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56篇 您的检索式:作者名="Shiyi Li"
    题名 作者 年代 出处 被引量
1Nidus vespae protein inhibiting proliferation of HepG2 hepatoma cells through extracellular signal-regulated kinase signaling pathways and inducing G1 cell cycle arrest显示文摘蛋白质说出 NVP (1 ) 从巢 vespae 被孤立。T 他现在的学习的目的是阐明 NVP (1 ) 是否并且怎么调制 HepG2 房间的增长。在 6.6 μg/ml 的集中的 NVP (1 ) 能在阶段 G 1 逮捕房间周期并且禁止 cyclinB, cyclinD1 和 cyclinE 的 mRNA 表示。NVP (1 ) 压制了 cdk2 蛋白质表示,但是增加了 p27 和 p21 蛋白质表示。然而, NVP (1 ) 没改变 p16 蛋白质表示层次。NVP (1 ) 在由原子染色质冷凝作用显示了的 HepG2 房间支持了 apoptosis,并且另外,表明小径的细胞外的调整信号的 kinase (英皇家空军之阶级最低之兵) 被激活。而且,当 HepG2 房间是有英皇家空军之阶级最低之兵禁止者 PD98059 的 pretreated 时,津贴蛋白质表示水平被稀释。这些结果证明 NVP (1 ) 通过表明小径的英皇家空军之阶级最低之兵禁止 HepG2 的增长。NVP (1 ) 能是为肝癌症的潜在的药。Changdong Wang Peng Chen Hongjuan Jin Xu Yan Lu Gan Yi Li Shiyi Zhou Junli Chang Yuesheng Wang Guangxiao Yang Guangyuan He 2008Acta Biochimica et Biophysica Sinica2008,40,11:11
2Influences of double aerial CO_2 concentration on plant root surface area and viability and infection intensity of vesicular-arbuscular mycorrhizal fungi显示文摘Using recently developed methods for root research, an investigation initiated concerning effects of doubled atmospheric CO2 concentration on root surface area and infection of vesicular-arbuscular mycorrhizal (VAM) fungi in seedlings of maize, wheat and soybean. Results showed that doubled CO2 concentration significantly extended root system surface area and promoted VAM fungal infection intensity and viability. However, interspecific variation existed in these responses. It is suggested that plant community succession would be changed due to altered characteristics of roots among species in the future climate.WANG Xingfen, LI Shiyi, BAI Kezhi KUANG TingyunInstitute of Botany, Chinese Academy of Sciences, Beijing 100093, China Corresponding author 1999Chinese Science Bulletin1999,44,1:8
3Teracluster LSSC-II--Its designing principles and applications in large scale numerical simulations显示文摘The teracluster LSSC-II installed at the State Key Laboratory of Scientific and Engineering Computing, Chinese Academy of Sciences is one of the most powerful PC clusters in China. It has a peek performance of 2Tflops. With a Linpack performance of 1.04Tflops, it is ranked at the 43rd place in the 20th TOP500 List (November 2002), 51st place in the 21st TOP500 List (June 2003), and the 82nd place in the 22nd TOP500 List (November 2003) with a new Linpack performance of 1.3Tflops. In this paper, we present some design principles of this cluster, as well as its applications in some large-scale numerical simulations.ZHANG Linbo, CHEN Shiyi, LI Xinliang, CAO Jianwen, ZHANG Wensheng & GONG XingaoState Key Laboratory of Scientific and Engineering Computing, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China Department of Mechanical Engineering, The Johns Hopkins University and Center for Computational Science and Engineering, Peking University, Beijing 100875, China Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China Parallel Computing Laboratory, Institute of Software, Chinese Academy of Sciences, Beijing 100080, China Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433 Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China 2004Science China Mathematics2004,47,z1:8
4One Stone Four Birds:A Novel Liposomal Delivery System Multi-functionalized with Ginsenoside Rh2 for Tumor Targeting Therapy显示文摘Liposomes hold great potential in anti-cancer drug delivery and the targeting treatment of tumors.However,the clinical therapeutic efficacy of liposomes is still limited by the complexity of tumor microenvironment(TME)and the insufficient accumulation in tumor sites.Meanwhile,the application of cholesterol and polyethylene glycol(PEG),which are usually used to prolong the blood circulation and stabilize the structure of liposomes respectively,has been questioned due to various disadvantages.Herein,we developed a ginsenoside Rh2-based multifunctional liposome system(Rh2-lipo)to effectively address these challenges once for all.Different with the conventional’wooden’liposomes,Rh2-lipo is a much more brilliant carrier with multiple functions.In Rh2-lipo,both cholesterol and PEG were substituted by Rh2,which works as membrane stabilizer,long-circulating stealther,active targeting ligand,and chemotherapy adjuvant at the same time.Firstly,Rh2 could keep the stability of liposomes and avoid the shortcomings caused by cholesterol.Secondly,Rh2-lipo showed a specifically prolonged circulation behavior in the blood.Thirdly,the accumulation of the liposomes in the tumor was significantly enhanced by the interaction of glucose transporter of tumor cells with Rh2.Fourth,Rh2-lipo could remodel the structure and reverse the immunosuppressive environment in TME.When tested in a 4T1 breast carcinoma xenograft model,the paclitaxel-loaded Rh2-lipo realized high efficient tumor growth suppression.Therefore,Rh2-lipo not only innovatively challenges the position of cholesterol as a liposome component,but also provides another innovative potential system with multiple functions for anti-cancer drug delivery.Chao Hong Jianming Liang Jiaxuan Xia Ying Zhu Yizhen Guo Anni Wang Chunyi Lu Hongwei Ren Chen Chen Shiyi Li Dan Wang Huaxing Zhan Jianxin Wang 2020Nano-Micro Letters2020,12,10:8
5Dynamically controlling terahertz wavefronts with cascaded metasurfaces显示文摘Dynamically controlling terahertz(THz)wavefronts in a designable fashion is highly desired in practice.However,available methods working at microwave frequencies do not work well in the THz regime due to lacking suitable tunable elements with submicrometer sizes.Here,instead of locally controlling individual meta-atoms in a THz metasurface,we show that rotating different layers(each exhibiting a particular phase profile)in a cascaded metadevice at different speeds can dynamically change the effective Jonesmatrix property of the whole device,thus enabling extraordinary manipulations on the wavefront and polarization characteristics of a THz beam impinging on the device.After illustrating our strategy based on model calculations,we experimentally demonstrate two proof-of-concept metadevices,each consisting of two carefully designed all-silicon transmissive metasurfaces exhibiting different phase profiles.Rotating two metasurfaces inside the fabricated devices at different speeds,we experimentally demonstrate that the first metadevice can efficiently redirect a normally incident THz beam to scan over a wide solid-angle range,while the second one can dynamically manipulate both the wavefront and polarization of a THz beam.Our results pave the way to achieving dynamic control of THz beams,which is useful in many applications,such as THz radar,and bio-and chemical sensing and imaging.Xiaodong Cai Rong Tang Haoyang Zhou Qiushi Li Shaojie Ma Dongyi Wang Tong Liu Xiaohui Ling Wei Tan Qiong He Shiyi Xiao Lei Zhou 2021Advanced Photonics2021,3,3:8
6Lateral Hypothalamic Area Glutamatergic Neurons and Their Projections to the Lateral Habenula Modulate the Anesthetic Potency of Isoflurane in Mice显示文摘The lateral hypothalamic area(LHA)plays a pivotal role in regulating consciousness transition,in which orexinergic neurons,GABAergic neurons,and melanin-concentrating hormone neurons are involved.Glutamatergic neurons have a large population in the LHA,but their anesthesia-related effect has not been explored.Here,we found that genetic ablation of LHA glutamatergic neurons shortened the induction time and prolonged the recovery time of isoflurane anesthesia in mice.In contrast,chemogenetic activation of LHA glutamatergic neurons increased the time to anesthesia and decreased the time to recovery.Optogenetic activation of LHA glutamatergic neurons during the maintenance of anesthesia reduced the burst suppression pattern of the electroencephalogram(EEG)and shifted EEG features to an arousal pattern.Photostimulation of LHA glutamatergic projections to the lateral habenula(LHb)also facilitated the emergence from anesthesia and the transition of anesthesia depth to a lighter level.Collectively,LHA glutamatergic neurons and their projections to the LHb regulate anesthetic potency and EEG features.Shiyi Zhao Rui Li Huiming Li Sa Wang Xinxin Zhang Dan Wang Juan Guo Huihui Li Ao Li Tingting Tong Haixing Zhong Qianzi Yang Hailong Dong 2021Neuroscience Bulletin2021,37,7:5
7Spatial artificial neural network model for subgrid-scale stress and heat flux of compressible turbulence显示文摘The subgrid-scale(SGS)stress and SGS heat flux are modeled by using an artificial neural network(ANN)for large eddy simulation(LES)of compressible turbulence.The input features of ANN model are based on the first-order and second-order derivatives of filtered velocity and temperature at different spatial locations.The proposed spatial artificial neural network(SANN)model gives much larger correlation coefficients and much smaller relative errors than the gradient model in an a priori analysis.In an a posteriori analysis,the SANN model performs better than the dynamic mixed model(DMM)in the prediction of spectra and statistical properties of velocity and temperature,and the instantaneous flow structures.Chenyue Xie Jianchun Wang Hui Li Minping Wan Shiyi Chen 2020Theoretical & Applied Mechanics Letters2020,10,1:5
8Plant-derived exosome-like nanoparticles and their therapeutic activities显示文摘Nanotechnologies have been successfully applied to the treatment of various diseases.Plant-derived exosome-like nanoparticles (PENs) are expected to become effective therapeutic modalities for treating disease or in drug-delivery. PENs are minimally cytotoxic to healthy tissues, with which they show excellent biocompatibility, and are biased towards tumors by targeting specific tissues through special endocytosis mechanisms. Thus, the use of these PENs may expand the scope of drug therapies while reducing the off-target effects.In this review, we summarize the fundamental features and bioactivities of PENs extracted from the grape, grapefruit, ginger, lemon, and broccoli and discuss the applications of these particles as therapeutics and nanocarriers.Jisu Kim Shiyi Li Shuya Zhang Jianxin Wang 2022Asian Journal of Pharmaceutical Sciences2022,17,1:4
9Adipose-derived stem cells inhibit dermal fibroblast growth and induce apoptosis in keloids through the arachidonic acid-derived cyclooxygenase-2/prostaglandin E2 cascade by paracrine显示文摘Background:The clinical features of keloids consist of aberrant proliferation,secretion,differentiation and apoptosis of keloid dermis-derived fibroblasts(KFBs).Notably,the apoptosis rate of KFBs is lower than the proliferation rate.Though the anti-fibrotic effect of adipose-derived stem cells(ADSCs)on keloids has become a hot topic of research,the exact anti-fibrotic mechanism of the paracrine effect remains unclear.This study aimed to find out how the conditioned medium of ADSCs(ADSC-CM)exerts an anti-fibrotic effect in KFBs.Methods:KFBs and ADSCs were extracted and cultured.Then,ADSC-CM was prepared.Whether ADSC-CM could inhibit KFB growth and induce apoptosis was verified by the use of a cell counting kit-8,an 5-Ethynyl-2-deoxyuridine(Edu)kit and flow cytometry.The expressions of cyclooxygenase-1(COX-1),COX-2,caspase 3 and B-cell lymphoma-2(Bcl-2)in ADSC-CM-cultured KFBs were tested by real-time PCR and western blotting.To clarify the role of COX-2 in ADSC-CM-induced KFB apoptosis,a specific COX-2 inhibitor,celecoxib,was applied to KFBs cultured in ADSC-CM.Moreover,we tested the production of arachidonic acid(AA)and prostaglandin E2(PGE2)by ELISA.Then,we established a keloid transplantation model in a nude mouse to validate the therapeutic effect in vivo.Results:The proliferation ability of KFBs cultured in ADSC-CM was found to be weakened and apoptosis was significantly increased.Caspase 3 expression was significantly upregulated and Bcl-2 was downregulated in ADSC-CM-cultured KFBs.Furthermore,ADSC-CM strikingly elevated COX-2 mRNA and protein expressions,but COX-1 expression was unaltered.COX-2 inhibitors reduced ADSC-CM-induced apoptosis.Additionally,COX-2 inhibition blocked the elevation of caspase 3 and reversed the decrease in Bcl-2 expression.ADSC-CM increased PGE2 levels by 1.5-fold and this effect was restrained by COX-2 inhibition.In the nude mouse model,expressions of AA,COX-2 and PGE2 were higher in the translated keloid tissues after ADSC-CM injection than in the controls.Conclusions:We showed activation of the COX-2/PGE2 cascade in KFBs in response to ADSC-CM.By employing a specific COX-2 inhibitor,COX-2/PGE2 cascade activation played a crucial role in mediating the ADSC-CM-induced KFB apoptosis and anti-proliferation effects.Jinxiu Yang Shiyi Li Leren He Minliang Chen 2021Burns & Trauma2021,9,1:4
10Small changes in the length of diselenide bond-containing linkages exert great influences on the antitumor activity of docetaxel homodimeric prodrug nanoassemblies显示文摘Homodimeric prodrug-based self-assembled nanoparticles,with carrier-free structure and ultrahigh drug loading,is drawing more and more attentions.Homodimeric prodrugs are composed of two drug molecules and a pivotal linkage.The influence of the linkages on the self-assembly,in vivo fate and antitumor activity of homodimeric prodrugs is the focus of research.Herein,three docetaxel(DTX)homodimeric prodrugs are developed using different lengths of diselenide bond-containing linkages.Interestingly,compared with the other two linkages,the longest diselenide bond-containing linkage could facilitate the self-delivery of DTX prodrugs,thus improving the stability,circulation time and tumor targeting of prodrug nanoassemblies.Besides,the extension of linkages reduces the redox-triggered drug release and cytotoxicity of prodrug nanoassemblies in tumor cells.Although the longest diselenide bond-containing prodrug nanoassemblies possessed the lowest cytotoxicity to 4T1 cells,their stable nanostructure maintained intact during circulation and achieve the maximum accumulation of DTX in tumor cells,which finally“turned the table”.Our study illustrates the crucial role of linkages in homodimeric prodrugs,and gives valuable proposal for the development of advanced nano-DDS for cancer treatment.Lingxiao Li Shiyi Zuo Fudan Dong Tian Liu Yanlin Gao Yinxian Yang Xin Wang Jin Sun Bingjun Sun Zhonggui He 2021Asian Journal of Pharmaceutical Sciences2021,16,3:3
11Enhancement of oxygen reduction reaction activity by grain boundaries in platinum nanostructures显示文摘Systematic control of grain boundary densities in various platinum(Pt)nanostructures was achieved by specific peptide-assisted assembly and coagulation of nanocrystals.A positive quadratic correlation was observed between the oxygen reduction reaction(ORR)specific activities of the Pt nanostructures and the grain boundary densities on their surfaces.Compared to commercial Pt/C,the grain-boundary-rich strain-free Pt ultrathin nanoplates demonstrated a 15.5 times higher specific activity and a 13.7 times higher mass activity.Simulation studies suggested that the specific activity of ORR was proportional to the resident number and the resident time of oxygen on the catalyst surface,both of which correlate positively with grain boundary density,leading to improved ORR activities.Enbo Zhu Wang Xue Shiyi Wang Xucheng Yan Jingxuan Zhou Yang Liu Jin Cai Ershuai Liu Qingying Jia Xiangfeng Duan Yujing Li Hendrik Heinz Yu Huang 2020Nano Research2020,13,12:3
12Progress and prospects of carbon dioxide capture,EOR-utilization and storage industrialization显示文摘Carbon dioxide capture,EOR-utilization and storage(CCUS-EOR)are the most practical and feasible large-scale carbon reduction technologies,and also the key technologies to greatly improve the recovery of low-permeability oil fields.This paper sorts out the main course of CCUS-EOR technological development abroad and its industrialization progress.The progress of CCUS-EOR technological research and field tests in China are summarized,the development status,problems and challenges of the entire industry chain of CO_(2) capture,transportation,oil displacement,and storage are analyzed.The results show a huge potential of the large-scale application of CCUS-EOR in China in terms of carbon emission reduction and oil production increase.At present,CCUS-EOR in China is in a critical stage of development,from field pilot tests to industrialization.Aiming at the feature of continental sedimentary oil and gas reservoirs in China,and giving full play to the advantages of the abundant reserves for CO_(2) flooding,huge underground storage space,surface infrastructure,and wide distribution of wellbore injection channels,by cooperating with carbon emission enterprises,critical technological research and demonstration project construction should be accelerated,including the capture of low-concentration CO_(2) at low-cost and on large-scale,supercritical CO_(2) long-distance transportation,greatly enhancing oil recovery and storage rate,and CO_(2) large-scale and safe storage.CCUS-EOR theoretical and technical standard system should be constructed for the whole industrial chain to support and promote the industrial scale application,leading the rapid and profitable development of CCUS-EOR emerging industrial chain with innovation.YUAN Shiyi MA Desheng LI Junshi ZHOU Tiyao JI Zemin HAN Haishui 2022Petroleum Exploration and Development2022,49,4:2
13Glycogen synthase kinase-3: a key kinase in retinal neuron apoptosis in early diabetic retinopathy显示文摘Li Zhaohui Ma Ling Chen Xiaodong Li Yonghao Li Shiyi Zhang Jinglin Lu Lin 2014Chinese Medical Journal2014,,19:2
14Highly aligned lithiophilic electrospun nanofiber membrane for the multiscale suppression of Li dendrite growth显示文摘Using inorganic fibrous membranes as protective layers has yielded success in suppressing dendrite growth.However,conventional fibrous membranes usually have large voids and low affinity for Li,promoting inhomogeneous charge distribution and allowing some dendrites to grow.Herein,we introduce a highly aligned TiO_(2)/SiO_(2)(A-TS)electrospun nanofiber membrane as a protective layer for the Li metal anode.The A-TS membrane is fabricated by a custom-made electrospinning system with an automatic fiber alignment collector that allows control of the fibers’orientation.At the scale of the individual fibers,their high binding energies with Li can attract more“dead”Li by reacting with the SiO_(2) component of the composite,avoiding uncontrollable deposition on the metal anode.At the membrane scale,these highly ordered structures achieve homogeneous contact and charge distribution on the Li metal surface,leaving no vulnerable areas to nucleate dendrite formation.Additionally,the excellent mechanical and thermal stability properties of the A-TS membrane prevent any potential puncturing by dendrites or thermal runaway in a battery.Hence,an A-TS@Li anode exhibits stable cycling performance when used in both Li-S and Li-NCM811 batteries,highlighting significant reference values for the future design and development of high-energy-density metal-based battery systems.Jianan Wang Qianyue Ma Shiyi Sun Kai Yang Qiong Cai Emilia Olsson Xin Chen Ze Wang Amr MAbdelkader Yinshi Li Wei Yan Shujiang Ding Kai Xi 2022eScience2022,2,6:2
15Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice显示文摘General anesthesia severely affects the metabolites in the brain.Glycogen,principally stored in astrocytes and providing the short-term delivery of substrates to neurons,has been implicated as an affected molecule.However,whether glycogen plays a pivotal role in modulating anesthesia-arousal remains unclear.Here,we demonstrated that isoflurane-anesthetized mice exhibited dynamic changes in the glycogen levels in various brain regions.Glycogen synthase(GS)and glycogen phosphorylase(GP),key enzymes of glycogen metabolism,showed increased activity after isoflurane exposure.Upon blocking glycogenolysis with 1,4-dideoxy-1,4-imino-Darabinitol(DAB),a GP antagonist,we found a prolonged time of emergence from anesthesia and an enhancedδfrequency in the EEG(electroencephalogram).In addition,augmented expression of glycogenolysis genes in glycogen phosphorylase,brain(Pygb)knock-in(PygbH11/H11)mice resulted in delayed induction of anesthesia,a shortened emergence time,and a lower ratio of EEG-δ.Our findings revealed a role of brain glycogen in regulating anesthesiaarousal,providing a potential target for modulating anesthesia.Ze Fan Zhihao Zhang Shiyi Zhao Yuanyuan Zhu Dong Guo Bo Yang Lixia Zhuo Jiao Han Rui Wang Zongping Fang Hailong Dong Yan Li Lize Xiong 2020Neuroscience Bulletin2020,36,12:2
16The role of a drug-loaded poly(lactic co-glycolic acid)(PLGA) copolymer stent in the treatment of ovarian cancer显示文摘Objectives:Cisplatin(CDDP)is a widely used and effective basic chemotherapeutic drug for the treatment of a variety of tumors,including ovarian cancer.However,adverse side effects and acquired drug resistance are observed in the clinical application of CDDP.Identifying a mode of administration that can alleviate side effects and reduce drug resistance has become a promising strategy to solve this problem.Methods:In this study,3 D printing technology was used to prepare a CDDP-poly(lactic-co-glycolic acid)(CDDP-PLGA)polymer compound stent,and its physicochemical properties and cytotoxicity were evaluated both in vitro and in vivo.Results:The CDDP-PLGA stent had a significant effect on cell proliferation and apoptosis and clearly decreased the size of subcutaneous tumors in nude mice,whereas the systemic side effects were mild compared with those of intraperitoneal CDDP injection.Compared with the control group,CDDP-PLGA significantly increased the mRNA and protein levels of p-glycoprotein(P<0.01;P<0.01)and decreased vascular endothelial growth factor mRNA(P<0.05)and protein levels(P<0.01),however,CDDP-PLGA significantly decreased the mR NA and protein levels of p-glycoprotein(P<0.01;P<0.01)and vascular endothelial growth factor(P<0.01;P<0.01),which are associated with chemoresistance,in subcutaneous tumor tissue.Immunohistochemistry assay results revealed that,in the CDDP-PLGA group,the staining of the proliferation-related genes Ki67 and PCNA were lightly,and the apoptosis-related gene caspase-3 stained deeply.Conclusions:PLGA biomaterials loaded with CDDP,as compared with the same amount of free CDDP,showed good efficacy in terms of cytotoxicity,as evidenced by changes in apoptosis.Continuous local CDDP release can decrease the systemic side effects of this drug and the occurrence of drug resistance and angiogenesis,and improve the therapeutic effect.This new approach may be an effective strategy for the local treatment of epithelial ovarian cancer.Yanqing Wang Xiaoyin Qiao Xiao Yang Mengqin Yuan Shu Xian Li Zhang Dongyong Yang Shiyi Liu Fangfang Dai Zhikai Tan Yanxiang Cheng 2020Cancer Biology & Medicine2020,17,1:2
17In vitro study of dietary fiber in lowering postprandial serum glucose显示文摘OU Shiyi KWOK K C LI Yan 2001J Agric Food Chem2001,49,:1
18Research on direct calibration ofelectromagnetic flowmeter in partially filled pipes显示文摘YIN Shiyi LI Bin 2013AdvancedMaterials Research2013,712,3:1
19Hydroxyapatite/regenerated silk fibroin scaffold-enhanced osteoinductivity and osteoconductivity of bone marrow-derived mesenchymal stromal cells显示文摘Jia Jiang Wei Hao Yuzhuo Li Jinrong Yao Zhengzhong Shao Hong Li Jianjun Yang Shiyi Chen 2013Biotechnology Letters2013,,4:1
20TaASR1 , a transcription factor gene in wheat, confers drought stress tolerance in transgenic tobacco显示文摘WEI HU CHAO HUANG XIAOMIN DENG SHIYI ZHOU LIHONG CHEN YIN LI CHENG WANG ZHANBING MA QIANQIAN YUAN YAN WANG RUI CAI XIAOYU LIANG GUANGXIAO YANG GUANGYUAN HE 2013Plant Cell Environ2013,,8:1
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