Article (Scientific journals)
Changes in biophysical membrane properties induced by the Budesonide/ Hydroxy-β-cyclodextrin complex
dos Santos, Andreia; Bayiha, Jules; Dufour, Gilles et al.
2017In Biochimica et Biophysica Acta. Biomembranes
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Keywords :
Drug-membrane interaction; Fluidity; Permeability; Langmuir; Cholesterol; Liposomes
Abstract :
[en] Budesonide (BUD), a poorly soluble anti-inflammatory drug, is used to treat patients suffering from asthma and COPD (Chronic Obstructive Pulmonary Disease). Hydroxypropyl-β-cyclodextrin (HPβCD), a biocompatible cyclodextrin known to interact with cholesterol, is used as a drug-solubilizing agent in pharmaceutical formulations. Budesonide administered as an inclusion complex within HPβCD (BUD:HPβCD) required a quarter of the nominal dose of the suspension formulation and significantly reduced neutrophil induced inflammation in a COPD mouse model exceeding the effect of each molecule administered individually. This suggests the role of lipid domains enriched in cholesterol for inflammatory signaling activation. In this context, we investigated the effect of BUD:HPβCD on the biophysical properties of membrane lipids. On cellular models (A549, lung epithelial cells), BUD:HPβCD extracted cholesterol similarly to HPβCD. On large unilamellar vesicles (LUVs), by using the fluorescent probes diphenylhexatriene (DPH) and calcein, we demonstrated an increase in membrane fluidity and permeability induced by BUD:HPβCD in vesicles containing cholesterol. On giant unilamellar vesicles (GUVs) and lipid monolayers, BUD:HPβCD induced the disruption of cholesterol-enriched raft-like liquid ordered domains as well as changes in lipid packing and lipid desorption from the cholesterol monolayers, respectively. Except for membrane fluidity, all these effects were enhanced when HPβCD was complexed with budesonide as compared with HPβCD. Since cholesterol-enriched domains have been linked to membrane signaling including pathways involved in inflammation processes, we hypothesized the effects of BUD:HPβCD could be partly mediated by changes in the biophysical properties of cholesterol-enriched domains.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
dos Santos, Andreia
Bayiha, Jules
Dufour, Gilles
Cataldo, Didier  ;  Université de Liège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Evrard, Brigitte  ;  Université de Liège > Département de pharmacie > Pharmacie galénique
Silva, Liana C
Deleu, Magali  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Mingeot-Leclercq, Marie-Paule
Language :
English
Title :
Changes in biophysical membrane properties induced by the Budesonide/ Hydroxy-β-cyclodextrin complex
Publication date :
2017
Journal title :
Biochimica et Biophysica Acta. Biomembranes
ISSN :
0005-2736
Publisher :
Elsevier Science
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 June 2017

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