51
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Kazantzis KT, Koutsonikoli K, Mavroidi B, Zachariadis M, Alexiou P, Pelecanou M, Politopoulos K, Alexandratou E, Sagnou M. Curcumin derivatives as photosensitizers in photodynamic therapy: photophysical properties and in vitro studies with prostate cancer cells. Photochem Photobiol Sci 2020; 19:193-206. [PMID: 31956888 DOI: 10.1039/c9pp00375d] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photodynamic therapy (PDT) is a minimally invasive approach to treat various forms of cancer, based on the ability of certain non-toxic molecules (photosensitizers) to generate reactive oxygen species (ROS) after excitation by light of a certain wavelength and eventually induce strong phototoxic reactions against malignant cells and other pathogens. Curcumin is one of the most extensively investigated phytochemicals with a wide range of therapeutic properties and has been shown to induce strong photocytotoxic effects in micromolar concentrations against a variety of cancer cell lines. Curcumin (1) is comparatively evaluated with the naturally occurring bisdemethoxy Curcumin (2), which lacks the two methoxy groups, as well as two newly synthesized curcuminoids, the cinnamaldehyde derivative (3) and the dimethylamino one (4), designed to increase the absorption maximum and hence the tissue penetration. The synthetic curcuminoids were successfully synthesized in sufficient amounts and their photophysical properties such as absorption, fluorescence, photobleaching and free radical generation were investigated. Compound 4 exhibited a significant increase in peak absorption (497 nm) and strong fluorescent emission signals were recorded for all curcuminoids. Photobleaching of 4 was comparable to 1 whereas 2 and 3 showed more extended photobleaching but much higher ROS production in very short irradiation times. Compounds 2 and 4 exhibited specific intracellular localization. After dark and light cytotoxicity experiments against LNCaP prostate cancer cell line for all curcuminoids, concentration of 3 μM and irradiance of 6 mW cm-2 were selected for the PDT application which resulted in remarkable results with very short LD50. Curcuminoids 2 and 4 exhibited a significant dose-dependent PDT effect. The biphasic dose-response photodynamic effect observed for 1 and 3 may provide a strategy against prolonged and sustained photosensitivity.
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Affiliation(s)
- K T Kazantzis
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - K Koutsonikoli
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - B Mavroidi
- Laboratories of Structural Studies of Biomolecules and Pharmaceuticals with NMR, Institute of Biosciences and Applications, NCSR "Demokritos", Ag. Paraskevi, 153 10, Athens, Greece.
| | - M Zachariadis
- Bioimaging and Cell analysis, Material and Chemical Characterisation Facility, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - P Alexiou
- Laboratories of Structural Studies of Biomolecules and Pharmaceuticals with NMR, Institute of Biosciences and Applications, NCSR "Demokritos", Ag. Paraskevi, 153 10, Athens, Greece.
| | - M Pelecanou
- Laboratories of Structural Studies of Biomolecules and Pharmaceuticals with NMR, Institute of Biosciences and Applications, NCSR "Demokritos", Ag. Paraskevi, 153 10, Athens, Greece.
| | - K Politopoulos
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - E Alexandratou
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - M Sagnou
- Laboratories of Structural Studies of Biomolecules and Pharmaceuticals with NMR, Institute of Biosciences and Applications, NCSR "Demokritos", Ag. Paraskevi, 153 10, Athens, Greece.
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Effects of Plant and Animal Natural Products on Mitophagy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6969402. [PMID: 32308807 PMCID: PMC7086453 DOI: 10.1155/2020/6969402] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 02/11/2020] [Accepted: 02/22/2020] [Indexed: 01/07/2023]
Abstract
Mitophagy is a protected cellular process that is essential for autophagic removal of damaged mitochondria and for preservation of a healthy mitochondrial population. In the last years, a particular interest has been devoted in studying the effects of natural compounds on mitophagy. Different natural compounds may modulate mitochondrial oxidative phosphorylation, the production of mitochondrial reactive oxygen species, the expression of mitophagy- and autophagy-related genes, and the activities of transcription factors which regulate the expression of mitochondrial proteins, thereby controlling mitochondrial damage and mitophagy. Remarkably, since mitochondrial function has a crucial role in the pathogenesis of various diseases (e.g., cancer, atherosclerosis, Duchenne muscular dystrophy, diabetes complications, Alzheimer's disease, and hepatic steatosis), these effects might have important therapeutic implications. In this review, preclinical studies investigating the role of different natural compounds in the modulation of mitophagy will be discussed.
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53
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Jaiswal VD, Dongre P. Biophysical interactions between silver nanoparticle-albumin interface and curcumin. J Pharm Anal 2020; 10:164-177. [PMID: 32373388 PMCID: PMC7193065 DOI: 10.1016/j.jpha.2020.02.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 02/07/2020] [Accepted: 02/13/2020] [Indexed: 12/16/2022] Open
Abstract
Active targeted drug delivery methods facilitate effective uptake of functionalized nanoparticles through receptor-mediated transcytosis. In recent years, albumin-nanoparticle interaction has been critically examined so that this functionalized nanoparticle can be efficiently loaded with drugs. The present investigation aims at understanding the adsorption of Bovine Serum Albumin (BSA) on Silver Nanoparticle (SNP) surface, preparation of soft conjugates (SC) and hard conjugates (HC) of BSA-functionalized SNP (SNP-BSA), and their interaction with curcumin (CUR). HC contains tightly bound BSA whereas SC involves tightly and loosely bound BSA. Increase in the hydrodynamic radii of conjugates was observed upon SNP incubation with increased concentration of BSA. Three different SNP-BSA conjugate ratios were selected to study their interaction with CUR. Fluorescence spectroscopy showed a strong association between CUR and SNP:BSA conjugates. However, binding varied with a change in the conjugate ratio. Circular Dichroism (CD)/Fourier Transform Infrared (FTIR) spectroscopy revealed the alterations in the secondary structure of BSA upon CUR binding to the conjugates. Zeta potential data indicated stable conjugate formation. CUR in SNP:BSA conjugate was found to have a higher half-life as compared to the control. We believe that this is the first biophysical characterization report of conjugates that can be effectively extrapolated for targeted drug delivery. Soft Conjugates (SC) and Hard conjugates (HC) of Bovine Serum Albumin (BSA) and Silver nanoparticles (SNP) were prepared and interaction with anticancer drug CUR was explored. Binding number and adsorption capacity of drug was identified. Conformational and microenvironment changes in adsorbed BSA upon SNP and CUR interaction were investigated. Best possible conjugates were identified for efficient loading of CUR drug. Drug designed can be further studied for its interaction with glycoprotein receptor present on the diseased (cancerous) cell.
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54
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Highlighting Curcumin-Induced Crosstalk between Autophagy and Apoptosis as Supported by Its Specific Subcellular Localization. Cells 2020; 9:cells9020361. [PMID: 32033136 PMCID: PMC7072416 DOI: 10.3390/cells9020361] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 12/31/2022] Open
Abstract
Curcumin, a major active component of turmeric (Curcuma longa, L.), is known to have various effects on both healthy and cancerous tissues. In vitro studies suggest that curcumin inhibits cancer cell growth by activating apoptosis, but the mechanism underlying the anticancer effect of curcumin is still unclear. Since there is a recent consensus about endoplasmic reticulum (ER) stress being involved in the cytotoxicity of natural compounds, we have investigated using Image flow cytometry the mechanistic aspects of curcumin's destabilization of the ER, but also the status of the lysosomal compartment. Curcumin induces ER stress, thereby causing an unfolded protein response and calcium release, which destabilizes the mitochondrial compartment and induce apoptosis. These events are also associated with secondary lysosomal membrane permeabilization that occurs later together with an activation of caspase-8, mediated by cathepsins and calpains that ended in the disruption of mitochondrial homeostasis. These two pathways of different intensities and momentum converge towards an amplification of cell death. In the present study, curcumin-induced autophagy failed to rescue all cells that underwent type II cell death following initial autophagic processes. However, a small number of cells were rescued (successful autophagy) to give rise to a novel proliferation phase.
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55
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Iron chelation by curcumin suppresses both curcumin-induced autophagy and cell death together with iron overload neoplastic transformation. Cell Death Discov 2019; 5:150. [PMID: 31839992 PMCID: PMC6901436 DOI: 10.1038/s41420-019-0234-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/24/2019] [Accepted: 11/11/2019] [Indexed: 12/13/2022] Open
Abstract
Iron overload, notably caused by hereditary hemochromatosis, is an excess storage of iron in various organs that causes tissue damage and may promote tumorigenesis. To manage that disorder, free iron depletion can be induced by iron chelators like deferoxamine that are of increasing interest also in the cancer field since iron stock could be a potent target for managing tumorigenesis. Curcumin, a well-known active substance extracted from the turmeric rhizome, destabilizes endoplasmic reticulum, and secondarily lysosomes, thereby increasing mitophagy/autophagy and subsequent apoptosis. Recent findings show that cells treated with curcumin also exhibit a decrease in ferritin, which is consistent with its chemical structure and iron chelating activity. Here we investigated how curcumin influences the intracellular effects of iron overload via Fe-nitriloacetic acid or ferric ammonium citrate loading in Huh-7 cells and explored the consequences in terms of antioxidant activity, autophagy, and apoptotic signal transduction. In experiments with T51B and RL-34 epithelial cells, we have found evidence that curcumin-iron complexation abolishes both curcumin-induced autophagy and apoptosis, together with the tumorigenic action of iron overload.
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56
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Chang JC, Hu WF, Lee WS, Lin JH, Ting PC, Chang HR, Shieh KR, Chen TI, Yang KT. Intermittent Hypoxia Induces Autophagy to Protect Cardiomyocytes From Endoplasmic Reticulum Stress and Apoptosis. Front Physiol 2019; 10:995. [PMID: 31447690 PMCID: PMC6692635 DOI: 10.3389/fphys.2019.00995] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 07/18/2019] [Indexed: 12/25/2022] Open
Abstract
Intermittent hypoxia (IH), characterized as cyclic episodes of short-period hypoxia followed by normoxia, occurs in many physiological and pathophysiological conditions such as pregnancy, athlete, obstructive sleep apnea, and asthma. Hypoxia can induce autophagy, which is activated in response to protein aggregates, in the proteotoxic forms of cardiac diseases. Previous studies suggested that autophagy can protect cells by avoiding accumulation of misfolded proteins, which can be generated in response to ischemia/reperfusion (I/R) injury. The objective of the present study was to determine whether IH-induced autophagy can attenuate endoplasmic reticulum (ER) stress and cell death. In this study, H9c2 cell line, rat primary cultured cardiomyocytes, and C57BL/6 male mice underwent IH with an oscillating O2 concentration between 4 and 20% every 30 min for 1-4 days in an incubator. The levels of LC3, an autophagy indicator protein and CHOP and GRP78 (ER stress-related proteins) were measured by Western blotting analyses. Our data demonstrated that the autophagy-related proteins were upregulated in days 1-3, while the ER stress-related proteins were downregulated on the second day after IH. Treatment with H2O2 (100 μM) for 24 h caused ER stress and increased the level of ER stress-related proteins, and these effects were abolished by pre-treatment with IH condition. In response to the autophagy inhibitor, the level of ER stress-related proteins was upregulated again. Taken together, our data suggested that IH could increase myocardial autophagy as an adaptive response to prevent the ER stress and apoptosis.
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Affiliation(s)
- Jui-Chih Chang
- Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Wei-Fen Hu
- Master Program in Medical Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Wen-Sen Lee
- Graduate Institute of Medical Sciences, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jian-Hong Lin
- PhD Program in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Pei-Ching Ting
- Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Huai-Ren Chang
- School of Medicine, Tzu Chi University, Hualien, Taiwan.,Division of Cardiology, Department of Internal Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Kun-Ruey Shieh
- School of Medicine, Tzu Chi University, Hualien, Taiwan.,Master Program in Medical Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan.,Department of Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Tsung-I Chen
- Center for Physical Education, College of Education and Communication, Tzu Chi University, Hualien, Taiwan.,Institute of Education, College of Education and Communication, Tzu Chi University, Hualien, Taiwan
| | - Kun-Ta Yang
- Master Program in Medical Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan.,Department of Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan
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57
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Shakeri A, Zirak MR, Wallace Hayes A, Reiter R, Karimi G. Curcumin and its analogues protect from endoplasmic reticulum stress: Mechanisms and pathways. Pharmacol Res 2019; 146:104335. [DOI: 10.1016/j.phrs.2019.104335] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 02/07/2023]
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58
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Cozzolino M, Delcanale P, Montali C, Tognolini M, Giorgio C, Corrado M, Cavanna L, Bianchini P, Diaspro A, Abbruzzetti S, Viappiani C. Enhanced photosensitizing properties of protein bound curcumin. Life Sci 2019; 233:116710. [PMID: 31369762 DOI: 10.1016/j.lfs.2019.116710] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/18/2019] [Accepted: 07/29/2019] [Indexed: 01/09/2023]
Abstract
AIMS The naturally occurring compound curcumin has been proposed for a number of pharmacological applications. In spite of the promising chemotherapeutic properties of the molecule, the use of curcumin has been largely limited by its chemical instability in water. In this work, we propose the use of water soluble proteins to overcome this issue in perspective applications to photodynamic therapy of tumors. MATERIALS AND METHODS Curcumin was bound to bovine serum albumin and its photophysical properties was studied as well as its effect on cell viability after light exposure through MTT assay and confocal imaging. KEY FINDINGS Bovine serum albumin binds curcumin with moderate affinity and solubilizes the hydrophobic compound preserving its photophysical properties for several hours. Cell viability assays demonstrate that when bound to serum albumin, curcumin is an effective photosensitizer for HeLa cells, with better performance than curcumin alone. Confocal fluorescence imaging reveals that when curcumin is delivered alone, it preferentially associates with mitochondria, whereas curcumin bound to bovine serum albumin is found in additional locations within the cell, a fact that may be related to the higher phototoxicity observed in this case. SIGNIFICANCE The higher bioavailability of the photosensitizing compound curcumin when bound to serum albumin may be exploited to increase the efficiency of the drug in photodynamic therapy of tumors.
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Affiliation(s)
- Marco Cozzolino
- Nanoscopy, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Nikon Imaging Center, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Department of Physics, University of Genoa, via Dodecaneso 33, Genoa 16146, Italy
| | - Pietro Delcanale
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Chiara Montali
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco area delle Scienze 7/A, 43124 Parma, Italy
| | - Massimiliano Tognolini
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università di Parma, Parco area delle Scienze 27/A, 43124 Parma, Italy.
| | - Carmine Giorgio
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università di Parma, Parco area delle Scienze 27/A, 43124 Parma, Italy
| | - Miriam Corrado
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università di Parma, Parco area delle Scienze 27/A, 43124 Parma, Italy
| | - Luigi Cavanna
- Dipartimento di Oncologia-ematologia, Azienda USL di Piacenza, Via Taverna, 49, 29121 Piacenza, Italy
| | - Paolo Bianchini
- Nanoscopy, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Nikon Imaging Center, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy
| | - Alberto Diaspro
- Nanoscopy, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Nikon Imaging Center, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Department of Physics, University of Genoa, via Dodecaneso 33, Genoa 16146, Italy
| | - Stefania Abbruzzetti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco area delle Scienze 7/A, 43124 Parma, Italy.
| | - Cristiano Viappiani
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco area delle Scienze 7/A, 43124 Parma, Italy
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Grabner S, Modec B. Zn(II) Curcuminate Complexes with 2,2'-bipyridine and Carboxylates. Molecules 2019; 24:E2540. [PMID: 31336808 PMCID: PMC6680645 DOI: 10.3390/molecules24142540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/09/2019] [Accepted: 07/09/2019] [Indexed: 01/08/2023] Open
Abstract
Two novel zinc(II) compounds with curcuminate (abbreviated as cur-), [Zn(CH3COO)(cur)(bpy)](1)·CH3OH·2H2O (bpy = 2,2'-bipyridine) and [Zn(PhCOO)(cur)(bpy)] (2)·CH3OH, have been synthesized and characterized. Their composition has been determined by single-crystal X-ray structure analysis. Complexes 1 and 2 are similar: in both a five-fold coordination environment of zinc(II) consists of a monodentate carboxylate, a chelating bidentate 2,2'-bipyridine, and curcuminate, which is bound via a deprotonated 1,3-dione moiety. In 1, 2,2'-bipyridine nitrogen atoms and curcuminate oxygen atoms form the base of a square pyramid, whereas the acetate oxygen occupies its apex. The O3N2 donor set in 2 defines a polyhedron which more closely resembles a trigonal bipyramid. The packing in the crystal lattices of both compounds is governed by hydrogen-bonds. Complexes 1 and 2 display higher stability than curcumin in buffered media at pH = 7.0, however, the degradation of coordinated cur- is comparable to that of yellow pigment curcumin (curH) when the pH is raised to 7.2. Both complexes 1 and 2 in DMSO exhibit fluorescence with Stokes shifts of 5367 and 4634 cm-1, respectively.
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Affiliation(s)
- Sabina Grabner
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia.
| | - Barbara Modec
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia.
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Yavarpour-Bali H, Ghasemi-Kasman M, Pirzadeh M. Curcumin-loaded nanoparticles: a novel therapeutic strategy in treatment of central nervous system disorders. Int J Nanomedicine 2019; 14:4449-4460. [PMID: 31417253 PMCID: PMC6592058 DOI: 10.2147/ijn.s208332] [Citation(s) in RCA: 152] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 05/15/2019] [Indexed: 12/14/2022] Open
Abstract
Curcumin as a hydrophobic polyphenol is extracted from the rhizome of Curcuma longa. Curcumin is widely used as a dietary spice and a topical medication for the treatment of inflammatory disorders in Asia. This compound also possesses remarkable anti-inflammatory and neuroprotective effects with the ability to pass from the blood brain barrier. Based on several pharmacological activities of curcumin, it has been introduced as an ideal candidate for different neurological disorders. Despite the pleiotropic activities of curcumin, poor solubility, rapid clearance and low stability have limited its clinical application. In recent years, nano-based drug delivery system has effectively improved the aqueous solubility and bioavailability of curcumin. In this review article, the effects of curcumin nanoparticles and their possible mechanism/s of action has been elucidated in various central nervous system (CNS)-related diseases including Parkinson's disease, Huntington disease, Alzheimer's disease, Multiple sclerosis, epilepsy and Amyotrophic Lateral Sclerosis. Furthermore, recent evidences about administration of nano-curcumin in the clinical trial phase have been described in the present review article.
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Affiliation(s)
| | - Maryam Ghasemi-Kasman
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
- Neuroscience Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Marzieh Pirzadeh
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran
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Dubey D, Srivastav AK, Singh J, Chopra D, Qureshi S, Kushwaha HN, Singh N, Ray RS. Photoexcited triclosan induced DNA damage and oxidative stress via p38 MAP kinase signaling involving type I radicals under sunlight/UVB exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:270-282. [PMID: 30844667 DOI: 10.1016/j.ecoenv.2019.02.065] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/14/2019] [Accepted: 02/20/2019] [Indexed: 06/09/2023]
Abstract
Triclosan (TCS) is an antimicrobial preservative used in personal care products. Here, we have studied the phototoxicity, photogenotoxicity of TCS and its molecular mechanism involving p38 mitogen activated protein kinase (MAPK) pathway under UVB/sunlight exposure. We found that TCS showed photodegradation and photoproducts formation under UVB/sunlight. In silico study suggests that photosensitized TCS loses its preservative property due to the formation of its photoproducts. Photosensitized TCS induces significant O2•-, •OH generation and lipid peroxidation via type-I photochemical reaction mechanism under UVB/sunlight exposure. We performed intracellular study of TCS on human skin keratinocytes (HaCaT cell-line) under the ambient intensity of UVB (0.6 mW/cm2) and sunlight exposure. Significant intracellular ROS generation was observed through DCFH2-DA/DHE assays along with a significant reduction in cell viability through MTT and NRU assays in photosensitized TCS. Photosensitized TCS also induces endoplasmic reticulum (ER) stress as shown through ER-tracker/DAPI staining and Ca2+ release. It further induced cell cycle arrest through the sub-G1 phase augmentation and caused lysosomal/mitochondrial destabilization. Photogenotoxicity was shown through significant tail DNA, micronuclei and cyclobutane pyrimidine dimers (CPDs) formations. Cell signaling mechanism implicated upregulated expression of cleaved Caspase-3, Bax, phospho-p38, phospho-JNK and cytochrome C, thereby downregulated Bcl-2 expressions. Results advocate that TCS induces phototoxic effects via type I mediated photodynamic mechanism and activation of MAPK pathway. We conclude that photoexcited TCS may be deleterious to human health at the ambient environmental intensities of sunlight reaching at the earth's surface. Therefore, it may be replaced by alternative safe preservative.
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Affiliation(s)
- Divya Dubey
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; School of Dental Sciences, Department of Biochemistry, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow 226028, Uttar Pradesh, India
| | - Ajeet K Srivastav
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; School of Dental Sciences, Department of Biochemistry, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow 226028, Uttar Pradesh, India; Aryan Essentials Private Limited (Brand Name-Wikka), Mahatma Gandhi Road, Ghitorni, New Delhi 110030, India
| | - Jyoti Singh
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Deepti Chopra
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; School of Dental Sciences, Department of Biochemistry, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow 226028, Uttar Pradesh, India
| | - Saba Qureshi
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Hari Narayan Kushwaha
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Nivedita Singh
- Department of Bioinformatics, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Ratan Singh Ray
- Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.
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Huang BR, Tsai CH, Chen CC, Way TD, Kao JY, Liu YS, Lin HY, Lai SW, Lu DY. Curcumin Promotes Connexin 43 Degradation and Temozolomide-Induced Apoptosis in Glioblastoma Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2019; 47:657-674. [PMID: 30974966 DOI: 10.1142/s0192415x19500344] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Glioblastoma (GBM) is the most commonly occurring tumor in the cerebral hemispheres. Currently, temozolomide (TMZ), an alkylating agent that induces DNA strand breaks, is considered the frontline chemotherapeutic agent for GBM. Despite its frontline status, GBM patients commonly exhibit resistance to TMZ treatment. We have recently established and characterized TMZ-resistant human glioma cells. The aim of this study is to investigate whether curcumin modulates cell apoptosis through the alternation of the connexin 43 (Cx43) protein level in TMZ-resistant GBM. Overexpression of Cx43, but not ATP-binding cassette transporters (ABC transporters), was observed (approximately 2.2-fold) in TMZ-resistant GBM cells compared to the Cx43 levels in parental GBM cells. Furthermore, at a concentration of 10 μ M, curcumin significantly reduced Cx43 protein expression by about 40%. In addition, curcumin did not affect the expression of other connexins like Cx26 or epithelial-to-mesenchymal transition (EMT) proteins such as β -catenin or α E-catenin. Curcumin treatment led to an increase in TMZ-induced cell apoptosis from 4% to 8%. Importantly, it did not affect the mRNA expression level of Cx43. Concomitant treatment with the translation inhibitor cycloheximide (CHX) exerted additional effects on Cx43 degradation. Treatment with the autophagy inhibitor 3-MA (methyladenine) did not affect the curcumin-induced Cx43 degradation. Interestingly, treatment with the proteasome inhibitor MG132 (carbobenzoxy-Leu-Leu-leucinal) significantly negated the curcumin-induced Cx43 degradation, which suggests that curcumin-induced Cx43 degradation occurs through the ubiquitin-proteasome pathway.
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Affiliation(s)
- Bor-Ren Huang
- * Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.,¶ Department of Neurosurgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan.,∥ School of Medicine, Tzu Chi University, Taichung, Taiwan
| | - Chon-Haw Tsai
- ** Department of Neurology, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Chuan Chen
- †† Institute of Biochemistry, College of Life Science, National Chung Hsing University, Taichung, Taiwan
| | - Tzong-Der Way
- † Department of Biological Science and Technology, College of Life Sciences, China Medical University, Taichung, Taiwan
| | - Jung-Yie Kao
- †† Institute of Biochemistry, College of Life Science, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Shu Liu
- ‡ Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Hsiao-Yun Lin
- ‡ Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Sheng-Wei Lai
- § Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Dah-Yuu Lu
- ‡ Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan.,‡‡ Department of Photonics and Communication Engineering, Asia University, Taichung, Taiwan
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Uncovering the Neuroprotective Mechanisms of Curcumin on Transthyretin Amyloidosis. Int J Mol Sci 2019; 20:ijms20061287. [PMID: 30875761 PMCID: PMC6471102 DOI: 10.3390/ijms20061287] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/02/2019] [Accepted: 03/07/2019] [Indexed: 02/07/2023] Open
Abstract
Transthyretin (TTR) amyloidoses (ATTR amyloidosis) are diseases associated with transthyretin (TTR) misfolding, aggregation and extracellular deposition in tissues as amyloid. Clinical manifestations of the disease are variable and include mainly polyneuropathy and/or cardiomyopathy. The reasons why TTR forms aggregates and amyloid are related with amino acid substitutions in the protein due to mutations, or with environmental alterations associated with aging, that make the protein more unstable and prone to aggregation. According to this model, several therapeutic approaches have been proposed for the diseases that range from stabilization of TTR, using chemical chaperones, to clearance of the aggregated protein deposited in tissues in the form of oligomers or small aggregates, by the action of disruptors or by activation of the immune system. Interestingly, different studies revealed that curcumin presents anti-amyloid properties, targeting multiple steps in the ATTR amyloidogenic cascade. The effects of curcumin on ATTR amyloidosis will be reviewed and discussed in the current work in order to contribute to knowledge of the molecular mechanisms involved in TTR amyloidosis and propose more efficient drugs for therapy.
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Deng S, Shanmugam MK, Kumar AP, Yap CT, Sethi G, Bishayee A. Targeting autophagy using natural compounds for cancer prevention and therapy. Cancer 2019; 125:1228-1246. [DOI: 10.1002/cncr.31978] [Citation(s) in RCA: 181] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/24/2018] [Accepted: 12/10/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Shuo Deng
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore
| | - Muthu K. Shanmugam
- Department of Pharmacology Yong Loo Lin School of Medicine, National University of Singapore Singapore
| | - Alan Prem Kumar
- Department of Pharmacology Yong Loo Lin School of Medicine, National University of Singapore Singapore
- Cancer Science Institute of Singapore National University of Singapore Singapore
- Cancer Program, Medical Science Cluster Yong Loo Lin School of Medicine, National University of Singapore Singapore
- National University Cancer Institute National University Health System Singapore
- Curtin Medical School, Faculty of Health Sciences Curtin University Perth West Australia Australia
| | - Celestial T. Yap
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore
- National University Cancer Institute National University Health System Singapore
| | - Gautam Sethi
- Department of Pharmacology Yong Loo Lin School of Medicine, National University of Singapore Singapore
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Abstract
Cathepsins (CTS) are mainly lysosomal acid hydrolases extensively involved in the prognosis of different diseases, and having a distinct role in tumor progression by regulating cell proliferation, autophagy, angiogenesis, invasion, and metastasis. As all these processes conjunctively lead to cancer progression, their site-specific regulation might be beneficial for cancer treatment. CTS regulate activation of the proteolytic cascade and protein turnover, while extracellular CTS is involved in promoting extracellular matrix degradation and angiogenesis, thereby stimulating invasion and metastasis. Despite cancer regulation, the involvement of CTS in cellular adaptation toward chemotherapy and radiotherapy augments their therapeutic potential. However, lysosomal permeabilization mediated cytosolic translocation of CTS induces programmed cell death. This complex behavior of CTS generates the need to discuss the different aspects of CTS associated with cancer regulation. In this review, we mainly focused on the significance of each cathepsin in cancer signaling and their targeting which would provide noteworthy information in the context of cancer biology and therapeutics.
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Affiliation(s)
- Tejinder Pal Khaket
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Taeg Kyu Kwon
- Department of Immunology, School of Medicine, Keimyung University, Dalseo-Gu, Daegu 704-701, Republic of Korea.
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea.
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66
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The Role of Tissue Transglutaminase in Cancer Cell Initiation, Survival and Progression. Med Sci (Basel) 2019; 7:medsci7020019. [PMID: 30691081 PMCID: PMC6409630 DOI: 10.3390/medsci7020019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 12/22/2022] Open
Abstract
Tissue transglutaminase (transglutaminase type 2; TG2) is the most ubiquitously expressed member of the transglutaminase family (EC 2.3.2.13) that catalyzes specific post-translational modifications of proteins through a calcium-dependent acyl-transfer reaction (transamidation). In addition, this enzyme displays multiple additional enzymatic activities, such as guanine nucleotide binding and hydrolysis, protein kinase, disulfide isomerase activities, and is involved in cell adhesion. Transglutaminase 2 has been reported as one of key enzymes that is involved in all stages of carcinogenesis; the molecular mechanisms of action and physiopathological effects depend on its expression or activities, cellular localization, and specific cancer model. Since it has been reported as both a potential tumor suppressor and a tumor-promoting factor, the role of this enzyme in cancer is still controversial. Indeed, TG2 overexpression has been frequently associated with cancer stem cells’ survival, inflammation, metastatic spread, and drug resistance. On the other hand, the use of inducers of TG2 transamidating activity seems to inhibit tumor cell plasticity and invasion. This review covers the extensive and rapidly growing field of the role of TG2 in cancer stem cells survival and epithelial–mesenchymal transition, apoptosis and differentiation, and formation of aggressive metastatic phenotypes.
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Moghaddam NSA, Oskouie MN, Butler AE, Petit PX, Barreto GE, Sahebkar A. Hormetic effects of curcumin: What is the evidence? J Cell Physiol 2018; 234:10060-10071. [PMID: 30515809 DOI: 10.1002/jcp.27880] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 11/15/2018] [Indexed: 12/26/2022]
Abstract
Curcumin (diferuloylmethane), a component of the yellow powder prepared from the roots of Curcuma longa or Zingiberaceae (known as turmeric) is not only widely used to color and flavor food but also used as a pharmaceutical agent. Curcumin demonstrates anti-inflammatory, anticarcinogenic, antiaging, and antioxidant activity, as well as efficacy in wound healing. Notably, curcumin is a hormetic agent (hormetin), as it is stimulatory at low doses and inhibitory at high doses. Hormesis by curcumin could be also a particular function at low doses (i.e., antioxidant behavior) and another function at high dose (i.e., induction of autophagy and cell death). Recent findings suggest that curcumin exhibits biphasic dose-responses on cells, with low doses having stronger effects than high doses; examples being activation of the mitogen-activated protein kinase signaling pathway or antioxidant activity. This indicates that many effects induced by curcumin are dependent on dose and some effects might be greater at lower doses, indicative of a hormetic response. Despite the consistent occurrence of hormetic responses of curcumin in a wide range of biomedical models, epidemiological and clinical trials are needed to assess the nature of curcumin's dose-response in humans. Fortunately, more than one hundred clinical trials with curcumin and curcumin derivatives are ongoing. In this review, we provide the first comprehensive analysis supportive of the hormetic behavior of curcumin and curcumin derivatives.
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Affiliation(s)
| | - Mohammad Nosrati Oskouie
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alexandra E Butler
- Diabetes Research Center, Qatar Biomedical Research Institute, Doha, Qatar
| | - Patrice X Petit
- CNRS FR3636 Institut de Neurosciences "Mitochondria, Apoptosis and Autophagy Signalling," Université Paris-Descartes, Paris, France
| | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia.,Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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68
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Yu T, Dohl J, Elenberg F, Chen Y, Deuster P. Curcumin induces concentration‐dependent alterations in mitochondrial function through ROS in C2C12 mouse myoblasts. J Cell Physiol 2018; 234:6371-6381. [DOI: 10.1002/jcp.27370] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 08/17/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Tianzheng Yu
- Department of Military and Emergency Medicine Consortium for Health and Military Performance, Uniformed Services University of the Health Sciences Bethesda Maryland
| | - Jacob Dohl
- Department of Military and Emergency Medicine Consortium for Health and Military Performance, Uniformed Services University of the Health Sciences Bethesda Maryland
| | - Falicia Elenberg
- Department of Military and Emergency Medicine Consortium for Health and Military Performance, Uniformed Services University of the Health Sciences Bethesda Maryland
| | - Yifan Chen
- Department of Military and Emergency Medicine Consortium for Health and Military Performance, Uniformed Services University of the Health Sciences Bethesda Maryland
| | - Patricia Deuster
- Department of Military and Emergency Medicine Consortium for Health and Military Performance, Uniformed Services University of the Health Sciences Bethesda Maryland
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69
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Garrido-Armas M, Corona JC, Escobar ML, Torres L, Ordóñez-Romero F, Hernández-Hernández A, Arenas-Huertero F. Paraptosis in human glioblastoma cell line induced by curcumin. Toxicol In Vitro 2018; 51:63-73. [PMID: 29723631 DOI: 10.1016/j.tiv.2018.04.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 04/27/2018] [Accepted: 04/28/2018] [Indexed: 12/20/2022]
Abstract
Curcumin is a polyphenol compound extracted from Curcuma longa plant, is a molecule with pleiotropic effects that suppresses transformation, proliferation and metastasis of malignant tumors. Curcumin can cause different kinds of cell death depending of its concentration on the exposed cell type. Here we show that exposure of the glioblastoma cell line A172 to curcumin at 50 μM, the IC50, causes morphological change characteristic of paraptosis cell-death. Vesicles derived from the endoplasmic reticulum (ER) and low membrane potential of the mitochondria were constantly found in the exposed cells. Furthermore, changes in expression of the ER Stress Response (ERSR) genes IRE1 and ATF6, and the microRNAs (miRNAs) miR-27a, miR-222, miR-449 was observed after exposure to curcumin. AKT-Insulin and p53-BCL2 networks were predicted being modulated by the affected miRNAs. Furthermore, AKT protein levels reduction was confirmed. Our data, strongly suggest that curcumin exerts its cell-death properties by affecting the integrity of the reticulum, leading to paraptosis in the glioblastoma cells. These data unveils the versatility of curcumin to control cancer progression.
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Affiliation(s)
| | - Juan Carlos Corona
- Laboratorio de Neurociencias, Hospital Infantil de México Federico Gómez, Av. Dr. Márquez 162. Colonia Doctores, C.P. 06720 Ciudad de México, Mexico
| | - Maria Luisa Escobar
- Departamento de Biología Celular, Laboratorio de Microscopía Electrónica, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 3000, Circuito Exterior S/N Delegación Coyoacán, C.P. 04510. Ciudad Universitaria, Ciudad de México, México
| | - Leda Torres
- Laboratorio de Citogenética, Departamento de Investigación en Genética Humana, Instituto Nacional de Pediatría, Av. Insurgentes Sur 3700, Letra C, Col. Insurgentes Cuicuilco, Delegación Coyoacán, C.P. 04530 Ciudad de México, México
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70
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Moosavi MA, Haghi A, Rahmati M, Taniguchi H, Mocan A, Echeverría J, Gupta VK, Tzvetkov NT, Atanasov AG. Phytochemicals as potent modulators of autophagy for cancer therapy. Cancer Lett 2018; 424:46-69. [PMID: 29474859 DOI: 10.1016/j.canlet.2018.02.030] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 02/18/2018] [Accepted: 02/19/2018] [Indexed: 02/07/2023]
Abstract
The dysregulation of autophagy is involved in the pathogenesis of a broad range of diseases, and accordingly universal research efforts have focused on exploring novel compounds with autophagy-modulating properties. While a number of synthetic autophagy modulators have been identified as promising cancer therapy candidates, autophagy-modulating phytochemicals have also attracted attention as potential treatments with minimal side effects. In this review, we firstly highlight the importance of autophagy and its relevance in the pathogenesis and treatment of cancer. Subsequently, we present the data on common phytochemicals and their mechanism of action as autophagy modulators. Finally, we discuss the challenges associated with harnessing the autophagic potential of phytochemicals for cancer therapy.
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Affiliation(s)
- Mohammad Amin Moosavi
- Department of Molecular Medicine, National Institute of Genetic Engineering and Biotechnology, P.O Box:14965/161, Tehran, Iran.
| | - Atousa Haghi
- Young Researchers & Elite Club, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Marveh Rahmati
- Cancer Biology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hiroaki Taniguchi
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, 05-552 Jastrzebiec, Poland
| | - Andrei Mocan
- Department of Pharmaceutical Botany, "Iuliu Haţieganu" University of Medicine and Pharmacy, Gheorghe Marinescu 23 Street, 400337 Cluj-Napoca, Romania
| | - Javier Echeverría
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago 9170022, Chile
| | - Vijai K Gupta
- Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618 Tallinn, Estonia
| | - Nikolay T Tzvetkov
- Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; NTZ Lab Ltd., Krasno Selo 198, Sofia 1618, Bulgaria
| | - Atanas G Atanasov
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, 05-552 Jastrzebiec, Poland; Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
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71
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El Nebrisi EG, Bagdas D, Toma W, Al Samri H, Brodzik A, Alkhlaif Y, Yang KHS, Howarth FC, Damaj IM, Oz M. Curcumin Acts as a Positive Allosteric Modulator of α7-Nicotinic Acetylcholine Receptors and Reverses Nociception in Mouse Models of Inflammatory Pain. J Pharmacol Exp Ther 2018; 365:190-200. [PMID: 29339457 DOI: 10.1124/jpet.117.245068] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 12/27/2017] [Indexed: 12/11/2022] Open
Abstract
Effects of curcumin, a major ingredient of turmeric, were tested on the function of the α7-subunit of the human nicotinic acetylcholine (α7-nACh) receptor expressed in Xenopus oocytes and on nociception in mouse models of tonic and visceral pain. Curcumin caused a significant potentiation of currents induced by acetylcholine (ACh; 100 μM) with an EC50 value of 0.2 µM. The effect of curcumin was not dependent on the activation of G-proteins and protein kinases and did not involve Ca2+-dependent Cl- channels expressed endogenously in oocytes. Importantly, the extent of curcumin potentiation was enhanced significantly by decreasing ACh concentrations. Curcumin did not alter specific binding of [125I]α-bungarotoxin. In addition, curcumin attenuated nociceptive behavior in both tonic and visceral pain models without affecting motor and locomotor activity and without producing tolerance. Pharmacological and genetic approaches revealed that the antinociceptive effect of curcumin was mediated by α7-nACh receptors. Curcumin potentiated the antinociceptive effects of the α7-nACh receptor agonist N-(3R)-1-azabicyclo[2.2.2]oct-3-yl-4-chlorobenzamide (PNU282987). Collectively, our results indicate that curcumin is a positive allosteric modulator of α7-nACh receptor and reverses nociception in mouse models of tonic and visceral pain.
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Affiliation(s)
- Eslam Gaber El Nebrisi
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Deniz Bagdas
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Wisam Toma
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Halima Al Samri
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Anna Brodzik
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Yasmin Alkhlaif
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Keun-Hang Susan Yang
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Frank Christopher Howarth
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Imad M Damaj
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
| | - Murat Oz
- Departments of Pharmacology (E.G.E.N., H.A.S., M.O.) and Physiology (F.C.H.), College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates; Department of Pharmacology and Toxicology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia (D.B., W.T., A.B., Y.A., I.M.D.); Experimental Animals Breeding and Research Center, Faculty of Medicine, Uludag University, Bursa, Turkey (D.B.); Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, California (K.-H.S.Y.); and Department of Basic Medical Sciences, College of Medicine, Qatar University, Doha, Qatar (M.O.)
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72
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Willett R, Martina JA, Zewe JP, Wills R, Hammond GRV, Puertollano R. TFEB regulates lysosomal positioning by modulating TMEM55B expression and JIP4 recruitment to lysosomes. Nat Commun 2017; 8:1580. [PMID: 29146937 PMCID: PMC5691037 DOI: 10.1038/s41467-017-01871-z] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 10/20/2017] [Indexed: 12/27/2022] Open
Abstract
Lysosomal distribution is linked to the role of lysosomes in many cellular functions, including autophagosome degradation, cholesterol homeostasis, antigen presentation, and cell invasion. Alterations in lysosomal positioning contribute to different human pathologies, such as cancer, neurodegeneration, and lysosomal storage diseases. Here we report the identification of a novel mechanism of lysosomal trafficking regulation. We found that the lysosomal transmembrane protein TMEM55B recruits JIP4 to the lysosomal surface, inducing dynein-dependent transport of lysosomes toward the microtubules minus-end. TMEM55B overexpression causes lysosomes to collapse into the cell center, whereas depletion of either TMEM55B or JIP4 results in dispersion toward the cell periphery. TMEM55B levels are transcriptionally upregulated following TFEB and TFE3 activation by starvation or cholesterol-induced lysosomal stress. TMEM55B or JIP4 depletion abolishes starvation-induced retrograde lysosomal transport and prevents autophagosome-lysosome fusion. Overall our data suggest that the TFEB/TMEM55B/JIP4 pathway coordinates lysosome movement in response to a variety of stress conditions.
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Affiliation(s)
- Rose Willett
- Cell Biology and Physiology Center, National Heart, Lung and Blood Institute, National Institutes of Health, 50 South Drive, Building 50, Room 3537, Bethesda, MD, 20892, USA
| | - José A Martina
- Cell Biology and Physiology Center, National Heart, Lung and Blood Institute, National Institutes of Health, 50 South Drive, Building 50, Room 3537, Bethesda, MD, 20892, USA
| | - James P Zewe
- Department of Cell Biology, University of Pittsburgh School of Medicine, 200 Lothrop Street, Room S332 Biomedical Sciences Tower, Pittsburgh, PA, 15213, USA
| | - Rachel Wills
- Department of Cell Biology, University of Pittsburgh School of Medicine, 200 Lothrop Street, Room S332 Biomedical Sciences Tower, Pittsburgh, PA, 15213, USA
| | - Gerald R V Hammond
- Department of Cell Biology, University of Pittsburgh School of Medicine, 200 Lothrop Street, Room S332 Biomedical Sciences Tower, Pittsburgh, PA, 15213, USA
| | - Rosa Puertollano
- Cell Biology and Physiology Center, National Heart, Lung and Blood Institute, National Institutes of Health, 50 South Drive, Building 50, Room 3537, Bethesda, MD, 20892, USA.
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73
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Tiwari A, Singh A, Garg N, Randhawa JK. Curcumin encapsulated zeolitic imidazolate frameworks as stimuli responsive drug delivery system and their interaction with biomimetic environment. Sci Rep 2017; 7:12598. [PMID: 28974697 PMCID: PMC5626696 DOI: 10.1038/s41598-017-12786-6] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 09/15/2017] [Indexed: 01/22/2023] Open
Abstract
Metal organic frameworks (MOFs) exhibit unique features of finely tunable pore structures, excellent chemical stability and flexible surface structural functionality, making them advantageous for a wide range of applications including energy storage, compound separation, catalysis, and drug delivery. The present work enlightens a novel approach of single step fabrication of CCM-ZIF-8 as a drug carrier and its application as stimuli responsive drug delivery systems via external stimuli involving change in pH and in presence of biomimetic cell membrane like environment using liposomes and SDS micelles. The methodology is devoid of any post synthesis drug loading steps. The synthesized curcumin encapsulated ZIF-8 frameworks demonstrate ultrahigh drug encapsulation efficiency (ca. 83.33%) and good chemical stability. In vitro drug release of curcumin was three times higher in acidic medium than in physiological pH. Cytotoxicity results demonstrated enhanced therapeutic effect of CCM-ZIF-8 than free curcumin. Confocal microscopy results confirmed the easy cellular internalization of CCM-ZIF-8 in HeLa cells. Intracellular distribution studies at various incubation times confirmed the clathrin-mediated endocytosis to lysosomal pathway of CCM-ZIF-8, but without mitochondria being an intracellular fate. The results signify that CCM-ZIF-8 is an efficient drug carrier for passive tumor therapy in future for cancer treatments.
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Affiliation(s)
- Ashish Tiwari
- School of Engineering, Indian Institute of Technology Mandi, Himachal Pradesh, India
| | - Ashutosh Singh
- School of Basic Sciences, Indian Institute of Technology Mandi, Himachal Pradesh, India
| | - Neha Garg
- School of Basic Sciences, Indian Institute of Technology Mandi, Himachal Pradesh, India.
| | - Jaspreet K Randhawa
- School of Engineering, Indian Institute of Technology Mandi, Himachal Pradesh, India.
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74
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Georgakopoulos ND, Frison M, Alvarez MS, Bertrand H, Wells G, Campanella M. Reversible Keap1 inhibitors are preferential pharmacological tools to modulate cellular mitophagy. Sci Rep 2017; 7:10303. [PMID: 28871145 PMCID: PMC5583253 DOI: 10.1038/s41598-017-07679-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 06/29/2017] [Indexed: 01/15/2023] Open
Abstract
Mitophagy orchestrates the autophagic degradation of dysfunctional mitochondria preventing their pathological accumulation and contributing to cellular homeostasis. We previously identified a novel chemical tool (hereafter referred to as PMI), which drives mitochondria into autophagy without collapsing their membrane potential (ΔΨm). PMI is an inhibitor of the protein-protein interaction (PPI) between the transcription factor Nrf2 and its negative regulator, Keap1 and is able to up-regulate the expression of autophagy-associated proteins, including p62/SQSTM1. Here we show that PMI promotes mitochondrial respiration, leading to a superoxide-dependent activation of mitophagy. Structurally distinct Keap1-Nrf2 PPI inhibitors promote mitochondrial turnover, while covalent Keap1 modifiers, including sulforaphane (SFN) and dimethyl fumarate (DMF), are unable to induce a similar response. Additionally, we demonstrate that SFN reverses the effects of PMI in co-treated cells by reducing the accumulation of p62 in mitochondria and subsequently limiting their autophagic degradation. This study highlights the unique features of Keap1-Nrf2 PPI inhibitors as inducers of mitophagy and their potential as pharmacological agents for the treatment of pathological conditions characterized by impaired mitochondrial quality control.
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Affiliation(s)
- Nikolaos D Georgakopoulos
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, University of London, Royal College Street, NW1 0TU, London, United Kingdom.,UCL School of Pharmacy, 29/39 Brunswick Square, London, United Kingdom
| | - Michele Frison
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, University of London, Royal College Street, NW1 0TU, London, United Kingdom
| | - Maria Soledad Alvarez
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, University of London, Royal College Street, NW1 0TU, London, United Kingdom
| | - Hélène Bertrand
- UCL School of Pharmacy, 29/39 Brunswick Square, London, United Kingdom
| | - Geoff Wells
- UCL School of Pharmacy, 29/39 Brunswick Square, London, United Kingdom
| | - Michelangelo Campanella
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, University of London, Royal College Street, NW1 0TU, London, United Kingdom. .,University College London Consortium for Mitochondrial Research, Gower Street, WC1 6BT, London, United Kingdom.
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75
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Anti-inflammation performance of curcumin-loaded mesoporous calcium silicate cement. J Formos Med Assoc 2017; 116:679-688. [DOI: 10.1016/j.jfma.2017.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/26/2017] [Accepted: 06/07/2017] [Indexed: 12/18/2022] Open
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76
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Rainey NE, Saric A, Leberre A, Dewailly E, Slomianny C, Vial G, Zeliger HI, Petit PX. Synergistic cellular effects including mitochondrial destabilization, autophagy and apoptosis following low-level exposure to a mixture of lipophilic persistent organic pollutants. Sci Rep 2017; 7:4728. [PMID: 28680151 PMCID: PMC5498599 DOI: 10.1038/s41598-017-04654-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 05/25/2017] [Indexed: 12/13/2022] Open
Abstract
Humans are exposed to multiple exogenous environmental pollutants. Many of these compounds are parts of mixtures that can exacerbate harmful effects of the individual mixture components. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), is primarily produced via industrial processes including incineration and the manufacture of herbicides. Both endosulfan and TCDD are persistent organic pollutants which elicit cytotoxic effects by inducing reactive oxygen species generation. Sublethal concentrations of mixtures of TCDD and endosulfan increase oxidative stress, as well as mitochondrial homeostasis disruption, which is preceded by a calcium rise and, in fine, induce cell death. TCDD+Endosulfan elicit a complex signaling sequence involving reticulum endoplasmic destalilization which leads to Ca2+ rise, superoxide anion production, ATP drop and late NADP(H) depletion associated with a mitochondrial induced apoptosis concomitant early autophagic processes. The ROS scavenger, N-acetyl-cysteine, blocks both the mixture-induced autophagy and death. Calcium chelators act similarly and mitochondrially targeted anti-oxidants also abrogate these effects. Inhibition of the autophagic fluxes with 3-methyladenine, increases mixture-induced cell death. These findings show that subchronic doses of pollutants may act synergistically. They also reveal that the onset of autophagy might serve as a protective mechanism against ROS-triggered cytotoxic effects of a cocktail of pollutants in Caco-2 cells and increase their tumorigenicity.
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Affiliation(s)
- Nathan E Rainey
- Laboratoire de Toxicologie, Pharmacologie et Signalisation Cellulaire, INSERM S-1124, Université Paris-Descartes, Centre Universitaire des Saints-Pères, 45 Rue des Saints-Pères, F-75270, Paris, Cedex 06, France
- Laboratory for Vascular Translational Science (LVTS), INSERM U1148, X. Bichat Hospital, Université Paris 13, UFR SMBH Sorbonne Paris Cité, 75018, Paris, France
| | - Ana Saric
- Laboratoire de Toxicologie, Pharmacologie et Signalisation Cellulaire, INSERM S-1124, Université Paris-Descartes, Centre Universitaire des Saints-Pères, 45 Rue des Saints-Pères, F-75270, Paris, Cedex 06, France
- Division of Molecular Medicine, Rudger Boskovic Institute, Zagreb, Croatia
| | - Alexandre Leberre
- Laboratoire de Toxicologie, Pharmacologie et Signalisation Cellulaire, INSERM S-1124, Université Paris-Descartes, Centre Universitaire des Saints-Pères, 45 Rue des Saints-Pères, F-75270, Paris, Cedex 06, France
| | - Etienne Dewailly
- Laboratoire de Physiologie cellulaire, INSERM U800, Université des Sciences et Techniques de Lille 1, F-59655, Villeneuve d'Ascq, Cedex, France
| | - Christian Slomianny
- Laboratoire de Physiologie cellulaire, INSERM U800, Université des Sciences et Techniques de Lille 1, F-59655, Villeneuve d'Ascq, Cedex, France
| | - Guillaume Vial
- Unité 1060 INSERM CarMen/Univ.Lyon1/INRA 1235, INSA, Bât. IMBL, La Doua 11 Avenue Jean Capelle, 69100, Villeurbanne, France
| | - Harold I Zeliger
- Zeliger Chemical, Toxicological and Environmental Research, 41 Wildwood Drive, Cape Elizabeth, Maine, 04107, USA
| | - Patrice X Petit
- Laboratoire de Toxicologie, Pharmacologie et Signalisation Cellulaire, INSERM S-1124, Université Paris-Descartes, Centre Universitaire des Saints-Pères, 45 Rue des Saints-Pères, F-75270, Paris, Cedex 06, France.
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Pignanelli C, Ma D, Noel M, Ropat J, Mansour F, Curran C, Pupulin S, Larocque K, Wu J, Liang G, Wang Y, Pandey S. Selective Targeting of Cancer Cells by Oxidative Vulnerabilities with Novel Curcumin Analogs. Sci Rep 2017; 7:1105. [PMID: 28439094 PMCID: PMC5430918 DOI: 10.1038/s41598-017-01230-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/23/2017] [Indexed: 12/20/2022] Open
Abstract
Recently, research has focused on targeting the oxidative and metabolic vulnerabilities in cancer cells. Natural compounds like curcumin that target such susceptibilities have failed further clinical advancements due to the poor stability and bioavailability as well as the need of high effective doses. We have synthesized and evaluated the anti-cancer activity of several monocarbonyl analogs of curcumin. Interestingly, two novel analogs (Compound A and I) in comparison to curcumin, have increased chemical stability and have greater anti-cancer activity in a variety of human cancer cells, including triple-negative, inflammatory breast cancer cells. In particular, the generation of reactive oxygen species was selective to cancer cells and occurred upstream of mitochondrial collapse and execution of apoptosis. Furthermore, Compound A in combination with another cancer-selective/pro-oxidant, piperlongumine, caused an enhanced anti-cancer effect. Most importantly, Compound A was well tolerated by mice and was effective in inhibiting the growth of human triple-negative breast cancer and leukemia xenografts in vivo when administered intraperitoneally. Thus, exploiting oxidative vulnerabilities in cancer cells could be a selective and efficacious means to eradicate malignant cells as demonstrated by the curcumin analogs presented in this report with high therapeutic potential.
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Affiliation(s)
- Christopher Pignanelli
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Dennis Ma
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Megan Noel
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Jesse Ropat
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Fadi Mansour
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Colin Curran
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Simon Pupulin
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Kristen Larocque
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Jianzhang Wu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, University Town, Chashan, Wenzhou, Zhejiang, 325035, P.R. China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, University Town, Chashan, Wenzhou, Zhejiang, 325035, P.R. China
| | - Yi Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, University Town, Chashan, Wenzhou, Zhejiang, 325035, P.R. China.
| | - Siyaram Pandey
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada.
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Yang C, Ma X, Wang Z, Zeng X, Hu Z, Ye Z, Shen G. Curcumin induces apoptosis and protective autophagy in castration-resistant prostate cancer cells through iron chelation. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:431-439. [PMID: 28243065 PMCID: PMC5317247 DOI: 10.2147/dddt.s126964] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background Curcumin induces apoptosis and autophagy in different cancer cells. Moreover, chemical and biological experiments have evidenced that curcumin is a biologically active iron chelator and induces cytotoxicity through iron chelation. We thus hypothesized that curcumin may induce apoptosis and autophagy in castration-resistant prostate cancer (CRPC) cells through its iron-chelating properties. Materials and methods CRPC cells were loaded with curcumin alone or in combination with ferric ammonium citrate (FAC). Cytotoxicity was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Apoptosis was assessed by flow cytometry, terminal deoxynucleotidyl transferase nick end labeling (TUNEL) assay and caspase activity. Autophagy status was analyzed by the detection of autophagosomes and light chain 3-II (LC3-II) using transmission electron microscopy and Western blot. Iron-binding activity of curcumin was assessed by spectrophotometry and MTT assay. The expression levels of transferrin receptor 1 (TfR1) and iron regulatory protein 1 (IRP1) were examined by Western blot. Results Curcumin induced apoptosis and autophagy in CRPC cells. Combining curcumin with autophagy inhibitors (3-methyladenine [3-MA]) synergized the apoptotic effect of curcumin. Moreover, curcumin bound to FAC at a ratio of ~1:1, as assessed by spectrophotometry and MTT assay. Apoptosis and autophagy induced by curcumin were counteracted by equal amounts of FAC. At apoptosis- and autophagy-inducing concentrations, curcumin enhanced the expression levels of TfR1 and IRP1, indicative of iron deprivation induced by curcumin. Conclusion Together, our results indicate that curcumin induces apoptosis and protective autophagy in CRPC cells, which are at least partially dependent on its iron-chelating properties.
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Affiliation(s)
| | - Xueyou Ma
- Department of Urology, Tongji Hospital
| | | | - Xing Zeng
- Department of Urology, Tongji Hospital
| | | | | | - Guanxin Shen
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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79
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Fu Y, Liu Y, Wang J, Li C, Zhou S, Yang Y, Zhou P, Lu C, Li C. Calcium release induced by 2-pyridinecarboxaldehyde thiosemicarbazone and its copper complex contributes to tumor cell death. Oncol Rep 2017; 37:1662-1670. [PMID: 28112358 DOI: 10.3892/or.2017.5395] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 08/22/2016] [Indexed: 11/06/2022] Open
Abstract
Thiosemicarbazones display significant antitumor activity and their copper complexes also exhibit enhanced biological activities in most situations, but the underlying mechanism is poorly understood. Therefore, investigation of the mechanism involved in the change upon chelation is required to extend our understanding of the effects of thiosemicarbazones. In the present study, the inhibitory effect of 2-pyridinecarboxaldehyde thiosemicarbazone (PCT) and its copper complex (PCT-Cu) on cell proliferation was investigated. The copper chelate exhibited a 3- to 10-fold increase in antitumor activity (with an IC50 <5 µM). The results showed that both PCT and PCT-Cu induced reactive oxygen species (ROS) generation in vitro and in vivo, caused cellular DNA fragmentation, depolarization of the mitochondrial membrane and cell cycle arrest. Western blotting showed that both PCT and PCT-Cu induced apoptosis. Upregulation of GRP78 in HepG2 cells following treatment with the agents indicated that endoplasmic reticulum (ER) stress occurred. Furthermore calcium release was revealed in this study, suggesting that PCT and PCT-Cu disturbed calcium homeostasis. It was noted that PCT-Cu sensitized thapsigargin‑stimulated calcium release from the ER, which was correlated with the ROS level they induced, implying that the antitumor activity of PCT and PCT-Cu partly stemmed from calcium mobilization, a situation that was reported in few studies. Our findings may significantly contribute to the understanding of the anti‑proliferative effect of the derivatives of thiosemicarbazones along with their antitumor mechanism.
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Affiliation(s)
- Yun Fu
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Youxun Liu
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Jiangang Wang
- Department of Pathophysiology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Cuiping Li
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Sufeng Zhou
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yun Yang
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Pingxin Zhou
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Chengbiao Lu
- Department of Pathophysiology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Changzheng Li
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
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Wiggers H, Zaioncz S, Cheleski J, Mainardes R, Khalil N. Curcumin, a Multitarget Phytochemical. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63930-1.00007-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hong CM, Ahn BC. Redifferentiation of Radioiodine Refractory Differentiated Thyroid Cancer for Reapplication of I-131 Therapy. Front Endocrinol (Lausanne) 2017; 8:260. [PMID: 29085335 PMCID: PMC5649198 DOI: 10.3389/fendo.2017.00260] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 09/20/2017] [Indexed: 01/29/2023] Open
Abstract
Although most differentiated thyroid cancers show excellent prognosis, treating radioiodine refractory differentiated thyroid cancer (RR-DTC) is challenging. Various therapies, including chemotherapy, radiotherapy, and targeted therapy, have been applied for RR-DTC but show limited effectiveness. Redifferentiation followed by radioiodine therapy is a promising alternative therapy for RR-DTC. Retinoic acids, histone deacetylase inhibitors, and peroxisome proliferator-activated receptor-gamma agonists are classically used as redifferentiation agents, and recent targeted molecules are also used for this purpose. Appropriate selection of redifferentiation agents for each patient, using current knowledge about genetic and biological characteristics of thyroid cancer, might increase the efficacy of redifferentiation treatment. In this review, we will discuss the mechanisms of these redifferentiation agents, results of recent clinical trials, and promising preclinical results.
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Affiliation(s)
- Chae Moon Hong
- Department of Nuclear Medicine, Kyungpook National University School of Medicine and Hospital, Daegu, South Korea
| | - Byeong-Cheol Ahn
- Department of Nuclear Medicine, Kyungpook National University School of Medicine and Hospital, Daegu, South Korea
- *Correspondence: Byeong-Cheol Ahn,
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82
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Niu T, Tian Y, Mei Z, Guo G. Inhibition of Autophagy Enhances Curcumin United light irradiation-induced Oxidative Stress and Tumor Growth Suppression in Human Melanoma Cells. Sci Rep 2016; 6:31383. [PMID: 27502897 PMCID: PMC4977547 DOI: 10.1038/srep31383] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 07/20/2016] [Indexed: 12/15/2022] Open
Abstract
Malignant melanoma is the most aggressive form of skin carcinoma, which possesses fast propagating and highly invasive characteristics. Curcumin is a natural phenol compound that has various biological activities, such as anti-proliferative and apoptosis-accelerating impacts on tumor cells. Unfortunately, the therapeutical activities of Cur are severely hindered due to its extremely low bioavailability. In this study, a cooperative therapy of low concentration Cur combined with red united blue light irradiation was performed to inspect the synergistic effects on the apoptosis, proliferation and autophagy in human melanoma A375 cell. The results showed that red united blue light irradiation efficaciously synergized with Cur to trigger oxidative stress-mediated cell death, induce apoptosis and inhibit cell proliferation. Meanwhile, Western blotting revealed that combined disposure induced the formation of autophagosomes. Conversely, inhibition of the autophagy enhanced apoptosis, obstructed cell cycle arrest and induced reversible proliferation arrest to senescence. These findings suggest that Cur combined with red united blue light irradiation could generate photochemo-preventive effects via enhancing apoptosis and triggering autophagy, and pharmacological inhibition of autophagy convert reversible arrested cells to senescence, therefore reducing the possibility that damaged cells might escape programmed death.
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Affiliation(s)
- Tianhui Niu
- Aviation Medicine Research Laboratory, The General Hospital of the Air Force, Beijing, China
| | - Yan Tian
- Department of Dermatology, The General Hospital of the Air Force, Beijing, China
| | - Zhusong Mei
- Aviation Medicine Research Laboratory, The General Hospital of the Air Force, Beijing, China
| | - Guangjin Guo
- Aviation Medicine Research Laboratory, The General Hospital of the Air Force, Beijing, China
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83
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Curcumin inhibited HGF-induced EMT and angiogenesis through regulating c-Met dependent PI3K/Akt/mTOR signaling pathways in lung cancer. MOLECULAR THERAPY-ONCOLYTICS 2016; 3:16018. [PMID: 27525306 PMCID: PMC4972091 DOI: 10.1038/mto.2016.18] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/27/2016] [Accepted: 05/27/2016] [Indexed: 01/12/2023]
Abstract
The epithelial-mesenchymal transition (EMT) and angiogenesis have emerged as two pivotal events in cancer progression. Curcumin has been extensively studied in preclinical models and clinical trials of cancer prevention due to its favorable toxicity profile. However, the possible involvement of curcumin in the EMT and angiogenesis in lung cancer remains unclear. This study found that curcumin inhibited hepatocyte growth factor (HGF)-induced migration and EMT-related morphological changes in A549 and PC-9 cells. Moreover, pretreatment with curcumin blocked HGF-induced c-Met phosphorylation and downstream activation of Akt, mTOR, and S6. These effects mimicked that of c-Met inhibitor SU11274 or PI3 kinase inhibitor LY294002 or mTOR inhibitor rapamycin treatment. c-Met gene overexpression analysis further demonstrated that curcumin suppressed lung cancer cell EMT by inhibiting c-Met/Akt/mTOR signaling pathways. In human umbilical vein endothelial cells (HUVECs), we found that curcumin also significantly inhibited PI3K/Akt/mTOR signaling and induced apoptosis and reduced migration and tube formation of HGF-treated HUVEC. Finally, in the experimental mouse model, we showed that curcumin inhibited HGF-stimulated tumor growth and induced an increase in E-cadherin expression and a decrease in vimentin, CD34, and vascular endothelial growth factor (VEGF) expression. Collectively, these findings indicated that curcumin could inhibit HGF-promoted EMT and angiogenesis by targeting c-Met and blocking PI3K/Akt/mTOR pathways.
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84
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Venkatesan T, Choi YW, Mun SP, Kim YK. Pinus radiata bark extract induces caspase-independent apoptosis-like cell death in MCF-7 human breast cancer cells. Cell Biol Toxicol 2016; 32:451-64. [PMID: 27400986 DOI: 10.1007/s10565-016-9346-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 06/28/2016] [Indexed: 01/13/2023]
Abstract
In the present study, we investigated the anticancer activity of Pinus radiata bark extract (PRE) against MCF-7 human breast cancer cells. First, we observed that PRE induces potent cytotoxic effects in MCF-7 cells. The cell death had features of cytoplasmic vacuolation, plasma membrane permeabilization, chromatin condensation, phosphatidylserine externalization, absence of executioner caspase activation, insensitivity to z-VAD-fmk (caspase inhibitor), increased accumulation of autophagic markers, and lysosomal membrane permeabilization (LMP). Both the inhibition of early stage autophagy flux and lysosomal cathepsins did not improve cell viability. The antioxidant, n-acetylcysteine, and the iron chelator, deferoxamine, failed to restore the lysosomal integrity indicating that PRE-induced LMP is independent of oxidative stress. This was corroborated with the absence of enhanced ROS production in PRE-treated cells. Chelation of both intracellular calcium and zinc promotes PRE-induced LMP. Geranylgeranylacetone, an inducer of Hsp70 expression, also had no significant protective effect on PRE-induced LMP. Moreover, we found that PRE induces endoplasmic reticulum (ER) stress and mitochondrial membrane depolarization in MCF-7 cells. The ER stress inhibitor, 4-PBA, did not restore the mitochondrial membrane integrity, whereas cathepsin inhibitors demonstrated significant protective effects. Collectively, our results suggest that PRE induces an autophagic block, LMP, ER stress, and mitochondrial dysfunction in MCF-7 cells. However, further studies are clearly warranted to explore the exact mechanism behind the anticancer activity of PRE in MCF-7 human breast cancer cells.
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Affiliation(s)
- Thamizhiniyan Venkatesan
- Department of Forest Products and Biotechnology, College of Forest Science, Kookmin University, 861-1 Chongnung-dong, Songbuk-gu, Seoul, 136-702, South Korea
| | - Young-Woong Choi
- Department of Forest Products and Biotechnology, College of Forest Science, Kookmin University, 861-1 Chongnung-dong, Songbuk-gu, Seoul, 136-702, South Korea
| | - Sung-Phil Mun
- Department of Wood Science and Technology, College of Agriculture and Life Science, Chonbuk National University, Jeonju, 561-756, South Korea
| | - Young-Kyoon Kim
- Department of Forest Products and Biotechnology, College of Forest Science, Kookmin University, 861-1 Chongnung-dong, Songbuk-gu, Seoul, 136-702, South Korea.
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85
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AbrusAgglutinin, a type II ribosome inactivating protein inhibits Akt/PH domain to induce endoplasmic reticulum stress mediated autophagy-dependent cell death. Mol Carcinog 2016; 56:389-401. [DOI: 10.1002/mc.22502] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 04/26/2016] [Accepted: 05/13/2016] [Indexed: 12/17/2022]
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Ferreira N, Gonçalves NP, Saraiva MJ, Almeida MR. Curcumin: A multi-target disease-modifying agent for late-stage transthyretin amyloidosis. Sci Rep 2016; 6:26623. [PMID: 27197872 PMCID: PMC4873750 DOI: 10.1038/srep26623] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 05/04/2016] [Indexed: 12/21/2022] Open
Abstract
Transthyretin amyloidoses encompass a variety of acquired and hereditary diseases triggered by systemic extracellular accumulation of toxic transthyretin aggregates and fibrils, particularly in the peripheral nervous system. Since transthyretin amyloidoses are typically complex progressive disorders, therapeutic approaches aiming multiple molecular targets simultaneously, might improve therapy efficacy and treatment outcome. In this study, we evaluate the protective effect of physiologically achievable doses of curcumin on the cytotoxicity induced by transthyretin oligomers in vitro by showing reduction of caspase-3 activity and the levels of endoplasmic reticulum-resident chaperone binding immunoglobulin protein. When given to an aged Familial Amyloidotic Polyneuropathy mouse model, curcumin not only reduced transthyretin aggregates deposition and toxicity in both gastrointestinal tract and dorsal root ganglia but also remodeled congophilic amyloid material in tissues. In addition, curcumin enhanced internalization, intracellular transport and degradation of transthyretin oligomers by primary macrophages from aged Familial Amyloidotic Polyneuropathy transgenic mice, suggesting an impaired activation of naïve phagocytic cells exposed to transthyretin toxic intermediate species. Overall, our results clearly support curcumin or optimized derivatives as promising multi-target disease-modifying agent for late-stage transthyretin amyloidosis.
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Affiliation(s)
- Nelson Ferreira
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal
| | - Nádia P Gonçalves
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050 - 313 Porto, Portugal
| | - Maria J Saraiva
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050 - 313 Porto, Portugal
| | - Maria R Almeida
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200 - 135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050 - 313 Porto, Portugal
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87
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Vizetto-Duarte C, Custódio L, Acosta G, Lago JHG, Morais TR, Bruno de Sousa C, Gangadhar KN, Rodrigues MJ, Pereira H, Lima RT, Vasconcelos MH, Barreira L, Rauter AP, Albericio F, Varela J. Can macroalgae provide promising anti-tumoral compounds? A closer look at Cystoseira tamariscifolia as a source for antioxidant and anti-hepatocarcinoma compounds. PeerJ 2016; 4:e1704. [PMID: 26925328 PMCID: PMC4768693 DOI: 10.7717/peerj.1704] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/27/2016] [Indexed: 01/12/2023] Open
Abstract
Marine organisms are a prolific source of drug leads in a variety of therapeutic areas. In the last few years, biomedical, pharmaceutical and nutraceutical industries have shown growing interest in novel compounds from marine organisms, including macroalgae. Cystoseira is a genus of Phaeophyceae (Fucales) macroalgae known to contain bioactive compounds. Organic extracts (hexane, diethyl ether, ethyl acetate and methanol extracts) from three Cystoseira species (C. humilis, C. tamariscifolia and C. usneoides) were evaluated for their total phenolic content, radical scavenging activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radicals, and antiproliferative activity against a human hepatocarcinoma cell line (HepG2 cells). C. tamariscifolia had the highest TPC and RSA. The hexane extract of C. tamariscifolia (CTH) had the highest cytotoxic activity (IC50 = 2.31 µg/mL), and was further tested in four human tumor (cervical adenocarcinoma HeLa; gastric adenocarcinoma AGS; colorectal adenocarcinoma HCT-15; neuroblastoma SH-SY5Y), and two non-tumor (murine bone marrow stroma S17 and human umbilical vein endothelial HUVEC) cell lines in order to determine its selectivity. CTH strongly reduced viability of all tumor cell lines, especially of HepG2 cells. Cytotoxicity was particularly selective for the latter cells with a selectivity index = 12.6 as compared to non-tumor cells. Incubation with CTH led to a 2-fold decrease of HepG2 cell proliferation as shown by the bromodeoxyuridine (BrdU) incorporation assay. CTH-treated HepG2 cells presented also pro-apoptotic features, such as increased Annexin V/propidium iodide (PI) binding and dose-dependent morphological alterations in DAPI-stained cells. Moreover, it had a noticeable disaggregating effect on 3D multicellular tumor spheroids. Demethoxy cystoketal chromane, a derivative of the meroditerpenoid cystoketal, was identified as the active compound in CTH and was shown to display selective in vitro cytotoxicity towards HepG2 cells.
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Affiliation(s)
- Catarina Vizetto-Duarte
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
| | - Luísa Custódio
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
| | - Gerardo Acosta
- Institute for Research in Biomedicine of Barcelona, Chemistry and Molecular Pharmacology, Barcelona Science Park, Baldiri Reixac, Barcelona, Spain; CIBER-BNN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac, Barcelona, Spain
| | - João H G Lago
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of Sao Paulo , São Paulo , Brazil
| | - Thiago R Morais
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of Sao Paulo , São Paulo , Brazil
| | - Carolina Bruno de Sousa
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
| | - Katkam N Gangadhar
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve, Faro, Portugal; Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Maria João Rodrigues
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
| | - Hugo Pereira
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
| | - Raquel T Lima
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, Porto, Portugal; IPATIMUP-Institute of Molecular Pathology and Immunology of the University of Porto, Cancer Drug Resistance Group, Rua Júlio Amaral de Carvalho, Porto, Portugal; Faculty of Medicine of the University of Porto, Department of Pathology and Oncology, Alameda Prof. Hernâni Monteiro, Porto, Portugal
| | - M Helena Vasconcelos
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, Porto, Portugal; IPATIMUP-Institute of Molecular Pathology and Immunology of the University of Porto, Cancer Drug Resistance Group, Rua Júlio Amaral de Carvalho, Porto, Portugal; Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo FerreiraPorto, Portugal
| | - Luísa Barreira
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
| | - Amélia P Rauter
- Center of Chemistry and Biochemistry, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon , Lisbon , Portugal
| | - Fernando Albericio
- Institute for Research in Biomedicine of Barcelona, Chemistry and Molecular Pharmacology, Barcelona Science Park, Baldiri Reixac, Barcelona, Spain; CIBER-BNN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac, Barcelona, Spain; Department of Organic Chemistry, University of Barcelona, Martí i Franqués, Barcelona, Spain
| | - João Varela
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve , Faro , Portugal
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88
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Rainey N, Motte L, Aggarwal BB, Petit PX. Curcumin hormesis mediates a cross-talk between autophagy and cell death. Cell Death Dis 2015; 6:e2003. [PMID: 26633709 PMCID: PMC4720879 DOI: 10.1038/cddis.2015.343] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- N Rainey
- INSERM U1124, Toxicology, Experimental pharmacology and Signal transduction, Université Paris-Descartes, 45 Rue des Saints-Pères, Paris 75270, France
| | - L Motte
- Université Paris 13, Sorbonne Paris Cité, UFR de Santé, Médecine et Biologie Humaine, Bobigny 93017, France
| | - B B Aggarwal
- Cytokine ResearchLaboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, 1901 East Road, Unit 1950, Houston, TX 77054, USA
| | - P X Petit
- INSERM U1124, Toxicology, Experimental pharmacology and Signal transduction, Université Paris-Descartes, 45 Rue des Saints-Pères, Paris 75270, France
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