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Papadopoulou P, Arias-Alpizar G, Weeda P, Poppe T, van Klaveren N, Slíva T, Aschmann D, van Os W, Zhang Y, Moradi MA, Sommerdijk N, Campbell F, Kros A. Structure-function relationship of phase-separated liposomes containing diacylglycerol analogues. Biomater Sci 2024. [PMID: 39177657 DOI: 10.1039/d4bm00799a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
The composition and morphology of lipid-based nanoparticles can influence their overall in vivo behavior. Previously, we demonstrated that phase separation in liposomes composed of DSPC and a diacylglycerol lipid analogue (DOaG) drives the in vivo biodistribution towards a specific subset of endothelial cells in zebrafish embryos. In the absence of traditional targeting functionalities (e.g., antibodies, ligands), this selectivity is mediated solely by the unique liposome morphology and composition, characterized by a DOaG-rich lipid droplet within the DSPC-rich phospholipid bilayer. The phase separation is induced due to the geometry of DOaG lipid and its ability to create non-bilayer phases in lipid membranes. To investigate the underlying principles of phase separation and to optimize the liposome colloidal stability, we performed a structure-function relationship study by synthesizing a library of DOaG analogues with varying molecular properties, such as the number, length and sn-position of the acyl chains, as well as the degree of saturation or carbonyl substituents. We assessed the ability of these lipid analogues to assemble into phase-separated liposomes and studied their morphology, colloidal stability, and in vivo biodistribution in zebrafish embryos. We found that analogues containing unsaturated, medium length (C16-C18) fatty acids were required to obtain colloidally stable, phase-separated liposomes with cell-specific biodistribution patterns. Moreover, we observed that using the pure DOaG isomer, with acyl chains at the sn-1,3 positions, leads to more colloidally stable liposomes than when a mixture of sn-1,2 and sn-1,3 isomers is used. Similarly, we observed that incorporating a DOaG analogue with fatty tails shorter than DSPC, as well as PEGylation, endows liposomes with long term stability while retaining cell-selective biodistribution. Diacylglycerols are known to promote fusion, lipid polymorphism, signaling and protein recruitment on lipid membranes. In this study, we showed that diacylglycerol derivatives can induce phase separation in liposomes, unlocking the potential for cell-specific targeting in vivo. We believe that these findings can be the foundation for future use of diacylglycerols in lipid-based nanomedicines and could lead to the development of novel targeted delivery strategies.
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Affiliation(s)
- Panagiota Papadopoulou
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Gabriela Arias-Alpizar
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Pim Weeda
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Thijs Poppe
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Niels van Klaveren
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Tomas Slíva
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Dennis Aschmann
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Winant van Os
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Yun Zhang
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Mohammad-Amin Moradi
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Nico Sommerdijk
- Electron Microscopy Center, Radboud Technology Center Microscopy, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Biochemistry, Radboud Institute of Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frederick Campbell
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Alexander Kros
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
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Sapia J, Vanni S. Molecular dynamics simulations of intracellular lipid droplets: a new tool in the toolbox. FEBS Lett 2024; 598:1143-1153. [PMID: 38627196 DOI: 10.1002/1873-3468.14879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/14/2024] [Accepted: 03/25/2024] [Indexed: 05/25/2024]
Abstract
Lipid droplets (LDs) are ubiquitous intracellular organelles with a central role in multiple lipid metabolic pathways. However, identifying correlations between their structural properties and their biological activity has proved challenging, owing to their unique physicochemical properties as compared with other cellular membranes. In recent years, molecular dynamics (MD) simulations, a computational methodology allowing the accurate description of molecular assemblies down to their individual components, have been demonstrated to be a useful and powerful approach for studying LD structural and dynamical properties. In this short review, we attempt to highlight, as comprehensively as possible, how MD simulations have contributed to our current understanding of multiple molecular mechanisms involved in LD biology.
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Affiliation(s)
- Jennifer Sapia
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Stefano Vanni
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Université Côte d'Azur, Inserm, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, France
- Swiss National Center for Competence in Research (NCCR) Bio-inspired Materials, University of Fribourg, Fribourg, Switzerland
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3
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Papadopoulou P, van der Pol R, van Hilten N, van Os WL, Pattipeiluhu R, Arias-Alpizar G, Knol RA, Noteborn W, Moradi MA, Ferraz MJ, Aerts JMFG, Sommerdijk N, Campbell F, Risselada HJ, Sevink GJA, Kros A. Phase-Separated Lipid-Based Nanoparticles: Selective Behavior at the Nano-Bio Interface. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310872. [PMID: 37988682 DOI: 10.1002/adma.202310872] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Indexed: 11/23/2023]
Abstract
The membrane-protein interface on lipid-based nanoparticles influences their in vivo behavior. Better understanding may evolve current drug delivery methods toward effective targeted nanomedicine. Previously, the cell-selective accumulation of a liposome formulation in vivo is demonstrated, through the recognition of lipid phase-separation by triglyceride lipases. This exemplified how liposome morphology and composition can determine nanoparticle-protein interactions. Here, the lipase-induced compositional and morphological changes of phase-separated liposomes-which bear a lipid droplet in their bilayer- are investigated, and the mechanism upon which lipases recognize and bind to the particles is unravelled. The selective lipolytic degradation of the phase-separated lipid droplet is observed, while nanoparticle integrity remains intact. Next, the Tryptophan-rich loop of the lipase is identified as the region with which the enzymes bind to the particles. This preferential binding is due to lipid packing defects induced on the liposome surface by phase separation. In parallel, the existing knowledge that phase separation leads to in vivo selectivity, is utilized to generate phase-separated mRNA-LNPs that target cell-subsets in zebrafish embryos, with subsequent mRNA delivery and protein expression. Together, these findings can expand the current knowledge on selective nanoparticle-protein communications and in vivo behavior, aspects that will assist to gain control of lipid-based nanoparticles.
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Affiliation(s)
- Panagiota Papadopoulou
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Rianne van der Pol
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Niek van Hilten
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Winant L van Os
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Roy Pattipeiluhu
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Gabriela Arias-Alpizar
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Renzo Aron Knol
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Willem Noteborn
- NeCEN, Leiden University, Einsteinweg 55, Leiden, 2333 AL, The Netherlands
| | - Mohammad-Amin Moradi
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
| | - Maria Joao Ferraz
- Department of Medical Biochemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | | | - Nico Sommerdijk
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
- Department of Medical BioSciences and Radboud Technology Center - Electron Microscopy, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Frederick Campbell
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Herre Jelger Risselada
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
- Department of Physics, Technical University Dortmund, 44221, Dortmund, Germany
| | - Geert Jan Agur Sevink
- Department of Biophysical Organic Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
| | - Alexander Kros
- Department of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P. O. Box 9502, Leiden, 2300 RA, The Netherlands
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Arrais AM, Burla Dias AJ, de Souza CLM, Curcio AG, Mello MRBD. Inhibition of phospholipase C reduces the capacitation of cryopreserved ovine sperm. Theriogenology 2024; 213:19-23. [PMID: 37793221 DOI: 10.1016/j.theriogenology.2023.09.022] [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] [Received: 09/21/2022] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/06/2023]
Abstract
This study aimed to evaluate the effect of phospholipase C (PLC) on the capacitation of cryopreserved ovine semen. Sixteen semen samples were cryopreserved with diluent added by 0, 10, or 20 μM of U73122, a PLC inhibitor. The sperm kinetics of the thawed samples were evaluated using the "Computer-assisted Sperm Analysis" system, and the integrity of the plasma and mitochondrial membranes was evaluated using fluorescent probes. Additionally, sperm capacitation and the acrosome reaction with chlortetracycline hydrochloride were evaluated before and after capacitation induction. The results were analysed using analysis of variance and Tukey's test with a 95% probability. Concentrations of 10 or 20 μM of U73122 did not affect the kinetics or number of sperm with intact plasma and mitochondrial membranes. However, after thawing, 10 and 20 μM of the inhibitor reduced the percentage of capacitated and acrosome-reacted sperm. After induction of capacitation, there was a reduction in the number of non-capacitated sperm in all treatment groups, suggesting a reversible effect of U73122. In conclusion, U73122 at concentrations of 10 or 20 μM prevents premature capacitation and acrosome reaction induced by the freezing procedure, without affecting the kinetics and integrity of the sperm membranes.
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Affiliation(s)
- Aline Matos Arrais
- Departamento de Reprodução e Avaliação Animal, Universidade Federal Rural Do Rio de Janeiro, Rodovia BR 465, Km 7, S/n, Seropédica, RJ, CEP 23890-000, Brazil
| | - Angelo José Burla Dias
- Laboratório de Reprodução e Melhoramento Genético Animal, Universidade Estadual Do Norte Fluminense, 2000 Alberto Lamego Avenue, Campos Dos Goytacazes, RJ, 28013-602, Brazil
| | - Cláudio Luiz Melo de Souza
- Laboratório de Ciências Agrícolas, Universidade Estadual Do Norte Fluminense, 2000 Alberto Lamego Avenue, Campos Dos Goytacazes, RJ, CEP 28013-602, Brazil
| | - Alinne Glória Curcio
- Laboratório de Reprodução e Melhoramento Genético Animal, Universidade Estadual Do Norte Fluminense, 2000 Alberto Lamego Avenue, Campos Dos Goytacazes, RJ, 28013-602, Brazil
| | - Marco Roberto Bourg de Mello
- Departamento de Reprodução e Avaliação Animal, Universidade Federal Rural Do Rio de Janeiro, Rodovia BR 465, Km 7, S/n, Seropédica, RJ, CEP 23890-000, Brazil.
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Kurowska I, Markiewicz KH, Niemirowicz-Laskowska K, Destarac M, Wielgat P, Misztalewska-Turkowicz I, Misiak P, Car H, Wilczewska AZ. Membrane-Active Thermoresponsive Block Copolymers Containing a Diacylglycerol-Based Segment: RAFT Synthesis, Doxorubicin Encapsulation, and Evaluation of Cytotoxicity against Breast Cancer Cells. Biomacromolecules 2023; 24:4854-4868. [PMID: 37842917 PMCID: PMC10646981 DOI: 10.1021/acs.biomac.3c00580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/03/2023] [Indexed: 10/17/2023]
Abstract
Herein, we report the formation of drug delivery systems from original thermoresponsive block copolymers containing lipid-based segments. Two acrylate monomers derived from palmitic- or oleic-acid-based diacylglycerols (DAGs) were synthesized and polymerized by the reversible addition-fragmentation chain transfer (RAFT) method. Well-defined DAG-based polymers with targeted molar masses and narrow molar mass distributions were next used as macro-chain transfer agents (macro-CTAs) for the polymerization of N-isopropylacrylamide (NIPAAm) or N-vinylcaprolactam (NVCL). The obtained amphiphilic block copolymers were formed into polymeric nanoparticles (PNPs) with and without encapsulated doxorubicin and characterized. Their biological assessment indicated appropriate cytocompatibility with the representatives of normal cells. Furthermore, compared to the free drug, increased cytotoxicity and apoptosis or necrosis induction in breast cancer cells was documented, including a highly aggressive and invasive triple-negative MDA-MB-231 cell line.
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Affiliation(s)
- Izabela Kurowska
- Faculty
of Chemistry, University of Bialystok, Ciolkowskiego 1K, Bialystok 15-245, Poland
- Doctoral
School of Exact and Natural Sciences, University
of Bialystok, Bialystok 15-245, Poland
| | - Karolina H. Markiewicz
- Faculty
of Chemistry, University of Bialystok, Ciolkowskiego 1K, Bialystok 15-245, Poland
| | | | - Mathias Destarac
- Laboratoire
IMRCP, CNRS UMR 5623, Paul Sabatier University, Toulouse Cedex 09 31062, France
| | - Przemysław Wielgat
- Department
of Clinical Pharmacology, Medical University
of Bialystok, Waszyngtona 15A, Bialystok 15-274, Poland
| | | | - Paweł Misiak
- Faculty
of Chemistry, University of Bialystok, Ciolkowskiego 1K, Bialystok 15-245, Poland
| | - Halina Car
- Department
of Experimental Pharmacology, Medical University
of Bialystok, Szpitalna 37, Bialystok 15-295, Poland
- Department
of Clinical Pharmacology, Medical University
of Bialystok, Waszyngtona 15A, Bialystok 15-274, Poland
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Alabed HBR, Del Grosso A, Bellani V, Urbanelli L, Carpi S, De Sarlo M, Bertocci L, Colagiorgio L, Buratta S, Scaccini L, Frongia Mancini D, Tonazzini I, Cecchini M, Emiliani C, Pellegrino RM. Untargeted Lipidomic Approach for Studying Different Nervous System Tissues of the Murine Model of Krabbe Disease. Biomolecules 2023; 13:1562. [PMID: 37892244 PMCID: PMC10605133 DOI: 10.3390/biom13101562] [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] [Received: 09/18/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Krabbe disease is a rare neurodegenerative disease with an autosomal recessive character caused by a mutation in the GALC gene. The mutation leads to an accumulation of psychosine and a subsequent degeneration of oligodendrocytes and Schwann cells. Psychosine is the main biomarker of the disease. The Twitcher mouse is the most commonly used animal model to study Krabbe disease. Although there are many references to this model in the literature, the lipidomic study of nervous system tissues in the Twitcher model has received little attention. This study focuses on the comparison of the lipid profiles of four nervous system tissues (brain, cerebellum, spinal cord, and sciatic nerve) in the Twitcher mouse compared to the wild-type mouse. Altogether, approximately 230 molecular species belonging to 19 lipid classes were annotated and quantified. A comparison at the levels of class, molecular species, and lipid building blocks showed significant differences between the two groups, particularly in the sciatic nerve. The in-depth study of the lipid phenotype made it possible to hypothesize the genes and enzymes involved in the changes. The integration of metabolic data with genetic data may be useful from a systems biology perspective to gain a better understanding of the molecular basis of the disease.
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Affiliation(s)
- Husam B. R. Alabed
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
| | - Ambra Del Grosso
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
| | - Valeria Bellani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
| | - Lorena Urbanelli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via del Giochetto, 06123 Perugia, Italy
| | - Sara Carpi
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
- Department of Health Sciences, University “Magna Graecia” of Catanzaro, Viale Europa, Località Germaneto, 88100 Catanzaro, Italy
| | - Miriam De Sarlo
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
| | - Lorenzo Bertocci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
| | - Laura Colagiorgio
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
| | - Sandra Buratta
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
| | - Luca Scaccini
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
| | - Dorotea Frongia Mancini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
| | - Ilaria Tonazzini
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
| | - Marco Cecchini
- NEST (National Enterprise for nanoScience and nanoTechnology), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy; (A.D.G.); (S.C.); (M.D.S.); (L.C.); (L.S.); (I.T.); (M.C.)
| | - Carla Emiliani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via del Giochetto, 06123 Perugia, Italy
| | - Roberto Maria Pellegrino
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06100 Perugia, Italy; (H.B.R.A.); (V.B.); (L.U.); (L.B.); (S.B.); (D.F.M.); (C.E.)
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Fujimori ASS, Ribeiro APD, Pereira AG, Dias-Audibert FL, Tonon CR, dos Santos PP, Dantas D, Zanati SG, Catharino RR, Zornoff LAM, Azevedo PS, de Paiva SAR, Okoshi MP, Lima EO, Polegato BF. Effects of Pera Orange Juice and Moro Orange Juice in Healthy Rats: A Metabolomic Approach. Metabolites 2023; 13:902. [PMID: 37623846 PMCID: PMC10456557 DOI: 10.3390/metabo13080902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/18/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023] Open
Abstract
Cardiovascular disease is a leading cause of death worldwide. Heart failure is a cardiovascular disease with high prevalence, morbidity, and mortality. Several natural compounds have been studied for attenuating pathological cardiac remodeling. Orange juice has been associated with cardiovascular disease prevention by attenuating oxidative stress. However, most studies have evaluated isolated phytochemicals rather than whole orange juice and usually under pathological conditions. In this study, we evaluated plasma metabolomics in healthy rats receiving Pera or Moro orange juice to identify possible metabolic pathways and their effects on the heart. METHODS Sixty male Wistar rats were allocated into 3 groups: control (C), Pera orange juice (PO), and Moro orange juice (MO). PO and MO groups received Pera orange juice or Moro orange juice, respectively, and C received water with maltodextrin (100 g/L). Echocardiogram and euthanasia were performed after 4 weeks. Plasma metabolomic analysis was performed by high-resolution mass spectrometry. Type I collagen was evaluated in picrosirius red-stained slides and matrix metalloproteinase (MMP)-2 activity by zymography. MMP-9, tissue inhibitor of metalloproteinase (TIMP)-2, TIMP-4, type I collagen, and TNF-α protein expression were evaluated by Western blotting. RESULTS We differentially identified three metabolites in PO (N-docosahexaenoyl-phenylalanine, diglyceride, and phosphatidylethanolamine) and six in MO (N-formylmaleamic acid, N2-acetyl-L-ornithine, casegravol isovalerate, abscisic alcohol 11-glucoside, cyclic phosphatidic acid, and torvoside C), compared to controls, which are recognized for their possible roles in cardiac remodeling, such as extracellular matrix regulation, inflammation, oxidative stress, and membrane integrity. Cardiac function, collagen level, MMP-2 activity, and MMP-9, TIMP-2, TIMP-4, type I collagen, and TNF-α protein expression did not differ between groups. CONCLUSION Ingestion of Pera and Moro orange juice induces changes in plasma metabolites related to the regulation of extracellular matrix, inflammation, oxidative stress, and membrane integrity in healthy rats. Moro orange juice induces a larger number of differentially expressed metabolites than Pera orange juice. Alterations in plasma metabolomics induced by both orange juice are not associated with modifications in cardiac extracellular matrix components. Our results allow us to postulate that orange juice may have beneficial effects on pathological cardiac remodeling.
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Affiliation(s)
- Anderson S. S. Fujimori
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Ana P. D. Ribeiro
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Amanda G. Pereira
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Flávia L. Dias-Audibert
- Innovare Biomarkers Laboratory, School of Pharmaceutical Sciences, University of Campinas, Campinas 13083-970, Brazil; (F.L.D.-A.); (R.R.C.)
| | - Carolina R. Tonon
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Priscila P. dos Santos
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Danielle Dantas
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Silmeia G. Zanati
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Rodrigo R. Catharino
- Innovare Biomarkers Laboratory, School of Pharmaceutical Sciences, University of Campinas, Campinas 13083-970, Brazil; (F.L.D.-A.); (R.R.C.)
| | - Leonardo A. M. Zornoff
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Paula S. Azevedo
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Sergio A. R. de Paiva
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Marina P. Okoshi
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Estela O. Lima
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
| | - Bertha F. Polegato
- Internal Medicine Department, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil; (A.S.S.F.); (A.P.D.R.); (A.G.P.); (C.R.T.); (P.P.d.S.); (D.D.); (S.G.Z.); (L.A.M.Z.); (P.S.A.); (S.A.R.d.P.); (M.P.O.); (E.O.L.)
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8
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Arias-Alpizar G, Papadopoulou P, Rios X, Pulagam KR, Moradi MA, Pattipeiluhu R, Bussmann J, Sommerdijk N, Llop J, Kros A, Campbell F. Phase-Separated Liposomes Hijack Endogenous Lipoprotein Transport and Metabolism Pathways to Target Subsets of Endothelial Cells In Vivo. Adv Healthc Mater 2022; 12:e2202709. [PMID: 36565694 DOI: 10.1002/adhm.202202709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/14/2022] [Indexed: 12/25/2022]
Abstract
Plasma lipid transport and metabolism are essential to ensure correct cellular function throughout the body. Dynamically regulated in time and space, the well-characterized mechanisms underpinning plasma lipid transport and metabolism offers an enticing, but as yet underexplored, rationale to design synthetic lipid nanoparticles with inherent cell/tissue selectivity. Herein, a systemically administered liposome formulation, composed of just two lipids, that is capable of hijacking a triglyceride lipase-mediated lipid transport pathway resulting in liposome recognition and uptake within specific endothelial cell subsets is described. In the absence of targeting ligands, liposome-lipase interactions are mediated by a unique, phase-separated ("parachute") liposome morphology. Within the embryonic zebrafish, selective liposome accumulation is observed at the developing blood-brain barrier. In mice, extensive liposome accumulation within the liver and spleen - which is reduced, but not eliminated, following small molecule lipase inhibition - supports a role for endothelial lipase but highlights these liposomes are also subject to significant "off-target" by reticuloendothelial system organs. Overall, these compositionally simplistic liposomes offer new insights into the discovery and design of lipid-based nanoparticles that can exploit endogenous lipid transport and metabolism pathways to achieve cell selective targeting in vivo.
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Affiliation(s)
- Gabriela Arias-Alpizar
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands.,Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Panagiota Papadopoulou
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Xabier Rios
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Krishna Reddy Pulagam
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Mohammad-Amin Moradi
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, The Netherlands
| | - Roy Pattipeiluhu
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Jeroen Bussmann
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands.,Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Nico Sommerdijk
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525, The Netherlands.,Electron Microscopy Centre, Radboudumc Technology Center Microscopy, Radboud University Medical Center, Geert Grooteplein Zuid 28, Nijmegen, 6525, The Netherlands
| | - Jordi Llop
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, The Netherlands
| | - Alexander Kros
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Frederick Campbell
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
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9
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Zhu H, Wu Y, Zheng Y. Effects of heat shock on photosynthesis-related characteristics and lipid profile of Cycas multipinnata and C. panzhihuaensis. BMC PLANT BIOLOGY 2022; 22:442. [PMID: 36109687 PMCID: PMC9476270 DOI: 10.1186/s12870-022-03825-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Cycas multipinnata and C. panzhihuaensis are two attractive ornamental tree species. With the global climate change, the temperature in the natural habitats of both the species shows a marked rising trend. However, how the two species respond to extreme high temperatures are not clear. Chlorophyll fluorescence parameters, chlorophyll content, chloroplast ultrastructure and lipid metabolism in the two species were determined following plant exposure to heat stress. RESULTS The results demonstrated that the photosynthetic efficiency decreased significantly in both the species following heat shock and recovery, but to a greater extent in C. panzhihuaensis. Compared to the control, chlorophyll content of C. multipinnata did not change significantly following heat stress and recovery. However, chlorophyll content of C. panzhihuaensis increased significantly after 1 d of recovery in comparison with the control. Chloroplast ultrastructures of C. panzhihuaensis were more severely affected by heat shock than C. multipinnata. C. multipinnata and C. panzhihuaensis followed a similar change trend in the amounts of most of the lipid categories after heat stress. However, only the amounts of lysophospholipids and fatty acyls differed significantly between the two species following heat treatment. Additionally, the unsaturation levels of the major lipid classes in C. multipinnata were significantly lower than or equal to those in C. panzhihuaensis. CONCLUSIONS C. multipinnata was less affected by extremely high temperatures than C. panzhihuaensis. The differential stability of chlorophyll and chloroplast ultrastructure and the differential adjustment of lipid metabolism might contribute to the different responses to heat shock between the two species.
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Affiliation(s)
- Huan Zhu
- Key Laboratory of State Forestry and Grassland Administration for Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650233, Yunnan, China
| | - Yangyang Wu
- Key Laboratory of State Forestry and Grassland Administration for Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650233, Yunnan, China
| | - Yanling Zheng
- Key Laboratory of State Forestry and Grassland Administration for Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650233, Yunnan, China.
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10
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Heinonen S, Lautala S, Koivuniemi A, Bunker A. Insights into the behavior of unsaturated diacylglycerols in mixed lipid bilayers in relation to protein kinase C activation-A molecular dynamics simulation study. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:183961. [PMID: 35568204 DOI: 10.1016/j.bbamem.2022.183961] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 05/02/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
The lipid second messenger diacylglycerol (DAG) is known for its involvement in many types of cellular signaling, especially as an endogenous agonist for protein kinase C (PKC). Evidence has emerged that the degree of saturation of the DAG molecules can affect PKC activation. DAG molecules with different acyl chain saturation have not only been observed to induce varying extents of PKC activation, but also to express selectivity towards different PKC isozymes. Both qualities are important for precise therapeutic activation of PKC; understanding DAG behavior at the molecular level in different environments has much potential in the development of drugs to target PKC. We used molecular dynamics simulations to study the behavior of two different unsaturated DAG species in lipid environments with varying degrees of unsaturation. We focus on phosphatidylethanolamine (PE) instead of phosphatidylcholine (PC) to more accurately model the relevant biomembranes. The effect of cholesterol (CHOL) on these systems was also explored. We found that both high level of unsaturation in the acyl chains of the DAG species and presence of CHOL in the surrounding membrane increase DAG molecule availability at the lipid-water interface. This can partially explain the previously observed differences in PKC activation strength and specificity, the complete mechanism is, however, likely to be more complex. Our simulations coupled with the current understanding of lipids highlight the need for more simulations of biologically accurate lipid environments in order to determine the correct correlations between molecular mechanisms and biological behavior when studying PKC activation.
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Affiliation(s)
- Suvi Heinonen
- Drug Research Program, Division of Pharmaceutical Biosciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Saara Lautala
- Drug Research Program, Division of Pharmaceutical Biosciences, University of Helsinki, FI-00014, Helsinki, Finland.
| | - Artturi Koivuniemi
- Drug Research Program, Division of Pharmaceutical Biosciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Alex Bunker
- Drug Research Program, Division of Pharmaceutical Biosciences, University of Helsinki, FI-00014, Helsinki, Finland
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11
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Role of a bacterial glycolipid in Sec-independent membrane protein insertion. Sci Rep 2022; 12:12231. [PMID: 35851412 PMCID: PMC9293918 DOI: 10.1038/s41598-022-16304-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/07/2022] [Indexed: 11/08/2022] Open
Abstract
Non-proteinaceous components in membranes regulate membrane protein insertion cooperatively with proteinaceous translocons. An endogenous glycolipid in the Escherichia coli membrane called membrane protein integrase (MPIase) is one such component. Here, we focused on the Sec translocon-independent pathway and examined the mechanisms of MPIase-facilitated protein insertion using physicochemical techniques. We determined the membrane insertion efficiency of a small hydrophobic protein using solid-state nuclear magnetic resonance, which showed good agreement with that determined by the insertion assay using an in vitro translation system. The observed insertion efficiency was strongly correlated with membrane physicochemical properties measured using fluorescence techniques. Diacylglycerol, a trace component of E. coli membrane, reduced the acyl chain mobility in the core region and inhibited the insertion, whereas MPIase restored them. We observed the electrostatic intermolecular interactions between MPIase and the side chain of basic amino acids in the protein, suggesting that the negatively charged pyrophosphate of MPIase attracts the positively charged residues of a protein near the membrane surface, which triggers the insertion. Thus, this study demonstrated the ingenious approach of MPIase to support membrane insertion of proteins by using its unique molecular structure in various ways.
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12
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Membrane-active diacylglycerol-terminated thermoresponsive polymers: RAFT synthesis and biocompatibility evaluation. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Zhang D, Zhao L, Wang W, Wang Q, Liu J, Wang Y, Liu H, Shang B, Duan X, Sun H. Lipidomics reveals the changes in non-starch and starch lipids of rice (Oryza sativa L.) during storage. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2021.104205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Wang C, Gong Y, Deng F, Ding E, Tang J, Codling G, Challis JK, Green D, Wang J, Chen Q, Xie Y, Su S, Yang Z, Raine J, Jones PD, Tang S, Giesy JP. Remodeling of Arctic char (Salvelinus alpinus) lipidome under a stimulated scenario of Arctic warming. GLOBAL CHANGE BIOLOGY 2021; 27:3282-3298. [PMID: 33837644 DOI: 10.1111/gcb.15638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/14/2021] [Indexed: 06/12/2023]
Abstract
Arctic warming associated with global climate change poses a significant threat to populations of wildlife in the Arctic. Since lipids play a vital role in adaptation of organisms to variations in temperature, high-resolution mass-spectrometry-based lipidomics can provide insights into adaptive responses of organisms to a warmer environment in the Arctic and help to illustrate potential novel roles of lipids in the process of thermal adaption. In this study, we studied an ecologically and economically important species-Arctic char (Salvelinus alpinus)-with a detailed multi-tissue analysis of the lipidome in response to chronic shifts in temperature using a validated lipidomics workflow. In addition, dynamic alterations in the hepatic lipidome during the time course of shifts in temperature were also characterized. Our results showed that early life stages of Arctic char were more susceptible to variations in temperature. One-year-old Arctic char responded to chronic increases in temperature with coordinated regulation of lipids, including headgroup-specific remodeling of acyl chains in glycerophospholipids (GP) and extensive alterations in composition of lipids in membranes, such as less lyso-GPs, and more ether-GPs and sphingomyelin. Glycerolipids (e.g., triacylglycerol, TG) also participated in adaptive responses of the lipidome of Arctic char. Eight-week-old Arctic char exhibited rapid adaptive alterations of the hepatic lipidome to stepwise decreases in temperature while showing blunted responses to gradual increases in temperature, implying an inability to adapt rapidly to warmer environments. Three common phosphatidylethanolamines (PEs) (PE 36:6|PE 16:1_20:5, PE 38:7|PE 16:1_22:6, and PE 40:7|PE 18:1_22:6) were finally identified as candidate lipid biomarkers for temperature shifts via machine learning approach. Overall, this work provides additional information to a better understanding of underlying regulatory mechanisms of the lipidome of Arctic organisms in the face of near-future warming.
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Affiliation(s)
- Chao Wang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Yufeng Gong
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Fuchang Deng
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Enmin Ding
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jie Tang
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
- School of Resources and Environment, Anhui Agricultural University, Hefei, Anhui, China
| | - Garry Codling
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
- Research Centre for Contaminants in the Environment, Masaryk University, Brno, Czech Republic
| | | | - Derek Green
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Jing Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Qiliang Chen
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Yuwei Xie
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Shu Su
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Zilin Yang
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Jason Raine
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Paul D Jones
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Song Tang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
| | - John P Giesy
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK, Canada
- Department of Environmental Sciences, Baylor University, Waco, TX, USA
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China
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15
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Zulueta Díaz YDLM, Ambroggio EE, Fanani ML. Miltefosine inhibits the membrane remodeling caused by phospholipase action by changing membrane physical properties. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183407. [DOI: 10.1016/j.bbamem.2020.183407] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/23/2020] [Accepted: 06/29/2020] [Indexed: 01/04/2023]
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16
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Differential impact of synthetic antitumor lipid drugs on the membrane organization of phosphatidic acid and diacylglycerol monolayers. Chem Phys Lipids 2020; 229:104896. [PMID: 32184083 DOI: 10.1016/j.chemphyslip.2020.104896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 02/19/2020] [Accepted: 03/11/2020] [Indexed: 12/16/2022]
Abstract
Anti-tumour lipids are synthetic analogues of lysophosphatidylcholine. These drugs are both cytotoxic and cytostatic, and more interestingly, exert these effects preferentially in tumour cells. While the exact mechanism of action isn't fully elucidated, these drugs appear to preferentially partition into rigid lipid domains in cell membranes. Upon insertion, the compounds alter membrane domain organization, disrupt normal signal transduction, and cause cell death. Recently, it has been reported that these drugs induce accumulation of diacylglycerol in yeast cells which in turn sensitizes cells to the drugs. Conversely, phosphatidic acid accumulation appears to protect cells against the drugs. In the current work, the aim was to compare the biophysical effects of the drugs edelfosine, miltefosine and perifosine on monolayers of dimyristoyl phosphatidic acid, dimyristoyl glycerol and an equimolar mixture, to understand how these lipids modulate the mode of action. Surface pressure - area isotherms, compression moduli and Brewster angle microscopy were used to compare drug effects on lipid packing, monolayer compressibility and lateral domain organization of these films. Results suggest that edelfosine and miltefosine have stabilizing effects on all of the monolayers, while perifosine destabilizes dimyristoyl glycerol and the equimolar mixture. Additionally, all three drugs change the morphology of the domains observed. Based on these results the stabilization of diacylgylcerol by edelfosine and miltefosine may contribute to the mode of action as diacylglycerol is a known disruptor of bilayers. Perifosine however does not stabilize diacylglycerol, and therefore cell death may occur through a more direct inhibition of specific signal transduction. These results suggest that perifosine may illicit cytotoxicity through a different mechanism compared to the other antitumor lipid drugs.
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17
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Local accumulation of diacylglycerol alters membrane properties nonlinearly due to its transbilayer activity. Commun Chem 2019. [DOI: 10.1038/s42004-019-0175-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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18
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Nomura K, Yamaguchi T, Mori S, Fujikawa K, Nishiyama KI, Shimanouchi T, Tanimoto Y, Morigaki K, Shimamoto K. Alteration of Membrane Physicochemical Properties by Two Factors for Membrane Protein Integration. Biophys J 2019; 117:99-110. [PMID: 31164197 PMCID: PMC6626835 DOI: 10.1016/j.bpj.2019.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 12/01/2022] Open
Abstract
After a nascent chain of a membrane protein emerges from the ribosomal tunnel, the protein is integrated into the cell membrane. This process is controlled by a series of proteinaceous molecular devices, such as signal recognition particles and Sec translocons. In addition to these proteins, we discovered two endogenous components regulating membrane protein integration in the inner membrane of Escherichia coli. The integration is blocked by diacylglycerol (DAG), whereas the blocking is relieved by a glycolipid named membrane protein integrase (MPIase). Here, we investigated the influence of these integration-blocking and integration-promoting factors on the physicochemical properties of membrane lipids via solid-state NMR and fluorescence measurements. These factors did not have destructive effects on membrane morphology because the membrane maintained its lamellar structure and did not fuse in the presence of DAG and/or MPIase at their effective concentrations. We next focused on membrane flexibility. DAG did not affect the mobility of the membrane surface, whereas the sugar chain in MPIase was highly mobile and enhanced the flexibility of membrane lipid headgroups. Comparison with a synthetic MPIase analog revealed the effects of the long sugar chain on membrane properties. The acyl chain order inside the membrane was increased by DAG, whereas the increase was cancelled by the addition of MPIase. MPIase also loosened the membrane lipid packing. Focusing on the transbilayer movement, MPIase reduced the rapid flip-flop motion of DAG. On the other hand, MPIase could not compensate for the diminished lateral diffusion by DAG. These results suggest that by manipulating the membrane lipids dynamics, DAG inhibits the protein from contacting the inner membrane, whereas the flexible long sugar chain of MPIase increases the opportunity for interaction between the membrane and the protein, leading to membrane integration of the newly formed protein.
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Affiliation(s)
- Kaoru Nomura
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan.
| | - Toshiyuki Yamaguchi
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan
| | - Shoko Mori
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan
| | - Kohki Fujikawa
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan
| | - Ken-Ichi Nishiyama
- Department of Biological Chemistry and Food Sciences, Faculty of Agriculture, Iwate University, Morioka, Iwate, Japan
| | | | - Yasushi Tanimoto
- Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | | | - Keiko Shimamoto
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto, Japan.
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19
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Anheuser S, Breiden B, Sandhoff K. Membrane lipids and their degradation compounds control GM2 catabolism at intralysosomal luminal vesicles. J Lipid Res 2019; 60:1099-1111. [PMID: 30988135 DOI: 10.1194/jlr.m092551] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/11/2019] [Indexed: 12/12/2022] Open
Abstract
The catabolism of ganglioside GM2 is dependent on three gene products. Mutations in any of these genes result in a different type of GM2 gangliosidosis (Tay-Sachs disease, Sandhoff disease, and the B1 and AB variants of GM2 gangliosidosis), with GM2 as the major lysosomal storage compound. GM2 is also a secondary storage compound in lysosomal storage diseases such as Niemann-Pick disease types A-C, with primary storage of SM in type A and cholesterol in types B and C, respectively. The reconstitution of GM2 catabolism at liposomal surfaces carrying GM2 revealed that incorporating lipids into the GM2-carrying membrane such as cholesterol, SM, sphingosine, and sphinganine inhibits GM2 hydrolysis by β-hexosaminidase A assisted by GM2 activator protein, while anionic lipids, ceramide, fatty acids, lysophosphatidylcholine, and diacylglycerol stimulate GM2 catabolism. In contrast, the hydrolysis of the synthetic, water-soluble substrate 4-methylumbelliferyl-6-sulfo-2-acetamido-2-deoxy-β-d-glucopyranoside was neither significantly affected by membrane lipids such as ceramide or SM nor stimulated by anionic lipids such as bis(monoacylglycero)phosphate added as liposomes, detergent micelles, or lipid aggregates. Moreover, hydrolysis-inhibiting lipids also had an inhibiting effect on the solubilization and mobilization of membrane-bound lipids by the GM2 activator protein, while the stimulating lipids enhanced lipid mobilization.
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Affiliation(s)
- Susi Anheuser
- Membrane Biology and Lipid Biochemistry Unit, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Bernadette Breiden
- Membrane Biology and Lipid Biochemistry Unit, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Konrad Sandhoff
- Membrane Biology and Lipid Biochemistry Unit, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
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Heinonen HR, Mehine M, Mäkinen N, Pasanen A, Pitkänen E, Karhu A, Sarvilinna NS, Sjöberg J, Heikinheimo O, Bützow R, Aaltonen LA, Kaasinen E. Global metabolomic profiling of uterine leiomyomas. Br J Cancer 2017; 117:1855-1864. [PMID: 29073636 PMCID: PMC5729474 DOI: 10.1038/bjc.2017.361] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/18/2017] [Accepted: 09/21/2017] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Uterine leiomyomas can be classified into molecularly distinct subtypes according to their genetic triggers: MED12 mutations, HMGA2 upregulation, or inactivation of FH. The aim of this study was to identify metabolites and metabolic pathways that are dysregulated in different subtypes of leiomyomas. METHODS We performed global metabolomic profiling of 25 uterine leiomyomas and 17 corresponding myometrium specimens using liquid chromatography-tandem mass spectroscopy. RESULTS A total of 641 metabolites were detected. All leiomyomas displayed reduced homocarnosine and haeme metabolite levels. We identified a clearly distinct metabolomic profile for leiomyomas of the FH subtype, characterised by metabolic alterations in the tricarboxylic acid cycle and pentose phosphate pathways, and increased levels of multiple lipids and amino acids. Several metabolites were uniquely elevated in leiomyomas of the FH subtype, including N6-succinyladenosine and argininosuccinate, serving as potential biomarkers for FH deficiency. In contrast, leiomyomas of the MED12 subtype displayed reduced levels of vitamin A, multiple membrane lipids and amino acids, and dysregulation of vitamin C metabolism, a finding which was also compatible with gene expression data. CONCLUSIONS The study reveals the metabolomic heterogeneity of leiomyomas and provides the requisite framework for strategies designed to target metabolic alterations promoting the growth of these prevalent tumours.
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Affiliation(s)
- Hanna-Riikka Heinonen
- Department of Medical and Clinical Genetics and Genome-Scale Biology Research Program, University of Helsinki, P.O. Box 63, Helsinki FIN-00014, Finland
| | - Miika Mehine
- Department of Medical and Clinical Genetics and Genome-Scale Biology Research Program, University of Helsinki, P.O. Box 63, Helsinki FIN-00014, Finland
| | - Netta Mäkinen
- Department of Medical and Clinical Genetics and Genome-Scale Biology Research Program, University of Helsinki, P.O. Box 63, Helsinki FIN-00014, Finland
| | - Annukka Pasanen
- Department of Pathology, University of Helsinki and Helsinki University Hospital, P.O. Box 21, Helsinki FIN-00014, Finland
| | - Esa Pitkänen
- Department of Medical and Clinical Genetics and Genome-Scale Biology Research Program, University of Helsinki, P.O. Box 63, Helsinki FIN-00014, Finland
| | - Auli Karhu
- Department of Medical and Clinical Genetics and Genome-Scale Biology Research Program, University of Helsinki, P.O. Box 63, Helsinki FIN-00014, Finland
| | - Nanna S Sarvilinna
- Department of Obstetrics and Gynaecology, University of Helsinki and Helsinki University Hospital, P.O. Box 140, Helsinki FIN-00029, Finland
| | - Jari Sjöberg
- Department of Obstetrics and Gynaecology, University of Helsinki and Helsinki University Hospital, P.O. Box 140, Helsinki FIN-00029, Finland
| | - Oskari Heikinheimo
- Department of Obstetrics and Gynaecology, University of Helsinki and Helsinki University Hospital, P.O. Box 140, Helsinki FIN-00029, Finland
| | - Ralf Bützow
- Department of Pathology, University of Helsinki and Helsinki University Hospital, P.O. Box 21, Helsinki FIN-00014, Finland
| | - Lauri A Aaltonen
- Department of Medical and Clinical Genetics and Genome-Scale Biology Research Program, University of Helsinki, P.O. Box 63, Helsinki FIN-00014, Finland
| | - Eevi Kaasinen
- Division of Functional Genomics, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Scheeles Väg 2, Stockholm SE-17177, Sweden
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21
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Phospholipases during membrane dynamics in malaria parasites. Int J Med Microbiol 2017; 308:129-141. [PMID: 28988696 DOI: 10.1016/j.ijmm.2017.09.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 12/26/2022] Open
Abstract
Plasmodium parasites, the causative agents of malaria, display a well-regulated lipid metabolism required to ensure their survival in the human host as well as in the mosquito vector. The fine-tuning of lipid metabolic pathways is particularly important for the parasites during the rapid erythrocytic infection cycles, and thus enzymes involved in lipid metabolic processes represent prime targets for malaria chemotherapeutics. While plasmodial enzymes involved in lipid synthesis and acquisition have been studied in the past, to date not much is known about the roles of phospholipases for proliferation and transmission of the malaria parasite. These phospholipid-hydrolyzing esterases are crucial for membrane dynamics during host cell infection and egress by the parasite as well as for replication and cell signaling, and thus they are considered important virulence factors. In this review, we provide a comprehensive bioinformatic analysis of plasmodial phospholipases identified to date. We further summarize previous findings on the lipid metabolism of Plasmodium, highlight the roles of phospholipases during parasite life-cycle progression, and discuss the plasmodial phospholipases as potential targets for malaria therapy.
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22
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Alwarawrah M, Wereszczynski J. Investigation of the Effect of Bilayer Composition on PKCα-C2 Domain Docking Using Molecular Dynamics Simulations. J Phys Chem B 2016; 121:78-88. [PMID: 27997184 DOI: 10.1021/acs.jpcb.6b10188] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The protein kinase Cα (PKCα) enzyme is a member of a broad family of serine/threonine kinases, which are involved in varied cellular signaling pathways. The initial step of PKCα activation involves the C2 subunit docking with the cell membrane, which is followed by interactions of the C1 domains with diacylglycerol (DAG) in the membrane. Notably, the molecular mechanisms of these interactions remain poorly understood, especially what effects, if any, DAG may have on the initial C2 docking. To further understand this process, we have performed a series of conventional molecular dynamics simulations to systematically investigate the interaction between PKCα-C2 domains and lipid bilayers with different compositions to examine the effects of POPS, PIP2, and 1-palmitoyl-2-oleoyl-sn-glycerol (POG) on domain docking. Our results show that the PKCα-C2 domain does not interact with the bilayer surface in the absence of POPS and PIP2. In contrast, the inclusion of POPS and PIP2 to the bilayer resulted in strong domain docking in both perpendicular and parallel orientations, whereas the further inclusion of POG resulted in only parallel domain docking. In addition, lysine residues in the C2 domain formed hydrogen bonds with PIP2 molecule bilayers containing POG. These effects were further explored with umbrella sampling calculations to estimate the free energy of domain docking to the lipid bilayer in the presence of one or two PIP2 molecules. The results show that the binding of one or two PIP2 molecules is thermodynamically favorable, although stronger in bilayers lacking POG. However, in POG-containing bilayers, the binding mode of the C2 domain appears to be more flexible, which may have implications for activation of full-length PKCα. Together, our results shed new insights into the process of C2 bilayer binding and suggest new mechanisms for the roles of different phospholipids in the activation process of PKCα.
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Affiliation(s)
- Mohammad Alwarawrah
- Department of Physics and Center for Molecular Study of Condensed Soft Matter, Illinois Institute of Technology , Chicago 60616, Illinois, United States
| | - Jeff Wereszczynski
- Department of Physics and Center for Molecular Study of Condensed Soft Matter, Illinois Institute of Technology , Chicago 60616, Illinois, United States
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23
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Lorenz P, Knittel DN, Conrad J, Lotter EM, Heilmann J, Stintzing FC, Kammerer DR. 1-Acetyl-3-[(3R)-hydroxyfatty acyl]glycerols: Lipid Compounds fromEuphrasia rostkovianaHayneandE. tetraquetra(Bréb.)Arrond. Chem Biodivers 2016; 13:602-12. [DOI: 10.1002/cbdv.201500233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 02/04/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Peter Lorenz
- Department of Analytical Development & Research; Section Phytochemical Research; WALA Heilmittel GmbH; Dorfstr. 1 DE-73087 Bad Boll/Eckwälden
| | - Diana N. Knittel
- Department of Analytical Development & Research; Section Phytochemical Research; WALA Heilmittel GmbH; Dorfstr. 1 DE-73087 Bad Boll/Eckwälden
| | - Jürgen Conrad
- Institute of Chemistry, Bioorganic Chemistry; Hohenheim University; Garbenstraße 30 DE-70599 Stuttgart
| | - Eva M. Lotter
- Pharmaceutical Biology Department; University of Regensburg; Universitätsstraße 31 DE-93053 Regensburg
| | - Jörg Heilmann
- Pharmaceutical Biology Department; University of Regensburg; Universitätsstraße 31 DE-93053 Regensburg
| | - Florian C. Stintzing
- Department of Analytical Development & Research; Section Phytochemical Research; WALA Heilmittel GmbH; Dorfstr. 1 DE-73087 Bad Boll/Eckwälden
| | - Dietmar R. Kammerer
- Department of Analytical Development & Research; Section Phytochemical Research; WALA Heilmittel GmbH; Dorfstr. 1 DE-73087 Bad Boll/Eckwälden
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24
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Alwarawrah M, Hussain F, Huang J. Alteration of lipid membrane structure and dynamics by diacylglycerols with unsaturated chains. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1858:253-63. [PMID: 26607007 DOI: 10.1016/j.bbamem.2015.11.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 11/05/2015] [Accepted: 11/18/2015] [Indexed: 01/15/2023]
Abstract
Diacylglycerols (DAGs) with unsaturated acyl chains play many important roles in biomembranes, such as a second messenger and activator for protein kinase C. In this study, three DAGs of distinctly different chain unsaturations (i.e. di16:0DAG (DPG), 16:0-18:1DAG (POG), and di18:1DAG (DOG)) are studied using atomistic MD simulation to compare their roles in the structure and dynamics of 16:0-18:1phosphatidylcholine (POPC) membranes. All three DAGs are able to produce the so-called 'condensing effect' in POPC membranes: decreasing area-per-lipid, and increasing acyl chain order and bilayer thickness. Our visual and quantitative analyses clearly show that DAG with unsaturated chains induce larger spacing between POPC headgroups, compared with DAG with saturated chains; this particular effect has long been hypothesized to be crucial for activating enzymes and receptors in cell membranes. DAGs with unsaturated chains are also located closer to the bilayer/aqueous interface than DPG and are more effective in slowing down lateral diffusion of molecules. We show that DAG molecules seek the "umbrella coverage" from neighboring phospholipid headgroups - similar to cholesterol. Unlike cholesterol, DAGs also hide their chains from water by laterally inserting their chains into the surrounding. Thus, acyl chains of DAG are more spread and disordered than those of PC due to the insertion. By calculating the potential of mean force (PMF) for POPC in POPC/DAG bilayers, we found that all three DAGs can significantly increase the free energy barrier for POPC to flip-flop, but only DAGs with unsaturated chains can additionally increase the free energy of POPC desorption.
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Affiliation(s)
- Mohammad Alwarawrah
- Department of Physics, Texas Tech University, Lubbock, TX 79409, United States
| | - Fazle Hussain
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, United States
| | - Juyang Huang
- Department of Physics, Texas Tech University, Lubbock, TX 79409, United States.
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25
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Lipid Adaptation of Shrimp Rimicaris exoculata in Hydrothermal Vent. Lipids 2015; 50:1233-42. [DOI: 10.1007/s11745-015-4081-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 09/23/2015] [Indexed: 02/07/2023]
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26
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Peng H, Wu X, Zhao L, Feng Y. Dynamic analysis of phospholipid metabolism of mouse macrophages treated with common non-steroidal anti-inflammatory drugs. Mol Cell Biochem 2015; 411:161-71. [DOI: 10.1007/s11010-015-2578-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/26/2015] [Indexed: 11/28/2022]
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27
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Wang X, Xiao J, Zou W, Han Z, Jin Q, Wang X. Improved enzymatic synthesis route for highly purified diacid 1,3-diacylglycerols. Process Biochem 2015. [DOI: 10.1016/j.procbio.2014.12.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Nagashima T, Uematsu S. Water-binding phospholipid nanodomains and phase-separated diacylglycerol nanodomains regulate enzyme reactions in lipid monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1479-1488. [PMID: 25565217 DOI: 10.1021/la503906m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Phospholipid 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) nanodomains covered with bound water as well as diacylglycerol 1-palmitoyl-2-oleoyl-sn-glycerol (POG) nanodomains separated from a lipid membrane were studied, using monolayer surfaces of POPC hydrolyzed by phospholipase C (PLC). The investigation was based on the analysis of compression isotherms and on atomic force microscope (AFM) observations of Langmuir-Blodgett (LB) films and Langmuir-Schaefer (LS) films. The results included reaction rate constants obtained by kinetic analysis of phosphocholine at surface pressures from 0.1 to 31 mN/m and determined by a luminol-enhanced chemiluminescence method. Monolayer elastic modulus values and fluorescence microscopic images confirmed that hydrolysis by PLC progressed in the intermediate monolayer between a liquid-expanded (L1) film and a liquid-condensed (L2) film at 2-17 mN/m. Furthermore, the intermediate film was confirmed to consist of L1 film and the POPC nanodomains in the L2 state are covered with bound water, conclusions based on the following AFM results: (1) nanodomains in POPC LS films were catalyzed by PLC, (2) POG nanodomains extended out from LB films of mixed POPC/POG 9/1 (mol/mol) monolayers, and (3) POPC LS films were covered with bound water, as indicated by cross-sectional analysis. At the optimal surface pressure of 10 mN/m, when POPC nanodomains (L2), with internal diameters of ∼75 nm, were hydrolyzed by PLC, they shrank down into pockets of the same size as those that appeared with POG. The resulting pocket sizes on LS films were in agreement with POG nanodomain sizes on LB films. This study demonstrated that PLC reacted with POPC nanodomains (L2) dispersed in L1/L2 mixed phase monolayers selectively and that POG nanodomains were phase-separated from the monolayer as hydrolysis proceeded.
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Affiliation(s)
- Teruyoshi Nagashima
- Department of Physical Biochemistry, Graduate School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga Ward, Shizuoka City, Shizuoka 422-8526, Japan
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29
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Eni SE, Rowland M, Best MD. Retracted Article: Synthesis of diacylglycerol analogs bearing photoaffinity tags for labelling mammalian diacylglycerol kinase. RSC Adv 2015. [DOI: 10.1039/c4ra16730a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This communication reports the synthesis of diacylglycerol (DAG) probes with different photoaffinity tags for cross-linking and reducing the activity diacylglycerol kinase (DGK).
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Affiliation(s)
- Sammy Eni Eni
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| | - Meng Rowland
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
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30
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Ueda Y, Ishitsuka R, Hullin-Matsuda F, Kobayashi T. Regulation of the transbilayer movement of diacylglycerol in the plasma membrane. Biochimie 2014; 107 Pt A:43-50. [DOI: 10.1016/j.biochi.2014.09.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 09/09/2014] [Indexed: 12/27/2022]
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31
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Egea-Jiménez AL, Corbalán-García S, Gómez-Fernández JC. The C1B domains of novel PKCε and PKCη have a higher membrane binding affinity than those of the also novel PKCδ and PKCθ. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:1898-909. [DOI: 10.1016/j.bbamem.2014.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 03/28/2014] [Accepted: 04/02/2014] [Indexed: 10/25/2022]
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32
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Sadat MA, Jeon J, Mir AA, Choi J, Choi J, Lee YH. Regulation of cellular diacylglycerol through lipid phosphate phosphatases is required for pathogenesis of the rice blast fungus, Magnaporthe oryzae. PLoS One 2014; 9:e100726. [PMID: 24959955 PMCID: PMC4069076 DOI: 10.1371/journal.pone.0100726] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 05/26/2014] [Indexed: 11/18/2022] Open
Abstract
Considering implication of diacylglycerol in both metabolism and signaling pathways, maintaining proper levels of diacylglycerol (DAG) is critical to cellular homeostasis and development. Except the PIP2-PLC mediated pathway, metabolic pathways leading to generation of DAG converge on dephosphorylation of phosphatidic acid catalyzed by lipid phosphate phosphatases. Here we report the role of such enzymes in a model plant pathogenic fungus, Magnaporthe oryzae. We identified five genes encoding putative lipid phosphate phosphatases (MoLPP1 to MoLPP5). Targeted disruption of four genes (except MoLPP4) showed that MoLPP3 and MoLPP5 are required for normal progression of infection-specific development and proliferation within host plants, whereas MoLPP1 and MoLPP2 are indispensable for fungal pathogenicity. Reintroduction of MoLPP3 and MoLPP5 into individual deletion mutants restored all the defects. Furthermore, exogenous addition of saturated DAG not only restored defect in appressorium formation but also complemented reduced virulence in both mutants. Taken together, our data indicate differential roles of lipid phosphate phosphatase genes and requirement of proper regulation of cellular DAGs for fungal development and pathogenesis.
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Affiliation(s)
- Md. Abu Sadat
- Department of Agricultural Biotechnology, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - Junhyun Jeon
- Department of Agricultural Biotechnology, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - Albely Afifa Mir
- Department of Agricultural Biotechnology, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - Jaeyoung Choi
- Department of Agricultural Biotechnology, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - Jaehyuk Choi
- Center for Fungal Pathogenesis, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
- Center for Fungal Pathogenesis, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
- Center for Fungal Genetic Resources, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
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Functions of the C-terminal domains of apoptosis-related proteins of the Bcl-2 family. Chem Phys Lipids 2014; 183:77-90. [PMID: 24892727 DOI: 10.1016/j.chemphyslip.2014.05.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/12/2014] [Accepted: 05/13/2014] [Indexed: 02/06/2023]
Abstract
Bcl-2 family proteins are involved in cell homeostasis, where they regulate cell death. Some of these proteins are pro-apoptotic and others pro-survival. Moreover, many of them share a similar domain composition with several of the so-called BH domains, although some only have a BH3 domain. A C-terminal domain is present in all the multi-BH domain proteins and in some of the BH3-only ones. This C-terminal domain is hydrophobic or amphipathic, for which reason it was thought when they were discovered that they were membrane anchors. Although this is indeed one of their functions, it has since been observed that they may also serve as regulators of the function of some members of this family, such as Bax. They may also serve to recognize the target membrane of some of these proteins, which only after an apoptotic signal, are incorporated into a membrane. It has been shown that peptides that imitate the sequence of C-terminal domains can form pores and may serve as a model to design cytotoxic molecules.
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Egea-Jiménez AL, Fernández-Martínez AM, Pérez-Lara Á, de Godos A, Corbalán-García S, Gómez-Fernández JC. Phosphatidylinositol-4,5-bisphosphate enhances anionic lipid demixing by the C2 domain of PKCα. PLoS One 2014; 9:e95973. [PMID: 24763383 PMCID: PMC3999146 DOI: 10.1371/journal.pone.0095973] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Accepted: 03/31/2014] [Indexed: 11/19/2022] Open
Abstract
The C2 domain of PKCα (C2α) induces fluorescence self-quenching of NBD-PS in the presence of Ca2+, which is interpreted as the demixing of phosphatidylserine from a mixture of this phospholipid with phosphatidylcholine. Self-quenching of NBD-PS was considerably increased when phosphatidylinositol-4,5-bisphosphate (PIP2) was present in the membrane. When PIP2 was the labeled phospholipid, in the form of TopFluor-PIP2, fluorescence self-quenching induced by the C2 domain was also observed, but this was dependent on the presence of phosphatidylserine. An independent indication of the phospholipid demixing effect given by the C2α domain was obtained by using 2H-NMR, since a shift of the transition temperature of deuterated phosphatidylcholine was observed as a consequence of the addition of the C2α domain, but only in the presence of PIP2. The demixing induced by the C2α domain may have a physiological significance since it means that the binding of PKCα to membranes is accompanied by the formation of domains enriched in activating lipids, like phosphatidylserine and PIP2. The formation of these domains may enhance the activation of the enzyme when it binds to membranes containing phosphatidylserine and PIP2.
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Affiliation(s)
- Antonio L. Egea-Jiménez
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia, Spain
| | - Ana M. Fernández-Martínez
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia, Spain
| | - Ángel Pérez-Lara
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia, Spain
| | - Ana de Godos
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia, Spain
| | - Senena Corbalán-García
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia, Spain
| | - Juan C. Gómez-Fernández
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia, Spain
- * E-mail:
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Classical protein kinases C are regulated by concerted interaction with lipids: the importance of phosphatidylinositol-4,5-bisphosphate. Biophys Rev 2013; 6:3-14. [PMID: 28509956 DOI: 10.1007/s12551-013-0125-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 10/03/2013] [Indexed: 10/26/2022] Open
Abstract
Classical protein kinase C (PKC) enzymes are known to be important factors in cell physiology both in terms of health and disease. They are activated by triggering signals that induce their translocation to membranes. The consensus view is that several secondary messengers are involved in this activation, such as cytosolic Ca2+ and diacylglycerol. Cytosolic Ca2+ bridges the C2 domain to anionic phospholipids as phosphatidylserine in the membrane, and diacylglycerol binds to the C1 domain. Both diacylglycerol and the increase in Ca2+ concentration are assumed to arise from the extracellular signal that triggers the hydrolysis of phosphatidylinositol-4,5-bisphosphate. However, results obtained during the last decade indicate that this phosphoinositide itself is also responsible for modulating classical PKC activity and its localization in the plasma membrane.
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36
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Best MD. Global approaches for the elucidation of phosphoinositide-binding proteins. Chem Phys Lipids 2013; 182:19-28. [PMID: 24220499 DOI: 10.1016/j.chemphyslip.2013.10.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 09/13/2013] [Accepted: 10/29/2013] [Indexed: 12/22/2022]
Abstract
Phosphoinositide lipids (PIPns) control numerous critical biological pathways, typically through the regulation of protein function driven by non-covalent protein-lipid binding interactions. Despite the importance of these systems, the unraveling of the full scope of protein-PIPn interactions has represented a significant challenge due to the massive complexity associated with these events, including the large number of diverse proteins that bind to these lipids, variations in the mechanisms by which proteins bind to lipids, and the presence of multiple distinct PIPn isomers. As a result of this complexity, global methods in which numerous proteins that bind PIPns can be identified and characterized simultaneously from complex samples, which have been enabled by key technological advancements, have become popular as an efficient means for tackling this challenge. This review article provides an overview of advancements in large-scale methods for profiling protein-PIPn binding, including experimental methods, such as affinity enrichment, microarray analysis and activity-based protein profiling, as well as computational methods, and combined computational/experimental efforts.
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Affiliation(s)
- Michael D Best
- Department of Chemistry, The University of Tennessee, 1420 Circle Drive, Knoxville, TN 37996, United States.
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Egea-Jiménez AL, Pérez-Lara Á, Corbalán-García S, Gómez-Fernández JC. Phosphatidylinositol 4,5-bisphosphate decreases the concentration of Ca2+, phosphatidylserine and diacylglycerol required for protein kinase C α to reach maximum activity. PLoS One 2013; 8:e69041. [PMID: 23874859 PMCID: PMC3707892 DOI: 10.1371/journal.pone.0069041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 06/05/2013] [Indexed: 11/18/2022] Open
Abstract
The C2 domain of PKCα possesses two different binding sites, one for Ca(2+) and phosphatidylserine and a second one that binds PIP2 with very high affinity. The enzymatic activity of PKCα was studied by activating it with large unilamellar lipid vesicles, varying the concentration of Ca(2+) and the contents of dioleylglycerol (DOG), phosphatidylinositol 4,5-bisphosphate (PIP2) and phosphadidylserine (POPS) in these model membranes. The results showed that PIP2 increased the Vmax of PKCα and, when the PIP2 concentration was 5 mol% of the total lipid in the membrane, the addition of 2 mol% of DOG did not increase the activity. In addition PIP2 decreases K0.5 of Ca(2+) more than 3-fold, that of DOG almost 5-fold and that of POPS by a half. The K0.5 values of PIP2 amounted to only 0.11 µM in the presence of DOG and 0.39 in its absence, which is within the expected physiological range for the inner monolayer of a mammalian plasma membrane. As a consequence, PKCα may be expected to operate near its maximum capacity even in the absence of a cell signal producing diacylglycerol. Nevertheless, we have shown that the presence of DOG may also help, since the K0.5 for PIP2 notably decreases in its presence. Taken together, these results underline the great importance of PIP2 in the activation of PKCα and demonstrate that in its presence, the most important cell signal for triggering the activity of this enzyme is the increase in the concentration of cytoplasmic Ca(2+).
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Affiliation(s)
- Antonio L. Egea-Jiménez
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Ángel Pérez-Lara
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Senena Corbalán-García
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Juan C. Gómez-Fernández
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
- * E-mail:
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Balgoma D, Checa A, Sar DG, Snowden S, Wheelock CE. Quantitative metabolic profiling of lipid mediators. Mol Nutr Food Res 2013; 57:1359-77. [PMID: 23828856 DOI: 10.1002/mnfr.201200840] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 05/07/2013] [Accepted: 05/08/2013] [Indexed: 12/25/2022]
Abstract
Lipids are heterogeneous biological molecules that possess multiple physiological roles including cell structure, homeostasis, and restoration of tissue functionality during and after inflammation. Lipid metabolism constitutes a network of pathways that are related at multiple biosynthetic hubs. Disregulation of lipid metabolism can lead to pathophysiological effects and multiple lipid mediators have been described to be involved in physiological processes, (e.g. inflammation). Accordingly, a thorough description of these pathways may shed light on putative relations in multiple complex diseases, including chronic obstructive pulmonary disease, asthma, Alzheimer's disease, multiple sclerosis, obesity, and cancer. Due to the structural complexity of lipids and the low abundance of many lipid mediators, mass spectrometry is the most commonly employed method for analysis. However, multiple challenges remain in the efforts to analyze every lipid subfamily. In this review, the biological role of sphingolipids, glycerolipids, oxylipins (e.g. eicosanoids), endocannabinoids, and N-acylethanolamines in relation to health and disease and the state-of-the-art analyses are summarized. The characterization and understanding of these pathways will increase our ability to examine for interrelations among lipid pathways and improve the knowledge of biological mechanisms in health and disease.
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Affiliation(s)
- David Balgoma
- Department of Medical Biochemistry and Biophysics, Division of Physiological Chemistry II, Karolinska Institutet, Stockholm, Sweden
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Mencarelli C, Martinez–Martinez P. Ceramide function in the brain: when a slight tilt is enough. Cell Mol Life Sci 2013; 70:181-203. [PMID: 22729185 PMCID: PMC3535405 DOI: 10.1007/s00018-012-1038-x] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 05/16/2012] [Accepted: 05/21/2012] [Indexed: 12/14/2022]
Abstract
Ceramide, the precursor of all complex sphingolipids, is a potent signaling molecule that mediates key events of cellular pathophysiology. In the nervous system, the sphingolipid metabolism has an important impact. Neurons are polarized cells and their normal functions, such as neuronal connectivity and synaptic transmission, rely on selective trafficking of molecules across plasma membrane. Sphingolipids are abundant on neural cellular membranes and represent potent regulators of brain homeostasis. Ceramide intracellular levels are fine-tuned and alteration of the sphingolipid-ceramide profile contributes to the development of age-related, neurological and neuroinflammatory diseases. The purpose of this review is to guide the reader towards a better understanding of the sphingolipid-ceramide pathway system. First, ceramide biology is presented including structure, physical properties and metabolism. Second, we describe the function of ceramide as a lipid second messenger in cell physiology. Finally, we highlight the relevance of sphingolipids and ceramide in the progression of different neurodegenerative diseases.
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Affiliation(s)
- Chiara Mencarelli
- Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - Pilar Martinez–Martinez
- Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
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40
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Pokotylo I, Pejchar P, Potocký M, Kocourková D, Krčková Z, Ruelland E, Kravets V, Martinec J. The plant non-specific phospholipase C gene family. Novel competitors in lipid signalling. Prog Lipid Res 2012; 52:62-79. [PMID: 23089468 DOI: 10.1016/j.plipres.2012.09.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 09/25/2012] [Accepted: 09/25/2012] [Indexed: 11/16/2022]
Abstract
Non-specific phospholipases C (NPCs) were discovered as a novel type of plant phospholipid-cleaving enzyme homologous to bacterial phosphatidylcholine-specific phospholipases C and responsible for lipid conversion during phosphate-limiting conditions. The six-gene family was established in Arabidopsis, and growing evidence suggests the involvement of two articles NPCs in biotic and abiotic stress responses as well as phytohormone actions. In addition, the diacylglycerol produced via NPCs is postulated to participate in membrane remodelling, general lipid metabolism and cross-talk with other phospholipid signalling systems in plants. This review summarises information concerning this new plant protein family and focusses on its sequence analysis, biochemical properties, cellular and tissue distribution and physiological functions. Possible modes of action are also discussed.
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Affiliation(s)
- Igor Pokotylo
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
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Dong W, Lv H, Xia G, Wang M. Does diacylglycerol serve as a signaling molecule in plants? PLANT SIGNALING & BEHAVIOR 2012; 7:472-5. [PMID: 22499171 PMCID: PMC3419036 DOI: 10.4161/psb.19644] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Diacylglycerol (DAG) is an important signaling phospholipid in animals, specifically binding to the C1 domain of proteins such as protein kinase C. In most plant species, however, DAG is present at low abundance, and no interacting proteins have yet been identified. As a result, it has been proposed that the signaling function of DAG has been discarded by plants during their evolution. In this mini-review, we summarize the accumulating experimental evidence which supports that notion that changes in DAG content in response to particular cues are a feature of plant cells. This behavior suggests that DAG does indeed act as a signaling molecule during plant development and in response to certain environmental stimuli.
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Alwarawrah M, Dai J, Huang J. Modification of Lipid Bilayer Structure by Diacylglycerol: A Comparative Study of Diacylglycerol and Cholesterol. J Chem Theory Comput 2012; 8:749-758. [PMID: 22389636 PMCID: PMC3289152 DOI: 10.1021/ct200790q] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Diacylglycerols (DAGs) are important second messengers in biomembranes, and they can activate protein kinase C and many other enzymes and receptors. However, their interactions with cholesterol and other lipids have not been previously studied using molecular dynamics (MD) simulation. In this study, nine independent atomistic MD simulations were performed to specifically investigate the interactions between di16:0DAG, 16:0,18:1-phosphatidylcholine (POPC), and cholesterol. Despite of their substantial differences in chemical structure, DAG and cholesterol produce some very similar effects in POPC bilayers: increasing acyl chain order and bilayer thickness, reducing volume-per-lipid, and decreasing lateral diffusion of molecules. More significantly, DAG also produces a strong "condensing effect" in PC bilayers. In comparison, cholesterol is more effective than DAG in producing the above effects. The driving force for the condensing effect is their molecular shape: DAG and cholesterol both have small polar headgroups and large hydrophobic bodies. In a lipid bilayer, in order to avoid the unfavorable exposure of their hydrophobic parts to water, neighboring phospholipid headgroups move toward cholesterol or DAG to provide cover. Thus, seemingly complex interactions between DAG, cholesterol and phospholipid can be clearly explained using the Umbrella Model. Our simulations confirmed the hypothesis that DAG increases the spacing between phospholipid headgroups, which is important for activating protein kinase C and other enzymes. Interestingly, our simulations also show that the conventional wisdom that the spacing created by a DAG is directly above the DAG molecule is incorrect; instead, the largest spacing usually occurs between the first and the second nearest-neighbor PC headgroups from a DAG, due to the umbrella effect.
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Affiliation(s)
| | - Jian Dai
- Department of Physics Texas Tech University Lubbock, Texas 79409
| | - Juyang Huang
- Department of Physics Texas Tech University Lubbock, Texas 79409
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Bennett WFD, Tieleman DP. Molecular simulation of rapid translocation of cholesterol, diacylglycerol, and ceramide in model raft and nonraft membranes. J Lipid Res 2012; 53:421-429. [PMID: 22246847 DOI: 10.1194/jlr.m022491] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The translocation of lipids across membranes (flip-flop) is an important biological process. Slow exchange on a physiological timescale allows the creation of asymmetric distributions of lipids across cellular membranes. The location of lipids and their rate of exchange have important biological consequences, especially for lipids involved in cellular signaling. We investigated the translocation of cholesterol, ceramide, and diacylglycerol in two model bilayers using molecular dynamics simulations. We estimate half times for flip-flop for cholesterol, diacylglycerol, and ceramide of 20 μs, 30 μs, and 10 ms in a POPC bilayer, compared with approximately 30 min, 30 ms, and 30 s in a model raft bilayer (1:1:1 PSM, POPC, and cholesterol). Cholesterol has a large (54 kJ/mol) free energy of exchange between the POPC and raft bilayer, and therefore, it strongly prefers the more ordered and rigid raft bilayer over the more liquid POPC bilayer. Ceramide and diacylglycerol have relatively small free energies of exchange, suggesting nearly equal preference for both bilayers. This unexpected result may have implications for ceramide and diacylglycerol signaling and membrane localization.
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Affiliation(s)
- W F Drew Bennett
- Department of Biological Sciences and Institute for Biocomplexity and Informatics, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - D Peter Tieleman
- Department of Biological Sciences and Institute for Biocomplexity and Informatics, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
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Best MD, Rowland MM, Bostic HE. Exploiting bioorthogonal chemistry to elucidate protein-lipid binding interactions and other biological roles of phospholipids. Acc Chem Res 2011; 44:686-98. [PMID: 21548554 DOI: 10.1021/ar200060y] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Lipids play critical roles in a litany of physiological and pathophysiological events, often through the regulation of protein function. These activities are generally difficult to characterize, however, because the membrane environment in which lipids operate is very complex. Moreover, lipids have a diverse range of biological functions, including the recruitment of proteins to membrane surfaces, actions as small-molecule ligands, and covalent protein modification through lipidation. Advancements in the development of bioorthogonal reactions have facilitated the study of lipid activities by providing the ability to selectively label probes bearing bioorthogonal tags within complex biological samples. In this Account, we discuss recent efforts to harness the beneficial properties of bioorthogonal labeling strategies in elucidating lipid function. Initially, we summarize strategies for the design and synthesis of lipid probes bearing bioorthogonal tags. This discussion includes issues to be considered when deciding where to incorporate the tag, particularly the presentation within a membrane environment. We then present examples of the application of these probes to the study of lipid activities, with a particular emphasis on the elucidation of protein-lipid binding interactions. One such application involves the development of lipid and membrane microarray analysis as a high-throughput platform for characterizing protein-binding interactions. Here we discuss separate strategies for binding analysis involving the immobilization of either whole liposomes or simplified isolated lipid structures. In addition, we present the different strategies that have been used to derivatize membrane surfaces via bioorthogonal reactions, either by using this chemistry to produce functionalized lipid scaffolds that can be incorporated into membranes or through direct modification of intact membrane surfaces. We then provide an overview of the development of lipid activity probes to label and identify proteins that bind to a particular lipid from complex biological samples. This process involves the strategy of activity-based proteomics, in which proteins are collectively labeled on the basis of function (in this case, ligand binding) rather than abundance. We summarize strategies for designing and applying lipid activity probes that allow for the selective labeling and characterization of protein targets. Additionally, we briefly comment on applications other than studying protein-lipid binding. These include the generation of new lipid structures with beneficial properties, labeling of tagged lipids in live cells for studies involving fluorescence imaging, elucidation of covalent protein lipidation, and identification of biosynthetic lipid intermediates. These applications illustrate the early phase of the promising field of applying bioorthogonal chemistry to the study of lipid function.
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Affiliation(s)
- Michael D. Best
- Department of Chemistry, the University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Meng M. Rowland
- Department of Chemistry, the University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Heidi E. Bostic
- Department of Chemistry, the University of Tennessee, Knoxville, Tennessee 37996, United States
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Tyler AII, Shearman GC, Brooks NJ, Delacroix H, Law RV, Templer RH, Ces O, Seddon JM. Hydrostatic pressure effects on a hydrated lipid inverse micellar Fd3m cubic phase. Phys Chem Chem Phys 2011; 13:3033-8. [DOI: 10.1039/c0cp01783c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Lorente-Rodríguez A, Barlowe C. Requirement for Golgi-localized PI(4)P in fusion of COPII vesicles with Golgi compartments. Mol Biol Cell 2010; 22:216-29. [PMID: 21119004 PMCID: PMC3020917 DOI: 10.1091/mbc.e10-04-0317] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The role of specific membrane lipids in ER-Golgi transport is unclear. Using cell-free assays that measure stages in ER-Golgi transport, a variety of enzyme inhibitors, lipid-modifying enzymes, and lipid ligands were screened. The results indicate that PI(4)P is required for SNARE-dependent fusion of COPII vesicles with the Golgi complex. The role of specific membrane lipids in transport between endoplasmic reticulum (ER) and Golgi compartments is poorly understood. Using cell-free assays that measure stages in ER-to-Golgi transport, we screened a variety of enzyme inhibitors, lipid-modifying enzymes, and lipid ligands to investigate requirements in yeast. The pleckstrin homology (PH) domain of human Fapp1, which binds phosphatidylinositol-4-phosphate (PI(4)P) specifically, was a strong and specific inhibitor of anterograde transport. Analysis of wild type and mutant PH domain proteins in addition to recombinant versions of the Sac1p phosphoinositide-phosphatase indicated that PI(4)P was required on Golgi membranes for fusion with coat protein complex II (COPII) vesicles. PI(4)P inhibition did not prevent vesicle tethering but significantly reduced formation of soluble n-ethylmaleimide sensitive factor adaptor protein receptor (SNARE) complexes between vesicle and Golgi SNARE proteins. Moreover, semi-intact cell membranes containing elevated levels of the ER-Golgi SNARE proteins and Sly1p were less sensitive to PI(4)P inhibitors. Finally, in vivo analyses of a pik1 mutant strain showed that inhibition of PI(4)P synthesis blocked anterograde transport from the ER to early Golgi compartments. Together, the data presented here indicate that PI(4)P is required for the SNARE-dependent fusion stage of COPII vesicles with the Golgi complex.
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Pejchar P, Potocký M, Novotná Z, Veselková S, Kocourková D, Valentová O, Schwarzerová K, Martinec J. Aluminium ions inhibit the formation of diacylglycerol generated by phosphatidylcholine-hydrolysing phospholipase C in tobacco cells. THE NEW PHYTOLOGIST 2010; 188:150-60. [PMID: 20629955 DOI: 10.1111/j.1469-8137.2010.03349.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
• Aluminium ions (Al) have been recognized as a major toxic factor for crop production in acidic soils. This study aimed to assess the impact of Al on the activity of phosphatidylcholine-hydrolysing phospholipase C (PC-PLC), a new member of the plant phospholipase family. • We labelled the tobacco cell line BY-2 and pollen tubes with a fluorescent derivative of phosphatidylcholine and assayed for patterns of fluorescently labelled products. Growth of pollen tubes was analysed. • We observed a significant decrease of labelled diacylglycerol (DAG) in cells treated with AlCl(3). Investigation of possible metabolic pathways that control DAG generation and consumption during the response to Al showed that DAG originated from the reaction catalysed by PC-PLC. The growth of pollen tubes was retarded in the presence of Al and this effect was accompanied by the decrease of labelled DAG similar to the case of the BY-2 cell line. The growth of pollen tubes arrested by Al was rescued by externally added DAG. • Our observation strongly supports the role of DAG generated by PC-PLC in the response of tobacco cells to Al.
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Affiliation(s)
- Premysl Pejchar
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, v. v. i., Rozvojová 263, 165 02 Prague 6, Czech Republic
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Best MD, Zhang H, Prestwich GD. Inositol polyphosphates, diphosphoinositol polyphosphates and phosphatidylinositol polyphosphate lipids: Structure, synthesis, and development of probes for studying biological activity. Nat Prod Rep 2010; 27:1403-30. [DOI: 10.1039/b923844c] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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