1
|
McCarthy NLC, Chan CL, Mignini Urdaneta GECM, Liao Y, Law RV, Ces O, Seddon JM, Brooks NJ. The effect of hydrostatic pressure on lipid membrane lateral structure. Methods Enzymol 2024; 700:49-76. [PMID: 38971612 DOI: 10.1016/bs.mie.2024.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2024]
Abstract
High pressure is both an environmental challenge to which deep sea biology has to adapt, and a highly sensitive thermodynamic tool that can be used to trigger structural changes in biological molecules and assemblies. Lipid membranes are amongst the most pressure sensitive biological assemblies and pressure can have a large influence on their structure and properties. In this chapter, we will explore the use of high pressure small angle X-ray diffraction and high pressure microscopy to measure and quantify changes in the lateral structure of lipid membranes under both equilibrium high pressure conditions and in response to pressure jumps.
Collapse
Affiliation(s)
| | - Chi L Chan
- Department of Chemistry, Imperial College London, London, United Kingdom
| | | | - Yifei Liao
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Robert V Law
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Oscar Ces
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - John M Seddon
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Nicholas J Brooks
- Department of Chemistry, Imperial College London, London, United Kingdom.
| |
Collapse
|
2
|
Kinoshita T, Haketa Y, Maeda H, Fukuhara G. Ground- and excited-state dynamic control of an anion receptor by hydrostatic pressure. Chem Sci 2021; 12:6691-6698. [PMID: 34040743 PMCID: PMC8132960 DOI: 10.1039/d1sc00664a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/31/2021] [Indexed: 12/02/2022] Open
Abstract
Stimulus-responsive supramolecular architectures have become an attractive alternative to conventional ones for many applications in sensing, drug-delivery and switchable memory systems. Herein, we used an anion receptor (H: host) as a hydrostatic-pressure-manipulatable fluorescence foldamer and halide anions as chiral (binaphthylammonium) and achiral (tetrabutylammonium) ion pairs (SS or RR ·X and TBA·X; X = Cl, Br), and then investigated their (chir)optical properties and molecular recognition behavior under hydrostatic pressures. The conformational changes and optical properties of H in various organic solvents were revealed by UV/vis absorption and fluorescence spectra and fluorescence lifetimes upon hydrostatic pressurization. The anion-recognition abilities of H upon interactions with SS or RR·X and TBA·X at different pressure ranges were determined by hydrostatic-pressure spectroscopy to quantitatively afford the binding constant (K anion) and apparent reaction volume changes . The results obtained indicate that hydrostatic pressure as well as solvation plays significant roles in the dynamic control of the present supramolecular system in the ground and excited states. This work will provide a new guideline for further developing hydrostatic-pressure-responsive foldamers and supramolecular materials.
Collapse
Affiliation(s)
- Tomokazu Kinoshita
- Department of Chemistry, Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Gaku Fukuhara
- Department of Chemistry, Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8551 Japan
- JST, PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
3
|
Shintani SA. Effects of high-pressure treatment on the structure and function of myofibrils. Biophys Physicobiol 2021; 18:85-95. [PMID: 33977006 PMCID: PMC8056150 DOI: 10.2142/biophysico.bppb-v18.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 03/23/2021] [Indexed: 12/01/2022] Open
Abstract
The effects of high pressure (40-70 MPa) on the structure and function of myofibrils were investigated by high pressure microscopy. When this pressure was applied to myofibrils immersed in relaxing solution, the sarcomere length remained almost unchanged, and the A band became shorter and wider. The higher the applied pressure, the faster the change. However, shortening and widening of the A band were not observed when pressure was applied to myofibrils immersed in a solution obtained by omitting ATP from the relaxing solution. However, even under these conditions, structural loss, such as loss of the Z-line structure, occurred. In order to evaluate the consequences of this pressure-treated myofibril, the oscillatory movement of sarcomere (sarcomeric oscillation) was evoked and observed. It was possible to induce sarcomeric oscillation even in pressure-treated myofibrils whose structure was destroyed. The pressurization reduced the total power of the sarcomeric oscillation, but did not change the average frequency. The average frequency did not change even when a pressure of about 40 MPa was applied during sarcomeric oscillation. The average frequency returned to the original when the pressure was returned to the original value after applying stronger pressure to prevent the sarcomere oscillation from being observed. This result suggests that the decrease in the number of myosin molecules forming the crossbridge does not affect the average frequency of sarcomeric oscillation. This fact will help build a mechanical hypothesis for sarcomeric oscillation. The pressurization treatment is a unique method for controlling the structure of myofibrils as described above.
Collapse
Affiliation(s)
- Seine A Shintani
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Aichi 487-8501, Japan
| |
Collapse
|
4
|
Ando N, Barquera B, Bartlett DH, Boyd E, Burnim AA, Byer AS, Colman D, Gillilan RE, Gruebele M, Makhatadze G, Royer CA, Shock E, Wand AJ, Watkins MB. The Molecular Basis for Life in Extreme Environments. Annu Rev Biophys 2021; 50:343-372. [PMID: 33637008 DOI: 10.1146/annurev-biophys-100120-072804] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Sampling and genomic efforts over the past decade have revealed an enormous quantity and diversity of life in Earth's extreme environments. This new knowledge of life on Earth poses the challenge of understandingits molecular basis in such inhospitable conditions, given that such conditions lead to loss of structure and of function in biomolecules from mesophiles. In this review, we discuss the physicochemical properties of extreme environments. We present the state of recent progress in extreme environmental genomics. We then present an overview of our current understanding of the biomolecular adaptation to extreme conditions. As our current and future understanding of biomolecular structure-function relationships in extremophiles requires methodologies adapted to extremes of pressure, temperature, and chemical composition, advances in instrumentation for probing biophysical properties under extreme conditions are presented. Finally, we briefly discuss possible future directions in extreme biophysics.
Collapse
Affiliation(s)
- Nozomi Ando
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA.,Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Blanca Barquera
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, USA;
| | - Douglas H Bartlett
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0202, USA
| | - Eric Boyd
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana 59717, USA
| | - Audrey A Burnim
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Amanda S Byer
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Daniel Colman
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana 59717, USA
| | - Richard E Gillilan
- Center for High Energy X-ray Sciences (CHEXS), Ithaca, New York 14853, USA
| | - Martin Gruebele
- Department of Chemistry, University of Illinois, Urbana-Champaign, Illinois 61801, USA.,Department of Physics, University of Illinois, Urbana-Champaign, Illinois 61801, USA.,Center for Biophysics and Quantitative Biology, University of Illinois, Urbana-Champaign, Illinois 61801, USA
| | - George Makhatadze
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, USA;
| | - Catherine A Royer
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, USA;
| | - Everett Shock
- GEOPIG, School of Earth & Space Exploration, School of Molecular Sciences, Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, Arizona 85287, USA
| | - A Joshua Wand
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, Texas 77845, USA.,Department of Chemistry, Texas A&M University, College Station, Texas 77845, USA.,Department of Molecular & Cellular Medicine, Texas A&M University, College Station, Texas 77845, USA
| | - Maxwell B Watkins
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, USA.,Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| |
Collapse
|
5
|
Miyagawa A, Yoneda H, Mizuno H, Numata M, Okada T, Fukuhara G. Hydrostatic‐Pressure‐Controlled Molecular Recognition: A Steroid Sensing Case Using Modified Cyclodextrin. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Akihisa Miyagawa
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
| | - Hiroshi Yoneda
- Department of Biomolecular Chemistry Graduate School of Life and Environmental Sciences Kyoto Prefectural University Shimogamo, Sakyo-ku, Kyoto 606-8522 Japan
| | - Hiroaki Mizuno
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
| | - Munenori Numata
- Department of Biomolecular Chemistry Graduate School of Life and Environmental Sciences Kyoto Prefectural University Shimogamo, Sakyo-ku, Kyoto 606-8522 Japan
| | - Tetsuo Okada
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
| | - Gaku Fukuhara
- Department of Chemistry Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
- JST, PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
6
|
Bourges AC, Lazarev A, Declerck N, Rogers KL, Royer CA. Quantitative High-Resolution Imaging of Live Microbial Cells at High Hydrostatic Pressure. Biophys J 2020; 118:2670-2679. [PMID: 32402241 DOI: 10.1016/j.bpj.2020.04.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/19/2020] [Accepted: 04/16/2020] [Indexed: 10/24/2022] Open
Abstract
The majority of the Earth's microbial biomass exists in the deep biosphere, in the deep ocean, and within the Earth's crust. Although other physical parameters in these environments, such as temperature or pH, can differ substantially, they are all under high pressures. Beyond emerging genomic information, little is known about the molecular mechanisms underlying the ability of these organisms to survive and grow at pressures that can reach over 1000-fold the pressure on the Earth's surface. The mechanisms of pressure adaptation are also important in food safety, with the increasing use of high-pressure food processing. Advanced imaging represents an important tool for exploring microbial adaptation and response to environmental changes. Here, we describe implementation of a high-pressure sample chamber with a two-photon scanning microscope system, allowing for the first time, to our knowledge, quantitative high-resolution two-photon imaging at 100 MPa of living microbes from all three kingdoms of life. We adapted this setup for fluorescence lifetime imaging microscopy with phasor analysis (FLIM/Phasor) and investigated metabolic responses to pressure of live cells from mesophilic yeast and bacterial strains, as well as the piezophilic archaeon Archaeoglobus fulgidus. We also monitored by fluorescence intensity fluctuation-based methods (scanning number and brightness and raster scanning imaging correlation spectroscopy) the effect of pressure on the chromosome-associated protein HU and on the ParB partition protein in Escherichia coli, revealing partially reversible dissociation of ParB foci and concomitant nucleoid condensation. These results provide a proof of principle that quantitative, high-resolution imaging of live microbial cells can be carried out at pressures equivalent to those in the deepest ocean trenches.
Collapse
Affiliation(s)
- Anais C Bourges
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York; Centre de Biochimie Structrurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, France; INRAE, MICA Department, Jouy-en-Josas, France
| | | | - Nathalie Declerck
- Centre de Biochimie Structrurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, France; INRAE, MICA Department, Jouy-en-Josas, France
| | - Karyn L Rogers
- Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, New York
| | - Catherine A Royer
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York.
| |
Collapse
|
7
|
Mizuno H, Kitamatsu M, Imai Y, Fukuhara G. Smart Fluorescence Materials that Are Controllable by Hydrostatic Pressure: Peptide−Pyrene Conjugates. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hiroaki Mizuno
- Department of ChemistryTokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Mizuki Kitamatsu
- Department of Applied ChemistryFaculty of Science and EngineeringKindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Yoshitane Imai
- Department of Applied ChemistryFaculty of Science and EngineeringKindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Gaku Fukuhara
- Department of ChemistryTokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8551 Japan
- JST, PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
8
|
Hata H, Nishiyama M, Kitao A. Molecular dynamics simulation of proteins under high pressure: Structure, function and thermodynamics. Biochim Biophys Acta Gen Subj 2019; 1864:129395. [PMID: 31302180 DOI: 10.1016/j.bbagen.2019.07.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 07/03/2019] [Accepted: 07/08/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Molecular dynamics (MD) simulation is well-recognized as a powerful tool to investigate protein structure, function, and thermodynamics. MD simulation is also used to investigate high pressure effects on proteins. For conducting better MD simulation under high pressure, the main issues to be addressed are: (i) protein force fields and water models were originally developed to reproduce experimental properties obtained at ambient pressure; and (ii) the timescale to observe the pressure effect is often much longer than that of conventional MD simulations. SCOPE OF REVIEW First, we describe recent developments in MD simulation methodologies for studying the high-pressure structure and dynamics of protein molecules. These developments include force fields for proteins and water molecules, and enhanced simulation techniques. Then, we summarize recent studies of MD simulations of proteins in water under high pressure. MAJOR CONCLUSIONS Recent MD simulations of proteins in solution under pressure have reproduced various phenomena identified by experiments using high pressure, such as hydration, water penetration, conformational change, helix stabilization, and molecular stiffening. GENERAL SIGNIFICANCE MD simulations demonstrate differences in the properties of proteins and water molecules between ambient and high-pressure conditions. Comparing the results obtained by MD calculations with those obtained experimentally could reveal the mechanism by which biological molecular machines work well in collaboration with water molecules.
Collapse
Affiliation(s)
- Hiroaki Hata
- School of Life Science and Technology, Tokyo Institute of Technology, Ookayama, 2-12-1 Meguro-ku, Tokyo 152-8550, Japan
| | - Masayoshi Nishiyama
- Department of Physics, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Akio Kitao
- School of Life Science and Technology, Tokyo Institute of Technology, Ookayama, 2-12-1 Meguro-ku, Tokyo 152-8550, Japan.
| |
Collapse
|
9
|
Schneidereit D, Schürmann S, Friedrich O. PiezoGRIN: A High-Pressure Chamber Incorporating GRIN Lenses for High-Resolution 3D-Microscopy of living Cells and Tissues. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801453. [PMID: 30828527 PMCID: PMC6382305 DOI: 10.1002/advs.201801453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/15/2018] [Indexed: 05/30/2023]
Abstract
A high-pressure optical chamber, PiezoGRIN, that facilitates label-free 3D high-resolution live-cell multiphoton microscopy in thick tissue samples is presented. A set of two Gradient Index (GRIN) rod lenses is integrated into the chamber as an optical guide and allows for the adjustment of the focal plane through the sample providing a field of view volume of 450 × 450 × 500 µm (x, y, z). An optical lateral resolution of 0.8 µm is achieved by using two-photon excitation with 150 fs pulses of a 810 nm titanium-sapphire laser at hydrostatic pressures up to 200 MPa. With the PiezoGRIN setup, it is possible to follow pressure-induced changes in subcellular structure of unstained vital mouse skeletal muscle tissue up to 200 µm below the tissue surface.
Collapse
Affiliation(s)
- Dominik Schneidereit
- Institute of Medical BiotechnologyFriedrich‐Alexander University Erlangen‐NürnbergPaul‐Gordan Strasse 3Erlangen91052Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich‐Alexander‐University Erlangen‐NürnbergErlangen91052Germany
| | - Sebastian Schürmann
- Institute of Medical BiotechnologyFriedrich‐Alexander University Erlangen‐NürnbergPaul‐Gordan Strasse 3Erlangen91052Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich‐Alexander‐University Erlangen‐NürnbergErlangen91052Germany
| | - Oliver Friedrich
- Institute of Medical BiotechnologyFriedrich‐Alexander University Erlangen‐NürnbergPaul‐Gordan Strasse 3Erlangen91052Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT)Friedrich‐Alexander‐University Erlangen‐NürnbergErlangen91052Germany
- Muscle Research Center Erlangen (MURCE)Paul‐Gordan Strasse 3Erlangen91052Germany
| |
Collapse
|
10
|
Meier G, Gapinski J, Ratajczyk M, Lettinga MP, Hirtz K, Banachowicz E, Patkowski A. Nano-viscosity of supercooled liquid measured by fluorescence correlation spectroscopy: Pressure and temperature dependence and the density scaling. J Chem Phys 2018. [DOI: 10.1063/1.5011196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- G. Meier
- ICS3, Weiche Materie, FZ-Jülich, Postfach 1913, 52428 Jülich, Germany
| | - J. Gapinski
- Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
- NanoBioMedical Centre, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - M. Ratajczyk
- Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - M. P. Lettinga
- ICS3, Weiche Materie, FZ-Jülich, Postfach 1913, 52428 Jülich, Germany
| | - K. Hirtz
- PGI-JCNS, FZ-Jülich, Postfach 1913, 52428 Jülich, Germany
| | - E. Banachowicz
- Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| | - A. Patkowski
- Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
- NanoBioMedical Centre, A. Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland
| |
Collapse
|
11
|
Nishiyama M. High-pressure microscopy for tracking dynamic properties of molecular machines. Biophys Chem 2017; 231:71-78. [DOI: 10.1016/j.bpc.2017.03.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/24/2017] [Accepted: 03/27/2017] [Indexed: 01/29/2023]
|
12
|
Schneidereit D, Vass H, Reischl B, Allen RJ, Friedrich O. Calcium Sensitive Fluorescent Dyes Fluo-4 and Fura Red under Pressure: Behaviour of Fluorescence and Buffer Properties under Hydrostatic Pressures up to 200 MPa. PLoS One 2016; 11:e0164509. [PMID: 27764134 PMCID: PMC5072694 DOI: 10.1371/journal.pone.0164509] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 09/26/2016] [Indexed: 11/18/2022] Open
Abstract
The fluorescent Ca2+ sensitive dyes Fura Red (ratiometric) and Fluo-4 (non-ratiometric) are widely utilized for the optical assessment of Ca2+ fluctuations in vitro as well as in situ. The fluorescent behavior of these dyes is strongly depends on temperature, pH, ionic strength and pressure. It is crucial to understand the response of these dyes to pressure when applying calcium imaging technologies in the field of high pressure bioscience. Therefore, we use an optically accessible pressure vessel to pressurize physiological Ca2+-buffered solutions at different fixed concentrations of free Ca2+ (1 nM to 25.6 μM) and a specified dye concentration (12 μM) to pressures of 200 MPa, and record dye fluorescence intensity. Our results show that Fluo-4 fluorescence intensity is reduced by 31% per 100 MPa, the intensity of Fura Red is reduced by 10% per 100 MPa. The mean reaction volume for the dissociation of calcium from the dye molecules [Formula: see text] is determined to -17.8 ml mol-1 for Fluo-4 and -21.3 ml mol-1 for Fura Red. Additionally, a model is presented that is used to correct for pressure-dependent changes in pH and binding affinity of Ca2+ to EGTA, as well as to determine the influence of these changes on dye fluorescence.
Collapse
Affiliation(s)
- D. Schneidereit
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuernberg, 91052 Erlangen, Bavaria, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-University Erlangen-Nuernberg, 91052 Erlangen, Bavaria, Germany
- * E-mail:
| | - H. Vass
- School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, Scotland, United Kingdom
| | - B. Reischl
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuernberg, 91052 Erlangen, Bavaria, Germany
| | - R. J. Allen
- School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, Scotland, United Kingdom
| | - O. Friedrich
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuernberg, 91052 Erlangen, Bavaria, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-University Erlangen-Nuernberg, 91052 Erlangen, Bavaria, Germany
| |
Collapse
|
13
|
Ragon M, Nguyen Thi Minh H, Guyot S, Loison P, Burgaud G, Dupont S, Beney L, Gervais P, Perrier-Cornet JM. Innovative High Gas Pressure Microscopy Chamber Designed for Biological Cell Observation. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2016; 22:63-70. [PMID: 26810277 DOI: 10.1017/s1431927615015639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An original high-pressure microscopy chamber has been designed for real-time visualization of biological cell growth during high isostatic (gas or liquid) pressure treatments up to 200 MPa. This new system is highly flexible allowing cell visualization under a wide range of pressure levels as the thickness and the material of the observation window can be easily adapted. Moreover, the design of the observation area allows different microscope objectives to be used as close as possible to the observation window. This chamber can also be temperature controlled. In this study, the resistance and optical properties of this new high-pressure chamber have been tested and characterized. The use of this new chamber was illustrated by a real-time study of the growth of two different yeast strains - Saccharomyces cerevisiae and Candida viswanathii - under high isostatic gas pressure (30 or 20 MPa, respectively). Using image analysis software, we determined the evolution of the area of colonies as a function of time, and thus calculated colony expansion rates.
Collapse
Affiliation(s)
- Mélanie Ragon
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Hue Nguyen Thi Minh
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Stéphane Guyot
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Pauline Loison
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Gaëtan Burgaud
- 2Laboratoire Universitaire de Biodiversité et Ecologie Microbienne (EA3882),IFR 148,Université Européenne de Bretagne/Université de Brest/ESMISAB,Technopole Brest-Iroise,29280 Plouzané,France
| | - Sébastien Dupont
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Laurent Beney
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Patrick Gervais
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| | - Jean-Marie Perrier-Cornet
- 1UMR A 02.102 Procédés Alimentaires et Microbiologiques,Université Bourgogne Franche-Comté/AgroSup Dijon,1 Esplanade Erasme,21000 Dijon,France
| |
Collapse
|
14
|
Abstract
Movement is a fundamental characteristic of all living things. This biogenic function is carried out by various nanometer-sized molecular machines. Molecular motor is a typical molecular machinery in which the characteristic features of proteins are integrated; these include enzymatic activity, energy conversion, molecular recognition and self-assembly. These biologically important reactions occur with the association of water molecules that surround the motors. Applied pressures can alter the intermolecular interactions between the motors and water. In this chapter we describe the development of a high-pressure microscope and a new motility assay that enables the visualization of the motility of molecular motors under conditions of high-pressure. Our results demonstrate that applied pressure dynamically changes the motility of molecular motors such as kinesin, F1-ATPase and bacterial flagellar motors.
Collapse
Affiliation(s)
- Masayoshi Nishiyama
- The Hakubi Center for Advanced Research/Institute for Integrated Cell-Material Sciences, Kyoto University, Kyoto, 606-8501, Japan,
| |
Collapse
|
15
|
Brooks NJ. Pressure effects on lipids and bio-membrane assemblies. IUCRJ 2014; 1:470-7. [PMID: 25485127 PMCID: PMC4224465 DOI: 10.1107/s2052252514019551] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 08/28/2014] [Indexed: 05/06/2023]
Abstract
Membranes are amongst the most important biological structures; they maintain the fundamental integrity of cells, compartmentalize regions within them and play an active role in a wide range of cellular processes. Pressure can play a key role in probing the structure and dynamics of membrane assemblies, and is also critical to the biology and adaptation of deep-sea organisms. This article presents an overview of the effect of pressure on the mesostructure of lipid membranes, bilayer organization and lipid-protein assemblies. It also summarizes recent developments in high-pressure structural instrumentation suitable for experiments on membranes.
Collapse
Affiliation(s)
- Nicholas J. Brooks
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, England
| |
Collapse
|
16
|
Okuno D, Nishiyama M, Noji H. Single-molecule analysis of the rotation of F₁-ATPase under high hydrostatic pressure. Biophys J 2014; 105:1635-42. [PMID: 24094404 DOI: 10.1016/j.bpj.2013.08.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/29/2013] [Accepted: 08/20/2013] [Indexed: 02/06/2023] Open
Abstract
F1-ATPase is the water-soluble part of ATP synthase and is an ATP-driven rotary molecular motor that rotates the rotary shaft against the surrounding stator ring, hydrolyzing ATP. Although the mechanochemical coupling mechanism of F1-ATPase has been well studied, the molecular details of individual reaction steps remain unclear. In this study, we conducted a single-molecule rotation assay of F1 from thermophilic bacteria under various pressures from 0.1 to 140 MPa. Even at 140 MPa, F1 actively rotated with regular 120° steps in a counterclockwise direction, showing high conformational stability and retention of native properties. Rotational torque was also not affected. However, high hydrostatic pressure induced a distinct intervening pause at the ATP-binding angles during continuous rotation. The pause was observed under both ATP-limiting and ATP-saturating conditions, suggesting that F1 has two pressure-sensitive reactions, one of which is evidently ATP binding. The rotation assay using a mutant F1(βE190D) suggested that the other pressure-sensitive reaction occurs at the same angle at which ATP binding occurs. The activation volumes were determined from the pressure dependence of the rate constants to be +100 Å(3) and +88 Å(3) for ATP binding and the other pressure-sensitive reaction, respectively. These results are discussed in relation to recent single-molecule studies of F1 and pressure-induced protein unfolding.
Collapse
Affiliation(s)
- Daichi Okuno
- Laboratory for Cell Dynamics Observation, Quantitative Biology Center, Riken, Furuedai, Suita, Osaka, Japan
| | | | | |
Collapse
|
17
|
Seo M, Koyama S, Toyofuku T, Kojima S, Watanabe H. Determination of extremely high pressure tolerance of brine shrimp larvae by using a new pressure chamber system. Zoolog Sci 2013; 30:919-23. [PMID: 24224473 DOI: 10.2108/zsj.30.919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hydrostatic pressure is the only one of a range of environmental parameters (water temperature, salinity, light availability, and so on) that increases in proportion with depth. Pressure tolerance is therefore essential to understand the foundation of populations and current diversity of faunal compositions at various depths. In the present study, we used a newly developed pressure chamber system to examine changes in larval activity of the salt-lake crustacean, Artemia franciscana, in response to a range of hydrostatic pressures. We showed that A. franciscana larvae were able to survive for a short period at pressures of ≤ 60 MPa (approximately equal to the pressure of 6000 m deep). At a pressure of > 20 MPa, larval motor ability was suppressed, but not lost. Meanwhile, at a pressure of > 40 MPa, some of the larval motor ability was lost without recovery after decompression. For all experiments, discordance of movement and timing between right and left appendages, was observed at pressures of > 20 MPa. Our results indicate that the limit of pressure for sustaining active behavior of A. franciscana larvae is ∼20 MPa, whereas the limit of pressure for survival is within the range 30-60 MPa. Thus, members of the genus Artemia possess the ability to resist a higher range of pressures than their natural habitat depth. Our findings demonstrated an example of an organism capable of invading deeper environment in terms of physical pressure tolerance, and indicate the need and importance of pressure study as an experimental method.
Collapse
Affiliation(s)
- Mihye Seo
- 1 Atmosphere and Ocean Research Institute, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8564, Japan
| | | | | | | | | |
Collapse
|
18
|
Black SL, Dawson A, Ward FB, Allen RJ. Genes required for growth at high hydrostatic pressure in Escherichia coli K-12 identified by genome-wide screening. PLoS One 2013; 8:e73995. [PMID: 24040140 PMCID: PMC3770679 DOI: 10.1371/journal.pone.0073995] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 08/01/2013] [Indexed: 11/28/2022] Open
Abstract
Despite the fact that much of the global microbial biosphere is believed to exist in high pressure environments, the effects of hydrostatic pressure on microbial physiology remain poorly understood. We use a genome-wide screening approach, combined with a novel high-throughput high-pressure cell culture method, to investigate the effects of hydrostatic pressure on microbial physiology in vivo. The Keio collection of single-gene deletion mutants in Escherichia coli K-12 was screened for growth at a range of pressures from 0.1 MPa to 60 MPa. This led to the identification of 6 genes, rodZ, holC, priA, dnaT, dedD and tatC, whose products were required for growth at 30 MPa and a further 3 genes, tolB, rffT and iscS, whose products were required for growth at 40 MPa. Our results support the view that the effects of pressure on cell physiology are pleiotropic, with DNA replication, cell division, the cytoskeleton and cell envelope physiology all being potential failure points for cell physiology during growth at elevated pressure.
Collapse
Affiliation(s)
- S. Lucas Black
- SUPA School of Physics and Astronomy, University of Edinburgh, Edinburgh, Midlothian, United Kingdom
- Institute of Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, Midlothian, United Kingdom
| | - Angela Dawson
- SUPA School of Physics and Astronomy, University of Edinburgh, Edinburgh, Midlothian, United Kingdom
| | - F. Bruce Ward
- Institute of Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, Midlothian, United Kingdom
| | - Rosalind J. Allen
- SUPA School of Physics and Astronomy, University of Edinburgh, Edinburgh, Midlothian, United Kingdom
- * E-mail:
| |
Collapse
|
19
|
High hydrostatic pressure induces counterclockwise to clockwise reversals of the Escherichia coli flagellar motor. J Bacteriol 2013; 195:1809-14. [PMID: 23417485 DOI: 10.1128/jb.02139-12] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The bacterial flagellar motor is a reversible rotary machine that rotates a left-handed helical filament, allowing bacteria to swim toward a more favorable environment. The direction of rotation reverses from counterclockwise (CCW) to clockwise (CW), and vice versa, in response to input from the chemotaxis signaling circuit. CW rotation is normally caused by binding of the phosphorylated response regulator CheY (CheY-P), and strains lacking CheY are typically locked in CCW rotation. The detailed mechanism of switching remains unresolved because it is technically difficult to regulate the level of CheY-P within the concentration range that produces flagellar reversals. Here, we demonstrate that high hydrostatic pressure can induce CW rotation even in the absence of CheY-P. The rotation of single flagellar motors in Escherichia coli cells with the cheY gene deleted was monitored at various pressures and temperatures. Application of >120 MPa pressure induced a reversal from CCW to CW at 20°C, although at that temperature, no motor rotated CW at ambient pressure (0.1 MPa). At lower temperatures, pressure-induced changes in direction were observed at pressures of <120 MPa. CW rotation increased with pressure in a sigmoidal fashion, as it does in response to increasing concentrations of CheY-P. Application of pressure generally promotes the formation of clusters of ordered water molecules on the surfaces of proteins. It is possible that hydration of the switch complex at high pressure induces structural changes similar to those caused by the binding of CheY-P.
Collapse
|
20
|
Microscopic analysis of bacterial motility at high pressure. Biophys J 2012; 102:1872-80. [PMID: 22768943 DOI: 10.1016/j.bpj.2012.03.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 03/07/2012] [Accepted: 03/12/2012] [Indexed: 12/13/2022] Open
Abstract
The bacterial flagellar motor is a molecular machine that converts an ion flux to the rotation of a helical flagellar filament. Counterclockwise rotation of the filaments allows them to join in a bundle and propel the cell forward. Loss of motility can be caused by environmental factors such as temperature, pH, and solvation. Hydrostatic pressure is also a physical inhibitor of bacterial motility, but the detailed mechanism of this inhibition is still unknown. Here, we developed a high-pressure microscope that enables us to acquire high-resolution microscopic images, regardless of applied pressures. We also characterized the pressure dependence of the motility of swimming Escherichia coli cells and the rotation of single flagellar motors. The fraction and speed of swimming cells decreased with increased pressure. At 80 MPa, all cells stopped swimming and simply diffused in solution. After the release of pressure, most cells immediately recovered their initial motility. Direct observation of the motility of single flagellar motors revealed that at 80 MPa, the motors generate torque that should be sufficient to join rotating filaments in a bundle. The discrepancy in the behavior of free swimming cells and individual motors could be due to the applied pressure inhibiting the formation of rotating filament bundles that can propel the cell body in an aqueous environment.
Collapse
|
21
|
Bacterial motility measured by a miniature chamber for high-pressure microscopy. Int J Mol Sci 2012; 13:9225-9239. [PMID: 22942763 PMCID: PMC3430294 DOI: 10.3390/ijms13079225] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/03/2012] [Accepted: 07/10/2012] [Indexed: 01/13/2023] Open
Abstract
Hydrostatic pressure is one of the physical stimuli that characterize the environment of living matter. Many microorganisms thrive under high pressure and may even physically or geochemically require this extreme environmental condition. In contrast, application of pressure is detrimental to most life on Earth; especially to living organisms under ambient pressure conditions. To study the mechanism of how living things adapt to high-pressure conditions, it is necessary to monitor directly the organism of interest under various pressure conditions. Here, we report a miniature chamber for high-pressure microscopy. The chamber was equipped with a built-in separator, in which water pressure was properly transduced to that of the sample solution. The apparatus developed could apply pressure up to 150 MPa, and enabled us to acquire bright-field and epifluorescence images at various pressures and temperatures. We demonstrated that the application of pressure acted directly and reversibly on the swimming motility of Escherichia coli cells. The present technique should be applicable to a wide range of dynamic biological processes that depend on applied pressures.
Collapse
|
22
|
White KA, Schofield AB, Wormald P, Tavacoli JW, Binks BP, Clegg PS. Inversion of particle-stabilized emulsions of partially miscible liquids by mild drying of modified silica particles. J Colloid Interface Sci 2011; 359:126-35. [DOI: 10.1016/j.jcis.2011.03.074] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 03/21/2011] [Accepted: 03/22/2011] [Indexed: 11/26/2022]
|
23
|
Jeworrek C, Steitz R, Czeslik C, Winter R. High pressure cell for neutron reflectivity measurements up to 2500 bar. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:025106. [PMID: 21361632 DOI: 10.1063/1.3553392] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The design of a high pressure (HP) cell for neutron reflectivity experiments is described. The cell can be used to study solid-liquid interfaces under pressures up to 2500 bar (250 MPa). The sample interface is based on a thick silicon block with an area of about 14 cm(2). This area is in contact with the sample solution which has a volume of only 6 cm(3). The sample solution is separated from the pressure transmitting medium, water, by a thin flexible polymer membrane. In addition, the HP cell can be temperature-controlled by a water bath in the range 5-75°C. By using an aluminum alloy as window material, the assembled HP cell provides a neutron transmission as high as 41%. The maximum angle of incidence that can be used in reflectivity experiments is 7.5°. The large accessible pressure range and the low required volume of the sample solution make this HP cell highly suitable for studying pressure-induced structural changes of interfacial proteins, supported lipid membranes, and, in general, biomolecular systems that are available in small quantities, only. To illustrate the performance of the HP cell, we present neutron reflectivity data of a protein adsorbate under high pressure and a lipid film which undergoes several phase transitions upon pressurization.
Collapse
Affiliation(s)
- Christoph Jeworrek
- Physical Chemistry I-Biophysical Chemistry, Technische Universität Dortmund, Dortmund, Germany
| | | | | | | |
Collapse
|
24
|
Brooks NJ, Ces O, Templer RH, Seddon JM. Pressure effects on lipid membrane structure and dynamics. Chem Phys Lipids 2010; 164:89-98. [PMID: 21172328 DOI: 10.1016/j.chemphyslip.2010.12.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 12/07/2010] [Accepted: 12/09/2010] [Indexed: 11/30/2022]
Abstract
The effect of hydrostatic pressure on lipid structure and dynamics is highly important as a tool in biophysics and bio-technology, and in the biology of deep sea organisms. Despite its importance, high hydrostatic pressure remains significantly less utilised than other thermodynamic variables such as temperature and chemical composition. Here, we give an overview of some of the theoretical aspects which determine lipid behaviour under pressure and the techniques and technology available to study these effects. We also summarise several recent experiments which highlight the information available from these approaches.
Collapse
Affiliation(s)
- Nicholas J Brooks
- Membrane Biophysics Platform and Institute of Chemical Biology, Department of Chemistry, Imperial College London, South Kensington Campus, UK
| | | | | | | |
Collapse
|