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van Vliet AR, Jefferies HBJ, Faull PA, Chadwick J, Ibrahim F, Skehel MJ, Tooze SA. Exploring the ATG9A interactome uncovers interaction with VPS13A. J Cell Sci 2024; 137:jcs261081. [PMID: 38294121 PMCID: PMC10911177 DOI: 10.1242/jcs.261081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 01/17/2024] [Indexed: 02/01/2024] Open
Abstract
ATG9A, a transmembrane protein of the core autophagy pathway, cycles between the Golgi, endosomes and a vesicular compartment. ATG9A was recently shown to act as a lipid scramblase, and this function is thought to require its interaction with another core autophagy protein, ATG2A, which acts as a lipid transfer protein. Together, ATG9A and ATG2A are proposed to function to expand the growing autophagosome. However, ATG9A is implicated in other pathways including membrane repair and lipid droplet homeostasis. To elucidate other ATG9A interactors within the autophagy pathway, or interactors beyond autophagy, we performed an interactome analysis through mass spectrometry. This analysis revealed a host of proteins involved in lipid synthesis and trafficking, including ACSL3, VPS13A and VPS13C. Furthermore, we show that ATG9A directly interacts with VPS13A and forms a complex that is distinct from the ATG9A-ATG2A complex.
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Affiliation(s)
| | | | - Peter A. Faull
- Proteomics Science Technology Platform, The Francis Crick Institute, London NW1 1AT, UK
| | | | - Fairouz Ibrahim
- Proteomics Science Technology Platform, The Francis Crick Institute, London NW1 1AT, UK
| | - Mark J. Skehel
- Proteomics Science Technology Platform, The Francis Crick Institute, London NW1 1AT, UK
| | - Sharon A. Tooze
- Molecular Cell Biology of Autophagy, The Francis Crick Institute, London NW1 1AT, UK
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2
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Mueller-Schuessele SJ, Leterme S, Michaud M. Plastid Transient and Stable Interactions with Other Cell Compartments. Methods Mol Biol 2024; 2776:107-134. [PMID: 38502500 DOI: 10.1007/978-1-0716-3726-5_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Plastids are organelles delineated by two envelopes playing important roles in different cellular processes such as energy production or lipid biosynthesis. To regulate their biogenesis and their function, plastids have to communicate with other cellular compartments. This communication can be mediated by metabolites, signaling molecules, and by the establishment of direct contacts between the plastid envelope and other organelles such as the endoplasmic reticulum, mitochondria, peroxisomes, plasma membrane, and the nucleus. These interactions are highly dynamic and respond to different biotic and abiotic stresses. However, the mechanisms involved in the formation of plastid-organelle contact sites and their functions are still far from being understood. In this chapter, we summarize our current knowledge about plastid contact sites and their role in the regulation of plastid biogenesis and function.
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Affiliation(s)
| | - Sébastien Leterme
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France
| | - Morgane Michaud
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France.
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3
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Ishitsuka Y, Irie T, Matsuo M. Cyclodextrins applied to the treatment of lysosomal storage disorders. Adv Drug Deliv Rev 2022; 191:114617. [PMID: 36356931 DOI: 10.1016/j.addr.2022.114617] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 09/14/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022]
Abstract
Cyclodextrin (CD), a cyclic oligosaccharide, is a pharmaceutical additive that improves the solubility of hydrophobic compounds. Recent research has focused on the potential active pharmaceutical abilities of CD. Lysosomal storage diseases are inherited metabolic diseases characterized by lysosomal dysfunction and abnormal lipid storage. Niemann-Pick disease type C (NPC) is caused by mutations in cholesterol transporter genes (NPC1, NPC2) and is characterized by cholesterol accumulation in lysosomes. A biocompatible cholesterol solubilizer 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) was recently used in NPC patients for compassionate use and in clinical trials. HP-β-CD is an attractive drug candidate for NPC; however, its adverse effects, such as ototoxicity, should be solved. In this review, we discuss the current use of HP-β-CD in basic and clinical research and discuss alternative CD derivatives that may outperform HP-β-CD, which should be considered for clinical use. The potential of CD therapy for the treatment of other lysosomal storage diseases is also discussed.
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Affiliation(s)
- Yoichi Ishitsuka
- Department of Clinical Chemistry and Informatics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
| | - Tetsumi Irie
- Department of Clinical Chemistry and Informatics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Department of Pharmaceutical Packaging Technology, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Muneaki Matsuo
- Department of Pediatrics, Faculty of Medicine, Saga University, 5-1-1, Nabeshima, Saga 849-8501, Japan
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4
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Zhang J, Nie J, Sun H, Li J, Andersen JP, Shi Y. De novo labeling and trafficking of individual lipid species in live cells. Mol Metab 2022; 61:101511. [PMID: 35504533 PMCID: PMC9114690 DOI: 10.1016/j.molmet.2022.101511] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE Lipids exert dynamic biological functions which are determined both by their fatty acyl compositions and spatiotemporal distributions inside the cell. However, it remains a daunting task to investigate any of these features for each of the more than 1000 lipid species due to a lack of a universal labeling method for individual lipid moieties in live cells. Here we report a de novo lipid labeling method for individual lipid species with precise acyl compositions in live cells. The method is based on the principle of de novo lipid remodeling of exogenously added lysolipids with fluorescent acyl-CoA, leading to the re-synthesis of fluorescence-labeled lipids which can be imaged by confocal microscopy. METHODS The cells were incubated with lysolipids and a nitro-benzoxadiazolyl (NBD) labeled acyl-CoA. The newly remodeled NBD-labeled lipids and their subcellular localization were analyzed by confocal imaging in live cells. Thin layer chromatography was carried out to verify the synthesis of NBD-labeled lipids. The mitochondrial trafficking of NBD-labeled lipids was validated in live cells with targeted deletion of phospholipids transporters, including TRIAP1/PRELI protein complex and StarD7. RESULTS Incubation cells with lysolipids and NBD-acyl-CoA successfully labeled major lipid species with precise acyl compositions, including phospholipids, cholesterol esters, and neutral lipids, which can be analyzed by confocal imaging in live cells. In contrast to exogenously labeled lipids, the de novo labeled lipids retained full biological properties of their endogenous counterparts, including subcellular localization, trafficking, and recognition by lipid transporters. This method also uncovered some unexpected features of newly remodeled lipids and their transporters. CONCLUSIONS The de novo lipid labeling method not only provides a powerful tool for functional analysis of individual lipid species and lipid transporters, but also calls for re-evaluation of previously published results using exogenously labeled lipids.
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Affiliation(s)
- Jun Zhang
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX, 78229, USA,Perenna Pharmceuticals Inc., 14785 Omicron Drive, Ste 100, San Antonio, TX, 78245, USA
| | - Jia Nie
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX, 78229, USA
| | - Haoran Sun
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Jie Li
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
| | - John-Paul Andersen
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX, 78229, USA
| | - Yuguang Shi
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX, 78229, USA; Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China.
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5
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Dong W, Zhang X, Kong Y, Zhao Z, Mahmoud A, Wu L, Moussian B, Zhang J. CYP311A1 in the anterior midgut is involved in lipid distribution and microvillus integrity in Drosophila melanogaster. Cell Mol Life Sci 2022; 79:261. [PMID: 35478270 DOI: 10.1007/s00018-022-04283-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 04/01/2022] [Indexed: 11/03/2022]
Abstract
Lipids are either taken up from food sources or produced internally in specialized tissues such as the liver. Among others, both routes of lipid metabolism involve cytochrome P450 monooxygenases (CYPs). We sought to analyze the function of Cyp311a1 that has been shown to be expressed in the midgut of the fruit fly Drosophila melanogaster. Using a GFP-tagged version of CYP311A1 that is expressed under the control of its endogenous promoter, we show that Cyp311a1 localizes to the endoplasmic reticulum in epithelial cells of the anterior midgut. In larvae with reduced Cyp311a1 expression in the anterior midgut, compared to control larvae, the apical plasma membrane of the respective epithelial cells contains less and shorter microvilli. In addition, we observed reduction of neutral lipids in the fat body, the insect liver, and decreased phosphatidylethanolamine (PE) and triacylglycerols (TAG) amounts in the whole body of these larvae. Probably as a consequence, they cease to grow and eventually die. The microvillus defects in larvae with reduced Cyp311a1 expression are restored by supplying PE, a major phospholipid of plasma membranes, to the food. Moreover, the growth arrest phenotype of these larvae is partially rescued. Together, these results suggest that the anterior midgut is an import hub in lipid distribution and that the midgut-specific CYP311A1 contributes to this function by participating in shaping microvilli in a PE-dependent manner.
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Affiliation(s)
- Wei Dong
- Research Institute of Applied Biology, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Xubo Zhang
- Research Institute of Applied Biology, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Yue Kong
- Research Institute of Applied Biology, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Zhenwen Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, China
| | - Ali Mahmoud
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse-108, 01307, Dresden, Germany
| | - Lixian Wu
- Research Institute of Applied Biology, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Bernard Moussian
- Université Côte d'Azur, Parc Valrose, 06108, Nice Cedex 2, France.
| | - Jianzhen Zhang
- Research Institute of Applied Biology, Shanxi University, Taiyuan, 030006, Shanxi, China.
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6
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Betinova V, Toth Hervay N, Elias D, Horvathova A, Gbelska Y. The UPC2 gene in Kluyveromyces lactis stress adaptation. Folia Microbiol (Praha) 2022; 67:641-647. [PMID: 35352326 DOI: 10.1007/s12223-022-00968-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/10/2022] [Indexed: 11/25/2022]
Abstract
KlUpc2p, a transcription factor belonging to the fungal binuclear cluster family, is an important regulator of ergosterol biosynthesis and azole drug resistance in Kluyveromyces lactis. In this work, we show that the absence of KlUpc2p generates Rag- phenotype and modulates the K. lactis susceptibility to oxidants and calcofuor white. The KlUPC2 deletion leads to increased expression of KlMGA2 gene, encoding an important regulator of hypoxic and lipid biosynthetic genes in K. lactis and also KlHOG1 gene. The absence of KlUpc2p does not lead to statistically significant changes in glycerol, corroborating the expression of KlGPD1 gene, encoding NAD+-dependent glycerol-3-phosphate dehydrogenase, that is similar in both the deletion mutant and the parental wild-type strain. Increased sensitivity of Klupc2 mutant cells to brefeldin A accompanied with significant increase in KlARF2 gene expression point to the involvement of KlUpc2p in intracellular signaling. Our observations highlight the connections between ergosterol and fatty acid metabolism to modulate membrane properties and point to the possible involvement of KlUpc2p in K. lactis oxidative stress response.
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Affiliation(s)
- Veronika Betinova
- Faculty of Natural Sciences, Department of Microbiology and Virology, Comenius University in Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovak Republic
| | - Nora Toth Hervay
- Faculty of Natural Sciences, Department of Microbiology and Virology, Comenius University in Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovak Republic
| | - Daniel Elias
- Faculty of Natural Sciences, Department of Microbiology and Virology, Comenius University in Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovak Republic
| | - Agnes Horvathova
- Centre for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
| | - Yvetta Gbelska
- Faculty of Natural Sciences, Department of Microbiology and Virology, Comenius University in Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovak Republic.
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7
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Lin HY, Pang MY, Feng MG, Ying SH. A peroxisomal sterol carrier protein 2 (Scp2) contributes to lipid trafficking in differentiation and virulence of the insect pathogenic fungus Beauveria bassiana. Fungal Genet Biol 2021; 158:103651. [PMID: 34906632 DOI: 10.1016/j.fgb.2021.103651] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/30/2021] [Accepted: 12/06/2021] [Indexed: 01/04/2023]
Abstract
Sterol carrier protein 2 (SCP2) represents a family of proteins binding a variety of lipids and plays essential roles in cellular physiology. However, its physiological roles are largely unknown in filamentous fungi. In this study, we functionally characterized an orthologous Scp2 gene in the filamentous insect pathogenic fungus Beauveria bassiana (BbScp2). BbScp2 was verified to be a peroxisomal protein and displayed different affinities to various lipids, with strong affinity to palmitic acid (PA) and ergosterol (ES). No significant binding activity was detected between protein and oleic acid (OA) or linoleic acid (LA). Ablation of BbScp2 did not cause significant effects on fungal growth on various carbon sources, but resulted in a modest reduction in conidial (49%) and blastospore yield (45%). In addition, exogenous lipids could recover the defectives in conidiation of ΔBbScp2 mutant strain. BbScp2 was required for the cytomembrane functionality in germlings, and its loss resulted in a more significant decrease in virulence indicated by cuticle infection assay than intrahemocoel injection assay. Our findings indicate that Scp2 links the lipid trafficking to the asexual differentiation and virulence of B. bassiana.
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Affiliation(s)
- Hai-Yan Lin
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Meei-Yuan Pang
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ming-Guang Feng
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Sheng-Hua Ying
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
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8
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Tei R, Baskin JM. Induced proximity tools for precise manipulation of lipid signaling. Curr Opin Chem Biol 2021; 65:93-100. [PMID: 34304140 DOI: 10.1016/j.cbpa.2021.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/03/2021] [Accepted: 06/18/2021] [Indexed: 01/07/2023]
Abstract
Lipids are highly dynamic molecules that, due to their hydrophobicity, are spatially confined to membrane environments. From these locations, certain privileged lipids serve as signaling molecules. For understanding the biological functions of subcellular pools of signaling lipids, induced proximity tools have been invaluable. These methods involve controlled heterodimerization, by either small-molecule or light triggers, of functional proteins. In the arena of lipid signaling, induced proximity tools can recruit lipid-metabolizing enzymes to manipulate lipid signaling and create artificial tethers between organelle membranes to control lipid trafficking pathways at membrane contact sites. Here, we review recent advances in methodology development and biological application of chemical-induced and light-induced proximity tools for manipulating lipid metabolism, trafficking, and signaling.
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Affiliation(s)
- Reika Tei
- Department of Chemistry and Chemical Biology and Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York, 14853, USA
| | - Jeremy M Baskin
- Department of Chemistry and Chemical Biology and Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York, 14853, USA.
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9
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Abstract
The Steroidogenic Acute Regulatory Protein-related Lipid Transfer (START) domain is a ~210 amino acid sequence that folds into an α/β helix-grip structure forming a hydrophobic pocket for lipid binding. The helix-grip fold structure defines a large superfamily of proteins, and this review focuses on the mammalian START domain family members that include single START domain proteins with identified ligands, and larger multi-domain proteins that may have novel roles in metabolism. Much of our understanding of the mammalian START domain proteins in lipid transport and changes in metabolism has advanced through studies using knockout mouse models, although for some of these proteins the identity and/or physiological role of ligand binding remains unknown. The findings that helped define START domain lipid-binding specificity, lipid transport, and changes in metabolism are presented to highlight that fundamental questions remain regarding the biological function(s) for START domain-containing proteins.
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Affiliation(s)
- Barbara J Clark
- Department of Biochemistry & Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, 40292, USA.
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10
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Abstract
Plastids are organelles delineated by two envelopes that play important roles in different cellular processes such as energy production or lipid biosynthesis. To regulate their biogenesis and their function, plastids have to communicate with other cellular compartments. This communication can be mediated by signaling molecules and by the establishment of direct contacts between the plastid envelope and other organelles such as the endoplasmic reticulum, the mitochondria, the plasma membrane, the peroxisomes and the nucleus. These interactions are highly dynamic and respond to different biotic and abiotic stresses. However, the mechanisms involved in the formation of plastid-organelle contact sites and their functions are still enigmatic. In this chapter, we summarize our current knowledge about plastid contact sites and their role in the regulation of plastid biogenesis and function.
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Affiliation(s)
| | - Morgane Michaud
- Laboratory of Cell and Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, USA. .,Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Commissariat à l'Energie Atomique et aux Energies Alternatives, CEA Grenoble, UMR5168, Université Grenoble Alpes, Grenoble, France.
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11
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Morel E, Ghezzal S, Lucchi G, Truntzer C, Pais de Barros JP, Simon-Plas F, Demignot S, Mineo C, Shaul PW, Leturque A, Rousset M, Carrière V. Cholesterol trafficking and raft-like membrane domain composition mediate scavenger receptor class B type 1-dependent lipid sensing in intestinal epithelial cells. Biochim Biophys Acta Mol Cell Biol Lipids 2017; 1863:199-211. [PMID: 29196159 DOI: 10.1016/j.bbalip.2017.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 11/13/2017] [Accepted: 11/27/2017] [Indexed: 02/02/2023]
Abstract
Scavenger receptor Class B type 1 (SR-B1) is a lipid transporter and sensor. In intestinal epithelial cells, SR-B1-dependent lipid sensing is associated with SR-B1 recruitment in raft-like/ detergent-resistant membrane domains and interaction of its C-terminal transmembrane domain with plasma membrane cholesterol. To clarify the initiating events occurring during lipid sensing by SR-B1, we analyzed cholesterol trafficking and raft-like domain composition in intestinal epithelial cells expressing wild-type SR-B1 or the mutated form SR-B1-Q445A, defective in membrane cholesterol binding and signal initiation. These features of SR-B1 were found to influence both apical cholesterol efflux and intracellular cholesterol trafficking from plasma membrane to lipid droplets, and the lipid composition of raft-like domains. Lipidomic analysis revealed likely participation of d18:0/16:0 sphingomyelin and 16:0/0:0 lysophosphatidylethanolamine in lipid sensing by SR-B1. Proteomic analysis identified proteins, whose abundance changed in raft-like domains during lipid sensing, and these included molecules linked to lipid raft dynamics and signal transduction. These findings provide new insights into the role of SR-B1 in cellular cholesterol homeostasis and suggest molecular links between SR-B1-dependent lipid sensing and cell cholesterol and lipid droplet dynamics.
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Affiliation(s)
- Etienne Morel
- Centre de Recherche des Cordeliers, INSERM, UMPC Université Paris 6, Université Paris Descartes Paris 5, CNRS, F-75006 Paris, France
| | - Sara Ghezzal
- Centre de Recherche des Cordeliers, INSERM, UMPC Université Paris 6, Université Paris Descartes Paris 5, CNRS, F-75006 Paris, France
| | - Géraldine Lucchi
- Clinical Innovation Proteomic Platform CLIPP, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Caroline Truntzer
- Clinical Innovation Proteomic Platform CLIPP, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Jean-Paul Pais de Barros
- Plateforme de Lipidomique, INSERM UMR1231, Université de Bourgogne Franche Comté, F-21000 Dijon, France
| | - Françoise Simon-Plas
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Sylvie Demignot
- Centre de Recherche des Cordeliers, INSERM, UMPC Université Paris 6, Université Paris Descartes Paris 5, CNRS, F-75006 Paris, France; EPHE, PSL Research University, F-75006 Paris, France
| | - Chieko Mineo
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas, Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Philip W Shaul
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas, Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Armelle Leturque
- Centre de Recherche des Cordeliers, INSERM, UMPC Université Paris 6, Université Paris Descartes Paris 5, CNRS, F-75006 Paris, France
| | - Monique Rousset
- Centre de Recherche des Cordeliers, INSERM, UMPC Université Paris 6, Université Paris Descartes Paris 5, CNRS, F-75006 Paris, France
| | - Véronique Carrière
- Centre de Recherche des Cordeliers, INSERM, UMPC Université Paris 6, Université Paris Descartes Paris 5, CNRS, F-75006 Paris, France.
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12
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Nguyen PJ, Rippa S, Rossez Y, Perrin Y. Acylcarnitines participate in developmental processes associated to lipid metabolism in plants. Planta 2016; 243:1011-22. [PMID: 26748916 DOI: 10.1007/s00425-016-2465-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/29/2015] [Indexed: 05/20/2023]
Abstract
Plant acylcarnitines are present during anabolic processes of lipid metabolism. Their low contents relatively to the corresponding acyl-CoAs suggest that they are associated to specific pools of activated fatty acids. The non-proteinaceous amino acid carnitine exists in plants either as a free form or esterified to fatty acids. To clarify the biological significance of acylcarnitines in plant lipid metabolism, we have analyzed their content in plant extracts using an optimized tandem mass spectrometry coupled to liquid chromatography method. We have studied different developmental processes (post-germination, organogenesis, embryogenesis) targeted for their high requirement for lipid metabolism. The modulation of the acylcarnitine content was compared to that of the lipid composition and lipid biosynthetic gene expression level in the analyzed materials. Arabidopsis mutants were also studied based on their alteration in de novo fatty acid partitioning between the prokaryotic and eukaryotic pathways of lipid biosynthesis. We show that acylcarnitines cannot specifically be associated to triacylglycerol catabolism but that they are also associated to anabolic pathways of lipid metabolism. They are present during membrane and storage lipid biosynthesis processes. A great divergence in the relative contents of acylcarnitines as compared to the corresponding acyl-CoAs suggests that acylcarnitines are associated to very specific process(es) of lipid metabolism. The nature of their involvement as the transport form of activated fatty acids or in connection with the management of acyl-CoA pools is discussed. Also, the occurrence of medium-chain entities suggests that acylcarnitines are associated with additional lipid processes such as protein acylation for instance. This work strengthens the understanding of the role of acylcarnitines in plant lipid metabolism, probably in the management of specific acyl-CoA pools.
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Affiliation(s)
- Phuong-Jean Nguyen
- Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherche Royallieu, Sorbonne Universités, Université de Technologie de Compiègne, CS 60319, 60203, Compiègne Cedex, France
| | - Sonia Rippa
- Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherche Royallieu, Sorbonne Universités, Université de Technologie de Compiègne, CS 60319, 60203, Compiègne Cedex, France
| | - Yannick Rossez
- Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherche Royallieu, Sorbonne Universités, Université de Technologie de Compiègne, CS 60319, 60203, Compiègne Cedex, France
| | - Yolande Perrin
- Génie Enzymatique et Cellulaire, FRE 3580 CNRS, Centre de recherche Royallieu, Sorbonne Universités, Université de Technologie de Compiègne, CS 60319, 60203, Compiègne Cedex, France.
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13
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Abstract
Acyl-CoA-binding proteins (ACBPs) play a pivotal role in fatty acid metabolism because they can transport medium- and long-chain acyl-CoA esters. In eukaryotic cells, ACBPs are involved in intracellular trafficking of acyl-CoA esters and formation of a cytosolic acyl-CoA pool. In addition to these ubiquitous functions, more specific non-redundant roles of plant ACBP subclasses are implicated by the existence of multigene families with variable molecular masses, ligand specificities, functional domains (e.g. protein-protein interaction domains), subcellular locations and gene expression patterns. In this chapter, recent progress in the characterization of ACBPs from the model dicot plant, Arabidopsis thaliana, and the model monocot, Oryza sativa, and their emerging roles in plant growth and development are discussed. The functional significance of respective members of the plant ACBP families in various developmental and physiological processes such as seed development and germination, stem cuticle formation, pollen development, leaf senescence, peroxisomal fatty acid β-oxidation and phloem-mediated lipid transport is highlighted.
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Affiliation(s)
- Shiu-Cheung Lung
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China.
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Abstract
A gene family encoding six members of acyl-CoA-binding proteins (ACBP) exists in Arabidopsis and they are designated as AtACBP1-AtACBP6. They have been observed to play pivotal roles in plant lipid metabolism, consistent to the abilities of recombinant AtACBP in binding different medium- and long-chain acyl-CoA esters in vitro. While AtACBP1 and AtACBP2 are membrane-associated proteins with ankyrin repeats and AtACBP3 contains a signaling peptide for targeting to the apoplast, AtACBP4, AtACBP5 and AtACBP6 represent the cytosolic forms in the AtACBP family. They were verified to be subcellularly localized in the cytosol using diverse experimental methods, including cell fractionation followed by western blot analysis, immunoelectron microscopy and confocal laser-scanning microscopy using autofluorescence-tagged fusions. AtACBP4 (73.2 kDa) and AtACBP5 (70.1 kDa) are the largest, while AtACBP6 (10.4 kDa) is the smallest. Their binding affinities to oleoyl-CoA esters suggested that they can potentially transfer oleoyl-CoA esters from the plastids to the endoplasmic reticulum, facilitating the subsequent biosynthesis of non-plastidial membrane lipids in Arabidopsis. Recent studies on ACBP, extended from a dicot (Arabidopsis) to a monocot, revealed that six ACBP are also encoded in rice (Oryza sativa). Interestingly, three small rice ACBP (OsACBP1, OsACBP2 and OsACBP3) are present in the cytosol in comparison to one (AtACBP6) in Arabidopsis. In this review, the combinatory and distinct roles of the cytosolic AtACBP are discussed, including their functions in pollen and seed development, light-dependent regulation and substrate affinities to acyl-CoA esters.
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Bonacic K, Estévez A, Bellot O, Conde-Sieira M, Gisbert E, Morais S. Dietary Fatty Acid Metabolism is Affected More by Lipid Level than Source in Senegalese Sole Juveniles: Interactions for Optimal Dietary Formulation. Lipids 2015; 51:105-22. [PMID: 26563870 DOI: 10.1007/s11745-015-4089-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 10/19/2015] [Indexed: 01/17/2023]
Abstract
This study analyses the effects of dietary lipid level and source on lipid absorption and metabolism in Senegalese sole (Solea senegalensis). Juvenile fish were fed 4 experimental diets containing either 100 % fish oil (FO) or 25 % FO and 75 % vegetable oil (VO; rapeseed, linseed and soybean oils) at two lipid levels (~8 or ~18 %). Effects were assessed on fish performance, body proximate composition and lipid accumulation, activity of hepatic lipogenic and fatty acid oxidative enzymes and, finally, on the expression of genes related to lipid metabolism in liver and intestine, and to intestinal absorption, both pre- and postprandially. Increased dietary lipid level had no major effects on growth and feeding performance (FCR), although fish fed FO had marginally better growth. Nevertheless, diets induced significant changes in lipid accumulation and metabolism. Hepatic lipid deposits were higher in fish fed VO, associated to increased hepatic ATP citrate lyase activity and up-regulated carnitine palmitoyltransferase 1 (cpt1) mRNA levels post-prandially. However, lipid level had a larger effect on gene expression of metabolic (lipogenesis and β-oxidation) genes than lipid source, mostly at fasting. High dietary lipid level down-regulated fatty acid synthase expression in liver and intestine, and increased cpt1 mRNA in liver. Large lipid accumulations were observed in the enterocytes of fish fed high lipid diets. This was possibly a result of a poor capacity to adapt to high dietary lipid level, as most genes involved in intestinal absorption were not regulated in response to the diet.
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Affiliation(s)
- Kruno Bonacic
- IRTA, Centre de Sant Carles de la Ràpita (SCR), Ctra. Poble Nou km 5.5, 43540, Tarragona, Spain.
| | - Alicia Estévez
- IRTA, Centre de Sant Carles de la Ràpita (SCR), Ctra. Poble Nou km 5.5, 43540, Tarragona, Spain.
| | - Olga Bellot
- IRTA, Centre de Sant Carles de la Ràpita (SCR), Ctra. Poble Nou km 5.5, 43540, Tarragona, Spain.
| | - Marta Conde-Sieira
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123, Porto, Portugal.
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo, 36310, Vigo, Spain.
| | - Enric Gisbert
- IRTA, Centre de Sant Carles de la Ràpita (SCR), Ctra. Poble Nou km 5.5, 43540, Tarragona, Spain.
| | - Sofia Morais
- IRTA, Centre de Sant Carles de la Ràpita (SCR), Ctra. Poble Nou km 5.5, 43540, Tarragona, Spain.
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Schlattner U, Tokarska-Schlattner M, Rousseau D, Boissan M, Mannella C, Epand R, Lacombe ML. Mitochondrial cardiolipin/phospho lipid trafficking: the role of membrane contact site complexes and lipid transfer proteins. Chem Phys Lipids 2013; 179:32-41. [PMID: 24373850 DOI: 10.1016/j.chemphyslip.2013.12.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 12/17/2013] [Accepted: 12/19/2013] [Indexed: 11/18/2022]
Abstract
Historically, cellular trafficking of lipids has received much less attention than protein trafficking, mostly because its biological importance was underestimated, involved sorting and translocation mechanisms were not known, and analytical tools were limiting. This has changed during the last decade, and we discuss here some progress made in respect to mitochondria and the trafficking of phospholipids, in particular cardiolipin. Different membrane contact site or junction complexes and putative lipid transfer proteins for intra- and intermembrane lipid translocation have been described, involving mitochondrial inner and outer membrane, and the adjacent membranes of the endoplasmic reticulum. An image emerges how cardiolipin precursors, remodeling intermediates, mature cardiolipin and its oxidation products could migrate between membranes, and how this trafficking is involved in cardiolipin biosynthesis and cell signaling events. Particular emphasis in this review is given to mitochondrial nucleoside diphosphate kinase D and mitochondrial creatine kinases, which emerge to have roles in both, membrane junction formation and lipid transfer.
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Affiliation(s)
- Uwe Schlattner
- Univ. Grenoble-Alpes, Laboratory of Fundamental and Applied Bioenergetics (LBFA) and SFR Environmental and Systems Biology (BEeSy), Grenoble, France; Inserm, U1055, Grenoble, France.
| | - Malgorzata Tokarska-Schlattner
- Univ. Grenoble-Alpes, Laboratory of Fundamental and Applied Bioenergetics (LBFA) and SFR Environmental and Systems Biology (BEeSy), Grenoble, France; Inserm, U1055, Grenoble, France
| | - Denis Rousseau
- Univ. Grenoble-Alpes, Laboratory of Fundamental and Applied Bioenergetics (LBFA) and SFR Environmental and Systems Biology (BEeSy), Grenoble, France; Inserm, U1055, Grenoble, France
| | - Mathieu Boissan
- UPMC Université Paris 06, Paris, France; Inserm, UMRS938, Paris, France; Hôpital Tenon, AP-HP, Service de Biochimie et Hormonologie, Paris, France
| | - Carmen Mannella
- Wadsworth Center, New York State Department of Health, Albany, NY, USA
| | - Richard Epand
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
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Baile MG, Lu YW, Claypool SM. The topology and regulation of cardiolipin biosynthesis and remodeling in yeast. Chem Phys Lipids 2013; 179:25-31. [PMID: 24184646 DOI: 10.1016/j.chemphyslip.2013.10.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/16/2013] [Accepted: 10/19/2013] [Indexed: 01/06/2023]
Abstract
The signature mitochondrial phospholipid cardiolipin plays an important role in mitochondrial function, and alterations in cardiolipin metabolism are associated with human disease. Topologically, cardiolipin biosynthesis and remodeling are complex. Precursor phospholipids must be transported from the ER, across the mitochondrial outer membrane to the matrix-facing leaflet of the inner membrane, where cardiolipin biosynthesis commences. Post-synthesis, cardiolipin undergoes acyl chain remodeling, requiring additional trafficking steps, before it achieves its final distribution within both mitochondrial membranes. This process is regulated at several points via multiple independent mechanisms. Here, we review the regulation and topology of cardiolipin biosynthesis and remodeling in the yeast Saccharomyces cerevisiae. Although cardiolipin metabolism is more complicated in mammals, yeast have been an invaluable model for dissecting the steps required for this process.
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Affiliation(s)
- Matthew G Baile
- Department of Physiology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Ya-Wen Lu
- Department of Physiology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Steven M Claypool
- Department of Physiology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.
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