介孔材料
介孔二氧化硅
光热治疗
材料科学
癌症治疗
生物相容性
肿瘤微环境
药物输送
介孔有机硅
纳米颗粒
表面改性
纳米材料
催化作用
纳米技术
化学
癌症
癌症研究
肿瘤细胞
有机化学
医学
内科学
冶金
生物
物理化学
作者
Wei Tang,Wenpei Fan,Zhantong Wang,Weizhong Zhang,Shiyi Zhou,Yijing Liu,Zhèn Yáng,E. Shao,Guofeng Zhang,Orit Jacobson,Lingling Shan,Rui Tian,Siyuan Cheng,Lisen Lin,Yulun Dai,Zheyu Shen,Gang Niu,Jin Xie,Xiaoyuan Chen
出处
期刊:ACS Nano
[American Chemical Society]
日期:2018-11-12
卷期号:12 (12): 12269-12283
被引量:93
标识
DOI:10.1021/acsnano.8b06058
摘要
Featured with a large surface area, uniform interpenetrating mesopores, diverse organic framework hybridization, and well-defined surface properties, the hollow mesoporous organosilica nanoparticle (HMON) represents a promising paradigm in drug delivery systems with excellent biocompatibility. However, effective tumor accumulation and precise cancer theranostics of the HMON still remain a challenge. In this study, an "ammonia-assisted hot water etching" method is applied for the successful construction of sub-50 nm thioether/phenylene dual-hybridized HMON with low hemolytic effect. Particularly, the surface modification with Mo(VI)-based polyoxometalate (POM) clusters drives the self-assembly of HMON in the mild acidic tumor microenvironment (TME) to achieve enhanced tumor retention and accumulation. More importantly, the reducibility-activated Mo(VI)-to-Mo(V) conversion within POM not only endows the POM-anchored HMON with outstanding TME-responsive photoacoustic (PA) imaging contrast and photothermal therapy (PTT) performance but also plays an indispensable role in controllably triggering the decomposition of the Mn2(CO)10 payload for CO release, which gives rise to remarkable synergistic PTT-enhanced CO gas therapy for complete tumor eradication. By harnessing the unique acidic and redox properties of TME, the judiciously designed smart POM-anchored HMON nanoplatform is expected to act as a "magic bomb" to selectively destroy cancer without damaging normal tissues. This nanoplatform holds significant potential in realizing TME-responsive self-assembly for enhanced tumor accumulation and precise tumor-specific synergistic therapy, which is very promising for clinical translation.
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