1
|
TTAPE-Me dye is not selective to cardiolipin and binds to common anionic phospholipids nonspecifically. Biophys J 2021; 120:3776-3786. [PMID: 34280369 DOI: 10.1016/j.bpj.2021.06.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 06/09/2021] [Accepted: 06/24/2021] [Indexed: 11/21/2022] Open
Abstract
Identification, visualization, and quantitation of cardiolipin (CL) in biological membranes is of great interest because of the important structural and physiological roles of this lipid. Selective fluorescent detection of CL using noncovalently bound fluorophore 1,1,2,2-tetrakis[4-(2-trimethylammonioethoxy)-phenylethene (TTAPE-Me) has been recently proposed. However, this dye was only tested on wild-type mitochondria or liposomes containing negligible amounts of other anionic lipids, such as phosphatidylglycerol (PG) and phosphatidylserine (PS). No clear preference of TTAPE-Me for binding to CL compared to PG and PS was found in our experiments on artificial liposomes, Escherichia coli inside-out vesicles, or Saccharomyces cerevisiae mitochondria in vitro or in situ, respectively. The shapes of the emission spectra for these anionic phospholipids were also found to be indistinguishable. Thus, TTAPE-Me is not suitable for detection, visualization, and localization of CL in the presence of other anionic lipids present in substantial physiological amounts. Our experiments and complementary molecular dynamics simulations suggest that fluorescence intensity of TTAPE-Me is regulated by dynamic equilibrium between emitting dye aggregates, stabilized by unspecific but thermodynamically favorable electrostatic interactions with anionic lipids, and nonemitting dye monomers. These results should be taken into consideration when interpreting past and future results of CL detection and localization studies with this probe in vitro and in vivo. Provided methodology emphasizes minimal experimental requirements, which should be considered as a guideline during the development of novel lipid-specific probes.
Collapse
|
2
|
Perczyk P, Wójcik A, Hachlica N, Wydro P, Broniatowski M. The composition of phospholipid model bacterial membranes determines their endurance to secretory phospholipase A2 attack – The role of cardiolipin. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183239. [DOI: 10.1016/j.bbamem.2020.183239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 02/12/2020] [Accepted: 02/13/2020] [Indexed: 10/24/2022]
|
3
|
Wójcik A, Perczyk P, Wydro P, Broniatowski M. Dichlorobiphenyls and chlorinated benzoic acids – Emergent soil pollutants in model bacterial membranes. Langmuir monolayer and Grazing Incidence X-ray Diffraction studies. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112997] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
4
|
Sturm M, Gutowski O, Brezesinski G. The Influence of Calcium Traces in Ultrapure Water on the Lateral Organization in Tetramyristoyl Cardiolipin Monolayers. Chemphyschem 2019; 20:1521-1526. [DOI: 10.1002/cphc.201900126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/13/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Marina Sturm
- Institute of PhysicsUniversity of Greifswald Felix-Hausdorff-Str. 6 17489 Greifswald Germany
- Biomolecular SystemsMax Planck Institute of Colloids and Interfaces Science Park Potsdam-Golm Am Mühlenberg 1 14476 Potsdam Germany
| | - Olof Gutowski
- Photon ScienceDeutsches Elektronen-Synchrotron DESY Notkestr. 85 22607 Hamburg Germany
| | - Gerald Brezesinski
- Biomolecular SystemsMax Planck Institute of Colloids and Interfaces Science Park Potsdam-Golm Am Mühlenberg 1 14476 Potsdam Germany
| |
Collapse
|
5
|
The role of cardiolipin concentration and acyl chain composition on mitochondrial inner membrane molecular organization and function. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1039-1052. [PMID: 30951877 DOI: 10.1016/j.bbalip.2019.03.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/19/2019] [Accepted: 03/30/2019] [Indexed: 12/28/2022]
Abstract
Cardiolipin (CL) is a key phospholipid of the mitochondria. A loss of CL content and remodeling of CL's acyl chains is observed in several pathologies. Strong shifts in CL concentration and acyl chain composition would presumably disrupt mitochondrial inner membrane biophysical organization. However, it remains unclear in the literature as to which is the key regulator of mitochondrial membrane biophysical properties. We review the literature to discriminate the effects of CL concentration and acyl chain composition on mitochondrial membrane organization. A widely applicable theme emerges across several pathologies, including cardiovascular diseases, diabetes, Barth syndrome, and neurodegenerative ailments. The loss of CL, often accompanied by increased levels of lyso-CLs, impairs mitochondrial inner membrane organization. Modest remodeling of CL acyl chains is not a major driver of impairments and only in cases of extreme remodeling is there an influence on membrane properties.
Collapse
|
6
|
Kensbock R, Ahrens H, Helm CA. Interactions of Monovalent and Divalent Cations with Cardiolipin Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3624-3633. [PMID: 30732452 DOI: 10.1021/acs.langmuir.8b03637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cardiolipin is a mitochondrial phospholipid with four alkyl chains and two phosphate moieties. Tetramyristoyl cardiolipin (TMCL, (14:0)4CL) monolayers at the air-water interface are characterized by compression isotherms, which show a liquid expanded/liquid condensed phase transition. The phase transition surface pressure πc depends on the composition of the aqueous solution. In a calculation, this is attributed to the electrostatic double layer, which is induced by the head groups of the model membrane, and competitive ion binding. The intrinsic binding constant is large for protons ( KH = 10 L/mol) and small for monovalent cations ( KM (Na+, K+, Cs+) = 10-3 L/mol). The different intrinsic binding constants explain the non-monotonic behavior of πc on increasing the salt concentration: raising the monovalent salt concentration increases πc by charging the TMCL monolayer until 0.1 mol/L, then screening effects dominate and decrease πc by reducing the electrostatic repulsion between lipid head groups. When at fixed 0.15 mol/L NaCl concentration, the concentration of divalent cations is increased, πc decreases. The intrinsic binding constants of divalent cations follow the sequence Sr2+ < Mg2+ < Mn2+ ≈ Zn2+ ≈ Ca2+ ( KD,Ca = 1.2 L/mol). The predictive power of the calculations was tested with different solutions.
Collapse
Affiliation(s)
- Renko Kensbock
- Institute of Physics , University of Greifswald , Felix-Hausdorff-Straße 6 , D-17487 Greifswald , Germany
| | - Heiko Ahrens
- Institute of Physics , University of Greifswald , Felix-Hausdorff-Straße 6 , D-17487 Greifswald , Germany
| | - Christiane A Helm
- Institute of Physics , University of Greifswald , Felix-Hausdorff-Straße 6 , D-17487 Greifswald , Germany
| |
Collapse
|
7
|
Wojcik A, Pawłowski M, Wydro P, Broniatowski M. Effects of Polychlorinated Pesticides and Their Metabolites on Phospholipid Organization in Model Microbial Membranes. J Phys Chem B 2018; 122:12017-12030. [DOI: 10.1021/acs.jpcb.8b08989] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aneta Wojcik
- Department of Environmental Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Marcin Pawłowski
- Department of Environmental Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Paweł Wydro
- Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Marcin Broniatowski
- Department of Environmental Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| |
Collapse
|
8
|
Wójcik A, Perczyk P, Wydro P, Flasiński M, Broniatowski M. Interactions of Long-Chain Perfluorotelomer Alcohol and Perfluorinated Hydrocarbons with Model Decomposer Membranes. J Phys Chem B 2018; 122:7340-7352. [DOI: 10.1021/acs.jpcb.8b05194] [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]
|
9
|
Broniatowski M, Binczycka M, Wójcik A, Flasiński M, Wydro P. Polycyclic aromatic hydrocarbons in model bacterial membranes – Langmuir monolayer studies. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:2402-2412. [DOI: 10.1016/j.bbamem.2017.09.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 08/31/2017] [Accepted: 09/14/2017] [Indexed: 12/16/2022]
|
10
|
Hädicke A, Schwieger C, Blume A. Cospreading of Anionic Phospholipids with Peptides of the Structure (KX) 4K at the Air-Water Interface: Influence of Lipid Headgroup Structure and Hydrophobicity of the Peptide on Monolayer Behavior. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12204-12217. [PMID: 28968121 DOI: 10.1021/acs.langmuir.7b02255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mixtures of anionic phospholipids (PG, PA, PS, and CL) with cationic peptides were cospread from a common organic solvent at the air-water interface. The compression of the mixed film was combined with epifluorescence microscopy or infrared reflection adsorption spectroscopy (IRRAS) to gain information on the interactions of the peptide with the different lipids. To evaluate the influence of the amino acid X of peptides with the sequence (KX)4K on the binding, 1,2-dipalmitoyl-sn-glycero-3-phosphoglycerol (DPPG) was mixed with different peptides with increasing hydrophobicity of the uncharged amino acid X. The monolayer isotherms of DPPG/(KX)4K mixtures show an increased area for the lift-off due to incorporation of the peptide into the liquid-expanded (LE) state of the lipid. The surface pressure for the transition from LE to the liquid-condensed (LC) state is slightly increased for peptides with amino acids X with moderate hydrophobicity. For the most hydrophobic peptide (KL)4K two plateaus are seen at a charge ratio PG to K of 5:1, and a strongly increased transition pressure is observed for a charge ratio of 1:1. Epifluorescence microscopy images and infrared spectroscopy show that the lower plateau corresponds to the LE-LC phase transition of the lipid. The upper plateau is connected with a squeeze-out of the peptide into the subphase. To test the influence of the lipid headgroup structure on peptide binding (KL)4K was cospread with different anionic phospholipids. The shift of the isotherm to larger areas for lift-off and to higher surface pressure for the LE-LC phase transition was observed for all tested anionic lipids. Epifluorescence microscopy reveals the formation of LC domains with extended filaments indicating a decrease in line tension due to accumulation of the peptides at the LC-domain boundaries. This effect depends on the size of the headgroup of the anionic phospholipid.
Collapse
Affiliation(s)
- André Hädicke
- Institute of Chemistry , MLU Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle/Saale, Germany
| | - Christian Schwieger
- Institute of Chemistry , MLU Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle/Saale, Germany
| | - Alfred Blume
- Institute of Chemistry , MLU Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle/Saale, Germany
| |
Collapse
|
11
|
Pennington ER, Fix A, Sullivan EM, Brown DA, Kennedy A, Shaikh SR. Distinct membrane properties are differentially influenced by cardiolipin content and acyl chain composition in biomimetic membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1859:257-267. [PMID: 27889304 DOI: 10.1016/j.bbamem.2016.11.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 12/14/2022]
Abstract
Cardiolipin (CL) has a critical role in maintaining mitochondrial inner membrane structure. In several conditions such as heart failure and aging, there is loss of CL content and remodeling of CL acyl chains, which are hypothesized to impair mitochondrial inner membrane biophysical organization. Therefore, this study discriminated how CL content and acyl chain composition influenced select properties of simple and complex mitochondrial mimicking model membranes. We focused on monolayer excess area/molecule (a measure of lipid miscibility), bilayer phase transitions, and microdomain organization. In monolayer compression studies, loss of tetralinoleoyl [(18:2)4] CL content decreased the excess area/molecule. Replacement of (18:2)4CL acyl chains with tetraoleoyl [(18:1)4] CL or tetradocosahexaenoyl [(22:6)4] CL generally had little influence on monolayer excess area/molecule; in contrast, replacement of (18:2)4CL acyl chains with tetramyristoyl [(14:0)4] CL increased monolayer excess area/molecule. In bilayers, calorimetric studies showed that substitution of (18:2)4CL with (18:1)4CL or (22:6)4CL lowered the phase transition temperature of phosphatidylcholine vesicles whereas (14:0)4CL had no effect. Finally, quantitative imaging of giant unilamellar vesicles revealed differential effects of CL content and acyl chain composition on microdomain organization, visualized with the fluorescent probe Texas Red DHPE. Notably, microdomain areas were decreased by differing magnitudes upon lowering of (18:2)4CL content and substitution of (18:2)4CL with (14:0)4CL or (22:6)4CL. Conversely, exchanging (18:2)4CL with (18:1)4CL increased microdomain area. Altogether, these data demonstrate that CL content and fatty acyl composition differentially target membrane physical properties, which has implications for understanding how CL regulates mitochondrial activity and the design of CL-specific therapeutics.
Collapse
Affiliation(s)
- Edward Ross Pennington
- Department of Biochemistry & Molecular Biology, USA; East Carolina Diabetes & Obesity Institute, Brody School of Medicine, East Carolina University, 115 Heart Drive, Mail Stop 743, Greenville, NC 27834, USA
| | - Amy Fix
- Department of Biochemistry & Molecular Biology, USA
| | - E Madison Sullivan
- Department of Biochemistry & Molecular Biology, USA; East Carolina Diabetes & Obesity Institute, Brody School of Medicine, East Carolina University, 115 Heart Drive, Mail Stop 743, Greenville, NC 27834, USA
| | - David A Brown
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech Corporate Research Center, 1035 ILSB, 1981 Kraft Drive, Blacksburg, VA 24060, USA
| | - Anthony Kennedy
- Department of Chemistry, East 10th Street, Mail Stop 552, East Carolina University, Greenville, NC 27854, USA
| | - Saame Raza Shaikh
- Department of Biochemistry & Molecular Biology, USA; East Carolina Diabetes & Obesity Institute, Brody School of Medicine, East Carolina University, 115 Heart Drive, Mail Stop 743, Greenville, NC 27834, USA.
| |
Collapse
|
12
|
Li M, Gan C, Shao W, Yu C, Wang X, Chen Y. Effects of membrane lipid composition and antibacterial drugs on the rigidity of Escherichia coli: Different contributions of various bacterial substructures. SCANNING 2016; 38:70-79. [PMID: 26153236 DOI: 10.1002/sca.21243] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/18/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
The rigidity/stiffness is an important biomechanical property of bacteria and potentially correlated with many bacterial activities. While the rigidity or fluidity of the bacterial membrane has been extensively studied, the contributions of different bacterial substructures to the bacterial rigidity are less investigated. Here, we utilized four Escherichia coli (E. coli) strains with different membrane lipid compositions and three antibacterial drugs (EDTA, lysozyme, and streptomycin) to specifically alter bacterial substructures. By using atomic force microscopy (AFM), we found that the average height and Young's modulus of phosphatidylethanolamine (PE)-deficient E. coli strains were larger than those of PE(+) strains and that EDTA, EDTA plus lysozyme instead of lysozyme alone, and streptomycin all caused significant decreases in height and Young's modulus of the four E. coli strains. Our data imply that membrane lipid composition, the integrated outer membrane, the cell wall, and the cytoplasmic content are all responsible for bacterial rigidity but to different extents.
Collapse
Affiliation(s)
- Ming Li
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, People's Republic of China
- College of Life Sciences, Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Chaoye Gan
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, People's Republic of China
- College of Life Sciences, Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Wenxiang Shao
- School of Basic Medical Sciences, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, People's Republic of China
| | - Chuan Yu
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, People's Republic of China
- College of Life Sciences, Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Xingguo Wang
- Faculty of Life Sciences, Hubei University, Wuchang, Hubei, People's Republic of China
| | - Yong Chen
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, People's Republic of China
- College of Life Sciences, Nanchang University, Nanchang, Jiangxi, People's Republic of China
| |
Collapse
|
13
|
Broniatowski M, Flasiński M, Zięba K, Miśkowiec P. Langmuir monolayer studies of the interaction of monoamphiphilic pentacyclic triterpenes with anionic mitochondrial and bacterial membrane phospholipids — Searching for the most active terpene. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2460-72. [DOI: 10.1016/j.bbamem.2014.05.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 05/03/2014] [Accepted: 05/05/2014] [Indexed: 01/11/2023]
|
14
|
Zeczycki TN, Whelan J, Hayden WT, Brown DA, Shaikh SR. Increasing levels of cardiolipin differentially influence packing of phospholipids found in the mitochondrial inner membrane. Biochem Biophys Res Commun 2014; 450:366-71. [DOI: 10.1016/j.bbrc.2014.05.133] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 05/27/2014] [Indexed: 11/16/2022]
|
15
|
Ren M, Phoon CKL, Schlame M. Metabolism and function of mitochondrial cardiolipin. Prog Lipid Res 2014; 55:1-16. [PMID: 24769127 DOI: 10.1016/j.plipres.2014.04.001] [Citation(s) in RCA: 226] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 04/04/2014] [Accepted: 04/14/2014] [Indexed: 12/22/2022]
Abstract
Since it has been recognized that mitochondria are crucial not only for energy metabolism but also for other cellular functions, there has been a growing interest in cardiolipin, the specific phospholipid of mitochondrial membranes. Indeed, cardiolipin is a universal component of mitochondria in all eukaryotes. It has a unique dimeric structure comprised of two phosphatidic acid residues linked by a glycerol bridge, which gives rise to unique physicochemical properties. Cardiolipin plays an important role in the structural organization and the function of mitochondrial membranes. In this article, we review the literature on cardiolipin biology, focusing on the most important discoveries of the past decade. Specifically, we describe the formation, the migration, and the degradation of cardiolipin and we discuss how cardiolipin affects mitochondrial function. We also give an overview of the various phenotypes of cardiolipin deficiency in different organisms.
Collapse
Affiliation(s)
- Mindong Ren
- Department of Anesthesiology, New York University School of Medicine, New York, USA; Department of Cell Biology, New York University School of Medicine, New York, USA
| | - Colin K L Phoon
- Department of Pediatrics, New York University School of Medicine, New York, USA
| | - Michael Schlame
- Department of Anesthesiology, New York University School of Medicine, New York, USA; Department of Cell Biology, New York University School of Medicine, New York, USA.
| |
Collapse
|
16
|
Zhytniakivska O, Trusova V, Gorbenko G, Kirilova E, Kalnina I, Kirilov G, Molotkovsky J, Tulkki J, Kinnunen P. Location of Novel Benzanthrone Dyes in Model Membranes as Revealed by Resonance Energy Transfer. J Fluoresc 2014; 24:899-907. [DOI: 10.1007/s10895-014-1370-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 02/24/2014] [Indexed: 01/21/2023]
|
17
|
Seydlová G, Fišer R, Cabala R, Kozlík P, Svobodová J, Pátek M. Surfactin production enhances the level of cardiolipin in the cytoplasmic membrane of Bacillus subtilis. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2370-8. [PMID: 23845875 DOI: 10.1016/j.bbamem.2013.06.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 06/21/2013] [Accepted: 06/28/2013] [Indexed: 11/28/2022]
Abstract
Surfactin is a cyclic lipopeptide antibiotic that disturbs the integrity of the cytoplasmic membrane. In this study, the role of membrane lipids in the adaptation and possible surfactin tolerance of the surfactin producer Bacillus subtilis ATCC 21332 was investigated. During a 1-day cultivation, the phospholipids of the cell membrane were analyzed at the selected time points, which covered both the early and late stationary phases of growth, when surfactin concentration in the medium gradually rose from 2 to 84μmol·l(-1). During this time period, the phospholipid composition of the surfactin producer's membrane (Sf(+)) was compared to that of its non-producing mutant (Sf(-)). Substantial modifications of the polar head group region in response to the presence of surfactin were found, while the fatty acid content remained unaffected. Simultaneously with surfactin production, a progressive accumulation up to 22% of the stress phospholipid cardiolipin was determined in the Sf(+) membrane, whereas the proportion of phosphatidylethanolamine remained constant. At 24h, cardiolipin was found to be the second major phospholipid of the membrane. In parallel, the Laurdan generalized polarization reported an increasing rigidity of the lipid bilayer. We concluded that an enhanced level of cardiolipin is responsible for the membrane rigidification that hinders the fluidizing effect of surfactin. At the same time cardiolipin, due to its negative charge, may also prevent the surfactin-membrane interaction or surfactin pore formation activity.
Collapse
Affiliation(s)
- Gabriela Seydlová
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 128 44 Prague 2, Czech Republic.
| | | | | | | | | | | |
Collapse
|
18
|
Affiliation(s)
- Francisco Zaera
- Department of Chemistry, University of California, Riverside, California 92521, United States
| |
Collapse
|
19
|
Gonzalvez F, Pariselli F, Jalmar O, Dupaigne P, Sureau F, Dellinger M, Hendrickson EA, Bernard S, Petit PX. Mechanistic issues of the interaction of the hairpin-forming domain of tBid with mitochondrial cardiolipin. PLoS One 2010; 5:e9342. [PMID: 20179769 PMCID: PMC2825271 DOI: 10.1371/journal.pone.0009342] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Accepted: 01/25/2010] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The pro-apoptotic effector Bid induces mitochondrial apoptosis in synergy with Bax and Bak. In response to death receptors activation, Bid is cleaved by caspase-8 into its active form, tBid (truncated Bid), which then translocates to the mitochondria to trigger cytochrome c release and subsequent apoptosis. Accumulating evidence now indicate that the binding of tBid initiates an ordered sequences of events that prime mitochondria from the action of Bax and Bak: (1) tBid interacts with mitochondria via a specific binding to cardiolipin (CL) and immediately disturbs mitochondrial structure and function idependently of its BH3 domain; (2) Then, tBid activates through its BH3 domain Bax and/or Bak and induces their subsequent oligomerization in mitochondrial membranes. To date, the underlying mechanism responsible for targeting tBid to mitochondria and disrupting mitochondrial bioenergetics has yet be elucidated. PRINCIPAL FINDINGS The present study investigates the mechanism by which tBid interacts with mitochondria issued from mouse hepatocytes and perturbs mitochondrial function. We show here that the helix alphaH6 is responsible for targeting tBid to mitochondrial CL and disrupting mitochondrial bioenergetics. In particular, alphaH6 interacts with mitochondria through electrostatic interactions involving the lysines 157 and 158 and induces an inhibition of state-3 respiration and an uncoupling of state-4 respiration. These changes may represent a key event that primes mitochondria for the action of Bax and Bak. In addition, we also demonstrate that tBid required its helix alphaH6 to efficiently induce cytochrome c release and apoptosis. CONCLUSIONS Our findings provide new insights into the mechanism of action of tBid, and particularly emphasize the importance of the interaction of the helix alphaH6 with CL for both mitochondrial targeting and pro-apoptotic activity of tBid. These support the notion that tBid acts as a bifunctional molecule: first, it binds to mitochondrial CL via its helix alphaH6 and destabilizes mitochondrial structure and function, and then it promotes through its BH3 domain the activation and oligomerization of Bax and/or Bak, leading to cytochrome c release and execution of apoptosis. Our findings also imply an active role of the membrane in modulating the interactions between Bcl-2 proteins that has so far been underestimated.
Collapse
Affiliation(s)
- François Gonzalvez
- Institut Cochin, CNRS UMR8104 (Centre National de la Recherche Scientifique), INSERM U 567, Université Paris-Descartes, Paris, France
| | - Fabrizio Pariselli
- Institut Cochin, CNRS UMR8104 (Centre National de la Recherche Scientifique), INSERM U 567, Université Paris-Descartes, Paris, France
| | - Olivier Jalmar
- Institut Cochin, CNRS UMR8104 (Centre National de la Recherche Scientifique), INSERM U 567, Université Paris-Descartes, Paris, France
| | - Pauline Dupaigne
- Université Paris Descartes, UPR2228 CNRS (Centre National de la Recherche Scientifique), Paris, France
| | - Franck Sureau
- BioMoCeti, CNRS UMR7033 (Centre National de la Recherche Scientifique), Université Paris VI - Université Paris XIII, GENOPOLE Campus 1, Site SERONO, RN 7, Evry, France
| | - Marc Dellinger
- USM 504 Biologie Fonctionnelle des Protozoaires, Muséum National d'Histoire Naturelle, Paris, France
| | - Eric A. Hendrickson
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Sophie Bernard
- UPR 2228 CNRS (Centre National de la Recherche Scientifique), Université Paris Descartes, IFR 95, Paris, France
| | - Patrice X. Petit
- Institut Cochin, CNRS UMR8104 (Centre National de la Recherche Scientifique), INSERM U 567, Université Paris-Descartes, Paris, France
- * E-mail:
| |
Collapse
|
20
|
Petit PX, Dupaigne P, Pariselli F, Gonzalvez F, Etienne F, Rameau C, Bernard S. Interaction of the alpha-helical H6 peptide from the pro-apoptotic protein tBid with cardiolipin. FEBS J 2009; 276:6338-54. [DOI: 10.1111/j.1742-4658.2009.07345.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
21
|
Arcisio-Miranda M, Abdulkader F, Brunaldi K, Curi R, Procopio J. Proton flux induced by free fatty acids across phospholipid bilayers: New evidences based on short-circuit measurements in planar lipid membranes. Arch Biochem Biophys 2009; 484:63-9. [DOI: 10.1016/j.abb.2009.01.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2008] [Revised: 12/29/2008] [Accepted: 01/20/2009] [Indexed: 01/27/2023]
|
22
|
Lewis RNAH, McElhaney RN. The physicochemical properties of cardiolipin bilayers and cardiolipin-containing lipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2009; 1788:2069-79. [PMID: 19328771 DOI: 10.1016/j.bbamem.2009.03.014] [Citation(s) in RCA: 192] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2008] [Accepted: 03/19/2009] [Indexed: 12/01/2022]
Abstract
In this review article, we summarize the current state of biophysical knowledge concerning the phase behavior and organization of cardiolipin (CL) and CL-containing phospholipid bilayer model membranes. We first briefly consider the occurrence and distribution of CL in biological membranes and its probable biological functions therein. We next consider the unique chemical structure of the CL molecule and how this structure may determine its distinctive physical properties. We then consider in some detail the thermotropic phase behavior and organization of CL and CL-containing lipid model membranes as revealed by a variety of biophysical techniques. We also attempt to relate the chemical properties of CL to its function in the biological membranes in which it occurs. Finally, we point out the requirement for additional biophysical studies of both lipid model and biological membranes in order to increase our currently limited understanding of the relationship between CL structure and physical properties and CL function in biological membranes.
Collapse
Affiliation(s)
- Ruthven N A H Lewis
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2H7
| | | |
Collapse
|
23
|
Maniti O, Cheniour M, Marcillat O, Vial C, Granjon T. Morphology modifications in negatively charged lipid monolayers upon mitochondrial creatine kinase binding. Mol Membr Biol 2009; 26:171-85. [PMID: 19180361 DOI: 10.1080/09687680802698639] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mitochondrial creatine kinase (mtCK) may participate to membrane organization at the mitochondrial level by modulating lipid state and fluidity. The effect of the protein on lipid phase behaviour of different acyl chain length phosphatidylglycerol monolayers was analyzed from pressure-area isotherms and from the compressional modulus variation with respect to the surface pressure. Monolayer morphology was visualized by Brewster angle microscopy. No condensation effect was visible on dimyristoylphosphatidylglycerol (DMPG). For the other PG monolayers tested, dipalmitoylphosphatidylglycerol (DPPG) and distearoylphosphatidylglycerol (DSPG), mtCK facilitated the formation of a liquid condensed phase. The effect depended on the surface pressure at which transition phase occurred. The effect of mtCK was more pronounced for tetramyristoylcardiolipin (TMCL) monolayers, as liquid condensed regions appeared 10 mN/m below the transition phase of the pure TMCL monolayer. The observed domains were circular and rather uniform, indicating a stabilization of the condensed phase. The same effect, namely an overall condensation of the monolayer with formation of circular domains, was observed upon protein injection beneath TMCL monolayers in different condensation states at constant area. MtCK ability to induce and stabilize a LC phase on monolayers could have important consequences in membrane organization and emphasize its structural role at mitochondrial level.
Collapse
Affiliation(s)
- Ofelia Maniti
- Universite de Lyon, Lyon, and Universite Lyon 1, CNRS, UMR 5246, Institut de Chimie et Biochimie Moleculaires et Supramoleculaires, IMBL, Villeurbanne, France
| | | | | | | | | |
Collapse
|
24
|
Dahlberg M, Maliniak A. Molecular dynamics simulations of cardiolipin bilayers. J Phys Chem B 2008; 112:11655-63. [PMID: 18712912 DOI: 10.1021/jp803414g] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cardiolipin is a key lipid component in the inner mitochondrial membrane, where the lipid is involved in energy production, cristae structure, and mechanisms in the apoptotic pathway. In this article we used molecular dynamics computer simulations to investigate cardiolipin and its effect on the structure of lipid bilayers. Three cardiolipin/POPC bilayers with different lipid compositions were simulated: 100, 9.2, and 0% cardiolipin. We found strong association of sodium counterions to the carbonyl groups of both lipid types, leaving in the case of 9.2% cardiolipin virtually no ions in the aqueous compartment. Although binding occurred primarily at the carbonyl position, there was a preference to bind to the carbonyl groups of cardiolipin. Ion binding and the small headgroup of cardiolipin gave a strong ordering of the hydrocarbon chains. We found significant effects in the water dipole orientation and water dipole potential which can compensate for the electrostatic repulsion that otherwise should force charged lipids apart. Several parameters relevant for the molecular structure of cardiolipin were calculated and compared with results from analyses of coarse-grained simulations and available X-ray structural data.
Collapse
Affiliation(s)
- Martin Dahlberg
- Division of Physical Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, Sweden.
| | | |
Collapse
|