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Modeling of highly efficient drug delivery system induced by self-assembly of nanocarriers: A density functional study

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Abstract

Owing to the importance of drug delivery in cancer or other diseases’ therapy, the targeted drug delivery (TDD) system has been attracting enormous interest. Herein, we model the TDD system and design a novel rod-like nanocarrier by using the coarse grained model-based density functional theory, which combines a modified fundamental measure theory for the excluded-volume effects, Wertheim’s first-order thermodynamics perturbation theory for the chain connectivity and the mean field approximation for van der Waals attraction. For comparison, the monomer nanocarrier TDD system and the no nanocarrier one are also investigated. The results indicate that the drug delivery capacity of rod-like nanocarriers is about 62 times that of the no nanocarrier one, and about 6 times that of the monomer nanocarriers. The reason is that the rod-like nanocarriers would self-assemble into the smectic phase perpendicular to the membrane surface. It is the self-assembly of the rod-like nanocarriers that yields the driving force for the targeted delivery of drugs inside the cell membrane. By contrast, the conventional monomer nanocarrier drug delivery system lacks the driving force to deliver the drugs into the cell membrane. In short, the novel rod-like nanocarrier TDD system may improve the drug delivery efficiency. Although the model in this work is simple, it is expected that the system may provide a new perspective for cancer targeted therapy.

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Authors and Affiliations

  1. Division of Molecular and Materials Simulation, State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China

    Jian Jiang & DaPeng Cao

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  1. Jian Jiang
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  2. DaPeng Cao
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Correspondence to DaPeng Cao.

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Jiang, J., Cao, D. Modeling of highly efficient drug delivery system induced by self-assembly of nanocarriers: A density functional study. Sci. China Chem. 56, 249–255 (2013). https://doi.org/10.1007/s11426-012-4752-1

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