Catalytic core-shell nanoparticles with self-supplied calcium and H(2)O(2) to enable combinational tumor inhibition.
Catalytic core-shell nanoparticles with self-supplied calcium and H(2)O(2) to enable combinational tumor inhibition.
复制标题
具有自供钙和 H2O2 的催化核壳纳米粒子,可实现组合肿瘤抑制
DOI:
10.1186/s12951-021-01055-4
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发表时间:
2021-10-12
影响因子:
10.2
通讯作者:
Zhou Y
中科院分区:
文献类型:
--
作者:
Kong H;Fang C;Chu Q;Hu Z;Fu Y;Han G;Li X;Zhou Y
Nanoparticles, presenting catalytic activity to induce intracellular oxidative species, have been extensively explored for tumor treatment, but suffer daunting challenges in the limited intracellular H2O2 and thus suppressed therapeutic efficacy. Here in this study, a type of composite nanoparticles, consisting CaO2 core and Co-ferrocene shell, is designed and synthesized for combinational tumor treatment. The findings indicate that CaO2 core can be hydrolyzed to produce large amounts of H2O2 and calcium ions at the acidic tumor sites. Meanwhile, Co-ferrocene shell acts as an excellent Fenton catalyst, inducing considerable ROS generation following its reaction with H2O2. Excessive cellular oxidative stress triggers agitated calcium accumulation in addition to the calcium ions released from the particles. The combined effect of intracellular ROS and calcium overload causes significant tumor inhibition both in vitro and in vivo. The online version contains supplementary material available at 10.1186/s12951-021-01055-4.
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