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Ternary NiCoTi-layered double hydroxide nanosheets as a pH-responsive nanoagent for photodynamic/chemodynamic synergistic therapy

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Fundamental Research 2024年第4期4卷 926-933页

作者： Tingting Hu Zhan Zhou Jiajia Zha gareth rwilliams Zhikang Wu Wei Zhao Weicheng Shen Hai Li Xisheng Weng Ruizheng Liang Chaoliang Tan State Key Laboratory of Chemical Resource Engineering Bejing Advanced Innovation Center for Soft Matter Science and EngineeringBejing University of Chemical TechnologyBeijing100029China College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China Department of Electrical Engineering City University of Hong KongHong Kong SAR 999077China UCL School of Pharmacy University College LondonLondon WCIN 1AXUnited Kingdom Institute of Advanced Materials(IAM)and Key Laboratory of Flexible Electronics(KLoFE) Nanjing Tech University(NanjingTech)Nanjing 211816China Department of Orthopedic Surgery State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongHong Kong SAR 999077China Shenzhen Research Institute City University of Hong KongShenzhen 518057China

Combining photodynamic therapy(PDT)with chemodynamic therapy(CDT)has been proven to be a promising strategy to improve the treatment efficiency of cancer,because of the synergistic therapeutic effect arising between the two ***,we report an inorganic nanoagent based on ternary NiCoTi-layered double hydroxide(NiCoTi-LDH)nanosheets to realize highly efficient photodynamic/chemodynamic synergistic *** NiCoTi-LDH nanosheets exhibit oxygen vacancy-promoted electron-hole separation and photogenerated holeinduced O_(2)-independent reactive oxygen species(ROS)generation under acidic circumstances,realizing in situ pH-responsive ***,due to the effective conversion between Co^(3+)and Co^(2+)caused by photogenerated electrons,the NiCoTi-LDH nanosheets catalyze the release of hydroxyl radicals(-OH)from H_(2)O_(2)through Fenton reactions,resulting in *** irradiation enhances the catalyzed ability of the NiCoTi-LDH nanosheets to promote the ROS generation,resulting in a better performance than TiO_(2)nanoparticles at pH *** vitro and in vivo experimental results show conclusively that NiCoTi-LDH nanosheets plus irradiation lead to efficient cell apoptosis and significant inhibition of tumor *** study reports a new pH-responsive inorganic nanoagent with oxygen vacancy-promoted photodynamic/chemodynamic synergistic performance,offering a potentially appealing clinical strategy for selective tumor elimination.

关键词： Layereddouble hydroxides Photodynamic therapy pH-responsive Chemodynamic therapy Oxygen vacancy

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