Polymer-drug interactions in tyrosine-derived triblock copolymer nanospheres: a computational modeling approach.

Polymer-drug interactions in tyrosine-derived triblock copolymer nanospheres: a computational modeling approach.
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DOI:
10.1021/mp900114w
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发表时间:
2009-09
影响因子:
4.9
通讯作者:
Kohn J
Kohn J
中科院分区:
医学2区
文献类型:
--
作者:
Costache AD;Sheihet L;Zaveri K;Knight DD;Kohn J

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A combination of Molecular Dynamics (MD) simulations and docking calculations was employed to model and predict polymer-drug interactions in self-assembled nanoparticles consisting of ABA-type triblock copolymers, where A-blocks are poly(ethylene glycol) units and B-blocks are low molecular weight tyrosine-derived polyarylates. This new computational approach was tested on three representative model compounds: nutraceutical curcumin, anti-cancer drug paclitaxel and pre-hormone vitamin D3. Based on this methodology, the calculated binding energies of polymer-drug complexes can be correlated with maximum drug loading determined experimentally. Furthermore, the modeling results provide an enhanced understanding of polymer-drug interactions, revealing subtle structural features that can significantly affect the effectiveness of drug loading (as demonstrated for a fourth tested compound, anticancer drug camptothecin). The present study suggests that computational calculations of polymer-drug pairs hold the potential of becoming a powerful prescreening tool in the process of discovery, development and optimization of new drug delivery systems, reducing both the time and the cost of the process.
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