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Sánchez JM, Sánchez-García L, Pesarrodona M, Serna N, Sánchez-Chardi A, Unzueta U, Mangues R, Vázquez E, Villaverde A. Conformational Conversion during Controlled Oligomerization into Nonamylogenic Protein Nanoparticles. Biomacromolecules 2018; 19:3788-3797. [PMID: 30052033 DOI: 10.1021/acs.biomac.8b00924] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Protein materials are rapidly gaining interest in materials sciences and nanomedicine because of their intrinsic biocompatibility and full biodegradability. The controlled construction of supramolecular entities relies on the controlled oligomerization of individual polypeptides, achievable through different strategies. Because of the potential toxicity of amyloids, those based on alternative molecular organizations are particularly appealing, but the structural bases on nonamylogenic oligomerization remain poorly studied. We have applied spectrofluorimetry and spectropolarimetry to identify the conformational conversion during the oligomerization of His-tagged cationic stretches into regular nanoparticles ranging around 11 nm, useful for tumor-targeted drug delivery. We demonstrate that the novel conformation acquired by the proteins, as building blocks of these supramolecular assemblies, shows different extents of compactness and results in a beta structure enrichment that enhances their structural stability. The conformational profiling presented here offers clear clues for understanding and tailoring the process of nanoparticle formation through the use of cationic and histidine rich stretches in the context of protein materials usable in advanced nanomedical strategies.
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Affiliation(s)
- Julieta M Sánchez
- Institut de Biotecnologia i de Biomedicina , Universitat Autònoma de Barcelona , Bellaterra 08193 Barcelona , Spain.,Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, ICTA and Departamento de Química, Cátedra de Química Biológica, Córdoba, Argentina, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Córdoba, Argentina , Av. Velez Sarsfield 1611 , X5016GCA Córdoba , Argentina
| | - Laura Sánchez-García
- Departament de Genètica i de Microbiologia , Universitat Autònoma de Barcelona , Bellaterra, 08193 Barcelona , Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain
| | - Mireia Pesarrodona
- Institut de Biotecnologia i de Biomedicina , Universitat Autònoma de Barcelona , Bellaterra 08193 Barcelona , Spain.,Departament de Genètica i de Microbiologia , Universitat Autònoma de Barcelona , Bellaterra, 08193 Barcelona , Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain
| | - Naroa Serna
- Institut de Biotecnologia i de Biomedicina , Universitat Autònoma de Barcelona , Bellaterra 08193 Barcelona , Spain.,Departament de Genètica i de Microbiologia , Universitat Autònoma de Barcelona , Bellaterra, 08193 Barcelona , Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain
| | | | - Ugutz Unzueta
- Institut de Biotecnologia i de Biomedicina , Universitat Autònoma de Barcelona , Bellaterra 08193 Barcelona , Spain.,Departament de Genètica i de Microbiologia , Universitat Autònoma de Barcelona , Bellaterra, 08193 Barcelona , Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain.,Biomedical Research Institute Sant Pau (IIB-Sant Pau) and Josep Carreras Research Institute, Hospital de la Santa Creu i Sant Pau , 08025 Barcelona , Spain
| | - Ramón Mangues
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain.,Biomedical Research Institute Sant Pau (IIB-Sant Pau) and Josep Carreras Research Institute, Hospital de la Santa Creu i Sant Pau , 08025 Barcelona , Spain
| | - Esther Vázquez
- Institut de Biotecnologia i de Biomedicina , Universitat Autònoma de Barcelona , Bellaterra 08193 Barcelona , Spain.,Departament de Genètica i de Microbiologia , Universitat Autònoma de Barcelona , Bellaterra, 08193 Barcelona , Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain
| | - Antonio Villaverde
- Institut de Biotecnologia i de Biomedicina , Universitat Autònoma de Barcelona , Bellaterra 08193 Barcelona , Spain.,Departament de Genètica i de Microbiologia , Universitat Autònoma de Barcelona , Bellaterra, 08193 Barcelona , Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) , Bellaterra, 08193 Barcelona , Spain
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3
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Simpson JT, Hunter SR, Aytug T. Superhydrophobic materials and coatings: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2015; 78:086501. [PMID: 26181655 DOI: 10.1088/0034-4885/78/8/086501] [Citation(s) in RCA: 171] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Over the past few years, the scientific community, as well as the world's coatings industry has seen the introduction of oxide/polymer-based superhydrophobic surfaces and coatings with exceptional water repellency. Online videos have caught the public's imagination by showing people walking through mud puddles without getting their tennis shoes wet or muddy, and water literally flying off coated surfaces. This article attempts to explain the basics of this behavior and to discuss and explain the latest superhydrophobic technological breakthroughs. Since superhydrophobic surfaces and coatings can fundamentally change how water interacts with surfaces, and the fact that earth is a water world, it can legitimately be said that this technology has the potential to literally change the world.
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5
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Abstract
Mammalian sperm have evolved under strict selection pressures that have resulted in a highly polarized and efficient design. A critical component of that design is the compartmentalization of specific metabolic pathways to specific regions of the cell. Although the restricted localization of mitochondria to the midpiece is the best known example of this design, the organization of the enzymes of glycolysis along the fibrous sheath is the primary focus of this review. Evolution of variants of these metabolic enzymes has allowed them to function when tethered, enabling localized energy production that is essential for sperm motility. We close by exploring how this design might be mimicked to provide an energy-producing platform technology for applications in nanobiotechnology.
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Affiliation(s)
- C Mukai
- College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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6
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Credi A, Semeraro M, Silvi S, Venturi M. Redox control of molecular motion in switchable artificial nanoscale devices. Antioxid Redox Signal 2011; 14:1119-65. [PMID: 20568952 DOI: 10.1089/ars.2010.3223] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The design, synthesis, and operation of molecular-scale systems that exhibit controllable motions of their component parts is a topic of great interest in nanoscience and a fascinating challenge of nanotechnology. The development of this kind of species constitutes the premise to the construction of molecular machines and motors, which in a not-too-distant future could find applications in fields such as materials science, information technology, energy conversion, diagnostics, and medicine. In the past 25 years the development of supramolecular chemistry has enabled the construction of an interesting variety of artificial molecular machines. These devices operate via electronic and molecular rearrangements and, like the macroscopic counterparts, they need energy to work as well as signals to communicate with the operator. Here we outline the design principles at the basis of redox switching of molecular motion in artificial nanodevices. Redox processes, chemically, electrically, or photochemically induced, can indeed supply the energy to bring about molecular motions. Moreover, in the case of electrically and photochemically induced processes, electrochemical and photochemical techniques can be used to read the state of the system, and thus to control and monitor the operation of the device. Some selected examples are also reported to describe the most representative achievements in this research area.
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Affiliation(s)
- Alberto Credi
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Bologna, Italy.
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Duan L, Qi W, Yan X, He Q, Cui Y, Wang K, Li D, Li J. Proton gradients produced by glucose oxidase microcapsules containing motor F0F1-ATPase for continuous ATP biosynthesis. J Phys Chem B 2009; 113:395-9. [PMID: 19090667 DOI: 10.1021/jp807883e] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Glucose oxidase (GOD) microcapsules held together by cross-linker, glutaraldehyde (GA), are fabricated by the layer-by-layer (LbL) assembly technique. The lipid bilayer containing CF(0)F(1)-ATPase was coated on the outer shell of GOD microcapsules. Driven under the proton gradients produced by catalysis of GOD microcapsules for glucose, ATP is synthesized from ADP and inorganic phosphate catalyzed by the ATPase rotary catalysis. The results show here that ATPase reconstituted on the GOD microcapsules retains its catalytic activity.
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Affiliation(s)
- Li Duan
- Beijing National Laboratory for Molecular Science, International Joint Laboratory, CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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14
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Matsuura N, Rowlands JA. Towards new functional nanostructures for medical imaging. Med Phys 2008; 35:4474-87. [PMID: 18975695 DOI: 10.1118/1.2966595] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Nanostructures represent a promising new type of contrast agent for clinical medical imaging modalities, including magnetic resonance imaging, x-ray computed tomography, ultrasound, and nuclear imaging. Currently, most nanostructures are simple, single-purpose imaging agents based on spherical constructs (e.g., liposomes, micelles, nanoemulsions, macromolecules, dendrimers, and solid nanoparticle structures). In the next decade, new clinical imaging nanostructures will be designed as multi-functional constructs, to both amplify imaging signals at disease sites and deliver localized therapy. Proposals for nanostructures to fulfill these new functions will be outlined. New functional nanostructures are expected to develop in five main directions: Modular nanostructures with additive functionality; cooperative nanostructures with synergistic functionality; nanostructures activated by their in vivo environment; nanostructures activated by sources outside the patient; and novel, nonspherical nanostructures and components. The development and clinical translation of next-generation nanostructures will be facilitated by a combination of improved clarity of the in vivo imaging and biological challenges and the requirements to successfully overcome them; development of standardized characterization and validation systems tailored for the preclinical assessment of nanostructure agents; and development of streamlined commercialization strategies and pipelines tailored for nanostructure-based agents for their efficient translation to the clinic.
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Affiliation(s)
- Naomi Matsuura
- Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada.
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15
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Liu K, Zhai J, Jiang L. Fabrication and characterization of superhydrophobic Sb(2)O(3) films. NANOTECHNOLOGY 2008; 19:165604. [PMID: 21825648 DOI: 10.1088/0957-4484/19/16/165604] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Superhydrophobic Sb(2)O(3) films with micro-nanoscale hierarchical structures have been successfully synthesized for the first time. The resultant materials were characterized in detail by x-ray diffraction, scanning electron microscopy, energy-dispersive x-ray spectroscopy, transmission electron microscopy and water contact angle measurements. The water static contact angle of the obtained Sb(2)O(3) film is about 159° ± 2° and the sliding angle is less than 5°. Reasonable mechanisms for the formation of micro-nanoscale hierarchical structures and for the superhydrophobic properties with a small sliding angle of the obtained Sb(2)O(3) film are also presented in this work.
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Affiliation(s)
- Kesong Liu
- Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
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