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| 1 | Sodium oligomannate therapeutically remodels gut microbiota and suppresses gut bacterial amino acids-shaped neuroinflammation to inhibit Alzheimer's disease progression显示文摘Recently,increasing evidence has suggested the association between gut dysbiosis and Alzheimer's disease(AD)progression,yet the role of gut microbiota in AD pathogenesis remains obscure.Herein,we provide a potential mechanistic link between gut microbiota dysbiosis and neuroinflammation in AD progression.Using AD mouse models,we discovered that,during AD progression,the alteration of gut microbiota composition leads to the peripheral accumulation of phenylalanine and isoleucine,which stimulates the differentiation and proliferation of pro-inflammatory T helper 1(Thl)cells.The brain-infiltrated peripheral Th1 immune cells are associated with the Ml microglia aaivation,contributing to AD-associated neuroinflammation.Importantly,the elevation of phenylalanine and isoleucine concentrations and the increase of Th1 cell frequency in the blood were also observed in two small independent cohorts of patients with mild cognitive impairment(MCI)due to AD.Furthermore,GV-971,a sodium oligomannate that has demonstrated solid and consistent cognition improvement in a phase 3 clinical trial in China,suppresses gut dysbiosis and the associated phenylalanine/isoleucine accumulation,harnesses neuroinflammation and reverses the cognition impairment.Together,our findings highlight the role of gut dysbiosis-promoted neuroinflammation in AD progression and suggest a novel strategy for AD therapy by remodelling the gut microbiota. | Xinyi Wang Guangqiang Sun Teng Feng Jing Zhang Xun Huang Tao Wang Zuoquan Xie Xingkun Chu Jun Yang Huan Wang Shuaishuai Chang Yanxue Gong Lingfei Ruan Guanqun Zhang Siyuan Yan Wen Lian Chen Du Dabing Yang Qingli Zhang Feifei Lin Jia Liu Haiyan Zhang Changrong Ge Shifu Xiao Jian Ding Meiyu Geng | 2019 | Cell Research2019，29，10： | 192 |
| 2 | Inhibition of SARS-CoV-2 (previously 2019-nCoV) infection by a highly potent pan-coronavirus fusion inhibitor targeting its spike protein that harbors a high capacity to mediate membrane fusion显示文摘The recent outbreak of coronavirus disease(COVID-19)caused by SARS-CoV-2 infection in Wuhan,China has posed a serious threat to global public health.To develop specific anti-coronavirus therapeutics and prophylactics,the molecular mechanism that underlies viral infection must first be defined.Therefore,we herein established a SARS-CoV-2 spike(S)protein-mediated cell-cell fusion assay and found that SARS-CoV-2 showed a superior plasma membrane fusion capacity compared to that of SARS-CoV.We solved the X-ray crystal structure of six-helical bundle(6-HB)core of the HR1 and HR2 domains in the SARS-CoV-2 S protein S2 subunit revealing that several mutated amino acid residues in the HR1 domain may be associated with enhanced interactions with the HR2 domain.We previously developed a pan-coronavirus fusion inhibitor,EK1,which targeted the HR!domain and could inhibit infection by divergent human coronaviruses tested,including SARS-CoV and MERS-CoV.Here we generated a series of lipopeptides derived from EK1 and found that EK1C4 was the most potent fusion inhibitor against SARS-CoV-2 S protein-mediated membrane fusion and pseudovirus infection with IC50s of 1.3 and 15.8 nM,about 241-and 149-fold more potent than the original EK1 peptide,respectively.EK1C4 was also highly effective against membrane fusion and infection of other human coronavirus pseudoviruses tested,including SARS-CoV and MERS-CoV,as well as SARSr-CoVs,and potently inhibited the replication of 5 live human coronaviruses examined,including SARS-CoV-2.Intranasal application of EK1C4 before or after challenge with HCoV-OC43 protected mice from infection,suggesting that EK1C4 could be used for prevention and treatment of infection by the currently circulating SARS-CoV-2 and other emerging SARSr-CoVs. | Shuai Xia Meiqin Liu Chao Wang Wei Xu Qiaoshuai Lan Siliang Feng Feifei Qi Linlin Bao Lanying Du Shuwen Liu Chuan Qin Fei Sun Zhengli Shi Yun Zhu Shibo Jiang Lu Lu | 2020 | Cell Research2020，30，4： | 81 |
| 3 | Social network search based on semantic analysis and learning显示文摘 | Feifei Kou Junping Du Yijiang He Lingfei Ye | 2016 | CAAI Transactions on Intelligence Technology2016，1，4： | 11 |
| 4 | Arsenate biotransformation by Microcystis aeruginosa under different nitrogen and phosphorus levels显示文摘The arsenate(As(V)) biotransformation by Microcystis aeruginosa in a medium with different concentrations of nitrogen(N) and phosphorus(P) has been studied under laboratory conditions. When 15 μg/L As(V) was added, N and P in the medium showed effective regulation on arsenic(As) metabolism in M. aeruginosa, resulting in significant differences in the algal growth among different N and P treatments. Under 0.2 mg/L P treatment, increases in N concentration(4–20 mg/L) significantly stimulated the cell growth and therefore indirectly enhanced the production of dimethylarsinic acid(DMA), the main As metabolite, accounting for 71%–79% of the total As in the medium. Meanwhile, 10–20 mg/L N treatments accelerated the ability of As metabolization by M. aeruginosa, leading to higher contents of DMA per cell.However, As(V) uptake by M. aeruginosa was significantly impeded by 0.5–1.0 mg/L P treatment,resulting in smaller rates of As transformation in M. aeruginosa as well as lower contents of As metabolites in the medium. Our data demonstrated that As(V) transformation by M. aeruginosa was significantly accelerated by increasing N levels, while it was inhibited by increasing P levels. Overall, both P and N play key roles in As(V) biotransformation processes. | Feifei Che Miaomiao Du Changzhou Yan | 2018 | Journal of Environmental Sciences2018，30，4： | 7 |
| 5 | Mechanism underlying effect of Chaihu Shugan San(柴胡疏肝散)on major depressive disorder:a network pharmacology-based study显示文摘OBJECTIVE:To investigate the mechanism underpinning the effect of Chaihu Shugan San(柴胡疏肝散,CHSGS)on major depressive disorder(MDD).METHODS:We searched the compound components of from seven herbal ingredients of CHSGS from TCMSP,SymMap,ETCM,NPASS databases,and the chemical structure of the compound from PubChem,and collected the compound targets from TCMSP and TargetNet databases,and MDD-related targets from DiseaseGene Network.We established protein-protein interaction in the STRING database.Through gene mapping,topology analysis and enrichment analysis,the core targets and pathways of CHSGS for MDD,and the involved biological processes(BP),cell components(CC),and molecular functions(MF)were predicted.RESULTS:We collected a total of 1135 CHSGS compounds.After screening by ADME standards and the five rules of Ribinski,we obtained 99 different chemical components with different chemical structures,and related targets of 183 different CHSGS compounds.In the DiseaseGene Network,a total of 740 relevant targets for MDD were collected.Through gene mapping and topological analysis,62 related targets of CHSGS for MDD,24 targets with topological Chinese herbal medicine were obtained.Through enrichment analysis,10 relevant pathways and 3 core pathways were obtained with the involvement of 127 BP,27 CC,and 43 MF.CONCLUSION:There are multiple targets and signaling pathways are involved in the action of CHSGS in the treatment of MDD. | MU Jie ZHANG Shuang TANG Feifei LIU Shuling ZHANG Qianyi DU Qianlei WANG Xueqian WANG Qingguo CHENG Fafeng | 2021 | Journal of Traditional Chinese Medicine2021，41，2： | 4 |
| 6 | Growth of Anisotropic Platinum Nanostructures Catalyzed by Gold Seed Nanoparticles显示文摘This paper reports an effective method for the synthesis of platinum nanostructures with anisotropic morphologies by decomposition of platinum dichloride in oleylamine at intermediate temperatures catalyzed by gold seed nanoparticles.A small quantity of spherical gold nanoparticles formed in situ was used to trigger the nucleation and anisotropic growth of the Pt nanocrystals.By varying the amount of gold seed nanoparticles,porous fl ower-like,irregular polyhedron-shaped,multi-branched rod shaped,and caterpillar-like Pt nanostructures were produced in high yields at 190240°C in reaction times of a few minutes.Control of morphology under different conditions has been systematically studied and a kinetically controlled induced growth mechanism has been proposed. | Zheng Fang Yuliang Zhang Feifei Du Xinhua Zhong | 2008 | Nano Research2008，1，3： | 3 |
| 7 | Phylogenetic Analysis of the Dengue Virus Strains Causing the 2019 Dengue Fever Outbreak in Hainan,China显示文摘Dengue virus is an arthropod-borne pathogen that is transmitted to humans primarily by Aedes spp.mosquitos,causing the acute infectious disease,dengue fever(DF).Until 2019,no dengue outbreak had been reported in Hainan Province for over 20 years.However,in early September of 2019,an increasing number of infected cases appeared and the DF outbreak lasted for over one month in Haikou City,Hainan Province.In our study,we collected 97 plasma samples from DF patients at three hospitals,as well as 1585 mosquito larvae samples from puddles in different areas of Haikou.There were 49(50.5%)plasma samples found to be strongly positive and 9(9.3%)plasma samples were weakly positive against the NS1 antigen.We discovered DENV both in the patient's plasma samples and mosquito larvae samples,and isolated the virus from C6/36 cells inoculated with the acute phase serum of patients.Phylogenetic analysis revealed that the new strains were the most closely related to the epidemic strain in the southern regions of China,belonging to lineageⅣ,genotypeⅠ,DENV-1.Compared to the seven closest strains from neighboring countries and provinces,a total of 18 amino acid mutations occurred in the coding sequences(CDS)of the new isolated strain,DENV1 HMU-HKU-2.Our data shows that dengue virus is re-emerged in Hainan,and pose new threats for public health.Thus regular molecular epidemiological surveillance is necessary for control and prevention of DENV transmission. | Jiang Du Liyuan Zhang Xiaoyuan Hu Ruoyan Peng Gaoyu Wang Yi Huang Wenqi Wang Kunliang Wu Qiang Wang Haoxiang Su Fan Yang Yun Zhang Chuanning Tang Xiuji Cui Lina Niu Gang Lu Meifang Xiao Yongguo Du Feifei Yin | 2021 | Virologica Sinica2021，36，4： | 2 |
| 8 | Tumor necrosis factor a accelerates Hep-2 cells proliferation by suppressing TRPP2 expression显示文摘TRPP2, a Ca^(2+)-permeable non-selective cation channel, has been shown to negatively regulate cell cycle, but the mechanism underlying this regulation is unknown. Tumor necrosis factor a(TNF-α) is a proinflammatory cytokine extensively involved in immune system regulation, cell proliferation and cell survival. However, the effects and mechanisms for the role of TNF-αin laryngeal cancer remain unclear. Here, we demonstrated using western blot analyses and intracellular Ca^(2+) concentration measurements that TNF-α treatment suppressed both TRPP2 expression and ATP-induced Ca^(2+) release in a laryngeal cancer cell line(Hep-2). Knockdown of TRPP2 by a specific siRNA significantly decreased ATP-induced Ca^(2+) release and abolished the effect of TNF-α on the ATP-induced Ca^(2+) release. TNF-α treatment also enhanced Hep-2 cell proliferation and growth, as determined using cell counting and flow cytometry cell cycle assays. Moreover, TNF-α treatment down-regulated phosphorylated protein kinase R-like endoplasmic reticulum kinase(p-PERK) and phosphorylated eukaryotic translation initiation factor(p-eIF2α)expression levels, without affecting PERK and eIF2 a expression levels in Hep-2 cells. We concluded that suppressing TRPP2 expression and TRPP2-mediated Ca^(2+) signaling may be one mechanism underlying TNF-α-enhanced Hep-2 cell proliferation.These results offer new insights into the mechanisms of TNF-α-mediated laryngeal cancer cell proliferation, and provide evidences showing a potential role of TNF-α in the development of laryngeal cancer. | Jing Wu Jizheng Guo Yunyun Yang Feifei Jiang Shuo Chen Kaile Wu Bing Shen Yehai Liu Juan Du | 2017 | Science China(Life Sciences)2017，60，11： | 2 |
| 9 | Oxidized mitochondrial DNA sensing by STING signaling promotes the antitumor effect of an irradiated immunogenic cancer cell vaccine显示文摘Exposure to ionizing radiation,a physical treatment that inactivates live tumor cells,has been extensively applied to enhance the antitumor responses induced by cancer cell vaccines in both animal research and human clinical trials.However,the mechanisms by which irradiated cells function as immunogenic tumor vaccines and induce effective antitumor responses have not been fully explored.Here,we demonstrate that oxidized mitochondrial DNA(mtDNA)and stimulator of interferon genes(STING)signaling play a key roles in the enhanced antitumor effect achieved with an irradiated tumor cell vaccine.Elevations in ROS and oxidized mtDNA 8-OHG content could be induced in irradiated tumor cells.Oxidized mtDNA derived from irradiated tumor cells gained access to the cytosol of dendritic cells(DCs).Oxidized mtDNA,as a DAMP or adjuvant,activated the STING-TBK1-IRF3-IFN-β pathway in DCs,which subsequently cross-presented irradiated tumor cell-derived antigens to CD8^(+)T cells and elicited antitumor immunity.The results of our study provide insight into the mechanism by which an irradiated cell vaccine mediates antitumor immunity,which may have implications for new strategies to improve the efficacy of irradiated vaccines. | Chunju Fang Fei Mo Li Liu Jing Du Min Luo Ke Men Feifei Na Wei Wang Hanshuo Yang Xiawei Wei | 2021 | Cellular & Molecular Immunology2021，18，9： | 2 |
| 10 | Pulse-width-induced polarization enhancement of optically pumped N-V electron spin in diamond显示文摘The nitrogen-vacancy(N-V)center in diamond is a widely used platform for quantum information processing and sensing.The electron-spin state of the N-V center could be initialized,read out optically,and manipulated by resonate microwave fields.In this work,we analyze the dependence of electron-spin initialization on widths of laser pulses.We build a numerical model to simulate this process and to verify the simulation results in experiments.Both simulations and experiments reveal that shorter laser pulses are helpful to the electron-spin polarization.We therefore propose to use extremely short laser pulses for electron-spin initialization.In this new scheme,the spin-state contrast could be improved about 10%in experiments by using laser pulses as short as 4 ns in width.Furthermore,we provide a mechanism to explain this effect,which is due to the occupation time in the meta-stable spin-singlet states of the N-V center.Our new scheme is applicable in a broad range of N-V-based applications in the future. | YUMENG SONG YU TIAN ZHIYI HU FEIFEI ZHOU TENGTENG XING DAWEI LU BING CHEN YA WANG NANYANG XU JIANGFENG DU | 2020 | Photonics Research2020，8，8： | 1 |
| 11 | Creation of fragrant sorghum by CRISPR/Cas9显示文摘Sorghum,the fifth largest cereal crop,has high value as a staple food and raw material for liquor and vinegar brewing.Due to its high biomass and quality,it is also used as the second most planted silage resource.No fragrant sorghums are currently on the market.Through CRISPR/Cas9-mediated knockout of Sb BADH2,we obtained sorghum lines with extraordinary aromatic smell in both seeds and leaves.Animal feeding experiments showed that fragrant sorghum leaves were attractable.We believe this advantage will produce great value in the sorghum market for both grain and whole biomass forage. | Dan Zhang Sanyuan Tang Peng Xie Dekai Yang Yaorong Wu Shujing Cheng Kai Du Peiyong Xin Jinfang Chu Feifei Yu Qi Xie | 2022 | Journal of Integrative Plant Biology2022，64，5： | 1 |
| 12 | Metal-Organic Framework-Based Sulfur-Loaded Materials显示文摘Lithium-sulfur batteries(LSBs)are considered promising new energy storage systems given their outstanding theoretical energy densities.Nevertheless,issues such as low electrical conductivity and severe volume expansion,along with the formation of polysulfides during cycling,restrict their practical applications.To overcome these issues,it is necessary to find suitable and effective sulfur host materials.Metal-organic frameworks(MOFs),which are porous crystalline materials in the bourgeoning developmental stages,have demonstrated enormous potential in LSBs owing to their high porosity and tunable porous structure.Herein,we provide a comprehensive overview of MOF-based sulfur-loaded materials and discuss the charge/discharge mechanisms,strategies of enhancing battery performance,sulfur loading methods,and applications in LSBs.An outlook on future directions,prospects,and possible obstacles for the development of these materials is also provided. | Meng Du Qing Li Guangxun Zhang Feifei Wang Huan Pang | 2022 | Energy & Environmental Materials2022，5，1： | 1 |
| 13 | DNA Barcoding Assessment of Green Macroalgae in Coastal Zone Around Qingdao, China显示文摘An assessment with assistance of DNA barcoding was conducted on green macroalgae in coastal zone around Qingdao, China, during the period of April- December, 2011. Three markers were applied in molecular discrimination, including the plastid elongation factor tufA gene, the internal transcribed spacer(ITS) region of the ribosomal cistron and rubisco large subunit gene 3' regions(rbcL-3P). DNA barcoding discriminated 8 species, excluding species of genus Cladophora and Bryopsis due to failures in amplification. We ascertained and corrected 4 species identified by morphological methods for effectively assisting the classification. The gene tufA presented more advantages as an appropriate DNA marker with the strongest amplification success rate and species discrimination power than the other two genes. The poorest sequencing success largely handicapped the application of ITS. Samples identified by tufA and rbcL as Ulva flexuosa were clustered into the clade of U. prolifera by ITS in the neighbor-joining tree. Confusion with discrimination of the complex of U. linza, U. procera and U. prolifera(as the LPP complex) still existed for the three DNA markers. Based on our results, rbcL is recommended as a preferred marker for assisting tufA to discriminate green macroalgae. In distinguishing green-tide-forming Ulva species, the free-floating sample collected from the green tide in 2011 was proved to be identical with U. prolifera in Yellow Sea for ITS and rbcL genes. This study presents a preliminary survey of green macroalgae distributed in the coastal area around Qingdao, and proves that DNA barcoding is a powerful tool for taxonomy of green macroalgae. | DU Guoying WU Feifei MAO Yunxiang GUO Shenghua XUE Hongfan BI Guiqi | 2014 | Journal of Ocean University of China2014，13，1： | 1 |
| 14 | Concurrent highly pathogenic porcine reproductive and respiratory syndrome virus infection accelerates Haemophilus parasuis infection in conventional pigs显示文摘 | Jiang Yu Jiaqiang Wu Yuyu Zhang Lihui Guo Xiaoyan Cong Yijun Du Jun Li Wenbo Sun Jianli Shi Jun Peng Feifei Yin Dapeng Wang Pengwei Zhao Jinbao Wang | 2012 | Veterinary Microbiology (-)2012，，3： | 1 |
| 15 | Analysis of Engine Camshaft BearingLoosening Fault Based-on Model Simulation and VibrationSignal 显示文摘 | Du Canyi Yu Feifei | 2013 | Advanced Materials Research2013，，694697： | 1 |
| 16 | Pulse gradient, large-volume injection, high-throughput ultra-performance liquid chromatographic/tandem mass spectrometry bioanalysis for measurement of plasma amrubicin and its metabolite amrubicinol显示文摘 | Yingfei Li Yan Sun Feifei Du Kaihong Yuan Chuan Li | 2008 | Journal of Chromatography A2008，，1： | 1 |
| 17 | Simultaneous Quantification of Multiple Licorice Flavonoids in Rat Plasma显示文摘 | Li Li Shipiao Liang Feifei Du Chuan Li | 2007 | Journal of the American Society for Mass Spectrometry2007，，4： | 1 |
| 18 | A stochastic reconstruction strategy based on a stratified library of structural descriptors and its application in the molecular reconstruction of naphtha显示文摘Molecular reconstruction is a rapid and reliable way to provide molecular detail of petroleum fractions,which is required in the kinetic modeling of petroleum conversation processes at the molecular level.In the typical stochastic reconstruction method,the estimation of properties of pseudo molecules that are generated by Monte Carlo sampling depends on the building of predefined molecular libraries,which is expensive and inaccessible for certain petroleum fractions.In this paper,a novel stochastic reconstruction strategy is proposed,which is based on a stratified library of structural descriptors.Properties of pseudo molecules generated in the novel strategy can be directly estimated by group contribution method in the condition of lacking predefined molecular libraries.In this strategy,the molecular building diagram comprises two steps.First,the ring structure is configured by determining the number of rings.Different from the length of chain adopted in the traditional stochastic reconstruction method,in the second step,number of structural descriptors(SDs)for binding site and chain were determined sequentially for the configuration of binding site and saturated acyclic hydrocarbon chain.These structural descriptors for binding site and chain were selected from group contribution methods.To count the number of partial overlapping sections between structural descriptors for chain,two supplementary structural descriptors were created.All possible saturated structures of hydrocarbon chains can be represented by structural descriptors at the scale of property estimation.This strategy separates the building of a predefined molecule library from the stochastic reconstruction process.The exact structures of pseudo molecules represented by structural descriptors in this work can be determined with sufficient chemical knowledge.Fifty naphtha samples are tested independently to demonstrate the performance of the proposed strategy and the results show that the estimated properties were close enough to the experimental values.This strategy will benefit the molecular management of petrochemical industries and therefore improve economic and environmental efficiencies. | Guangyao Zhao Minglei Yang Wenli Du Feifei Shen Feng Qian | 2022 | Chinese Journal of Chemical Engineering2022，，11： | 1 |
| 19 | Differential transcriptomic landscapes of multiple organs from SARS-CoV-2 early infected rhesus macaques显示文摘SARS-CoV-2 infection causes complicated clinical manifestations with variable multi-organ injuries,how-ever,the underlying mechanism,in particular immune responses in different organs,remains elusive.In this study,comprehensive transcriptomic alterations of 14 tissues from rhesus macaque infected with SARS-CoV-2 were analyzed.Compared to normal controls,SARS-CoV-2 infection resulted in dysregulation of genes involving diverse functions in various examined tissues/organs,with drastic transcriptomic changes in cerebral cortex and right ventricle.Intriguingly,cerebral cortex exhibited a hyperinflammatory state evidenced by sig-nificant upregulation of inflammation response-related genes.Meanwhile,expressions of coagulation,angio-genesis and fibrosis factors were also up-regulated in cerebral cortex.Based on our findings,neuropilin 1(NRP1),a receptor of SARS-CoV-2,was significantly elevated in cerebral cortex post infection,accompanied by active immune response releasing inflammatory factors and signal transmission among tissues,which enhanced infection of the central nervous system(CNS)in a positive feedback way,leading to viral encephalitis.Overall,our study depicts a multi-tissue/organ tran-scriptomic landscapes of rhesus macaque with early infection of SARS-CoV-2,and provides important insights into the mechanistic basis for COVID-19-asso-ciated clinical complications. | Chun-Chun Gao Man Li Wei Deng Chun-Hui Ma Yu-Sheng Chen Yong-Qiao Sun Tingfu Du Qian-Lan Liu Wen-Jie Li Bing Zhang Lihong Sun Si-Meng Liu Fengli Li Feifei Qi Yajin Qu Xinyang Ge Jiangning Liu Peng Wang Yamei Niu Zhiyong Liang Yong-Liang Zhao Bo Huang Xiao-Zhong Peng Ying Yang Chuan Qin Wei-Min Tong Yun-Gui Yang | 2022 | Protein & Cell2022，13，12： | 1 |
| 20 | Analysis of Engine Camshaft Bearing Loosening Fauh Based-on Model Simulation and Vibration Signal 显示文摘 | Du Canyi Yu Feifei | 2013 | Advanced Materials Research2013，，694697： | 1 |
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