1
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Sharma P, Vaiwala R, Gopinath AK, Chockalingam R, Ayappa KG. Structure of the Bacterial Cell Envelope and Interactions with Antimicrobials: Insights from Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7791-7811. [PMID: 38451026 DOI: 10.1021/acs.langmuir.3c03474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Bacteria have evolved over 3 billion years, shaping our intrinsic and symbiotic coexistence with these single-celled organisms. With rising populations of drug-resistant strains, the search for novel antimicrobials is an ongoing area of research. Advances in high-performance computing platforms have led to a variety of molecular dynamics simulation strategies to study the interactions of antimicrobial molecules with different compartments of the bacterial cell envelope of both Gram-positive and Gram-negative species. In this review, we begin with a detailed description of the structural aspects of the bacterial cell envelope. Simulations concerned with the transport and associated free energy of small molecules and ions through the outer membrane, peptidoglycan, inner membrane and outer membrane porins are discussed. Since surfactants are widely used as antimicrobials, a section is devoted to the interactions of surfactants with the cell wall and inner membranes. The review ends with a discussion on antimicrobial peptides and the insights gained from the molecular simulations on the free energy of translocation. Challenges involved in developing accurate molecular models and coarse-grained strategies that provide a trade-off between atomic details with a gain in sampling time are highlighted. The need for efficient sampling strategies to obtain accurate free energies of translocation is also discussed. Molecular dynamics simulations have evolved as a powerful tool that can potentially be used to design and develop novel antimicrobials and strategies to effectively treat bacterial infections.
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Affiliation(s)
- Pradyumn Sharma
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India, 560012
| | - Rakesh Vaiwala
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India, 560012
| | - Amar Krishna Gopinath
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India, 560012
| | - Rajalakshmi Chockalingam
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India, 560012
| | - K Ganapathy Ayappa
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India, 560012
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2
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Müller WA, Sarkis JR, Marczak LDF, Muniz AR. Molecular dynamics insights on temperature and pressure effects on electroporation. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:184049. [PMID: 36113558 DOI: 10.1016/j.bbamem.2022.184049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 06/15/2023]
Abstract
Electroporation is a cell-level phenomenon caused by an ionic imbalance in the membrane, being of great relevance in various fields of knowledge. A dependence of the pore formation kinetics on the environmental conditions (temperature and pressure) of the cell membrane has already been reported, but further clarification regarding how these variables affect the pore formation/resealing dynamics and the transport of molecules through the membrane is still lacking. The objective of the present study was to investigate the temperature (288-348 K) and pressure (1-5000 atm) effects on the electroporation kinetics using coarse-grained molecular dynamics simulations. Results shown that the time for pore formation and resealing increased with pressure and decreased with temperature, whereas the maximum pore radius increased with temperature and decreased with pressure. This behavior influenced the ion migration through the bilayer, and the higher ionic mobility was obtained in the 288 K/1000 atm simulations, i.e., a combination of low temperature and (not excessively) high pressure. These results were used to discuss some experimental observations regarding the extraction of intracellular compounds applying this technique. This study contributes to a better understanding of electroporation under different thermodynamic conditions and to an optimal selection of processing parameters in practical applications which exploit this phenomenon.
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Affiliation(s)
- Wagner Augusto Müller
- Universidade Federal do Rio Grande do Sul (UFRGS), Department of Chemical Engineering, Porto Alegre, RS, Brazil
| | - Júlia Ribeiro Sarkis
- Universidade Federal do Rio Grande do Sul (UFRGS), Department of Chemical Engineering, Porto Alegre, RS, Brazil
| | | | - André Rodrigues Muniz
- Universidade Federal do Rio Grande do Sul (UFRGS), Department of Chemical Engineering, Porto Alegre, RS, Brazil.
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3
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Dresser L, Graham SP, Miller LM, Schaefer C, Conteduca D, Johnson S, Leake MC, Quinn SD. Tween-20 Induces the Structural Remodeling of Single Lipid Vesicles. J Phys Chem Lett 2022; 13:5341-5350. [PMID: 35678387 PMCID: PMC9208007 DOI: 10.1021/acs.jpclett.2c00704] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/31/2022] [Indexed: 05/04/2023]
Abstract
The solubilization of lipid membranes by Tween-20 is crucial for a number of biotechnological applications, but the mechanistic details remain elusive. Evidence from ensemble assays supports a solubilization model that encompasses surfactant association with the membrane and the release of mixed micelles to solution, but whether this process also involves intermediate transitions between regimes is unanswered. In search of mechanistic origins, increasing focus is placed on identifying Tween-20 interactions with controllable membrane mimetics. Here, we employed ultrasensitive biosensing approaches, including single-vesicle spectroscopy based on fluorescence and energy transfer from membrane-encapsulated molecules, to interrogate interactions between Tween-20 and submicrometer-sized vesicles below the optical diffraction limit. We discovered that Tween-20, even at concentrations below the critical micellar concentration, triggers stepwise and phase-dependent structural remodeling events, including permeabilization and swelling, in both freely diffusing and surface-tethered vesicles, highlighting the substantial impact the surfactant has on vesicle conformation and stability prior to lysis.
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Affiliation(s)
- Lara Dresser
- Department
of Physics, University of York, York YO10 5DD, U.K.
| | - Sarah P. Graham
- Department
of Physics, University of York, York YO10 5DD, U.K.
| | - Lisa M. Miller
- Department
of Electronic Engineering, University of
York, York YO10 5DD, U.K.
| | | | | | - Steven Johnson
- Department
of Electronic Engineering, University of
York, York YO10 5DD, U.K.
- York
Biomedical Research Institute, University
of York, York YO10 5DD, U.K.
| | - Mark C. Leake
- Department
of Physics, University of York, York YO10 5DD, U.K.
- Department
of Biology, University of York, York YO10 5DD, U.K.
- York
Biomedical Research Institute, University
of York, York YO10 5DD, U.K.
| | - Steven D. Quinn
- Department
of Physics, University of York, York YO10 5DD, U.K.
- York
Biomedical Research Institute, University
of York, York YO10 5DD, U.K.
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4
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Archer BJ, Mack JJ, Acosta S, Nakasone R, Dahoud F, Youssef K, Goldstein A, Goldsman A, Held MC, Wiese M, Blumich B, Wessling M, Emondts M, Klankermayer J, Iruela-Arispe ML, Bouchard LS. Mapping Cell Viability Quantitatively and Independently From Cell Density in 3D Gels Noninvasively. IEEE Trans Biomed Eng 2021; 68:2940-2947. [PMID: 33531296 PMCID: PMC8326301 DOI: 10.1109/tbme.2021.3056526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE In biomanufacturing there is a need for quantitative methods to map cell viability and density inside 3D bioreactors to assess health and proliferation over time. Recently, noninvasive MRI readouts of cell density have been achieved. However, the ratio of live to dead cells was not varied. Herein we present an approach for measuring the viability of cells embedded in a hydrogel independently from cell density to map cell number and health. METHODS Independent quantification of cell viability and density was achieved by calibrating the 1H magnetization transfer- (MT) and diffusion-weighted NMR signals to samples of known cell density and viability using a multivariate approach. Maps of cell viability and density were generated by weighting NMR images by these parameters post-calibration. RESULTS Using this method, the limits of detection (LODs) of total cell density and viable cell density were found to be 3.88 ×108 cells · mL -1· Hz -1/2 and 2.36 ×109 viable cells · mL -1· Hz -1/2 respectively. CONCLUSION This mapping technique provides a noninvasive means of visualizing cell viability and number density within optically opaque bioreactors. SIGNIFICANCE We anticipate that such nondestructive readouts will provide valuable feedback for monitoring and controlling cell populations in bioreactors.
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5
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Alessandri R, Grünewald F, Marrink SJ. The Martini Model in Materials Science. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008635. [PMID: 33956373 DOI: 10.1002/adma.202008635] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/15/2021] [Indexed: 06/12/2023]
Abstract
The Martini model, a coarse-grained force field initially developed with biomolecular simulations in mind, has found an increasing number of applications in the field of soft materials science. The model's underlying building block principle does not pose restrictions on its application beyond biomolecular systems. Here, the main applications to date of the Martini model in materials science are highlighted, and a perspective for the future developments in this field is given, particularly in light of recent developments such as the new version of the model, Martini 3.
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Affiliation(s)
- Riccardo Alessandri
- Zernike Institute for Advanced Materials and Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Fabian Grünewald
- Zernike Institute for Advanced Materials and Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Siewert J Marrink
- Zernike Institute for Advanced Materials and Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
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6
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Souza LM, Souza FR, Reynaud F, Pimentel AS. Tuning the hydrophobicity of a coarse grained model of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine using the experimental octanol-water partition coefficient. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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7
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Sun D, Peyear TA, Bennett WFD, Holcomb M, He S, Zhu F, Lightstone FC, Andersen OS, Ingólfsson HI. Assessing the Perturbing Effects of Drugs on Lipid Bilayers Using Gramicidin Channel-Based In Silico and In Vitro Assays. J Med Chem 2020; 63:11809-11818. [PMID: 32945672 PMCID: PMC7586341 DOI: 10.1021/acs.jmedchem.0c00958] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Indexed: 01/07/2023]
Abstract
Partitioning of bioactive molecules, including drugs, into cell membranes may produce indiscriminate changes in membrane protein function. As a guide to safe drug development, it therefore becomes important to be able to predict the bilayer-perturbing potency of hydrophobic/amphiphilic drugs candidates. Toward this end, we exploited gramicidin channels as molecular force probes and developed in silico and in vitro assays to measure drugs' bilayer-modifying potency. We examined eight drug-like molecules that were found to enhance or suppress gramicidin channel function in a thick 1,2-dierucoyl-sn-glycero-3-phosphocholine (DC22:1PC) but not in thin 1,2-dioleoyl-sn-glycero-3-phosphocholine (DC18:1PC) lipid bilayer. The mechanism underlying this difference was attributable to the changes in gramicidin dimerization free energy by drug-induced perturbations of lipid bilayer physical properties and bilayer-gramicidin interactions. The combined in silico and in vitro approaches, which allow for predicting the perturbing effects of drug candidates on membrane protein function, have implications for preclinical drug safety assessment.
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Affiliation(s)
- Delin Sun
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Thasin A. Peyear
- Department
of Physiology and Biophysics, Weill Cornell
Medicine, New York, New York 10065, United States
| | - W. F. Drew Bennett
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Matthew Holcomb
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Stewart He
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Fangqiang Zhu
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Felice C. Lightstone
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Olaf S. Andersen
- Department
of Physiology and Biophysics, Weill Cornell
Medicine, New York, New York 10065, United States
| | - Helgi I. Ingólfsson
- Biosciences
and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
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8
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Dalgarno PA, Juan-Colás J, Hedley GJ, Piñeiro L, Novo M, Perez-Gonzalez C, Samuel IDW, Leake MC, Johnson S, Al-Soufi W, Penedo JC, Quinn SD. Unveiling the multi-step solubilization mechanism of sub-micron size vesicles by detergents. Sci Rep 2019; 9:12897. [PMID: 31501469 PMCID: PMC6733941 DOI: 10.1038/s41598-019-49210-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/21/2019] [Indexed: 11/09/2022] Open
Abstract
The solubilization of membranes by detergents is critical for many technological applications and has become widely used in biochemistry research to induce cell rupture, extract cell constituents, and to purify, reconstitute and crystallize membrane proteins. The thermodynamic details of solubilization have been extensively investigated, but the kinetic aspects remain poorly understood. Here we used a combination of single-vesicle Förster resonance energy transfer (svFRET), fluorescence correlation spectroscopy and quartz-crystal microbalance with dissipation monitoring to access the real-time kinetics and elementary solubilization steps of sub-micron sized vesicles, which are inaccessible by conventional diffraction-limited optical methods. Real-time injection of a non-ionic detergent, Triton X, induced biphasic solubilization kinetics of surface-immobilized vesicles labelled with the Dil/DiD FRET pair. The nanoscale sensitivity accessible by svFRET allowed us to unambiguously assign each kinetic step to distortions of the vesicle structure comprising an initial fast vesicle-swelling event followed by slow lipid loss and micellization. We expect the svFRET platform to be applicable beyond the sub-micron sizes studied here and become a unique tool to unravel the complex kinetics of detergent-lipid interactions.
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Affiliation(s)
- Paul A Dalgarno
- SUPA School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK.,Institute of Biological Physics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - José Juan-Colás
- Department of Electronic Engineering, University of York, Heslington, York, YO10 5DD, UK
| | - Gordon J Hedley
- SUPA School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK.,School of Chemistry, University of Glasgow, Glasgow, Scotland, G12 8QQ, United Kingdom
| | - Lucas Piñeiro
- Department of Physical Chemistry, Faculty of Science, University of Santiago de Compostela, Lugo, E-27002, Spain
| | - Mercedes Novo
- Department of Physical Chemistry, Faculty of Science, University of Santiago de Compostela, Lugo, E-27002, Spain
| | - Cibran Perez-Gonzalez
- SUPA School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK
| | - Ifor D W Samuel
- SUPA School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK
| | - Mark C Leake
- Department of Physics, University of York, Heslington, York, England, YO10 5DD, UK.,Department of Biology, University of York, Heslington, York, YO10 5DD, UK
| | - Steven Johnson
- Department of Electronic Engineering, University of York, Heslington, York, YO10 5DD, UK
| | - Wajih Al-Soufi
- Department of Physical Chemistry, Faculty of Science, University of Santiago de Compostela, Lugo, E-27002, Spain
| | - J Carlos Penedo
- SUPA School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK. .,Biomedical Sciences Research Complex, University of St. Andrews, North Haugh, St. Andrews, Fife, KY16 9ST, UK.
| | - Steven D Quinn
- SUPA School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK. .,Department of Physics, University of York, Heslington, York, England, YO10 5DD, UK. .,Department of Biology, University of York, Heslington, York, YO10 5DD, UK.
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9
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Borden MA. Intermolecular Forces Model for Lipid Microbubble Shells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10042-10051. [PMID: 30543753 DOI: 10.1021/acs.langmuir.8b03641] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Lipid-coated microbubbles are currently used clinically as ultrasound contrast agents for echocardiography and radiology and are being developed for many new diagnostic and therapeutic applications. Accordingly, there is a growing need to engineer specific formulations by employing rational design to guide lipid selection and processing. This approach requires a quantitative relationship between lipid chemistry and interfacial properties of the microbubble shell. Just such a model is proposed here on the basis of lateral Coulomb and van der Waals interactions between lipid head- and tailgroups, using previous coarse graining and force fields developed for molecular dynamics simulations. The model predicts with sufficient accuracy the monolayer permeability, the elasticity as a function of either lipid composition or temperature, and the equilibrium spreading surface tension of the lipid onto an air/water interface. In the future, the intermolecular forces model could be employed to elucidate more complex phenomena and to engineer novel microbubble formulations.
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Affiliation(s)
- Mark Andrew Borden
- Mechanical Engineering , University of Colorado , Boulder , Colorado 80309-0427 , United States
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10
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Xue M, Cheng L, Faustino I, Guo W, Marrink SJ. Molecular Mechanism of Lipid Nanodisk Formation by Styrene-Maleic Acid Copolymers. Biophys J 2018; 115:494-502. [PMID: 29980293 PMCID: PMC6084417 DOI: 10.1016/j.bpj.2018.06.018] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 05/02/2018] [Accepted: 06/11/2018] [Indexed: 01/06/2023] Open
Abstract
Experimental characterization of membrane proteins often requires solubilization. A recent approach is to use styrene-maleic acid (SMA) copolymers to isolate membrane proteins in nanometer-sized membrane disks, or so-called SMA lipid particles (SMALPs). The approach has the advantage of allowing direct extraction of proteins, keeping their native lipid environment. Despite the growing popularity of using SMALPs, the molecular mechanism behind the process remains poorly understood. Here, we unravel the molecular details of the nanodisk formation by using coarse-grained molecular dynamics simulations. We show how SMA copolymers bind to the lipid bilayer interface, driven by the hydrophobic effect. Due to the concerted action of multiple adsorbed copolymers, large membrane defects appear, including small, water-filled pores. The copolymers can stabilize the rim of these pores, leading to pore growth and membrane disruption. Although complete solubilization is not seen on the timescale of our simulations, self-assembly experiments show that small nanodisks are the thermodynamically preferred end state. Our findings shed light on the mechanism of SMALP formation and on their molecular structure. This can be an important step toward the design of optimized extraction tools for membrane protein research.
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Affiliation(s)
- Minmin Xue
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, Nanjing, People's Republic of China; Groningen Biomolecular Science and Biotechnology Institute, University of Groningen, Groningen, the Netherlands; Zernike Institute for Advanced Materials, University of Groningen, Groningen, the Netherlands
| | - Lisheng Cheng
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing, People's Republic of China
| | - Ignacio Faustino
- Groningen Biomolecular Science and Biotechnology Institute, University of Groningen, Groningen, the Netherlands; Zernike Institute for Advanced Materials, University of Groningen, Groningen, the Netherlands
| | - Wanlin Guo
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, Nanjing, People's Republic of China
| | - Siewert J Marrink
- Groningen Biomolecular Science and Biotechnology Institute, University of Groningen, Groningen, the Netherlands; Zernike Institute for Advanced Materials, University of Groningen, Groningen, the Netherlands.
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11
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Haller T, Cerrada A, Pfaller K, Braubach P, Felder E. Polarized light microscopy reveals physiological and drug-induced changes in surfactant membrane assembly in alveolar type II pneumocytes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:1152-1161. [DOI: 10.1016/j.bbamem.2018.01.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 12/05/2017] [Accepted: 01/04/2018] [Indexed: 12/16/2022]
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12
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Espinosa YR, Caffarena ER, Martínez YB, Grigera JR. Pressure effect on micellization of non-ionic surfactant Triton X-100. J Chem Phys 2018; 148:074901. [DOI: 10.1063/1.5003358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Affiliation(s)
- Yanis R. Espinosa
- Instituto de Física de Líquidos y Sistemas Biológicos (CONICET-UNLP), Calle 59 Nro 789, B1900BTE La Plata, Argentina
| | - Ernesto R. Caffarena
- Programa de Computação Científica (PROCC), Fundação Oswaldo Cruz. Manguinhos, CEP 21040-360 Rio de Janeiro, Brazil
| | | | - J. Raúl Grigera
- CEQUINOR, Universidad de La Plata and CONICET, 47 y 115, B1900 La Plata, Argentina
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13
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Hayden SC, Junghans A, Majewski J, Firestone MA. Reversible Lifting of Surface Supported Lipid Bilayers with a Membrane-Spanning Nonionic Triblock Copolymer. Biomacromolecules 2017; 18:1097-1107. [DOI: 10.1021/acs.biomac.6b01461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steven C. Hayden
- Materials Physics & Applications, Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Mail Stop K771, Los Alamos, New Mexico 87545, United States
| | - Ann Junghans
- Lujan
Neutron Scattering Center, Los Alamos Neutron Science Center (LANSCE), Los Alamos National Laboratory, Mail Stop H805, Los Alamos, New Mexico 87545, United States
- Materials Science & Engineering (MST-7), Los Alamos National Laboratory, Mail Stop H805, Los Alamos, New Mexico 87545, United States
| | - Jaroslaw Majewski
- Materials Physics & Applications, Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Mail Stop K771, Los Alamos, New Mexico 87545, United States
- Lujan
Neutron Scattering Center, Los Alamos Neutron Science Center (LANSCE), Los Alamos National Laboratory, Mail Stop H805, Los Alamos, New Mexico 87545, United States
- Department
of Chemical Engineering, University of California Davis, Davis, California 95616, United States
| | - Millicent A. Firestone
- Materials Physics & Applications, Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Mail Stop K771, Los Alamos, New Mexico 87545, United States
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14
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Ndao M, Goujon F, Ghoufi A, Malfreyt P. Coarse-grained modeling of the oil–water–surfactant interface through the local definition of the pressure tensor and interfacial tension. Theor Chem Acc 2017. [DOI: 10.1007/s00214-016-2038-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Pizzirusso A, De Nicola A, Sevink GJA, Correa A, Cascella M, Kawakatsu T, Rocco M, Zhao Y, Celino M, Milano G. Biomembrane solubilization mechanism by Triton X-100: a computational study of the three stage model. Phys Chem Chem Phys 2017; 19:29780-29794. [DOI: 10.1039/c7cp03871b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The solubilization mechanism of lipid membranes in the presence of Triton X-100 (TX-100) is investigated at molecular resolution using hybrid particle field–self consistence field simulations.
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Affiliation(s)
| | - Antonio De Nicola
- Dipartimento di Chimica e Biologia
- Università di Salerno
- Fisciano
- Italy
| | - G. J. Agur Sevink
- Leiden Institute of Chemistry
- Leiden University
- 2300 RA Leiden
- The Netherlands
| | - Andrea Correa
- Department of Chemical Science
- Federico II University of Naples
- 80126 Napoli
- Italy
| | - Michele Cascella
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences
- University of Oslo
- 0371 Oslo
- Norway
| | | | - Mattia Rocco
- Biopolimeri e Proteomica
- Ospedale Policlinico San Martino
- Genova
- Italy
| | - Ying Zhao
- Institute of Nano-Photonics
- School of Physics and Materials Engineering
- Dalian Minzu University
- Dalian 116600
- China
| | | | - Giuseppe Milano
- Dipartimento di Chimica e Biologia
- Università di Salerno
- Fisciano
- Italy
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16
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Lu J, Jacobson LC, Perez Sirkin YA, Molinero V. High-Resolution Coarse-Grained Model of Hydrated Anion-Exchange Membranes that Accounts for Hydrophobic and Ionic Interactions through Short-Ranged Potentials. J Chem Theory Comput 2016; 13:245-264. [PMID: 28068769 DOI: 10.1021/acs.jctc.6b00874] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jibao Lu
- Department
of Chemistry, The University of Utah, Salt Lake City, Utah 84112-0850, United States
| | - Liam C. Jacobson
- Department
of Chemistry, The University of Utah, Salt Lake City, Utah 84112-0850, United States
| | - Yamila A. Perez Sirkin
- Departamento
de Química Inorgánica, Analítica y Química
Física, and INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EHA, Argentina
| | - Valeria Molinero
- Department
of Chemistry, The University of Utah, Salt Lake City, Utah 84112-0850, United States
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