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Nazima B, Manoharan V, Miltonprabu S. Oxidative stress induced by cadmium in the plasma, erythrocytes and lymphocytes of rats: Attenuation by grape seed proanthocyanidins. Hum Exp Toxicol 2015; 35:428-47. [PMID: 26089033 DOI: 10.1177/0960327115591376] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The present study has been designed to investigate the ameliorative effect of grape seed proanthocyanidins (GSP) on cadmium (Cd)-induced oxidative damage in rat erythrocytes. Twenty four male Wistar rats were divided into four groups: control, GSP-treated group (100 mg kg(-1) body weight (BW)), Cd-treated group (cadmium chloride, 5 mg kg(-1) BW), and GSP + Cd-treated group in which GSP was orally pre-administered 90 min before Cd intoxication for 4 weeks. At the end of the experimental period, blood samples were collected by cardiac puncture and were processed for various biochemical estimations. The extent of oxidative damage in isolated rat erythrocyte membrane was assessed by measuring lipid peroxidation, enzymatic and non-enzymatic content, calcium ion (Ca(2+))/magnesium ion (Mg(2+))-ATPase and sodium ion (Na(+))/potassium ion (K(+))-ATPase activities, free iron, calcium, hydrogen peroxide (H2O2) concentration, and osmotic fragility. Our results unveiled that Cd intoxication significantly increased the erythrocyte lipid peroxidation markers and decreased the activity of enzymatic and non-enzymatic markers in erythrocytes. Conversely, GSP pretreatment significantly prevented the decrease in the activities of antioxidant enzymes and membrane-bound ATPases. GSP also restored the levels of iron, calcium, and H2O2 in Cd-treated rats. Conformational changes in erythrocytes of various groups were also determined using morphological and ultrastructural electron microscopic analysis. The findings of our study clearly revealed that GSP affords superior protection against Cd-induced reactive oxygen species generation, lipid peroxidation, and free radical generation in Cd-treated rats, which presumably reflects the ability of this flavonoid to protect erythrocytes and lymphocytes of rats from the toxic effects of Cd.
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Affiliation(s)
- B Nazima
- Department of Zoology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India
| | - V Manoharan
- Department of Zoology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India
| | - S Miltonprabu
- Department of Zoology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India
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Lahbib K, Aouani I, Cavalier JF, Touil S. 3-Keto-1,5-bisphosphonates Alleviate Serum-Oxidative Stress in the High-fat Diet Induced Obesity in Rats. Chem Biol Drug Des 2015; 86:291-301. [DOI: 10.1111/cbdd.12493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/18/2014] [Accepted: 11/24/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Karima Lahbib
- Laboratory of Heteroatom organic chemistry; Department of Chemistry; Faculty of Sciences of Bizerta; University of Carthage; 7021 Jarzouna Tunisia
| | - Iyadh Aouani
- Laboratory of Heteroatom organic chemistry; Department of Chemistry; Faculty of Sciences of Bizerta; University of Carthage; 7021 Jarzouna Tunisia
| | - Jean-François Cavalier
- CNRS; Aix-Marseille University; UMR 7282 Enzymologie Interfaciale et Physiologie de la Lipolyse; 31 Chemin Joseph Aiguier 13402 Marseille Cedex 20 France
| | - Soufiane Touil
- Laboratory of Heteroatom organic chemistry; Department of Chemistry; Faculty of Sciences of Bizerta; University of Carthage; 7021 Jarzouna Tunisia
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Jabri MA, Rtibi K, Tounsi H, Hosni K, Souli A, El-Benna J, Marzouki L, Sakly M, Sebai H. Myrtle berry seed aqueous extract inhibits human neutrophil myeloperoxidase in vitro and attenuates acetic acid-induced ulcerative colitis in rats. RSC Adv 2015. [DOI: 10.1039/c5ra07172k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We aimed in the present study to investigate the protective effect of a myrtle (Myrtus communisL.) berry seed aqueous extract (MBSAE) on acetic acid (AA)-induced colitis in rats as well as the mechanism implicated in this coli-protection.
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Affiliation(s)
- Mohamed-Amine Jabri
- Laboratoire de Physiologie Intégrée
- Faculté des Sciences de Bizerte
- Université de Carthage
- 7021 Zarzouna
- Tunisia
| | - Kais Rtibi
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Haifa Tounsi
- Laboratoire d’Anatomie Pathologique Humaine et Expérimentale
- Institut Pasteur de Tunis
- Tunis 1002
- Tunisia
| | - Karim Hosni
- Laboratoire des Substances Naturelles
- Institut National de Recherche et d’Analyse Physico-Chimique
- 2020 Ariana
- Tunisia
| | - Abdelaziz Souli
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Jamel El-Benna
- INSERM
- U1149
- Centre de Recherche Sur l’Inflammation – Faculté de Médecine X. Bichat
- 75018-Paris
- France
| | - Lamjed Marzouki
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Mohsen Sakly
- Laboratoire de Physiologie Intégrée
- Faculté des Sciences de Bizerte
- Université de Carthage
- 7021 Zarzouna
- Tunisia
| | - Hichem Sebai
- Laboratoire de Physiologie Intégrée
- Faculté des Sciences de Bizerte
- Université de Carthage
- 7021 Zarzouna
- Tunisia
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Safwen K, Selima S, Mohamed E, Ferid L, Pascal C, Mohamed A, Ezzedine A, Meherzia M. Protective effect of grape seed and skin extract on cerebral ischemia in rat: implication of transition metals. Int J Stroke 2014; 10:415-24. [PMID: 25365917 DOI: 10.1111/ijs.12391] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 08/19/2014] [Indexed: 11/29/2022]
Abstract
Ischemic stroke is a leading cause of long lasting disability in humans and oxidative stress an important underlying cause. The present study aims to determine the effect of short term (seven-days) administration of high dosage grape seed and skin extract (GSSE 2.5 g/kg) on ischemia/reperfusion (I/R) injury in a rat model of global ischemia. Ischemia was induced by occlusion of the common carotid arteries for 30 min followed by one-hour reperfusion on control or GSSE treated animals. I/R induced a drastic oxidative stress characterized by high lipid and protein oxidation, a drop in antioxidant enzyme defenses, disturbed transition metals as free iron overload and depletion of copper, zinc and manganese as well as of associated brain enzyme activities as glutamine synthetase and lactate dehydrogenase. I/R also induced NO and calcium disruption and an increase in calpain activity, a calcium-sensitive cysteine protease. Interestingly, almost all I/R-induced disturbances were prevented by GSSE pretreatment as oxidative stress, transition metals associated enzyme activities, brain damage size and histology. Owing to its antioxidant potential, high dosage GSSE protected efficiently the brain against ischemic stroke and should be translated to humans.
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Affiliation(s)
- Kadri Safwen
- Bioactive Substance Laboratory, Biotechnology Centre, Hammam-Lif, Tunis
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Sebai H, Jabri MA, Souli A, Hosni K, Selmi S, Tounsi H, Tebourbi O, Boubaker S, El-Benna J, Sakly M. Protective effect of Artemisia campestris extract against aspirin-induced gastric lesions and oxidative stress in rat. RSC Adv 2014. [DOI: 10.1039/c4ra08564g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Sebai H, Jabri MA, Souli A, Rtibi K, Selmi S, Tebourbi O, El-Benna J, Sakly M. Antidiarrheal and antioxidant activities of chamomile (Matricaria recutita L.) decoction extract in rats. JOURNAL OF ETHNOPHARMACOLOGY 2014; 152:327-332. [PMID: 24463157 DOI: 10.1016/j.jep.2014.01.015] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 11/21/2013] [Accepted: 01/14/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Matricaria recutita L. (Chamomile) has been widely used in the Tunisian traditional medicine for the treatment of digestive system disorders. The present work aims to investigate the protective effects of chamomile decoction extract (CDE) against castor oil-induced diarrhea and oxidative stress in rats. METHODS The antidiarrheal activity was evaluated using castor oil-induced diarrhea method. In this respect, rats were divided into six groups: Control, Castor oil, Castor oil+Loperamide (LOP) and Castor oil+various doses of CDE. Animals were per orally (p.o.) pre-treated with CDE during 1h and intoxicated for 2 or 4h by acute oral administration of castor oil. RESULTS Our results showed that CDE produced a significant dose-dependent protection against castor oil-induced diarrhea and intestinal fluid accumulation. On the other hand, we showed that diarrhea was accompagned by an oxidative stress status assessed by an increase of malondialdehyde (MDA) level and depletion of antioxidant enzyme activities as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx). Castor oil also increased gastric and intestinal mucosa hydrogen peroxide (H2O2) and free iron levels. Importantly, we showed that chamomile pre-treatment abrogated all these biochemical alterations. CONCLUSION These findings suggested that chamomile extract had a potent antidiarrheal and antioxidant properties in rats confirming their use in traditional medicine.
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Affiliation(s)
- Hichem Sebai
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia; Laboratoire de Nutrition et Physiologie Animale, Institut Supérieur de Biotechnologie de Béja, Avenue Habib Bourguiba, B.P., 382-9000 Béja, Tunisia.
| | - Mohamed-Amine Jabri
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia; Laboratoire de Nutrition et Physiologie Animale, Institut Supérieur de Biotechnologie de Béja, Avenue Habib Bourguiba, B.P., 382-9000 Béja, Tunisia
| | - Abdelaziz Souli
- Laboratoire de Nutrition et Physiologie Animale, Institut Supérieur de Biotechnologie de Béja, Avenue Habib Bourguiba, B.P., 382-9000 Béja, Tunisia
| | - Kais Rtibi
- Laboratoire de Nutrition et Physiologie Animale, Institut Supérieur de Biotechnologie de Béja, Avenue Habib Bourguiba, B.P., 382-9000 Béja, Tunisia
| | - Slimen Selmi
- Laboratoire de Nutrition et Physiologie Animale, Institut Supérieur de Biotechnologie de Béja, Avenue Habib Bourguiba, B.P., 382-9000 Béja, Tunisia
| | - Olfa Tebourbi
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia
| | - Jamel El-Benna
- INSERM U773 Centre de Recherche Biomédicale, Faculté de Médecine X. Bichat, 75018 Paris, France
| | - Mohsen Sakly
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia
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High-fat diet induced an oxidative stress in white adipose tissue and disturbed plasma transition metals in rat: prevention by grape seed and skin extract. J Physiol Sci 2013; 63:445-55. [DOI: 10.1007/s12576-013-0283-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 07/22/2013] [Indexed: 12/22/2022]
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Grape seed and skin extract protects against acute chemotherapy toxicity induced by doxorubicin in rat heart. Cardiovasc Toxicol 2013; 12:158-65. [PMID: 22290400 DOI: 10.1007/s12012-012-9155-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Doxorubicin (Dox), an antitumor anthracycline antibiotic, plays a key role in the treatment of many neoplastic diseases. However, its chronic administration induces cardiomyopathy. Increased oxidative stress is a major factor implicated in Dox-induced cardiotoxicity. We hypothesized that a pre-treatment with grape seed and skin extract (GSE), commonly used as an antioxidant agent, may alleviate this cardiotoxicity. Rats were treated with GSE (500 mg/kg bw) by intraperitoneal injection during 8 days. On the 4th day, rats were administered a single dose of Dox (20 mg/kg). At the end of the treatment, their hearts were Langendorff-perfused, subjected to ischemia/reperfusion (I/R) injury, and left ventricular functions as heart rate and developed pressure measured. Hearts were also used to determine free iron, H2O2, Ca2+, lipoperoxidation, carbonylation and antioxidant enzymes such as superoxide dismutase (SOD), catalase and peroxidase. Doxorubicin drastically affected heart activity as evidenced after I/R experiments. This effect was associated with an increase in heart free iron and a decrease in Ca2+ concentrations. This effect may have contributed to oxidative stress as assessed by high lipoperoxidation and carbonylation level. GSE counteracted Dox-induced disturbances of hemodynamic parameters, alleviated oxidative stress as assessed by normalized iron and Ca2+ levels and increased SOD activity especially the Mn isoform.
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Charradi K, Elkahoui S, Karkouch I, Limam F, Hamdaoui G, Hassine FB, El May MV, El May A, Aouani E. Grape seed and skin extract alleviates high-fat diet-induced renal lipotoxicity and prevents copper depletion in rat. Appl Physiol Nutr Metab 2013; 38:259-67. [DOI: 10.1139/apnm-2012-0416] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Obesity is a public health problem that contributes to morbidity and mortality from diabetes, heart disease, stroke, and cancers. The purpose of this investigation was to analyse the link between obesity-induced oxidative stress, renal steatosis, and kidney dysfunction, as well as the protective effect of grape seed and skin extract. Rats were fed a standard diet or a high-fat diet for 6 weeks and were either treated or not treated with grape seed and skin extract. Fat-induced oxidative stress was evaluated in the kidney with a special emphasis on transition metals. High-fat diet induced triglyceride deposition and disturbances in kidney function parameters, which are linked to an oxidative stress status and depletion of copper from the kidney. Grape seed and skin extract abrogated almost all fat-induced kidney disturbances. Grape seed and skin extract exerted potential protection against fat-induced kidney lipotoxicity and should find potential application in other kidney-related diseases.
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Affiliation(s)
- Kamel Charradi
- Laboratoire des Substances Bioactives (LSBA), Centre de Biotechnologie de Borj Cedria, BP-901, 2050 Hammam-Lif, Tunisie
- Université de Carthage, Faculté des Sciences de Bizerte, 7021 Jarzouna, Tunisie
| | - Salem Elkahoui
- Laboratoire des Substances Bioactives (LSBA), Centre de Biotechnologie de Borj Cedria, BP-901, 2050 Hammam-Lif, Tunisie
| | - Ines Karkouch
- Laboratoire des Substances Bioactives (LSBA), Centre de Biotechnologie de Borj Cedria, BP-901, 2050 Hammam-Lif, Tunisie
| | - Ferid Limam
- Laboratoire des Substances Bioactives (LSBA), Centre de Biotechnologie de Borj Cedria, BP-901, 2050 Hammam-Lif, Tunisie
| | - Ghaith Hamdaoui
- Laboratoire des Substances Bioactives (LSBA), Centre de Biotechnologie de Borj Cedria, BP-901, 2050 Hammam-Lif, Tunisie
| | - Fethy Ben Hassine
- Laboratoire de Biochimie, Polyclinique de la CNSS d'El Khadra, Avenue Zobeir Ibn El Awam 1003 Cité El Khadra Tunis, Tunisie
| | | | - Ahmed El May
- Unité de recherche no. 01/UR/07-08, Faculty of Medicine of Tunis, Tunisia
| | - Ezzedine Aouani
- Laboratoire des Substances Bioactives (LSBA), Centre de Biotechnologie de Borj Cedria, BP-901, 2050 Hammam-Lif, Tunisie
- Université de Carthage, Faculté des Sciences de Bizerte, 7021 Jarzouna, Tunisie
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Wheeler HE, Dolan ME. Lymphoblastoid cell lines in pharmacogenomic discovery and clinical translation. Pharmacogenomics 2012; 13:55-70. [PMID: 22176622 DOI: 10.2217/pgs.11.121] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The ability to predict how an individual patient will respond to a particular treatment is the ambitious goal of personalized medicine. The genetic make up of an individual has been shown to play a role in drug response. For pharmacogenomic studies, human lymphoblastoid cell lines (LCLs) comprise a useful model system for identifying genetic variants associated with pharmacologic phenotypes. The availability of extensive genotype data for many panels of LCLs derived from individuals of diverse ancestry allows for the study of genetic variants contributing to interethnic and interindividual variation in susceptibility to drugs. Many genome-wide association studies for drug-induced phenotypes have been performed in LCLs, often incorporating gene-expression data. LCLs are also being used in follow-up studies to clinical findings to determine how an associated variant functions to affect phenotype. This review describes the most recent pharmacogenomic findings made in LCLs, including the translation of some findings to clinical cohorts.
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Affiliation(s)
- Heather E Wheeler
- Section of Hematology/Oncology, Department of Medicine, 900 East 57th St, University of Chicago, Chicago, IL 60637, USA
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Hamlaoui-Gasmi S, Mokni M, Limam N, N’guessan P, Carrier A, Limam F, Amri M, Aouani E, Marzouki L. Grape seed and skin extract mitigates garlic-induced oxidative stress in rat liver. Can J Physiol Pharmacol 2012; 90:547-56. [DOI: 10.1139/y2012-025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Garlic is a commonly used spice in folk medicine that can exert adverse health effects when given at a high dose. Grape seed and skin extract (GSSE) exhibits a variety of beneficial effects even at a high dose. In the present study we evaluated the toxicity of high-dose garlic treatment on liver and the protective effect of GSSE. Rats were intraperitoneally administered either with garlic extract (5 g·(kg body weight)–1) or GSSE (500 mg·(kg body weight)–1) or a combination of garlic and GSSE at the same doses daily for 1 month. Plasma and hepatic levels of cholesterol, triacylglycerol, and transaminases and liver antioxidant status were evaluated. Data showed that a high garlic dose induced liver toxicity and a pro-oxidative status characterized by increased malondialdehyde and decreased antioxidant enzyme activities as catalase, peroxidase, and superoxide dismutase. Garlic increased intracellular H2O2but decreased free iron and Ca2+. GSSE alone or in co-treatment with garlic had the reverse effect and counteracted almost all garlic-induced deleterious impacts to near control levels. In conclusion, a high garlic dose induced a pro-oxidative state characterized by the Fenton reaction between H2O2and free iron, inducing Ca2+depletion, while GSSE exerted antioxidant properties and Ca2+repletion.
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Affiliation(s)
- Sonia Hamlaoui-Gasmi
- Laboratoire de neurophysiologie fonctionnelle et pathologies, Département des sciences biologiques, Faculté des sciences de Tunis, Campus Universitaire El Manar II-2092 Tunis, Tunisie
| | - Meherzia Mokni
- Laboratoire de neurophysiologie fonctionnelle et pathologies, Département des sciences biologiques, Faculté des sciences de Tunis, Campus Universitaire El Manar II-2092 Tunis, Tunisie
| | - Nadia Limam
- Laboratoire de neurophysiologie fonctionnelle et pathologies, Département des sciences biologiques, Faculté des sciences de Tunis, Campus Universitaire El Manar II-2092 Tunis, Tunisie
| | - Prudence N’guessan
- INSERM, U624 « Stress cellulaire », Case 915 Parc Scientifique de Luminy, 13288 Marseille CEDEX 9, France
| | - Alice Carrier
- INSERM, U624 « Stress cellulaire », Case 915 Parc Scientifique de Luminy, 13288 Marseille CEDEX 9, France
| | - Ferid Limam
- Laboratoire des substances bioactives, Centre de biotechnologie, Technopole Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunisie
| | - Mohamed Amri
- Laboratoire de neurophysiologie fonctionnelle et pathologies, Département des sciences biologiques, Faculté des sciences de Tunis, Campus Universitaire El Manar II-2092 Tunis, Tunisie
| | - Ezzedine Aouani
- Laboratoire des substances bioactives, Centre de biotechnologie, Technopole Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunisie
| | - Lamjed Marzouki
- Laboratoire de neurophysiologie fonctionnelle et pathologies, Département des sciences biologiques, Faculté des sciences de Tunis, Campus Universitaire El Manar II-2092 Tunis, Tunisie
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Sebai H, Sani M, Aouani E, Ghanem-Boughanmi N. Cardioprotective effect of resveratrol on lipopolysaccharide-induced oxidative stress in rat. Drug Chem Toxicol 2011; 34:146-50. [PMID: 21314464 DOI: 10.3109/01480545.2010.494666] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Lipopolysaccharide (LPS) is a glycolipid component of the cell wall of Gram-negative bacteria, which induces a deleterious effect on several organs, including the heart, eventually leading to septic shock and death. Endotoxemia-induced cardiotoxicity is characterized by disturbed intracellular redox balance, excessive reactive oxygen species (ROS) accumulation, inducing DNA, protein, and membrane lipid damage. Resveratrol (trans-3,5,4' trihydroxystilbene; RVT) is a phytoalexin polyphenol that exhibits antioxidant and -inflammatory properties. We investigated the putative effect of a subacute treatment with this natural compound on LPS-induced cardiotoxicity in the rat. We found that resveratrol counteracted LPS-induced lipoperoxidation and decreased superoxide dismutase (SOD) activity, but had no effect on the LPS-induced decrease in catalase (CAT) nor on the increase in peroxidase (POD) activity. Resveratrol also reversed LPS-induced myocardial nitric oxide (NO) elevation. More important, LPS-induced iron depletion from plasma to the myocardial compartment was abolished upon resveratrol treatment. All these data suggest that resveratrol is capable of alleviating LPS-induced cardiotoxicity, and that its mode of action may involve iron-shuttling proteins.
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Affiliation(s)
- Hichem Sebai
- Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, Zarzouna, Tunisie.
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Grape Seed Extract Alleviates High-Fat Diet-Induced Obesity and Heart Dysfunction by Preventing Cardiac Siderosis. Cardiovasc Toxicol 2011; 11:28-37. [DOI: 10.1007/s12012-010-9101-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Kell DB. Towards a unifying, systems biology understanding of large-scale cellular death and destruction caused by poorly liganded iron: Parkinson's, Huntington's, Alzheimer's, prions, bactericides, chemical toxicology and others as examples. Arch Toxicol 2010; 84:825-89. [PMID: 20967426 PMCID: PMC2988997 DOI: 10.1007/s00204-010-0577-x] [Citation(s) in RCA: 286] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 07/14/2010] [Indexed: 12/11/2022]
Abstract
Exposure to a variety of toxins and/or infectious agents leads to disease, degeneration and death, often characterised by circumstances in which cells or tissues do not merely die and cease to function but may be more or less entirely obliterated. It is then legitimate to ask the question as to whether, despite the many kinds of agent involved, there may be at least some unifying mechanisms of such cell death and destruction. I summarise the evidence that in a great many cases, one underlying mechanism, providing major stresses of this type, entails continuing and autocatalytic production (based on positive feedback mechanisms) of hydroxyl radicals via Fenton chemistry involving poorly liganded iron, leading to cell death via apoptosis (probably including via pathways induced by changes in the NF-κB system). While every pathway is in some sense connected to every other one, I highlight the literature evidence suggesting that the degenerative effects of many diseases and toxicological insults converge on iron dysregulation. This highlights specifically the role of iron metabolism, and the detailed speciation of iron, in chemical and other toxicology, and has significant implications for the use of iron chelating substances (probably in partnership with appropriate anti-oxidants) as nutritional or therapeutic agents in inhibiting both the progression of these mainly degenerative diseases and the sequelae of both chronic and acute toxin exposure. The complexity of biochemical networks, especially those involving autocatalytic behaviour and positive feedbacks, means that multiple interventions (e.g. of iron chelators plus antioxidants) are likely to prove most effective. A variety of systems biology approaches, that I summarise, can predict both the mechanisms involved in these cell death pathways and the optimal sites of action for nutritional or pharmacological interventions.
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Affiliation(s)
- Douglas B Kell
- School of Chemistry and the Manchester Interdisciplinary Biocentre, The University of Manchester, Manchester M1 7DN, UK.
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Sebai H, Gadacha W, Sani M, Aouani E, Ghanem-Boughanmi N, Ben-Attia M. Protective effect of resveratrol against lipopolysaccharide-induced oxidative stress in rat brain. Brain Inj 2010; 23:1089-94. [PMID: 19891535 DOI: 10.3109/02699050903379370] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PRIMARY OBJECTIVE To study the protective effect of resveratrol on endotoxemia-induced neurotoxicity. METHODS Rats were pre-treated during 7 days with 20 mg kg(-1) body weight (b.w.) resveratrol and challenged with a single dose of lipopolysaccharide (LPS: 8 mg kg(-1) b.w.) for 24 hours. Brains were harvested to determine LPS-induced lipoperoxidation level, antioxidant enzyme activities, nitric monoxide (NO) and iron distribution as well as the impact of resveratrol on these parameters. RESULTS Resveratrol counteracted LPS-induced brain malondialdehyde (MDA) level and antioxidant enzyme activities depletion as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD). Resveratrol also reversed LPS-induced brain and plasma NO elevation as well as iron sequestration from plasma to brain compartment. CONCLUSION The data suggest that resveratrol is capable of alleviating LPS-induced neurotoxicity by a mechanism that may involve iron shuttling proteins.
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Affiliation(s)
- Hichem Sebai
- Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, Zarzouna, Tunisie
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Sebai H, Sani M, Yacoubi MT, Aouani E, Ghanem-Boughanmi N, Ben-Attia M. Resveratrol, a red wine polyphenol, attenuates lipopolysaccharide-induced oxidative stress in rat liver. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2010; 73:1078-1083. [PMID: 20089305 DOI: 10.1016/j.ecoenv.2009.12.031] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 12/24/2009] [Accepted: 12/29/2009] [Indexed: 05/28/2023]
Abstract
Lipopolysaccharide (LPS) is a glycolipid component of the cell wall of gram-negative bacteria inducing deleterious effects on several organs including the liver and eventually leading to septic shock and death. Endotoxemia-induced hepatotoxicity is characterized by disturbed intracellular redox balance, excessive reactive oxygen species (ROS) accumulation inducing DNA, proteins and membrane lipid damages. Resveratrol (trans-3,5,4' trihydroxystilbene) is a phytoalexin polyphenol exhibiting antioxidant and anti-inflammatory properties. In this study, we investigated the effect of subacute pre-treatment with this natural compound on LPS-induced hepatotoxicity in rat. Resveratrol counteracted LPS-induced lipoperoxidation and depletion of antioxidant enzyme activities as superoxide dismutase (SOD) and catalase (CAT) but slightly glutathione peroxidase (GPx) activity. The polyphenol also abrogated LPS-induced liver and plasma nitric oxide (NO) elevation and attenuated endotoxemia-induced hepatic tissue injury. Importantly resveratrol treatment abolished LPS-induced iron sequestration from plasma to liver compartment. Our data suggest that resveratrol is capable of alleviating LPS-induced hepatotoxicity and that its mode of action may involve differential iron compartmentalization via iron shuttling proteins.
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Affiliation(s)
- Hichem Sebai
- Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisie.
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67
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Sebai H, Sani M, Ghanem-Boughanmi N, Aouani E. Prevention of lipopolysaccharide-induced mouse lethality by resveratrol. Food Chem Toxicol 2010; 48:1543-9. [PMID: 20304025 DOI: 10.1016/j.fct.2010.03.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 03/06/2010] [Accepted: 03/15/2010] [Indexed: 01/22/2023]
Abstract
The present study was undertaken to determine whether subacute treatment with resveratrol (RVT) protects mice against lipopolysaccharide (LPS)-induced oxidative stress and mortality as well as the mechanism involved in such protection. Mice were divided into three groups: control, LPS and LPS+RVT. Animals were pre-treated with RVT during 7 days. The survival rate was monitored over 48 h after LPS administration. Survival animals were sacrificed, their kidney, liver and brain homogenized for malondialdehyde (MDA), catalase (CAT) activity, free iron and nitric oxide (NO) determination. Plasma was also processed for transaminases, creatinine, urea, NO and iron measurement. Pre-treatment with resveratrol greatly improved the survival rate of LPS-treated mice. Resveratrol counteracted LPS-induced tissue lipoperoxidation and catalase activity depletion. The polyphenol abrogated LPS-induced liver and kidney dysfunction as increased creatinine and urea as well as transaminases activities. In addition, pre-treatment with resveratrol abrogated LPS-induced tissues and plasma NO elevation and iron sequestration from plasma to tissue compartment. These data suggest that resveratrol prevents LPS-induced lethality and that its mode of action may involve differential iron deposition via iron shuttling proteins.
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Affiliation(s)
- Hichem Sebai
- Laboratoire de Biosurveillance de l'Environnement, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Zarzouna, Tunisia.
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68
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The Impact of Desferrioxamine Postallogeneic Hematopoietic Cell Transplantation in Relapse Incidence and Disease-Free Survival: A Retrospective Analysis. Transplantation 2010; 89:472-9. [DOI: 10.1097/tp.0b013e3181c42944] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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69
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Chelation of intracellular iron with the antifungal agent ciclopirox olamine induces cell death in leukemia and myeloma cells. Blood 2009; 114:3064-73. [PMID: 19589922 DOI: 10.1182/blood-2009-03-209965] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Off-patent drugs with previously unrecognized anticancer activity could be rapidly repurposed for this new indication. To identify such compounds, we conducted 2 independent cell-based chemical screens and identified the antimicrobial ciclopirox olamine (CPX) in both screens. CPX decreased cell growth and viability of malignant leukemia, myeloma, and solid tumor cell lines as well as primary AML patient samples at low-micromolar concentrations that appear pharmacologically achievable. Furthermore, oral CPX decreased tumor weight and volume in 3 mouse models of leukemia by up to 65% compared with control without evidence of weight loss or gross organ toxicity. In addition, oral CPX prevented the engraftment of primary AML cells in nonobese diabetic/severe combined immunodeficiency mouse models, thereby establishing its ability to target leukemia stem cells. Mechanistically, CPX bound intracellular iron, and this intracellular iron chelation was functionally important for its cytotoxicity. By electron paramagnetic resonance, CPX inhibited the iron-dependent enzyme ribonucleotide reductase at concentrations associated with cell death. Thus, in summary, CPX has previously unrecognized anticancer activity at concentrations that are pharmacologically achievable. Therefore, CPX could be rapidly repurposed for the treatment of malignancies, including leukemia and myeloma.
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70
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Addressing the problem of cationic lipid-mediated toxicity: the magnetoliposome model. Biomaterials 2009; 30:3691-701. [PMID: 19371948 DOI: 10.1016/j.biomaterials.2009.03.040] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Accepted: 03/21/2009] [Indexed: 11/21/2022]
Abstract
The high biocompatibility and versatile nature of liposomes made these particles keystone components in many hot-topic research areas. For transfection and cell labelling purposes, synthetic cationic lipids are often added, but in most studies, little attention has been paid to their cytotoxic effects. In the present work, cationic magnetoliposomes (MLs), i.e. iron oxide cores enwrapped by a phospholipid bilayer (dimyristoylphosphatidylcholine or sphingomyelin) doped with cationic lipids (1,2-distearoyl-3-trimethylammonium propane), serve as a model to examine cationic lipid toxicity. Mechanisms of cytotoxic effects were found to be either dependent or independent of actual particle internalisation according to data obtained in the absence or presence of several endocytosis inhibitors. The former seem to be caused by the generation of reactive oxygen species (ROS) leading to a Ca2+ influx at high ROS levels. The latter are due to a destabilisation of the cell plasma membrane upon transfer of the cationic lipid from the ML bilayer into the plasma membrane. However, these adverse effects can be diminished by the use of a ROS scavenger, a Ca(2+)-channel blocker or by modulating the liposome size, lipid bilayer constitution or by stabilising the membrane by anchoring it on a solid core. Careful attention must be paid in terms of assessing cell viability as the effects are highly time dependent and the data suggest the incompatibility of using the well-known MTT assay when high levels of ROS species are generated.
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71
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Sebai H, Ben-Attia M, Sani M, Aouani E, Ghanem-Boughanmi N. Protective effect of resveratrol on acute endotoxemia-induced nephrotoxicity in rat through nitric oxide independent mechanism. Free Radic Res 2009; 42:913-20. [PMID: 19031312 DOI: 10.1080/10715760802555577] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Lipopolysaccharide (LPS) is a glycolipid component of the cell wall of gram negative bacteria inducing deleterious effects on the kidney. Endotoxemia-induced nephrotoxicity is characterized by disturbed intracellular redox balance and reactive oxygen species (ROS) accumulation leading to DNA, proteins and membrane lipid damages. Resveratrol (trans-3,5,4'-trihydroxystilbene) is a polyphenol displaying antioxidant and anti-inflammatory properties. This study investigated its effects on LPS-induced nephrotoxicity in rats. Resveratrol counteracted all LPS-induced changes in renal haemodynamic parameters. In the kidney resveratrol abrogated LPS-induced lipoperoxidation and antioxidant enzyme activities depletion as superoxide dismutase (SOD) and catalase (CAT) but not peroxidase (POD) activity. LPS increased plasma and urine nitric oxide (NO) level and resveratrol reversed them. More importantly, LPS-induced iron mobilization from plasma to kidney, which was also abolished by resveratrol treatment. All these results suggest that resveratrol exerted strong antioxidant properties against LPS-induced nephrotoxicity and that its mode of action seemed to involve iron shuttling proteins.
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Affiliation(s)
- Hichem Sebai
- UR Ethnobotanie & Stress Oxydant, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Zarzouna, Tunisie
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72
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Population-specific genetic variants important in susceptibility to cytarabine arabinoside cytotoxicity. Blood 2008; 113:2145-53. [PMID: 19109566 DOI: 10.1182/blood-2008-05-154302] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cytarabine arabinoside (ara-C) is an antimetabolite used to treat hematologic malignancies. Resistance is a common reason for treatment failure with adverse side effects contributing to morbidity and mortality. Identification of genetic factors important in susceptibility to ara-C cytotoxicity may allow for individualization of treatment. We used an unbiased whole-genome approach using lymphoblastoid cell lines derived from persons of European (CEU) or African (YRI) ancestry to identify these genetic factors. We interrogated more than 2 million single nucleotide polymorphisms (SNPs) for association with susceptibility to ara-C and narrowed our focus by concentrating on SNPs that affected gene expression. We identified a unique pharmacogenetic signature consisting of 4 SNPs explaining 51% of the variability in sensitivity to ara-C among the CEU and 5 SNPs explaining 58% of the variation among the YRI. Population-specific signatures were secondary to either (1) polymorphic SNPs in one population but monomorphic in the other, or (2) significant associations of SNPs with cytotoxicity or gene expression in one population but not the other. We validated the gene expression-cytotoxicity relationship for a subset of genes in a separate group of lymphoblastoid cell lines. These unique genetic signatures comprise novel genes that can now be studied further in functional studies.
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73
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Sebai H, Ben-Attia M, Sani M, Aouani E, Ghanem-Boughanmi N. Protective effect of resveratrol in endotoxemia-induced acute phase response in rats. Arch Toxicol 2008; 83:335-40. [PMID: 18754105 DOI: 10.1007/s00204-008-0348-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Accepted: 08/07/2008] [Indexed: 01/12/2023]
Abstract
Lipopolysaccharide (LPS), a glycolipid component of the cell wall of gram-negative bacteria can elicit a systemic inflammatory process leading to septic shock and death. Acute phase response is characterized by fever, leucocytosis, thrombocytopenia, altered metabolic responses and redox balance by inducing excessive reactive oxygen species (ROS) generation. Resveratrol (trans-3,5,4' trihydroxystilbene) is a natural polyphenol exhibiting antioxidant and anti-inflammatory properties. We investigated the protective effect of resveratrol on endotoxemia-induced acute phase response in rats. When acutely administered by i.p. route, resveratrol (40 mg/kg b.w.) counteracted the effect of a single injection of LPS (4 mg/kg b.w.) which induced fever, a decrease in white blood cells (WBC) and platelets (PLT) counts. When i.p. administered during 7 days at 20 mg/kg per day (subacute treatment), resveratrol abrogated LPS-induced erythrocytes lipoperoxidation and catalase (CAT) activity depression to control levels. In the plasma compartment, LPS increased malondialdehyde (MDA) via nitric monoxide (NO) elevation and decreased iron level. All these deleterious LPS effects were reversed by a subacute resveratrol pre-treatment via a NO independent way. Resveratrol exhibited potent protective effect on LPS-induced acute phase response in rats.
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Affiliation(s)
- Hichem Sebai
- Département des Sciences de la Vie, Faculté des Sciences de Bizerte, UR Ethnobotanie & Stress Oxydant, 7021 Zarzouna, Tunisia
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74
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Abstract
Iron overload is characterised by excessive iron deposition and consequent injury and dysfunction of target organs, especially the heart, liver, anterior pituitary, pancreas and joints. Iron overload disorders are common worldwide and occur in most major race/ethnicity groups. Physiological mechanisms to excrete iron are very limited. Thus, all patients with iron overload need safe and effective treatment that is compatible with their co-existing medical conditions. Treatments for iron overload include phlebotomy and erythrocytapheresis that remove iron predominantly as haemoglobin, and chelation therapy with drugs that bind excess iron selectively and increase its excretion. The most important potential benefits of therapy are preventing deaths due to cardiac siderosis and hepatic cirrhosis. Preventing iron-related injury to endocrine organs is critical in children. Successful treatment or prevention of iron overload increases quality of life and survival in many patients. This article characterises the major categories of iron overload disorders, tabulates methods to evaluate and treat iron overload, and describes treatment options for iron overload disorders. Research needed to advance knowledge about treatment of iron overload is proposed.
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Affiliation(s)
- James C Barton
- Southern Iron Disorders Center, Birmingham, Alabama 35209, USA.
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75
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Devireddy LR, Gazin C, Zhu X, Green MR. A Cell-Surface Receptor for Lipocalin 24p3 Selectively Mediates Apoptosis and Iron Uptake. Cell 2005; 123:1293-305. [PMID: 16377569 DOI: 10.1016/j.cell.2005.10.027] [Citation(s) in RCA: 506] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Revised: 08/23/2005] [Accepted: 10/11/2005] [Indexed: 11/17/2022]
Abstract
The lipocalin mouse 24p3 has been implicated in diverse physiological processes, including apoptosis due to interleukin-3 (IL-3) deprivation and iron transport. Here we report cloning of the 24p3 cell-surface receptor (24p3R). Ectopic 24p3R expression confers on cells the ability to undergo either iron uptake or apoptosis, dependent upon the iron content of the ligand: Iron-loaded 24p3 increases intracellular iron concentration without promoting apoptosis; iron-lacking 24p3 decreases intracellular iron levels, which induces expression of the proapoptotic protein Bim, resulting in apoptosis. Intracellular iron delivery blocks Bim induction and suppresses apoptosis due to 24p3 addition or IL-3 deprivation. We find, unexpectedly, that the BCR-ABL oncoprotein activates expression of 24p3 and represses 24p3R expression, rendering BCR-ABL(+) cells refractory to secreted 24p3. By inhibiting BCR-ABL, imatinib induces 24p3R expression and, consequently, apoptosis. Our results reveal an unanticipated role for intracellular iron regulation in an apoptotic pathway relevant to BCR-ABL-induced myeloproliferative disease and its treatment.
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Affiliation(s)
- Laxminarayana R Devireddy
- Howard Hughes Medical Institute, Programs in Gene Function and Expression and Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
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76
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Baldi A, Lombardi D, Russo P, Palescandolo E, De Luca A, Santini D, Baldi F, Rossiello L, Dell'Anna ML, Mastrofrancesco A, Maresca V, Flori E, Natali PG, Picardo M, Paggi MG. Ferritin contributes to melanoma progression by modulating cell growth and sensitivity to oxidative stress. Clin Cancer Res 2005; 11:3175-83. [PMID: 15867210 DOI: 10.1158/1078-0432.ccr-04-0631] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Employing an in vitro model system of human melanoma progression, we previously reported ferritin light chain (L-ferritin) gene overexpression in the metastatic phenotype. Here, we attempted to characterize the role of ferritin in the biology of human melanoma and in the progression of this disease. EXPERIMENTAL DESIGN Starting from the LM human metastatic melanoma cell line, we engineered cell clones in which L-ferritin gene expression was down-regulated by the stable expression of a specific antisense construct. These cells were then assayed for their growth capabilities, chemoinvasive properties, and sensitivity to oxidative stress. Additionally, ferritin protein content in primary and metastatic human melanomas was determined by immunohistochemistry. RESULTS Artificial L-ferritin down-regulation in the LM cells strongly inhibited proliferation and chemoinvasion in vitro and cell growth in vivo. In addition, L-ferritin down-regulated cells displayed enhanced sensitivity to oxidative stress and to apoptosis. Concurrently, immunohistochemical analysis of a human melanoma tissue array revealed that ferritin expression level in metastatic lesions was significantly higher (P < 0.0001) than in primary melanomas. Furthermore, ferritin expression was constantly up-regulated in autologous lymph node melanoma metastases when compared with the respective primary tumors in a cohort of 11 patients. CONCLUSIONS These data suggest that high ferritin expression can enhance cell growth and improve resistance to oxidative stress in metastatic melanoma cells by interfering with their cellular antioxidant system. The potential significance of these findings deserves to be validated in a clinical setting.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Catalase/metabolism
- Cell Line, Tumor
- Cell Proliferation
- DNA, Antisense/genetics
- DNA, Antisense/metabolism
- DNA, Complementary/genetics
- Dose-Response Relationship, Drug
- Down-Regulation
- Fatty Acids, Unsaturated/metabolism
- Ferritins/analysis
- Ferritins/genetics
- Ferritins/physiology
- Gene Expression
- Humans
- Hydrogen Peroxide
- Immunohistochemistry
- Male
- Melanoma, Experimental/genetics
- Melanoma, Experimental/metabolism
- Melanoma, Experimental/pathology
- Mice
- Mice, Nude
- Neoplasm Metastasis
- Neoplasm Transplantation
- Oxidative Stress
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Reactive Oxygen Species/metabolism
- Superoxide Dismutase/metabolism
- Thiobarbituric Acid Reactive Substances/metabolism
- Transfection
- Transplantation, Heterologous
- Up-Regulation
- Vitamin E/metabolism
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Affiliation(s)
- Alfonso Baldi
- Laboratory "C," Department for the Development of Therapeutic Programs, Center for Experimental Research, Regina Elena Cancer Institute, Rome, Italy
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77
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Delgado-Cañedo A, Chies JAB, Nardi NB. Induction of fetal haemoglobin expression in erythroid cells – A model based on iron availability signalling. Med Hypotheses 2005; 65:932-6. [PMID: 16054772 DOI: 10.1016/j.mehy.2005.02.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2005] [Accepted: 02/10/2005] [Indexed: 11/20/2022]
Abstract
The K562 cell line has erythroid origin and is used for the study of fetal haemoglobin (HbF) production after treatment with several drugs, such as hydroxyurea, cisplatin and cytosine arabinoside (Ara C). It represents an important tool for the study of cancer differentiation therapy and treatment of thalassaemia and sickle cell disease. Although subject to intense research, the mechanisms involved in the induction of HbF are not fully established, and the regulation of several genes and signalling pathways has been proposed. Using the methodology of differential display, we investigated the changes in gene expression in K562 cells treated with doxorubicin and aclarubicin, which induce HbF expression and cell cycle arrest. Several genes were shown to present differential expression patterns, many of them related to the iron signalling pathway. Particular attention was given to Ndrg1, expressed as early as 24 h after treatment, which can be regulated by iron and is involved with blocking of the cell cycle. A review of the literature shows that, similar to doxorubicin and aclarubicin, most of the drugs used to induce HbF present some kind of effect on the iron signalling pathway, activating in the cells the machinery necessary for the incorporation of extracellular iron. Considering these results, as well as the fact that in erythroid cells the synthesis of haemoglobin is of vital importance, we propose that the production of fetal haemoglobin in erythroid cells is highly dependent on the iron signalling pathway.
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Affiliation(s)
- A Delgado-Cañedo
- Genetics Department, Universidade Federal do Rio Grande do Sul, Av Bento Goncalves 9500, 91540-000 Porto Alegre, RS, Brazil
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78
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Fassl S, Leisser C, Huettenbrenner S, Maier S, Rosenberger G, Strasser S, Grusch M, Fuhrmann G, Leuhuber K, Polgar D, Stani J, Tichy B, Nowotny C, Krupitza G. Transferrin ensures survival of ovarian carcinoma cells when apoptosis is induced by TNFα, FasL, TRAIL, or Myc. Oncogene 2003; 22:8343-55. [PMID: 14614458 DOI: 10.1038/sj.onc.1207047] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The activation of Myc induces apoptosis of human ovarian adenocarcinoma N.1 cells when serum factors are limited. However, the downstream mechanism that is triggered by Myc is unknown. Myc-activation and treatment with the proapoptotic ligands TNFalpha, FasL, and TRAIL induced H-ferritin expression under serum-deprived conditions. H-ferritin chelates intracellular iron and also intracellular iron sequestration by deferoxamine-induced apoptosis of N.1 cells. Supplementation of serum-free medium with holo-transferrin blocked apoptosis of N.1 cells that was induced by Myc-activation or by treatment with TNFalpha, FasL, and TRAIL, whereas apotransferrin did not prevent apoptosis. This suggests that intracellular iron depletion was a trigger for apoptosis and that transferrin-bound iron rescued N.1 cells. Furthermore, apoptosis of primary human ovarian carcinoma cells, which was induced by TNFalpha, FasL, and TRAIL, was also inhibited by holo-transferrin. The data suggest that Myc-activation, FasL, TNFalpha, and TRAIL disturbed cellular iron homeostasis, which triggered apoptosis of ovarian carcinoma cells and that transferrin iron ensured survival by re-establishing this homeostasis.
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Affiliation(s)
- Sandra Fassl
- Institute of Clinical Pathology, University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
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79
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Kim BS, Yoon KH, Oh HM, Choi EY, Kim SW, Han WC, Kim EA, Choi SC, Kim TH, Yun KJ, Kim EC, Lyou JH, Nah YH, Chung HT, Cha YN, Jun CD. Involvement of p38 MAP kinase during iron chelator-mediated apoptotic cell death. Cell Immunol 2002; 220:96-106. [PMID: 12657244 DOI: 10.1016/s0008-8749(03)00031-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Iron is an essential element for the neoplastic cell growth, and iron chelators have been tested for their potential anti-proliferative and cytotoxic effects. To determine the mechanism of cell death induced by iron chelators, we explored the pathways of the three structurally related mitogen-activated protein (MAP) kinase subfamilies during apoptosis induced by iron chelators. We report that the chelator deferoxamine (DFO) strongly activates both p38 MAP kinase and extracellular signal-regulated kinase (ERK) at an early stage of incubation, but slightly activates c-Jun N-terminal kinase/stress-activated protein kinase (JNK/SAPK) at a late stage of incubation. Among three MAP kinase blockers used, however, the selective p38 MAP kinase inhibitor SB203580 could only protect HL-60 cells from chelator-induced cell death, indicating that p38 MAP kinase serves as a major mediator of apoptosis induced by iron chelator. DFO also caused release of cytochrome c from mitochondria and induced activation of caspase 3 and caspase 8. Interestingly, treatment of HL-60 cells with SB203580 greatly abolished cytochrome c release, and activation of caspase 3 and caspase 8. Collectively, the current study reveals that p38 MAP kinase plays an important role in iron chelator-mediated cell death of HL-60 cells by activating downstream apoptotic cascade that executes cell death pathway.
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Affiliation(s)
- Beom-Su Kim
- Department of Microbiology and Immunology, Wonkwang Medical Science Institute, Iksan, Chonbuk 570-749, South Korea
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80
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Dobsák P, Siegelova J, Wolf JE, Rochette L, Eicher JC, Vasku J, Kuchtickova S, Horky M. Prevention of apoptosis by deferoxamine during 4 hours of cold cardioplegia and reperfusion: in vitro study of isolated working rat heart model. PATHOPHYSIOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY FOR PATHOPHYSIOLOGY 2002; 9:27. [PMID: 12385962 DOI: 10.1016/s0928-4680(02)00054-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
INTRODUCTION: Heart transplantation is often accompanied by multiple functional alterations, especially in reperfusion period. These are probably related to the reactive oxygen species (ROS) formation catalyzed by transition metals such as iron and copper, and thus the preservation time of the donor hearts is limited. Metabolic protection of the heart grafts is a permanent objective of numerous experiments. Recently, an iron chelator deferoxamine (DFX) was proposed as antioxidant agent for storage solutions in heart grafts. Oxidative stress is also known to mediate the apoptotic cell death in different tissues during ischemia-reperfusion. METHODS: The aim of this study was to evaluate a possible role of DFX in prevention of apoptosis using in vitro model of isolated working rat heart and cold cardioplegia. Two groups of rats were evaluated: (a) group 'DFX 50 &mgr;M' (n=8) and (b) group 'controls' (n=8). Isolated rat hearts were perfused by Krebs-Henseleit buffer (KHB) for 30 min, arrested by cardioplegic solution and stored for 4 h in B21 solution at 4 degrees C. Then, the hearts were reperfused by KHB for 45 min. DFX was added to the cardioplegic and storage solutions and in KHB in reperfusion. Basic functional parameters were evaluated: coronary, aortic, cardiac outputs and heart rate. At the end of reperfusion period a tissue samples were taken from left ventricle and in situ detection of apoptotic cells was performed using an ApopTag kit. RESULTS: DFX significantly reduced the occurrence of apoptotic cells in myocardium (*P<0.05). Hearts treated by 50 &mgr;M of DFX showed also a better recovery of the cardiac output (***P<0.001). The presence of DFX in KHB, cardioplegic and storage solution reduced also the incidence of postischemic arrhythmias and fibrillation's but without statistical significance. CONCLUSIONS: Our results give evidence of the protective potential of DFX during cold ischemia and reperfusion, presumably due to its antioxidant properties. The significant decrease of apoptosis in hearts treated by DFX could be considered as an existence of close link between oxidative stress and apoptotic death promotion in ischemia-reperfusion injury.
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Affiliation(s)
- Petr Dobsák
- Clinic of Functional Diagnostics and Rehabilitation (KFDR), St. Anna Faculty Hospital, Masaryk University of Brno, Pckarská 53, 656 91, Brno, Czech Republic
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81
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Richard D, Morjani H, Chénais B. Free radical production and labile iron pool decrease triggered by subtoxic concentration of aclarubicin in human leukemia cell lines. Leuk Res 2002; 26:927-31. [PMID: 12163054 DOI: 10.1016/s0145-2126(02)00030-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aclarubicin (ACLA), which belongs to the antracycline class of antineoplasic agents, has been demonstrated as a differentiating agent for a broad range of human solid tumors and leukemia. By using dihydroethidium as a fluorescent probe, we show the ability of subtoxic (i.e. differentiating) concentration of ACLA to generate reactive oxygen species in both K562 and HL-60 leukemia cell lines. Besides, we have used a calcein-based spectrofluorimetric assay to determine the influence of ACLA treatment on the cellular labile iron pool (LIP). In both cell lines, the LIP level was markedly decreased in the presence of ACLA. Nevertheless, whereas ACLA-induced differentiation was obviously ROS-dependent, the LIP decrease was rather ROS-independent.
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Affiliation(s)
- Doriane Richard
- Unité MéDIAN, CNRS FRE-2141, Faculté de Pharmacie, 51 rue Cognacq-Jay, Reims, France
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82
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Ferry-Dumazet H, Mamani-Matsuda M, Dupouy M, Belloc F, Thiolat D, Marit G, Arock M, Reiffers J, Mossalayi MD. Nitric oxide induces the apoptosis of human BCR-ABL-positive myeloid leukemia cells: evidence for the chelation of intracellular iron. Leukemia 2002; 16:708-15. [PMID: 11960353 DOI: 10.1038/sj.leu.2402404] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2001] [Accepted: 12/12/2001] [Indexed: 01/04/2023]
Abstract
Anti-leukemia activity of human macrophages involves the generation of nitric oxide (NO) derivatives. However, leukemic transformation may involve mechanisms that rescue cells from NO-mediated apoptosis. In the present work, we analyzed the effects of exogenous NO on the proliferation of BCR-ABL(+) chronic myelogenous leukemia (CML) cells. As normal leukocytes, the proliferation of leukemia cells was inhibited by SNAP (S-nitroso-N-acetyl-penicillamine), GEA (Oxatriazolium amino-chloride), and SIN-1 (Morpholino-sydnonimine), whereas SNP (sodium nitroprusside) had no effect on leukemia cell growth. SIN-1 induced higher anti-proliferation activity in BCR-ABL(+) cells, compared to normal hemopoietic cells. Inhibition of leukemia cell proliferation correlated with increased apoptosis and DEVDase activity. The simultaneous addition of exogenous iron reversed NO-mediated inhibition of cell growth, caspase activation and apoptosis in all BCR-ABL(+) cells tested. The quantification of intracellular iron levels in leukemia cells indicated that NO induced an early, dose-dependent decrease in ferric iron levels. Accordingly, elevation of intracellular iron protected leukemia cells from NO-mediated apoptosis. Together, the present work reveals the presence of an iron-dependant mechanism for leukemia cell rescue from NO-induced growth inhibition and apoptosis.
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Affiliation(s)
- H Ferry-Dumazet
- Bone Marrow Transplantation, CNRS UMR5540 and EA482, Bordeaux-2 University, Bordeaux, France
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83
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Kovár J, Valenta T, Stýbrová H. Differing sensitivity of tumor cells to apoptosis induced by iron deprivation in vitro. In Vitro Cell Dev Biol Anim 2001; 37:450-8. [PMID: 11573821 DOI: 10.1290/1071-2690(2001)037<0450:dsotct>2.0.co;2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We studied the sensitivity of tumor cells to the induction of apoptosis by iron deprivation. Iron deprivation was achieved by the employment of a defined iron-deficient culture medium. Mouse 38C13 cells and human Raji cells die within 48 and 96 h of incubation in iron-deficient medium, respectively. On the contrary, mouse EL4 cells and human HeLa cells are completely resistant to the induction of death under the same experimental arrangement. Deoxyribonucleic acid fragmentation analysis by agarose gel electrophoresis as well as flow cytometric analysis after propidium iodide staining detected in 38C13 and Raji cells, but not in EL4 and HeLa cells, changes characteristic to apoptosis. The 38C13 cells, sensitive to iron deprivation, also displayed a similar degree of sensitivity to apoptosis induction by thiol deprivation (achieved by 2-mercaptoethanol withdrawal from the culture medium) as well as by rotenone (50 nM), hydroxyurea (50 microM), methotrexate (20 nM), and doxorubicin (100 nM). Raji cells shared with 38C13 cells a sensitivity to rotenone, methotrexate, doxorubicin, and, to a certain degree, to hydroxyurea. However, Raji cells were completely resistant to thiol deprivation. EI4 and HeLa cells, resistant to iron deprivation, also displayed a greater degree of resistance to most of the other apoptotic stimuli than did their sensitive counterparts. We conclude that some tumor cells in vitro are sensitive to apoptosis induction by iron deprivation, while other tumor cells are resistant. All the tumors found to be sensitive to iron deprivation in this study (four cell lines) are of hematopoietic origin. The mechanism of resistance to apoptosis induction by iron deprivation differs from the mechanism of resistance to thiol deprivation.
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Affiliation(s)
- J Kovár
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague.
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84
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Caraglia M, Budillon A, Vitale G, Lupoli G, Tagliaferri P, Abbruzzese A. Modulation of molecular mechanisms involved in protein synthesis machinery as a new tool for the control of cell proliferation. EUROPEAN JOURNAL OF BIOCHEMISTRY 2000; 267:3919-36. [PMID: 10866791 DOI: 10.1046/j.1432-1327.2000.01465.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In the past years, the attention of scientists has focused mainly on the study of the genetic information and alterations that regulate eukaryotic cell proliferation and that lead to neoplastic transformation. All therapeutic strategies against cancer are, to date, directed at DNA either with cytotoxic drugs or gene therapy. Little or no interest has been aroused by protein synthesis mechanisms. However, an increasing body of data is emerging about the involvement of translational processes and factors in control of cell proliferation, indicating that protein synthesis can be an additional target for anticancer strategies. In this paper we review the novel insights on the biochemical and molecular events leading to protein biosynthesis and we describe their involvement in cell proliferation and tumorigenesis. A possible mechanistic explanation is given by the interactions that occur between protein synthesis machinery and the proliferative signal transduction pathways and that are therefore suitable targets for indirect modulation of protein synthesis. We briefly describe the molecular tools used to block protein synthesis and the attempts made at increasing their efficacy. Finally, we propose a new multimodal strategy against cancer based on the simultaneous intervention on protein synthesis and signal transduction.
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Affiliation(s)
- M Caraglia
- Dipartimento di Biochimica e Biofisica, Seconda Università di Napoli, Italy
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85
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Kovár J, Kemp JD. Unexpected effects of albumin on apoptosis induction by deferoxamine in vitro. In Vitro Cell Dev Biol Anim 2000; 36:151-2. [PMID: 10777053 DOI: 10.1290/1071-2690(2000)036<0151:ueoaoa>2.0.co;2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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86
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Fuhrmann G, Rosenberger G, Grusch M, Klein N, Hofmann J, Krupitza G. The MYC dualism in growth and death. Mutat Res 1999; 437:205-17. [PMID: 10592328 DOI: 10.1016/s1383-5742(99)00084-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Over-expression of the transcription factor c-Myc immortalizes primary cells and transforms in co-operation with activated ras. Therefore, c-myc is considered a proto-oncogene. Since its discovery c-Myc has been shown to render cells growth factor independent, accelerates passage through G1 of the cell cycle, inhibits differentiation and elicits apoptosis. Whereas the effects on immortalization, proliferation and inhibition of differentiation are in conceivable accordance with gain of function, as it is defined for a proto-oncogene, its pro-apoptotic activity disables a straight forward explanation of the physiological role of c-Myc and suggests a highly complex contribution during development. The recent accomplishments in c-Myc research shed some light on the difficile regulatory network which keeps check on c-Myc activity such as by binding to proteins some of which are transcription factors for non-c-Myc targets. Moreover, it was shown that genes are targeted by c-Myc depending on the sequence of flanking regions adjacent to the E-box or in dependence on the availability of binding partners which is most probably specific to the cellular context. Cdc25A and ornithine decarboxylase, both described to be c-Myc targets, have been brought forward as downstream effectors in the induction of proliferation under serum rich conditions, or in the induction of apoptosis when serum factors are limited. These genes seem to be regulated by c-Myc in a cell type-specific manner. H-ferritin, IRP2 and telomerase are the most recently discovered direct targets of c-Myc. The regulation of H-ferritin and IRP2 might explain the potential of c-Myc to promote proliferation and the regulation of telomerase could be responsible for the immortalizing properties of c-Myc. In the future, H-ferritin and telomerase have to be analyzed whether or not these genes are also Myc targets in other cell systems. Although the intense research efforts regarding the function of c-Myc last already two decades the role of this gene is still enigmatic.
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Affiliation(s)
- G Fuhrmann
- Institute of Clinical Pathology, University of Vienna, Währinger Gürtel 18-20, A-1090, Vienna, Austria
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87
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Pourzand C, Tyrrell RM. Apoptosis, the Role of Oxidative Stress and the Example of Solar UV Radiation. Photochem Photobiol 1999. [DOI: 10.1111/j.1751-1097.1999.tb08239.x] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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88
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Caraglia M, Tagliaferri P, Budillon A, Abbruzzese A. Post-translational modifications of eukaryotic initiation factor-5A (eIF-5A) as a new target for anti-cancer therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1999; 472:187-98. [PMID: 10736626 DOI: 10.1007/978-1-4757-3230-6_16] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Eukaryotic translation initiation factor 5A (eIF-5A) is the only cell protein that contains the unusual basic amino acid hypusine [N epsilon-(4-amino-2-hydroxybutyl)lysine]. Hypusine is formed by the transfer of the butylamine portion from spermidine to the epsilon-amino group of a specific lysine residue of eIF-5A precursor and the subsequent hydroxylation at carbon 2 of the incoming 4-aminobutyl moiety. Agents that reduce cell hypusine levels inhibit the growth of mammalian cells. These observations suggest that hypusine is crucial for proliferation and transformation of eukaryotic cells. Here we have studied whether the inhibition of hypusine synthesis can potentiate the anti-cancer activity of the anti-tumour agents interferon-alpha (IFN alpha) and cytosine arabinoside (ara-C). We have found that IFN alpha increased epidermal growth factor receptor (EGF-R) expression, but reduced S phase and proliferative marker expression in human epidermoid KB cells and that this effect was antagonised by epidermal growth factor (EGF). Growth inhibition induced by IFN alpha was paralleled by decreased hypusine synthesis and, when EGF counteracted anti-proliferative effects, a reconstitution of hypusine levels was recorded. We also studied the effects of IFN alpha on the cytotoxicity of the recombinant toxin TP40 which inhibits elongation factor 2, another step of protein synthesis, through EGF-R binding and internalisation; IFN alpha induced an about 27-fold increase of TP40 cytotoxicity in KB cells. Ara-C, another antineoplastic agent commonly used in haematologic malignancies, induced both apoptosis and iron depletion in human acute myeloid leukaemic cells. The combination of ara-C and of the iron chelator desferioxamine, a strong inhibitor of hypusine synthesis, had a synergistic activity on apoptosis in these cells. The data strongly suggest that the post-translational modifications of eIF-5A could be a suitable target for the potentiation of the activity of anti-cancer agents.
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Affiliation(s)
- M Caraglia
- Department of Biochemistry and Biophysics F. Cedrangolo, Second University of Naples, Italy
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