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Transport Properties of Ibuprofen Encapsulated in Cyclodextrin Nanosponge Hydrogels: A Proton HR-MAS NMR Spectroscopy Study
Published on: August 15, 2016
Molecular dynamics simulation of drug uptake by polymer
M Subashini1, Padma V Devarajan, Ganeshchandra S Sonavane
1Department of Biotechnology, IIT-Madras, Chennai 600036, India.
Journal of Molecular Modeling
|August 6, 2010
Summary
Molecular dynamics simulations accurately predict drug uptake by polymers. This method aids in developing effective polymer-based drug delivery systems by understanding drug-polymer interactions.
Area of Science:
- Polymer science
- Computational chemistry
- Drug delivery
Background:
- Polymer-based drug delivery systems offer controlled release of therapeutics.
- Predicting drug-polymer interactions is crucial for optimizing drug uptake.
- Molecular dynamics (MD) simulations provide a powerful tool for studying these interactions at the molecular level.
Purpose of the Study:
- To model and predict drug uptake by various polymers using molecular dynamics simulations.
- To investigate the influence of drug properties and polymer functional groups on drug-polymer interactions.
- To establish a correlation between simulated interaction energy and experimental drug uptake data.
Main Methods:
- Utilized molecular dynamics (MD) simulations with Gromacs and MM+ force fields.
- Modeled three drugs (doxorubicin, silymarin, gliclazide) and six polymers (alginic acid, sodium alginate, chitosan, Gantrez AN119, Eudragit L100, Eudragit RSPO).
- Calculated interaction energy (IE) considering electric-dipole, van der Waals, and hydrogen bond forces in a water environment.
Main Results:
- A strong linear correlation (R² = 0.65) was found between calculated IE and previous experimental drug uptake data.
- Maximum drug uptake by polymeric nanoparticles (NP) occurred in water.
- Hydrophilic interaction between NP and water was inversely correlated with drug uptake.
Conclusions:
- MD simulations offer a reliable method for approximating drug uptake in polymer-based systems.
- The findings can guide the rational design of advanced polymer-based drug delivery platforms.
- Understanding molecular interactions is key to enhancing drug delivery efficiency.
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