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Hanashima S, Fukuda N, Malabed R, Murata M, Kinoshita M, Greimel P, Hirabayashi Y. β-Glucosylation of cholesterol reduces sterol-sphingomyelin interactions. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1863:183496. [PMID: 33130096 DOI: 10.1016/j.bbamem.2020.183496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/10/2020] [Accepted: 10/16/2020] [Indexed: 12/24/2022]
Abstract
Cholesteryl-β-D-glucoside (ChoGlc) is a mammalian glycolipid that is expressed in brain tissue. The effects of glucosylation on the ordering and lipid interactions of cholesterol (Cho) were examined in membranes composed of N-stearoyl sphingomyelin (SSM), which is abundant in the brain, and to investigate the possible molecular mechanism involved in these interactions. Differential scanning calorimetry revealed that ChoGlc was miscible with SSM in a similar extent of Cho. Solid-state 2H NMR of deuterated SSM and fluorescent anisotropy using 1,6-diphenylhexatriene demonstrated that the glucosylation of Cho significantly reduced the effect of the sterol tetracyclic core on the ordering of SSM chains. The orientation of the sterol core was further examined by solid-state NMR analysis of deuterated and fluorinated ChoGlc analogues. ChoGlc had a smaller tilt angle between the long molecular axis (C3-C17) and the membrane normal than Cho in SSM bilayers, and the fluctuations in the tilt angle were largely unaffected by temperature-dependent mobility changes of SSM acyl chains. This orientation of the sterol core of ChoGlc leads to reduce sterol-SSM interactions. The MD simulation results suggested that the Glc moiety perturbs the SSM-sterol interactions, which reduces the umbrella effect of the phosphocholine headgroup because the hydrophilic glucose moiety resides at the same depth as an SSM amide group. These differences between ChoGlc and Cho also weaken the SSM-ChoGlc interactions. Thus, the distribution and localization of Cho and ChoGlc possibly control the stability of sphingomyelin-based domains that transiently occur at specific locations in biological membranes.
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Affiliation(s)
- Shinya Hanashima
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
| | - Nanami Fukuda
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Raymond Malabed
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Michio Murata
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
| | - Msanao Kinoshita
- Department of Chemistry, Graduate School of Science, Kyushu University, Fukuoka, Fukuoka 819-0395, Japan
| | - Peter Greimel
- Laboratory for Cell Function Dynamics, Brain Science Institute, RIKEN Institute, Wako, Saitama 351-0198, Japan
| | - Yoshio Hirabayashi
- RIKEN Cluster for Pioneering Research, RIKEN, Wako, Saitama 351-0198, Japan; Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
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2
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Johnston EJ, Moses T, Rosser SJ. The wide-ranging phenotypes of ergosterol biosynthesis mutants, and implications for microbial cell factories. Yeast 2020; 37:27-44. [PMID: 31800968 DOI: 10.1002/yea.3452] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/06/2019] [Accepted: 12/02/2019] [Indexed: 01/09/2023] Open
Abstract
Yeast strains have been used extensively as robust microbial cell factories for the production of bulk and fine chemicals, including biofuels (bioethanol), complex pharmaceuticals (antimalarial drug artemisinin and opioid pain killers), flavours, and fragrances (vanillin, nootkatone, and resveratrol). In many cases, it is of benefit to suppress or modify ergosterol biosynthesis during strain engineering, for example, to increase thermotolerance or to increase metabolic flux through an alternate pathway. However, the impact of modifying ergosterol biosynthesis on engineered strains is discussed sparsely in literature, and little attention has been paid to the implications of these modifications on the general health and well-being of yeast. Importantly, yeast with modified sterol content exhibit a wide range of phenotypes, including altered organization and dynamics of plasma membrane, altered susceptibility to chemical treatment, increased tolerance to high temperatures, and reduced tolerance to other stresses such as high ethanol, salt, and solute concentrations. Here, we review the wide-ranging phenotypes of viable Saccharomyces cerevisiae strains with altered sterol content and discuss the implications of these for yeast as microbial cell factories.
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Affiliation(s)
- Emily J Johnston
- School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Tessa Moses
- School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Susan J Rosser
- School of Biological Sciences, University of Edinburgh, Edinburgh, UK
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3
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Lau S, Stanhope N, Griffin J, Hughes E, Middleton DA. Drug orientations within statin-loaded lipoprotein nanoparticles by 19F solid-state NMR. Chem Commun (Camb) 2019; 55:13287-13290. [PMID: 31626247 DOI: 10.1039/c9cc05344a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
NMR measurements of 19F chemical shift anisotropy and 1H-19F dipolar couplings provide unprecedented information on the molecular orientations of two fluorine-containing statin drugs within the heterogeneous environment of reconstituted high-density lipoprotein (rHDL) nanoparticles, a drug delivery system under clinical investigation.
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Affiliation(s)
- Sophie Lau
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK.
| | - Naomi Stanhope
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK.
| | - John Griffin
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK.
| | - Eleri Hughes
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK.
| | - David A Middleton
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK.
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4
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Wu D, Carillo KJD, Tsai S, Shie J, Tzou DM. Solid‐state nuclear magnetic resonance investigation of neurosteroid compounds and magnesium interactions. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Danni Wu
- Chemical Engineering Department, National Taiwan University of Science and Technology Taipei Taiwan
| | - Kathleen Joyce D. Carillo
- Taiwan International Graduate Program of Sustainable Chemical Science and Technology Taipei Taiwan
- Department of Applied ChemistryNational Chiao Tung University Hsinchu Taiwan
- Institute of ChemistryAcademia Sinica, Nankang Taipei Taiwan
| | - Shen‐Long Tsai
- Chemical Engineering Department, National Taiwan University of Science and Technology Taipei Taiwan
| | - Jiun‐Jie Shie
- Taiwan International Graduate Program of Sustainable Chemical Science and Technology Taipei Taiwan
- Institute of ChemistryAcademia Sinica, Nankang Taipei Taiwan
| | - Der‐Lii M. Tzou
- Institute of ChemistryAcademia Sinica, Nankang Taipei Taiwan
- Department of Applied ChemistryNational Chia‐Yi University Chia‐Yi Taiwan
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5
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Hughes E, Griffin JM, Coogan MP, Middleton DA. Average orientation of a fluoroaromatic molecule in lipid bilayers from DFT-informed NMR measurements of 1H- 19F dipolar couplings. Phys Chem Chem Phys 2018; 20:18207-18215. [PMID: 29915824 PMCID: PMC6042476 DOI: 10.1039/c8cp01064a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 05/28/2018] [Indexed: 12/11/2022]
Abstract
Fluorine is often incorporated into the aromatic moieties of synthetic bioactive molecules such as pharmaceuticals and disease diagnostics in order to alter their physicochemical properties. Fluorine substitution may increase a molecule's lipophilicity, thereby enabling its diffusion across cell membranes to enhance bioavailability or to exert a direct physiological effect from within the lipid bilayer. Understanding the structure, dynamics and orientation of fluoroaromatic molecules in lipid bilayers can provide useful insight into the effect of fluorine on their mode of action, and their interactions with membrane-embedded targets or efflux proteins. Here we demonstrate that NMR measurements of 19F chemical shift anisotropy combined with 1H-19F dipolar coupling measurements together report on the average orientation of a lipophilic fluoroaromatic molecule, 4-(6-fluorobenzo[d]thiazol-2-yl)aniline (FBTA), rapidly rotating within a lipid bilayer. The 19F chemical shift tensor orientation in the molecular frame was calculated by density functional theory and corroborated by 1H-19F PISEMA NMR. It was then possible to analyse the line shapes of proton-coupled and proton-decoupled 19F spectra of FBTA in chain perdeuterated dimyristoylphosphatidylcholine (DMPC-d54) bilayers to restrict the average axis of molecular reorientation of FBTA in the bilayer to a limited range orientations. This approach, which exploits the high sensitivity and gyromagnetic ratios of 19F and 1H, will be useful for comparing the membrane properties of related bioactive fluoroaromatic compounds.
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Affiliation(s)
- Eleri Hughes
- Department of Chemistry
, Lancaster University
,
Lancaster
, LA1 4YB
, UK
.
; Tel: +44 1524 594328
| | - John M. Griffin
- Department of Chemistry
, Lancaster University
,
Lancaster
, LA1 4YB
, UK
.
; Tel: +44 1524 594328
| | - Michael P. Coogan
- Department of Chemistry
, Lancaster University
,
Lancaster
, LA1 4YB
, UK
.
; Tel: +44 1524 594328
| | - David A. Middleton
- Department of Chemistry
, Lancaster University
,
Lancaster
, LA1 4YB
, UK
.
; Tel: +44 1524 594328
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6
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Venditti A, Frezza C, Sciubba F, Serafini M, Bianco A. Primary and secondary metabolites of an European edible mushroom and its nutraceutical value: Suillus bellinii (Inzenga) Kuntze. Nat Prod Res 2016; 31:1910-1919. [DOI: 10.1080/14786419.2016.1267731] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Claudio Frezza
- Dipartimento di Biologia Ambientale, Università di Roma “La Sapienza”, Roma, Italy
| | - Fabio Sciubba
- Dipartimento di Chimica, Università di Roma “La Sapienza”, Roma, Italy
| | - Mauro Serafini
- Dipartimento di Biologia Ambientale, Università di Roma “La Sapienza”, Roma, Italy
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7
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Carillo KD, Arco S, Wang CC, Tzou DLM. Solid-state NMR investigation of effect of fluorination and methylation on prednisolone conformation. Steroids 2015; 104:263-9. [PMID: 26476185 DOI: 10.1016/j.steroids.2015.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Revised: 09/11/2015] [Accepted: 10/12/2015] [Indexed: 10/22/2022]
Abstract
Prednisolone (Prd) is a polymorphous synthetic corticosteroid that has three crystalline forms mediated by different solvents. In this study, we have demonstrated that solid-state {(1)H}(13)C cross-polarization/magic angle spinning (CP/MAS) NMR spectroscopy is able to resolve the effects of methylation and fluorination on the conformation of the steroidal rings in Prd. Two compounds were chosen for the study, 6-α-methylprednisolone (Prd-6M) and 6-α-fluoroprednisolone (Prd-6F). The (13)C signals of Prd-6F showed primarily doublet patterns, with splittings of 40-380 Hz, indicating multiple ring conformations, whereas the (13)C signals of Prd and Prd-6M exhibited a singlet pattern, indicating a unique conformation. Using evidence from chemical shift deviation and anisotropy analysis, we have demonstrated by solid-state NMR that Prd-6F adopts two different steroidal ring conformations that are different from that of Prd-6M, and less similar to that of unsubstituted Prd.
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Affiliation(s)
- Kathleen D Carillo
- University of the Philippines Diliman, Diliman, Quezon City 1100, Philippines; Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Susan Arco
- University of the Philippines Diliman, Diliman, Quezon City 1100, Philippines
| | - Cheng-Chung Wang
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Der-Lii M Tzou
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC.
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8
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Hansen SK, Bertelsen K, Paaske B, Nielsen NC, Vosegaard T. Solid-state NMR methods for oriented membrane proteins. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2015; 88-89:48-85. [PMID: 26282196 DOI: 10.1016/j.pnmrs.2015.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/27/2015] [Indexed: 06/04/2023]
Abstract
Oriented-sample solid-state NMR represents one of few experimental methods capable of characterising the membrane-bound conformation of proteins in the cell membrane. Since the technique was developed 25 years ago, the technique has been applied to study the structure of helix bundle membrane proteins and antimicrobial peptides, characterise protein-lipid interactions, and derive information on dynamics of the membrane anchoring of membrane proteins. We will review the major developments in various aspects of oriented-sample solid-state NMR, including sample-preparation methods, pulse sequences, theory required to interpret the experiments, perspectives for and guidelines to new experiments, and a number of representative applications.
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Affiliation(s)
- Sara K Hansen
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Kresten Bertelsen
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Berit Paaske
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Niels Chr Nielsen
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Thomas Vosegaard
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
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9
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Gater DL, Saurel O, Iordanov I, Liu W, Cherezov V, Milon A. Two classes of cholesterol binding sites for the β2AR revealed by thermostability and NMR. Biophys J 2015; 107:2305-12. [PMID: 25418299 DOI: 10.1016/j.bpj.2014.10.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 09/19/2014] [Accepted: 10/09/2014] [Indexed: 11/24/2022] Open
Abstract
Cholesterol binding to G protein-coupled receptors (GPCRs) and modulation of their activities in membranes is a fundamental issue for understanding their function. Despite the identification of cholesterol binding sites in high-resolution x-ray structures of the ?2 adrenergic receptor (β2AR) and other GPCRs, the binding affinity of cholesterol for this receptor and exchange rates between the free and bound cholesterol remain unknown. In this study we report the existence of two classes of cholesterol binding sites in β2AR. By analyzing the β2AR unfolding temperature in lipidic cubic phase (LCP) as a function of cholesterol concentration we observed high-affinity cooperative binding of cholesterol with sub-nM affinity constant. In contrast, saturation transfer difference (STD) NMR experiments revealed the existence of a second class of cholesterol binding sites, in fast exchange on the STD NMR timescale. Titration of the STD signal as a function of cholesterol concentration provided a lower limit of 100 mM for their dissociation constant. However, these binding sites are specific for both cholesterol and β2AR, as shown with control experiments using ergosterol and a control membrane protein (KpOmpA). We postulate that this specificity is mediated by the high-affinity bound cholesterol molecules and propose the formation of transient cholesterol clusters around the high-affinity binding sites.
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Affiliation(s)
- Deborah L Gater
- Institute of Pharmacology and Structural Biology - UMR 5089, CNRS and Université de Toulouse - UPS, 205 Route de Narbonne, 31077 Toulouse, France; Khalifa University of Science, Technology and Research, P.O. Box 127788, Abu Dhabi, UAE
| | - Olivier Saurel
- Institute of Pharmacology and Structural Biology - UMR 5089, CNRS and Université de Toulouse - UPS, 205 Route de Narbonne, 31077 Toulouse, France
| | - Iordan Iordanov
- Institute of Pharmacology and Structural Biology - UMR 5089, CNRS and Université de Toulouse - UPS, 205 Route de Narbonne, 31077 Toulouse, France
| | - Wei Liu
- Department of Integrative Structural and Computational Biology, Scripps Research Institute, La Jolla, California
| | - Vadim Cherezov
- Department of Integrative Structural and Computational Biology, Scripps Research Institute, La Jolla, California.
| | - Alain Milon
- Institute of Pharmacology and Structural Biology - UMR 5089, CNRS and Université de Toulouse - UPS, 205 Route de Narbonne, 31077 Toulouse, France.
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10
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Wang D, Chen M, Chein RJ, Ching WM, Hung CH, Tzou DLM. Cation ion specifically induces a conformational change in trans-dehydroandrosterone - a solid-state NMR study. Steroids 2015; 96:73-80. [PMID: 25637678 DOI: 10.1016/j.steroids.2015.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 01/09/2015] [Accepted: 01/19/2015] [Indexed: 11/23/2022]
Abstract
In this work, we demonstrated that calcium (Ca(+2)) is able to induce a conformational change in trans-dehydroandrosterone (DHEA). To this respect, solid-state NMR spectroscopy was applied to a series of DHEA molecules that were incubated with Ca(+2) under different concentrations. The high-resolution (13)C NMR spectra of the DHEA/Ca(+2) mixtures exhibited two distinct sets of signals; one was attributed to DHEA in the free form, and the second set was due to the DHEA/Ca(+2) complex. Based on chemical shift isotropy and anisotropy analyses, we postulated that Ca(+2) might have associated with the oxygen attached to C17 via a lone-pair of electrons, which induced a conformational change in DHEA. Apart from Ca(+2), we also incubated DHEA with magnesium (Mg(+2)) to determine whether Mg(+2) was able to interact with DHEA in a similar manner to Ca(+2). We found that Mg(+2) was able to induce a conformational change in DHEA deviated from that of Ca(+2). These solid-state NMR observations indicate that DHEA is able to interact with cations, such as Mg(+2) and Ca(+2), with specificity.
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Affiliation(s)
- Darong Wang
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Meiman Chen
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Rong-Jie Chein
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Wei-Min Ching
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Chen-Hsiung Hung
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC
| | - Der-Lii M Tzou
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan, ROC.
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11
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Bertelsen K, Dorosz J, Hansen SK, Nielsen NC, Vosegaard T. Mechanisms of peptide-induced pore formation in lipid bilayers investigated by oriented 31P solid-state NMR spectroscopy. PLoS One 2012; 7:e47745. [PMID: 23094079 PMCID: PMC3475706 DOI: 10.1371/journal.pone.0047745] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 09/17/2012] [Indexed: 01/30/2023] Open
Abstract
There is a considerable interest in understanding the function of antimicrobial peptides (AMPs), but the details of their mode of action is not fully understood. This motivates extensive efforts in determining structural and mechanistic parameters for AMP’s interaction with lipid membranes. In this study we show that oriented-sample 31P solid-state NMR spectroscopy can be used to probe the membrane perturbations and -disruption by AMPs. For two AMPs, alamethicin and novicidin, we observe that the majority of the lipids remain in a planar bilayer conformation but that a number of lipids are involved in the peptide anchoring. These lipids display reduced dynamics. Our study supports previous studies showing that alamethicin adopts a transmembrane arrangement without significant disturbance of the surrounding lipids, while novicidin forms toroidal pores at high concentrations leading to more extensive membrane disturbance.
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Affiliation(s)
- Kresten Bertelsen
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, University of Aarhus, Aarhus, Denmark
| | - Jerzy Dorosz
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, University of Aarhus, Aarhus, Denmark
| | - Sara Krogh Hansen
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, University of Aarhus, Aarhus, Denmark
| | - Niels Chr. Nielsen
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, University of Aarhus, Aarhus, Denmark
- * E-mail: (NCN); (TV)
| | - Thomas Vosegaard
- Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, University of Aarhus, Aarhus, Denmark
- Department of Engineering, School of Engineering, University of Aarhus, Aarhus, Denmark
- * E-mail: (NCN); (TV)
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12
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Arpha K, Phosri C, Suwannasai N, Mongkolthanaruk W, Sodngam S. Astraodoric acids A-D: new lanostane triterpenes from edible mushroom Astraeus odoratus and their anti-Mycobacterium tuberculosis H37Ra and cytotoxic activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:9834-9841. [PMID: 22957940 DOI: 10.1021/jf302433r] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Tuberculosis (TB) is one of the chronic infectious diseases caused by Mycobacterium tuberculosis that causes about 2-3 million deaths per year. Isoniazid and rifampicin are examples of first line drugs used for TB treatment; however, they are potentially hepatotoxic. More effective and safer drugs are urgently needed, especially from natural products. Basidiomycete mushrooms are known as important sources of pharmaceutically active metabolites including an anti-TB agent. In this work, the chemical constituents of the edible mushroom Astraeus odoratus were isolated and investigated for antibacterial activity against M. tuberculosis H(37)Ra. The cytotoxic activity against cancerous cell lines was also evaluated. Four new lanostane triterpenes, astraodoric acids A-D, and new 5-hydroxyhypaphorine have been isolated together with four known compounds. The structures were elucidated by NMR spectroscopic methods, HR-ESI-MS results, and X-ray crystallographic analysis. Astraodoric acids A and B exhibited moderate antibacterial (MICs of 50 and 25 μg/mL) and cytotoxic activities (IC(50) values of 34.69 and 18.57 μg/mL against KB and 19.99 and 48.35 μg/mL against NCI-H187), respectively. The results of this study show that A. odoratus could be a significant natural source for safer antitubercular and anticancer agents.
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Affiliation(s)
- Kittibhorn Arpha
- Natural Products Research Unit, Centre of Excellence for Innovation in Chemistry (PERCH-CIC), Department of Chemistry, Faculty of Science, Khon Kaen University , Khon Kaen, 40002, Thailand
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13
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Umegawa Y, Nakagawa Y, Tahara K, Tsuchikawa H, Matsumori N, Oishi T, Murata M. Head-to-tail interaction between amphotericin B and ergosterol occurs in hydrated phospholipid membrane. Biochemistry 2011; 51:83-9. [PMID: 22129239 DOI: 10.1021/bi2012542] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amphotericin B (AmB) is thought to exert its antifungal activity by forming an ion-channel assembly in the presence of ergosterol. In the present study we aimed to elucidate the mode of molecular interactions between AmB and ergosterol in hydrated phospholipid bilayers using the rotational echo double resonance (REDOR) spectra. We first performed (13)C{(19)F}REDOR experiments with C14-(19)F-labeled AmB and biosynthetically (13)C-labeled ergosterol and implied that both "head-to-head" and "head-to-tail" orientations occur for AmB-ergosterol interaction in the bilayers. To further confirm the "head-to-tail" pairing, (13)C-labeled ergosterol at the dimethyl terminus (C26/C27) was synthesized and subjected to the REDOR measurements. The spectra unambiguously demonstrated the presence of a "head-to-tail" orientation for AmB-ergosterol pairing. In order to obtain information on the position of the dimethyl terminus of ergosterol in membrane, (13)C{(31)P}REDOR were carried out using the labeled ergosterol and the phosphorus atom of a POPC headgroup. Significant REDOR dephasing was observed at the C26/C27 signal of ergosterol in the presence of AmB, but not in the absence of AmB, clearly indicating that the side-chain terminus of ergosterol in the AmB complex comes close to the bilayer surface.
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Affiliation(s)
- Yuichi Umegawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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14
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Zorin V, Ciesielski F, Griffin DC, Rittig M, Bonev BB. Heteronuclear chemical shift correlation and J-resolved MAS NMR spectroscopy of lipid membranes. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:925-934. [PMID: 20941803 DOI: 10.1002/mrc.2690] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Direct observation of J-couplings remains a challenge in high-resolution solid-state NMR. In some cases, it is possible to use Lee-Goldburg (LG) homonuclear decoupling during rare spin observation in MAS NMR correlation spectroscopy of lipid membranes to obtain J-resolved spectra in the direct dimension. In one simple implementation, a wide line separation-type (13)C-(1)H HETCOR can provide high-resolution (1)H/(13)C spectra, which are J-resolved in both dimensions. Coupling constants, (1)J(HC), obtained from (1)H doublets, can be compared with scaled (1)J(θ)(CH)-values obtained from the (13)C multiplets to assess the LG efficiency and scaling factor. The use of homonuclear decoupling during proton evolution, LG-HETCOR-LG, can provide J-values, at least in the rare spin dimension, and allows measurements in less mobile membrane environments. The LG-decoupled spectroscopic approach is demonstrated on pure dioleoylphosphatidylcholine (DOPC) membranes and used to investigate lipid mixtures of DOPC/cholesterol and DOPC/cholesterol/sphingomyelin.
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Mannock DA, Lewis RN, McMullen TP, McElhaney RN. The effect of variations in phospholipid and sterol structure on the nature of lipid–sterol interactions in lipid bilayer model membranes. Chem Phys Lipids 2010; 163:403-48. [DOI: 10.1016/j.chemphyslip.2010.03.011] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 03/13/2010] [Accepted: 03/27/2010] [Indexed: 01/30/2023]
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Mannock DA, Lewis RN, McElhaney RN. A calorimetric and spectroscopic comparison of the effects of ergosterol and cholesterol on the thermotropic phase behavior and organization of dipalmitoylphosphatidylcholine bilayer membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2010; 1798:376-88. [DOI: 10.1016/j.bbamem.2009.09.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2009] [Revised: 08/06/2009] [Accepted: 09/06/2009] [Indexed: 11/16/2022]
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17
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Rougier L, Milon A, Réat V, Jolibois F. Modelling the influence of hydrogen bond network on chemical shielding tensors description. GIAO-DFT study of WALP23 transmembrane α-helix as a test case. Phys Chem Chem Phys 2010; 12:6999-7008. [DOI: 10.1039/b923883b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Blanc F, Basset JM, Copéret C, Sinha A, Tonzetich ZJ, Schrock RR, Solans-Monfort X, Clot E, Eisenstein O, Lesage A, Emsley L. Dynamics of Silica-Supported Catalysts Determined by Combining Solid-State NMR Spectroscopy and DFT Calculations. J Am Chem Soc 2008; 130:5886-900. [DOI: 10.1021/ja077749v] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Frédéric Blanc
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Jean-Marie Basset
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Christophe Copéret
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Amritanshu Sinha
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Zachary J. Tonzetich
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Richard R. Schrock
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Xavier Solans-Monfort
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Eric Clot
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Odile Eisenstein
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Anne Lesage
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
| | - Lyndon Emsley
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (UMR 5265), Chimie Organométallique de Surface, ESCPE Lyon, Université de Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France, Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachussets 02139, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain, Institut Charles Gerhardt Montpellier (UMR 5253, CNRS, UM2, UM1, ENSCM), Université Montpellier 2, cc 1501, Place E. Bataillon, F-34095
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Shrivastava S, Chattopadhyay A. Influence of cholesterol and ergosterol on membrane dynamics using different fluorescent reporter probes. Biochem Biophys Res Commun 2007; 356:705-10. [PMID: 17374525 DOI: 10.1016/j.bbrc.2007.03.032] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2007] [Accepted: 03/05/2007] [Indexed: 11/17/2022]
Abstract
Ergosterol is an evolutionary precursor of cholesterol and is the major sterol present in lower eukaryotes. Although detailed biophysical characterization of the effect of cholesterol on membranes is well documented, the effect of ergosterol on the organization and dynamics of membranes is still at a very early stage. We have monitored the effect of cholesterol and ergosterol on the dynamic properties of both fluid (POPC) and gel (DPPC) phase membranes utilizing fluorescent reporter probes pyrene and TMA-DPH. These results show, for the first time, the important differences on the effect of cholesterol and ergosterol in short-range ordering (reported by TMA-DPH) and long-range dynamics (reported by pyrene). In addition, pyrene vibronic peak intensity ratio provides information on polarity of the microenvironment experienced by the probe. These novel results are relevant in the context of membrane domains in ergosterol-containing organisms such as Drosophila which maintain a low level of sterol compared to higher eukaryotes.
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Affiliation(s)
- Sandeep Shrivastava
- Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India
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Cournia Z, Ullmann GM, Smith JC. Differential Effects of Cholesterol, Ergosterol and Lanosterol on a Dipalmitoyl Phosphatidylcholine Membrane: A Molecular Dynamics Simulation Study. J Phys Chem B 2007; 111:1786-801. [PMID: 17261058 DOI: 10.1021/jp065172i] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Lipid raft/domain formation may arise as a result of the effects of specific sterols on the physical properties of membranes. Here, using molecular dynamics simulation, we examine the effects of three closely-related sterols, ergosterol, cholesterol, and lanosterol, at a biologically relevant concentration (40 mol %) on the structural properties of a model dipalmitoyl phosphatidylcholine (DPPC) membrane at 309 and 323 K. All three sterols are found to order the DPPC acyl tails and condense the membrane relative to the DPPC liquid-phase membrane, but each one does this to a significantly different degree. The smooth alpha-face of ergosterol, together with the presence of tail unsaturation in this sterol, leads to closer interaction of ergosterol with the lipids and closer packing of the lipids with each other, so ergosterol has a higher condensing effect on the membrane, as reflected by the area per lipid. Moreover, ergosterol induces a higher proportion of trans lipid conformers, a thicker membrane, and higher lipid order parameters and is aligned more closely with the membrane normal. Ergosterol also positions itself closer to the bilayer/water interface. In contrast, the rough alpha-face of lanosterol leads to a less close interaction of the steroid ring system with the phospholipid acyl chains, and so lanosterol orders, straightens, and packs the lipid acyl chains less well and is less closely aligned with the membrane normal. Furthermore, lanosterol lies closer to the relatively disordered membrane center than do the other sterols. The behavior of cholesterol in all the above respects is intermediate between that of lanosterol and ergosterol. The findings here may explain why ergosterol is the most efficient of the three sterols at promoting the liquid-ordered phase and lipid domain formation and may also furnish part of the explanation as to why cholesterol is evolutionarily preferred over lanosterol in higher-vertebrate plasma membranes.
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Affiliation(s)
- Zoe Cournia
- Computational Molecular Biophysics, Interdisciplinary Center for Scientific Computing (IWR), Im Neuenheimer Feld 368, Universität Heidelberg, 69120 Heidelberg, Germany
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