Sphingosine-1-phosphate lyase deficient cells as a tool to study protein lipid interactions
Cell membranes contain hundreds to thousands of individual lipid species that are of structural importance but also specifically interact with proteins. Due to their highly controlled synthesis and role in signaling events sphingolipids are an intensely studied class of lipids. In order to investiga...
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
April 21, 2016
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| In: |
PLOS ONE
Year: 2016, Volume: 11, Issue: 4, Pages: e0153009 |
| ISSN: | 1932-6203 |
| Online Access: |
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| Author Notes: | Mathias J. Gerl, Verena Bittl, Susanne Kirchner, Timo Sachsenheimer, Hanna L. Brunner, Christian Lüchtenborg, Cagakan Özbalci, Hannah Wiedemann, Sabine Wegehingel, Walter Nickel, Per Haberkant, Carsten Schultz, Marcus Krüger, Britta Brügger |
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| 245 | 1 | 0 | |a Sphingosine-1-phosphate lyase deficient cells as a tool to study protein lipid interactions |c Mathias J. Gerl, Verena Bittl, Susanne Kirchner, Timo Sachsenheimer, Hanna L. Brunner, Christian Lüchtenborg, Cagakan Özbalci, Hannah Wiedemann, Sabine Wegehingel, Walter Nickel, Per Haberkant, Carsten Schultz, Marcus Krüger, Britta Brügger |
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| 520 | |a Cell membranes contain hundreds to thousands of individual lipid species that are of structural importance but also specifically interact with proteins. Due to their highly controlled synthesis and role in signaling events sphingolipids are an intensely studied class of lipids. In order to investigate their metabolism and to study proteins interacting with sphingolipids, metabolic labeling based on photoactivatable sphingoid bases is the most straightforward approach. In order to monitor protein-lipid-crosslink products, sphingosine derivatives containing a reporter moiety, such as a radiolabel or a clickable group, are used. In normal cells, degradation of sphingoid bases via action of the checkpoint enzyme sphingosine-1-phosphate lyase occurs at position C2-C3 of the sphingoid base and channels the resulting hexadecenal into the glycerolipid biosynthesis pathway. In case the functionalized sphingosine looses the reporter moiety during its degradation, specificity towards sphingolipid labeling is maintained. In case degradation of a sphingosine derivative does not remove either the photoactivatable or reporter group from the resulting hexadecenal, specificity towards sphingolipid labeling can be achieved by blocking sphingosine-1-phosphate lyase activity and thus preventing sphingosine derivatives to be channeled into the sphingolipid-to-glycerolipid metabolic pathway. Here we report an approach using clustered, regularly interspaced, short palindromic repeats (CRISPR)-associated nuclease Cas9 to create a sphingosine-1-phosphate lyase (SGPL1) HeLa knockout cell line to disrupt the sphingolipid-to-glycerolipid metabolic pathway. We found that the lipid and protein compositions as well as sphingolipid metabolism of SGPL1 knock-out HeLa cells only show little adaptations, which validates these cells as model systems to study transient protein-sphingolipid interactions. | ||
| 650 | 4 | |a Aldehyde-Lyases | |
| 650 | 4 | |a Animals | |
| 650 | 4 | |a Cells, Cultured | |
| 650 | 4 | |a Chromatography, Thin Layer | |
| 650 | 4 | |a Clustered Regularly Interspaced Short Palindromic Repeats | |
| 650 | 4 | |a Gene Knockdown Techniques | |
| 650 | 4 | |a HeLa Cells | |
| 650 | 4 | |a Humans | |
| 650 | 4 | |a Lipid Metabolism | |
| 650 | 4 | |a Mice | |
| 650 | 4 | |a Protein Binding | |
| 650 | 4 | |a Proteins | |
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