201
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Leira-Iglesias J, Tassoni A, Adachi T, Stich M, Hermans TM. Oscillations, travelling fronts and patterns in a supramolecular system. NATURE NANOTECHNOLOGY 2018; 13:1021-1027. [PMID: 30323361 DOI: 10.1038/s41565-018-0270-4] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 09/03/2018] [Indexed: 05/24/2023]
Abstract
Supramolecular polymers, such as microtubules, operate under non-equilibrium conditions to drive crucial functions in cells, such as motility, division and organelle transport1. In vivo and in vitro size oscillations of individual microtubules2,3 (dynamic instabilities) and collective oscillations4 have been observed. In addition, dynamic spatial structures, like waves and polygons, can form in non-stirred systems5. Here we describe an artificial supramolecular polymer made of a perylene diimide derivative that displays oscillations, travelling fronts and centimetre-scale self-organized patterns when pushed far from equilibrium by chemical fuels. Oscillations arise from a positive feedback due to nucleation-elongation-fragmentation, and a negative feedback due to size-dependent depolymerization. Travelling fronts and patterns form due to self-assembly induced density differences that cause system-wide convection. In our system, the species responsible for the nonlinear dynamics and those that self-assemble are one and the same. In contrast, other reported oscillating assemblies formed by vesicles6, micelles7 or particles8 rely on the combination of a known chemical oscillator and a stimuli-responsive system, either by communication through the solvent (for example, by changing pH7-9), or by anchoring one of the species covalently (for example, a Belousov-Zhabotinsky catalyst6,10). The design of self-oscillating supramolecular polymers and large-scale dissipative structures brings us closer to the creation of more life-like materials11 that respond to external stimuli similarly to living cells, or to creating artificial autonomous chemical robots12.
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Affiliation(s)
| | | | - Takuji Adachi
- University of Strasbourg, CNRS, ISIS UMR 7006, Strasbourg, France
| | - Michael Stich
- Non-linearity and Complexity Research Group, Systems Analytics Research Institute, Engineering and Applied Science, Aston University, Birmingham, UK
| | - Thomas M Hermans
- University of Strasbourg, CNRS, ISIS UMR 7006, Strasbourg, France.
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202
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Rodríguez-Arco L, Poma A, Ruiz-Pérez L, Scarpa E, Ngamkham K, Battaglia G. Molecular bionics - engineering biomaterials at the molecular level using biological principles. Biomaterials 2018; 192:26-50. [PMID: 30419394 DOI: 10.1016/j.biomaterials.2018.10.044] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 10/06/2018] [Accepted: 10/28/2018] [Indexed: 12/18/2022]
Abstract
Life and biological units are the result of the supramolecular arrangement of many different types of molecules, all of them combined with exquisite precision to achieve specific functions. Taking inspiration from the design principles of nature allows engineering more efficient and compatible biomaterials. Indeed, bionic (from bion-, unit of life and -ic, like) materials have gained increasing attention in the last decades due to their ability to mimic some of the characteristics of nature systems, such as dynamism, selectivity, or signalling. However, there are still many challenges when it comes to their interaction with the human body, which hinder their further clinical development. Here we review some of the recent progress in the field of molecular bionics with the final aim of providing with design rules to ensure their stability in biological media as well as to engineer novel functionalities which enable navigating the human body.
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Affiliation(s)
- Laura Rodríguez-Arco
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK.
| | - Alessandro Poma
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK
| | - Lorena Ruiz-Pérez
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK; The EPRSC/Jeol Centre of Liquid Electron Microscopy, University College London, London, WC1H 0AJ, UK
| | - Edoardo Scarpa
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK
| | - Kamolchanok Ngamkham
- Faculty of Engineering, King Mongkut's University of Technology Thonbury, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok, 10140, Thailand
| | - Giuseppe Battaglia
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK; The EPRSC/Jeol Centre of Liquid Electron Microscopy, University College London, London, WC1H 0AJ, UK.
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203
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Helwig B, van Sluijs B, Pogodaev AA, Postma SGJ, Huck WTS. Bottom-Up Construction of an Adaptive Enzymatic Reaction Network. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806944] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Britta Helwig
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Bob van Sluijs
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Aleksandr A. Pogodaev
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Sjoerd G. J. Postma
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Wilhelm T. S. Huck
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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204
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Helwig B, van Sluijs B, Pogodaev AA, Postma SGJ, Huck WTS. Bottom-Up Construction of an Adaptive Enzymatic Reaction Network. Angew Chem Int Ed Engl 2018; 57:14065-14069. [DOI: 10.1002/anie.201806944] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/13/2018] [Indexed: 01/23/2023]
Affiliation(s)
- Britta Helwig
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Bob van Sluijs
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Aleksandr A. Pogodaev
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Sjoerd G. J. Postma
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Wilhelm T. S. Huck
- Radboud University; Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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205
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Ragazzon G, Prins LJ. Energy consumption in chemical fuel-driven self-assembly. NATURE NANOTECHNOLOGY 2018; 13:882-889. [PMID: 30224796 DOI: 10.1038/s41565-018-0250-8] [Citation(s) in RCA: 242] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/30/2018] [Indexed: 05/24/2023]
Abstract
Nature extensively exploits high-energy transient self-assembly structures that are able to perform work through a dissipative process. Often, self-assembly relies on the use of molecules as fuel that is consumed to drive thermodynamically unfavourable reactions away from equilibrium. Implementing this kind of non-equilibrium self-assembly process in synthetic systems is bound to profoundly impact the fields of chemistry, materials science and synthetic biology, leading to innovative dissipative structures able to convert and store chemical energy. Yet, despite increasing efforts, the basic principles underlying chemical fuel-driven dissipative self-assembly are often overlooked, generating confusion around the meaning and definition of scientific terms, which does not favour progress in the field. The scope of this Perspective is to bring closer together current experimental approaches and conceptual frameworks. From our analysis it also emerges that chemically fuelled dissipative processes may have played a crucial role in evolutionary processes.
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Affiliation(s)
- Giulio Ragazzon
- Department of Chemical Sciences, University of Padova, Padova, Italy
| | - Leonard J Prins
- Department of Chemical Sciences, University of Padova, Padova, Italy.
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206
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Kim Y, Koo J, Hwang IC, Mukhopadhyay RD, Hong S, Yoo J, Dar AA, Kim I, Moon D, Shin TJ, Ko YH, Kim K. Rational Design and Construction of Hierarchical Superstructures Using Shape-Persistent Organic Cages: Porphyrin Box-Based Metallosupramolecular Assemblies. J Am Chem Soc 2018; 140:14547-14551. [DOI: 10.1021/jacs.8b08030] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Younghoon Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Jaehyoung Koo
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - In-Chul Hwang
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Rahul Dev Mukhopadhyay
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Soonsang Hong
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Jejoong Yoo
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Ajaz Ahmad Dar
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Ikjin Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Dohyun Moon
- Supramolecule Crystallography, Pohang Light Source II, Pohang 37673, Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facilities & School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Young Ho Ko
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Kimoon Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
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207
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Pierini F, Nakielski P, Urbanek O, Pawłowska S, Lanzi M, De Sio L, Kowalewski TA. Polymer-Based Nanomaterials for Photothermal Therapy: From Light-Responsive to Multifunctional Nanoplatforms for Synergistically Combined Technologies. Biomacromolecules 2018; 19:4147-4167. [DOI: 10.1021/acs.biomac.8b01138] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | | | | | - Massimiliano Lanzi
- Department of Industrial Chemistry “Toso Montanari”, Alma Mater Studiorum-University of Bologna, 40136 Bologna, Italy
| | - Luciano De Sio
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 04100 Latina, Italy
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208
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Falasco G, Rao R, Esposito M. Information Thermodynamics of Turing Patterns. PHYSICAL REVIEW LETTERS 2018; 121:108301. [PMID: 30240244 DOI: 10.1103/physrevlett.121.108301] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/15/2018] [Indexed: 05/03/2023]
Abstract
We set up a rigorous thermodynamic description of reaction-diffusion systems driven out of equilibrium by time-dependent space-distributed chemostats. Building on the assumption of local equilibrium, nonequilibrium thermodynamic potentials are constructed exploiting the symmetries of the chemical network topology. It is shown that the canonical (resp. semigrand canonical) nonequilibrium free energy works as a Lyapunov function in the relaxation to equilibrium of a closed (resp. open) system, and its variation provides the minimum amount of work needed to manipulate the species concentrations. The theory is used to study analytically the Turing pattern formation in a prototypical reaction-diffusion system, the one-dimensional Brusselator model, and to classify it as a genuine thermodynamic nonequilibrium phase transition.
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Affiliation(s)
- Gianmaria Falasco
- Complex Systems and Statistical Mechanics, Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg
| | - Riccardo Rao
- Complex Systems and Statistical Mechanics, Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg
| | - Massimiliano Esposito
- Complex Systems and Statistical Mechanics, Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg
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209
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Te Brinke E, Groen J, Herrmann A, Heus HA, Rivas G, Spruijt E, Huck WTS. Dissipative adaptation in driven self-assembly leading to self-dividing fibrils. NATURE NANOTECHNOLOGY 2018; 13:849-855. [PMID: 30013214 DOI: 10.1038/s41565-018-0192-1] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 06/11/2018] [Indexed: 05/24/2023]
Abstract
Out-of-equilibrium self-assembly of proteins such as actin and tubulin is a key regulatory process controlling cell shape, motion and division. The design of functional nanosystems based on dissipative self-assembly has proven to be remarkably difficult due to a complete lack of control over the spatial and temporal characteristics of the assembly process. Here, we show the dissipative self-assembly of FtsZ protein (a bacterial homologue of tubulin) within coacervate droplets. More specifically, we show how such barrier-free compartments govern the local availability of the energy-rich building block guanosine triphosphate, yielding highly dynamic fibrils. The increased flux of FtsZ monomers at the tips of the fibrils results in localized FtsZ assembly, elongation of the coacervate compartments, followed by division of the fibrils into two. We rationalize the directional growth and division of the fibrils using dissipative reaction-diffusion kinetics and capillary action of the filaments as main inputs. The principle presented here, in which open compartments are used to modulate the rates of dissipative self-assembly by restricting the absorption of energy from the environment, may provide a general route to dissipatively adapting nanosystems exhibiting life-like behaviour.
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Affiliation(s)
- Esra Te Brinke
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Joost Groen
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Andreas Herrmann
- DWI Leibniz Institute for Interactive Materials, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Hans A Heus
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Germán Rivas
- Systems Biochemistry Lab, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
| | - Evan Spruijt
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands.
| | - Wilhelm T S Huck
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands.
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210
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Nouri M, Esfahanizadeh N, Shahpar MG, Attar F, Sartipnia N, Akhtari K, Saboury AA, Falahati M. Cobalt oxide nanoparticles mediate tau denaturation and cytotoxicity against PC-12 cell line. Int J Biol Macromol 2018; 118:1763-1772. [PMID: 30017981 DOI: 10.1016/j.ijbiomac.2018.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/05/2018] [Accepted: 07/07/2018] [Indexed: 12/19/2022]
Abstract
It has not been well explored how NPs may induce some adverse effects on the biological systems. In this research, the interaction of cobalt oxide NPs (Co3O4 NPs) with tau protein and PC-12 cell line, as nervous system models, was investigated with several approaches including fluorescence spectroscopy, CD spectroscopy, docking study, MTT, LDH, AO/EB dual staining, and flow cytometry assays. Fluorescence investigation displayed that Co3O4 NPs spontaneously mediate the formation of a static complex with tau protein through hydrogen bonds and van der Waals forces. Docking study also revealed that Ser and Gln residues play important roles in the formation of hydrogen bonds between tau and Co3O4 NPs. Far UV-CD measurement determined that Co3O4 NPs changed the unfolded structure of tau protein toward a more folded conformation. Moreover, Co3O4 NPs demonstrated to stimulate the reduction of PC-12 cell viability through membrane leakage, fragmentation of DNA, apoptosis, and necrosis. In conclusion, Co3O4 NPs may trigger marked alterations on the tertiary and secondary structure of tau protein. Also, the dose of Co3O4 NPs is the crucial factor which induces their adverse effects on the cells. Because, all side effects of NPs are not well explored, additional detailed experiments are more needed.
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Affiliation(s)
- Mina Nouri
- Department of Cellular and Molecular Biology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran
| | - Narges Esfahanizadeh
- Department of Cellular and Molecular Biology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran
| | - Mahsa Ghofrani Shahpar
- Department of Cellular and Molecular Biology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran
| | - Farnoosh Attar
- Department of Biology, Faculty of Food Industry & Agriculture, Standard Research Institute (SRI), Karaj, Iran
| | - Nasrin Sartipnia
- Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - Keivan Akhtari
- Department of Physics, University of Kurdistan, P.O. Box 416, Sanandaj, Iran
| | - Ali Akbar Saboury
- Inistitite of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University of Tehran (IAUPS), Iran.
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211
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Vantomme G, Gelebart AH, Broer DJ, Meijer EW. Self-sustained actuation from heat dissipation in liquid crystal polymer networks. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2018; 56:1331-1336. [PMID: 29937627 PMCID: PMC6001434 DOI: 10.1002/pola.29032] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/07/2018] [Indexed: 12/25/2022]
Abstract
Liquid crystal polymer networks (LCNs) lead the research geared toward macroscopic motion of materials. These actuators are molecularly programed to adapt their shape in response to external stimuli. Non-photo-responsive thin films of LCNs covered with heat absorbers (e.g., graphene or ink) are shown to continuously oscillate when exposed to light. The motion is governed by the heat dissipated at the film surface and the anisotropic thermal deformation of the network. The influence of the LC molecular alignment, the film thickness, and the LC matrix on the macroscopic motion is analyzed to probe the limits of the system. The insights gained from these experiments provide not only guidelines to create actuators by photo-thermal or pure photo-effects but also a simple method to generate mechanical oscillators for soft robotics and automated systems. © 2018 The Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 1331-1336.
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Affiliation(s)
- Ghislaine Vantomme
- Institute for Complex Molecular Systems (ICMS), Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
- Department of Chemical Engineering and ChemistryLaboratory of Macromolecular and Organic Chemistry, Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
| | - Anne Helene Gelebart
- Institute for Complex Molecular Systems (ICMS), Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
- Department of Chemical Engineering and Chemistry, Laboratory for Functional Organic Materials and Devices (SFD)Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
| | - Dirk Jan Broer
- Institute for Complex Molecular Systems (ICMS), Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
- Department of Chemical Engineering and Chemistry, Laboratory for Functional Organic Materials and Devices (SFD)Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
| | - E. W. Meijer
- Institute for Complex Molecular Systems (ICMS), Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
- Department of Chemical Engineering and ChemistryLaboratory of Macromolecular and Organic Chemistry, Technical University of Eindhoven, 5600 MBEindhovenThe Netherlands
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212
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Herget K, Frerichs H, Pfitzner F, Tahir MN, Tremel W. Functional Enzyme Mimics for Oxidative Halogenation Reactions that Combat Biofilm Formation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707073. [PMID: 29920781 DOI: 10.1002/adma.201707073] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/18/2018] [Indexed: 06/08/2023]
Abstract
Transition-metal oxide nanoparticles and molecular coordination compounds are highlighted as functional mimics of halogenating enzymes. These enzymes are involved in halometabolite biosynthesis. Their activity is based upon the formation of hypohalous acids from halides and hydrogen peroxide or oxygen, which form bioactive secondary metabolites of microbial origin with strong antibacterial and antifungal activities in follow-up reactions. Therefore, enzyme mimics and halogenating enzymes may be valuable tools to combat biofilm formation. Here, halogenating enzyme models are briefly described, enzyme mimics are classified according to their catalytic functions, and current knowledge about the settlement chemistry and adhesion of fouling organisms is summarized. Enzyme mimics with the highest potential are showcased. They may find application in antifouling coatings, indoor and outdoor paints, polymer membranes for water desalination, or in aquacultures, but also on surfaces for food packaging, door handles, hand rails, push buttons, keyboards, and other elements made of plastic where biofilms are present. The use of natural compounds, formed in situ with nontoxic and abundant metal oxide enzyme mimics, represents a novel and efficient "green" strategy to emulate and utilize a natural defense system for preventing bacterial colonization and biofilm growth.
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Affiliation(s)
- Karoline Herget
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55128, Mainz, Germany
| | - Hajo Frerichs
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55128, Mainz, Germany
| | - Felix Pfitzner
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55128, Mainz, Germany
| | - Muhammad Nawaz Tahir
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55128, Mainz, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55128, Mainz, Germany
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213
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Wang G, Sun J, An L, Liu S. Fuel-Driven Dissipative Self-Assembly of a Supra-Amphiphile in Batch Reactor. Biomacromolecules 2018; 19:2542-2548. [PMID: 29712421 DOI: 10.1021/acs.biomac.8b00171] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Dissipative self-assembly is an intriguing but challenging research topic in chemistry, materials science, physics, and biology because most functional self-assembly in nature, such as the organization and operation of cells, is actually an out-of-equilibrium system driven by energy dissipation. In this article, we successfully fabricated an I2-responsive supra-amphiphile by a PEGylated poly(amino acid) and realize its dissipative self-assembly in batch reactor by coupling it with the redox reaction between NaIO3 and thiourea, in which I2 is an intermediate product. The formation and dissipative self-assembly of the supra-amphiphile can be repeatedly initiated by adding the mixture of NaIO3 and thiourea, which herein acts as "chemical fuel", while the lifetime of the transient nanostructures formed by the dissipative self-assembly is easily tuned by altering thiourea concentration in the "chemical fuel". Furthermore, as an application demo, the dissipative self-assembly of the supra-amphiphile is examined to control dispersion of multiwalled carbon nanotubes in water, exhibiting a good performance of organic pollutant removal.
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Affiliation(s)
- Guangtong Wang
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin , China 150090.,Micro- and Nanotechnology Research Center , Harbin Institute of Technology , Harbin , China 150080
| | - Jinzhi Sun
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin , China 150090
| | - Li An
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin , China 150090
| | - Shaoqin Liu
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin , China 150090.,Micro- and Nanotechnology Research Center , Harbin Institute of Technology , Harbin , China 150080
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214
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Kumar M, Ing NL, Narang V, Wijerathne NK, Hochbaum AI, Ulijn RV. Amino-acid-encoded biocatalytic self-assembly enables the formation of transient conducting nanostructures. Nat Chem 2018; 10:696-703. [PMID: 29713031 DOI: 10.1038/s41557-018-0047-2] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 03/14/2018] [Indexed: 12/11/2022]
Abstract
Aqueous compatible supramolecular materials hold promise for applications in environmental remediation, energy harvesting and biomedicine. One remaining challenge is to actively select a target structure from a multitude of possible options, in response to chemical signals, while maintaining constant, physiological conditions. Here, we demonstrate the use of amino acids to actively decorate a self-assembling core molecule in situ, thereby controlling its amphiphilicity and consequent mode of assembly. The core molecule is the organic semiconductor naphthalene diimide, functionalized with D- and L- tyrosine methyl esters as competing reactive sites. In the presence of α-chymotrypsin and a selected encoding amino acid, kinetic competition between ester hydrolysis and amidation results in covalent or non-covalent amino acid incorporation, and variable supramolecular self-assembly pathways. Taking advantage of the semiconducting nature of the naphthalene diimide core, electronic wires could be formed and subsequently degraded, giving rise to temporally regulated electro-conductivity.
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Affiliation(s)
- Mohit Kumar
- Advanced Science Research Center, Graduate Center, City University of New York, New York, NY, USA
| | - Nicole L Ing
- Department of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, CA, USA
| | - Vishal Narang
- Advanced Science Research Center, Graduate Center, City University of New York, New York, NY, USA
| | - Nadeesha K Wijerathne
- Advanced Science Research Center, Graduate Center, City University of New York, New York, NY, USA.,Department of Chemistry, Hunter College, City University of New York, New York, NY, USA.,Biochemistry and Chemistry Ph.D. Programs, The Graduate Center of the City University of New York, New York, NY, USA
| | - Allon I Hochbaum
- Department of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, CA, USA.,Department of Chemistry, University of California, Irvine, Irvine, CA, USA
| | - Rein V Ulijn
- Advanced Science Research Center, Graduate Center, City University of New York, New York, NY, USA. .,Department of Chemistry, Hunter College, City University of New York, New York, NY, USA. .,Biochemistry and Chemistry Ph.D. Programs, The Graduate Center of the City University of New York, New York, NY, USA.
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215
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Korschelt K, Tahir MN, Tremel W. A Step into the Future: Applications of Nanoparticle Enzyme Mimics. Chemistry 2018; 24:9703-9713. [DOI: 10.1002/chem.201800384] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Karsten Korschelt
- Institut für Anorganische Chemie und Analytische Chemie; Johannes-Gutenberg-Universität; Duesbergweg 10-14 55128 Mainz Germany
| | - Muhammad Nawaz Tahir
- Department of Chemistry; King Fahd University of Petroleum and Minerals; Kingdom of Saudi Arabia
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie; Johannes-Gutenberg-Universität; Duesbergweg 10-14 55128 Mainz Germany
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216
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Dhiman S, George SJ. Temporally Controlled Supramolecular Polymerization. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170433] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shikha Dhiman
- Supramolecular Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India-560064
| | - Subi J. George
- Supramolecular Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India-560064
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217
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Zhang Y, Tsitkov S, Hess H. Complex dynamics in a two-enzyme reaction network with substrate competition. Nat Catal 2018. [DOI: 10.1038/s41929-018-0053-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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218
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Wang X, Pu J, An B, Li Y, Shang Y, Ning Z, Liu Y, Ba F, Zhang J, Zhong C. Programming Cells for Dynamic Assembly of Inorganic Nano-Objects with Spatiotemporal Control. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705968. [PMID: 29516606 DOI: 10.1002/adma.201705968] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/25/2017] [Indexed: 05/24/2023]
Abstract
Programming living cells to organize inorganic nano-objects (NOs) in a spatiotemporally precise fashion would advance new techniques for creating ordered ensembles of NOs and new bio-abiotic hybrid materials with emerging functionalities. Bacterial cells often grow in cellular communities called biofilms. Here, a strategy is reported for programming dynamic biofilm formation for the synchronized assembly of discrete NOs or hetero-nanostructures on diverse interfaces in a dynamic, scalable, and hierarchical fashion. By engineering Escherichia coli to sense blue light and respond by producing biofilm curli fibers, biofilm formation is spatially controlled and the patterned NOs' assembly is simultaneously achieved. Diverse and complex fluorescent quantum dot patterns with a minimum patterning resolution of 100 µm are demonstrated. By temporally controlling the sequential addition of NOs into the culture, multilayered heterostructured thin films are fabricated through autonomous layer-by-layer assembly. It is demonstrated that biologically dynamic self-assembly can be used to advance a new repertoire of nanotechnologies and materials with increasing complexity that would be otherwise challenging to produce.
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Affiliation(s)
- Xinyu Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiahua Pu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Bolin An
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Shanghai Institute Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yingfeng Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuequn Shang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhijun Ning
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Yi Liu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Fang Ba
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Jiaming Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Chao Zhong
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
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219
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Scioli Montoto S, Sbaraglini ML, Talevi A, Couyoupetrou M, Di Ianni M, Pesce GO, Alvarez VA, Bruno-Blanch LE, Castro GR, Ruiz ME, Islan GA. Carbamazepine-loaded solid lipid nanoparticles and nanostructured lipid carriers: Physicochemical characterization and in vitro/in vivo evaluation. Colloids Surf B Biointerfaces 2018; 167:73-81. [PMID: 29627680 DOI: 10.1016/j.colsurfb.2018.03.052] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/21/2018] [Accepted: 03/30/2018] [Indexed: 01/16/2023]
Abstract
Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) represent promising alternatives for drug delivery to the central nervous system. In the present work, four different nanoformulations of the antiepileptic drug Carbamazepine (CBZ) were designed and prepared by the homogenization/ultrasonication method, with encapsulation efficiencies ranging from 82.8 to 93.8%. The formulations remained stable at 4 °C for at least 3 months. Physicochemical and microscopic characterization were performed by photon correlation spectroscopy (PCS), transmission electron microscopy (TEM), atomic force microscopy (AFM); thermal properties by differential scanning calorimetry (DSC), thermogravimetry (TGA) and X-ray diffraction analysis (XRD). The results indicated the presence of spherical shape nanoparticles with a mean particle diameter around 160 nm in a narrow size distribution; the entrapped CBZ displayed an amorphous state. The in vitro release profile of CBZ fitted into a Baker-Lonsdale model for spherical matrices and almost the 100% of the encapsulated drug was released in a controlled manner during the first 24 h. The apparent permeability of CBZ-loaded nanoparticles through a cell monolayer model was similar to that of the free drug. In vivo experiments in a mice model of seizure suggested protection by CBZ-NLC against seizures for at least 2 h after intraperitoneal administration. The developed CBZ-loaded lipid nanocarriers displayed optimal characteristics of size, shape and drug release and possibly represent a promising tool to improve the treatment of refractory epilepsy linked to efflux transporters upregulation.
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Affiliation(s)
- S Scioli Montoto
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina
| | - M L Sbaraglini
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina
| | - A Talevi
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina
| | - M Couyoupetrou
- Departamento de Farmacología, Instituto Nacional de Medicamentos (INAME), Administración Nacional de Medicamentos, Alimentos y Tecnología Médica (ANMAT), CABA, Buenos Aires, Argentina
| | - M Di Ianni
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina
| | - G O Pesce
- Departamento de Farmacología, Instituto Nacional de Medicamentos (INAME), Administración Nacional de Medicamentos, Alimentos y Tecnología Médica (ANMAT), CABA, Buenos Aires, Argentina
| | - V A Alvarez
- Grupo de Materiales Compuestos de Matriz Polimérica (CoMP), Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería, Universidad Nacional de Mar del Plata (UNMDP) - CONICET, Solis 7575, B7608FDQ, Mar del Plata, Buenos Aires, Argentina
| | - L E Bruno-Blanch
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina
| | - G R Castro
- Laboratorio de Nanobiomateriales, CINDEFI, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) -CONICET (CCT La Plata), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina
| | - M E Ruiz
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina.
| | - G A Islan
- Laboratorio de Nanobiomateriales, CINDEFI, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) -CONICET (CCT La Plata), Calle 47 y 115, B1900AJI, La Plata, Buenos Aires, Argentina.
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220
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Biomimetic artificial organelles with in vitro and in vivo activity triggered by reduction in microenvironment. Nat Commun 2018; 9:1127. [PMID: 29555899 PMCID: PMC5859287 DOI: 10.1038/s41467-018-03560-x] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 02/23/2018] [Indexed: 12/16/2022] Open
Abstract
Despite tremendous efforts to develop stimuli-responsive enzyme delivery systems, their efficacy has been mostly limited to in vitro applications. Here we introduce, by using an approach of combining biomolecules with artificial compartments, a biomimetic strategy to create artificial organelles (AOs) as cellular implants, with endogenous stimuli-triggered enzymatic activity. AOs are produced by inserting protein gates in the membrane of polymersomes containing horseradish peroxidase enzymes selected as a model for natures own enzymes involved in the redox homoeostasis. The inserted protein gates are engineered by attaching molecular caps to genetically modified channel porins in order to induce redox-responsive control of the molecular flow through the membrane. AOs preserve their structure and are activated by intracellular glutathione levels in vitro. Importantly, our biomimetic AOs are functional in vivo in zebrafish embryos, which demonstrates the feasibility of using AOs as cellular implants in living organisms. This opens new perspectives for patient-oriented protein therapy. The efficacy of stimuli-responsive enzyme delivery systems is usually limited to in vitro applications. Here the authors form artificial organelles by inserting stimuli-responsive protein gates in membranes of polymersomes loaded with enzymes and obtain a triggered functionality both in vitro and in vivo.
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221
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Grzybowski BA, Fitzner K, Paczesny J, Granick S. From dynamic self-assembly to networked chemical systems. Chem Soc Rev 2018; 46:5647-5678. [PMID: 28703815 DOI: 10.1039/c7cs00089h] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Although dynamic self-assembly, DySA, is a relatively new area of research, the past decade has brought numerous demonstrations of how various types of components - on scales from (macro)molecular to macroscopic - can be arranged into ordered structures thriving in non-equilibrium, steady states. At the same time, none of these dynamic assemblies has so far proven practically relevant, prompting questions about the field's prospects and ultimate objectives. The main thesis of this Review is that formation of dynamic assemblies cannot be an end in itself - instead, we should think more ambitiously of using such assemblies as control elements (reconfigurable catalysts, nanomachines, etc.) of larger, networked systems directing sequences of chemical reactions or assembly tasks. Such networked systems would be inspired by biology but intended to operate in environments and conditions incompatible with living matter (e.g., in organic solvents, elevated temperatures, etc.). To realize this vision, we need to start considering not only the interactions mediating dynamic self-assembly of individual components, but also how components of different types could coexist and communicate within larger, multicomponent ensembles. Along these lines, the review starts with the discussion of the conceptual foundations of self-assembly in equilibrium and non-equilibrium regimes. It discusses key examples of interactions and phenomena that can provide the basis for various DySA modalities (e.g., those driven by light, magnetic fields, flows, etc.). It then focuses on the recent examples where organization of components in steady states is coupled to other processes taking place in the system (catalysis, formation of dynamic supramolecular materials, control of chirality, etc.). With these examples of functional DySA, we then look forward and consider conditions that must be fulfilled to allow components of multiple types to coexist, function, and communicate with one another within the networked DySA systems of the future. As the closing examples show, such systems are already appearing heralding new opportunities - and, to be sure, new challenges - for DySA research.
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Affiliation(s)
- Bartosz A Grzybowski
- IBS Center for Soft and Living Matter, UNIST, UNIST-gil 50, Eonyang-eup, Ulju-gun, Ulsan, 689-798, Republic of Korea.
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222
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Fujiwara K, Adachi T, Doi N. Artificial Cell Fermentation as a Platform for Highly Efficient Cascade Conversion. ACS Synth Biol 2018; 7:363-370. [PMID: 29258304 DOI: 10.1021/acssynbio.7b00365] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Because of its high specificity and stereoselectivity, cascade reactions using enzymes have been attracting attention as a platform for chemical synthesis. However, the sensitivity of enzymes outside their optimum conditions and their rapid decrease of activity upon dilution are drawbacks of the system. In this study, we developed a system for cascade enzymatic conversion in bacteria-shaped liposomes formed by hypertonic treatment, and demonstrated that the system can overcome the drawbacks of the enzymatic cascade reactions in bulk. This system produced final products at a level equivalent to the maximum concentration of the bulk system (0.10 M, e.g., 4.6 g/L), and worked even under conditions where enzymes normally lose their function. Under diluted conditions, the conversion rate of the artificial cell system was remarkably higher than that in the bulk system. Our results indicate that artificial cells can behave as a platform to perform fermentative production like microorganisms.
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Affiliation(s)
- Kei Fujiwara
- Department of Biosciences
and Informatics, Faculty of Science and Technology, Keio University, Yokohama 223−8522, Japan
| | - Takuma Adachi
- Department of Biosciences
and Informatics, Faculty of Science and Technology, Keio University, Yokohama 223−8522, Japan
| | - Nobuhide Doi
- Department of Biosciences
and Informatics, Faculty of Science and Technology, Keio University, Yokohama 223−8522, Japan
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223
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Bajczyk MD, Dittwald P, Wołos A, Szymkuć S, Grzybowski BA. Discovery and Enumeration of Organic-Chemical and Biomimetic Reaction Cycles within the Network of Chemistry. Angew Chem Int Ed Engl 2018; 57:2367-2371. [DOI: 10.1002/anie.201712052] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Michał D. Bajczyk
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Piotr Dittwald
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Agnieszka Wołos
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Sara Szymkuć
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Bartosz A. Grzybowski
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
- IBS Center for Soft and Living Matter and Department of Chemistry; UNIST; 50, UNIST-gil, Eonyang-eup, Ulju-gun Ulsan South Korea
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224
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Bajczyk MD, Dittwald P, Wołos A, Szymkuć S, Grzybowski BA. Discovery and Enumeration of Organic-Chemical and Biomimetic Reaction Cycles within the Network of Chemistry. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Michał D. Bajczyk
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Piotr Dittwald
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Agnieszka Wołos
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Sara Szymkuć
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
| | - Bartosz A. Grzybowski
- Institute of Organic Chemistry; Polish Academy of Sciences; Ul. Kasprzaka 44/52 Warsaw 01-224 Poland
- IBS Center for Soft and Living Matter and Department of Chemistry; UNIST; 50, UNIST-gil, Eonyang-eup, Ulju-gun Ulsan South Korea
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225
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della Sala F, Maiti S, Bonanni A, Scrimin P, Prins LJ. Fuel-Selective Transient Activation of Nanosystems for Signal Generation. Angew Chem Int Ed Engl 2018; 57:1611-1615. [DOI: 10.1002/anie.201711964] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 12/18/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Flavio della Sala
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Subhabrata Maiti
- Current address: Department of Chemistry; The Pennsylvania State University; University Park PA USA
| | - Andrea Bonanni
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Paolo Scrimin
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Leonard J. Prins
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
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226
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della Sala F, Maiti S, Bonanni A, Scrimin P, Prins LJ. Fuel-Selective Transient Activation of Nanosystems for Signal Generation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711964] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Flavio della Sala
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Subhabrata Maiti
- Current address: Department of Chemistry; The Pennsylvania State University; University Park PA USA
| | - Andrea Bonanni
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Paolo Scrimin
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Leonard J. Prins
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
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227
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Pestana LR, Minnetian N, Lammers LN, Head-Gordon T. Dynamical inversion of the energy landscape promotes non-equilibrium self-assembly of binary mixtures. Chem Sci 2018; 9:1640-1646. [PMID: 29675210 PMCID: PMC5887813 DOI: 10.1039/c7sc03524a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/26/2017] [Indexed: 11/21/2022] Open
Abstract
When driven out of equilibrium, many diverse systems can form complex spatial and dynamical patterns, even in the absence of attractive interactions.
When driven out of equilibrium, many diverse systems can form complex spatial and dynamical patterns, even in the absence of attractive interactions. Using kinetic Monte Carlo simulations, we investigate the phase behavior of a binary system of particles of dissimilar size confined between semiflexible planar surfaces, in which the nanoconfinement introduces a non-local coupling between particles, which we model as an activation energy barrier to diffusion that decreases with the local fraction of the larger particle. The system autonomously reaches a cyclical non-equilibrium state characterized by the formation and dissolution of metastable micelle-like clusters with the small particles in the core and the large ones in the surrounding corona. The power spectrum of the fluctuations in the aggregation number exhibits 1/f noise reminiscent of self-organized critical systems. We suggest that the dynamical metastability of the micellar structures arises from an inversion of the energy landscape, in which the relaxation dynamics of one of the species induces a metastable phase for the other species.
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Affiliation(s)
- Luis Ruiz Pestana
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , University of California , Berkeley , USA .
| | | | - Laura Nielsen Lammers
- Earth and Environmental Science Area , Lawrence Berkeley National Laboratory , University of California , Berkeley , USA.,Department of Environmental Science, Policy, and Management , University of California , Berkeley , USA
| | - Teresa Head-Gordon
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , University of California , Berkeley , USA . .,Department of Chemistry , University of California , Berkeley , USA.,Department of Bioengineering , University of California , Berkeley , USA.,Department of Chemical and Biomolecular Engineering , University of California , Berkeley , USA
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228
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Okesola BO, Mata A. Multicomponent self-assembly as a tool to harness new properties from peptides and proteins in material design. Chem Soc Rev 2018; 47:3721-3736. [DOI: 10.1039/c8cs00121a] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nature is enriched with a wide variety of complex, synergistic and highly functional protein-based multicomponent assemblies.
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Affiliation(s)
- Babatunde O. Okesola
- School of Engineering and Materials Science
- Institute of Bioengineering
- Queen Mary University of London
- UK
| | - Alvaro Mata
- School of Engineering and Materials Science
- Institute of Bioengineering
- Queen Mary University of London
- UK
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229
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Mazur T, Lach S, Grzybowski BA. Heterogeneous Catalysis "On Demand": Mechanically Controlled Catalytic Activity of a Metal Surface. ACS APPLIED MATERIALS & INTERFACES 2017; 9:44264-44269. [PMID: 29178783 DOI: 10.1021/acsami.7b15253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A metal surface passivated with a tightly packed self-assembled monolayer (SAM) can be made catalytically active upon the metal's mechanical deformation. This deformation renders the SAM sparser and exposes additional catalytic sites on the metal's surface. If the deformation is elastic, return of the metal to the original shape "heals" the SAM and nearly extinguishes the catalytic activity. Kelvin probe force microscopy and theoretical considerations both indicate that the catalytic domains "opening up" in the deformed SAM are of nanoscopic dimensions.
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Affiliation(s)
- Tomasz Mazur
- IBS Center for Soft and Living Matter and the Department of Chemistry, Ulsan National Institute of Science and Technology , Ulsan, South Korea
| | - Slawomir Lach
- IBS Center for Soft and Living Matter and the Department of Chemistry, Ulsan National Institute of Science and Technology , Ulsan, South Korea
| | - Bartosz A Grzybowski
- IBS Center for Soft and Living Matter and the Department of Chemistry, Ulsan National Institute of Science and Technology , Ulsan, South Korea
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230
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Zdrali E, Chen Y, Okur HI, Wilkins DM, Roke S. The Molecular Mechanism of Nanodroplet Stability. ACS NANO 2017; 11:12111-12120. [PMID: 29224343 DOI: 10.1021/acsnano.7b05100] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Mixtures of nano- and microscopic oil droplets in water have recently been rediscovered as miniature reaction vessels in microfluidic environments and are important constituents of many environmental systems, food, personal care, and medical products. The oil nanodroplet/water interface stabilized by surfactants determines the physicochemical properties of the droplets. Surfactants are thought to stabilize nanodroplets by forming densely packed monolayers that shield the oil phase from the water. This idea has been inferred from droplet stability measurements in combination with molecular structural data obtained from extended planar interfaces. Here, we present a molecular level investigation of the surface structure and stability of nanodroplets and show that the surface structure of nanodroplets is significantly different from that of extended planar interfaces. Charged surfactants form monolayers that are more than 1 order of magnitude more dilute than geometrically packed ones, and there is no experimental correlation between stability and surfactant surface density. Moreover, dilute negatively charged surfactant monolayers produce more stable nanodroplets than dilute positively charged and dense geometrically packed neutral surfactant monolayers. Droplet stability is found to depend on the relative cooperativity between charge-charge, charge-dipole, and hydrogen-bonding interactions. The difference between extended planar interfaces and nanoscale interfaces stems from a difference in the thermally averaged total charge-charge interactions in the two systems. Low dielectric oil droplets with a size smaller than the Debye length in oil permit repulsive interactions between like charges from opposing interfaces in small droplets. This behavior is generic and extends up to the micrometer length scale.
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Affiliation(s)
- Evangelia Zdrali
- Laboratory for Fundamental BioPhotonics, Institutes of Bioengineering and Materials Science and Engineering, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Yixing Chen
- Laboratory for Fundamental BioPhotonics, Institutes of Bioengineering and Materials Science and Engineering, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Halil I Okur
- Laboratory for Fundamental BioPhotonics, Institutes of Bioengineering and Materials Science and Engineering, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - David M Wilkins
- Laboratory of Computational Science and Modeling, Institute of Materials, École Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
| | - Sylvie Roke
- Laboratory for Fundamental BioPhotonics, Institutes of Bioengineering and Materials Science and Engineering, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
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231
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Cheung S, O'Shea DF. Directed self-assembly of fluorescence responsive nanoparticles and their use for real-time surface and cellular imaging. Nat Commun 2017; 8:1885. [PMID: 29192150 PMCID: PMC5709404 DOI: 10.1038/s41467-017-02060-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 11/03/2017] [Indexed: 12/11/2022] Open
Abstract
Directed self-assemblies in water are known as the most efficient means of forming complex higher ordered structures in nature. Here we show a straightforward and robust method for particle assembly which utilises the amphiphilic tri-block co-polymer poloxamer-188 and a hydrophobic fluorophore as the two designer components, which have a built-in ability to convey spatial and temporal information about their surroundings to an observer. Templating of particle self-assembly is attributed to interactions between the fluorophore and hydrophobic segment of the poloxamer. Particle fluorescence in water is quenched but can be induced to selectively switch on in response to temperature, surface adsorption and cellular uptake. The ability of the particles to dynamically modulate emission intensity can be exploited for selective labelling and real-time imaging of drug crystal surfaces, natural fibres and insulin fibrils, and cellular delivery. As particle solutions are easily prepared, further applications for this water-based NIR-fluorescent paint are anticipated.
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Affiliation(s)
- Shane Cheung
- Department of Pharmaceutical and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin, 2, Ireland
| | - Donal F O'Shea
- Department of Pharmaceutical and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin, 2, Ireland.
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232
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Mason AF, Buddingh' BC, Williams DS, van Hest JCM. Hierarchical Self-Assembly of a Copolymer-Stabilized Coacervate Protocell. J Am Chem Soc 2017; 139:17309-17312. [PMID: 29134798 PMCID: PMC5724030 DOI: 10.1021/jacs.7b10846] [Citation(s) in RCA: 145] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Complex coacervate microdroplets are finding increased utility in synthetic cell applications due to their cytomimetic properties. However, their intrinsic membrane-free nature results in instability that limits their application in protocell research. Herein, we present the development of a new protocell model through the spontaneous interfacial self-assembly of copolymer molecules on biopolymer coacervate microdroplets. This hierarchical protocell model not only incorporates the favorable properties of coacervates (such as spontaneous assembly and macromolecular condensation) but also assimilates the essential features of a semipermeable copolymeric membrane (such as discretization and stabilization). This was accomplished by engineering an asymmetric, biodegradable triblock copolymer molecule comprising hydrophilic, hydrophobic, and polyanionic components capable of direct coacervate membranization via electrostatic surface anchoring and chain self-association. The resulting hierarchical protocell demonstrated striking integrity as a result of membrane formation, successfully stabilizing enzymatic cargo against coalescence and fusion in discrete protocellular populations. The semipermeable nature of the copolymeric membrane enabled the incorporation of a simple enzymatic cascade, demonstrating chemical communication between discrete populations of neighboring protocells. In this way, we pave the way for the development of new synthetic cell constructs.
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Affiliation(s)
- Alexander F Mason
- Eindhoven University of Technology , P.O. Box 513 (STO 3.31), 5600MB Eindhoven, The Netherlands
| | - Bastiaan C Buddingh'
- Eindhoven University of Technology , P.O. Box 513 (STO 3.31), 5600MB Eindhoven, The Netherlands
| | - David S Williams
- Eindhoven University of Technology , P.O. Box 513 (STO 3.31), 5600MB Eindhoven, The Netherlands.,Department of Chemistry, Swansea University , Swansea SA2 8PP, United Kingdom
| | - Jan C M van Hest
- Eindhoven University of Technology , P.O. Box 513 (STO 3.31), 5600MB Eindhoven, The Netherlands
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233
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Spitzer D, Rodrigues LL, Straßburger D, Mezger M, Besenius P. Programmierbare transiente Thermogele vermittelt durch eine pH- und Redox-regulierte supramolekulare Polymerisation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708857] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Daniel Spitzer
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Leona Lucas Rodrigues
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - David Straßburger
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Markus Mezger
- Institut für Physik; Johannes Gutenberg-Universität Mainz, Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Deutschland
| | - Pol Besenius
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
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234
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Spitzer D, Rodrigues LL, Straßburger D, Mezger M, Besenius P. Tuneable Transient Thermogels Mediated by a pH- and Redox-Regulated Supramolecular Polymerization. Angew Chem Int Ed Engl 2017; 56:15461-15465. [DOI: 10.1002/anie.201708857] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 09/29/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Daniel Spitzer
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Leona Lucas Rodrigues
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - David Straßburger
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Markus Mezger
- Institute of Physics; Johannes Gutenberg-University Mainz, Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Pol Besenius
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
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235
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Cheng X, Pan F, Wang M, Li W, Song Y, Liu G, Yang H, Gao B, Wu H, Jiang Z. Hybrid membranes for pervaporation separations. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.07.009] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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236
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Mammola S, Michalik P, Hebets EA, Isaia M. Record breaking achievements by spiders and the scientists who study them. PeerJ 2017; 5:e3972. [PMID: 29104823 PMCID: PMC5668680 DOI: 10.7717/peerj.3972] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 10/09/2017] [Indexed: 12/16/2022] Open
Abstract
Organismal biology has been steadily losing fashion in both formal education and scientific research. Simultaneous with this is an observable decrease in the connection between humans, their environment, and the organisms with which they share the planet. Nonetheless, we propose that organismal biology can facilitate scientific observation, discovery, research, and engagement, especially when the organisms of focus are ubiquitous and charismatic animals such as spiders. Despite being often feared, spiders are mysterious and intriguing, offering a useful foundation for the effective teaching and learning of scientific concepts and processes. In order to provide an entryway for teachers and students-as well as scientists themselves-into the biology of spiders, we compiled a list of 99 record breaking achievements by spiders (the "Spider World Records"). We chose a world-record style format, as this is known to be an effective way to intrigue readers of all ages. We highlighted, for example, the largest and smallest spiders, the largest prey eaten, the fastest runners, the highest fliers, the species with the longest sperm, the most venomous species, and many more. We hope that our compilation will inspire science educators to embrace the biology of spiders as a resource that engages students in science learning. By making these achievements accessible to non-arachnologists and arachnologists alike, we suggest that they could be used: (i) by educators to draw in students for science education, (ii) to highlight gaps in current organismal knowledge, and (iii) to suggest novel avenues for future research efforts. Our contribution is not meant to be comprehensive, but aims to raise public awareness on spiders, while also providing an initial database of their record breaking achievements.
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Affiliation(s)
- Stefano Mammola
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
- IUCN SSC Spider and Scorpion Specialist Group, Torino, Italy
| | - Peter Michalik
- Zoologisches Institut und Museum, Ernst-Moritz-Arndt Universität Greifswald, Greifswald, Germany
| | - Eileen A. Hebets
- School of Biological Sciences, University of Nebraska–Lincoln, Lincoln, NE, USA
| | - Marco Isaia
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
- IUCN SSC Spider and Scorpion Specialist Group, Torino, Italy
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237
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Pogodaev AA, Wong ASY, Huck WTS. Photochemical Control over Oscillations in Chemical Reaction Networks. J Am Chem Soc 2017; 139:15296-15299. [PMID: 29040807 PMCID: PMC5668888 DOI: 10.1021/jacs.7b08109] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Systems chemistry
aims to emulate the functional behavior observed
in living systems by constructing chemical reaction networks (CRNs)
with well-defined dynamic properties. Future expansion of the complexity
of these systems would require external control to tune behavior and
temporal organization of such CRNs. In this work, we design and implement
a photolabile probe, which upon irradiation strengthens the negative
feedback loop of a CRN that produces oscillations of trypsin under
out-of-equilibrium conditions. By changing the timing and duration
of irradiation, we can tailor the temporal response of the network.
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Affiliation(s)
- Aleksandr A Pogodaev
- Institute for Molecules and Materials, Radboud University, Nijmegen , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Albert S Y Wong
- Institute for Molecules and Materials, Radboud University, Nijmegen , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Wilhelm T S Huck
- Institute for Molecules and Materials, Radboud University, Nijmegen , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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238
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Dhiman S, Jain A, Kumar M, George SJ. Adenosine-Phosphate-Fueled, Temporally Programmed Supramolecular Polymers with Multiple Transient States. J Am Chem Soc 2017; 139:16568-16575. [DOI: 10.1021/jacs.7b07469] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shikha Dhiman
- Supramolecular Chemistry
Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India 560064
| | - Ankit Jain
- Supramolecular Chemistry
Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India 560064
| | - Mohit Kumar
- Supramolecular Chemistry
Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India 560064
| | - Subi J. George
- Supramolecular Chemistry
Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India 560064
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239
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A nanobiosensor composed of Exfoliated Graphene Oxide and Gold Nano-Urchins, for detection of GMO products. Biosens Bioelectron 2017; 95:72-80. [DOI: 10.1016/j.bios.2017.02.054] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/25/2017] [Accepted: 02/28/2017] [Indexed: 01/14/2023]
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240
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Affiliation(s)
- Yasunori Okamoto
- Department of Chemistry; University of Basel; Spitalstrasse 51 4056 Basel Switzerland
| | - Thomas R. Ward
- Department of Chemistry; University of Basel; Spitalstrasse 51 4056 Basel Switzerland
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241
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Okamoto Y, Ward TR. Cross-Regulation of an Artificial Metalloenzyme. Angew Chem Int Ed Engl 2017; 56:10156-10160. [PMID: 28485105 PMCID: PMC5575532 DOI: 10.1002/anie.201702181] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/26/2017] [Indexed: 11/18/2022]
Abstract
Cross-regulation of complex biochemical reaction networks is an essential feature of living systems. In a biomimetic spirit, we report on our efforts to program the temporal activation of an artificial metalloenzyme via cross-regulation by a natural enzyme. In the presence of urea, urease slowly releases ammonia that reversibly inhibits an artificial transfer hydrogenase. Addition of an acid, which acts as fuel, allows to maintain the system out of equilibrium.
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Affiliation(s)
- Yasunori Okamoto
- Department of ChemistryUniversity of BaselSpitalstrasse 514056BaselSwitzerland
| | - Thomas R. Ward
- Department of ChemistryUniversity of BaselSpitalstrasse 514056BaselSwitzerland
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242
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Lubbe AS, van Leeuwen T, Wezenberg SJ, Feringa BL. Designing dynamic functional molecular systems. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.049] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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243
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244
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Wong ASY, Huck WTS. Grip on complexity in chemical reaction networks. Beilstein J Org Chem 2017; 13:1486-1497. [PMID: 28845192 PMCID: PMC5550812 DOI: 10.3762/bjoc.13.147] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 07/11/2017] [Indexed: 01/06/2023] Open
Abstract
A new discipline of "systems chemistry" is emerging, which aims to capture the complexity observed in natural systems within a synthetic chemical framework. Living systems rely on complex networks of chemical reactions to control the concentration of molecules in space and time. Despite the enormous complexity in biological networks, it is possible to identify network motifs that lead to functional outputs such as bistability or oscillations. To truly understand how living systems function, we need a complete understanding of how chemical reaction networks (CRNs) create function. We propose the development of a bottom-up approach to design and construct CRNs where we can follow the influence of single chemical entities on the properties of the network as a whole. Ultimately, this approach should allow us to not only understand such complex networks but also to guide and control their behavior.
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Affiliation(s)
- Albert S Y Wong
- Institute for Molecular Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Wilhelm T S Huck
- Institute for Molecular Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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245
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Sytnyk M, Jakešová M, Litviňuková M, Mashkov O, Kriegner D, Stangl J, Nebesářová J, Fecher FW, Schöfberger W, Sariciftci NS, Schindl R, Heiss W, Głowacki ED. Cellular interfaces with hydrogen-bonded organic semiconductor hierarchical nanocrystals. Nat Commun 2017; 8:91. [PMID: 28733618 PMCID: PMC5522432 DOI: 10.1038/s41467-017-00135-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 06/05/2017] [Indexed: 12/11/2022] Open
Abstract
Successful formation of electronic interfaces between living cells and semiconductors hinges on being able to obtain an extremely close and high surface-area contact, which preserves both cell viability and semiconductor performance. To accomplish this, we introduce organic semiconductor assemblies consisting of a hierarchical arrangement of nanocrystals. These are synthesised via a colloidal chemical route that transforms the nontoxic commercial pigment quinacridone into various biomimetic three-dimensional arrangements of nanocrystals. Through a tuning of parameters such as precursor concentration, ligands and additives, we obtain complex size and shape control at room temperature. We elaborate hedgehog-shaped crystals comprising nanoscale needles or daggers that form intimate interfaces with the cell membrane, minimising the cleft with single cells without apparent detriment to viability. Excitation of such interfaces with light leads to effective cellular photostimulation. We find reversible light-induced conductance changes in ion-selective or temperature-gated channels.Nanomaterials that form a bioelectronic interface with cells are fascinating tools for controlling cellular behavior. Here, the authors photostimulate single cells with spiky assemblies of semiconducting quinacridone nanocrystals, whose nanoscale needles maximize electronic contact with the cells.
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Affiliation(s)
- Mykhailo Sytnyk
- Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen,, Germany
- Energie Campus Nürnberg (EnCN), Fürtherstraße 250, 90429, Nürnberg,, Germany
| | - Marie Jakešová
- Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Altenbergerstraße 69, 4040, Linz,, Austria
- Institute for Biophysics, Johannes Kepler University, Gruberstraße 40, 4020, Linz,, Austria
- Laboratory of Organic Electronics, ITN Campus Norrköping, Linköpings Universitet, Bredgatan 33, 60221, Norrköping,, Sweden
| | - Monika Litviňuková
- Institute for Biophysics, Johannes Kepler University, Gruberstraße 40, 4020, Linz,, Austria
| | - Oleksandr Mashkov
- Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen,, Germany
- Energie Campus Nürnberg (EnCN), Fürtherstraße 250, 90429, Nürnberg,, Germany
| | - Dominik Kriegner
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, Prague, 121162, Czech Republic
| | - Julian Stangl
- Institute of Semiconductor and Solid State Physics, University Linz, Altenbergerstraße 69, Linz, 4040, Austria
| | - Jana Nebesářová
- Biology Centre of the Czech Academy of Sciences-Institute of Parasitology, Branišovská 31, České Budějovice, 37005, Czech Republic
| | - Frank W Fecher
- Bayerisches Zentrum für Angewandte Energieforschung (ZAE Bayern), Immerwahrstr. 2, 91058, Erlangen,, Germany
| | - Wolfgang Schöfberger
- Institute of Organic Chemistry, Johannes Kepler University, Altenbergerstraße 69, 4040, Linz,, Austria
| | - Niyazi Serdar Sariciftci
- Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Altenbergerstraße 69, 4040, Linz,, Austria
| | - Rainer Schindl
- Institute for Biophysics, Johannes Kepler University, Gruberstraße 40, 4020, Linz,, Austria.
- Institute for Biophysics, Medical University of Graz, Harrachgasse 21/IV, 8010, Graz, Austria.
| | - Wolfgang Heiss
- Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen,, Germany.
- Energie Campus Nürnberg (EnCN), Fürtherstraße 250, 90429, Nürnberg,, Germany.
| | - Eric Daniel Głowacki
- Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Altenbergerstraße 69, 4040, Linz,, Austria.
- Laboratory of Organic Electronics, ITN Campus Norrköping, Linköpings Universitet, Bredgatan 33, 60221, Norrköping,, Sweden.
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246
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Macias-Romero C, Nahalka I, Okur HI, Roke S. Optical imaging of surface chemistry and dynamics in confinement. Science 2017; 357:784-788. [PMID: 28729352 DOI: 10.1126/science.aal4346] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 04/05/2017] [Accepted: 06/30/2017] [Indexed: 12/23/2022]
Abstract
We imaged the interfacial structure and dynamics of water in a microscopically confined geometry, in three dimensions and on millisecond time scales, with a structurally illuminated wide-field second harmonic microscope. The second harmonic images reported on the orientational order of interfacial water, induced by charge-dipole interactions between water molecules and surface charges. The images were converted into surface potential maps. Spatially resolved surface acid dissociation constant (pKa,s) values were determined for the silica deprotonation reaction by following pH-induced chemical changes on the curved and confined surfaces of a glass microcapillary immersed in aqueous solutions. These values ranged from 2.3 to 10.7 along the wall of a single capillary because of surface heterogeneities. Water molecules that rotate along an oscillating external electric field were also imaged.
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Affiliation(s)
- Carlos Macias-Romero
- Laboratory for Fundamental BioPhotonics, Institute of Bioengineering, and Institute of Materials Science, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Igor Nahalka
- Laboratory for Fundamental BioPhotonics, Institute of Bioengineering, and Institute of Materials Science, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Halil I Okur
- Laboratory for Fundamental BioPhotonics, Institute of Bioengineering, and Institute of Materials Science, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Sylvie Roke
- Laboratory for Fundamental BioPhotonics, Institute of Bioengineering, and Institute of Materials Science, School of Engineering, and Lausanne Centre for Ultrafast Science, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
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247
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Maltanava HM, Poznyak SK, Andreeva DV, Quevedo MC, Bastos AC, Tedim J, Ferreira MGS, Skorb EV. Light-Induced Proton Pumping with a Semiconductor: Vision for Photoproton Lateral Separation and Robust Manipulation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:24282-24289. [PMID: 28654237 DOI: 10.1021/acsami.7b05209] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Energy-transfer reactions are the key for living open systems, biological chemical networking, and the development of life-inspired nanoscale machineries. It is a challenge to find simple reliable synthetic chemical networks providing a localization of the time-dependent flux of matter. In this paper, we look to photocatalytic reaction on TiO2 from different angles, focusing on proton generation and introducing a reliable, minimal-reagent-consuming, stable inorganic light-promoted proton pump. Localized illumination was applied to a TiO2 surface in solution for reversible spatially controlled "inorganic photoproton" isometric cycling, the lateral separation of water-splitting reactions. The proton flux is pumped during the irradiation of the surface of TiO2 and dynamically maintained at the irradiated surface area in the absence of any membrane or predetermined material structure. Moreover, we spatially predetermine a transient acidic pH value on the TiO2 surface in the irradiated area with the feedback-driven generation of a base as deactivator. Importantly we describe how to effectively monitor the spatial localization of the process by the in situ scanning ion-selective electrode technique (SIET) measurements for pH and the scanning vibrating electrode technique (SVET) for local photoelectrochemical studies without additional pH-sensitive dye markers. This work shows the great potential for time- and space-resolved water-splitting reactions for following the investigation of pH-stimulated processes in open systems with their flexible localization on a surface.
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Affiliation(s)
- Hanna M Maltanava
- The Research Institute for Physical Chemical Problems, Belarusian State University , Minsk 220030, Belarus
| | - Sergey K Poznyak
- The Research Institute for Physical Chemical Problems, Belarusian State University , Minsk 220030, Belarus
| | - Daria V Andreeva
- Center for Soft and Living Matter, Institute of Basic Science Ulsan, National Institute of Science and Technology , Ulsan 44919, Republic of Korea
| | - Marcela C Quevedo
- Department of Materials and Ceramic Engineering, CICECO, University of Aveiro , Aveiro 3810-193, Portugal
| | - Alexandre C Bastos
- Department of Materials and Ceramic Engineering, CICECO, University of Aveiro , Aveiro 3810-193, Portugal
| | - João Tedim
- Department of Materials and Ceramic Engineering, CICECO, University of Aveiro , Aveiro 3810-193, Portugal
| | - Mário G S Ferreira
- Department of Materials and Ceramic Engineering, CICECO, University of Aveiro , Aveiro 3810-193, Portugal
| | - Ekaterina V Skorb
- Laboratory of Solution Chemistry of Advanced Materials and Technologies (SCAMT), ITMO University , St. Petersburg 197101, Russian Federation
- Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge 02138, Massachusetts, United States
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248
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Chen JLY, Maiti S, Fortunati I, Ferrante C, Prins LJ. Temporal Control over Transient Chemical Systems using Structurally Diverse Chemical Fuels. Chemistry 2017; 23:11549-11559. [DOI: 10.1002/chem.201701533] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Jack L.-Y. Chen
- School of Science; Auckland University of Technology; 34 St Paul St Auckland 1010 New Zealand
| | - Subhabrata Maiti
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Ilaria Fortunati
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Camilla Ferrante
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Leonard J. Prins
- Department of Chemical Sciences; University of Padova; Via Marzolo 1 35131 Padova Italy
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249
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Hakim AS, Omara ST, Syame SM, Fouad EA. Serotyping, antibiotic susceptibility, and virulence genes screening of Escherichia coli isolates obtained from diarrheic buffalo calves in Egyptian farms. Vet World 2017; 10:769-773. [PMID: 28831220 PMCID: PMC5553145 DOI: 10.14202/vetworld.2017.769-773] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/23/2017] [Indexed: 01/01/2023] Open
Abstract
AIM In Egypt as in many other countries, river water buffalo (Bubalus bubalis) is considered an important source of high-quality milk and meat supply. The objective of this study was to investigate serotypes, virulence genes, and antibiotic resistance determinants profiles of Escherichia coli isolated from buffalo at some places in Egypt; noticibly, this issue was not discussed in the country yet. MATERIALS AND METHODS A number of 58 rectal samples were collected from diarrheic buffalo calves in different regions in Egypt, and bacteriological investigated for E. coli existence. The E. coli isolates were biochemically, serologicaly identified, tested for antibiotic susceptibility, and polymerase chain reaction (PCR) analyzed for the presence of antibiotic resistance determinants and virulence genes. RESULTS Overall 14 isolates typed as E. coli (24.1%); 6 were belonged to serogroup O78 (10.3%), followed by O125 (4 isolates, 6.9%), then O158 (3 isolates, 5.2%) and one isolate O8 (1.7%), among them, there were 5 E. coli isolates showed a picture of hemolysis (35.7%). The isolates exhibited a high resistance to β lactams over 60%, followed by sulfa (50%) and aminoglucoside (42.8%) group, in the same time the isolates were sensitive to quinolone, trimethoprim-sulfamethoxazole, tetracycline (100%), and cephalosporine groups (71.4%). A multiplex PCR was applied to the 14 E. coli isolates revealed that all were carrying at least one gene, as 10 carried blaTEM (71.4%), 8 Sul1 (57.1%), and 6 aadB (42.8%), and 9 isolates could be considered multidrug resistant (MDR) by an incidence of 64.3%. A PCR survey was stratified for the most important E. coli virulence genes, and showed the presence of Shiga toxins in 9 isolates carried either one or the two Stx genes (64.3%), 5 isolates carried hylA gene (35.7%), and eae in 2 isolates only (14.3%), all isolates carried at least one virulence gene except two (85.7%). CONCLUSION The obtained data displayed that in Egypt, buffalo as well as other ruminants could be a potential source of MDR pathogenic E. coli variants which have a public health importance.
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Affiliation(s)
- Ashraf S Hakim
- Department of Microbiology and Immunology, National Research Centre, Dokki, Cairo, Egypt
| | - Shimaa T Omara
- Department of Microbiology and Immunology, National Research Centre, Dokki, Cairo, Egypt
| | - Sohier M Syame
- Department of Microbiology and Immunology, National Research Centre, Dokki, Cairo, Egypt
| | - Ehab A Fouad
- Department of Microbiology and Immunology, National Research Centre, Dokki, Cairo, Egypt
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Foy JT, Li Q, Goujon A, Colard-Itté JR, Fuks G, Moulin E, Schiffmann O, Dattler D, Funeriu DP, Giuseppone N. Dual-light control of nanomachines that integrate motor and modulator subunits. NATURE NANOTECHNOLOGY 2017; 12:540-545. [PMID: 28319615 DOI: 10.1038/nnano.2017.28] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 02/02/2017] [Indexed: 05/20/2023]
Abstract
A current challenge in the field of artificial molecular machines is the synthesis and implementation of systems that can produce useful work when fuelled with a constant source of external energy. The first experimental achievements of this kind consisted of machines with continuous unidirectional rotations and translations that make use of 'Brownian ratchets' to bias random motions. An intrinsic limitation of such designs is that an inversion of directionality requires heavy chemical modifications in the structure of the actuating motor part. Here we show that by connecting subunits made of both unidirectional light-driven rotary motors and modulators, which respectively braid and unbraid polymer chains in crosslinked networks, it becomes possible to reverse their integrated motion at all scales. The photostationary state of the system can be tuned by modulation of frequencies using two irradiation wavelengths. Under this out-of-equilibrium condition, the global work output (measured as the contraction or expansion of the material) is controlled by the net flux of clockwise and anticlockwise rotations between the motors and the modulators.
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Affiliation(s)
- Justin T Foy
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Quan Li
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Antoine Goujon
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Jean-Rémy Colard-Itté
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Gad Fuks
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Emilie Moulin
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Olivier Schiffmann
- Department of Mathematics, UMR CNRS 8628, Bâtiment 425, University Paris-Sud Saclay, 91405 Orsay Cedex, France
| | - Damien Dattler
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Daniel P Funeriu
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Nicolas Giuseppone
- SAMS Research Group, Institut Charles Sadron, University of Strasbourg - CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
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