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Soltani S, Webb SM, Kroll T, King-Jones K. Drosophila Evi5 is a critical regulator of intracellular iron transport via transferrin and ferritin interactions. Nat Commun 2024; 15:4045. [PMID: 38744835 PMCID: PMC11094094 DOI: 10.1038/s41467-024-48165-9] [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] [Received: 03/15/2023] [Accepted: 04/22/2024] [Indexed: 05/16/2024] Open
Abstract
Vesicular transport is essential for delivering cargo to intracellular destinations. Evi5 is a Rab11-GTPase-activating protein involved in endosome recycling. In humans, Evi5 is a high-risk locus for multiple sclerosis, a debilitating disease that also presents with excess iron in the CNS. In insects, the prothoracic gland (PG) requires entry of extracellular iron to synthesize steroidogenic enzyme cofactors. The mechanism of peripheral iron uptake in insect cells remains controversial. We show that Evi5-depletion in the Drosophila PG affected vesicle morphology and density, blocked endosome recycling and impaired trafficking of transferrin-1, thus disrupting heme synthesis due to reduced cellular iron concentrations. We show that ferritin delivers iron to the PG as well, and interacts physically with Evi5. Further, ferritin-injection rescued developmental delays associated with Evi5-depletion. To summarize, our findings show that Evi5 is critical for intracellular iron trafficking via transferrin-1 and ferritin, and implicate altered iron homeostasis in the etiology of multiple sclerosis.
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Affiliation(s)
- Sattar Soltani
- University of Alberta, Faculty of Science, Edmonton, Alberta, T6G 2E9, Canada
| | - Samuel M Webb
- Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Thomas Kroll
- Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Kirst King-Jones
- University of Alberta, Faculty of Science, Edmonton, Alberta, T6G 2E9, Canada.
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2
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Hegde CV, Mahur H, Singh DP, Darshan RS. Can ferritin be a surrogate marker for CD4 cells in human immunodeficiency virus patients? A cross-sectional study of association of serum ferritin levels with immunological staging of human immunodeficiency virus patients. Indian J Sex Transm Dis AIDS 2024; 45:31-33. [PMID: 38989078 PMCID: PMC11233032 DOI: 10.4103/ijstd.ijstd_32_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 07/12/2024] Open
Abstract
Introduction The human immunodeficiency virus (HIV)/AIDS in India came into public view in 1986 with the detection of the first case of HIV in Chennai, Tamil Nadu, and the first AIDS case in Mumbai, Maharashtra in 1987. In acute phase response, iron distribution occurs in the liver and mononuclear phagocytic system. A high prevalence of elevated serum ferritin levels is reported in HIV infection and serum ferritin levels increase with the clinical worsening of infection and with decreasing CD4 lymphocyte counts. This study is designed to find the role of acute phase reactant serum ferritin in the progression of the disease of HIV which is complicated by opportunistic infections, by finding the correlation of serum ferritin with immunological stages of HIV. Materials and Methods This cross-sectional study was conducted on 75 patients admitted to various wards of the Department of Medicine or attending medicine outdoor or ART Centre, Maharana Bhupal Government Hospital, RNT Medical College Udaipur. Serum ferritin, total iron binding capacity, and total serum iron were analyzed in Cobas® analyzer. CD4 cells are measured using the flow cytometry technique. The results were tabulated and subjected to statistical analysis. Results and Conclusion There was a negative correlation among serum ferritin and CD4 cells with r = -0.195 which was statistically significant (P < 0.05). As the CD4 cell count decreased incidence of serum ferritin increased. Elevation of serum ferritin levels is associated with a low count of the CD4+ in HIV-diagnosed patients. In a patient diagnosed with HIV, elevated serum ferritin indicates underlying inflammatory pathology. Serum ferritin can be used as a guide to further evaluation of underlying disease in HIV patients.
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Affiliation(s)
| | - Hemant Mahur
- Department of Internal Medicine, RNT Medical College, Udaipur, Rajasthan, India
| | - D P Singh
- Department of Internal Medicine, RNT Medical College, Udaipur, Rajasthan, India
| | - R S Darshan
- Department of Internal Medicine, RNT Medical College, Udaipur, Rajasthan, India
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Stefanache A, Lungu II, Butnariu IA, Calin G, Gutu C, Marcu C, Grierosu C, Bogdan Goroftei ER, Duceac LD, Dabija MG, Popa F, Damir D. Understanding How Minerals Contribute to Optimal Immune Function. J Immunol Res 2023; 2023:3355733. [PMID: 37946846 PMCID: PMC10632063 DOI: 10.1155/2023/3355733] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/16/2023] [Accepted: 09/09/2023] [Indexed: 11/12/2023] Open
Abstract
Sufficient mineral supply is vital not only for the innate immune system but also for the components of the adaptive immune defense, which encompass defense mechanisms against pathogens and the delicate balance of pro- and anti-inflammatory regulation in the long term. Generally, a well-balanced diet is capable of providing the necessary minerals to support the immune system. Nevertheless, specific vulnerable populations should be cautious about obtaining adequate amounts of minerals such as magnesium, zinc, copper, iron, and selenium. Inadequate levels of these minerals can temporarily impair immune competence and disrupt the long-term regulation of systemic inflammation. Therefore, comprehending the mechanisms and sources of these minerals is crucial. In exceptional circumstances, mineral deficiencies may necessitate supplementation; however, excessive intake of supplements can have adverse effects on the immune system and should be avoided. Consequently, any supplementation should be approved by medical professionals and administered in recommended doses. This review emphasizes the crucial significance of minerals in promoting optimal functioning of the immune system. It investigates the indispensable minerals required for immune system function and the regulation of inflammation. Moreover, it delves into the significance of maintaining an optimized intake of minerals from a nutritional standpoint.
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Affiliation(s)
- Alina Stefanache
- “Grigore T. Popa” University of Medicine and Pharmacy, Iasi 700115, Romania
| | - Ionut-Iulian Lungu
- “Grigore T. Popa” University of Medicine and Pharmacy, Iasi 700115, Romania
| | | | - Gabriela Calin
- Faculty of Dental Medicine, “Apollonia” University of Iasi, 11 Pacurari Street, Iasi 700511, Romania
| | - Cristian Gutu
- Faculty of Medicine and Pharmacy, University Dunarea de Jos, 47 Domneasca Street, Galati 800008, Romania
| | - Constantin Marcu
- Faculty of Medicine and Pharmacy, University Dunarea de Jos, 47 Domneasca Street, Galati 800008, Romania
| | - Carmen Grierosu
- Faculty of Dental Medicine, “Apollonia” University of Iasi, 11 Pacurari Street, Iasi 700511, Romania
| | | | - Letitia-Doina Duceac
- Faculty of Medicine and Pharmacy, University Dunarea de Jos, 47 Domneasca Street, Galati 800008, Romania
| | | | - Florina Popa
- Faculty of Medicine and Pharmacy, University Dunarea de Jos, 47 Domneasca Street, Galati 800008, Romania
| | - Daniela Damir
- “Grigore T. Popa” University of Medicine and Pharmacy, Iasi 700115, Romania
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4
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Pandya Shesh B, Slagle-Webb B, Shenoy G, Khristov V, Zacharia BE, Connor JR. Uptake of H-ferritin by Glioblastoma stem cells and its impact on their invasion capacity. J Cancer Res Clin Oncol 2023; 149:9691-9703. [PMID: 37237166 DOI: 10.1007/s00432-023-04864-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023]
Abstract
PURPOSE Iron acquisition is key to maintaining cell survival and function. Cancer cells in general are considered to have an insatiable iron need. Iron delivery via the transferrin/transferrin receptor pathway has been the canonical iron uptake mechanism. Recently, however, our laboratory and others have explored the ability of ferritin, particularly the H-subunit, to deliver iron to a variety of cell types. Here, we investigate whether Glioblastoma (GBM) initiating cells (GICs), a small population of stem-like cells, are known for their iron addiction and invasive nature acquire exogenous ferritin, as a source of iron. We further assess the functional impact of ferritin uptake on the invasion capacity of the GICs. METHODS To establish that H-ferritin can bind to human GBM, tissue-binding assays were performed on samples collected at the time of surgery. To interrogate the functional consequences of H-ferritin uptake, we utilized two patient-derived GIC lines. We further describe H-ferritin's impact on GIC invasion capacity using a 3D invasion assay. RESULTS H-ferritin bound to human GBM tissue at the amount of binding was influenced by sex. GIC lines showed uptake of H-ferritin protein via transferrin receptor. FTH1 uptake correlated with a significant decrease in the invasion capacity of the cells. H-ferritin uptake was associated with a significant decrease in the invasion-related protein Rap1A. CONCLUSION These findings indicate that extracellular H-ferritin participates in iron acquisition to GBMs and patient-derived GICs. The functional significance of the increased iron delivery by H-ferritin is a decreased invasion capacity of GICs potentially via reduction of Rap1A protein levels.
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Affiliation(s)
| | - Becky Slagle-Webb
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA
| | - Ganesh Shenoy
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA
| | - Vladimir Khristov
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA
| | - Brad E Zacharia
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA
| | - James R Connor
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA.
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He R, Fisher TW, Saha S, Peiz-Stelinski K, Willis MA, Gang DR, Brown JK. Differential gene expression of Asian citrus psyllids infected with ' Ca. Liberibacter asiaticus' reveals hyper-susceptibility to invasion by instar fourth-fifth and teneral adult stages. FRONTIERS IN PLANT SCIENCE 2023; 14:1229620. [PMID: 37662178 PMCID: PMC10470031 DOI: 10.3389/fpls.2023.1229620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/10/2023] [Indexed: 09/05/2023]
Abstract
The bacterial pathogen Candidatus Liberibacter asiaticus (CLas) is the causal agent of citrus greening disease. This unusual plant pathogenic bacterium also infects its psyllid host, the Asian citrus psyllid (ACP). To investigate gene expression profiles with a focus on genes involved in infection and circulation within the psyllid host of CLas, RNA-seq libraries were constructed from CLas-infected and CLas-free ACP representing the five different developmental stages, namely, nymphal instars 1-2, 3, and 4-5, and teneral and mature adults. The Gbp paired-end reads (296) representing the transcriptional landscape of ACP across all life stages and the official gene set (OGSv3) were annotated based on the chromosomal-length v3 reference genome and used for de novo transcript discovery resulting in 25,410 genes with 124,177 isoforms. Differential expression analysis across all ACP developmental stages revealed instar-specific responses to CLas infection, with greater overall responses by nymphal instars, compared to mature adults. More genes were over-or under-expressed in the 4-5th nymphal instars and young (teneral) adults than in instars 1-3, or mature adults, indicating that late immature instars and young maturing adults were highly responsive to CLas infection. Genes identified with potential for direct or indirect involvement in the ACP-CLas circulative, propagative transmission pathway were predominantly responsive during early invasion and infection processes and included canonical cytoskeletal remodeling and endo-exocytosis pathway genes. Genes with predicted functions in defense, development, and immunity exhibited the greatest responsiveness to CLas infection. These results shed new light on ACP-CLas interactions essential for pathogenesis of the psyllid host, some that share striking similarities with effector protein-animal host mechanisms reported for other culturable and/or fastidious bacterial- or viral- host pathosystems.
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Affiliation(s)
- Ruifeng He
- Institute of Biological Chemistry, Washington State University, Pullman, WA, United States
- Soybean Genomics and Improvement Laboratory, US Department of Agriculture (USDA)-Agricultural Research Service (ARS), Beltsville, MD, United States
| | - Tonja W. Fisher
- School of Plant Sciences, University of Arizona, Tucson, AZ, United States
| | - Surya Saha
- Sol Genomics Network, Boyce Thompson Institute, Ithaca, NY, United States
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, United States
| | - Kirsten Peiz-Stelinski
- Citrus Research and Education Center, Department of Entomology and Nematology, University of Florida, Lake Alfred, FL, United States
| | - Mark A. Willis
- Institute of Biological Chemistry, Washington State University, Pullman, WA, United States
| | - David R. Gang
- Institute of Biological Chemistry, Washington State University, Pullman, WA, United States
| | - Judith K. Brown
- School of Plant Sciences, University of Arizona, Tucson, AZ, United States
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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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7
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Wu X, Jiao Z, Zhang J, Li F, Li Y. Expression of TFRC helps to improve the antineoplastic effect of Ara-C on AML cells through a targeted delivery carrier. J Nanobiotechnology 2023; 21:126. [PMID: 37041636 PMCID: PMC10088114 DOI: 10.1186/s12951-023-01881-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/06/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND Currently, high doses of cytarabine arabinoside (Ara-C)-based combined chemotherapy are commonly used in acute myeloid leukemia (AML) therapy, but severe adverse effects and poor suppression effects in leukemia cells limit the clinical therapeutic efficiency of Ara-C-based chemotherapy due to a lack of targeting selectivity. To improve the therapeutic effect of Ara-C in AML, here, since we confirmed that transferrin receptor 1 (TFRC) expression in AML cells was constant, we generated Ara-C@HFn by encapsulating free Ara-C into self-assembled heavy ferritin chain (HFn, the ligand of TFRC) nanocages. RESULTS The analysis of clinically relevant data suggested that the high expression levels of TFRC from AML cells would not decrease significantly after treatment with Ara-C. Ara-C@HFn can be efficiently internalized by leukemia cells, showing stronger cytotoxic effects in vitro and reducing the burden of leukemia in AML mice more effectively in vivo than free Ara-C. Ara-C@HFn treatment showed no acute toxicity in visceral organs of mice. Moreover, the analysis of clinically relevant data also suggested that there are several drugs (such as tamibarotene and ABT199) that would not cause significant expression down-regulation of TFRC in AML cells (after treatment). CONCLUSION The above results suggested that TFRC can be used as a constant and effective target for drug targeting delivery of AML cells. Thus Ara-C@HFn treatment can become a safe and efficient strategy for AML therapy by specifically delivering Ara-C to AML cells. Besides, the HFn nanocages are promising for improving antineoplastic effect of other AML-related therapy drugs that do not cause downregulated expression of TFRC in AML cells.
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Affiliation(s)
- Xinzhou Wu
- Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Zhouguang Jiao
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China.
| | - Junying Zhang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Feng Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Yuhua Li
- Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
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8
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Sidorova TV, Kutyrev IA, Khabudaev KV, Sukhanova LV, Zheng Y, Dugarov ZN, Mazur OE. Comparative transcriptomic analysis of the larval and adult stages of Dibothriocephalus dendriticus (Cestoda: Diphyllobothriidea). Parasitol Res 2023; 122:145-156. [PMID: 36370234 DOI: 10.1007/s00436-022-07708-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 10/27/2022] [Indexed: 11/13/2022]
Abstract
Tapeworms of the genus Dibothriocephalus are widely distributed throughout the world, some of which are agents of human diphyllobothriasis, one of the most important fish-borne zoonoses caused by a cestode parasite. Genomic and transcriptomic data can be used to develop future diagnostic tools and epidemiological studies. The present work focuses on a comparative analysis of the transcriptomes of adult and plerocercoid D. dendriticus and the identification of their differentially expressed genes (DEGs). Transcriptome assembly and analysis yielded and annotated 35,129 unigenes, noting that 16,568 (47%) unigenes were not annotated in known databases, which may indicate a unique set of expressed transcripts for D. dendriticus. A total of 8022 differentially expressed transcripts were identified, including 3225 upregulated and 4797 downregulated differentially expressed transcripts from the plerocercoid and adult animals. The analysis of DEGs has shown that among the most differentially expressed genes, there are important genes characteristic of each stage. Thus, several genes are characteristic of D. dendriticus plerocercoids, including fatty acid-binding protein and ferritin. Among the most highly expressed DEGs of the adult stage of D. dendriticus is the Kunitz-type serine protease inhibitor, in two putative isoforms. The analyses of GO and KEGG metabolic pathways revealed that a large number of the DEGs of D. dendriticus are associated with the biosynthesis of various substances such as arginine and folate, as well as with various metabolic pathways such as galactose metabolism, selenocompound metabolism, and phosphonate and phosphinate metabolism. This will contribute to further research aimed at identifying targets for new generation drugs and the development of specific vaccines.
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Affiliation(s)
- Tuyana Valeryevna Sidorova
- Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, 670047, Ulan-Ude, Russia.,Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
| | - Ivan Alexandrovich Kutyrev
- Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, 670047, Ulan-Ude, Russia.
| | | | | | - Yadong Zheng
- Zhejiang A&F University, Zhejiang Province, Hangzhou, China
| | - Zhargal Nimaevich Dugarov
- Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, 670047, Ulan-Ude, Russia
| | - Olga Evgenievna Mazur
- Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, 670047, Ulan-Ude, Russia
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Zhang J, Song Y, Li Y, Lin HB, Fang X. Iron homeostasis in the heart: Molecular mechanisms and pharmacological implications. J Mol Cell Cardiol 2023; 174:15-24. [PMID: 36375319 DOI: 10.1016/j.yjmcc.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 11/01/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
Iron is necessary for the life of practically all living things, yet it may also harm people toxically. Accordingly, humans and other mammals have evolved an effective and tightly regulatory system to maintain iron homeostasis in healthy tissues, including the heart. Iron deficiency is common in patients with heart failure, and is associated with worse prognosis in this population; while the prevalence of iron overload-related cardiovascular disorders is also increasing. Therefore, enhancing the therapy of patients with cardiovascular disorders requires a thorough understanding of iron homeostasis. Here, we give readers an overview of the fundamental mechanisms governing systemic iron homeostasis as well as the most recent knowledge about the intake, storage, use, and export of iron from the heart. Genetic mouse models used for investigation of iron metabolism in various in vivo scenarios are summarized and highlighted. We also go through different clinical conditions and therapeutic approaches that target cardiac iron dyshomeostasis. Finally, we conclude the review by outlining the present knowledge gaps and important open questions in this field in order to guide future research on cardiac iron metabolism.
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Affiliation(s)
- Jiawei Zhang
- Department of Nutrition and Toxicology, School of Public Health, Hangzhou Normal University, Hangzhou, China
| | - Yijing Song
- Department of Nutrition and Toxicology, School of Public Health, Hangzhou Normal University, Hangzhou, China
| | - You Li
- Department of Nutrition and Toxicology, School of Public Health, Hangzhou Normal University, Hangzhou, China
| | - Han-Bin Lin
- Zhongshan Institute for Drug Discovery, SIMM, CAS, Zhongshan, China; Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Xuexian Fang
- Department of Nutrition and Toxicology, School of Public Health, Hangzhou Normal University, Hangzhou, China; Key Laboratory of Elemene Class Anti-cancer Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, China.
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10
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Abulseoud OA, Yehia A, Egol CJ, Nettey VN, Aly M, Qu Y, Skolnik AB, Grill MF, Sen A, Schneekloth TD. Attenuated initial serum ferritin concentration in critically ill coronavirus disease 2019 geriatric patients with comorbid psychiatric conditions. Front Psychiatry 2022; 13:1035986. [PMID: 36440432 PMCID: PMC9681793 DOI: 10.3389/fpsyt.2022.1035986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 10/20/2022] [Indexed: 11/10/2022] Open
Abstract
We examined the effects of psychiatric comorbidity, sex, and ICU admission on serum ferritin concentration in 628 elderly patients (79.7 ± 8.5 years) with positive SARS-CoV-2 PCR test. Hospitalization was required in 96% of patients and 17% required ICU admission. Patients with COVID-19 and psychiatric comorbidities (n = 212) compared to patients without psychiatric comorbidities (n = 416) had significantly lower ferritin concentration (570.4 ± 900.1 vs. 744.1 ± 965, P = 0.029), a greater incidence of delirium (22.6 vs. 14.4%, P = 0.013) and higher mortality (35.3 vs. 27.6%, P = 0.015). Furthermore, we found significant effects for sex (P = 0.002) and ICU admission (P = 0.007). Among patients without comorbid psychiatric conditions, males had significantly higher ferritin compared to females (1,098.3 ± 78.4 vs. 651.5 ± 94.4, P < 0.001). ICU patients without comorbid psychiatric conditions had significantly higher serum ferritin compared to ICU patients with comorbid psychiatric conditions: (1,126.6 ± 110.7 vs. 668.6 ± 156.5, P < 0.001). Our results suggest that the presence of comorbid psychiatric conditions in elderly patients with COVID-19 is associated with higher rates of delirium and mortality and lower ferritin levels during severe illness. Whether high serum ferritin is protective during severe infection requires further investigation.
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Affiliation(s)
- Osama A Abulseoud
- Department of Psychiatry and Psychology, Mayo Clinic Arizona, Phoenix, AZ, United States.,Department of Neuroscience, Mayo Clinic Graduate School of Biomedical Sciences, Collaborative Research Building (CRB), Scottsdale, AZ, United States
| | - Asmaa Yehia
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Claudine J Egol
- Department of Psychiatry and Psychology, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Victor N Nettey
- Department of Psychiatry and Psychology, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Mohamed Aly
- Department of Cardiothoracic Surgery, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Yihuai Qu
- Alix School of Medicine at Mayo Clinic, Phoenix, AZ, United States
| | - Aaron B Skolnik
- Department of Critical Care, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Marie F Grill
- Department of Neurology, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Ayan Sen
- Department of Critical Care, Mayo Clinic Arizona, Phoenix, AZ, United States
| | - Terry D Schneekloth
- Department of Psychiatry and Psychology, Mayo Clinic Arizona, Phoenix, AZ, United States
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11
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Melo AKG, Milby KM, Caparroz ALMA, Pinto ACPN, Santos RRP, Rocha AP, Ferreira GA, Souza VA, Valadares LDA, Vieira RMRA, Pileggi GS, Trevisani VFM. Biomarkers of cytokine storm as red flags for severe and fatal COVID-19 cases: A living systematic review and meta-analysis. PLoS One 2021; 16:e0253894. [PMID: 34185801 PMCID: PMC8241122 DOI: 10.1371/journal.pone.0253894] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 06/16/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To describe the laboratory parameters and biomarkers of the cytokine storm syndrome associated with severe and fatal COVID-19 cases. METHODS A search with standardized descriptors and synonyms was performed on November 28th, 2020 of the MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, LILACS, and IBECS to identify studies of interest. Grey literature searches and snowballing techniques were additionally utilized to identify yet-unpublished works and related citations. Two review authors independently screened the retrieved titles and abstracts, selected eligible studies for inclusion, extracted data from the included studies, and then assessed the risk of bias using the Newcastle-Ottawa Scale. Eligible studies were those including laboratory parameters-including serum interleukin-6 levels-from mild, moderate, or severe COVID-19 cases. Laboratory parameters, such as interleukin-6, ferritin, hematology, C-Reactive Protein, procalcitonin, lactate dehydrogenase, aspartate aminotransferase, creatinine, and D-dimer, were extracted from the studies. Meta-analyses were conducted using the laboratory data to estimate mean differences with associated 95% confidence intervals. DATA SYNTHESIS The database search yielded 9,620 records; 40 studies (containing a total of 9,542 patients) were included in the final analysis. Twenty-one studies (n = 4,313) assessed laboratory data related to severe COVID-19 cases, eighteen studies (n = 4,681) assessed predictors for fatal COVID-19 cases and one study (n = 548) assessed laboratory biomarkers related to severe and fatal COVID-19 cases. Lymphopenia, thrombocytopenia, and elevated levels of interleukin-6, ferritin, D-dimer, aspartate aminotransferase, C-Reactive-Protein, procalcitonin, creatinine, neutrophils and leucocytes were associated with severe and fatal COVID-19 cases. CONCLUSIONS This review points to interleukin-6, ferritin, leukocytes, neutrophils, lymphocytes, platelets, C-Reactive Protein, procalcitonin, lactate dehydrogenase, aspartate aminotransferase, creatinine, and D-dimer as important biomarkers of cytokine storm syndrome. Elevated levels of interleukin-6 and hyperferritinemia should be considered as red flags of systemic inflammation and poor prognosis in COVID-19.
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Affiliation(s)
- Ana Karla G. Melo
- Division of Rheumatology, Department of Clinical Medicine, Hospital Universitário Lauro Wanderley, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Keilla M. Milby
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Ana Luiza M. A. Caparroz
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Department of Pediatric Rheumatology, Hospital de Base, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, SP, Brazil
| | - Ana Carolina P. N. Pinto
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Department of Biological and Health Sciences, Universidade Federal do Amapá, Macapá, AP, Brazil
- Fulbright Alumna at University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Rodolfo R. P. Santos
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Department of Data Science, Synova Health, Campinas, SP, Brazil
| | - Aline P. Rocha
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Gilda A. Ferreira
- Department of Lokomotor System, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Viviane A. Souza
- Department of Clinical Medicine, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | | | - Rejane M. R. A. Vieira
- Department of Clinical Medicine, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
- Department of Clinical Medicine, Universidade de Fortaleza, Fortaleza, CE, Brazil
| | - Gecilmara S. Pileggi
- Department of Rheumatology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Virgínia F. M. Trevisani
- Evidence-Based Health Program, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Department of Rheumatology, Universidade de Santo Amaro, São Paulo, SP, Brazil
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12
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Zhang N, Yu X, Xie J, Xu H. New Insights into the Role of Ferritin in Iron Homeostasis and Neurodegenerative Diseases. Mol Neurobiol 2021; 58:2812-2823. [PMID: 33507490 DOI: 10.1007/s12035-020-02277-7] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 12/28/2020] [Indexed: 12/11/2022]
Abstract
Growing evidence has indicated that iron deposition is one of the key factors leading to neuronal death in the neurodegenerative diseases. Ferritin is a hollow iron storage protein composed of 24 subunits of two types, ferritin heavy chain (FTH) and ferritin light chain (FTL), which plays an important role in maintaining iron homeostasis. Recently, the discovery of extracellular ferritin and ferritin in exosomes indicates that ferritin might be not only an iron storage protein within the cell, but might also be an important factor in the regulation of tissue and body iron homeostasis. In this review, we first described the structural characteristics, regulation and the physiological functions of ferritin. Secondly, we reviewed the current evidence concerning the mechanisms underlying the secretion of ferritin and the possible role of secreted ferritin in the brain. Then, we summarized the relationship between ferritin and the neurodegenerative diseases including Parkinson's disease (PD), Alzheimer's disease (AD) and neuroferritinopathy (NF). Given the importance and relationship between iron and neurodegenerative diseases, understanding the role of ferritin in the brain can be expected to contribute to our knowledge of iron dysfunction and neurodegenerative diseases.
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Affiliation(s)
- Na Zhang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, School of Basic Medicine, Qingdao University, Qingdao, 266071, China.,Institute of Brain Science and Disease, Qingdao University, Qingdao, 266071, China
| | - Xiaoqi Yu
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, School of Basic Medicine, Qingdao University, Qingdao, 266071, China.,Institute of Brain Science and Disease, Qingdao University, Qingdao, 266071, China
| | - Junxia Xie
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, School of Basic Medicine, Qingdao University, Qingdao, 266071, China. .,Institute of Brain Science and Disease, Qingdao University, Qingdao, 266071, China.
| | - Huamin Xu
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, School of Basic Medicine, Qingdao University, Qingdao, 266071, China. .,Institute of Brain Science and Disease, Qingdao University, Qingdao, 266071, China.
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13
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Zhang WZ, Oromendia C, Kikkers SA, Butler JJ, O'Beirne S, Kim K, O'Neal WK, Freeman CM, Christenson SA, Peters SP, Wells JM, Doerschuk C, Putcha N, Barjaktarevic I, Woodruff PG, Cooper CB, Bowler RP, Comellas AP, Criner GJ, Paine R, Hansel NN, Han MK, Crystal RG, Kaner RJ, Ballman KV, Curtis JL, Martinez FJ, Cloonan SM. Increased airway iron parameters and risk for exacerbation in COPD: an analysis from SPIROMICS. Sci Rep 2020; 10:10562. [PMID: 32601308 PMCID: PMC7324559 DOI: 10.1038/s41598-020-67047-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 06/02/2020] [Indexed: 12/12/2022] Open
Abstract
Levels of iron and iron-related proteins including ferritin are higher in the lung tissue and lavage fluid of individuals with chronic obstructive pulmonary disease (COPD), when compared to healthy controls. Whether more iron in the extracellular milieu of the lung associates with distinct clinical phenotypes of COPD, including increased exacerbation susceptibility, is unknown. We measured iron and ferritin levels in the bronchoalveolar lavage fluid (BALF) of participants enrolled in the SubPopulations and InteRmediate Outcome Measures In COPD (SPIROMICS) bronchoscopy sub-study (n = 195). BALF Iron parameters were compared to systemic markers of iron availability and tested for association with FEV1 % predicted and exacerbation frequency. Exacerbations were modelled using a zero-inflated negative binomial model using age, sex, smoking, and FEV1 % predicted as clinical covariates. BALF iron and ferritin were higher in participants with COPD and in smokers without COPD when compared to non-smoker control participants but did not correlate with systemic iron markers. BALF ferritin and iron were elevated in participants who had COPD exacerbations, with a 2-fold increase in BALF ferritin and iron conveying a 24% and 2-fold increase in exacerbation risk, respectively. Similar associations were not observed with plasma ferritin. Increased airway iron levels may be representative of a distinct pathobiological phenomenon that results in more frequent COPD exacerbation events, contributing to disease progression in these individuals.
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Affiliation(s)
- William Z Zhang
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
- New York-Presbyterian Hospital, New York, New York, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Clara Oromendia
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
- Department of Population Health Sciences, Division of Biostatistics, Weill Cornell Medicine, New York, New York, USA
| | - Sarah Ann Kikkers
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
| | - James J Butler
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
| | - Sarah O'Beirne
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
- Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Kihwan Kim
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
| | - Wanda K O'Neal
- University of North Carolina Marsico Lung Institute, Chapel Hill, North Carolina, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Christine M Freeman
- Pulmonary and Critical Care Medicine Division, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, Michigan, USA
- Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Stephanie A Christenson
- University of California at San Francisco, San Francisco, California, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Stephen P Peters
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - J Michael Wells
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama, UK
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Claire Doerschuk
- University of North Carolina Marsico Lung Institute, Chapel Hill, North Carolina, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Nirupama Putcha
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Igor Barjaktarevic
- Division of Pulmonary and Critical Care Medicine, University of California Los Angeles Medical Center, Los Angeles, California, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Prescott G Woodruff
- University of California at San Francisco, San Francisco, California, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Christopher B Cooper
- Division of Pulmonary and Critical Care Medicine, University of California Los Angeles Medical Center, Los Angeles, California, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Russell P Bowler
- University of Colorado School of Medicine, Aurora, Colorado, USA
- National Jewish Health, Denver, Colorado, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Alejandro P Comellas
- Division of Pulmonary and Critical Care, University of Iowa, Iowa City, Iowa, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Gerard J Criner
- Department of Pulmonary & Critical Care Medicine, Temple University, Philadelphia, Pennsylvania, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Robert Paine
- Section of Pulmonary and Critical Care Medicine, Salt Lake City Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Nadia N Hansel
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Meilan K Han
- Pulmonary and Critical Care Medicine Division, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, Michigan, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Ronald G Crystal
- Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Robert J Kaner
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
- Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Karla V Ballman
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
- Department of Population Health Sciences, Division of Biostatistics, Weill Cornell Medicine, New York, New York, USA
| | - Jeffrey L Curtis
- Pulmonary and Critical Care Medicine Division, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, Michigan, USA
- Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Fernando J Martinez
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA
- New York-Presbyterian Hospital, New York, New York, USA
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA
| | - Suzanne M Cloonan
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, USA.
- School of Medicine, Trinity Biomedical Sciences Institute and Tallaght University Hospital, Trinity College Dublin, Trinity, Ireland.
- SPIROMICS investigators, Collaborative Studies Coordinating Center, Department of Biostatistics Gillings School of Global Public Health, University of North Carolina at Chapel Hill 123 W. Franklin Street Suite 450, Chapel Hill, NC 27516, USA.
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14
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Abstract
Ferritins are evolutionarily conserved proteins that regulate cellular iron metabolism. It is the only intracellular protein that is capable of storing large quantities of iron. Although the ratio of different subunits determines the iron content of each ferritin molecule, the exact mechanism that dictates organization of these subunits still is unclear. In this review, we address renal ferritin expression and its implication in kidney disease. Specifically, we address the role of ferritin subunits in preventing kidney injury and also promoting tolerance against infection-associated kidney injury. We describe functions for ferritin that are independent of its ability to ferroxidize and store iron. We further discuss the implications of ferritin in body fluids, including blood and urine, during inflammation and kidney disease. Although there are several in-depth review articles on ferritin in the context of iron metabolism, we chose to focus on the role of ferritin particularly in kidney health and disease and highlight unanswered questions in the field.
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Affiliation(s)
- Kayla McCullough
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Subhashini Bolisetty
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL.
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15
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Winn NC, Volk KM, Hasty AH. Regulation of tissue iron homeostasis: the macrophage "ferrostat". JCI Insight 2020; 5:132964. [PMID: 31996481 DOI: 10.1172/jci.insight.132964] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Iron is an essential element for multiple fundamental biological processes required for life; yet iron overload can be cytotoxic. Consequently, iron concentrations at the cellular and tissue level must be exquisitely governed by mechanisms that complement and fine-tune systemic control. It is well appreciated that macrophages are vital for systemic iron homeostasis, supplying or sequestering iron as needed for erythropoiesis or bacteriostasis, respectively. Indeed, recycling of iron through erythrophagocytosis by splenic macrophages is a major contributor to systemic iron homeostasis. However, accumulating evidence suggests that tissue-resident macrophages regulate local iron availability and modulate the tissue microenvironment, contributing to cellular and tissue function. Here, we summarize the significance of tissue-specific regulation of iron availability and highlight how resident macrophages are critical for this process. This tissue-dependent regulation has broad implications for understanding both resident macrophage function and tissue iron homeostasis in health and disease.
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Affiliation(s)
- Nathan C Winn
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Katrina M Volk
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Alyssa H Hasty
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,VA Tennessee Valley Healthcare System, Nashville, Tennessee, USA
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16
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Mostafa GG, Zahran FE, Omer SA, Ibrahim A, Elhakeem H. The Effect of Serum Ferritin Level on Gonadal, Prolactin, Thyroid Hormones, and Thyroid Stimulating Hormone in Adult Males with Sickle Cell Anemia. J Blood Med 2020; 11:27-32. [PMID: 32095088 PMCID: PMC6995285 DOI: 10.2147/jbm.s232562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 01/15/2020] [Indexed: 01/16/2023] Open
Abstract
Background Sickle cell anaemia (SCA) is an inherited hemoglobinopathy resulting in sickling of erythrocytes that cause micro-vascular obstruction leading to acute complications and chronic organ damage. Adults with SCA have endocrine complications and metabolic alterations. The aim of this study was to assess the association between gonadal and thyroid hormones with iron indices and to explore the potential association between serum ferritin levels and sex hormones in adult males with sickle cell disease in New Prince Saud Bin Jalawy Hospital (NPSBJH) in Hofuf city (Eastern region of Saudi Arabia) where there are many patients with SCA. Methods A cross-sectional analytical study was carried out in the Haematology Clinic at NPSBJH in 2018. A total of eighty (80) male patients with sickle cell anaemia were included in this study and were divided into two groups according to serum ferritin level. Group I (G-I): Included 40 male patients with high serum ferritin level and group II (G-II): included 40 male patients with normal serum ferritin level. Results There was a significant difference in height/cm between GI and Gil, P value= 0.006. Serum ferritin was significantly higher in GI (P value= 0.000), and serum TIBC was significantly higher in G-II. (P value= 0.022). Testosterone level was significantly higher in G-II (P value= 0.018). Luteinizing hormone (LH) was significantly higher in group I (P-value 0.019). There was a significant relation between serum ferritin level in G-I and the following: serum iron, TIBC, serum testosterone, LH, prolactin, free T3 and free T4. Conclusion Adult males with SCD with high serum ferritin level were shorter than adult males with SCD who had normal serum ferritin level and had a significant lower level of serum testosterone and significant high level of LH and this was most likely due to endocrine dysfunction secondary to high ferritin level and iron overload.
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Affiliation(s)
- Gamal G Mostafa
- Department of Clinical Adult Hematology, Faculty of Medicine, Aswan University, Aswan, Egypt; Haematology, Hereditary Blood Disease Centre- Hofuf, Hofuf, Kingdom of Saudi Arabia
| | - Fawkia E Zahran
- Department of Internal Medicine, Faculty of Medicine for Girls, Al- Azhar University, Cairo, Egypt.,King Fahad Hospital, Hofuf, Al Hofuf, Kingdom of Saudi Arabia
| | - Sawsan A Omer
- King Fahad Hospital, Hofuf, Al Hofuf, Kingdom of Saudi Arabia.,Department of Internal Medicine, Faculty of Medicine, University of Gezira, Wad Madani, Sudan
| | - Ahmed Ibrahim
- Department of Community Medicine, Faculty of Medicine, University of Western Kordofan, Al-Foula, Sudan; Prince Sultan Cardiac Center, Al Hassa, Al Hasa, Kingdom of Saudi Arabia
| | - Heba Elhakeem
- Clinical Pathology Department, Faculty of Medicine for Girls, Alazhar University, Cairo, Egypt
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17
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Cavalli G, Cenci S. Autophagy and Protein Secretion. J Mol Biol 2020; 432:2525-2545. [PMID: 31972172 DOI: 10.1016/j.jmb.2020.01.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/08/2020] [Accepted: 01/12/2020] [Indexed: 12/13/2022]
Abstract
Autophagy - conventional for macroautophagy - is a major recycling strategy that ensures cellular homeostasis through the selective engulfment of cytoplasmic supramolecular cargos in double membrane vesicles and their rapid dispatch to the lysosome for digestion. As autophagy operates in the cytoplasm, its interference with secretory proteins, that is, proteins destined to the plasma membrane or the extracellular space, generally synthesized and routed within the endoplasmic reticulum (ER), has been relatively overlooked in the past. However, mounting evidence reveals that autophagy in fact heavily regulates protein secretion through diverse mechanisms. First, autophagy is closely involved in the unconventional secretion of leaderless proteins, a pool of proteins destined extracellularly, but lacking an ER-targeted leader sequence, and thus manufactured in the cytosol. Autophagy-related (ATG) genes now appear instrumental to the underlying pathways, hence the recently coined concept of secretory autophagy, or better ATG gene-dependent secretion. Indeed, ATG genes regulate unconventional protein secretion at multiple levels, ranging from intracellular inflammatory signaling, for example, through the control of mitochondrial health and inflammasome activity, to trafficking of leaderless proteins. Moreover, perhaps less expectedly, autophagy also participates in the control of conventional secretion, intersecting the secretory apparatus at multiple points, though with surprising differences among professional secretory cell types that disclose remarkable and unpredicted specificity. This review synopsizes the multiple mechanisms whereby autophagy interfaces with conventional and unconventional protein secretory pathways and discusses the relative teleology. Altogether, the diverse controls exerted on protein secretion broaden and deepen the homeostatic significance of autophagy within the cell.
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Affiliation(s)
- Giulio Cavalli
- Unit of Immunology, Rheumatology, Allergy and Rare Diseases, Ospedale San Raffaele, Milano, Italy; Vita-Salute San Raffaele University, Milano, Italy
| | - Simone Cenci
- Vita-Salute San Raffaele University, Milano, Italy; Unit of Age Related Diseases, Division of Genetics and Cell Biology, Ospedale San Raffaele, Milano, Italy.
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18
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He J, Fan K, Yan X. Ferritin drug carrier (FDC) for tumor targeting therapy. J Control Release 2019; 311-312:288-300. [PMID: 31494184 DOI: 10.1016/j.jconrel.2019.09.002] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/03/2019] [Accepted: 09/03/2019] [Indexed: 01/19/2023]
Abstract
Ferritin is an iron storage protein that plays a key role in iron homeostasis and anti-oxidation of cells. Due to its unique architecture of 24 self-assembling subunits and hollow cavity capable of encapsulating drugs, and an outer surface that can be modified genetically and chemically for additional functionality, ferritin has recently emerged as a promising drug delivery vehicle. Recent research demonstrated that unmodified human heavy chain ferritin binds to its receptor, transferrin receptor 1 (TfR1), in different types of tumor tissues, including lung and breast cancer, thus highlighting the potential use of ferritin for tumor-targeting applications. In this review, we consider the many favorable characteristics of ferritin drug carriers (FDCs) for tumor drug delivery. In particular, compared with antibody-drug conjugates (ADCs), ferritin exhibits superiority in a range of attributes, including drug loading ability, thermostability, and ease of production. Thus, the emergence of FDCs may be the next step in targeted cancer therapy.
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Affiliation(s)
- Jiuyang He
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Protein and Peptide Pharmaceutical, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kelong Fan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Protein and Peptide Pharmaceutical, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
| | - Xiyun Yan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Protein and Peptide Pharmaceutical, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China; Joint Laboratory of Nanozymes in Zhengzhou University, Academy of Medical Sciences, Zhengzhou University,Zhengzhou 450052, China.
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19
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Ghio AJ, Soukup JM, Stonehuerner J, Tong H, Richards J, Gilmour MI, Madden MC, Shen Z, Kantrow SP. Quartz Disrupts Iron Homeostasis in Alveolar Macrophages To Impact a Pro-Inflammatory Effect. Chem Res Toxicol 2019; 32:1737-1747. [PMID: 31407890 DOI: 10.1021/acs.chemrestox.8b00301] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The biological response of bronchial epithelial cells to particles is associated with a sequestration of cell metal by the particle surface and a subsequent disruption in host iron homeostasis. The macrophage is the cell type resident in the respiratory tract that is most likely to make initial contact with inhaled particles. We tested the postulates that (1) silica, a prototypical particle, disrupts iron homeostasis in alveolar macrophages (AMs); and (2) the altered iron homeostasis results in both an oxidative stress and pro-inflammatory effects. Human AMs (1.0 × 106/mL) demonstrated an increased import of iron following particle exposure with nonheme iron concentrations of 0.57 ± 0.03, 1.72 ± 0.09, 0.88 ± 0.09, and 3.21 ± 0.11 ppm in cells exposed for 4 h to media, 500 μM ferric ammonium citrate (FAC), 100 μg/mL silica, and both silica and FAC, respectively. Intracellular ferritin concentrations and iron release were similarly increased after AM exposure to FAC and silica. Silica increased oxidant generation by AMs measured using both dichlorofluorescein diacetate fluorescence and reduction of nitroblue tetrazolium salt. Concentrations of interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-α in macrophage supernatant increased following 100 μg/mL silica exposure for 24 h. Treatment of AMs with 500 μM FAC decreased both oxidant generation and cytokine release associated with silica exposure, supporting a dependence of these effects on sequestration of cell metal by the particle surface. We conclude that (1) silica exposure disrupts iron homeostasis resulting in increased import, accumulation, and release of the metal; and (2) the altered iron homeostasis following silica exposure impacts oxidant generation and pro-inflammatory effects.
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Affiliation(s)
- Andrew J Ghio
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - Joleen M Soukup
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - Jacqueline Stonehuerner
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - Haiyan Tong
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - Judy Richards
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - M Ian Gilmour
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - Michael C Madden
- National Health and Environmental Effects Research Laboratory , Environmental Protection Agency , Chapel Hill North Carolina 27514 , United States
| | - Zhiwei Shen
- Section of Pulmonary and Critical Care Medicine, Department of Medicine , Louisiana State University Health Sciences Center , New Orleans , Louisiana 70112 , United States
| | - Stephen P Kantrow
- Section of Pulmonary and Critical Care Medicine, Department of Medicine , Louisiana State University Health Sciences Center , New Orleans , Louisiana 70112 , United States
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20
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Heggland EI, Tröße C, Eichner C, Nilsen F. Heavy and light chain homologs of ferritin are essential for blood-feeding and egg production of the ectoparasitic copepod Lepeophtheirus salmonis. Mol Biochem Parasitol 2019; 232:111197. [PMID: 31251953 DOI: 10.1016/j.molbiopara.2019.111197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/13/2019] [Accepted: 06/19/2019] [Indexed: 12/21/2022]
Abstract
The salmon louse, Lepeophtheirus salmonis, is a hematophagous ectoparasite of salmonid fish. Due to its blood-feeding activity, the louse is exposed to great amounts of iron, which is an essential, yet potentially toxic mineral. The major known iron storage protein is ferritin, which the salmon louse encodes four genes of (LsFer1-4). Two of the ferritins are predicted to be secreted. These are one of the heavy chain homologs (LsFer1) and the light chain homolog (LsFer2). Here, we perform functional studies and characterize the two secreted ferritins. Our results show that knocking down LsFer1 and LsFer2 both negatively affect the parasite's physiology, as it is not able to properly feed and reproduce. In a starvation experiment, the transcript levels of both LsFer1 and LsFer2 decrease during the starvation period. Combined, these results demonstrate the importance of these genes for the normal parasite biology, and they could thus potentially be targets for pest management.
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Affiliation(s)
- Erna Irene Heggland
- Department of Biological Sciences & Sea Lice Research Centre (SLRC), University of Bergen, Norway.
| | | | - Christiane Eichner
- Department of Biological Sciences & Sea Lice Research Centre (SLRC), University of Bergen, Norway
| | - Frank Nilsen
- Department of Biological Sciences & Sea Lice Research Centre (SLRC), University of Bergen, Norway
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21
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Yang L, Li X, Wu Y, Zhang J, Li W, Wang Q. Iron regulatory protein is involved in the immune defense of the Chinese mitten crab Eriocheir sinensis. FISH & SHELLFISH IMMUNOLOGY 2019; 89:632-640. [PMID: 30995542 DOI: 10.1016/j.fsi.2019.04.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 04/04/2019] [Accepted: 04/11/2019] [Indexed: 06/09/2023]
Abstract
Iron homeostasis is vital to organismal health; it is maintained by the iron regulatory protein (IRP)-iron-responsive element (IRE) signaling pathway. In the Chinese mitten crab Eriocheir sinensis, EsFer-1 and EsFer-2 reportedly have a putative IRE, but an IRP has not yet been identified. In this study, we successfully amplified the full-length cDNA of EsIRP using gene cloning and rapid amplification of cDNA ends techniques. The length of this cDNA was 4474 bp, and it included a 2682-bp open reading frame encoding 893 amino acids. Using quantitative real-time PCR, mRNA transcripts of EsIRP were detected in various tissues. The highest and lowest expression level was detected in the muscle and gills, respectively. In response to Staphylococcus aureus and Vibrio parahaemolyticus challenge, the transcription level of EsIRP was downregulated and that of EsFer-1 and EsFer-2 was upregulated in hemocytes. EsIRP knockdown resulted in increased expression of both EsFer-1 and EsFer-2. After EsFer-1 and EsFer-2 knockdown, the bacterial clearance ability of E. sinensis against S. aureus and V. parahaemolyticus was impaired. In conclusion, our results suggest that the IRP-IRE signaling pathway plays an important role in the innate immune system response in E. sinensis.
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Affiliation(s)
- Lei Yang
- Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Xuejie Li
- Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Yaomeng Wu
- Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Jiashun Zhang
- Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Weiwei Li
- Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Qun Wang
- Laboratory of Invertebrate Immunological Defense and Reproductive Biology, School of Life Sciences, East China Normal University, Shanghai, China.
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22
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Dziuba N, Hardy J, Lindahl PA. Low-molecular-mass iron in healthy blood plasma is not predominately ferric citrate. Metallomics 2019; 10:802-817. [PMID: 29808889 DOI: 10.1039/c8mt00055g] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Blood contains a poorly characterized pool of labile iron called non-transferrin-bound iron (NTBI). In patients with iron-overload diseases such as hemochromatosis, NTBI accumulates in the liver, heart, and other organs. This material is probably nonproteinaceous and low molecular mass (LMM). However, the number, concentration, mass, and chemical composition of NTBI species remain unknown despite decades of effort. Here, solutions of plasma from humans, pigs, horses, and mice were passed through a 10 kDa cutoff membrane, affording flow-through solutions (FTSs) containing ∼1 μM iron. The FTSs were subjected to size-exclusion liquid chromatography at pH 8.5, 6.5, and 4.5. Iron was detected by an online inductively-coupled-plasma mass spectrometer. LC-ICP-MS chromatograms of the FTSs exhibited 2-6 iron-containing species with apparent masses between 400 and 2500 Da. Their approximate concentrations in plasma were 10-8-10-7 M. Not every FTS sample contained every LMM iron species, indicating individual variations. The most reproducible iron species had apparent masses of 400 and 500 Da. Chromatograms of the FTSs from established hemochromatosis patients exhibited no significant differences relative to controls. The peak positions and intensities depended on column pH. Some FTS iron adsorbed onto the column, especially at higher pH. Column-adsorbing-iron coordinated apo-transferrin whereas the more tightly coordinated iron species did not. Ferric citrate standards exhibited LMM iron peaks that were similar to but not the same as those obtained in FTSs. The results indicate that the LMM iron species in healthy blood plasma is not primarily ferric citrate; however, this may be one of many contributing complexes.
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Affiliation(s)
- Nathaniel Dziuba
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
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23
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Wade QW, Chiou B, Connor JR. Iron uptake at the blood-brain barrier is influenced by sex and genotype. PHARMACOLOGY OF RESTLESS LEGS SYNDROME (RLS) 2019; 84:123-145. [DOI: 10.1016/bs.apha.2019.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Carlos AR, Weis S, Soares MP. Cross-Talk Between Iron and Glucose Metabolism in the Establishment of Disease Tolerance. Front Immunol 2018; 9:2498. [PMID: 30425714 PMCID: PMC6218924 DOI: 10.3389/fimmu.2018.02498] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 10/10/2018] [Indexed: 12/13/2022] Open
Abstract
Infectious diseases are associated with disruption of host homeostasis. This can be triggered directly by pathogens or indirectly by host immune-driven resistance mechanisms. Disease tolerance is a defense strategy against infection that sustains host homeostasis, without exerting a direct negative impact on pathogens. The mechanisms governing disease tolerance encompass host metabolic responses that maintain vital homeostatic parameters within a range compatible with survival. Central to this defense strategy is the host's ability to sense and adapt to variations in nutrients, such as iron and glucose. Here we address how host responses regulating iron and glucose metabolism interact to establish disease tolerance and possibly modulate resistance to infection.
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Affiliation(s)
| | - Sebastian Weis
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany.,Institute for Infectious Disease and Infection Control, Jena University Hospital, Jena, Germany.,Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
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25
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Nairz M, Dichtl S, Schroll A, Haschka D, Tymoszuk P, Theurl I, Weiss G. Iron and innate antimicrobial immunity-Depriving the pathogen, defending the host. J Trace Elem Med Biol 2018; 48:118-133. [PMID: 29773170 DOI: 10.1016/j.jtemb.2018.03.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/25/2018] [Accepted: 03/06/2018] [Indexed: 02/08/2023]
Abstract
The acute-phase response is triggered by the presence of infectious agents and danger signals which indicate hazards for the integrity of the mammalian body. One central feature of this response is the sequestration of iron into storage compartments including macrophages. This limits the availability of this essential nutrient for circulating pathogens, a host defence strategy known as 'nutritional immunity'. Iron metabolism and the immune response are intimately linked. In infections, the availability of iron affects both the efficacy of antimicrobial immune pathways and pathogen proliferation. However, host strategies to withhold iron from microbes vary according to the localization of pathogens: Infections with extracellular bacteria such as Staphylococcus aureus, Streptococcus, Klebsiella or Yersinia stimulate the expression of the iron-regulatory hormone hepcidin which targets the cellular iron-exporter ferroportin-1 causing its internalization and blockade of iron egress from absorptive enterocytes in the duodenum and iron-recycling macrophages. This mechanism disrupts both routes of iron delivery to the circulation, contributes to iron sequestration in the mononuclear phagocyte system and mediates the hypoferraemia of the acute phase response subsequently resulting in the development of anaemia of inflammation. When intracellular microbes are present, other strategies of microbial iron withdrawal are needed. For instance, in macrophages harbouring intracellular pathogens such as Chlamydia, Mycobacterium tuberculosis, Listeria monocytogenes or Salmonella Typhimurium, ferroportin-1-mediated iron export is turned on for the removal of iron from infected cells. This also leads to reduced iron availability for intra-macrophage pathogens which inhibits their growth and in parallel strengthens anti-microbial effector pathways of macrophages including the formation of inducible nitric oxide synthase and tumour necrosis factor. Iron plays a key role in infectious diseases both as modulator of the innate immune response and as nutrient for microbes. We need to gain a more comprehensive understanding of how the body can differentially respond to infection by extra- or intracellular pathogens. This knowledge may allow us to modulate mammalian iron homeostasis pharmaceutically and to target iron-acquisition systems of pathogens, thus enabling us to treat infections with novel strategies that act independent of established antimicrobials.
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Affiliation(s)
- Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria.
| | - Stefanie Dichtl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria
| | - Andrea Schroll
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Austria
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26
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Allen RP, Picchietti DL, Auerbach M, Cho YW, Connor JR, Earley CJ, Garcia-Borreguero D, Kotagal S, Manconi M, Ondo W, Ulfberg J, Winkelman JW. Evidence-based and consensus clinical practice guidelines for the iron treatment of restless legs syndrome/Willis-Ekbom disease in adults and children: an IRLSSG task force report. Sleep Med 2017; 41:27-44. [PMID: 29425576 DOI: 10.1016/j.sleep.2017.11.1126] [Citation(s) in RCA: 170] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Brain iron deficiency has been implicated in the pathophysiology of RLS, and current RLS treatment guidelines recommend iron treatment when peripheral iron levels are low. In order to assess the evidence on the oral and intravenous (IV) iron treatment of RLS and periodic limb movement disorder (PLMD) in adults and children, the International Restless Legs Syndrome Study Group (IRLSSG) formed a task force to review these studies and provide evidence-based and consensus guidelines for the iron treatment of RLS in adults, and RLS and PLMD in children. METHODS A literature search was performed to identify papers appearing in MEDLINE from its inception to July 2016. The following inclusion criteria were used: human research on the treatment of RLS or periodic limb movements (PLM) with iron, sample size of at least five, and published in English. Two task force members independently evaluated each paper and classified the quality of evidence provided. RESULTS A total of 299 papers were identified, of these 31 papers met the inclusion criteria. Four studies in adults were given a Class I rating (one for IV iron sucrose, and three for IV ferric carboxymaltose); only Class IV studies have evaluated iron treatment in children. Ferric carboxymaltose (1000 mg) is effective for treating moderate to severe RLS in those with serum ferritin <300 μg/l and could be used as first-line treatment for RLS in adults. Oral iron (65 mg elemental iron) is possibly effective for treating RLS in those with serum ferritin ≤75 μg/l. There is insufficient evidence to make conclusions on the efficacy of oral iron or IV iron in children. CONCLUSIONS Consensus recommendations based on clinical practice are presented, including when to use oral iron or IV iron, and recommendations on repeated iron treatments. New iron treatment algorithms, based on evidence and consensus opinion have been developed.
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Affiliation(s)
- Richard P Allen
- Department of Neurology, Johns Hopkins University, Hopkins Bayview Medical Center, Baltimore, MD, USA.
| | - Daniel L Picchietti
- University of Illinois College of Medicine at Urbana-Champaign and Carle Foundation Hospital, Urbana, IL, USA
| | - Michael Auerbach
- Department of Medicine, Georgetown University, Washington DC, USA
| | - Yong Won Cho
- Department of Neurology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - James R Connor
- Department of Neurosurgery, Penn State Hershey Medical Center, Hershey PA, USA
| | - Christopher J Earley
- Department of Neurology, Johns Hopkins University, Hopkins Bayview Medical Center, Baltimore, MD, USA
| | | | - Suresh Kotagal
- Department of Neurology and the Center for Sleep Medicine, Mayo Clinic, Rochester, MN, USA
| | - Mauro Manconi
- Sleep and Epilepsy Center, Neurocenter of Southern Switzerland, Civic Hospital of Lugano, Lugano, Switzerland
| | - William Ondo
- Methodist Neurological Institute, Weill Cornell Medical School Houston, TX, USA
| | - Jan Ulfberg
- Sleep Disorders Department, Capio Health Center, Örebro, Sweden
| | - John W Winkelman
- Departments of Psychiatry and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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27
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Malik IA, Wilting J, Ramadori G, Naz N. Reabsorption of iron into acutely damaged rat liver: A role for ferritins. World J Gastroenterol 2017; 23:7347-7358. [PMID: 29151689 PMCID: PMC5685841 DOI: 10.3748/wjg.v23.i41.7347] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/22/2017] [Accepted: 09/13/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To studied iron metabolism in liver, spleen, and serum after acute liver-damage, in relation to surrogate markers for liver-damage and repair.
METHODS Rats received intraperitoneal injection of the hepatotoxin thioacetamide (TAA), and were sacrificed regularly between 1 and 96 h thereafter. Serum levels of transaminases and iron were measured using conventional laboratory assays. Liver tissue was used for conventional histology, immunohistology, and iron staining. The expression of acute-phase cytokines, ferritin light chain (FTL), and ferritin heavy chain (FTH) was investigated in the liver by qRT-PCR. Western blotting was used to investigate FTL and FTH in liver tissue and serum. Liver and spleen tissue was also used to determine iron concentrations.
RESULTS After a short initial decrease, iron serum concentrations increased in parallel with serum transaminase (aspartate aminotransferase and alanine aminotransferase) levels, which reached a maximum at 48 h, and decreased thereafter. Similarly, after 48 h a significant increase in FTL, and after 72h in FTH was detected in serum. While earliest morphological signs of inflammation in liver were visible after 6 h, increased expression of the two acute-phase cytokines IFN-γ (1h) and IL-1β (3h) was detectable earlier, with maximum values after 12-24 h. Iron concentrations in liver tissue increased steadily between 1 h and 48 h, and remained high at 96 h. In contrast, spleen iron concentrations remained unchanged until 48 h, and increased mildly thereafter (96 h). Although tissue iron staining was negative, hepatic FTL and FTH protein levels were strongly elevated. Our results reveal effects on hepatic iron concentrations after direct liver injury by TAA. The increase of liver iron concentrations may be due to the uptake of a significant proportion of the metal by healthy hepatocytes, and only to a minor extent by macrophages, as spleen iron concentrations do not increase in parallel. The temporary increase of iron, FTH and transaminases in serum is obviously due to their release by damaged hepatocytes.
CONCLUSION Increased liver iron levels may be the consequence of hepatocyte damage. Iron released into serum by damaged hepatocytes is obviously transported back and stored via ferritins.
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Affiliation(s)
- Ihtzaz Ahmed Malik
- Institute of Anatomy and Cell Biology, University Medical Center, D-37075 Goettingen, Germany
| | - Jörg Wilting
- Institute of Anatomy and Cell Biology, University Medical Center, D-37075 Goettingen, Germany
| | - Giuliano Ramadori
- Department of Gastroenterology and Endocrinology, University Medical Center, D-37075 Goettingen, Germany
| | - Naila Naz
- Faculty of Life Sciences, The University of Manchester, Manchester M13 9PL, United Kingdom
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28
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Ferritin is secreted via 2 distinct nonclassical vesicular pathways. Blood 2017; 131:342-352. [PMID: 29074498 DOI: 10.1182/blood-2017-02-768580] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 10/18/2017] [Indexed: 12/11/2022] Open
Abstract
Ferritin turnover plays a major role in tissue iron homeostasis, and ferritin malfunction is associated with impaired iron homeostasis and neurodegenerative diseases. In most eukaryotes, ferritin is considered an intracellular protein that stores iron in a nontoxic and bioavailable form. In insects, ferritin is a classically secreted protein and plays a major role in systemic iron distribution. Mammalian ferritin lacks the signal peptide for classical endoplasmic reticulum-Golgi secretion but is found in serum and is secreted via a nonclassical lysosomal secretion pathway. This study applied bioinformatics and biochemical tools, alongside a protein trafficking mouse models, to characterize the mechanisms of ferritin secretion. Ferritin trafficking via the classical secretion pathway was ruled out, and a 2:1 distribution of intracellular ferritin between membrane-bound compartments and the cytosol was observed, suggesting a role for ferritin in the vesicular compartments of the cell. Focusing on nonclassical secretion, we analyzed mouse models of impaired endolysosomal trafficking and found that ferritin secretion was decreased by a BLOC-1 mutation but increased by BLOC-2, BLOC-3, and Rab27A mutations of the cellular trafficking machinery, suggesting multiple export routes. A 13-amino-acid motif unique to ferritins that lack the secretion signal peptide was identified on the BC-loop of both subunits and plays a role in the regulation of ferritin secretion. Finally, we provide evidence that secretion of iron-rich ferritin was mediated via the multivesicular body-exosome pathway. These results enhance our understanding of the mechanism of ferritin secretion, which is an important piece in the puzzle of tissue iron homeostasis.
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29
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Weis S, Carlos AR, Moita MR, Singh S, Blankenhaus B, Cardoso S, Larsen R, Rebelo S, Schäuble S, Del Barrio L, Mithieux G, Rajas F, Lindig S, Bauer M, Soares MP. Metabolic Adaptation Establishes Disease Tolerance to Sepsis. Cell 2017. [PMID: 28622511 PMCID: PMC5480394 DOI: 10.1016/j.cell.2017.05.031] [Citation(s) in RCA: 177] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sepsis is an often lethal syndrome resulting from maladaptive immune and metabolic responses to infection, compromising host homeostasis. Disease tolerance is a defense strategy against infection that preserves host homeostasis without exerting a direct negative impact on pathogens. Here, we demonstrate that induction of the iron-sequestering ferritin H chain (FTH) in response to polymicrobial infections is critical to establish disease tolerance to sepsis. The protective effect of FTH is exerted via a mechanism that counters iron-driven oxidative inhibition of the liver glucose-6-phosphatase (G6Pase), and in doing so, sustains endogenous glucose production via liver gluconeogenesis. This is required to prevent the development of hypoglycemia that otherwise compromises disease tolerance to sepsis. FTH overexpression or ferritin administration establish disease tolerance therapeutically. In conclusion, disease tolerance to sepsis relies on a crosstalk between adaptive responses controlling iron and glucose metabolism, required to maintain blood glucose within a physiologic range compatible with host survival. Ferritin is required to establish disease tolerance to sepsis Iron heme represses liver G6Pase during sepsis Ferritin counters G6Pase repression and sustains blood glucose levels after sepsis Liver gluconeogenesis is required to establish disease tolerance to sepsis
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Affiliation(s)
- Sebastian Weis
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal; Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07747 Jena, Germany
| | | | | | - Sumnima Singh
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal
| | | | - Silvia Cardoso
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal
| | - Rasmus Larsen
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal
| | - Sofia Rebelo
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal
| | - Sascha Schäuble
- Language and Information Engineering Laboratory, Friedrich-Schiller-University, 07743 Jena, Germany
| | | | - Gilles Mithieux
- INSERM U1213, Université Claude Bernard Lyon, 69100 Villeurbanne, France
| | - Fabienne Rajas
- INSERM U1213, Université Claude Bernard Lyon, 69100 Villeurbanne, France
| | - Sandro Lindig
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07747 Jena, Germany; Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
| | - Michael Bauer
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07747 Jena, Germany; Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
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30
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Abstract
Iron is an essential element for numerous fundamental biologic processes, but excess iron is toxic. Abnormalities in systemic iron balance are common in patients with chronic kidney disease and iron administration is a mainstay of anemia management in many patients. This review provides an overview of the essential role of iron in biology, the regulation of systemic and cellular iron homeostasis, how imbalances in iron homeostasis contribute to disease, and the implications for chronic kidney disease patients.
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Affiliation(s)
- Som Dev
- Division of Nephrology, Program in Membrane Biology, Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jodie L Babitt
- Division of Nephrology, Program in Membrane Biology, Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
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31
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Karimi M, Zangabad PS, Mehdizadeh F, Malekzad H, Ghasemi A, Bahrami S, Zare H, Moghoofei M, Hekmatmanesh A, Hamblin MR. Nanocaged platforms: modification, drug delivery and nanotoxicity. Opening synthetic cages to release the tiger. NANOSCALE 2017; 9:1356-1392. [PMID: 28067384 PMCID: PMC5300024 DOI: 10.1039/c6nr07315h] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanocages (NCs) have emerged as a new class of drug-carriers, with a wide range of possibilities in multi-modality medical treatments and theranostics. Nanocages can overcome such limitations as high toxicity caused by anti-cancer chemotherapy or by the nanocarrier itself, due to their unique characteristics. These properties consist of: (1) a high loading-capacity (spacious interior); (2) a porous structure (analogous to openings between the bars of the cage); (3) enabling smart release (a key to unlock the cage); and (4) a low likelihood of unfavorable immune responses (the outside of the cage is safe). In this review, we cover different classes of NC structures such as virus-like particles (VLPs), protein NCs, DNA NCs, supramolecular nanosystems, hybrid metal-organic NCs, gold NCs, carbon-based NCs and silica NCs. Moreover, NC-assisted drug delivery including modification methods, drug immobilization, active targeting, and stimulus-responsive release mechanisms are discussed, highlighting the advantages, disadvantages and challenges. Finally, translation of NCs into clinical applications, and an up-to-date assessment of the nanotoxicology considerations of NCs are presented.
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Affiliation(s)
- Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Parham Sahandi Zangabad
- Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science (TUOMS), Tabriz, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Department of Materials Science and Engineering, Sharif University of Technology, 11365-9466, Tehran, Iran
- Nanomedicine Research Association (NRA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | | | - Hedieh Malekzad
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Faculty of Chemistry, Kharazmi University of Tehran, Tehran, Iran
| | - Alireza Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, 11365-9466, Tehran, Iran
| | - Sajad Bahrami
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Zare
- Biomaterials Group, Materials Science & Engineering Department, Iran University of Science & Technology, P.O. Box 1684613114 Tehran, Iran
| | - Mohsen Moghoofei
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amin Hekmatmanesh
- Laboratory of Intelligent Machines, Lappeenranta University of Technology, 53810, Finland
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, 02139, USA
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32
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Mignogna C, Barca I, Di Vito A, Puleo F, Malara N, Giudice A, Giudice M, Barni T, Donato G, Cristofaro MG. Extravascular type of intravascular papillary endothelial hyperplasia mimicking parotid gland neoplasia and the possible role of ferritin in the pathogenesis: A case report. Mol Clin Oncol 2016; 6:193-196. [PMID: 28357092 DOI: 10.3892/mco.2016.1117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 12/09/2016] [Indexed: 01/30/2023] Open
Abstract
Intravascular papillary endothelial hyperplasia (IPEH) is defined as a vascular lesion characterized by extensive proliferation of vascular endothelial cells. This lesion was first described by Pierre Masson in 1923 as intravascular hemangioendothelioma. The most frequent sites of involvement are the skin and subcutis. IPEH comprises ~2% of the vascular tumors of the skin and subcutaneous tissue and it has a predilection for the head, neck, trunk and the extremities. The diagnosis is based on histopathology. We herein present the second case of Masson's tumor of the parotid gland described in literature. The patient was a 70-year-old female. Magnetic resonance imaging revealed an irregular lesion with smooth margins, initially considered to be compatible with pleomorphic adenoma. Immunohistochemical analysis revealed positivity of the tumor cells for ferritin heavy and light chains, vimentin and CD31. The aim of the present study was to emphasize the immunohistochemical characteristics and briefly discuss the potential role of ferritin in the pathogenesis of IPEH.
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Affiliation(s)
- Chiara Mignogna
- Department of Health Science, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Ida Barca
- Department of Experimental and Clinical Medicine, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Anna Di Vito
- Department of Experimental and Clinical Medicine, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Francesca Puleo
- Department of Health Science, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Natalia Malara
- Department of Health Science, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Amerigo Giudice
- Department of Health Science, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Mario Giudice
- Department of Experimental and Clinical Medicine, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Tullio Barni
- Department of Experimental and Clinical Medicine, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Giuseppe Donato
- Department of Health Science, Magna Græcia University, I-88100 Catanzaro, Italy
| | - Maria Giulia Cristofaro
- Department of Experimental and Clinical Medicine, Magna Græcia University, I-88100 Catanzaro, Italy
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Foka P, Dimitriadis A, Karamichali E, Kyratzopoulou E, Giannimaras D, Koskinas J, Varaklioti A, Mamalaki A, Georgopoulou U. Alterations in the iron homeostasis network: A driving force for macrophage-mediated hepatitis C virus persistency. Virulence 2016; 7:679-90. [PMID: 27058404 PMCID: PMC4991317 DOI: 10.1080/21505594.2016.1175700] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/09/2016] [Accepted: 04/01/2016] [Indexed: 02/06/2023] Open
Abstract
Mechanisms that favor Hepatitis C virus (HCV) persistence over clearance are unclear, but involve defective innate immunity. Chronic infection is characterized by hepatic iron overload, hyperferraemia and hyperferittinaemia. Hepcidin modulates iron egress via ferroportin and its storage in ferritin. Chronic HCV patients have decreased hepcidin, while HCV replication is modified by HAMP silencing. We aimed to investigate interactions between HCV and hepcidin, during acute and chronic disease, and putative alterations in cellular iron homeostasis that enhance HCV propagation and promote viral persistence. Thus, we used HCV JFH-1-infected co-cultures of Huh7.5 hepatoma and THP-1 macrophage cells, HCV patients' sera and Huh7 hepcidin-expressing cells transfected with HCV replicons. Hepcidin levels were elevated in acutely infected patients, but correlated with viral load in chronic patients. HAMP expression was up-regulated early in HCV infection in vitro, with corresponding changes in ferritin and FPN. Hepcidin overexpression enhanced both viral translation and replication. In HCV-infected co-cultures, we observed increased hepcidin, reduced hepatoma ferritin and a concurrent rise in macrophaghic ferritin over time. Altered iron levels complemented amplified replication in hepatoma cells and one replication round in macrophages. Iron-loading of macrophages led to enhancement of hepatic HCV replication through reversed ferritin "flow." Viral transmissibility from infected macrophages to naïve hepatoma cells was induced by iron. We propose that HCV control over iron occurs both by intracellular iron sequestration, through hepcidin, and intercellular iron mobilisation via ferritin, as means toward enhanced replication. Persistence could be achieved through HCV-induced changes in macrophagic iron that enhances viral replication in these cells.
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Affiliation(s)
- Pelagia Foka
- Molecular Virology Laboratory, Hellenic Pasteur Institute, Athens, Greece
- Molecular Biology and Immunobiotechnology Laboratory, Hellenic Pasteur Institute, Athens, Greece
| | - Alexios Dimitriadis
- Molecular Biology and Immunobiotechnology Laboratory, Hellenic Pasteur Institute, Athens, Greece
| | - Eirini Karamichali
- Molecular Virology Laboratory, Hellenic Pasteur Institute, Athens, Greece
| | - Eleni Kyratzopoulou
- Molecular Biology and Immunobiotechnology Laboratory, Hellenic Pasteur Institute, Athens, Greece
| | - Dionyssios Giannimaras
- Molecular Biology and Immunobiotechnology Laboratory, Hellenic Pasteur Institute, Athens, Greece
| | - John Koskinas
- Second Department of Internal Medicine, Medical School of Athens, Hippokration Hospital, Athens, Greece
| | - Agoritsa Varaklioti
- Blood Center and National Center for Congenital Bleeding Disorders, Laiko General Hospital, Athens, Greece
| | - Avgi Mamalaki
- Molecular Biology and Immunobiotechnology Laboratory, Hellenic Pasteur Institute, Athens, Greece
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Extremely High Ferritinemia Associated with Haemophagocytic Lympho Histiocytosis (HLH). Indian J Clin Biochem 2016; 32:117-120. [PMID: 28149024 DOI: 10.1007/s12291-016-0559-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/10/2016] [Indexed: 10/22/2022]
Abstract
Hyperferritinemia (>10,000 ng/ml) is an important hallmark used as an indicator of infection triggered macrophage activation syndrome leading to hemophagocytic lympho histiocytosis (HLH). Measurement of serum ferritin can be used in diagnosis as well as disease monitoring indicator and prognosis related to HLH, cAPS, sepsis, neoplasm and inflammatory conditions. It is a major contributor to manage critically ill patients as predicting and monitoring indicator. It can be used as acute phase response in conditions of MAS, AOSD, cAPS etc. A case study in our hospital showed extremely high ferritin values along with low hemoglobin, elevated LDH and triglycerides with positive MRSA in sputum culture and macrophage proliferation and hemophagocytosis in the bone marrow examination. Patient showed definite inverse relation with steroid therapy and serum ferritin levels.
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Ferritin Is Required in Multiple Tissues during Drosophila melanogaster Development. PLoS One 2015; 10:e0133499. [PMID: 26192321 PMCID: PMC4508113 DOI: 10.1371/journal.pone.0133499] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/28/2015] [Indexed: 11/19/2022] Open
Abstract
In Drosophila melanogaster, iron is stored in the cellular endomembrane system inside a protein cage formed by 24 ferritin subunits of two types (Fer1HCH and Fer2LCH) in a 1:1 stoichiometry. In larvae, ferritin accumulates in the midgut, hemolymph, garland, pericardial cells and in the nervous system. Here we present analyses of embryonic phenotypes for mutations in Fer1HCH, Fer2LCH and in both genes simultaneously. Mutations in either gene or deletion of both genes results in a similar set of cuticular embryonic phenotypes, ranging from non-deposition of cuticle to defects associated with germ band retraction, dorsal closure and head involution. A fraction of ferritin mutants have embryonic nervous systems with ventral nerve cord disruptions, misguided axonal projections and brain malformations. Ferritin mutants die with ectopic apoptotic events. Furthermore, we show that ferritin maternal contribution, which varies reflecting the mother's iron stores, is used in early development. We also evaluated phenotypes arising from the blockage of COPII transport from the endoplasmic reticulum to the Golgi apparatus, feeding the secretory pathway, plus analysis of ectopically expressed and fluorescently marked Fer1HCH and Fer2LCH. Overall, our results are consistent with insect ferritin combining three functions: iron storage, intercellular iron transport, and protection from iron-induced oxidative stress. These functions are required in multiple tissues during Drosophila embryonic development.
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Dove RE, Leong-Smith P, Roos-Engstrand E, Pourazar J, Shah M, Behndig AF, Mudway IS, Blomberg A. Cigarette smoke-induced induction of antioxidant enzyme activities in airway leukocytes is absent in active smokers with COPD. Eur Clin Respir J 2015; 2:27837. [PMID: 26557249 PMCID: PMC4629722 DOI: 10.3402/ecrj.v2.27837] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 06/17/2015] [Accepted: 06/18/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Oxidative injury to the airway has been proposed as an important underlying mechanism in the pathogenesis of chronic obstructive pulmonary disease (COPD). As the extent of oxidant-mediated damage is dependent on the endogenous antioxidant defences within the airways, we examined whether COPD was associated with deficiencies in the antioxidant network within the respiratory tract lining fluids (RTLFs) and resident airway leukocytes. We hypothesised that COPD would be associated with both basal depression of antioxidant defences and impaired adaptive antioxidant responses to cigarette smoke. METHODS Low molecular weight and enzymatic antioxidants together with metal-handling proteins were quantified in bronchoalveolar lavage fluid and airway leukocytes, derived from current (n=9) and ex-smoking COPD patients (n=15), as well as from smokers with normal lung function (n=16) and healthy never smokers (n=13). RESULTS Current cigarette smoking was associated with an increase in ascorbate and glutathione within peripheral RTLFs in both smokers with normal lung function compared with healthy never smokers and in COPD smokers compared with COPD ex-smokers. In contrast, intra-cellular antioxidant enzyme activities (glutathione peroxidase, glutathione reductase, and catalase) were only up-regulated in smokers with normal lung function compared with healthy never smokers and not in actively smoking COPD patients relative to COPD ex-smokers. CONCLUSIONS We found no evidence of impaired basal antioxidant defences, within either the RTLFs or airway leukocytes in stable ex-smoking COPD patients compared with healthy never smoking controls. Current cigarette smoking induced an up-regulation of low molecular weight antioxidants in the RTLFs of both control subjects with normal lung function and patients with COPD. Importantly, the present data demonstrated a cigarette smoke-induced increase in intra-cellular antioxidant enzyme activities only within the smokers with normal lung function, implying that patients with COPD who continue to smoke will experience enhanced oxidative stress, prompting disease progression.
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Affiliation(s)
- Rosamund E. Dove
- Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine and Allergy, Umeå University, Umeå, Sweden
- MRC-PHE Centre for Environment and Health, School of Biomedical Sciences, Kings College London, London, UK
| | - Pheneatia Leong-Smith
- MRC-PHE Centre for Environment and Health, School of Biomedical Sciences, Kings College London, London, UK
| | - Ester Roos-Engstrand
- Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine and Allergy, Umeå University, Umeå, Sweden
| | - Jamshid Pourazar
- Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine and Allergy, Umeå University, Umeå, Sweden
| | - Mittal Shah
- MRC-PHE Centre for Environment and Health, School of Biomedical Sciences, Kings College London, London, UK
| | - Annelie F. Behndig
- Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine and Allergy, Umeå University, Umeå, Sweden
| | - Ian S. Mudway
- MRC-PHE Centre for Environment and Health, School of Biomedical Sciences, Kings College London, London, UK
| | - Anders Blomberg
- Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine and Allergy, Umeå University, Umeå, Sweden
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Cerebrospinal Fluid Markers of Macrophage and Lymphocyte Activation After Traumatic Brain Injury in Children. Pediatr Crit Care Med 2015; 16:549-57. [PMID: 25850867 PMCID: PMC4497935 DOI: 10.1097/pcc.0000000000000400] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVES The magnitude and role of the cellular immune response following pediatric traumatic brain injury remains unknown. We tested the hypothesis that macrophage/microglia and T-cell activation occurs following pediatric traumatic brain injury by measuring cerebrospinal fluid levels of soluble cluster of differentiation 163 and ferritin and soluble interleukin-2 receptor α, respectively, and determined whether these biomarkers were associated with relevant clinical variables and outcome. DESIGN Retrospective analysis of samples from an established, single-center cerebrospinal fluid bank. SETTING PICU in a tertiary children's hospital. PATIENTS Sixty-six pediatric patients after severe traumatic brain injury (Glasgow Coma Scale score < 8) who were 1 month to 16 years old and 17 control patients who were 1 month to 14 years old. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Cerebrospinal fluid levels of soluble cluster of differentiation 163, ferritin, and soluble interleukin-2 receptor α were determined by enzyme-linked immunosorbent assay at two time points (t1 = 17 ± 10 hr; t2 = 72 ± 15 hr) for each traumatic brain injury patient. Cerebrospinal fluid levels of soluble cluster of differentiation 163, ferritin, and soluble interleukin-2 receptor α after traumatic brain injury were compared with controls and analyzed for associations with age, patient sex, initial Glasgow Coma Scale score, diagnosis of abusive head trauma, the presence of hemorrhage on CT scan, and Glasgow Outcome Scale score. Cerebrospinal fluid level of soluble cluster of differentiation 163 was increased in traumatic brain injury patients at t2 versus t1 and controls (median, 95.4 ng/mL [interquartile range, 21.8-134.0 ng/mL] vs 31.0 ng/mL [5.7-77.7 ng/mL] and 27.8 ng/mL [19.1-43.1 ng/mL], respectively; p < 0.05). Cerebrospinal fluid level of ferritin was increased in traumatic brain injury patients at t2 and t1 versus controls (8.3 ng/mL [<7.5-19.8 ng/mL] and 8.9 ng/mL [<7.5-26.7 ng/mL] vs <7.5 ng/mL below lower limit of detection, respectively; p < 0.05). Cerebrospinal fluid levels of soluble interleukin-2 receptor α in traumatic brain injury patients at t2 and t1 were not different versus controls. Multivariate regression revealed associations between high ferritin and age 4 years or younger, lower Glasgow Coma Scale score, abusive head trauma, and unfavorable Glasgow Outcome Scale score. CONCLUSIONS Children with traumatic brain injury demonstrate evidence for macrophage activation after traumatic brain injury, and in terms of cerebrospinal fluid ferritin, this appears more prominent with young age, initial injury severity, abusive head trauma, and unfavorable outcome. Further study is needed to determine whether biomarkers of macrophage activation may be used to discriminate between aberrant and adaptive immune responses and whether inflammation represents a therapeutic target after traumatic brain injury.
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Bresgen N, Eckl PM. Oxidative stress and the homeodynamics of iron metabolism. Biomolecules 2015; 5:808-47. [PMID: 25970586 PMCID: PMC4496698 DOI: 10.3390/biom5020808] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 04/21/2015] [Accepted: 04/22/2015] [Indexed: 12/12/2022] Open
Abstract
Iron and oxygen share a delicate partnership since both are indispensable for survival, but if the partnership becomes inadequate, this may rapidly terminate life. Virtually all cell components are directly or indirectly affected by cellular iron metabolism, which represents a complex, redox-based machinery that is controlled by, and essential to, metabolic requirements. Under conditions of increased oxidative stress—i.e., enhanced formation of reactive oxygen species (ROS)—however, this machinery may turn into a potential threat, the continued requirement for iron promoting adverse reactions such as the iron/H2O2-based formation of hydroxyl radicals, which exacerbate the initial pro-oxidant condition. This review will discuss the multifaceted homeodynamics of cellular iron management under normal conditions as well as in the context of oxidative stress.
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Affiliation(s)
- Nikolaus Bresgen
- Department of Cell Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria.
| | - Peter M Eckl
- Department of Cell Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria.
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Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a rare syndrome of uncontrolled immune activation that has gained increasing attention during the last decade. The diagnosis of HLH is based on a constellation of clinical and laboratory abnormalities, including elevated serum ferritin levels. In the pediatric population, marked hyperferritinemia is specific for HLH. To determine what conditions are associated with profoundly elevated ferritin in the adult population, we performed a retrospective analysis in a large academic health care system. We identified 113 patients with serum ferritin levels higher than 50,000 µg/L. The most frequently observed conditions included renal failure, hepatocellular injury, infections, and hematologic malignancies. Our results suggest that marked hyperferritinemia can be seen in a variety of conditions and is not specific for HLH in adults.
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Galay RL, Umemiya-Shirafuji R, Mochizuki M, Fujisaki K, Tanaka T. Iron metabolism in hard ticks (Acari: Ixodidae): the antidote to their toxic diet. Parasitol Int 2014; 64:182-9. [PMID: 25527065 DOI: 10.1016/j.parint.2014.12.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 12/01/2014] [Accepted: 12/09/2014] [Indexed: 12/21/2022]
Abstract
Ticks are notorious parasitic arthropods, known for their completely host-blood-dependent lifestyle. Hard ticks (Acari: Ixodidae) feed on their hosts for several days and can ingest blood more than a hundred times their unfed weight. Their blood-feeding habit facilitates the transmission of various pathogens. It is remarkable how hard ticks cope with the toxic nature of their blood meal, which contains several molecules that can promote oxidative stress including iron. While it is required in several physiological processes, high amounts of iron can be dangerous because iron can also participate in the formation of free radicals that may cause cellular damage and death. Here we review the current knowledge on heme and inorganic iron metabolism in hard ticks and compare it with that in vertebrates and other arthropods. We briefly discuss the studies on heme transport, storage and detoxification, and the transport and storage of inorganic iron, with emphasis on the functions of tick ferritins. This review points out other aspects of tick iron metabolism that warrant further investigation, as compared to mammals and other arthropods. Further understanding of this physiological process may help in formulating new control strategies for tick infestation and the spread of tick-borne diseases.
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Affiliation(s)
- Remil Linggatong Galay
- Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi 753-8515, Japan; Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
| | - Rika Umemiya-Shirafuji
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Masami Mochizuki
- Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi 753-8515, Japan; Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
| | - Kozo Fujisaki
- National Agricultural and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Tetsuya Tanaka
- Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi 753-8515, Japan; Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan.
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Fisher TW, Vyas M, He R, Nelson W, Cicero JM, Willer M, Kim R, Kramer R, May GA, Crow JA, Soderlund CA, Gang DR, Brown JK. Comparison of potato and asian citrus psyllid adult and nymph transcriptomes identified vector transcripts with potential involvement in circulative, propagative liberibacter transmission. Pathogens 2014; 3:875-907. [PMID: 25436509 PMCID: PMC4282890 DOI: 10.3390/pathogens3040875] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 10/18/2014] [Accepted: 10/20/2014] [Indexed: 01/01/2023] Open
Abstract
The potato psyllid (PoP) Bactericera cockerelli (Sulc) and Asian citrus psyllid (ACP) Diaphorina citri Kuwayama are the insect vectors of the fastidious plant pathogen, Candidatus Liberibacter solanacearum (CLso) and Ca. L. asiaticus (CLas), respectively. CLso causes Zebra chip disease of potato and vein-greening in solanaceous species, whereas, CLas causes citrus greening disease. The reliance on insecticides for vector management to reduce pathogen transmission has increased interest in alternative approaches, including RNA interference to abate expression of genes essential for psyllid-mediated Ca. Liberibacter transmission. To identify genes with significantly altered expression at different life stages and conditions of CLso/CLas infection, cDNA libraries were constructed for CLso-infected and -uninfected PoP adults and nymphal instars. Illumina sequencing produced 199,081,451 reads that were assembled into 82,224 unique transcripts. PoP and the analogous transcripts from ACP adult and nymphs reported elsewhere were annotated, organized into functional gene groups using the Gene Ontology classification system, and analyzed for differential in silico expression. Expression profiles revealed vector life stage differences and differential gene expression associated with Liberibacter infection of the psyllid host, including invasion, immune system modulation, nutrition, and development.
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Affiliation(s)
- Tonja W Fisher
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA.
| | - Meenal Vyas
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA.
| | - Ruifeng He
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA.
| | | | - Joseph M Cicero
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA.
| | - Mark Willer
- BIO5, The University of Arizona, Tucson, AZ 85721, USA.
| | - Ryan Kim
- National Center for Genome Resources, 2935 Rodeo Park Drive East, Santa Fe, NM 87505, USA.
| | - Robin Kramer
- National Center for Genome Resources, 2935 Rodeo Park Drive East, Santa Fe, NM 87505, USA.
| | - Greg A May
- National Center for Genome Resources, 2935 Rodeo Park Drive East, Santa Fe, NM 87505, USA.
| | - John A Crow
- National Center for Genome Resources, 2935 Rodeo Park Drive East, Santa Fe, NM 87505, USA.
| | | | - David R Gang
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Judith K Brown
- School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA.
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Hong SM, Mon H, Lee JM, Kusakabe T. Characterization and recombinant protein expression of ferritin light chain homologue in the silkworm, Bombyx mori. INSECT SCIENCE 2014; 21:135-146. [PMID: 23956199 DOI: 10.1111/1744-7917.12031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/13/2013] [Indexed: 06/02/2023]
Abstract
The silkworm genome encodes three iron storage proteins or ferritins, Fer1HCH, Fer2LCH, and Fer3HCH. Probing our EST library constructed from 1-day-old silkworm eggs revealed only Fer2LCH mRNA, which encoded for a protein with a predicted putative N-glycosylation site. Developmental and tissue expression analyses during embryogenesis revealed that Fer2LCH mRNA was abundant from 6 h to 6 days after oviposition. Transcriptional expression of Fer2LCH during the postembryonic stage is also high in the larval fat body and mid-gut, and then is upregulated in all pupal tissues tested. We found that Fer2LCH mRNA contains an iron-responsive element, suggesting this ferritin subunit is subject to translational control. Although ferritin expression has been shown to increase following immune challenge in other insects, the levels of Fer2LCH mRNA were not significantly induced following viral or bacterial infection of Bombyx mori. Using a baculovirus expression system we expressed recombinant BmFer2LCH protein, which was detectable in the cytoplasmic fraction, likely in a compartment of the secretory pathway, and was shown to undergo posttranslational modifications including N-glycosylation. In particular, rBmFer2LCH carbohydrate chains were composed of mannose and GlcNAc. We suggest that Fer2LCH is important for iron homeostasis and maintaining normal organ function in silkworms.
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Affiliation(s)
- Sun Mee Hong
- Department of Research and Development, Gyeongbuk Institute for Marine Bioindustry (GIMB), Hujeong 688-3, Uljin, 767-813, Korea
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Sun Y, Zhang Y, Fu X, Zhang R, Zou J, Wang S, Hu X, Zhang L, Bao Z. Identification of two secreted ferritin subunits involved in immune defense of Yesso scallop Patinopecten yessoensis. FISH & SHELLFISH IMMUNOLOGY 2014; 37:53-59. [PMID: 24434645 DOI: 10.1016/j.fsi.2014.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/03/2014] [Accepted: 01/04/2014] [Indexed: 06/03/2023]
Abstract
As an important iron storage protein, ferritin plays a crucial role in the iron-withholding defense system. In this study, two secreted ferritin subunits (PyFerS1 and PyFerS2) were identified from the Yesso scallop, Patinopecten yessoensis. The complete DNA sequences of the two ferritins are 7101 and 5359 bp, consisting of seven and five exons, respectively. The full-length cDNAs of PyFerS1 and PyFerS2 are 960 and 956 bp in length, encoding 228 and 220 amino acids, respectively. They have typical ferritin structures, with four long α-helices, one short α-helix and an L-loop. Signal peptides were found at the N-terminus of both ferritins, and phylogenetic analysis showed that they both clustered with secreted mollusc ferritins. PyFerS1 possesses all seven conserved residues of the ferroxidase center, whereas PyFerS2 only has two. Real-time PCR analysis indicated high expression level of PyFerS2 in the D-shaped larvae, and PyFerS1 in both D-shaped larvae and fertilized eggs. In adult scallops, PyFerS1 was only detected in the hepatopancreas, whereas PyFerS2 was detected in both hepatopancreas and mantle. After the scallops were challenged by iron ion or bacteria Vibrio anguillarum, the expression of both PyFerS1 and PyFerS2 was significantly elevated, suggesting they may play a role in scallop innate immune defense. For the first time, secreted ferritins were cloned and comprehensively characterized in bivalve molluscs. It will assist in better understanding of the role of secreted ferritins in bivalve innate immunity.
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Affiliation(s)
- Yan Sun
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Yueyue Zhang
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Xiaoteng Fu
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Ru Zhang
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Jiajun Zou
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Shi Wang
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Xiaoli Hu
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Lingling Zhang
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Zhenmin Bao
- Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
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Krisanova N, Sivko R, Kasatkina L, Borуsov A, Borisova T. Excitotoxic potential of exogenous ferritin and apoferritin: Changes in ambient level of glutamate and synaptic vesicle acidification in brain nerve terminals. Mol Cell Neurosci 2014; 58:95-104. [DOI: 10.1016/j.mcn.2013.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 11/04/2013] [Accepted: 12/02/2013] [Indexed: 12/14/2022] Open
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Abstract
Ferritin L (FTL) and ferritin H (FTH) subunits are responsible for intracellular iron storage. Serum ferritin levels are not only dependant on body iron stores. Aims of the present study are to demonstrate nature, source, and major regulatory mediators of serum ferritin in an animal model of acute-phase (AP) response. Animals (rats, wild-type [WT] mice, and interleukin [IL]-6ko mice) were injected with turpentine oil (TO) intra-muscularity to induce a sterile abscess and sacrificed at different time points afterward. Rat hepatocytes were isolated for cell culture and, after reaching confluence, stimulated with major AP cytokines to induce AP conditions. We found a significantly increased expression of both ferritin subunits in liver at mRNA and protein levels during AP response. In the serum of both control and TO-injected rats, only FTL was detectable by Western blotting, whereas no increase in serum FTL was measured by Western blot or enzyme-linked immunosorbent assay. An increase in protein expression of FTL and FTH was observed in lysates of rat hepatocytes after treatment with IL-6, IL-1β, and tumor necrosis factor-α; however, only FTL was increasingly released into supernatant. In both TO-injected rats and WT mice, a dramatic increase in serum IL-6 levels was observed, along with an increased amount of hepatic ferritin subunits. However, an increase of hepatic FTL but not of FTH protein expression was observed in IL-6ko mice after TO injection. Our data demonstrate that FTL is the only rat serum ferritin whose release into circulation from the hepatocytes is increased by the effect of AP cytokines (e.g., IL-6). In contrast, FTH expression is intracellular in both under physiological and AP conditions.
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Naz N, Ahmad S, Cameron S, Moriconi F, Rave-Fränk M, Christiansen H, Hess CF, Ramadori G, Malik IA. Differential regulation of ferritin subunits and iron transport proteins: an effect of targeted hepatic X-irradiation. BIOMED RESEARCH INTERNATIONAL 2013; 2013:353106. [PMID: 24693535 PMCID: PMC3874337 DOI: 10.1155/2013/353106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 10/09/2013] [Indexed: 01/23/2023]
Abstract
The current study aimed to investigate radiation-induced regulation of iron proteins including ferritin subunits in rats. Rat livers were selectively irradiated in vivo at 25 Gy. This dose can be used to model radiation effects to the liver without inducing overt radiation-induced liver disease. Sham-irradiated rats served as controls. Isolated hepatocytes were irradiated at 8 Gy. Ferritin light polypeptide (FTL) was detectable in the serum of sham-irradiated rats with an increase after irradiation. Liver irradiation increased hepatic protein expression of both ferritin subunits. A rather early increase (3 h) was observed for hepatic TfR1 and Fpn-1 followed by a decrease at 12 h. The increase in TfR2 persisted over the observed time. Parallel to the elevation of AST levels, a significant increase (24 h) in hepatic iron content was measured. Complete blood count analysis showed a significant decrease in leukocyte number with an early increase in neutrophil granulocytes and a decrease in lymphocytes. In vitro, a significant increase in ferritin subunits at mRNA level was detected after irradiation which was further induced with a combination treatment of irradiation and acute phase cytokine. Irradiation can directly alter the expression of ferritin subunits and this response can be strongly influenced by radiation-induced proinflammatory cytokines. FTL can be used as a serum marker for early phase radiation-induced liver damage.
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Affiliation(s)
- Naila Naz
- Department of Gastroenterology and Endocrinology, University Medical Center, Georg-August University, Robert-Koch Straße 40, 37075 Göttingen, Germany
- Department of Radiation Therapy and Radiooncology, University Medical Center, Georg-August University, Robert-Koch-Straße 40, 37075 Göttingen, Germany
| | - Shakil Ahmad
- Department of Gastroenterology and Endocrinology, University Medical Center, Georg-August University, Robert-Koch Straße 40, 37075 Göttingen, Germany
| | - Silke Cameron
- Department of Gastroenterology and Endocrinology, University Medical Center, Georg-August University, Robert-Koch Straße 40, 37075 Göttingen, Germany
| | - Federico Moriconi
- Department of Gastroenterology and Endocrinology, University Medical Center, Georg-August University, Robert-Koch Straße 40, 37075 Göttingen, Germany
| | - Margret Rave-Fränk
- Department of Radiation Therapy and Radiooncology, University Medical Center, Georg-August University, Robert-Koch-Straße 40, 37075 Göttingen, Germany
| | - Hans Christiansen
- Department of Radiation Therapy and Radiooncology, University Medical Center, Georg-August University, Robert-Koch-Straße 40, 37075 Göttingen, Germany
- Department of Radiation Oncology, Medizinische Hochschule Hannover, Carl-Neuberg Straße, 30625 Hannover, Germany
| | - Clemens Friedrich Hess
- Department of Radiation Therapy and Radiooncology, University Medical Center, Georg-August University, Robert-Koch-Straße 40, 37075 Göttingen, Germany
| | - Giuliano Ramadori
- Department of Gastroenterology and Endocrinology, University Medical Center, Georg-August University, Robert-Koch Straße 40, 37075 Göttingen, Germany
| | - Ihtzaz A. Malik
- Department of Gastroenterology and Endocrinology, University Medical Center, Georg-August University, Robert-Koch Straße 40, 37075 Göttingen, Germany
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Abstract
The iron hormone hepcidin and its receptor and cellular iron exporter ferroportin control the major fluxes of iron into blood plasma: intestinal iron absorption, the delivery of recycled iron from macrophages, and the release of stored iron from hepatocytes. Because iron losses are comparatively very small, iron absorption and its regulation by hepcidin and ferroportin determine total body iron content. Hepcidin is in turn feedback-regulated by plasma iron concentration and iron stores, and negatively regulated by the activity of erythrocyte precursors, the dominant consumers of iron. Hepcidin and ferroportin also play a role in host defense and inflammation, and hepcidin synthesis is induced by inflammatory signals including interleukin-6 and activin B. This review summarizes and discusses recent progress in molecular characterization of systemic iron homeostasis and its disorders, and identifies areas for further investigation.
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Estrada JA, Contreras I, Pliego-Rivero FB, Otero GA. Molecular mechanisms of cognitive impairment in iron deficiency: alterations in brain-derived neurotrophic factor and insulin-like growth factor expression and function in the central nervous system. Nutr Neurosci 2013; 17:193-206. [PMID: 24074845 DOI: 10.1179/1476830513y.0000000084] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE The present review examines the relationship between iron deficiency and central nervous system (CNS) development and cognitive impairment, focusing on the cellular and molecular mechanisms related to the expression and function of growth factors, particularly the insulin-like growth factors I and II (IGF-I/II) and brain-derived neurotrophic factor (BDNF), in the CNS. METHODS Nutritional deficiencies are important determinants in human cognitive impairment. Among these, iron deficiency has the highest prevalence worldwide. Although this ailment is known to induce psychomotor deficits during development, the precise molecular and cellular mechanisms underlying these alterations have not been properly elucidated. This review summarizes the available information on the effect of iron deficiency on the expression and function of growth factors in the CNS, with an emphasis on IGF-I/II and BDNF. RESULTS AND DISCUSSION Recent studies have shown that specific growth factors, such as IGF-I/II and BDNF, have an essential role in cognition, particularly in processes involving learning and memory, by the activation of intracellular-signaling pathways involved in cell proliferation, differentiation, and survival. It is known that nutritional deficiencies promote reductions in systemic and CNS concentrations of growth factors, and that altered expression of these molecules and their receptors in the CNS leads to psychomotor and developmental deficits. Iron deficiency may induce these deficits by decreasing the expression and function of IGF-I/II and BDNF in specific areas of the brain.
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Moore C, Ormseth M, Fuchs H. Causes and significance of markedly elevated serum ferritin levels in an academic medical center. J Clin Rheumatol 2013; 19:324-8. [PMID: 23965472 DOI: 10.1097/rhu.0b013e31829ce01f] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE A markedly elevated serum ferritin level has been associated with inflammatory conditions such as adult-onset Still's disease, systemic juvenile idiopathic arthritis, and hemophagocytic lymphohistiocytosis/macrophage activation syndrome. Hyperferritinemia, however, can also be caused by a wide variety of disparate conditions, often with impressively high serum levels. The objective of this analysis was to investigate the underlying etiology of markedly elevated ferritin levels in a large group of patients treated as outpatients and inpatients in a tertiary-care medical center. METHODS Data of all adult patients from 2008 through 2010 with at least 1 serum ferritin level greater than 1000 μg/L were reviewed. If a patient had multiple qualifying levels, the highest one was used. For each case, the most likely cause of the elevated ferritin was assessed based on the available clinical data using a simple algorithmic approach. RESULTS Six hundred twenty-seven patients were found. The average serum ferritin level was 2647 μg/L. The most frequent condition was malignancy (153/627), with iron-overload syndromes the second most common (136/627). There were 6 cases of adult-onset Still's disease, systemic juvenile idiopathic arthritis, or hemophagocytic lymphohistiocytosis/macrophage activation syndrome. The average ferritin level in these syndromes was 14242 μg/L. Seven patients appeared to have anemia of chronic inflammation, and in 5 patients, there was no clearly definable cause for hyperferritinemia. CONCLUSIONS Although extremely elevated ferritin levels may be associated with rheumatologic diseases, more often they are found in patients with other conditions such as malignancy or infection. In addition, extremely high ferritin levels can be found in patients with seemingly indolent disease or levels of chronic inflammation.
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MESH Headings
- Academic Medical Centers
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Arthritis, Juvenile/blood
- Arthritis, Juvenile/complications
- Arthritis, Juvenile/ethnology
- Asian
- Black People
- Female
- Ferritins/blood
- Hispanic or Latino
- Humans
- Iron Overload/blood
- Iron Overload/complications
- Iron Overload/ethnology
- Lymphohistiocytosis, Hemophagocytic/blood
- Lymphohistiocytosis, Hemophagocytic/complications
- Lymphohistiocytosis, Hemophagocytic/ethnology
- Male
- Middle Aged
- Neoplasms/blood
- Neoplasms/complications
- Neoplasms/ethnology
- Retrospective Studies
- Still's Disease, Adult-Onset/blood
- Still's Disease, Adult-Onset/complications
- Still's Disease, Adult-Onset/ethnology
- Tennessee
- White People
- Young Adult
- Black or African American
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Affiliation(s)
- Charles Moore
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
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Mandilaras K, Pathmanathan T, Missirlis F. Iron absorption in Drosophila melanogaster. Nutrients 2013; 5:1622-47. [PMID: 23686013 PMCID: PMC3708341 DOI: 10.3390/nu5051622] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/03/2013] [Accepted: 05/07/2013] [Indexed: 12/20/2022] Open
Abstract
The way in which Drosophila melanogaster acquires iron from the diet remains poorly understood despite iron absorption being of vital significance for larval growth. To describe the process of organismal iron absorption, consideration needs to be given to cellular iron import, storage, export and how intestinal epithelial cells sense and respond to iron availability. Here we review studies on the Divalent Metal Transporter-1 homolog Malvolio (iron import), the recent discovery that Multicopper Oxidase-1 has ferroxidase activity (iron export) and the role of ferritin in the process of iron acquisition (iron storage). We also describe what is known about iron regulation in insect cells. We then draw upon knowledge from mammalian iron homeostasis to identify candidate genes in flies. Questions arise from the lack of conservation in Drosophila for key mammalian players, such as ferroportin, hepcidin and all the components of the hemochromatosis-related pathway. Drosophila and other insects also lack erythropoiesis. Thus, systemic iron regulation is likely to be conveyed by different signaling pathways and tissue requirements. The significance of regulating intestinal iron uptake is inferred from reports linking Drosophila developmental, immune, heat-shock and behavioral responses to iron sequestration.
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Affiliation(s)
- Konstantinos Mandilaras
- School of Biological and Chemical Sciences, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK; E-Mail:
| | - Tharse Pathmanathan
- Department of Physiology, Biophysics and Neuroscience, CINVESTAV-IPN, IPN Avenue 2508, Zacatenco, 07360, Mexico City, Mexico; E-Mail:
| | - Fanis Missirlis
- Department of Physiology, Biophysics and Neuroscience, CINVESTAV-IPN, IPN Avenue 2508, Zacatenco, 07360, Mexico City, Mexico; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +52-55-5747-3963; Fax: +52-55-5747-5713
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