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Liposomes entrapping β-cyclodextrin/ibuprofen inclusion complex: Role of the host and the guest on the bilayer integrity and microviscosity. Chem Phys Lipids 2017; 209:61-65. [DOI: 10.1016/j.chemphyslip.2017.09.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/14/2017] [Accepted: 09/29/2017] [Indexed: 11/22/2022]
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Takechi-Haraya Y, Tanaka K, Tsuji K, Asami Y, Izawa H, Shigenaga A, Otaka A, Saito H, Kawakami K. Molecular Complex Composed of β-Cyclodextrin-Grafted Chitosan and pH-Sensitive Amphipathic Peptide for Enhancing Cellular Cholesterol Efflux under Acidic pH. Bioconjug Chem 2015; 26:572-81. [DOI: 10.1021/acs.bioconjchem.5b00037] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yuki Takechi-Haraya
- Institute
of Health Biosciences, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shoumachi, Tokushima 770-8505, Japan
- International
Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Kento Tanaka
- Institute
of Health Biosciences, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shoumachi, Tokushima 770-8505, Japan
| | - Kohei Tsuji
- Institute
of Health Biosciences, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shoumachi, Tokushima 770-8505, Japan
| | - Yasuo Asami
- TA Instruments Japan, Inc., 5-2-4 Nishi-Gotanda, Shinagawa-ku, Tokyo, 141-0031 Japan
| | - Hironori Izawa
- International
Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department
of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 680-8552, Japan
| | - Akira Shigenaga
- Institute
of Health Biosciences, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shoumachi, Tokushima 770-8505, Japan
| | - Akira Otaka
- Institute
of Health Biosciences, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shoumachi, Tokushima 770-8505, Japan
| | - Hiroyuki Saito
- Institute
of Health Biosciences, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shoumachi, Tokushima 770-8505, Japan
| | - Kohsaku Kawakami
- International
Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Abstract
Abstract
Vesicles can be found in many applications like drug delivery or as models for cell membranes. It is often necessary to produce vesicles which are easy to adjust in size and which can be filled with different types of ingredients. In this publication we used phase transfer techniques in to form well defined vesicles. The synthesis of these particles occurred in three different steps. First, a water phase was covered by an oil phase containing surfactants. A water-in-oil emulsion was then added to the oil phase. In the third step the phase transfer was stimulated by sedimentation or centrifugation processes. In a series of experiments we measured the vesicle sizes and encapsulation efficiencies. Giant vesicles, formed by sedimentation processes had typical sizes between 1–10 μm. Smaller vesicles between 100–500 nm were observed after centrifugation processes. With both methods we could produce vesicles with encapsulation amounts about 10%.
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Gasbarri C, Guernelli S, Boncompagni S, Angelini G, Siani G, De Maria P, Fontana A. Fine-tuning of POPC liposomal leakage by the use of beta-cyclodextrin and several hydrophobic guests. J Liposome Res 2010; 20:202-10. [PMID: 19848554 DOI: 10.3109/08982100903244526] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The effect of entrapped beta-cyclodextrin (beta-CD) on the stability of multilamellar vesicles (MLVs) of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), prepared by the dehydration-rehydration method, was studied by monitoring the release of 5(6)-carboxyfluorescein encapsulated into the liposomes. Different hydrophobic guests, such as Fullerene C(60), have been incorporated into the POPC bilayer in order to modify the membrane composition. The kinetic results as well as ESI-MS measurements evidenced that the destabilizing activity of beta-CD is due to the formation of beta-CD inclusion complexes and the consequent removal of selected bilayer constituents from the liposomal membrane. Hence, when beta-CD was added to the liposomes in the form of a strong, water-soluble 2:1 beta-CD/C(60) inclusion complex, such a destabilizing effect was not observed. However, the same beta-CD/C(60) inclusion complex does not form as a result of C(60) extraction from the bilayer. This may be attributed either to the overwhelming concentration of POPC with respect to C(60) and/or to the fact that C(60) is largely aggregated in the bilayer. Turbidimetric and fluorimetric determinations of lamellarity and entrapped volume of the studied MLVs provided further evidence of the alteration of the liposomal bilayer as a consequence of the addition of beta-CD and/or the presence of the studied guests.
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Affiliation(s)
- Carla Gasbarri
- Dipartimento di Scienze del Farmaco, Università G. d'Annunzio, Chieti, Italy
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