1
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Lee YN, Wang HH, Su CH, Lee HI, Chou YH, Hsieh CL, Liu WT, Shu KT, Chang KT, Yeh HI, Wu YJ. Deferoxamine accelerates endothelial progenitor cell senescence and compromises angiogenesis. Aging (Albany NY) 2021; 13:21364-21384. [PMID: 34508614 PMCID: PMC8457614 DOI: 10.18632/aging.203469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 08/02/2021] [Indexed: 11/25/2022]
Abstract
Senescence reduces the circulating number and angiogenic activity of endothelial progenitor cells (EPCs), and is associated with aging-related vascular diseases. However, it is very time-consuming to obtain aged cells (~1 month of repeated replication) or animals (~2 years) for senescence studies. Here, we established an accelerated senescence model by treating EPCs with deferoxamine (DFO), an FDA-approved iron chelator. Four days of low-dose (3 μM) DFO induced senescent phenotypes in EPCs, including a senescent pattern of protein expression, impaired mitochondrial bioenergetics, altered mitochondrial protein levels and compromised angiogenic activity. DFO-treated early EPCs from young and old donors (< 35 vs. > 70 years old) displayed similar senescent phenotypes, including elevated senescence-associated β-galactosidase activity and reduced relative telomere lengths, colony-forming units and adenosine triphosphate levels. To validate this accelerated senescence model in vivo, we intraperitoneally injected Sprague-Dawley rats with DFO for 4 weeks. Early EPCs from DFO-treated rats displayed profoundly senescent phenotypes compared to those from control rats. Additionally, in hind-limb ischemic mice, DFO pretreatment compromised EPC angiogenesis by reducing both blood perfusion and capillary density. DFO thus accelerates EPC senescence and appears to hasten model development for cellular senescence studies.
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Affiliation(s)
- Yi-Nan Lee
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Hsueh-Hsiao Wang
- Department of Medicine, MacKay Medical College, New Taipei 25245, Taiwan
| | - Cheng-Huang Su
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medicine, MacKay Medical College, New Taipei 25245, Taiwan
| | - Hsin-I Lee
- Department of Medicine, MacKay Medical College, New Taipei 25245, Taiwan
| | - Yen-Hung Chou
- Department of Medicine, MacKay Medical College, New Taipei 25245, Taiwan.,Institute of Biomedical Sciences, MacKay Medical College, New Taipei 25245, Taiwan
| | - Chin-Ling Hsieh
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Wen-Ting Liu
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Kuo-Tung Shu
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Kai-Ting Chang
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Hung-I Yeh
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medicine, MacKay Medical College, New Taipei 25245, Taiwan
| | - Yih-Jer Wu
- Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan.,Department of Medicine, MacKay Medical College, New Taipei 25245, Taiwan.,Institute of Biomedical Sciences, MacKay Medical College, New Taipei 25245, Taiwan
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2
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Komoto K, Nomoto T, El Muttaqien S, Takemoto H, Matsui M, Miura Y, Nishiyama N. Iron chelation cancer therapy using hydrophilic block copolymers conjugated with deferoxamine. Cancer Sci 2020; 112:410-421. [PMID: 32770631 PMCID: PMC7780030 DOI: 10.1111/cas.14607] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/14/2020] [Accepted: 08/02/2020] [Indexed: 01/20/2023] Open
Abstract
Cancer cells have high iron requirements due to their rapid growth and proliferation. Iron depletion using iron chelators has a potential in cancer treatment. Previous studies have demonstrated that deferoxamine (DFO) specifically chelates Fe(III) and exhibited antitumor activity in clinical studies. However, its poor pharmacokinetics has limited the therapeutic potential and practical application. Although polymeric iron chelators have been developed to increase the blood retention, none of previous studies has demonstrated their potential in iron chelation cancer therapy. Here, we developed polymeric DFO by the covalent conjugation of DFO to poly(ethylene glycol)‐poly(aspartic acid) (PEG‐PAsp) block copolymers. The polymeric DFO exhibited iron‐chelating ability comparable with free DFO, thereby arresting cell cycle and inducing apoptosis and antiproliferative activity. After intravenous administration, the polymeric DFO showed marked increase in blood retention and tumor accumulation in subcutaneous tumor models. Consequently, polymeric DFO showed significant suppression of the tumor growth compared with free DFO. This study reveals the first success of the design of polymeric DFO for enhancing iron chelation cancer therapy.
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Affiliation(s)
- Kana Komoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Takahiro Nomoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Sjaikhurrizal El Muttaqien
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan.,Center for Pharmaceutical and Medical Technology, Agency for the Assessment and Application of Technology (BPPT), LAPTIAB I, PUSPIPTEK, Serpong, Indonesia
| | - Hiroyasu Takemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
| | - Yutaka Miura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan.,Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, Kawasaki, Japan
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3
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Backe MB, Moen IW, Ellervik C, Hansen JB, Mandrup-Poulsen T. Iron Regulation of Pancreatic Beta-Cell Functions and Oxidative Stress. Annu Rev Nutr 2016; 36:241-73. [PMID: 27146016 DOI: 10.1146/annurev-nutr-071715-050939] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Dietary advice is the cornerstone in first-line treatment of metabolic diseases. Nutritional interventions directed at these clinical conditions mainly aim to (a) improve insulin resistance by reducing energy-dense macronutrient intake to obtain weight loss and (b) reduce fluctuations in insulin secretion through avoidance of rapidly absorbable carbohydrates. However, even in the majority of motivated patients selected for clinical trials, massive efforts using this approach have failed to achieve lasting efficacy. Less attention has been given to the role of micronutrients in metabolic diseases. Here, we review the evidence that highlights (a) the importance of iron in pancreatic beta-cell function and dysfunction in diabetes and (b) the integrative pathophysiological effects of tissue iron levels in the interactions among the beta cell, gut microbiome, hypothalamus, innate and adaptive immune systems, and insulin-sensitive tissues. We propose that clinical trials are warranted to clarify the impact of dietary or pharmacological iron reduction on the development of metabolic disorders.
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Affiliation(s)
- Marie Balslev Backe
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark;
| | - Ingrid Wahl Moen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark;
| | - Christina Ellervik
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, Massachusetts 02115
| | - Jakob Bondo Hansen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark;
| | - Thomas Mandrup-Poulsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark;
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4
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Latxague L, Gaboriau F, Chassande O, Leger JM, Pires V, Rouge P, Dassonville-Klimpt A, Fardeau S, Jarry C, Lescoat G, Guillon J, Sonnet P. Antiproliferative effect on HepaRG cell cultures of new calix[4]arenes. Part II. J Enzyme Inhib Med Chem 2010; 26:204-15. [DOI: 10.3109/14756366.2010.489898] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
| | - François Gaboriau
- Inserm U991(EA/MDC), Université de Rennes 1, Hôpital Pontchaillou, Rennes, France
| | | | | | - Viviane Pires
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, 1 rue des Louvels, Amiens, France
| | - Pascal Rouge
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, 1 rue des Louvels, Amiens, France
| | - Alexandra Dassonville-Klimpt
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, 1 rue des Louvels, Amiens, France
| | - Sylvain Fardeau
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, 1 rue des Louvels, Amiens, France
| | - Christian Jarry
- Université de Bordeaux, Pharmacochimie EA 4138, Bordeaux, France
| | - Gerard Lescoat
- Inserm U991(EA/MDC), Université de Rennes 1, Hôpital Pontchaillou, Rennes, France
| | - Jean Guillon
- Université de Bordeaux, Pharmacochimie EA 4138, Bordeaux, France
| | - Pascal Sonnet
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, 1 rue des Louvels, Amiens, France
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5
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Focke F, Schuermann D, Kuster N, Schär P. DNA fragmentation in human fibroblasts under extremely low frequency electromagnetic field exposure. Mutat Res 2010; 683:74-83. [PMID: 19896957 DOI: 10.1016/j.mrfmmm.2009.10.012] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 10/22/2009] [Accepted: 10/22/2009] [Indexed: 05/28/2023]
Abstract
Extremely low frequency electromagnetic fields (ELF-EMFs) were reported to affect DNA integrity in human cells with evidence based on the Comet assay. These findings were heavily debated for two main reasons; the lack of reproducibility, and the absence of a plausible scientific rationale for how EMFs could damage DNA. Starting out from a replication of the relevant experiments, we performed this study to clarify the existence and explore origin and nature of ELF-EMF induced DNA effects. Our data confirm that intermittent (but not continuous) exposure of human primary fibroblasts to a 50 Hz EMF at a flux density of 1 mT induces a slight but significant increase of DNA fragmentation in the Comet assay, and we provide first evidence for this to be caused by the magnetic rather than the electric field. Moreover, we show that EMF-induced responses in the Comet assay are dependent on cell proliferation, suggesting that processes of DNA replication rather than the DNA itself may be affected. Consistently, the Comet effects correlated with a reduction of actively replicating cells and a concomitant increase of apoptotic cells in exposed cultures, whereas a combined Fpg-Comet test failed to produce evidence for a notable contribution of oxidative DNA base damage. Hence, ELF-EMF induced effects in the Comet assay are reproducible under specific conditions and can be explained by minor disturbances in S-phase processes and occasional triggering of apoptosis rather than by the generation of DNA damage.
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Affiliation(s)
- Frauke Focke
- Institute of Biochemistry and Genetics, Department of Biomedicine, University of Basel, Basel, Switzerland
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6
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Rouge P, Pires VS, Gaboriau F, Dassonville-Klimpt A, Guillon J, Nascimento SD, Leger JM, Lescoat G, Sonnet P. Antiproliferative effect on HepaRG cell cultures of new calix[4]arenes. J Enzyme Inhib Med Chem 2009; 25:216-27. [DOI: 10.3109/14756360903169949] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Pascal Rouge
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, Amiens, France
| | - Viviane Silva Pires
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, Amiens, France
| | - François Gaboriau
- Inserm U522(EA/MDC); Université Européenne de Bretagne; Université de Rennes 1; IFR 140, Hôpital Pontchaillou, Rennes, France
| | - Alexandra Dassonville-Klimpt
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, Amiens, France
| | - Jean Guillon
- EA 4138 – Pharmacochimie, UFR des Sciences Pharmaceutiques, Université Bordeaux 2, Bordeaux, France
| | - Sophie Da Nascimento
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, Amiens, France
| | - Jean-Michel Leger
- EA 4138 – Pharmacochimie, UFR des Sciences Pharmaceutiques, Université Bordeaux 2, Bordeaux, France
| | - Gerard Lescoat
- Inserm U522(EA/MDC); Université Européenne de Bretagne; Université de Rennes 1; IFR 140, Hôpital Pontchaillou, Rennes, France
| | - Pascal Sonnet
- UMR-CNRS 6219, Laboratoire des glucides, Faculté de Pharmacie, Université de Picardie Jules Verne, Amiens, France
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7
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Langlois A, Bietiger W, Sencier MC, Maillard E, Pinget M, Kessler L, Sigrist S. Adenoviral infection or deferoxamine? Two approaches to overexpress VEGF in beta-cell lines. J Drug Target 2009; 17:415-22. [PMID: 19527112 DOI: 10.1080/10611860902929832] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Rapid and adequate revascularization of transplanted islets is important for their survival and function during transplantation. Vascular endothelial growth factor (VEGF) could play a critical role with respect to islet revascularization. The aim of this study was to compare two strategies that are used to overexpress VEGF in beta-cells: (1) gene therapy through adenoviral infection and (2) a pharmacological approach using deferoxamine (DFO). beta-Cell lines from rat insulinoma (RINm5F) were either infected using an adenovirus encoding the gene of human VEGF 165 or incubated with DFO. One day after treatment, the viability of RINm5F cells was preserved with 10 micromol/L of DFO (103.95 +/- 5.66% toward control; n = 4). In addition, adenoviral infection maintained the viability of cells for all the concentrations used. In both treatments, overexpression of VEGF was in a comparable level. Finally, the ratio of Bax/Bcl-2 indicated that the apoptosis increased in infected beta-cells whereas treatment with DFO seems to be antiapoptotic. Our results suggest that the use of DFO could be a realistic approach to improve the vascularization of islets during transplantation.
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Affiliation(s)
- Allan Langlois
- Centre européen d'étude du Diabète, Boulevard René Leriche, BP 30029, 67033 Strasbourg Cedex 2, France.
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8
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Pires VS, Gaboriau F, Guillon J, Nascimento S, Dassonville A, Lescoat G, Desplat V, Rochette J, Jarry C, Sonnet P. Modulation of cell proliferation in rat liver cell cultures by new calix[4]arenes. J Enzyme Inhib Med Chem 2008; 21:261-70. [PMID: 16918073 DOI: 10.1080/14756360600700384] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Cell cycle progression is dependent on intracellular iron level and chelators lead to iron depletion and decrease cell proliferation. This antiproliferative effect can be inhibited by exogenous iron. In this work, we present the synthesis of new synthetic calix[4]arene podands bearing two aspartic/glutamic acid, ornithine groups or hydrazide function at the lower rim, designed as potential iron chelators. The synthesis only afforded calix[4]arenes in the cone conformation. We report their effect on cell proliferation, in comparison with the new oral chelator ICL670A (4-[3,5-bis-(2-hydroxyphenyl)-1,2,4-triazol-1-yl]-benzoic acid). The antiproliferative effect of these new compounds was studied in the rat hepatoma cell line Fao by measuring mitochondrial succinate dehydrogenase activity. Their cytotoxicity was evaluated by extracellular LDH activity. Preliminary results indicated that among all tested compounds, monohydrazidocalix[4]arene 2 which is not cytotoxic in Fao cells exhibits interesting antiproliferative activity. This effect, independent on iron depletion, remains to be further explored. Moreover, it also shows that new substituted calix[4]arenes could open the way to new valuable medicinal chemistry scaffolding.
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Affiliation(s)
- Viviane Silva Pires
- EA 3901, DMAG, UFR de Pharmacie et de Médecine, Université de Picardie Jules Verne, 1 rue des Louvels, 80037 Amiens, France
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9
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Gaboriau F, Laupen-Chassay C, Pasdeloup N, Pierre JL, Brissot P, Lescoat G. Modulation of cell proliferation and polyamine metabolism in rat liver cell cultures by the iron chelator O-trensox. Biometals 2006; 19:623-32. [PMID: 16944279 DOI: 10.1007/s10534-006-6888-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2005] [Accepted: 01/21/2006] [Indexed: 10/24/2022]
Abstract
The antiproliferative effects of the iron chelator O-trensox and the ornithine-decarboxylase (ODC) inhibitor alpha-difluoromethylornithine (DFMO) were characterized in the rat hepatoma cell line FAO, the rat liver epithelial cell line (RLEC) and the primary rat hepatocyte cultures stimulated by EGF. We observed that O-trensox and DFMO decreased cell viabilty and DNA replication in the three culture models. The cytostatic effect of O-trensox was correlated to a cytotoxicity, higher than for DFMO, and to a cell cycle arrest in G0/G1 or S phases. Moreover, O-trensox and DFMO decreased the intracellular concentration of spermidine in the three models without changing significantly the spermine level. We concluded that iron, but also polyamine depletion, decrease cell growth. However, the drop in cell proliferation obtained with O-trensox was stronger compared to DFMO effect. Altogether, our data provide insights that, in the three rat liver cell culture models, the cytostatic effect of the iron chelator O-trensox may be the addition of two mechanisms: iron and polyamine depletion.
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10
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YOON YOUNGSIL, CHO HYESEONG, LEE JAEHO, YOON GYESOON. Mitochondrial Dysfunction via Disruption of Complex II Activity during Iron Chelation-Induced Senescence-like Growth Arrest of Chang Cells. Ann N Y Acad Sci 2004. [DOI: 10.1196/annals.1293.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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11
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Yoon YS, Cho H, Lee JH, Yoon G. Mitochondrial dysfunction via disruption of complex II activity during iron chelation-induced senescence-like growth arrest of Chang cells. Ann N Y Acad Sci 2004; 1011:123-32. [PMID: 15126290 DOI: 10.1007/978-3-662-41088-2_13] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
When cells are deprived of iron, their growth is invariably inhibited. However, the mechanism involved remains largely unclear. Recently, we have reported that subcytotoxic concentration of deferoxamine mesylate (DFO), an iron chelator, specifically inhibited transition of Chang cell, a normal hepatocyte cell line, from G1 to S phase, which was accompanied by irreversible appearance of senescent biomarkers. To investigate factors responsible for the irreversible arrest, we examined mitochondrial activities because they require several irons for their proper structure and function. After exposure to 1 M DFO, total cellular ATP level was irreversibly decreased with concurrent disruption of mitochondrial membrane potential (DeltaPsim), implying that it might be one of the crucial factors involved in the arrest. DFO did not directly inhibit the mitochondrial respiratory activities in vitro. Among the respiratory activities, complex II activity was specifically inhibited through a down-regulation of the expression of its iron-sulfur subunit. We also observed that mitochondrial morphology was drastically changed to highly elongated form. Our results suggest that mitochondrial function is sensitive to cellular iron level and iron deprivation might be involved in inducing the senescent arrest. In addition, complex II, which is a part of both oxidative phosphorylation and the Krebs cycle, could be one of the critical factors that regulate mitochondrial function by responding to iron levels.
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Affiliation(s)
- Young-Sil Yoon
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 442-721, South Korea
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12
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Gaboriau F, Chantrel-Groussard K, Rakba N, Loyer P, Pasdeloup N, Hider RC, Brissot P, Lescoat G. Iron mobilization, cytoprotection, and inhibition of cell proliferation in normal and transformed rat hepatocyte cultures by the hydroxypyridinone CP411, compared to CP20: a biological and physicochemical study. Biochem Pharmacol 2004; 67:1479-87. [PMID: 15041465 DOI: 10.1016/j.bcp.2003.12.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2003] [Accepted: 12/07/2003] [Indexed: 11/18/2022]
Abstract
The present study analyzes the iron mobilization, the cytoprotective, and the antiproliferative effects of the lipophilic hydroxypyridinone CP411, in comparison with the hydrophilic chelator CP20 or deferiprone used in the treatment of iron overload. Primary rat hepatocyte cultures and the rat hepatoma cell line Fao were used. Chelator cell uptake was evaluated by mass spectrometry in the two models. This method was also used to investigate the stability of the chelators in an acellular system as well as their scavenging and chelating effects against the hydroxyl radical generated by the Fenton reaction. The iron mobilization and the cytoprotective effects of the chelators were evaluated in primary cultures by measuring respectively 55Fe and lactate dehydrogenase release in the culture medium. The antiproliferative effect of the chelators was studied using the Fao cell line and measuring DNA synthesis by thymidine incorporation and DNA content by flow cytometry. We observed that CP411 entered the hepatocytes and the Fao cells respectively 4 and 13 times more than CP20. CP411 was 2.5 times more effective than CP20 to mobilize iron from preloaded hepatocytes. Pretreatment of the hepatocytes with CP20 or CP411 decreased the toxic effect of iron and CP411 was 1.6 times more effective than CP20. A dose-dependent decrease of DNA synthesis, correlated to an accumulation of cells in S phase, was observed in the Fao cell line in the presence of CP411, while CP20 was without effect. CP411 effect was inhibited by addition of iron simultaneously with the chelator, the addition of Zn or Cu was without effect. The inhibitory effect of CP411 was reversible since, 24hr after removal of the chelator, DNA replication reached the control level. The results show that CP411 is more efficient to protect the hepatocyte from the toxic effect of iron load and to inhibit tumor cell proliferation. Its higher efficiency may result from its better cell uptake since equimolar solutions of the two chelators in an acellular system exhibit the same ability to inhibit the Fenton reaction.
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Affiliation(s)
- François Gaboriau
- Inserm U 522, Equipe: "Foie, fer et autres métaux", CHU de Rennes, Hôpital Pontchaillou, Rennes, France.
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13
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Kwak IH, Kim HS, Choi OR, Ryu MS, Lim IK. Nuclear Accumulation of Globular Actin as a Cellular Senescence Marker. Cancer Res 2004; 64:572-80. [PMID: 14744771 DOI: 10.1158/0008-5472.can-03-1856] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We evaluated the nuclear actin accumulation as a new marker of cellular senescence, using human diploid fibroblast (HDF), chondrocyte primary cultures, Mv1Lu epithelial cells, and Huh7 cancer cells. Nuclear accumulation of globular actin (G-actin) and dephosphorylated cofilin was highly significant in the senescent HDF cells, accompanied with inhibition of LIM kinase (LIMK) -1 activity. When nuclear export of the actin was induced by 12-O-tetradecanoylphorbol-13-acetate, DNA synthesis of the senescent cells increased significantly, accompanied with changes of morphologic and biochemical profiles, such as increased RB protein phosphorylation and decreased expressions of p21(WAF1), cytoplasmic p-extracellular signal-regulated kinase 1/2, and caveolins 1 and 2. Significance of these findings was strengthened additionally by the fact that nuclear actin export of young HDF cells was inhibited by the treatment with leptomycin B and mutant cofilin transfection, whose LIMK-1 phosphorylation site was lost, and the old cell phenotypes were duplicated with nuclear actin accumulation, suggesting that nuclear actin accumulation was accompanied with G1 arrest during cellular senescence. The aforementioned changes were observed not only in the replicative senescence but also in the senescence induced by treatment of HDF cells, Mv1Lu, primary culture of human chondrocytes, or Huh7 cells with H-ras virus infection, hydroxyurea, deferoxamine, or H(2)O(2). Nuclear actin accumulation was much more sensitive and an earlier event than the well-known, senescence-associated beta-galactosidase activity.
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Affiliation(s)
- In Hae Kwak
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, Korea
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14
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Yoon G, Kim HJ, Yoon YS, Cho H, Lim IK, Lee JH. Iron chelation-induced senescence-like growth arrest in hepatocyte cell lines: association of transforming growth factor beta1 (TGF-beta1)-mediated p27Kip1 expression. Biochem J 2002; 366:613-21. [PMID: 11945174 PMCID: PMC1222780 DOI: 10.1042/bj20011445] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2001] [Revised: 03/06/2002] [Accepted: 04/11/2002] [Indexed: 11/17/2022]
Abstract
Iron is essential for cellular proliferation in all organisms. When deprived of iron, the growth of cells is invariably inhibited. However, the mechanism involved remains largely unclear. In the present study, we have observed that subcytotoxic concentrations of desferroxamine mesylate (DFO), an iron chelator, specifically inhibited the transition from G1 to S-phase of Chang cells, a hepatocyte cell line. This was accompanied by the appearance of senescent biomarkers, such as enlarged and flattened cell morphology, senescence-associated beta-galactosidase activity and reduced expression of poly(ADP-ribose) polymerase. Concomitantly, p27Kip1 (where Kip is kinase-inhibitory protein) was induced markedly, whereas other negative cell-cycle regulators, such as p21Cip1 (where Cip is cyclin-dependent kinase-interacting protein), p15INK4B and p16INK4A (where INK is inhibitors of cyclin-dependent kinase 4), were not, implying its association in the G1 arrest. Furthermore, the induction of p27Kip1 was accompanied by an increased level of transforming growth factor beta1 (TGF-beta1) mRNA. When neutralized with an anti-(TGF-beta1) antibody, p27Kip1 induction was completely abolished, indicating that TGF-beta1 is the major inducer of p27Kip1. Finally, DFO-induced senescence-like arrest was found to be independent of p53, since cell-cycle arrest was still observed with two p53-negative cell lines, Huh7 and Hep3B cells. In conclusion, DFO induced senescence-like G1 arrest in hepatocyte cell lines and this was associated with the induction of p27Kip1 through TGF-beta1, but was independent of p53.
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Affiliation(s)
- Gyesoon Yoon
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Wonchon-Dong, Paldal-Gu, Suwon 442-749, South Korea.
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Kramer-Stickland K, Edmonds A, Bair WB, Bowden GT. Inhibitory effects of deferoxamine on UVB-induced AP-1 transactivation. Carcinogenesis 1999; 20:2137-42. [PMID: 10545417 DOI: 10.1093/carcin/20.11.2137] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Production of reactive oxygen species (ROS) by iron can contribute directly to DNA and protein damage and may contribute to cell signaling and proliferation. We have examined the effects of the iron(III) chelator deferroxamine (DFO) and iron (FeCl(3)) on UVB (290-320 nm)-induced activator protein 1 (AP-1) signaling. The ability of DFO to inhibit UVB-induced AP-1 transactivation was tested in a human keratinocyte cell line stably transfected with a luciferase reporter driven by a single AP-1 element. DFO treatment 24 h prior to UVB irradiation reduced UVB-induced AP-1 transactivation by approximately 80%, with the effect of DFO diminishing as pre-treatment time was shortened. Treatment with FeCl(3) a minimum of 6 h prior to UVB potentiated the UVB induction of AP-1 transactivation by 2-3-fold. DFO was able to ablate both the UVB induction of AP-1 transactivation as well as the potentiation by FeCl(3). The antioxidants Trolox and N-acetyl cysteine were both able to inhibit UVB-induced AP-1 transactivation and Trolox was able to inhibit the potentiation of UVB-induced AP-1 by FeCl(3). These results indicate that UVB-induced AP-1 activation may be in part due to oxidant effects of UVB and intercellular iron.
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Affiliation(s)
- K Kramer-Stickland
- Department of Radiation Oncology, The University of Arizona Health Sciences Center, Tucson, AZ 85724, USA
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Petermann H, Vogl S, Schulze E, Dargel R. Chronic liver injury alters basal and stimulated nitric oxide production and 3H-thymidine incorporation in cultured sinusoidal endothelial cells from rats. J Hepatol 1999; 31:284-92. [PMID: 10453942 DOI: 10.1016/s0168-8278(99)80226-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND/AIM Under pathological conditions the nitric oxide synthase (NOS)-mediated nitric oxide production of sinusoidal endothelial cells might be altered. Therefore, studies were performed to evaluate the nitrite formation by cultured sinusoidal endothelial cells from rat livers chronically injured by thioacetamide and the effect of endogenously or exogenously generated nitric oxide on their proliferative activity. METHODS Basal and stimulated nitrite formation, expression of NOS and DNA synthesis were examined in sinusoidal endothelial cells isolated and cultivated from livers with incipient or advanced chemically-induced cirrhosis. RESULTS Cultured sinusoidal endothelial cells from injured livers exhibited a reduced basal and an increased lipopolysaccharide-stimulated nitrite production when compared with controls. Western blot analysis revealed a markedly reduced protein expression of endothelial NOS (eNOS) and inducible NOS (iNOS) in sinusoidal endothelial cells from both experimental groups when compared with controls. Lipopolysaccharide stimulated iNOS expression in sinusoidal endothelial cells from control livers only marginally, and from those with cirrhosis more strongly. There was no clear correlation between the amount of enzyme and nitrite formation. Cultured sinusoidal endothelial cells from livers with incipient cirrhosis showed a higher proliferative activity than controls. Endogenously-produced nitric oxide inhibited DNA synthesis in all groups in a cGMP-independent way. Exogenously-generated nitric oxide affected DNA synthesis differently in sinusoidal endothelial cells from controls and injured livers. CONCLUSION The results provide evidence that cultured sinusoidal endothelial cells from controls and livers with incipient or advanced cirrhosis differ with respect to basal and lipopolysaccharide-stimulated nitrite production. The data can be taken as evidence that in sinusoidal endothelial cells from livers chronically injured by thioacetamide, eNOS and iNOS are aberrantly expressed and differently regulated.
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Affiliation(s)
- H Petermann
- Institute of Pathobiochemistry, Medical Faculty of Friedrich Schiller University Jena, Germany
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