1
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Kürsteiner R, Ritter M, Sologubenko A, Stricker L, Panzarasa G. Time-domain Tollens reaction: synthesising silver nanoparticles with the formaldehyde clock. NANOSCALE ADVANCES 2023; 5:2175-2179. [PMID: 37056627 PMCID: PMC10089108 DOI: 10.1039/d3na00121k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 03/01/2023] [Indexed: 06/19/2023]
Abstract
The addition of silver(i) ions to the methylene glycol-sulphite (MGS) clock reaction results in the sudden formation of metallic silver nanoparticles. Stable suspensions are obtained in the presence of poly(vinylpyrrolidone). The time delay before the appearance of the particles, as well as their size, decreases with the initial methylene glycol concentration while their monodispersity increases.
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Affiliation(s)
- Ronny Kürsteiner
- Institute for Building Materials, Department of Civil, Environmental and Geomatic Engineering, ETH Zürich Laura-Hezner-Weg 7 8093 Zürich Switzerland
| | - Maximilian Ritter
- Institute for Building Materials, Department of Civil, Environmental and Geomatic Engineering, ETH Zürich Laura-Hezner-Weg 7 8093 Zürich Switzerland
| | - Alla Sologubenko
- Scientific Center for Light and Electron Microscopy (ScopeM), ETH Zürich Otto-Stern-Weg 3 8093 Zürich Switzerland
| | - Laura Stricker
- Institute for Building Materials, Department of Civil, Environmental and Geomatic Engineering, ETH Zürich Laura-Hezner-Weg 7 8093 Zürich Switzerland
| | - Guido Panzarasa
- Institute for Building Materials, Department of Civil, Environmental and Geomatic Engineering, ETH Zürich Laura-Hezner-Weg 7 8093 Zürich Switzerland
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2
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Sharma R, Borah SJ, Bhawna, Kumar S, Gupta A, Singh P, Goel VK, Kumar R, Kumar V. Functionalized Peptide-Based Nanoparticles for Targeted Cancer Nanotherapeutics: A State-of-the-Art Review. ACS OMEGA 2022; 7:36092-36107. [PMID: 36278104 PMCID: PMC9583493 DOI: 10.1021/acsomega.2c03974] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/19/2022] [Indexed: 10/04/2023]
Abstract
Cancer mortality is increasing at an alarming rate across the globe. Albeit, many therapeutics are available commercially, they are not effective and have no cure up to today. Moreover, the knowledge gap in cancer therapy persists, representing a potential blind spot for the innovation of effective anticancer therapeutics. This review presents an update on current advancements in nanopeptide therapeutics. Herein, a detailed exploration of peptide-functionalized nanoparticles for the development of nanotherapeutics was carried out. Different approaches that include self-assembly nanostructures, solid phase peptide synthesis, ligand exchange, chemical reduction, and conjugation methods for assembling peptides for functionalizing nanodrugs are also highlighted. An outlook on biomedical applications is also reviewed. Additionally, a comprehensive discussion on targeted cancer cell therapy and mechanism of action are provided. The present review reflects the functional novelty of nanodrugs to improve stability, accessibility, bioavailability, and specificity toward cancerous cells. Finally, it summarizes the current challenges and future perspectives on the formulation of these nanodrugs.
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Affiliation(s)
- Ritika Sharma
- Department of Biochemistry, University of Delhi, Delhi 110021, India
| | - Shikha Jyoti Borah
- Special Centre for Nano Sciences, Jawaharlal Nehru University, Delhi 110067, India
| | - Bhawna
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Sanjeev Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India
- Department of Chemistry, Kirori Mal College, University of Delhi, Delhi 110007, India
| | - Akanksha Gupta
- Department of Chemistry, Sri Venkateswara College, University of Delhi, Delhi 110007, India
| | - Poonam Singh
- Department of Applied Chemistry, Delhi Technological University, Delhi 110042, India
| | - Vijay Kumar Goel
- School of Physical Science, Jawaharlal Nehru University, Delhi 110067, India
| | - Ravinder Kumar
- Department of Chemistry, Gurukula Kangri (Deemed to be University), Haridwar 249404, Uttarakhand, India
| | - Vinod Kumar
- Special Centre for Nano Sciences, Jawaharlal Nehru University, Delhi 110067, India
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3
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Matsubara S, Okamoto Y, Yoshikawa M, Tsukiji S, Higuchi M. A Peptide Nanocage Constructed by Self-Assembly of Oligoproline Conjugates. Bioconjug Chem 2022; 33:1785-1788. [PMID: 35900377 DOI: 10.1021/acs.bioconjchem.2c00290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cage-like supramolecular assemblies called molecular cages, which possess attractive functions, have been prepared. Although biomolecule-based nanocages are required for biological/medical applications such as drug delivery systems, the majority of nanocages are constructed using aromatic compounds with lower biocompatibility and biodegradability. In this study, the construction of a peptide nanocage consisting of an oligoproline conjugate is demonstrated. The conjugate was easy to prepare and had high biocompatibility. The oligoproline moiety of the conjugate had a rigid, rod-like structure suitable for the backbone of the supramolecular nanocage. The conjugates self-assembled to form peptide nanocages with a huge inner cavity.
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Affiliation(s)
- Shogo Matsubara
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Yui Okamoto
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Masaru Yoshikawa
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Shinya Tsukiji
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan.,Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Masahiro Higuchi
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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4
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Hu Y, Tian ZY, Xiong W, Wang D, Zhao R, Xie Y, Song YQ, Zhu J, Lu H. Water-Assisted and Protein-Initiated Fast and Controlled Ring-Opening Polymerization of Proline N-Carboxyanhydride. Natl Sci Rev 2022; 9:nwac033. [PMID: 36072505 PMCID: PMC9438472 DOI: 10.1093/nsr/nwac033] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/29/2021] [Accepted: 02/15/2022] [Indexed: 12/04/2022] Open
Abstract
The production of polypeptides via the ring-opening polymerization (ROP) of N-carboxyanhydride (NCA) is usually conducted under stringent anhydrous conditions. The ROP of proline NCA (ProNCA) for the synthesis of poly-L-proline (PLP) is particularly challenging due to the premature product precipitation as polyproline type I helices, leading to slow reactions for up to one week, poor control of the molar mass and laborious workup. Here, we report the unexpected water-assisted controlled ROP of ProNCA, which affords well-defined PLP as polyproline II helices in 2–5 minutes and almost-quantitative yields. Experimental and theoretical studies together suggest the as-yet-unreported role of water in facilitating proton shift, which significantly lowers the energy barrier of the chain propagation. The scope of initiators can be expanded from hydrophobic amines to encompass hydrophilic amines and thiol-bearing nucleophiles, including complex biomacromolecules such as proteins. Protein-mediated ROP of ProNCA conveniently affords various protein-PLP conjugates via a grafting-from approach. PLP modification not only preserves the biological activities of the native proteins, but also enhances their resistance to extreme conditions. Moreover, PLP modification extends the elimination half-life of asparaginase (ASNase) 18-fold and mitigates the immunogenicity of wt ASNase >250-fold (ASNase is a first-line anticancer drug for lymphoma treatment). This work provides a simple solution to a long-standing problem in PLP synthesis, and offers valuable guidance for the development of water-resistant ROP of other proline-like NCAs. The facile access to PLP can greatly boost the application potential of PLP-based functional materials for engineering industry enzymes and therapeutic proteins.
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Affiliation(s)
- Yali Hu
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing100871, China
| | - Zi-You Tian
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, China
| | - Wei Xiong
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, China
| | - Dedao Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital & Institute, Beijing100142, China
| | - Ruichi Zhao
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, China
| | - Yan Xie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital & Institute, Beijing100142, China
| | - Yu-Qin Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital & Institute, Beijing100142, China
| | - Jun Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital & Institute, Beijing100142, China
| | - Hua Lu
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, China
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5
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Gaurav I, Wang X, Thakur A, Iyaswamy A, Thakur S, Chen X, Kumar G, Li M, Yang Z. Peptide-Conjugated Nano Delivery Systems for Therapy and Diagnosis of Cancer. Pharmaceutics 2021; 13:1433. [PMID: 34575511 PMCID: PMC8471603 DOI: 10.3390/pharmaceutics13091433] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/31/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
Peptides are strings of approximately 2-50 amino acids, which have gained huge attention for theranostic applications in cancer research due to their various advantages including better biosafety, customizability, convenient process of synthesis, targeting ability via recognizing biological receptors on cancer cells, and better ability to penetrate cell membranes. The conjugation of peptides to the various nano delivery systems (NDS) has been found to provide an added benefit toward targeted delivery for cancer therapy. Moreover, the simultaneous delivery of peptide-conjugated NDS and nano probes has shown potential for the diagnosis of the malignant progression of cancer. In this review, various barriers hindering the targeting capacity of NDS are addressed, and various approaches for conjugating peptides and NDS have been discussed. Moreover, major peptide-based functionalized NDS targeting cancer-specific receptors have been considered, including the conjugation of peptides with extracellular vesicles, which are biological nanovesicles with promising ability for therapy and the diagnosis of cancer.
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Affiliation(s)
- Isha Gaurav
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (I.G.); (X.W.); (A.I.); (X.C.); (M.L.)
| | - Xuehan Wang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (I.G.); (X.W.); (A.I.); (X.C.); (M.L.)
| | - Abhimanyu Thakur
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science and Innovation-CAS Limited, Hong Kong, China;
| | - Ashok Iyaswamy
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (I.G.); (X.W.); (A.I.); (X.C.); (M.L.)
- Mr. & Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Sudha Thakur
- National Institute for Locomotor Disabilities (Divyangjan), Kolkata 700090, India;
| | - Xiaoyu Chen
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (I.G.); (X.W.); (A.I.); (X.C.); (M.L.)
| | - Gaurav Kumar
- School of Basic and Applied Science, Galgotias University, Greater Noida 203201, India;
| | - Min Li
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (I.G.); (X.W.); (A.I.); (X.C.); (M.L.)
- Mr. & Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Zhijun Yang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (I.G.); (X.W.); (A.I.); (X.C.); (M.L.)
- Changshu Research Institute, Hong Kong Baptist University, Changshu Economic and Technological Development (CETD) Zone, Changshu 215500, China
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6
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Li X, Jian M, Sun Y, Zhu Q, Wang Z. The Peptide Functionalized Inorganic Nanoparticles for Cancer-Related Bioanalytical and Biomedical Applications. Molecules 2021; 26:3228. [PMID: 34072160 PMCID: PMC8198790 DOI: 10.3390/molecules26113228] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 02/08/2023] Open
Abstract
In order to improve their bioapplications, inorganic nanoparticles (NPs) are usually functionalized with specific biomolecules. Peptides with short amino acid sequences have attracted great attention in the NP functionalization since they are easy to be synthesized on a large scale by the automatic synthesizer and can integrate various functionalities including specific biorecognition and therapeutic function into one sequence. Conjugation of peptides with NPs can generate novel theranostic/drug delivery nanosystems with active tumor targeting ability and efficient nanosensing platforms for sensitive detection of various analytes, such as heavy metallic ions and biomarkers. Massive studies demonstrate that applications of the peptide-NP bioconjugates can help to achieve the precise diagnosis and therapy of diseases. In particular, the peptide-NP bioconjugates show tremendous potential for development of effective anti-tumor nanomedicines. This review provides an overview of the effects of properties of peptide functionalized NPs on precise diagnostics and therapy of cancers through summarizing the recent publications on the applications of peptide-NP bioconjugates for biomarkers (antigens and enzymes) and carcinogens (e.g., heavy metallic ions) detection, drug delivery, and imaging-guided therapy. The current challenges and future prospects of the subject are also discussed.
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Affiliation(s)
- Xiaotong Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (X.L.); (M.J.); (Y.S.)
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Minghong Jian
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (X.L.); (M.J.); (Y.S.)
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yanhong Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (X.L.); (M.J.); (Y.S.)
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Qunyan Zhu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (X.L.); (M.J.); (Y.S.)
| | - Zhenxin Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (X.L.); (M.J.); (Y.S.)
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
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7
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Miyake R, Nitanai Y, Nakagawa Y, Xing J, Harano K, Nakamura E, Okabayashi J, Minamikawa T, Uruma K, Kanaizuka K, Kurihara M. Preparation of Hierarchically Assembled Silver Nanostructures based on the Morphologies of Crystalline Peptide-Silver(I) Complexes. Chempluschem 2020; 84:295-301. [PMID: 31950758 DOI: 10.1002/cplu.201800666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/21/2019] [Indexed: 11/09/2022]
Abstract
The preparation of a hierarchically assembled Ag nanostructures based on a nanocrystalline assembly was demonstrated using an Ag(I) complex of a dipeptide (AspDap). By heating under N2 gas, a spherical assembly of a nanocrystalline dipeptide-Ag(I) complex (diameter 4-5 μm), which has a morphology similar to the assembled structure of the dipeptide, was transformed to an assembly of Ag nanostructures, where the micrometre-order crystalline morphology was maintained. In addition, detailed scanning electron microscopy studies revealed that Ag nanoparticles (diameter ca. 10 nm) were formed on the surface of the Ag nanostructure. When the Ag(I) ions were reduced to Ag(0), this phenomenon exhibited surface dependence due to the anisotropic two-dimensional Ag(I) arrangement in the crystals. Thermogravimetric measurements and X-ray photoelectron spectroscopy revealed that the reduction proceeds in a stepwise manner around 200-250 °C, together with the removal of primary and secondary carboxylic groups in the dipeptide. Comparison with the heating process of the crystalline Ag(I) complex of β-alanine indicated that stepwise reduction is key for maintaining the original micrometre-order morphology.
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Affiliation(s)
- Ryosuke Miyake
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,JST, PRESTO, 4-1-8, Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Yukari Nitanai
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Yuki Nakagawa
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Junfei Xing
- Department of Chemistry Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunky-ku, Tokyo, 113-0033, Japan
| | - Koji Harano
- Department of Chemistry Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunky-ku, Tokyo, 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunky-ku, Tokyo, 113-0033, Japan
| | - Jun Okabayashi
- Research Center for Spectrochemistry Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunky-ku, Tokyo, 113-0033, Japan
| | - Takeo Minamikawa
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan
| | - Keirei Uruma
- Department of Material and Biological Chemistry, Yamagata Univeristy, 1-4-12 Kojirakawa-mchi, Yamagata, Yamagata, 990-8560, Japan
| | - Katsuhiko Kanaizuka
- Department of Material and Biological Chemistry, Yamagata Univeristy, 1-4-12 Kojirakawa-mchi, Yamagata, Yamagata, 990-8560, Japan
| | - Masato Kurihara
- Department of Material and Biological Chemistry, Yamagata Univeristy, 1-4-12 Kojirakawa-mchi, Yamagata, Yamagata, 990-8560, Japan
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8
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Ozaki M, Yoshida S, Oura M, Tsuruoka T, Usui K. Effect of tryptophan residues on gold mineralization by a gold reducing peptide. RSC Adv 2020; 10:40461-40466. [PMID: 35520858 PMCID: PMC9057565 DOI: 10.1039/d0ra07098j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/17/2020] [Indexed: 11/21/2022] Open
Abstract
AuBP1, obtained by phage display selection, was previously shown to produce gold nanoparticles without reducing agents. The tryptophan (Trp) residue located at the N-terminus of this peptide contributes to the reduction of Au3+ to Au0 and is involved in the nucleation and crystal growth of gold nanoparticles. However, clear guidelines for relationships between the number of Trp residues in the peptide and its gold reducing ability have not been established. We focused on gold mineralization and attempted to elucidate aspects of the underlying mechanism. We performed a detailed evaluation of the effects of modifying the N-terminus of the core sequence on gold mineralization without reducing agents. Besides, advantages of utilizing peptides in manufacturing gold nanoparticles are shown. UV-Vis measurements, TEM observations, and kinetic analyses were used to show that increasing the number of Trp residues in the peptide increases the reducing ability, causing predominance of the nucleation reaction and the production of small gold nanoparticles. In addition, these peptides also had the ability as a dispersant to protect the surface of gold nanoparticles. Furthermore, the catalytic activity of mineralized gold nanoparticles with peptides was higher than that of a commercial gold nanoparticle. This study should help to elucidate the relationship between peptide sequence and mineralization ability for use in materials chemistry. Increasing the number of tryptophan (Trp) in peptides led to higher gold reducing ability and the peptides could disperse the generated gold-nanoparticles.![]()
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Affiliation(s)
- Makoto Ozaki
- Faculty of Frontiers of Innovative Research in Science and Technology (FIRST)
- Konan University
- Kobe
- Japan
| | - Shuhei Yoshida
- Faculty of Frontiers of Innovative Research in Science and Technology (FIRST)
- Konan University
- Kobe
- Japan
| | - Maho Oura
- Faculty of Frontiers of Innovative Research in Science and Technology (FIRST)
- Konan University
- Kobe
- Japan
| | - Takaaki Tsuruoka
- Faculty of Frontiers of Innovative Research in Science and Technology (FIRST)
- Konan University
- Kobe
- Japan
| | - Kenji Usui
- Faculty of Frontiers of Innovative Research in Science and Technology (FIRST)
- Konan University
- Kobe
- Japan
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9
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Shoshan MS, Vonderach T, Hattendorf B, Wennemers H. Peptide‐Coated Platinum Nanoparticles with Selective Toxicity against Liver Cancer Cells. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Michal S. Shoshan
- Laboratory of Organic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Thomas Vonderach
- Laboratory of Inorganic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Bodo Hattendorf
- Laboratory of Inorganic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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10
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Shoshan MS, Vonderach T, Hattendorf B, Wennemers H. Peptide‐Coated Platinum Nanoparticles with Selective Toxicity against Liver Cancer Cells. Angew Chem Int Ed Engl 2019; 58:4901-4905. [DOI: 10.1002/anie.201813149] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Michal S. Shoshan
- Laboratory of Organic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Thomas Vonderach
- Laboratory of Inorganic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Bodo Hattendorf
- Laboratory of Inorganic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, D-CHABETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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11
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Yu G, Vicini AC, Pieters RJ. Assembly of Divalent Ligands and Their Effect on Divalent Binding to Pseudomonas aeruginosa Lectin LecA. J Org Chem 2019; 84:2470-2488. [PMID: 30681333 PMCID: PMC6399674 DOI: 10.1021/acs.joc.8b02727] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
![]()
Divalent
ligands were prepared as inhibitors for the adhesion protein
of the problematic Pseudomonas aeruginosa pathogen.
Bridging two binding sites enables simultaneous binding of two galactose
moieties, which strongly enhances binding. An alternating motif of
glucose and triazole and aryl groups was shown to have the right mix
of rigidity, solubility, and ease of synthesis. Spacers were varied
with respect to the core unit as well as the aglycon portions in an
attempt to optimize dynamics and enhance interactions with the protein.
Affinities of the divalent ligands were measured by ITC, and Kd’s as low as 12 nM were determined,
notably for a compounds with either a rigid (phenyl) or flexible (butyl)
unit at the core. Introducing a phenyl aglycon moiety next to the
galactoside ligands on both termini did indeed lead to a higher enthalpy
of binding, which was more than compensated by entropic costs. The
results are discussed in terms of thermodynamics and theoretical calculations
of the expected and observed multivalency effects.
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Affiliation(s)
- Guangyun Yu
- Department of Chemical Biology & Drug Discovery , Utrecht Institute for Pharmaceutical Sciences, Utrecht University , P.O. Box 80082, 3508 TB Utrecht , The Netherlands
| | - Anna Chiara Vicini
- Department of Chemical Biology & Drug Discovery , Utrecht Institute for Pharmaceutical Sciences, Utrecht University , P.O. Box 80082, 3508 TB Utrecht , The Netherlands
| | - Roland J Pieters
- Department of Chemical Biology & Drug Discovery , Utrecht Institute for Pharmaceutical Sciences, Utrecht University , P.O. Box 80082, 3508 TB Utrecht , The Netherlands
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12
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Lewandowska U, Corra S, Zajaczkowski W, Ochs NAK, Shoshan MS, Tanabe J, Stappert S, Li C, Yashima E, Pisula W, Müllen K, Wennemers H. Positional Isomers of Chromophore-Peptide Conjugates Self-Assemble into Different Morphologies. Chemistry 2018; 24:12623-12629. [PMID: 29893493 DOI: 10.1002/chem.201801545] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/08/2018] [Indexed: 11/07/2022]
Abstract
Ordering π-systems into defined supramolecular structures is important for the development of organic functional materials. In recent years, peptides with defined secondary structures and/or self-assembly properties were introduced as powerful tools to order peptide-chromophore conjugates into different morphologies. This work explores whether or not the directionality of peptides can be used to control the self-assembly. The position of the π-system in conjugates between oligoprolines and perylene monoimide (PMI) chromophores was varied by attaching the PMI moiety to the second-to-last residue from the C- and N-termini, respectively. Microscopic and diffraction analysis revealed that the positional isomers form distinctly different supramolecular architectures that extend into the micrometer regime. NMR spectroscopic studies in solution phase allowed correlation of the self-assembly properties with markedly different conformational preferences of the isomeric building blocks. These insights enabled the design of building blocks with predictable self-assembly properties. Thus, the directionality of peptides offers exciting opportunities for controlling the self-assembly and electronic properties of π-systems.
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Affiliation(s)
- Urszula Lewandowska
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Stefano Corra
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | | | - Nellie A K Ochs
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Michal S Shoshan
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Junki Tanabe
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland.,Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Sebastian Stappert
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Chen Li
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Wojciech Pisula
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Institute of Physical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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13
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Zhao W, Sun H, Wang Y, Eastoe J, Dong S, Hao J. Self-Assembled Magnetic Viruslike Particles for Encapsulation and Delivery of Deoxyribonucleic Acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7171-7179. [PMID: 29809016 DOI: 10.1021/acs.langmuir.8b01445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Developing nontoxic artificial carriers for stimuli-responsive capture, transport, and delivery of biomolecules is of immense scientific interest. Herein, for the first time, we synthesize a double-tailed cationic surfactant, (C16H33)2(CH3)2N+[FeCl3Br]-, which possesses magnetic properties [magnetic surfactants (Mag-Surfs)]. The time-dependent formation of virus-shaped hybrid mixed assemblies of polyoxometalates (POMs) {Mo72Fe30}/Mag-Surf with hollow-shell structures is followed. These structures serve well as robust high-surface-area shuttles, which can be manipulated with applied magnetic fields. By using cationic Mag-Surfs, the anionic POMs and DNA can be complexed in these ternary mixtures. These virus-shaped complexes act as nanoanchors and nanomotors, which can be utilized for binding, anchoring, and delivery of biomolecules, such as DNA. It is found that they have a good absorption capacity for DNA and myoglobin over 24 h, after application of a magnetic field. The realization of magnetic virus-shaped {Mo72Fe30}/Mag-Surf spheres may open possibilities for designing other functional nanoparticles, allowing effective control over the delivery/separation of biomolecules.
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Affiliation(s)
- Wenrong Zhao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Hong Sun
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Yitong Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Julian Eastoe
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| | - Shuli Dong
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
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14
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Dobitz S, Aronoff MR, Wennemers H. Oligoprolines as Molecular Entities for Controlling Distance in Biological and Material Sciences. Acc Chem Res 2017; 50:2420-2428. [PMID: 28885830 DOI: 10.1021/acs.accounts.7b00340] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nature utilizes large biomolecules to fulfill tasks that require spatially well-defined arrangements at the molecular level such as electron transfer, ligand-receptor interactions, or catalysis. The creation of synthetic molecules that enable precise control over spacing and functionalization provides opportunities across diverse disciplines. Key requirements of functionalizable oligomeric scaffolds include the specific control of their molecular properties where the correct balance of flexibility and rigidity must be maintained in addition to the prerequisite of defined length. These molecules must ideally be equally applicable in aqueous and organic environments, they must be easy to synthesize in a controlled stepwise fashion, and they must be easily modified with a palette of chemical appendages having diverse functionalities. Oligoproline, a peptidic polymer comprised of repeating units of the amino acid proline, is an ideal platform to meet such challenges. Oligoproline derives its characteristic rigidity and well-defined secondary structure from the innate features of proline. It is the only naturally occurring amino acid that has its side-chain cyclized to its α-amino group, generating often-populated trans and cis conformers around the tertiary amide bonds formed in proline oligomers. Oligoprolines are widely applied to define distance on the molecular level as they are capable of serving as both a "molecular ruler" with a defined length and as a "molecular scaffold" with precisely located and predictably oriented substitutions along the polymeric backbone. Our investigations focus on the use of oligoproline as a molecular scaffold. Toward this end, we have investigated the role of solvent upon helical structure of oligoproline, and the effect that substituents on the pyrrolidine ring and the oligomer termini have on the stability of the helix. We have also further explored the molecular characteristics of oligoproline through spectroscopic and crystallographic methods. All of these structural insights laid the basis for implementation of oligoproline in materials science and chemical biology. Within this Account, we highlight the value of oligoprolines for applications in distinctly different research areas. Toward materials chemistry, we have utilized oligoprolines for the size-controlled generation of noble metal nanoparticles, and to probe the role of spatial preorganization of π-systems for molecular self-assembly. Within the biological realm, we have applied oligoprolines to probe the role of distance on G-protein coupled receptor-mediated ligand uptake by cancerous cells and to investigate the effects of charge preorganization on the efficacy of cationic cell-penetrating peptides.
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Affiliation(s)
- Stefanie Dobitz
- ETH Zürich, Laboratory of Organic Chemistry, D-CHAB, Vladimir-Prelog-Weg 3, CH-8093 Zürich, Switzerland
| | - Matthew R. Aronoff
- ETH Zürich, Laboratory of Organic Chemistry, D-CHAB, Vladimir-Prelog-Weg 3, CH-8093 Zürich, Switzerland
| | - Helma Wennemers
- ETH Zürich, Laboratory of Organic Chemistry, D-CHAB, Vladimir-Prelog-Weg 3, CH-8093 Zürich, Switzerland
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15
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Peptide mediated formation of noble metal nanoparticles — controlling size and spatial arrangement. Curr Opin Chem Biol 2017; 40:138-144. [DOI: 10.1016/j.cbpa.2017.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 09/01/2017] [Accepted: 09/01/2017] [Indexed: 02/02/2023]
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16
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Medina-Velo IA, Adisa I, Tamez C, Peralta-Videa JR, Gardea-Torresdey JL. Effects of Surface Coating on the Bioactivity of Metal-Based Engineered Nanoparticles: Lessons Learned from Higher Plants. BIOACTIVITY OF ENGINEERED NANOPARTICLES 2017. [DOI: 10.1007/978-981-10-5864-6_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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17
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Wang M, Zhang W, Zheng X, Zhu P. Antibacterial and catalytic activities of biosynthesized silver nanoparticles prepared by using an aqueous extract of green coffee bean as a reducing agent. RSC Adv 2017. [DOI: 10.1039/c6ra27706c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Spherical biogenic silver nanoparticles (AgNPs) were synthesized using aqueous green coffee bean extract as a reducing agent.
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Affiliation(s)
- Mengmeng Wang
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Jiangsu 225002
- PR China
| | - Wenjing Zhang
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Jiangsu 225002
- PR China
| | - Xuesong Zheng
- School of Perfume and Aroma Technology
- Shanghai Institute of Technology
- China
| | - Peizhi Zhu
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Jiangsu 225002
- PR China
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18
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Brahmi J, Aouadi K, Msaddek M, Praly JP, Vidal S. A stereoselective method for the synthesis of enantiopure 3-substituted 4-hydroxyproline derivatives via 1,3-dipolar cycloadditions. CR CHIM 2016. [DOI: 10.1016/j.crci.2016.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Pazos E, Sleep E, Rubert
Pérez C, Lee SS, Tantakitti F, Stupp SI. Nucleation and Growth of Ordered Arrays of Silver Nanoparticles on Peptide Nanofibers: Hybrid Nanostructures with Antimicrobial Properties. J Am Chem Soc 2016; 138:5507-10. [PMID: 27103596 PMCID: PMC4859321 DOI: 10.1021/jacs.6b01570] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Indexed: 12/23/2022]
Abstract
Silver nanoparticles have been of great interest as plasmonic substrates for sensing and imaging, catalysts, or antimicrobial systems. Their physical properties are strongly dependent on parameters that remain challenging to control such as size, chemical composition, and spatial distribution. We report here on supramolecular assemblies of a novel peptide amphiphile containing aldehyde functionality in order to reduce silver ions and subsequently nucleate silver metal nanoparticles in water. This system spontaneously generates monodisperse silver particles at fairly regular distances along the length of the filamentous organic assemblies. The metal-organic hybrid structures exhibited antimicrobial activity and significantly less toxicity toward eukaryotic cells. Metallized organic nanofibers of the type described here offer the possibility to create hydrogels, which integrate the useful functions of silver nanoparticles with controllable metallic content.
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Affiliation(s)
- Elena Pazos
- Simpson
Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Eduard Sleep
- Simpson
Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Charles
M. Rubert
Pérez
- Simpson
Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
| | - Sungsoo S. Lee
- Simpson
Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Chemistry, Department of Materials
Science and Engineering, Department of Medicine, and Department of
Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Faifan Tantakitti
- Simpson
Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Chemistry, Department of Materials
Science and Engineering, Department of Medicine, and Department of
Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Samuel I. Stupp
- Simpson
Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, United States
- Department of Chemistry, Department of Materials
Science and Engineering, Department of Medicine, and Department of
Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
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20
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Corra S, Lewandowska U, Benetti EM, Wennemers H. Size-Controlled Formation of Noble-Metal Nanoparticles in Aqueous Solution with a Thiol-Free Tripeptide. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Stefano Corra
- Laboratory of Organic Chemistry, D-CHAB; ETH Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Urszula Lewandowska
- Laboratory of Organic Chemistry, D-CHAB; ETH Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology, D-MATL; ETH Zürich; Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, D-CHAB; ETH Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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21
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Corra S, Lewandowska U, Benetti EM, Wennemers H. Size-Controlled Formation of Noble-Metal Nanoparticles in Aqueous Solution with a Thiol-Free Tripeptide. Angew Chem Int Ed Engl 2016; 55:8542-5. [PMID: 27098442 DOI: 10.1002/anie.201510337] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 03/23/2016] [Indexed: 11/09/2022]
Abstract
A combinatorial screening revealed the peptide H-His-d-Leu-d-Asp-NH2 (1) as an additive for the generation of monodisperse, water-soluble palladium nanoparticles with average diameters of 3 nm and stabilities of over 9 months. The tripeptide proved to be also applicable for the size-controlled formation of other noble-metal nanoparticles (Pt and Au). Studies with close analogues of peptide 1 revealed a specific role of each of the three amino acids for the formation and stabilization of the nanoparticles. These data combined with microscopic and spectroscopic analyses provided insight into the structure of the self-assembled peptidic monolayer around the metal core. The results open interesting prospects for the development of functionalized metal nanoparticles.
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Affiliation(s)
- Stefano Corra
- Laboratory of Organic Chemistry, D-CHAB, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Urszula Lewandowska
- Laboratory of Organic Chemistry, D-CHAB, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Edmondo M Benetti
- Laboratory for Surface Science and Technology, D-MATL, ETH Zürich, Vladimir-Prelog-Weg 5, 8093, Zürich, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, D-CHAB, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland.
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22
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Lewandowska U, Zajaczkowski W, Pisula W, Ma Y, Li C, Müllen K, Wennemers H. Effect of Structural Modifications on the Self-Assembly of Oligoprolines Conjugated with Sterically Demanding Chromophores. Chemistry 2016; 22:3804-9. [PMID: 26891419 DOI: 10.1002/chem.201504952] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Indexed: 12/14/2022]
Abstract
Conjugates between oligoprolines and sterically demanding perylene monoimides (PMIs) form hierarchical supramolecular self-assemblies. The influence of the length and stereochemistry at the attachment site between the peptide backbone and the chromophore on the self-assembly properties of the conjugates was explored. Comparison between oligoprolines bearing 4R- or 4S-configured azidoprolines (Azp) for the conjugation with the PMIs revealed that diastereoisomers with 4R configuration guide the self-assembly consistently better than conjugates with 4S configuration. Elongating the peptide chain beyond nine proline residues or introducing structural "errors", by altering the absolute configuration of one stereogenic center at the outside of the functionalizable oligoproline helix, lowered the efficacy of self-assembly significantly, both in solution phase and in the solid state. The results showed how subtle structural modifications allow for tuning the self-assembly of chromophores and provided further design principles for the development of peptide-chromophore conjugates into nanostructured materials.
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Affiliation(s)
- Urszula Lewandowska
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | | | - Wojciech Pisula
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
| | - Yingjie Ma
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Chen Li
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland.
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23
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Chopra R, Sharma K, Kumar M, Bhalla V. Pentacenequinone-Stabilized Silver Nanoparticles: A Reusable Catalyst for the Diels-Alder [4 + 2] Cycloaddition Reactions. J Org Chem 2016; 81:1039-46. [PMID: 26756525 DOI: 10.1021/acs.joc.5b02495] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Silver nanoparticles (AgNPs) stabilized by aggregates of derivative 4 have been used as catalyst for the construction of synthetically and biologically important [4 + 2] cycloadducts at room temperature.
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Affiliation(s)
- Radhika Chopra
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University , Amritsar, Punjab, India
| | - Kamaldeep Sharma
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University , Amritsar, Punjab, India
| | - Manoj Kumar
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University , Amritsar, Punjab, India
| | - Vandana Bhalla
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University , Amritsar, Punjab, India
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24
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Lin YJ, Chu LK, Horng JC. Effects of the Terminal Aromatic Residues on Polyproline Conformation: Thermodynamic and Kinetic Studies. J Phys Chem B 2015; 119:15796-806. [PMID: 26641495 DOI: 10.1021/acs.jpcb.5b08717] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In a peptide or protein, the sequence of aromatic residue-proline or proline-aromatic residue shows a high propensity in forming cis prolyl bonds due to aromatic-proline interactions. In this work, we designed and prepared the polyproline peptides with aromatic amino acids (F, Y, W) incorporated into their N-terminal or C-terminal end to investigate the effects of a terminal aromatic residue on polyproline conformation and the transition kinetics of polyproline I (PPI) to polyproline II (PPII) helices. Circular dichroism measurements reveal that the N-terminal aromatic-proline interaction imposes a more pronounced consequence on the forming propensity of PPI conformation than does the C-terminal aromatic-proline interaction in n-propanol. The propensity of forming PPI is correlated with the strength of aromatic-proline interactions in the order of Tyr-Pro > Trp-Pro > Phe-Pro. In aqueous solution, kinetic studies indicate that aromatic-substitution effects are nondirectional and indistinct on the PPI → PPII conversion rates, suggesting that aromatic-proline interactions may not be an important factor in this process. In addition, the temperature-dependent kinetics shows that the hydrophobicity of aromatic side chain may play a critical role affecting the activation enthalpy and entropy of the conversion of PPI to PPII, providing new insights into the folding of polyproline helices.
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Affiliation(s)
- Yu-Ju Lin
- Department of Chemistry, National Tsing Hua University , Hsinchu, Taiwan 30013, R.O.C
| | - Li-Kang Chu
- Department of Chemistry, National Tsing Hua University , Hsinchu, Taiwan 30013, R.O.C.,Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University , Hsinchu, Taiwan 30013, R.O.C
| | - Jia-Cherng Horng
- Department of Chemistry, National Tsing Hua University , Hsinchu, Taiwan 30013, R.O.C.,Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University , Hsinchu, Taiwan 30013, R.O.C
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25
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Martin V, Legrand B, Vezenkov LL, Berthet M, Subra G, Calmès M, Bantignies JL, Martinez J, Amblard M. Turning Peptide Sequences into Ribbon Foldamers by a Straightforward Multicyclization Reaction. Angew Chem Int Ed Engl 2015; 54:13966-70. [DOI: 10.1002/anie.201506955] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 08/26/2015] [Indexed: 12/19/2022]
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26
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Martin V, Legrand B, Vezenkov LL, Berthet M, Subra G, Calmès M, Bantignies J, Martinez J, Amblard M. Turning Peptide Sequences into Ribbon Foldamers by a Straightforward Multicyclization Reaction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Vincent Martin
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Lubomir L. Vezenkov
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Mathéo Berthet
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Gilles Subra
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Monique Calmès
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Jean‐Louis Bantignies
- LC2 ‐ UMR 5221 CNRS, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier (France)
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Muriel Amblard
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
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27
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Garbuio L, Lewandowski B, Wilhelm P, Ziegler L, Yulikov M, Wennemers H, Jeschke G. Shape Persistence of Polyproline II Helical Oligoprolines. Chemistry 2015; 21:10747-53. [PMID: 26089127 DOI: 10.1002/chem.201501190] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 11/06/2022]
Abstract
Oligoprolines are commonly used as molecular scaffolds. Past studies on the persistence length of their secondary structure, the polyproline II (PPII) helix, and on the fraction of backbone cis amide bonds have provided conflicting results. We resolved this debate by studying a series of spin-labeled proline octadecamers with EPR spectroscopy. Distance distributions between an N-terminal Gd(III) -DOTA (DOTA=1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) label and a nitroxide label at one of five evenly spaced backbone sites allowed us to discriminate between the flexibility of the PPII helix and the cis amide contributions. An upper limit of 2 % cis amide bonds per residue was found in a 7:3 (v/v) water/glycerol mixture, whereas cis amides were not observed in trifluoroethanol. Extrapolation of Monte Carlo models from the glass transition to ambient temperature predicts a persistence length of ≈3-3.5 nm in both solvents. The method is generally applicable to any type of oligomer for which the persistence length is of interest.
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Affiliation(s)
- Luca Garbuio
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Physical Chemistry, Vladimir Prelog Weg 2, 8093, Zurich (Switzerland)
| | - Bartosz Lewandowski
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland)
| | - Patrick Wilhelm
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland)
| | - Ludmila Ziegler
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland)
| | - Maxim Yulikov
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Physical Chemistry, Vladimir Prelog Weg 2, 8093, Zurich (Switzerland).
| | - Helma Wennemers
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland).
| | - Gunnar Jeschke
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Physical Chemistry, Vladimir Prelog Weg 2, 8093, Zurich (Switzerland).
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28
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Kracht S, Messerer M, Lang M, Eckhardt S, Lauz M, Grobéty B, Fromm KM, Giese B. Elektronentransfer in Peptiden: Bildung von Silbernanopartikeln. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Kracht S, Messerer M, Lang M, Eckhardt S, Lauz M, Grobéty B, Fromm KM, Giese B. Electron Transfer in Peptides: On the Formation of Silver Nanoparticles. Angew Chem Int Ed Engl 2015; 54:2912-6. [DOI: 10.1002/anie.201410618] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Indexed: 11/10/2022]
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30
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Wilhelm P, Lewandowski B, Trapp N, Wennemers H. A crystal structure of an oligoproline PPII-helix, at last. J Am Chem Soc 2014; 136:15829-32. [PMID: 25368901 DOI: 10.1021/ja507405j] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The first crystal structure of an oligoproline adopting an all-trans polyproline II (PPII) helix is presented. The high-resolution structure provides detailed insight into the dimensions and conformational properties of oligoprolines that are important for, e.g., their use as "molecular rulers" and "molecular scaffolds". The structure also showed that the amides interact with each other within a PPII helix and that water is not necessary for PPII helicity.
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Affiliation(s)
- Patrick Wilhelm
- Laboratory of Organic Chemistry, ETH Zurich , Vladimir-Prelog-Weg 3, CH-8093 Zurich, Switzerland
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31
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Lewandowska U, Zajaczkowski W, Chen L, Bouillière F, Wang D, Koynov K, Pisula W, Müllen K, Wennemers H. Hierarchical supramolecular assembly of sterically demanding π-systems by conjugation with oligoprolines. Angew Chem Int Ed Engl 2014; 53:12537-41. [PMID: 25303332 DOI: 10.1002/anie.201408279] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Indexed: 11/06/2022]
Abstract
Self-assembly from flexible worm-like threads via bundles of rigid fibers to nanosheets and nanotubes was achieved by covalent conjugation of perylene monoimide (PMI) chromophores with oligoprolines of increasing length. Whereas the chromophoric π-system and the peptidic building block do not self-aggregate, the covalent conjugates furnish well-ordered supramolecular structures with a common wall/fiber thickness. Their morphology is controlled by the number of repeat units and can be tuned by seemingly subtle structural modifications.
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Affiliation(s)
- Urszula Lewandowska
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich (Switzerland)
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32
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Lewandowska U, Zajaczkowski W, Chen L, Bouillière F, Wang D, Koynov K, Pisula W, Müllen K, Wennemers H. Hierarchical Supramolecular Assembly of Sterically Demanding π-Systems by Conjugation with Oligoprolines. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408279] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Kashmery HA, Clark AW, Dondi R, Fallows AJ, Cullis PM, Burley GA. Defining the Structural Parameters of Triazole Ligands in the Templated Synthesis of Silver Nanoparticles. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Heba A. Kashmery
- Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK http://www.burleylabs.co.uk http://www.strath.ac.uk/chemistry/staff/academic/glennburley/
| | - Alasdair W. Clark
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Oakfield Avenue, Glasgow, G12 8LT, UK
| | - Ruggero Dondi
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Andrew J. Fallows
- Department of Chemistry, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Paul M. Cullis
- Department of Chemistry, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Glenn A. Burley
- Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK http://www.burleylabs.co.uk http://www.strath.ac.uk/chemistry/staff/academic/glennburley/
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34
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Yang C, Jung S, Yi H. A biofabrication approach for controlled synthesis of silver nanoparticles with high catalytic and antibacterial activities. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2013.12.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Zotti MD, Formaggio F, Crisma M, Peggion C, Moretto A, Toniolo C. Handedness preference and switching of peptide helices. Part I: Helices based on protein amino acids. J Pept Sci 2014; 20:307-22. [DOI: 10.1002/psc.2638] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 12/20/2022]
Affiliation(s)
- Marta De Zotti
- Department of Chemistry; University of Padua; Padua Italy
| | | | | | | | | | - Claudio Toniolo
- Department of Chemistry; University of Padua; Padua Italy
- ICB, Padua Unit; CNR; Italy
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36
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Mondal S, Verma S. Catalytic and SERS Activities of Tryptophan-EDTA Capped Silver Nanoparticles. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201400056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Sharma VK, Siskova KM, Zboril R, Gardea-Torresdey JL. Organic-coated silver nanoparticles in biological and environmental conditions: fate, stability and toxicity. Adv Colloid Interface Sci 2014; 204:15-34. [PMID: 24406050 DOI: 10.1016/j.cis.2013.12.002] [Citation(s) in RCA: 211] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 10/24/2013] [Accepted: 12/04/2013] [Indexed: 02/07/2023]
Abstract
This review paper presents the overview of processes involved in transformation of organic-coated silver nanoparticles (AgNPs) in biological systems and in the aquatic environment. The coating on AgNPs greatly influences the fate, stability, and toxicity of AgNPs in aqueous solutions, biological systems, and the environment. Several organic-coated AgNP systems are discussed to understand their stability and toxicity in biological media and natural water. Examples are presented to demonstrate how a transformation of organic-coated AgNPs in an aqueous solution is affected by the type of coating, pH, kind of electrolyte (mono- or divalent), ionic strength, organic ligands (inorganic and organic), organic matter (fulvic and humic acids), redox conditions (oxic and anoxic), and light. Results of cytotoxicity, genotoxicity, and ecotoxicity of coated AgNPs to food chain members (plants, bacteria, and aquatic and terrestrial organisms) are reviewed. Key factors contributing to toxicity are the size, shape, surface coating, surface charge, and conditions of silver ion release. AgNPs may directly damage the cell membranes, disrupt ATP production and DNA replication, alternate gene expressions, release toxic Ag(+) ion, and produce reactive oxygen species to oxidize biological components of the cell. A progress made on understanding the mechanism of organic-coated AgNP toxicity using different analytical techniques is presented.
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38
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Rizzello L, Pompa PP. Nanosilver-based antibacterial drugs and devices: mechanisms, methodological drawbacks, and guidelines. Chem Soc Rev 2013; 43:1501-18. [PMID: 24292075 DOI: 10.1039/c3cs60218d] [Citation(s) in RCA: 457] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Despite the current advancement in drug discovery and pharmaceutical biotechnology, infection diseases induced by bacteria continue to be one of the greatest health problems worldwide, afflicting millions of people annually. Almost all microorganisms have, in fact, an intrinsic outstanding ability to flout many therapeutic interventions, thanks to their fast and easy-to-occur evolutionary genetic mechanisms. At the same time, big pharmaceutical companies are losing interest in new antibiotics development, shifting their capital investments in much more profitable research and development fields. New smart solutions are, thus, required to overcome such concerns, and should combine the feasibility of industrial production processes with cheapness and effectiveness. In this framework, nanotechnology-based solutions, and in particular silver nanoparticles (AgNPs), have recently emerged as promising candidates in the market as new antibacterial agents. AgNPs display, in fact, enhanced broad-range antibacterial/antiviral properties, and their synthesis procedures are quite cost effective. However, despite their increasing impact on the market, many relevant issues are still open. These include the molecular mechanisms governing the AgNPs-bacteria interactions, the physico-chemical parameters underlying their toxicity to prokaryotes, the lack of standardized methods and materials, and the uncertainty in the definition of general strategies to develop smart antibacterial drugs and devices based on nanosilver. In this review, we analyze the experimental data on the bactericidal effects of AgNPs, discussing the complex scenario and presenting the potential drawbacks and limitations in the techniques and methods employed. Moreover, after analyzing in depth the main mechanisms involved, we provide some general strategies/procedures to perform antibacterial tests of AgNPs, and propose some general guidelines for the design of antibacterial nanosystems and devices based on silver/nanosilver.
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Affiliation(s)
- Loris Rizzello
- Istituto Italiano di Tecnologia (IIT), Center for Bio-Molecular Nanotechnologies@UniLe, Via Barsanti, 73010 Arnesano (Lecce), Italy.
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39
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Pratsinis A, Hervella P, Leroux JC, Pratsinis SE, Sotiriou GA. Toxicity of silver nanoparticles in macrophages. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:2576-84. [PMID: 23418027 DOI: 10.1002/smll.201202120] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/02/2012] [Indexed: 05/23/2023]
Abstract
Silver nanoparticles (nanosilver) are broadly used today in textiles, food packaging, household devices and bioapplications, prompting a better understanding of their toxicity and biological interactions. In particular, the cytotoxicity of nanosilver with respect to mammalian cells remains unclear, because such investigations can be biased by the nanosilver coatings and the lack of particle size control. Here, nanosilver of well-defined size (5.7 to 20.4 nm) supported on inert nanostructured silica is produced using flame aerosol technology. The cytotoxicity of the prepared nanosilver with respect to murine macrophages is assessed in vitro because these cells are among the first to confront nanosilver upon its intake by mammals. The silica support facilitates the dispersion and stabilization of the prepared nanosilver in biological suspensions, and no other coating or functionalization is applied that could interfere with the biointeractions of nanosilver. Detailed characterization of the particles by X-ray diffraction and electron microscopy reveals that the size of the nanosilver is well controlled. Smaller nanosilver particles release or leach larger fractions of their mass as Ag⁺ ions upon dispersion in water. This strongly influences the cytotoxicity of the nanosilver when incubated with murine macrophages. The size of the nanosilver dictates its mode of cytotoxicity (Ag⁺ ion-specific and/or particle-specific). The toxicity of small nanosilver (<10 nm) is mostly mediated by the released Ag⁺ ions. The influence of such ions on the toxicity of nanosilver decreases with increasing nanosilver size (>10 nm). Direct silver nanoparticle-macrophage interactions dominate the nanosilver toxicity at sizes larger than 10 nm.
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Affiliation(s)
- Anna Pratsinis
- Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
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40
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Rossi M, Scheffler M, Blum V. Impact of Vibrational Entropy on the Stability of Unsolvated Peptide Helices with Increasing Length. J Phys Chem B 2013; 117:5574-84. [DOI: 10.1021/jp402087e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mariana Rossi
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Matthias Scheffler
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Volker Blum
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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41
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Eckhardt S, Brunetto PS, Gagnon J, Priebe M, Giese B, Fromm KM. Nanobio silver: its interactions with peptides and bacteria, and its uses in medicine. Chem Rev 2013; 113:4708-54. [PMID: 23488929 DOI: 10.1021/cr300288v] [Citation(s) in RCA: 504] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sonja Eckhardt
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.
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42
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Kolesinska B, Podwysocka DJ, Rueping MA, Seebach D, Kamena F, Walde P, Sauer M, Windschiegl B, Meyer-Ács M, Vor der Brüggen M, Giehring S. Permeation through Phospholipid Bilayers, Skin-Cell Penetration, Plasma Stability, and CD Spectra ofα- andβ-Oligoproline Derivatives. Chem Biodivers 2013; 10:1-38. [DOI: 10.1002/cbdv.201200393] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Indexed: 11/06/2022]
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43
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Rai S, Singh H. Electronic structure theory based study of proline interacting with gold nano clusters. J Mol Model 2012; 19:4099-109. [DOI: 10.1007/s00894-012-1711-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 11/26/2012] [Indexed: 11/28/2022]
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44
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Kramer RA, Bleicher KH, Wennemers H. Design and Synthesis of Nucleoproline Amino Acids for the Straightforward Preparation of Chiral and Conformationally Constrained Nucleopeptides. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200557] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Stodulski M, Gulder T. Nanoparticles and Peptides: A Fruitful Liaison for Biomimetic Catalysis. Angew Chem Int Ed Engl 2012; 51:11202-4. [DOI: 10.1002/anie.201206373] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Indexed: 11/08/2022]
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46
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Stodulski M, Gulder T. Nanopartikel und Peptide: eine vielversprechende Liaison für die biomimetische Katalyse. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Wennemers H. Peptides as asymmetric catalysts and templates for the controlled formation of Ag nanoparticles. J Pept Sci 2012; 18:437-41. [DOI: 10.1002/psc.2422] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 05/07/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Helma Wennemers
- Laboratory of Organic Chemistry; ETH Zurich; Wolfgang-Pauli-Strasse 10 CH-8093 Zurich Switzerland
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