- Oral presentation
- Open Access
Molecular modeling of lipid drug formulations
© Birru et al; licensee BioMed Central Ltd. 2012
- Published: 1 May 2012
- Molecular Dynamic
- Gibbs Free Energy
- Bile Salt
- Propylene Glycol
Molecular dynamics studies have provided useful insight into the structure and dynamics of different types of aggregates, including mixed glycerides with and without propylene glycol  and bile salts . To date, such studies have not been performed on lipid drug formulations . The objective of this research is to develop a molecular dynamics protocol to examine the interaction between drugs and formulations at the atomic level. To evaluate and parameterize the force field of choice we are calculating Gibbs free energy of solvation of a number of alcohols and short poly -(ethylene glycol) polymers. Following this, the aggregation behaviour of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), sodium glycochenodeoxycholate (GDX), different digestion products and polyethylene glycol surfactants will be investigated. Moreover, the phase diagram s of three component systems composed of i) bile salts, digested products and water and ii) surfactants, lipids and water will be modelled.
Simulations are being performed using the molecular dynamics software suite GROMACS. Calculations are being performed on a high performance computing cluster at the Victorian Life Sciences Com putation Initiative (VLSCI). The methods highlighted in this study will prove to be an essential tool for formulators of lipid systems for oral administration.
- Warren DB, Chalmers DK, Pouton CW: Structure and Dynamics of Glyceride Lipid Formulations, with Propylene Glycol and Water. Mol Pharm. 2009, 6: 604-614. 10.1021/mp8001667.View ArticleGoogle Scholar
- Warren DB, et al: Molecular Dynamics Simulations of Spontaneous Bile Salt Aggregation. Colloid Surface A. 2006, 280: 182-193. 10.1016/j.colsurfa.2006.02.009.View ArticleGoogle Scholar
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.