Journal
JOURNAL OF CHEMICAL INFORMATION AND MODELING
Volume 55, Issue 9, Pages 1894-1902Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jcim.5b00152
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Funding
- Chulalongkorn University
- Ratchadaphiseksomphot Endowment Fund
- Asia Research Center (ARC) at Chulalongkorn University
- Kasetsart University Research and Development Institute (KURDI) at Kasetsart University
- Faculty of Science and Kasetsart University [REG1-8]
- Thailand Research Fund [IRG5780008, MRG5580223]
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Beta cydodextrin (beta CD) is well-known as a potent drug carrier improving drug solubility, stability, and bioavailability. The water layer adjacent to the membrane surface and lipophilic domain itself are a controlling barrier for drug transport. However, the molecular details of the interaction between beta CD and the lipid membrane has not yet been clearly explained. Here, molecular dynamics simulations were performed to visualize the interaction process of the beta CD molecule with the lipid bilayer for six microseconds in total. Our results show that beta CD passively diffuses into the lipid bilayer by pointing its open secondary rim toward the lipid polar groups and then remains at the phosphate and glycerol-ester groups with hydrogen bond formation. The information obtained from this study may suggest that the association of beta CD at the cellular membrane plays an important role for the transfer of drug and the extraction of cholesterol.
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