A photochemical approach for controlled drug release in targeted drug delivery.
A photochemical approach for controlled drug release in targeted drug delivery.
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DOI:
10.1016/j.bmc.2011.12.020
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发表时间:
2012-02-01
影响因子:
3.5
通讯作者:
Baker, James R., Jr.
中科院分区:
文献类型:
--
作者:
Choi, Seok Ki;Verma, Manisha;Silpe, Justin;Moody, Ryan E.;Tang, Kenny;Hanson, Jeffrey J.;Baker, James R., Jr.
Photochemistry provides a unique mechanism that enables the active control of drug release in cancer-targeting drug delivery. This study investigates the light-mediated release of methotrexate, an anticancer drug, using a photocleavable linker strategy based on o-nitrobenzyl protection. We evaluated two types of the o-nitrobenzyl-linked methotrexate for the drug release study and further extended the study to a fifth-generation poly(amidoamine) dendrimer carrier covalently conjugated with methotrexate via the o-nitrobenzyl linker. We performed the drug release studies by using a combination of three standard analytical methods that include UV/vis spectrometry, 1H NMR spectroscopy, and anal. HPLC. This article reports that methotrexate is released by the photochemical mechanism in an actively controlled manner. The rate of the drug release varies in response to multiple control parameters, including linker design, light wavelength, exposure time, and the pH of the medium where the drug release occurs.
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