1
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Sailer J, Nagel J, Akdogan B, Jauch AT, Engler J, Knolle PA, Zischka H. Deadly excess copper. Redox Biol 2024; 75:103256. [PMID: 38959622 DOI: 10.1016/j.redox.2024.103256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 06/13/2024] [Accepted: 06/23/2024] [Indexed: 07/05/2024] Open
Abstract
Higher eukaryotes' life is impossible without copper redox activity and, literally, every breath we take biochemically demonstrates this. However, this dependence comes at a considerable price to ensure target-oriented copper action. Thereto its uptake, distribution but also excretion are executed by specialized proteins with high affinity for the transition metal. Consequently, malfunction of copper enzymes/transporters, as is the case in hereditary Wilson disease that affects the intracellular copper transporter ATP7B, comes with serious cellular damage. One hallmark of this disease is the progressive copper accumulation, primarily in liver but also brain that becomes deadly if left untreated. Such excess copper toxicity may also result from accidental ingestion or attempted suicide. Recent research has shed new light into the cell-toxic mechanisms and primarily affected intracellular targets and processes of such excess copper that may even be exploited with respect to cancer therapy. Moreover, new therapies are currently under development to fight against deadly toxic copper.
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Affiliation(s)
- Judith Sailer
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Judith Nagel
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Banu Akdogan
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Adrian T Jauch
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Jonas Engler
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Percy A Knolle
- Institute of Molecular Immunology and Experimental Oncology, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Hans Zischka
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany; Institute of Molecular Toxicology and Pharmacology, Helmholtz Munich, German Research Center for Environmental Health, Neuherberg, Germany.
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2
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Pain PK, Palit D, Shegane M, Singh RP, Manna D. Optochemical control of Cu(I) homeostasis in mammalian cells. Chem Commun (Camb) 2023; 59:2315-2318. [PMID: 36748368 DOI: 10.1039/d2cc05830h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Copper can act as a double-edged sword as it can cause fatal diseases when in excess or shortage. Precise control of copper homeostasis is maintained by a complex machinery inside cells. To overcome imbalances in copper concentration, we have developed a simple system to control the cellular copper concentration by using a photocaged chelator and light. This photocaged chelator allowed us to control cellular copper concentration in a spatiotemporal manner.
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Affiliation(s)
- Pritam Kumar Pain
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, MP, India.
| | - Dipanwita Palit
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, MP, India.
| | - Meenakshi Shegane
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, MP, India.
| | - Rajnish Pratap Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, MP, India.
| | - Debasish Manna
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, MP, India.
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3
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Yu J, Bacsa J, Fahrni CJ. Conformationally Preorganized High-Affinity Ligands for Copper Biology with Hinged and Rigid Thiophene Backbones. Inorg Chem 2023; 62:1287-1296. [PMID: 36661323 PMCID: PMC10118051 DOI: 10.1021/acs.inorgchem.2c03524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Copper-selective ligands are essential tools for probing the affinity of cuproproteins or manipulating the cellular copper availability. They also harbor significant potential as antiangiogenic agents in cancer therapy or as therapeutics to combat copper toxicity in Wilson's disease. To achieve the high Cu(I) affinities required for competing effectively with cellular cuproproteins, we recently devised a ligand design based on phosphine-sulfide-stabilized phosphine (PSP) donor motifs. Building on this design strategy, we integrated two PSP donors within preorganized ligand architectures composed of either a hinged bithiophene backbone (bithipPS) or a single rigid thiophene bridge (thipPS). Extensive characterization based on X-ray crystal structures, solution NMR data, spectrophotometric titrations, and electrochemical studies established that bithipPS adapts well to the coordination preferences of Cu(I) to form a discrete air-stable mononuclear Cu(I) complex with a dissociation constant of 4 zM. In contrast, the wider bite angle of thipPS introduces some strain upon Cu(I) coordination to yield an almost 10-fold lower affinity with a Kd of 35 zM. As revealed by ICP-MS and two-photon excitation microscopy studies with the Cu(I)-selective fluorescent probe crisp-17, both ligands are effective at removing cellular copper from live mouse fibroblasts with rapid kinetics. Altogether, the stability and redox properties of PSP-ligand-Cu(I) complexes can be effectively tuned by judicious balancing of their geometrical preorganization and conformational flexibility.
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Affiliation(s)
- Jiyao Yu
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, United States
| | - John Bacsa
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, United States
- X-ray Crystallography Center, Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Christoph J. Fahrni
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, United States
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4
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Wang J, Zhang W, Cao W, Liu K, Su S, Ma J, Li X. Selective synthesis of α- and β-glycosides of N-acetyl galactosamine using rare earth metal triflates. Front Chem 2022; 10:1029911. [DOI: 10.3389/fchem.2022.1029911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022] Open
Abstract
Structures containing galactose and GalNAc residues are specifically recognized by asialoglycoprotein receptors, allowing them to selectively internalize by hepatocytes for drug-targeting delivery. However, methods for direct synthesis of GalNAc glycosides are still challenging due to the poor participating group of 2-acetamido. Here, we develop a facile strategy to synthesize various GalNAc glycosides by employing a series of rare earth metal triflates, and the results demonstrate that both α-glycosides and β-glycosides of GalNAc can be obtained by conducting with Hf(OTf)4 and Sc(OTf)3, respectively. These applicable results indicate that any interested GalNAc-containing substrates could be prepared by this simple strategy.
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5
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Sung YS, Kerimoglu B, Ooi A, Tomat E. Aroylhydrazone Glycoconjugate Prochelators Exploit Glucose Transporter 1 (GLUT1) to Target Iron in Cancer Cells. ACS Med Chem Lett 2022; 13:1452-1458. [PMID: 36105345 PMCID: PMC9465708 DOI: 10.1021/acsmedchemlett.2c00250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/15/2022] [Indexed: 11/29/2022] Open
Abstract
Glycoconjugation strategies in anticancer drug discovery exploit the high expression of glucose transporters in malignant cells to achieve preferential uptake and hence attractive pharmacological characteristics of increased therapeutic windows and decreased unwanted toxicity. Here we present the design of glycoconjugated prochelators of aroylhydrazone AH1, an antiproliferative scavenger that targets the increased iron demand of rapidly proliferating malignant cells. The constructs feature a monosaccharide (d-glucose, d-glucosamine, or glycolytic inhibitor 2-deoxy-d-glucose) connected at the C2 or C6 position via a short linker, which masks the chelator through a disulfide bond susceptible to intracellular reduction. Cellular assays showed that the glycoconjugates rely on the GLUT1 transporter for uptake, lead to intracellular iron deprivation, and present antiproliferative activity. Ectopic overexpression of GLUT1 in malignant and normal cells increased the uptake and toxicity of the glycoconjugated prochelators, demonstrating that these compounds are well suited for targeting cells overexpressing glucose transporters and therefore for selective iron sequestration in malignant cells.
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Affiliation(s)
- Yu-Shien Sung
- Department
of Chemistry and Biochemistry, The University
of Arizona, 1306 E. University Blvd., Tucson, Arizona 85721-0041, United States
| | - Baris Kerimoglu
- Department
of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, 1703 E. Mabel St., Tucson, Arizona 85721, United
States
| | - Aikseng Ooi
- Department
of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, 1703 E. Mabel St., Tucson, Arizona 85721, United
States
| | - Elisa Tomat
- Department
of Chemistry and Biochemistry, The University
of Arizona, 1306 E. University Blvd., Tucson, Arizona 85721-0041, United States
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6
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Rai RK, Karri R, Dubey KD, Roy G. Regulation of Tyrosinase Enzyme Activity by Glutathione Peroxidase Mimics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9730-9747. [PMID: 35861245 DOI: 10.1021/acs.jafc.2c02359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydrogen peroxide plays a crucial role in the melanogenesis process by regulating the activity of the key melanin-forming enzyme tyrosinase, responsible for the browning of fruits, vegetables, and seafood. Therefore, a molecule with dual activities, both efficient tyrosinase inhibition and strong hydrogen peroxide degrading ability, may act as a promising antibrowning agent. Herein, we report highly efficient selone-based mushroom tyrosinase inhibitors 2 and 3 with remarkable glutathione peroxidase (GPx) enzyme-like activity. The presence of benzimidazole moiety enhances the tyrosinase inhibition efficiency of selone 2 (IC50 = 0.4 μM) by almost 600 times higher than imidazole-based selone 1 (IC50 = 238 μM). Interestingly, the addition of another aromatic ring to the benzimidazole moiety has led to the development of an efficient lipid-soluble tyrosinase inhibitor 3 (IC50 = 2.4 μM). The selenium center and the -NH group of 2 and 3 are extremely crucial to exhibit high GPx-like activity and tyrosinase inhibition potency. The hydrophobic moiety of the inhibitors (2 and 3) further assists them in tightly binding at the active site of the enzyme and facilitates the C═Se group to strongly coordinate with the copper ions. Inhibitor 2 exhibited excellent antibrowning and polyphenol oxidase inhibition properties in banana and apple juice extracts.
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Affiliation(s)
- Rakesh Kumar Rai
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517506, India
| | - Ramesh Karri
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Kshatresh Dutta Dubey
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Gouriprasanna Roy
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517506, India
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7
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Development, formulation, and cellular mechanism of a lipophilic copper chelator for the treatment of Wilson's disease. Int J Pharm 2021; 609:121193. [PMID: 34673167 DOI: 10.1016/j.ijpharm.2021.121193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 12/15/2022]
Abstract
Copper homeostasis is finely regulated in human to avoid any detrimental impact of free intracellular copper ions. Upon copper accumulation, biliary excretion is triggered in liver thanks to trafficking of the ATP7B copper transporter to bile canaliculi. However, in Wilson's disease this protein is mutated leading to copper accumulation. Current therapy uses Cu chelators acting extracellularly and requiring a life-long treatment with side effects. Herein, a new Cu(I) pro-chelator was encapsulated in long-term stable nanostructured lipid carriers. Cellular assays revealed that the pro-chelator protects hepatocytes against Cu-induced cell death. Besides, the cellular stresses induced by moderate copper concentrations, including protein unfolding, are counteracted by the pro-chelator. These data showed the pro-chelator efficiency to deliver intracellularly an active chelator that copes with copper stress and surpasses current and under development chelators. Although its biological activity is more mitigated, the pro-chelator nanolipid formulation led to promising results. This innovative approach is of outmost importance in the quest of better treatments for Wilson's disease.
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8
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Tripodal scaffolds with three appended imidazole thiones for Cu(I) chelation and protection from Cu-mediated oxidative stress. J Inorg Biochem 2021; 222:111518. [PMID: 34182264 DOI: 10.1016/j.jinorgbio.2021.111518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/02/2021] [Accepted: 06/12/2021] [Indexed: 11/21/2022]
Abstract
Imidazole thiones appear as interesting building blocks for Cu(I) chelation and protection against Cu-mediated oxidative stress. Therefore, a series of tripodal molecules derived from nitrilotriacetic acid appended with three imidazole thiones belonging either to histamine-like or histidine-like moieties were synthesized. These tripods demonstrate intermediate affinity between that previously measured for tripodal analogues bearing three thiol moieties such as cysteine and those grafted with three thioethers, like methionines, consistently with the thione group in the imidazole thione moiety existing as a tautomer between a thiol and a thione. The two non-alkylated tripods derived from thioimidazole, TH and TH* demonstrated three orders of magnitude larger affinity for Cu(I) (logKpH 7.4 = 14.3) than their analogues derived from N,N'-dialkylated thioimidazole TMe and TEt (logKpH 7.4 = 11-11.6). Their efficiency to inhibit Cu-mediated oxidative stress is demonstrated by several assays involving ascorbate consumption or biomolecule damages and correlates with their ability to chelate Cu(I), related to their conditional complexation constants at pH 7.4. The two non-alkylated tripods derived from thioimidazole, TH and TH* are significantly more powerful in reducing Cu-mediated oxidative stress than their analogues derived from N,N'-dialkylated thioimidazole TMe and TEt.
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9
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Ulashchik EA, Martynenko-Makaev YV, Akhlamionok TP, Melnik DM, Shmanai VV, Zatsepin TS. Synthesis of GalNAc-Oligonucleotide Conjugates Using GalNAc Phosphoramidite and Triple-GalNAc CPG Solid Support. Methods Mol Biol 2021; 2282:101-118. [PMID: 33928572 DOI: 10.1007/978-1-0716-1298-9_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
GalNAc oligonucleotide conjugates demonstrate improved potency in vivo due to selective and efficient delivery to hepatocytes in the liver via receptor-mediated endocytosis. GalNAc-siRNA and GalNAc-antisense oligonucleotides are at various stages of clinical trials, while the first two drugs were already approved by FDA. Also, GalNAc conjugates are excellent tools for functional genomics and target validation in vivo. The number of GalNAc residues in a conjugate is crucial for delivery as cooperative interaction of several GalNAc residues with asialoglycoprotein receptor enhances delivery in vitro and in vivo. Here we provide a robust protocol for the synthesis of triple GalNAc CPG solid support and GalNAc phosphoramidite, synthesis and purification of RNA conjugates with multiple GalNAc residues either to 5'-end or 3'-end and siRNA duplex formation.
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Affiliation(s)
- Egor A Ulashchik
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Yury V Martynenko-Makaev
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Tatsiana P Akhlamionok
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Denis M Melnik
- Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Vadim V Shmanai
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Timofei S Zatsepin
- Skolkovo Institute of Science and Technology, Moscow, Russia. .,Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia.
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10
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Gauthier L, Chevallet M, Bulteau F, Thépaut M, Delangle P, Fieschi F, Vivès C, Texier I, Deniaud A, Gateau C. Lectin recognition and hepatocyte endocytosis of GalNAc-decorated nanostructured lipid carriers. J Drug Target 2020; 29:99-107. [PMID: 32936032 DOI: 10.1080/1061186x.2020.1806286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Liver is the main organ for metabolism but is also subject to various pathologies, from viral, genetic, cancer or metabolic origin. There is thus a crucial need to develop efficient liver-targeted drug delivery strategies. Asialoglycoprotein receptor (ASGPR) is a C-type lectin expressed in the hepatocyte plasma membrane that efficiently endocytoses glycoproteins exposing galactose (Gal) or N-acetylgalactosamine (GalNAc). Its targeting has been successfully used to drive the uptake of small molecules decorated with three or four GalNAc, thanks to an optimisation of their spatial arrangement. Herein, we assessed the biological properties of highly stable nanostructured lipid carriers (NLC) made of FDA-approved ingredients and formulated with increasing amounts of GalNAc. Cellular studies showed that a high density of GalNAc was required to favour hepatocyte internalisation via the ASGPR pathway. Interaction studies using surface plasmon resonance and the macrophage galactose-lectin as GalNAc-recognising lectin confirmed the need of high GalNAc density for specific recognition of these NLC. This work is the first step for the development of efficient nanocarriers for prolonged liver delivery of active compounds.
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Affiliation(s)
- Laura Gauthier
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble, France, IRIG-SyMMES, University Grenoble Alpes, Grenoble, France.,CEA, LETI-DTBS, Univ. Grenoble Alpes, Grenoble, France
| | - Mireille Chevallet
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - Laboratoire de Chimie et Biologie des Métaux, Grenoble, France, CEA, IRIG-Laboratoire de Chimie et Biologie des Métaux, University Grenoble Alpes, Grenoble, France
| | - Francois Bulteau
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - Institut de Biologie Structurale, Grenoble, France, IRIG-Institut de Biologie Structurale, University Grenoble Alpes, Grenoble, France
| | - Michel Thépaut
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - Institut de Biologie Structurale, Grenoble, France, IRIG-Institut de Biologie Structurale, University Grenoble Alpes, Grenoble, France
| | - Pascale Delangle
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble, France, IRIG-SyMMES, University Grenoble Alpes, Grenoble, France
| | - Franck Fieschi
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - Institut de Biologie Structurale, Grenoble, France, IRIG-Institut de Biologie Structurale, University Grenoble Alpes, Grenoble, France
| | - Corinne Vivès
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - Institut de Biologie Structurale, Grenoble, France, IRIG-Institut de Biologie Structurale, University Grenoble Alpes, Grenoble, France
| | | | - Aurélien Deniaud
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - Laboratoire de Chimie et Biologie des Métaux, Grenoble, France, CEA, IRIG-Laboratoire de Chimie et Biologie des Métaux, University Grenoble Alpes, Grenoble, France
| | - Christelle Gateau
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble, France, IRIG-SyMMES, University Grenoble Alpes, Grenoble, France
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Monestier M, Pujol AM, Lamboux A, Cuillel M, Pignot-Paintrand I, Cassio D, Charbonnier P, Um K, Harel A, Bohic S, Gateau C, Balter V, Brun V, Delangle P, Mintz E. A liver-targeting Cu(i) chelator relocates Cu in hepatocytes and promotes Cu excretion in a murine model of Wilson's disease. Metallomics 2020; 12:1000-1008. [DOI: 10.1039/d0mt00069h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A hepatocyte-targeting chelator promotes Cu biliary excretion, hence restoring the physiological Cu detoxification pathway in a murine Wilson's disease model.
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Affiliation(s)
| | | | | | | | | | - Doris Cassio
- INSERM
- Univ. Paris Sud
- UMR U 1174
- F-91405 Orsay
- France
| | | | | | | | - Sylvain Bohic
- Inserm
- UA7
- Synchrotron Radiation for Biomedicine (STROBE)
- Grenoble
- France
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12
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Gauthier L, Varache M, Couffin AC, Lebrun C, Delangle P, Gateau C, Texier I. Quantification of Surface GalNAc Ligands Decorating Nanostructured Lipid Carriers by UPLC-ELSD. Int J Mol Sci 2019; 20:ijms20225669. [PMID: 31726778 PMCID: PMC6888163 DOI: 10.3390/ijms20225669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/07/2019] [Accepted: 11/09/2019] [Indexed: 12/16/2022] Open
Abstract
Nanoparticles have been extensively studied for drug delivery and targeting to specific organs. The functionalization of the nanoparticle surface by site-specific ligands (antibodies, peptides, saccharides) can ensure efficient recognition and binding with relevant biological targets. One of the main challenges in the development of these decorated nanocarriers is the accurate quantification of the amount of ligands on the nanoparticle surface. In this study, nanostructured lipid carriers (NLC) were functionalized with N-acetyl-D-galactosamine (GalNAc) units, known to target the asialoglycoprotein receptor (ASGPR). Different molar percentages of GalNAc-functionalized surfactant (0%, 2%, 5%, and 14%) were used in the formulation. Based on ultra-high-performance liquid chromatography separation and evaporative light-scattering detection (UPLC-ELSD), an analytical method was developed to specifically quantify the amount of GalNAc units present at the NLC surface. This method allowed the accurate quantification of GalNAc surfactant and therefore gave some insights into the structural parameters of these multivalent ligand systems. Our data show that the GalNAc decorated NLC possess large numbers of ligands at their surface and suitable distances between them for efficient multivalent interaction with the ASGPR, and therefore promising liver-targeting efficiency.
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Affiliation(s)
- Laura Gauthier
- Université Grenoble Alpes, CEA, LETI-DTBS, F-38000 Grenoble, France; (L.G.); (M.V.); (A.-C.C.)
- Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France; (C.L.); (P.D.)
| | - Mathieu Varache
- Université Grenoble Alpes, CEA, LETI-DTBS, F-38000 Grenoble, France; (L.G.); (M.V.); (A.-C.C.)
| | - Anne-Claude Couffin
- Université Grenoble Alpes, CEA, LETI-DTBS, F-38000 Grenoble, France; (L.G.); (M.V.); (A.-C.C.)
| | - Colette Lebrun
- Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France; (C.L.); (P.D.)
| | - Pascale Delangle
- Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France; (C.L.); (P.D.)
| | - Christelle Gateau
- Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France; (C.L.); (P.D.)
- Correspondence: (C.G.); (I.T.); Tel.: +33-438-786-041 (C.G.); +33-438-784-670 (I.T.)
| | - Isabelle Texier
- Université Grenoble Alpes, CEA, LETI-DTBS, F-38000 Grenoble, France; (L.G.); (M.V.); (A.-C.C.)
- Correspondence: (C.G.); (I.T.); Tel.: +33-438-786-041 (C.G.); +33-438-784-670 (I.T.)
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13
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Domergue J, Pécaut J, Proux O, Lebrun C, Gateau C, Le Goff A, Maldivi P, Duboc C, Delangle P. Mononuclear Ni(II) Complexes with a S3O Coordination Sphere Based on a Tripodal Cysteine-Rich Ligand: pH Tuning of the Superoxide Dismutase Activity. Inorg Chem 2019; 58:12775-12785. [PMID: 31545024 DOI: 10.1021/acs.inorgchem.9b01686] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The superoxide dismutase (SOD) activity of mononuclear NiII complexes, whose structures are inspired by the NiSOD, has been investigated. They have been designed with a sulfur-rich pseudopeptide ligand, derived from nitrilotriacetic acid (NTA), where the three acid functions are grafted with cysteines (L3S). Two mononuclear complexes, which exist in pH-dependent proportions, have been fully characterized by a combination of spectroscopic techniques including 1H NMR, UV-vis, circular dichroism, and X-ray absorption spectroscopy, together with theoretical calculations. They display similar square-planar S3O coordination, with the three thiolates of the three cysteine moieties from L3S coordinated to the NiII ion, together with either a water molecule at physiological pH, as [NiL3S(OH2)]-, or a hydroxo ion in more basic conditions, as [NiL3S(OH)]2-. The 1H NMR study has revealed that contrary to the hydroxo ligand, the bound water molecule is labile. The cyclic voltammogram of both complexes displays an irreversible one-electron oxidation process assigned to the NiII/NiIII redox system with Epa = 0.48 and 0.31 V versus SCE for NiL3S(OH2) and NiL3S(OH), respectively. The SOD activity of both complexes has been tested. On the basis of the xanthine oxidase assay, an IC50 of about 1 μM has been measured at pH 7.4, where NiL3S(OH2) is mainly present (93% of the NiII species), while the IC50 is larger than 100 μM at pH 9.6, where NiL3S(OH) is the major species (92% of the NiII species). Interestingly, only NiL3S(OH2) displays SOD activity, suggesting that the presence of a labile ligand is required. The SOD activity has been also evaluated under catalytic conditions at pH 7.75, where the ratio between NiL3S(OH2)/ NiL3S(OH) is about (86:14), and a rate constant, kcat = 1.8 × 105 M-1 s-1, has been measured. NiL3S(OH2) is thus the first low-molecular weight, synthetic, bioinspired Ni complex that displays catalytic SOD activity in water at physiological pH, although it does not contain any N-donor ligand in its first coordination sphere, as in the NiSOD. Overall, the data show that a key structural feature is the presence of a labile ligand in the coordination sphere of the NiII ion.
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Affiliation(s)
- Jérémy Domergue
- Univ. Grenoble Alpes, CNRS, DCM , 38000 Grenoble , France.,Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES , 38000 Grenoble , France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES , 38000 Grenoble , France
| | - Olivier Proux
- Univ. Grenoble Alpes, CNRS, OSUG , 38000 Grenoble , France
| | - Colette Lebrun
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES , 38000 Grenoble , France
| | - Christelle Gateau
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES , 38000 Grenoble , France
| | - Alan Le Goff
- Univ. Grenoble Alpes, CNRS, DCM , 38000 Grenoble , France
| | - Pascale Maldivi
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES , 38000 Grenoble , France
| | - Carole Duboc
- Univ. Grenoble Alpes, CNRS, DCM , 38000 Grenoble , France
| | - Pascale Delangle
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SYMMES , 38000 Grenoble , France
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14
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Chalana A, Karri R, Das R, Kumar B, Rai RK, Saxena H, Gupta A, Banerjee M, Jha KK, Roy G. Copper-Driven Deselenization: A Strategy for Selective Conversion of Copper Ion to Nanozyme and Its Implication for Copper-Related Disorders. ACS APPLIED MATERIALS & INTERFACES 2019; 11:4766-4776. [PMID: 30644707 DOI: 10.1021/acsami.8b16786] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Synthetic organic molecules, which can selectively convert excess intracellular copper (Cu) ions to nanozymes with an ability to protect cells from oxidative stress, are highly significant in developing therapeutic agents against Cu-related disorder like Wilson's disease. Here, we report 1,3-bis(2-hydroxyethyl)-1 H-benzoimidazole-2-selenone (1), which shows a remarkable ability to remove Cu ion from glutathione, a major cytosolic Cu-binding ligand, and thereafter converts it into copper selenide (CuSe) nanozyme that exhibits remarkable glutathione peroxidase-like activity, at cellular level of H2O2 concentration, with excellent cytoprotective effect against oxidative stress in hepatocyte. Cu-driven deselenization of 1, under physiologically relevant conditions, occurred in two steps. The activation of C═Se bond by metal ion is the crucial first step, followed by cleavage of the metal-activated C═Se bond, initiated by the OH group of N-(CH2)2OH substituent through neighboring group participation (deselenization step), resulted in the controlled synthesis of various types of Cu2-xSe nanocrystals (NCs) (nanodisks, nanocubes, and nanosheets) and tetragonal Cu3Se2 NCs, depending upon the oxidation state of the Cu ion used to activate the C═Se bond. Deselenization of 1 is highly metal-selective. Except Cu, other essential metal ions, including Mn2+, Fe2+, Co2+, Ni2+, or Zn2+, failed to produce metal selenide under identical reaction conditions. Moreover, no significant change in the expression level of Cu-metabolism-related genes, including metallothioneines MT1A, is observed in liver cells co-treated with Cu and 1, as opposed to the large increase in the concentrations of these genes observed in cells treated with Cu alone, suggesting the participation of 1 in Cu homeostasis in hepatocyte.
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15
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Su TA, Shihadih DS, Cao W, Detomasi TC, Heffern MC, Jia S, Stahl A, Chang CJ. A Modular Ionophore Platform for Liver-Directed Copper Supplementation in Cells and Animals. J Am Chem Soc 2018; 140:13764-13774. [PMID: 30351140 PMCID: PMC6465169 DOI: 10.1021/jacs.8b08014] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Copper deficiency is implicated in a variety of genetic, neurological, cardiovascular, and metabolic diseases. Current approaches for addressing copper deficiency rely on generic copper supplementation, which can potentially lead to detrimental off-target metal accumulation in unwanted tissues and subsequently trigger oxidative stress and damage cascades. Here we present a new modular platform for delivering metal ions in a tissue-specific manner and demonstrate liver-targeted copper supplementation as a proof of concept of this strategy. Specifically, we designed and synthesized an N-acetylgalactosamine-functionalized ionophore, Gal-Cu(gtsm), to serve as a copper-carrying "Trojan Horse" that targets liver-localized asialoglycoprotein receptors (ASGPRs) and releases copper only after being taken up by cells, where the reducing intracellular environment triggers copper release from the ionophore. We utilized a combination of bioluminescence imaging and inductively coupled plasma mass spectrometry assays to establish ASGPR-dependent copper accumulation with this reagent in both liver cell culture and mouse models with minimal toxicity. The modular nature of our synthetic approach presages that this platform can be expanded to deliver a broader range of metals to specific cells, tissues, and organs in a more directed manner to treat metal deficiency in disease.
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Affiliation(s)
- Timothy A. Su
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Diyala S. Shihadih
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, CA 94720
| | - Wendy Cao
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Tyler C. Detomasi
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Marie C. Heffern
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Shang Jia
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Andreas Stahl
- Department of Nutritional Sciences & Toxicology, University of California, Berkeley, CA 94720
| | - Christopher J. Chang
- Department of Chemistry, University of California, Berkeley, CA 94720
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720
- Howard Hughes Medical Institute, University of California, Berkeley, California 94720, United States
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16
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Bakthavatsalam S, Sleeper ML, Dharani A, George DJ, Zhang T, Franz KJ. Leveraging γ-Glutamyl Transferase To Direct Cytotoxicity of Copper Dithiocarbamates against Prostate Cancer Cells. Angew Chem Int Ed Engl 2018; 57:12780-12784. [PMID: 30025197 PMCID: PMC6372289 DOI: 10.1002/anie.201807582] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Indexed: 01/17/2023]
Abstract
A prodrug approach is presented to direct copper-dependent cytotoxicity to prostate cancer cells. The prochelator GGTDTC requires activation by γ-glutamyl transferase (GGT) to release the metal chelator diethyldithiocarbamate from a linker that masks its thiol reactivity and metal binding properties. In vitro studies demonstrated successful masking of copper binding as well as clean liberation of the chelator by GGT. GGTDTC was stable to non-specific degradation when incubated with a series of prostate cancer and normal cell lines, with selective release of diethyldithiocarbamate only occurring in cells with measurable GGT activity. The antiproliferative efficacy of the prochelator correlated with cellular GGT activity, with 24 h inhibitory concentrations ranging from 800 nm in prostate cancer lines 22Rv1 and LNCaP to over 15 μm in normal prostate PWR-1E cells. These findings underscore a new strategy to leverage the amplified copper metabolism of prostate cancer by conditional activation of a metal-binding pharmacophore.
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Affiliation(s)
| | - Mark L. Sleeper
- Duke University, Department of Chemistry, Box 90346, Durham, NC 27708 (USA)
| | - Azim Dharani
- Duke University, Department of Chemistry, Box 90346, Durham, NC 27708 (USA)
| | - Daniel J. George
- Division of Medical Oncology Department of Medicine Duke Cancer Institute Durham, NC 27708 (USA)
| | - Tian Zhang
- Division of Medical Oncology Department of Medicine Duke Cancer Institute Durham, NC 27708 (USA)
| | - Katherine J. Franz
- Duke University, Department of Chemistry, Box 90346, Durham, NC 27708 (USA)
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17
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Bakthavatsalam S, Sleeper ML, Dharani A, George DJ, Zhang T, Franz KJ. Leveraging γ‐Glutamyl Transferase To Direct Cytotoxicity of Copper Dithiocarbamates against Prostate Cancer Cells. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807582] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Mark L. Sleeper
- Duke University Department of Chemistry POB 90346 Durham 27708 USA
| | - Azim Dharani
- Duke University Department of Chemistry POB 90346 Durham 27708 USA
| | - Daniel J. George
- Division of Medical Oncology Department of Medicine Duke Cancer Institute Durham 27708 USA
| | - Tian Zhang
- Division of Medical Oncology Department of Medicine Duke Cancer Institute Durham 27708 USA
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18
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Morgan MT, Yang B, Harankhedkar S, Nabatilan A, Bourassa D, McCallum AM, Sun F, Wu R, Forest CR, Fahrni CJ. Stabilization of Aliphatic Phosphines by Auxiliary Phosphine Sulfides Offers Zeptomolar Affinity and Unprecedented Selectivity for Probing Biological Cu I. Angew Chem Int Ed Engl 2018; 57:9711-9715. [PMID: 29885022 PMCID: PMC6105516 DOI: 10.1002/anie.201804072] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/01/2018] [Indexed: 01/06/2023]
Abstract
Full elucidation of the functions and homeostatic pathways of biological copper requires tools that can selectively recognize and manipulate this trace nutrient within living cells and tissues, where it exists primarily as CuI . Buffered at attomolar concentrations, intracellular CuI is, however, not readily accessible to commonly employed amine and thioether-based chelators. Herein, we reveal a chelator design strategy in which phosphine sulfides aid in CuI coordination while simultaneously stabilizing aliphatic phosphine donors, producing a charge-neutral ligand with low-zeptomolar dissociation constant and 1017 -fold selectivity for CuI over ZnII , FeII , and MnII . As illustrated by reversing ATP7A trafficking in cells and blocking long-term potentiation of neurons in mouse hippocampal brain tissue, the ligand is capable of intercepting copper-dependent processes. The phosphine sulfide-stabilized phosphine (PSP) design approach, which confers resistance towards protonation, dioxygen, and disulfides, could be readily expanded towards ligands and probes with tailored properties for exploring CuI in a broad range of biological systems.
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Affiliation(s)
- M. Thomas Morgan
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Bo Yang
- Prof. Dr. C.R. Forest, Dr. B. Yang G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology 315 Ferst Drive, Atlanta, GA 30332, USA,
| | - Shefali Harankhedkar
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Arielle Nabatilan
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Daisy Bourassa
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Adam M. McCallum
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Fangxu Sun
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Ronghu Wu
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
| | - Craig R. Forest
- Prof. Dr. C.R. Forest, Dr. B. Yang G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology 315 Ferst Drive, Atlanta, GA 30332, USA,
| | - Christoph J. Fahrni
- Prof. Dr. C.J. Fahrni, Prof. Dr. R. Wu, Dr. M.T. Morgan, Dr. S Harankhedkar, A. Nabatilan, Dr. D. Bourassa, Dr. A.M. McCallum, F. Sun School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology 901 Atlantic Drive, Atlanta, GA 30332, USA,
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19
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Morgan MT, Yang B, Harankhedkar S, Nabatilan A, Bourassa D, McCallum AM, Sun F, Wu R, Forest CR, Fahrni CJ. Stabilization of Aliphatic Phosphines by Auxiliary Phosphine Sulfides Offers Zeptomolar Affinity and Unprecedented Selectivity for Probing Biological Cu
I. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- M. Thomas Morgan
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Bo Yang
- G. W. Woodruff School of Mechanical Engineering Georgia Institute of Technology 315 Ferst Drive Atlanta GA 30332 USA
| | - Shefali Harankhedkar
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Arielle Nabatilan
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Daisy Bourassa
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Adam M. McCallum
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Fangxu Sun
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Ronghu Wu
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
| | - Craig R. Forest
- G. W. Woodruff School of Mechanical Engineering Georgia Institute of Technology 315 Ferst Drive Atlanta GA 30332 USA
| | - Christoph J. Fahrni
- School of Chemistry and Biochemistry Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332 USA
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20
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Sharma VK, Osborn MF, Hassler MR, Echeverria D, Ly S, Ulashchik EA, Martynenko-Makaev YV, Shmanai VV, Zatsepin TS, Khvorova A, Watts JK. Novel Cluster and Monomer-Based GalNAc Structures Induce Effective Uptake of siRNAs in Vitro and in Vivo. Bioconjug Chem 2018; 29:2478-2488. [PMID: 29898368 DOI: 10.1021/acs.bioconjchem.8b00365] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
GalNAc conjugation is emerging as a dominant strategy for delivery of therapeutic oligonucleotides to hepatocytes. The structure and valency of the GalNAc ligand contributes to the potency of the conjugates. Here we present a panel of multivalent GalNAc variants using two different synthetic strategies. Specifically, we present a novel conjugate based on a support-bound trivalent GalNAc cluster, and four others using a GalNAc phosphoramidite monomer that was readily assembled into tri- or tetravalent designs during solid phase oligonucleotide synthesis. We compared these compounds to a clinically used trivalent GalNAc cluster both in vitro and in vivo. In vitro, cluster-based and phosphoramidite-based scaffolds show a similar rate of internalization in primary hepatocytes, with membrane binding observed as early as 5 min. All tested compounds provided potent, dose-dependent silencing, with 2-4% of injected dose recoverable from liver after 1 week. The two preassembled trivalent GalNAc clusters showed higher tissue accumulation and gene silencing relative to di-, tri-, or tetravalent GalNAc conjugates assembled via phosphoramidite chemistry.
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Affiliation(s)
| | | | | | | | | | - Egor A Ulashchik
- Institute of Physical Organic Chemistry , National Academy of Sciences of Belarus , Surganova 13 , 220072 Minsk , Belarus
| | - Yury V Martynenko-Makaev
- Institute of Physical Organic Chemistry , National Academy of Sciences of Belarus , Surganova 13 , 220072 Minsk , Belarus
| | - Vadim V Shmanai
- Institute of Physical Organic Chemistry , National Academy of Sciences of Belarus , Surganova 13 , 220072 Minsk , Belarus
| | - Timofei S Zatsepin
- Center for Translational Biomedicine , Skolkovo Institute of Science and Technology , Skolkovo , 143026 Moscow , Russia.,Department of Chemistry , Lomonosov Moscow State University , Leninskie gory 1-3 , 119992 Moscow , Russia
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21
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Faggi E, Luis SV, Alfonso I. Sensing, Transport and Other Potential Biomedical Applications of Pseudopeptides. Curr Med Chem 2018; 26:4065-4097. [PMID: 29493442 DOI: 10.2174/0929867325666180301091040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/17/2018] [Accepted: 01/20/2018] [Indexed: 11/22/2022]
Abstract
Pseudopeptides are privileged synthetic molecules built from the designed combination of peptide-like and abiotic artificial moieties. Consequently, they are benefited from the advantages of both families of chemical structures: modular synthesis, chemical and functional diversity, tailored three-dimensional structure, usually high stability in biological media and low non-specific toxicity. Accordingly, in the last years, these compounds have been used for different biomedical applications, ranging from bio-sensing, ion transport, the molecular recognition of biologically relevant species, drug delivery or gene transfection. This review highlights a selection of the most remarkable and recent advances in this field.
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Affiliation(s)
- Enrico Faggi
- Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Cientificas, Barcelona, Spain
| | - Santiago V Luis
- Department of Inorganic and Organic Chemistry, Universitat Jaume I, Castellon, Spain
| | - Ignacio Alfonso
- Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Cientificas, Barcelona, Spain
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22
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Akam EA, Utterback RD, Marcero JR, Dailey HA, Tomat E. Disulfide-masked iron prochelators: Effects on cell death, proliferation, and hemoglobin production. J Inorg Biochem 2018; 180:186-193. [PMID: 29324291 PMCID: PMC5956897 DOI: 10.1016/j.jinorgbio.2017.12.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 12/20/2017] [Accepted: 12/24/2017] [Indexed: 10/18/2022]
Abstract
The iron metabolism of malignant cells, which is altered to ensure higher acquisition and utilization, motivates the investigation of iron chelation strategies in cancer treatment. In a prochelation approach aimed at increasing intracellular specificity, disulfide reduction/activation switches are incorporated on iron-binding scaffolds resulting in intracellularly activated scavengers. Herein, this strategy is applied to several tridentate donor sets including thiosemicarbazones, aroylhydrazones and semicarbazones. The novel prochelator systems are antiproliferative in breast adenocarcinoma cell lines (MCF-7 and metastatic MDA-MB-231) and do not result in the intracellular generation of oxidative stress. Consistent with iron deprivation, the tested prochelators lead to cell-cycle arrest at the G1/S interface and induction of apoptosis. Notably, although hemoglobin-synthesizing blood cells have the highest iron need in the human body, no significant impact on hemoglobin production was observed in the MEL (murine erythroleukemia) model of differentiating erythroid cells. This study provides new information on the intracellular effects of disulfide-based prochelators and indicates aroylhydrazone (AH1-S)2 as a promising prototype of a new class of antiproliferative prochelator systems.
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Affiliation(s)
- E A Akam
- Department of Chemistry and Biochemistry, The University of Arizona, United States
| | - R D Utterback
- Department of Chemistry and Biochemistry, The University of Arizona, United States
| | - J R Marcero
- Department of Microbiology and Department of Biochemistry and Molecular Biology, University of Georgia, United States
| | - H A Dailey
- Department of Microbiology and Department of Biochemistry and Molecular Biology, University of Georgia, United States
| | - E Tomat
- Department of Chemistry and Biochemistry, The University of Arizona, United States.
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23
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Mesterházy E, Lebrun C, Jancsó A, Delangle P. A Constrained Tetrapeptide as a Model of Cu(I) Binding Sites Involving Cu4S6 Clusters in Proteins. Inorg Chem 2018; 57:5723-5731. [DOI: 10.1021/acs.inorgchem.7b02735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Edit Mesterházy
- INAC, SYMMES, Université Grenoble Alpes, CEA, CNRS, F-38000 Grenoble, France
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, Szeged H-6720, Hungary
| | - Colette Lebrun
- INAC, SYMMES, Université Grenoble Alpes, CEA, CNRS, F-38000 Grenoble, France
| | - Attila Jancsó
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, Szeged H-6720, Hungary
| | - Pascale Delangle
- INAC, SYMMES, Université Grenoble Alpes, CEA, CNRS, F-38000 Grenoble, France
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24
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Conte-Daban A, Boff B, Candido Matias A, Aparicio CNM, Gateau C, Lebrun C, Cerchiaro G, Kieffer I, Sayen S, Guillon E, Delangle P, Hureau C. A Trishistidine Pseudopeptide with Ability to Remove Both Cu Ι and Cu ΙΙ from the Amyloid-β Peptide and to Stop the Associated ROS Formation. Chemistry 2017; 23:17078-17088. [PMID: 28846165 PMCID: PMC5714062 DOI: 10.1002/chem.201703429] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 01/08/2023]
Abstract
The pseudopeptide L, derived from a nitrilotriacetic acid scaffold and functionalized with three histidine moieties, is reminiscent of the amino acid side chains encountered in the Alzheimer's peptide (Aβ). Its synthesis and coordination properties for CuΙ and CuΙΙ are described. L efficiently complex CuΙΙ in a square-planar geometry involving three imidazole nitrogen atoms and an amidate-Cu bond. By contrast, CuΙ is coordinated in a tetrahedral environment. The redox behavior is irreversible and follows an ECEC mechanism in accordance with the very different environments of the two redox states of the Cu center. This is in line with the observed resistance of the CuΙ complex to oxidation by oxygen and the CuΙΙ complex reduction by ascorbate. The affinities of L for CuΙΙ and CuΙ at physiological pH are larger than that reported for the Aβ peptide. Therefore, due to its peculiar Cu coordination properties, the ligand L is able to target both redox states of Cu, redox silence them and prevent reactive oxygen species production by the CuAβ complex. Because reactive oxygen species contribute to the oxidative stress, a key issue in Alzheimer's disease, this ligand thus represents a new strategy in the long route of finding molecular concepts for fighting Alzheimer's disease.
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Affiliation(s)
- A. Conte-Daban
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne,BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4, France
| | - B. Boff
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - A. Candido Matias
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
- Center for Natural Sciences and Humanities, Federal University of ABC – UFABC 09210-580, Santo André, SP, Brazil
| | - C. N. Montes Aparicio
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne,BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4, France
| | - C. Gateau
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - C. Lebrun
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - G. Cerchiaro
- Center for Natural Sciences and Humanities, Federal University of ABC – UFABC 09210-580, Santo André, SP, Brazil
| | - I. Kieffer
- BM30B/FAME beamline, ESRF, F-38043 Grenoble cedex 9, France
- Observatoire des Sciences de l’Univers de Grenoble, UMS 832 CNRS Université Grenoble Alpes, F-38041 Grenoble, France
| | - S. Sayen
- Institut de Chimie Moléculaire de Reims (ICMR, UMR CNRS 7312), Université de Reims Champagne-Ardenne, F-51687 Reims Cedex 2, France
| | - E. Guillon
- Institut de Chimie Moléculaire de Reims (ICMR, UMR CNRS 7312), Université de Reims Champagne-Ardenne, F-51687 Reims Cedex 2, France
| | - P. Delangle
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - C. Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne,BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4, France
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25
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Huang X, Leroux JC, Castagner B. Well-Defined Multivalent Ligands for Hepatocytes Targeting via Asialoglycoprotein Receptor. Bioconjug Chem 2016; 28:283-295. [DOI: 10.1021/acs.bioconjchem.6b00651] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xiangang Huang
- Institute
of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Jean-Christophe Leroux
- Institute
of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Bastien Castagner
- Department
of Pharmacology and Therapeutics, McGill University, 3655 Prom. Sir-William-Osler, Montréal, Québec H3G 1Y6, Canada
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26
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Modulation of hepatic copper-ATPase activity by insulin and glucagon involves protein kinase A (PKA) signaling pathway. Biochim Biophys Acta Mol Basis Dis 2016; 1862:2086-2097. [DOI: 10.1016/j.bbadis.2016.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/25/2016] [Accepted: 08/09/2016] [Indexed: 11/23/2022]
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27
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Akam EA, Tomat E. Targeting Iron in Colon Cancer via Glycoconjugation of Thiosemicarbazone Prochelators. Bioconjug Chem 2016; 27:1807-12. [PMID: 27471913 DOI: 10.1021/acs.bioconjchem.6b00332] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The implication of iron in the pathophysiology of colorectal cancer is documented at both the biochemical and epidemiological levels. Iron chelators are therefore useful molecular tools for the study and potential treatment of this type of cancer characterized by high incidence and mortality rates. We report a novel prochelation strategy that utilizes a disulfide redox switch to connect a thiosemicarbazone iron-binding unit with carbohydrate moieties targeting the increased expression of glucose transporters in colorectal cancer cells. We synthesized three glycoconjugates (GA2TC4, G6TC4, and M6TC4) with different connectivity and/or carbohydrate moieties, as well as an aglycone analog (ATC4). The sugar conjugates present increased solubility in neutral aqueous solutions, and the ester-linked conjugates M6TC4 and G6TC4 compete as effectively as d-glucose for transporter-mediated cellular uptake. The glycoconjugates show improved selectivity compared to the aglycone analog and are 6-11 times more toxic in Caco-2 colorectal adenocarcinoma cells than in normal CCD18-co colon fibroblasts.
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Affiliation(s)
- Eman A Akam
- Department of Chemistry and Biochemistry, The University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721-0041, United States
| | - Elisa Tomat
- Department of Chemistry and Biochemistry, The University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721-0041, United States
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28
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Oliveri V, Vecchio G. Prochelator strategies for site-selective activation of metal chelators. J Inorg Biochem 2016; 162:31-43. [PMID: 27297691 DOI: 10.1016/j.jinorgbio.2016.05.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 04/23/2016] [Accepted: 05/13/2016] [Indexed: 02/06/2023]
Abstract
Metal dyshomeostasis has been involved in the etiology of a host of pathologies such as Wilson's, Alzheimer's, Parkinson's, Huntington's, transfusion-related iron overload diseases and cancer. Although metal chelating agents represent a necessary therapeutic strategy in metal overload diseases, long-term use of strong chelators that are not selective, can be anticipated perturbing normal physiological functions of essential metal-requiring biomolecules. In this context, the last decade has seen a growing interest in the development of molecules, referred to as "prochelators", that have little affinity for metal ions until they are activated in response to specific stimuli. Here, we present the main strategies applied to develop safe prochelators and focus on chosen examples to provide an overview of this field to date.
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Affiliation(s)
- Valentina Oliveri
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6, 95125 Catania, Italy; Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici, C.I.R.C.M.S.B., Unità di Ricerca di Catania, 95125 Catania, Italy.
| | - Graziella Vecchio
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6, 95125 Catania, Italy; Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici, C.I.R.C.M.S.B., Unità di Ricerca di Catania, 95125 Catania, Italy
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29
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Monestier M, Charbonnier P, Gateau C, Cuillel M, Robert F, Lebrun C, Mintz E, Renaudet O, Delangle P. ASGPR-Mediated Uptake of Multivalent Glycoconjugates for Drug Delivery in Hepatocytes. Chembiochem 2016; 17:590-4. [DOI: 10.1002/cbic.201600023] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Marie Monestier
- Université Grenoble Alpes; INAC-SCIB; CEA; INAC-SCIB; 17 rue des martyrs 38054 Grenoble cedex 09 France
- Université Grenoble Alpes; DCM; CNRS; DCM; 570 rue de la chimie 38041 Grenoble cedex 09 France
| | - Peggy Charbonnier
- Université Grenoble Alpes; iRTSV-LCBM; CEA; iRTSV-LCBM; CNRS; iRTSV-LCBM; 17 rue des martyrs 38054 Grenoble cedex 09 France
| | - Christelle Gateau
- Université Grenoble Alpes; INAC-SCIB; CEA; INAC-SCIB; 17 rue des martyrs 38054 Grenoble cedex 09 France
| | - Martine Cuillel
- Université Grenoble Alpes; iRTSV-LCBM; CEA; iRTSV-LCBM; CNRS; iRTSV-LCBM; 17 rue des martyrs 38054 Grenoble cedex 09 France
| | - Faustine Robert
- Université Grenoble Alpes; INAC-SCIB; CEA; INAC-SCIB; 17 rue des martyrs 38054 Grenoble cedex 09 France
| | - Colette Lebrun
- Université Grenoble Alpes; INAC-SCIB; CEA; INAC-SCIB; 17 rue des martyrs 38054 Grenoble cedex 09 France
| | - Elisabeth Mintz
- Université Grenoble Alpes; iRTSV-LCBM; CEA; iRTSV-LCBM; CNRS; iRTSV-LCBM; 17 rue des martyrs 38054 Grenoble cedex 09 France
| | - Olivier Renaudet
- Université Grenoble Alpes; DCM; CNRS; DCM; 570 rue de la chimie 38041 Grenoble cedex 09 France
- Institut Universitaire de France; 103 boulevard Saint-Michel 75005 Paris France
| | - Pascale Delangle
- Université Grenoble Alpes; INAC-SCIB; CEA; INAC-SCIB; 17 rue des martyrs 38054 Grenoble cedex 09 France
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30
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Kandanapitiye MS, Gunathilake C, Jaroniec M, Huang SD. Biocompatible D-Penicillamine Conjugated Au Nanoparticles: Targeting Intracellular Free Copper Ions for Detoxification. J Mater Chem B 2015; 3:5553-5559. [PMID: 26213624 PMCID: PMC4510992 DOI: 10.1039/c5tb00189g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High thiophillicicity of the Au-nanoparticle (Au NP) surface leads to covalent attachment of D-penicillamine molecules to Au NPs to form biocompatible D-penicillamine conjugated Au NPs. The latter are highly water-dispersible, exhibit no cytotoxicity, and can readily penetrate the cell membrane to target intracellular free copper ions for selective copper detoxification in the presence of the other divalent essential metal ions including Zn(II), Fe(II), Mn(II), Ca(II), and Mg(II), thus opening up a new avenue for improving the efficacy and pharmacokinetics of D-penicillamine, an important clinical drug currently used to treat the copper overload-related diseases and disorders.
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Affiliation(s)
| | - Chamila Gunathilake
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, USA
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, USA
| | - Songping D. Huang
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, USA
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31
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Jullien AS, Gateau C, Lebrun C, Delangle P. Mercury Complexes with Tripodal Pseudopeptides Derived fromD-Penicillamine Favour a HgS3Coordination. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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32
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Jullien AS, Gateau C, Lebrun C, Delangle P. Pseudo-peptides Based on Methyl Cysteine or Methionine Inspired from Mets Motifs Found in the Copper Transporter Ctr1. Inorg Chem 2015; 54:2339-44. [DOI: 10.1021/ic502962d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anne-Solène Jullien
- Univ. Grenoble Alpes, INAC-SCIB, F-38000 Grenoble, France
- CEA, INAC-SCIB,
Reconnaissance Ionique et Chimie de Coordination, F-38000 Grenoble, France
| | - Christelle Gateau
- Univ. Grenoble Alpes, INAC-SCIB, F-38000 Grenoble, France
- CEA, INAC-SCIB,
Reconnaissance Ionique et Chimie de Coordination, F-38000 Grenoble, France
| | - Colette Lebrun
- Univ. Grenoble Alpes, INAC-SCIB, F-38000 Grenoble, France
- CEA, INAC-SCIB,
Reconnaissance Ionique et Chimie de Coordination, F-38000 Grenoble, France
| | - Pascale Delangle
- Univ. Grenoble Alpes, INAC-SCIB, F-38000 Grenoble, France
- CEA, INAC-SCIB,
Reconnaissance Ionique et Chimie de Coordination, F-38000 Grenoble, France
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33
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Lebrun C, Starck M, Gathu V, Chenavier Y, Delangle P. Engineering Short Peptide Sequences for Uranyl Binding. Chemistry 2014; 20:16566-73. [DOI: 10.1002/chem.201404546] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Indexed: 01/16/2023]
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34
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Jullien AS, Gateau C, Lebrun C, Kieffer I, Testemale D, Delangle P. d-Penicillamine Tripodal Derivatives as Efficient Copper(I) Chelators. Inorg Chem 2014; 53:5229-39. [DOI: 10.1021/ic5004319] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anne-Solène Jullien
- Université Grenoble Alpes, INAC,
SCIB, RICC F-38000 Grenoble, France
- CEA, INAC, SCIB, Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, F-38054 Grenoble, France
| | - Christelle Gateau
- Université Grenoble Alpes, INAC,
SCIB, RICC F-38000 Grenoble, France
- CEA, INAC, SCIB, Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, F-38054 Grenoble, France
| | - Colette Lebrun
- Université Grenoble Alpes, INAC,
SCIB, RICC F-38000 Grenoble, France
- CEA, INAC, SCIB, Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, F-38054 Grenoble, France
| | - Isabelle Kieffer
- BM30B/FAME beamline, ESRF, F-38043 Grenoble cedex 9, France
- Observatoire des Sciences de l’Univers
de Grenoble, UMS 832 CNRS Université Joseph Fourier, F-38041 Grenoble cedex 9, France
| | - Denis Testemale
- BM30B/FAME beamline, ESRF, F-38043 Grenoble cedex 9, France
- Université Grenoble Alpes, Institut
NEEL, F-38042 Grenoble, France
- CNRS, Institut NEEL, F-38042 Grenoble, France
| | - Pascale Delangle
- Université Grenoble Alpes, INAC,
SCIB, RICC F-38000 Grenoble, France
- CEA, INAC, SCIB, Laboratoire de Reconnaissance
Ionique et Chimie de Coordination, F-38054 Grenoble, France
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35
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Gateau C, Delangle P. Design of intrahepatocyte copper(I) chelators as drug candidates for Wilson's disease. Ann N Y Acad Sci 2014; 1315:30-6. [DOI: 10.1111/nyas.12379] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christelle Gateau
- Laboratoire Reconnaissance Ionique et Chimie de Coordination; Université Joseph Fourier-Grenoble 1/CEA/Institut Nanoscience et Cryogénie/SCIB; Grenoble France
| | - Pascale Delangle
- Laboratoire Reconnaissance Ionique et Chimie de Coordination; Université Joseph Fourier-Grenoble 1/CEA/Institut Nanoscience et Cryogénie/SCIB; Grenoble France
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36
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Perera VS, Wickramaratne NP, Jaroniec M, Huang SD. A Highly Efficient and Extremely Selective Intracellular Copper Detoxifying Agent Based on Nanoparticles of ZnMoS 4. J Mater Chem B 2014; 2:257-261. [PMID: 25821583 PMCID: PMC4372729 DOI: 10.1039/c3tb20962h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biocompatible ZnMoS4 NPs can selectively remove intracellular copper ions via ion-exchange rather than chelation. This strategy represents a paradigm shift in designing new-generation intracellular metal detoxifying drugs.
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Affiliation(s)
- Vindya S. Perera
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, USA
| | | | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, USA
| | - Songping D. Huang
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, USA
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37
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Cuillel M, Chevallet M, Charbonnier P, Fauquant C, Pignot-Paintrand I, Arnaud J, Cassio D, Michaud-Soret I, Mintz E. Interference of CuO nanoparticles with metal homeostasis in hepatocytes under sub-toxic conditions. NANOSCALE 2014; 6:1707-1715. [PMID: 24343273 DOI: 10.1039/c3nr05041f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Copper oxide nanoparticles (CuO-NP) were studied for their toxicity and mechanism of action on hepatocytes (HepG2), in relation to Cu homeostasis disruption. Indeed, hepatocytes, in the liver, are responsible for the whole body Cu balance and should be a major line of defence in the case of exposure to CuO-NP. We investigated the early responses to sub-toxic doses of CuO-NP and compared them to equivalent doses of Cu added as salt to see if there is a specific nano-effect related to Cu homeostasis in hepatocytes. The expression of the genes encoding the Cu-ATPase ATP7B, metallothionein 1X, heme oxygenase 1, heat shock protein 70, superoxide dismutase 1, glutamate cysteine ligase modifier subunit, metal responsive element-binding transcription factor 1 and zinc transporter 1 was analyzed by qRT-PCR. These genes are known to be involved in response to Cu, Zn and/or oxidative stresses. Except for MTF1, ATP7B and SOD1, we clearly observed an up regulation of these genes expression in CuO-NP treated cells, as compared to CuCl2. In addition, ATP7B trafficking from the Golgi network to the bile canaliculus membrane was observed in WIF-B9 cells, showing a need for Cu detoxification. This shows an increase in the intracellular Cu concentration, probably due to Cu release from endosomal CuO-NP solubilisation. Our data show that CuO-NP enter hepatic cells, most probably by endocytosis, bypassing the cellular defence mechanism against Cu, thus acting as a Trojan horse. Altogether, this study suggests that sub-toxic CuO-NP treatments induce successively a Cu overload, a Cu-Zn exchange on metallothioneins and MTF1 regulation on both Cu and Zn homeostasis.
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38
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Abstract
The measurement of reliable Cu(I) protein binding affinities requires competing reference ligands with similar binding strengths; however, the literature on such reference ligands is not only sparse but often conflicting. To address this deficiency, we have created and characterized a series of water-soluble monovalent copper ligands, MCL-1, MCL-2, and MCL-3, that form well-defined, air-stable, and colorless complexes with Cu(I) in aqueous solution. X-ray structural data, electrochemical measurements, and an extensive network of equilibrium titrations showed that all three ligands form discrete Cu(I) complexes with 1:1 stoichiometry and are capable of buffering Cu(I) concentrations between 10(-10) and 10(-17) M. As most Cu(I) protein affinities have been obtained from competition experiments with bathocuproine disulfonate or 2,2'-bicinchoninic acid, we further calibrated their Cu(I) stability constants against the MCL series. To demonstrate the application of these reagents, we determined the Cu(I) binding affinity of CusF (log K = 14.3 ± 0.1), a periplasmic metalloprotein required for the detoxification of elevated copper levels in Escherichia coli . Altogether, this interconnected set of affinity standards establishes a reliable foundation that will facilitate the precise determination of Cu(I) binding affinities of proteins and small-molecule ligands.
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Affiliation(s)
- Pritha Bagchi
- School of Chemistry and Biochemistry, Petit Institute for
Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive,
Atlanta, GA 30332, U.S.A
| | - M. Thomas Morgan
- School of Chemistry and Biochemistry, Petit Institute for
Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive,
Atlanta, GA 30332, U.S.A
| | - John Bacsa
- X-ray Crystallography Center, Department of Chemistry, Emory
University, 1515 Dieckey Drive, Atlanta, GA 30322, U.S.A
| | - Christoph J. Fahrni
- School of Chemistry and Biochemistry, Petit Institute for
Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive,
Atlanta, GA 30332, U.S.A
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39
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Jullien AS, Gateau C, Kieffer I, Testemale D, Delangle P. X-ray Absorption Spectroscopy Proves the Trigonal-Planar Sulfur-Only Coordination of Copper(I) with High-Affinity Tripodal Pseudopeptides. Inorg Chem 2013; 52:9954-61. [DOI: 10.1021/ic401206u] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Anne-Solène Jullien
- Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat
à l′Energie Atomique et aux Energies Alternatives, INAC, 17 rue des martyrs, 38054 Grenoble Cedex 9, France
| | - Christelle Gateau
- Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat
à l′Energie Atomique et aux Energies Alternatives, INAC, 17 rue des martyrs, 38054 Grenoble Cedex 9, France
| | - Isabelle Kieffer
- BM30B/FAME beamline, European Synchotron Radiation Facility (ESRF), F-38043
Grenoble Cedex 9, France
- Observatoire des Sciences de l′Université de Grenoble, UMS 832 CNRS Université Joseph Fourier, F-38041
Grenoble Cedex 9, France
| | - Denis Testemale
- BM30B/FAME beamline, European Synchotron Radiation Facility (ESRF), F-38043
Grenoble Cedex 9, France
- Institut Néel, CNRS et Université Joseph Fourier, BP 166, F-38042 Grenoble Cedex 9, France
| | - Pascale Delangle
- Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat
à l′Energie Atomique et aux Energies Alternatives, INAC, 17 rue des martyrs, 38054 Grenoble Cedex 9, France
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40
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Grosse B, Degrouard J, Jaillard D, Cassio D. Build them up and break them down: Tight junctions of cell lines expressing typical hepatocyte polarity with a varied repertoire of claudins. Tissue Barriers 2013; 1:e25210. [PMID: 24665408 PMCID: PMC3783225 DOI: 10.4161/tisb.25210] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 05/28/2013] [Accepted: 05/29/2013] [Indexed: 12/14/2022] Open
Abstract
Tight junctions (TJs) of cells expressing simple epithelial polarity have been extensively studied, but less is known about TJs of cells expressing complex polarity. In this paper we analyzed, TJs of four different lines, that form bile canaliculi (BC) and express typical hepatocyte polarity; WIF-B9, 11–3, Can 3–1, Can 10. Striking differences were observed in claudin expression. None of the cell lines produced claudin-1. WIF-B9 and 11–3 expressed only claudin-2 while Can 3–1 and Can 10 expressed claudin-2,-3,-4,-5. TJs of these two classes of lines differed in their ultra-stucture, paracellular permeability, and robustness. Lines expressing a large claudin repertoire, especially Can 10, had complex and efficient TJs, that were maintained when cells were depleted in calcium. Inversely, TJs of WIF-B9 and 11–3 were leaky, permissive and dismantled by calcium depletion. Interestingly, we found that during the polarization process, TJ proteins expressed by all lines were sequentially settled in a specific order: first occludin, ZO-1 and cingulin, then JAM-A and ZO-2, finally claudin-2. Claudins expressed only in Can lines were also sequentially settled: claudin-3 was the first settled. Inhibition of claudin-3 expression delayed BC formation in Can10 and induced the expression of simple epithelial polarity. These results highlight the role of claudins in the settlement and the efficiency of TJs in lines expressing typical hepatocyte polarity. Can 10 seems to be the most promising of these lines because of its claudin repertoire near that of hepatocytes and its capacity to form extended tubular BC sealed by efficient TJs.
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Affiliation(s)
- Brigitte Grosse
- Inserm, UMR-S 757; Orsay, France ; Université Paris-Sud; Orsay, France
| | | | | | - Doris Cassio
- Inserm, UMR-S 757; Orsay, France ; Université Paris-Sud; Orsay, France
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41
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Chang TM, Tomat E. Disulfide/thiol switches in thiosemicarbazone ligands for redox-directed iron chelation. Dalton Trans 2013; 42:7846-9. [PMID: 23591852 DOI: 10.1039/c3dt50824b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A disulfide bond is incorporated in the scaffold of thiosemicarbazone iron chelators as a reduction/activation switch. Following reduction, thiol-containing ligands stabilize iron ions in their trivalent oxidation state. The antiproliferative activity of the new chelating systems is assessed in human cancer cell lines and in normal tissue.
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Affiliation(s)
- Tsuhen M Chang
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson, AZ 85721-0041, USA
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42
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Franz KJ. Clawing back: broadening the notion of metal chelators in medicine. Curr Opin Chem Biol 2013; 17:143-9. [PMID: 23332666 DOI: 10.1016/j.cbpa.2012.12.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 12/20/2012] [Accepted: 12/26/2012] [Indexed: 02/04/2023]
Abstract
The traditional notion of chelation therapy is the administration of a chemical agent to remove metals from the body. But formation of a metal-chelate can have biological ramifications that are much broader than metal elimination. Exploring these other possibilities could lead to pharmacological interventions that alter the concentration, distribution, or reactivity of metals in targeted ways for therapeutic benefit. This review highlights recent examples that showcase four general strategies of using principles of metal chelation in medicinal contexts beyond the traditional notion of chelation therapy. These strategies include altering metal biodistribution, inhibiting specific metalloenzymes associated with disease, enhancing the reactivity of a metal complex to promote cytotoxicity, and conversely, passivating the reactivity of metals by site-activated chelation to prevent cytotoxicity.
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Affiliation(s)
- Katherine J Franz
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27708, USA.
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Perera VS, Liu H, Wang ZQ, Huang SD. Cell Permeable Au@ZnMoS 4 Core-Shell Nanoparticles: Towards a Novel Cellular Copper Detoxifying Drug for Wilson's Disease. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2013; 25:4703-4709. [PMID: 25698847 PMCID: PMC4331036 DOI: 10.1021/cm402147u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A layer-by-layer self-assembly method leads to the formation of Au@ZnMoS4 core-shell nanoparticles (NPs). The PEGylated Au@ZnMoS4 NPs are highly water-dispersible, exhibit no cytotoxicity and can penetrate the cell membrane to selectively remove copper(I) ions from HepG2 cells in the presence of other endogenous and biologically essential metal ions including Mg(II), Ca(II), Mn(II) and Fe(II), demonstrating their potential as a novel intracellular copper detoxifying agent.
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