Persistent luminescent nanoparticles as energy mediators for enhanced photodynamic therapy with fractionated irradiation

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	Persistent luminescent nanoparticles as energy mediators for enhanced photodynamic therapy with fractionated irradiation
	Liu, Jun; Wang, Jing; Li, Yujie; Mao, Rihua; Wang, Yong; Yan, Xiuping
刊名	J. Mat. Chem. B
	2017
卷号	5 期号:29 页码:5793
通讯作者	xpyan@nankai.edu.cn ; jliu@siom.ac.cn
英文摘要	The excitation wavelengths of most porphyrin-based photosensitizers are in the ultraviolet (UV) spectrum. Prolonged irradiation of living cells and tissues with UV light during the clinical application of photodynamic therapy (PDT) may cause DNA damage and cell death. Here, we report a novel persistent-luminescent nanoparticle (PLNP)-based PDT approach that uses the afterglow property of PLNPs to greatly reduce the dose of UV light while maintaining the desired cancer suppression effect. Multifunctional PLNPs coated with mesoporous silica layers and subsequently conjugated to a photosensitizer were evaluated. These nanoconjugates showed high colloidal stability and biocompatibility. Furthermore, they generated a moderate amount of O-1(2) through efficient energy transfer from the nanoparticle to the photosensitizer, which can efficiently damage cancer cells. In addition to their UV-excited luminescence, PLNPs also exhibited a long-lasting luminescence afterglow. Thus, PLNPs can serve as a persistent light source for PDT activation after excitation by an external light source is stopped. When fractionated light was used for excitation instead of continuous light at equivalent irradiation doses, confocal microscopy revealed that the photosensitizer-conjugated PLNPs showed a significantly enhanced cancer cell killing ability. Moreover, quantitative flow cytometry showed that fractionated light irradiation (60 s/100 s on/off cycle) produced up to ten times more cancer cell apoptosis/necrosis than the same dose of continuous light irradiation did. These results indicate that photosensitizer-conjugated PLNPs combined with fractionated irradiation show good potential for low-dose UV-mediated PDT activation.
收录类别	SCI
资助信息	National Natural Science Foundation of China (NSFC) [11274327, 61521093, 61527821, 11575276]; Chinese Academy of Sciences [YZ201538, QYZDB-SSW-JSC002]; Shanghai Institute of Optics and Fine Mechanics [1603051J00]; Shanghai Sailing Program [17YF1421300]
WOS记录号	WOS:000406616400011
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27698]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Liu, Jun,Wang, Jing,Li, Yujie,et al. Persistent luminescent nanoparticles as energy mediators for enhanced photodynamic therapy with fractionated irradiation[J]. J. Mat. Chem. B,2017,5(29):5793.
APA	Liu, Jun,Wang, Jing,Li, Yujie,Mao, Rihua,Wang, Yong,&Yan, Xiuping.(2017).Persistent luminescent nanoparticles as energy mediators for enhanced photodynamic therapy with fractionated irradiation.J. Mat. Chem. B,5(29),5793.
MLA	Liu, Jun,et al."Persistent luminescent nanoparticles as energy mediators for enhanced photodynamic therapy with fractionated irradiation".J. Mat. Chem. B 5.29(2017):5793.