251
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Park EJ, Jeong U, Yoon C, Kim Y. Comparison of distribution and toxicity of different types of zinc-based nanoparticles. ENVIRONMENTAL TOXICOLOGY 2017; 32:1363-1374. [PMID: 27510841 DOI: 10.1002/tox.22330] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 07/14/2016] [Accepted: 07/17/2016] [Indexed: 06/06/2023]
Abstract
Zinc-based nanoparticles (Zn-NPs), mainly zinc oxide (ZnO) NPs, have promising application in a wide area, but their potential harmful effects on environment and human health have been continuously raised together with their high dissolution rate. In this study, we coated the surface of ZnO NPs with phosphate (ZnP NPs) and sulfide (ZnS NPs) which have very low solubility in water, administered orally (0.5 and 1 mg/kg) to mice for 28 days, and then compared their biodistribution and toxicity. As expected, ZnO NPs were rapidly ionized in an artificial gastric fluid. On the other hand, ZnO NPs were more particlized in an artificial intestinal fluid than ZnP and ZnS NPs. After repeated dosing, all three types of Zn-NPs the most distributed in the spleen and thymus and altered the level of redox reaction-related metal ions in the tissues. We also found that three types of Zn-NPs clearly disturb tissue ion homeostasis and influence immune regulation function. However, there were no remarkable difference in distribution and toxicity following repeated exposure of three types of Zn-NPs, although Na+ and K+ level in the spleen and thymus were notably higher in mice exposed to ZnO NPs compared to ZnP and ZnS NPs. Taken together, we suggest that all three types of Zn-NPs may influence human health by disrupting homeostasis of trace elements and ions in the tissues. In addition, the surface transformation of ZnO NPs with phosphate and sulfide may not attenuate toxicity due to the higher particlization rate of ZnO NPs in the intestine, at least in part. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1363-1374, 2017.
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Affiliation(s)
- Eun-Jung Park
- Myunggok Eye Research Institute, Konyang University, Daejeon, 302-718, Korea
| | - Uiseok Jeong
- Department of Chemical Engineering, Kwangwoon University, Seoul, 139-701, Korea
| | - Cheolho Yoon
- Seoul Center, Korea Basic Science Institute, Seoul, 126-16, Korea
| | - Younghun Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul, 139-701, Korea
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252
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Zhang L, Sahu ID, Xu M, Wang Y, Hu X. Effect of metal ions on the binding reaction of (−)-epigallocatechin gallate to β-lactoglobulin. Food Chem 2017; 221:1923-1929. [DOI: 10.1016/j.foodchem.2016.11.158] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 10/26/2016] [Accepted: 11/30/2016] [Indexed: 11/25/2022]
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253
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Similarities and differences of copper and zinc cations binding to biologically relevant peptides studied by vibrational spectroscopies. J Biol Inorg Chem 2017; 22:581-589. [DOI: 10.1007/s00775-017-1449-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/03/2017] [Indexed: 12/26/2022]
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254
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Nemashkalova EL, Permyakov EA, Permyakov SE, Litus EA. Modulation of linoleic acid-binding properties of human serum albumin by divalent metal cations. Biometals 2017; 30:341-353. [PMID: 28303360 DOI: 10.1007/s10534-017-0010-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/10/2017] [Indexed: 01/01/2023]
Abstract
Human serum albumin (HSA) is an abundant multiligand carrier protein, linked to progression of Alzheimer's disease (AD). Blood HSA serves as a depot of amyloid β (Aβ) peptide. Aβ peptide-buffering properties of HSA depend on interaction with its ligands. Some of the ligands, namely, linoleic acid (LA), zinc and copper ions are involved into AD progression. To clarify the interplay between LA and metal ion binding to HSA, the dependence of LA binding to HSA on Zn2+, Cu2+, Mg2+ and Ca2+ levels and structural consequences of these interactions have been explored. Seven LA molecules are bound per HSA molecule in the absence of the metal ions. Zn2+ binding to HSA causes a loss of one bound LA molecule, while the other metals studied exert an opposite effect (1-2 extra LA molecules are bound). In most cases, the observed effects are not related to the metal-induced changes in HSA quaternary structure. However, the Zn2+-induced decline in LA capacity of HSA could be due to accumulation of multimeric HSA forms. Opposite to Ca2+/Mg2+-binding, Zn2+ or Cu2+ association with HSA induces marked changes in its hydrophobic surface. Overall, the divalent metal ions modulate LA capacity and affinity of HSA to a different extent. LA- and Ca2+-binding to HSA synergistically support each other. Zn2+ and Cu2+ induce more pronounced changes in hydrophobic surface and quaternary structure of HSA and its LA capacity. A misbalanced metabolism of these ions in AD could modify interactions of HSA with LA, other fatty acids and hydrophobic substances, associated with AD.
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Affiliation(s)
- Ekaterina L Nemashkalova
- Protein Research Group, Institute for Biological Instrumentation of the Russian Academy of Sciences, Institutskaya Str., 7, Pushchino, Moscow region, Russia, 142290
| | - Eugene A Permyakov
- Protein Research Group, Institute for Biological Instrumentation of the Russian Academy of Sciences, Institutskaya Str., 7, Pushchino, Moscow region, Russia, 142290.,Department of Biomedical Engineering, Pushchino State Institute of Natural Sciences, Science av., 3, Pushchino, Moscow region, Russia, 142290
| | - Sergei E Permyakov
- Protein Research Group, Institute for Biological Instrumentation of the Russian Academy of Sciences, Institutskaya Str., 7, Pushchino, Moscow region, Russia, 142290.,Department of Biomedical Engineering, Pushchino State Institute of Natural Sciences, Science av., 3, Pushchino, Moscow region, Russia, 142290
| | - Ekaterina A Litus
- Protein Research Group, Institute for Biological Instrumentation of the Russian Academy of Sciences, Institutskaya Str., 7, Pushchino, Moscow region, Russia, 142290.
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255
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Kaur A, Banipal PK, Banipal TS. Study on the interactional behaviour of transition metal ions with myoglobin: A detailed calorimetric, spectroscopic and light scattering analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:236-244. [PMID: 27923210 DOI: 10.1016/j.saa.2016.11.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/14/2016] [Accepted: 11/24/2016] [Indexed: 06/06/2023]
Abstract
The energetics and the impact on the conformation of heme containing protein myoglobin (Mb) due to the binding of three transition metal ions (Zn2+, Ni2+, and Mn2+) have been investigated using isothermal titration calorimetry (ITC), dynamic light scattering (DLS), UV-vis, and circular dichroism (CD) spectroscopy under physiological conditions. The binding affinity of the order of 104M-1 has been observed for all metal ions from calorimetry as well as from absorption spectroscopy. The binding of these metal ions with Mb is a spontaneous process that exposes the hydrophobic groups away from the protein core as exhibited by the negative Gibbs free energy change (ΔG) and positive heat capacity change (ΔCp) values. Both light scattering and CD results demonstrates that the binding of Zn2+ and Mn2+ ions with Mb results in the folding whereas Ni2+ ion results in the unfolding of the protein. No direct interactions among the transition metal ions and heme moiety of Mb has been observed from absorption study. The results of these studies reveals that Mn2+ ion influences the biological functions of Mb to a larger extent in spite of its lowest affinity followed by Zn2+ and Ni2+ ions.
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Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Parampaul K Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Tarlok S Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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256
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Ischemia-Modified Albumin as a Marker of Acute Coronary Syndrome: The Case for Revising the Concept of "N-Terminal Modification" to "Fatty Acid Occupation" of Albumin. DISEASE MARKERS 2017; 2017:5692583. [PMID: 28356609 PMCID: PMC5357514 DOI: 10.1155/2017/5692583] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 02/19/2017] [Indexed: 02/07/2023]
Abstract
Ischemia-modified albumin (IMA) is assumed “N-terminal modified” albumin which is generated immediately following myocardial ischemia. The diagnosis of IMA is based on reduced cobalt binding affinity to albumin which is attributed mainly to incapability of cobalt to bind at albumin's modified N-terminus. Although the albumin cobalt binding test was accepted as a potentially powerful marker for discriminating acute coronary syndrome from nonischemic chest pain, its usefulness has been brought into question in recent years. Patients with acutely ischemic myocardium exhibit a rapid increase in serum levels of fatty acids (FAs). Almost all released FAs are strongly bound to albumin which create conformational changes in the protein with resultant reduced cobalt binding affinity. There is a clear metabolic and temporal relationship between IMA measured via albumin cobalt binding testing and serum levels of FAs. In line with what has been suggested recently in the literature, we conclude that a shift from the concept of “N-terminal modified” to “FA-occupied” albumin is required, as this better describes IMA in patients with acute coronary syndrome. We also offer “oxidation modified albumin, OMA,” which is conceptually different from the “FA-occupied” IMA, to describe modification of albumin in chronic disease associated with increased oxidative stress.
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257
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Vimalraj S, Sumantran VN, Chatterjee S. MicroRNAs: Impaired vasculogenesis in metal induced teratogenicity. Reprod Toxicol 2017; 70:30-48. [PMID: 28249814 DOI: 10.1016/j.reprotox.2017.02.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 02/14/2017] [Accepted: 02/21/2017] [Indexed: 02/07/2023]
Abstract
Certain metals have been known for their toxic effects on embryos and fetal development. The vasculature in early pregnancy is extremely dynamic and plays an important role in organogenesis. Nascent blood vessels in early embryonic life are considered to be a primary and delicate target for many teratogens since the nascent blood islands follow a tightly controlled program to form vascular plexus around and inside the embryo for resourcing optimal ingredients for its development. The state of the distribution of toxic metals, their transport mechanisms and the molecular events by which they notch extra-embryonic and embryonic vasculatures are illustrated. In addition, pharmacological aspects of toxic metal induced teratogenicity have also been portrayed. The work reviewed state of the current knowledge of specific role of microRNAs (miRNAs) that are differentially expressed in response to toxic metals, and how they interfere with the vasculogenesis that manifests into embryonic anomalies.
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Affiliation(s)
- Selvaraj Vimalraj
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India.
| | | | - Suvro Chatterjee
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India; Department of Biotechnology, Anna University, Chennai, India.
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258
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Hu HQ, Johnson RC, Merrell DS, Maroney MJ. Nickel Ligation of the N-Terminal Amine of HypA Is Required for Urease Maturation in Helicobacter pylori. Biochemistry 2017; 56:1105-1116. [PMID: 28177601 DOI: 10.1021/acs.biochem.6b00912] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The human pathogen Helicobacter pylori requires nickel for colonization of the acidic environment of the stomach. HypA, a Ni metallochaperone that is typically associated with hydrogenase maturation, is also required for urease maturation and acid survival of H. pylori. There are two proposed Ni site structures for HypA; one is a paramagnetic six-coordinate site characterized by X-ray absorption spectroscopy (XAS) in unmodified HypA, while another is a diamagnetic four-coordinate planar site characterized by solution nuclear magnetic resonance in an N-terminally modified HypA construct. To determine the role of the N-terminal amine in Ni binding of HypA, an N-terminal extension variant, L2*-HypA, in which a leucine residue was inserted into the second position of the amino acid sequence in the proposed Ni-binding motif, was characterized in vitro and in vivo. Structural characterization of the Ni site using XAS showed a coordination change from six-coordinate in wild-type HypA (WT-HypA) to five-coordinate pyramidal in L2*-HypA, which was accompanied by the loss of two N/O donor protein ligands and the addition of an exogenous bromide ligand from the buffer. The magnetic properties of the Ni sites in WT-HypA compared to those of the Ni sites in L2*-HypA confirmed that a spin-state change from high to low spin accompanied this change in structure. The L2*-HypA H. pylori strain was shown to be acid sensitive and deficient in urease activity in vivo. In vitro characterization showed that L2*-HypA did not disrupt the HypA-UreE interaction that is essential for urease maturation but was at least 20-fold weaker in Ni binding than WT-HypA. Characterization of the L2*-HypA variant clearly demonstrates that the N-terminal amine of HypA is involved in proper Ni coordination and is necessary for urease activity and acid survival.
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Affiliation(s)
- Heidi Q Hu
- Department of Chemistry and Program of Molecular and Cellular Biology, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Ryan C Johnson
- Microbiology and Immunology, Uniformed Services University of the Health Sciences , Bethesda, Maryland 20814, United States
| | - D Scott Merrell
- Microbiology and Immunology, Uniformed Services University of the Health Sciences , Bethesda, Maryland 20814, United States
| | - Michael J Maroney
- Department of Chemistry and Program of Molecular and Cellular Biology, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
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259
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Conte-Daban A, Borghesani V, Sayen S, Guillon E, Journaux Y, Gontard G, Lisnard L, Hureau C. Link between Affinity and Cu(II) Binding Sites to Amyloid-β Peptides Evaluated by a New Water-Soluble UV-Visible Ratiometric Dye with a Moderate Cu(II) Affinity. Anal Chem 2017; 89:2155-2162. [PMID: 28208266 PMCID: PMC5714188 DOI: 10.1021/acs.analchem.6b04979] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Being able to easily determine the Cu(II) affinity for biomolecules of moderate affinity is important. Such biomolecules include amyloidogenic peptides, such as the well-known amyloid-β peptide involved in Alzheimer's disease. Here, we report the synthesis of a new water-soluble ratiometric Cu(II) dye with a moderate affinity (109 M-1 at pH 7.1) and the characterizations of the Cu(II) corresponding complex by X-ray crystallography, EPR, and XAS spectroscopic methods. UV-vis competition was performed on the Aβ peptide as well as on a wide series of modified peptides, leading to an affinity value of 1.6 × 109 M-1 at pH 7.1 for the Aβ peptide and to a coordination model for the Cu(II) site within the Aβ peptide that agrees with the one mostly accepted currently.
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Affiliation(s)
- Amandine Conte-Daban
- CNRS; LCC (Laboratoire de Chimie de Coordination) ; 205, route de Narbonne, F-31077 Toulouse, France. Université de Toulouse; UPS, INPT ; LCC ; F-31077 Toulouse, France
| | - Valentina Borghesani
- CNRS; LCC (Laboratoire de Chimie de Coordination) ; 205, route de Narbonne, F-31077 Toulouse, France. Université de Toulouse; UPS, INPT ; LCC ; F-31077 Toulouse, France
| | - Stéphanie Sayen
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), UMR 7312 CNRS-URCA, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2, France
| | - Emmanuel Guillon
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), UMR 7312 CNRS-URCA, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2, France
| | - Yves Journaux
- Sorbonne Universités, UPMC Univ. Paris 06, UMR 8232, IPCM, F-75005, Paris, France
- CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Geoffrey Gontard
- Sorbonne Universités, UPMC Univ. Paris 06, UMR 8232, IPCM, F-75005, Paris, France
- CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Laurent Lisnard
- Sorbonne Universités, UPMC Univ. Paris 06, UMR 8232, IPCM, F-75005, Paris, France
- CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Christelle Hureau
- CNRS; LCC (Laboratoire de Chimie de Coordination) ; 205, route de Narbonne, F-31077 Toulouse, France. Université de Toulouse; UPS, INPT ; LCC ; F-31077 Toulouse, France
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260
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Complex Nature of Protein Carbonylation Specificity After Metal-Catalyzed Oxidation. Pharm Res 2017; 34:765-779. [DOI: 10.1007/s11095-017-2103-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/12/2017] [Indexed: 12/27/2022]
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261
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Sabbioni G, Turesky RJ. Biomonitoring Human Albumin Adducts: The Past, the Present, and the Future. Chem Res Toxicol 2017; 30:332-366. [PMID: 27989119 PMCID: PMC5241710 DOI: 10.1021/acs.chemrestox.6b00366] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Indexed: 12/21/2022]
Abstract
Serum albumin (Alb) is the most abundant protein in blood plasma. Alb reacts with many carcinogens and/or their electrophilic metabolites. Studies conducted over 20 years ago showed that Alb forms adducts with the human carcinogens aflatoxin B1 and benzene, which were successfully used as biomarkers in molecular epidemiology studies designed to address the role of these chemicals in cancer risk. Alb forms adducts with many therapeutic drugs or their reactive metabolites such as β-lactam antibiotics, acetylsalicylic acid, acetaminophen, nonsteroidal anti-inflammatory drugs, chemotherapeutic agents, and antiretroviral therapy drugs. The identification and characterization of the adduct structures formed with Alb have served to understand the generation of reactive metabolites and to predict idiosyncratic drug reactions and toxicities. The reaction of candidate drugs with Alb is now exploited as part of the battery of screening tools to assess the potential toxicities of drugs. The use of gas chromatography-mass spectrometry, liquid chromatography, or liquid chromatography-mass spectrometry (LC-MS) enabled the identification and quantification of multiple types of Alb xenobiotic adducts in animals and humans during the past three decades. In this perspective, we highlight the history of Alb as a target protein for adduction to environmental and dietary genotoxicants, pesticides, and herbicides, common classes of medicinal drugs, and endogenous electrophiles, and the emerging analytical mass spectrometry technologies to identify Alb-toxicant adducts in humans.
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Affiliation(s)
- Gabriele Sabbioni
- Institute of Environmental and Occupational Toxicology, CH-6780 Airolo, Switzerland
- Alpine Institute of Chemistry and Toxicology, CH-6718 Olivone, Switzerland
- Walther-Straub-Institut für Pharmakologie
und Toxikologie, Ludwig-Maximilians-Universität München, D-80336 München, Germany
| | - Robert J. Turesky
- Masonic Cancer Center and Department of
Medicinal Chemistry, College of Pharmacy, University of Minnesota, 2231 Sixth Street SE, Minneapolis, Minnesota 55455, United States
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262
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Gao D, Sheng Z, Liu Y, Hu D, Zhang J, Zhang X, Zheng H, Yuan Z. Protein-Modified CuS Nanotriangles: A Potential Multimodal Nanoplatform for In Vivo Tumor Photoacoustic/Magnetic Resonance Dual-Modal Imaging. Adv Healthc Mater 2017; 6. [PMID: 27976529 DOI: 10.1002/adhm.201601094] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 11/06/2016] [Indexed: 01/06/2023]
Abstract
Controllable preparation of water-soluble multifunctional nanoprobes is of great significance for cancer early diagnosis. In this study, protein-modified hydrophilic copper sufide (CuS) nanotriangles with tunable absorption in the second near-infrared region are developed in the presence of halide ions. Further, gadolinium ions chelated diethylenetriaminepentaacetic acid is conjugated on it by using the unique characteristics of the protein-protected nanotriangles. Specifically, the as-obtained nanostructures are investigated as contrast agents for enhanced in vivo photoacoustic/magnetic resonance dual-modal tumor imaging. More importantly, in vitro and in vivo toxicity analysis are also performed, which show that the dual-modal nanoprobes are biocompatible for most of the cases. It is demonstrated that the novel as-prepared protein-modified nanotriangles are able to work as a nanoplatform to construct dual-modal nanoprobes, which paves a new avenue for improving the photoacoustic/magnetic resonance imaging contrast in cancer detection. It should be pointed out that other functional blocks may also be linked on it, which makes it a general method to design multifunctional nanoprobes.
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Affiliation(s)
- Duyang Gao
- Bioimaging Core; Faculty of Health Sciences; University of Macau; Macau SAR 999078 P. R. China
| | - Zonghai Sheng
- Paul C. Lauterbur Research Center for Biomedical Imaging; Institute of Biomedical and Health Engineering; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Yubin Liu
- Bioimaging Core; Faculty of Health Sciences; University of Macau; Macau SAR 999078 P. R. China
| | - Dehong Hu
- Paul C. Lauterbur Research Center for Biomedical Imaging; Institute of Biomedical and Health Engineering; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Jian Zhang
- Bioimaging Core; Faculty of Health Sciences; University of Macau; Macau SAR 999078 P. R. China
| | - Xuanjun Zhang
- Bioimaging Core; Faculty of Health Sciences; University of Macau; Macau SAR 999078 P. R. China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical Imaging; Institute of Biomedical and Health Engineering; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Zhen Yuan
- Bioimaging Core; Faculty of Health Sciences; University of Macau; Macau SAR 999078 P. R. China
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263
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Sarbadhikary P, Dube A. Spectroscopic investigations on the binding of an iodinated chlorin p6-copper complex to human serum albumin. Photochem Photobiol Sci 2017; 16:1762-1770. [DOI: 10.1039/c7pp00197e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An iodinated chlorin p6 copper complex showed high affinity to bind human serum albumin, the binding site was predicted and it was demonstrated that binding did not affect protein conformation.
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Affiliation(s)
- P. Sarbadhikary
- Raja Ramanna Centre for Advanced Technology
- Indore
- India
- Homi Bhabha National Institute
- Training School Complex
| | - A. Dube
- Raja Ramanna Centre for Advanced Technology
- Indore
- India
- Homi Bhabha National Institute
- Training School Complex
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264
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A survey of the mechanisms of action of anticancer transition metal complexes. Future Med Chem 2016; 8:2263-2286. [DOI: 10.4155/fmc-2016-0153] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Metal complexes have been the subject of numerous investigations in oncology but, despite the plethora of newly synthesized compounds, their precise mechanisms of action remain generally unknown or, for the best, incompletely determined. The continuous development of efficient and sensitive techniques in analytical chemistry and molecular biology gives scientists new tools to gather information on how metal complexes can be effective toward cancer. This review focuses on recent findings about the anticancer mechanism of action of metal complexes and how the ligands can be used to tune their pharmacological and physicochemical properties.
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265
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New cobalt(II) and nickel(II) complexes of benzyl carbazate Schiff bases: Syntheses, crystal structures, in vitro DNA and HSA binding studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 165:220-231. [DOI: 10.1016/j.jphotobiol.2016.10.024] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 10/21/2016] [Indexed: 11/17/2022]
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266
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Shakir M, Hanif S, Alam MF, Younus H. Molecular hybridization approach of bio-potent CuII/ZnII complexes derived from N, O donor bidentate imine scaffolds: Synthesis, spectral, human serum albumin binding, antioxidant and antibacterial studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 165:96-114. [DOI: 10.1016/j.jphotobiol.2016.10.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/06/2016] [Indexed: 11/24/2022]
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267
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Remelli M, Nurchi VM, Lachowicz JI, Medici S, Zoroddu MA, Peana M. Competition between Cd(II) and other divalent transition metal ions during complex formation with amino acids, peptides, and chelating agents. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.07.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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268
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Handing KB, Shabalin IG, Kassaar O, Khazaipoul S, Blindauer CA, Stewart AJ, Chruszcz M, Minor W. Circulatory zinc transport is controlled by distinct interdomain sites on mammalian albumins. Chem Sci 2016; 7:6635-6648. [PMID: 28567254 PMCID: PMC5450522 DOI: 10.1039/c6sc02267g] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 08/13/2016] [Indexed: 01/08/2023] Open
Abstract
Zinc is an essential nutrient in the body; it is required for the catalytic activity of many hundreds of human enzymes and virtually all biological processes, therefore its homeostasis and trafficking is of crucial interest. Serum albumin is the major carrier of Zn2+ in the blood and is required for its systemic distribution. Here we present the first crystal structures of human serum albumin (HSA) and equine serum albumin (ESA) in complex with Zn2+. The structures allow unambiguous identification of the major zinc binding site on these two albumins, as well as several further, weaker zinc binding sites. The major site in both HSA and ESA has tetrahedral geometry and comprises three protein ligands from the sidechains of His67, His247 and Asp249 and a water molecule. Isothermal titration calorimetric studies of a HSA H67A mutant confirm this to be the highest affinity Zn2+ site. Furthermore, analysis of Zn2+ binding to HSA and ESA proved the presence of secondary sites with 20-50-fold weaker affinities, which may become of importance under particular physiological conditions. Both calorimetry and crystallography suggest that ESA possesses an additional site compared to HSA, involving Glu153, His157 and His288. The His157 residue is replaced by Phe in HSA, incapable of metal coordination. Collectively, these findings are critical to our understanding of the role serum albumin plays in circulatory Zn2+ handling and cellular delivery.
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Affiliation(s)
- Katarzyna B Handing
- Department of Molecular Physiology and Biological Physics , University of Virginia School of Medicine , PO Box 800736 , Charlottesville , VA 22908-0736 , USA . ; Tel: +1-434-243-6865
- New York Structural Genomics Research Consortium (NYSGRC) , USA
| | - Ivan G Shabalin
- Department of Molecular Physiology and Biological Physics , University of Virginia School of Medicine , PO Box 800736 , Charlottesville , VA 22908-0736 , USA . ; Tel: +1-434-243-6865
- New York Structural Genomics Research Consortium (NYSGRC) , USA
| | - Omar Kassaar
- School of Medicine , University of St. Andrews , St. Andrews KY16 9TF , UK
| | - Siavash Khazaipoul
- School of Medicine , University of St. Andrews , St. Andrews KY16 9TF , UK
| | | | - Alan J Stewart
- School of Medicine , University of St. Andrews , St. Andrews KY16 9TF , UK
| | - Maksymilian Chruszcz
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA
| | - Wladek Minor
- Department of Molecular Physiology and Biological Physics , University of Virginia School of Medicine , PO Box 800736 , Charlottesville , VA 22908-0736 , USA . ; Tel: +1-434-243-6865
- New York Structural Genomics Research Consortium (NYSGRC) , USA
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269
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Chakravarty R, Chakraborty S, Dash A. 64Cu2+ Ions as PET Probe: An Emerging Paradigm in Molecular Imaging of Cancer. Mol Pharm 2016; 13:3601-3612. [DOI: 10.1021/acs.molpharmaceut.6b00582] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rubel Chakravarty
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Sudipta Chakraborty
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Ashutosh Dash
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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270
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Davé E, Adams R, Zaccheo O, Carrington B, Compson JE, Dugdale S, Airey M, Malcolm S, Hailu H, Wild G, Turner A, Heads J, Sarkar K, Ventom A, Marshall D, Jairaj M, Kopotsha T, Christodoulou L, Zamacona M, Lawson AD, Heywood S, Humphreys DP. Fab-dsFv: A bispecific antibody format with extended serum half-life through albumin binding. MAbs 2016; 8:1319-1335. [PMID: 27532598 PMCID: PMC5058625 DOI: 10.1080/19420862.2016.1210747] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 06/19/2016] [Accepted: 07/05/2016] [Indexed: 11/24/2022] Open
Abstract
An antibody format, termed Fab-dsFv, has been designed for clinical indications that require monovalent target binding in the absence of direct Fc receptor (FcR) binding while retaining substantial serum presence. The variable fragment (Fv) domain of a humanized albumin-binding antibody was fused to the C-termini of Fab constant domains, such that the VL and VH domains were individually connected to the Cκ and CH1 domains by peptide linkers, respectively. The anti-albumin Fv was selected for properties thought to be desirable to ensure a durable serum half-life mediated via FcRn. The Fv domain was further stabilized by an inter-domain disulfide bond. The bispecific format was shown to be thermodynamically and biophysically stable, and retained good affinity and efficacy to both antigens simultaneously. In in vivo studies, the serum half-life of Fab-dsFv, 2.6 d in mice and 7.9 d in cynomolgus monkeys, was equivalent to Fab'-PEG.
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271
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Park EJ, Lee GH, Yoon C, Kim DW. Comparison of distribution and toxicity following repeated oral dosing of different vanadium oxide nanoparticles in mice. ENVIRONMENTAL RESEARCH 2016; 150:154-165. [PMID: 27288913 DOI: 10.1016/j.envres.2016.05.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/11/2016] [Accepted: 05/19/2016] [Indexed: 06/06/2023]
Abstract
Vanadium is an important ultra-trace element derived from fuel product combustion. With the development of nanotechnology, vanadium oxide nanoparticles (VO NPs) have been considered for application in various fields, thus the possibility of release into the environment and human exposure is also increasing. Considering that verification of bioaccumulation and relevant biological responses are essential for safe application of products, in this study, we aimed to identify the physicochemical properties that determine their health effects by comparing the biological effects and tissue distribution of different types of VO NPs in mice. For this, we prepared five types of VO NPs, commercial (C)-VO2 and -V2O5 NPs and synthetic (S)-VO2, -V2O3, and -V2O5 NPs. While the hydrodynamic diameter of the two types of C-VO NPs was irregular and impossible to measure, those of the three types of S-VO NPs was in the range of 125-170nm. The S- and C-V2O5 NPs showed higher dissolution rates compared to other VO NPs. We orally dosed the five types of VO NPs (70 and 210μg/mouse, approximately 2 and 6mg/kg) to mice for 28 days and compared their biodistribution and toxic effects. We found that S-V2O5 and S-V2O3 NPs more accumulated in tissues compared to other three types of VO NPs, and the accumulated level was in order of heart>liver>kidney>spleen. Additionally, tissue levels of redox reaction-related elements and electrolytes (Na(+), K(+), and Ca(2+)) were most clearly altered in the heart of treated mice. Notably, all S- and C-VO NPs decreased the number of WBCs at the higher dose, while total protein and albumin levels were reduced at the higher dose of S-V2O5 and S-V2O3 NPs. Taken together, we conclude that the biodistribution and toxic effects of VO NPs depend on their dissolution rates and size (surface area). Additionally, we suggest that further studies are needed to clarify effects of VO NPs on functions of the heart and the immune system.
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Affiliation(s)
- Eun-Jung Park
- Myunggok Eye Research Institute, Konyang University, Daejeon 302-718, South Korea.
| | - Gwang-Hee Lee
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 136-713, South Korea
| | - Cheolho Yoon
- Seoul Center, Korea Basic Science Institute, Seoul 126-16, South Korea
| | - Dong-Wan Kim
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 136-713, South Korea.
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272
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Abstract
Zinc is an essential trace element playing fundamental roles in cellular metabolism. It acts mostly by binding a wide range of proteins, thus affecting a broad spectrum of biological processes, which include cell division, growth and differentiation. Zinc is critical to a large number of structural proteins, enzymatic processes, and transcription factors. Zinc deficiency can result in a spectrum of clinical manifestations, such as poor of appetite, loss of body hair, altered taste and smell, testicular atrophy, cerebral and immune dysfunction, and diminished drug elimination capacity. These are common symptoms in patients with chronic liver diseases, especially liver cirrhosis. The liver is the main organ responsible for the zinc metabolism which can be affected by liver diseases. On the other hand, zinc deficiency may alter hepatocyte functions and also immune responses in inflammatory liver diseases. Liver cirrhosis represents the most advanced stage of chronic liver diseases and is the common outcome of chronic liver injury. It is associated with energy malnutrition, with numerous metabolic disorders, such as hypoalbuminemia, with imbalance between branched-chain amino acids and aromatic amino acids, and with reduced zinc serum concentrations. All these processes can influence the clinical outcome of patients, such ascites, hepatic encephalopathy and hepatocellular carcinoma. In the present review, we summarize the emerging evidence on the pitoval role of zinc in the pathogenesis of liver cirrhosis.
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Affiliation(s)
| | - Dirk Reinhold
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
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273
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Magrì A, Tabbì G, Giuffrida A, Pappalardo G, Satriano C, Naletova I, Nicoletti VG, Attanasio F. Influence of the N-terminus acetylation of Semax, a synthetic analog of ACTH(4-10), on copper(II) and zinc(II) coordination and biological properties. J Inorg Biochem 2016; 164:59-69. [PMID: 27586814 DOI: 10.1016/j.jinorgbio.2016.08.013] [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: 03/31/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
Abstract
Semax is a heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) that encompasses the sequence 4-7 of N-terminal domain of the adrenocorticotropic hormone and a C-terminal Pro-Gly-Pro tripeptide. N-terminal amino group acetylation (Ac-Semax) modulates the chemical and biological properties of parental peptide, modifying the ability of Semax to form complex species with Cu(II) ion. At physiological pH, the main complex species formed by Ac-Semax, [CuLH-2]2-, consists in a distorted CuN3O chromophore with a weak apical interaction of the methionine sulphur. Such a complex differs from the Cu(II)-Semax complex system, which exhibits a CuN4 chromophore. The reduced ligand field affects the [CuLH-2]2- formal redox potential, which is more positive than that of Cu(II)-Semax corresponding species. In the amino-free form, the resulting complex species is redox-stable and unreactive against ascorbic acid, unlike the acetylated form. Semax acetylation did not protect from Cu(II) induced toxicity on a SH-SY5Y neuroblastoma cell line, thus demonstrating the crucial role played by the free NH2 terminus in the cell protection. Since several brain diseases are associated either to Cu(II) or Zn(II) dyshomeostasis, here we characterized also the complex species formed by Zn(II) with Semax and Ac-Semax. Both peptides were able to form Zn(II) complex species with comparable strength. Confocal microscopy imaging confirmed that peptide group acetylation does not affect the Zn(II) influx in neuroblastoma cells. Moreover, a punctuate distribution of Zn(II) within the cells suggests a preferred subcellular localization that might explain the zinc toxic effect. A future perspective can be the use of Ac-Semax as ionophore in antibody drug conjugates to produce a dysmetallostasis in tumor cells.
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Affiliation(s)
- Antonio Magrì
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy
| | - Giovanni Tabbì
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy.
| | - Alessandro Giuffrida
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy
| | - Giuseppe Pappalardo
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy
| | - Cristina Satriano
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Irina Naletova
- Dipartimento di Scienze Biomediche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy; Consorzio Interuniversitario C.I.R.C.S.M.B., Via C. Ulpiani 27, 70125 Bari, Italy
| | - Vincenzo G Nicoletti
- Dipartimento di Scienze Biomediche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Francesco Attanasio
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy.
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274
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Yang T, Wang Y, Ke H, Wang Q, Lv X, Wu H, Tang Y, Yang X, Chen C, Zhao Y, Chen H. Protein-Nanoreactor-Assisted Synthesis of Semiconductor Nanocrystals for Efficient Cancer Theranostics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5923-5930. [PMID: 27165472 DOI: 10.1002/adma.201506119] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 02/23/2016] [Indexed: 06/05/2023]
Abstract
Transition metal sulfide nanocrystals are developed as a theranostic platform through the protein-nanoreactor approach with facile functionalization for multimodal NIRF/PA/SPECT/CT imaging and photothermal tumor ablation.
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Affiliation(s)
- Tao Yang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Yong Wang
- School of Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicineof Jiangsu Higher Education Institutions and School of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Hengte Ke
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Qiaoli Wang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Xiaoyan Lv
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Hong Wu
- School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, China
| | - Yongan Tang
- National Engineering Research Center for Nanomedicine and College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine and College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing, 100190, China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing, 100190, China
| | - Huabing Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
- School of Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicineof Jiangsu Higher Education Institutions and School of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
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275
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Adams R, Griffin L, Compson JE, Jairaj M, Baker T, Ceska T, West S, Zaccheo O, Davé E, Lawson AD, Humphreys DP, Heywood S. Extending the half-life of a fab fragment through generation of a humanized anti-human serum albumin Fv domain: An investigation into the correlation between affinity and serum half-life. MAbs 2016; 8:1336-1346. [PMID: 27315033 PMCID: PMC5058626 DOI: 10.1080/19420862.2016.1185581] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We generated an anti-albumin antibody, CA645, to link its Fv domain to an antigen-binding fragment (Fab), thereby extending the serum half-life of the Fab. CA645 was demonstrated to bind human, cynomolgus, and mouse serum albumin with similar affinity (1–7 nM), and to bind human serum albumin (HSA) when it is in complex with common known ligands. Importantly for half-life extension, CA645 binds HSA with similar affinity within the physiologically relevant range of pH 5.0 – pH 7.4, and does not have a deleterious effect on the binding of HSA to neonatal Fc receptor (FcRn). A crystal structure of humanized CA645 Fab in complex with HSA was solved and showed that CA645 Fab binds to domain II of HSA. Superimposition with the crystal structure of FcRn bound to HSA confirmed that CA645 does not block HSA binding to FcRn. In mice, the serum half-life of humanized CA645 Fab is 84.2 h. This is a significant extension in comparison with < 1 h for a non-HSA binding CA645 Fab variant. The Fab-HSA structure was used to design a series of mutants with reduced affinity to investigate the correlation between the affinity for albumin and serum half-life. Reduction in the affinity for MSA by 144-fold from 2.2 nM to 316 nM had no effect on serum half-life. Strikingly, despite a reduction in affinity to 62 µM, an extension in serum half-life of 26.4 h was still obtained. CA645 Fab and the CA645 Fab-HSA complex have been deposited in the Protein Data Bank (PDB) with accession codes, 5FUZ and 5FUO, respectively.
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Affiliation(s)
| | - Laura Griffin
- b Ashfield Healthcare Communications , Macclesfield , Cheshire , UK
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276
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Bijelic A, Theiner S, Keppler BK, Rompel A. X-ray Structure Analysis of Indazolium trans-[Tetrachlorobis(1H-indazole)ruthenate(III)] (KP1019) Bound to Human Serum Albumin Reveals Two Ruthenium Binding Sites and Provides Insights into the Drug Binding Mechanism. J Med Chem 2016; 59:5894-903. [PMID: 27196130 PMCID: PMC4921950 DOI: 10.1021/acs.jmedchem.6b00600] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
![]()
Ruthenium(III) complexes are promising
candidates for anticancer
drugs, especially the clinically studied indazolium trans-[tetrachlorobis(1H-indazole)ruthenate(III)] (KP1019)
and its analogue sodium trans-[tetrachlorobis(1H-indazole)ruthenate(III)] (NKP-1339). Several studies have
emphasized the likely role of human serum proteins in the transportation
and accumulation of ruthenium(III) complexes in tumors. Therefore,
the interaction between KP1019 and human serum albumin was investigated
by means of X-ray crystallography and inductively coupled plasma mass
spectrometry (ICP-MS). The structural data unambiguously reveal the
binding of two ruthenium atoms to histidine residues 146 and 242,
which are both located within well-known hydrophobic binding pockets
of albumin. The ruthenium centers are octahedrally coordinated by
solvent molecules revealing the dissociation of both indazole ligands
from the ruthenium-based drug. However, a binding mechanism is proposed
indicating the importance of the indazole ligands for binding site
recognition and thus their indispensable role for the binding of KP1019.
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Affiliation(s)
- Aleksandar Bijelic
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien , Althanstraße 14, 1090 Wien, Austria
| | | | | | - Annette Rompel
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien , Althanstraße 14, 1090 Wien, Austria
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277
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Physiologically relevant plasma d,l-homocysteine concentrations mobilize Cd from human serum albumin. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1027:181-6. [PMID: 27294530 DOI: 10.1016/j.jchromb.2016.05.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/26/2016] [Accepted: 05/09/2016] [Indexed: 12/20/2022]
Abstract
Although low-level chronic exposure of humans to cadmium (Cd(2+)) can result in a variety of adverse health effects, little is known about the role that its interactions with plasma proteins and small molecular weight (SMW) ligands in the bloodstream may play in delivering this metal to its target organs. To gain insight, a Cd-human serum albumin (HSA) 1:1 (molar ratio) complex was analyzed by size exclusion chromatography (SEC) coupled on-line to a flame atomic absorption spectrometer (FAAS). Using a phosphate buffered saline (PBS)-buffer mobile phase, the stability of the Cd-HSA complex was investigated in the presence of 2.0mM of SMW ligands, including taurine, acetaminophen, l-methionine, l-cysteine (Cys), d,l-homocysteine (hCys) or l-cysteine methyl-ester (Cys-Me). While taurine, acetaminophen and l-methionine did not affect its integrity, Cys, hCys and Cys-Me completely abstracted Cd from HSA. Subsequent investigations into the effect of 1.5, 1.0 and 0.5mM Cys and hCys on the integrity of the Cd-HSA complex revealed clear differences with regard to the nature of the eluting SMW-Cd species between these structurally related endogenous thiols. Interestingly, the Cd-specific chromatograms that were obtained for 0.5mM hCys revealed the elution of an apparent mixture of the parent Cd-HSA complex with a significant contribution of a structurally uncharacterized CdxhCysy species. Since this hCys concentration is encountered in blood plasma of hyperhomocysteinemia patients and since previous studies by others have revealed that a SH-containing carrier mediates the uptake of Cd into hepatocytes, our results suggest that plasma hCys may play a role in the toxicologically relevant translocation of Cd from the bloodstream to mammalian target organs.
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278
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Sanidad KZ, Sukamtoh E, Wang W, Du Z, Florio E, He L, Xiao H, Decker EA, Zhang G. Oxidative Conversion Mediates Antiproliferative Effects of tert-Butylhydroquinone: Structure and Activity Relationship Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3743-3748. [PMID: 27111399 DOI: 10.1021/acs.jafc.6b00711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Previous studies have shown that tert-butylhydroquinone (TBHQ), a widely used food antioxidant, has cytotoxic effects at high doses; however, the underlying mechanisms are not well understood. Here, we found that the effects of TBHQ on cell proliferation, cell cycle progression, and apoptosis are mainly mediated by its oxidative conversion to a quinone metabolite tert-butylquinone (TBQ). Co-addition of cupric ion (Cu(2+)) caused accelerated oxidative conversion of TBHQ to TBQ and enhanced the biological activities of TBHQ on cell proliferation, cell cycle progression, and apoptosis in MC38 colon cancer cells. In contrast, co-addition of ethylenediaminetetraacetic acid (EDTA) suppressed TBHQ oxidation and inhibited the biological activities of TBHQ in MC38 cells. For example, after 24 h of treatment in basal medium, low-dose TBHQ (1.88-7.5 μM) had little effect on MC38 cell proliferation, while co-addition of 50 μM Cu(2+) caused 30-70% inhibition of cell proliferation; in contrast, treatment with high-dose TBHQ (15 μM) inhibited 50 ± 4% MC38 proliferation, which was abolished by co-addition of 50 μM EDTA. We further showed that TBQ had more potent actions on cell proliferation and associated cellular responses than TBHQ, supporting a critical role of TBQ formation in the biological activities of TBHQ. Finally, a structure and activity relationship study showed that the fast-oxidized para-hydroquinones had potent antiproliferative effects in MC38 cells, while the slow-oxidized para-hydroquinones had weak or little biological activities. Together, these results suggest that the biological activities of TBHQ and other para-hydroquinones are mainly mediated by their oxidative metabolism to generate more biologically active quinone metabolites.
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Affiliation(s)
- Katherine Z Sanidad
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Elvira Sukamtoh
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Weicang Wang
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Zheyuan Du
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Ellie Florio
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Lili He
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Hang Xiao
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Eric A Decker
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Guodong Zhang
- Department of Food Science, and §Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
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279
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Yan J, Wu D, Sun P, Ma X, Wang L, Li S, Xu K, Li H. Binding mechanism of the tyrosine-kinase inhibitor nilotinib to human serum albumin determined by 1 H STD NMR, 19 F NMR, and molecular modeling. J Pharm Biomed Anal 2016; 124:1-9. [DOI: 10.1016/j.jpba.2016.02.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 02/15/2016] [Accepted: 02/17/2016] [Indexed: 11/28/2022]
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280
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Tracking antitumor metallodrugs: promising agents with the Ru(II)- and Fe(II)-cyclopentadienyl scaffolds. Future Med Chem 2016; 8:527-44. [PMID: 27096164 DOI: 10.4155/fmc.16.7] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Research on the field of metal complexes for the treatment of cancer diseases has attracted increasing interest due to the urgency in finding more efficient and selective treatments. Owing to their wide structural diversity, organometallic complexes appear as potential alternatives to the design of new anticancer candidates. Herein, we review recent progress in our work toward the development of new drugs based on Ru(II)- and Fe(II)-cyclopentadienyl scaffolds. Their design and chemical properties are reviewed and correlated with their biological effects, in particular the key role that coligands play in the overall behavior of the complex.
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281
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Zamariola G, Watly J, Gallerani E, Gavioli R, Guerrini R, Kozlowski H, Remelli M. AGHLDDLPGALSAL: A hemoglobin fragment potentially competing with albumin to bind transition metal ions. J Inorg Biochem 2016; 163:301-310. [PMID: 27087285 DOI: 10.1016/j.jinorgbio.2016.04.001] [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: 12/23/2015] [Revised: 03/14/2016] [Accepted: 04/03/2016] [Indexed: 01/08/2023]
Abstract
Protein degradation leads to the formation of endogenous peptides, the biological activity of which is most often unknown. The peptide AGHLDDLPGALSAL, recently isolated from mouse brain homogenates, has been recognized as a fragment of the α-chain of hemoglobin. AGHLDDLPGALSAL has the ability of inhibiting the peripheral hyperalgesic inflammatory responses through the indirect activation of the μ-opioid receptors. A peculiarity of AGHLDDLPGALSAL is the presence, at its N-terminus of a strong binding site for divalent transition metal ions, similar to that characterizing the human albumin and called "ATCUN motif". The consequential metal binding ability of AGHLDDLPGALSAL can be connected to its biological activity. For this reason, we decided to investigate the coordination properties of AGHLDDLPGALSAL towards Cu(II), Ni(II) and Zn(II) ions, reported here for the first time. The results confirm that AGHLDDLPGALSAL is a strong ligand for those metals: it can even compete with albumin under suitable conditions. In vitro assays on the inhibition of Cu(II) toxicity towards different cell lines confirmed that the binding ability of AGHLDDLPGALSAL can imply relevant biological consequences.
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Affiliation(s)
- Giulia Zamariola
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, via Fossato di Mortara 17, I-44121 Ferrara, Italy
| | - Joanna Watly
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Eleonora Gallerani
- Department of Life Sciences and Biotechnology, University of Ferrara, via Luigi Borsari 46, I-44121 Ferrara, Italy
| | - Riccardo Gavioli
- Department of Life Sciences and Biotechnology, University of Ferrara, via Luigi Borsari 46, I-44121 Ferrara, Italy
| | - Remo Guerrini
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, via Fossato di Mortara 17, I-44121 Ferrara, Italy
| | - Henryk Kozlowski
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.
| | - Maurizio Remelli
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, via Fossato di Mortara 17, I-44121 Ferrara, Italy.
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282
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Park EJ, Kim SN, Kang MS, Lee BS, Yoon C, Jeong U, Kim Y, Lee GH, Kim DW, Kim JS. A higher aspect ratio enhanced bioaccumulation and altered immune responses due to intravenously-injected aluminum oxide nanoparticles. J Immunotoxicol 2016; 13:439-48. [PMID: 27042761 DOI: 10.3109/1547691x.2015.1122116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Aluminum oxide nanoparticles (AlO NP) have been widely utilized in a variety of areas, including in the optical, biomedical and electronic fields and in the overall development of nanotechnologies. However, their toxicological profiles are still not fully developed. This study compared the distribution and immunotoxicity of two rod-types of AlO NP. As reported previously, the two types of AlO NP had different aspect ratios (long-type: 6.2 ± 0.6, short-type: 2.1 ± 0.4), but the size and surface charge were very similar. On Day 14 after a single intravenous (IV) injection (1.25 or 5 mg/kg), both AlO NP accumulated primarily in the liver and spleen and altered the levels of redox response-related elements. The accumulated level was higher in mice exposed to the long-type AlO NP compared to the short-type. Additionally, it was noted that the levels of IL-1β, IL-8 and MCP-1 were enhanced in the blood of mice exposed to both types of AlO NP and the percentages of neutrophils and monocytes among all white blood cells were increased only in mice injected with the long-type AlO NP (5 mg/kg). In addition, as compared to the control, co-expression of CD80 and CD86 (necessary for antigen presentation) on splenocytes together with a decreased expression of chemotaxis-related marker (CD195) was attenuated by exposure to the AlO NP, especially the long-type. Taken together, the data suggest that accumulation following a single IV injection with rod-types of AlO NP is strengthened by a high aspect ratio and, subsequently, this accumulation has the potential to influence immune functions in an exposed host.
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Affiliation(s)
- Eun-Jung Park
- a Myunggok Eye Research Institute, Konyang University , Daejeon , Korea
| | - Soo Nam Kim
- b Toxicologic Pathology Center, Korea Institute of Toxicology , Daejeon , Korea
| | - Min-Sung Kang
- b Toxicologic Pathology Center, Korea Institute of Toxicology , Daejeon , Korea
| | - Byoung-Seok Lee
- b Toxicologic Pathology Center, Korea Institute of Toxicology , Daejeon , Korea
| | - Cheolho Yoon
- c Seoul Center, Korea Basic Science Institute , Seoul , Korea
| | - Uiseok Jeong
- d Department of Chemical Engineering , Kwangwoon University , Seoul , Korea
| | - Younghun Kim
- d Department of Chemical Engineering , Kwangwoon University , Seoul , Korea
| | - Gwang-Hee Lee
- e School of Civil, Environmental and Architectural Engineering, Korea University , Seoul , Korea
| | - Dong-Wan Kim
- e School of Civil, Environmental and Architectural Engineering, Korea University , Seoul , Korea
| | - Jong Sung Kim
- f Department of Community Health and Epidemiology , Faculty of Medicine, Dalhousie University , Halifax , NS , Canada
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283
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Valerio C, Theocharidou E, Davenport A, Agarwal B. Human albumin solution for patients with cirrhosis and acute on chronic liver failure: Beyond simple volume expansion. World J Hepatol 2016; 8:345-354. [PMID: 26981172 PMCID: PMC4779163 DOI: 10.4254/wjh.v8.i7.345] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/22/2015] [Accepted: 02/16/2016] [Indexed: 02/06/2023] Open
Abstract
To provide an overview of the properties of human serum albumin (HSA), and to review the evidence for the use of human albumin solution (HAS) in critical illness, sepsis and cirrhosis. A MEDLINE search was performed using the terms “human albumin”, “critical illness”, “sepsis” and “cirrhosis”. The references of retrieved articles were reviewed manually. Studies published between 1980 and 2014 were selected based on quality criteria. Data extraction was performed by all authors. HSA is the main plasma protein contributing greatly to its oncotic pressure. HSA demonstrates important binding properties for endogenous and exogenous toxins, drugs and drug metabolites that account for its anti-oxidant and anti-inflammatory properties. In disease states, hypoalbuminaemia is secondary to decreased HSA production, increased loss or transcapillary leakage into the interstitial space. HSA function can be also altered in disease with reduced albumin binding capacity and increased production of modified isoforms. HAS has been used as volume expander in critical illness, but received criticism due to cost and concerns regarding safety. More recent studies confirmed the safety of HAS, but failed to show any survival benefit compared to the cheaper crystalloid fluids, therefore limiting its use. On the contrary, in cirrhosis there is robust data to support the efficacy of HAS for the prevention of circulatory dysfunction post-large volume paracentesis and in the context of spontaneous bacterial peritonitis, and for the treatment of hepato-renal syndrome and hypervolaemic hyponatraemia. It is likely that not only the oncotic properties of HAS are beneficial in cirrhosis, but also its functional properties, as HAS replaces the dysfunctional HSA. The role of HAS as the resuscitation fluid of choice in critically ill patients with cirrhosis, beyond the established indications for HAS use, should be addressed in future studies.
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284
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Influence of the oxidation state of the metal center on the interaction of ruthenium complex with HSA. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1659-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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285
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Ferraro G, Massai L, Messori L, Merlino A. Cisplatin binding to human serum albumin: a structural study. Chem Commun (Camb) 2016; 51:9436-9. [PMID: 25873085 DOI: 10.1039/c5cc01751c] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The reaction between cisplatin and human serum albumin (HSA) was investigated by X-ray crystallography and crystal structures of the cisplatin/HSA adduct were eventually solved for the first time. Structural data unambiguously prove that cisplatin mainly binds to His105 and Met329 side chains; additional binding sites are detected at His288, Met298, and Met548 and at His535, His67 and His247.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy.
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286
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Ali M, Kumar A, Kumar M, Pandey BN. The interaction of human serum albumin with selected lanthanide and actinide ions: Binding affinities, protein unfolding and conformational changes. Biochimie 2016; 123:117-29. [PMID: 26821345 DOI: 10.1016/j.biochi.2016.01.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 01/22/2016] [Indexed: 10/22/2022]
Abstract
Human serum albumin (HSA), the most abundant soluble protein in blood plays critical roles in transportation of biomolecules and maintenance of osmotic pressure. In view of increasing applications of lanthanides- and actinides-based materials in nuclear energy, space, industries and medical applications, the risk of exposure with these metal ions is a growing concern for human health. In present study, binding interaction of actinides/lanthanides [thorium: Th(IV), uranium: U(VI), lanthanum: La(III), cerium: Ce(III) and (IV)] with HSA and its structural consequences have been investigated. Ultraviolet-visible, Fourier transform-infrared, Raman, Fluorescence and Circular dichroism spectroscopic techniques were applied to study the site of metal ions interaction, binding affinity determination and the effect of metal ions on protein unfolding and HSA conformation. Results showed that these metal ions interacted with carbonyl (CO..:)/amide(N..-H) groups and induced exposure of aromatic residues of HSA. The fluorescence analysis indicated that the actinide binding altered the microenvironment around Trp214 in the subdomain IIA. Binding affinity of U(VI) to HSA was slightly higher than that of Th(IV). Actinides and Ce(IV) altered the secondary conformation of HSA with a significant decrease of α-helix and an increase of β-sheet, turn and random coil structures, indicating a partial unfolding of HSA. A correlation was observed between metal ion's ability to alter HSA conformation and protein unfolding. Both cationic effects and coordination ability of metal ions seemed to determine the consequences of their interaction with HSA. Present study improves our understanding about the protein interaction of these heavy ions and their impact on its secondary structure. In addition, binding characteristics may have important implications for the development of rational antidote for the medical management of health effects of actinides and lanthanides.
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Affiliation(s)
- Manjoor Ali
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India
| | - Amit Kumar
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India.
| | - Mukesh Kumar
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 85, India
| | - Badri N Pandey
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India
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287
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da Silva Fragoso VM, de Morais Coura CP, Hoppe LY, Soares MAG, Silva D, Cortez CM. Binding of Sulpiride to Seric Albumins. Int J Mol Sci 2016; 17:ijms17010059. [PMID: 26742031 PMCID: PMC4730304 DOI: 10.3390/ijms17010059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/23/2015] [Accepted: 11/30/2015] [Indexed: 01/23/2023] Open
Abstract
The aim of this work was to study the interaction of sulpiride with human serum albumin (HSA) and bovine serum albumin (BSA) through the fluorescence quenching technique. As sulpiride molecules emit fluorescence, we have developed a simple mathematical model to discriminate the quencher fluorescence from the albumin fluorescence in the solution where they interact. Sulpiride is an antipsychotic used in the treatment of several psychiatric disorders. We selectively excited the fluorescence of tryptophan residues with 290 nm wavelength and observed the quenching by titrating HSA and BSA solutions with sulpiride. Stern-Volmer graphs were plotted and quenching constants were estimated. Results showed that sulpiride form complexes with both albumins. Estimated association constants for the interaction sulpiride–HSA were 2.20 (±0.08) × 104 M−1, at 37 °C, and 5.46 (±0.20) × 104 M−1, at 25 °C. Those for the interaction sulpiride-BSA are 0.44 (±0.01) × 104 M−1, at 37 °C and 2.17 (±0.04) × 104 M−1, at 25 °C. The quenching intensity of BSA, which contains two tryptophan residues in the peptide chain, was found to be higher than that of HSA, what suggests that the primary binding site for sulpiride in albumin should be located next to the sub domain IB of the protein structure.
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Affiliation(s)
- Viviane Muniz da Silva Fragoso
- Laboratory of Innovations in Therapies, Education and Bioproducts, Oswaldo Cruz Institute/FIOCRUZ, Av. Brasil 4365, Rio de Janeiro 21045-900, Brazil.
| | - Carla Patrícia de Morais Coura
- Postgraduation in Medical Sciences, Rio de Janeiro State University, Av. Manoel de Abreu, 444, Rio de Janeiro 20550-171, Brazil.
| | - Luanda Yanaan Hoppe
- Laboratory of Innovations in Therapies, Education and Bioproducts, Oswaldo Cruz Institute/FIOCRUZ, Av. Brasil 4365, Rio de Janeiro 21045-900, Brazil.
| | - Marília Amável Gomes Soares
- Applied Mathematics, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro 20559-900, Brazil.
| | - Dilson Silva
- Postgraduation in Medical Sciences, Rio de Janeiro State University, Av. Manoel de Abreu, 444, Rio de Janeiro 20550-171, Brazil.
- Applied Mathematics, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro 20559-900, Brazil.
| | - Celia Martins Cortez
- Postgraduation in Medical Sciences, Rio de Janeiro State University, Av. Manoel de Abreu, 444, Rio de Janeiro 20550-171, Brazil.
- Applied Mathematics, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro 20559-900, Brazil.
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288
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Awasthi S, Saraswathi NT. Non-enzymatic glycation mediated structure–function changes in proteins: case of serum albumin. RSC Adv 2016. [DOI: 10.1039/c6ra08283a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Albumin, a major plasma protein with extraordinary ligand binding properties, transports various ligands ranging from drugs, hormones, fatty acids, and toxins to different tissues and organs in the body.
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Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
| | - N. T. Saraswathi
- Molecular Biophysics Lab
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
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289
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Khan AY, Suresh Kumar G. Natural isoquinoline alkaloids: binding aspects to functional proteins, serum albumins, hemoglobin, and lysozyme. Biophys Rev 2015; 7:407-420. [PMID: 28510102 DOI: 10.1007/s12551-015-0183-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/19/2015] [Indexed: 02/04/2023] Open
Abstract
The putative anticancer alkaloids berberine, palmatine, jatrorrhizine, and sanguinarine are known to bind to nucleic acids. To develop them as potential drugs for therapeutic use, their binding affinity to functional proteins and mode of transport in the circulatory system need to be clearly understood. Towards this, many studies on their binding aspects to proteins have been reported and a considerable amount of data, mostly of biophysical nature, exists in the literature. The importance of these natural isoquinoline alkaloids and the recent literature on their interaction phenomena with functional proteins, serum albumins, hemoglobin, and lysozyme are presented in this review.
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Affiliation(s)
- Asma Yasmeen Khan
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700 032, India.
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290
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Enyedy ÉA, Mészáros JP, Dömötör O, Hackl CM, Roller A, Keppler BK, Kandioller W. Comparative solution equilibrium studies on pentamethylcyclopentadienyl rhodium complexes of 2,2ʹ-bipyridine and ethylenediamine and their interaction with human serum albumin. J Inorg Biochem 2015; 152:93-103. [DOI: 10.1016/j.jinorgbio.2015.08.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/25/2015] [Accepted: 08/26/2015] [Indexed: 12/21/2022]
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291
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Otto CC, Kilbourne J, Haydel SE. Natural and ion-exchanged illite clays reduce bacterial burden and inflammation in cutaneous meticillin-resistant Staphylococcus aureus infections in mice. J Med Microbiol 2015; 65:19-27. [PMID: 26508716 DOI: 10.1099/jmm.0.000195] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Discoveries associated with antibacterial activity of hydrated clays necessitate assessments of in vivo efficacy, practical use and safety. Surface properties of clays can lead to variations in the composition and abundance of bound compounds or ions, thus affecting antibacterial activity. Since exchangeable metal ions released from the clay surface are responsible for in vitro antibacterial activity, we evaluated the in vivo antibacterial efficacy of four natural clays (one illite clay, two montmorillonite clays and one kaolinite clay) and three ion-exchanged, antibacterial clays against superficial, cutaneous meticillin-resistant Staphylococcus aureus (MRSA) infections in mice. Superficial, cutaneous wounds on the back of SKH1-Elite mice were generated and subsequently infected with MRSA. Following twice daily applications of a hydrated clay poultice to infected wounds for 7 days, we observed significant differences in the in vivo antibacterial efficacy between different types of clays. The natural and ion-exchanged illite clays performed best, as measured by bacterial load, inflammatory response and gross wound morphology with significant decreases in bacterial viability and dermatitis. Topical application of kaolinite clay was the least effective, resulting in the lowest decrease in bacterial load and exhibiting severe dermatitis. These data suggest that specific types of clays may offer a complementary and integrative strategy for topically treating MRSA and other cutaneous infections. However, since natural clays exhibit in vitro antibacterial variability and vary vastly in surface chemistries, adsorptive/absorptive characteristics and structural composition, the properties and characteristics of illite clays could aid in the development of standardized and customized aluminosilicates for topical infections.
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Affiliation(s)
- Caitlin C Otto
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Jacquelyn Kilbourne
- The Biodesign Institute Center for Infectious Diseases and Vaccinology, Arizona State University, Tempe, AZ 85287, USA
| | - Shelley E Haydel
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA.,The Biodesign Institute Center for Infectious Diseases and Vaccinology, Arizona State University, Tempe, AZ 85287, USA
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292
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Park EJ, Oh SY, Kim Y, Yoon C, Lee BS, Kim SD, Kim JS. Distribution and immunotoxicity by intravenous injection of iron nanoparticles in a murine model. J Appl Toxicol 2015; 36:414-23. [DOI: 10.1002/jat.3232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 07/27/2015] [Accepted: 08/11/2015] [Indexed: 01/01/2023]
Affiliation(s)
- Eun-Jung Park
- Myunggok Eye Research Institute; Konyang University; Daejeon Korea
| | - Seung Yun Oh
- Department of Chemical Engineering; Kwangwoon University; Seoul Korea
| | - Younghun Kim
- Department of Chemical Engineering; Kwangwoon University; Seoul Korea
| | - Cheolho Yoon
- Seoul Center; Korea Basic Science Institute; Seoul Korea
| | - Byoung-Seok Lee
- Toxicologic Pathology Center; Korea Institute of Toxicology; Daejeon Korea
| | - Sang Doo Kim
- Department of Biological Sciences; Sungkyunkwan University; Suwon Korea
| | - Jong Sung Kim
- Department of Community Health and Epidemiology, Faculty of Medicine; Dalhousie University; Halifax Canada
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293
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Sacco P, Sechi A, Trevisan A, Picotti F, Gianni R, Stucchi L, Fabbian M, Bosco M, Paoletti S, Marsich E. A silver complex of hyaluronan-lipoate (SHLS12): Synthesis, characterization and biological properties. Carbohydr Polym 2015; 136:418-26. [PMID: 26572372 DOI: 10.1016/j.carbpol.2015.09.057] [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] [Received: 07/04/2015] [Revised: 09/17/2015] [Accepted: 09/18/2015] [Indexed: 12/13/2022]
Abstract
In this study we present a novel silver complex of hyaluronan-lipoate (SHLS12) in a gel-state form. NMR analysis, conductometry and elemental analysis demonstrated stable non-covalent interactions between silver ions and the polysaccharide-lipoate backbone, whereas rheological investigations confirmed its gel-like physical-chemical behavior. Biological studies showed the ability of SHLS12 to exert a straightforward activity against different bacterial strains grown in sessile/planktonic state. The biocompatibility was also proved toward two eukaryotic cell lines. By considering both its ability to preserve antibacterial properties when exposed to the serum protein BSA and its low susceptibility to be degraded by hyaluronidase enzyme, this novel complex may be considered as a promising biomaterial for future in vivo applications.
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Affiliation(s)
- Pasquale Sacco
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, I-34127 Trieste, Italy
| | - Alessandra Sechi
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Antonia Trevisan
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Fabrizio Picotti
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Rita Gianni
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Luca Stucchi
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Matteo Fabbian
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Marco Bosco
- SIGEA Srl, AREA Science Park, loc. Padriciano 99, I-34149 Trieste, Italy
| | - Sergio Paoletti
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, I-34127 Trieste, Italy
| | - Eleonora Marsich
- Department of Medical, Surgical and Health Sciences, University of Trieste, Piazza dell'Ospitale 1, I-34129 Trieste, Italy.
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294
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Stegmayr BG. New insight in impaired binding capacity for albumin in uraemic patients. Acta Physiol (Oxf) 2015; 215:5-8. [PMID: 26123668 DOI: 10.1111/apha.12546] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- B. G. Stegmayr
- Department of Public Health and Clinical Medicine; University of Umea; Umea Sweden
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295
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Reactivity of dinuclear copper(II) complexes towards melanoma cells: Correlation with its stability, tyrosinase mimicking and nuclease activity. J Inorg Biochem 2015; 149:49-58. [DOI: 10.1016/j.jinorgbio.2015.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 05/08/2015] [Accepted: 05/11/2015] [Indexed: 12/29/2022]
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296
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Naldi M, Baldassarre M, Nati M, Laggetta M, Giannone FA, Domenicali M, Bernardi M, Caraceni P, Bertucci C. Mass spectrometric characterization of human serum albumin dimer: A new potential biomarker in chronic liver diseases. J Pharm Biomed Anal 2015; 112:169-75. [DOI: 10.1016/j.jpba.2014.12.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/30/2014] [Accepted: 12/02/2014] [Indexed: 01/08/2023]
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297
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The role of albumin receptors in regulation of albumin homeostasis: Implications for drug delivery. J Control Release 2015; 211:144-62. [PMID: 26055641 DOI: 10.1016/j.jconrel.2015.06.006] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/02/2015] [Accepted: 06/04/2015] [Indexed: 12/20/2022]
Abstract
Albumin is the most abundant protein in blood and acts as a molecular taxi for a plethora of small insoluble substances such as nutrients, hormones, metals and toxins. In addition, it binds a range of medical drugs. It has an unusually long serum half-life of almost 3weeks, and although the structure and function of albumin has been studied for decades, a biological explanation for the long half-life has been lacking. Now, recent research has unravelled that albumin-binding cellular receptors play key roles in the homeostatic regulation of albumin. Here, we review our current understanding of albumin homeostasis with a particular focus on the impact of the cellular receptors, namely the neonatal Fc receptor (FcRn) and the cubilin-megalin complex, and we discuss their importance on uses of albumin in drug delivery.
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298
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Hare DJ, Doecke JD, Faux NG, Rembach A, Volitakis I, Fowler CJ, Grimm R, Doble PA, Cherny RA, Masters CL, Bush AI, Roberts BR. Decreased plasma iron in Alzheimer's disease is due to transferrin desaturation. ACS Chem Neurosci 2015; 6:398-402. [PMID: 25588002 DOI: 10.1021/cn5003557] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Plasma iron levels are decreased in Alzheimer's disease (AD) and associated with an idiopathic anemia. We examined iron-binding plasma proteins from AD patients and healthy controls from the Australian Imaging, Biomarkers and Lifestyle (AIBL) Flagship Study of Ageing using size exclusion chromatography-inductively coupled plasma-mass spectrometry. Peak area corresponding to transferrin (Tf) saturation was directly compared to routine pathological testing. We found a significant decrease in transferrin-associated iron in AD that was missed by routine pathological tests of transferrin saturation, and that was able to discriminate between AD and controls. The AD cases showed no significant difference in transferrin concentration, only a decrease in total transferrin-bound iron. These findings support that a previously identified decrease in plasma iron levels in AD patients within the AIBL study is attributable to decreased loading of iron into transferrin, and that this subtle but discriminatory change is not observed through routine pathological testing.
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Affiliation(s)
- Dominic J. Hare
- Elemental
Bio-imaging Facility, University of Technology Sydney, Broadway, New South Wales 2007, Australia
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Department of Preventive
Medicine, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States
| | - James D. Doecke
- The Australian eHealth Research Centre, Herston, Queensland 4006, Australia
- CSIRO Preventative Health Flagship, Molecular Science
and Engineering, Parkville, Victoria 3052, Australia
| | - Noel G. Faux
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Cooperative Research
Centre for Mental Health, Carlton South, Victoria 3053, Australia
| | - Alan Rembach
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Irene Volitakis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Christopher J. Fowler
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Cooperative Research
Centre for Mental Health, Carlton South, Victoria 3053, Australia
| | - Rudolf Grimm
- Agilent Technologies, Santa Clara, California 95051, United States
| | - Philip A. Doble
- Elemental
Bio-imaging Facility, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - Robert A. Cherny
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Colin L. Masters
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Ashley I. Bush
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Blaine R. Roberts
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
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Sand KMK, Bern M, Nilsen J, Noordzij HT, Sandlie I, Andersen JT. Unraveling the Interaction between FcRn and Albumin: Opportunities for Design of Albumin-Based Therapeutics. Front Immunol 2015; 5:682. [PMID: 25674083 PMCID: PMC4306297 DOI: 10.3389/fimmu.2014.00682] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/17/2014] [Indexed: 01/08/2023] Open
Abstract
The neonatal Fc receptor (FcRn) was first found to be responsible for transporting antibodies of the immunoglobulin G (IgG) class from the mother to the fetus or neonate as well as for protecting IgG from intracellular catabolism. However, it has now become apparent that the same receptor also binds albumin and plays a fundamental role in homeostatic regulation of both IgG and albumin, as FcRn is expressed in many different cell types and organs at diverse body sites. Thus, to gain a complete understanding of the biological function of each ligand, and also their distribution in the body, an in-depth characterization of how FcRn binds and regulates the transport of both ligands is necessary. Importantly, such knowledge is also relevant when developing new drugs, as IgG and albumin are increasingly utilized in therapy. This review discusses our current structural and biological understanding of the relationship between FcRn and its ligands, with a particular focus on albumin and design of albumin-based therapeutics.
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Affiliation(s)
- Kine Marita Knudsen Sand
- Department of Biosciences, Centre for Immune Regulation (CIR), University of Oslo , Oslo , Norway ; Department of Immunology, Centre for Immune Regulation (CIR), Oslo University Hospital Rikshospitalet , Oslo , Norway
| | - Malin Bern
- Department of Biosciences, Centre for Immune Regulation (CIR), University of Oslo , Oslo , Norway ; Department of Immunology, Centre for Immune Regulation (CIR), Oslo University Hospital Rikshospitalet , Oslo , Norway
| | - Jeannette Nilsen
- Department of Immunology, Centre for Immune Regulation (CIR), Oslo University Hospital Rikshospitalet , Oslo , Norway ; Institute of Clinical Medicine, University of Oslo , Oslo , Norway
| | - Hanna Theodora Noordzij
- Department of Biosciences, Centre for Immune Regulation (CIR), University of Oslo , Oslo , Norway ; Department of Immunology, Centre for Immune Regulation (CIR), Oslo University Hospital Rikshospitalet , Oslo , Norway
| | - Inger Sandlie
- Department of Biosciences, Centre for Immune Regulation (CIR), University of Oslo , Oslo , Norway ; Department of Immunology, Centre for Immune Regulation (CIR), Oslo University Hospital Rikshospitalet , Oslo , Norway
| | - Jan Terje Andersen
- Department of Immunology, Centre for Immune Regulation (CIR), Oslo University Hospital Rikshospitalet , Oslo , Norway
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300
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Grøftehauge MK, Hajizadeh NR, Swann MJ, Pohl E. Protein-ligand interactions investigated by thermal shift assays (TSA) and dual polarization interferometry (DPI). ACTA CRYSTALLOGRAPHICA. SECTION D, BIOLOGICAL CRYSTALLOGRAPHY 2015; 71:36-44. [PMID: 25615858 PMCID: PMC4304684 DOI: 10.1107/s1399004714016617] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 07/17/2014] [Indexed: 11/10/2022]
Abstract
Over the last decades, a wide range of biophysical techniques investigating protein-ligand interactions have become indispensable tools to complement high-resolution crystal structure determinations. Current approaches in solution range from high-throughput-capable methods such as thermal shift assays (TSA) to highly accurate techniques including microscale thermophoresis (MST) and isothermal titration calorimetry (ITC) that can provide a full thermodynamic description of binding events. Surface-based methods such as surface plasmon resonance (SPR) and dual polarization interferometry (DPI) allow real-time measurements and can provide kinetic parameters as well as binding constants. DPI provides additional spatial information about the binding event. Here, an account is presented of new developments and recent applications of TSA and DPI connected to crystallography.
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Affiliation(s)
| | - Nelly R. Hajizadeh
- Chemistry Department, Durham University, South Road, Durham DH1 3LE, England
| | - Marcus J. Swann
- Farfield, Biolin Scientific, 62 Wellington Road South, Stockport, Cheshire SK1 3SU, England
| | - Ehmke Pohl
- Chemistry Department and School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, England
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