Article (Scientific journals)
Investigation of the interaction between a β-cyclodextrin and DMPC liposomes: a small angle neutron scattering study
Joset, Arnaud; Grammenos, Angeliki; Hoebeke, Maryse et al.
2015In Journal of Inclusion Phenomena and Macrocyclic Chemistry, 83 (3), p. 227-238
Peer reviewed
 

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Keywords :
small angle neutron scattering (SANS); membrane; cyclodextrin
Abstract :
[en] The Small Angle Neutron Scattering technique (SANS) has been applied to investigate the interaction between a cyclodextrin (CD) and liposomes. From the modelling of the experimental neutron scattering cross sections, the detailed structure of dimyristoylphosphatidylcholine (DMPC) liposomes is assessed upon addition of increasing amounts of randomly methylated β-CD (RAMEB). This study has been performed at two temperatures bracketing the phase transition of the DMPC bilayers. The fraction of DMPC molecules incorporated into the vesicles is inferred. The dose-dependent phospholipidic extraction by RAMEB is quantified as well as the concomitant evolution of the liposome radius and of the thickness of the hydrophobic and hydrophilic parts of the membrane. The possible formation of CD-DMPC inclusion complexes is also assessed. The data suggest the dose-dependent coverage by RAMEB of the outer liposome interface. Our analysis highlights the important role of temperature on the mechanism of action of RAMEB. These results are discussed in the framework of the Area-Difference-Elasticity model.
Research center :
Molecular Dynamics Laboratory
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Joset, Arnaud ;  University of Liège (ULg), Department of Chemistry, Molecular Dynamics Laboratory
Grammenos, Angeliki;  University of Liège (ULg), Department of Physics, Laboratory of Biomedical Spectroscopy
Hoebeke, Maryse  ;  University of Liège (ULg), Department of Physics, Laboratory of Biomedical Spectroscopy
Leyh, Bernard  ;  University of Liège (ULg), Department of Chemistry, Molecular Dynamics Laboratory
Language :
English
Title :
Investigation of the interaction between a β-cyclodextrin and DMPC liposomes: a small angle neutron scattering study
Publication date :
2015
Journal title :
Journal of Inclusion Phenomena and Macrocyclic Chemistry
ISSN :
1388-3127
eISSN :
1573-1111
Publisher :
Springer
Volume :
83
Issue :
3
Pages :
227-238
Peer reviewed :
Peer reviewed
Funders :
the NMI3 network funded by the European Commission
Available on ORBi :
since 10 September 2015

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