期刊
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
卷 32, 期 4, 页码 448-457出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201400119
关键词
-
资金
- National Institute of Biomedical Imaging and Bioengineering [1R01EB012099, K01EB006910]
- BRTT Center for Targeted NPs for Imaging and Therapeutics at Case Western Reserve University
- National Foundation for Cancer Research
Targeted drug delivery using epidermal growth factor peptide-targeted gold nanoparticles (EGF(pep)-Au NPs) is investigated as a novel approach for delivery of photodynamic therapy (PDT) agents, specifically Pc 4, to cancer. In vitro studies of PDT show that EGF(pep)-Au NP-Pc 4 is twofold better at killing tumor cells than free Pc 4 after increasing localization in early endosomes. In vivo studies show that targeting with EGF(pep)-Au NP-Pc 4 improves accumulation of fluorescence of Pc 4 in subcutaneous tumors by greater than threefold compared with untargeted Au NPs. Targeted drug delivery and treatment success can be imaged via the intrinsic fluorescence of the PDT drug Pc 4. Using Pc 4 fluorescence, it is demonstrated in vivo that EGF(pep)-Au NP-Pc 4 impacts biodistribution of the NPs by decreasing the initial uptake by the reticuloendothelial system (RES) and by increasing the amount of Au NPs circulating in the blood 4 h after IV injection. Interestingly, in vivo PDT with EGF(pep)-Au NP-Pc 4 results in interrupted tumor growth when compared with EGF(pep)-Au NP control mice when selectively activated with light. These data demonstrate that EGF(pep)-Au NP-Pc 4 utilizes cancer-specific biomarkers to improve drug delivery and therapeutic efficacy over untargeted drug delivery.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据