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Critical evaluation of the glucose oxidase-like activity of gold nanoparticles stabilized by different polymers

Nano Research 2023年第4期16卷 4758-4766页

作者： Lili Xu Jinxing Chen Qian Ma Daiyong Chao Xinyang Zhu Ling Liu Jin Wang Youxing Fang Shaojun Dong State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China College of Chemistry Jilin UniversityChangchun 130012China Department of Chemistry and Physics Stony Brook UniversityStony BrookNY11794USA

Polymer stabilizers are widely used to synthesize gold nanoparticles(Au NPs)to prevent their aggregation and improve their *** stabilizers are known to greatly influence both the structure and size of Au NPs,limited efforts explore their effects on the activity of Au NPs for ***,different polymers are used as stabilizers to synthesize Au *** the glucose oxidase-like activity,we find that without the spatial barrier from stabilizers,naked Au NPs show significantly high catalytic activity as well as the worst *** the polymers,polyacrylic acid-stabilized Au NPs exhibit the highest activity,whose Vmax(0.74μM·s^(−1))is higher than that of the natural glucose oxidase(0.37μM·s^(−1))due to the smallest particle size(activity tests have exposed *** possess universal activities for aldose oxidation,whereas cannot retain activities in typical physiological *** findings highlight the role of polymer stabilizers in imposing effects on the glucose oxidase-like activity of Au NPs and provide a basis for further Au NPs engineering and applications.

关键词： polymer stabilizers gold nanoparticles glucose oxidase-like activity gold nanozyme

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A revisiting of transition metal phosphide(Cu_(3)P and FeP)nanozymes for two sugar-related reactions

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Nano Research 2023年第1期16卷 189-194页

作者： Daiyong Chao Zhixuan Yu Jinxing Chen Qing Dong Weiwei Wu Youxing Fang Ling Liu Shaojun Dong College of Chemistry Jilin UniversityChangchun 130012China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Transition metal phosphides(TMPs)are essential catalysts for some general catalytic ***,their potentials for biological catalysis have seldom been ***,we investigated the enzyme-like properties of four TMPs(FeP,CoP,Ni_(2)P,and Cu_(3)P)towards two sugar-related *** the four TMPs,Cu_(3)P nanoparticles(NPs)efficiently catalyzed the hydrolysis of glycosidic bonds as glycoside hydrolase mimics,and FeP NPs possessed both glucose oxidase-like(GOx-like)and peroxidase-like activities,which combined into a cascade reaction for glucose’s simple and one-step colorimetric biosensor without ***_(3)P and FeP NPs with distinctive enzyme-like activities have shown unique biological catalysis potentials for further applications with an attractive and challenging goal of developing nanomaterials to mimic natural enzymes,which encourages more efforts to reveal TMP’s capabilities towards biocatalysis.

关键词： transition metal phosphide glycoside hydrolase mimic glucose oxidase-like activity peroxidase-like activity cascade reaction

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Black phosphorus quantum dots as multifunctional nanozymes for tumor photothermal/catalytic synergistic therapy

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Nano Research 2022年第2期15卷 1554-1563页

作者： Hui Ding Daji Wang Haibing Huang Xiaozhu Chen Jie Wang Jinjie Sun Jianlin Zhang Lu Lu Beiping Miao Yanjuan Cai Kelong Fan Yongtian Lu Hongsong Dong Xiyun Yan Guohui Nie Minmin Liang Shenzhen Key Laboratory of Nanozymes and Translational Cancer Research Department of OtolaryngologyInstitute of Translational MedicineShenzhen Second Peoples Hospital/the First Affiliated Hospital of Shenzhen University Health Science CenterShenzhen 518035China Experimental Center of Advanced Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Key Laboratory of Protein and Peptide Pharmaceuticals Institute of BiophysicsChinese Academy of SciencesBeijing 100101China

Nanozymes are nanomaterials with enzyme-like properties that have attracted significant interest owing to their high stability,easy preparation,and tunable catalytic properties,especially in the field of cancer ***,the unfavorable catalytic effects of nanozymes in the acidic tumor microenvironment have limited their ***,we developed a biomimetic erythrocyte membrane-camouflaged ultrasmall black phosphorus quantum dots(BPQDs)nanozymes that simultaneously exhibited an exceptional near-infrared(NIR)photothermal property and dramatically photothermal-enhanced glucose oxidase(GOx)-like activity in the acidic tumor *** demonstrated the engineered BPQDs gave a photothermal conversion efficiency of 28.9%that could rapidly heat the tumor up to 50℃ while effectively localized into tumors via homing peptide iRGD leading after intravenously ***,the significantly enhanced GOx-like activity of BPQDs under NIR irradiation was capable of catalytical generating massive toxic reactive oxygen species via using cellular *** combining the intrinsic photothermal property and the unique photothermal-enhanced GOx-like catalytic activity,the developed BPQDs were demonstrated to be an effective therapeutic strategy for inhibiting tumor growth in *** believe that this work will provide a novel perspective for the development of nanozymes in tumor catalytic therapy.

关键词： nanozymes black phosphorus quantum dots glucose oxidase-like activity photothermal/catalytic synergistic therapy

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