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Martínez-Negro M, Russo D, Prévost S, Teixeira J, Morsbach S, Landfester K. Poly(ethylene glycol)-Based Surfactant Reduces the Conformational Change of Adsorbed Proteins on Nanoparticles. Biomacromolecules 2022; 23:4282-4288. [PMID: 36083699 PMCID: PMC9554902 DOI: 10.1021/acs.biomac.2c00744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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When in contact with a biological medium, the surfaces
of nanoparticles
are usually covered by proteins. In this regard, it was found that
poly(ethylene glycol) (PEG) promotes the “stealth effect”.
This implies a reduction of unspecific protein adsorption and cellular
uptake. Although information about the PEG–protein interaction
was reported, more accurate and sophisticated structure and dynamics
analyses are needed to understand the interaction processes in detail.
This work studies the PEG–protein interaction using model nanoparticles
stabilized either by the PEG-based surfactant Lutensol AT50 or sodium
dodecyl sulfate. The interaction with human serum albumin was studied
using neutron scattering techniques. The parameters obtained by small-angle
neutron scattering yielded information about the adsorbed protein
layer thickness. Protein structure changes were detected via differential
scanning fluorimetry and elastic neutron scattering. This combination
gives a better insight into the PEG–protein interaction, contributing
to the design of nanomaterials for medical applications.
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Affiliation(s)
- María Martínez-Negro
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Daniela Russo
- Consiglio Nazionale delle Ricerche (Instituto Officina dei Materiali) and INSIDE@ILL c/o Institut Laue-Langevin, 38042 Grenoble, France
| | | | - José Teixeira
- Université Paris-Saclay, Laboratoire Léon-Brillouin, UMR12 CEA-CNRS, CEA-Saclay, F-91191 Gif-sur-Yvette CEDEX, France
| | - Svenja Morsbach
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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Lupi L, Bracco B, Sassi P, Corezzi S, Morresi A, Fioretto D, Comez L, Paolantoni M. Hydration Dynamics of Model Peptides with Different Hydrophobic Character. Life (Basel) 2022; 12:life12040572. [PMID: 35455063 PMCID: PMC9031890 DOI: 10.3390/life12040572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 11/16/2022] Open
Abstract
The multi-scale dynamics of aqueous solutions of the hydrophilic peptide N-acetyl-glycine-methylamide (NAGMA) have been investigated through extended frequency-range depolarized light scattering (EDLS), which enables the broad-band detection of collective polarizability anisotropy fluctuations. The results have been compared to those obtained for N-acetyl-leucinemethylamide (NALMA), an amphiphilic peptide which shares with NAGMA the same polar backbone, but also contains an apolar group. Our study indicates that the two model peptides induce similar effects on the fast translational dynamics of surrounding water. Both systems slow down the mobility of solvating water molecules by a factor 6–8, with respect to the bulk. Moreover, the two peptides cause a comparable far-reaching spatial perturbation extending to more than two hydration layers in diluted conditions. The observed concentration dependence of the hydration number is explained considering the random superposition of different hydration shells, while no indication of solute aggregation phenomena has been found. The results indicate that the effect on the dynamics of water solvating the amphiphilic peptide is dominated by the hydrophilic backbone. The minor impact of the hydrophobic moiety on hydration features is consistent with structural findings derived by Fourier transform infrared (FTIR) measurements, performed in attenuated total reflectance (ATR) configuration. Additionally, we give evidence that, for both systems, the relaxation mode in the GHz frequency range probed by EDLS is related to solute rotational dynamics. The rotation of NALMA occurs at higher timescales, with respect to the rotation of NAGMA; both processes are significantly slower than the structural dynamics of hydration water, suggesting that solute and solvent motions are uncoupled. Finally, our results do not indicate the presence of super-slow water (relaxation times in the order of tens of picoseconds) around the peptides investigated.
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Affiliation(s)
- Laura Lupi
- Dipartimento di Matematica e Fisica, Università Roma Tre, 00146 Rome, Italy;
| | - Brenda Bracco
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, 06123 Perugia, Italy; (B.B.); (P.S.); (A.M.)
| | - Paola Sassi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, 06123 Perugia, Italy; (B.B.); (P.S.); (A.M.)
| | - Silvia Corezzi
- Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, 06123 Perugia, Italy; (S.C.); (D.F.)
| | - Assunta Morresi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, 06123 Perugia, Italy; (B.B.); (P.S.); (A.M.)
| | - Daniele Fioretto
- Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, 06123 Perugia, Italy; (S.C.); (D.F.)
- IOM-CNR c/o Department of Physics and Geology, Università degli Studi di Perugia, 060123 Perugia, Italy
| | - Lucia Comez
- IOM-CNR c/o Department of Physics and Geology, Università degli Studi di Perugia, 060123 Perugia, Italy
- Correspondence: (L.C.); (M.P.)
| | - Marco Paolantoni
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, 06123 Perugia, Italy; (B.B.); (P.S.); (A.M.)
- Correspondence: (L.C.); (M.P.)
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Hydration of Simple Model Peptides in Aqueous Osmolyte Solutions. Int J Mol Sci 2021; 22:ijms22179350. [PMID: 34502252 PMCID: PMC8431001 DOI: 10.3390/ijms22179350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/13/2021] [Accepted: 08/24/2021] [Indexed: 12/13/2022] Open
Abstract
The biology and chemistry of proteins and peptides are inextricably linked with water as the solvent. The reason for the high stability of some proteins or uncontrolled aggregation of others may be hidden in the properties of their hydration water. In this study, we investigated the effect of stabilizing osmolyte–TMAO (trimethylamine N-oxide) and destabilizing osmolyte–urea on hydration shells of two short peptides, NAGMA (N-acetyl-glycine-methylamide) and diglycine, by means of FTIR spectroscopy and molecular dynamics simulations. We isolated the spectroscopic share of water molecules that are simultaneously under the influence of peptide and osmolyte and determined the structural and energetic properties of these water molecules. Our experimental and computational results revealed that the changes in the structure of water around peptides, caused by the presence of stabilizing or destabilizing osmolyte, are significantly different for both NAGMA and diglycine. The main factor determining the influence of osmolytes on peptides is the structural-energetic similarity of their hydration spheres. We showed that the chosen peptides can serve as models for various fragments of the protein surface: NAGMA for the protein backbone and diglycine for the protein surface with polar side chains.
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Russo D, Pelosi C, Wurm FR, Frick B, Ollivier J, Teixeira J. Insight into Protein-Polymer Conjugate Relaxation Dynamics: The Importance of Polymer Grafting. Macromol Biosci 2020; 20:e1900410. [PMID: 32285628 DOI: 10.1002/mabi.201900410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/27/2020] [Indexed: 01/03/2023]
Abstract
The bio and chemical physics of protein-polymer conjugates are related to parameters that characterize each component. With this work, it is intended to feature the dynamical properties of the protein-polymer conjugate myoglobin (Mb)-poly(ethyl ethylene phosphate), in the ps and ns time scales, in order to understand the respective roles of the protein and of the polymer size in the dynamics of the conjugate. Elastic and quasi-elastic neutron scattering is performed on completely hydrogenated samples with variable number of polymer chains covalently attached to the protein. The role of the polymer length in the protein solvation and internal dynamics is investigated using two conjugates formed by polymers of different molecular weight. It is confirmed that the flexibility of the complex increases with the number of grafted polymer chains and that a sharp dynamical transition appears when either grafting density or polymer molecular weight are high. It is shown that protein size is crucial for the polymer structural organization and interaction on the protein surface and it is established that the glass properties of the polymer change upon conjugation. The results give a better insight of the equivalence of the polymer coating and the role of water on the surface of proteins.
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Affiliation(s)
- Daniela Russo
- Consiglio Nazionale delle Ricerche & Istituto Officina dei Materiali c/o Institut Laue Langevin, Grenoble, 38042, France.,Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW, 2234, Australia
| | - Chiara Pelosi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi, Pisa, 56124, Italy
| | - Frederik R Wurm
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, Mainz, 55128, Germany
| | | | | | - Jose Teixeira
- Laboratoire Léon Brillouin (CEA/CNRS), CEA Saclay, Gif-sur-Yvette Cedex, 91191, France
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Mamontov E, O'Neill H. Microscopic relaxations in a protein sustained down to 160K in a non-glass forming organic solvent. Biochim Biophys Acta Gen Subj 2016; 1861:3513-3519. [PMID: 27154287 DOI: 10.1016/j.bbagen.2016.04.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 04/24/2016] [Accepted: 04/25/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND We have studied microscopic dynamics of a protein in carbon disulfide, a non-glass forming solvent, down to its freezing temperature of ca. 160K. METHODS We have utilized quasielastic neutron scattering. RESULTS A comparison of lysozyme hydrated with water and dissolved in carbon disulfide reveals a stark difference in the temperature dependence of the protein's microscopic relaxation dynamics induced by the solvent. In the case of hydration water, the common protein glass-forming solvent, the protein relaxation slows down in response to a large increase in the water viscosity on cooling down, exhibiting a well-known protein dynamical transition. The dynamical transition disappears in non-glass forming carbon disulfide, whose viscosity remains a weak function of temperature all the way down to freezing at just below 160K. The microscopic relaxation dynamics of lysozyme dissolved in carbon disulfide is sustained down to the freezing temperature of its solvent at a rate similar to that measured at ambient temperature. CONCLUSIONS Our results demonstrate that protein dynamical transition is not merely solvent-assisted, but rather solvent-induced, or, more precisely, is a reflection of the temperature dependence of the solvent's glass-forming dynamics. GENERAL SIGNIFICANCE We hypothesize that, if the long debated idea regarding the direct link between the microscopic relaxations and the biological activity in proteins is correct, then not only the microscopic relaxations, but also the activity, could be sustained in proteins all the way down to the freezing temperature of a non-glass forming solvent with a weak temperature dependence of its viscosity. This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo.
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Affiliation(s)
- E Mamontov
- Chemical and Engineering Materials Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States.
| | - H O'Neill
- Biology and Soft Matter Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
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Le Caër S, Klein G, Ortiz D, Lima M, Devineau S, Pin S, Brubach JB, Roy P, Pommeret S, Leibl W, Righini R, Renault JP. The effect of myoglobin crowding on the dynamics of water: an infrared study. Phys Chem Chem Phys 2015; 16:22841-52. [PMID: 25242637 DOI: 10.1039/c4cp03102d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solutions containing 8 and 32 wt% myoglobin are studied by means of infrared spectroscopy, as a function of temperature (290 K and lower temperatures), in the mid- and far-infrared spectral range. Moreover, ultrafast time-resolved infrared measurements are performed at ambient temperature in the O-D stretching region. The results evidence that the vibrational properties of water remain the same in these myoglobin solutions (anharmonicity, vibrational relaxation lifetime…) and in neat water. However, the collective properties of the water molecules are significantly affected by the presence of the protein: the orientational time increases, the solid-liquid transition is affected in the most concentrated solution and the dynamical transition of the protein is observed, from the point of view of water, even in the least concentrated solution, proving that the water and myoglobin dynamics are coupled.
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Affiliation(s)
- S Le Caër
- Institut Rayonnement Matière de Saclay, LIDyL et Service Interdisciplinaire sur les Systèmes Moléculaires et les Matériaux, UMR 3299, CNRS/CEA, Groupe Physico-Chimie sous Rayonnement, Bâtiment 546, F-91191 Gif-sur-Yvette Cedex, France.
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Russo D, Gonzalez MA, Pellegrini E, Combet J, Ollivier J, Teixeira J. Evidence of Dynamical Constraints Imposed by Water Organization around a Bio–Hydrophobic Interface. J Phys Chem B 2013; 117:2829-36. [DOI: 10.1021/jp3094885] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniela Russo
- CNR-IOM c/o Institut Laue Langevin, 6 rue J.
Horowitz BP156, F-38042 Grenoble, France
| | | | - Eric Pellegrini
- Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France
| | - J. Combet
- Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France
| | - J. Ollivier
- Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France
| | - José Teixeira
- Laboratoire Léon Brillouin (CEA/CNRS), CEA Saclay, 91191 Gif-sur-Yvette Cedex France
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Boopathi S, Kolandaivel P. Molecular dynamics simulations and density functional theory studies of NALMA and NAGMA dipeptides. J Biomol Struct Dyn 2013; 31:158-73. [DOI: 10.1080/07391102.2012.698380] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Teixeira J. Recent experimental aspects of the structure and dynamics of liquid and supercooled water. Mol Phys 2012. [DOI: 10.1080/00268976.2011.645894] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Mamontov E, Chu XQ. Water–protein dynamic coupling and new opportunities for probing it at low to physiological temperatures in aqueous solutions. Phys Chem Chem Phys 2012; 14:11573-88. [DOI: 10.1039/c2cp41443k] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Russo D, Pellegrini E, Gonzalez MA, Perticaroli S, Teixeira J. In situ molecular dynamics analysis of the water hydrogen bond at biomolecular sites: Hydrophobicity enhances dynamics heterogeneity. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.10.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Russo D, Teixeira J, Kneller L, Copley JRD, Ollivier J, Perticaroli S, Pellegrini E, Gonzalez MA. Vibrational Density of States of Hydration Water at Biomolecular Sites: Hydrophobicity Promotes Low Density Amorphous Ice Behavior. J Am Chem Soc 2011; 133:4882-8. [DOI: 10.1021/ja109610f] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniela Russo
- CNR-IOM c/o Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France
| | - José Teixeira
- Laboratoire Léon Brillouin (CEA/CNRS), CEA Saclay, 91191 Gif-sur Yvette Cedex, France
| | - Larry Kneller
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - John R. D. Copley
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Jacques Ollivier
- Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France
| | - Stefania Perticaroli
- Dipartimento di Chimica, Università degli Studi di Perugia, Sezione di Chimica Fisica, via Elce di sotto 8, I-06123 Perugia, Italia
| | - Eric Pellegrini
- Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France
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