1
|
Jonsson O, Lundell A, Rosell J, You S, Ahlgren K, Swenson J. Comparison of Sucrose and Trehalose for Protein Stabilization Using Differential Scanning Calorimetry. J Phys Chem B 2024; 128:4922-4930. [PMID: 38733344 DOI: 10.1021/acs.jpcb.4c00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2024]
Abstract
The disaccharide trehalose is generally acknowledged as a superior stabilizer of proteins and other biomolecules in aqueous environments. Despite many theories aiming to explain this, the stabilization mechanism is still far from being fully understood. This study compares the stabilizing properties of trehalose with those of the structurally similar disaccharide sucrose. The stability has been evaluated for the two proteins, lysozyme and myoglobin, at both low and high temperatures by determining the glass transition temperature, Tg, and the denaturation temperature, Tden. The results show that the sucrose-containing samples exhibit higher Tden than the corresponding trehalose-containing samples, particularly at low water contents. The better stabilizing effect of sucrose at high temperatures may be explained by the fact that sucrose, to a greater extent, binds directly to the protein surface compared to trehalose. Both sugars show Tden elevation with an increasing sugar-to-protein ratio, which allows for a more complete sugar shell around the protein molecules. Finally, no synergistic effects were found by combining trehalose and sucrose. Conclusively, the exact mechanism of protein stabilization may vary with the temperature, as influenced by temperature-dependent interactions between the protein, sugar, and water. This variability can make trehalose to a superior stabilizer under some conditions and sucrose under others.
Collapse
Affiliation(s)
- Olivia Jonsson
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| | - Agnes Lundell
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| | - John Rosell
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| | - Sophie You
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| | - Kajsa Ahlgren
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| | - Jan Swenson
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| |
Collapse
|
2
|
Nsairat H, Ibrahim AA, Jaber AM, Abdelghany S, Atwan R, Shalan N, Abdelnabi H, Odeh F, El-Tanani M, Alshaer W. Liposome bilayer stability: emphasis on cholesterol and its alternatives. J Liposome Res 2024; 34:178-202. [PMID: 37378553 DOI: 10.1080/08982104.2023.2226216] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/15/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023]
Abstract
Liposomes are spherical lipidic nanocarriers composed of natural or synthetic phospholipids with a hydrophobic bilayer and aqueous core, which are arranged into a polar head and a long hydrophobic tail, forming an amphipathic nano/micro-particle. Despite numerous liposomal applications, their use encounters many challenges related to the physicochemical properties strongly affected by their constituents, colloidal stability, and interactions with the biological environment. This review aims to provide a perspective and a clear idea about the main factors that regulate the liposomes' colloidal and bilayer stability, emphasising the roles of cholesterol and its possible alternatives. Moreover, this review will analyse strategies that offer possible approaches to provide more stable in vitro and in vivo liposomes with enhanced drug release and encapsulation efficiencies.
Collapse
Affiliation(s)
- Hamdi Nsairat
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
| | - Abed Alqader Ibrahim
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, NC, USA
| | - Areej M Jaber
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
| | | | - Randa Atwan
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
| | - Naeem Shalan
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
| | - Hiba Abdelnabi
- Faculty of Pharmacy, The University of Jordan, Amman, Jordan
- Cell Therapy Center, The University of Jordan, Amman, Jordan
| | - Fadwa Odeh
- Department of Chemistry, The University of Jordan, Amman, Jordan
| | - Mohamed El-Tanani
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
- Institute of Cancer Therapeutics, University of Bradford, Bradford, UK
| | - Walhan Alshaer
- Cell Therapy Center, The University of Jordan, Amman, Jordan
| |
Collapse
|
3
|
Guevara L, Gouge M, Ohler A, Hill SG, Patel S, Offenbacher AR. Effect of solvent viscosity on the activation barrier of hydrogen tunneling in the lipoxygenase reaction. Arch Biochem Biophys 2023; 747:109740. [PMID: 37678425 DOI: 10.1016/j.abb.2023.109740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/22/2023] [Accepted: 09/05/2023] [Indexed: 09/09/2023]
Abstract
Hydrogen tunneling in enzyme reactions has played an important role in linking protein thermal motions to the chemical steps of catalysis. Lipoxygenases (LOXs) have served as model systems for such reactions, showcasing deep hydrogen tunneling mechanisms associated with enzymatic C-H bond cleavage from polyunsaturated fatty acids. Here, we examined the effect of solvent viscosity on the protein thermal motions associated with LOX catalysis using trehalose and glucose as viscogens. Kinetic analysis of the reaction of the paradigm plant orthologue, soybean lipoxygenase (SLO), with linoleic acid revealed no effect on the first-order rate constants, kcat, or activation energy, Ea. Further studies of SLO active site mutants displaying varying Eas, which have been used to probe catalytically relevant motions, likewise provided no evidence for viscogen-dependent motions. Kinetic analyses were extended to a representative fungal LOX from M. oryzae, MoLOX, and a human LOX, 15-LOX-2. While MoLOX behaved similarly to SLO, we show that viscogens inhibit 15-LOX-2 activity. The latter implicates viscogen sensitive, conformational motions in animal LOX reactions. The data provide insight into the role of water hydration layers in facilitating hydrogen (quantum) tunneling in LOX.
Collapse
Affiliation(s)
- Luis Guevara
- Department of Chemistry, East Carolina University, Greenville, NC, 27858, USA
| | - Melissa Gouge
- Department of Chemistry and Biochemistry, Ohio Northern University, Ada, OH, 45810, USA
| | - Amanda Ohler
- Department of Chemistry, East Carolina University, Greenville, NC, 27858, USA
| | - S Gage Hill
- Department of Chemistry, East Carolina University, Greenville, NC, 27858, USA
| | - Soham Patel
- Department of Chemistry, East Carolina University, Greenville, NC, 27858, USA
| | - Adam R Offenbacher
- Department of Chemistry, East Carolina University, Greenville, NC, 27858, USA.
| |
Collapse
|
4
|
Ahlgren K, Olsson C, Ermilova I, Swenson J. New insights into the protein stabilizing effects of trehalose by comparing with sucrose. Phys Chem Chem Phys 2023; 25:21215-21226. [PMID: 37534799 DOI: 10.1039/d3cp02639f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Disaccharides are well known to be efficient stabilizers of proteins, for example in the case of lyophilization or cryopreservation. However, although all disaccharides seem to exhibit bioprotective and stabilizing properties, it is clear that trehalose is generally superior compared to other disaccharides. The aim of this study was to understand this by comparing how the structural and dynamical properties of aqueous trehalose and sucrose solutions influence the protein myoglobin (Mb). The structural studies were based on neutron and X-ray diffraction in combination with empirical potential structure refinement (EPSR) modeling, whereas the dynamical studies were based on quasielastic neutron scattering (QENS) and molecular dynamics (MD) simulations. The results show that the overall differences in the structure and dynamics of the two systems are small, but nevertheless there are some important differences which may explain the superior stabilizing effects of trehalose. It was found that in both systems the protein is preferentially hydrated by water, but that this effect is more pronounced for trehalose, i.e. trehalose forms less hydrogen bonds to the protein surface than sucrose. Furthermore, the rotational motion around dihedrals between the two glucose rings of trehalose is slower than in the case of the dihedrals between the glucose and fructose rings of sucrose. This leads to a less perturbed protein structure in the case of trehalose. The observations indicate that an aqueous environment closest to the protein molecules is beneficial for an efficient bioprotective solution.
Collapse
Affiliation(s)
- Kajsa Ahlgren
- Division of Nano-Biophysics, Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden.
| | - Christoffer Olsson
- Division of Biomedical imaging, Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Stockholm SE-114 28, Sweden
| | - Inna Ermilova
- Division of Nano-Biophysics, Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden.
| | - Jan Swenson
- Division of Nano-Biophysics, Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden.
| |
Collapse
|
5
|
Miao H, Huang K, Li Y, Li R, Zhou X, Shi J, Tong Z, Sun Z, Yu A. Optimization of formulation and atomization of lipid nanoparticles for the inhalation of mRNA. Int J Pharm 2023; 640:123050. [PMID: 37201764 DOI: 10.1016/j.ijpharm.2023.123050] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/06/2023] [Accepted: 05/11/2023] [Indexed: 05/20/2023]
Abstract
Lipid nanoparticles (LNPs) have demonstrated efficacy and safety for mRNA vaccine administration by intramuscular injection; however, the pulmonary delivery of mRNA encapsulated LNPs remains challenging. The atomization process of LNPs will cause shear stress due to dispersed air, air jets, ultrasonication, vibrating mesh etc., leading to the agglomeration or leakage of LNPs, which can be detrimental to transcellular transport and endosomal escape. In this study, the LNP formulation, atomization methods and buffer system were optimized to maintain the LNP stability and mRNA efficiency during the atomization process. Firstly, a suitable LNP formulation for atomization was optimized based on the in vitro results, and the optimized LNP formulation was AX4, DSPC, cholesterol and DMG-PEG2K at a 35/16/46.5/2.5 (%) molar ratio. Subsequently, different atomization methods were compared to find the most suitable method to deliver mRNA-LNP solution. Soft mist inhaler (SMI) was found to be the best for pulmonary delivery of mRNA encapsulated LNPs. The physico-chemical properties such as size and entrapment efficiency (EE) of the LNPs were further improved by adjusting the buffer system with trehalose. Lastly, the in vivo fluorescence imaging of mice demonstrated that SMI with proper LNPs design and buffer system hold promise for inhaled mRNA-LNP therapies.
Collapse
Affiliation(s)
- Hao Miao
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia; Monash Suzhou Research Institute, Suzhou, 215000, China
| | - Ke Huang
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia; Monash Suzhou Research Institute, Suzhou, 215000, China
| | - Yingwen Li
- Suzhou CureMed Biopharma Technology Co., Ltd., Suzhou, 215000, China
| | - Renjie Li
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia; Monash Suzhou Research Institute, Suzhou, 215000, China
| | - Xudong Zhou
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia; Monash Suzhou Research Institute, Suzhou, 215000, China
| | - Jingyu Shi
- School of Energy and Environment, Southeast University, Nanjing, 210000, China; Southeast University-Monash University Joint Research Institute, Suzhou, 215000 China
| | - Zhenbo Tong
- School of Energy and Environment, Southeast University, Nanjing, 210000, China; Southeast University-Monash University Joint Research Institute, Suzhou, 215000 China
| | - Zhenhua Sun
- Suzhou CureMed Biopharma Technology Co., Ltd., Suzhou, 215000, China.
| | - Aibing Yu
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia; Southeast University-Monash University Joint Research Institute, Suzhou, 215000 China
| |
Collapse
|
6
|
Malomuzh NP. Shear Viscosity and Self-Diffusion in Water. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422070226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
7
|
Meena P, Kishore N. Ionic strength modulated interactions of sorbitol with lysozyme and amino acids: Quantitative understanding in protein stabilizing effects. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
8
|
Olsson C, Zangana R, Swenson J. Stabilization of proteins embedded in sugars and water as studied by dielectric spectroscopy. Phys Chem Chem Phys 2021; 22:21197-21207. [PMID: 32930314 DOI: 10.1039/d0cp03281f] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In many products proteins have become an important component, and the long-term properties of these products are directly dependent on the stability of their proteins. To enhance this stability it has become common to add disaccharides in general, and trehalose in particular. However, the mechanisms by which disaccharides stabilize proteins and other biological materials are still not fully understood, and therefore we have here used broadband dielectric spectroscopy to investigate the stabilizing effect of the disaccharides trehalose and sucrose on myoglobin, with the aim to enhance this understanding in general and to obtain specific insights into why trehalose exhibits extraordinary stabilizing properties. The results show the existence of three or four clearly observed relaxation processes, where the three common relaxations are the local (β) water relaxation below the glass transition temperature (Tg), the structural α-relaxation of the solvent, observed above Tg, and an even slower protein relaxation due to large-scale conformational protein motions. For the trehalose containing samples with less than 50 wt% myoglobin a fourth relaxation process was observed due to a β-relaxation of trehalose below Tg. This latter process, which was assigned to intramolecular rotations of the monosaccharide rings in trehalose, could not be detected for high protein concentrations or for the sucrose containing samples. Since sucrose has previously been found to form more intramolecular hydrogen bonds at the present hydration levels, it is likely that this rotation becomes too slow to be observed in the case of sucrose. However, this sugar relaxation has probably less influence on the protein stability below Tg, where the better stabilizing effect of trehalose on proteins can be explained by our observation that trehalose slows down the water relaxation more than sucrose does. Finally, we show that the α-relaxation of the solvent and the large-scale protein motions exhibit similar temperature dependences, which suggests that these protein motions are slaved by the α-relaxation. Furthermore, the α-relaxation of the trehalose solution is slower than for the corresponding sucrose solution, and thereby also the protein motions become slower in the trehalose solution, which explains the more efficient stabilizing effect of trehalose on proteins above Tg.
Collapse
Affiliation(s)
- Christoffer Olsson
- Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
| | - Rano Zangana
- Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
| | - Jan Swenson
- Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
| |
Collapse
|
9
|
Atamas N, Bakumenko M. Dynamics of nonpolar molecules in dimethyl-imidazolium chloride. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
10
|
Arsiccio A, Ganguly P, La Cortiglia L, Shea JE, Pisano R. ADD Force Field for Sugars and Polyols: Predicting the Additivity of Protein-Osmolyte Interaction. J Phys Chem B 2020; 124:7779-7790. [PMID: 32790371 PMCID: PMC7901642 DOI: 10.1021/acs.jpcb.0c05345] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
![]()
The protein–osmolyte interaction has been shown experimentally to follow an
additive construct, where the individual osmolyte–backbone and
osmolyte–side-chain interactions contribute to the overall conformational
stability of proteins. Here, we computationally reconstruct this additive relation using
molecular dynamics simulations, focusing on sugars and polyols, including sucrose and
sorbitol, as model osmolytes. A new set of parameters (ADD) is developed for this
purpose, using the individual Kirkwood–Buff integrals for sugar–backbone
and sugar–side-chain interactions as target experimental data. We show that the
ADD parameters can reproduce the additivity of protein–sugar interactions and
correctly predict sucrose and sorbitol self-association and their interaction with
water. The accurate description of the separate osmolyte–backbone and
osmolyte–side-chain contributions also automatically translates into a good
prediction of preferential exclusion from the surface of ribonuclease A and
α-chymotrypsinogen A. The description of sugar polarity is improved compared to
previous force fields, resulting in closer agreement with the experimental data and
better compatibility with charged groups, such as the guanidinium moiety. The ADD
parameters are developed in combination with the CHARMM36m force field for proteins, but
good compatibility is also observed with the AMBER 99SB-ILDN and the OPLS-AA force
fields. Overall, exploiting the additivity of protein–osmolyte interactions is a
promising approach for the development of new force fields.
Collapse
Affiliation(s)
- Andrea Arsiccio
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Pritam Ganguly
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Lorenzo La Cortiglia
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, Torino 10129, Italy
| | - Joan-Emma Shea
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States.,Department of Physics, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Roberto Pisano
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, Torino 10129, Italy
| |
Collapse
|
11
|
The crucial role of water in the formation of the physiological temperature range for warm-blooded organisms. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112818] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Abstract
![]()
The
two sugar molecules sucrose and trehalose are both considered
as stabilizing molecules for the purpose of preserving biological
materials during, for example, lyophilization or cryo-preservation.
Although these molecules share a similar molecular structure, there
are several important differences in their properties when they interact
with water, such as differences in solubility, viscosity, and glass
transition temperature. In general, trehalose has been shown to be
more efficient than other sugar molecules in preserving different
biological molecules against stress, and thus by investigating how
these two disaccharides differ in their water interaction, it is possible
to further understand what makes trehalose special in its stabilizing
properties. For this purpose, the structure of aqueous solutions of
these disaccharides was studied by using neutron and X-ray diffraction
in combination with empirical potential structure refinement (EPSR)
modeling. The results show that there are surprisingly few differences
in the overall structure of the solutions, although there are indications
for that trehalose perturbs the water structure slightly more than
sucrose.
Collapse
Affiliation(s)
- Christoffer Olsson
- Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Jan Swenson
- Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| |
Collapse
|
13
|
Self-assembly Processes in Hydrated Montmorillonite by FTIR Investigations. MATERIALS 2020; 13:ma13051100. [PMID: 32121630 PMCID: PMC7084999 DOI: 10.3390/ma13051100] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/21/2020] [Accepted: 02/27/2020] [Indexed: 11/17/2022]
Abstract
Experimental findings obtained by FTIR and Raman spectroscopies on montmorillonite-water mixtures at three concentration values are presented. To get some insight into the hydrogen bond network of water within the montmorillonite network, FTIR and Raman spectra have been collected as a function of time and then analyzed following two complementary approaches: An analysis of the intramolecular OH stretching mode in the spectral range of 2700–3900 cm−1 in terms of two Gaussian components, and an analysis of the same OH stretching mode by wavelet cross-correlation. The FTIR and Raman investigations have been carried as a function of time for a montmorillonite-water weight composition (wt%) of 20–80%, 25–75%, and 35–65%, until the dehydrated state where the samples appear as a homogeneous rigid layer of clay. In particular, for both the FTIR and Raman spectra, the decomposition of the OH stretching band into a “closed” and an “open” contribution and the spectral wavelet analysis allow us to extract quantitative information on the time behavior of the system water content. It emerges that, the total water contribution inside the montmorillonite structure decreases as a function of time. However, the relative weight of the ordered water contribution diminishes more rapidly while the relative weight of the disordered water contribution increases, indicating that a residual water content, characterized by a highly structural disorder, rests entrapped in the montmorillonite layer structure for a longer time. From the present study, it can be inferred that the montmorillonite dehydration process promotes the layer self-assembly.
Collapse
|
14
|
Affiliation(s)
- Christoffer Olsson
- Department of Physics, Chalmers University of Technology, Göteborg, Sweden
| | - Jan Swenson
- Department of Physics, Chalmers University of Technology, Göteborg, Sweden
| |
Collapse
|
15
|
Olsson C, Genheden S, García Sakai V, Swenson J. Mechanism of Trehalose-Induced Protein Stabilization from Neutron Scattering and Modeling. J Phys Chem B 2019; 123:3679-3687. [PMID: 30964287 DOI: 10.1021/acs.jpcb.9b01856] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The sugar molecule trehalose has been proven to be an excellent stabilizing cosolute for the preservation of biological materials. However, the stabilizing mechanism of trehalose has been much debated during the previous decades, and it is still not fully understood, partly because it has not been completely established how trehalose molecules structure around proteins. Here, we present a molecular model of a protein-water-trehalose system, based on neutron scattering results obtained from neutron diffraction, quasielastic neutron scattering, and different computer modeling techniques. The structural data clearly show how the proteins are preferentially hydrated, and analysis of the dynamical properties show that the protein residues are slowed down because of reduced dynamics of the protein hydration shell, rather than because of direct trehalose-protein interactions. These findings, thereby, strongly support previous models related to the preferential hydration model and contradict other models based on water replacement at the protein surface. Furthermore, the results are important for understanding the specific role of trehalose in biological stabilization and, more generally, for providing a likely mechanism of how cosolutes affect the dynamics of proteins.
Collapse
Affiliation(s)
- Christoffer Olsson
- Department of Physics , Chalmers University of Technology , SE-412 96 Göteborg , Sweden
| | - Samuel Genheden
- Deparment of Chemistry and Molecular Biology , University of Gothenburg , Box 462, SE-405 30 Göteborg , Sweden
| | - Victoria García Sakai
- ISIS Facility, STFC Rutherford Appleton Laboratory , Harwell Campus , Didcot , OX11 0QX Oxfordshire , U.K
| | - Jan Swenson
- Department of Physics , Chalmers University of Technology , SE-412 96 Göteborg , Sweden
| |
Collapse
|
16
|
Abdelmoulahi H, Trabelsi S, Nasr S, Bellissent-Funel MC. Hydrogen-bond network in liquid Formamide Methanol mixture as studied by neutron scattering and density functional theory. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
17
|
Katyal N, Agarwal M, Sen R, Kumar V, Deep S. Paradoxical Effect of Trehalose on the Aggregation of α-Synuclein: Expedites Onset of Aggregation yet Reduces Fibril Load. ACS Chem Neurosci 2018; 9:1477-1491. [PMID: 29601727 DOI: 10.1021/acschemneuro.8b00056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Aggregation of α-synuclein is closely connected to the pathology of Parkinson's disease. The phenomenon involves multiple steps, commenced by partial misfolding and eventually leading to mature amyloid fibril formation. Trehalose, a widely accepted osmolyte, has been shown previously to inhibit aggregation of various globular proteins owing to its ability to prevent the initial unfolding of protein. In this study, we have examined if it behaves in a similar fashion with intrinsically disordered protein α-synuclein and possesses the potential to act as therapeutic agent against Parkinson's disease. It was observed experimentally that samples coincubated with trehalose fibrillate faster compared to the case in its absence. Molecular dynamics simulations suggested that this initial acceleration is manifestation of trehalose's tendency to perturb the conformational transitions between different conformers of monomeric protein. It stabilizes the aggregation prone "extended" conformer of α-synuclein, by binding to its exposed acidic residues of the C terminus. It also favors the β-rich oligomers once formed. Interestingly, the total fibrils formed are still promisingly less since it accelerates the competing pathway toward formation of amorphous aggregates.
Collapse
Affiliation(s)
- Nidhi Katyal
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz-Khas, New Delhi 110016, India
| | - Manish Agarwal
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz-Khas, New Delhi 110016, India
| | - Raktim Sen
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz-Khas, New Delhi 110016, India
| | - Vinay Kumar
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz-Khas, New Delhi 110016, India
| | - Shashank Deep
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz-Khas, New Delhi 110016, India
| |
Collapse
|
18
|
Katyal N, Deep S. Inhibition of GNNQQNY prion peptide aggregation by trehalose: a mechanistic view. Phys Chem Chem Phys 2018; 19:19120-19138. [PMID: 28702592 DOI: 10.1039/c7cp02912h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Deposition of amyloid fibrils is the seminal event in the pathogenesis of numerous neurodegenerative diseases. The formation of this amyloid assembly is the manifestation of a cascade of structural transitions including toxic oligomer formation in the early stages of aggregation. Thus a viable therapeutic strategy involves the use of small molecular ligands to interfere with this assembly. In this perspective, we have explored the kinetics of aggregate formation of the fibril forming GNNQQNY peptide fragment from the yeast prion protein SUP35 using multiple all atom MD simulations with explicit solvent and provided mechanistic insights into the way trehalose, an experimentally known aggregation inhibitor, modulates the aggregation pathway. The results suggest that the assimilation process is impeded by different barriers at smaller and larger oligomeric sizes: the initial one being easily surpassed at higher temperatures and peptide concentrations. The kinetic profile demonstrates that trehalose delays the aggregation process by increasing both these activation barriers, specifically the latter one. It increases the sampling of small-sized aggregates that lack the beta sheet conformation. Analysis reveals that the barrier in the growth of larger stable oligomers causes the formation of multiple stable small oligomers which then fuse together bimolecularly. The PCA of 26 properties was carried out to deconvolute the events within the temporary lag phases, which suggested dynamism in lags involving an increase in interchain contacts and burial of SASA. The predominant growth route is monomer addition, which changes to condensation on account of a large number of depolymerisation events in the presence of trehalose. The favourable interaction of trehalose specifically with the sidechain of the peptide promotes crowding of trehalose molecules in its vicinity - the combination of both these factors imparts the observed behaviour. Furthermore, increasing trehalose concentration leads to faster expulsion of water molecules than interpeptide interactions. These expelled water molecules have larger translational movement, suggesting an entropy factor to favor the assembly process. Different conformations observed under this condition suggest the role of water molecules in guiding the morphology of the aggregates as well. A similar scenario exists on increasing peptide concentration.
Collapse
Affiliation(s)
- Nidhi Katyal
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauzkhas, New Delhi, India.
| | - Shashank Deep
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauzkhas, New Delhi, India.
| |
Collapse
|
19
|
Penkov N, Yashin V, Fesenko E, Manokhin A, Fesenko E. A Study of the Effect of a Protein on the Structure of Water in Solution Using Terahertz Time-Domain Spectroscopy. APPLIED SPECTROSCOPY 2018; 72:257-267. [PMID: 28922934 DOI: 10.1177/0003702817735551] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Terahertz time-domain spectroscopy (THz-TDS) was used to determine the spectra (range = 1.2-120 cm-1) of aqueous solutions of bovine serum albumin (BSA) at pH range 2.5-10. Under each of the selected pH, BSA molecules exist in a different conformation, compared to other pH values. The spectra were used to calculate the functions of the dielectric permittivity of BSA solutions. Dielectric functions of the aqueous phase of BSA solutions were calculated based on the Bruggeman model, without the contribution of BSA itself. Fitting of the dielectric functions was performed using a model which includes three water spectral bands: two relaxation bands with relaxation times of about 8.28 and 0.3 ps and a vibrational band with a maximum of about 180 cm-1. The parameters of these bands were determined through fitting and physical interpretation at the molecular level can be provided for each of them. A comparison between the values of model parameters of solutions with BSA and without BSA allowed to conclude that the main effect of BSA is the formation of strongly bound hydration shells in the immediate proximity to the protein molecule. At the same time, the structure of more distant layers of the hydration shells is destroyed, with an increased formation of free water molecules. Some differences are observed in the effect of different BSA conformations on the aqueous phase of solution. The proposed approach can be generalized and applied for studying of a wide class of biological macromolecules in aqueous solutions.
Collapse
Affiliation(s)
- Nikita Penkov
- 104705 Institute of Cell Biophysics of Russian Academy of Sciences, Moscow, Russia
| | - Valery Yashin
- 104705 Institute of Cell Biophysics of Russian Academy of Sciences, Moscow, Russia
| | - Eugeny Fesenko
- 104705 Institute of Cell Biophysics of Russian Academy of Sciences, Moscow, Russia
| | - Andrew Manokhin
- 104705 Institute of Cell Biophysics of Russian Academy of Sciences, Moscow, Russia
| | - Eugeny Fesenko
- 104705 Institute of Cell Biophysics of Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
20
|
Singh SK. Sucrose and Trehalose in Therapeutic Protein Formulations. CHALLENGES IN PROTEIN PRODUCT DEVELOPMENT 2018. [DOI: 10.1007/978-3-319-90603-4_3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
21
|
Atamas N, Bardik V, Bannikova A, Grishina O, Lugovskoi E, Lavoryk S, Makogonenko Y, Korolovych V, Nerukh D, Paschenko V. The effect of water dynamics on conformation changes of albumin in pre-denaturation state: photon correlation spectroscopy and simulation. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
22
|
Olsson C, Jansson H, Youngs T, Swenson J. Structure of Aqueous Trehalose Solution by Neutron Diffraction and Structural Modeling. J Phys Chem B 2016; 120:12669-12678. [DOI: 10.1021/acs.jpcb.6b10556] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Tristan Youngs
- ISIS
Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Oxon, OX11 0QX, Oxfordshire, U.K
| | | |
Collapse
|
23
|
Soft Interaction in Liposome Nanocarriers for Therapeutic Drug Delivery. NANOMATERIALS 2016; 6:nano6070125. [PMID: 28335253 PMCID: PMC5224599 DOI: 10.3390/nano6070125] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/14/2016] [Accepted: 06/17/2016] [Indexed: 01/19/2023]
Abstract
The development of smart nanocarriers for the delivery of therapeutic drugs has experienced considerable expansion in recent decades, with the development of new medicines devoted to cancer treatment. In this respect a wide range of strategies can be developed by employing liposome nanocarriers with desired physico-chemical properties that, by exploiting a combination of a number of suitable soft interactions, can facilitate the transit through the biological barriers from the point of administration up to the site of drug action. As a result, the materials engineer has generated through the bottom up approach a variety of supramolecular nanocarriers for the encapsulation and controlled delivery of therapeutics which have revealed beneficial developments for stabilizing drug compounds, overcoming impediments to cellular and tissue uptake, and improving biodistribution of therapeutic compounds to target sites. Herein we present recent advances in liposome drug delivery by analyzing the main structural features of liposome nanocarriers which strongly influence their interaction in solution. More specifically, we will focus on the analysis of the relevant soft interactions involved in drug delivery processes which are responsible of main behaviour of soft nanocarriers in complex physiological fluids. Investigation of the interaction between liposomes at the molecular level can be considered an important platform for the modeling of the molecular recognition processes occurring between cells. Some relevant strategies to overcome the biological barriers during the drug delivery of the nanocarriers are presented which outline the main structure-properties relationships as well as their advantages (and drawbacks) in therapeutic and biomedical applications.
Collapse
|
24
|
Neri L, Di Biase L, Sacchetti G, Di Mattia C, Santarelli V, Mastrocola D, Pittia P. Use of vacuum impregnation for the production of high quality fresh-like apple products. J FOOD ENG 2016. [DOI: 10.1016/j.jfoodeng.2016.02.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
25
|
Marchese N, Cannuli A, Caccamo MT, Pace C. New generation non-stationary portable neutron generators for biophysical applications of Neutron Activation Analysis. Biochim Biophys Acta Gen Subj 2016; 1861:3661-3670. [PMID: 27212689 DOI: 10.1016/j.bbagen.2016.05.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/12/2016] [Accepted: 05/15/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Neutron sources are increasingly employed in a wide range of research fields. For some specific purposes an alternative to existing large-scale neutron scattering facilities, can be offered by the new generation of portable neutron devices. SCOPE OF REVIEW This review reports an overview for such recently available neutron generators mainly addressed to biophysics applications with specific reference to portable non-stationary neutron generators applied in Neutron Activation Analysis (NAA). MAJOR CONCLUSIONS The review reports a description of a typical portable neutron generator set-up addressed to biophysics applications. GENERAL SIGNIFICANCE New generation portable neutron devices, for some specific applications, can constitute an alternative to existing large-scale neutron scattering facilities. Deuterium-Deuterium pulsed neutron sources able to generate 2.5MeV neutrons, with a neutron yield of 1.0×106n/s, a pulse rate of 250Hz to 20kHz and a duty factor varying from 5% to 100%, when combined with solid-state photon detectors, show that this kind of compact devices allow rapid and user-friendly elemental analysis. "This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo".
Collapse
Affiliation(s)
- N Marchese
- DIMES Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica, Università della Calabria, Via P. Bucci, Arcavacata di Rende, Cosenza, Italy
| | - A Cannuli
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F. Stagno D'Alcontres, S. Agata, Messina, Italy
| | - M T Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F. Stagno D'Alcontres, S. Agata, Messina, Italy
| | - C Pace
- DIMES Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica, Università della Calabria, Via P. Bucci, Arcavacata di Rende, Cosenza, Italy
| |
Collapse
|
26
|
Olsson C, Jansson H, Swenson J. The Role of Trehalose for the Stabilization of Proteins. J Phys Chem B 2016; 120:4723-31. [DOI: 10.1021/acs.jpcb.6b02517] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoffer Olsson
- Department
of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Helén Jansson
- Department
of Civil and Environmental Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Jan Swenson
- Department
of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| |
Collapse
|
27
|
Ngai KL, Capaccioli S, Paciaroni A. Dynamics of hydrated proteins and bio-protectants: Caged dynamics, β-relaxation, and α-relaxation. Biochim Biophys Acta Gen Subj 2016; 1861:3553-3563. [PMID: 27155356 DOI: 10.1016/j.bbagen.2016.04.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/26/2016] [Accepted: 04/27/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND The properties of the three dynamic processes, α-relaxation, ν-relaxation, and caged dynamics in aqueous mixtures and hydrated proteins are analogous to corresponding processes found in van der Waals and polymeric glass-formers apart from minor differences. METHODS Collection of various experimental data enables us to characterize the structural α-relaxation of the protein coupled to hydration water (HW), the secondary or ν-relaxation of HW, and the caged HW process. RESULTS From the T-dependence of the ν-relaxation time of hydrated myoglobin, lysozyme, and bovine serum albumin, we obtain Ton at which it enters the experimental time windows of Mössbauer and neutron scattering spectroscopies, coinciding with protein dynamical transition (PDT) temperature Td. However, for all systems considered, the α-relaxation time at Ton or Td is many orders of magnitude longer. The other step change of the mean-square-displacement (MSD) at Tg_alpha originates from the coupling of the nearly constant loss (NCL) of caged HW to density. The coupling of the NCL to density is further demonstrated by another step change at the secondary glass temperature Tg_beta in two bio-protectants, trehalose and sucrose. CONCLUSIONS The structural α-relaxation plays no role in PDT. Since PDT is simply due to the ν-relaxation of HW, the term PDT is a misnomer. NCL of caged dynamics is coupled to density and show transitions at lower temperature, Tg_beta and Tg_alpha. GENERAL SIGNIFICANCE The so-called protein dynamical transition (PDT) of hydrated proteins is not caused by the structural α-relaxation of the protein but by the secondary ν-relaxation of hydration water. "This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo".
Collapse
Affiliation(s)
- K L Ngai
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy.
| | - S Capaccioli
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy; Dipartimento di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
| | - A Paciaroni
- Dipartimento di Fisica, Università degli Studi di Perugia, Via A Pascoli 1, 06123 Perugia, Italy
| |
Collapse
|
28
|
Kiselev MA, Lombardo D. Structural characterization in mixed lipid membrane systems by neutron and X-ray scattering. Biochim Biophys Acta Gen Subj 2016; 1861:3700-3717. [PMID: 27138452 DOI: 10.1016/j.bbagen.2016.04.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 01/13/2023]
Abstract
Lipids membranes, the primary component of the living cell, involve collective behaviour of numerous interacting molecules. The rich morphology and complex phase diagram of the lipid systems require different strategies in describing bio-membranes in order to capture the essential properties of self-assembly processes as well as the underling molecular collective phenomena involved in biological functions. Among the experimental methods used, the scattering techniques such as small angle neutrons and X-rays scattering (SANS and SAXS) are probably the most important experimental approaches for the structural investigation of bio-membranes and mixed lipids complex systems. In this tutorial review we describe the main approaches employed in the investigation of lipid bio-membranes by means of the neutron and x-ray scattering techniques. While introducing the main structural properties of lipid bio-membranes we highlight the important role of lipid components in different biological functions of living organisms. This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo.
Collapse
Affiliation(s)
- Mikhail A Kiselev
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Ulica Joliot-Curie 6, Dubna, Moscow 141980, Russia
| | - Domenico Lombardo
- CNR-IPCF, Consiglio Nazionale delle Ricerche. Istituto per i Processi Chimico Fisici, Viale F.S. D'Alcontres, No. 37, 98158 Messina, Italy.
| |
Collapse
|
29
|
Ferreira LA, Breydo L, Reichardt C, Uversky VN, Zaslavsky BY. Effects of osmolytes on solvent features of water in aqueous solutions. J Biomol Struct Dyn 2016; 35:1055-1068. [DOI: 10.1080/07391102.2016.1170633] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Luisa A. Ferreira
- Cleveland Diagnostics , 3615 Superior Ave., Suite 4407B, Cleveland, OH 44114, USA
| | - Leonid Breydo
- Department of Molecular Medicine and Byrd Alzheimer’s Research Institute, Morsani College of Medicine, University of South Florida , Tampa, FL 33612, USA
| | | | - Vladimir N. Uversky
- Department of Molecular Medicine and Byrd Alzheimer’s Research Institute, Morsani College of Medicine, University of South Florida , Tampa, FL 33612, USA
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences , St. Petersburg, Russia
| | - Boris Y. Zaslavsky
- Cleveland Diagnostics , 3615 Superior Ave., Suite 4407B, Cleveland, OH 44114, USA
| |
Collapse
|
30
|
Tien NT, Karaca I, Tamboli IY, Walter J. Trehalose Alters Subcellular Trafficking and the Metabolism of the Alzheimer-associated Amyloid Precursor Protein. J Biol Chem 2016; 291:10528-40. [PMID: 26957541 DOI: 10.1074/jbc.m116.719286] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Indexed: 01/28/2023] Open
Abstract
The disaccharide trehalose is commonly considered to stimulate autophagy. Cell treatment with trehalose could decrease cytosolic aggregates of potentially pathogenic proteins, including mutant huntingtin, α-synuclein, and phosphorylated tau that are associated with neurodegenerative diseases. Here, we demonstrate that trehalose also alters the metabolism of the Alzheimer disease-related amyloid precursor protein (APP). Cell treatment with trehalose decreased the degradation of full-length APP and its C-terminal fragments. Trehalose also reduced the secretion of the amyloid-β peptide. Biochemical and cell biological experiments revealed that trehalose alters the subcellular distribution and decreases the degradation of APP C-terminal fragments in endolysosomal compartments. Trehalose also led to strong accumulation of the autophagic marker proteins LC3-II and p62, and decreased the proteolytic activation of the lysosomal hydrolase cathepsin D. The combined data indicate that trehalose decreases the lysosomal metabolism of APP by altering its endocytic vesicular transport.
Collapse
Affiliation(s)
- Nguyen T Tien
- From the Department of Neurology, University of Bonn, 53127 Bonn, Germany
| | - Ilker Karaca
- From the Department of Neurology, University of Bonn, 53127 Bonn, Germany
| | - Irfan Y Tamboli
- From the Department of Neurology, University of Bonn, 53127 Bonn, Germany
| | - Jochen Walter
- From the Department of Neurology, University of Bonn, 53127 Bonn, Germany
| |
Collapse
|
31
|
Ferreira LA, Madeira PP, Uversky VN, Zaslavsky BY. Analyzing the effects of protecting osmolytes on solute–water interactions by solvatochromic comparison method: I. Small organic compounds. RSC Adv 2015. [DOI: 10.1039/c5ra08610h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Solvent properties of water in aqueous solutions of osmolytes (sorbitol, sucrose, trehalose, and trimethylamine N-oxide (TMAO)) were studied at different concentrations using the solvatochromic comparison method.
Collapse
Affiliation(s)
| | - Pedro P. Madeira
- Laboratory of Separation and Reaction Engineering
- Department of Chemical Engineering
- Faculty of Engineering of the University of Porto
- Rua Dr. Roberto Frias
- Porto
| | - Vladimir N. Uversky
- Department of Molecular Medicine
- Morsani College of Medicine
- University of South Florida
- Tampa
- USA
| | | |
Collapse
|
32
|
Ferreira LA, Fan X, Madeira PP, Kurgan L, Uversky VN, Zaslavsky BY. Analyzing the effects of protecting osmolytes on solute–water interactions by solvatochromic comparison method: II. Globular proteins. RSC Adv 2015. [DOI: 10.1039/c5ra08612d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Partitioning of 11 globular proteins was examined in aqueous dextran–PEG–sodium/potassium phosphate buffer (0.01 M K/NaPB, pH 7.4) two-phase systems (ATPSs) containing 0.5 M sorbitol.
Collapse
Affiliation(s)
| | - Xiao Fan
- Department of Electrical and Computer Engineering
- University of Alberta
- Canada
| | - Pedro P. Madeira
- Laboratory of Separation and Reaction Engineering
- Department of Chemical Engineering
- Faculty of Engineering of the University of Porto
- Porto
- Portugal
| | - Lukasz Kurgan
- Department of Electrical and Computer Engineering
- University of Alberta
- Canada
| | - Vladimir N. Uversky
- Department of Molecular Medicine
- Morsani College of Medicine
- University of South Florida
- Tampa
- USA
| | | |
Collapse
|
33
|
Migliardo F, Tallima H, El Ridi R. Is there a sphingomyelin-based hydrogen bond barrier at the mammalian host-schistosome parasite interface? Cell Biochem Biophys 2014; 68:359-67. [PMID: 23943053 DOI: 10.1007/s12013-013-9716-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Schistosomes develop, mature, copulate, lay eggs, and live for years in the mammalian host bloodstream, importing nutrients across the tegument, but entirely impervious to the surrounding elements of the immune system. We have hypothesized that sphingomyelin (SM) in the parasite apical lipid bilayer is responsible for these sieving properties via formation of a tight hydrogen bond network with the surrounding water. Here we have used quasi-elastic neutron scattering for characterizing the diffusion of larval and adult Schistosoma mansoni and adult Schistosoma haematobium in the surrounding medium, under various environmental conditions. The results documented the presence of a hydrogen bond barrier around larvae and adult schistosomes. The hydrogen bond network readily collapses if worms are subjected to hypoxic conditions, likely via activation of the parasite tegument-associated neutral sphingomyelinase, and consequent excessive SM hydrolysis. The slower dynamics of lung-stage larvae as compared to adult worms has been related to the existence of hydrogen-bonded networks of different strength and then to their differential resistance to immune attacks.
Collapse
Affiliation(s)
- Federica Migliardo
- Department of Physics and Earth Sciences, University of Messina, Messina, 98166, Italy,
| | | | | |
Collapse
|
34
|
Migliardo F, Salmeron C, Bayan N. Mobility and temperature resistance of trehalose mycolates as key characteristics of the outer membrane ofMycobacterium tuberculosis. J Biomol Struct Dyn 2014; 33:447-59. [DOI: 10.1080/07391102.2014.887032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
35
|
Barreca D, Laganà G, Magazù S, Migliardo F, Gattuso G, Bellocco E. FTIR, ESI-MS, VT-NMR and SANS study of trehalose thermal stabilization of lysozyme. Int J Biol Macromol 2014; 63:225-32. [DOI: 10.1016/j.ijbiomac.2013.11.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/20/2013] [Accepted: 11/23/2013] [Indexed: 10/25/2022]
|
36
|
Migliardo F, Caccamo MT, Magazù S. Thermal Analysis on Bioprotectant Disaccharides by Elastic Incoherent Neutron Scattering. FOOD BIOPHYS 2013. [DOI: 10.1007/s11483-013-9322-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Migliardo F, Salmeron C, Bayan N. A neutron scattering study on the stability of trehalose mycolates under thermal stress. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2012.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
38
|
|
39
|
Zhao J, Wang S, Bao J, Sun X, Zhang X, Zhang X, Ye D, Wei J, Liu C, Jiang X, Shen G, Zhang Z. Trehalose maintains bioactivity and promotes sustained release of BMP-2 from lyophilized CDHA scaffolds for enhanced osteogenesis in vitro and in vivo. PLoS One 2013; 8:e54645. [PMID: 23359400 PMCID: PMC3554655 DOI: 10.1371/journal.pone.0054645] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 12/13/2012] [Indexed: 01/06/2023] Open
Abstract
Calcium phosphate (Ca-P) scaffolds have been widely employed as a supportive matrix and delivery system for bone tissue engineering. Previous studies using osteoinductive growth factors loaded Ca-P scaffolds via passive adsorption often experience issues associated with easy inactivation and uncontrolled release. In present study, a new delivery system was fabricated using bone morphogenetic protein-2 (BMP-2) loaded calcium-deficient hydroxyapatite (CDHA) scaffold by lyophilization with addition of trehalose. The in vitro osteogenesis effects of this formulation were compared with lyophilized BMP-2/CDHA construct without trehalose and absorbed BMP-2/CDHA constructs with or without trehalose. The release characteristics and alkaline phosphatase (ALP) activity analyses showed that addition of trehalose could sufficiently protect BMP-2 bioactivity during lyophilization and achieve sustained BMP-2 release from lyophilized CDHA construct in vitro and in vivo. However, absorbed BMP-2/CDHA constructs with or without trehalose showed similar BMP-2 bioactivity and presented a burst release. Quantitative real-time PCR (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA) demonstrated that lyophilized BMP-2/CDHA construct with trehalose (lyo-tre-BMP-2) promoted osteogenic differentiation of bone marrow stromal cells (bMSCs) significantly and this formulation could preserve over 70% protein bioactivity after 5 weeks storage at 25°C. Micro-computed tomography, histological and fluorescent labeling analyses further demonstrated that lyo-tre-BMP-2 formulation combined with bMSCs led to the most percentage of new bone volume (38.79% ± 5.32%) and area (40.71% ± 7.14%) as well as the most percentage of fluorochrome stained bone area (alizarin red S: 2.64% ± 0.44%, calcein: 6.08% ± 1.37%) and mineral apposition rate (4.13 ± 0.62 µm/day) in critical-sized rat cranial defects healing. Biomechanical tests also indicated the maximum stiffness (118.17 ± 15.02 Mpa) and load of fracture (144.67 ± 16.13 N). These results lay a potential framework for future study by using trehalose to preserve growth factor bioactivity and optimize release profile of Ca-P based delivery system for enhanced bone regeneration.
Collapse
Affiliation(s)
- Jun Zhao
- Department of Orthodontics, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Magazù S, Migliardo F, Gonzalez MA, Mondelli C, Parker SF, Vertessy BG. Molecular mechanisms of survival strategies in extreme conditions. Life (Basel) 2012; 2:364-76. [PMID: 25371270 PMCID: PMC4187154 DOI: 10.3390/life2040364] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 11/08/2012] [Accepted: 11/26/2012] [Indexed: 01/04/2023] Open
Abstract
Today, one of the major challenges in biophysics is to disclose the molecular mechanisms underlying biological processes. In such a frame, the understanding of the survival strategies in extreme conditions received a lot of attention both from the scientific and applicative points of view. Since nature provides precious suggestions to be applied for improving the quality of life, extremophiles are considered as useful model-systems. The main goal of this review is to present an overview of some systems, with a particular emphasis on trehalose playing a key role in several extremophile organisms. The attention is focused on the relation among the structural and dynamic properties of biomolecules and bioprotective mechanisms, as investigated by complementary spectroscopic techniques at low- and high-temperature values.
Collapse
Affiliation(s)
- Salvatore Magazù
- Department of Physics, University of Messina, Viale D'Alcontres 31, P.O. Box 55-98166, Messina, Italy.
| | - Federica Migliardo
- Department of Physics, University of Messina, Viale D'Alcontres 31, P.O. Box 55-98166, Messina, Italy.
| | - Miguel A Gonzalez
- Institut Laue Langevin, 6, Rue Jules Horowitz, F-38042 Grenoble Cedex 9, France.
| | - Claudia Mondelli
- CNR-IOM-OGG, Institut Laue Langevin, 6, Rue Jules Horowitz, F-38042 Grenoble Cedex 9, France.
| | - Stewart F Parker
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxon, OX11 0QX, UK.
| | - Beata G Vertessy
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Science, Budapest, Hungary.
| |
Collapse
|
41
|
Vila Verde A, Campen RK. Disaccharide Topology Induces Slowdown in Local Water Dynamics. J Phys Chem B 2011; 115:7069-84. [DOI: 10.1021/jp112178c] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ana Vila Verde
- FOM Institute AMOLF, 104 Science Park, 1098 XG Amsterdam, The Netherlands
- Centro de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - R. Kramer Campen
- FOM Institute AMOLF, 104 Science Park, 1098 XG Amsterdam, The Netherlands
| |
Collapse
|
42
|
Abel S, Dupradeau FY, Raman EP, MacKerell AD, Marchi M. Molecular simulations of dodecyl-β-maltoside micelles in water: influence of the headgroup conformation and force field parameters. J Phys Chem B 2011; 115:487-99. [PMID: 21192681 PMCID: PMC3076730 DOI: 10.1021/jp109545v] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This paper deals with the development and validation of new potential parameter sets, based on the CHARMM36 and GLYCAM06 force fields, to simulate micelles of the two anomeric forms (α and β) of N-dodecyl-β-maltoside (C(12)G(2)), a surfactant widely used in the extraction and purification of membrane proteins. In this context, properties such as size, shape, internal structure, and hydration of the C(12)G(2) anomer micelles were thoroughly investigated by molecular dynamics simulations and the results compared with experiments. Additional simulations were also performed with the older CHARMM22 force field for carbohydrates (Kuttel, M.; et al. J. Comput. Chem. 2002, 23, 1236-1243). We find that our CHARMM and GLYCAM parameter sets yield similar results in the case of properties related to the micelle structure but differ for other properties such as the headgroup conformation or the micelle hydration. In agreement with experiments, our results show that for all model potentials the β-C(12)G(2) micelles have a more pronounced ellipsoidal shape than those containing α anomers. The computed radius of gyration is 20.2 and 25.4 Å for the α- and β-anomer micelles, respectively. Finally, we show that depending on the potential the water translational diffusion of the interfacial water is 7-11.5 times slower than that of bulk water due to the entrapment of the water in the micelle crevices. This retardation is independent of the headgroup in α- or β-anomers.
Collapse
Affiliation(s)
- Stéphane Abel
- Commissariat à l'Energie Atomique, DSV/iBiTEC-S/SB2SM/LBMS & CNRS URA 2096, Centre d'Etudes, Saclay, F-91191 Gif-sur-Yvette Cedex, France.
| | | | | | | | | |
Collapse
|
43
|
Magazù S, Migliardo F, Affouard F, Descamps M, Telling MTF. Study of the relaxational and vibrational dynamics of bioprotectant glass-forming mixtures by neutron scattering and molecular dynamics simulation. J Chem Phys 2010. [DOI: 10.1063/1.3407428] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
|
44
|
|
45
|
Paolantoni M, Comez L, Gallina ME, Sassi P, Scarponi F, Fioretto D, Morresi A. Light Scattering Spectra of Water in Trehalose Aqueous Solutions: Evidence for Two Different Solvent Relaxation Processes. J Phys Chem B 2009; 113:7874-8. [DOI: 10.1021/jp9004983] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Paolantoni
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| | - L. Comez
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| | - M. E. Gallina
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| | - P. Sassi
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| | - F. Scarponi
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| | - D. Fioretto
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| | - A. Morresi
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8, I-06123 Perugia, Italy, CNISM-Dipartimento di Fisica, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy, and CRS SOFT INFM-CNR, c/o Dipartimento di Fisica, Università La Sapienza, P.le Aldo Moro 4, I-00185 Roma, Italy
| |
Collapse
|
46
|
Köper I, Combet S, Petry W, Bellissent-Funel MC. Dynamics of C-phycocyanin in various deuterated trehalose/water environments measured by quasielastic and elastic neutron scattering. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2008; 37:739-48. [PMID: 18185929 PMCID: PMC2755759 DOI: 10.1007/s00249-007-0248-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2007] [Revised: 11/28/2007] [Accepted: 12/06/2007] [Indexed: 11/25/2022]
Abstract
The molecular understanding of protein stabilization by the disaccharide trehalose in extreme temperature or hydration conditions is still debated. In the present study, we investigated the role of trehalose on the dynamics of the protein C-phycocyanin (C-PC) by neutron scattering. To single out the motions of C-PC hydrogen (H) atoms in various trehalose/water environments, measurements were performed in deuterated trehalose and heavy water (D2O). We report that trehalose decreases the internal C-PC dynamics, as shown by a reduced diffusion coefficient of protein H atoms. By fitting the Elastic Incoherent Structure Factor--which gives access to the "geometry" of the internal proton motions--with the model of diffusion inside a sphere, we found that the presence of trehalose induces a significantly higher proportion of immobile C-PC hydrogens. We investigated, by elastic neutron scattering, the mean square displacements (MSDs) of deuterated trehalose/D2O-embedded C-PC as a function of temperature in the range of 40-318 K. Between 40 and approximately 225 K, harmonic MSDs of C-PC are slightly smaller in samples containing trehalose. Above a transition temperature of approximately 225 K, we observed anharmonic motions in all trehalose/water-coated C-PC samples. In the hydrated samples, MSDs are not significantly changed by addition of 15% trehalose but are slightly reduced by 30% trehalose. In opposition, no dynamical transition was detected in dry trehalose-embedded C-PC, whose hydrogen motions remain harmonic up to 318 K. These results suggest that a role of trehalose would be to stabilize proteins by inhibiting some fluctuations at the origin of protein unfolding and denaturation.
Collapse
Affiliation(s)
- Ingo Köper
- Laboratoire Léon-Brillouin UMR 12 CEA/CNRS, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, France
- Fakultät für Physik E13, Technische Universität München, 85747 Garching, Germany
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Sophie Combet
- Laboratoire Léon-Brillouin UMR 12 CEA/CNRS, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Winfried Petry
- Fakultät für Physik E13, Technische Universität München, 85747 Garching, Germany
| | | |
Collapse
|