Following the Growth and Division of Lipid Boundaries by Using Glass Microsphere-Supported Protocells
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Protocells are compartmented molecular networks which can be designed to study the origins of life. Glass microsphere-supported giant vesicles (MSGVs) are model protocells for which monodispersed glass beads are coated with a lipid bilayer thanks to avidin and biotinylated phospholipids. These supramolecular assemblies have proved to be extremely effective to understand certain phenomena related to the self-reproduction of protocells thanks to a series of intriguing experiments. First, the growth and division (G&D) of these giant vesicles was observed by epifluorescence and confocal microscopy when they were fed with fatty acids solutions at different feeding rates. Second, chemical analyses performed by a combination of GC-MS, UPLC-HRMS and phospholipid-specific assay, allowed to independently study the composition of the vesicles obtained after G&D.
KeywordsPhospholipids Fatty acids Membranes Vesicles Protocells Self-reproduction Autopoietic systems
MF thanks Prof. Stefano Piotto and Prof. Federico Rossi that gave him the opportunity to present preliminary results on this topic at the 3rd International Conference on Bio and Nanomaterials (BIONAM) – September 29–October 3, 2019.
Conflict of Interest
The authors declare no conflict of interest.
- Fayolle, D., Altamura, E., D’Onofrio, A., Madanamothoo, W., Fenet, B., Mavelli, F., Buchet, R., Stano, P., Fiore, M., Strazewski, P.: Crude phosphorylation mixtures containing racemic lipid amphiphiles self-assemble to give stable primitive compartments. Sci. Rep. 7, 18106–18114 (2017). https://doi.org/10.1038/s41598-017-18053-yCrossRefGoogle Scholar
- Fiore, M., Madanamoothoo, W., Berlioz-Barbier, A., Maniti, O., Girard-Egrot, A., Buchet, R., Strazewski, P.: Giant vesicles from rehydrated crude mixtures containing unexpected mixtures of amphiphiles formed under plausibly prebiotic conditions. Org. Biomol. Chem. 15, 4231–4240 (2017). https://doi.org/10.1039/C7OB00708FCrossRefGoogle Scholar
- Pereira de Souza, T., Holzer, M., Stano, P., Steiniger, F., May, S., Schubert, R., Fahr, A., Luisi, P.L.: New insights into the growth and transformation of vesicles: a free-flow electrophoresis study. J. Phys. Chem. B 119, 12212–12223 (2015). https://doi.org/10.1021/acs.jpcb.5b05057CrossRefGoogle Scholar