Polycaprolactone nanocomposite systems used to deliver ifosfamide anticancer drug: molecular dynamics simulations
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Molecular dynamics (MD) simulations were accomplished on polycaprolactone (PCL) nanocomposite systems composed of hydroxyapatite (HA) nanoparticles (0–4%) to deliver ifosfamide (IF) anticancer drug in order to achieve the most suitable drug delivery system (DDS). It was shown that the free volume (FV) was the greatest for the PCL-HA2-IF whereas the lowest value was measured for the PCL-HA0-IF. The fractional free volume (FFV) values varied similar to the FV values so that the PCL-HA2-IF had the maximum FFV (22.48%) but PCL-HA0-IF illustrated the minimum FFV (17.89%). The smallest interchain distances measured for the PCL-HA2-IF established that the greatest intermolecular interactions occurred in the PCL-HA2-IF. The highest diffusion coefficient (0.1267 × 10−4 cm2/s) was obtained for the PCL-HA0-IF whereas the lowest one was achieved for the PCL-HA2-IF (0.0688 × 10−4 cm2/s) that confirmed the drug diffusion was the slowest/most controlled in the PCL-HA2-IF which would bring about the most effective drug delivery.
KeywordsMolecular dynamics simulation Polycaprolactone polymeric nanocomposite Drug delivery system Ifosfamide anticancer drug Diffusion coefficient
The authors would like to appreciatively express their thanks to the Research Office of Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran, for the financial support of this work. Also, they are grateful to the High Performance Computing Cluster of Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran, for affording the computational facilities (software and hardware) to accomplish the MD simulations. The authors also thank Dr. Jakub Krajniak for his helpful comments.
Compliance with ethical standards
Conflicts of interest
The authors do not have any personal or financial conflicts of interest.
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