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Mesoporous silica coated Gd2(CO3)3:Eu hollow nanospheres for simultaneous cell imaging and drug delivery†
RSC Advances ( IF 3.9 ) Pub Date : 2016-06-22 00:00:00 , DOI: 10.1039/c6ra07444h
Yanli Wu 1, 2, 3, 4 , Xianzhu Xu 4, 5, 6, 7 , Xi Chen 1, 2, 3, 4 , Ruchun Yang 1, 2, 3, 4 , Qiang Xiao 1, 2, 3, 4 , Yongxiu Li 4, 8, 9, 10
Affiliation  

In the present work, mesoporous silica coated Gd2(CO3)3:Eu hollow nanospheres (Gd2(CO3)3:Eu@mSiO2 HNSs) were successfully synthesized via a facial route and characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) infrared spectrometer (IR), energy dispersive X-ray spectrum (EDS) and Brunauer–Emmet–Teller (BET) surface area analysis. The results indicate that the prepared monodispersed nanoparticles are hollow spheres with a 400 nm sphere core and 30 nm thick shell and have a narrow size distribution. In vitro cell imaging of the hollow nanosphere shows Gd2(CO3)3:Eu@mSiO2 HNSs were able to enter NCI-H460 lung cancer cells rapidly. The possibility of using the synthesized hollow nanospheres for magnetic resonance imaging was also demonstrated, and the hollow nanosphere displays a clear T1-weighted effect and could potentially serve as a bimodal T1-positive contrast agent. The drug loading and controlled release performance of Gd2(CO3)3:Eu@mSiO2 HNSs was evaluated with doxorubicin hydrochloride (DOX) as a model drug at different pH values (pH = 7.4, 5.8). The Gd2(CO3)3:Eu@mSiO2 HNSs showed sustainable pH dependent drug release property. Furthermore, the in vitro cytotoxic effect against NCI-H460 lung cancer cells of the DOX-loaded carriers was investigated in detail. In all, the Gd2(CO3)3:Eu@mSiO2 HNSs as a new type of theragnostic (imaging and treatment) agent can provide new opportunities in cancer treatment.

中文翻译:

介孔二氧化硅涂层的Gd 2(CO 33:Eu中空纳米球,可同时进行细胞成像和药物输送

在本工作中,成功地通过面部路线合成了介孔二氧化硅包覆的Gd 2(CO 33:Eu中空纳米球(Gd 2(CO 33:Eu @ mSiO 2 HNSs),并通过X射线衍射(XRD)对其进行了表征。 ),透射电子显微镜(TEM),扫描电子显微镜(SEM)红外光谱仪(IR),能量色散X射线光谱(EDS)和Brunauer–Emmet–Teller(BET)表面积分析。结果表明,所制备的单分散纳米颗粒为空心球,具有400nm的球核和30nm厚的壳,并且具有窄的尺寸分布。体外中空纳米球的细胞成像显示Gd 2(CO 33:Eu @ mSiO 2 HNSs能够迅速进入NCI-H460肺癌细胞。还证明了使用合成的空心纳米球进行磁共振成像的可能性,并且空心纳米球显示出清晰的T 1加权效应,并有可能充当双峰T 1阳性造影剂。以盐酸阿霉素(DOX)作为模型药物,在不同pH值(pH = 7.4,5.8)下评价了Gd 2(CO 33:Eu @ mSiO 2 HNSs的载药量和控释性能。d2(CO 3 3:Eu @ mSiO 2 HNSs具有可持续的pH依赖性药物释放特性。此外,详细研究了载有DOX的载体对NCI-H460肺癌细胞的体外细胞毒性作用。总而言之,Gd 2(CO 3 3:Eu @ mSiO 2 HNSs作为新型的吻合器(成像和治疗)剂可以为癌症治疗提供新的机会。
更新日期:2016-06-22
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