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Scintillator-Based Nanohybrids with Sacrificial Electron Prodrug for Enhanced X-ray-Induced Photodynamic Therapy
Nano Letters ( IF 9.6 ) Pub Date : 2018-07-27 00:00:00 , DOI: 10.1021/acs.nanolett.8b02409
Han Wang 1, 2 , Bin Lv 3 , Zhongmin Tang 1, 2 , Meng Zhang 1, 2 , Weiqiang Ge 3 , Yanyan Liu 4 , Xinhong He 5 , Kuaile Zhao 5 , Xiangpeng Zheng 3 , Mingyuan He 4 , Wenbo Bu 1, 4
Affiliation  

X-ray-induced photodynamic therapy (X-PDT) has high depth of penetration and has considerable potential for applications in cancer therapy. Scintillators and heavy metals have been adopted to absorb X-rays and transmit the energy to photosensitizers. However, the low efficiency of converting X-rays to reactive oxygen species (ROS) presents a challenge for the use of X-PDT to cure cancer. In this study, a new method based on LiLuF4:[email protected]2@Ag3PO4@Pt(IV) nanoparticles (LAPNP) is presented that could be used to enhance the curative effects of X-PDT. To make full use of the fluorescence produced by nanoscintillators (LiLuF4:Ce), a cisplatin prodrug Pt(IV) was utilized as a sacrificial electron acceptor to increase the yield of hydroxyl radicals (·OH) by increasing the separation of electrons and holes in photosensitizers (Ag3PO4). Additionally, cisplatin is produced upon the acceptance of electrons by Pt(IV) and further enhances the damage caused by ·OH. Via two-step amplification, the potential of LAPNP to enhance the effects of X-PDT has been demonstrated.

中文翻译:

基于闪烁体的纳米杂化物与牺牲电子前药,以增强X射线诱导的光动力疗法。

X射线诱导的光动力疗法(X-PDT)具有很高的渗透深度,在癌症治疗中具有巨大的应用潜力。已经采用了闪烁体和重金属来吸收X射线并将能量传输给光敏剂。但是,将X射线转换为活性氧(ROS)的效率低,对使用X-PDT治愈癌症提出了挑战。在这项研究中,提出了一种基于LiLuF 4的新方法:[电子邮件保护] 2 @Ag 3 PO 4 @Pt (IV)纳米粒子(LAPNP),可用于增强X-PDT的疗效。充分利用纳米闪烁体产生的荧光(LiLuF 4:Ce),将顺铂前药Pt(IV)用作牺牲电子受体,通过增加光敏剂(Ag 3 PO 4)中电子与空穴的分离来提高羟基自由基(·OH)的产率。此外,顺铂在Pt(IV)接受电子时产生,并进一步增强了·OH引起的破坏。通过两步扩增,已证明了LAPNP增强X-PDT效应的潜力。
更新日期:2018-07-27
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