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| 1 | Targeted mutagenesis in rice using CRISPR-Cas system显示文摘 | Jin Miao Dongshu Guo Jinzhe Zhang Qingpei Huang Genji Qin Xin Zhang Jianmin Wan Hongya Gu Li-Jia Qu | 2013 | Cell Research2013,23,10: | 103 |
| 2 | Plant abiotic stress response and nutrient use efficiency显示文摘Abiotic stresses and soil nutrient limitations are major environmental conditions that reduce plant growth,productivity and quality.Plants have evolved mechanisms to perceive these environmental challenges,transmit the stress signals within cells as well as between cells and tissues,and make appropriate adjustments in their growth and development in order to survive and reproduce.In recent years,significant progress has been made on many fronts of the stress signaling research,particularly in understanding the downstream signaling events that culminate at the activation of stress-and nutrient limitation-responsive genes,cellular ion homeostasis,and growth adjustment.However,the revelation of the early events of stress signaling,particularly the identification of primary stress sensors,still lags behind.In this review,we summarize recent work on the genetic and molecular mechanisms of plant abiotic stress and nutrient limitation sensing and signaling and discuss new directions for future studies. | Zhizhong Gong Liming Xiong Huazhong Shi Shuhua Yang Luis R.Herrera-Estrella Guohua Xu Dai-Yin Chao Jingrui Li Peng-Yun Wang Feng Qin Jigang Li Yanglin Ding Yiting Shi Yu Wang Yongqing Yang Yan Guo Jian-Kang Zhu | 2020 | Science China(Life Sciences)2020,63,5: | 94 |
| 3 | Identification of a novel coronavirus causing severe pneumonia in human:a descriptive study显示文摘Background:Human infections with zoonotic coronaviruses(CoVs),including severe acute respiratory syndrome(SARS)-CoV and Middle East respiratory syndrome(MERS)-CoV,have raised great public health concern globally.Here,we report a novel batorigin CoV causing severe and fatal pneumonia in humans.Methods:We collected clinical data and bronchoalveolar lavage(BAL)specimens from five patients with severe pneumonia from Wuhan Jinyintan Hospital,Hubei province,China.Nucleic acids of the BAL were extracted and subjected to next-generation sequencing.Virus isolation was carried out,and maximum-likelihood phylogenetic trees were constructed.Results:Five patients hospitalized from December 18 to December 29,2019 presented with fever,cough,and dyspnea accompanied by complications of acute respiratory distress syndrome.Chest radiography revealed diffuse opacities and consolidation.One of these patients died.Sequence results revealed the presence of a previously unknownβ-CoV strain in all five patients,with 99.8%to 99.9%nucleotide identities among the isolates.These isolates showed 79.0%nucleotide identity with the sequence of SARS-CoV(GenBank NC_004718)and 51.8%identity with the sequence of MERS-CoV(GenBank NC_019843).The virus is phylogenetically closest to a bat SARS-like CoV(SL-ZC45,GenBank MG772933)with 87.6%to 87.7%nucleotide identity,but is in a separate clade.Moreover,these viruses have a single intact open reading frame gene 8,as a further indicator of bat-origin CoVs.However,the amino acid sequence of the tentative receptor-binding domain resembles that of SARS-CoV,indicating that these viruses might use the same receptor.Conclusion:A novel bat-borne CoV was identified that is associated with severe and fatal respiratory disease in humans. | Li-Li Ren Ye-Ming Wang Zhi-Qiang Wu Zi-Chun Xiang Li Guo Teng Xu Yong-Zhong Jiang Yan Xiong Yong-Jun Li Xing-Wang Li Hui Li Guo-Hui Fan Xiao-Ying Gu Yan Xiao Hong Gao Jiu-Yang Xu Fan Yang Xin-Ming Wang Chao Wu Lan Chen Yi-Wei Liu Bo Liu Jian Yang Xiao-Rui Wang Jie Dong Li Li Chao-Lin Huang Jian-Ping Zhao Yi Hu Zhen-Shun Cheng Un-Lin Liu Zhao-Hui Qian Chuan Qin Qi Jin Bin Cao Jian-Wei Wang | 2020 | Chinese Medical Journal2020,,9: | 99 |
| 4 | Efficient generation of hepatocyte-like cells from human induced pluripotent stem cells显示文摘人的导致的 pluripotent 茎(iPS ) 房间类似于胚胎的茎(ES ) 房间,和罐头强烈地增殖并且区分进许多房间类型。然而,人的 iPS 房间的肝的区别还没被报导了。在这份报告,人的 iPS 房间被导致由一个逐步的协议区分进肝的房间。肝房间标记的表达式和人的 iPS 的肝相关的函数导出房间的房间被监视并且与区分的人的 ES 房间和主要人的 hepatocytes 的相比。在白天 7 点的约 60% 区分的人的 iPS 房间表示了肝的标记 alpha fetoprotein 和白长袍的。在白天 21 点的区分的房间包括白朊 Asecretion,肝糖合成,脲生产和可诱导的细胞色素 P450 活动展出了肝房间功能。肝的标记的表示和 iPS 的肝相关的功能导出房间的肝的房间比得上人的 ES 导出房间的肝的房间的。这些结果证明人的 iPS 房间,类似于人的 ES 房间,能高效地被导致区分房间进象 hepatocyte 一样。 | Zhihua Song Jun Cai Yanxia Liu Dongxin Zhao Jun Yong Shuguang Duo Xijun Song Yushan Guo Yang Zhao Han Qin Xiaolei Yin Chen Wu Jie Che Shichun Lu Mingxiao Ding Hongkui Deng | 2009 | Cell Research2009,19,11: | 63 |
| 5 | Current status of severe fever with thrombocytopenia syndrome in China显示文摘Severe fever with thrombocytopenia syndrome(SFTS) is an emerging infectious disease caused by SFTS virus(SFTSV). SFTSV is associated with a high mortality rate and has been reported in China, South Korea and Japan. SFTSV undergoes rapid changes owing to evolution, gene mutations, and reassortment between different strains of SFTSV. In this review, we summarize the recent cases and general properties of SFTS, focusing on the epidemiology, genetic diversity,clinical features, and diagnostics of SFTSV in China. From 2010 to October 2016, SFTS cases were reported in 23 provinces of China, with increased numbers yearly. Infection and death cases are mainly found in central China, where the Haemaphysalis longicornis ticks are spread. The national average mortality rate of SFTS infection was 5.3%, with higher risk to elder people. The main epidemic period was from May to July, with a peak in May. Thus, SFTS reminds a significant public health problem, and development of prophylactic vaccines and effective antiviral drugs will be highly needed. | Jianbo Zhan Qin Wang Jing Cheng Bing Hu Jing Li Faxian Zhan Yi Song Deyin Guo | 2017 | Virologica Sinica2017,32,1: | 71 |
| 6 | Effects of AT1 receptor antagonist,Iosartan,on rat hepatic fibrosis induced by CCl_4显示文摘AIM To investigate effect of losartan,an AT1receptor antagonist,on hepatic fibrosis induced byCCl;and to determine whether or not AT1receptors are expressed on hepatic stellate cells,METHODS AND RESULTS Fifty male Sprague-Dawley rats,weighing(180±20)g,wererandomized into five groups(control group,modelgroup,and three losartan treated groups),inwhich all rats were given the subcutaneousinjection of 40% CCl4(every 3 days for 6 weeks)except for rats of control group.Rats of losartan-treated groups were treated with losartan(20 mg/kg,10 mg/kg,5 mg/kg,daily gavage),After 6weeks liver tissue and serum samples of all ratswere examined.Serum hyaluronic acid(HA),procollagen typeⅢ(PCⅢ)were detected byradioimmunoassays,van Giesion collagen stainingwas used to evaluate the extracellular matrix of ratswith liver fibrosis.The expression of AT1receptors,transforming growth factor-beta(TGF-β),and alpha-smooth muscle actin(a-SMA)inliver tissue were determined byimmunohistochemical techniques.Compared withmodel group,serum ALT and AST of losartan-treated groups were significantly reduced(t=4.20,P<0.01 and t=4.57,P<0.01).Serum HAand PCⅢalso had significant differences(t=3.53,P<0.01 and t=2.20,P<0.05).Thedegree of fibrosis was improved by losartan and correlated with the expressions of AT1 receptors,TGF-β,and α-SMA in liver tissue.CONCLUSION AT1 receptor antagonist,losartan,could limit the progression of the hepatic fibrosisinduced by CCl4.The mechanism may be related tothe decrease in the expression of AT1 receptorsand TGF-β,ameliorating the injury of hepatocytes;activation of local renin-angiotensin system mightrelate to hepatic fibrosis;and during progressionof fibrosis,activated hepatic stellate cells mightexpress AT1 receptors. | Hong Shan Wei Ding Guo Li Han Ming Lu Yu Tao Zhan Zhi Rong Wang Xin Huang Jing Zhang Ji Lin Cheng Qin Fang Xu Department of Gastroenterology,Xinhua Hospital,Shanghai Second Medical University,Shanghai 200092,China | 2000 | World Journal of Gastroenterology2000,6,4: | 42 |
| 7 | Linking atmospheric pollution to cryospheric change in the Third Pole region: current progress and future prospects显示文摘The Tibetan Plateau and its surroundings are known as the Third Pole(TP). This region is noted for its high rates of glacier melt and the associated hydrological shifts that affect water supplies in Asia. Atmospheric pollutants contribute to climatic and cryospheric changes through their effects on solar radiation and the albedos of snow and ice surfaces; moreover, the behavior and fates within the cryosphere and environmental impacts of environmental pollutants are topics of increasing concern. In this review, we introduce a coordinated monitoring and research framework and network to link atmospheric pollution and cryospheric changes(APCC) within the TP region. We then provide an up-to-date summary of progress and achievements related to the APCC research framework, including aspects of atmospheric pollution’s composition and concentration, spatial and temporal variations, trans-boundary transport pathways and mechanisms, and effects on the warming of atmosphere and changing in Indian monsoon, as well as melting of glacier and snow cover. We highlight that exogenous air pollutants can enter into the TP’s environments and cause great impacts on regional climatic and environmental changes. At last, we propose future research priorities and map out an extended program at the global scale. The ongoing monitoring activities and research facilitate comprehensive studies of atmosphere–cryosphere interactions, represent one of China’s key research expeditions to the TP and the polar regions and contribute to the global perspective of earth system science. | Shichang Kang Qianggong Zhang Yun Qian Zhenming Ji Chaoliu Li Zhiyuan Cong Yulan Zhang Junming Guo Wentao Du Jie Huang Qinglong You Arnico K.Panday Maheswar Rupakheti Deliang Chen Orjan Gustafsson Mark H.Thiemens Dahe Qin | 2019 | National Science Review2019,6,4: | 35 |
| 8 | Effect of hepatocyte apoptosis induced by TNF-α on acute severe hepatitis in mouse models显示文摘AIM To study the effect of hepatocyteapoptosis and necrosis induced by TNF-α on thepathogenesis of acute severe hepatitis(ASH).METHODS The model of ASH was prepared inD-galactosamine(GAIN)sensitized BALB/c miceby injection of either endotoxin(ET)or tumornecrosis factor-α(TNF-α).Morphologicalchanges of apoptotic hepatocytes were studiedby both light and electron microscope and in siteend labeling method(ISEL).Molecular biologicalchanges of DNA ladder were observed byelectrophoresis of extract from liver tissues.Biochemical changes were measured by alanineaminotransferase(ALT),asparticaminotransferase(AST)and TNF-α.The relationbetween apoptosis and necrosis was evaluatedsimultaneously.RESULTS The sequence of hepatocyteapoptosis,necrosis,and final death from ASHwas observed both in GAIN/ET and GAIN/TNF-agroup.Apoptosis was prominent at 3.5 h and 5 hafter injection of inducer,while necrosis becamedominant at 9 h after challenge.The appearanceof apoptosis was earlier in GAIN/TNF-α groupthan that in GAIN/ ET group.Pretreatment ofmice with antiTNF IgG1 may completely preventthe liver injury induced by GalN/ET.CONCLUSION TNF-α can cause liver damageby inducing hepatic apoptosis and necrosis inmice with endotoxemia. | Guo Qing Zang Xia Qiu Zhou Hong Yu Qing Xie Guo Ming Zhao Bin Wang Qing Guo Yue Qin Xiang Dan Liao Department of Infectious Diseases,Rujin Hospital,Shanghai Second Medical University,Shanghai 200025,China | 2000 | World Journal of Gastroenterology2000,6,5: | 30 |
| 9 | The regulatory role of AT 1 receptor on activated HSCs in hepat,c fibrogenesis,effects of RAS inhibitors on hepatic fibrosis induced by CCl_4显示文摘AIM To assess the effect of ACE inhibitor andAng Ⅱ type Ⅰ(AT1)receptor antagonist inpreventing hepatic fibrosis caused by CCl4administration in rats;to investigate whether ornot there are expression of AT 1 receptors onhepatic stellate cells;and to observe the effectof Ang Ⅱ on proliferation and ECM synthesis ofcultured HSCs.METHODS Studies were conducted in maleSprague-Dawley rats.Except for thehepatofibrotic model group and the controlgroup,in three treated groups,either enalapril(5 mg/kg),or Iosartan(10 mg/kg),or enalapril+Iosartan were given to the fibrotic rats bydaily gavage,and saline vehicle was given tomodel and normal control rats.After 6 weeks,liver fibrosis was assessed directly by hepaticmorphometric analysis,which has beenconsidered the gold standard for thequantification of fibrosis.The expressions of AT1 receptors and(α-mooth muscle actin,α-SMA)in liver tissue or isolated hepatic stellate cells(HSCs)were detected by immunohistochemicaltechniques.The effect of Ang Ⅱ on HSCproliferation was determined by MTT method.Effect of Ang Ⅱ on collagen synthesis of HSCswas determined by 3H-proline incorporation.RESULTS Contrasted to the fibrosis in rats ofthe model group,groups of rats treated with either enalapril or Iosartan,or a combination oftwo drugs showed a limited expansion of theinterstitium(4.23±3.70 vs 11.22±4.79,P<0.05),but no difference was observedamong three treated groups(5.38±3.43,4.96±2.96,4.23±2.70,P>0.05).Expression of AT 1receptors was found in fibrotic interstitium offibrotic rats,whereas in normal control rats theywere limited to vasculature only to a very slightdegree.AT 1 receptors were also expressed onactivated HSCs in the culture.At concentrationsfrom 10-9to 10-5mol/L,Ang Ⅱ stimulated HSCproliferation in culture in a dose-dependentmanner.Increasing Ang Ⅱ concentrationsproduced corresponding increases in 3H-prolineincorporation.Differences among groups were significant.CONCLUSION Angiotensin-converting enzyme inhibitors and AT I blocker may slow the progression of hepatic fibrosis; activated HSCs express AT 1 receptors, and Ang Ⅱ can stimulate the proliferation and collagen synthesis of HSCs in a dose-dependent manner; and activation of RAS may be related to hepatic fibrogenesis induced by CCI4. | Hong Shan Wei Han Ming Lu Ding Guo Li Yu Tao Zhan Zhi Rong Wang Xin Huang Ji Lin Cheng Qin Fang Xu Department of Gastroenterology,Xinhua Hospital,Shanghai Second Medical University,Shanghai 200092,China | 2000 | World Journal of Gastroenterology2000,6,6: | 27 |
| 10 | Human amnion epithelial cells can be induced to differentiate into functional insulin-producing cells显示文摘胰腺的小岛移植证明了长期的胰岛素独立可以在受不了糖尿病 mellitus 类型 1 的病人被完成。然而,小岛织物的有限可获得性意味着对葡萄糖应答的生产胰岛素的房间的新来源被要求。这里,我们显示出那人的羊膜上皮的房间(HAEC ) 能被导致在 vitro 区分进功能的生产胰岛素的房间。在区别的正式就职以后, HAEC 表示了多重胰腺的 β-cell 基因,包括胰岛素,胰十二指肠 homeobox-1,配对的盒子基因 6, NK2 抄写因素相关的地点 2,小岛 1, glucokinase,和葡萄糖 transporter-2,和以响应另外的细胞外的刺激的一种调整葡萄糖的方式的释放 C 肽。进导致 streptozotocin 的糖尿病的 C57 老鼠的导致的 HAEC 的移植颠倒了多糖症,恢复了身体重量,并且维持了为 30 d 的 euglycemia。这些调查结果显示 HAEC 可以是为在类型 1 糖尿病的房间代替治疗的新来源。 | Yanan Hou | 2008 | Acta Biochimica et Biophysica Sinica2008,40,9: | 25 |
| 11 | Unconjugated bilirubin alleviates experimental ulcerative colitis by regulating intestinal barrier function and immune inflammation显示文摘BACKGROUND Unconjugated bilirubin(UCB) is generally considered toxic but has gained recent prominence for its anti-inflammatory properties. However, the effects of it on the interaction between intestinal flora and organisms and how it influences immune responses remain unresolved.AIM To investigate the role of UCB in intestinal barrier function and immune inflammation in mice with dextran-sulfate-sodium-induced colitis.METHODS Acute colitis was induced by 3%(w/v) dextran sulfate sodium salt in drinking water for 6 d followed by untreated water for 2 d. Concurrently, mice with colitis were administered 0.2 mL UCB(400 μmol/L) by intra-gastric gavage for 7 d.Disease activity index(DAI) was monitored daily. Mice were sacrificed at the end of the experiment. The length of the colon and weight of the spleen were recorded. Serum level of D-lactate, intestinal digestive proteases activity, and changes to the gut flora were analyzed. In addition, colonic specimens were analyzed by histology and for expression of inflammatory markers and proteins.RESULTS Mice treated with UCB had significantly relieved severity of colitis, including lower DAI, longer colon length, and lower spleen weight(colon length: 4.92 ±0.09 cm vs 3.9 ± 0.15 cm; spleen weight: 0.33 ± 0.04 vs 0.74 ± 0.04, P < 0.001). UCB administration inactivated digestive proteases(chymotrypsin: 18.70 ± 0.69 U/g vs44.81 ± 8.60 U/g; trypsin: 1.52 ± 0.23 U/g vs 9.05 ± 1.77 U/g, P < 0.01), increased expression of tight junction(0.99 ± 0.05 vs 0.57 ± 0.03, P < 0.001), decreased serum level of D-lactate(31.76 ± 3.37 μmol/L vs 54.25 ± 1.45 μmol/L, P < 0.001), and lowered histopathological score(4 ± 0.57 vs 7 ± 0.57, P < 0.001) and activity of myeloperoxidase(46.79 ± 2.57 U/g vs 110.32 ± 19.19 U/g, P < 0.001). UCB also regulated the intestinal microbiota, inhibited expression of tumor necrosis factor(TNF) α and interleukin 1β(TNF-α: 52.61 ± 7.81 pg/mg vs 105.04 ± 11.92 pg/mg,interleukin 1β: 13.43 ± 1.68 vs 32.41 ± 4.62 pg/mg, P < 0.001), decreased expression of Toll-like receptor 4(0.61 ± 0.09 vs 1.07 ± 0.03, P < 0.001) and myeloid differentiation primary response gene 88(0.73 ± 0.08 vs 1.01 ± 0.07, P <0.05), and increased expression of TNF-receptor-associated factor 6(0.79 ± 0.02 vs0.43 ± 0.09 P < 0.05) and inhibitor of kappa B α(0.93 ± 0.07 vs 0.72 ± 0.07, P < 0.05)in the colon.CONCLUSION UCB can protect intestinal barrier function, regulate normal intestinal homeostasis, and suppress inflammation via the Toll-like receptor 4/nuclear factor-κB signaling pathway. | Jia-Dong Zheng Yan He Heng-Yuan Yu Yuan-Li Liu Yi-Xuan Ge Xue-Ting Li Xue Li Yan Wang Meng-Ru Guo Yi-Lin Qu Xiao-Fa Qin Ming-Shan Jiang Xiu-Hong Wang | 2019 | World Journal of Gastroenterology2019,25,15: | 26 |
| 12 | Root microbiota shift in rice correlates with resident time in the field and developmental stage显示文摘Land plants in natural soil form intimate relationships with the diverse root bacterial microbiota. A growing body of evidence shows that these microbes are important for plant growth and health. Root microbiota composition has been widely studied in several model plants and crops; however, little is known about how root microbiota vary throughout the plant's life cycle under field conditions. We performed longitudinal dense sampling in field trials to track the time-series shift of the root microbiota from two representative rice cultivars in two separate locations in China. We found that the rice root microbiota varied dramatically during the vegetative stages and stabilized from the beginning of the reproductive stage, after which the root microbiota underwent relatively minor changes until rice ripening. Notably, both rice genotype and geographical location influenced the patterns of root microbiota shift that occurred during plant growth. The relative abundance of Deltaproteobacteria in roots significantly increased overtime throughout the entire life cycle of rice, while that of Betaproteobacteria, Firmicutes, and Gammaproteobacteria decreased. By a machine learning approach, we identified biomarker taxa and established a model to correlate root microbiota with rice resident time in the field(e.g., Nitrospira accumulated from 5 weeks/tillering in field-grown rice). Our work provides insights into the process of rice root microbiota establishment. | Jingying Zhang Na Zhang Yong-Xin Liu Xiaoning Zhang Bin Hu Yuan Qin Haoran Xu Hui Wang Xiaoxuan Guo Jingmei Qian Wei Wang Pengfan Zhang Tao Jin Chengcai Chu Yang Bai | 2018 | Science China(Life Sciences)2018,61,6: | 24 |
| 13 | Distribution characteristic and geological signiflcance of rare earth elements in Lopingian mudstone of Permian,Panxian county,Guizhou province显示文摘In order to discuss the geochemical characteristic of REEs(rare earth elements) and their geological application,we measured the contents of rare earth elements,trace elements and minerals of 29 Lopingian(Late Permian) mudstone samples in Panxian county,carrying out ICP-MS and XRD analysis.The results show that the amount of REEs(185.56-729.46 10à6) is high.The ratios of w(LREE)/w(HREE)(6.84-13.86) and w(La)N/w(Yb)N(1.01-3.02) show clear differentiation of LREEs and HREEs.RREE has a significantly or critically positive correlation with lithophile elements Th,Nb,Ta,Ti,Ga,Sc,Cs,Zr,Hf,Sr,Be and chalcophile element Zn,a critically negative correlation with siderophile element Fe and a slightly positive correlation with illite,illite smectite mixed layers and siderite.REEs originate mainly from terrigenous minerals,in an inorganic phase.Source rocks of our samples consist of Emeishan basalt and a small part of sedimentary rocks,as suggested by the distribution patterns of REEs and w(PREE)-w(La)/w(Yb) diagram.Moreover,abnormal surfaces near the sequence boundaries(SB2,SB3,SB4) are related with the boundaries,identifled by geochemical characteristics of the REEs,such as PREE,w(LREE)/w(HREE),Eu/Eu and Ceanom. | Shao Yubao Guo Yinghai Qin Yong Shen Yulin Tian Li | 2011 | Mining Science and Technology2011,21,4: | 23 |
| 14 | 2016 Chinese expert consensus and guidelines for the diagnosis and treatment of papillary thyroid microcarcinoma显示文摘The incidence of papillary thyroid carcinoma(PTC)has exponentially increased in recent years.Papillary thyroid microcarcinoma(PTMC)accounts for the majority of the reported cases of PTC.The debates and crucial issues in PTMC management have received researchers'attention.To further improve the clinical management of PTMC in China, | Ming Gao Minghua Ge Qinghai Ji Ruochuan Cheng Hankui Lu Haixia Guan Li Gao Zhuming Guo Tao Huang Xiaoming Huang Xiaoming Li Yansong Lin Qinjiang Liu Xin Ni Yi Pan Jianwu Qin Zhongyan Shan Hui Sun Xudong Wang Zhengang Xu Yang Yu Daiwei Zhao Naisong Zhang ShengZhang Ying Zheng Jingqiang Zhu Dapeng Li Xiangqian Zheng 无 | 2017 | Cancer Biology & Medicine2017,14,3: | 23 |
| 15 | Relationship between tumor necrosis factor-α and liver fibrosis显示文摘RelationshipbetweentumornecrosisfactorαandliverfibrosisWANGXin,CHENYueXiang,XUCaiFu,ZHAOGuoNing,HUANGYuXinandWANGQinLiD... | WANG Xin, CHEN Yue Xiang, XU Cai Fu, ZHAO Guo Ning, HUANG Yu Xin and WANG Qin Li Department of Gastroenterology, Tangdu Hospital, The Fourth Military Medical University, Xi′an 710038, Shaanxi Province, China | 1998 | World Journal of Gastroenterology1998,4,1: | 21 |
| 16 | The p53-induced lincRNA-p21 derails somatic cell reprogramming by sustaining H3K9me3 and CpG methylation at pluripotency gene promoters显示文摘最近的研究在众多的生物过程增加了我们长 noncoding RNA (lncRNAs ) 的理解,但是很少在体的房间 reprogramming 检验了他们的角色。通过表示介绍并且功能的屏蔽,我们鉴别了大 intergenic noncoding RNA p21 (lincRNA-p21 ) 损害 reprogramming。尤其是, lincRNA-p21 被 p53 导致,但是不在 reprogramming 支持 apoptosis 或房间老朽。相反, lincRNA-p21 与 H3K9 methyltransferase SETDB1 和维护 DNA methyltransferase DNMT1 联系,它被 RNA 有约束力的蛋白质 HNRNPK 便于。因而, lincRNA-p21 由在 pluripotency 基因倡导者支撑 H3K9me3 或 CpG methylation 阻止 reprogramming。我们的结果在 reprogramming 提供卓见进 lncRNAs 的角色并且建立在 p53 和 heterochromatin 规定之间的一个新奇连接。 | Xichen Bao Haitao Wu Xihua Zhu Xiangpeng Guo Andrew P Hutchins Zhiwei Luo Hong Song Yongqiang Chen Keyu Lai Menghui Yin Lingxiao Xu Liang Zhou Jiekai Chen Dongye Wang Baoming Qin Jon Frampton Hung-Fat Tse Duanqing Pei Huating Wang Biliang Zhang Miguel A Esteban | 2015 | Cell Research2015,25,1: | 21 |
| 17 | circRNA_0046366 inhibits hepatocellular steatosis by normalization of PPAR signaling显示文摘AIM To investigate micro(mi)R-34 a-antagonizing circular(circ)RNA that underlies hepatocellular steatosis.METHODS The effect of circ RNA on mi R-34 a was recognized by the mi RNA response element(MRE), and validated by the dual-luciferase reporter assay. Its association with hepatocellular steatosis was investigated in Hep G2-based hepatocellular steatosis induced by free fatty acids(FFAs; 2:1 oleate:palmitate) stimulation. After normalization of the steatosis-related circRNA by expression vector, analysis of mi R-34 a activity,peroxisome proliferator-activated receptor(PPAR)α level, and expression of downstream genes were carried out so as to reveal its impact on the mi R-34 a/PPARα regulatory system. Both triglyceride(TG) assessment and cytopathological manifestations uncovered the role of circRNA in miR-34 a-dependent hepatosteatogenesis.RESULTS Bioinformatic and functional analysis verified circRNA_0046366 to antagonize the activity of mi R-34 a via MRE-based complementation. In contrast to its lowered level during FFA-induced hepatocellular steatosis, circ RNA_0046366 up-regulation abolished the mi R-34 a-dependent inhibition of PPARα that played a critical role in metabolic signaling pathways. PPARα restoration exerted transcriptional improvement to multiple genes responsible for lipid metabolism. TGspecific lipolytic genes [carnitine palmitoyltransferase 1 A(CPT1 A) and solute-carrier family 27 A(SLC27 A)] among these showed significant increase in their expression levels. The circ RNA_0046366-related rebalancing of lipid homeostasis led to dramatic reduction of TG content, and resulted in the ameliorated phenotype of hepatocellular steatosis.CONCLUSION Dysregulation of circ RNA_0046366/mi R-34 a/PPARα signaling may be a novel epigenetic mechanism underlying hepatocellular steatosis. circ RNA_0046366 serves as a potential target for the treatment of hepatic steatosis. | Xing-Ya Guo Fang Sun Jian-Neng Chen Yu-Qin Wang Qin Pan Jian-Gao Fan | 2018 | World Journal of Gastroenterology2018,24,3: | 21 |
| 18 | A practical guide to amplicon and metagenomic analysis of microbiome data显示文摘Advances in high-throughput sequencing(HTS)have fostered rapid developments in the field of microbiome research,and massive microbiome datasets are now being generated.However,the diversity of software tools and the complexity of analysis pipelines make it difficult to access this field.Here,we systematically summarize the advantages and limitations of microbiome methods.Then,we recommend specific pipelines for amplicon and metagenomic analyses,and describe commonly-used software and databases,to help researchers select the appropriate tools.Furthermore,we introduce statistical and visualization methods suitable for microbiome analysis,including alpha-and betadiversity,taxonomic composition,difference comparisons,correlation,networks,machine learning,evolution,source tracing,and common visualization styles to help researchers make informed choices.Finally,a stepby-step reproducible analysis guide is introduced.We hope this review will allow researchers to carry out data analysis more effectively and to quickly select the appropriate tools in order to efficiently mine the biological significance behind the data. | Yong-Xin Liu Yuan Qin Tong Chen Meiping Lu Xubo Qian Xiaoxuan Guo Yang Bai | 2021 | Protein & Cell2021,12,5: | 20 |
| 19 | A randomized comparative study of using enoxaparin instead of unfractionated heparin in the intervention treatment of coronary heart disease显示文摘Background Low molecular weight heparin (LMWH) was more effective than unfractionated heparin (UFH) in treating acute coronary syndrome (ACS). However, it remains uncertain whether LMWH can be used in patients undergoing percutaneous coronary intervention (PCI) instead of UFH. This study aimed to evaluate the efficacy and safety of using enoxaparin instead of UFH in the intervention treatment of patients with coronary heart disease (CHD) Methods From October 2003 to Febuary 2005, 966 patients with CHD were enrolled into this study. Among 966 patients, 455 patients received the PCI, including 283 patients with Non-ST segment elevation ACS (NSTEACS), 511 patients did not received PCI due to mild, moderate lesions or were suitable for coronary artery bypass graft (CABG). The 966 patients were randomized to enoxaparin group (484 patients) and UFH group (482 patients). Patients in the enoxaparin group were given enoxaparin at least twice subcutaneously (1 mg/kg,q12 h) before catheterization. Plasma anti-Xa activity was determined 1-8 hours after the last dose of enoxaparin was determined. The catheterization was performed within 8 hours after the last dose of enoxaparin. The sheath was removed immediately after the procedure. Patients in the UFH group were given UFH 25 mg intravenously before coronary angiography. Additional 65 mg was given intravenously if PCI was to be performed. The sheath was removed 4 hours after the procedure. Results A total of 227 patients in the enoxaparin group and 228 patients in the UFH group received PCI. In the enoxaparin group,one patient developed acute thrombosis during PCI and resulted in acute myocardial infarction (AMI), no acute or subacute thrombosis was found during hospitalization. In the UFH group, no acute or subacute thrombosis occurred during PCI procedure and hospitalization. Therefore, the incidence of major adverse cardiovascular events (MACEs) during the hospitalization was 0.44% in the enoxaparin group and 0 in the UFH group. In the enoxaparin group, the sheath was removed immediately after the procedure and 8 patients had hematoma on the puncture site. In the UFH group, the sheath was removed 4 hours after the procedure and 20 cases had hematoma on the puncture site. The incidence of hematoma on the puncture site was significantly higher in the UFH group than that in the enoxaparin group (P<0.05). Anti-Xa activity was determined in 174 patients in LMWH group. The mean anti-Xa activity was (0.87±0.23) U/ml, and 94.8% of them had anti-Xa activity >0.5 U/ml and 6.9% of the patient >1.2 U/ml. There was no death and AMI occurred in enoxaparin group, but one patient had AMI caused by subacute thrombosis in UFH group during 30-day follow-up. MACE rate at 30-day follow-up was 0 in enoxaparin group and 0.43% in UFH group. Conclusions The results of the study suggest that it is safe and efficient to give enoxaparin at least twice beforethe PCI procedure, and the sheath can be removed immediately after PCI. For NSTEACS patient who has received enoxaparin more than twice during the hospitalization can undergo PCI directly and no UFH is necessary before or during PCI. | CHEN Ji-lin CHEN Jue QIAO Shu-bin GUO Yuan-lin WU Yong-jian DAI Jun YUAN Jin-qing QIN Xue-wen YANG Yue-jin GAO Run-lin | 2006 | Chinese Medical Journal2006,,5: | 19 |
| 20 | Pressure fluctuation propagation of a pump turbine at pump mode under low head condition显示文摘Pressure fluctuation at the vaneless space and vanes passages is one of the most important problems for the stable operation of a pump turbine.The fluctuation appears in any operating condition.Much research has been done on the pressure fluctuation of hydraulic machinery.However,the details of pressure fluctuation propagation of the pump turbine at the pump mode have not been revealed.The modern pump turbine with high water head requires the runner to be'flat',which would induce pressure fluctuation more easily than the low head pump turbine.In this article,a high head pump turbine model is used as the research object.As the pressure fluctuation at off-design point is more serious than at the design point,the low head condition is chosen as the research condition.Pressure fluctuation at the vaneless space and vanes passages is predicted by the computational fluid dynamics method based on k-?shear stress transport model.The experiment conducted on the test rig of the Harbin Institute of Large Electrical Machinery is used to verify the simulation method.It proves that the numerical method is a feasible way to research the fluctuation under this operating condition.The pressure fluctuation along the passage direction is analyzed at time and frequency domains.It is affected mainly by the interaction between the runner and vanes.In the circumferential direction,the influence of the special stay vane on the pressure fluctuation is got.The amplitude in the high-pressure side passage of that vane is lower than that in the other side.The study provides a basic understanding of the pressure fluctuation of a pump turbine and could be used as a reference to improve the operation stability of it. | GUO Lei LIU JinTao WANG LeQin QIN DaQing WEI XianZhu | 2014 | Science China(Technological Sciences)2014,57,4: | 19 |