Cerenkov Radiation Induced Photodynamic Therapy Using Chlorin e6-Loaded Hollow Mesoporous Silica Nanoparticles.
Cerenkov Radiation Induced Photodynamic Therapy Using Chlorin e6-Loaded Hollow Mesoporous Silica Nanoparticles.
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使用负载 Chlorin e6 的中空介孔二氧化硅纳米颗粒进行切伦科夫辐射诱导光动力疗法。
DOI:
10.1021/acsami.6b10255
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发表时间:
2016-10-12
影响因子:
9.5
通讯作者:
Cai, Weibo
中科院分区:
文献类型:
--
作者:
Kamkaew, Anyanee;Cheng, Liang;Goel, Shreya;Valdovinos, Hector F.;Barnhart, Todd E.;Liu, Zhuang;Cai, Weibo
关键词:
Traditional photodynamic therapy (PDT) requires external light to activate photosensitizers for therapeutic purposes. However, the limited tissue penetration of light is still a major challenge for this method. To overcome this limitation, we report an optimized system that uses Cerenkov radiation for PDT by using radionuclides to activate a well-known photosensitizer (chlorin e6, Ce6). By taking advantage of hollow mesoporous silica nanoparticles (HMSNs) that can intrinsically radiolabel an oxophilic zirconium-89 (89Zr, t1/2 = 78.4 h) radionuclide, as well as possess great drug loading capacity, Ce6 can be activated by Cerenkov radiation from 89Zr in the same nanoconstruct. In vitro cell viability experiments demonstrated dose-dependent cell deconstruction as a function of the concentration of Ce6 and 89Zr. In vivo studies show inhibition of tumor growth when mice were subcutaneously injected with [89Zr]HMSN-Ce6, and histological analysis of the tumor section showed damage to tumor tissues, implying that reactive oxygen species mediated the destruction. This study offers a way to use an internal radiation source to achieve deep-seated tumor therapy without using any external light source for future applications.
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通讯作者:
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