光动力疗法
化学发光
碱性磷酸酶
化学
光毒性
肝癌
癌症
纳米技术
材料科学
医学
生物化学
酶
内科学
有机化学
体外
作者
Nannan Fan,Ping Li,Chuanchen Wu,Xin Wang,Yangfan Zhou,Bo Tang
出处
期刊:ACS applied bio materials
[American Chemical Society]
日期:2021-01-20
卷期号:4 (2): 1740-1748
被引量:34
标识
DOI:10.1021/acsabm.0c01504
摘要
Photodynamic therapy (PDT) is a promising therapeutic approach that has been extensively applied in curing cancers. However, the limited penetration depth of external light makes PDT only practical for some superficial tumor treatments. Moreover, an external light irradiation might cause damages to adjacent normal tissues. Additionally, the poor targeting ability of PDT can lead to side effects like skin phototoxicity. Therefore, a PDT strategy addressing these drawbacks is urgently exploited. Herein, we constructed a chemiluminescence theranostics platform named MSN@H6L@β-CD@AMPPD NPs for liver cancer-specific, in situ diagnosis and therapy without an external light source. Through the interaction of host–guest, 3-[(2-spiroadamatane)-4-methoxy-4-(3-phosphoryloxy)-phenyl-1,2-dioxetane] dioxetane, a chemiluminescence substrate of the liver cancer biomarker alkaline phosphatase was integrated with β-cyclodextrin. Then, the β-cyclodextrin was covalently bound to the mesoporous silica loaded with (4-carboxyphenyl) porphyrin to finally obtain the MSN@H6L@β-CD@AMPPD NPs. These NPs can be specifically hydrolyzed by the liver cancer alkaline phosphatase and lead to the liver cancer-targeting chemiluminescence. Subsequently, (4-carboxyphenyl) porphyrin was excited by the chemiluminescence through chemiluminescence resonance energy transfer and created both near-infrared fluorescence and 1O2. This strategy greatly promotes the penetration depth and targeting ability of the PDT. In brief, the platform accomplishes a PDT nano-theranostics for liver cancer and provides a method for the imaging, diagnosis, and therapy of tumors in deep tissue.
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