Deep penetration of a PDT drug into tumors by noncovalent drug-gold nanoparticle conjugates.

Deep penetration of a PDT drug into tumors by noncovalent drug-gold nanoparticle conjugates.
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DOI:
10.1021/ja108846h
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发表时间:
2011-03-02
影响因子:
15
通讯作者:
Burda C
Burda C
中科院分区:
化学1区
文献类型:
--
作者:
Cheng Y;Meyers JD;Broome AM;Kenney ME;Basilion JP;Burda C

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向肿瘤的有效药物递送变得越来越重要。 单次就诊诊断和治疗是未来治疗诊断学的目标。在本文中,非共价PDT癌症药物-金纳米颗粒(Au NP)缀合物系统在数小时内实现了药物的快速释放和深度渗透到肿瘤中。通过荧光成像、元素分析和组织学染色研究了 PDT 药物通过金纳米粒子被动积累进入肿瘤的药物递送机制。通过尿液中药物的荧光监测,在 7 天的测试期内,缀合物的药代动力学显示出快速的药物排泄。此外,本研究期间 Au NP 的生物分布表明 NP 已从小鼠体内清除。这项研究表明,通过 Au NP 的非共价传递为癌症药物深入肿瘤中心提供了一种有吸引力的方法。
Efficient drug delivery to tumors is of ever increasing importance. Single-visit diagnosis and treatment sessions are the goal of future theranostics. In this paper, a non-covalent PDT cancer drug-gold nanoparticle (Au NP) conjugate system performed a rapid drug release and deep penetration of the drug into tumors within hours. The drug delivery mechanism of the PDT drug through Au NPs into tumors by passive accumulation was investigated via fluorescence imaging, elemental analysis, and histological staining. The pharmacokinetics of the conjugates over a 7 day test period showed fast drug excretion, as monitored via the fluorescence of the drug in urine. Moreover, the biodistribution of Au NPs in this study period indicated clearance of the NPs from the mice. This study suggests that the non-covalent delivery via Au NPs provides an attractive approach for cancer drugs to penetrate deep into the center of tumors.
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