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Li J, Xing X, Sun B, Zhao Y, Wu Z. Metallofullerenol Inhibits Cellular Iron Uptake by Inducing Transferrin Tetramerization. Chem Asian J 2017; 12:2646-2651. [PMID: 28815927 DOI: 10.1002/asia.201700910] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/16/2017] [Indexed: 12/24/2022]
Abstract
Herein, A549 tumor cell proliferation was confirmed to be positively dependent on the concentration of Fe3+ or transferrin (Tf). Gd@C82 (OH)22 or C60 (OH)22 effectively inhibited the iron uptake and the subsequent proliferation of A549 cells. The conformational changes of Tf mixed with FeCl3 , GdCl3 , C60 (OH)22 or Gd@C82 (OH)22 were obtained by SAXS. The results demonstrate that Tf homodimers can be decomposed into monomers in the presence of FeCl3 , GdCl3 or C60 (OH)22 , but associated into tetramers in the presence of Gd@C82 (OH)22 . The larger change of SAXS shapes between Tf+C60 (OH)22 and Tf+FeCl3 implies that C60 (OH)22 is bound to Tf, blocking the iron-binding site. The larger deviation of the SAXS shape from a possible crystal structure of Tf tetramer implies that Gd@C82 (OH)22 is bound to the Tf tetramer, thus disturbing iron transport. This study well explains the inhibition mechanism of Gd@C82 (OH)22 and C60 (OH)22 on the iron uptake and the proliferation of A549 tumor cells and highlights the specific interactions of a nanomedicine with the target biomolecules in cancer therapy.
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Affiliation(s)
- Jinxia Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Xueqing Xing
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Baoyun Sun
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Zhonghua Wu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
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Wang X, An P, Zeng J, Liu X, Wang B, Fang X, Wang F, Ren G, Min J. Serum ferritin in combination with prostate-specific antigen improves predictive accuracy for prostate cancer. Oncotarget 2017; 8:17862-17872. [PMID: 28160568 PMCID: PMC5392292 DOI: 10.18632/oncotarget.14977] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 01/24/2017] [Indexed: 01/10/2023] Open
Abstract
Ferritin is highly expressed in many cancer types. Although a few studies have reported an association between high serum ferritin levels and an increased risk of prostate cancer, the results are inconsistent. Therefore, we performed a large case-control study consisting of 2002 prostate cancer patients and 951 control patients with benign prostatic hyperplasia (BPH). We found that high ferritin levels were positively associated with increased serum prostate-specific antigen (PSA) levels and prostate cancer risk; each 100 ng/ml increase in serum ferritin increased the odds ratio (OR) by 1.20 (95% CI: 1.13−1.36). In the prostate cancer group, increased serum ferritin levels were significantly correlated with higher Gleason scores (p < 0.001). Notably, serum PSA values had even higher predictive accuracy among prostate cancer patients with serum ferritin levels > 400 ng/ml (Gleason score + total PSA correlation: r = 0.38; Gleason score + free PSA correlation: r = 0.49). Moreover, using immunohistochemistry, we found that prostate tissue ferritin levels were significantly higher (p < 0.001) in prostate cancer patients (n = 129) compared to BPH controls (n = 31). Prostate tissue ferritin levels were also highly correlated with serum ferritin when patients were classified by cancer severity (r = 0.81). Importantly, we found no correlation between serum ferritin levels and the inflammation marker C-reactive protein (CRP) in prostate cancer patients. In conclusion, serum ferritin is significantly associated with prostate cancer and may serve as a non-invasive biomarker to complement the PSA test in the diagnosis and prognostic evaluation of prostate cancer.
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Affiliation(s)
- Xijuan Wang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Peng An
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Jiling Zeng
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Xiaoyan Liu
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Bo Wang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Xuexian Fang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Fudi Wang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China.,Department of Nutrition, Precision Nutrition Innovation Center, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Guoping Ren
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Junxia Min
- The First Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
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Lee S, Eo W, Jeon H, Park S, Chae J. Prognostic Significance of Host-related Biomarkers for Survival in Patients with Advanced Non-Small Cell Lung Cancer. J Cancer 2017; 8:2974-2983. [PMID: 28928889 PMCID: PMC5604449 DOI: 10.7150/jca.20866] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 07/05/2017] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE This study identified host-related prognostic biomarkers for survival in patients with advanced non-small cell lung cancer (NSCLC). METHODS This study was based on the retrospective review of the medical records of 135 patients with pathologically confirmed advanced NSCLC. The host-related biomarkers assessed in this study that reflected patient condition included hemoglobin (Hb) levels; platelet (PLT), neutrophil, lymphocyte, and monocyte counts; and ferritin concentrations. The overall survival (OS) was calculated by Kaplan-Meier analysis and compared using log-rank tests. Univariate and multivariate analyses of Cox proportional hazards regression were used to evaluate the prognostic impact for survival. RESULTS Of the enrolled patients, 91.1% had stage IV NSCLC, 42.2% had ECOG-PS scores of 2, and 57% had undergone multiple rounds of prior systemic therapy. The prognostic factors included low Hb concentration (men: Hb < 13 g/dL, women: Hb < 12 g/dL; p = 0.046), increased neutrophil count (> 7,700 cells/μL; p < 0.001), decreased lymphocyte count (≤ 1500 cells/μL; p = 0.011), increased monocyte count (> 800 cells/μL; p < 0.001), and high ferritin level (men: > 200 ng/mL, women: > 150 ng/mL; p < 0.001), which were associated with poor OS and increased hazard of mortality. The multivariate proportional hazards model revealed that lymphocyte count, monocyte count, and ferritin level were independent host-related prognostic biomarkers for survival. Increased monocyte count (HR, 3.15; 95% CI, 1.64-6.04; p < 0.001) and high ferritin level (HR, 1.81; 95% CI, 1.24-2.64; p = 0.002) were significantly associated with poor survival, whereas increased lymphocyte count (HR, 0.57; 95% CI, 0.40-0.83; p = 0.004) showed prolonged survival. CONCLUSION Immune factors, such as lymphocyte and monocyte counts, as well as serum ferritin levels, are significant host-related prognostic biomarkers for survival with direct relevance to survival time in patients with advanced NSCLC.
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Affiliation(s)
- Sookyung Lee
- Depart of Clinical Oncology, College of Korean Medicine, Kyung Hee University
| | - Wankyu Eo
- Depart of Medical Oncology and Hematology, College of Medicine, Kyung Hee University
| | - Hyeonjin Jeon
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University
| | - Sora Park
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University
| | - Jean Chae
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University
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Aversa I, Zolea F, Ieranò C, Bulotta S, Trotta AM, Faniello MC, De Marco C, Malanga D, Biamonte F, Viglietto G, Cuda G, Scala S, Costanzo F. Epithelial-to-mesenchymal transition in FHC-silenced cells: the role of CXCR4/CXCL12 axis. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:104. [PMID: 28774348 PMCID: PMC5543736 DOI: 10.1186/s13046-017-0571-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 07/24/2017] [Indexed: 01/01/2023]
Abstract
Background Ferritin plays a central role in the intracellular iron metabolism; the molecule is a nanocage of 24 subunits of the heavy and light types. The heavy subunit (FHC) is provided of a ferroxidase activity and thus performs the key transformation of iron in a non-toxic form. Recently, it has been shown that FHC is also involved in additional not iron-related critical pathways including, among the others, p53 regulation, modulation of oncomiRNAs expression and chemokine signalling. Epithelial to mesenchymal transition (EMT) is a cellular mechanism by which the cell acquires a fibroblast-like phenotype along with a decreased adhesion and augmented motility. In this work we have focused our attention on the role of the FHC on EMT induction in the human cell lines MCF-7 and H460 to elucidate the underlying molecular mechanisms. Methods Targeted silencing of the FHC was performed by lentiviral-driven shRNA strategy. Reconstitution of the FHC gene product was obtained by full length FHC cDNA transfection with Lipofectamine 2000. MTT and cell count assays were used to evaluate cell viability and proliferation; cell migration capability was assayed by the wound-healing assay and transwell strategy. Quantification of the CXCR4 surface expression was performed by flow cytometry. Results Experimental data indicated that FHC-silenced MCF-7 and H460 cells (MCF-7shFHC, H460shFHC) acquire a mesenchymal phenotype, accompanied by a significant enhancement of their migratory and proliferative capacity. This shift is coupled to an increase in ROS production and by an activation of the CXCR4/CXCL12 signalling pathway. We present experimental data indicating that the cytosolic increase in ROS levels is responsible for the enhanced proliferation of FHC-silenced cells, while the higher migration rate is attributable to a dysregulation of the CXCR4/CXCL12 axis. Conclusions Our findings indicate that induction of EMT, increased migration and survival depend, in MCF-7 and H460 cells, on the release of FHC control on two pathways, namely the iron/ROS metabolism and CXCR4/CXCL12 axis. Besides constituting a further confirmation of the multifunctional nature of FHC, this data also suggest that the analysis of FHC amount/function might be an important additional tool to predict tumor aggressiveness.
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Affiliation(s)
- I Aversa
- Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy
| | - F Zolea
- Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy
| | - C Ieranò
- Genomica Funzionale, INT Pascale, Napoli, Italy
| | - S Bulotta
- Department of Health Sciences, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy
| | - A M Trotta
- Genomica Funzionale, INT Pascale, Napoli, Italy
| | - M C Faniello
- Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy
| | - C De Marco
- Department of Experimental and Clinical Medicine University of Catanzaro "Magna Graecia", 88100, Catanzaro, Italy
| | - D Malanga
- Department of Experimental and Clinical Medicine University of Catanzaro "Magna Graecia", 88100, Catanzaro, Italy
| | - F Biamonte
- Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy
| | - G Viglietto
- Department of Experimental and Clinical Medicine University of Catanzaro "Magna Graecia", 88100, Catanzaro, Italy
| | - G Cuda
- Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy.
| | - S Scala
- Genomica Funzionale, INT Pascale, Napoli, Italy
| | - F Costanzo
- Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100, Catanzaro, Italy
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Effects of Remote Ischemic Preconditioning on Heme Oxygenase-1 Expression and Cutaneous Wound Repair. Int J Mol Sci 2017; 18:ijms18020438. [PMID: 28218659 PMCID: PMC5343972 DOI: 10.3390/ijms18020438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/06/2017] [Accepted: 02/13/2017] [Indexed: 12/26/2022] Open
Abstract
Skin wounds may lead to scar formation and impaired functionality. Remote ischemic preconditioning (RIPC) can induce the anti-inflammatory enzyme heme oxygenase-1 (HO-1) and protect against tissue injury. We aim to improve cutaneous wound repair by RIPC treatment via induction of HO-1. RIPC was applied to HO-1-luc transgenic mice and HO-1 promoter activity and mRNA expression in skin and several other organs were determined in real-time. In parallel, RIPC was applied directly or 24h prior to excisional wounding in mice to investigate the early and late protective effects of RIPC on cutaneous wound repair, respectively. HO-1 promoter activity was significantly induced on the dorsal side and locally in the kidneys following RIPC treatment. Next, we investigated the origin of this RIPC-induced HO-1 promoter activity and demonstrated increased mRNA in the ligated muscle, heart and kidneys, but not in the skin. RIPC did not change HO-1 mRNA and protein levels in the wound 7 days after cutaneous injury. Both early and late RIPC did not accelerate wound closure nor affect collagen deposition. RIPC induces HO-1 expression in several organs, but not the skin, and did not improve excisional wound repair, suggesting that the skin is insensitive to RIPC-mediated protection.
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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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Lee S, Song A, Eo W. Serum Ferritin as a Prognostic Biomarker for Survival in Relapsed or Refractory Metastatic Colorectal Cancer. J Cancer 2016; 7:957-64. [PMID: 27313786 PMCID: PMC4910588 DOI: 10.7150/jca.14797] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 03/16/2016] [Indexed: 12/26/2022] Open
Abstract
Background: This study investigated the prognostic impact of serum ferritin for survival in patients with relapsed or refractory metastatic colorectal cancer (mCRC). Methods: This retrospective cohort study reviewed clinicopathological characteristics and laboratory biomarkers in 120 mCRC patients being treated with Korean Medicine (KM). The overall survival (OS) of patients was calculated using the Kaplan-Meier method, and statistical significance was assessed using the log-rank test. Univariate and multivariate analyses of Cox proportional hazards regression were used to evaluate the prognostic impact for survival in relapsed or refractory mCRC patients. Results: Of the patients, 62.5% had liver metastases, 74.1% underwent greater than second-line chemotherapy, and 80.8% underwent surgery. Median OS was 7.6 months for all patients after the initiation of KM treatment, which was begun 13.7 months, on average, after mCRC diagnosis. Concerning prognostic factors such as the presence of liver metastasis (p = 0.024), high carcinoembryonic antigen level (CEA > 5 ng/mL, p = 0.044), elevated C-reactive protein (CRP ≥ 10.0 mg/L, p = 0.000), high absolute monocyte count (AMC > 413.3 cells/μL, p = 0.034), elevated serum ferritin (ferritin ≥ 150 ng/mL, p = 0.002), low hemoglobin level (Hb < 12 g/dL, p = 0.026) and low albumin (albumin < 3.5 g/dL, p = 0.003) were associated with increased hazard ratios and poor survival. According to the multivariate proportional hazards model with backward and forward manners, albumin (albumin < 3.5 g/dL; hazard ratio (HR) 2.218, 95% confidence interval (CI) 1.135 - 3.990, p = 0.019), CRP (CRP ≥ 10.0 mg/L; HR 2.506, 95% CI 1.644 - 3.822, p = 0.000), CEA (CEA > 5 ng/mL; HR 2.040, 95% CI 1.203 - 3.460, p = 0.008), and serum ferritin (ferritin ≥ 150 ng/mL; HR 1.763, 95% CI 1.169 - 2.660, p = 0.007) were independent prognostic biomarkers of survival in mCRC patients. Conclusions: These results indicate that serum ferritin acts as an independent prognostic biomarker for survival in relapsed or refractory mCRC patients.
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Affiliation(s)
- Sookyung Lee
- 1. Department of Clinical Oncology, College of Korean Medicine, Kyung Hee University
| | - Anna Song
- 2. Department of Clinical Korean Medicine, Graduate School, Kyung Hee University
| | - Wankyu Eo
- 3. Department of Medical Oncology and Hematology, College of Medicine, Kyung Hee University
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Abstract
Ferritins, the main intracellular iron storage proteins, have been studied for over 60 years, mainly focusing on the mammalian ones. This allowed the elucidation of the structure of these proteins and the mechanisms regulating their iron incorporation and mineralization. However, ferritin is present in most, although not all, eukaryotic cells, comprising monocellular and multicellular invertebrates and vertebrates. The aim of this review is to provide an update on the general properties of ferritins that are common to various eukaryotic phyla (except plants), and to give an overview on the structure, function and regulation of ferritins. An update on the animal models that were used to characterize H, L and mitochondrial ferritins is also provided. The data show that ferritin structure is highly conserved among different phyla. It exerts an important cytoprotective function against oxidative damage and plays a role in innate immunity, where it also contributes to prevent parenchymal tissue from the cytotoxicity of pro-inflammatory agonists released by the activation of the immune response activation. Less clear are the properties of the secretory ferritins expressed by insects and molluscs, which may be important for understanding the role played by serum ferritin in mammals.
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Redox cycling metals: Pedaling their roles in metabolism and their use in the development of novel therapeutics. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:727-48. [PMID: 26844773 DOI: 10.1016/j.bbamcr.2016.01.026] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/29/2016] [Indexed: 12/12/2022]
Abstract
Essential metals, such as iron and copper, play a critical role in a plethora of cellular processes including cell growth and proliferation. However, concomitantly, excess of these metal ions in the body can have deleterious effects due to their ability to generate cytotoxic reactive oxygen species (ROS). Thus, the human body has evolved a very well-orchestrated metabolic system that keeps tight control on the levels of these metal ions. Considering their very high proliferation rate, cancer cells require a high abundance of these metals compared to their normal counterparts. Interestingly, new anti-cancer agents that take advantage of the sensitivity of cancer cells to metal sequestration and their susceptibility to ROS have been developed. These ligands can avidly bind metal ions to form redox active metal complexes, which lead to generation of cytotoxic ROS. Furthermore, these agents also act as potent metastasis suppressors due to their ability to up-regulate the metastasis suppressor gene, N-myc downstream regulated gene 1. This review discusses the importance of iron and copper in the metabolism and progression of cancer, how they can be exploited to target tumors and the clinical translation of novel anti-cancer chemotherapeutics.
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Kuruppu AI, Zhang L, Collins H, Turyanska L, Thomas NR, Bradshaw TD. An Apoferritin-based Drug Delivery System for the Tyrosine Kinase Inhibitor Gefitinib. Adv Healthc Mater 2015; 4:2816-21. [PMID: 26592186 DOI: 10.1002/adhm.201500389] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 08/21/2015] [Indexed: 12/24/2022]
Abstract
Anticancer drug Gefitinib encapsulated within human heavy chain apoferritin by diffusion allows pH-controlled sustained release of cargo. The combination of increased cellular uptake, and potent and enhanced antitumor activity against the HER2 overexpressing SKBR3 cell line compared to Gefitinib alone, makes it a promising carrier for delivery of drugs to tumor sites.
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Affiliation(s)
- Anchala I. Kuruppu
- Centre for Biomolecular Sciences; School of Pharmacy; The University of Nottingham; Nottingham NG7 2RD UK
| | - Lei Zhang
- Centre for Biomolecular Sciences; School of Chemistry; The University of Nottingham; Nottingham NG7 2RD UK
| | - Hilary Collins
- Centre for Biomolecular Sciences; School of Pharmacy; The University of Nottingham; Nottingham NG7 2RD UK
| | - Lyudmila Turyanska
- School of Physics and Astronomy; The University of Nottingham; Nottingham NG7 2RD UK
| | - Neil R. Thomas
- Centre for Biomolecular Sciences; School of Chemistry; The University of Nottingham; Nottingham NG7 2RD UK
| | - Tracey D. Bradshaw
- Centre for Biomolecular Sciences; School of Pharmacy; The University of Nottingham; Nottingham NG7 2RD UK
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Physiological implications of mammalian ferritin-binding proteins interacting with circulating ferritin and a new aspect of ferritin- and zinc-binding proteins. Biometals 2015; 29:15-24. [DOI: 10.1007/s10534-015-9897-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 11/20/2015] [Indexed: 12/21/2022]
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Becs G, Zarjou A, Agarwal A, Kovács KÉ, Becs Á, Nyitrai M, Balogh E, Bányai E, Eaton JW, Arosio P, Poli M, Jeney V, Balla J, Balla G. Pharmacological induction of ferritin prevents osteoblastic transformation of smooth muscle cells. J Cell Mol Med 2015; 20:217-30. [PMID: 26499096 PMCID: PMC4727553 DOI: 10.1111/jcmm.12682] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Accepted: 08/14/2015] [Indexed: 12/31/2022] Open
Abstract
Vascular calcification is a frequent complication of atherosclerosis, diabetes and chronic kidney disease. In the latter group of patients, calcification is commonly seen in tunica media where smooth muscle cells (SMC) undergo osteoblastic transformation. Risk factors such as elevated phosphorus levels and vitamin D3 analogues have been identified. In the light of earlier observations by our group and others, we sought to inhibit SMC calcification via induction of ferritin. Human aortic SMC were cultured using β-glycerophosphate with activated vitamin D3 , or inorganic phosphate with calcium, and induction of alkaline phosphatase (ALP) and osteocalcin as well as accumulation of calcium were used to monitor osteoblastic transformation. In addition, to examine the role of vitamin D3 analogues, plasma samples from patients on haemodialysis who had received calcitriol or paricalcitol were tested for their tendency to induce calcification of SMC. Addition of exogenous ferritin mitigates the transformation of SMC into osteoblast-like cells. Importantly, pharmacological induction of heavy chain ferritin by 3H-1,2-Dithiole-3-thione was able to inhibit the SMC transition into osteoblast-like cells and calcification of extracellular matrix. Plasma samples collected from patients after the administration of activated vitamin D3 caused significantly increased ALP activity in SMC compared to the samples drawn prior to activated vitamin D3 and here, again induction of ferritin diminished the osteoblastic transformation. Our data suggests that pharmacological induction of ferritin prevents osteoblastic transformation of SMC. Hence, utilization of such agents that will cause enhanced ferritin synthesis may have important clinical applications in prevention of vascular calcification.
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Affiliation(s)
- Gergely Becs
- Faculty of Medicine, Division of Nephrology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Abolfazl Zarjou
- Division of Nephrology, Department of Medicine, Nephrology Research and Training Center and Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Anupam Agarwal
- Division of Nephrology, Department of Medicine, Nephrology Research and Training Center and Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Katalin Éva Kovács
- Faculty of Medicine, Division of Nephrology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Ádám Becs
- Faculty of Medicine, Division of Nephrology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Mónika Nyitrai
- Faculty of Medicine, Division of Nephrology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Enikő Balogh
- Faculty of Medicine, Division of Neonatology, Department of Pediatrics, University of Debrecen, Debrecen, Hungary
| | - Emese Bányai
- Faculty of Medicine, Division of Neonatology, Department of Pediatrics, University of Debrecen, Debrecen, Hungary
| | - John W Eaton
- Molecular Targets Program, James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Paolo Arosio
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Maura Poli
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Viktória Jeney
- Faculty of Medicine, Division of Nephrology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary.,MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - József Balla
- Faculty of Medicine, Division of Nephrology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary.,MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - György Balla
- Faculty of Medicine, Division of Neonatology, Department of Pediatrics, University of Debrecen, Debrecen, Hungary
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Schonberg DL, Miller TE, Wu Q, Flavahan WA, Das NK, Hale JS, Hubert CG, Mack SC, Jarrar AM, Karl RT, Rosager AM, Nixon AM, Tesar PJ, Hamerlik P, Kristensen BW, Horbinski C, Connor JR, Fox PL, Lathia JD, Rich JN. Preferential Iron Trafficking Characterizes Glioblastoma Stem-like Cells. Cancer Cell 2015; 28:441-455. [PMID: 26461092 PMCID: PMC4646058 DOI: 10.1016/j.ccell.2015.09.002] [Citation(s) in RCA: 226] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 05/31/2015] [Accepted: 09/09/2015] [Indexed: 12/29/2022]
Abstract
Glioblastomas display hierarchies with self-renewing cancer stem-like cells (CSCs). RNA sequencing and enhancer mapping revealed regulatory programs unique to CSCs causing upregulation of the iron transporter transferrin, the top differentially expressed gene compared with tissue-specific progenitors. Direct interrogation of iron uptake demonstrated that CSCs potently extract iron from the microenvironment more effectively than other tumor cells. Systematic interrogation of iron flux determined that CSCs preferentially require transferrin receptor and ferritin, two core iron regulators, to propagate and form tumors in vivo. Depleting ferritin disrupted CSC mitotic progression, through the STAT3-FoxM1 regulatory axis, revealing an iron-regulated CSC pathway. Iron is a unique, primordial metal fundamental for earliest life forms, on which CSCs have an epigenetically programmed, targetable dependence.
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Affiliation(s)
- David L Schonberg
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Tyler E Miller
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Qiulian Wu
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - William A Flavahan
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Nupur K Das
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - James S Hale
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Christopher G Hubert
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Stephen C Mack
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Awad M Jarrar
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Robert T Karl
- Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Ann Mari Rosager
- Department of Clinical Pathology, Odense University Hospital, 5000 Odense, Denmark
| | - Anne M Nixon
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA 17033, USA
| | - Paul J Tesar
- Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Petra Hamerlik
- Brain Tumor Biology Group, Danish Cancer Society Research Center, 2100 Copenhagen, Denmark
| | - Bjarne W Kristensen
- Department of Clinical Pathology, Odense University Hospital, 5000 Odense, Denmark
| | - Craig Horbinski
- Division of Neuropathology, Department of Pathology, University of Kentucky, Lexington, KY 40536, USA
| | - James R Connor
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA 17033, USA
| | - Paul L Fox
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Justin D Lathia
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Jeremy N Rich
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH 44195, USA.
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Functional role of inorganic trace elements in angiogenesis—Part I: N, Fe, Se, P, Au, and Ca. Crit Rev Oncol Hematol 2015; 96:129-42. [DOI: 10.1016/j.critrevonc.2015.05.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 04/15/2015] [Accepted: 05/12/2015] [Indexed: 01/08/2023] Open
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Loboda A, Jozkowicz A, Dulak J. HO-1/CO system in tumor growth, angiogenesis and metabolism - Targeting HO-1 as an anti-tumor therapy. Vascul Pharmacol 2015; 74:11-22. [PMID: 26392237 DOI: 10.1016/j.vph.2015.09.004] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/02/2015] [Accepted: 09/16/2015] [Indexed: 02/08/2023]
Abstract
Heme oxygenase-1 (HO-1, hmox-1) catalyzes the rate-limiting step in the heme degradation processes. Out of three by-products of HO-1 activity, biliverdin, iron ions and carbon monoxide (CO), the latter was mostly shown to mediate many beneficial HO-1 effects, including protection against oxidative injury, regulation of apoptosis, modulation of inflammation as well as contribution to angiogenesis. Mounting evidence suggests that HO-1/CO systemmay be of special benefit in protection inmany pathological conditions, like atherosclerosis or myocardial infarction. By contrast, the augmented expression of HO-1 in tumor tissues may have detrimental effect as HO-1 accelerates the formation of tumor neovasculature and provides the selective advantage for tumor cells to overcome the increased oxidative stress during tumorigenesis and during treatment. The inhibition of HO-1 has been proposed as an anti-cancer therapy, however, because of non-specific effects of known HO-1 inhibitors, the discovery of ideal drug lowering HO-1 expression/activity is still an open question. Importantly, in several types of cancer HO-1/CO system exerts opposite activities, making the possible treatment more complicated. All together indicates the complex role for HO-1/CO in various in vitro and in vivo conditions.
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Affiliation(s)
- Agnieszka Loboda
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland; Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland.
| | - Alicja Jozkowicz
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Jozef Dulak
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland; Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland.
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66
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Hatcher HC, Tesfay L, Torti SV, Torti FM. Cytoprotective Effect of Ferritin H in Renal Ischemia Reperfusion Injury. PLoS One 2015; 10:e0138505. [PMID: 26379029 PMCID: PMC4574775 DOI: 10.1371/journal.pone.0138505] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 08/31/2015] [Indexed: 01/08/2023] Open
Abstract
Oxidative stress is a major contributor to kidney injury following ischemia reperfusion. Ferritin, a highly conserved iron-binding protein, is a key protein in the maintenance of cellular iron homeostasis and protection from oxidative stress. Ferritin mitigates oxidant stress by sequestering iron and preventing its participation in reactions that generate reactive oxygen species. Ferritin is composed of two subunit types, ferritin H and ferritin L. Using an in vivo model that enables conditional tissue-specific doxycycline-inducible expression of ferritin H in the mouse kidney, we tested the hypothesis that an increased level of H-rich ferritin is renoprotective in ischemic acute renal failure. Prior to induction of ischemia, doxycycline increased ferritin H in the kidneys of the transgenic mice nearly 6.5-fold. Following reperfusion for 24 hours, induction of neutrophil gelatinous-associated lipocalin (NGAL, a urine marker of renal dysfunction) was reduced in the ferritin H overexpressers compared to controls. Histopathologic examination following ischemia reperfusion revealed that ferritin H overexpression increased intact nuclei in renal tubules, reduced the frequency of tubular profiles with luminal cast materials, and reduced activated caspase-3 in the kidney. In addition, generation of 4-hydroxy 2-nonenal protein adducts, a measurement of oxidant stress, was decreased in ischemia-reperfused kidneys of ferritin H overexpressers. These studies demonstrate that ferritin H can inhibit apoptotic cell death, enhance tubular epithelial viability, and preserve renal function by limiting oxidative stress following ischemia reperfusion injury.
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Affiliation(s)
- Heather C. Hatcher
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Lia Tesfay
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Suzy V. Torti
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
- Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Frank M. Torti
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
- Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
- * E-mail:
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Fischer-Fodor E, Miklasova N, Berindan-Neagoe I, Saha B. Iron, inflammation and invasion of cancer cells. ACTA ACUST UNITED AC 2015; 88:272-7. [PMID: 26609256 PMCID: PMC4632882 DOI: 10.15386/cjmed-492] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 06/30/2015] [Indexed: 01/08/2023]
Abstract
Chronic inflammation is associated with the metastasis of tumor cells evolving from a benign tumor to disseminating cancer. Such a metastatic progression is fostered by the angiogenesis propelled by various mediators interacting at the site of tumor growth. Angiogenesis causes two major changes that are assisted by altered glycosylation and neo-antigen presentation by the cancer cells. The angiogenesis-promoted pathological changes include enhanced inflammation and degradation of tissue matrices releasing tumor cells from the site of its origin. The degraded tumor cells release the neo-antigens resulting from altered glycosylation. Presentation of neo-antigens to T cells escalates metastasis and inflammation. Inflammasome activation and inflammation in several infections are regulated by iron. Based on the discrete reports, we propose a link between iron, inflammation, angiogenesis and tumor growth. Knowing the link better may help us formulate a novel strategy for cancer immunotherapy.
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Affiliation(s)
- Eva Fischer-Fodor
- Research Department, Prof. Dr. I. Chiricuta Institute of Oncology, Cluj-Napoca, Romania ; Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | | | - Ioana Berindan-Neagoe
- Research Department, Prof. Dr. I. Chiricuta Institute of Oncology, Cluj-Napoca, Romania ; Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Bhaskar Saha
- Department of Pathogenesis and Cellular Response, National Centre for Cell Science, Ganeshkhind, Pune, India
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68
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Yamamoto N, Sato K, Hoshina T, Kojiro M, Kusuhara K. Utility of ferritin as a predictor of the patients with Kawasaki disease refractory to intravenous immunoglobulin therapy. Mod Rheumatol 2015; 25:898-902. [PMID: 25849851 DOI: 10.3109/14397595.2015.1038430] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVES The aim of this study is to investigate whether ferritin can be a useful marker for the prediction of the patients with Kawasaki disease (KD) refractory to initial intravenous immunoglobulin (IVIG) therapy. METHODS This retrospective study enrolled 85 patients with KD hospitalized at Kitakyushu General Hospital during 2010-2014. These patients were divided into IVIG responders (n = 57) and non-responders (n = 28). Serum ferritin levels and the scoring systems for the prediction of non-responsiveness to initial IVIG therapy were compared between these two groups. RESULTS Serum ferritin level was significantly elevated in non-responders (p = 0.010). The area under the receiver-operating characteristics curve was 0.674, and the sensitivity and specificity in more than 165 ng/ml of serum ferritin level were 70.4% and 63.2%, respectively. In two of the three prediction scoring systems, non-responders also showed significantly higher scores than responders, but many non-responders had low scores of these scoring systems. More than half of the patients with a low score of these scoring systems had high serum ferritin level (≥ 165 ng/ml). CONCLUSIONS Serum ferritin level might be a useful marker for the prediction of non-responsiveness to initial IVIG therapy and could be an important complementary marker to the prediction scoring systems.
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Affiliation(s)
- Noboru Yamamoto
- a Department of Pediatrics , Kitakyushu General Hospital , Kitakyushu , Japan.,b Department of Pediatrics , School of Medicine, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Kaoru Sato
- a Department of Pediatrics , Kitakyushu General Hospital , Kitakyushu , Japan
| | - Takayuki Hoshina
- b Department of Pediatrics , School of Medicine, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Masumi Kojiro
- a Department of Pediatrics , Kitakyushu General Hospital , Kitakyushu , Japan
| | - Koichi Kusuhara
- b Department of Pediatrics , School of Medicine, University of Occupational and Environmental Health , Kitakyushu , Japan
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69
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McNally AK, Anderson JM. Phenotypic expression in human monocyte-derived interleukin-4-induced foreign body giant cells and macrophages in vitro: dependence on material surface properties. J Biomed Mater Res A 2015; 103:1380-90. [PMID: 25045023 PMCID: PMC4297257 DOI: 10.1002/jbm.a.35280] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 07/03/2014] [Indexed: 12/22/2022]
Abstract
The effects of different material surfaces on phenotypic expression in macrophages and foreign body giant cells (FBGC) were addressed using our in vitro system of interleukin (IL)-4-induced macrophage fusion and FBGC formation. Arginine-glycine-aspartate (RGD)-, vitronectin (VN)-, and chitosan (CH)-adsorbed cell culture polystyrene, carboxylated (C, negatively charged) polystyrene, and unmodified (PS, non-cell culture treated) polystyrene were compared for their abilities to support monocyte/macrophage adhesion and IL-4-induced macrophage fusion. Pooled whole cell lysates from four different donors were evaluated by immunoblotting for expression of selected components in monocytes, macrophages, and FBGC. In addition to RGD and VN as previously shown, we find that CH supports macrophage adhesion and FBGC formation, whereas C or PS support macrophage adhesion but do not permit macrophage fusion under otherwise identical conditions of IL-4 stimulation. Likewise, components related to macrophage fusion (CD206, CD98, CD147, CD13) are strongly expressed on RGD-, VN-, and CH-adsorbed surfaces but are greatly diminished or not detected on C or PS. Importantly, material surfaces also influence the FBGC phenotype itself, as demonstrated by strong differences in patterns of expression of HLA-DR, B7-2, B7-H1, and toll-like receptor (TLR)-2 on RGD, VN, and CH despite morphologic similarities between FBGC on these surfaces. Likewise, we observe differences in the expression of B7-2, α2-macroglobulin, TLR-2, and fascin-1 between mononuclear macrophages on C and PS. Collectively, these findings reveal the extent to which material surface chemistry influences macrophage/FBGC phenotype beyond evident morphological similarities or differences and identify CH as an FBGC-supportive substrate.
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Affiliation(s)
- Amy K McNally
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio
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70
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H-ferritin-regulated microRNAs modulate gene expression in K562 cells. PLoS One 2015; 10:e0122105. [PMID: 25815883 PMCID: PMC4376865 DOI: 10.1371/journal.pone.0122105] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 02/17/2015] [Indexed: 01/13/2023] Open
Abstract
In a previous study, we showed that the silencing of the heavy subunit (FHC) offerritin, the central iron storage molecule in the cell, is accompanied by a modification in global gene expression. In this work, we explored whether different FHC amounts might modulate miRNA expression levels in K562 cells and studied the impact of miRNAs in gene expression profile modifications. To this aim, we performed a miRNA-mRNA integrative analysis in K562 silenced for FHC (K562shFHC) comparing it with K562 transduced with scrambled RNA (K562shRNA). Four miRNAs, namely hsa-let-7g, hsa-let-7f, hsa-let-7i and hsa-miR-125b, were significantly up-regulated in silenced cells. The remarkable down-regulation of these miRNAs, following FHC expression rescue, supports a specific relation between FHC silencing and miRNA-modulation. The integration of target predictions with miRNA and gene expression profiles led to the identification of a regulatory network which includes the miRNAs up-regulated by FHC silencing, as well as91 down-regulated putative target genes. These genes were further classified in 9 networks; the highest scoring network, “Cell Death and Survival, Hematological System Development and Function, Hematopoiesis”, is composed by 18 focus molecules including RAF1 and ERK1/2. We confirmed that, following FHC silencing, ERK1/2 phosphorylation is severely impaired and that RAF1 mRNA is significantly down-regulated. Taken all together, our data indicate that, in our experimental model, FHC silencing may affect RAF1/pERK1/2 levels through the modulation of a specific set of miRNAs and add new insights in to the relationship among iron homeostasis and miRNAs.
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71
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Selvam A, Buhimschi IA, Makin JD, Pattinson RC, Anderson R, Forsyth BW. Hyperferritinemia and markers of inflammation and oxidative stress in the cord blood of HIV-exposed, uninfected (HEU) infants. HIV Med 2015; 16:375-80. [PMID: 25721379 DOI: 10.1111/hiv.12214] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2014] [Indexed: 01/11/2023]
Abstract
OBJECTIVES The purpose of this study was to evaluate markers of iron status and inflammation/oxidative stress in maternal and cord blood (CB) of HIV-infected and HIV-uninfected women as potential mechanisms for poor outcomes among HIV-exposed, uninfected (HEU) infants. METHODS Maternal venous blood and CB specimens were obtained from 87 pregnant women (45 HIV-infected and 42 HIV-uninfected) enrolled at Kalafong Hospital, Pretoria, South Africa. Iron status [serum iron, ferritin and transferrin concentrations, transferrin saturation, soluble transferrin receptor (sTfR) concentration and the sTfR/log ferritin (sTfR/F) index], antenatal exposure to inflammation (CB C-reactive protein and interleukin-6 concentrations and haptoglobin switch-on status) and oxidative stress [total radical trapping ability of CB plasma (TRAP) and chronic oxidative stress (soluble receptor of advanced glycation end-products (sRAGE) concentration] were assessed in laboratory studies. RESULTS There were no differences between the HIV-infected and HIV-uninfected groups in maternal haematological and iron indices, except that HIV-infected mothers had decreased white blood cell counts (P = 0.048) and increased serum ferritin concentrations (P = 0.032). Ferritin levels were significantly higher in CB than in maternal blood (P < 0.001) in both groups and further elevated in the CB of HEU infants (P = 0.044). There was also an inverse relationship between CB sTfR/F index and sRAGE (r = -0.43; P = 0.003) in the HIV-infected but not in the HIV-uninfected group. CONCLUSIONS Our study showed for the first time that ferritin was significantly elevated in CB of HEU infants. The inverse relationship between sTfR/F index and sRAGE in CB suggests that chronic oxidative stress or RAGE axis activation in HIV-infected mothers may play a role in modulating ferritin levels.
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Affiliation(s)
- A Selvam
- Department of Emergency Medicine, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - I A Buhimschi
- Center for Perinatal Research, Nationwide Children's Hospital, Ohio State University, Columbus, OH, USA
| | - J D Makin
- Department of Obstetrics and Gynaecology, Kalafong Hospital, University of Pretoria, Pretoria, South Africa
| | - R C Pattinson
- Department of Obstetrics and Gynaecology, Kalafong Hospital, University of Pretoria, Pretoria, South Africa
| | - R Anderson
- Medical Research Council Unit for Inflammation and Immunity, Department of Immunology, University of Pretoria, Pretoria, South Africa
| | - B W Forsyth
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
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Alkhateeb A, Zubritsky L, Kinsman B, Leitzel K, Campbell-Baird C, Ali SM, Connor J, Lipton A. Elevation in multiple serum inflammatory biomarkers predicts survival of pancreatic cancer patients with inoperable disease. J Gastrointest Cancer 2015; 45:161-7. [PMID: 24446242 DOI: 10.1007/s12029-013-9564-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE Cancer-associated inflammation plays a driver role in pancreatic tumor development and progression. Moreover, recent studies have implicated the inflammatory tumor microenvironment in modulating therapy response and inducing resistance. The aim of this study is to investigate the prognostic and predictive value of the inflammatory biomarkers serum ferritin and C-reactive protein (CRP) in advanced pancreatic cancer patients. METHODS We measured pretreatment serum ferritin and CRP levels in 159 patients with inoperable pancreatic cancer participating in a phase III trial. RESULTS Serum ferritin and CRP levels were examined for correlations with overall survival using Kaplan-Meier analysis. When analyzed on a categorical basis, patients with higher ferritin (>median) or CRP (>25th percentile) had shorter overall survival. Moreover, the two biomarkers were not correlated suggesting independent mechanisms of production and release. However, when patients were evaluated by their ferritin and CRP levels, only patients with elevation in both inflammatory biomarkers showed a significant decrease in overall survival. CONCLUSIONS Serum ferritin and CRP are independent prognostic factors for shorter survival in patients with inoperable pancreatic tumors. Moreover, the evaluation of patients based on both biomarkers suggested that their prognostic value, although independent, reflected the broader state of cancer-associated inflammation. Thus, serum ferritin and CRP should be further explored as clinical biomarkers.
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Affiliation(s)
- A Alkhateeb
- Department of Neurosurgery, The Pennsylvania State University Hershey Medical Center, Hershey, PA, 17033, USA
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Huhn AJ, Parsonage D, Horita DA, Torti FM, Torti SV, Hollis T. The high-molecular-weight kininogen domain 5 is an intrinsically unstructured protein and its interaction with ferritin is metal mediated. Protein Sci 2014; 23:1013-22. [PMID: 24810540 DOI: 10.1002/pro.2486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 05/06/2014] [Accepted: 05/06/2014] [Indexed: 12/30/2022]
Abstract
High-molecular-weight kininogen domain 5 (HK5) is an angiogenic modulator that is capable of inhibiting endothelial cell proliferation, migration, adhesion, and tube formation. Ferritin can bind to a histidine-glycine-lysine-rich region within HK5 and block its antiangiogenic effects. However, the molecular intricacies of this interaction are not well understood. Analysis of the structure of HK5 using circular dichroism and nuclear magnetic resonance [(1) H, (15) N]-heteronuclear single quantum coherence determined that HK5 is an intrinsically unstructured protein, consistent with secondary structure predictions. Equilibrium binding studies using fluorescence anisotropy were used to study the interaction between ferritin and HK5. The interaction between the two proteins is mediated by metal ions such as Co(2+) , Cd(2+) , and Fe(2+) . This metal-mediated interaction works independently of the loaded ferrihydrite core of ferritin and is demonstrated to be a surface interaction. Ferritin H and L bind to HK5 with similar affinity in the presence of metals. The ferritin interaction with HK5 is the first biological function shown to occur on the surface of ferritin using its surface-bound metals.
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Affiliation(s)
- Annissa J Huhn
- Center for Structural Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina; Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Tawfik A, Gnana-Prakasam JP, Smith SB, Ganapathy V. Deletion of hemojuvelin, an iron-regulatory protein, in mice results in abnormal angiogenesis and vasculogenesis in retina along with reactive gliosis. Invest Ophthalmol Vis Sci 2014; 55:3616-25. [PMID: 24812553 DOI: 10.1167/iovs.13-13677] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
PURPOSE Loss-of-function mutations in hemojuvelin (HJV) cause juvenile hemochromatosis, an iron-overload disease. Deletion of Hjv in mice results in excessive iron accumulation and morphologic changes in the retina. Here, we studied the retinal vasculature in Hjv(-/-) mice. METHODS Age-matched wild-type and Hjv(-/-) mice were used for fluorescein angiography and preparation of retinal cryosections, flat-mounts, and trypsin-digested blood vessels. Retinal angiogenesis was monitored by immunofluorescent detection of isolectin-B4, endoglin, and VEGF. Retinal vasculogenesis was monitored by immunofluorescent detection of collagen IV. Reactive gliosis was assessed based on the expression of glial fibrillary acidic protein and vimentin and CD11b/c as markers for Müller cells and microglia. RESULTS Between 18 and 24 months of age, retinas of Hjv(-/-) mice displayed marked disruptions in angiogenesis and vasculogenesis. Blood vessels in Hjv(-/-) mice were tortuous and dilated, with a decrease in the tight-junction protein occludin. There was also evidence of neovascularization in Hjv(-/-) mice with blood vessels appearing in the vitreous, which were leaky. There was reactive gliosis in these mice involving both Müller cells and microglia. Such changes were not detected at 2 weeks of age. Even at the age of 4 months, retinas of Hjv(-/-) mice were almost normal with changes just beginning to appear. Thus, the vascular changes in Hjv(-/-) mouse retinas represent an age-dependent phenomenon. CONCLUSIONS Deletion of Hjv in mice leads to abnormal retinal angiogenesis/vasculogenesis, with proliferation of new, leaky blood vessels in the vitreous. These changes are accompanied with reactive gliosis involving Müller cells and microglia.
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Affiliation(s)
- Amany Tawfik
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States James & Jean Culver Vision Discovery Institute, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States
| | - Jaya P Gnana-Prakasam
- James & Jean Culver Vision Discovery Institute, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States
| | - Sylvia B Smith
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States James & Jean Culver Vision Discovery Institute, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States
| | - Vadivel Ganapathy
- James & Jean Culver Vision Discovery Institute, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, United States
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Abstract
SIGNIFICANCE In this review, the dual nature of both iron and reactive oxygen species (ROS) will be explored in normal and cancer cell metabolism. Although iron and ROS play important roles in cellular homeostasis, they may also contribute to carcinogenesis. On the other hand, many studies have indicated that abrogation of iron metabolism, elevation of ROS, or modification of redox regulatory mechanisms in cancer cells, should be considered as therapeutic approaches for cancer. RECENT ADVANCES Drugs that target different aspects of iron metabolism may be promising therapeutics for cancer. The ability of iron chelators to cause iron depletion and/or elevate ROS levels indicates that these types of compounds have more potential as antitumor medicines than originally expected. Other natural and synthetic compounds that target pathways involved in ROS homeostasis also have potential value alone or in combination with current chemotherapeutics. CRITICAL ISSUES Although ROS induction and iron depletion may be targets for cancer therapies, the optimal therapeutic strategies have yet to be identified. This review highlights some of the research that strives to identify such therapeutics. FUTURE DIRECTIONS More studies are needed to better understand the role of iron and ROS in carcinogenesis not only as cancer promoters, but also as cytotoxic agents to cancer cells and cancer stem cells (CSCs). Moreover, the structure-activity effects of iron chelators and other compounds that increase ROS and/or disrupt iron metabolism need to be further evaluated to assess the effectiveness and selectivity of these compounds against both cancer and CSCs.
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Affiliation(s)
- Laura M Bystrom
- 1 Department of Pediatrics-Hematology/Oncology, Weill Cornell Medical College , New York, New York
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76
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Guo L, Jiang F, Tang YT, Si MY, Jiao XY. The association of serum vascular endothelial growth factor and ferritin in diabetic microvascular disease. Diabetes Technol Ther 2014; 16:224-34. [PMID: 24279470 PMCID: PMC3952528 DOI: 10.1089/dia.2013.0181] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) is involved in the pathogenesis of diabetic microvascular disease. Most diabetes patients have higher serum levels of ferritin that may participate in diabetic vascular complications through high oxidative stress induced by iron. However, the mechanistic link between ferritin and VEGF is obscure. The study investigated the association of VEGF and ferritin in patients with diabetic microvascular disease. PATIENTS AND METHODS Sixty patients with type 2 diabetes mellitus (T2DM) and 26 healthy individuals were selected in this study. Serum ferritin, VEGF, hematological parameters, and clinical data were assessed in this cohort. The Spearman rank method was used to evaluate the associations among them. RESULTS Serum levels of VEGF and ferritin were significantly higher in diabetes patients compared with the controls; levels of both were elevated with development of the disease. There were positive correlations between VEGF and glucose levels and between VEGF and ferritin in diabetes groups, especially in patients with diabetic retinopathy. Positive correlations were also found between VEGF level and the parameters of age, hemoglobin, and albumin in patients with diabetes hypertension. CONCLUSIONS Our data suggest that high ferritin levels in T2DM are closely related to the development of diabetic vascular complications through interaction with VEGF.
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Affiliation(s)
- Li Guo
- Department of Hematology Laboratory, First Affiliated Hospital of Shantou University Medical College , Shantou, Guangdong, China
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77
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Strasser-Weippl K, Ludwig H. Ferritin as prognostic marker in multiple myeloma patients undergoing autologous transplantation. Leuk Lymphoma 2014; 55:2520-4. [PMID: 24512320 DOI: 10.3109/10428194.2014.891025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Serum ferritin reflects body iron stores, but this correlation is dissociated in inflammation. Ferritin has been shown to be prognostically relevant in breast cancer and in patients with hematologic malignancies undergoing autologous or allogeneic stem cell transplantation. In the present study, we evaluated the prognostic relevance of pretransplant ferritin levels in 137 patients with myeloma (median age: 56 years) subjected to autologous stem cell transplantation in our institution between 1994 and 2010. After completion of induction therapy, a minority of patients had increased β₂-microglobulin (β2M) (> 3.5 mg/L: 30.6%) or low albumin (≤ 3.5 g/dL: 6.8%). Median overall survival from transplantation was 83.9 months. Pretransplant ferritin level was an independent prognostic marker in multivariate analyses (including age and ferritin levels albumin) for progression-free and overall survival and retained prognostic significance in a stepwise backward regression. Iron-independent effects of ferritin in myeloma should be prospectively investigated in preclinical and clinical studies.
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Affiliation(s)
- Kathrin Strasser-Weippl
- Department of Medicine I, Center of Oncology, Hematology and Palliative Care , Wilhelminenspital, Vienna , Austria
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78
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Misaggi R, Di Sanzo M, Cosentino C, Bond HM, Scumaci D, Romeo F, Stellato C, Giurato G, Weisz A, Quaresima B, Barni T, Amato F, Viglietto G, Morrone G, Cuda G, Faniello MC, Costanzo F. Identification of H ferritin-dependent and independent genes in K562 differentiating cells by targeted gene silencing and expression profiling. Gene 2013; 535:327-35. [PMID: 24239552 DOI: 10.1016/j.gene.2013.10.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 10/11/2013] [Accepted: 10/30/2013] [Indexed: 01/01/2023]
Abstract
Ferritin is best known as the key molecule in intracellular iron storage, and is involved in several metabolic processes such as cell proliferation, differentiation and neoplastic transformation. We have recently demonstrated that the shRNA silencing of the ferritin heavy subunit (FHC) in a melanoma cell line is accompanied by a consistent modification of gene expression pattern leading to a reduced potential in terms of proliferation, invasiveness, and adhesion ability of the silenced cells. In this study we sought to define the repertoire of genes whose expression might be affected by FHC during the hemin-induced differentiation of the erythromyeloid cell line K562. To this aim, gene expression profiling was performed in four different sets of cells: i) wild type K562; ii) sh-RNA FHC-silenced K562; iii) hemin-treated wild-type K562; and iv) hemin-treated FHC-silenced K562. Statistical analysis of the gene expression data, performed by two-factor ANOVA, identified three distinct classes of transcripts: a) Class 1, including 657 mRNAs whose expression is modified exclusively during hemin-induced differentiation of K562 cells, independently from the FHC relative amounts; b) Class 2, containing a set of 70 mRNAs which are consistently modified by hemin and FHC-silencing; and c) Class 3, including 128 transcripts modified by FHC-silencing but not by hemin. Our data indicate that FHC may function as a modulator of gene expression during erythroid differentiation and add new findings to the knowledge of the complex gene network modulated during erythroid differentiation.
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Affiliation(s)
- Roberta Misaggi
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Maddalena Di Sanzo
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Carlo Cosentino
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Heather M Bond
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Domenica Scumaci
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Francesco Romeo
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Claudia Stellato
- Laboratory of Molecular Medicine and Genomics, Department of Medicine and Surgery, University of Salerno, via Allende, 84081 Baronissi, Salerno, Italy
| | - Giorgio Giurato
- Laboratory of Molecular Medicine and Genomics, Department of Medicine and Surgery, University of Salerno, via Allende, 84081 Baronissi, Salerno, Italy
| | - Alessandro Weisz
- Laboratory of Molecular Medicine and Genomics, Department of Medicine and Surgery, University of Salerno, via Allende, 84081 Baronissi, Salerno, Italy
| | - Barbara Quaresima
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Tullio Barni
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Francesco Amato
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Giuseppe Viglietto
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Giovanni Morrone
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Giovanni Cuda
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
| | - Maria Concetta Faniello
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy.
| | - Francesco Costanzo
- Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta Campus, Viale Europa, 88100 Catanzaro, Italy
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Zarjou A, Bolisetty S, Joseph R, Traylor A, Apostolov EO, Arosio P, Balla J, Verlander J, Darshan D, Kuhn LC, Agarwal A. Proximal tubule H-ferritin mediates iron trafficking in acute kidney injury. J Clin Invest 2013; 123:4423-34. [PMID: 24018561 DOI: 10.1172/jci67867] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 07/18/2013] [Indexed: 12/30/2022] Open
Abstract
Ferritin plays a central role in iron metabolism and is made of 24 subunits of 2 types: heavy chain and light chain. The ferritin heavy chain (FtH) has ferroxidase activity that is required for iron incorporation and limiting toxicity. The purpose of this study was to investigate the role of FtH in acute kidney injury (AKI) and renal iron handling by using proximal tubule-specific FtH-knockout mice (FtH(PT-/-) mice). FtH(PT-/-) mice had significant mortality, worse structural and functional renal injury, and increased levels of apoptosis in rhabdomyolysis and cisplatin-induced AKI, despite significantly higher expression of heme oxygenase-1, an antioxidant and cytoprotective enzyme. While expression of divalent metal transporter-1 was unaffected, expression of ferroportin (FPN) was significantly lower under both basal and rhabdomyolysis-induced AKI in FtH(PT-/-) mice. Apical localization of FPN was disrupted after AKI to a diffuse cytosolic and basolateral pattern. FtH, regardless of iron content and ferroxidase activity, induced FPN. Interestingly, urinary levels of the iron acceptor proteins neutrophil gelatinase-associated lipocalin, hemopexin, and transferrin were increased in FtH(PT-/-) mice after AKI. These results underscore the protective role of FtH and reveal the critical role of proximal tubule FtH in iron trafficking in AKI.
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80
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Lenarduzzi M, Hui ABY, Yue S, Ito E, Shi W, Williams J, Bruce J, Sakemura-Nakatsugawa N, Xu W, Schimmer A, Liu FF. Hemochromatosis enhances tumor progression via upregulation of intracellular iron in head and neck cancer. PLoS One 2013; 8:e74075. [PMID: 23991213 PMCID: PMC3753261 DOI: 10.1371/journal.pone.0074075] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 07/22/2013] [Indexed: 12/13/2022] Open
Abstract
Introduction Despite improvements in treatment strategies for head and neck squamous cell carcinoma (HNSCC), outcomes have not significantly improved; highlighting the importance of identifying novel therapeutic approaches to target this disease. To address this challenge, we proceeded to evaluate the role of iron in HNSCC. Experimental Design Expression levels of iron-related genes were evaluated in HNSCC cell lines using quantitative RT-PCR. Cellular phenotypic effects were assessed using viability (MTS), clonogenic survival, BrdU, and tumor formation assays. The prognostic significance of iron-related proteins was determined using immunohistochemistry. Results In a panel of HNSCC cell lines, hemochromatosis (HFE) was one of the most overexpressed genes involved in iron regulation. In vitro knockdown of HFE in HNSCC cell lines significantly decreased hepcidin (HAMP) expression and intracellular iron level. This in turn, resulted in a significant decrease in HNSCC cell viability, clonogenicity, DNA synthesis, and Wnt signalling. These cellular changes were reversed by re-introducing iron back into HNSCC cells after HFE knockdown, indicating that iron was mediating this phenotype. Concordantly, treating HNSCC cells with an iron chelator, ciclopirox olamine (CPX), significantly reduced viability and clonogenic survival. Finally, patients with high HFE expression experienced a reduced survival compared to patients with low HFE expression. Conclusions Our data identify HFE as potentially novel prognostic marker in HNSCC that promotes tumour progression via HAMP and elevated intracellular iron levels, leading to increased cellular proliferation and tumour formation. Hence, these findings suggest that iron chelators might have a therapeutic role in HNSCC management.
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Affiliation(s)
- Michelle Lenarduzzi
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Angela B. Y. Hui
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
| | - Shijun Yue
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
| | - Emma Ito
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
| | - Wei Shi
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
| | - Justin Williams
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
| | - Jeff Bruce
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | | | - Wei Xu
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Aaron Schimmer
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Fei-Fei Liu
- Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Radiation Medicine Program, University Health Network, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
- * E-mail:
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81
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Alkhateeb AA, Connor JR. The significance of ferritin in cancer: anti-oxidation, inflammation and tumorigenesis. Biochim Biophys Acta Rev Cancer 2013; 1836:245-54. [PMID: 23891969 DOI: 10.1016/j.bbcan.2013.07.002] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/09/2013] [Accepted: 07/18/2013] [Indexed: 12/16/2022]
Abstract
The iron storage protein ferritin has been continuously studied for over 70years and its function as the primary iron storage protein in cells is well established. Although the intracellular functions of ferritin are for the most part well-characterized, the significance of serum (extracellular) ferritin in human biology is poorly understood. Recently, several lines of evidence have demonstrated that ferritin is a multi-functional protein with possible roles in proliferation, angiogenesis, immunosuppression, and iron delivery. In the context of cancer, ferritin is detected at higher levels in the sera of many cancer patients, and the higher levels correlate with aggressive disease and poor clinical outcome. Furthermore, ferritin is highly expressed in tumor-associated macrophages which have been recently recognized as having critical roles in tumor progression and therapy resistance. These characteristics suggest ferritin could be an attractive target for cancer therapy because its down-regulation could disrupt the supportive tumor microenvironment, kill cancer cells, and increase sensitivity to chemotherapy. In this review, we provide an overview of the current knowledge on the function and regulation of ferritin. Moreover, we examine the literature on ferritin's contributions to tumor progression and therapy resistance, in addition to its therapeutic potential.
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Affiliation(s)
- Ahmed A Alkhateeb
- Department of Neurosurgery, The Pennsylvania State University Hershey Medical Center, Hershey, PA, USA
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82
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Abstract
Iron is an essential nutrient that facilitates cell proliferation and growth. However, iron also has the capacity to engage in redox cycling and free radical formation. Therefore, iron can contribute to both tumour initiation and tumour growth; recent work has also shown that iron has a role in the tumour microenvironment and in metastasis. Pathways of iron acquisition, efflux, storage and regulation are all perturbed in cancer, suggesting that reprogramming of iron metabolism is a central aspect of tumour cell survival. Signalling through hypoxia-inducible factor (HIF) and WNT pathways may contribute to altered iron metabolism in cancer. Targeting iron metabolic pathways may provide new tools for cancer prognosis and therapy.
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Affiliation(s)
- Suzy V Torti
- Departments of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, Farmington, Connecticut 06030, USA.
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83
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Merlot AM, Kalinowski DS, Richardson DR. Novel chelators for cancer treatment: where are we now? Antioxid Redox Signal 2013; 18:973-1006. [PMID: 22424293 DOI: 10.1089/ars.2012.4540] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
SIGNIFICANCE Under normal circumstances, cellular iron levels are tightly regulated due to the potential toxic effects of this metal ion. There is evidence that tumors possess altered iron homeostasis, which is mediated by the perturbed expression of iron-related proteins, for example, transferrin receptor 1, ferritin and ferroportin 1. The de-regulation of iron homeostasis in cancer cells reveals a particular vulnerability to iron-depletion using iron chelators. In this review, we examine the absorption of iron from the gut; its transport, metabolism, and homeostasis in mammals; and the molecular pathways involved. Additionally, evidence for alterations in iron processing in cancer are described along with the perturbations in other biologically important transition metal ions, for example, copper(II) and zinc(II). These changes can be therapeutically manipulated by the use of novel chelators that have recently been shown to be highly effective in terms of inhibiting tumor growth. RECENT ADVANCES Such chelators include those of the thiosemicarbazone class that were originally thought to target only ribonucleotide reductase, but are now known to have multiple effects, including the generation of cytotoxic radicals. CRITICAL ISSUES Several chelators have shown marked anti-tumor activity in vivo against a variety of solid tumors. An important aspect is the toxicology and the efficacy of these agents in clinical trials. FUTURE DIRECTIONS As part of the process of the clinical assessment of the new chelators, an extensive toxicological assessment in multiple animal models is essential for designing appropriate dosing protocols in humans.
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Affiliation(s)
- Angelica M Merlot
- Department of Pathology and Bosch Institute, University of Sydney, Sydney, Australia
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84
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Zacharski LR, DePalma RG, Shamayeva G, Chow BK. The statin-iron nexus: anti-inflammatory intervention for arterial disease prevention. Am J Public Health 2013; 103:e105-12. [PMID: 23409890 DOI: 10.2105/ajph.2012.301163] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVES We postulated the existence of a statin-iron nexus by which statins improve cardiovascular disease outcomes at least partially by countering proinflammatory effects of excess iron stores. METHODS Using data from a clinical trial of iron (ferritin) reduction in advanced peripheral arterial disease, the Iron and Atherosclerosis Study, we compared effects of ferritin levels versus high-density lipoprotein to low-density lipoprotein ratios (both were randomization variables) on clinical outcomes in participants receiving and not receiving statins. RESULTS Statins increased high-density lipoprotein to low-density lipoprotein ratios and reduced ferritin levels by noninteracting mechanisms. Improved clinical outcomes were associated with lower ferritin levels but not with improved lipid status. CONCLUSIONS There are commonalities between the clinical benefits of statins and the maintenance of physiologic iron levels. Iron reduction may be a safe and low-cost alternative to statins.
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Affiliation(s)
- Leo R Zacharski
- Research Service, Veterans Affairs Hospital, White River Junction, VT 05009, USA.
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85
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Ferritin stimulates breast cancer cells through an iron-independent mechanism and is localized within tumor-associated macrophages. Breast Cancer Res Treat 2013; 137:733-44. [PMID: 23306463 DOI: 10.1007/s10549-012-2405-x] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 12/29/2012] [Indexed: 10/27/2022]
Abstract
Tumor-associated macrophages play a critical role in breast tumor progression; however, it is still unclear what effector molecular mechanisms they employ to impact tumorigenesis. Ferritin is the primary intracellular iron storage protein and is also abundant in circulation. In breast cancer patients, ferritin is detected at higher levels in both serum and tumor lysates, and its increase correlates with poor clinical outcome. In this study, we comprehensively examined the distribution of ferritin in normal and malignant breast tissue at different stages in tumor development. Decreased ferritin expression in cancer cells but increased infiltration of ferritin-rich CD68-positive macrophages was observed with increased tumor histological grade. Interestingly, ferritin stained within the stroma surrounding tumors suggesting local release within the breast. In cell culture, macrophages, but not breast cancer cells, were capable of ferritin secretion, and this secretion was further increased in response to pro-inflammatory cytokines. We next examined the possible functional significance of extracellular ferritin in a breast cancer cell culture model. Ferritin stimulated the proliferation of the epithelial breast cancer cell lines MCF7 and T47D. Moreover, this proliferative effect was independent of the iron content of ferritin and did not increase intracellular iron levels in cancer cells indicating a novel iron-independent function for this protein. Together, these findings suggest that the release of ferritin by infiltrating macrophages in breast tumors may represent an inflammatory effector mechanism by which ferritin directly stimulates tumorigenesis.
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86
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Abstract
Despite many recent advances, breast cancer remains a clinical challenge. Current issues include improving prognostic evaluation and increasing therapeutic options for women whose tumors are refractory to current frontline therapies. Iron metabolism is frequently disrupted in breast cancer, and may offer an opportunity to address these challenges. Iron enhances breast tumor initiation, growth and metastases. Iron may contribute to breast tumor initiation by promoting redox cycling of estrogen metabolites. Up-regulation of iron import and down-regulation of iron export may enable breast cancer cells to acquire and retain excess iron. Alterations in iron metabolism in macrophages and other cells of the tumor microenvironment may also foster breast tumor growth. Expression of iron metabolic genes in breast tumors is predictive of breast cancer prognosis. Iron chelators and other strategies designed to limit iron may have therapeutic value in breast cancer. The dependence of breast cancer on iron presents rich opportunities for improved prognostic evaluation and therapeutic intervention.
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Affiliation(s)
- Suzy V. Torti
- Department of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, Farmington Connecticut, 06030
| | - Frank M. Torti
- Department of Internal Medicine, University of Connecticut Health Center, Farmington Connecticut, 06030
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87
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Alkhateeb AA, Leitzel K, Ali SM, Campbell-Baird C, Evans M, Fuchs EM, Köstler WJ, Lipton A, Connor J. Elevation in inflammatory serum biomarkers predicts response to trastuzumab-containing therapy. PLoS One 2012; 7:e51379. [PMID: 23300545 PMCID: PMC3530544 DOI: 10.1371/journal.pone.0051379] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 11/02/2012] [Indexed: 11/18/2022] Open
Abstract
Approximately half of all HER2/neu-overexpressing breast cancer patients do not respond to trastuzumab-containing therapy. Therefore, there remains an urgent and unmet clinical need for the development of predictive biomarkers for trastuzumab response. Recently, several lines of evidence have demonstrated that the inflammatory tumor microenvironment is a major contributor to therapy resistance in breast cancer. In order to explore the predictive value of inflammation in breast cancer patients, we measured the inflammatory biomarkers serum ferritin and C-reactive protein (CRP) in 66 patients immediately before undergoing trastuzumab-containing therapy and evaluated their progression-free and overall survival. The elevation in pre-treatment serum ferritin (>250 ng/ml) or CRP (>7.25 mg/l) was a significant predictor of reduced progression-free survival and shorter overall survival. When patients were stratified based on their serum ferritin and CRP levels, patients with elevation in both inflammatory biomarkers had a markedly poorer response to trastuzumab-containing therapy. Therefore, the elevation in inflammatory serum biomarkers may reflect a pathological state that decreases the clinical efficacy of this therapy. Anti-inflammatory drugs and life-style changes to decrease inflammation in cancer patients should be explored as possible strategies to sensitize patients to anti-cancer therapeutics.
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Affiliation(s)
- Ahmed A. Alkhateeb
- Department of Neurosurgery, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
| | - Kim Leitzel
- Division of Hematology-Medical Oncology, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
| | - Suhail M. Ali
- Division of Hematology-Medical Oncology, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
- Department of Medicine, Lebanon VA Medical Center, Lebanon, Pennsylvania, United States of America
| | - Cynthia Campbell-Baird
- Division of Hematology-Medical Oncology, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
| | - Matthew Evans
- Division of Hematology-Medical Oncology, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
| | - Eva-Maria Fuchs
- Department of Medicine, Medical University of Vienna, Vienna, Austria
| | | | - Allan Lipton
- Division of Hematology-Medical Oncology, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
| | - James Connor
- Department of Neurosurgery, The Pennsylvania State University Hershey Medical Center, Hershey, Pennsylvania, United States of America
- * E-mail:
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88
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Hasegawa S, Harada K, Morokoshi Y, Tsukamoto S, Furukawa T, Saga T. Growth retardation and hair loss in transgenic mice overexpressing human H-ferritin gene. Transgenic Res 2012; 22:651-8. [DOI: 10.1007/s11248-012-9669-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 10/20/2012] [Indexed: 10/27/2022]
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89
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Tang X, Zhou B. Ferritin is the key to dietary iron absorption and tissue iron detoxification in Drosophila melanogaster. FASEB J 2012; 27:288-98. [PMID: 23064556 DOI: 10.1096/fj.12-213595] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Mammalian ferritin is predominantly in the cytosol, with a minor portion found in plasma. In most insects, including Drosophila melanogaster, ferritin belongs to the secretory type. The functional role of secretory ferritin in iron homeostasis remains poorly understood in insects as well as in mammalians. Here we used Drosophila to dissect the involvement of ferritin in insect iron metabolism. Midgut-specific knockdown of ferritin resulted in iron accumulation in the gut but systemic iron deficiency (37% control), accompanied by retarded development and reduced survival (3% survival), and was rescued by dietary iron supplementation (50% survival) or exacerbated by iron depletion (0% survival). These results suggest an essential role of ferritin in removing iron from enterocytes across the basolateral membrane. Expression of wild-type ferritin in the midgut, especially in the iron cell region, could significantly rescue ferritin-null mutants (first-instar larvae rescued up to early adults), indicating iron deficiency as the major cause of early death for ferritin flies. In many nonintestinal tissues, tissue-specific ferritin knockdown also caused local iron accumulation (100% increase) and resulted in severe tissue damage, as evidenced by cell loss. Overall, our study demonstrated Drosophila ferritin is essential to two key aspects of iron homeostasis: dietary iron absorption and tissue iron detoxification.
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Affiliation(s)
- Xiaona Tang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
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90
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Regulation of ROS production and vascular function by carbon monoxide. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:794237. [PMID: 22928087 PMCID: PMC3425856 DOI: 10.1155/2012/794237] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 07/04/2012] [Indexed: 01/06/2023]
Abstract
Carbon monoxide (CO) is a gaseous molecule produced from heme by heme oxygenase (HO). CO interacts with reduced iron of heme-containing proteins, leading to its involvement in various cellular events via its production of mitochondrial reactive oxygen species (ROS). CO-mediated ROS production initiates intracellular signal events, which regulate the expression of adaptive genes implicated in oxidative stress and functions as signaling molecule for promoting vascular functions, including angiogenesis and mitochondrial biogenesis. Therefore, CO generated either by exogenous delivery or by HO activity can be fundamentally involved in regulating mitochondria-mediated redox cascades for adaptive gene expression and improving blood circulation (i.e., O2 delivery) via neovascularization, leading to the regulation of mitochondrial energy metabolism. This paper will highlight the biological effects of CO on ROS generation and cellular redox changes involved in mitochondrial metabolism and angiogenesis. Moreover, cellular mechanisms by which CO is exploited for disease prevention and therapeutic applications will also be discussed.
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91
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Tesfay L, Huhn AJ, Hatcher H, Torti FM, Torti SV. Ferritin blocks inhibitory effects of two-chain high molecular weight kininogen (HKa) on adhesion and survival signaling in endothelial cells. PLoS One 2012; 7:e40030. [PMID: 22768328 PMCID: PMC3388046 DOI: 10.1371/journal.pone.0040030] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 06/03/2012] [Indexed: 12/16/2022] Open
Abstract
Angiogenesis is tightly regulated through complex crosstalk between pro- and anti-angiogenic signals. High molecular weight kininogen (HK) is an endogenous protein that is proteolytically cleaved in plasma and on endothelial cell surfaces to HKa, an anti-angiogenic protein. Ferritin binds to HKa and blocks its anti-angiogenic activity. Here, we explore mechanisms underlying the cytoprotective effect of ferritin in endothelial cells exposed to HKa. We observe that ferritin promotes adhesion and survival of HKa-treated cells and restores key survival and adhesion signaling pathways mediated by Erk, Akt, FAK and paxillin. We further elucidate structural motifs of both HKa and ferritin that are required for effects on endothelial cells. We identify an histidine-glycine-lysine (HGK) -rich antiproliferative region within domain 5 of HK as the target of ferritin, and demonstrate that both ferritin subunits of the H and L type regulate HKa activity. We further demonstrate that ferritin reduces binding of HKa to endothelial cells and restores the association of uPAR with α5β1 integrin. We propose that ferritin blocks the anti-angiogenic activity of HKa by reducing binding of HKa to UPAR and interfering with anti-adhesive and anti-proliferative signaling of HKa.
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Affiliation(s)
- Lia Tesfay
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Annissa J. Huhn
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Heather Hatcher
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Frank M. Torti
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Suzy V. Torti
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- * E-mail:
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92
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Feng Q, Migas MC, Waheed A, Britton RS, Fleming RE. Ferritin upregulates hepatic expression of bone morphogenetic protein 6 and hepcidin in mice. Am J Physiol Gastrointest Liver Physiol 2012; 302:G1397-404. [PMID: 22517766 PMCID: PMC3378091 DOI: 10.1152/ajpgi.00020.2012] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepcidin is a hepatocellular hormone that inhibits the release of iron from certain cell populations, including enterocytes and reticuloendothelial cells. The regulation of hepcidin (HAMP) gene expression by iron status is mediated in part by the signaling molecule bone morphogenetic protein 6 (BMP6). We took advantage of the low iron status of juvenile mice to characterize the regulation of Bmp6 and Hamp1 expression by iron administered in three forms: 1) ferri-transferrin (Fe-Tf), 2) ferric ammonium citrate (FAC), and 3) liver ferritin. Each of these forms of iron enters cells by distinct mechanisms and chemical forms. Iron was parenterally administered to 10-day-old mice, and hepatic expression of Bmp6 and Hamp1 mRNAs was measured 6 h later. We observed that hepatic Bmp6 expression increased in response to ferritin but was unchanged by Fe-Tf or FAC. Hepatic Hamp1 expression likewise increased in response to ferritin and Fe-Tf but was decreased by FAC. Exogenous ferritin increased Bmp6 and Hamp1 expression in older mice as well. Removing iron from ferritin markedly decreased its effect on Bmp6 expression. Exogenously administered ferritin and the derived iron localized in the liver primarily to sinusoidal lining cells. Moreover, expression of Bmp6 mRNA in isolated adult rodent liver cells was much higher in sinusoidal lining cells than hepatocytes (endothelial >> stellate > Kupffer). We conclude that exogenous iron-containing ferritin upregulates hepatic Bmp6 expression, and we speculate that liver ferritin contributes to regulation of Bmp6 and, thus, Hamp1 genes.
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Affiliation(s)
- Qi Feng
- 1Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri;
| | - Mary C. Migas
- 1Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri;
| | - Abdul Waheed
- 3Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Robert S. Britton
- 2Department of Internal Medicine, Saint Louis University School of Medicine, St. Louis, Missouri; and
| | - Robert E. Fleming
- 1Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri; ,3Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, Missouri
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93
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Di Sanzo M, Gaspari M, Misaggi R, Romeo F, Falbo L, De Marco C, Agosti V, Quaresima B, Barni T, Viglietto G, Larsen MR, Cuda G, Costanzo F, Faniello MC. H Ferritin Gene Silencing in a Human Metastatic Melanoma Cell Line: A Proteomic Analysis. J Proteome Res 2011; 10:5444-53. [DOI: 10.1021/pr200705z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maddalena Di Sanzo
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Marco Gaspari
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Roberta Misaggi
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Francesco Romeo
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Lucia Falbo
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Carmela De Marco
- Laboratorio di Oncologia Molecolare, BioGem s.c. a r.l., Ariano Irpino (AV), Italy
| | - Valter Agosti
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Barbara Quaresima
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Tullio Barni
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Giuseppe Viglietto
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Martin Røssel Larsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Giovanni Cuda
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Francesco Costanzo
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
| | - Maria Concetta Faniello
- Dipartimento di Medicina Sperimentale e Clinica “G. Salvatore”, Università degli Studi di Catanzaro “Magna Græcia”, viale Europa, Campus Universitario, “S. Venuta” - 88100 Catanzaro, Italy
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Jézéquel P, Campion L, Spyratos F, Loussouarn D, Campone M, Guérin-Charbonnel C, Joalland MP, André J, Descotes F, Grenot C, Roy P, Carlioz A, Martin PM, Chassevent A, Jourdan ML, Ricolleau G. Validation of tumor-associated macrophage ferritin light chain as a prognostic biomarker in node-negative breast cancer tumors: A multicentric 2004 national PHRC study. Int J Cancer 2011; 131:426-37. [PMID: 21898387 DOI: 10.1002/ijc.26397] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 07/27/2011] [Indexed: 12/11/2022]
Abstract
Novel prognostic biomarkers are imperatively needed to help direct treatment decisions by typing subgroups of node-negative breast cancer patients. Large screening of different biological compartments, such as the proteome, by means of high throughput techniques may greatly help scientists to find such markers. The present retrospective multicentric study included 268 node-negative breast cancer patients. We used a proteomic approach of SELDI-TOF-MS screening to identify differentially expressed cytosolic proteins with prognostic impact. The screening cohort was composed of 198 patients. Seventy supplementary patients were included for validation. Immunohistochemistry (IHC) and immunoassay (IA) were run to confirm the prognostic role of the marker identified by SELDI-TOF-MS screening. IHC was also used to explore links between selected marker and epithelial-mesenchymal transition (EMT)-like, proliferation and macrophage markers. Ferritin light chain (FTL) was identified as an independent prognostic marker (HR = 1.30-95% CI: 1.10-1.50, p = 0.001). Validation step by means of IHC and IA confirmed the prognostic value of FTL level. CD68 IHC showed that FTL was stored in tumor-associated macrophages (TAM), which exhibit an M2-like phenotype. We report here, first, the validation of FTL as a breast tumor prognostic biomarker in node-negative patients, and second, the fact that FTL is stored in TAM.
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Affiliation(s)
- Pascal Jézéquel
- Département de Biologie Oncologique, Institut de Cancérologie de l'Ouest - René Gauducheau, Bd J Monod, Nantes - Saint Herblain Cedex, France.
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95
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Han J, Seaman WE, Di X, Wang W, Willingham M, Torti FM, Torti SV. Iron uptake mediated by binding of H-ferritin to the TIM-2 receptor in mouse cells. PLoS One 2011; 6:e23800. [PMID: 21886823 PMCID: PMC3158792 DOI: 10.1371/journal.pone.0023800] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Accepted: 07/25/2011] [Indexed: 11/22/2022] Open
Abstract
Ferritin binds specifically and saturably to a variety of cell types, and recently several ferritin receptors have been cloned. TIM-2 is a specific receptor for H ferritin (HFt) in the mouse. TIM-2 is a member of the T cell immunoglobulin and mucin domain containing (TIM) protein family and plays an important role in immunity. The expression of TIM-2 outside of the immune system indicates that this receptor may have broader roles. We tested whether ferritin binding to TIM-2 can serve as an iron delivery mechanism. TIM-2 was transfected into normal (TCMK-1) mouse kidney cells, where it was appropriately expressed on the cell surface. HFt was labeled with 55Fe and 55Fe-HFt was incubated with TIM-2 positive cells or controls. 55Fe-HFt uptake was observed only in TIM-2 positive cells. HFt uptake was also seen in A20 B cells, which express endogenous TIM-2. TIM-2 levels were not increased by iron chelation. Uptake of 55Fe-HFt was specific and temperature-dependent. HFt taken up by TIM-2 positive cells transited through the endosome and eventually entered a lysosomal compartment, distinguishing the HFt pathway from that of transferrin, the classical vehicle for cellular iron delivery. Iron delivered following binding of HFt to TIM-2 entered the cytosol and became metabolically available, resulting in increased levels of endogenous intracellular ferritin. We conclude that TIM-2 can function as an iron uptake pathway.
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Affiliation(s)
- Jian Han
- Department of Biology, North Carolina Agricultural and Technical State University, Greensboro, North Carolina, United States of America
| | - William E. Seaman
- Department of Medicine, University of California San Francisco, California, United States of America
- Veterans Affairs Medical Center, San Francisco, California, United States of America
| | - Xiumin Di
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Wei Wang
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Mark Willingham
- Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Frank M. Torti
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Suzy V. Torti
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
- * E-mail:
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96
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Synthetic and natural iron chelators: therapeutic potential and clinical use. Future Med Chem 2011; 1:1643-70. [PMID: 21425984 DOI: 10.4155/fmc.09.121] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Iron-chelation therapy has its origins in the treatment of iron-overload syndromes. For many years, the standard for this purpose has been deferoxamine. Recently, considerable progress has been made in identifying synthetic chelators with improved pharmacologic properties relative to deferoxamine. Most notable are deferasirox (Exjade(®)) and deferiprone (Ferriprox(®)), which are now available clinically. In addition to treatment of iron overload, there is an emerging role for iron chelators in the treatment of diseases characterized by oxidative stress, including cardiovascular disease, atherosclerosis, neurodegenerative diseases and cancer. While iron is not regarded as the underlying cause of these diseases, it does play an important role in disease progression, either through promotion of cellular growth and proliferation or through participation in redox reactions that catalyze the formation of reactive oxygen species and increase oxidative stress. Thus, iron chelators may be of therapeutic benefit in many of these conditions. Phytochemicals, many of which bind iron, may also owe some of their beneficial properties to iron chelation. This review will focus on the advances in iron-chelation therapy for the treatment of iron-overload disease and cancer, as well as neurodegenerative and chronic inflammatory diseases. Established and novel iron chelators will be discussed, as well as the emerging role of dietary plant polyphenols that effectively modulate iron biochemistry.
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97
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Jarkovska K, Kupcova Skalnikova H, Halada P, Hrabakova R, Moos J, Rezabek K, Gadher SJ, Kovarova H. Development of ovarian hyperstimulation syndrome: interrogation of key proteins and biological processes in human follicular fluid of women undergoing in vitro fertilization. Mol Hum Reprod 2011; 17:679-92. [PMID: 21697218 DOI: 10.1093/molehr/gar047] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic complication and potentially life-threatening condition resulting from excessive ovarian stimulation during assisted reproductive technologies. Our aim was to identify candidate proteins in follicular fluid (FF) using various proteomic approaches which may help to identify patients at risk of OHSS. We analysed the proteome alterations in FF from patients suffering from severe forms of OHSS (OHSS+) compared with a control group of women without or with only mild signs of OHSS (OHSS-). The 12 abundant proteins of FF were removed using an immunoaffinity system. Pools of remaining depleted proteins were applied to the two-dimensional (2D) electrophoresis and 2D liquid chromatography and proteins in differentially expressed protein spots/fractions were identified by mass spectrometry. Among a total of 19 candidate proteins differentially expressed (P< 0.05) between OHSS+ and OHSS- FF samples, three proteins, namely ceruloplasmin, complement C3 and kininogen-1, were found using both 2D techniques. Computer modelling highlighted the important role of kininogen-1 as an anchor for mediated interactions with other identified proteins including ferritin light chain and ceruloplasmin, hepatocyte growth factor-like protein, as well as complement C3 and gelsolin, thus linking various biological processes including inflammation and angiogenesis, iron transport and storage, blood coagulation, innate immunity, cell adhesion and actin filament polymerization. The delineation of such processes may allow the development of informed corrective therapeutic intervention in patients at risk of OHSS and a set of key proteins of the FF may be helpful as potential biomarkers for monitoring IVF therapy.
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Affiliation(s)
- Karla Jarkovska
- Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics AS CR, v.v.i., 277 21 Libechov, Czech Republic
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98
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Gnana-Prakasam JP, Ananth S, Prasad PD, Zhang M, Atherton SS, Martin PM, Smith SB, Ganapathy V. Expression and iron-dependent regulation of succinate receptor GPR91 in retinal pigment epithelium. Invest Ophthalmol Vis Sci 2011; 52:3751-8. [PMID: 21357408 DOI: 10.1167/iovs.10-6722] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
PURPOSE GPR91, a succinate receptor, is expressed in retinal ganglion cells and induces vascular endothelial growth factor (VEGF) expression. RPE also expresses VEGF, but whether this cell expresses GPR91 is not known. Excessive iron is also proangiogenic, and hemochromatosis is associated with iron overload. Therefore, we examined the expression and iron-dependent regulation of GPR91 in the RPE. METHODS GPR91 expression was examined by RT-PCR and immunohistochemistry. Hemochromatosis mice, cytomegalovirus (CMV) infection of retina, expression of CMV-US2 in RPE, and exposure of RPE to ferric ammonium citrate (FAC) were used to examine the iron-dependent regulation of GPR91 expression. VEGF expression was quantified by qPCR. Knockdown of GPR91 in ARPE-19 cells was achieved with shRNA. RESULTS GPR91 was expressed in RPE but only in the apical membrane. Retinal expression of GPR91 was higher in hemochromatosis (Hfe(-/-)) mice than in wild-type (WT) mice. Primary RPE cells from Hfe(-/-) mice had increased GPR91 expression compared with WT RPE cells. Iron accumulation in cells induced by CMV infection, expression of CMV-US2, or treatment with FAC increased GPR91 expression. VEGF expression in the Hfe(-/-) mouse retina was increased at ages younger than 18 months, but the expression was downregulated at older ages. The involvement of GPR91 in succinate-induced expression of VEGF in RPE cells was confirmed with GPR91-specific shRNA. CONCLUSIONS GPR91 is expressed in the RPE with specific localization to the apical membrane, indicating that succinate in the subretinal space serves as the GPR91 agonist. Excessive iron in the retina and RPE enhances GPR91 expression; however, VEGF expression does not always parallel GPR91 expression.
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Affiliation(s)
- Jaya P Gnana-Prakasam
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, Georgia 30912, USA
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Affiliation(s)
- L Mascitelli
- Comando Brigata Alpina Julia, Medical Service, 8 Via S. Agostino, Udine 33100, Italy.
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100
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Abstract
New insights into the roles of proteins that regulate cellular iron in cancer growth, angiogenesis, and metastasis have recently emerged. Discoveries of the roles of ferroportin, hepcidin, lipocalin 2, and members of the six transmembrane epithelial antigen of the prostate (STEAP) and iron regulatory protein (IRP) families in cancer have provided specificity and molecular definition to the role of iron homeostasis in cancer growth and metastasis. A number of studies directly support a role of these proteins in modifying bioavailable iron, whereas other studies suggest that at least some of their effects are independent of their role in iron biology.
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Affiliation(s)
- Suzy V Torti
- Department of Biochemistry, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
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