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Ligand-Directed Caging Enables the Control of Endogenous DNA Alkyltransferase Activity with Light inside Live Cells

Angewandte Chemie 2022年第17期134卷

作者： Yixin Zhang Lili Han Xiaoxu Tian Chao Peng Yiyun Chen State Key Laboratory of Bioorganic and Natural Products Chemistry Centre of Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China School of Physical Science and Technology ShanghaiTech University 100 Haike Road Shanghai 201210 China National Facility for Protein Science in Shanghai Zhangjiang Lab Shanghai Advanced Research Institute Chinese Academy of Science Shanghai 201210 China School of Chemistry and Material Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences 1 Sub-lane Xiangshan Hangzhou 310024 China

The control of endogenous protein activity with light inside live cells is helpful for the high spatiotemporal probing of their dynamic roles. Herein, we report the first small-molecule-ligand-directed caging approach to control the endogenous human O 6 -alkylguanine-DNA alkyltransferase (AGT) activity with light, and the caged AGT is constructed from the native intracellular AGT. The photo-responsive O 6 -benzylguanine derivative O 6 -NBG3 is developed to site-specifically cage the AGT′s catalytic cysteine residue, and the light irradiation on-demand restores AGT′s activity in vitro, in bacteria, and in mammalian cells. With O 6 -NBG3, the alkylated AGT is dealkylated for the first time to recover the DNA repair activity in breast cancer MCF-7 cells by the dose-dependent light irradiation. This decaging strategy enables the localized modulation of endogenous AGT activity with high temporal precision without genetic engineering, which holds great potential for therapeutic applications.

关键词： DNA Alkyltransferases Endogenous Protein Modulation Photodecaging Small-Molecule-Ligands

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Novel Role of ER Stress and Mitochondria Stress in Serum-deprivation Induced Apoptosis of Rat Mesenchymal Stem Cells

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Current Medical Science 2018年第2期38卷 229-235页

作者： Tong QIU Yan-yan HE Xiao ZHANG Xiao-lin MA State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Material and Engineering Center Wuhan University of Technology Wuhan 430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan 430070 China International School of Materials Science and Engineering Wuhan University of Techonology Wuhan 430070 China Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients Hubei University of Education Wuhan 430205 China

The poor survival of mesenchymal stem cells （MSCs） compromises the efficacy of stem cell therapy. Growth factor deprivation is one of the important factors that have challenged the survival of donor MSCs in cell therapy. In this study, the aim was to evaluate the effect of serum deprivation on the cell death of MSCs and to investigate the underlying mechanisms. Apoptosis of MSCs was evaluated with Hoechst 33342/PI staining. Signaling pathways involved in serumdeprivation induced apoptosis were analyzed using Western blotting. The results revealed that serum deprivation induced apoptosis in MSCs within 72 h of treatment. Serum deprivation was shown to lead to protein expression alterations in Bax, Bcl-2, casepase-3, casepase-8, GRP78, and CHOP during experiments. The data suggested that the mitochondria death pathway, the extrinsic apoptotic pathway and the endoplastic reticulum（ER） stress pathway were all involved in MSCs apoptosis. The increase in expression of CHOP and the simultaneous decrease in Bcl- 2 expression suggest a synergistic effect in apoptosis induction in both the mitochondrion and the ER.

关键词： mesenchymal stem cells serum deprivation mitochondria pathway endoplasmicreticulum stress synergistic effects

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H2-free Semi-hydrogenation of Butadiene by the Atomic Sieving Effect of Pd Membrane with Tree-like Pd Dendrites Array

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Angewandte Chemie 2023年第38期135卷

作者： Yong-Qing Yan Zhao Wei Prof. Zhao Wang Yao Li Wei-Hao Wang Bo Jiang Prof. Bao-Lian Su Laboratory of Living Materials the State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei China Contribution: Data curation (lead) Formal analysis (lead) Investigation (lead) Methodology (lead) Writing - original draft (lead) Writing - review & editing (supporting) Contribution: Conceptualization (equal) Data curation (equal) Formal analysis (equal) Investigation (equal) Methodology (equal) Validation (equal) Writing - original draft (equal) Writing - review & editing (equal) Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Guangdong Laboratory Xianhu Hydrogen Valley Foshan 528200 P. R. China Contribution: Conceptualization (lead) Data curation (lead) Formal analysis (lead) Funding acquisition (lead) Investigation (lead) Methodology (lead) Project administration (lead) Resources (lead) Supervision (lead) Validation (lead) Visualization (lead) Writing - original draft (lead) Writing - review & editing (lead) Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Writing - original draft (supporting) Writing - review & editing (supporting) Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Writing - original draft (supporting) Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 rue de Bruxelles 5000 Namur Belgium

H 2 -free semi-hydrogenation at room temperature shows great advantage for replacing the thermocatalytic process in industry owing to the high energy and resource saving, however, remains great challenges. Herein, a tree-like Pd dendrites array decorated Pd membrane was constructed as the core device in an electrochemistry assisted gas-fed membrane reactor for butadiene semi-hydrogenation. It reveals that hydrogen atomic sieving effect of this Pd-based membrane under electrochemical condition was the key for semi-hydrogenation. The configuration study of Pd nanostructured membrane demonstrates that the penetration of hydrogen atoms through Pd membrane from electrochemical side to chemical side is affected by the consumption of hydrogen atom in semi-hydrogenation step. Such atomic sieving property of nanostructured Pd membrane with 5.1 times increase in catalytic active surface area brings above 14 times higher in butadiene conversion than that of bare Pd foil, with ≈90 % of butenes selectivity at butadiene conversion ≈98 % over 300 h of H 2 -free reaction under 15 mA cm −2 .

关键词： 1,3-Butadiene Pd Membrane Semi-Hydrogenation Unsaturated Hydrocarbons Water Electrolysis

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MOF Encapsulating N-Heterocyclic Carbene-Ligated Copper Single-Atom Site Catalyst towards Efficient Methane Electrosynthesis

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Angewandte Chemie 2021年第4期134卷

作者： Dr. Shenghua Chen Dr. Wen-Hao Li Dr. Wenjun Jiang Dr. Jiarui Yang Dr. Jiexin Zhu Dr. Liqiang Wang Dr. Honghui Ou Dr. Zechao Zhuang Prof. Mingzhao Chen Dr. Xiaohui Sun Prof. Dingsheng Wang Prof. Yadong Li Department of Chemistry Tsinghua University Beijing 100084 P. R. China Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Beijing 100094 P. R. China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 P. R. China Henan Province Industrial Technology Research Institute of Resources and Materials School of Material Science and Engineering Zhengzhou University Zhengzhou Henan 450001 P. R. China Institute of Environmental Research at Greater Bay Area Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of Education Guangzhou Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou 510006 P. R. China

The exploitation of highly efficient carbon dioxide reduction (CO 2 RR) electrocatalyst for methane (CH 4 ) electrosynthesis has attracted great attention for the intermittent renewable electricity storage but remains challenging. Here, N-heterocyclic carbene (NHC)-ligated copper single atom site (Cu SAS) embedded in metal–organic framework is reported (2Bn-Cu@UiO-67), which can achieve an outstanding Faradaic efficiency (FE) of 81 % for the CO 2 reduction to CH 4 at −1.5 V vs. RHE with a current density of 420 mA cm −2 . The CH 4 FE of our catalyst remains above 70 % within a wide potential range and achieves an unprecedented turnover frequency (TOF) of 16.3 s −1 . The σ donation of NHC enriches the surface electron density of Cu SAS and promotes the preferential adsorption of CHO* intermediates. The porosity of the catalyst facilitates the diffusion of CO 2 to 2Bn-Cu, significantly increasing the availability of each catalytic center.

关键词： CH4 electrosynthesis CO2RR Cu single-atom site catalyst n-heterocyclic carbene

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医用增材制造——从前沿技术到产品研发

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Engineering 2020年第11期6卷 31-41页

作者：邱贵兴丁文江田伟秦岭赵宇张联盟吕坚陈代杰袁广银吴成铁卢秉恒杜如虚陈继明 Mo Elbestawi 顾忠伟李涤尘孙伟赵远锦赫捷金大地刘斌张凯李鉴墨 Kam W.Leong 赵德伟郝定均敖英芳邓旭亮杨惠林徐少克陈英奇李龙樊建平聂国辉陈芸曾晖陈玮赖毓霄 Department of Orthopedics Peking Union Medical College Hospital Chinese Academy of Medical Science & Peking Union Medical College National Engineering Research Center of Light Alloys Net Forming & State Key Laboratory of Metal Matrix Composite Shanghai Jiao Tong University National Engineering Research Center of Mg Materials and Applications and School of Materials Science & Engineering Shanghai Jiao Tong University Department of Spine Surgery Beijing Jishuitan Hospital Center for Translational Medicine Research and Development Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Guangdong Engineering Laboratory of Biomaterials Additive Manufacturing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Center for Advanced Structural Materials City University of Hong Kong Shenzhen Research Institute Hong Kong Branch of National Precious Metals Material Engineering Research Center Department of Material Science and Engineering City University of Hong Kong Department of Mechanical Engineering City University of Hong Kong School of Pharmacy Shanghai Jiao Tong University China State Institute of Pharmaceutical Industry Shanghai Institute of Pharmaceutical Industry State Key Laboratory of High-Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of the Chinese Academy of Sciences Micro- and Nano-Technology Research Center State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong University Shien-Ming Wu School of Intelligent Engineering Guangzhou International Campus South China University of Technology Beijing Engineering Research Center of 3D Printing for Digital Medical Health Beijing University of Technology Beijing Engineering Research Center of Laser Technology Beijing University of Technology Key Laboratory of Trans-Scale Las

1.医用增材制造原料的研发和挑战医用增材制造的原料与其他多个领域使用的原料具有广泛通用性,这是构成三维(3D)打印领域的重要基础。这些领域的增材制造在材料类型、粉体特性、成型性和黏弹性等方面面临着相同的问题和挑战。例如,航空...

1.医用增材制造原料的研发和挑战医用增材制造的原料与其他多个领域使用的原料具有广泛通用性,这是构成三维(3D)打印领域的重要基础。这些领域的增材制造在材料类型、粉体特性、成型性和黏弹性等方面面临着相同的问题和挑战。例如,航空领域采用了多种金属材料,而生物医学领域会使用金属、聚合物和无机材料。在生物医学领域,

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Preface to Special Issue on the International Symposium on Environmental Catalysis (ISEC 2016)

Preface to Special Issue on the International Symposium on E...

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作者： Li, Jinlin Yu, Jiaguo Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education South-Central University for Nationalities China State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology China

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Effects of Intrinsic Pentagon Defects on Electrochemical Reactivity of Carbon Nanomaterials

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Angewandte Chemie 2019年第12期131卷

作者： Jiawei Zhu Yupeng Huang Wencen Mei Chenyang Zhao Chengtian Zhang Jian Zhang Ibrahim Saana Amiinu Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

Theoretical calculations reveal that intrinsic pentagons in the basal plane can contribute to the local electronic redistribution and the contraction of band gap, making the carbon matrix possess superior binding affinity and electrochemical reactivity. To experimentally verify this, a pentagon‐defect‐rich carbon nanomaterial was constructed by means of in situ etching of fullerene molecules (C 60 ). The electrochemical tests show that, relative to hexagons, such a carbon‐based material with abundant intrinsic pentagon defects makes much greater contribution to the electrocatalytic oxygen reduction activity and electric double layer capacitance. It shows a four‐electron‐reaction mechanism similar to commercial Pt/C and other transition‐metal‐based catalysts, and a higher specific capacitance than many reported metal‐free carbon materials. These results show the influence of intrinsic pentagon defects for developing carbon‐based nanomaterials toward energy conversion and storage devices.

关键词： Kohlenstoffmaterialien Pentagondefekte Sauerstoffreduktion Superkondensatoren Zink-Luft-Batterien

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Lithium/Sodium-Ion Batteries: In Situ, Atomic-Resolution Observation of Lithiation and Sodiation of WS2Nanoflakes: Implications for Lithium-Ion and Sodium-Ion Batteries (Small 24/2021)

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Small 2021年第24期17卷

作者： Yaobin Xu Ke Wang Zhenpeng Yao Joohoon Kang David Lam Dan Yang Wei Ai Chris Wolverton Mark C. Hersam Ying Huang Wei Huang Vinayak P. Dravid Jinsong Wu Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA NUANCE Center Northwestern University Evanston IL 60208 USA Frontiers Science Center for Flexible Electronics (FSCFE) Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA Department of Chemistry and Computer Science University of Toronto Toronto Ontario Canada School of Advanced Materials Science and Engineering Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an 710072 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research Centre Wuhan University of Technology 122 Luoshi Road Wuhan Hubei 430070 China

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Hierarchically porous materials:synthesis strategies and emerging applications

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Frontiers of Chemical Science and Engineering 2016年第3期10卷 301-347页

作者： Minghui Sun Chen Chen Lihua Chen Baolian Su State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Laboratory of Inorganic Materials Chemistry

Great interests have arisen over the last decade in the development of hierarchically porous *** hierarchical structure enables materials to have maximum structural functions owing to enhanced accessibility and mass transport properties,leading to improved performances in various *** porous materials are in high demand for applications in catalysis,adsorption,separation,energy and *** the present review,recent advances in synthesis routes to hierarchically porous materials are reviewed together with their catalytic contributions.

关键词： hierarchically porous materials synthesis application

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Development and Clinical Application of Phosphorus-Containing Drugs

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Medicine in drug discovery 2020年 8卷 100063页

作者： Hanxiao Yu He Yang Enxue Shi Wenjun Tang State Key Laboratory of Bio-Organic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences 345 Ling Ling Road Shanghai 200032 China. Shenzhen Grubbs Institute Southern University of Science and Technology Shenzhen 518055 China. State Key Laboratory of NBC Protection for Civilian Beijing 102205 China. School of Chemistry and Material Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences 1 Sub-lane Xiangshan Hangzhou 310024 China.

Phosphorus-containing drugs belong to an important class of therapeutic agents and are widely applied in daily clinical practices. Structurally, the phosphorus-containing drugs can be classified into phosphotriesters, phosphonates, phosphinates, phosphine oxides, phosphoric amides, bisphosphonates, phosphoric anhydrides, and others; functionally, they are often designed as prodrugs with improved selectivity and bioavailability, reduced side effects and toxicity, or biomolecule analogues with endogenous materials and antagonistic endoenzyme supplements. This review summarized the phosphorus-containing drugs currently on the market as well as a few promising molecules at clinical studies, with particular emphasis on their structural features, biological mechanism, and indications.

关键词： Drug modification Phosphite, phosphate Phosphorus-containing drugs Prodrugs

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