1
|
Erinmez M, Zer Y. Effects of deferoxamine on intrinsic colistin resistance of Proteus mirabilis. Exp Ther Med 2023; 26:459. [PMID: 37614438 PMCID: PMC10443054 DOI: 10.3892/etm.2023.12158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 07/20/2023] [Indexed: 08/25/2023] Open
Abstract
Proteus mirabilis is a common pathogen, which is responsible for urinary tract infections. Iron is a critical element necessary for both humans and pathogens to maintain their biological functions, and iron limitation via chelator agents may be useful in the treatment of infections. The present study aimed to investigate the synergistic interactions between the iron chelator agent deferoxamine (DFO) and the antibacterial drug colistin. The minimum inhibitory concentration (MIC) values of DFO and colistin for P. mirabilis isolates were determined by broth microdilution. The checkerboard technique was used to examine the potential synergy between DFO and colistin. Furthermore, time-kill assays were used for the confirmation of synergy detected by the checkerboard assay, as well as for determining bacteriostatic and bactericidal interactions throughout a 24-h period. As expected, all P. mirabilis isolates were resistant to colistin. DFO did not inhibit P. mirabilis growth when used alone, even at very high doses (10 µg ml-1). Notably, when in combination with DFO, the MIC values of colistin were markedly reduced, and the checkerboard assay results showed synergy between colistin and DFO for all isolates. In addition, in time-kill assays, colistin + DFO exhibited synergistic activity against all strains at most time intervals and concentrations tested. Colistin + DFO showed bactericidal activity at colistin concentrations of 1xMIC and 2xMIC, although a degree of re-growth was observed in one of the strains at 12-24 h. These findings indicated that DFO has the potential for use as an adjunct to colistin through iron sequestration, thus providing synergistic activity to an antibiotic that would not normally be considered a treatment option against P. mirabilis. In vivo experiments in the future may provide useful information on the efficacy of DFO/colistin since these models effectively reflect physiological parameters.
Collapse
Affiliation(s)
- Mehmet Erinmez
- Department of Medical Microbiology, Gaziantep University School of Medicine, 27310 Gaziantep, Turkey
| | - Yasemin Zer
- Department of Medical Microbiology, Gaziantep University School of Medicine, 27310 Gaziantep, Turkey
| |
Collapse
|
2
|
Gao M, Zhao T, Zhang C, Li P, Wang J, Han J, Zhang N, Pang B, Liu S. Ferritinophagy-mediated iron competition in RUTIs: Tug-of-war between UPEC and host. Biomed Pharmacother 2023; 163:114859. [PMID: 37167722 DOI: 10.1016/j.biopha.2023.114859] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/24/2023] [Accepted: 05/06/2023] [Indexed: 05/13/2023] Open
Abstract
Uropathogenic Escherichia coli (UPEC) is the main pathogen of recurrent urinary tract infections (RUTIs). Urinary tract infection is a complicated interaction between UPEC and the host. During infection, UPEC can evade the host's immune response and retain in bladder epithelial cells, which requires adequate nutritional support. Iron is the first necessary trace element in life and a key nutritional factor, making it an important part of the competition between UPEC and the host. On the one hand, UPEC grabs iron to satisfy its reproduction, on the other hand, the host relies on iron to build nutritional immunity defenses against UPEC. Ferritinophagy is a selective autophagy of ferritin mediated by nuclear receptor coactivator 4, which is not only a way for the host to regulate iron metabolism to maintain iron homeostasis, but also a key point of competition between the host and UPEC. Although recent studies have confirmed the role of ferritinophagy in the progression of many diseases, the mechanism of potential interactions between ferritinophagy in UPEC and the host is poorly understood. In this paper, we reviewed the potential mechanisms of ferritinophagy-mediated iron competition in the UPEC-host interactions. This competitive relationship, like a tug-of-war, is a confrontation between the capability of UPEC to capture iron and the host's nutritional immunity defense, which could be the trigger for RUTIs. Therefore, understanding ferritinophagy-mediated iron competition may provide new strategies for exploring effective antibiotic alternative therapies to prevent and treat RUTIs.
Collapse
Affiliation(s)
- Mengqi Gao
- Department of Nephrology and Endocrinology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China
| | - Tingting Zhao
- Department of Nephrology, Beijing Key Laboratory for Immune-Mediated Inflammatory 9 Diseases, China-Japan Friendship Hospital, Beijing 100029, China
| | - Chuanlong Zhang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Ping Li
- Department of Nephrology, Beijing Key Laboratory for Immune-Mediated Inflammatory 9 Diseases, China-Japan Friendship Hospital, Beijing 100029, China
| | - Jiazhe Wang
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jiatong Han
- Department of Nephrology and Endocrinology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China
| | - Ning Zhang
- Department of Nephrology and Endocrinology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China
| | - Bo Pang
- International Medical Department of Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China.
| | - Shiwei Liu
- Department of Nephrology and Endocrinology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China.
| |
Collapse
|
3
|
Computational Modeling of Macrophage Iron Sequestration during Host Defense against Aspergillus. mSphere 2022; 7:e0007422. [PMID: 35862797 PMCID: PMC9429928 DOI: 10.1128/msphere.00074-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Iron is essential to the virulence of Aspergillus species, and restricting iron availability is a critical mechanism of antimicrobial host defense. Macrophages recruited to the site of infection are at the crux of this process, employing multiple intersecting mechanisms to orchestrate iron sequestration from pathogens. To gain an integrated understanding of how this is achieved in aspergillosis, we generated a transcriptomic time series of the response of human monocyte-derived macrophages to Aspergillus and used this and the available literature to construct a mechanistic computational model of iron handling of macrophages during this infection. We found an overwhelming macrophage response beginning 2 to 4 h after exposure to the fungus, which included upregulated transcription of iron import proteins transferrin receptor-1, divalent metal transporter-1, and ZIP family transporters, and downregulated transcription of the iron exporter ferroportin. The computational model, based on a discrete dynamical systems framework, consisted of 21 3-state nodes, and was validated with additional experimental data that were not used in model generation. The model accurately captures the steady state and the trajectories of most of the quantitatively measured nodes. In the experimental data, we surprisingly found that transferrin receptor-1 upregulation preceded the induction of inflammatory cytokines, a feature that deviated from model predictions. Model simulations suggested that direct induction of transferrin receptor-1 (TfR1) after fungal recognition, independent of the iron regulatory protein-labile iron pool (IRP-LIP) system, explains this finding. We anticipate that this model will contribute to a quantitative understanding of iron regulation as a fundamental host defense mechanism during aspergillosis. IMPORTANCE Invasive pulmonary aspergillosis is a major cause of death among immunosuppressed individuals despite the best available therapy. Depriving the pathogen of iron is an essential component of host defense in this infection, but the mechanisms by which the host achieves this are complex. To understand how recruited macrophages mediate iron deprivation during the infection, we developed and validated a mechanistic computational model that integrates the available information in the field. The insights provided by this approach can help in designing iron modulation therapies as anti-fungal treatments.
Collapse
|
4
|
Gawne P, Man F, Blower PJ, T. M. de Rosales R. Direct Cell Radiolabeling for in Vivo Cell Tracking with PET and SPECT Imaging. Chem Rev 2022; 122:10266-10318. [PMID: 35549242 PMCID: PMC9185691 DOI: 10.1021/acs.chemrev.1c00767] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Indexed: 02/07/2023]
Abstract
The arrival of cell-based therapies is a revolution in medicine. However, its safe clinical application in a rational manner depends on reliable, clinically applicable methods for determining the fate and trafficking of therapeutic cells in vivo using medical imaging techniques─known as in vivo cell tracking. Radionuclide imaging using single photon emission computed tomography (SPECT) or positron emission tomography (PET) has several advantages over other imaging modalities for cell tracking because of its high sensitivity (requiring low amounts of probe per cell for imaging) and whole-body quantitative imaging capability using clinically available scanners. For cell tracking with radionuclides, ex vivo direct cell radiolabeling, that is, radiolabeling cells before their administration, is the simplest and most robust method, allowing labeling of any cell type without the need for genetic modification. This Review covers the development and application of direct cell radiolabeling probes utilizing a variety of chemical approaches: organic and inorganic/coordination (radio)chemistry, nanomaterials, and biochemistry. We describe the key early developments and the most recent advances in the field, identifying advantages and disadvantages of the different approaches and informing future development and choice of methods for clinical and preclinical application.
Collapse
Affiliation(s)
- Peter
J. Gawne
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
| | - Francis Man
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
- Institute
of Pharmaceutical Science, School of Cancer
and Pharmaceutical Sciences, King’s College London, London, SE1 9NH, U.K.
| | - Philip J. Blower
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
| | - Rafael T. M. de Rosales
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
| |
Collapse
|
5
|
Khedr NF, Talkan OFA. New insights into arsenic, lead, and iron neurotoxicity: Activation of MAPK signaling pathway and oxidative stress. J Biochem Mol Toxicol 2022; 36:e23040. [DOI: 10.1002/jbt.23040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 01/27/2022] [Accepted: 03/02/2022] [Indexed: 01/14/2023]
Affiliation(s)
- Naglaa F. Khedr
- Department of Biochemistry, Faculty of Pharmacy Tanta University Tanta Egypt
| | - Ola F. A. Talkan
- Chemistry Department, Animal Health Research Institute‐Shiben El‐Kom Lab. Agriculture Research Center Menofia Shiben El‐Kom Egypt
| |
Collapse
|
6
|
Geiser DL, Li W, Pham DQD, Wysocki VH, Winzerling JJ. Shotgun and TMT-Labeled Proteomic Analysis of the Ovarian Proteins of an Insect Vector, Aedes aegypti (Diptera: Culicidae). JOURNAL OF INSECT SCIENCE (ONLINE) 2022; 22:7. [PMID: 35303100 PMCID: PMC8932505 DOI: 10.1093/jisesa/ieac018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Indexed: 06/14/2023]
Abstract
Aedes aegypti [Linnaeus in Hasselquist; yellow fever mosquito] transmits several viruses that infect millions of people each year, including Zika, dengue, yellow fever, chikungunya, and West Nile. Pathogen transmission occurs during blood feeding. Only the females blood feed as they require a bloodmeal for oogenesis; in the bloodmeal, holo-transferrin and hemoglobin provide the females with a high iron load. We are interested in the effects of the bloodmeal on the expression of iron-associated proteins in oogenesis. Previous data showed that following digestion of a bloodmeal, ovarian iron concentrations doubles by 72 hr. We have used shotgun proteomics to identify proteins expressed in Ae. aegypti ovaries at two oogenesis developmental stages following blood feeding, and tandem mass tag-labeling proteomics to quantify proteins expressed at one stage following feeding of a controlled iron diet. Our findings provide the first report of mosquito ovarian protein expression in early and late oogenesis. We identify proteins differentially expressed in the two oogenesis development stages. We establish that metal-associated proteins play an important role in Ae. aegypti oogenesis and we identify new candidate proteins that might be involved in mosquito iron metabolism. Finally, this work identified a unique second ferritin light chain subunit, the first reported in any species. The shotgun proteomic data are available via ProteomeXchange with identifier PXD005893, while the tandem mass tag-labeled proteomic data are available with identifier PXD028242.
Collapse
Affiliation(s)
- Dawn L Geiser
- Nutritional Sciences, Division of Agriculture, Life and Veterinary Sciences, University of Arizona, Tucson, AZ 85721, USA
| | - Wenzhou Li
- Department of Chemistry and Biochemistry, College of Science, University of Arizona, Tucson, AZ 85721, USA
- Present Address: Amgen Incorporation, One Amgen Center Drive, Thousand Oaks, CA 91320, USA
| | - Daphne Q-D Pham
- Department of Biological Sciences, University of Wisconsin-Parkside, Kenosha, WI 53141, USA
| | - Vicki H Wysocki
- Department of Chemistry and Biochemistry, College of Science, University of Arizona, Tucson, AZ 85721, USA
- Present Address: Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Joy J Winzerling
- Nutritional Sciences, Division of Agriculture, Life and Veterinary Sciences, University of Arizona, Tucson, AZ 85721, USA
| |
Collapse
|
7
|
Lin H, Zhou Y, Wang J, Wang H, Yao T, Chen H, Zheng H, Zhang Y, Ren E, Jiang L, Chu C, Chen X, Mao J, Wang F, Liu G. Repurposing ICG enables MR/PA imaging signal amplification and iron depletion for iron-overload disorders. SCIENCE ADVANCES 2021; 7:eabl5862. [PMID: 34919434 PMCID: PMC8682994 DOI: 10.1126/sciadv.abl5862] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Precise and noninvasive theranostic methods to quantify and deplete focal iron are of crucial importance for iron-overload disorders. Here, we developed an indocyanine green (ICG)–based imaging platform to reveal Fe3+ in vitro and in vivo. The high sensitivity and specificity of ICG-Fe interaction facilitated MR images with a marked correlation between T1 signal intensity ratio (T1SIR) changes and Fe3+ concentration in rodent models and humans. On the basis of these findings, a rational design for coordination-driven self-assembly ICG-Lecithin (ICG/Leci) was proposed to determine Fe3+. The enhancement of photoacoustic signal at 890 nm with increasing Fe3+ concentration showed an over 600% higher linear slope than that of T1SIR changes in animal models. ICG/Leci also promoted a 100% increase in iron depletion in the liver compared with deferoxamine. The high MR sensitivity and superior photoacoustic contrast, combined with enhanced iron depletion, demonstrate that ICG/Leci is a promising theranostic agent for simultaneous detection and treatment of iron-overload disorders.
Collapse
Affiliation(s)
- Huirong Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Yu Zhou
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Jiaming Wang
- The Fourth Affiliated Hospital, School of Public Health, Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Huimeng Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Tianhong Yao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Hu Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Huili Zheng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Yang Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - En Ren
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Lai Jiang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Chengchao Chu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
- Amoy Hopeful Biotechnology Co. Ltd., Xiamen 361027, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, Singapore
| | - Jingsong Mao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
- Department of Radiology, Xiang’an Hospital of Xiamen University, Xiamen 361102, China
- Corresponding author. (G.L.); (F.W.); (J.M.)
| | - Fudi Wang
- The Fourth Affiliated Hospital, School of Public Health, Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
- Corresponding author. (G.L.); (F.W.); (J.M.)
| | - Gang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
- Corresponding author. (G.L.); (F.W.); (J.M.)
| |
Collapse
|
8
|
Kang DY, Sp N, Jo ES, Lee JM, Jang KJ. New Insights into the Pivotal Role of Iron/Heme Metabolism in TLR4/NF-κB Signaling-Mediated Inflammatory Responses in Human Monocytes. Cells 2021; 10:cells10102549. [PMID: 34685529 PMCID: PMC8534183 DOI: 10.3390/cells10102549] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 02/04/2023] Open
Abstract
Iron metabolism and heme biosynthesis are essential processes in cells during the energy cycle. Alteration in these processes could create an inflammatory condition, which results in tumorigenesis. Studies are conducted on the exact role of iron/heme metabolism in induced inflammatory conditions. This study used lipopolysaccharide (LPS)- or high-glucose-induced inflammation conditions in THP-1 cells to study how iron/heme metabolism participates in inflammatory responses. Here, we used iron and heme assays for measuring total iron and heme. We also used flow cytometry and Western blotting to analyze molecular responses. Our results demonstrated that adding LPS or high-glucose induced iron formation and heme synthesis and elevated the expression levels of proteins responsible for iron metabolism and heme synthesis. We then found that further addition of heme or 5-aminolevulinic acid (ALA) increased heme biosynthesis and promoted inflammatory responses by upregulating TLR4/NF-κB and inflammatory cytokine expressions. We also demonstrated the inhibition of heme synthesis using succinylacetone (SA). Moreover, N-MMP inhibited LPS- or high-glucose-induced inflammatory responses by inhibiting TLR4/NF-κB signaling. Hence, iron/heme metabolism checkpoints could be considered a target for treating inflammatory conditions.
Collapse
Affiliation(s)
- Dong Young Kang
- Department of Pathology, Institute of Biomedical Science and Technology, School of Medicine, Konkuk University, Chungju 27478, Korea; (D.Y.K.); (N.S.)
| | - Nipin Sp
- Department of Pathology, Institute of Biomedical Science and Technology, School of Medicine, Konkuk University, Chungju 27478, Korea; (D.Y.K.); (N.S.)
| | - Eun Seong Jo
- Pharmacological Research Division, National Institute of Food and Drug Safety Evaluation, Osong Health Technology Administration Complex, Cheongju-si 28159, Korea; (E.S.J.); (J.-M.L.)
| | - Jin-Moo Lee
- Pharmacological Research Division, National Institute of Food and Drug Safety Evaluation, Osong Health Technology Administration Complex, Cheongju-si 28159, Korea; (E.S.J.); (J.-M.L.)
| | - Kyoung-Jin Jang
- Department of Pathology, Institute of Biomedical Science and Technology, School of Medicine, Konkuk University, Chungju 27478, Korea; (D.Y.K.); (N.S.)
- Correspondence: ; Tel.: +82-2-2030-7839
| |
Collapse
|
9
|
Delivery systems for improving iron uptake in anemia. Int J Pharm 2021; 601:120590. [PMID: 33845149 DOI: 10.1016/j.ijpharm.2021.120590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/30/2021] [Accepted: 04/05/2021] [Indexed: 01/01/2023]
Abstract
Anemia poses a threat to a broad population globally as depleted hemoglobin leads to a plethora of conditions, and the most common cause includes iron deficiency. Iron is an essential element important for erythropoiesis, DNA synthesis, protection of the immune system, energy production, and cognitive function and hence should be maintained at appropriate levels. Various proteins are involved in transporting and absorption of iron, activation of heme synthesis, and RBC production that could be possible targets to improve iron delivery. Oral supplementation of iron either from dietary or synthetic sources has been the frontline therapy for treating iron deficiency in anemia. At the same time, intravenous administration is provided in chronic anemia, such as chronic kidney diseases (CKD). This review focuses on the strategies developed to overcome the disadvantages of available iron therapies and increase iron absorption and uptake in the body to restore iron content. Nanotechnology combined with the food fortification processes gained attention as they help develop new delivery systems to improve iron uptake by enterocytes. Furthermore, naturally obtained products such as polysaccharides, peptides, proteins, and new synthetic molecules have been used in fabrication of iron-carrier systems. The establishment of transdermal iron delivery systems such as microneedle arrays or iontophoresis, or the discovery of new molecules also proved to be an effective way for delivering iron in patients non-compliant to oral therapy.
Collapse
|
10
|
Lombardo M, Espósito BP, Lourenço FR, Kaneko TM. The application of pharmaceutical quality by design concepts to evaluate the antioxidant and antimicrobial properties of a preservative system including desferrioxamine. Daru 2020; 28:635-646. [PMID: 32856238 PMCID: PMC7704847 DOI: 10.1007/s40199-020-00370-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 08/21/2020] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND The purpose of the present study was to investigate the antioxidant and antimicrobial activities of a conventional preservative system containing desferrioxamine mesylate (DFO) and optimize the composition of the system through mathematical models. METHODS Different combinations of ethylenediaminetetraacetic acid (EDTA), sodium metabisulfite (SM), DFO and methylparaben (MP) were prepared using factorial design of experiments. The systems were added to ascorbic acid (AA) solution and the AA content over time, at room temperature and at 40 °C was determined by volumetric assay. The systems were also evaluated for antioxidant activity by a fluorescence-based assay. Antimicrobial activity was assessed by microdilution technique and photometric detection against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans and Aspergillus brasiliensis. A multi-criteria decision approach was adopted to optimize all responses by desirability functions. RESULTS DFO did not extend the stability of AA over time, but displayed a better ability than EDTA to block the pro-oxidant activity of iron. DFO had a positive interaction with MP in microbial growth inhibition. The mathematical models showed adequate capacity to predict the responses. Statistical optimization aiming to meet the quality specifications of the ascorbic acid solution indicated that the presence of DFO in the composition allows to decrease the concentrations of EDTA, SM and MP. CONCLUSION DFO was much more effective than EDTA in preventing iron-catalyzed oxidation. In addition, DFO improved the inhibitory response of most microorganisms tested. The Quality by Design concepts aided in predicting an optimized preservative system with reduced levels of conventional antioxidants and preservatives, suggesting DFO as a candidate for multifunctional excipient.
Collapse
Affiliation(s)
- Márcia Lombardo
- Department of Pharmacy, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
- Center of Drugs, Cosmetics and Sanitizing Products, Adolfo Lutz Institute, São Paulo, Brazil.
| | - Breno Pannia Espósito
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Felipe Rebello Lourenço
- Department of Pharmacy, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Telma Mary Kaneko
- Department of Pharmacy, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
11
|
Ścibior A, Hus I, Mańko J, Jawniak D. Evaluation of the level of selected iron-related proteins/receptors in the liver of rats during separate/combined vanadium and magnesium administration. J Trace Elem Med Biol 2020; 61:126550. [PMID: 32464446 DOI: 10.1016/j.jtemb.2020.126550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 04/17/2020] [Accepted: 05/08/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND The current knowledge about the effects of vanadium (V) on iron (Fe)-related proteins and Fe homeostasis (which is regulated at the systemic, organelle, and cellular levels) is still insufficient. OBJECTIVE This fact and our earlier results prompted us to conduct studies with the aim to explain the mechanism of anemia accompanied by a rise in hepatic and splenic Fe deposition in rats receiving sodium metavanadate (SMV) separately and in combination with magnesium sulfate (MS). RESULTS We demonstrated for the first time that SMV (0.125 mg V/mL) administered to rats individually and in conjunction with MS (0.06 mg Mg/mL) for 12 weeks did not cause significant differences in the hepatic hepcidin (Hepc) and hemojuvelin (HJV) concentrations, compared to the control. In comparison with the control, there were no significant changes in the concentration of transferrin receptor 1 (TfR1) in the liver of rats treated with SMV and MS alone (in both cases only a downward trend of 14% and 15% was observed). However, a significant reduction in the hepatic TfR1 level was found in rats receiving SMV and MS simultaneously. In turn, the concentration of transferrin receptor 2 (TfR2) showed an increasing trend in the liver of rats treated with SMV and/or MS. CONCLUSIONS The experimental data suggest that the pathomechanism of the SMV-induced anemia is not associated with the effect of V on the concentration of Hepc in the liver, as confirmed by the unaltered hepatic HJV and TfR1 levels. Therefore, further studies are needed in order to check whether anemia that developed in the rats at the SMV administration (a) results from the inhibitory effect of V on erythropoietin (EPO) production, (b) is related to the effect of V on the induction of matriptase-2 (TMPRSS6) expression, or (c) is associated with the influence of this metal on haem synthesis.
Collapse
Affiliation(s)
- Agnieszka Ścibior
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Poland.
| | - Iwona Hus
- Institute of Hematology and Transfusion Medicine, Warsaw, Poland.
| | - Joanna Mańko
- Clinic of Haematooncology and Bone Marrow Transplantation, Medical University, Lublin, Poland.
| | - Dariusz Jawniak
- Clinic of Haematooncology and Bone Marrow Transplantation, Medical University, Lublin, Poland.
| |
Collapse
|
12
|
Gholami YH, Yuan H, Wilks MQ, Maschmeyer R, Normandin MD, Josephson L, El Fakhri G, Kuncic Z. A Radio-Nano-Platform for T1/T2 Dual-Mode PET-MR Imaging. Int J Nanomedicine 2020; 15:1253-1266. [PMID: 32161456 PMCID: PMC7049573 DOI: 10.2147/ijn.s241971] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 02/09/2020] [Indexed: 01/13/2023] Open
Abstract
Purpose This study aimed to develop a chelate-free radiolabeled nanoparticle platform for simultaneous positron emission tomography (PET) and magnetic resonance (MR) imaging that provides contrast-enhanced diagnostic imaging and significant image quality gain by integrating the high spatial resolution of MR with the high sensitivity of PET. Methods A commercially available super-paramagnetic iron oxide nanoparticle (SPION) (Feraheme®, FH) was labeled with the [89Zr]Zr using a novel chelate-free radiolabeling technique, heat-induced radiolabeling (HIR). Radiochemical yield (RCY) and purity (RCP) were measured using size exclusion chromatography (SEC) and radio-thin layer chromatography (radio-TLC). Characterization of the non-radioactive isotope 90Zr-labeled FH was performed by transmission electron microscopy (TEM). Simultaneous PET-MR phantom imaging was performed with different 89Zr-FH concentrations. The MR quantitative image analysis determined the contrast-enhancing properties of FH. The signal-to-noise ratio (SNR) and full-width half-maximum (FWHM) of the line spread function (LSF) were calculated before and after co-registering the PET and MR image data. Results High RCY (92%) and RCP (98%) of the [89Zr]Zr-FH product was achieved. TEM analysis confirmed the 90Zr atoms adsorption onto the SPION surface (≈ 10% average radial increase). Simultaneous PET-MR scans confirmed the capability of the [89Zr]Zr-FH nano-platform for this multi-modal imaging technique. Relative contrast image analysis showed that [89Zr]Zr-FH can act as a dual-mode T1/T2 contrast agent. For co-registered PET-MR images, higher spatial resolution (FWHM enhancement ≈ 3) and SNR (enhancement ≈ 8) was achieved at a clinical dose of radio-isotope and Fe. Conclusion Our results demonstrate FH is a highly suitable SPION-based platform for chelate-free labeling of PET tracers for hybrid PET-MR. The high RCY and RCP confirmed the robustness of the chelate-free HIR technique. An overall image quality gain was achieved compared to PET- or MR-alone imaging with a relatively low dosage of [89Zr]Zr-FH. Additionally, FH is suitable as a dual-mode T1/T2 MR image contrast agent. ![]()
Point your SmartPhone at the code above. If you have a QR code reader the video abstract will appear. Or use: http://youtu.be/Me_QBfX7I3s
Collapse
Affiliation(s)
- Yaser Hadi Gholami
- Faculty of Science, School of Physics, The University of Sydney, Sydney, NSW, Australia.,Sydney Vital Translational Cancer Research Centre, St Leonards, NSW, Australia.,Bill Walsh Translational Cancer Research Laboratory, The Kolling Institute, Northern Sydney Local Health District, Sydney, NSW, Australia
| | - Hushan Yuan
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Moses Q Wilks
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Richard Maschmeyer
- Faculty of Science, School of Physics, The University of Sydney, Sydney, NSW, Australia
| | - Marc D Normandin
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Lee Josephson
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Georges El Fakhri
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Zdenka Kuncic
- Faculty of Science, School of Physics, The University of Sydney, Sydney, NSW, Australia.,Sydney Vital Translational Cancer Research Centre, St Leonards, NSW, Australia.,The University of Sydney Nano Institute, Sydney, NSW, Australia
| |
Collapse
|
13
|
Skoupilova H, Bartosik M, Sommerova L, Pinkas J, Vaculovic T, Kanicky V, Karban J, Hrstka R. Ferrocenes as new anticancer drug candidates: Determination of the mechanism of action. Eur J Pharmacol 2020; 867:172825. [DOI: 10.1016/j.ejphar.2019.172825] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/15/2019] [Accepted: 11/22/2019] [Indexed: 12/18/2022]
|
14
|
Cheng C, Huang DC, Zhao LY, Cao CJ, Chen GT. Preparation and in vitro absorption studies of a novel polysaccharide‑iron (III) complex from Flammulina velutipes. Int J Biol Macromol 2019; 132:801-810. [DOI: 10.1016/j.ijbiomac.2019.04.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 03/27/2019] [Accepted: 04/02/2019] [Indexed: 12/16/2022]
|
15
|
Thapa B, Diaz-Diestra D, Santiago-Medina C, Kumar N, Tu K, Beltran-Huarac J, Jadwisienczak WM, Weiner BR, Morell G. T 1- and T 2-weighted Magnetic Resonance Dual Contrast by Single Core Truncated Cubic Iron Oxide Nanoparticles with Abrupt Cellular Internalization and Immune Evasion. ACS APPLIED BIO MATERIALS 2018; 1:79-89. [PMID: 30094416 PMCID: PMC6077774 DOI: 10.1021/acsabm.8b00016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 06/15/2018] [Indexed: 11/28/2022]
Abstract
![]()
Conventional T1- or T2-weighted single mode
contrast-enhanced magnetic resonance imaging (MRI) may produce false
results. Thereby, there is a need to develop dual contrast agents,
T1- and T2-weighted, for more accurate MRI imaging.
The dual contrast agents should possess high magnetic resonance (MR)
relaxivities, targeted tumor linking, and minimum recognition by the
immune system. We have developed nitrodopamine-PEG grafted single
core truncated cubic iron oxide nanoparticles (ND-PEG-tNCIOs) capable
of producing marked dual contrasts in MRI with enhanced longitudinal
and transverse relaxivities of 32 ± 1.29 and 791 ± 38.39
mM–1 s–1, respectively. Furthermore,
the ND-PEG-tNCIOs show excellent colloidal stability in physiological
buffers and higher cellular internalization in cancerous cells than
in phagocytic cells, indicating the immune evasive capability of the
nanoparticles. These findings indicate that tNCIOs are strong candidates
for dual contrast MRI imaging, which is vital for noninvasive real-time
detection of nascent cancer cells in vivo and for monitoring stem
cells transplants.
Collapse
Affiliation(s)
- Bibek Thapa
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Physics, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Daysi Diaz-Diestra
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Carlene Santiago-Medina
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Biology, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Nitu Kumar
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States
| | - Kaixiong Tu
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Juan Beltran-Huarac
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Environmental Health, Harvard University, Boston, Massachusetts 02115-5810, United States
| | - Wojciech M Jadwisienczak
- School of Electrical Engineering and Computer Science, Ohio University, Athens, Ohio 45701-2769, United States
| | - Brad R Weiner
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| | - Gerardo Morell
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926-2614, United States.,Department of Physics, University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico 00925-2537, United States
| |
Collapse
|
16
|
Thiele NA, Abboud KA, Sloan KB. Novel double prodrugs of the iron chelator N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED): Synthesis, characterization, and investigation of activation by chemical hydrolysis and oxidation. Eur J Med Chem 2016; 118:193-207. [PMID: 27128183 DOI: 10.1016/j.ejmech.2016.04.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/23/2016] [Accepted: 04/13/2016] [Indexed: 11/26/2022]
Abstract
The development of iron chelators suitable for the chronic treatment of diseases where iron accumulation and subsequent oxidative stress are implicated in disease pathogenesis is an active area of research. The clinical use of the strong chelator N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED) and its alkyl ester prodrugs has been hindered by poor oral bioavailability and lack of conversion to the parent chelator, respectively. Here, we present novel double prodrugs of HBED that have the carboxylate and phenolate donors of HBED masked with carboxylate esters and boronic acids/esters, respectively. These double prodrugs were successfully synthesized as free bases (7a-f) or as dimesylate salts (8a-c,e), and were characterized by (1)H, (13)C, and (11)B NMR; MP; MS; and elemental analysis. The crystal structure of 8a was solved. Three of the double prodrugs (8a-c) were selected for further investigation into their abilities to convert to HBED by stepwise hydrolysis and H2O2 oxidation. The serial hydrolysis of the pinacol and methyl esters of N,N'-bis(2-boronic acid pinacol ester benzyl)ethylenediamine-N,N'-diacetic acid methyl ester dimesylate (8a) was verified by LC-MS. The macro half-lives for the hydrolyses of 8a-c, measured by UV, ranged from 3.8 to 26.3 h at 37 °C in pH 7.5 phosphate buffer containing 50% MeOH. 9, the product of hydrolysis of 8a-c and the intermediate in the conversion pathway, showed little-to-no affinity for iron or copper in UV competition experiments. 9 underwent a serial oxidative deboronation by H2O2 in N-methylmorpholine buffer to generate HBED (k = 10.3 M(-1) min(-1)). The requirement of this second step, oxidation, before conversion to the active chelator is complete may confer site specificity when only localized iron chelation is needed. Overall, these results provide proof of principle for the activation of the double prodrugs by chemical hydrolysis and H2O2 oxidation, and merit further investigation into the protective capabilities of the prodrugs against H2O2-induced cell death.
Collapse
Affiliation(s)
- Nikki A Thiele
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL 32610, USA.
| | - Khalil A Abboud
- Department of Chemistry, University of Florida, Gainesville, FL 32611, USA.
| | - Kenneth B Sloan
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL 32610, USA.
| |
Collapse
|
17
|
Nakamura K, Kawakami T, Yamamoto N, Tomizawa M, Fujiwara T, Ishii T, Harigae H, Ogasawara K. Activation of the NLRP3 inflammasome by cellular labile iron. Exp Hematol 2015; 44:116-24. [PMID: 26577567 DOI: 10.1016/j.exphem.2015.11.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 10/28/2015] [Accepted: 11/01/2015] [Indexed: 01/17/2023]
Abstract
Cellular labile iron, which contains chelatable redox-active Fe(2+), has been implicated in iron-mediated cellular toxicity leading to multiple organ dysfunction. Iron homeostasis is controlled by monocytes/macrophages through their iron recycling and storage capacities. Furthermore, iron sequestration by monocytes/macrophages is regulated by pro-inflammatory cytokines including interleukin-1, highlighting the importance of these cells in the crosstalk between inflammation and iron homeostasis. However, a role for cellular labile iron in monocyte/macrophage-mediated inflammatory responses has not been defined. Here we describe how cellular labile iron activates the NLRP3 inflammasome in human monocytes. Stimulation of lipopolysaccharide-primed peripheral blood mononuclear cells with ferric ammonium citrate increases the level of cellular Fe(2+) levels in monocytes and induces production of interleukin-1β in a dose-dependent manner. This ferric ammonium citrate-induced interleukin-1β production is dependent on caspase-1 and is significantly inhibited by an Fe(2+)-specific chelator. Ferric ammonium citrate consistently induced interleukin-1β secretion in THP1 cells, but not in NLRP3-deficient THP1 cells, indicating a requirement for the NLRP3 inflammasome. Additionally, activation of the inflammasome is mediated by potassium efflux, reactive oxygen species-mediated mitochondrial dysfunction, and lysosomal membrane permeabilization. Thus, these results suggest that monocytes/macrophages not only sequestrate iron during inflammation, but also mediate inflammation in response to cellular labile iron, which provides novel insights into the role of iron in chronic inflammation.
Collapse
Affiliation(s)
- Kyohei Nakamura
- Department of Immunobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Japan; Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Toru Kawakami
- Department of Immunobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Japan; Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Naoki Yamamoto
- Department of Immunobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Japan
| | - Miyu Tomizawa
- Department of Immunobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Japan
| | - Tohru Fujiwara
- Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomonori Ishii
- Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hideo Harigae
- Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kouetsu Ogasawara
- Department of Immunobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Japan.
| |
Collapse
|
18
|
|
19
|
Gudjoncik A, Guenancia C, Zeller M, Cottin Y, Vergely C, Rochette L. Iron, oxidative stress, and redox signaling in the cardiovascular system. Mol Nutr Food Res 2014; 58:1721-38. [PMID: 24888568 DOI: 10.1002/mnfr.201400036] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/24/2014] [Accepted: 04/07/2014] [Indexed: 12/19/2022]
Abstract
The redox state of the cell is predominantly dependent on an iron redox couple and is maintained within strict physiological limits. Iron is an essential metal for hemoglobin synthesis in erythrocytes, for oxidation-reduction reactions, and for cellular proliferation. The maintenance of stable iron concentrations requires the coordinated regulation of iron transport into plasma from dietary sources in the duodenum, from recycled senescent red cells in macrophages, and from storage in hepatocytes. The absorption of dietary iron, which is present in heme or nonheme form, is carried out by mature villus enterocytes of the duodenum and proximal jejunum. Multiple physiological processes are involved in maintaining iron homeostasis. These include its storage at the intracellular and extracellular level. Control of iron balance in the whole organism requires communication between sites of uptake, utilization, and storage. Key protein transporters and the molecules that regulate their activities have been identified. In this field, ferritins and hepcidin are the major regulator proteins. A variety of transcription factors may be activated depending on the level of oxidative stress, leading to the expression of different genes. Major preclinical and clinical trials have shown advances in iron-chelation therapy for the treatment of iron-overload disease as well as cardiovascular and chronic inflammatory diseases.
Collapse
Affiliation(s)
- Aurélie Gudjoncik
- Laboratoire de Physiopathologie et Pharmacologie Cardio-métaboliques (LPPCM) Inserm UMR866, Facultés de Médecine et de Pharmacie, Université de Bourgogne, Dijon, France; Service de Cardiologie CHU Bocage, Dijon, France
| | | | | | | | | | | |
Collapse
|
20
|
La Manna G, Ghinatti G, Tazzari PL, Alviano F, Ricci F, Capelli I, Cuna V, Todeschini P, Brunocilla E, Pagliaro P, Bonsi L, Stefoni S. Neutrophil gelatinase-associated lipocalin increases HLA-G(+)/FoxP3(+) T-regulatory cell population in an in vitro model of PBMC. PLoS One 2014; 9:e89497. [PMID: 24586826 PMCID: PMC3937322 DOI: 10.1371/journal.pone.0089497] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 01/23/2014] [Indexed: 12/15/2022] Open
Abstract
Background Neutrophil gelatinase-associated lipocalin (NGAL) is emerging as a mediator of various biological and pathological states. However, the specific biological role of this molecule remains unclear, as it serves as a biomarker for many conditions. The high sensitivity of NGAL as a biomarker coupled with relatively low specificity may hide important biological roles. Data point toward an acute compensatory, protective role for NGAL in response to adverse cellular stresses, including inflammatory and oxidative stress. The aim of this study was to understand whether NGAL modulates the T-cell response through regulation of the human leukocyte antigen G (HLA-G) complex, which is a mediator of tolerance. Methodology/Principal Findings Peripheral blood mononuclear cells (PBMCs) were obtained from eight healthy donors and isolated by centrifugation on a Ficoll gradient. All donors gave informed consent. PBMCs were treated with four different concentrations of NGAL (40–320 ng/ml) in an iron-loaded or iron-free form. Changes in cell phenotype were analyzed by flow cytometry. NGAL stimulated expression of HLA-G on CD4+ T cells in a dose- and iron-dependent manner. Iron deficiency prevented NGAL-mediated effects, such that HLA-G expression was unaltered. Furthermore, NGAL treatment affected stimulation of regulatory T cells and in vitro expansion of CD4+ CD25+ FoxP3+ cells. An NGAL neutralizing antibody limited HLA-G expression and significantly decreased the percentage of CD4+ CD25+ FoxP3+ cells. Conclusions/Significance We provide in vitro evidence that NGAL is involved in cellular immunity. The potential role of NGAL as an immunomodulatory molecule is based on its ability to induce immune tolerance by upregulating HLA-G expression and expansion of T-regulatory cells in healthy donors. Future studies should further evaluate the role of NGAL in immunology and immunomodulation and its possible relationship to immunosuppressive therapy efficacy, tolerance induction in transplant patients, and other immunological disorders.
Collapse
Affiliation(s)
- Gaetano La Manna
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
- * E-mail:
| | - Giulia Ghinatti
- Department of Internal and Experimental Medicine, Second University of Studies of Naples, Naples, Italy
| | - Pier Luigi Tazzari
- Service of Immunohematology and Transfusion Medicine, Department of Hematology, Oncology and Laboratory Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Francesco Alviano
- Section of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Francesca Ricci
- Service of Immunohematology and Transfusion Medicine, Department of Hematology, Oncology and Laboratory Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Irene Capelli
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Vania Cuna
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Paola Todeschini
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Eugenio Brunocilla
- Urology Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Pasqualepaolo Pagliaro
- Service of Immunohematology and Transfusion Medicine, Department of Hematology, Oncology and Laboratory Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Laura Bonsi
- Section of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Sergio Stefoni
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| |
Collapse
|
21
|
Byrne SL, Buckett PD, Kim J, Luo F, Sanford J, Chen J, Enns C, Wessling-Resnick M. Ferristatin II promotes degradation of transferrin receptor-1 in vitro and in vivo. PLoS One 2013; 8:e70199. [PMID: 23894616 PMCID: PMC3720890 DOI: 10.1371/journal.pone.0070199] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 06/14/2013] [Indexed: 12/13/2022] Open
Abstract
Previous studies have shown that the small molecule iron transport inhibitor ferristatin (NSC30611) acts by down-regulating transferrin receptor-1 (TfR1) via receptor degradation. In this investigation, we show that another small molecule, ferristatin II (NSC8679), acts in a similar manner to degrade the receptor through a nystatin-sensitive lipid raft pathway. Structural domains of the receptor necessary for interactions with the clathrin pathway do not appear to be necessary for ferristatin II induced degradation of TfR1. While TfR1 constitutively traffics through clathrin-mediated endocytosis, with or without ligand, the presence of Tf blocked ferristatin II induced degradation of TfR1. This effect of Tf was lost in a ligand binding receptor mutant G647A TfR1, suggesting that Tf binding to its receptor interferes with the drug’s activity. Rats treated with ferristatin II have lower TfR1 in liver. These effects are associated with reduced intestinal 59Fe uptake, lower serum iron and transferrin saturation, but no change in liver non-heme iron stores. The observed hypoferremia promoted by degradation of TfR1 by ferristatin II appears to be due to induced hepcidin gene expression.
Collapse
Affiliation(s)
- Shaina L. Byrne
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Peter D. Buckett
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Jonghan Kim
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Flora Luo
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Jack Sanford
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Juxing Chen
- Department of Cell Biology, Oregon Health Sciences Center, Portland, Oregon, United States of America
| | - Caroline Enns
- Department of Cell Biology, Oregon Health Sciences Center, Portland, Oregon, United States of America
| | - Marianne Wessling-Resnick
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
- * E-mail:
| |
Collapse
|
22
|
Kim J, Jia X, Buckett PD, Liu S, Lee CH, Wessling-Resnick M. Iron loading impairs lipoprotein lipase activity and promotes hypertriglyceridemia. FASEB J 2012; 27:1657-63. [PMID: 23241313 DOI: 10.1096/fj.12-224386] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Iron loading is associated with altered lipid metabolism, but underlying mechanisms remain unknown. We compared serum iron and triglycerides (TGs) in Belgrade rats, a genetic model of iron-loading anemia. Homozygous b/b rats had greater serum iron (68 vs. 28 μM; P=0.0004) and TG levels (180 vs. 84 mg/dl; P=0.014) compared to +/b controls. To confirm the association between iron loading and high TGs, Fischer rats were fed chow containing 1% carbonyl iron. Compared to controls pair-fed normal chow, carbonyl iron-fed rats had elevated serum iron (42 vs. 21 μM; P=0.007) and TGs (190 vs. 115 mg/dl; P=0.009). Despite normal hepatic production and secretion, TG clearance was lower in b/b than +/b rats due to reduced serum lipoprotein lipase (LPL) activity (3.1 vs. 5.0 mM/min; P=0.026). Likewise, LPL was lower in carbonyl iron-fed rats compared to controls (2.4 vs. 3.7 mM/min; P=0.017). Direct addition of iron to serum ex vivo or recombinant LPL in vitro decreased enzymatic activity in a dose-dependent manner. Lowering serum iron in Belgrade rats reduced TG levels (274 to 67 mg/dl, P=0.001). This study explains the relationship between iron status and lipid metabolism and provides mechanistic support for interventions that reduce serum iron levels in individuals at risk for hypertriglyceridemia.
Collapse
Affiliation(s)
- Jonghan Kim
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts 02115, USA
| | | | | | | | | | | |
Collapse
|