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55篇 您的检索式:作者名="Zeming Wang"
    题名 作者 年代 出处 被引量
1Differential stem cell aging kinetics in Hutchinson-Gilford progeria syndrome and Werner syndrome显示文摘Hutchinson-Gilford 早衰症候群(HGPS ) 和沃纳症候群(WS ) 是二最好描绘的人的 progeroid 症候群。HGPS 被一个点变化在 lamin A (LMNA ) 基因引起,导致截断的蛋白质 productprogerin 的生产。WS 被变化在 WRN 基因引起,编码 loss-of-function RecQ DNA helicase。这里,由基因编辑,我们创造了 isogenic 人的胚胎的干细胞(转换字符) 与异质接合(G608G/+) 或同型结合(G608G/G608G ) LMNA 变化和 biallelic WRN 大美人为为 HGPS 和 WS 致病建模,分别地。当转换字符和 endothelial 房间(EC ) 没介绍早熟的老朽的任何特征时, HGPS 间充质、 WS 间充质的干细胞(MSC ) 与不同动力学显示出联系老化的显型。当 HGPS-MSCs 展出了迟了发作的尖锐早衰 characterisitcs 时, WS-MSCs 有早发作的温和早衰显型。一起拿,我们的学习比较并且形成对照不同病理 underpinning 二早衰混乱,并且提供可靠干细胞为病理学、生理的老化识别新治疗学的策略的基于的模型。Zeming Wu Weiqi Zhang Moshi Song Wei Wang Gang Wei Wei Li Jinghui Lei Yu Huang Yanmei Sang Piu Chan Chang Chen Jing Qu Keiichiro Suzuki Juan Carlos Izpisua Belmonte Guang-Hui Liu 2018Protein & Cell2018,9,4:15
2Chemical screen identifies a geroprotective role of quercetin in premature aging显示文摘Aging increases the risk of various diseases. The main goal of aging research is to find therapies that attenuate aging and alleviate aging-related diseases. In this study, we screened a natural product library for geroprotective compounds using Werner syndrome (WS) human mesenchymal stem cells (hMSCs), a premature aging model that we recently established. Ten candidate compounds were identified and quercetin was investigated in detail due to its leading effects. Mechanistic studies revealed that quercetin alleviated senescence via the enhancement of cell proliferation and restoration of heterochromatin architecture in WS hMSCs. RNA-sequencing analysis revealed the transcriptional commonalities and differences in the geroprotective effects by quercetin and Vitamin C. Besides WS hMSCs, quercetin also attenuated cellular senescence in Hutchinson-Gilford progeria syndrome (HGPS) and physiological-aging hMSCs. Taken together, our study identifies quercetin as a geroprotective agent against accelerated and natural aging in hMSCs, providing a potential therapeutic intervention for treating age-associated disorders.Lingling Geng Zunpeng Liu Weiqi Zhang Wei Li Zeming Wu Wei Wang Ruotong Ren Yao Su Peichang Wang Liang Sun Zhenyu Ju Piu Chan Moshi Song Jing Qu Guang-Hui Liu 2019Protein & Cell2019,10,6:13
3Single-cell transcriptomic atlas of primate cardiopulmonary aging显示文摘Aging is a major risk factor for many diseases,especially in highly prevalent cardiopulmonary comorbidities and infectious diseases including Coronavirus Disease 2019(COVID-19).Resolving cellular and molecular mechanisms associated with aging in higher mammals is therefore urgently needed.Here,we created young and old non-human primate single-nucleus/cell transcriptomic atlases of lung,heart and artery,the top tissues targeted by SARS-CoV-2.Analysis of cell type-specific aging-associated transcriptional changes revealed increased systemic inflammation and compromised virus defense as a hallmark of cardiopulmonary aging.With age,expression of the SARS-CoV-2 receptor angiotensin-converting enzyme 2(ACE2)was increased in the pulmonary alveolar epithelial barrier,cardiomyocytes,and vascular endothelial cells.We found that interleukin 7(IL7)accumulated in aged cardiopulmonary tissues and induced ACE2 expression in human vascular endothelial cells in an NF-κB-dependent manner.Furthermore,treatment with vitamin C blocked IL7-induced ACE2 expression.Altogether,our findings depict the first transcriptomic atlas of the aged primate cardiopulmonary system and provide vital insights into age-linked susceptibility to SARS-CoV-2,suggesting that geroprotective strategies may reduce COVID-19 severity in the elderly.Shuai Ma Shuhui Sun Jiaming Li Yanling Fan Jing Qu Liang Sun Si Wang Yiyuan Zhang Shanshan Yang Zunpeng Liu Zeming Wu Sheng Zhang Qiaoran Wang Aihua Zheng Shuguang Duo Yang Yu Juan Carlos Izpisua Belmonte Piu Chan Qi Zhou Moshi Song Weiqi Zhang Guang-Hui Liu 2021Cell Research2021,31,4:10
4SIRT7 antagonizes human stem cell aging as a heterochromatin stabilizer显示文摘SIRT7,a sirtuin family member implicated in aging and disease,is a regulator of metabolism and stress responses.It remains elusive how human somatic stem cell populations might be impacted by SIRT7.Here,we found that SIRT7 expression declines during human mesenchymal stem cell(hMSC)aging and that SIRT7 deficiency accelerates senescence.Mechanistically,SIRT7 forms a complex with nuclear lamina proteins and heterochromatin proteins,thus maintaining the repressive state of heterochromatin at nuclear periphery.Accordingly,deficiency of SIRT7 results in loss of heterochromatin,derepression of the LINE1 retrotransposon(LINE1),and activation of innate immune signaling via the cGAS-STING pathway.These agingassociated cellular defects were reversed by overexpression of heterochromatin proteins or treatment with a LINE1 targeted reverse-transcriptase inhibitor.Together,these findings highlight how SIRT7 safeguards chromatin architecture to control innate immune regulation and ensure geroprotection during stem cell aging.Shijia Bi Zunpeng Liu Zeming Wu Zehua Wang Xiaoqian Liu Si Wang Jie Ren Yan Yao Weiqi Zhang Moshi Song Guang-Hui Liu Jing Qu 2020Protein & Cell2020,11,7:10
5Stabilization of heterochromatin by CLOCK promotes stem cell rejuvenation and cartilage regeneration显示文摘Accumulating evidence indicates an association between the circadian clock and the aging process.However,it remains elusive whether the deregulation of circadian clock proteins underlies stem cell aging and whether they are targetable for the alleviation of aging-associated syndromes.Here,we identified a transcription factor-independent role of CLOCK,a core component of the molecular circadian clock machinery,in counteracting human mesenchymal stem cell(hMSC)decay.CLOCK expression was decreased during hMSC aging.In addition,CLOCK deficiency accelerated hMSC senescence,whereas the overexpression of CLOCK,even as a transcriptionally inactive form,rejuvenated physiologically and pathologically aged hMSCs.Mechanistic studies revealed that CLOCK formed complexes with nuclear lamina proteins and KAP1,thus maintaining heterochromatin architecture and stabilizing repetitive genomic sequences.Finally,gene therapy with lentiviral vectors encoding CLOCK promoted cartilage regeneration and attenuated age-related articular degeneration in mice.These findings demonstrate a noncanonical role of CLOCK in stabilizing heterochromatin,promoting tissue regeneration,and mitigating aging-associated chronic diseases.Chuqian Liang Zunpeng Liu Moshi Song Wei Li Zeming Wu Zehua Wang Qiaoran Wang Si Wang Kaowen Yan Liang Sun Tomoaki Hishida Yanning Cai Juan Carlos lzpisua Belmonte Pedro Guillen Piu Chan Qi Zhou Weiqi Zhang Jing Qu Guang-Hui Liu 2021Cell Research2021,31,2:8
6Single atom accelerates ammonia photosynthesis显示文摘Atomically dispersed metal has gained much attention because of the new opportunities they offer in catalysis. However, it is still crucial to understand the mechanism of single-atom catalysis at molecular level for expanding them to other more difficult catalytic reactions, such as ammonia synthesis from nitrogen. In fact, developing ammonia synthesis under ambient conditions to overcome the high energy consumption in well-established Haber-Bosch process has fascinated scientists for many years.Herein, we demonstrate that single Cu atom yields facile valence-electron isolation from the conjugated π electron cloud of p-CN. Electron spin resonance measurements reveal that these isolated valence electrons can be easily excited to generate free electrons under photo-illumination, thus inducing high efficient photo-induced ammonia synthesis under ambient conditions.The NH_3 producing rate of copper modified carbon nitride(Cu-CN) reached 186 μmol g^(-1) h^(-1) under visible light irradiation with the quantum efficiency achieved 1.01% at 420 nm monochromatic light. This finding surely offers a model to open up a new vista for the ammonia synthesis at gentle conditions. The introduction of single atom to isolate the valence electron also represents a new paradigm for many other photocatalytic reactions, since the most photoinduced processes have been successfully exploited sharing the same origin.Pengcheng Huang Wei Liu Zhihai He Chong Xiao Tao Yao Youming Zou Chengming Wang Zeming Qi Wei Tong Bicai Pan Shiqiang Wei Yi Xie 2018Science China Chemistry2018,61,9:8
7Single small molecule-assembled nanoparticles mediate efficient oral drug delivery显示文摘Oral drug delivery,which requires surviving the harsh environment in the gastrointestinal(Gl)tract and penetrating the intestinal epithelium,has not bee n achieved using simple formulatio n nan oparticles(NPs).Medici nal natural products(MNPs)have bee n widely used in traditi onal medicine for disease management through oral consumption.However,most pharmacologically active compounds within MNPs do not have the properties suitable for oral applicatio ns.We hypothesize that some MNPs contain n atural nano materials that can convert those compounds into oral formulations by forming NPs.After screening 66 MNPs,we identified five classes of small molecules that form NPs,many of which are capable of efficient drug encapsulation and Gl penetration.We show that one of them,dehydrotrametenolic acid(DTA),is capable of mediating oral delivery for effective disease treatment.We determined that DTA NPs assemble through hydrogen bonding and penetra怕the Gl tract via apical sodium-depe ndent bile acid tran sporter.Our study reveals a no vel class of single comp orient,small molecule-assembled NPs for oral drug delivery,and suggests a n ovel approach to modernizi ng MNPs through nano material discovery.Xin Yang Chao Ma Zeming Chen Jun Liu Fuyao Liu Rongbin Xie Haitian Zhao Gang Deng Ann TChen Ningbo Gong Lei Yao Pengjian Zuo Kangkang Zhi Jiacheng Wang Xiaobin Gao Jing Wang Louzhen Fan Jiangbing Zhou 2019Nano Research2019,12,10:4
8Human INO80/YY1 chromatin remodeling complex transcriptionally regulates the BRCA2-and CDKNIA-interacting protein (BCCIP) in cells显示文摘Jiaming Su Yi Sui Jian Ding Fuqiang Li Shuang Shen Yang Yang Zeming Lu Fei Wang Lingling Cao Xiaoxia Liu Jingji Jin Yong Cai 2016Protein & Cell2016,7,10:3
9Solidification microstructures of Al-Zn-Mg-Cu alloys prepared by spraydeposition and conventional casting methods显示文摘高力量 Al-Zn-Mg-Cu 合金被水花免职准备并且扔技术。Al-Zn-Mg-Cu 合金的微观结构用扫描电子显微镜学,传播电子显微镜学,和 X 光检查衍射被学习。在水花免职和常规演员组准备的合金的微观结构的第二等的阶段被检验。结果显示在常规扔条件下面,合金的微观结构揭示了粗糙的 Al/Mg ( ZnCu )的存在扔的 2 个最容易溶解的阶段,和水花处理原因在尺寸的明显的修正,形态学,并且在分离的微观结构以及减小的第二等的阶段的分发。扔水花的 Al-Zn-Mg-Cu 合金的优异微观结构被归因于高冷却率,并且与快速的团结过程联系了。HE Xiaoqing XIONG Baiqing SUN Zeming ZHANG Yongan WANG Feng ZHU Baohong 2008Rare Metals2008,27,2:3
10Synthesis,Characterization of Rare-Earth Metal Chlorides Bearing Indolyl-Based NCN Pincer Ligand and Their Catalytic Activity toward 1,4-cis Polymerization of Isoprene显示文摘A novel indolyl-based NCN pincer ligand precursor HL(HL=(1-(2-(CH_(2))_(4)NCH_(2)CH_(2))-3-(2,6-ipr_(2)C_(6)H_(3)N=CH)C_(8)H_(5)N))was rationally and precisely designed,and successfully prepared in a high yield.Lithiation of HL with ^(n)BuLi in n-hexane,followed by treatment with RECl_(3) in THF led to the isolation of rare-earth metal chlorides in monomeric form(κ^(3)-L)RECI_(2)(THF)(RE=Sc(2),Yb(3)),and dimeric form[(κ^(3)-L)RECI(THF)(μ-Cl)]_(2)(RE=Er(4),Y(5))bearing the novel indolyl-based NCN pincer ligand in designed pincer ligation depending on different metal ionic radii;and the chloride bridged rare-earth metal and lithium mixed complexes in form(κ^(2)-L)_(2)RE(μ-Cl)_(2)Li(THF)_(2)(RE=Y(6),Dy(7)).All complexes were fully characterized and their structures were determined.The diamagnetic complexes 2,5 and 6 were furtherly characterized by the NMR spectroscopic method.The catalytic activity studies revealed that the central metal ions,borates,aluminum alkyls,and ligation of the central metal ions have influences on catalytic activity,and regio-and stereoselectivity for the polymerization of isoprene.With cooperation of the cocatalysts,the pincer-type yttrium chloride 5 initiated the isoprene polymerization with a high activity producing polymers with high regio-and stereoselectivity(1,4-cis polymers up to 99.6%),and the Mn as high as 8.76×10^(5).Zeming Huang Shaowu Wang Xiancui Zhu Yun Wei Qingbing Yuan Shuangliu Zhou Xiaolong Mu Hua Wang 2021Chinese Journal of Chemistry2021,39,12:2
11From mandatory icebreaker guiding to a permission regime: changes to the new Russian legislation of the Northern Sea Route显示文摘This article focuses on two issues. The first concerns definitions of the Northern Sea Route(NSR) in old and new Russian legislation, and the second relates to Russian rules on icebreaker guiding. Based on a comprehensive comparative analysis of relevant Russian legal provisions enacted in 2013 and previous laws in this area, we offer the following conclusions.(1) Our legal analysis indicates that Russia's view of the NSR as a historical national transportation route has not changed. However, the new law redefines the scope and coverage of the NSR, which now comprises the internal waters, territorial sea, adjacent zone, and the exclusive economic zone of the Russian Federation. In fact, the new law resolves previous ambiguity regarding extension of the NSR boundary to the high seas.(2) Based on an analysis of the new rules on icebreaker guiding, the article concludes that NSR is transitioning from a mandatory icebreaker guiding regime into a permit regime. This is particularly evident in its provision of a concrete, practical, and predictable clause on permissible or impermissible conditions relating to independent navigation. According to the new rules, it is possible for foreign ships to undertake independent navigation in the NSR. The Russian NSR policy, therefore, appears to have changed significantly, and has future potential for opening the NSR up to the international community.ZHANG Xia ZOU Leilei TU Jingfang QIAN Zongqi WANG Zeming YANG Huigen 2014Advances in Polar Science2014,25,3:2
12Serum metabolomics reveals the deregulation of fatty acids metabolism in hepatocellular carcinoma and chronic liver diseases显示文摘Lina Zhou Quancai Wang Peiyuan Yin Wenbin Xing Zeming Wu Shili Chen Xin Lu Yong Zhang Xiaohui Lin Guowang Xu 2012Analytical and Bioanalytical Chemistry2012,,1:2
13FDTD Analysis of EW Wave Circulating by a Magnetized Ferrite Body in Free Space显示文摘Rushan Chen Edward K. N. Yung Zeming Xie Yong Wang 1998International Journal of Infrared and Millimeter Waves1998,,2:1
14Study on the Narrow Band Level Set Method显示文摘Wang Hongyuan Zhou Zeming 2006Journal of Communication and Computer2006,3,9:1
15Progressive tool failure in high-speed dry milling of Ti-6Al-4V alloy with coated carbide tools显示文摘Anhai Li Jun Zhao Hanbing Luo Zhiqiang Pei Zeming Wang 2012The International Journal of Advanced Manufacturing Technology (-)2012,,5:1
16Liquid-liquid equilibria for aromatics extraction systems with tetraethylene glycol显示文摘WANG Wen GOU Zeming ZHU Shenlin 1998J Chem Eng Data1998,43,1:1
17Structure and hydrogen storage characteristics of as-spun Mg-Y-Ni-Cu alloys显示文摘Experimental alloys with compositions of Mg(25-x)YxNi9Cu(x=0,1,3,5,7)have been successfully prepared through melt spinning method.The phase compositions and microstructures were measured by X-Ray diffraction(XRD)and high-resolution transmission electron microscopy(HRTEM).The de-/hydrogenation properties were measured by utilizing Sievert apparatus,differential scanning calorimetry(DSC)and thermal gravimetric analyzer(TGA)connected with a H2 detector.The Arrhenius and Kissinger methods were adopted to calculate their dehydrogenation activation energies.The results show that hydrogen absorption kinetics of the alloys notably decline while their hydrogen desorption kinetics conspicuously improve with spinning rate increasing.The dehydrogenation activation energy markedly decreases with spinning rate increasing,which makes the hydrogen desorption kinetics improve.The thermodynamic parameters(H and S absolute values)clearly decrease with spinning rate increasing.The hydrogen absorption capacity exhibits different trends with spinning rate rising.Specifically,hydrogen absorption capacity increases at the beginning and declines later for Y1 alloy,but that of Y7 alloy always decreases with spinning rate growing.Yanghuan Zhang Pengpeng Wang Zhonghui Hou Zeming Yuan Yan Qi Shihai Guo 2019Journal of Materials Science & Technology2019,35,8:1
18Fabricating pyridinic N-B sites in porous carbon as efficient metal-free electrocatalyst in conversion CO_(2)into CH_(4)显示文摘Electrochemical reduction of CO_(2)(CO_(2)RR)to value-added chemicals is an attractive strategy for greenhouse gas mitigation and carbon recycle.Carbon material is one of most promising electrocatalysts but its product selectivity is limited by few modulating approaches for active sites.Herein,the predominant pyridinic N-B sites(accounting for 80%to all N species)are fabricated in hierarchically porous structure of graphene nanoribbons/amorphous carbon.The graphene nanoribbons and porous structure can accelerate electron and ion/gas transport during CO_(2)RR,respectively.This carbon electrocatalyst exhibits excellent selectivity toward CO_(2)reduction to CH_(4)with the faradaic efficiency of 68%at−0.50 V vs.RHE.As demonstrated by density functional theory,a proper adsorbed energy of∗CO and∗CH_(2)O are generated on the pyridinic N-B site resulting into high CH_(4)selectivity.Therefore,this study provides a novel method to modulate active sites of carbon-based electrocatalyst to obtain high CH_(4)selectivity.Yuying Zhao Qixin Yuan Mengmeng Fan Ao Wang Kang Sun Zeming Wang Jianchun Jiang 2023Chinese Chemical Letters2023,34,8:1
19Ultra-high -speed combined machining of electrical dischargemachining and arc machining显示文摘WANG Fei’LIU Yonghong TANG Zeming 2013Proceedings of the Insti-tution of Mechanical Engineers Part B:Journal of Engi-neering Manufacture2013,228,5:1
20Boron Nanosheet-Supported Rh Catalysts for Hydrogen Evolution:A New Territory for the Strong Metal-Support Interaction Effect显示文摘High-efficiency electrochemical hydrogen evolution reaction(HER)offers a promising strategy to address energy and environmental crisis.Platinum is the most effective electrocatalyst for the HER.However,challenging scarcity,valuableness,and poor electrochemical stability still hinder its wide application.Here,we designed an outstanding HER electrocatalyst,highly dispersed rhodium(Rh)nanoparticles with an average diameter of only 3 nm supported on boron(B)nanosheets.The HER catalytic activity is even comparable to that of commercial platinum catalysts,with an overpotential of only 66 mV in 0.5 M H_(2)SO_(4) and 101 mV in 1 M KOH to reach the current density of 10 mA cm−2.Meanwhile,the catalyst exhibited impressive electrochemical durability during long-term electrochemical processes in acidic and alkaline media,even the simu-lated seawater environment.Theoretical calculations unraveled that the structure-activity relationship between B(104)crystal plane and Rh(111)crystal plane is beneficial to the release of hydrogen,and surface O plays a vital role in the catalysis process.Our work may gain insights into the development of supported metal catalysts with robust catalytic performance through precise engineering of the strong metal-supported interaction effect.Keng Chen Zeming Wang Liang Wang Xiuzhen Wu Bingjie Hu Zheng Liu Minghong Wu 2021Nano-Micro Letters2021,13,10:1
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