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Metal-polyphenol-coordinated nanomedicines for Fe(II) catalyzed photoacoustic-imaging guided mild hyperthermia-assisted ferroustherapy against breast cancer 被引量:2
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作者 Xinying Yu Tongyi Shang +5 位作者 Guodong Zheng Hailong Yang Yuwei Li Yanjun Cai Guoxi Xie Bin Yang 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第4期1895-1900,共6页
Ferroustherapy has gained great attention for anti-cancer treatment in recent years. Enlightened by temperature-mediated Fenton reaction in industrial waste water removal, we designed a iron-based polyphenol-coordinat... Ferroustherapy has gained great attention for anti-cancer treatment in recent years. Enlightened by temperature-mediated Fenton reaction in industrial waste water removal, we designed a iron-based polyphenol-coordinated nanomedicines for mild hyperthermia-assisted anti-cancer ferroustherapy. In brief, Fe-GA@BSA nanoparticles was synthesized by self-assembly and sorafenib(SRF) was loaded into Fe-GA@BSA to establish Fe-GA@BSA-SRF nanomedicines. The result nanomedicines can induce ferroptosis in cancer cells by accelerating Fenton reaction. And the photothermal effect of Fe-GA@BSA-SRF was used for mild hyperthermia-assisted ferroustherapy. The nanomedicines performs good anti-cancer therapeutic efficacy by inducing the production of ROS and inhibiting glutathione peroxidase 4(GPX4) expression in vitro and in vivo. Besides, the broad absorption of Fe-GA@BSA-SRF in near infrared region endows it with photoacoustic imaging ability. This study provides ideas about rational design on iron-based nanoparticles for anti-cancer ferroustherapy. 展开更多
关键词 Ferroptosis Metal-polyphenol nanomedicines fenton reaction mild hyperthermia Photoacoustic imaging
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温和预氧化提高后续生物修复石油污染土壤 被引量:5
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作者 徐金兰 王慧芳 +2 位作者 王荣 章秋菊 王杰 《环境科学》 EI CAS CSCD 北大核心 2019年第11期5124-5132,共9页
为得到一种能促进后期生物阶段高效降解石油烃(TPH)的温和Fenton预氧化方式,本文考察了不同Fenton预氧化过程中羟基自由基(·OH)特征、后续生物修复过程中营养消耗、土著菌活性(CO2)以及TPH去除量的差异,结果表明,温和Fenton预氧化... 为得到一种能促进后期生物阶段高效降解石油烃(TPH)的温和Fenton预氧化方式,本文考察了不同Fenton预氧化过程中羟基自由基(·OH)特征、后续生物修复过程中营养消耗、土著菌活性(CO2)以及TPH去除量的差异,结果表明,温和Fenton预氧化组(·OH存在时间:73 h;双氧水浓度:225 mmol·L^-1)中·OH存在时间短H2O2用量少,残余细菌活性高,后续对石油的生物降解率高,不加菌就能够达到与加菌相同的修复效果(TPH去除率38%左右).且在不加菌的条件下,后期生物阶段TPH去除率,温和预氧化组(38%)要高于普通预氧化组(15.32%~33.15%).进一步分析各链烃的去除效果,发现在后续生物修复阶段,温和预氧化组能减少对链烃组分(C17~C21)的抑制;而对比各组的土著菌活性,发现温和预氧化可以适当刺激土著微生物生长并提高其活性,这些因素均有利于TPH的去除.温和预氧化在后期生物修复阶段对TPH的去除不加菌就能够达到与加菌相同的处理效果,是一种低成本可行的修复方式. 展开更多
关键词 温和fenton预氧化 羟基自由基 生物修复 链烃 石油污染土壤
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