|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Rice yellow stunt virus activates polyamine biosynthesis to promote viral propagation in insect vectors by disrupting ornithine decarboxylase antienzyme function显示文摘Intracellular polyamines(putrescine,spermidine,and spermine)have emerged as important molecules for viral infection;however,how viruses activate polyamines biosynthesis to promote viral infection remains unclear.Ornithine decarboxylase 1(ODC1)and its antienzyme 1(OAZ1)are major regulators of polyamine biosynthesis in animal cells.Here,we report that rice yellow stunt virus(RYSV),a plant rhabdovirus,could activate putrescine biosynthesis in leafhoppers to promote viral propagation by inhibiting OAZ1 expression.We observed that the reduction of putrescine biosynthesis by treatment with difluormethylornithine(DFMO),a specific nontoxic inhibitor of ODC1,or with in vitro synthesized dsRNAs targeting ODC1 mRNA could inhibit viral infection.In contrast,the supplement of putrescine or the increase of putrescine biosynthesis by treatment with ds RNAs targeting OAZ1 mRNA could facilitate viral infection.We further determined that both RYSV matrix protein M and ODC1 directly bind to the ODC-binding domain at the C-terminus of OAZ1.Thus,viral propagation in leafhoppers would decrease the ability of OAZ1 to target and mediate the degradation of ODC1,which finally activates putrescine production to benefit viral propagation.This work reveals that polyamine-metabolizing enzymes are directly exploited by a vector-borne virus to increase polyamine production,thereby facilitating viral infection in insect vectors. | Xiao-Feng Zhang Tianbao Zeng Yunjie Xie Yuemin Zheng Huanqin Wang Hanbin Lin Zongwen Wang Taiyun Wei | 2021 | Science China(Life Sciences)2021，64，9： | 0 |
| 2 | Highly efficient and anti-poisoning single-atom cobalt catalyst for selective hydrogenation of nitroarenes显示文摘Developing non-precious metal catalysts to selectively reduce functionalized nitroarenes with high efficiency is urgently desirable for the production of value-added amines.Herein,we report a novel,efficient,anti-poisoning single-atom cobalt catalyst(Co-NAC)for the highly selective hydrogenation of the nitro to amino group for nitroarenes baring various functional groups,including vinyl,cyano,and halogen.Using a combination of structure characterization techniques,we have confirmed that the cobalt species are predominantly present in the form of four-coordinated Co single sites anchored on nitrogen-assembly carbon(NAC)as the ordered mesoporous support.Co-NAC catalysts enable the full conversion and>99%selectivity with molecular H2 as a green reductant under mild conditions(80℃,2 MPa H2).As for the selective hydrogenation of 3-nitrostyrene,Co-NAC catalyst affords high catalytic productivity(19.7 h-1),which is superior to the cobalt nanoparticles(NPs)catalysts and most of the recently reported Co-based catalysts.This is attributed to the highly accessible atomically-dispersed Co active sites,the high surface area with ordered-mesoporous morphology and the prominent high content of nitrogen dopants.Notably,Co-NAC catalyst displays resistance towards sulfur-containing poisons(20 equivalents)and strong non-oxidizing acid(8 M),showing great potential for continuous application in the chemical industry. | Yuemin Lin Renfeng Nie Yuting Li Xun Wu Jiaqi Yu Shaohua Xie Yajing Shen Shanjun Mao Yuzhuo Chen Dan Lu Zongbi Bao Qiwei Yang Qilong Ren Yiwen Yang Fudong Liu Long Qi Wenyu Huang Zhiguo Zhang | 2022 | Nano Research2022，15，12： | 0 |
| 3 | Identification and characterization of components显示文摘In the information age, components in all kinds of electronic products occupy an important position, in particular, some common electronic components, electronic products is essential to the basic material. The performance of various types of components, features, the use of the scope of the function of the electronic product design and manufacturing has a very important role especially in the past period. Along with the rapid development of the electronics industry, new requirements and components industry is also constantly using new materials. New technology has introduced new products for the development of electronic products to open up new ways. This chapter will be a number of commonly used electronic components according to its type, performance characteristics and testing. As a brief introduction and strive to have a wide range of components have a general understanding in order to facilitate product design and expand the range of components used. | Yueshan Lin Yuemin Shan Lishi Dong | 2018 | Progress of Electrical and Electronic Engineering2018，1，1： | 0 |
| 4 | Room-temperature hydrogenation of halogenated nitrobenzenes over metal-organic-framework-derived ultra-dispersed Ni stabilized by N-doped carbon nanoneedles显示文摘Ultra-dispersed Ni nanoparticles(7.5 nm)on nitrogen-doped carbon nanoneedles(Ni@NCNs)were prepared by simple pyrolysis of Ni-based metal–organic-framework for selective hydrogenation of halogenated nitrobenzenes to corresponding anilines.Two different crystallization methods(stirring and static)were compared and the optimal pyrolysis temperature was explored.Ni@NCNs were systematically characterized by wide analytical techniques.In the hydrogenation of p-chloronitrobenzene,Ni@NCNs-600(pyrolyzed at 600°C)exhibited extraordinarily high performance with 77.9 h^(–1)catalytic productivity and>99%p-chloroaniline selectivity at full p-chloronitrobenzene conversion under mild conditions(90°C,1.5 MPa H2),showing obvious superiority compared with reported Ni-based catalysts.Notably,the reaction smoothly proceeded at room temperature with full conversion and>99%selectivity.Moreover,Ni@NCNs-600 afforded good tolerance to various nitroarenes substituted by sensitive groups(halogen,nitrile,keto,carboxylic,etc.),and could be easily recycled by magnetic separation and reused for 5 times without deactivation.The adsorption tests showed that the preferential adsorption of–NO2 on the catalyst can restrain the dehalogenation of p-chloronitrobenzene,thus achieving high p-chloroaniline selectivity.While the high activity can be attributed to high Ni dispersion,special morphology,and rich pore structure of the catalyst. | Yuemin Lin Yuanyuan Zhang Renfeng Nie Kai Zhou Yao Ma Mingjie Liu Dan Lu Zongbi Bao Qiwei Yang Yiwen Yang Qilong Ren Zhiguo Zhang | 2022 | Frontiers of Chemical Science and Engineering2022，16，12： | 0 |
| 5 | High-resolution aging niche of human adipose tissues显示文摘Dear Editor,Age-dependent adipose tissue malfunction raises the risk of diseases like diabetes,cardiovascular disease,and even cancer by contributing to metabolic decline,heterotopic fat storage,and chronic systemic inflammation.1 Understanding adipose tissue aging requires in-depth knowledge of the cellular and molecular properties of various adipose tissue cell types.Although the heterogeneity of the cell population during mouse aging has been studied,2 little is known about the cellular and molecular basis of human adipose tissues aging. | Wenyan Zhou Junxin Lin Yan Xie Xueqing Hu Xudong Yao Yuemin Ou Hongwei Wu Yiyang Yan Xiumao Li Jianan Lou Aaron Trent Irving James Q.Wang Hongwei Ouyang | 2023 | Signal Transduction and Targeted Therapy2023，8，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员