期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 36, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201801783
关键词
core-shell nanoplatforms; hypoxic microenvironments; O-2 generation; photodynamic therapy; tumor metastasis
类别
资金
- National Natural Science Foundation of China [51690152, 21721005]
Hypoxia, one of the representative characteristics in solid tumors, not only reduces the effectiveness of multiple treatments, but also relates to the tumor invasion and metastasis. Here, a hybrid core-shell nanoplatform to produce adequate oxygen, supporting for more effective tumor treatment, is developed. Composed of polydopamine cores, platinum nanoparticle interlayers, and zirconium-porphyrin (PCN) shells, the hybrid core-shell nanoplatform works like a nanofactory, providing necessary products at different time and space. Platinum nanoparticle interlayers can catalyze the endogenous H2O2 to O-2, which plays a dual rule in the enhanced tumor treatment. In the presence of light irradiation, O-2 can be converted into the lethal reactive oxygen species by the PCN shell. In the absence of light irradiation, O-2 ameliorates the hypoxic microenvironment, thereby reduces the invasion and metastasis of the tumor. Through a synergism of enhanced treatment and reduced metastasis, tumors could be treated more vigorously.
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