Phospholipase D2 is involved in the formation of Golgi tubules and ArfGAP1 recruitment

Lipids and lipid-modifying enzymes play a key role in the biogenesis, maintenance and fission of transport carriers in the secretory and endocytic pathways. In the present study we demonstrate that phosphatidic acid generated by phospholipase D2 (PLD2) is involved in the formation of Golgi tubules....

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Published inPloS one Vol. 9; no. 10; p. e111685
Main Authors Martínez-Martínez, Narcisa, Martínez-Alonso, Emma, Ballesta, José, Martínez-Menárguez, José A
Format Journal Article
LanguageEnglish
Published United States Public Library of Science 29.10.2014
Public Library of Science (PLoS)
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Summary:Lipids and lipid-modifying enzymes play a key role in the biogenesis, maintenance and fission of transport carriers in the secretory and endocytic pathways. In the present study we demonstrate that phosphatidic acid generated by phospholipase D2 (PLD2) is involved in the formation of Golgi tubules. The main evidence to support this is: 1) inhibitors of phosphatidic acid formation and PLD2 depletion inhibit the formation of tubules containing resident enzymes and regulators of intra-Golgi transport in a low temperature (15°C) model of Golgi tubulation but do not affect brefeldin A-induced tubules, 2) inhibition of PLD2 enzymatic activity and PLD2 depletion in cells cultured under physiological conditions (37°C) induce the formation of tubules specifically containing Golgi matrix proteins, and, 3) over-expression of PLD2 induces the formation of a tubular network. In addition, it was found that the generation of this lipid by the isoenzyme is necessary for ArfGAP1 recruitment to Golgi membranes. These results suggest that both proteins are involved in the molecular mechanisms which drive the formation of different types of Golgi tubules.
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Competing Interests: The authors have declared that no competing interests exist.
Conceived and designed the experiments: NM-M EM-A JB JAM-M. Performed the experiments: NM-M EM-A. Analyzed the data: NM-M EM-A JB JAM-M. Contributed to the writing of the manuscript: NM-M EM-A JB JAM-M.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0111685