry Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Effat Farrokhi
- Department of Molecular Medicine, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Aliye Tabatabaee
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Narges Jalilian
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mahbube Jafari
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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9
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Saibabu V, Fatima Z, Ahmad K, Khan LA, Hameed S. Octyl gallate triggers dysfunctional mitochondria leading to ROS driven membrane damage and metabolic inflexibility along with attenuated virulence in Candida albicans. Med Mycol 2020; 58:380-392. [PMID: 31135913 DOI: 10.1093/mmy/myz054] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/11/2019] [Accepted: 05/02/2019] [Indexed: 01/07/2023] Open
Abstract
Recently the high incidence of worldwide Candida infections has substantially increased. The growing problem about toxicity of antifungal drugs and multidrug resistance aggravates the need for the development of new effective strategies. Natural compounds in this context represent promising alternatives having potential to be exploited for improving human health. The present study was therefore designed to evaluate the antifungal effect of a naturally occurring phenolic, octyl gallate (OG), on Candida albicans and to investigate the underlying mechanisms involved. We demonstrated that OG at 25 μg/ml could effectively inhibit C. albicans. Mechanistic insights revealed that OG affects mitochondrial functioning as Candida cells exposed to OG did not grow on non-fermentable carbon sources. Dysfunctional mitochondria triggered generation of reactive oxygen species (ROS), which led to membrane damage mediated by lipid peroxidation. We explored that OG inhibited glucose-induced reduction in external pH and causes decrement in ergosterol levels by 45%. Furthermore, OG impedes the metabolic flexibility of C. albicans by inhibiting the glyoxylate enzyme isocitrate lyase, which was also confirmed by docking analysis. Additionally, OG affected virulence traits such as morphological transition and cell adherence. Furthermore, we depicted that OG not only prevented biofilm formation but eliminates the preformed biofilms. In vivo studies with Caenorhabditis elegans nematode model confirmed that OG could enhance the survival of C. elegans after infection with Candida. Toxicity assay using red blood cells showed only 27.5% haemolytic activity. Taken together, OG is a potent inhibitor of C. albicans that warrants further structural optimization and pharmacological investigations.
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Affiliation(s)
- Venkata Saibabu
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India.,Department of Biosciences, Jamia Millia Islamia, New Delhi-110025, India
| | - Zeeshan Fatima
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India
| | - Kamal Ahmad
- Center for Interdisciplinary Research, Jamia Millia Islamia, New Delhi-110025, India
| | - Luqman Ahmad Khan
- Department of Biosciences, Jamia Millia Islamia, New Delhi-110025, India
| | - Saif Hameed
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India
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10
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Carvalho Bertozo L, Fernandes AJFC, Yoguim MI, Bolean M, Ciancaglini P, Ximenes VF. Entropy‐driven binding of octyl gallate in albumin: Failure in the application of temperature effect to distinguish dynamic and static fluorescence quenching. J Mol Recognit 2020; 33:e2840. [DOI: 10.1002/jmr.2840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/25/2020] [Accepted: 02/10/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Luiza Carvalho Bertozo
- Department of Chemistry, Faculty of SciencesUNESP—São Paulo State University São Paulo Brazil
| | - Ana J. F. C. Fernandes
- Department of Chemistry, Faculty of SciencesUNESP—São Paulo State University São Paulo Brazil
| | - Maurício I. Yoguim
- Department of Chemistry, Faculty of SciencesUNESP—São Paulo State University São Paulo Brazil
| | - Maytê Bolean
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters at Ribeirão PretoUniversity of São Paulo Ribeirão Preto SP Brazil
| | - Pietro Ciancaglini
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters at Ribeirão PretoUniversity of São Paulo Ribeirão Preto SP Brazil
| | - Valdecir F. Ximenes
- Department of Chemistry, Faculty of SciencesUNESP—São Paulo State University São Paulo Brazil
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11
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Medeiros RDCN, Moraes JO, Rodrigues SDC, Pereira LM, Aguiar HQDS, de Cordova CAS, Yim Júnior A, de Cordova FM. Thiamine Deficiency Modulates p38 MAPK and Heme Oxygenase-1 in Mouse Brain: Association with Early Tissue and Behavioral Changes. Neurochem Res 2020; 45:940-955. [PMID: 31989470 DOI: 10.1007/s11064-020-02975-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/11/2020] [Accepted: 01/22/2020] [Indexed: 12/18/2022]
Abstract
Thiamine deficiency (TD) produces severe neurodegenerative lesions. Studies have suggested that primary neurodegenerative events are associated with both oxidative stress and inflammation. Very little is known about the downstream effects on intracellular signaling pathways involved in neuronal death. The primary aim of this work was to evaluate the modulation of p38MAPK and the expression of heme oxygenase 1 (HO-1) in the central nervous system (CNS). Behavioral, metabolic, and morphological parameters were assessed. Mice were separated into six groups: control (Cont), TD with pyrithiamine (Ptd), TD with pyrithiamine and Trolox (Ptd + Tr), TD with pyrithiamine and dimethyl sulfoxide (Ptd + Dmso), Trolox (Tr) and DMSO (Dmso) control groups and treated for 9 days. Control groups received standard feed (AIN-93M), while TD groups received thiamine deficient feed (AIN-93DT). All the groups were subjected to behavioral tests, and CNS samples were collected for cell viability, histopathology and western blot analyses. The Ptd group showed a reduction in weight gain and feed intake, as well as a reduction in locomotor, grooming, and motor coordination activities. Also, Ptd group showed a robust increase in p38MAPK phosphorylation and mild HO-1 expression in the cerebral cortex and thalamus. The Ptd group showed a decreased cell viability, hemorrhage, spongiosis, and astrocytic swelling in the thalamus. Groups treated with Trolox and DMSO displayed diminished p38MAPK phosphorylation in both the structures, as well as attenuated thalamic lesions and behavioral activities. These data suggest that p38MAPK and HO-1 are involved in the TD-induced neurodegeneration in vivo, possibly modulated by oxidative stress and neuroinflammation.
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Affiliation(s)
- Rita de Cássia Noronha Medeiros
- Programa de Pós-Graduação em Sanidade Animal e Saúde Pública nos Trópicos, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | - Juliana Oliveira Moraes
- Programa de Pós-Graduação em Sanidade Animal e Saúde Pública nos Trópicos, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | | | - Leidiano Martins Pereira
- Curso de Medicina Veterinária, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | - Helen Quézia da Silva Aguiar
- Curso de Medicina Veterinária, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | | | - Alberto Yim Júnior
- Curso de Medicina Veterinária, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil
| | - Fabiano Mendes de Cordova
- Programa de Pós-Graduação em Sanidade Animal e Saúde Pública nos Trópicos, Universidade Federal do Tocantins, BR-153, km 112, Araguaína, TO, 77804-970, Brazil.
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12
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Chua KV, Fan CS, Chen CC, Chen LL, Hsieh SC, Huang TS. Octyl Gallate Induces Pancreatic Ductal Adenocarcinoma Cell Apoptosis and Suppresses Endothelial-Mesenchymal Transition-Promoted M2-Macrophages, HSP90α Secretion, and Tumor Growth. Cells 2019; 9:E91. [PMID: 31905895 PMCID: PMC7016987 DOI: 10.3390/cells9010091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 01/05/2023] Open
Abstract
Octyl gallate (OG) is a common antioxidant and preservative safely used in food additive and cosmetics. In this study, OG exhibited an activity to induce apoptosis in pancreatic ductal adenocarcinoma (PDAC) cells. It induced BNIP3L level and facilitated physical associations of BNIP3L with Bcl-2 as well as Bcl-XL to set the mitochondrial Bax/Bak channels free for cytochrome c release. In addition, in vivo evaluation also showed that daily oral administration of OG was efficacious to prevent the tumor growth of PDAC cell grafts. Considering PDAC is a desmoplastic tumor consisting of many cancer-associated fibroblasts (CAFs), we further evaluated the efficacy of OG in a CAFs-involved PDAC mouse model. Endothelial-to-mesenchymal transition (EndoMT) is an important source of CAFs. The mix of EndoMT-derived CAFs with PDAC cell grafts significantly recruited myeloid-derived macrophages but prevented immune T cells. HSP90α secreted by EndoMT-derived CAFs further induced macrophage M2-polarization and more HSP90α secretion to expedite PDAC tumor growth. OG exhibited its potent efficacy against the tumor growth, M2-macrophages, and serum HSP90α level in the EndoMT-involved PDAC mouse model. CD91 and TLR4 are cell-surface receptors for extracellular HSP90α (eHSP90α). OG blocked eHSP90α-TLR4 ligation and, thus, prevented eHSP90α-induced M2-macrophages and more HSP90α secretion from macrophages and PDAC cells.
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Affiliation(s)
- Kee Voon Chua
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Chi-Shuan Fan
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Chia-Chi Chen
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Li-Li Chen
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Shu-Chen Hsieh
- Graduate Institute of Food Science and Technology, College of Bioresources and Agriculture, National Taiwan University, Taipei 106, Taiwan;
| | - Tze-Sing Huang
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Ph.D. Program in Tissue Engineering and Regenerative Medicine, Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
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Zeolite X from coal fly ash inhibits proliferation of human breast cancer cell lines (MCF-7) via induction of S phase arrest and apoptosis. Mol Biol Rep 2018; 45:2063-2074. [DOI: 10.1007/s11033-018-4363-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/05/2018] [Indexed: 12/31/2022]
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14
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Octyl gallate and gallic acid isolated from Terminalia bellarica regulates normal cell cycle in human breast cancer cell lines. Biomed Pharmacother 2018; 103:1577-1584. [DOI: 10.1016/j.biopha.2018.04.182] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 11/18/2022] Open
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15
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Octyl gallate reduces ATP levels and Ki67 expression leading HepG2 cells to cell cycle arrest and mitochondria-mediated apoptosis. Toxicol In Vitro 2017; 48:11-25. [PMID: 29288082 DOI: 10.1016/j.tiv.2017.12.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 12/09/2017] [Accepted: 12/22/2017] [Indexed: 12/17/2022]
Abstract
Octyl gallate (OG) is an antioxidant that has shown anti-tumor, anti-diabetic and anti-amyloidogenic activities. Mitochondria play an important role in hepatocellular carcinoma, mainly by maintaining accelerated cellular proliferation through the production of ATP. Thus, the mitochondria may be a target for antitumor therapies. Here, we investigated the effects of OG in the hepatocarcinoma cell line (HepG2) and the mechanisms involved. We report, for the first time, that treatment with OG for 24h inhibited HepG2 cell growth by decreasing mitochondrial activity and mass, which led to the reduction of ATP levels. This reduction in the energy supply triggered a decrease in Ki67 protein expression, leading cells to cycle arrest. In addition, treatment with two doses of OG for 48h induced loss of mitochondrial functionality, mitochondrial swelling and apoptosis. Finally, we report that HepG2 cells had no resistance to treatment after multiple doses. Collectively, our findings indicate that metabolic dysregulation and Ki67 protein reduction are key events in the initial anti-proliferative action of OG, whereas mitochondrial swelling and apoptosis induction are involved in the action mechanism of OG after prolonged exposure. This suggests that OG targets mitochondria, thus representing a candidate for further research on therapies for hepatocarcinoma.
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16
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Solid lipid nanoparticles improve octyl gallate antimetastatic activity and ameliorate its renal and hepatic toxic effects. Anticancer Drugs 2017; 28:977-988. [PMID: 28746057 DOI: 10.1097/cad.0000000000000539] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Metastasis is the main cause of cancer-related death and requires the development of effective treatments with reduced toxicity and effective anticancer activity. Gallic acid derivatives have shown significant biological properties including antitumoral activity as shown in a previous study with octyl gallate (G8) in vitro. Thus, the aim of this work was to evaluate the antimetastatic effect of free and solid lipid nanoparticle-loaded G8 in mice in a lung metastasis model. Animals inoculated with melanoma cells presented metastasis in lungs, which was significantly inhibited by treatment with G8 and solid lipid nanoparticle-loaded G8, named G8-NVM. However, G8-treated mice showed an increase in several toxicological parameters, which were almost completely circumvented by G8-NVM treatment. This study supports the need for pharmacological studies on new potential medicinal plants to treat cancer and can provide new perspectives on using nanotechnology to improve biological activities while decreasing the chemotherapy toxicological effects of anticancer drugs.
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de Sousa FS, Grecco SS, Girola N, Azevedo RA, Figueiredo CR, Lago JHG. Neolignans isolated from Nectandra leucantha induce apoptosis in melanoma cells by disturbance in mitochondrial integrity and redox homeostasis. PHYTOCHEMISTRY 2017; 140:108-117. [PMID: 28478313 DOI: 10.1016/j.phytochem.2017.04.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/27/2017] [Accepted: 04/29/2017] [Indexed: 06/07/2023]
Abstract
Six neolignans including three previously undescribed metabolites: 1-[(7R)-hydroxy-8-propenyl]-3-[3'-methoxy-1'-(8'-propenyl)-phenoxy]-4,5-dimethoxybenzene, 4-hydroxy-5-methoxy-3-[3'-methoxy-1'-(8'-propenyl)phenoxy]-1-(7-oxo-8-propenyl)benzene and 4,5-dimethoxy-3-[3'-methoxy-1'-(8'-propenyl)phenoxy]-1-(7-oxo-8-propenyl)benzene were isolated from twigs of Nectandra leucantha Nees & Mart (Lauraceae) using bioactivity-guided fractionation. Cytotoxic activity of isolated compounds was evaluated in vitro against cancer cell lines (SK BR-3, HCT, U87-MG, A2058, and B16F10), being dehydrodieugenol B and 4-hydroxy-5-methoxy-3-[3'-methoxy-1'-(8'-propenyl)phenoxy]-1-(7-oxo-8-propenyl)benzene the most active metabolites. These compounds displayed IC50 values of 78.8 ± 2.8 and 82.2 ± 3.5 μM, respectively, against murine melanoma. Different in vitro mechanism of induced cytotoxicity for this cell line is proposed for both compounds. Obtained results indicated a remarkable effect during the induction of morphological, biochemical and enzymatic features of apoptosis, such as disruption of mitochondrial membrane potential (ΔΨm), exposure of phosphatidylserine in the outer cell membrane, and genomic DNA condensation and fragmentation. Dehydrodieugenol B induced caspase-3 and PARP activation and 4-hydroxy-5-methoxy-3-[3'-methoxy-1'-(8'-propenyl)phenoxy]-1-(7-oxo-8-propenyl)benzene downregulated the levels of Bcl-2 protein. These effects were accompanied by increased levels of reactive oxygen species as a consequence of mitochondrial damage, followed by F-actin aggregation during the cell death process. Dehydrodieugenol B showed oxidative properties and both compounds, especially 4-hydroxy-5-methoxy-3-[3'-methoxy-1'-(8'-propenyl)phenoxy]-1-(7-oxo-8-propenyl)benzene, displayed potential to alkylate nucleophiles, suggesting an accessory mechanism of tumor-induced cytotoxicity by these metabolites.
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Affiliation(s)
- Fernanda S de Sousa
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, 09972-270, Brazil
| | - Simone S Grecco
- Center of Natural Sciences and Humanities, Federal University of ABC, Santo Andre, 09210-580, Brazil
| | - Natalia Girola
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, 04021-001, Brazil
| | - Ricardo A Azevedo
- Laboratory of Tumor Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, 05508-900, Brazil
| | - Carlos R Figueiredo
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, 04021-001, Brazil.
| | - João Henrique G Lago
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, 09972-270, Brazil; Center of Natural Sciences and Humanities, Federal University of ABC, Santo Andre, 09210-580, Brazil.
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Perazzoli MRA, Perondi CK, Baratto CM, Winter E, Creczynski-Pasa TB, Locatelli C. Gallic Acid and Dodecyl Gallate Prevents Carbon Tetrachloride-Induced Acute and Chronic Hepatotoxicity by Enhancing Hepatic Antioxidant Status and Increasing p53 Expression. Biol Pharm Bull 2017; 40:425-434. [PMID: 28381798 DOI: 10.1248/bpb.b16-00782] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Gallic acid (3,4,5-trihydroxybenzoic acid, GA), a natural phenolic acid has been reported as a strong antioxidant. Therefore the present study was designed to evaluate the effects of GA and dodecyl gallate (DGA) against acute and chronic carbon tetrachloride (CCl4)-induced hepatotoxicity. For acute model, rats were orally treated with GA and DGA for 7 d prior to CCl4 by intraperitoneally (i.p.) injection. For the chronic model, rats were orally treated with GA or DGA and CCl4 i.p. twice a week for four weeks. In both acute and chronic models, the CCl4-treated groups showed significantly increase in serum hepatic enzyme activities and histopathologic alterations, as well as a disruption in antioxidative status. In contrast, the treatment with GA and DGA restored serum hepatic enzymes activities, improved histopathologic alterations, increased glutathione (GSH) and decreased lipid peroxidation levels. The activities of liver antioxidant enzymes were increased by GA and DGA only in acute model. The expression of p53 gene increased about 3.5 times after GA and DGA treatments, which could result in cell death of damaged hepatocytes preventing of a lifelong liver failure. Thus, these results suggest that GA and DGA has the potential to prevent liver damages as the case of fibrosis condition.
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19
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Demiroglu-Zergeroglu A, Candemir G, Turhanlar E, Sagir F, Ayvali N. EGFR-dependent signalling reduced and p38 dependent apoptosis required by Gallic acid in Malignant Mesothelioma cells. Biomed Pharmacother 2016; 84:2000-2007. [PMID: 27847212 DOI: 10.1016/j.biopha.2016.11.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 12/25/2022] Open
Abstract
The unrestrained EGFR signalling contributes to malignant phenotype in a number of cancers including Malignant Mesotheliomas. Present study was designed to evaluate EGFR-dependent anti-proliferative and apoptotic effects of Gallic acid in transformed Mesothelial (MeT-5A) and Malignant Mesothelioma (SPC212) cells. Gallic acid reduced the viability of Malignant Mesothelioma cells in a concentration and time-dependent manner. However, viability of mesothelial cells reduced only at high concentration and longer time periods. Gallic acid restrained the activation of EGFR, ERK1/2 and AKT proteins and down regulated expression of Cyclin D and Bcl-2 genes, but upregulated the expression of p21 gene in EGF-induced SPC212 cells. GA-induced transitory G1 arrest and triggered mitochondrial and death receptor mediated apoptosis, which requires p38MAPK activation. The data provided here indicate that GA is able to inhibit EGFR dependent proliferation and survival signals and induces p38 pathway dependent apoptosis in Malignant Mesothelioma cells. On the basis of these experimental findings it is worthwhile to investigate further the biological activity of Gallic acid on other Mesothelioma cell lines harbouring aberrant EGFR signals.
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Affiliation(s)
| | - Gulsife Candemir
- Gebze Technical University, Department of Molecular Biology & Genetics, Gebze/Kocaeli, Turkey
| | - Ebru Turhanlar
- Gebze Technical University, Department of Molecular Biology & Genetics, Gebze/Kocaeli, Turkey
| | - Fatma Sagir
- Gebze Technical University, Department of Molecular Biology & Genetics, Gebze/Kocaeli, Turkey
| | - Nurettin Ayvali
- Gebze Technical University, Department of Molecular Biology & Genetics, Gebze/Kocaeli, Turkey
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20
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Czerniak K, Biedziak A, Krawczyk K, Pernak J. Synthesis and properties of gallate ionic liquids. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Wu CC, Cheng CH, Lee YH, Chang IL, Chen HY, Hsieh CP, Chueh PJ. Ursolic Acid Triggers Apoptosis in Human Osteosarcoma Cells via Caspase Activation and the ERK1/2 MAPK Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:4220-6. [PMID: 27171502 DOI: 10.1021/acs.jafc.6b00542] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ursolic acid (UA), a naturally occurring pentacyclic triterpene acid found in many medicinal herbs and edible plants, has been shown to trigger apoptosis in several lines of tumor cells in vitro. We found that treatment with UA suppressed the viability of human osteosarcoma MG-63 cells and induced cell cycle arrest at sub-G1 and G2/M phases. Furthermore, exposure to UA induced intracellular oxidative stress and collapse of mitochondrial membrane permeability, resulting in the subsequent activation of apoptotic caspases 8, 9, and 3 as well as PARP cleavage, and ultimately apoptosis in MG-63 cells. Moreover, protein analysis of mitogen-activated protein kinase (MAPK)-related protein expression showed an increase in activated ERK1/2, JNK, and p38 MAPK in UA-treated MG-63 cells. In addition, UA-induced apoptosis was significantly abolished in MG-63 cells that had been pretreated with inhibitors of caspase 3, 8, and 9 and ERK1/2. Furthermore, UA-treated MG-63 cells also exhibited an enhancement in Bax/Bcl-2 ratio, whereas anti-apoptotic XIAP and survivin were down-regulated. Taken together, we provide evidence demonstrating that UA mediates caspase-dependent and ERK1/2 MAPK-associated apoptosis in osteosarcoma MG-63 cells.
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Affiliation(s)
- Chia-Chieh Wu
- Orthopedics & Sports Medicine Laboratory, Changhua Christian Hospital , Changhua 50006, Taiwan
- Department of Orthopedic Surgery, Changhua Christian Hospital , Changhua 50006, Taiwan
- Institute of Biomedical Sciences, National Chung Hsing University , Taichung 40227, Taiwan
| | - Chun-Hsiang Cheng
- Orthopedics & Sports Medicine Laboratory, Changhua Christian Hospital , Changhua 50006, Taiwan
| | - Yi-Hui Lee
- Institute of Biomedical Sciences, National Chung Hsing University , Taichung 40227, Taiwan
| | - Ing-Lin Chang
- Department of Orthopedic Surgery, Changhua Christian Hospital , Changhua 50006, Taiwan
| | - Hsin-Yao Chen
- Department of Orthopedic Surgery, Changhua Christian Hospital , Changhua 50006, Taiwan
| | - Chen-Pu Hsieh
- Orthopedics & Sports Medicine Laboratory, Changhua Christian Hospital , Changhua 50006, Taiwan
- Department of Orthopedic Surgery, Changhua Christian Hospital , Changhua 50006, Taiwan
| | - Pin-Ju Chueh
- Institute of Biomedical Sciences, National Chung Hsing University , Taichung 40227, Taiwan
- Department of Biotechnology, Asia University , Taichung 41354, Taiwan
- Graduate Institute of Basic Medicine, China Medical University , Taichung 40402, Taiwan
- Department of Medical Research, China Medical University Hospital , Taichung 40402, Taiwan
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22
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Interactions of lauryl gallate with phospholipid components of biological membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:1821-32. [PMID: 27117642 DOI: 10.1016/j.bbamem.2016.04.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/18/2016] [Accepted: 04/21/2016] [Indexed: 11/22/2022]
Abstract
The effect of different amounts of lauryl gallate (LG) on properties of the model membranes of phosphatidylcholines (PC), differing in the presence of double bonds in the hydrocarbon chains, and phosphatidylglycerol (PG) was described in terms of phase behaviour of mixtures, interactions between both components, monolayers stability and their organization. The Langmuir monolayer technique was used to monitor the surface thermodynamics (i.e. the excess area and excess Gibbs energy of mixing) on the basis of surface pressure-area per molecule (π-A) isotherms. Simultaneously, morphology of the studied monolayers was visualized by the Brewster angle microscopy (BAM). This allowed evaluating the kind and magnitude of interactions which influence on the phase behaviour and structural properties of the monolayers. The obtained results can be helpful to reveal the mechanism of phospholipid antioxidant protection and important pharmacological (antimicrobial) role of lauryl gallate for production of effective therapeutic substances.
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Cheng CH, Cheng YP, Chang IL, Chen HY, Wu CC, Hsieh CP. Dodecyl gallate induces apoptosis by upregulating the caspase-dependent apoptotic pathway and inhibiting the expression of anti-apoptotic Bcl-2 family proteins in human osteosarcoma cells. Mol Med Rep 2015; 13:1495-500. [PMID: 26707422 PMCID: PMC4732860 DOI: 10.3892/mmr.2015.4717] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 10/28/2015] [Indexed: 12/25/2022] Open
Abstract
Dodecyl gallate (DG) is a gallic acid ester that has been shown to inhibit tumor growth. The aim of this study was to investigate the mechanism by which DG induces antiproliferative and apoptotic effects in MG-63 human osteosarcoma cells. Dose- and time-dependent cytotoxic effects of DG were determined using an MTT assay. The results showed that the half-maximal inhibitory concentration (IC50) of DG in MG-63 cells was 31.15 µM at 24 h, 10.66 µM at 48 h, and 9.06 µM at 72 h. Flow cytometric analysis demonstrated that exposure to 20 and 40 µM DG resulted in an increase in the sub-G1 phase population and in S-phase cell cycle arrest. Furthermore, western blot analysis of apoptosis-related protein expression revealed an increase in the activation of caspases 8 and 3, cleavage of poly (ADPribose) polymerase (PARP), and disruption of mitochondrial membrane permeability was measured by flow cytometry. An increase in the Bax/Bcl-2 ratio and a decrease in the expression of inhibitor of apoptosis protein (IAP) family members, namely X-linked inhibitor of apoptosis protein and survivin, were also observed following DG treatment. These data provide insight into the molecular mechanisms governing the ability of DG to induce apoptosis in human osteosarcoma cells in vitro.
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Affiliation(s)
- Chun-Hsiang Cheng
- Orthopedics & Sports Medicine Laboratory, Changhua Christian Hospital, Changhua 500‑06, Taiwan, R.O.C
| | - Yen-Po Cheng
- Division of Neurosurgery, Department of Surgery, Changhua Christian Hospital, Changhua 500‑06, Taiwan, R.O.C
| | - Ing-Lin Chang
- Department of Orthopedic Surgery, Changhua Christian Hospital, Changhua 500‑06, Taiwan, R.O.C
| | - Hsin-Yao Chen
- Department of Orthopedic Surgery, Changhua Christian Hospital, Changhua 500‑06, Taiwan, R.O.C
| | - Chia-Chieh Wu
- Department of Orthopedic Surgery, Changhua Christian Hospital, Changhua 500‑06, Taiwan, R.O.C
| | - Chen-Pu Hsieh
- Department of Orthopedic Surgery, Changhua Christian Hospital, Changhua 500‑06, Taiwan, R.O.C
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A conjugate of the lytic peptide Hecate and gallic acid: structure, activity against cervical cancer, and toxicity. Amino Acids 2015; 47:1433-43. [DOI: 10.1007/s00726-015-1980-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 03/30/2015] [Indexed: 02/05/2023]
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25
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Teng CLJ, Han SM, Wu WC, Hsueh CM, Tsai JR, Hwang WL, Hsu SL. Mechanistic aspects of lauryl gallate-induced differentiation and apoptosis in human acute myeloid leukemia cells. Food Chem Toxicol 2014; 71:197-206. [DOI: 10.1016/j.fct.2014.06.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 06/12/2014] [Accepted: 06/23/2014] [Indexed: 11/29/2022]
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26
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Jara JA, Castro-Castillo V, Saavedra-Olavarría J, Peredo L, Pavanni M, Jaña F, Letelier ME, Parra E, Becker MI, Morello A, Kemmerling U, Maya JD, Ferreira J. Antiproliferative and uncoupling effects of delocalized, lipophilic, cationic gallic acid derivatives on cancer cell lines. Validation in vivo in singenic mice. J Med Chem 2014; 57:2440-54. [PMID: 24568614 DOI: 10.1021/jm500174v] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tumor cells principally exhibit increased mitochondrial transmembrane potential (ΔΨ(m)) and altered metabolic pathways. The therapeutic targeting and delivery of anticancer drugs to the mitochondria might improve treatment efficacy. Gallic acid exhibits a variety of biological activities, and its ester derivatives can induce mitochondrial dysfunction. Four alkyl gallate triphenylphosphonium lipophilic cations were synthesized, each differing in the size of the linker chain at the cationic moiety. These derivatives were selectively cytotoxic toward tumor cells. The better compound (TPP(+)C10) contained 10 carbon atoms within the linker chain and exhibited an IC50 value of approximately 0.4-1.6 μM for tumor cells and a selectivity index of approximately 17-fold for tumor compared with normal cells. Consequently, its antiproliferative effect was also assessed in vivo. The oxygen consumption rate and NAD(P)H oxidation levels increased in the tumor cell lines (uncoupling effect), resulting in a ΔΨ(m) decrease and a consequent decrease in intracellular ATP levels. Moreover, TPP(+)C10 significantly inhibited the growth of TA3/Ha tumors in mice. According to these results, the antineoplastic activity and safety of TPP(+)C10 warrant further comprehensive evaluation.
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Affiliation(s)
- José A Jara
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile , Independencia 1027, Santiago 8380453, Chile
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27
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Alabi OA, Bakare AA, Filippin-Monteiro FB, Sierra JA, Creczynski-Pasa TB. Electronic waste leachate-mediated DNA fragmentation and cell death by apoptosis in mouse fibroblast (NIH/3T3) cell line. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 94:87-93. [PMID: 23726292 DOI: 10.1016/j.ecoenv.2013.05.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 05/03/2013] [Accepted: 05/06/2013] [Indexed: 05/15/2023]
Abstract
This study investigated the apoptotic effect of electronic waste on fibroblast cell line. Cells were treated with different concentrations of the leachate for 24h. Cell viability was detected by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test, nuclear morphology of cells was explored by acridine orange (AO)/ethidium bromide (EB) double staining, mitochondrial membrane potential was evaluated using JC-1 probe while cell cycle analysis was conducted using flow cytometry. The oxidative status was detected using DCFH-DA (dichlorofluorescin diacetate) probe and the relationship between cell death and ROS (reactive oxygen species) was investigated using N-acetylcysteine. Results showed an increased cell death as detected by MTT assay and AO/EB staining. Cell cycle analysis indicated an induction of sub/G1 events while JC-1 probe showed significant disruption of mitochondrial membrane potential. There was significant induction of ROS, while N-acetylcysteine protected the cells from DNA damage. These suggest apoptotic pathway as a possible mechanism of e-waste induced cyto-genotoxicity.
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Affiliation(s)
- Okunola A Alabi
- Department of Biosciences and Biotechnology, Babcock University, Ilisan Remo, Ogun State, Nigeria
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28
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ZHU JINGJING, VAN DE VEN WIM, VERMORKEN ALPHONS. Polyphenols with indirect proprotein convertase inhibitory activity. Int J Oncol 2013; 43:947-55. [DOI: 10.3892/ijo.2013.2009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 05/30/2013] [Indexed: 11/06/2022] Open
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29
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Locatelli C, Filippin-Monteiro FB, Creczynski-Pasa TB. Alkyl esters of gallic acid as anticancer agents: A review. Eur J Med Chem 2013; 60:233-9. [DOI: 10.1016/j.ejmech.2012.10.056] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 09/29/2012] [Accepted: 10/03/2012] [Indexed: 12/11/2022]
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