Molecular analysis of interactions between a PAMAM dendrimer–paclitaxel conjugate and a biomembrane

Literature Information

Publication Date 2015-07-27
DOI 10.1039/C5CP02242H
Impact Factor 3.676
Authors

TianJian Lu


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Abstract

Understanding the underlying mechanism of nanomedicine–biomembrane interactions is important for the design and optimization of payload delivery systems. This study investigates the interactions between polyamidoamine (PAMAM) dendrimer–paclitaxel conjugates and biomembranes using coarse-grained molecular dynamics simulations. We found that acidic conditions (e.g., pH ∼ 5) and membrane asymmetry can improve the conjugate penetration. Paclitaxel (PTX) distributions on a G4 PAMAM dendrimer can affect interactions via the penetration mechanism, although they have no significant effect on interactions via the adsorption mechanism. The random distribution of PTX can enhance the ability of PTX molecules to pass through asymmetric membranes. Furthermore, the penetration process becomes more difficult with increasing paclitaxel loading ratios. These results provide molecular insights into the precise translocation mechanism of dendrimer–drug conjugates and thus provide suggestions for drug design and delivery.

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DOI: 10.1039/C8AN90084A

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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