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一种智能近红外响应的螯合铜基抗癌纳米平台,用于协同肿瘤靶向化放疗。

An intelligent NIR-responsive chelate copper-based anticancer nanoplatform for synergistic tumor targeted chemo-phototherapy.

机构信息

School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China.

出版信息

Nanoscale. 2017 Oct 19;9(40):15685-15695. doi: 10.1039/c7nr05003h.


DOI:10.1039/c7nr05003h
PMID:28994432
Abstract

The chelate copper-based anticancer drug bleomycin (BLM) is usually believed to bind metal ions especially Cu(ii) to generate the "activated BLM" for DNA cleavage. Herein, BLM and L-menthol (LM) co-loaded hollow mesoporous CuS nanoparticles (HMCuS NPs) with surface folic acid (FA) modification were formulated to construct an intelligent NIR-responsive nanoplatform for synergistic tumor targeted chemo-phototherapy. With the tumor targeting ability of the folate receptor (FR)-positive, FA-HMCuS/BLM/LM could pinpoint tumor cells efficiently. Under NIR irradiation, the versatile HMCuS would be bound to exploit the merits of phototherapy (including PTT and PDT-like effects) for cancer treatment. Meanwhile, benefiting from the controllable "solid-liquid" (S-L) phase transition feature of LM as a gatekeeper, FA-HMCuS/BLM/LM offered a platform for simultaneous NIR-mediated temperature-responsive BLM and copper ion release, which further initiated the generation of the "activated BLM". As a matter of course, the remarkable synergistic combination of Cu-dependent chemo-phototherapy in vitro and in vivo by such a smart all-in-one drug delivery nanoplatform developed here provided information for advancing nanotherapy in biomedical fields.

摘要

螯合铜基抗癌药物博来霉素(BLM)通常被认为与金属离子(尤其是 Cu(ii))结合,生成用于 DNA 切割的“激活 BLM”。在此,我们制备了负载 BLM 和 L-薄荷醇(LM)的中空介孔 CuS 纳米粒子(HMCuS NPs),并用叶酸(FA)对其进行表面修饰,构建了一种智能近红外响应型纳米平台,用于协同肿瘤靶向化疗-光疗。具有叶酸受体(FR)阳性的靶向肿瘤能力,FA-HMCuS/BLM/LM 可以有效地靶向肿瘤细胞。在近红外光照射下,多功能 HMCuS 会被结合,以利用光疗(包括 PTT 和 PDT 样效应)的优点来治疗癌症。同时,由于 LM 作为门控剂的可控“固-液”(S-L)相变特性,FA-HMCuS/BLM/LM 提供了一个平台,用于同时进行近红外介导的温度响应 BLM 和铜离子释放,从而进一步引发“激活 BLM”的生成。当然,通过这种智能一体化药物递送纳米平台,在体外和体内进行的基于 Cu 的化学-光疗协同作用非常显著,为推进生物医学领域的纳米治疗提供了信息。

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