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Aschemacher NA, Gegenschatz SA, Teglia CM, Siano ÁS, Gutierrez FA, Goicoechea HC. Highly sensitive and selective electrochemical sensor for simultaneous determination of gallic acid, theophylline and caffeine using poly(l-proline) decorated carbon nanotubes in biological and food samples. Talanta 2024; 267:125246. [PMID: 37774452 DOI: 10.1016/j.talanta.2023.125246] [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: 06/12/2023] [Revised: 09/18/2023] [Accepted: 09/23/2023] [Indexed: 10/01/2023]
Abstract
In this work, a novel, simple and reproducible poly(l-proline)/functionalized multi-walled carbon nanotube composite on glassy carbon electrode (poly(PRO)-MWCNTs/GCE) was developed as an electrochemical sensor for the simultaneous determination of gallic acid (GA), theophylline (TP) and caffeine (CAF) by differential pulse voltammetry (DPV). The sensing platform was optimized by experimental design and response surface methodology, using various factors affecting polymerization and detection, such as electropolymerization time and potential, and pH, respectively. As a result, the dispersion conditions were the mixing of 1.78 mg MWCNTs with 1.00 mL l-proline solution to 4.14 mg mL-1 (in SDBS 0.5%), followed by 21 min of sonication with electropolymerization by 16 cyclic scans. In addition, the final analysis was performed at a pH of 3.00 and prior accumulation at 0.350 V for 40 s. The electrochemical behavior of GA, TP and CAF on the optimized sensor was investigated. As a result, the electrode preserves and synergistically combines the properties of each modifier. This new electrochemical sensor showed superior electrocatalytic properties for the oxidation of GA, TP and CAF, which significantly improved the sensitivity of the three compounds. Under the optimized experimental conditions, the detection limits achieved by S/N were 0.03, 0.04 and 0.11 μmol L-1 for GA, TP and CAF, respectively. The analysis of real samples was successfully performed in human breast milk, tea, infusion of yerba mate, coffee, Coca-Cola zero and energy drink, showing good recoveries, ranged between 87 and 108%. The proposed sensor also showed good selectivity, repeatability and reproducibility, indicating feasibility and reliability. This is the first time that the l-proline monomer is used as a dispersant for MWCNTs and as a precursor for the in-situ polymerization of the proline polymer. Previously, the electropolymerizations were carried out with the monomer in solution rather than as an exfoliant of MWCNTs, where the polymer is electrosynthesized between MWCNTs rather than on them. In this way, the large specific surface area and strong adsorption ability of the nanomaterial are enhanced, and the ability to promote electron transfer reaction is increased, which provides enough effective reaction sites.
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Affiliation(s)
- Nicolás A Aschemacher
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Sofía A Gegenschatz
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Carla M Teglia
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina
| | - Álvaro S Siano
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina
| | - Fabiana A Gutierrez
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina.
| | - Héctor C Goicoechea
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina
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Paradoxical Radiosensitizing Effect of Carnosic Acid on B16F10 Metastatic Melanoma Cells: A New Treatment Strategy. Antioxidants (Basel) 2022; 11:antiox11112166. [PMID: 36358539 PMCID: PMC9686564 DOI: 10.3390/antiox11112166] [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: 09/23/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Carnosic acid (CA) is a phenolic diterpene characterized by its high antioxidant activity; it is used in industrial, cosmetic, and nutritional applications. We evaluated the radioprotective capacity of CA on cells directly exposed to X-rays and non-irradiated cells that received signals from X-ray treated cells (radiation induced bystander effect, RIBE). The genoprotective capacity was studied by in vivo and in vitro micronucleus assays. Radioprotective capacity was evaluated by clonogenic cell survival, MTT, apoptosis and intracellular glutathione assays comparing radiosensitive cells (human prostate epithelium, PNT2) with radioresistant cells (murine metastatic melanoma, B16F10). CA was found to exhibit a genoprotective capacity in cells exposed to radiation (p < 0.001) and in RIBE (p < 0.01). In PNT2 cells, considered as normal cells in our study, CA achieved 97% cell survival after exposure to 20 Gy of X-rays, eliminating 67% of radiation-induced cell death (p < 0.001), decreasing apoptosis (p < 0.001), and increasing the GSH/GSSH ratio (p < 0.01). However, the administration of CA to B16F10 cells decreased cell survival by 32%, increased cell death by 200% (p < 0.001) compared to irradiated cells, and increased cell death by 100% (p < 0.001) in RIBE bystander cells (p < 0.01). Furthermore, it increased apoptosis (p < 0.001) and decreased the GSH/GSSG ratio (p < 0.01), expressing a paradoxical radiosensitizing effect in these cells. Knowing the potential mechanisms of action of substances such as CA could help to create new applications that would protect healthy cells and exclusively damage neoplastic cells, thus presenting a new desirable strategy for cancer patients in need of radiotherapy.
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Mazzari ALDA, Lacerda MG, Milton FA, Mulin Montechiari Machado JA, Sinoti SBP, Toullec AS, Rodrigues PM, Neves FDAR, Simeoni LA, Silveira D, Prieto JM. In vitro effects of European and Latin-American medicinal plants in CYP3A4 gene expression, glutathione levels, and P-glycoprotein activity. Front Pharmacol 2022; 13:826395. [PMID: 36278236 PMCID: PMC9579425 DOI: 10.3389/fphar.2022.826395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 08/31/2022] [Indexed: 11/18/2022] Open
Abstract
Many medicinal plants species from European -such as Artemisia absinthium, Equisetum arvense, Lamium album, Malva sylvestris, Morus nigra, Passiflora incarnata, Frangula purshiana, and Salix alba- as well as Latin American traditions -such as Libidibia ferrea, Bidens pilosa, Casearia sylvestris, Costus spicatus, Monteverdia ilicifolia, Persea americana, Schinus terebinthifolia, Solidago chilensis, Syzygium cumini, Handroanthus impetiginosus, and Vernonanthura phosphorica- are shortlisted by the Brazilian National Health System for future clinical use. However, they lack many data on their action upon some key ADME targets. In this study, we assess non-toxic concentrations (up to100 μg/ml) of their infusions for in vitro ability to modulate CYP3A4 mRNA gene expression and intracellular glutathione levels in HepG2 cells, as well as P-glycoprotein (P-gp) activity in vincristine-resistant Caco-2 cells (Caco-2 VCR). We further investigated the activation of human pregnane X receptor (hPXR) in transiently co-transfected HeLa cells and the inhibition of Gamma-glutamyl transferase (GGT) in HepG2 cells. Our results demonstrate L. ferrea, C. sylvestris, M. ilicifolia, P. americana, S. terebinthifolia, S. cumini, V. phosphorica, E. arvense, P. incarnata, F. purshiana, and S. alba can significantly increase CYP3A4 mRNA gene expression in HepG2 cells. Only F. purshiana shown to do so likely via hPXR activation. P-gp activity was affected by L. ferrea, F. purshiana, S. terebinthifolia, and S. cumini. Total intracellular glutathione levels were significantly depleted by exposure to all extracts except S. alba and S. cumini This was accompanied by a lower GGT activity in the case of C. spicatus, P. americana, S. alba, and S. terebinthifolia, whilst L. ferrea, P. incarnata and F. purshiana increased it. Surprisingly, S. cumini aqueous extract drastically decreased GGT activity (−48%, p < 0.01). In conclusion, this preclinical study shows that the administration of some of these herbal medicines causes in vitro disturbances to key drug metabolism mechanisms. We recommend active pharmacovigilance for Libidibia ferrea (Mart.) L. P. Queiroz, Frangula purshiana Cooper, Schinus terebinthifolia Raddi, and Salix alba L. which were able to alter all targets in our preclinical study.
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Affiliation(s)
| | | | - Flora Aparecida Milton
- Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
- Instituto de Saúde de Nova Friburgo, Universidade Federal Fluminense, Niterói, Brazil
| | | | | | | | | | - Francisco de Assis Rocha Neves
- Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
- *Correspondence: Francisco de Assis Rocha Neves, ; Dâmaris Silveira, ; Jose Maria Prieto,
| | | | - Dâmaris Silveira
- Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
- *Correspondence: Francisco de Assis Rocha Neves, ; Dâmaris Silveira, ; Jose Maria Prieto,
| | - Jose Maria Prieto
- School of Pharmacy, University College London, London, United Kingdom
- Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, United Kingdom
- *Correspondence: Francisco de Assis Rocha Neves, ; Dâmaris Silveira, ; Jose Maria Prieto,
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ABUALHASAN M, JARADAT N, AL-RIMAWI F, SHAHWAN M, MANSOUR D, ALHEND Z, ALSOROGHLI Y, MOUSA A. Bioactivity evaluation of synthesized flavone analogs. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.57122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brčić Karačonji I, Jurica K, Gašić U, Dramićanin A, Tešić Ž, Milojković Opsenica D. Comparative Study on the Phenolic Fingerprint and Antioxidant Activity of Strawberry Tree (Arbutus unedo L.) Leaves and Fruits. PLANTS 2021; 11:plants11010025. [PMID: 35009028 PMCID: PMC8747429 DOI: 10.3390/plants11010025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 11/16/2022]
Abstract
The strawberry tree (Arbutus unedo L., Ericaceae family) is an evergreen Mediterranean shrub whose leaves and fruits are used in traditional medicine due to their antioxidant, antimicrobial, antidiabetic, diuretic, and antiproliferative properties. The health benefits are mainly attributed to the presence of phenolic compounds. The aim of this study was to compare the phenolic profiles, total phenolic content (TPC), and radical scavenging activity (RSA) of A. unedo leaves and fruits collected at two locations in Croatia. Phenolic profiles were identified using an ultra-high-performance liquid chromatograph (UHPLC) coupled with a hybrid mass spectrometer (LTQ Orbitrap MS). TPC was determined by Folin–Ciocalteu’s assay, while RSA was investigated using DPPH reagent. A total of 64 phenolics (60 and 42 compounds in leaves and fruits, respectively) were identified. Hyperoside and flavan-3-ols were predominant compounds in leaves, while gallocatechin and catechin were the major compounds found in fruits. To the authors’ knowledge, 16 and 5 phenolics in leaves and fruits, respectively, were reported for the first time. Principal component analysis (PCA) showed that UHPLC-LTQ Orbitrap MS could be used to identify which phenolics were able to discriminate samples regarding plant tissue and geographical origin. TPC in leaves and fruits were in the ranges of 67.07–104.74 and 16.78–25.86 mg gallic acid equivalents (GAE)/g dried weight (dw), respectively. RSA for leaves and fruits were in the ranges of 408.92–430.98 and 74.30–104.04 μmol Trolox equivalents (TE)/g dw, respectively. The number of identified phenolics was lower in fruits compared to leaves. Such a large number of bioactive phenolics identified and the strong antioxidant activity pointed to A. unedo as a promising health-promoting plant and natural food preservative.
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Affiliation(s)
- Irena Brčić Karačonji
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, Croatia
- Faculty of Health Studies, University of Rijeka, Viktora Cara Emina 5, 51000 Rijeka, Croatia
- Correspondence: (I.B.K.); (U.G.)
| | - Karlo Jurica
- Special Security Operations Directorate, Ministry of the Interior, Ulica grada Vukovara 33, 10000 Zagreb, Croatia;
| | - Uroš Gašić
- Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
- Correspondence: (I.B.K.); (U.G.)
| | - Aleksandra Dramićanin
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia; (A.D.); (Ž.T.); (D.M.O.)
| | - Živoslav Tešić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia; (A.D.); (Ž.T.); (D.M.O.)
| | - Dušanka Milojković Opsenica
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia; (A.D.); (Ž.T.); (D.M.O.)
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Tuli HS, Mistry H, Kaur G, Aggarwal D, Garg VK, Mittal S, Yerer MB, Sak K, Khan MA. Gallic acid: a dietary polyphenol that exhibits anti-neoplastic activities by modulating multiple oncogenic targets. Anticancer Agents Med Chem 2021; 22:499-514. [PMID: 34802408 DOI: 10.2174/1871520621666211119085834] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/08/2021] [Accepted: 06/18/2021] [Indexed: 11/22/2022]
Abstract
Phytochemicals are being used for thousands of years to prevent dreadful malignancy. Side effects of existing allopathic treatment have also initiated intense research in the field of bioactive phytochemicals. Gallic acid, a natural polyphenolic compound, exists freely as well as in polymeric forms. The anti-cancer properties of gallic acid are indomitable by a variety of cellular pathways such as induction of programmed cell death, cell cycle apprehension, reticence of vasculature and tumor migration, and inflammation. Furthermore, gallic acid is found to show synergism with other existing chemotherapeutic drugs. Therefore, the antineoplastic role of gallic acid suggests its promising therapeutic candidature in the near future. The present review describes all these aspects of gallic acid at a single platform. In addition nanotechnology-mediated approaches are also discussed to enhance bioavailability and therapeutic efficacy.
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Affiliation(s)
- Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, Haryana. India
| | - Hiral Mistry
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's NMIMS, Mumbai 400056, Maharashtra. India
| | - Ginpreet Kaur
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's NMIMS, Mumbai 400056, Maharashtra. India
| | - Diwakar Aggarwal
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, Haryana. India
| | - Vivek Kumar Garg
- Department of Medical Laboratory Technology, University Institute of Applied Health Sciences, Chandigarh University, Gharuan, Mohali - 140413, Punjab. India
| | - Sonam Mittal
- School of Biotechnology, Jawaharlal Nehru University, New Delhi. India
| | - Mükerrem Betül Yerer
- Erciyes University, Faculty of Pharmacy Department of Pharmacology, Erciyes University Drug Application and Research Center, 05056784551. Turkey
| | | | - Md Asaduzzaman Khan
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou 646000. China
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Su X, Xian C, Gao M, Liu G, Wu J. Edible Materials in Tissue Regeneration. Macromol Biosci 2021; 21:e2100114. [PMID: 34117831 DOI: 10.1002/mabi.202100114] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/28/2021] [Indexed: 11/07/2022]
Abstract
Edible materials have attracted increasing attention because of their excellent properties including availability, biocompatibility, biological activity, and biodegradability. Natural polysaccharides, phenolic compounds, and proteins are widely used in tissue regeneration. To better characterize their healing effect, this review article describes the applications of edible materials in tissue regeneration including wound healing and bone tissue regeneration. As an introduction to the topic, their sources and main bioactive properties are discussed. Then, the mechanism by which they facilitate wound healing based on their hemostasis, antibacterial, anti-inflammatory, and antioxidant properties is systematically investigated. Moreover, a more comprehensive discussion is presented on the approaches by which edible materials can be used as scaffolds or agents for the provision of the components of natural bones for regulating the level of osteogenesis-related cytokines to enhance bone repair. Finally, the prospects of edible materials for tissue regeneration are discussed.
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Affiliation(s)
- Xiaohan Su
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen, 518057, China
| | - Caihong Xian
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen, 518057, China
| | - Ming Gao
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China
| | - Guiting Liu
- The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, China
| | - Jun Wu
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen, 518057, China
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Recent developments of gallic acid derivatives and their hybrids in medicinal chemistry: A review. Eur J Med Chem 2020; 204:112609. [DOI: 10.1016/j.ejmech.2020.112609] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 02/07/2023]
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Novel combination therapy for melanoma induces apoptosis via a gap junction positive feedback mechanism. Oncotarget 2020; 11:3443-3458. [PMID: 32973969 PMCID: PMC7500108 DOI: 10.18632/oncotarget.27732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 08/05/2020] [Indexed: 11/25/2022] Open
Abstract
Metastatic melanoma cells overexpressing gap junctions were assayed for their ability to propagate cell death by a novel combination therapy that generates reactive oxygen species (ROS) by both 1) non-thermal plasma (NTP) and 2) tirapazamine (TPZ) under hypoxic conditions. Results demonstrate additive-to-synergistic effects of combination therapy compared to each agent individually. NTP induces highly localized cell death in target areas whereas TPZ partially reduces viability over the total surface area. However, when high gap junction expression was induced in melanoma cells, effects of combination NTP+TPZ therapy was augmented, spreading cell death across the entire plate. Similarly, in vivo studies of human metastatic melanoma in a mouse tumor model demonstrate that the combined effect of NTP+TPZ causes a 90% reduction in tumor volume, specifically in the model expressing gap junctions. Treatment with NTP+TPZ increases gene expression in the apoptotic pathway and oxidative stress while decreasing genes related to cell migration. Immune response was also elicited through differential regulation of cytokines and chemokines, suggesting potential for this therapy to induce a cytotoxic immune response with fewer side effects than current therapies. Interestingly, the gap junction protein, Cx26 was upregulated following treatment with NTP+TPZ and these gap junctions were shown to maintain functionality during the onset of treatment. Therefore, we propose that gap junctions both increase the efficacy of NTP+TPZ and perpetuate a positive feedback mechanism of gap junction expression and tumoricidal activity. Our unique approach to ROS induction in tumor cells with NTP+TPZ shows potential as a novel cancer treatment.
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Patterns of cell death induced by metformin in human MCF-7 breast cancer cells. Pathol Res Pract 2020; 216:153199. [PMID: 32932214 DOI: 10.1016/j.prp.2020.153199] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/26/2020] [Accepted: 08/29/2020] [Indexed: 12/17/2022]
Abstract
The ability to evade apoptosis is an important mechanism of drug resistance and tumor progression in breast cancer. The induction of different pathways of cell death could be an important strategy to limit tumor progression. Metformin, a drug used to treat type two diabetes, has demonstrated promising results in breast cancer experiments. However, little is known about the patterns of cell death induced by this drug. We analyzed the involvement of apoptosis, necroptosis and ferroptosis in the toxicity of metformin in MCF-7 cells, evaluating proliferation, viability and oxidative stress. It was used different inhibitors of cell death: Z-VAD, a pan-caspase inhibitor that blocks apoptosis; Necrostatin-1, which inhibits RIPK1 activity and blocks necroptosis; and the iron chelator, deferoxamine, that chelates iron and prevents ferroptosis. The participation of oxidative stress was analyzed through the evaluation of total thiols, reduced glutathione (GSH) and malondialdehyde (MDA). Our results showed that metformin increased cell death, reduced proliferation, thiol and GSH and increased MDA in cells. After the association between metformin and Z-VAD or Necrostatin-1, the drug toxicity was abolished. Ferroptosis did not significantly enrolled in metformin action against MCF-7 cells. The preservation of cellular antioxidants was found in all situations that cell death was blocked. Together, these results reveals that metformin induces necroptosis and apoptosis in MCF-7 cells and oxidative stress generation play a role in these two pathways of cell death. This information could help future studies to improve strategies to breast cancer treatment.
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Alberdi-Cedeño J, Ibargoitia ML, Guillén MD. Study of the In Vitro Digestion of Olive Oil Enriched or Not with Antioxidant Phenolic Compounds. Relationships between Bioaccessibility of Main Components of Different Oils and Their Composition. Antioxidants (Basel) 2020; 9:antiox9060543. [PMID: 32575754 PMCID: PMC7346224 DOI: 10.3390/antiox9060543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/11/2020] [Accepted: 06/17/2020] [Indexed: 12/13/2022] Open
Abstract
The changes provoked by in vitro digestion in the lipids of olive oil enriched or not with different phenolic compounds were studied by proton nuclear magnetic resonance (1H NMR) and solid phase microextraction followed by gas chromatography/mass spectrometry (SPME-GC/MS). These changes were compared with those provoked in the lipids of corn oil and of virgin flaxseed oil submitted to the same digestive conditions. Lipolysis and oxidation were the two reactions under consideration. The bioaccessibility of main and minor components of olive oil, of phenolic compounds added, and of compounds formed as consequence of the oxidation, if any, were matters of attention. Enrichment of olive oil with antioxidant phenolic compounds does not affect the extent of lipolysis, but reduces the oxidation degree to minimum values or avoids it almost entirely. The in vitro bioaccessibility of nutritional and bioactive compounds was greater in the olive oil digestate than in those of other oils, whereas that of compounds formed in oxidation was minimal, if any. Very close quantitative relationships were found between the composition of the oils in main components and their in vitro bioaccessibility. These relationships, some of which have predictive value, can help to design lipid diets for different nutritional purposes.
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Masmoudi M, Ammar I, Ghribi H, Attia H. Physicochemical, radical scavenging activity and sensory properties of a soft cheese fortified with Arbutus unedo L. extract. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100579] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Marinello PC, Cella P, Testa M, Guirro P, Brito W, Borges F, Cecchini R, Cecchini A, Duarte J, Deminice R. Creatine supplementation exacerbates ethanol-induced hepatic damage in mice. Nutrition 2019; 66:122-130. [DOI: 10.1016/j.nut.2019.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/02/2019] [Accepted: 05/26/2019] [Indexed: 02/08/2023]
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Feuser PE, Tonini ML, Jacques AV, Santos da Silva MC, Steindel M, Sayer C, Hermes de Araújo PH. Increased in vitro leishmanicidal activity of octyl gallate loaded poly(methyl methacrylate) nanoparticles. Pharm Dev Technol 2019; 24:593-599. [DOI: 10.1080/10837450.2018.1547747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Paulo Emilio Feuser
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Maiko Luis Tonini
- Department of Microbiology Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
- Biomedical Sciences Research Complex, University of St Andrews, Fife, UK
| | - Amanda Virtuoso Jacques
- Department of Clinical Analyses, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | - Mario Steindel
- Department of Microbiology Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Claudia Sayer
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
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Carrara IM, Melo GP, Bernardes SS, Neto FS, Ramalho LNZ, Marinello PC, Luiz RC, Cecchini R, Cecchini AL. Looking beyond the skin: Cutaneous and systemic oxidative stress in UVB-induced squamous cell carcinoma in hairless mice. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 195:17-26. [PMID: 31035030 DOI: 10.1016/j.jphotobiol.2019.04.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 12/25/2022]
Abstract
Cumulative ultraviolet (UV) exposure is associated with squamous skin cell carcinoma. UV radiation induces oxidative modifications in biomolecules of the skin leading to photocarcinogenesis. Indeed, the cyclobutene pyrimidine dimers and other dimers formed by photoaddition between carbon-carbon bonds also have an important role in the initiation process. However, information on the systemic redox status during these processes is scarce. Thus, we investigated the systemic redox profile in UVB-induced squamous cell carcinoma in mice. Female hairless mice were exposed to UVB radiation (cumulative dose = 17.1 J/cm2). The dorsal skin of these mice developed actinic keratosis (AK) and squamous cell carcinoma (SCC) and presented increased levels of oxidative and nitrosative stress biomarkers (4-hydroxy-2-nonenal and 3-nitrotyrosine), and decreased antioxidant defenses. Systemically, we observed the consumption of plasmatic antioxidant defenses and increased levels of advanced oxidized protein products (AOPP), an oxidative stress product derived from systemic inflammatory response. Taken together, our results indicate that UVB chronic irradiation leads not only to adjacent and tumoral oxidative stress in the skin, but it systemically is reflected through the blood. These new findings clarify some aspects of the pathogenesis of SCC and should assist in formulating better chemoprevention strategies, while avoiding additional primary SCC development and metastasis.
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Affiliation(s)
- Iriana Moratto Carrara
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil; Laboratory of Pathophysiology and Free Radicals, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil
| | - Gabriella Pasqual Melo
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil; Laboratory of Pathophysiology and Free Radicals, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil
| | - Sara Santos Bernardes
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil; Laboratory of Healthy Sciences Research, Federal University of Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil, UFGD, R. João Rosa Góes, 1761 - Vila Progresso, Dourados, MS, 79825-070, Brazil.
| | - Fernando Souza Neto
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil; Laboratory of Pathophysiology and Free Radicals, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil
| | - Leandra Naira Zambelli Ramalho
- Department of Pathology, Ribeirão Preto Medical School (FMRP), University of São Paulo (USP), FMRP, Av. Bandeirantes, 3900 - Monte Alegre, Ribeirão Preto, SP, 14049-900, Brazil.
| | - Poliana Camila Marinello
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil
| | - Rodrigo Cabral Luiz
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil
| | - Rubens Cecchini
- Laboratory of Pathophysiology and Free Radicals, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil
| | - Alessandra Lourenço Cecchini
- Laboratory of Molecular Pathology, Londrina State University (UEL), Londrina, Paraná, Brazil, UEL, Rod. Celso Garcia Cid, PR-445, km 380, 86051-990 Londrina, Paraná, Brazil.
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Brus M, Gradišnik L, Trapecar M, Škorjanc D, Frangež R. Beneficial effects of water-soluble chestnut (Castanea sativa Mill.) tannin extract on chicken small intestinal epithelial cell culture. Poult Sci 2018; 97:1271-1282. [PMID: 29444319 DOI: 10.3382/ps/pex424] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 12/04/2017] [Indexed: 11/20/2022] Open
Abstract
Feed and water supplementation with powdered hydrolyzable tannins from chestnut represents a valuable alternative strategy to antibiotics in animal nutrition. In this study, we evaluated the effects and safety of a water-soluble form of chestnut tannin (WST) in an in vitro model of chicken small intestinal epithelial cells (CSIEC). A chicken cell culture was established, and WST in concentrations of 0.025, 0.05, 0.1, and 0.2% were tested for cytotoxicity, cell proliferation, metabolic activity, production of reactive oxygen species, intracellular antioxidative potential, genotoxicity, and influence on the epithelia cell cycle. The tested concentrations showed a significant (P < 0.05) greater proliferative effect on CSIEC than the control medium (maximal proliferation at 0.1% WST as determined by optical density measurements). The 0.2% concentration of WST was cytotoxic, causing significantly higher (P < 0.05) nitric oxide and hydrogen peroxide production but with no short-term genotoxicity. Although increasing the concentration caused a decline in the metabolism of challenged cells (the lowest at 0.1% WST), metabolic activity remained higher than that in control cells. The antioxidant potential was 75% better and significantly (P < 0.05) higher in the 0.1% WST cultured cells compared to control. In conclusion, the cultured CSIEC are useful tools in basic and clinical research for the study of intestinal physiology, as they retain physiological and biochemical properties and epithelial morphology close to the original tissue and, in many ways, reflect the in vivo state. Our results indicate that WST exert a beneficial effect on intestinal epithelia, since they: i) stimulate proliferation of enterocytes; ii) increase antioxidative potential; iii) have no genotoxic effect; and iv) do not affect cellular metabolism. Our results reinforce the importance of WST as promising candidates for further evaluation and use in commercial broiler farm production.
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Affiliation(s)
- M Brus
- Department of Animal Science, Faculty of Agriculture and Life Sciences, University of Maribor, Maribor, Slovenia
| | - L Gradišnik
- Institute of Biomedical Sciences, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - M Trapecar
- Institute of Biomedical Sciences, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - D Škorjanc
- Department of Animal Science, Faculty of Agriculture and Life Sciences, University of Maribor, Maribor, Slovenia
| | - R Frangež
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
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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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Gallic acid modulates phenotypic behavior and gene expression in oral squamous cell carcinoma cells by interfering with leptin pathway. Pathol Res Pract 2017; 214:30-37. [PMID: 29254802 DOI: 10.1016/j.prp.2017.11.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 11/16/2017] [Accepted: 11/28/2017] [Indexed: 12/31/2022]
Abstract
Gallic acid is a polyphenolic compost appointed to interfere with neoplastic cells behavior. Evidence suggests an important role of leptin in carcinogenesis pathways, inducing a proliferative phenotype. We investigated the potential of gallic acid to modulate leptin-induced cell proliferation and migration of oral squamous cell carcinoma cell lines. The gallic acid effect on leptin secretion by oral squamous cell carcinoma cells, as well as the underlying molecular mechanisms, was also assessed. For this, we performed proliferation, migration, immunocytochemical and qPCR assays. The expression levels of cell migration-related genes (MMP2, MMP9, Col1A1, and E-cadherin), angiogenesis (HIF-1α, mir210), leptin signaling (LepR, p44/42 MAPK), apoptosis (casp-3), and secreted leptin levels by oral squamous cell carcinoma cells were also measured. Gallic acid decreased proliferation and migration of leptin-treated oral squamous cell carcinoma cells, and reduced mRNA expression of MMP2, MMP9, Col1A1, mir210, but did not change HIF-1α. Gallic acid decreased levels of leptin secreted by oral squamous cell carcinoma cells, accordingly with downregulation of p44/42 MAPK expression. Thus, gallic acid appears to break down neoplastic phenotype of oral squamous cell carcinoma cells by interfering with leptin pathway.
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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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Peredo-Silva L, Fuentes-Retamal S, Sandoval-Acuña C, Pavani M, Maya JD, Castro-Castillo V, Madrid-Rojas M, Rebolledo S, Kemmerling U, Parra E, Ferreira J. Derivatives of alkyl gallate triphenylphosphonium exhibit antitumor activity in a syngeneic murine model of mammary adenocarcinoma. Toxicol Appl Pharmacol 2017; 329:334-346. [PMID: 28647477 DOI: 10.1016/j.taap.2017.06.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 06/07/2017] [Accepted: 06/19/2017] [Indexed: 02/07/2023]
Abstract
We previously demonstrated that alkyl gallates coupled to triphenylphosphine have a selective and efficient antiproliferative effect by inducing mitochondrial uncoupling in vitro due to the increased mitochondrial transmembrane potential of tumor cells. Therefore, in this work, the in vivo antitumor activities of alkyl gallate triphenylphosphonium derivatives (TPP+C8, TPP+C10 and TPP+C12) were evaluated in a syngeneic murine model of breast cancer. We found that TPP+C10 increased the cytosolic ADP/ATP ratio and significantly increased the AMP levels in a concentration-dependent manner in TA3/Ha murine mammary adenocarcinoma cells. Interestingly, TPP+C10 induced a decrease in the levels of cellular proliferation markers and promoted caspase-3 activation in tumor-bearing mice. Additionally, TPP+C10 inhibited tumor growth in the syngeneic mouse model. Importantly, 30days of intraperitoneal (i.p.) administration of the combination of TPP+C10 (10mg/kg/48h) and the antibiotic doxycycline (10mg/kg/24h) completely eliminated the subcutaneous tumor burden in mice (n=6), without any relapses at 60days post-treatment. This enhancement of the individual activities of TPP+C10 and doxycycline is due to the uncoupling of oxidative phosphorylation by TPP+C10 and the inhibition of mitochondrial biogenesis by doxycycline, as demonstrated by loss of mitochondrial mass and overexpression of PGC1-α as an adaptive response. Moreover, i.p. administration of TPP+C10 (10mg/kg/24h) to healthy mice did not produce toxicity or damage in organs important for drug metabolism and excretion, as indicated by hematological, biochemical and histological assessments. These findings suggest that the combination of TPP+C10 with doxycycline is a valuable candidate therapy for breast cancer management.
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Affiliation(s)
- Liliana Peredo-Silva
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile
| | - Sebastián Fuentes-Retamal
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile
| | - Cristian Sandoval-Acuña
- Institute of Biotechnology, Czech Academy of Sciences, Průmyslová 595, Vestec, 25250, Prague, Czech Republic
| | - Mario Pavani
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile
| | - Juan D Maya
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile
| | - Vicente Castro-Castillo
- Department of Organic and Physical Chemistry, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, Santiago 8380494, Chile
| | - Matías Madrid-Rojas
- Department of Chemistry, Faculty of Basic Sciences, Metropolitan University of Educational Sciences, Av. José Pedro Alessandri 774, Santiago 7760197, Chile
| | - Solange Rebolledo
- Department of Chemistry, Faculty of Basic Sciences, Metropolitan University of Educational Sciences, Av. José Pedro Alessandri 774, Santiago 7760197, Chile
| | - Ulrike Kemmerling
- Program of Anatomy and Developmental Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile
| | - Eduardo Parra
- School of Medicine, Faculty of Health Sciences, University of Tarapacá, Av. General Velásquez 1775, Arica 1000007, Chile
| | - Jorge Ferreira
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Av. Independencia 1027, Santiago 8380453, Chile.
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21
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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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22
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Silva I, Polaquini C, Regasini L, Ferreira H, Pavan F. Evaluation of cytotoxic, apoptotic, mutagenic, and chemopreventive activities of semi-synthetic esters of gallic acid. Food Chem Toxicol 2017; 105:300-307. [DOI: 10.1016/j.fct.2017.04.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 04/03/2017] [Accepted: 04/24/2017] [Indexed: 12/30/2022]
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23
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Sanches LJ, Marinello PC, Panis C, Fagundes TR, Morgado-Díaz JA, de-Freitas-Junior JCM, Cecchini R, Cecchini AL, Luiz RC. Cytotoxicity of citral against melanoma cells: The involvement of oxidative stress generation and cell growth protein reduction. Tumour Biol 2017; 39:1010428317695914. [DOI: 10.1177/1010428317695914] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Citral is a natural compound that has shown cytotoxic and antiproliferative effects on breast and hematopoietic cancer cells; however, there are few studies on melanoma cells. Oxidative stress is known to be involved in all stages of melanoma development and is able to modulate intracellular pathways related to cellular proliferation and death. In this study, we hypothesize that citral exerts its cytotoxic effect on melanoma cells by the modulation of cellular oxidative status and/or intracellular signaling. To test this hypothesis, we investigated the antiproliferative and cytotoxic effects of citral on B16F10 murine melanoma cells evaluating its effects on cellular oxidative stress, DNA damage, cell death, and important signaling pathways, as these pathways, namely, extracellular signal-regulated kinases 1/2 (ERK1/2), AKT, and phosphatidylinositol-3 kinase, are involved in cell proliferation and differentiation. The p53 and nuclear factor kappa B were also investigated due to their ability to respond to intracellular stress. We observed that citral exerted antiproliferative and cytotoxic effects in B16F10; induced oxidative stress, DNA lesions, and p53 nuclear translocation; and reduced nitric oxide levels and nuclear factor kappa B, ERK1/2, and AKT. To investigate citral specificity, we used non-neoplastic human and murine cells, HaCaT (human skin keratinocytes) and NIH-3T3 cells (murine fibroblasts), and observed that although citral effects were not specific for cancer cells, non-neoplastic cells were more resistant to citral than B16F10. These findings highlight the potential clinical utility of citral in melanoma, with a mechanism of action involving the oxidative stress generation, nitric oxide depletion, and interference in signaling pathways related to cell proliferation.
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Affiliation(s)
- Larissa Juliani Sanches
- Laboratory of Molecular Pathology, Department of Pathological Sciences, Universidade Estadual de Londrina, Londrina, Brazil
| | - Poliana Camila Marinello
- Laboratory of Molecular Pathology, Department of Pathological Sciences, Universidade Estadual de Londrina, Londrina, Brazil
| | - Carolina Panis
- Laboratory of Inflammatory Mediators, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão, Brazil
| | - Tatiane Renata Fagundes
- Laboratory of Molecular Pathology, Department of Pathological Sciences, Universidade Estadual de Londrina, Londrina, Brazil
| | | | | | - Rubens Cecchini
- Laboratory of Pathophysiology of Free Radicals, Department of Pathological Sciences, Universidade Estadual de Londrina, Londrina, Brazil
| | - Alessandra Lourenço Cecchini
- Laboratory of Molecular Pathology, Department of Pathological Sciences, Universidade Estadual de Londrina, Londrina, Brazil
| | - Rodrigo Cabral Luiz
- Laboratory of Molecular Pathology, Department of Pathological Sciences, Universidade Estadual de Londrina, Londrina, Brazil
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Mazzari ALDA, Milton F, Frangos S, Carvalho ACB, Silveira D, de Assis Rocha Neves F, Prieto JM. In vitro Effects of Four Native Brazilian Medicinal Plants in CYP3A4 mRNA Gene Expression, Glutathione Levels, and P-Glycoprotein Activity. Front Pharmacol 2016; 7:265. [PMID: 27594838 PMCID: PMC4991120 DOI: 10.3389/fphar.2016.00265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 08/05/2016] [Indexed: 01/09/2023] Open
Abstract
Erythrina mulungu Benth. (Fabaceae), Cordia verbenacea A. DC. (Boraginaceae), Solanum paniculatum L. (Solanaceae) and Lippia sidoides Cham. (Verbenaceae) are medicinal plant species native to Brazil shortlisted by the Brazilian National Health System for future clinical use. However, nothing is known about their effects in metabolic and transporter proteins, which could potentially lead to herb-drug interactions (HDI). In this work, we assess non-toxic concentrations (100 μg/mL) of the plant infusions for their in vitro ability to modulate CYP3A4 mRNA gene expression and intracellular glutathione levels in HepG2 cells, as well as P-glycoprotein (P-gp) activity in vincristine-resistant Caco-2 cells (Caco-2 VCR). Their mechanisms of action were further studied by measuring the activation of human pregnane X receptor (hPXR) in transiently co-transfected HeLa cells and the inhibition of γ-glutamyl transferase (GGT) in HepG2 cells. Our results show that P-gp activity was not affected in any case and that only Solanum paniculatum was able to significantly change CYP3A4 mRNA gene expression (twofold decrease, p < 0.05), this being correlated with an antagonist effect upon hPXR (EC50 = 0.38 mg/mL). Total intracellular glutathione levels were significantly depleted by exposure to Solanum paniculatum (-44%, p < 0.001), Lippia sidoides (-12%, p < 0.05) and Cordia verbenacea (-47%, p < 0.001). The latter plant extract was able to decrease GGT activity (-48%, p < 0.01). In conclusion, this preclinical study shows that the administration of some of these herbal medicines may be able to cause disturbances to metabolic mechanisms in vitro. Although Erythrina mulungu appears safe in our tests, active pharmacovigilance is recommended for the other three species, especially in the case of Solanum paniculatum.
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Affiliation(s)
- Andre L D A Mazzari
- Department of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy London, UK
| | - Flora Milton
- Faculdade de Ciências da Saúde, Universidade de Brasília Brasília, Brazil
| | - Samantha Frangos
- Department of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy London, UK
| | - Ana C B Carvalho
- Agência Nacional de Vigilância Sanitária, Coordenação de Medicamentos Fitoterápicos e Dinamizados Brasília, Brazil
| | - Dâmaris Silveira
- Faculdade de Ciências da Saúde, Universidade de Brasília Brasília, Brazil
| | | | - Jose M Prieto
- Department of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy London, UK
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Taha M, Khan I, Coutinho JA. Complexation and molecular modeling studies of europium(III)–gallic acid–amino acid complexes. J Inorg Biochem 2016; 157:25-33. [DOI: 10.1016/j.jinorgbio.2016.01.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 01/06/2016] [Accepted: 01/18/2016] [Indexed: 01/06/2023]
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26
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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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Toxicity and Loss of Mitochondrial Membrane Potential Induced by Alkyl Gallates in Trypanosoma cruzi. INTERNATIONAL SCHOLARLY RESEARCH NOTICES 2015; 2015:924670. [PMID: 27347554 PMCID: PMC4897139 DOI: 10.1155/2015/924670] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 12/18/2014] [Accepted: 12/22/2014] [Indexed: 12/22/2022]
Abstract
American trypanosomiasis or Chagas disease is a debilitating disease representing an important social problem that affects, approximately, 10 million people in the world. The main aggravating factor of this situation is the lack of an effective drug to treat the different stages of this disease. In this context, the search for trypanocidal substances isolated from plants, synthetic or semi synthetic molecules, is an important strategy. Here, the trypanocidal potential of gallates was assayed in epimastigotes forms of T. cruzi and also, the interference of these substances on the mitochondrial membrane potential of the parasites was assessed, allowing the study of the mechanism of action of the gallates in the T. cruzi organisms. Regarding the preliminary structure-activity relationships, the side chain length of gallates plays crucial role for activity. Nonyl, decyl, undecyl, and dodecyl gallates showed potent antitrypanosomal effect (IC50 from 1.46 to 2.90 μM) in contrast with benznidazole (IC50 = 34.0 μM). Heptyl gallate showed a strong synergistic activity with benznidazole, reducing by 105-fold the IC50 of benznidazole. Loss of mitochondrial membrane potential induced by these esters was revealed. Tetradecyl gallate induced a loss of 53% of the mitochondrial membrane potential, at IC50 value.
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Subramanian AP, John AA, Vellayappan MV, Balaji A, Jaganathan SK, Supriyanto E, Yusof M. Gallic acid: prospects and molecular mechanisms of its anticancer activity. RSC Adv 2015. [DOI: 10.1039/c5ra02727f] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Gallic acid (GA) is a phenolic acid found in many dietary substances. It is a natural compound found in gallnuts, sumac, witch-hazel, clove, tealeaves, oak bark, sundew and other plants. Edibles like blackberry, hot chocolate, common walnut and Indian gooseberry contain GA.
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Affiliation(s)
- A. P. Subramanian
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - A. A. John
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - M. V. Vellayappan
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - A. Balaji
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - S. K. Jaganathan
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - Eko Supriyanto
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - Mustafa Yusof
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Bioscience and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
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Badhani B, Sharma N, Kakkar R. Gallic acid: a versatile antioxidant with promising therapeutic and industrial applications. RSC Adv 2015. [DOI: 10.1039/c5ra01911g] [Citation(s) in RCA: 486] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Oxidative stress, a result of an overproduction and accumulation of free radicals, is the leading cause of several degenerative diseases such as cancer, atherosclerosis, cardiovascular diseases, ageing and inflammatory diseases.
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Affiliation(s)
- Bharti Badhani
- Computational Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Neha Sharma
- Computational Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Rita Kakkar
- Computational Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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Liu C, Lin JJ, Yang ZY, Tsai CC, Hsu JL, Wu YJ. Proteomic study reveals a co-occurrence of gallic acid-induced apoptosis and glycolysis in B16F10 melanoma cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11672-11680. [PMID: 25397718 DOI: 10.1021/jf504035s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Gallic acid (GA) has long been associated with a wide range of biological activities. In this study, its antitumor effect against B16F10 melanoma cells was demonstrated by MTT assay, cell migration assay, wound-healing assay, and flow cytometric analysis. GA with a concentration >200 μM shows apoptotic activity toward B16F10 cells. According to Western blotting data, overexpressions of cleaved forms of caspase-9, caspase-3, and PARP-1 and pro-apoptotic Bax and Bad, accompanied by underexpressed anti-apoptotic Bcl-2 and Bcl-xL indicate that GA induces B16F10 cell apoptosis via mitochondrial pathway. The 2-DE based comparative proteomics was further employed in B16F10 cells with and without GA treatment for a large-scale protein expression profiling. A total of 41 differential protein spots were quantified, and their identities were characterized using LC-MS/MS analysis and database matching. In addition to some regulated proteins that were associated with apoptosis, interestingly, some identified proteins involved in glycolysis such as glucokinase, α-enolase, aldolase, pyruvate kinase, and GAPDH were simultaneously up-regulated, which reveals that the GA-induced cellular apoptosis in B16 melanoma cells is associated with metabolic glycolysis.
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Affiliation(s)
- Cheng Liu
- Hyperbaric Oxygen Therapy Center and Division of Plastic Surgery, Chi Mei Medical Center , Tainan 710, Taiwan
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31
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Soares AS, Costa VM, Diniz C, Fresco P. The combination of Cl-IB-MECA with paclitaxel: a new anti-metastatic therapeutic strategy for melanoma. Cancer Chemother Pharmacol 2014; 74:847-60. [PMID: 25119183 DOI: 10.1007/s00280-014-2557-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 07/26/2014] [Indexed: 12/18/2022]
Abstract
PURPOSE Metastatic melanoma is considered one of the most aggressive malignant tumours, representing the deadliest form of skin cancer. Melanoma progression is associated with the abrogation of normal controls that limit cell proliferation, migration, and invasion, eventually leading to metastasis. Based on the variety of cellular mechanisms involved in metastatic progression, we aimed to evaluate the effect of inosine (50 μM) and of the combination of Cl-IB-MECA (10 μM) with paclitaxel (10 ng/mL) on several stages of melanoma progression. METHODS Proliferation, migration, adhesion, invasion, and colony formation assays were performed on human C32 and A375 metastatic melanoma cells. Levels of ERK1/2 were also determined using an ELISA kit. Moreover, mouse aortic rings were treated with vascular endothelial growth factor in order to assess the microvessel sprouting (an indicator of angiogenesis) in the presence of the referred compounds. RESULTS We demonstrate that inosine induced, through A3 adenosine receptor activation, proliferation, migration, adhesion, and invasion on C32 and A375 melanoma cells, although with dissimilar importance on the two melanoma cell lines. Inosine also increased colony formation on A375 cells. Levels of ERK1/2 were increased after inosine exposure and that increase was dependent on A3 adenosine receptor activation in both cell lines. Moreover, microvessel sprouting stimulated by inosine was decreased by the combination of Cl-IB-MECA with paclitaxel. CONCLUSIONS Cl-IB-MECA combined with paclitaxel was able to impair almost all of the referred metastatic related mechanisms induced by inosine, making this approach a valuable tool for combinatory therapy against metastatic melanoma.
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Affiliation(s)
- Ana S Soares
- REQUIMTE/Laboratório de Farmacologia, Departamento de Ciências do Medicamento, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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Gallic acid inhibits migration and invasion of SCC-4 human oral cancer cells through actions of NF-κB, Ras and matrix metalloproteinase-2 and -9. Oncol Rep 2014; 32:355-61. [DOI: 10.3892/or.2014.3209] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 04/29/2014] [Indexed: 11/05/2022] Open
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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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Phytoagents for cancer management: regulation of nucleic acid oxidation, ROS, and related mechanisms. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:925804. [PMID: 24454991 PMCID: PMC3886269 DOI: 10.1155/2013/925804] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 09/27/2013] [Accepted: 10/05/2013] [Indexed: 12/28/2022]
Abstract
Accumulation of oxidized nucleic acids causes genomic instability leading to senescence, apoptosis, and tumorigenesis. Phytoagents are known to reduce the risk of cancer development; whether such effects are through regulating the extent of nucleic acid oxidation remains unclear. Here, we outlined the role of reactive oxygen species in nucleic acid oxidation as a driving force in cancer progression. The consequential relationship between genome instability and cancer progression highlights the importance of modulation of cellular redox level in cancer management. Current epidemiological and experimental evidence demonstrate the effects and modes of action of phytoagents in nucleic acid oxidation and provide rationales for the use of phytoagents as chemopreventive or therapeutic agents. Vitamins and various phytoagents antagonize carcinogen-triggered oxidative stress by scavenging free radicals and/or activating endogenous defence systems such as Nrf2-regulated antioxidant genes or pathways. Moreover, metal ion chelation by phytoagents helps to attenuate oxidative DNA damage caused by transition metal ions. Besides, the prooxidant effects of some phytoagents pose selective cytotoxicity on cancer cells and shed light on a new strategy of cancer therapy. The “double-edged sword” role of phytoagents as redox regulators in nucleic acid oxidation and their possible roles in cancer prevention or therapy are discussed in this review.
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Li WD, Wu Y, Zhang L, Yan LG, Yin FZ, Ruan JS, Chen ZP, Yang GM, Yan CP, Zhao D, Lu Y, Cai BC. Characterization of xanthatin: anticancer properties and mechanisms of inhibited murine melanoma in vitro and in vivo. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2013; 20:865-873. [PMID: 23664560 DOI: 10.1016/j.phymed.2013.03.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 02/06/2013] [Accepted: 03/09/2013] [Indexed: 06/02/2023]
Abstract
Anti-cancer investigations on Xanthatin mainly focus on in vitro experiments. We herein reported the anti-tumor effects of Xanthatin both in vitro and in vivo. MTS assay results showed that Xanthatin had a remarkable anti-proliferative effect on B16-F10 cells. Moreover, the expression of β-catenin was up-regulated both in vitro and in vivo. Animal studies further revealed that Xanthatin killed the tumor cells around the blood vessels which contributes to reduce microvascular density extremely. All these results indicate that Xanthatin inhibited murine melanoma B16-F10 cell proliferation possibly associated with activation of Wnt/β-catenin pathway and its activity against melanoma tumor might also be relevant to inhibition of angiogenesis.
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Affiliation(s)
- Wei D Li
- Nanjing University of Chinese Medicine, Nanjing 210046, China
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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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Zucker SN, Zirnheld J, Bagati A, DiSanto TM, Des Soye B, Wawrzyniak JA, Etemadi K, Nikiforov M, Berezney R. Preferential induction of apoptotic cell death in melanoma cells as compared with normal keratinocytes using a non-thermal plasma torch. Cancer Biol Ther 2012; 13:1299-306. [PMID: 22895073 DOI: 10.4161/cbt.21787] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Selective induction of apoptosis in melanoma cells is optimal for therapeutic development. To achieve this goal, a non-thermal helium plasma torch was modified for use on cultured cells in a temperature-controlled environment. Melanoma cells were targeted with this torch (1) in parallel cultures with keratinocytes, (2) in co-culture with keratinocytes and (3) in a soft agar matrix. Melanoma cells displayed high sensitivity to reactive oxygen species generated by the torch and showed a 6-fold increase in cell death compared with keratinocytes. The extent of cell death was compared between melanoma cells and normal human keratinocytes in both short-term (5 min) co-culture experiments and longer assessments of apoptotic cell death (18-24 h). Following a 10 sec plasma exposure there was a 4.9-fold increase in the cell death of melanoma vs. keratinocytes as measured after 24 h at the target site of the plasma beam. When the treatment time was increased to 30 sec, a 98% cell death was reported for melanoma cells, which was 6-fold greater than the extent of cell death in keratinocytes. Our observations further indicate that this preferential cell death is largely due to apoptosis.. In addition, we report that this non-thermal plasma torch kills melanoma cells growing in soft agar, suggesting that the plasma torch is capable of inducing melanoma cell death in 3D settings. We demonstrate that the presence of gap junctions may increase the area of cell death, likely due to the "bystander effect" of passing apoptotic signals between cells. Our findings provide a basis for further development of this non-invasive plasma torch as a potential treatment for melanoma.
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Affiliation(s)
- Shoshanna N Zucker
- Department of Biological Sciences, University at Buffalo, Buffalo, NY, USA.
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38
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Octyl and dodecyl gallates induce oxidative stress and apoptosis in a melanoma cell line. Toxicol In Vitro 2011; 25:2025-34. [DOI: 10.1016/j.tiv.2011.08.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 08/02/2011] [Accepted: 08/04/2011] [Indexed: 12/29/2022]
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Mendes L, de Freitas V, Baptista P, Carvalho M. Comparative antihemolytic and radical scavenging activities of strawberry tree (Arbutus unedo L.) leaf and fruit. Food Chem Toxicol 2011; 49:2285-91. [DOI: 10.1016/j.fct.2011.06.028] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 06/04/2011] [Accepted: 06/04/2011] [Indexed: 01/15/2023]
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40
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Hung CF, Hsu BY, Chang SC, Chen BH. Antiproliferation of melanoma cells by polysaccharide isolated from Zizyphus jujuba. Nutrition 2011; 28:98-105. [PMID: 21820868 DOI: 10.1016/j.nut.2011.05.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 04/14/2011] [Accepted: 05/12/2011] [Indexed: 01/21/2023]
Abstract
OBJECTIVE Zizyphus jujuba, a traditional Chinese herb rich in functional components such as polysaccharide, has been widely consumed in Asian countries. The objective of this study was to determine the antiproliferation effect of melanoma cells as affected by deproteinized polysaccharide (DPP) isolated from Z. jujuba. METHODS Deproteinized polysaccharide was obtained through boiling water extraction, ethanol precipitation, deproteinization, and dialysis, and the molecular weight of DPP was determined by high-performance gel-filtration chromatography. Melanoma cell viability was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, the cell cycle was analyzed by flow cytometry, the formation of apoptotic bodies was observed under a fluorescence microscope at 450 nm, and caspase-3 and caspase-9 were measured by an assay kit. RESULTS Deproteinized polysaccharide was composed of two fractions with average molecular weights of 143 108 and 67 633 Da. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide test showed that the antiproliferation effect of DPP on melanoma cells followed a dose- and time-dependent course. The 50% inhibitory concentration of DPP in inhibiting melanoma cell growth was 3.99 ± 0.10 mg/mL after 24-h treatment but decreased significantly to 3.36 ± 0.14 mg/mL after 48 h. The cell cycle assay revealed melanoma cells to be arrested in G2/M phase. Moreover, with DPP treatment, the apoptotic bodies were generated, accompanied by an increase in caspase-3 and caspase-9 activity. CONCLUSIONS This outcome suggested that DPP may be used as a potential anti-skin cancer agent for further in vivo and clinical trial experiments.
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Affiliation(s)
- Chi-Feng Hung
- School of Medicine, Fu Jen University, Taipei, Taiwan
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41
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Gallic acid indanone and mangiferin xanthone are strong determinants of immunosuppressive anti-tumour effects of Mangifera indica L. bark in MDA-MB231 breast cancer cells. Cancer Lett 2011; 305:21-31. [DOI: 10.1016/j.canlet.2011.02.011] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 02/12/2011] [Accepted: 02/15/2011] [Indexed: 11/18/2022]
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Ooi KL, Muhammad TST, Tan ML, Sulaiman SF. Cytotoxic, apoptotic and anti-α-glucosidase activities of 3,4-di-O-caffeoyl quinic acid, an antioxidant isolated from the polyphenolic-rich extract of Elephantopus mollis Kunth. JOURNAL OF ETHNOPHARMACOLOGY 2011; 135:685-695. [PMID: 21497647 DOI: 10.1016/j.jep.2011.04.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 03/11/2011] [Accepted: 04/01/2011] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The decoction of the whole plant of Elephantopus mollis Kunth. is traditionally consumed to treat various free radical-mediated diseases including cancer and diabetes. AIM OF THE STUDY This study was initiated to determine whether the most effective antioxidant compound isolated from the whole plant of Elephantopus mollis can also contribute to its claimed traditional values as anticancer and antidiabetes agents. MATERIALS AND METHODS An active antiradical phenolic compound (3,4-di-O-caffeoyl quinic acid) was isolated from the methanol extract (with the highest in polyphenolic content) and their antioxidant activities were compared using four different assays, that are DPPH, FRAP, metal chelating, and β-carotene bleaching tests. The compound was also evaluated for its cytotoxic activity, apoptotic induction and anti-glucosidase efficacies using methylene blue, DeadEnd™ assay and α-glucosidase assays, respectively. RESULTS The compound acted as a greater primary antioxidant than its methanol extract, by having higher ferric reducing activity (EC(50) 2.18±0.05 μg/ml), β-carotene bleaching activity (EC(50) 23.85±0.65 μg/ml) and DPPH scavenging activity (EC(50) 68.91±5.44μg/ml), whereas the methanol extract exhibited higher secondary antioxidant activity as a metal chelator with lower EC(50) value (49.39±3.68 μg/ml) than the compound. Cytotoxicity screening of this compound exhibited a remarkable dose-dependent inhibitory effect on NCI-H23 (human lung adenocarcinoma) cell lines (EC(50) 3.26±0.35 μg/ml) and was found to be apoptotic in nature based on a clear indication of DNA fragmentation. This compound also displayed a concentration-dependent α-glucosidase inhibition with EC(50) 241.80±14.29 μg/ml. CONCLUSIONS The findings indicate the major role of 3,4-di-O-caffeoyl quinic acid to antioxidant capacities of Elephantopus mollis extracts. The compound also exerted apoptosis-mediated cytotoxicity and α-glucosidase inhibitory effects and is thus a promising non toxic agent in treating cancer and type 2 diabetes mellitus.
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Affiliation(s)
- Kheng Leong Ooi
- School of Biological Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
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Ou TT, Wu CH, Hsu JD, Chyau CC, Lee HJ, Wang CJ. Paeonia lactiflora Pall inhibits bladder cancer growth involving phosphorylation of Chk2 in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2011; 135:162-172. [PMID: 21396995 DOI: 10.1016/j.jep.2011.03.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/24/2011] [Accepted: 03/03/2011] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Extracts of Paeonia lactiflora Pall (RPA), a traditional Chinese medicines has been shown to treat cancers. AIM OF THE STUDY The purpose of this study is to evaluate the anticancer effect of RPA in urinary bladder carcinoma in vitro and in vivo. MATERIALS AND METHODS The cell viability was analyzed with DAPI. Flow cytometry and Western blot were used to study the apoptosis and cell cycle related mechanism. A rat model of bladder cancer was induced by N-butyl-N-(4-hydroxybutyl) nitrosamine (OH-BBN). Tumors were analyzed with immunohistochemical analysis. RESULTS Our data suggested that RPA inhibits growth of bladder cancer via induction of apoptosis and cell cycle arrest. Treatment of TSGH-8301 cells with RPA resulted in G2-M phase arrest that was associated with a marked decline in protein levels of cdc2, cyclin B1, cell division cycle 25B (Cdc25B) and Cdc25C. We also reported that RPA-mediated growth inhibition of TSGH-8301 cells was correlated with activation of checkpoint kinase 2 (Chk2). Herein, we further evaluated urinary bladder cancer using a model of bladder cancer induced by OH-BBN. Analysis of tumors from RPA-treated rats showed significant decrease in the expression of Bcl2, cyclin D1, and PCNA, and increase in the expression of p-Chk2 (Thr-68), Bax, and Cip1/p21. CONCLUSION Our data provide the experimental evidence that RPA could modulate apoptosis in models of bladder cancer.
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Affiliation(s)
- Ting-Tsz Ou
- Institute of Biochemistry and Biotechnology, College of Medicine, Chung Shan Medical University, Taichung, Taiwan
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Antimetastatic activity and low systemic toxicity of tetradecyl gallate in a preclinical melanoma mouse model. Invest New Drugs 2011; 30:870-9. [DOI: 10.1007/s10637-010-9628-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 12/27/2010] [Indexed: 01/08/2023]
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45
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Ou TT, Wang CJ, Lee YS, Wu CH, Lee HJ. Gallic acid induces G2/M phase cell cycle arrest via
regulating 14-3-3β release from Cdc25C and Chk2 activation in human bladder transitional carcinoma cells. Mol Nutr Food Res 2010; 54:1781-90. [DOI: 10.1002/mnfr.201000096] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Anticancer properties of 10-hydroxycamptothecin in a murine melanoma pulmonary metastasis model in vitro and in vivo. Toxicol In Vitro 2010; 25:513-20. [PMID: 21093576 DOI: 10.1016/j.tiv.2010.11.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 10/26/2010] [Accepted: 11/12/2010] [Indexed: 01/13/2023]
Abstract
Lung cancer, including lung metastatic cancer, remains one of the most difficult types of cancer to treat. Therefore, the search for new agents for its treatment is very important. 10-Hydroxycamptothecin (HCPT) was proved to have ideal anticancer activity in curing series cancer cells. In this study, the anticancer effect of HCPT on melanoma lung metastasis cancer was investigated by several administration routes, and whether the effect may be attributed to the induction of tumor cells apoptosis was determined. MTT assay results showed that HCPT exhibited selective cytotoxic activity against B16-F10 cells in a concentration- and time-dependent manner. Hoechst 33258 staining and transmission electron microscopy showed typical apoptotic morphology such as condensed chromatin, irregular nuclei, and apoptotic body formation. Flow cytometry analysis indicated a growth on apoptotic cells and a cell-cycle arrest in S phase after treatment with HCPT. In vivo melanoma pulmonary metastases were inhibited by treatment with HCPT. A more significant inhibition was observed if HCPT was administered by aerosol inhalation than that given by i.v. or i.p. administration. Thus, HCPT exhibited potential anticancer activity against B16-F10 cells in vitro and in vivo. However, the possible mechanisms involved still need to be investigated to explain this behavior.
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Ximenes VF, Lopes MG, Petrônio MS, Regasini LO, Silva DHS, da Fonseca LM. Inhibitory effect of gallic acid and its esters on 2,2'-azobis(2-amidinopropane)hydrochloride (AAPH)-induced hemolysis and depletion of intracellular glutathione in erythrocytes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:5355-5362. [PMID: 20397726 DOI: 10.1021/jf100233y] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The protective effect of gallic acid and its esters, methyl, propyl, and lauryl gallate, against 2,2'-azobis(2-amidinopropane)hydrochloride (AAPH)-induced hemolysis and depletion of intracellular glutathione (GSH) in erythrocytes was studied. The inhibition of hemolysis was dose-dependent, and the esters were significantly more effective than gallic acid. Gallic acid and its esters were compared with regard to their reactivity to free radicals, using the DPPH and AAPH/pyranine free-cell assays, and no significant difference was obtained. Gallic acid and its esters not only failed to inhibit the depletion of intracellular GSH in erythrocytes induced by AAPH but exacerbated it. Similarly, the oxidation of GSH by AAPH or horseradish peroxidase/H(2)O(2) in cell-free systems was exacerbated by gallic acid or gallates. This property could be involved in the recent findings on pro-apoptotic and pro-oxidant activities of gallates in tumor cells. We provide evidence that lipophilicity and not only radical scavenger potency is an important factor regarding the efficiency of antihemolytic substances.
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Affiliation(s)
- Valdecir F Ximenes
- Departamento de Química, Faculdade de Ciências, Unesp-University Estadual Paulista, Bauru, São Paulo (SP), Brazil.
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