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Le Roy H, Song J, Lundberg D, Zhukhovitskiy AV, Johnson JA, McKinley GH, Holten-Andersen N, Lenz M. Valence can control the nonexponential viscoelastic relaxation of multivalent reversible gels. SCIENCE ADVANCES 2024; 10:eadl5056. [PMID: 38748785 PMCID: PMC11095449 DOI: 10.1126/sciadv.adl5056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/10/2024] [Indexed: 05/19/2024]
Abstract
Gels made of telechelic polymers connected by reversible cross-linkers are a versatile design platform for biocompatible viscoelastic materials. Their linear response to a step strain displays a fast, near-exponential relaxation when using low-valence cross-linkers, while larger supramolecular cross-linkers bring about much slower dynamics involving a wide distribution of timescales whose physical origin is still debated. Here, we propose a model where the relaxation of polymer gels in the dilute regime originates from elementary events in which the bonds connecting two neighboring cross-linkers all disconnect. Larger cross-linkers allow for a greater average number of bonds connecting them but also generate more heterogeneity. We characterize the resulting distribution of relaxation timescales analytically and accurately reproduce stress relaxation measurements on metal-coordinated hydrogels with a variety of cross-linker sizes including ions, metal-organic cages, and nanoparticles. Our approach is simple enough to be extended to any cross-linker size and could thus be harnessed for the rational design of complex viscoelastic materials.
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Affiliation(s)
- Hugo Le Roy
- Université Paris-Saclay, CNRS, LPTMS, 91405, Orsay, France
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Jake Song
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
| | - David Lundberg
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Aleksandr V. Zhukhovitskiy
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jeremiah A. Johnson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Gareth H. McKinley
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Niels Holten-Andersen
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Department of Bioengineering and Materials Science and Engineering, Lehigh University, Bethlehem, PA 18015, USA
| | - Martin Lenz
- Université Paris-Saclay, CNRS, LPTMS, 91405, Orsay, France
- PMMH, CNRS, ESPCI Paris, PSL University, Sorbonne Université, Université de Paris, F-75005 Paris, France
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2
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Hu Q, Zhang B, Ren H, Zhou X, He C, Shen Y, Zhou Z, Hu H. Supramolecular metal-organic frameworks as host-guest nanoplatforms for versatile and customizable biomedical applications. Acta Biomater 2023; 168:617-627. [PMID: 37482147 DOI: 10.1016/j.actbio.2023.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 07/14/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
Molecular imaging of disease with multifunctional nanoparticles has improved specificity and sensitivity but also raises the complexity, potential toxicity, and cost. Here, we show a facile and degradable self-assembly β-cyclodextrin metal-organic framework (β-CD-MOF) nanoplatform for customizable multifunctional imaging. These β-CD-MOF nanoparticles were obtained with favorable morphology and size by controlling the degradation time. The β-CD-MOF were used as nanoplatforms for facile functionalization with adamantane (Ad)-modified probes through host-guest interactions between the surface β-CD units and Ad molecules. We demonstrated the method's feasibility and capability by developing various contrast agents for multiple biomedical imaging, including fluorescence imaging, magnetic resonance imaging (MRI), and computed tomography (CT) imaging. The nanoprobes showed superior performance compared to the corresponding small molecular probes, including better physio-chemical properties (e.g., about 5 times of T1 relaxivity for MRI, 1.2 times of Hounsfield units for CT), improved pharmacokinetics, effective tissue imaging capability, and low safety concerns. These β-CD-MOF-based nanoparticles are promising host-guest nanoplatforms for developing multifunctional and safe imaging probes. STATEMENT OF SIGNIFICANCE: Molecular imaging of disease with multifunctional nanoparticles has improved specificity and sensitivity but also raises the complexity, potential toxicity, and cost. Here, we introduce facile and degradable self-assembly β-cyclodextrin metal-organic framework (β-CD-MOF) nanoplatforms for customizable multifunctional imaging. The significance of this work includes: 1) This work reports the tailoring of MOFs nanoparticles with suitable sizes and shapes for biomedical applications through controllable morphological transition and degradation; 2) The β-CD-MOF-based host-guest nanoplatforms are facile and feasible for developing multifunctional nanoparticular contrast agents for effective tissue imaging; 3) The nanoparticular contrast agents show low safety concerns with a long-term tissue deposition similar to the small molecular probes.
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Affiliation(s)
- Qiuhui Hu
- Department of Radiology, Sir Run Shaw Hospital (SRRSH) of School of Medicine, Zhejiang University, Hangzhou 310027, China
| | - Bo Zhang
- Zhejiang Key Laboratory of Smart Biomaterials and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Huiming Ren
- Zhejiang Key Laboratory of Smart Biomaterials and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaoxuan Zhou
- Department of Radiology, Sir Run Shaw Hospital (SRRSH) of School of Medicine, Zhejiang University, Hangzhou 310027, China.
| | - Chengbin He
- Department of Radiology, Sir Run Shaw Hospital (SRRSH) of School of Medicine, Zhejiang University, Hangzhou 310027, China
| | - Youqing Shen
- Zhejiang Key Laboratory of Smart Biomaterials and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhuxian Zhou
- Zhejiang Key Laboratory of Smart Biomaterials and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Hongjie Hu
- Department of Radiology, Sir Run Shaw Hospital (SRRSH) of School of Medicine, Zhejiang University, Hangzhou 310027, China.
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3
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Metze FK, Klok HA. Supramolecular Polymer Brushes. ACS POLYMERS AU 2023. [DOI: 10.1021/acspolymersau.2c00067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Friederike K. Metze
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
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4
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Lallemang M, Yu L, Cai W, Rischka K, Hartwig A, Haag R, Hugel T, Balzer BN. Multivalent non-covalent interactions lead to strongest polymer adhesion. NANOSCALE 2022; 14:3768-3776. [PMID: 35171194 DOI: 10.1039/d1nr08338d] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Multivalent interactions play a leading role in biological processes such as the inhibition of inflammation or virus internalization. The multivalent interactions show enhanced strength and better selectivity compared to monovalent interactions, but they are much less understood due to their complexity. Here, we detect molecular interactions in the range of a few piconewtons to several nanonewtons and correlate them with the formation and subsequent breaking of one or several bonds and assign these bonds. This becomes possible by performing atomic force microcopy (AFM)-based single molecule force spectroscopy of a multifunctional polymer covalently attached to an AFM cantilever tip on a substrate bound polymer layer of the multifunctional polymer. Varying the pH value and the crosslinking state of the polymer layer, we find that bonds of intermediate strength (non-covalent), like coordination bonds, give the highest multivalent bond strength, even outperforming strong (covalent) bonds. At the same time, covalent bonds enhance the polymer layer density, increasing in particular the number of non-covalent bonds. In summary, we can show that the key for the design of stable and durable polymer coatings is to provide a variety of multivalent interactions and to keep the number of non-covalent interactions at a high level.
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Affiliation(s)
- Max Lallemang
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany.
- Cluster of Excellence livMatS @ FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Leixiao Yu
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takusstraße 3, 14195 Berlin, Germany
| | - Wanhao Cai
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany.
| | - Klaus Rischka
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Straße 12, 28359 Bremen, Germany
| | - Andreas Hartwig
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Straße 12, 28359 Bremen, Germany
- University of Bremen, Department 2 Biology/Chemistry, Leobener Straße 3, 28359 Bremen, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takusstraße 3, 14195 Berlin, Germany
| | - Thorsten Hugel
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany.
- Cluster of Excellence livMatS @ FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Bizan N Balzer
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany.
- Cluster of Excellence livMatS @ FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Freiburg Materials Research Center (FMF), Albert Ludwig University of Freiburg, 79104 Freiburg, Germany
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5
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Alhalhooly L, Confeld MI, Woo SO, Mamnoon B, Jacobson R, Ghosh S, Kim J, Mallik S, Choi Y. Single-Molecule Force Probing of RGD-Binding Integrins on Pancreatic Cancer Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:7671-7679. [PMID: 35113515 PMCID: PMC8890904 DOI: 10.1021/acsami.1c23361] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Integrin-targeting arginine-glycine-aspartic acid (RGD)-based nanocarriers have been widely used for tumor imaging, monitoring of tumor development, and delivery of anticancer drugs. However, the thermodynamics of an RGD-integrin formation and dissociation associated with binding dynamics, affinity, and stability remains unclear. Here, we probed the binding strength of the binary complex to live pancreatic cancer cells using single-molecule binding force spectroscopy methods, in which RGD peptides were functionalized on a force probe tip through poly(ethylene glycol) (PEG)-based bifunctional linker molecules. While the density of integrin αV receptors on the cell surface varies more than twofold from cell line to cell line, the individual RGD-integrin complexes exhibited a cell type-independent, monovalent bond strength. The load-dependent bond strength of multivalent RGD-integrin interactions scaled sublinearly with increasing bond number, consistent with the noncooperative, parallel bond model. Furthermore, the multivalent bonds ruptured sequentially either by one or in multiples, and the force strength was comparable to the synchronous rupture force. Comparison of energy landscapes of the bond number revealed a substantial decrease of kinetic off-rates for multivalent bonds, along with the increased width of the potential well and the increased potential barrier height between bound and unbound states, enhancing the stability of the multivalent bonds between them.
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Affiliation(s)
- Lina Alhalhooly
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Matthew I. Confeld
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Sung Oh Woo
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Babak Mamnoon
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Reed Jacobson
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Shrinwanti Ghosh
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Jiha Kim
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota 58108, United State
- Molecular and Cellular Biology Program, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Sanku Mallik
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108, United State
| | - Yongki Choi
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United State
- Molecular and Cellular Biology Program, North Dakota State University, Fargo, North Dakota 58108, United State
- Materials and Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United State
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6
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Xue EY, Shi WJ, Fong WP, Ng DKP. Targeted Delivery and Site-Specific Activation of β-Cyclodextrin-Conjugated Photosensitizers for Photodynamic Therapy through a Supramolecular Bio-orthogonal Approach. J Med Chem 2021; 64:15461-15476. [PMID: 34662121 DOI: 10.1021/acs.jmedchem.1c01505] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Targeted delivery of photosensitizers using hydrophilic and tumor-directing carriers and site-specific activation of their photocytotoxicity are two common strategies to enhance the specificity of anticancer photodynamic therapy. We report herein a novel supramolecular bio-orthogonal approach to integrate these two functions. A β-cyclodextrin-substituted aza-boron-dipyrromethene-based photosensitizer was first complexed with a ferrocene-substituted black-hole quencher to inhibit its photosensitizing ability. Upon encountering the adamantane moieties that had been delivered to target cancer cells through specific binding of the conjugated peptide to the overexpressed epidermal growth factor receptor, the ferrocene-based guest species were displaced due to the stronger binding interactions between β-cyclodextrin and adamantane, thereby restoring the photodynamic activity of the photosensitizer. Hence, this two-step process enabled targeted delivery and site-specific activation of the photosensitizer, as demonstrated through a series of experiments in aqueous media, in a range of cancer cell lines and in tumor-bearing nude mice.
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Affiliation(s)
- Evelyn Y Xue
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Wen-Jing Shi
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Wing-Ping Fong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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7
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Sanchez Perez E, Toor R, Bruyat P, Cepeda C, Degardin M, Dejeu J, Boturyn D, Coche-Guérente L. Impact of Multimeric Ferrocene-containing Cyclodecapeptide Scaffold on Host-Guest Interactions at a β-Cyclodextrin Covered Surface. Chemphyschem 2021; 22:2231-2239. [PMID: 34397150 DOI: 10.1002/cphc.202100469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/05/2021] [Indexed: 11/07/2022]
Abstract
Among non-covalent bonds, the host-guest interaction is an attractive way to attach biomolecules to solid surfaces since the binding strength can be tuned by the nature of host and guest partners or through the valency of the interaction. For that purpose, we synthesized cyclodecapeptide scaffolds exhibiting in a spatially controlled manner two independent domains enabling the multimeric presentation of guest molecules on one face and the other face enabling the potential grafting of a biomolecule of interest. In this work, we were interested in the β-cyclodextrin/ferrocene inclusion complex formed on β-CD monolayers functionalized surfaces. By using surface sensitive techniques such as quartz crystal microbalance and surface plasmon resonance, we quantified the influence of the guest valency on the stability of the inclusion complexes. The results show a drastic enhancement of the affinity with the gradual increase of guest valency. Considering that the sequential binding events are equal and independent, we applied the multivalent model developed by the Huskens group to extract intrinsic binding constants and an effective concentration of host.
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Affiliation(s)
- Enrique Sanchez Perez
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Ritu Toor
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Pierrick Bruyat
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Céline Cepeda
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Mélissa Degardin
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Jérôme Dejeu
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Didier Boturyn
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
| | - Liliane Coche-Guérente
- Department of Molecular Chemistry, Univ. Grenoble-Alpes, CNRS, DCM UMR 5250, CS 40700, 38058, Grenoble Cedex 9, France
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8
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Traeger H, Kiebala DJ, Weder C, Schrettl S. From Molecules to Polymers-Harnessing Inter- and Intramolecular Interactions to Create Mechanochromic Materials. Macromol Rapid Commun 2020; 42:e2000573. [PMID: 33191595 DOI: 10.1002/marc.202000573] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/16/2020] [Indexed: 12/30/2022]
Abstract
The development of mechanophores as building blocks that serve as predefined weak linkages has enabled the creation of mechanoresponsive and mechanochromic polymer materials, which are interesting for a range of applications including the study of biological specimens or advanced security features. In typical mechanophores, covalent bonds are broken when polymers that contain these chemical motifs are exposed to mechanical forces, and changes of the optical properties upon bond scission can be harnessed as a signal that enables the detection of applied mechanical stresses and strains. Similar chromic effects upon mechanical deformation of polymers can also be achieved without relying on the scission of covalent bonds. The dissociation of motifs that feature directional noncovalent interactions, the disruption of aggregated molecules, and conformational changes in molecules or polymers constitute an attractive element for the design of mechanoresponsive and mechanochromic materials. In this article, it is reviewed how such alterations of molecules and polymers can be exploited for the development of mechanochromic materials that signal deformation without breaking covalent bonds. Recent illustrative examples are highlighted that showcase how the use of such mechanoresponsive motifs enables the visual mapping of stresses and damage in a reversible and highly sensitive manner.
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Affiliation(s)
- Hanna Traeger
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
| | - Derek J Kiebala
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
| | - Christoph Weder
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
| | - Stephen Schrettl
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
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9
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Curk T, Tito NB. First-order 'hyper-selective' binding transition of multivalent particles under force. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:214002. [PMID: 31952055 DOI: 10.1088/1361-648x/ab6d12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Multivalent particles bind to targets via many independent ligand-receptor bonding interactions. This microscopic design spans length scales in both synthetic and biological systems. Classic examples include interactions between cells, virus binding, synthetic ligand-coated micrometer-scale vesicles or smaller nano-particles, functionalised polymers, and toxins. Equilibrium multivalent binding is a continuous yet super-selective transition with respect to the number of ligands and receptors involved in the interaction. Increasing the ligand or receptor density on the two particles leads to sharp growth in the number of bound particles at equilibrium. Here we present a theory and Monte Carlo simulations to show that applying mechanical force to multivalent particles causes their adsorption/desorption isotherm on a surface to become sharper and more selective, with respect to variation in the number of ligands and receptors on the two objects. When the force is only applied to particles bound to the surface by one or more ligands, then the transition can become infinitely sharp and first-order-a new binding regime which we term 'hyper-selective'. Force may be imposed by, e.g. flow of solvent around the particles, a magnetic field, chemical gradients, or triggered uncoiling of inert oligomers/polymers tethered to the particles to provide a steric repulsion to the surface. This physical principle is a step towards 'all or nothing' binding selectivity in the design of multivalent constructs.
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Affiliation(s)
- Tine Curk
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, United States of America
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10
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Valderrey V, Wiemann M, Jonkheijm P, Hecht S, Huskens J. Multivalency in Heteroternary Complexes on Cucurbit[8]uril-Functionalized Surfaces: Self-assembly, Patterning, and Exchange Processes. Chempluschem 2020; 84:1324-1330. [PMID: 31944037 DOI: 10.1002/cplu.201900181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/21/2019] [Indexed: 01/01/2023]
Abstract
The spatial confinement of multivalent azopyridine guest molecules mediated by cucurbit[8]urils is described. Fluorescent dye-labelled multivalent azopyridine molecules were attached to preformed methyl viologen/cucurbit[8]uril inclusion complexes in solution and at surfaces. The formation of the resulting heteroternary host-guest complexes was verified in solution and on gold substrates. Surface binding constants of the multivalent ligands were two orders of magnitude higher than that of the monovalent one. Poly-l-lysine grafted with oligo(ethylene glycol) and maleimide moieties was deposited on cyclic olefin polymer surfaces and further modified with thiolated methyl viologen and cucurbit[8]uril. Defined micrometer-sized patterns were created by soft lithographic techniques. Supramolecular exchange experiments were performed on these surface-bound heterocomplexes, which allowed the creation of cross-patterns by taking advantage of the molecular valency, which led to the substitution of the monovalent guest by the multivalent guests but not vice versa.
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Affiliation(s)
- Virginia Valderrey
- Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Maike Wiemann
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology, Department of Science and Technology, University of Twente, P.O. Box 217, 7500, AE Enschede, The Netherlands
| | - Pascal Jonkheijm
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology, Department of Science and Technology, University of Twente, P.O. Box 217, 7500, AE Enschede, The Netherlands
| | - Stefan Hecht
- Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Jurriaan Huskens
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology, Department of Science and Technology, University of Twente, P.O. Box 217, 7500, AE Enschede, The Netherlands
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11
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Di Iorio D, Huskens J. Surface Modification with Control over Ligand Density for the Study of Multivalent Biological Systems. ChemistryOpen 2020; 9:53-66. [PMID: 31921546 PMCID: PMC6948118 DOI: 10.1002/open.201900290] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/11/2019] [Indexed: 12/30/2022] Open
Abstract
In the study of multivalent interactions at interfaces, as occur for example at cell membranes, the density of the ligands or receptors displayed at the interface plays a pivotal role, affecting both the overall binding affinities and the valencies involved in the interactions. In order to control the ligand density at the interface, several approaches have been developed, and they concern the functionalization of a wide range of materials. Here, different methods employed in the modification of surfaces with controlled densities of ligands are being reviewed. Examples of such methods encompass the formation of self-assembled monolayers (SAMs), supported lipid bilayers (SLBs) and polymeric layers on surfaces. Particular emphasis is given to the methods employed in the study of different types of multivalent biological interactions occurring at the functionalized surfaces and their working principles.
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Affiliation(s)
- Daniele Di Iorio
- Molecular NanoFabrication group MESA+ Institute for NanotechnologyUniversity of TwenteEnschedeThe Netherlands
| | - Jurriaan Huskens
- Molecular NanoFabrication group MESA+ Institute for NanotechnologyUniversity of TwenteEnschedeThe Netherlands
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12
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Blass J, Bozna B, Albrecht M, Wenz G, Bennewitz R. Molecular kinetics and cooperative effects in friction and adhesion of fast reversible bonds. Phys Chem Chem Phys 2019; 21:17170-17175. [PMID: 31342030 DOI: 10.1039/c9cp03350e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular mechanisms of adhesion and friction include the rupture of single and multiple bonds. The strength of adhesion and friction thus depends on the molecular kinetics and cooperative effects in the lifetime of bonds under stress. We measured the rate dependence of friction and adhesion mediated by supramolecular guest-host bonds using atomic force microscopy (AFM). The tip of the AFM and the surface were functionalized with cyclodextrin hosts. The influence of molecular kinetics on adhesion and friction was studied using three different ditopic guest molecules that connected the AFM tip and the surface. Adamantane, ferrocene, and azobenzene were the guest end groups of the connector molecules that formed inclusion complexes with the cyclodextrin hosts. The results confirm the importance of the molecular off-rate and of cooperative effects for the strength of adhesion and friction. Positive cooperativity also shapes the dependence of friction on the concentration of connector molecules, which follows the Hill-Langmuir model. Based on the Hill coefficient of 3.6, reflecting a characteristic rupture of at least 3-4 parallel bonds, a rescaling of the pulling rate is suggested that shifts the rate dependence of adhesion and friction for the three different molecules towards one master curve.
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Affiliation(s)
- Johanna Blass
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
| | - Bianca Bozna
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
| | - Marcel Albrecht
- Organic Macromolecular Chemistry, Saarland University, Campus C 4.2, 66123 Saarbrücken, Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry, Saarland University, Campus C 4.2, 66123 Saarbrücken, Germany
| | - Roland Bennewitz
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
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13
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Sasmal R, Das Saha N, Pahwa M, Rao S, Joshi D, Inamdar MS, Sheeba V, Agasti SS. Synthetic Host-Guest Assembly in Cells and Tissues: Fast, Stable, and Selective Bioorthogonal Imaging via Molecular Recognition. Anal Chem 2018; 90:11305-11314. [PMID: 30148612 PMCID: PMC6569623 DOI: 10.1021/acs.analchem.8b01851] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
Bioorthogonal
strategies are continuing to pave the way for new analytical tools
in biology. Although a significant amount of progress has been made
in developing covalent reaction based bioorthogonal strategies, balanced
reactivity, and stability are often difficult to achieve from these
systems. Alternatively, despite being kinetically beneficial, the
development of noncovalent approaches that utilize fully synthetic
and stable components remains challenging due to the lack of selectivity
in conventional noncovalent interactions in the living cellular environment.
Herein, we introduce a bioorthogonal assembly strategy based on a
synthetic host–guest system featuring Cucurbit[7]uril (CB[7])
and adamantylamine (ADA). We demonstrate that highly selective and
ultrastable host–guest interaction between CB[7] and ADA provides
a noncovalent mechanism for assembling labeling agents, such as fluorophores
and DNA, in cells and tissues for bioorthogonal imaging of molecular
targets. Additionally, by combining with covalent reaction, we show
that this CB[7]–ADA based noncovalent interaction enables simultaneous
bioorthogonal labeling and multiplexed imaging in cells as well as
tissue sections. Finally, we show that interaction between CB[7] and
ADA fulfills the demands of specificity and stability that is required
for assembling molecules in the complexities of a living cell. We
demonstrate this by sensitive detection of metastatic cancer-associated
cell surface protein marker as well as by showing the distribution
and dynamics of F-actin in living cells.
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Affiliation(s)
- Ranjan Sasmal
- New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Nilanjana Das Saha
- New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India.,Chemistry & Physics of Materials Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Meenakshi Pahwa
- Chemistry & Physics of Materials Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Sushma Rao
- Neuroscience Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Divyesh Joshi
- Molecular Biology and Genetics Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Maneesha S Inamdar
- Molecular Biology and Genetics Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Vasu Sheeba
- Neuroscience Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
| | - Sarit S Agasti
- New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India.,Chemistry & Physics of Materials Unit , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India.,School of Advanced Materials" (SAMat) , Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) , Bangalore , Karnataka 560064 , India
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14
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Koçer G, Jonkheijm P. About Chemical Strategies to Fabricate Cell-Instructive Biointerfaces with Static and Dynamic Complexity. Adv Healthc Mater 2018; 7:e1701192. [PMID: 29717821 DOI: 10.1002/adhm.201701192] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 02/12/2018] [Indexed: 12/21/2022]
Abstract
Properly functioning cell-instructive biointerfaces are critical for healthy integration of biomedical devices in the body and serve as decisive tools for the advancement of our understanding of fundamental cell biological phenomena. Studies are reviewed that use covalent chemistries to fabricate cell-instructive biointerfaces. These types of biointerfaces typically result in a static presentation of predefined cell-instructive cues. Chemically defined, but dynamic cell-instructive biointerfaces introduce spatiotemporal control over cell-instructive cues and present another type of biointerface, which promises a more biomimetic way to guide cell behavior. Therefore, strategies that offer control over the lateral sorting of ligands, the availability and molecular structure of bioactive ligands, and strategies that offer the ability to induce physical, chemical and mechanical changes in situ are reviewed. Specific attention is paid to state-of-the-art studies on dynamic, cell-instructive 3D materials. Future work is expected to further deepen our understanding of molecular and cellular biological processes investigating cell-type specific responses and the translational steps toward targeted in vivo applications.
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Affiliation(s)
- Gülistan Koçer
- TechMed Centre and MESA Institute for Nanotechnology; University of Twente; 7500 AE Enschede The Netherlands
- Institute of Biomaterials and Biomedical Engineering; University of Toronto; Toronto M5S 3G9 Ontario Canada
| | - Pascal Jonkheijm
- TechMed Centre and MESA Institute for Nanotechnology; University of Twente; 7500 AE Enschede The Netherlands
- Institute of Biomaterials and Biomedical Engineering; University of Toronto; Toronto M5S 3G9 Ontario Canada
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15
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Li B, Wang X, Li Y, Paananen A, Szilvay GR, Qin M, Wang W, Cao Y. Single-Molecule Force Spectroscopy Reveals Self-Assembly Enhanced Surface Binding of Hydrophobins. Chemistry 2018; 24:9224-9228. [PMID: 29687928 DOI: 10.1002/chem.201801730] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Indexed: 01/26/2023]
Abstract
Hydrophobins have raised lots of interest as powerful surface adhesives. However, it remains largely unexplored how their strong and versatile surface adhesion is linked to their unique amphiphilic structural features. Here, we develop an AFM-based single-molecule force spectroscopy assay to quantitatively measure the binding strength of hydrophobin to various types of surfaces both in isolation and in preformed protein films. We find that individual class II hydrophobins (HFBI) bind strongly to hydrophobic surfaces but weakly to hydrophilic ones. After self-assembly into protein films, they show much stronger binding strength to both surfaces due to the cooperativity of different interactions at nanoscale. Such self-assembly enhanced surface binding may serve as a general design principle for synthetic bioactive adhesives.
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Affiliation(s)
- Bing Li
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
| | - Xin Wang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
| | - Ying Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, 210044, P. R. China
| | - Arja Paananen
- Industrial Biotechnology, VTT Technical Research Centre of Finland Ltd, 02044 VTT, Espoo, Finland
| | - Géza R Szilvay
- Industrial Biotechnology, VTT Technical Research Centre of Finland Ltd, 02044 VTT, Espoo, Finland
| | - Meng Qin
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
| | - Wei Wang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
| | - Yi Cao
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
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16
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Huang T, Luan X, Xia Q, Pan S, An Q, Wu Y, Zhang Y. Molecularly Selective Regulation of Delivery Fluxes by Employing Supramolecular Interactions in Layer-by-Layer Films. Chem Asian J 2018; 13:1067-1073. [DOI: 10.1002/asia.201800276] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Tao Huang
- Beijing Key Laboratory of Materials Utilization of, Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 P.R. China
| | - Xinglong Luan
- Beijing Key Laboratory of Materials Utilization of, Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 P.R. China
- BOE Technology Group Co. Ltd.; No.9 Dize Road, BDA Beijing P.R. China
| | - Qi Xia
- Beijing Key Laboratory of Materials Utilization of, Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 P.R. China
| | - Shaofeng Pan
- Beijing Key Laboratory of Materials Utilization of, Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 P.R. China
| | - Qi An
- Beijing Key Laboratory of Materials Utilization of, Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 P.R. China
| | - Yaling Wu
- School of Chemistry and Molecular Engineering; Peking University; Beijing 100083 P.R. China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of, Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 P.R. China
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17
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Wiemann M, Jonkheijm P. Stimuli-Responsive Cucurbit[n]uril-Mediated Host-Guest Complexes on Surfaces. Isr J Chem 2017. [DOI: 10.1002/ijch.201700109] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Maike Wiemann
- Bioinspired Molecular Engineering Laboratory of the MIRA Institute of Biomedical Technology and Technical Medicine and the Molecular Nanofabrication Group of the MESA Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Pascal Jonkheijm
- Bioinspired Molecular Engineering Laboratory of the MIRA Institute of Biomedical Technology and Technical Medicine and the Molecular Nanofabrication Group of the MESA Institute for Nanotechnology; University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
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18
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Blass J, Brunke J, Emmerich F, Przybylski C, Garamus VM, Feoktystov A, Bennewitz R, Wenz G, Albrecht M. Interactions between shape-persistent macromolecules as probed by AFM. Beilstein J Org Chem 2017; 13:938-951. [PMID: 28684975 PMCID: PMC5480325 DOI: 10.3762/bjoc.13.95] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 04/24/2017] [Indexed: 12/15/2022] Open
Abstract
Water-soluble shape-persistent cyclodextrin (CD) polymers with amino-functionalized end groups were prepared starting from diacetylene-modified cyclodextrin monomers by a combined Glaser coupling/click chemistry approach. Structural perfection of the neutral CD polymers and inclusion complex formation with ditopic and monotopic guest molecules were proven by MALDI-TOF and UV-vis measurements. Small-angle neutron and X-ray (SANS/SAXS) scattering experiments confirm the stiffness of the polymer chains with an apparent contour length of about 130 Å. Surface modification of planar silicon wafers as well as AFM tips was realized by covalent bound formation between the terminal amino groups of the CD polymer and a reactive isothiocyanate-silane monolayer. Atomic force measurements of CD polymer decorated surfaces show enhanced supramolecular interaction energies which can be attributed to multiple inclusion complexes based on the rigidity of the polymer backbone and the regular configuration of the CD moieties. Depending on the geometrical configuration of attachment anisotropic adhesion characteristics of the polymer system can be distinguished between a peeling and a shearing mechanism.
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Affiliation(s)
- Johanna Blass
- INM-Leibniz-Institute for New Materials, Saarland University, Campus D 2.2, D-66123 Saarbrücken, Germany
- Physics Department, Saarland University, Campus D 2.2, D-66123 Saarbrücken, Germany
| | - Jessica Brunke
- Organic Macromolecular Chemistry, Saarland University, Campus C 4.2, D-66123 Saarbrücken, Germany
| | - Franziska Emmerich
- INM-Leibniz-Institute for New Materials, Saarland University, Campus D 2.2, D-66123 Saarbrücken, Germany
- Physics Department, Saarland University, Campus D 2.2, D-66123 Saarbrücken, Germany
| | - Cédric Przybylski
- UPMC, IPCM-CNRS UMR 8232, Sorbonne Universités, 75252 Paris Cedex 05, France
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht (HZG), Centre for Materials and Costal Research, Max-Planck-Str. 1, 21502 Geesthacht, Germany
| | - Artem Feoktystov
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Roland Bennewitz
- INM-Leibniz-Institute for New Materials, Saarland University, Campus D 2.2, D-66123 Saarbrücken, Germany
- Physics Department, Saarland University, Campus D 2.2, D-66123 Saarbrücken, Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry, Saarland University, Campus C 4.2, D-66123 Saarbrücken, Germany
| | - Marcel Albrecht
- Organic Macromolecular Chemistry, Saarland University, Campus C 4.2, D-66123 Saarbrücken, Germany
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19
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Sankaran S, Jaatinen L, Brinkmann J, Zambelli T, Vörös J, Jonkheijm P. Cell Adhesion on Dynamic Supramolecular Surfaces Probed by Fluid Force Microscopy-Based Single-Cell Force Spectroscopy. ACS NANO 2017; 11:3867-3874. [PMID: 28319669 PMCID: PMC5406783 DOI: 10.1021/acsnano.7b00161] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/20/2017] [Indexed: 05/23/2023]
Abstract
Biomimetic and stimuli-responsive cell-material interfaces are actively being developed to study and control various cell-dynamics phenomena. Since cells naturally reside in the highly dynamic and complex environment of the extracellular matrix, attempts are being made to replicate these conditions in synthetic biomaterials. Supramolecular chemistry, dealing with noncovalent interactions, has recently provided possibilities to incorporate such dynamicity and responsiveness in various types of architectures. Using a cucurbit[8]uril-based host-guest system, we have successfully established a dynamic and electrochemically responsive interface for the display of the integrin-specific ligand, Arg-Gly-Asp (RGD), to promote cell adhesion. Due to the weak nature of the noncovalent forces by which the components at the interface are held together, we expected that cell adhesion would also be weaker in comparison to traditional interfaces where ligands are usually immobilized by covalent linkages. To assess the stability and limitations of our noncovalent interfaces, we performed single-cell force spectroscopy studies using fluid force microscopy. This technique enabled us to measure rupture forces of multiple cells that were allowed to adhere for several hours on individual substrates. We found that the rupture forces of cells adhered to both the noncovalent and covalent interfaces were nearly identical for up to several hours. We have analyzed and elucidated the reasons behind this result as a combination of factors including the weak rupture force between linear Arg-Gly-Asp and integrin, high surface density of the ligand, and increase in effective concentration of the supramolecular components under spread cells. These characteristics enable the construction of highly dynamic biointerfaces without compromising cell-adhesive properties.
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Affiliation(s)
- Shrikrishnan Sankaran
- Bioinspired
Molecular Engineering Laboratory, MIRA Institute for
Biomedical Research and Technical Medicine and Molecular Nanofabrication Group,
MESA+ Institute for Nanotechnology, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Leena Jaatinen
- Department
of Electronics and Communications Engineering, Tampere University of Technology, BioMediTech, Finn-Medi 1 L 4, Biokatu 6, FI-33520 Tampere, Finland
- Laboratory
of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Jenny Brinkmann
- Bioinspired
Molecular Engineering Laboratory, MIRA Institute for
Biomedical Research and Technical Medicine and Molecular Nanofabrication Group,
MESA+ Institute for Nanotechnology, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Tomaso Zambelli
- Laboratory
of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Janos Vörös
- Laboratory
of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Pascal Jonkheijm
- Bioinspired
Molecular Engineering Laboratory, MIRA Institute for
Biomedical Research and Technical Medicine and Molecular Nanofabrication Group,
MESA+ Institute for Nanotechnology, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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20
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Walsh-Korb Z, Yu Y, Janeček ER, Lan Y, Del Barrio J, Williams PE, Zhang X, Scherman OA. Single-Molecule Force Spectroscopy Quantification of Adhesive Forces in Cucurbit[8]Uril Host-Guest Ternary Complexes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1343-1350. [PMID: 28055217 DOI: 10.1021/acs.langmuir.6b03457] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cucurbit[8]uril (CB[8]) heteroternary complexes display certain characteristics making them well-suited for molecular level adhesives. In particular, careful choice of host-guest binding pairs enables specific, fully reversible adhesion. Understanding the effect of the environment is also critical when developing new molecular level adhesives. Here we explore the binding forces involved in the methyl viologen·CB[8]·naphthol heteroternary complex using single-molecule force spectroscopy (SMFS) under a variety of conditions. From SMFS, the interaction of a single ternary complex was found to be in the region of 140 pN. Additionally, a number of surface interactions could be readily differentiated using the SMFS technique allowing for a deeper understanding of the dynamic heteroternary CB[8] system on the single-molecule scale.
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Affiliation(s)
- Zarah Walsh-Korb
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Ying Yu
- Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Emma-Rose Janeček
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Yang Lan
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Jesús Del Barrio
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Paul E Williams
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Xi Zhang
- Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Oren A Scherman
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
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21
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Liese S, Gensler M, Krysiak S, Schwarzl R, Achazi A, Paulus B, Hugel T, Rabe JP, Netz RR. Hydration Effects Turn a Highly Stretched Polymer from an Entropic into an Energetic Spring. ACS NANO 2017; 11:702-712. [PMID: 27977927 DOI: 10.1021/acsnano.6b07071] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polyethylene glycol (PEG) is a structurally simple and nontoxic water-soluble polymer that is widely used in medical and pharmaceutical applications as molecular linker and spacer. In such applications, PEG's elastic response against conformational deformations is key to its function. According to text-book knowledge, a polymer reacts to the stretching of its end-to-end separation by a decrease in entropy that is due to the reduction of available conformations, which is why polymers are commonly called entropic springs. By a combination of single-molecule force spectroscopy experiments with molecular dynamics simulations in explicit water, we show that entropic hydration effects almost exactly compensate the chain conformational entropy loss at high stretching. Our simulations reveal that this entropic compensation is due to the stretching-induced release of water molecules that in the relaxed state form double hydrogen bonds with PEG. As a consequence, the stretching response of PEG is predominantly of energetic, not of entropic, origin at high forces and caused by hydration effects, while PEG backbone deformations only play a minor role. These findings demonstrate the importance of hydration for the mechanics of macromolecules and constitute a case example that sheds light on the antagonistic interplay of conformational and hydration degrees of freedom.
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Affiliation(s)
| | - Manuel Gensler
- Department of Physics and IRIS Adlershof, Humboldt-Universität zu Berlin , Berlin 12489, Germany
| | - Stefanie Krysiak
- Physik Department and IMETUM, Technische Universität München , Garching 85748, Germany
| | | | | | | | - Thorsten Hugel
- Institute of Physical Chemistry, University of Freiburg , Freiburg 79104, Germany
| | - Jürgen P Rabe
- Department of Physics and IRIS Adlershof, Humboldt-Universität zu Berlin , Berlin 12489, Germany
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22
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Blass J, Albrecht M, Wenz G, Zang YN, Bennewitz R. Single-molecule force spectroscopy of fast reversible bonds. Phys Chem Chem Phys 2017; 19:5239-5245. [DOI: 10.1039/c6cp07532k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cantilever stiffness dominates AFM force spectroscopy of fast reversible bonds. Fast rebinding and fluctuations of compliant linkers are averaged by the slow dynamics of the cantilever.
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Affiliation(s)
- Johanna Blass
- INM – Leibniz Institute for New Materials and Physics Department
- Saarland University
- 66123 Saabrücken
- Germany
| | - Marcel Albrecht
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saabrücken
- Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saabrücken
- Germany
| | - Yan Nan Zang
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saabrücken
- Germany
| | - Roland Bennewitz
- INM – Leibniz Institute for New Materials and Physics Department
- Saarland University
- 66123 Saabrücken
- Germany
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23
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24
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Hu Q, Yang H, Wang Y, Xu S. Quantitatively resolving multivalent interactions on a macroscopic scale using force spectroscopy. Chem Commun (Camb) 2016; 52:3705-8. [PMID: 26864087 DOI: 10.1039/c5cc10535h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Multivalent interactions remain difficult to be characterized and consequently controlled, particularly on a macroscopic scale. Using force-induced remnant magnetization spectroscopy (FIRMS), we have resolved the single-, double-, and triple-biotin-streptavidin interactions, multivalent DNA interactions and CXCL12-CXCR4 interactions on millimetre-scale surfaces. Our results establish FIRMS as a viable method for systematic resolution and controlled formation of multivalent interactions.
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Affiliation(s)
- Qiongzheng Hu
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
| | - Haopeng Yang
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA.
| | - Yuhong Wang
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA.
| | - Shoujun Xu
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
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25
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Wang W, Voigt A, Wolff MW, Reichl U, Sundmacher K. Binding kinetics and multi-bond: Finding correlations by synthesizing interactions between ligand-coated bionanoparticles and receptor surfaces. Anal Biochem 2016; 505:8-17. [PMID: 27108189 DOI: 10.1016/j.ab.2016.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 03/08/2016] [Accepted: 04/03/2016] [Indexed: 12/11/2022]
Abstract
The number of bonds formed between one single bionanoparticle and many surface receptors is an important subject to be studied but is seldom quantitatively investigated. A new evaluation of the correlation between binding kinetics and number of bonds is presented by varying ligand density and receptor density. An experimental system was developed using measurements with surface plasmon resonance spectroscopy. A corresponding multi-site adsorption model elucidated the correlation. The results show that with the increase of the receptor density, the adsorption rate first decreased when the number of bonds was below a maximum value and then increased when the number of bonds stayed at this maximum value. The investigation on ligand density variation suggests that the coating density on top of the bionanoparticle surface may have a particular value below which more ligand will accelerate the adsorption rate. The ratio of ligand amount bound by the receptors to the total ligand amount associated with a single bionanoparticle will remain constant even if one attaches more ligands to a bionanoparticle. We envision that the bionanoparticle desorption will not depend on density changes from either ligand or receptor when the number of bonds reaches a specific efficient value.
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Affiliation(s)
- Wenjing Wang
- Max Planck Institute for Dynamics of Complex Technical Systems, D-39106 Magdeburg, Germany.
| | - Andreas Voigt
- Chair for Process Systems Engineering, Otto-von-Guericke University Magdeburg, D-39106 Magdeburg, Germany
| | - Michael W Wolff
- Max Planck Institute for Dynamics of Complex Technical Systems, D-39106 Magdeburg, Germany; Chair for Bioprocess Engineering, Otto-von-Guericke University Magdeburg, D-39106 Magdeburg, Germany
| | - Udo Reichl
- Max Planck Institute for Dynamics of Complex Technical Systems, D-39106 Magdeburg, Germany; Chair for Bioprocess Engineering, Otto-von-Guericke University Magdeburg, D-39106 Magdeburg, Germany
| | - Kai Sundmacher
- Max Planck Institute for Dynamics of Complex Technical Systems, D-39106 Magdeburg, Germany; Chair for Process Systems Engineering, Otto-von-Guericke University Magdeburg, D-39106 Magdeburg, Germany
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26
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Biomolecule–nanoparticle interactions: Elucidation of the thermodynamics by isothermal titration calorimetry. Biochim Biophys Acta Gen Subj 2016; 1860:945-956. [DOI: 10.1016/j.bbagen.2016.01.027] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 01/29/2016] [Accepted: 01/30/2016] [Indexed: 12/18/2022]
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27
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Guerra R, Benassi A, Vanossi A, Ma M, Urbakh M. Friction and adhesion mediated by supramolecular host-guest complexes. Phys Chem Chem Phys 2016; 18:9248-54. [PMID: 26975343 DOI: 10.1039/c6cp00661b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The adhesive and frictional response of an AFM tip connected to a substrate through supramolecular host-guest complexes is investigated by dynamic Monte Carlo simulations. Here, the variation of the pull-off force with the unloading rate recently observed in experiments is unraveled by evidencing simultaneous (progressive) breaking of the bonds at fast (slow) rates. The model reveals the origin of the observed plateaus in the retraction force as a function of the tip-surface distance, showing that they result from the tip geometrical features. In lateral sliding, the model exhibits a wide range of dynamic behaviors ranging from smooth sliding to stick-slip at different velocities, with the average friction force determined by the characteristic formation/rupture rates of the complexes. In particular, it is shown that for some molecular complexes friction can become almost constant over a wide range of velocities. Also, we show the possibility of exploiting the ageing effect through slide-hold-slide experiments, in order to infer the characteristic formation rate. Finally, our model predicts a novel "anti-ageing" effect which is characterized by a decrease of the static friction force with the hold time. Such an effect is explained in terms of enhancement of adhesion during sliding, especially observed at high driving velocities.
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Affiliation(s)
- Roberto Guerra
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy. and CNR-IOM Democritos National Simulation Center, Via Bonomea 265, 34136 Trieste, Italy
| | - Andrea Benassi
- Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany and Dresden Center for Computational Materials Science (DCCMS), TU Dresden, 01062 Dresden, Germany
| | - Andrea Vanossi
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy. and CNR-IOM Democritos National Simulation Center, Via Bonomea 265, 34136 Trieste, Italy
| | - Ming Ma
- School of Chemistry, Tel Aviv University, 69978 Tel Aviv, Israel and The Sackler Center for Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Michael Urbakh
- School of Chemistry, Tel Aviv University, 69978 Tel Aviv, Israel and The Sackler Center for Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 6997801, Israel
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28
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Nietzold C, Dietrich P, Lippitz A, Panne U, Unger W. Cyclodextrin - ferrocene host - guest complexes on silicon oxide surfaces. SURF INTERFACE ANAL 2016. [DOI: 10.1002/sia.5958] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- C. Nietzold
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - P. M. Dietrich
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - A. Lippitz
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - U. Panne
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - W. E. S. Unger
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
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29
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Three silver (I) supramolecular compounds constructed from pyridinium or methylimidazolium polycations: Synthesis, crystal structure and properties. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0888-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Five hybrid thiocyanate networks oriented by polyvalent cationic templates: Synthesis, structure and properties. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.07.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Guo K, Zhang DL, Zhang XM, Zhang J, Ding LS, Li BJ, Zhang S. Conductive Elastomers with Autonomic Self-Healing Properties. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505790] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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32
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Guo K, Zhang DL, Zhang XM, Zhang J, Ding LS, Li BJ, Zhang S. Conductive Elastomers with Autonomic Self-Healing Properties. Angew Chem Int Ed Engl 2015; 54:12127-33. [DOI: 10.1002/anie.201505790] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/27/2015] [Indexed: 12/11/2022]
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33
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Wang Q, Zhou C, Yang X, Liu L, Wang K. Probing interactions between human lung adenocarcinoma A549 cell and its aptamers at single-molecule resolution. J Mol Recognit 2015; 27:676-82. [PMID: 25277092 DOI: 10.1002/jmr.2391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 04/23/2014] [Accepted: 05/08/2014] [Indexed: 11/09/2022]
Abstract
Because cell-specific aptamers have high potential for biomedical applications, investigation of the interaction between cell and its aptamers may be of key importance for an improved understanding of biochemical processes. Herein, the interaction between human lung adenocarcinoma A549 cell and its four aptamers was explored using single-molecule force spectroscopy (SMFS). The values of the unbinding force varied from 117.1 to 171.0 pN at the loading rate of 1.8 × 10(5) pN/s. Based on the dependence of singe molecule force on the atomic force microscopy loading rate, the corresponding kinetic parameters were obtained. The results revealed two activation barriers and two transient states in the unbinding process of aptamer/cell interaction. More importantly, the binding sites on A549 cells with its four aptamers were defined to be different using SMFS and flow cytometry. This work demonstrated that SMFS can be used as a powerful tool for exploring the aptamer/cell binding behavior at the single-molecule level, and may provide valuable information for the design and application of aptamer probes.
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Affiliation(s)
- Qing Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, College of Biology, Hunan University, Changsha, 410082, China
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34
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Blass J, Albrecht M, Bozna BL, Wenz G, Bennewitz R. Dynamic effects in friction and adhesion through cooperative rupture and formation of supramolecular bonds. NANOSCALE 2015; 7:7674-7681. [PMID: 25833225 DOI: 10.1039/c5nr00329f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We introduce a molecular toolkit for studying the dynamics in friction and adhesion from the single molecule level to effects of multivalency. As experimental model system we use supramolecular bonds established by the inclusion of ditopic adamantane connector molecules into two surface-bound cyclodextrin molecules, attached to a tip of an atomic force microscope (AFM) and to a flat silicon surface. The rupture force of a single bond does not depend on the pulling rate, indicating that the fast complexation kinetics of adamantane and cyclodextrin are probed in thermal equilibrium. In contrast, the pull-off force for a group of supramolecular bonds depends on the unloading rate revealing a non-equilibrium situation, an effect discussed as the combined action of multivalency and cantilever inertia effects. Friction forces exhibit a stick-slip characteristic which is explained by the cooperative rupture of groups of host-guest bonds and their rebinding. No dependence of friction on the sliding velocity has been observed in the accessible range of velocities due to fast rebinding and the negligible delay of cantilever response in AFM lateral force measurements.
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Affiliation(s)
- Johanna Blass
- INM - Leibniz Institute of New Materials, Campus D2 2, Saarland University, 66123 Saarbrücken, Germany.
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35
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Leistra AN, Han JH, Tang S, Orr BG, Banaszak Holl MM, Choi SK, Sinniah K. Force spectroscopy of multivalent binding of riboflavin-conjugated dendrimers to riboflavin binding protein. J Phys Chem B 2015; 119:5785-92. [PMID: 25872803 DOI: 10.1021/acs.jpcb.5b01028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Putative riboflavin receptors are considered as biomarkers due to their overexpression in breast and prostate cancers. Hence, these receptors can be potentially exploited for use in targeted drug delivery systems where dendrimer nanoparticles with multivalent ligand attachments can lead to greater specificity in cellular interactions. In this study, the single molecule force spectroscopy technique was used to assess the physical strength of multivalent interactions by employing a riboflavin (RF)-conjugated generation 5 PAMAM dendrimer G5(RF)n nanoparticle. By varying the average RF ligand valency (n = 0, 3, 5), the rupture force was measured between G5(RF)n and the riboflavin binding protein (RFBP). The rupture force increased when the valency of RF increased. We observed at the higher valency (n = 5) three binding events that increased in rupture force with increasing loading rate. Assuming a single energy barrier, the Bell-Evans model was used to determine the kinetic off-rate and barrier width for all binding interactions. The analysis of our results appears to indicate that multivalent interactions are resulting in changes to rupture force and kinetic off-rates.
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Affiliation(s)
| | | | - Shengzhuang Tang
- ‡Michigan Nanotechnology Institute for Medicine and Biological Sciences, Ann Arbor, Michigan 48109, United States
| | - Bradford G Orr
- ‡Michigan Nanotechnology Institute for Medicine and Biological Sciences, Ann Arbor, Michigan 48109, United States.,⊥Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mark M Banaszak Holl
- ‡Michigan Nanotechnology Institute for Medicine and Biological Sciences, Ann Arbor, Michigan 48109, United States.,§Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States.,∥Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Seok Ki Choi
- ‡Michigan Nanotechnology Institute for Medicine and Biological Sciences, Ann Arbor, Michigan 48109, United States.,#Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
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36
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Gutiérrez Sánchez C, Su Q, Schönherr H, Grininger M, Nöll G. Multi-Ligand-Binding Flavoprotein Dodecin as a Key Element for Reversible Surface Modification in Nano-biotechnology. ACS NANO 2015; 9:3491-3500. [PMID: 25738566 DOI: 10.1021/nn506993s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper the multiple (re)programming of protein-DNA nanostructures comprising generation, deletion, and reprogramming on the same flavin-DNA-modified surface is introduced. This work is based on a systematic study of the binding affinity of the multi-ligand-binding flavoprotein dodecin on flavin-terminated DNA monolayers by surface plasmon resonance and quartz crystal microbalance with dissipation (QCM-D) measurements, surface plasmon fluorescence spectroscopy (SPFS), and dynamic AFM force spectroscopy. Depending on the flavin surface coverage, a single apododecin is captured by one or more surface-immobilized flavins. The corresponding complex binding and unbinding rate constants kon(QCM) = 7.7 × 10(3) M(-1)·s(-1) and koff(QCM) = 4.5 × 10(-3) s(-1) (Kd(QCM) = 580 nM) were determined by QCM and were found to be in agreement with values for koff determined by SPFS and force spectroscopy. Even though a single apododecin-flavin bond is relatively weak, stable dodecin monolayers were formed on flavin-DNA-modified surfaces at high flavin surface coverage due to multivalent interactions between apododecin bearing six binding pockets and the surface-bound flavin-DNA ligands. If bi- or multivalent flavin ligands are adsorbed on dodecin monolayers, stable sandwich-type surface-DNA-flavin-apododecin-flavin ligand arrays are obtained. Nevertheless, the apododecin flavin complex is easily and quantitatively disassembled by flavin reduction. Binding and release of apododecin are reversible processes, which can be carried out alternatingly several times to release one type of ligand by an external redox trigger and subsequently replace it with a different ligand. Hence the versatile concept of reprogrammable functional biointerfaces with the multi-ligand-binding flavoprotein dodecin is demonstrated.
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Affiliation(s)
| | | | | | - Martin Grininger
- ∥Goethe University Frankfurt, Riedberg Campus FMLS Building, Max-von-Laue Straße 15, 60438 Frankfurt am Main, Germany
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37
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Zhang WL, Liu M, Ma CJ, Zhang LR, Huang ZP, Zai YX, Yang Q, Niu YY, Liang Y. Self-assembly of five new organic–inorganic hybrids based on two new flexible tricationic templates. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Varner CT, Rosen T, Martin JT, Kane RS. Recent advances in engineering polyvalent biological interactions. Biomacromolecules 2015; 16:43-55. [PMID: 25426695 PMCID: PMC4294584 DOI: 10.1021/bm5014469] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/11/2014] [Indexed: 12/21/2022]
Abstract
Polyvalent interactions, where multiple ligands and receptors interact simultaneously, are ubiquitous in nature. Synthetic polyvalent molecules, therefore, have the ability to affect biological processes ranging from protein-ligand binding to cellular signaling. In this review, we discuss recent advances in polyvalent scaffold design and applications. First, we will describe recent developments in the engineering of polyvalent scaffolds based on biomolecules and novel materials. Then, we will illustrate how polyvalent molecules are finding applications as toxin and pathogen inhibitors, targeting molecules, immune response modulators, and cellular effectors.
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Affiliation(s)
- Chad T. Varner
- The Howard P. Isermann Department
of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Tania Rosen
- The Howard P. Isermann Department
of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Jacob T. Martin
- The Howard P. Isermann Department
of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Ravi S. Kane
- The Howard P. Isermann Department
of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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39
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Zhang L, Zhang H, Gao F, Peng H, Ruan Y, Xu Y, Weng W. Host–guest interaction between fluoro-substituted azobenzene derivative and cyclodextrins. RSC Adv 2015. [DOI: 10.1039/c4ra13283a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
This system is completely opposite to the conventional azobenzene/β-CD system in that cis-F-azo-COOH fits β-CD more tightly than its trans form.
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Affiliation(s)
- Lingxing Zhang
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
| | - Huan Zhang
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
| | - Fei Gao
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
| | - Huiying Peng
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
| | - Yonghong Ruan
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
| | - Yuanze Xu
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
| | - Wengui Weng
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- People's Republic of China
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40
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Blass J, Bozna BL, Albrecht M, Krings JA, Ravoo BJ, Wenz G, Bennewitz R. Switching adhesion and friction by light using photosensitive guest–host interactions. Chem Commun (Camb) 2015; 51:1830-3. [DOI: 10.1039/c4cc09204j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Friction and adhesion between two β-cyclodextrin functionalized surfaces can be switched reversibly by external light stimuli. The interaction is mediated by complexation with ditopic azobenzene guest molecules.
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Affiliation(s)
- Johanna Blass
- INM - Leibniz-Institute for New Materials
- Saarland University
- 66123 Saarbrücken
- Germany
- Physics Department
| | - Bianca L. Bozna
- INM - Leibniz-Institute for New Materials
- Saarland University
- 66123 Saarbrücken
- Germany
| | - Marcel Albrecht
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saarbrücken
- Germany
| | | | - Bart Jan Ravoo
- Organic Chemistry Institute
- University of Münster
- 48149 Münster
- Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saarbrücken
- Germany
| | - Roland Bennewitz
- INM - Leibniz-Institute for New Materials
- Saarland University
- 66123 Saarbrücken
- Germany
- Physics Department
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41
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Bacharouche J, Degardin M, Jierry L, Carteret C, Lavalle P, Hemmerlé J, Senger B, Auzély-Velty R, Boulmedais F, Boturyn D, Coche-Guérente L, Schaaf P, Francius G. Multivalency: influence of the residence time and the retraction rate on rupture forces measured by AFM. J Mater Chem B 2015; 3:1801-1812. [DOI: 10.1039/c4tb01261e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular orientation and flexibility of β-CD modulate the contact time and the multivalence effects of specific host–guest interactions.
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42
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Stoffelen C, Staltari-Ferraro E, Huskens J. Effects of the molecular weight and the valency of guest-modified poly(ethylene glycol)s on the stability, size and dynamics of supramolecular nanoparticles. J Mater Chem B 2015; 3:6945-6952. [DOI: 10.1039/c5tb01111f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The length and valency of PEG-based stopper molecules have a pronounced effect on the self-assembly, size, stability and dynamics of supramolecular nanoparticles.
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Affiliation(s)
- Carmen Stoffelen
- Molecular NanoFabrication Group
- MESA + Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - Eugenio Staltari-Ferraro
- Molecular NanoFabrication Group
- MESA + Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - Jurriaan Huskens
- Molecular NanoFabrication Group
- MESA + Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
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43
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Cabanas-Danés J, Rodrigues ED, Landman E, van Weerd J, van Blitterswijk C, Verrips T, Huskens J, Karperien M, Jonkheijm P. A Supramolecular Host–Guest Carrier System for Growth Factors Employing VHH Fragments. J Am Chem Soc 2014; 136:12675-81. [DOI: 10.1021/ja505695w] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jordi Cabanas-Danés
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | | | | | - Jasper van Weerd
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | - Clemens van Blitterswijk
- Department
of Complex Tissue and Organ Regeneration, MERLN Institute, Maastricht University, Netherlands
| | - Theo Verrips
- Cellular
Architecture and Dynamics, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - Jurriaan Huskens
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | | | - Pascal Jonkheijm
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
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44
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Shen Q, Liu L, Zhang W. Fabrication of a photocontrolled surface with switchable wettability based on host-guest inclusion complexation and protein resistance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9361-9369. [PMID: 25053175 DOI: 10.1021/la500792v] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel surface-modification strategy has been developed for the construction of a photocontrolled silicon wafer surface with switchable wettability based on host-guest inclusion complexation. The silicon wafer was first modified by guest molecule azobenzene (Azo) via a silanization reaction. Subsequently, a series of polymers with different polarities were attached to host molecule β-cyclodextrin (β-CD) to prepare β-CD-containing hemitelechelic polymers via click chemistry. Finally, a photocontrolled silicon wafer surface modified with polymers was fabricated by inclusion complexation between β-CD and Azo, and the surface properties of the substrate are dependent on the polymers we used. The elemental composition, surface morphology, and hydrophilic/hydrophobic property of the modified surfaces were characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscope, and contact angle measurements, respectively. The antifouling property of the PEG-functionalized surface was evaluated by a protein adsorption assay using bovine serum albumin, which was also characterized by XPS. The results demonstrate that the surface modified with PEG possesses good protein-resistant properties.
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Affiliation(s)
- Qiongxia Shen
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
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45
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Jiao F, Fan H, Yang G, Zhang F, He P. Directly investigating the interaction between aptamers and thrombin by atomic force microscopy. J Mol Recognit 2014; 26:672-8. [PMID: 24277612 DOI: 10.1002/jmr.2312] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 07/21/2013] [Accepted: 08/21/2013] [Indexed: 11/06/2022]
Abstract
Aptamers are single-stranded nucleic acid molecules that can be used for protein recognition, detection, and inhibition. Over the past decades, two thrombin-binding aptamers (15apt and 27apt) were reported by systemic evolution of ligands by exponential enrichment technique. Though many studies have been reported about the interactions between the aptamers and thrombin by atomic force microscopy, the thrombins in those studies were all immobilized by chemical agents. Recently, we developed a new method using atomic force microscopy to directly investigate the specific interactions between thrombin and its two aptamers without immobilizing the thrombin. Furthermore, the unbinding dynamics and dissociation energy landscapes of aptamer/thrombin were discussed. The results indicate that the underlying interaction mechanisms of thrombin with its two aptamers will be similar despite that the structures of 15apt and 27apt are different in buffer solution.
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Affiliation(s)
- Fang Jiao
- Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
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46
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Méndez-Ardoy A, Steentjes T, Kudernac T, Huskens J. Self-assembled monolayers on gold of β-cyclodextrin adsorbates with different anchoring groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3467-3476. [PMID: 24593300 DOI: 10.1021/la500172a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We designed multivalent β-cyclodextrin-based adsorbates bearing different anchoring groups aiming to yield stable monolayers with improved packing and close contact of the cavity to the gold surface. Toward this end the primary rim of the β-cyclodextrin was decorated with several functional groups, namely iodide, nitrile, amine, isothiocyanate, methyl sulfide, and isocyanide. Monolayers formed by these adsorbates were characterized by contact angle measurements, surface plasmon resonance spectroscopy, polarization modulation infrared reflection adsorption spectroscopy, X-ray photoelectron spectroscopy, and electrochemistry. The nature of the anchoring group influenced the adsorption kinetics, thickness, layer stability, number of anchoring groups bounded to the surface, and packing in the resulting monolayers. Therefore, chemical manipulation of multivalent adsorbates can be used to modify the properties of their monolayers.
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Affiliation(s)
- Alejandro Méndez-Ardoy
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
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47
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Liu K, Zheng X, Samuel AZ, Ramkumar SG, Ghosh S, Tan X, Wang D, Shuai Z, Ramakrishnan S, Liu D, Zhang X. Stretching single polymer chains of donor-acceptor foldamers: toward the quantitative study on the extent of folding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14438-14443. [PMID: 24168699 DOI: 10.1021/la403709u] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Single-molecule force spectroscopy has proven to be an efficient tool for the quantitative characterization of flexible foldamers on the single-molecule level in this study. The extent of folding has been estimated quantitatively for the first time to the best of our knowledge, which is crucial for a better understanding of the "folding-process" on single-molecule level. Therefore, this study may provide a guidance to regulate folding for realizing rational control over the functions of bulk materials.
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Affiliation(s)
- Kai Liu
- Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry, Tsinghua University , Beijing 100084, People's Republic of China
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Safenkova IV, Zherdev AV, Dzantievf BB. Application of atomic force microscopy for characteristics of single intermolecular interactions. BIOCHEMISTRY (MOSCOW) 2013; 77:1536-52. [PMID: 23379527 DOI: 10.1134/s000629791213010x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Atomic force microscopy (AFM) can be used to make measurements in vacuum, air, and water. The method is able to gather information about intermolecular interaction forces at the level of single molecules. This review encompasses experimental and theoretical data on the characterization of ligand-receptor interactions by AFM. The advantage of AFM in comparison with other methods developed for the characterization of single molecular interactions is its ability to estimate not only rupture forces, but also thermodynamic and kinetic parameters of the rupture of a complex. The specific features of force spectroscopy applied to ligand-receptor interactions are examined in this review from the stage of the modification of the substrate and the cantilever up to the processing and interpretation of the data. We show the specificities of the statistical analysis of the array of data based on the results of AFM measurements, and we discuss transformation of data into thermodynamic and kinetic parameters (kinetic dissociation constant, Gibbs free energy, enthalpy, and entropy). Particular attention is paid to the study of polyvalent interactions, where the definition of the constants is hampered due to the complex stoichiometry of the reactions.
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Affiliation(s)
- I V Safenkova
- Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, 119071, Russia.
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Lv Z, Condron MM, Teplow DB, Lyubchenko YL. Nanoprobing of the effect of Cu(2+) cations on misfolding, interaction and aggregation of amyloid β peptide. J Neuroimmune Pharmacol 2013; 8:262-73. [PMID: 23143330 PMCID: PMC3586772 DOI: 10.1007/s11481-012-9416-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 10/29/2012] [Indexed: 12/15/2022]
Abstract
Misfolding and aggregation of the amyloid β-protein (Aβ) are hallmarks of Alzheimer's disease. Both processes are dependent on the environmental conditions, including the presence of divalent cations, such as Cu(2+). Cu(2+) cations regulate early stages of Aβ aggregation, but the molecular mechanism of Cu(2+) regulation is unknown. In this study we applied single molecule AFM force spectroscopy to elucidate the role of Cu(2+) cations on interpeptide interactions. By immobilizing one of two interacting Aβ42 molecules on a mica surface and tethering the counterpart molecule onto the tip, we were able to probe the interpeptide interactions in the presence and absence of Cu(2+) cations at pH 7.4, 6.8, 6.0, 5.0, and 4.0. The results show that the presence of Cu(2+) cations change the pattern of Aβ interactions for pH values between pH 7.4 and pH 5.0. Under these conditions, Cu(2+) cations induce Aβ42 peptide structural changes resulting in N-termini interactions within the dimers. Cu(2+) cations also stabilize the dimers. No effects of Cu(2+) cations on Aβ-Aβ interactions were observed at pH 4.0, suggesting that peptide protonation changes the peptide-cation interaction. The effect of Cu(2+) cations on later stages of Aβ aggregation was studied by AFM topographic images. The results demonstrate that substoichiometric Cu(2+) cations accelerate the formation of fibrils at pH 7.4 and 5.0, whereas no effect of Cu(2+) cations was observed at pH 4.0. Taken together, the combined AFM force spectroscopy and imaging analyses demonstrate that Cu(2+) cations promote both the initial and the elongation stages of Aβ aggregation, but protein protonation diminishes the effect of Cu(2+).
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Affiliation(s)
- Zhengjian Lv
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, Nebraska 68198
| | | | - David B. Teplow
- Department of Neurology, David Geffen School of Medicine at UCLA
- Molecular Biology and Brain Research Institutes, and Mary S. Easton Center for Alzheimer’s Disease Research at UCLA, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Yuri L. Lyubchenko
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, Nebraska 68198
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