Developing Nanoceria-Based pH-Dependent Cancer-Directed Drug Delivery System for Retinoblastoma

被引:50
作者
Gao, Ruijuan [1 ,2 ,3 ]
Mitra, Rajendra Narayan [1 ]
Zheng, Min [1 ]
Wang, Kai [1 ]
Dahringer, Jesse Christine [1 ]
Han, Zongchao [1 ,4 ,5 ]
机构
[1] Univ N Carolina, Dept Ophthalmol, 2208 Marsico Hall,125 Mason Farm Rd, Chapel Hill, NC 27599 USA
[2] Chinese Acad Med Sci, Inst Med Biotechnol, 1 Tiantan Xili, Beijing 100050, Peoples R China
[3] Peking Union Med Coll, 1 Tiantan Xili, Beijing 100050, Peoples R China
[4] Univ N Carolina, Carolina Inst NanoMed, Chapel Hill, NC 27599 USA
[5] Univ N Carolina, Eshelman Sch Pharm, Div Pharmacoengn & Mol Pharmaceut, Chapel Hill, NC 27599 USA
关键词
CXCR4; targeting; doxorubicin; nanoceria; reactive oxygen species; retinoblastoma; INTRACELLULAR DELIVERY; TARGETING CXCR4; CELLS; NANOGEL; NANOCARRIERS; RESISTANCE; DIFFUSION; RECEPTOR; MICELLES; ACIDOSIS;
D O I
10.1002/adfm.201806248
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Development of a single combinatorial nanoplatform technology to target cancer cells has been an unprecedented reality in boosting synergistic antitumor activities and in reducing off-target effects. An antitumor delivery system is designed using a chemotherapy drug and a tumor target molecule covalently linked to cerium oxide nanoparticles (nanoceria). Nanoceria have a unique redox activity in that they possess antioxidant activity at physiological pH but have an intrinsic oxidase activity at acidic pH. The system is integrated with 1) extracellular pH responsive functionality, 2) tumor cell targetable (CXC chemokine receptor 4, CXCR4 receptor specific) antagonist, 3) reactive oxygen species (ROS) inducible nanoceria, and 4) chemotherapeutic doxorubicin (DOX). These combinatorial nanoparticles (AMD-GCCNPs-DOX) are not only sensitive to the extracellular acidic pH conditions and targeted tumor cells but can also instantaneously induce ROS and release DOX intracellularly to enhance the chemotherapeutic activity in retinoblastoma cells (WERI-Rb-1 and Y79) and in xenograft (Y79/GFP-luc grafted) and genetic p107s (Rb-Lox/lox, p107(+/)-, p130(-/-)) orthotopic mice models. A lucidly engineered combinatorial nanoconstruct is introduced that offers a viable and simple strategy for delivering a cocktail of therapeutics into tumor cells under acidosis, exhibiting a promising new future for clinical therapeutic opportunities.
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页数:18
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