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Shesh BP, Connor JR. A novel view of ferritin in cancer. Biochim Biophys Acta Rev Cancer 2023; 1878:188917. [PMID: 37209958 PMCID: PMC10330744 DOI: 10.1016/j.bbcan.2023.188917] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/13/2023] [Accepted: 05/13/2023] [Indexed: 05/22/2023]
Abstract
Since its discovery more than 85 years ago, ferritin has principally been known as an iron storage protein. However, new roles, beyond iron storage, are being uncovered. Novel processes involving ferritin such as ferritinophagy and ferroptosis and as a cellular iron delivery protein not only expand our thinking on the range of contributions of this protein but present an opportunity to target these pathways in cancers. The key question we focus on within this review is whether ferritin modulation represents a useful approach for treating cancers. We discussed novel functions and processes of this protein in cancers. We are not limiting this review to cell intrinsic modulation of ferritin in cancers, but also focus on its utility in the trojan horse approach in cancer therapeutics. The novel functions of ferritin as discussed herein realize the multiple roles of ferritin in cell biology that can be probed for therapeutic opportunities and further research.
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Affiliation(s)
| | - James R Connor
- Department of Neurosurgery, Penn State Hershey Medical Center, Hershey, PA, USA.
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2
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Langenbacher RE, Horoszko CP, Kim M, Heller DA. Hematoxylin Nuclear Stain Reports Oxidative Stress via Near-Infrared Emission. ACS Chem Biol 2023; 18:1237-1245. [PMID: 37070948 PMCID: PMC10289833 DOI: 10.1021/acschembio.3c00156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Hematoxylin & eosin (H&E) is the gold standard histological stain used for medical diagnosis and has been used for over a century. Herein, we examined the near-infrared II (NIR-II) fluorescence of this stain. We observed significant NIR-II emission from the hematoxylin component of the H&E stain. We found that the emission intensity, using the common aluminum(III) hematoxylin mordant, could be modulated by the availability of endogenous iron(III), and this emission intensity increased at higher oxidative stress. Our mechanistic investigations found that hematoxylin emission reported the nuclear translocation of the iron via the protein ferritin. In human tumor tissue samples, oxidative stress biomarkers correlated with hematoxylin NIR-II emission intensity. Emission response of the stain was also observed in human Alzheimer's disease brain tissue regions affected by disease progression, suggesting that ferritin nuclear translocation is preserved in these regions as an oxidative stress response. These findings indicate that NIR-II emission from the H&E stain provides a new source of redox information in tissues with implications for biomedical research and clinical practice.
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Affiliation(s)
| | | | - Mijin Kim
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
| | - Daniel A. Heller
- Weill Cornell Medicine, Cornell University, New York, NY 10065, United States
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
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3
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Giorgi G, Mascaró M, Gandini NA, Rabassa ME, Coló GP, Arévalo J, Curino AC, Facchinetti MM, Roque ME. Iron cycle disruption by heme oxygenase-1 activation leads to a reduced breast cancer cell survival. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166621. [PMID: 36539019 DOI: 10.1016/j.bbadis.2022.166621] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022]
Abstract
Heme oxygenase-1 (HO-1), which catalyzes heme degradation releasing iron, regulates several processes related to breast cancer. Iron metabolism deregulation is also connected with several tumor processes. However the regulatory relationship between HO-1 and iron proteins in breast cancer remains unclear. Using human breast cancer biopsies, we found that high HO-1 levels significantly correlated with low DMT1 levels. Contrariwise, high HO-1 levels significantly correlated with high ZIP14 and prohepcidin expression, as well as hemosiderin storage. At mRNA level, we found that high HO-1 expression significantly correlated with low DMT1 expression but high ZIP14, L-ferritin and hepcidin expression. In in vivo experiments in mice with genetic overexpression or pharmacological activation of HO-1, we detected the same expression pattern observed in human biopsies. In in vitro experiments, HO-1 activation induced changes in iron proteins expression leading to an increase of hemosiderin, ROS levels, lipid peroxidation and a decrease of the growth rate. Such low growth rate induced by HO-1 activation was reversed when iron levels or ROS levels were reduced. Our findings demonstrate an important role of HO-1 on iron homeostasis in breast cancer. The changes in iron proteins expression when HO-1 is modulated led to the iron accumulation deregulating the iron cell cycle, and consequently, generating oxidative stress and low viability, all contributing to impair breast cancer progression.
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Affiliation(s)
- G Giorgi
- Laboratorio de Fisiología Humana, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), 8000 Bahía Blanca, Argentina
| | - M Mascaró
- Laboratorio de Biología del Cáncer, Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Universidad Nacional del Sur (UNS)-CONICET, Departamento de Biología, Bioquímica y Farmacia (UNS), 8000 Bahía Blanca, Argentina
| | - N A Gandini
- Laboratorio de Biología del Cáncer, Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Universidad Nacional del Sur (UNS)-CONICET, Departamento de Biología, Bioquímica y Farmacia (UNS), 8000 Bahía Blanca, Argentina
| | - M E Rabassa
- Centro de Investigaciones Inmunológicas Básicas y Aplicadas (CINIBA), Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP), 1900 La Plata, Buenos Aires, Argentina
| | - G P Coló
- Laboratorio de Biología del Cáncer, Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Universidad Nacional del Sur (UNS)-CONICET, Departamento de Biología, Bioquímica y Farmacia (UNS), 8000 Bahía Blanca, Argentina
| | - J Arévalo
- Servicio de Patología, Hospital Interzonal de Agudos "Dr. José Penna", 8000 Bahía Blanca, Argentina
| | - A C Curino
- Laboratorio de Biología del Cáncer, Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Universidad Nacional del Sur (UNS)-CONICET, Departamento de Biología, Bioquímica y Farmacia (UNS), 8000 Bahía Blanca, Argentina.
| | - M M Facchinetti
- Laboratorio de Biología del Cáncer, Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Universidad Nacional del Sur (UNS)-CONICET, Departamento de Biología, Bioquímica y Farmacia (UNS), 8000 Bahía Blanca, Argentina
| | - M E Roque
- Laboratorio de Fisiología Humana, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), 8000 Bahía Blanca, Argentina
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4
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Avdeeva AS. Inflammatory markers in rheumatic diseases. RHEUMATOLOGY SCIENCE AND PRACTICE 2022. [DOI: 10.47360/1995-4484-2022-561-569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Immune-mediated rheumatic diseases (IMRDs) are a broad group of pathological conditions based on impaired immunological tolerance to one’s own tissues leading to inflammation and irreversible organ damage. Laboratory diagnosis of IMRDs includes a wide range of biomarkers (autoantibodies, acute phase proteins, cytokines, markers of endothelial damage, components of the complement system, immunoglobulins, cryoglobulins, lymphocyte subpopulations, indicators of bone metabolism, apoptosis markers, genetic markers, etc). One of the leading aspects of laboratory diagnosis of IMRDs is the study of the level of inflammation markers in the blood (erythrocyte sedimentation rate, C-reactive protein (CRP), serum amyloid protein (CAA), ferritin, procalcitonin, apolipoprotein AI, calprotectin, etc). The analysis of inflammation markers makes it possible to assess the disease activity, the nature of the progression and the prognosis of the outcomes of a chronic inflammatory process, as well as the effectiveness of the therapy. The review presents the latest data on the role of the most frequently studied inflammatory markers such as CRP, CAA and ferritin.
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Spead O, Zaepfel BL, Rothstein JD. Nuclear Pore Dysfunction in Neurodegeneration. Neurotherapeutics 2022; 19:1050-1060. [PMID: 36070178 PMCID: PMC9587172 DOI: 10.1007/s13311-022-01293-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2022] [Indexed: 10/14/2022] Open
Abstract
The nuclear pore complex (NPC) is a large multimeric structure that is interspersed throughout the membrane of the nucleus and consists of at least 33 protein components. Individual components cooperate within the nuclear pore to facilitate selective passage of materials between the nucleus and cytoplasm while simultaneously performing pore-independent roles throughout the cell. NPC dysfunction is a hallmark of neurodegenerative disorders including Alzheimer's disease, Huntington's disease, and amyotrophic lateral sclerosis (ALS). NPC components can become mislocalized or altered in expression in neurodegeneration. These alterations in NPC structure are often detrimental to the neuronal function and ultimately lead to neuronal loss. This review highlights the importance of nucleocytoplasmic transport and NPC integrity and how dysfunction of such may contribute to neurodegeneration.
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Affiliation(s)
- Olivia Spead
- Brain Science Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Benjamin L Zaepfel
- Brain Science Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Jeffrey D Rothstein
- Brain Science Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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Marquez-Curtis LA, Dai XQ, Hang Y, Lam JY, Lyon J, Manning Fox JE, McGann LE, MacDonald PE, Kim SK, Elliott JAW. Cryopreservation and post-thaw characterization of dissociated human islet cells. PLoS One 2022; 17:e0263005. [PMID: 35081145 PMCID: PMC8791532 DOI: 10.1371/journal.pone.0263005] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 01/06/2022] [Indexed: 12/22/2022] Open
Abstract
The objective of this study is to optimize the cryopreservation of dissociated islet cells and obtain functional cells that can be used in single-cell transcriptome studies on the pathology and treatment of diabetes. Using an iterative graded freezing approach we obtained viable cells after cooling in 10% dimethyl sulfoxide and 6% hydroxyethyl starch at 1°C/min to -40°C, storage in liquid nitrogen, rapid thaw, and removal of cryoprotectants by serial dilution. The expression of epithelial cell adhesion molecule declined immediately after thaw, but recovered after overnight incubation, while that of an endocrine cell marker (HPi2) remained high after cryopreservation. Patch-clamp electrophysiology revealed differences in channel activities and exocytosis of various islet cell types; however, exocytotic responses, and the biophysical properties of voltage-gated Na+ and Ca2+ channels, are sustained after cryopreservation. Single-cell RNA sequencing indicates that overall transcriptome and crucial exocytosis genes are comparable between fresh and cryopreserved dispersed human islet cells. Thus, we report an optimized procedure for cryopreserving dispersed islet cells that maintained their membrane integrity, along with their molecular and functional phenotypes. Our findings will not only provide a ready source of cells for investigating cellular mechanisms in diabetes but also for bio-engineering pseudo-islets and islet sheets for modeling studies and potential transplant applications.
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Affiliation(s)
- Leah A. Marquez-Curtis
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Xiao-Qing Dai
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Yan Hang
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, United States of America
- Stanford Diabetes Research Center, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Jonathan Y. Lam
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, United States of America
| | - James Lyon
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Jocelyn E. Manning Fox
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Locksley E. McGann
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Patrick E. MacDonald
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Seung K. Kim
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, United States of America
- Stanford Diabetes Research Center, Stanford University School of Medicine, Stanford, CA, United States of America
- Endocrinology Division, Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Janet A. W. Elliott
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
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Mahroum N, Alghory A, Kiyak Z, Alwani A, Seida R, Alrais M, Shoenfeld Y. Ferritin - from iron, through inflammation and autoimmunity, to COVID-19. J Autoimmun 2022; 126:102778. [PMID: 34883281 PMCID: PMC8647584 DOI: 10.1016/j.jaut.2021.102778] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 01/08/2023]
Abstract
While it took decades to arrive to a conclusion that ferritin is more than an indicator of iron storage level, it took a short period of time through the COVID-19 pandemic to wonder what the reason behind high levels of ferritin in patients with severe COVID-19 might be. Unsurprisingly, acute phase reactant was not a satisfactory explanation. Moreover, the behavior of ferritin in patients with severe COVID-19 and the subsequent high mortality rates in patients with high ferritin levels necessitated further investigations to understand the role of ferritin in the diseases. Ferritin was initially described to accompany various acute infections, both viral and bacterial, indicating an acute response to inflammation. However, with the introduction of the hyperferritinemic syndrome connecting four severe pathological conditions such as adult-onset Still's disease, macrophage activation syndrome, catastrophic antiphospholipid syndrome, and septic shock added another aspect of ferritin where it could have a pathogenetic role rather than an extremely elevated protein only. In fact, suggesting that COVID-19 is a new member in the spectrum of hyperferritinemic syndrome besides the four mentioned conditions could hopefully direct further search on the pathogenetic role of ferritin. Doubtlessly, improving our understanding of those aspects of ferritin would enormously contribute to better coping with severe diseases in terms of treatment and prevention of complications. The origin, history, importance, and the advances of searching the role of ferritin in various pathological and clinical processes are presented hereby in our article. In addition, the implications of ferritin in COVID-19 are addressed.
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Affiliation(s)
- Naim Mahroum
- International School of Medicine, Istanbul Medipol University, Istanbul, Turkey,Internal Medicine B and Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Ramat- Gan, Israel,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel,Corresponding author. Internal medicine “B” department, Sheba Medical Center (Affiliated to Tel-Aviv University), Tel-Hashomer, 5265601, Israel
| | - Amal Alghory
- International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Zeynep Kiyak
- International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Abdulkarim Alwani
- International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Ravend Seida
- International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Mahmoud Alrais
- International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
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Pini T, Haywood M, McCallie B, Lane SL, Schoolcraft WB, Katz-Jaffe M. Liquid chromatography-tandem mass spectrometry reveals an active response to DNA damage in human spermatozoa. F&S SCIENCE 2021; 2:153-163. [PMID: 35559750 DOI: 10.1016/j.xfss.2021.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/23/2021] [Accepted: 03/13/2021] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To investigate how endogenously elevated DNA fragmentation alters the human sperm proteome, and whether this fragmentation contributes to genomic deletions. DESIGN Research study. SETTING Commercial fertility clinic. PATIENT(S) Men with low (0%-4%, n = 7) or high (≥16%, n = 6) sperm DNA fragmentation, as assessed by terminal deoxynucleotidyl transferase dUTP nick end labeling assay. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Global sperm proteome, single-nucleotide polymorphism genotyping array. RESULT(S) A total of 78 significantly differentially abundant proteins (30 decreased, 48 increased) were observed in control vs. high DNA damage samples. DNA damage resulted in robust proteomic responses, including markers of oxidative stress and apoptosis, DNA damage repair proteins, and transcription/translation and protein turnover machinery. Several key sperm functional proteins were significantly decreased in ejaculates with high DNA damage. We were unable to substantiate a link between increased DNA fragmentation and genomic deletions in human spermatozoa. CONCLUSION(S) Developing human spermatozoa initiate an active transcriptional response to endogenous DNA damage, which manifests as alterations in the sperm proteome.
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Affiliation(s)
- Taylor Pini
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado.
| | - Mary Haywood
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado
| | - Blair McCallie
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado
| | - Sydney L Lane
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado
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Characterization and functional analysis of the proteins Prohibitin 1 and 2 in Trypanosoma cruzi. PLoS Negl Trop Dis 2021; 15:e0009322. [PMID: 33830991 PMCID: PMC8057595 DOI: 10.1371/journal.pntd.0009322] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 04/20/2021] [Accepted: 03/23/2021] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Chagas disease is the third most important neglected tropical disease. There is no vaccine available, and only two drugs are generally prescribed for the treatment, both of which with a wide range of side effects. Our study of T. cruzi PHBs revealed a pleiotropic function in different stages of the parasite, participating actively in the transformation of the non-infective replicative epimastigote form into metacyclic trypomastigotes and also in the multiplication of intracellular amastigotes. METHODOLOGY/PRINCIPAL FINDINGS To obtain and confirm our results, we applied several tools and techniques such as electron microscopy, immuno-electron microscopy, bioinformatics analysis and molecular biology. We transfected T. cruzi clones with the PHB genes, in order to overexpress the proteins and performed a CRISPR/Cas9 disruption to obtain partially silenced PHB1 parasites or completely silenced PHB2 parasites. The function of these proteins was also studied in the biology of the parasite, specifically in the transformation rate from non-infective forms to the metacyclic infective forms, and in their capacity of intracellular multiplication. CONCLUSION/SIGNIFICANCE This research expands our understanding of the functions of PHBs in the life cycle of the parasite. It also highlights the protective role of prohibitins against ROS and reveals that the absence of PHB2 has a lethal effect on the parasite, a fact that could support the consideration of this protein as a possible target for therapeutic action.
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Chen W, Jiang L, Hu Y, Tang N, Liang N, Li XF, Chen YW, Qin H, Wu L. Ferritin reduction is essential for cerebral ischemia-induced hippocampal neuronal death through p53/SLC7A11-mediated ferroptosis. Brain Res 2021; 1752:147216. [PMID: 33333054 DOI: 10.1016/j.brainres.2020.147216] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/02/2020] [Accepted: 11/25/2020] [Indexed: 12/23/2022]
Abstract
Cerebral ischemia is the most common cause of hippocampal neuronal death and the most prevalent cause of stroke with high mortality rate. Ferroptosis has been suggested to affect the role of hippocampal neurons. This study explores the influence of lentivirus infection-induced ferritin overexpression in hippocampal neuronal injury and death through simulations in August Copenhagen Irish rat models. Twenty-four-hour cerebral ischemia-reperfusion injury was induced in the rats after 90-min middle cerebral artery occlusion (MCAO). Ferritin overexpression was induced through lentivirus infection. The Morris Water Maze (MWM) test and tau hyperphosphorylation test were performed on hippocampal neurons to establish a MCAO model. The effect of ferritin overexpression on hippocampal neuronal death was evaluated using hematoxylin-eosin staining and annexin V/propidium iodide flow cytometry. The MWM test revealed that MCAO modeling decreased the cognitive and locomotor capacity of the rats, whereas ferritin overexpression partially reversed the effect of MCAO. In addition, the hyperphosphorylation of tau caused by MCAO was reduced by ferritin. Pathogenic changes, impaired viability, increased apoptosis, and elevated caspase-9 cleavage in hippocampal neurons were clearly recovered by ferritin. Moreover, robust reactive oxygen species production and glutathione consumption, which was induced by MCAO modeling, were ameliorated by ferritin. Furthermore, two key modulators of ferroptosis, p53 and SLC7A11, were demonstrated to be upregulated by MCAO modeling and downregulated by ferritin. Ferritin reduction is essential for cerebral ischemia-induced hippocampal neuronal ferroptosis mediated via p53 and SLC7A11.
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Affiliation(s)
- Wei Chen
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Lingfei Jiang
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Graduate College of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Yueqiang Hu
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Nong Tang
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China.
| | - Ni Liang
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Xing-Feng Li
- Graduate College of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Ye-Wen Chen
- Graduate College of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Hongling Qin
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Lin Wu
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Scientific Laboratorial Centre Guangxi University of Chinese Medicine, Nanning, Guangxi, China.
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Görg B, Karababa A, Schütz E, Paluschinski M, Schrimpf A, Shafigullina A, Castoldi M, Bidmon HJ, Häussinger D. O-GlcNAcylation-dependent upregulation of HO1 triggers ammonia-induced oxidative stress and senescence in hepatic encephalopathy. J Hepatol 2019; 71:930-941. [PMID: 31279900 DOI: 10.1016/j.jhep.2019.06.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 06/24/2019] [Accepted: 06/27/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND & AIMS Cerebral oxidative stress plays an important role in the pathogenesis of hepatic encephalopathy (HE), but the underlying mechanisms are incompletely understood. Herein, we analyzed a role of heme oxygenase (HO)1, iron and NADPH oxidase 4 (Nox4) for the induction of oxidative stress and senescence in HE. METHODS Gene and protein expression in human post-mortem brain samples was analyzed by gene array and western blot analysis. Mechanisms and functional consequences of HO1 upregulation were studied in NH4Cl-exposed astrocytes in vitro by western blot, qPCR and super-resolution microscopy. RESULTS HO1 and the endoplasmic reticulum (ER) stress marker grp78 were upregulated, together with changes in the expression of multiple iron metabolism-related genes, in post-mortem brain samples from patients with liver cirrhosis and HE. NH4Cl elevated HO1 protein and mRNA in cultured astrocytes through glutamine synthetase (GS)-dependent upregulation of glutamine/fructose amidotransferases 1/2 (GFAT1/2), which blocked the transcription of the HO1-targeting miR326-3p in a O-GlcNAcylation dependent manner. Upregulation of HO1 by NH4Cl triggered ER stress and was associated with elevated levels of free ferrous iron and expression changes in iron metabolism-related genes, which were largely abolished after knockdown or inhibition of GS, GFAT1/2, HO1 or iron chelation. NH4Cl, glucosamine (GlcN) and inhibition of miR326-3p upregulated Nox4, while knockdown of Nox4, GS, GFAT1/2, HO1 or iron chelation prevented NH4Cl-induced RNA oxidation and astrocyte senescence. Elevated levels of grp78 and O-GlcNAcylated proteins were also found in brain samples from patients with liver cirrhosis and HE. CONCLUSION The present study identified glucosamine synthesis-dependent protein O-GlcNAcylation as a novel mechanism in the pathogenesis of HE that triggers oxidative and ER stress, as well as senescence, through upregulation of HO1 and Nox4. LAY SUMMARY Patients with liver cirrhosis frequently exhibit hyperammonemia and suffer from cognitive and motoric dysfunctions, which at least in part involve premature ageing of the astrocytes in the brain. This study identifies glucosamine and an O-GlcNAcylation-dependent disruption of iron homeostasis as novel triggers of oxidative stress, thereby mediating ammonia toxicity in the brain.
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Affiliation(s)
- Boris Görg
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany.
| | - Ayşe Karababa
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Elina Schütz
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Martha Paluschinski
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Alina Schrimpf
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Aygul Shafigullina
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Mirco Castoldi
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Hans J Bidmon
- C.&O. Vogt Institute for Brain Research, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Dieter Häussinger
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
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Ravi V, Madhankumar AB, Abraham T, Slagle-Webb B, Connor JR. Liposomal delivery of ferritin heavy chain 1 (FTH1) siRNA in patient xenograft derived glioblastoma initiating cells suggests different sensitivities to radiation and distinct survival mechanisms. PLoS One 2019; 14:e0221952. [PMID: 31491006 PMCID: PMC6730865 DOI: 10.1371/journal.pone.0221952] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/19/2019] [Indexed: 12/15/2022] Open
Abstract
Elevated expression of the iron regulatory protein, ferritin heavy chain 1 (FTH1), is increasingly being associated with high tumor grade and poor survival outcomes in glioblastoma. Glioma initiating cells (GICs), a small population of stem-like cells implicated in therapeutic resistance and glioblastoma recurrence, have recently been shown to exhibit increased FTH1 expression. We previously demonstrated that FTH1 knockdown enhanced therapeutic sensitivity in an astrocytoma cell line. Therefore, in this study we developed a liposomal formulation to enable the in vitro delivery of FTH1 siRNA in patient xenograft derived GICs from glioblastomas with pro-neural and mesenchymal transcriptional signatures to interrogate the effect of FTH1 downregulation on their radiation sensitivity. Transfection with siRNA decreased FTH1 expression significantly in both GICs. However, there were inherent differences in transfectability between pro-neural and mesenchymal tumor derived GICs, leading us to modify siRNA: liposome ratios for comparable transfection. Moreover, loss of FTH1 expression resulted in increased extracellular lactate dehydrogenase activity, executioner caspase 3/7 induction, substantial mitochondrial damage, diminished mitochondrial mass and reduced cell viability. However, only GICs from pro-neural glioblastoma showed marked increase in radiosensitivity upon FTH1 downregulation demonstrated by decreased cell viability, impaired DNA repair and reduced colony formation subsequent to radiation. In addition, the stemness marker Nestin was downregulated upon FTH1 silencing only in GICs of pro-neural but not mesenchymal origin. Using liposomes as a siRNA delivery system, we established FTH1 as a critical factor for survival in both GIC subtypes as well as a regulator of radioresistance and stemness in pro-neural tumor derived GICs. Our study provides further evidence to support the role of FTH1 as a promising target in glioblastoma.
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Affiliation(s)
- Vagisha Ravi
- Department of Neurosurgery, Penn State College of Medicine, Hershey, Pennsylvania, United States of America
- * E-mail:
| | | | - Thomas Abraham
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, Pennsylvania, United States of America
| | - Becky Slagle-Webb
- Department of Neurosurgery, Penn State College of Medicine, Hershey, Pennsylvania, United States of America
| | - James R. Connor
- Department of Neurosurgery, Penn State College of Medicine, Hershey, Pennsylvania, United States of America
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13
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Black LM, Lever JM, Agarwal A. Renal Inflammation and Fibrosis: A Double-edged Sword. J Histochem Cytochem 2019; 67:663-681. [PMID: 31116067 PMCID: PMC6713973 DOI: 10.1369/0022155419852932] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 04/30/2019] [Indexed: 12/29/2022] Open
Abstract
Renal tissue injury initiates inflammatory and fibrotic processes that occur to promote regeneration and repair. After renal injury, damaged tissue releases cytokines and chemokines, which stimulate activation and infiltration of inflammatory cells to the kidney. Normal tissue repair processes occur simultaneously with activation of myofibroblasts, collagen deposition, and wound healing responses; however, prolonged activation of pro-inflammatory and pro-fibrotic cell types causes excess extracellular matrix deposition. This review focuses on the physiological and pathophysiological roles of specialized cell types, cytokines/chemokines, and growth factors, and their implications in recovery or exacerbation of acute kidney injury.
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Affiliation(s)
- Laurence M Black
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL
| | - Jeremie M Lever
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL
| | - Anupam Agarwal
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL
- Department of Veterans Affairs, The University of Alabama at Birmingham, Birmingham, AL
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14
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Balla J, Balla G, Zarjou A. Ferritin in Kidney and Vascular Related Diseases: Novel Roles for an Old Player. Pharmaceuticals (Basel) 2019; 12:E96. [PMID: 31234273 PMCID: PMC6630272 DOI: 10.3390/ph12020096] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/14/2019] [Accepted: 06/19/2019] [Indexed: 12/12/2022] Open
Abstract
Iron is at the forefront of a number of pivotal biological processes due to its ability to readily accept and donate electrons. However, this property may also catalyze the generation of free radicals with ensuing cellular and tissue toxicity. Accordingly, throughout evolution numerous pathways and proteins have evolved to minimize the potential hazardous effects of iron cations and yet allow for readily available iron cations in a wide variety of fundamental metabolic processes. One of the extensively studied proteins in the context of systemic and cellular iron metabolisms is ferritin. While clinicians utilize serum ferritin to monitor body iron stores and inflammation, it is important to note that the vast majority of ferritin is located intracellularly. Intracellular ferritin is made of two different subunits (heavy and light chain) and plays an imperative role as a safe iron depot. In the past couple of decades our understanding of ferritin biology has remarkably improved. Additionally, a significant body of evidence has emerged describing the significance of the kidney in iron trafficking and homeostasis. Here, we briefly discuss some of the most important findings that relate to the role of iron and ferritin heavy chain in the context of kidney-related diseases and, in particular, vascular calcification, which is a frequent complication of chronic kidney disease.
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Affiliation(s)
- József Balla
- HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, H-4032 Debrecen, Hungary.
- Division of Nephrology, Department of Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary.
| | - György Balla
- HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, H-4032 Debrecen, Hungary.
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary.
| | - Abolfazl Zarjou
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
- Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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15
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de Ruiter MV, Klem R, Luque D, Cornelissen JJLM, Castón JR. Structural nanotechnology: three-dimensional cryo-EM and its use in the development of nanoplatforms for in vitro catalysis. NANOSCALE 2019; 11:4130-4146. [PMID: 30793729 DOI: 10.1039/c8nr09204d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The organization of enzymes into different subcellular compartments is essential for correct cell function. Protein-based cages are a relatively recently discovered subclass of structurally dynamic cellular compartments that can be mimicked in the laboratory to encapsulate enzymes. These synthetic structures can then be used to improve our understanding of natural protein-based cages, or as nanoreactors in industrial catalysis, metabolic engineering, and medicine. Since the function of natural protein-based cages is related to their three-dimensional structure, it is important to determine this at the highest possible resolution if viable nanoreactors are to be engineered. Cryo-electron microscopy (cryo-EM) is ideal for undertaking such analyses within a feasible time frame and at near-native conditions. This review describes how three-dimensional cryo-EM is used in this field and discusses its advantages. An overview is also given of the nanoreactors produced so far, their structure, function, and applications.
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Affiliation(s)
- Mark V de Ruiter
- Department of Biomolecular Nanotechnology, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands.
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16
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Cruz-Bustos T, Ibarrola-Vannucci AK, Díaz-Lozano I, Ramírez JL, Osuna A. Characterization and functionality of two members of the SPFH protein superfamily, prohibitin 1 and 2 in Leishmania major. Parasit Vectors 2018; 11:622. [PMID: 30514373 PMCID: PMC6278115 DOI: 10.1186/s13071-018-3195-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 11/09/2018] [Indexed: 01/01/2023] Open
Abstract
Background Leishmaniasis, a disease caused by parasites of the genus Leishmania, infects roughly 12 million people worldwide, with about two million new cases per year. Prohibitins (PHBs) are highly conserved proteins belonging to the stomatin-prohibitin flotillin-HflC/K (SPFH) protein superfamily. In this study, we examine the potential functions of two proteins of Leishmania major, PHB1 and PHB2, as well as how they might help protect the protozoan against oxidative stress. Results By immunolocalization in the parasite cells, PHB1 appeared in the mitochondria and plasma membrane, whereas PHB2 was grouped in the nucleus. When Leishmania cells were under oxidative stress, PHB1 migrates towards the plasma membrane and the paraxial rod, while PHB2 remained in the nucleus and near the kinetoplast. PHB1 presented higher mRNA levels than PHB2 in the amastigotes and the infective metacyclic forms. The mRNA expression of both prohibitins was affected by the presence of the Fe3+ ion. PHBs inhibited the Fenton reaction, where reactive oxygen species could nick DNA, implying that they play a crucial role in controlling oxidative stress. Conclusions Here, we propose that PHBs may help to protect membranes and DNA against superoxide ions, thus enhancing the survival capacity of the protozoan by controlling the ROS within the phagosome of the macrophages where the parasite multiplies.
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Affiliation(s)
- Teresa Cruz-Bustos
- Department of Parasitology, Faculty of Science, University of Granada, Granada, Spain
| | | | - Isabel Díaz-Lozano
- Department of Parasitology, Faculty of Science, University of Granada, Granada, Spain.,Karolinska Institute, Stockholm, Sweden
| | - José Luis Ramírez
- Instituto de Estudios Avanzados, (IDEA), Caracas, Venezuela.,Instituto de Biología Experimental, Universidad Central de Venezuela, Caracas, Venezuela
| | - A Osuna
- Department of Parasitology, Faculty of Science, University of Granada, Granada, Spain. .,Molecular Parasitology Research Group (CTS-183), Institute of Biotechnology, University of Granada, Granada, Spain.
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17
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Cao M, Mao J, Duan X, Lu L, Zhang F, Lin B, Chen M, Zheng C, Zhang X, Shen J. In vivo tracking of the tropism of mesenchymal stem cells to malignant gliomas using reporter gene-based MR imaging. Int J Cancer 2017; 142:1033-1046. [PMID: 29047121 DOI: 10.1002/ijc.31113] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 09/13/2017] [Accepted: 10/12/2017] [Indexed: 12/17/2022]
Abstract
Mesenchymal stem cells (MSCs) have emerged as a promising cellular vehicle for gene therapy of malignant gliomas due to their property of tumor tropism. However, MSCs may show bidirectional and divergent effects on tumor growth. Therefore, a robust surveillance system with a capacity for noninvasive monitoring of the homing, distribution and fate of stem cells in vivo is highly desired for developing stem cell-based gene therapies for tumors. In this study, we used ferritin gene-based magnetic resonance imaging (MRI) to track the tumor tropism of MSCs in a rat orthotopic xenograft model of malignant glioma. MSCs were transduced with lentiviral vectors expressing ferritin heavy chain (FTH) and enhanced green fluorescent protein (eGFP). Intra-arterial, intravenous and intertumoral injections of these FTH transgenic MSCs (FTH-MSCs) were performed in rats bearing intracranial orthotopic C6 gliomas. The FTH-MSCs were detected as hypointense signals on T2- and T2*-weighted images on a 3.0 T clinical MRI. After intra-arterial injection, 17% of FTH-MSCs migrated toward the tumor and gradually diffused throughout the orthotopic glioma. This dynamic process could be tracked in vivo by MRI up to 10 days of follow-up, as confirmed by histology. Moreover, the tumor tropism of MSCs showed no appreciable impact on the progression of the tumor. These results suggest that FTH reporter gene-based MRI can be used to reliably track the tropism and fate of MSCs after their systemic transplantation in orthotopic gliomas. This real-time in vivo tracking system will facilitate the future development of stem cell-based therapies for malignant gliomas.
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Affiliation(s)
- Minghui Cao
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Jiaji Mao
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Xiaohui Duan
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Liejing Lu
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Fang Zhang
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Bingling Lin
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Meiwei Chen
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Chushan Zheng
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Xiang Zhang
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
| | - Jun Shen
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510120, China
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18
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H-Ferritin-nanocaged olaparib: a promising choice for both BRCA-mutated and sporadic triple negative breast cancer. Sci Rep 2017; 7:7505. [PMID: 28790402 PMCID: PMC5548799 DOI: 10.1038/s41598-017-07617-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 06/29/2017] [Indexed: 12/27/2022] Open
Abstract
Poly(ADP-ribose) polymerase (PARP) inhibitors represent a promising strategy toward the treatment of triple-negative breast cancer (TNBC), which is often associated to genomic instability and/or BRCA mutations. However, clinical outcome is controversial and no benefits have been demonstrated in wild type BRCA cancers, possibly due to poor drug bioavailability and low nuclear delivery. In the attempt to overcome these limitations, we have developed H-Ferritin nanoformulated olaparib (HOla) and assessed its anticancer efficacy on both BRCA-mutated and non-mutated TNBC cells. We exploited the natural tumor targeting of H-Ferritin, which is mediated by the transferrin receptor-1 (TfR1), and its physiological tropism toward cell nucleus. TNBC cell lines over-expressing TfR-1 were successfully recognized by H-Ferritin, displaying a fast internalization into the cells. HOla induced remarkable cytotoxic effect in cancer cells, exhibiting 1000-fold higher anticancer activity compared to free olaparib (Ola). Accordingly, HOla treatment enhanced PARP-1 cleavage, DNA double strand breaks and Ola delivery into the nuclear compartment. Our findings suggest that H-Ferritin nanoformulation strongly enhances cytotoxic efficacy of Ola as a stand-alone therapy in both BRCA-mutated and wild type TNBC cells, by promoting targeted nuclear delivery.
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19
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Robinson I, Yang Y, Zhang F, Lynch C, Yusuf M, Cloetens P. Nuclear incorporation of iron during the eukaryotic cell cycle. JOURNAL OF SYNCHROTRON RADIATION 2016; 23:1490-1497. [PMID: 27787255 PMCID: PMC5082466 DOI: 10.1107/s1600577516012807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 08/08/2016] [Indexed: 05/31/2023]
Abstract
Scanning X-ray fluorescence microscopy has been used to probe the distribution of S, P and Fe within cell nuclei. Nuclei, which may have originated at different phases of the cell cycle, are found to show very different levels of Fe present with a strongly inhomogeneous distribution. P and S signals, presumably from DNA and associated nucleosomes, are high and relatively uniform across all the nuclei; these agree with X-ray phase contrast projection microscopy images of the same samples. Possible reasons for the Fe incorporation are discussed.
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Affiliation(s)
- Ian Robinson
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0FA, UK
- London Centre for Nanotechnology, University College London, London WC1E 6BT, UK
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Yang Yang
- ESRF – The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Fucai Zhang
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0FA, UK
- London Centre for Nanotechnology, University College London, London WC1E 6BT, UK
| | - Christophe Lynch
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0FA, UK
- London Centre for Nanotechnology, University College London, London WC1E 6BT, UK
| | - Mohammed Yusuf
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0FA, UK
- London Centre for Nanotechnology, University College London, London WC1E 6BT, UK
| | - Peter Cloetens
- ESRF – The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
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20
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Ong DST, Lihui Wang, Yong Zhu, Ho B, Jeak Ling Ding. The response of ferritin to LPS and acute phase of Pseudomonas infection. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519050110050301] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Plasma ferritin is an important extracellular iron storage molecule, whose concentration increases drastically in cancer and infection. During infection, the pathogen usurps host iron for its survival and pathogenicity; hence, maintenance of the plasma ferritin level during infection is a crucial host defence mechanism. In this study, the horseshoe crab plasma ferritin complex was purified, characterized, and its involvement in innate immune defence was investigated. The plasma ferritin appears as a 21-kDa subunit on SDS-PAGE. Full-length ferritin-H cDNAs (CrFer-H1 and CrFer-H2) were cloned. Analysis of the 5′ UTR indicates the existence of a functional iron-response element, suggesting that both the CrFer-H genes may be post-transcriptionally regulated. Northern analysis shows that the CrFer-H is ubiquitously expressed. Within 3 h of lipopolysaccharide challenge, the gene is up-regulated by > 12-fold. In contrast, iron-loading did not result in any significant change. When challenged with Pseudomonas aeruginosa , the plasma ferritin disappeared between 6—48 h and re-appeared thereafter, suggesting that during infection, ferritin may be concealed intracellularly as it withholds iron from the invading pathogen. Taken together, these results provide insights into the importance of plasma ferritin as an evolutionarily conserved molecule for the iron-withholding strategy of innate immunity.
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Affiliation(s)
| | - Lihui Wang
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Yong Zhu
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Bow Ho
- Department of Microbiology, National University of Singapore, Singapore
| | - Jeak Ling Ding
- Department of Biological Sciences, National University of Singapore, Singapore,
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21
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Potentiation of hydrogen peroxide toxicity: From catalase inhibition to stable DNA-iron complexes. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2016; 773:274-281. [PMID: 28927535 DOI: 10.1016/j.mrrev.2016.08.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/29/2016] [Indexed: 12/15/2022]
Abstract
Hydrogen peroxide (H2O2) is unique among general toxins, because it is stable in abiotic environments at ambient temperature and neutral pH, yet rapidly kills any type of cells by producing highly-reactive hydroxyl radicals. This life-specific reactivity follows the distribution of soluble iron, Fe(II) (which combines with H2O2 to form the famous Fenton's reagent),Fe(II) is concentrated inside cells, but is virtually absent outside them. Because of the immediate danger of H2O2, all cells have powerful H2O2 scavengers, the equally famous catalases, which enable cells to survive thousand-fold higher concentrations of H2O2 and, in combination with adequate movement of H2O2 across membranes, make the killing H2O2 concentrations virtually impractical to generate in vivo. And yet, low concentrations of H2O2 are somehow used as an efficient biological weapon. Here we review several examples of how cells potentiate H2O2 toxicity with other chemicals. At first, these potentiators were thought to simply inhibit catalases, but recent findings with cyanide suggest that potentiators mostly promote the other side of Fenton's reaction, recruiting iron from cell depots into stable DNA-iron complexes that, in the presence of elevated H2O2, efficiently break duplex DNA, pulverizing the chromosome. This multifaceted potentiation of H2O2 toxicity results in robust and efficient killing.
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22
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Li L, Zhang L, Knez M. Comparison of two endogenous delivery agents in cancer therapy: Exosomes and ferritin. Pharmacol Res 2016; 110:1-9. [DOI: 10.1016/j.phrs.2016.05.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 04/07/2016] [Accepted: 05/03/2016] [Indexed: 12/21/2022]
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23
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Truffi M, Fiandra L, Sorrentino L, Monieri M, Corsi F, Mazzucchelli S. Ferritin nanocages: A biological platform for drug delivery, imaging and theranostics in cancer. Pharmacol Res 2016; 107:57-65. [DOI: 10.1016/j.phrs.2016.03.002] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 02/24/2016] [Accepted: 03/02/2016] [Indexed: 12/16/2022]
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24
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Bolisetty S, Zarjou A, Hull TD, Traylor A, Perianayagam A, Joseph R, Kamal AI, Arosio P, Soares MP, Jeney V, Balla J, George JF, Agarwal A. Macrophage and epithelial cell H-ferritin expression regulates renal inflammation. Kidney Int 2015; 88:95-108. [PMID: 25874599 PMCID: PMC4490000 DOI: 10.1038/ki.2015.102] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 02/16/2015] [Accepted: 02/19/2015] [Indexed: 12/14/2022]
Abstract
Inflammation culminating in fibrosis contributes to progressive kidney disease. Cross-talk between the tubular epithelium and interstitial cells regulates inflammation by a coordinated release of cytokines and chemokines. Here we studied the role of heme oxygenase-1 (HO-1) and the heavy subunit of ferritin (FtH) in macrophage polarization and renal inflammation. Deficiency in HO-1 was associated with increased FtH expression, accumulation of macrophages with a dysregulated polarization profile, and increased fibrosis following unilateral ureteral obstruction in mice: a model of renal inflammation and fibrosis. Macrophage polarization in vitro was predominantly dependent on FtH expression in isolated bone marrow-derived mouse monocytes. Using transgenic mice with conditional deletion of FtH in the proximal tubules (FtH(PT-/-)) or myeloid cells (FtH(LysM-/-)), we found that myeloid FtH deficiency did not affect polarization or accumulation of macrophages in the injured kidney compared with wild-type (FtH(+/+)) controls. However, tubular FtH deletion led to a marked increase in proinflammatory macrophages. Furthermore, injured kidneys from FtH(PT-/-) mice expressed significantly higher levels of inflammatory chemokines and fibrosis compared with kidneys from FtH(+/+) and FtH(LysM-/-) mice. Thus, there are differential effects of FtH in macrophages and epithelial cells, which underscore the critical role of FtH in tubular-macrophage cross-talk during kidney injury.
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Affiliation(s)
- Subhashini Bolisetty
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Abolfazl Zarjou
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Travis D. Hull
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Amie Traylor
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Anjana Perianayagam
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Reny Joseph
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ahmed I Kamal
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Paolo Arosio
- Dipartimento Materno Infantile e Tecnologie Biomediche, University of Brescia, Brescia, Italy
| | - Miguel P Soares
- Inflammation Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Viktoria Jeney
- Department of Medicine, University of Debrecen, Debrecen, Hungary
- MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - Jozsef Balla
- Department of Medicine, University of Debrecen, Debrecen, Hungary
- MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - James F. George
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Anupam Agarwal
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Veterans Affairs, Birmingham, Alabama, USA
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25
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Zhang L, Li L, Di Penta A, Carmona U, Yang F, Schöps R, Brandsch M, Zugaza JL, Knez M. H-Chain Ferritin: A Natural Nuclei Targeting and Bioactive Delivery Nanovector. Adv Healthc Mater 2015; 4:1305-10. [PMID: 25973730 DOI: 10.1002/adhm.201500226] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 04/22/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Lianbing Zhang
- CIC nanoGUNE; Tolosa Hiribidea 76 20018 Donostia-San Sebastián Spain
| | - Le Li
- CIC nanoGUNE; Tolosa Hiribidea 76 20018 Donostia-San Sebastián Spain
| | - Alessandra Di Penta
- Achucarro Basque Center for Neuroscience, Building 205; Bizkaia Science and Technology Park; 48170 Zamudio Spain
- ThreeRLabs, Building 804; Bizkaia Science and Technology Park; 48170 Zamudio Spain
| | - Unai Carmona
- CIC nanoGUNE; Tolosa Hiribidea 76 20018 Donostia-San Sebastián Spain
| | - Fan Yang
- CIC nanoGUNE; Tolosa Hiribidea 76 20018 Donostia-San Sebastián Spain
| | - Regina Schöps
- Institute of Chemistry; Martin-Luther-University Halle-Wittenberg; 06099 Halle Germany
| | - Matthias Brandsch
- Biozentrum; Martin-Luther-University Halle-Wittenberg; 06120 Halle Germany
| | - José L. Zugaza
- Achucarro Basque Center for Neuroscience, Building 205; Bizkaia Science and Technology Park; 48170 Zamudio Spain
- Department of Genetics; Physical Anthropology and Animal Physiology; University of the Basque Country; 48940 Leioa Spain
- IKERBASQUE; Basque Foundation for Science; Maria Diaz de Haro 3 48013 Bilbao Spain
| | - Mato Knez
- CIC nanoGUNE; Tolosa Hiribidea 76 20018 Donostia-San Sebastián Spain
- IKERBASQUE; Basque Foundation for Science; Maria Diaz de Haro 3 48013 Bilbao Spain
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Ruzzenenti P, Asperti M, Mitola S, Crescini E, Maccarinelli F, Gryzik M, Regoni M, Finazzi D, Arosio P, Poli M. The Ferritin-Heavy-Polypeptide-Like-17 (FTHL17) gene encodes a ferritin with low stability and no ferroxidase activity and with a partial nuclear localization. Biochim Biophys Acta Gen Subj 2015; 1850:1267-73. [DOI: 10.1016/j.bbagen.2015.02.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Revised: 02/13/2015] [Accepted: 02/26/2015] [Indexed: 12/12/2022]
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Jühlen R, Idkowiak J, Taylor AE, Kind B, Arlt W, Huebner A, Koehler K. Role of ALADIN in human adrenocortical cells for oxidative stress response and steroidogenesis. PLoS One 2015; 10:e0124582. [PMID: 25867024 PMCID: PMC4395102 DOI: 10.1371/journal.pone.0124582] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 03/04/2015] [Indexed: 12/11/2022] Open
Abstract
Triple A syndrome is caused by mutations in AAAS encoding the protein ALADIN. We investigated the role of ALADIN in the human adrenocortical cell line NCI-H295R1 by either over-expression or down-regulation of ALADIN. Our findings indicate that AAAS knock-down induces a down-regulation of genes coding for type II microsomal cytochrome P450 hydroxylases CYP17A1 and CYP21A2 and their electron donor enzyme cytochrome P450 oxidoreductase, thereby decreasing biosynthesis of precursor metabolites required for glucocorticoid and androgen production. Furthermore we demonstrate that ALADIN deficiency leads to increased susceptibility to oxidative stress and alteration in redox homeostasis after paraquat treatment. Finally, we show significantly impaired nuclear import of DNA ligase 1, aprataxin and ferritin heavy chain 1 in ALADIN knock-down cells. We conclude that down-regulating ALADIN results in decreased oxidative stress response leading to alteration in steroidogenesis, highlighting our knock-down cell model as an important in-vitro tool for studying the adrenal phenotype in triple A syndrome.
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Affiliation(s)
- Ramona Jühlen
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Jan Idkowiak
- Centre for Endocrinology, Diabetes and Metabolism, School of Clinical & Experimental Medicine, University of Birmingham, United Kingdom
| | - Angela E. Taylor
- Centre for Endocrinology, Diabetes and Metabolism, School of Clinical & Experimental Medicine, University of Birmingham, United Kingdom
| | - Barbara Kind
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Wiebke Arlt
- Centre for Endocrinology, Diabetes and Metabolism, School of Clinical & Experimental Medicine, University of Birmingham, United Kingdom
| | - Angela Huebner
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Katrin Koehler
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Germany
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28
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Mahaseth T, Kuzminov A. Cyanide enhances hydrogen peroxide toxicity by recruiting endogenous iron to trigger catastrophic chromosomal fragmentation. Mol Microbiol 2015; 96:349-67. [PMID: 25598241 DOI: 10.1111/mmi.12938] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2015] [Indexed: 11/28/2022]
Abstract
Hydrogen peroxide (HP) or cyanide (CN) are bacteriostatic at low-millimolar concentrations for growing Escherichia coli, whereas CN + HP mixture is strongly bactericidal. We show that this synergistic toxicity is associated with catastrophic chromosomal fragmentation. Since CN alone does not kill at any concentration, while HP alone kills at 20 mM, CN must potentiate HP poisoning. The CN + HP killing is blocked by iron chelators, suggesting Fenton's reaction. Indeed, we show that CN enhances plasmid DNA relaxation due to Fenton's reaction in vitro. However, mutants with elevated iron or HP pools are not acutely sensitive to HP-alone treatment, suggesting that, in addition, in vivo CN recruits iron from intracellular depots. We found that part of the CN-recruited iron pool is managed by ferritin and Dps: ferritin releases iron on cue from CN, while Dps sequesters it, quelling Fenton's reaction. We propose that disrupting intracellular iron trafficking is a common strategy employed by the immune system to kill microbes.
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Affiliation(s)
- Tulip Mahaseth
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801-3709, USA
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29
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Ma Y, Abbate V, Hider RC. Iron-sensitive fluorescent probes: monitoring intracellular iron pools. Metallomics 2015; 7:212-22. [DOI: 10.1039/c4mt00214h] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Bellini M, Mazzucchelli S, Galbiati E, Sommaruga S, Fiandra L, Truffi M, Rizzuto MA, Colombo M, Tortora P, Corsi F, Prosperi D. Protein nanocages for self-triggered nuclear delivery of DNA-targeted chemotherapeutics in Cancer Cells. J Control Release 2014; 196:184-96. [PMID: 25312541 DOI: 10.1016/j.jconrel.2014.10.002] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 09/30/2014] [Accepted: 10/03/2014] [Indexed: 01/10/2023]
Abstract
A genetically engineered apoferritin variant consisting of 24 heavy-chain subunits (HFn) was produced to achieve a cumulative delivery of an antitumor drug, which exerts its cytotoxic action by targeting the DNA at the nucleus of human cancer cells with subcellular precision. The rationale of our approach is based on exploiting the natural arsenal of defense of cancer cells to stimulate them to recruit large amounts of HFn nanoparticles loaded with doxorubicin inside their nucleus in response to a DNA damage, which leads to a programmed cell death. After demonstrating the selectivity of HFn for representative cancer cells compared to healthy fibroblasts, doxorubicin-loaded HFn was used to treat the cancer cells. The results from confocal microscopy and DNA damage assays proved that loading of doxorubicin in HFn nanoparticles increased the nuclear delivery of the drug, thus enhancing doxorubicin efficacy. Doxorubicin-loaded HFn acts as a "Trojan Horse": HFn was internalized in cancer cells faster and more efficiently compared to free doxorubicin, then promptly translocated into the nucleus following the DNA damage caused by the partial release in the cytoplasm of encapsulated doxorubicin. This self-triggered translocation mechanism allowed the drug to be directly released in the nuclear compartment, where it exerted its toxic action. This approach was reliable and straightforward providing an antiproliferative effect with high reproducibility. The particular self-assembling nature of HFn nanocage makes it a versatile and tunable nanovector for a broad range of molecules suitable both for detection and treatment of cancer cells.
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Affiliation(s)
- Michela Bellini
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Serena Mazzucchelli
- Dipartimento di Scienze Biomediche e Cliniche "Luigi Sacco", Università di Milano, Ospedale L. Sacco, Via G.B. Grassi 74, 20157 Milano, Italy.
| | - Elisabetta Galbiati
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Silvia Sommaruga
- Dipartimento di Scienze Biomediche e Cliniche "Luigi Sacco", Università di Milano, Ospedale L. Sacco, Via G.B. Grassi 74, 20157 Milano, Italy
| | - Luisa Fiandra
- Dipartimento di Scienze Biomediche e Cliniche "Luigi Sacco", Università di Milano, Ospedale L. Sacco, Via G.B. Grassi 74, 20157 Milano, Italy
| | - Marta Truffi
- Dipartimento di Scienze Biomediche e Cliniche "Luigi Sacco", Università di Milano, Ospedale L. Sacco, Via G.B. Grassi 74, 20157 Milano, Italy
| | - Maria A Rizzuto
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Miriam Colombo
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Paolo Tortora
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Fabio Corsi
- Dipartimento di Scienze Biomediche e Cliniche "Luigi Sacco", Università di Milano, Ospedale L. Sacco, Via G.B. Grassi 74, 20157 Milano, Italy
| | - Davide Prosperi
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy.
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Mendes-Jorge L, Ramos D, Valença A, López-Luppo M, Pires VMR, Catita J, Nacher V, Navarro M, Carretero A, Rodriguez-Baeza A, Ruberte J. L-ferritin binding to scara5: a new iron traffic pathway potentially implicated in retinopathy. PLoS One 2014; 9:e106974. [PMID: 25259650 PMCID: PMC4178024 DOI: 10.1371/journal.pone.0106974] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 08/05/2014] [Indexed: 01/08/2023] Open
Abstract
Iron is essential in the retina because the heme-containing enzyme guanylate cyclase modulates phototransduction in rods and cones. Transferrin endocytosis is the classical pathway for obtaining iron from the blood circulation in the retina. However, the iron storage protein ferritin has been also recently proposed as an iron carrier. In this study, the presence of Scara5 and its binding to L-ferritin was investigated in the retina. Our results showed that Scara5, the specific receptor for L-ferritin, was expressed in mouse and human retinas in many cell types, including endothelial cells. Furthermore, we showed that intravenously injected ferritin crossed the blood retinal barrier through L-ferritin binding to Scara5 in endothelial cells. Thus, suggesting the existence of a new pathway for iron delivery and trafficking in the retina. In a murine model of photoreceptor degeneration, Scara5 was downregulated, pointing out this receptor as a potential player implicated in retinopathy and also as a possible therapeutic target.
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Affiliation(s)
- Luísa Mendes-Jorge
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Department of Morphology and Function, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - David Ramos
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Andreia Valença
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal
| | - Mariana López-Luppo
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain; Department of Animal Health and Anatomy, School of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Virgínia Maria Rico Pires
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal
| | - Joana Catita
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Victor Nacher
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain; Department of Animal Health and Anatomy, School of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Marc Navarro
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain; Department of Animal Health and Anatomy, School of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Ana Carretero
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain; Department of Animal Health and Anatomy, School of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Alfonso Rodriguez-Baeza
- Department of Morphological Sciences, School of Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Jesús Ruberte
- Interdisciplinary Centre of Research in Animal Health, Faculty of Veterinary Medicine, Universidade de Lisboa, Lisbon, Portugal; Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain; Department of Animal Health and Anatomy, School of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Barcelona, Spain
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32
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Rajiah IR, Skepper J. Differential localisation of PARP-1 N-terminal fragment in PARP-1(+/+) and PARP-1(-/-) murine cells. Mol Cells 2014; 37:526-31. [PMID: 25078451 PMCID: PMC4132304 DOI: 10.14348/molcells.2014.0077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/27/2014] [Accepted: 07/07/2014] [Indexed: 11/27/2022] Open
Abstract
Human PARP family consists of 17 members of which PARP-1 is a prominent member and plays a key role in DNA repair pathways. It has an N-terminal DNA-binding domain (DBD) encompassing the nuclear localisation signal (NLS), central automodification domain and C-terminal catalytic domain. PARP-1 accounts for majority of poly-(ADP-ribose) polymer synthesis that upon binding to numerous proteins including PARP itself modulates their activity. Reduced PARP-1 activity in ageing human samples and its deficiency leading to telomere shortening has been reported. Hence for cell survival, maintenance of genomic integrity and longevity presence of intact PARP-1 in the nucleus is paramount. Although localisation of full-length and truncated PARP-1 in PARP-1 proficient cells is well documented, subcellular distribution of PARP-1 fragments in the absence of endogenous PARP-1 is not known. Here we report the differential localisation of PARP-1 N-terminal fragment encompassing NLS in PARP-1(+/+) and PARP-1(-/-) mouse embryo fibroblasts by live imaging of cells transiently expressing EGFP tagged fragment. In PARP-1(+/+) cells the fragment localises to the nuclei presenting a granular pattern. Furthermore, it is densely packaged in the midsections of the nucleus. In contrast, the fragment localises exclusively to the cytoplasm in PARP-1(-/-) cells. Flourescence intensity analysis further confirmed this observation indicating that the N-terminal fragment requires endogenous PARP-1 for its nuclear transport. Our study illustrates the trafficking role of PARP-1 independently of its enzymatic activity and highlights the possibility that full-length PARP-1 may play a key role in the nuclear transport of its siblings and other molecules.
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Affiliation(s)
- Ida Rachel Rajiah
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 1QP, United Kingdom
| | - Jeremy Skepper
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 1QP, United Kingdom
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Dunn LL, Midwinter RG, Ni J, Hamid HA, Parish CR, Stocker R. New insights into intracellular locations and functions of heme oxygenase-1. Antioxid Redox Signal 2014; 20:1723-42. [PMID: 24180287 PMCID: PMC3961787 DOI: 10.1089/ars.2013.5675] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 11/01/2013] [Indexed: 01/09/2023]
Abstract
SIGNIFICANCE Heme oxygenase-1 (HMOX1) plays a critical role in the protection of cells, and the inducible enzyme is implicated in a spectrum of human diseases. The increasing prevalence of cardiovascular and metabolic morbidities, for which current treatment approaches are not optimal, emphasizes the necessity to better understand key players such as HMOX1 that may be therapeutic targets. RECENT ADVANCES HMOX1 is a dynamic protein that can undergo post-translational and structural modifications which modulate HMOX1 function. Moreover, trafficking from the endoplasmic reticulum to other cellular compartments, including the nucleus, highlights that HMOX1 may play roles other than the catabolism of heme. CRITICAL ISSUES The ability of HMOX1 to be induced by a variety of stressors, in an equally wide variety of tissues and cell types, represents an obstacle for the therapeutic exploitation of the enzyme. Any capacity to modulate HMOX1 in cardiovascular and metabolic diseases should be tempered with an appreciation that HMOX1 may have an impact on cancer. Moreover, the potential for heme catabolism end products, such as carbon monoxide, to amplify the HMOX1 stress response should be considered. FUTURE DIRECTIONS A more complete understanding of HMOX1 modifications and the properties that they impart is necessary. Delineating these parameters will provide a clearer picture of the opportunities to modulate HMOX1 in human disease.
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Affiliation(s)
- Louise L. Dunn
- Vascular Biology Division, The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, The University of New South Wales, Sydney, Australia
| | | | - Jun Ni
- Vascular Biology Division, The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, The University of New South Wales, Sydney, Australia
| | - Hafizah A. Hamid
- Vascular Biology Division, The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, The University of New South Wales, Sydney, Australia
| | - Christopher R. Parish
- John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Roland Stocker
- Vascular Biology Division, The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, The University of New South Wales, Sydney, Australia
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Elvitigala DAS, Premachandra HKA, Whang I, Oh MJ, Jung SJ, Park CJ, Lee J. A teleostean counterpart of ferritin M subunit from rock bream (Oplegnathus fasciatus): an active constituent in iron chelation and DNA protection against oxidative damage, with a modulated expression upon pathogen stress. FISH & SHELLFISH IMMUNOLOGY 2013; 35:1455-1465. [PMID: 23978565 DOI: 10.1016/j.fsi.2013.08.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 08/08/2013] [Accepted: 08/14/2013] [Indexed: 06/02/2023]
Abstract
Ferritins are biological iron chelators that can sequestrate excess iron to maintain iron homeostasis in the body. Ferritins basically consist of 2 types of subunits, designated as H and L. However, another new subunit, ferritin "M" which possesses characteristic features of both the H and L subunits, was recently identified in lower vertebrates, mostly in fish. In this study, a ferritin M-like subunit from rock bream (Oplegnathus fasciatus) (RbFerM) was characterized at the molecular level, and its transcriptional profile was analyzed in healthy fish, as well as in pathogen- and mitogen-stimulated fish. Furthermore, its functional properties were evaluated using the recombinant protein. The complete coding sequence of RbFerM was 528 bp in length, encoding a 176-amino acid peptide with a calculated molecular mass of 20 kDa. In silico analysis of RbFerM revealed that it has features similar to both the mammalian ferritin subunits, H and L. Phylogenetic analysis depicted the higher evolutionary proximity of RbFerM with its fish counterparts. Quantitative real time polymerase chain reaction (PCR) analysis detected a ubiquitous transcriptional profile of RbFerM in selected tissues of rock bream, in which more pronounced expression was observed in blood and liver tissues. Significant transcriptional inductions of RbFerM were detected in liver tissues upon lipopolysaccharides (LPS), Edwardsiella tarda, Streptococcus iniae, and rock bream irido virus (RBIV) exposures in time-course immune-challenge experiments. The purified recombinant protein of RbFerM demonstrated detectable iron chelating activity that varied with the temperature. Moreover, the recombinant RbFerM rendered a detectable protection effect against iron (II) and H2O2-mediated DNA damage.
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Affiliation(s)
- Don Anushka Sandaruwan Elvitigala
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea
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35
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Zarjou A, Bolisetty S, Joseph R, Traylor A, Apostolov EO, Arosio P, Balla J, Verlander J, Darshan D, Kuhn LC, Agarwal A. Proximal tubule H-ferritin mediates iron trafficking in acute kidney injury. J Clin Invest 2013; 123:4423-34. [PMID: 24018561 DOI: 10.1172/jci67867] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 07/18/2013] [Indexed: 12/30/2022] Open
Abstract
Ferritin plays a central role in iron metabolism and is made of 24 subunits of 2 types: heavy chain and light chain. The ferritin heavy chain (FtH) has ferroxidase activity that is required for iron incorporation and limiting toxicity. The purpose of this study was to investigate the role of FtH in acute kidney injury (AKI) and renal iron handling by using proximal tubule-specific FtH-knockout mice (FtH(PT-/-) mice). FtH(PT-/-) mice had significant mortality, worse structural and functional renal injury, and increased levels of apoptosis in rhabdomyolysis and cisplatin-induced AKI, despite significantly higher expression of heme oxygenase-1, an antioxidant and cytoprotective enzyme. While expression of divalent metal transporter-1 was unaffected, expression of ferroportin (FPN) was significantly lower under both basal and rhabdomyolysis-induced AKI in FtH(PT-/-) mice. Apical localization of FPN was disrupted after AKI to a diffuse cytosolic and basolateral pattern. FtH, regardless of iron content and ferroxidase activity, induced FPN. Interestingly, urinary levels of the iron acceptor proteins neutrophil gelatinase-associated lipocalin, hemopexin, and transferrin were increased in FtH(PT-/-) mice after AKI. These results underscore the protective role of FtH and reveal the critical role of proximal tubule FtH in iron trafficking in AKI.
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36
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Chekhun VF, Lukyanova NY, Burlaka CACP, Bezdenezhnykh NA, Shpyleva SI, Tryndyak VP, Beland FA, Pogribny IP. Iron metabolism disturbances in the MCF-7 human breast cancer cells with acquired resistance to doxorubicin and cisplatin. Int J Oncol 2013; 43:1481-6. [PMID: 23969999 DOI: 10.3892/ijo.2013.2063] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 06/24/2013] [Indexed: 01/11/2023] Open
Abstract
The development of resistance of cancer cells to therapeutic agents is the major obstacle in the successful treatment of breast cancer and the main cause of breast cancer recurrence. The results of several studies have demonstrated an important role of altered cellular iron metabolism in the progression of breast cancer and suggested that iron metabolism may be involved in the acquisition of a cancer cell drug-resistant phenotype. In the present study, we show that human MCF-7 breast cancer cells with an acquired resistance to the chemotherapeutic drugs doxorubicin (MCF-7/DOX) and cisplatin (MCF-7/CDDP) exhibited substantial alterations in the intracellular iron content and levels of iron-regulatory proteins involved in the cellular uptake, storage and export of iron, especially in profoundly increased levels of ferritin light chain (FTL) protein. The increased levels of FTL in breast cancer indicate that FTL may be used as a diagnostic and prognostic marker for breast cancer. Additionally, we demonstrate that targeted downregulation of FTL protein by the microRNA miR-133a increases sensitivity of MCF-7/DOX and MCF-7/CDDP cells to doxorubicin and cisplatin. These results suggest that correction of iron metabolism abnormalities may substantially improve the efficiency of breast cancer treatment.
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Affiliation(s)
- Vasyl F Chekhun
- Department of Mechanisms of Anticancer Therapy, R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, Kiev, Ukraine
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37
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Wu J, Sowinska A, Huang X, Klein CB, Pelle E, Frenkel K. Impairment of antioxidant defenses as a contributor to arsenite-induced cell transformation. Biometals 2012; 25:927-37. [PMID: 22692362 DOI: 10.1007/s10534-012-9559-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 05/11/2012] [Indexed: 11/26/2022]
Abstract
Arsenite (As) causes transformation of human osteogenic sarcoma cells (HOS) when applied continuously at low doses (0.1-0.5 μM) during 8-weeks of exposure. However, the mechanisms by which As transforms human cells are not known. We investigated whether alterations occurred in gene expression and protein levels of antioxidant defense proteins, such as superoxide dismutase 1 (SOD1) and ferritin. In comparison to control HOS cells, 0.1 μM As induced greater cell proliferation and decreased anti-oxidant defenses. The tumor suppressor protein p53 was also decreased at both mRNA and protein levels. Further, pig3 (p53-induced-gene 3), a homolog of NQO1 (NADPH quinone oxidoreductase 1), was also down-regulated after 8 weeks of As challenge. The treatment of HOS cells with dicumarol, a NQO1 inhibitor, caused a dose-dependent decline in p53 protein levels, proving the effect of an antioxidant enzyme on p53 expression and, potentially, down-stream processes. Caffeic acid phenethyl ester, an antioxidant, prevented the As-induced decreases in SOD1, p53, and ferritin mRNA and protein levels. SOD1, p53 and ferritin levels were inversely related to As-induced cell proliferation. Cumulatively, these results strongly suggest that impairment in antioxidant defenses contributes to As-induced human cell transformation and that the p53 pathway is involved in the process.
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Affiliation(s)
- Jing Wu
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, USA.
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38
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Catoire H, Dion PA, Xiong L, Amari M, Gaudet R, Girard SL, Noreau A, Gaspar C, Turecki G, Montplaisir JY, Parker JA, Rouleau GA. Restless legs syndrome-associated MEIS1 risk variant influences iron homeostasis. Ann Neurol 2011; 70:170-5. [PMID: 21710629 DOI: 10.1002/ana.22435] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 03/02/2011] [Accepted: 03/22/2011] [Indexed: 11/10/2022]
Abstract
Restless legs syndrome (RLS) is a frequent sleep disorder that is linked to disturbed iron homeostasis. Genetic studies identified MEIS1 as an RLS-predisposing gene, where the RLS risk haplotype is associated with decreased MEIS1 mRNA and protein expression. We show here that RNA interference treatment of the MEIS1 worm orthologue increases ferritin expression in Caenorhabditis elegans and that the RLS-associated haplotype leads to increased expression of ferritin and DMT1 in RLS brain tissues. Additionally, human cells cultured under iron-deficient conditions show reduced MEIS1 expression. Our data establish a link between the RLS MEIS1 gene and iron metabolism.
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Affiliation(s)
- Hélène Catoire
- Centre of Excellence in Neuromics, CHUM Research Centre, University of Montreal, Montreal, Quebec, Canada
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Liu X, Madhankumar AB, Slagle-Webb B, Sheehan JM, Surguladze N, Connor JR. Heavy chain ferritin siRNA delivered by cationic liposomes increases sensitivity of cancer cells to chemotherapeutic agents. Cancer Res 2011; 71:2240-9. [PMID: 21385903 DOI: 10.1158/0008-5472.can-10-1375] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Approximately half of all gliomas are resistant to chemotherapy, and new therapeutic strategies are urgently needed to treat this cancer. We hypothesized that disrupting iron homeostasis in glioma cells could block tumor growth, based on an acute requirement for high levels of iron to meet energy requirements associated with their rapid growth. Ferritin is best known as an intracellular iron storage protein, but it also localizes to tumor cell nuclei where it seems to protect DNA from oxidative damage and to promote transcription. In this study, we hypothesize that silencing the H-ferritin (heavy chain ferritin) gene could increase tumor sensitivity to chemotoxins. To test this hypothesis, H-ferritin siRNA was delivered to several human cancer cell lines by using cationic liposomes (C-liposome). H-ferritin siRNA decreased protein expression by 80% within 48 hours, and this decrease was associated with more than 50% decrease in the LD(50) for DNA-alkylating agent carmustine (BCNU), which is commonly used to treat glioma in clinic. In a subcutaneous mouse model of human glioma, intratumoral injections of liposomes containing H-ferritin siRNA reduced the effective dose of BCNU needed for tumor suppression by more than 50%. A plasmid supercoil relaxation assay showed that H-ferritin specifically and directly protected DNA from BCNU treatment. H-ferritin siRNA additionally seemed to increase apoptosis in glioma cells in vitro upon H-ferritin knockdown. Overall, our results illustrate how silencing H-ferritin can effectively sensitize tumors to chemotherapy and also show the ability of C-liposomes to serve as a novel in vivo delivery tool for siRNAs.
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Affiliation(s)
- Xiaoli Liu
- Department of Neurosurgery, Penn State Cancer Institute, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033, USA
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Nuclear coded mitochondrial protein prohibitin is an iron regulated iron binding protein. Mitochondrion 2011; 11:40-7. [DOI: 10.1016/j.mito.2010.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2010] [Revised: 06/12/2010] [Accepted: 07/08/2010] [Indexed: 12/17/2022]
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Barbeito AG, Levade T, Delisle MB, Ghetti B, Vidal R. Abnormal iron metabolism in fibroblasts from a patient with the neurodegenerative disease hereditary ferritinopathy. Mol Neurodegener 2010; 5:50. [PMID: 21067605 PMCID: PMC2993710 DOI: 10.1186/1750-1326-5-50] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 11/10/2010] [Indexed: 01/26/2023] Open
Abstract
Background Nucleotide duplications in exon 4 of the ferritin light polypeptide (FTL) gene cause the autosomal dominant neurodegenerative disease neuroferritinopathy or hereditary ferritinopathy (HF). Pathologic examination of patients with HF has shown abnormal ferritin and iron accumulation in neurons and glia in the central nervous system (CNS) as well as in cells of other organ systems, including skin fibroblasts. To gain some understanding on the molecular basis of HF, we characterized iron metabolism in primary cultures of human skin fibroblasts from an individual with the FTL c.497_498dupTC mutation. Results Compared to normal controls, HF fibroblasts showed abnormal iron metabolism consisting of increased levels of ferritin polypeptides, divalent metal transporter 1, basal iron content and reactive oxygen species, and decreased levels of transferrin receptor-1 and IRE-IRP binding activity. Conclusions Our data indicates that HF fibroblasts replicate the abnormal iron metabolism observed in the CNS of patients with HF. We propose that HF fibroblasts are a unique cellular model in which to study the role of abnormal iron metabolism in the pathogenesis of HF without artifacts derived from over-expression or lack of endogenous translational regulatory elements.
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Affiliation(s)
- Ana G Barbeito
- Department of Pathology and Laboratory Medicine and Indiana Alzheimer disease Center, Indiana University School of Medicine, 635 Barnhill Dr, MSB A136, Indianapolis, IN, 46202, USA.
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Zhao G. Phytoferritin and its implications for human health and nutrition. Biochim Biophys Acta Gen Subj 2010; 1800:815-23. [DOI: 10.1016/j.bbagen.2010.01.009] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2009] [Revised: 01/15/2010] [Accepted: 01/18/2010] [Indexed: 01/02/2023]
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The iron redox and hydrolysis chemistry of the ferritins. Biochim Biophys Acta Gen Subj 2010; 1800:719-31. [DOI: 10.1016/j.bbagen.2010.03.021] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 03/23/2010] [Accepted: 03/26/2010] [Indexed: 12/12/2022]
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Alkhateeb AA, Connor JR. Nuclear ferritin: A new role for ferritin in cell biology. Biochim Biophys Acta Gen Subj 2010; 1800:793-7. [DOI: 10.1016/j.bbagen.2010.03.017] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 03/19/2010] [Accepted: 03/22/2010] [Indexed: 02/08/2023]
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Could a dysfunction of ferritin be a determinant factor in the aetiology of some neurodegenerative diseases? Biochim Biophys Acta Gen Subj 2010; 1800:770-82. [DOI: 10.1016/j.bbagen.2010.04.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Revised: 04/23/2010] [Accepted: 04/25/2010] [Indexed: 12/27/2022]
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Kong P, Wang L, Zhang H, Zhou Z, Qiu L, Gai Y, Song L. Two novel secreted ferritins involved in immune defense of Chinese mitten crab Eriocheir sinensis. FISH & SHELLFISH IMMUNOLOGY 2010; 28:604-612. [PMID: 20045469 DOI: 10.1016/j.fsi.2009.12.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 12/17/2009] [Accepted: 12/18/2009] [Indexed: 05/28/2023]
Abstract
As a principal extracellular iron storage molecule, secreted ferritin plays an important role in the iron-withholding strategy of innate immunity. In this study, two novel secreted ferritins were identified from Chinese mitten crab Eriocheir sinensis (designated as EsFer-1 and EsFer-2) by rapid amplification of cDNA ends (RACE) approaches and expressed sequence tag (EST) analysis. The full-length cDNAs of EsFer-1 and EsFer-2 were of 1278 and 1595 bp, respectively, both containing a putative iron response element (IRE) in their 5' UTRs and multiple A + U-destabilizing elements (TATT or ATTTA) in their 3' UTRs. The ORFs of these two crab ferritin cDNAs were of 639 and 663 bp, respectively, encoding two peptides of 212 and 220 amino acid residues each with a signal peptide and typical structures of ferritins such as four long alpha-helices, one short alpha-helix and an L-loop. EsFer-2 exhibited higher similarity with the H-ferritins from both invertebrates and vertebrates, while EsFer-1 was closer matched to L-ferritins. The eight amino acid residues identified as metal binding sites in vertebrate H-ferritins were conserved in EsFer-2 (Glu53, Tyr60, Glu87, Glu88, His91, Glu146, Glu177 and Gln178), but none of them was observed in EsFer-1. By fluorescent quantitative real-time PCR, mRNA transcripts of EsFer-1 and EsFer-2 were mainly detected in muscle, hepatopancreas and gill, and also marginally detectable in gonad, heart and hemocytes. After the crabs were challenged by bacteria Listonella anguillarum, the transcriptional levels of both EsFer-1 and EsFer-2 in hemocytes were up-regulated twice. In the first up-regulation, the mRNA relative expression levels of both EsFer-1 and EsFer-2 reached peak at 3 h post-challenge, while in the second up-regulation, they did not reach the highest point within the experiment duration. After the fungi Pichia pastoris GS115 challenge, there was only one transcriptional level peak of both the two ferritins, appearing at 6 h post-challenge. These results suggest that secreted EsFer-1 and EsFer-2 are crucial proteins in the iron-withholding defense system, and play important roles in the innate immune responses in crabs.
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Affiliation(s)
- Pengfei Kong
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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Abstract
Hemochromatosis is a known cause of osteoporosis, and iron overload has deleterious effects on bone. Although iron overload and its association with osteoporosis has long been recognized, the pathogenesis and exact role of iron have been undefined. Bone is an active tissue with constant remodeling capacity. Osteoblast (OB) development and maturation are under the influence of core binding factor alpha-1 (CBF-alpha1), which induces expression of OB-specific genes, including alkaline phosphatase, an important enzyme in early osteogenesis, and osteocalcin, a noncollagenous protein deposited within the osteoid. This study investigates the mechanism by which iron inhibits human OB activity, which in vivo may lead to decreased mineralization, osteopenia, and osteoporosis. We demonstrate that iron-provoked inhibition of OB activity is mediated by ferritin and its ferroxidase activity. We confirm this notion by using purified ferritin H-chain and ceruloplasmin, both known to possess ferroxidase activity that inhibited calcification, whereas a site-directed mutant of ferritin H-chain lacking ferroxidase activity failed to provide any inhibition. Furthermore, we are reporting that such suppression is not restricted to inhibition of calcification, but OB-specific genes such as alkaline phosphatase, osteocalcin, and CBF-alpha1 are all downregulated by ferritin in a dose-responsive manner. This study corroborates that iron decreases mineralization and demonstrates that this suppression is provided by iron-induced upregulation of ferritin. In addition, we conclude that inhibition of OB activity, mineralization, and specific gene expression is attributed to the ferroxidase activity of ferritin.
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Roperto S, Borzacchiello G, Brun R, Costanzo F, Faniello M, Raso C, Rosati A, Russo V, Leonardi L, Saracino D, Turco M, Urraro C, Roperto F. Ferritin Heavy Chain (FHC) is Up-regulated in Papillomavirus-Associated Urothelial Tumours of the Urinary Bladder in Cattle. J Comp Pathol 2010; 142:9-18. [DOI: 10.1016/j.jcpa.2009.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 05/12/2009] [Accepted: 05/29/2009] [Indexed: 10/20/2022]
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Ferritin binds and activates p53 under oxidative stress. Biochem Biophys Res Commun 2009; 389:399-404. [DOI: 10.1016/j.bbrc.2009.08.125] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Accepted: 08/21/2009] [Indexed: 12/12/2022]
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Yang G, Wang L, Zhu M, Xu D. Identification of non-Alzheimer's disease tauopathies-related proteins by proteomic analysis. Neurol Res 2008; 30:613-22. [PMID: 18647502 DOI: 10.1179/174313208x284124] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES To identify differentially expressed proteins between tauopathies cases and controls and to explore molecular mechanisms of tauopathies. METHOD Two-dimensional gel electrophoresis (2DE) was applied to separate the total proteins of temporal lobe obtained at autopsy from four tauopathies cases and four aged subjects without clinical or pathologic involvement of nervous system. The silver or Coomassie brilliant blue stained gels were analysed by 2-DE software Image Master 2D Elite. Selected differential protein spots were identified with MALDI-TOF/TOF tandem mass spectrometry. RESULTS Glyceraldehyde 3-phosphate dehydrogenase, uracil DNA glycosylase, human superoxide dismutase, isocitrate dehydrogenase subunit, synaptotagmin I, thioredoxin peroxidase 1, glial fibrillary acidic protein, P25 alpha, enoyl coenzyme A hydratase short chain 1, pyridoxine-5'-phosphate oxidase, Mn-superoxide dismutase and alpha enolase were significantly upregulated in tauopathies brains, whereas antioxidant protein 2, ferritin heavy chain, glutamate dehydrogenase precursor, peptidyl-prolyl cis-trans isomerase A, serum albumin precursor and dihydropyrimidinase-related protein 2 were lowly expressed in tauopathies brains. CONCLUSIONS We identified a number of tauopathy-related proteins that might be useful for discovering the molecular mechanisms of tauopathies, which could also be helpful for diagnosing and treating these disorders.
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Affiliation(s)
- Guofeng Yang
- Department of Geriatric Neurology, Chinese PLA General Hospital, Beijing 100853, China
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