A radio-theranostic nanoparticle with high specific drug loading for cancer therapy and imaging

被引:33
作者
Satterlee, Andrew B. [1 ,2 ,3 ,4 ]
Yuan, Hong [5 ]
Huang, Leaf [1 ,2 ,3 ,4 ]
机构
[1] Univ N Carolina, Eshelman Sch Phorm, Div Mol Pharmaceut, Chapel Hill, NC 27599 USA
[2] Univ N Carolina, Ctr Nanotechnol Drug Delivery, Chapel Hill, NC 27599 USA
[3] UNC, Chapel Hill, NC 27599 USA
[4] NCSU Joint Dept Biomed Engn, Chapel Hill, NC 27599 USA
[5] Univ N Carolina, Dept Radiol, Biomed Res Imaging Ctr, Chapel Hill, NC 27599 USA
关键词
Cancer; Theranostic; Nanoparticle; High specific drug loading; CALCIUM-PHOSPHATE NANOPARTICLES; HUMAN PROSTATE-CANCER; GEMCITABINE MONOPHOSPHATE; CISPLATIN NANOPARTICLES; TUMOR MICROENVIRONMENT; IRRADIATED COLLAGEN; ULTRAVIOLET-LIGHT; DELIVERY; SIRNA; FIBROBLASTS;
D O I
10.1016/j.jconrel.2015.08.048
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We have developed a theranostic nanoparticle delivering the model radionuclide Lu-177 based on the versatile lipid-calcium-phosphate (LCP) nanoparticle delivery platform. Characterization of Lu-177-LCP has shown that radionuclide loading can be increased by several orders of magnitude without affecting the encapsulation efficiency or the morphology of Lu-177-LCP, allowing consistency during fabrication and overcoming scale-up barriers typical of nanotherapeutics. The choice of Lu-177 as a model radionuclide has allowed in vivo anticancer therapy in addition to radiographic imaging via the dual decay modes of Lu-177. Tumor accumulation of Lu-177-LCP was measured using both SPECT and Cerenkov imaging modalities in live mice, and treatment with just one dose of Lu-177-LCP showed significant in vivo tumor inhibition in two subcutaneous xenograft tumor models. Microenvironment and cytotoxicity studies suggest that Lu-177-LCP inhibits tumor growth by causing apoptotic cell death via double-stranded DNA breaks while causing a remodeling of the tumor microenvironment to a more disordered and less malignant phenotype. (c) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:170 / 182
页数:13
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