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Moreira DA, Santos SD, Leiro V, Pêgo AP. Dendrimers and Derivatives as Multifunctional Nanotherapeutics for Alzheimer's Disease. Pharmaceutics 2023; 15:pharmaceutics15041054. [PMID: 37111540 PMCID: PMC10140951 DOI: 10.3390/pharmaceutics15041054] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/15/2023] [Accepted: 03/18/2023] [Indexed: 04/29/2023] Open
Abstract
Alzheimer's disease (AD) is the most prevalent form of dementia. It affects more than 30 million people worldwide and costs over US$ 1.3 trillion annually. AD is characterized by the brain accumulation of amyloid β peptide in fibrillar structures and the accumulation of hyperphosphorylated tau aggregates in neurons, both leading to toxicity and neuronal death. At present, there are only seven drugs approved for the treatment of AD, of which only two can slow down cognitive decline. Moreover, their use is only recommended for the early stages of AD, meaning that the major portion of AD patients still have no disease-modifying treatment options. Therefore, there is an urgent need to develop efficient therapies for AD. In this context, nanobiomaterials, and dendrimers in particular, offer the possibility of developing multifunctional and multitargeted therapies. Due to their intrinsic characteristics, dendrimers are first-in-class macromolecules for drug delivery. They have a globular, well-defined, and hyperbranched structure, controllable nanosize and multivalency, which allows them to act as efficient and versatile nanocarriers of different therapeutic molecules. In addition, different types of dendrimers display antioxidant, anti-inflammatory, anti-bacterial, anti-viral, anti-prion, and most importantly for the AD field, anti-amyloidogenic properties. Therefore, dendrimers can not only be excellent nanocarriers, but also be used as drugs per se. Here, the outstanding properties of dendrimers and derivatives that make them excellent AD nanotherapeutics are reviewed and critically discussed. The biological properties of several dendritic structures (dendrimers, derivatives, and dendrimer-like polymers) that enable them to be used as drugs for AD treatment will be pointed out and the chemical and structural characteristics behind those properties will be analysed. The reported use of these nanomaterials as nanocarriers in AD preclinical research is also presented. Finally, future perspectives and challenges that need to be overcome to make their use in the clinic a reality are discussed.
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Affiliation(s)
- Débora A Moreira
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- FEUP-Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Sofia D Santos
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Victoria Leiro
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Ana P Pêgo
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal
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Fan X, Lin D, Xu Z, Li Y. Pd/Cu bimetallic catalyst immobilized on PEI capped cellulose-polyamidoamine dendrimer: Synthesis, characterization, and application in Sonogashira reactions for the synthesis of alkynes and benzofurans. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Controlled Synthesis of Au 25 Superatom Using a Dendrimer Template. Molecules 2022; 27:molecules27113398. [PMID: 35684336 PMCID: PMC9182415 DOI: 10.3390/molecules27113398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 02/05/2023] Open
Abstract
Superatoms are promising materials for their potential in elemental substitution and as new building blocks. Thus far, various synthesis methods of thiol-protected Au clusters including an Au25 superatom have been investigated. However, previously reported methods were mainly depending on the thermodynamic stability of the aimed clusters. In this report, a synthesis method for thiol-protected Au clusters using a dendrimers template is proposed. In this method, the number of Au atoms was controlled by the stepwise complexation feature of a phenylazomethine dendrimer. Therefore, synthesis speed was increased compared with the case without the dendrimer template. Hybridization for the Au25 superatoms was also achieved using the complexation control of metals.
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4
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Canonico B, Cangiotti M, Montanari M, Papa S, Fusi V, Giorgi L, Ciacci C, Ottaviani MF, Staneva D, Grabchev I. Characterization of a fluorescent 1,8-naphthalimide-functionalized PAMAM dendrimer and its Cu(ii) complexes as cytotoxic drugs: EPR and biological studies in myeloid tumor cells. Biol Chem 2021; 403:345-360. [PMID: 34883001 DOI: 10.1515/hsz-2021-0388] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/18/2021] [Indexed: 01/18/2023]
Abstract
The activity and interacting ability of a polyamidoamine (PAMAM) dendrimer modified with 4-N-methylpiperazine-1,8-naphthalimide units (termed D) and complexed by Cu(ii) ions, towards healthy and cancer cells were studied. Comparative electron paramagnetic resonance (EPR) studies of the Cu(ii)-D complex are presented: coordination mode, chemical structure, flexibility and stability of these complexes, in the absence and presence of myeloid cancer cells and peripheral blood mononuclear cells (PBMC). The interactions of Cu(ii) ions in the biological media at different equilibrium times were studied, highlighting different stability and interacting conditions with the cells. Furthermore, flow cytometry and confocal analysis, trace the peculiar properties of the dendrimers in PBMC and U937 cells. Indeed, a new probe (Fly) was used as a potential fluorescent tool for biological imaging of Cu(ii). The study highlights that dendrimer and, mainly, the Cu(ii) metallodendrimer are cytotoxic agents for the cells, specifically for U937 tumor cells, inducing mitochondrial dysfunction, ROS increase and lysosome involvement. The metallodendrimer shows antitumor selectivity, fewer affecting healthy PBMC, inducing a massive apoptotic cell death on U937 cells, in line with the high stability of this complex, as verified by EPR studies. The results underline the potentiality of this metallodendrimer to be used as anticancer drug.
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Affiliation(s)
- Barbara Canonico
- Department of Biomolecular Sciences (DISB), University of Urbino, I-61029 Urbino, Italy
| | - Michela Cangiotti
- Department of Pure and Applied Sciences (DiSPeA), University of Urbino, I-61029 Urbino, Italy
| | - Mariele Montanari
- Department of Biomolecular Sciences (DISB), University of Urbino, I-61029 Urbino, Italy
| | - Stefano Papa
- Department of Biomolecular Sciences (DISB), University of Urbino, I-61029 Urbino, Italy
| | - Vieri Fusi
- Department of Pure and Applied Sciences (DiSPeA), University of Urbino, I-61029 Urbino, Italy
| | - Luca Giorgi
- Department of Pure and Applied Sciences (DiSPeA), University of Urbino, I-61029 Urbino, Italy
| | - Caterina Ciacci
- Department of Biomolecular Sciences (DISB), University of Urbino, I-61029 Urbino, Italy
| | | | - Desislava Staneva
- University of Chemical Technology and Metallurgy, BG-1756 Sofia, Bulgaria
| | - Ivo Grabchev
- Sofia University "St. Kliment Ohridski", Faculty of Medicine, BG-1407 Sofia, Bulgaria
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5
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Synthesis and characterization of fluorescent PAMAM dendrimer modified with 1,8-naphthalimide units and its Cu(II) complex designed for specific biomedical application. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113312] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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New adsorbent based on zeolite modified with hyperbranched polyesterpolybenzoylthiocarbamate. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3135-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Carone M, Moreno S, Cangiotti M, Ottaviani MF, Wang P, Carloni R, Appelhans D. DOTA Glycodendrimers as Cu(II) Complexing Agents and Their Dynamic Interaction Characteristics toward Liposomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12816-12829. [PMID: 32993292 PMCID: PMC8015221 DOI: 10.1021/acs.langmuir.0c01776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Copper (Cu)(II) ions, mainly an excess amount, play a negative role in the course of several diseases, like cancers, neurodegenerative diseases, and the so-called Wilson disease. On the contrary, Cu(II) ions are also capable of improving anticancer drug efficiency. For this reason, it is of great interest to study the interacting ability of Cu(II)-nanodrug and Cu(II)-nanocarrier complexes with cell membranes for their potential use as nanotherapeutics. In this study, the complex interaction between 1,4,7,10-tetraazacyclododecan-N,N',N'',N'''-tetraacetic acid (DOTA)-functionalized poly(propyleneimine) (PPI) glycodendrimers and Cu(II) ions and/or neutral and anionic lipid membrane models using different liposomes is described. These interactions were investigated via dynamic light scattering (DLS), ζ-potential (ZP), electron paramagnetic resonance (EPR), fluorescence anisotropy, and cryogenic transmission electron microscopy (cryo-TEM). Structural and dynamic information about the PPI glycodendrimer and its Cu(II) complexes toward liposomes was obtained via EPR. At the binding site Cu-N2O2 coordination prevails, while at the external interface, this coordination partially weakens due to competitive dendrimer-liposome interactions, with only small liposome structural perturbation. Fluorescence anisotropy was used to evaluate the membrane fluidity of both the hydrophobic and hydrophilic parts of the lipid bilayer, while DLS and ZP allowed us to determine the distribution profile of the nanoparticle (PPI glycodendrimer and liposomes) size and surface charge, respectively. From this multitechnique approach, it is deduced that DOTA-PPI glycodendrimers selectively extract Cu(II) ions from the bioenvironment, while these complexes interact with the liposome surface, preferentially with even more negatively charged liposomes. However, these complexes are not able to cross the cell membrane model and poorly perturb the membrane structure, showing their potential for biomedical use.
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Affiliation(s)
- Marianna Carone
- Department
of Chemistry and Biochemistry, University
of Bern, 3012 Bern, Switzerland
| | - Silvia Moreno
- Leibniz
Institute of Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany
| | - Michela Cangiotti
- Department
of Pure and Applied Sciences, Università
degli studi di Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Maria Francesca Ottaviani
- Department
of Pure and Applied Sciences, Università
degli studi di Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Peng Wang
- Leibniz
Institute of Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany
| | - Riccardo Carloni
- Department
of Pure and Applied Sciences, Università
degli studi di Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Dietmar Appelhans
- Leibniz
Institute of Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany
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8
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Organic solvent nanofiltration membrane with improved permeability by in-situ growth of metal-organic frameworks interlayer on the surface of polyimide substrate. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117387] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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9
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Canonico B, Carloni R, Sanz del Olmo N, Papa S, Nasoni MG, Fattori A, Cangiotti M, de la Mata FJ, Ottaviani MF, García-Gallego S. Fine-Tuning the Interaction and Therapeutic Effect of Cu(II) Carbosilane Metallodendrimers in Cancer Cells: An In Vitro Electron Paramagnetic Resonance Study. Mol Pharm 2020; 17:2691-2702. [DOI: 10.1021/acs.molpharmaceut.0c00396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Barbara Canonico
- Department of Biomolecular Science (DiSB), University of Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Riccardo Carloni
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Natalia Sanz del Olmo
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry “Andrés M. del Río” (IQAR), University of Alcalá, Madrid 28871, Spain
| | - Stefano Papa
- Department of Biomolecular Science (DiSB), University of Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Maria Gemma Nasoni
- Department of Biomolecular Science (DiSB), University of Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Alberto Fattori
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, Urbino 61029, Italy
| | - Michela Cangiotti
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, Urbino 61029, Italy
| | - F. Javier de la Mata
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry “Andrés M. del Río” (IQAR), University of Alcalá, Madrid 28871, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Institute Ramón y Cajal for Health Research (IRYCIS), Madrid 28034, Spain
| | | | - Sandra García-Gallego
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry “Andrés M. del Río” (IQAR), University of Alcalá, Madrid 28871, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Institute Ramón y Cajal for Health Research (IRYCIS), Madrid 28034, Spain
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10
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Synthesis of imidazolium-terminated carbosilane dendrimers and dendrons and study of their interactions with a cell membrane model. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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The Role of Branch Cell Symmetry and Other Critical Nanoscale Design Parameters in the Determination of Dendrimer Encapsulation Properties. Biomolecules 2020; 10:biom10040642. [PMID: 32326311 PMCID: PMC7226492 DOI: 10.3390/biom10040642] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/27/2020] [Accepted: 03/21/2020] [Indexed: 12/23/2022] Open
Abstract
This article reviews progress over the past three decades related to the role of dendrimer-based, branch cell symmetry in the development of advanced drug delivery systems, aqueous based compatibilizers/solubilizers/excipients and nano-metal cluster catalysts. Historically, it begins with early unreported work by the Tomalia Group (i.e., The Dow Chemical Co.) revealing that all known dendrimer family types may be divided into two major symmetry categories; namely: Category I: symmetrical branch cell dendrimers (e.g., Tomalia, Vögtle, Newkome-type dendrimers) possessing interior hollowness/porosity and Category II: asymmetrical branch cell dendrimers (e.g., Denkewalter-type) possessing no interior void space. These two branch cell symmetry features were shown to be pivotal in directing internal packing modes; thereby, differentiating key dendrimer properties such as densities, refractive indices and interior porosities. Furthermore, this discovery provided an explanation for unimolecular micelle encapsulation (UME) behavior observed exclusively for Category I, but not for Category II. This account surveys early experiments confirming the inextricable influence of dendrimer branch cell symmetry on interior packing properties, first examples of Category (I) based UME behavior, nuclear magnetic resonance (NMR) protocols for systematic encapsulation characterization, application of these principles to the solubilization of active approved drugs, engineering dendrimer critical nanoscale design parameters (CNDPs) for optimized properties and concluding with high optimism for the anticipated role of dendrimer-based solubilization principles in emerging new life science, drug delivery and nanomedical applications.
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12
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Gataulina AR, Sidorov PO, Yurtaeva SV, Prytkov VA, Ulakhovich NA, Kutyrev GA, Kutyreva MP. Ionization and Complexing Properties of Hyperbranched Polyester Poly[3-(2-aminoethyl)amino)]propionate. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220030159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Yamamoto K, Imaoka T, Tanabe M, Kambe T. New Horizon of Nanoparticle and Cluster Catalysis with Dendrimers. Chem Rev 2019; 120:1397-1437. [DOI: 10.1021/acs.chemrev.9b00188] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
- PRESTO-JST, Kawaguchi 332-0012, Japan
| | - Makoto Tanabe
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Tetsuya Kambe
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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15
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Sanz Del Olmo N, Carloni R, Bajo AM, Ortega P, Fattori A, Gómez R, Ottaviani MF, García-Gallego S, Cangiotti M, de la Mata FJ. Insight into the antitumor activity of carbosilane Cu(ii)-metallodendrimers through their interaction with biological membrane models. NANOSCALE 2019; 11:13330-13342. [PMID: 31271405 DOI: 10.1039/c9nr03313k] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Current cancer therapies present serious drawbacks including severe side-effects and development of drug resistance. Strategies based on nanosized metallodrugs combine the structural diversity and non-classical modes of action of metal complexes with the selectivity arising from the unique interaction of nanoparticles with biological membranes. A new family of water-soluble copper(ii) carbosilane metallodendrimers was synthesized and characterized as a nanotechnological alternative to current therapies. The interactions occurring over time between the dendrimers, at different generations (G0 to G2) and with different Cu(ii) counter-ions (nitrate vs. chloride), and cell-membrane models (cethyl-trimethylammonium bromide (CTAB) micelles and lecithin liposomes) were investigated using a computer-aided analysis of the electron paramagnetic resonance (EPR) spectra. The EPR analysis provided structural and dynamical information on the systems indicating that the increase in generation and the change of the Cu(ii) contra-ion - from nitrate to chloride - produce an increased relative amount and strength of interaction of the dendrimer with the model membranes. Interestingly, the stabilization effect produced a lower toxicity towards cancer cells. The cytotoxic effect of Cu(ii) metallodendrimers was verified by an in vitro screening in a selection of tumor cell lines, revealing the impact of multivalency on the effectivity and selectivity of the metallodrugs. As a proof-of-concept, first-generation dendrimer G1-Cu(ONO2)2 was selected for in-depth in vitro and in vivo antitumor evaluation towards resistant prostate cancer. The Cu(ii)-metallodendrimers produced a significant tumor size reduction with no signs of toxicity during the experiment, confirming their promising potential as anticancer metallodrugs.
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Affiliation(s)
- Natalia Sanz Del Olmo
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry "Andrés M. del Río" (IQAR), University of Alcalá, Madrid, Spain.
| | - Riccardo Carloni
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Urbino, Italy.
| | - Ana M Bajo
- Department of Biology of Systems, Biochemistry and Molecular Biology Unit, University of Alcalá, Madrid, Spain
| | - Paula Ortega
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry "Andrés M. del Río" (IQAR), University of Alcalá, Madrid, Spain. and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain and Institute Ramón y Cajal for Health Research (IRYCIS), Spain
| | - Alberto Fattori
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Urbino, Italy.
| | - Rafael Gómez
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry "Andrés M. del Río" (IQAR), University of Alcalá, Madrid, Spain. and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain and Institute Ramón y Cajal for Health Research (IRYCIS), Spain
| | | | - Sandra García-Gallego
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry "Andrés M. del Río" (IQAR), University of Alcalá, Madrid, Spain. and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain and Institute Ramón y Cajal for Health Research (IRYCIS), Spain
| | - Michela Cangiotti
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Urbino, Italy.
| | - F Javier de la Mata
- Department of Organic and Inorganic Chemistry, and Research Institute in Chemistry "Andrés M. del Río" (IQAR), University of Alcalá, Madrid, Spain. and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain and Institute Ramón y Cajal for Health Research (IRYCIS), Spain
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Dou X, Meints GA, Sedaghat-Herati R. New Insights into the Interactions of a DNA Oligonucleotide with mPEGylated-PAMAM by Circular Dichroism and Solution NMR. J Phys Chem B 2019; 123:666-674. [PMID: 30562015 DOI: 10.1021/acs.jpcb.8b08517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Dendrimers are well-defined, highly branched, synthetic three-dimensional molecules with a large number of reactive end groups. PAMAM dendrimers form stable complexes with DNA chemistries and constitute an important class of nonviral, cationic vectors in gene delivery. The aim of this study is to examine the interactions of a 12 bp DNA oligonucletide with PAMAM-G2 and mPEG- b-PAMAM-G3 having eight surface amine groups under physiological conditions, using constant DNA concentration but varying dendrimer concentration. 1D 31P NMR, 2D NOESY, and CD spectroscopic methods were employed to investigate the interactions between the dendrimer and the DNA. The CD experiments carried out with a constant DNA concentration of 25 μM and dendrimer concentrations from 0 to 100 μM indicated minimal change to the chirality of the DNA for both types of dendrimers. While the PAMAM-G2 dendrimer caused aggregation of the majority of the DNA, the 2D NMR data of the DNA with an mPEG- b-PAMAM-G3 dendrimer indicated general broadening of the 1D 31P peaks from the DNA phosphates, a small number of 1H chemical shift perturbations (CSPs), and reduction of specific 1H-1H NOE intensities. These data suggest there is minimal structural alteration of the DNA in the complex and indicate preferential binding of the dendrimer to the central AATT region of the DNA sequence. The results herein are the first such results demonstrating a soluble DNA complex with the mPEG- b-PAMAM-G3 dendrimer analyzed by multidimensional NMR.
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Affiliation(s)
- Xiaozheng Dou
- Department of Chemistry , Missouri State University , Springfield , Missouri 65897 , United States
| | - Gary A Meints
- Department of Chemistry , Missouri State University , Springfield , Missouri 65897 , United States
| | - Reza Sedaghat-Herati
- Department of Chemistry , Missouri State University , Springfield , Missouri 65897 , United States
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17
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Tang YH, Cangiotti M, Kao CL, Ottaviani MF. EPR Characterization of Copper(II) Complexes of PAMAM-Py Dendrimers for Biocatalysis in the Absence and Presence of Reducing Agents and a Spin Trap. J Phys Chem B 2017; 121:10498-10507. [PMID: 29091451 DOI: 10.1021/acs.jpcb.7b09464] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Polyamidoamine (PAMAM) dendrimers at different generations (from G2 to G6) were functionalized with pyridine (Py) groups at the external surface, and their complexation behavior with Cu(II) at increasing molar ratios between the ions and the Py groups was analyzed in the absence and presence of reducing agents and a spin trap. These Cu(II)-dendrimer complexes may be used as antitumor and antiamyloidogenesis drugs, similarly to other Cu(II)-dendrimer complexes, and as biocatalysts. Indeed, they have revealed to selectively catalyze molecular oxygen reduction to generate reactive oxygen species (ROS). A computer-aided electron paramagnetic resonance (EPR) study of these complexes allowed us to identify different complexes by increasing the Cu(II)/Py molar ratio for the different generations. Binuclear EPR-silent complexes were formed at the highest generations. The differently complexed Cu(II) ions showed a different capability to be reduced, starting from the most exposed at the dendrimer surface bearing a stable Cu(II)-Py2 coordination. Cu(II)-G5 showed peculiar structural properties which probably favored its activity as biocatalyst. The spin trap was able to capture hydroxyl radicals, which became clearly EPR visible after all Cu(II) ions were reduced to Cu(I). This method may be used as a platform to study interactions of Cu(II) in nanosized macromolecules for biomedical purposes, mainly in biocatalysis involving redox reactions and formation of ROS.
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Affiliation(s)
- Yi-Hsuan Tang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , 100 Shih-Chuan first Road, Kaohsiung 80708, Taiwan
| | - Michela Cangiotti
- Department of Pure and Applied Sciences, University of Urbino , Via Ca' Le Suore 2/4, 61029 Urbino, Italy
| | - Chai-Lin Kao
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , 100 Shih-Chuan first Road, Kaohsiung 80708, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital , Kaohsiung 80708, Taiwan.,Department of Chemistry, National Sun Yat-sen University , 70 Lienhai Rd., Kaohsiung 80424, Taiwan
| | - Maria Francesca Ottaviani
- Department of Pure and Applied Sciences, University of Urbino , Via Ca' Le Suore 2/4, 61029 Urbino, Italy
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Barsi D, Borsacchi S, Calucci L, Tarantino A, Pinzino C, Bertoldo M. Tuning the functionalization degree of amylose and amylopectin with photochromic spiropyran by CuAAc reaction. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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19
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Kutyreva MP, Gataulina AR, Kutyrev GA, Ulakhovich NA, Surnova AV, Yurtaeva SV. Hyperbranched polyester poly(3-diethylamino)propionates and their copper(ii) complexes. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1206-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Kutyreva MP, Gataulina AR, Kutyrev GA, Ulakhovich NA, Newman T, Khasanova EM, Bondar OV, Yurtaeva SV, Ziganshina SA, Khaldeeva EV. Hyperbranched polyester poly(3-diethylaminepropionate)s and their copper(II) complexes: Synthesis, characterization and biological investigation. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Epure V, Hamciuc V, Pricop L, Pinteala M, Airinei A, Harabagiu V, Simionescu BC, Enescu D, Perichaud A. Piperazinyl-Modified Polysiloxanes and their Cu (II) Complexes. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008307073724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The paper deals with the synthesis and physico-chemical characterization of polydimethylsiloxanes modified with piperazinyl ligand groups and of their Cu(II) complexes. 1H NMR, Fourier transform infrared, UV-VIS and electron spin resonance spectroscopy were used to follow the structure of the coordination compounds. Three different types of copper bonding to the macromolecular ligand were identified. An uniform distribution of Cu(II) cations into the polymeric material was evidenced by an environmental scanning electron microscopy/microanalysis by energy dispersive spectrometry combined method.
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Affiliation(s)
- Virginia Epure
- 'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | - Viorica Hamciuc
- 'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | - Lucia Pricop
- 'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | - Mariana Pinteala
- 'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | - Anton Airinei
- 'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | - Valeria Harabagiu
- 'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | | | - Daniela Enescu
- Department of Macromolecules, 'Gh. Asachi' Technical University, 700050 Iasi, Romania
| | - Alain Perichaud
- Laboratoire de Chimie Macromoléculaire, Service 312, UMR-CNRS 6171, Marseille, France
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22
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Gerrans K, Luhrs A, Feider C, Margerum LD. Silica nanoparticles functionalized with polyamidoamine (PAMAM) dendrimers as platforms for photoluminescence (PL) sensing of copper and cyanide ions. J Colloid Interface Sci 2016; 470:276-283. [PMID: 26962978 DOI: 10.1016/j.jcis.2016.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/02/2016] [Accepted: 03/03/2016] [Indexed: 02/09/2023]
Abstract
Functionalized nanoparticles for photoluminescence (PL) applications are a promising technology for biomedical imaging and as sensors for small molecules. This work presents a new method to modify silica nanoparticles (SNP) using the bifunctional linker 1,1'-carbonyldiimidazole (CDI) with a series of polyamidoamine (PAMAM) dendrimer molecules followed by grafting of fluorescein isothiocyanate (FITC) or rhodamine B isothiocyanate (RITC) to create platforms for photoluminescence (PL) sensors. A dendrimer size and charge-variable response to only copper(II) ions confirmed the prediction of a selective turn-off sensor via proximity quenching. Both dye density and Cu(2+) quenching efficiency peaked with SNP-dendrimer generation 4 (64 terminal amines). In addition, changing the terminal dendrimer arms to carboxylic acid end groups increased the copper quenching suggesting that more metal ion binding sites were created in close proximity to the dyes. Of the small anions tested for a turn-off sensor, only cyanide ion fully restored the PL when reaching a 2:1 CN(-):Cu(2+) ratio, while EDTA was not as effective at the same ratio. Therefore, dendrimer size and surface charge on the nanoparticles controlled the dye loading and copper quenching efficiency, while creating multiple binding sites for cyanide over other metal binding anions.
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Affiliation(s)
- Kateryna Gerrans
- Department of Chemistry, University of San Francisco, San Francisco, CA 94117, United States
| | - Alicia Luhrs
- Department of Chemistry, University of San Francisco, San Francisco, CA 94117, United States
| | - Clara Feider
- Department of Chemistry, University of San Francisco, San Francisco, CA 94117, United States
| | - Lawrence D Margerum
- Department of Chemistry, University of San Francisco, San Francisco, CA 94117, United States.
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23
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Hernández Ramirez RE, Lijanova IV, Likhanova NV, Xometl OO. PAMAM dendrimers with porphyrin core: synthesis and metal-chelating behavior. J INCL PHENOM MACRO 2015. [DOI: 10.1007/s10847-015-0582-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Diallo MS, Kotte MR, Cho M. Mining Critical Metals and Elements from Seawater: Opportunities and Challenges. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:9390-9. [PMID: 25894365 DOI: 10.1021/acs.est.5b00463] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The availability and sustainable supply of technology metals and valuable elements is critical to the global economy. There is a growing realization that the development and deployment of the clean energy technologies and sustainable products and manufacturing industries of the 21st century will require large amounts of critical metals and valuable elements including rare-earth elements (REEs), platinum group metals (PGMs), lithium, copper, cobalt, silver, and gold. Advances in industrial ecology, water purification, and resource recovery have established that seawater is an important and largely untapped source of technology metals and valuable elements. This feature article discusses the opportunities and challenges of mining critical metals and elements from seawater. We highlight recent advances and provide an outlook of the future of metal mining and resource recovery from seawater.
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Affiliation(s)
- Mamadou S Diallo
- †Graduate School of EEWS (Energy, Environment, Water and Sustainability), Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, South Korea
- ‡Environmental Science and Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, United States
| | - Madhusudhana Rao Kotte
- †Graduate School of EEWS (Energy, Environment, Water and Sustainability), Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, South Korea
| | - Manki Cho
- †Graduate School of EEWS (Energy, Environment, Water and Sustainability), Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, South Korea
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25
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Picco AS, Knoll W, Ceolín M, Azzaroni O. Mesophase Transformation in Amphiphilic Hyperbranched Polymers Induced by Transition Metal Ion Complexation. Creating Well-Defined Metallo-Supramolecular Assemblies from "Ill-Defined" Building Blocks. ACS Macro Lett 2015; 4:94-100. [PMID: 35596380 DOI: 10.1021/mz500688r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Self-organized metallo-supramolecular heterostructures have potential applications that include molecular electronics, photovoltaics, and magnetic devices, among other examples. The main challenge that scientists typically face when designing advanced supramolecular materials is to achieve structurally defined assemblies by resolving conflicting demands on the topological and/or chemical features of the constituting building blocks. Accordingly, the formation of well-defined metallo-supramolecular arrays using ill-defined, highly polydisperse, self-assemblable starting compounds marks a profound departure from traditional supramolecular paradigms. The present work describes the first observation of spontaneous mesophase transformation of well-defined metallo-supramolecular assemblies in solution as a result of the complexation of transition metal ions into the ionophilic domains of highly branched unimolecular micelles constituted of N-acylated hyperbranched polyethylenimine. Experimental results based on a combination of different synchrotron-based techniques provide unprecedented experimental evidence revealing that ion-induced self-assembly of amphiphilic hyperbranched polymers can be used to achieve highly ordered metallo-supramolecular structures not only in solution but also on solid surfaces. We believe that this emerging conceptual framework can open extremely interesting new synthetic and technological opportunities in the area of self-assembly of well-defined metallo-supramolecular architectures obtained from building blocks with poor structural regularity but easily provided in large quantities by simple and inexpensive preparative chemistries.
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Affiliation(s)
- Agustín S. Picco
- Instituto de Investigaciones
Fisicoquímicas
Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata, CONICET, CC 16 − Suc. 4, 1900 La
Plata, Argentina
| | - Wolfgang Knoll
- Austrian Institute of Technology (AIT), Donau-City-Strasse
1, 1220 Vienna, Austria
| | - Marcelo Ceolín
- Instituto de Investigaciones
Fisicoquímicas
Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata, CONICET, CC 16 − Suc. 4, 1900 La
Plata, Argentina
| | - Omar Azzaroni
- Instituto de Investigaciones
Fisicoquímicas
Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata, CONICET, CC 16 − Suc. 4, 1900 La
Plata, Argentina
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26
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Valdés O, Vergara CE, Camarada MB, Carrasco-Sánchez V, Nachtigall FM, Tapia J, Fischer R, González-Nilo FD, Santos LS. Synthesis and characterization of an insoluble polymer based on polyamidoamine: applications for the decontamination of metals in aqueous systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 147:321-329. [PMID: 25304521 DOI: 10.1016/j.jenvman.2014.09.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 09/09/2014] [Accepted: 09/14/2014] [Indexed: 06/04/2023]
Abstract
We present a novel, insoluble, low-generation polyamidoamine (PAMAM)-based polymer. The monomer and polymer were characterized by fourier transform infrared spectroscopy, electrospray ionization mass spectrometry and thermogravimetric measurement, revealing that G0 acryloyl-terminated PAMAM were synthesized and polymerized using ammonium persulfate as an initiator, producing a high-density PAMAM derivative (PAMAM-HD). PAMAM-HD was tested for its ability to remove Na(I), K(I), Ca(II), Mg(II), Cu(II), Mn(II), Cd(II), Pb(II) and Zn(II) ions from acidic, neutral and basic aqueous solutions. PAMAM-HD efficiently removed metals ions from all three solutions. The greatest absorption efficiency at neutral pH was observed against Cu(II), Cd(II) and Pb(II), and the experimental data were supported by the calculated Kd values. Our data could have a significant impact on water purification by providing an inexpensive and efficient polymer for the removal of metal ions.
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Affiliation(s)
- Oscar Valdés
- Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile
| | - Claudia E Vergara
- Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile
| | - Maria B Camarada
- Universidad Andres Bello, Facultad de Biología, Center for Bioinformatics and Integrative Biology (CBIB), República 239, Santiago, Chile; Fraunhofer Institute for Molecular Biology and Applied Ecology, Aachen, Germany
| | - Veronica Carrasco-Sánchez
- Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile; Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile
| | - Fabiane M Nachtigall
- Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile
| | - Jaime Tapia
- Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile
| | - Rainer Fischer
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Aachen, Germany; Institute of Molecular Biotechnology - RWTH Aachen University, Germany
| | - F D González-Nilo
- Universidad Andres Bello, Facultad de Biología, Center for Bioinformatics and Integrative Biology (CBIB), República 239, Santiago, Chile; Fraunhofer Chile Research Foundation, M. Sánchez Fontecilla 310 piso 14, Las Condes, Chile
| | - Leonardo S Santos
- Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile; Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile.
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27
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Camarada MB, Márquez-Miranda V, Araya-Durán I, Yévenes A, González-Nilo F. PAMAM G4 dendrimers as inhibitors of the iron storage properties of human L-chain ferritin. Phys Chem Chem Phys 2015; 17:19001-11. [DOI: 10.1039/c5cp02594j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cationic dendrimers, such as PAMAM, are known to be positively charged at neutral pH allowing their unspecific interaction with proteins and other cellular components.
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Affiliation(s)
- M. B. Camarada
- Universidad Bernardo O Higgins
- Laboratorio de Bionanotecnología
- Santiago
- Chile
| | - V. Márquez-Miranda
- Universidad Andres Bello
- Facultad de Biología
- Center for Bioinformatics and Integrative Biology (CBIB)
- Santiago
- Chile
| | - I. Araya-Durán
- Universidad Andres Bello
- Facultad de Biología
- Center for Bioinformatics and Integrative Biology (CBIB)
- Santiago
- Chile
| | - A. Yévenes
- Pontificia Universidad Católica de Chile
- Facultad de Química
- Macul
- Santiago
| | - F. González-Nilo
- Universidad Andres Bello
- Facultad de Biología
- Center for Bioinformatics and Integrative Biology (CBIB)
- Santiago
- Chile
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28
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Camarada M, Zúñiga M, Alzate-Morales J, Santos L. Computational study of the complexation of metals ions with poly(amidoamine) PAMAM G0 dendrimers. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.10.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Ottaviani MF, Cangiotti M, Fattori A, Coppola C, Posocco P, Laurini E, Liu X, Liu C, Fermeglia M, Peng L, Pricl S. Copper(II) binding to flexible triethanolamine-core PAMAM dendrimers: a combined experimental/in silico approach. Phys Chem Chem Phys 2014; 16:685-94. [PMID: 24256926 DOI: 10.1039/c3cp54005g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The structure of copper(II) complexes formed with triethanolamine (TEA) core poly(amidoamine) (PAMAM) dendrimers from generation 0 (G0) to 4 (G4) were investigated by the electron paramagnetic resonance (EPR) technique and molecular simulations. Different square planar coordination modes were detected as a function of copper(II) concentration, whose dynamic evolution relates to the high structural flexibility peculiar to this dendrimer family. Modulated by generation and solvation effects, copper(II) complexation begins at the dendrimer core and progresses to the dendrimer periphery. Differently from the ethylenediamine (EDA) core PAMAM dendrimers, the copper complexes involving the TEA core showed high mobility and saturation of the internal sites above the 1 : 1 molar ratio between the dendrimers and the ions. Therefore, by combining EPR and molecular simulations for the first time, ultimately we obtained unique information on structure, dynamics and copper interacting ability of these dendrimers which could be successfully exploited in biomedical applications.
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Affiliation(s)
- Maria Francesca Ottaviani
- Department of Earth, Life and Environment Sciences, University of Urbino, Località Crocicchia, 61029 Urbino, Italy.
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30
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Rossi JC, Maret B, Vidot K, Francoia JP, Cangiotti M, Lucchi S, Coppola C, Ottaviani MF. Multi-technique characterization of poly-L-lysine dendrigrafts-Cu(II) complexes for biocatalysis. Macromol Biosci 2014; 15:275-90. [PMID: 25330467 DOI: 10.1002/mabi.201400341] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/10/2014] [Indexed: 11/10/2022]
Abstract
Poly-L-lysine is a biocompatible polymer used for drug or gene delivery, for transport through cellular membranes, and as nanosized magnetic resonance imaging contrast agents. Cu(II)-poly-L-lysine complexes are of particular interest for their role in biocatalysis. In this study, poly-L-lysine dendrigrafts (DGLs) at different generations (G2, G3, and G4) are synthesized and characterized in absence and presence of Cu(II) by means of electron paramagnetic resonance (EPR), UV-Vis, potentiometric titration and circular dichroism (CD). The analysis is performed as a function of the [Cu(II)]/[Lys] (=R) molar ratio, pH and generation by identifying differently flexible complexes in different dendrimer regions. The amine sites in the lateral chains become increasingly involved with the increase of pH. The good agreement and complementarity of the results from the different techniques provide an integrate view of the structural and dynamic properties of Cu(II)-DGL complexes implementing their use as biocatalysts.
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Affiliation(s)
- Jean-Christophe Rossi
- Institut des Biomolecules Max Mousseron/UMR 5247 Université Montpellier II, Place Eugène Bataillon, 34095, Montpellier, France.
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31
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Furlan S, La Penna G, Appelhans D, Cangiotti M, Ottaviani MF, Danani A. Combined EPR and molecular modeling study of PPI dendrimers interacting with copper ions: effect of generation and maltose decoration. J Phys Chem B 2014; 118:12098-111. [PMID: 25247928 DOI: 10.1021/jp505420s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding the early onset of neurodegeneration is crucial to deploy specific treatments for patients before the process becomes irreversible. Copper has been proposed as a biomarker for many neurodegenerative disorders, being the ion released by pathologically unfolded proteins involved in many biochemical pathways. Dendrimers are macromolecules that bind metal ions with a large ion/ligand ratio, thus, allowing a massive collection of copper. This work provides structural information, obtained via molecular modeling and EPR, for the binding sites of copper in polypropyleneimine (PPI) dendrimers, especially in the maltose decorated form that has potential applications in diagnosis and therapies for various types of neurodegenerations. The analysis of the EPR spectra showed that, at the lowest Cu concentrations, the results are well supported by the calculations. Moreover, EPR analysis at increasing Cu(II) concentration allowed us to follow the saturation behavior of the interacting sites identified by the modeling study.
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Affiliation(s)
- Sara Furlan
- Department of Chemical and Pharmaceutical Sciences, University of Trieste , Via Giorgieri 1, I-34127 Trieste, Italy
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32
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PAMAM dendrimers on controlled pore glass: The effect of tethered dendrimer size and tethered affinity groups NTA and terpy on metal ion and indicator dye uptake. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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33
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Ji Y, Yang X, Qian Y. Poly-amidoamine structure characterization: amide resonance structure of imidic acid (HO–CN) and tertiary ammonium. RSC Adv 2014. [DOI: 10.1039/c4ra09081k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The dendrimer PAMAM has an amide resonance structure,i.e.imidic acid (HO–CN), and a tertiary ammonium structure, which can be characterized using15N/1H/2D NH/13C NMR, IR and MS.
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Affiliation(s)
- Yan Ji
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
| | - XiaoLiang Yang
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Ying Qian
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
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34
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Ji Y, Qian Y. A study using quantum chemical theory methods on the intrinsic fluorescence emission and the possible emission mechanisms of PAMAM. RSC Adv 2014. [DOI: 10.1039/c4ra09184a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural units imidic acid (HO–CN) and tertiary ammonium in PAMAM dendrimers were proven to give fluorescence emission by TDDFT methods.
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Affiliation(s)
- Yan Ji
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
| | - Ying Qian
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
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35
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Ottaviani MF, El Brahmi N, Cangiotti M, Coppola C, Buccella F, Cresteil T, Mignani S, Caminade AM, Costes JP, Majoral JP. Comparative EPR studies of Cu(ii)-conjugated phosphorous-dendrimers in the absence and presence of normal and cancer cells. RSC Adv 2014. [DOI: 10.1039/c4ra06066k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
EPR analysis revealed peculiar structural and dynamical properties of anticancer-activeG3B–Cu(ii) in absence and presence of normal and cancer cells.
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Affiliation(s)
- M. F. Ottaviani
- Department of Earth, Life and Environment Sciences
- University of Urbino
- 61029 Urbino, Italy
| | - N. El Brahmi
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse Cedex 4, France
- Euro-Mediterranean University of Fez
- Fès, Morocco
| | - M. Cangiotti
- Department of Earth, Life and Environment Sciences
- University of Urbino
- 61029 Urbino, Italy
| | - C. Coppola
- Department of Earth, Life and Environment Sciences
- University of Urbino
- 61029 Urbino, Italy
| | - F. Buccella
- Department of Earth, Life and Environment Sciences
- University of Urbino
- 61029 Urbino, Italy
| | - T. Cresteil
- ICSN-CNRS UPR 2301
- 91198 Gif sur Yvette, France
| | - S. Mignani
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologique
- Université Paris Descartes
- PRES Sorbonne Paris Cité
- CNRS UMR 860
- Paris 75006, France
| | - A. M. Caminade
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse Cedex 4, France
| | - J. P. Costes
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse Cedex 4, France
| | - J. P. Majoral
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse Cedex 4, France
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36
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Ottaviani MF, Cangiotti M, Fattori A, Coppola C, Lucchi S, Ficker M, Petersen JF, Christensen JB. Copper(II) complexes with 4-carbomethoxypyrrolidone functionalized PAMAM-dendrimers: an EPR study. J Phys Chem B 2013; 117:14163-72. [PMID: 24152031 DOI: 10.1021/jp410307z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The internal flexibility and interacting ability of PAMAM-dendrimers having 4-carbomethoxypyrrolidone-groups as surface groups (termed Gn-Pyr), which may be useful for biomedical purposes, and ion traps were investigated by analyzing the EPR spectra of their copper(II) complexes. Increasing amounts (with respect to the Pyr groups) of copper(II) gave rise to different signals constituting the EPR spectra at room and low temperature corresponding to different coordinations of Cu(2+) inside and outside the dendrimers. At low Cu(2+) concentrations, CuN4 coordination involving the DAB core is preferential for G3- and G5-Pyr, while G4-Pyr shows a CuN3O coordination. CuN2O2 coordination into the external dendrimer layer was also contributing to G3- and G4-Pyr spectra. The structures of the proposed copper-dendrimer complexes were also shown. G4-Pyr displays unusual binding ability toward Cu(II) ions. Mainly the remarkably low toxicity shown by G4-Pyr and its peculiar binding ability leads to a potential use in biomedical fields.
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Affiliation(s)
- Maria Francesca Ottaviani
- Department of Earth, Life and Environment Sciences, University of Urbino , Località Crocicchia, 61029 Urbino, Italy
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García-Gallego S, Cangiotti M, Fiorani L, Fattori A, Muñoz-Fernández MÁ, Gomez R, Ottaviani MF, de la Mata FJ. Anionic sulfonated and carboxylated PPI dendrimers with the EDA core: synthesis and characterization of selective metal complexing agents. Dalton Trans 2013; 42:5874-89. [PMID: 23462972 DOI: 10.1039/c3dt32870h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Herein we describe the synthesis and characterization of new sulfonated and carboxylated poly(propyleneimino) (PPI) dendrimers with the ethylenediamino (EDA) core, at generations 1, 2 and 3. By means of UV-Vis and EPR spectroscopy, using Cu(2+) as a probe, we concluded that these dendrimers show a specific pattern in the coordination of metal ions. In agreement with the UV-Vis studies, EPR spectra of carboxylated compounds are constituted by 3 different signals which appear and then disappear with increasing copper concentration, corresponding to the saturation of different copper complexation sites. At the lowest copper concentration up to a 1:1 molar ratio between Cu(II) and the dendrimer, the spectrum is characteristic of a CuN2O2 coordination at the core of the dendrimer. The spectrum appearing at higher Cu(II) concentrations indicates a peripheral location of the ions coordinating one nitrogen and 3 oxygen atoms in a square planar geometry in restricted mobility conditions. For the highest concentrations tested, copper ions are confined at the external dendrimer surface with CuO4 coordination. For sulfonate systems, the EPR results are in line with a weaker interaction of Cu(II) with the nitrogen sites and a stronger interaction with the oxygen (SO3(-)) groups with respect to the interactions measured by EPR for carboxylate systems.
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Affiliation(s)
- Sandra García-Gallego
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
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38
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Kłos JS, Sommer JU. Coarse grained simulations of neutral and charged dendrimers. POLYMER SCIENCE SERIES C 2013. [DOI: 10.1134/s1811238213070023] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bazzicalupi C, Bianchi A, Giorgi C, Gratteri P, Mariani P, Valtancoli B. Metal Ion Binding by a G-2 Poly(ethylene imine) Dendrimer. Ion-Directed Self-Assembling of Hierarchical Mono- and Two-Dimensional Nanostructured Materials. Inorg Chem 2013; 52:2125-37. [DOI: 10.1021/ic3025292] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Carla Bazzicalupi
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Antonio Bianchi
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Claudia Giorgi
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Paola Gratteri
- Department of NEUROFARBA, Pharmaceutical and Nutraceutical Section, and Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Italy
| | - Palma Mariani
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Barbara Valtancoli
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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Wang H, Shentu B, Zhang W, Gu C, Weng Z. Magnetic nanoparticle supported catalytic Cu(II)–poly(amindoamine) complexes for aerobic oxidative polymerization to form poly(2,6-dimethyl-1,4-phenylene oxide) in water. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Ottaviani MF, Cangiotti M, Fiorani L, Barnard A, Jones SP, Smith DK. Probing dendron structure and nanoscale self-assembly using computer-aided analysis of EPR spectra. NEW J CHEM 2012. [DOI: 10.1039/c1nj20685k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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García-Gallego S, Rodríguez JS, Jiménez JL, Cangiotti M, Ottaviani MF, Muñoz-Fernández MÁ, Gómez R, de la Mata FJ. Polyanionic N-donor ligands as chelating agents in transition metal complexes: synthesis, structural characterization and antiviral properties against HIV. Dalton Trans 2012; 41:6488-99. [DOI: 10.1039/c2dt11793b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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García-Gallego S, Serramía MJ, Arnaiz E, Díaz L, Muñoz-Fernández MA, Gómez-Sal P, Ottaviani MF, Gómez R, de la Mata FJ. Transition-Metal Complexes Based on a Sulfonate-Containing N-Donor Ligand and Their Use as HIV Antiviral Agents. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001121] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Tan NCB, Balogh L, Trevino SF, Tomalia DA, Lin JS. Characterization of Dendrimer-Based Nanocomposites by Saxs and Sans. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-519-143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractDendritic polymers have been used as soluble templates/unimolecular reactors from which nano-clusters of inorganic compounds were synthesized. These organic/inorganic, dendrimerbased hybrid species or “nanocomposites” display unusual properties, i.e., their solubility is deterrnined by the properties of the dendrimer molecules. Since it has been established that there is no covalent bond between the dendrimer host and the inorganic guest, these observations suggest that the guests are physically and spatially restricted by the dendrimer shell. However, this structure has not been verified. In this investigation a preliminary understanding of the physical structure of these dendrimer-based nanocomposites was sought. A model system of PAMAM dendrimer-copper sulfide nanocomposites was studied in various stages of its formation using a combination of small angle X-ray and neutron scattering experiments. The results suggest that little perturbation of the dendritic species occurs on complexation, but indicate that a secondary supermolecular aggregation phenomena occurs within nanocomposite solutions.
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45
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Imaoka T, Kawana Y, Tsuji M, Yamamoto K. Modulation of the aerobic oxidative polymerization in phenylazomethine dendrimers assembling copper complexes. Chemistry 2010; 16:11003-11. [PMID: 20803586 DOI: 10.1002/chem.201001516] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The aerobic oxidative polymerization of phenol derivatives can provide poly(phenylene oxide)s, which are known as engineering plastics. This oxidation can be carried out with atmospheric oxygen molecules as the oxidizing reagent in the presence of copper complexes as the catalyst; however, stoichiometric or excess amounts of bases are also generally required. By using a phenylazomethine dendrimer complexed with several equivalent amounts of copper chloride, the additive (base)-free polymerization of 2,6-difluorophenol was successful with a very small amount of the catalyst (0.7 mol% of copper for the monomer) because the dendrimer was composed of many Schiff base units, affording a base and catalyst (copper complex) condensed reaction field. The resulting polymer was nearly linear and the molecular weight was very high. When the equimolar amount of the copper complex in one dendrimer molecule was increased, the polymer obtained under this reaction condition was rather branched, resulting in a higher glass transition temperature.
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Affiliation(s)
- Takane Imaoka
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259, Nagatsuta, Midoriku, Yokohama, 226-8503 Japan
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46
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Priyam A, Blumling DE, Knappenberger KL. Synthesis, characterization, and self-organization of dendrimer-encapsulated HgTe quantum dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:10636-10644. [PMID: 20481491 DOI: 10.1021/la100866z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Mercury telluride (HgTe) quantum dots (QDs) were synthesized in methanol at 5 degrees C using generation 5 (G5) and 7 (G7) polyamidoamine (PAMAM) dendrimers, which function both as nucleation sites and as nanoparticle stabilizers. Transmission electron microscopy (TEM) data indicate these particles were slightly oblate, with an average aspect ratio of 1.3 +/- 0.1 and a minor axis of 2.6 +/- 0.3 nm. The crystal phase was determined to be coloradoite (cubic system) by analysis of the electron diffraction pattern. Absorption maxima for HgTe QDs ranged from 950 to 970 nm, depending on the dendrimer generation and concentration. QD size distribution was optimized by careful variation of the Hg(2+):dendrimer surface group molar ratio for both G5 and G7 dendrimers. An increase in molar ratio from 1:0.5 to 1:4 resulted in a decrease in the half-width at half-maximum (HWHM) of the HgTe bandgap absorption from 68 +/- 3 to 52 +/- 2 nm, indicating a size distribution focusing of 23 +/- 4%. Second-derivative analysis of HgTe QD FTIR absorption spectra suggested that the quantum dots were fully encapsulated by a single G7 dendrimer, whereas multiple G5 dendrimers were necessary to stabilize a single nanoparticle. TEM and FTIR data revealed that the HgTe QDs form two-dimensional necklace-type arrays through a self-organization process, which proceeds through interpenetration of dendritic arms. TEM data further indicated that the average nanonecklace contained 10-15 QDs with an average inter-QD separation of 1.3 +/- 0.7 nm and a total chain length of 46 +/- 6 nm.
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Affiliation(s)
- Amiya Priyam
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
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47
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Jung DI, Song JH, Shin EH, Kim YY, Lee DH, Choi SK, Hahn JT. Synthesis of Poly(3,4,5-trihydroxybenzoate) dendrimers from Polyphenols and Their Chemiluminescence. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.04.1031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Kłos JS, Sommer JU. Simulations of Terminally Charged Dendrimers with Flexible Spacer Chains and Explicit Counterions. Macromolecules 2010. [DOI: 10.1021/ma1003997] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- J. S. Kłos
- Leibniz Institute of Polymer Research Dresden e. V., 01069 Dresden, Germany
- Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
| | - J.-U. Sommer
- Leibniz Institute of Polymer Research Dresden e. V., 01069 Dresden, Germany
- Institute for Theoretical Physics, Technische Universität Dresden, 01069 Dresden, Germany
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49
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Biswal J, Ramnani S, Tewari R, Dey G, Sabharwal S. Short aspect ratio gold nanorods prepared using gamma radiation in the presence of cetyltrimethyl ammonium bromide (CTAB) as a directing agent. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2009.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Gu C, Xiong K, Shentu B, Zhang W, Weng Z. Catalytic Cu(II)−Amine Terminated Poly(amidoamine) Dendrimer Complexes for Aerobic Oxidative Polymerization To Form Poly(2,6-dimethyl-1,4-phenylene oxide) in Water. Macromolecules 2010. [DOI: 10.1021/ma902214e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Cheng Gu
- State Key Lab of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ke Xiong
- State Key Lab of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Baoqing Shentu
- State Key Lab of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Wenli Zhang
- State Key Lab of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhixue Weng
- State Key Lab of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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