Publication Date:
2014-08-12
Description:
Phospholipids (PLs) with polyunsaturated acyl chains are extremely abundant in a few specialized cellular organelles such as synaptic vesicles and photoreceptor discs, but their effect on membrane properties is poorly understood. Here, we found that polyunsaturated PLs increased the ability of dynamin and endophilin to deform and vesiculate synthetic membranes. When cells incorporated polyunsaturated fatty acids into PLs, the plasma membrane became more amenable to deformation by a pulling force and the rate of endocytosis was accelerated, in particular, under conditions in which cholesterol was limiting. Molecular dynamics simulations and biochemical measurements indicated that polyunsaturated PLs adapted their conformation to membrane curvature. Thus, by reducing the energetic cost of membrane bending and fission, polyunsaturated PLs may help to support rapid endocytosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pinot, Mathieu -- Vanni, Stefano -- Pagnotta, Sophie -- Lacas-Gervais, Sandra -- Payet, Laurie-Anne -- Ferreira, Thierry -- Gautier, Romain -- Goud, Bruno -- Antonny, Bruno -- Barelli, Helene -- New York, N.Y. -- Science. 2014 Aug 8;345(6197):693-7. doi: 10.1126/science.1255288.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Pharmacologie Moleculaire et Cellulaire, Universite Nice Sophia Antipolis and CNRS, 06560 Valbonne, France. Unite Mixte de Recherche 144, Institut Curie and CNRS, F-75248 Paris, France. ; Institut de Pharmacologie Moleculaire et Cellulaire, Universite Nice Sophia Antipolis and CNRS, 06560 Valbonne, France. ; Centre Commun de Microscopie Appliquee, Universite Nice Sophia Antipolis, Parc Valrose, 06000 Nice, France. ; Signalisation et Transports Ioniques Membranaires, Universite de Poitiers and CNRS, Poitiers, France. ; Unite Mixte de Recherche 144, Institut Curie and CNRS, F-75248 Paris, France. ; Institut de Pharmacologie Moleculaire et Cellulaire, Universite Nice Sophia Antipolis and CNRS, 06560 Valbonne, France. antonny@ipmc.cnrs.fr.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25104391" target="_blank"〉PubMed〈/a〉
Keywords:
Adaptor Proteins, Signal Transducing/chemistry/metabolism
;
Animals
;
Cell Line, Tumor
;
Cell Membrane/chemistry/*physiology
;
Dynamins/chemistry/metabolism
;
*Endocytosis
;
Fatty Acids, Unsaturated/chemistry/*physiology
;
Humans
;
Membranes, Artificial
;
Mice
;
Molecular Dynamics Simulation
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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