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11篇 您的检索式:作者名="Pingfei"
    题名 作者 年代 出处 被引量
1Double-layered osmotic pump controlled release tablets of actarit: In vitro and in vivo evaluation显示文摘The aim of the study was to develop actarit double-layered osmotic pump tablets to overcome the weak points of actarit common tablets, such as short half-life and large plasma concentration fluctuations. Single factor experiment and orthogonal test were applied to optimize the formulation;the pharmacokinetic study was performed in beagle dogs adopting actarit common tablets as reference tablets. The optimal formulation was as follows: drug layer: 150 mg actarit, 240 mg PEO-N80, 50 mg NaCl;push layer: 140 mg PEO-WSR303, 20 mg NaCl;coating solution: 30 g cellulose acetate and 6 g PEG 4000 in 1000 ml 94% acetone solution, 60 mg coating weight gain. The pharmacokinetic study showed that T max was prolonged by the contrast of commercial common tablets with constant drug release rate, but the bioavailability was equivalent. And a good in vivo –in vitro correlation of the actarit osmotic pump tablets was also established. The designed actarit osmotic pump tablets can be applied for rheumatoid arthritis, proposing a promising replacement for the marked common products.Yuenan Li Hao Pan Hongliang Duan Jianting Chen Zhihong Zhu Jingxin Fan Pingfei Li Xinggang Yang Weisan Pan 2019Asian Journal of Pharmaceutical Sciences2019,14,3:6
2The analysis of deregulated expression and methylation of the PER2 genes in gliomas显示文摘Wang Fan Xiaowei Chen Caiyan Li Yongluo Lvan Chen Pingfei Liu Zhijun Chen 2014Journal of Cancer Research and Therapeutics2014,,3:1
3Optimized big data K-means clustering using MapReduce显示文摘Cui Xiaoli Zhu Pingfei Yang Xin 2014The Journal of Supercomputing2014,70,3:1
4SIRCM1,which encodes tomato Lutescent1,is required for chlorophyll synthesis and chloroplast development in fruits显示文摘In plants,chloroplasts are the sites at which photosynthesis occurs,and an increased abundance of chloroplasts increases the nutritional quality of plants and the resultant color of fruits.However,the molecular mechanisms underlying chlorophyll synthesis and chloroplast development in tomato fruits remain unknown.In this study,we isolated a chlorophyll-de fi cient mutant,reduced chlorophyll mutant 1(rcml),by ethylmethanesulfonate mutagenesis;this mutant produced yellowish fruits with altered chloroplast development.MutMap revealed that Solyc08g005010 is the causal gene underlying the rcm1 mutant phenotype.A single-nucleotide base substitution in the second exon of SIRCM1 results in premature termination of its translated protein.SIRCM1 encodes a chloroplast-targeted metalloendopeptidase that is orthologous to the BCM1 protein of Arabidopsis and the stay-green G protein of soybean(Glycine max L.Merr.).Notably,the yellowish phenotype of the lutescent1 mutant can be restored with the allele of SlRCM1 from wild-type tomato.In contrast,knockout of SlRCM1 by the CRISPR/Cas9 system in Alisa Craig yielded yellowish fruits at the mature green stage,as was the case for lutescent1.Amino acid sequence alignment and functional complementation assays showed that SlRCM1 is indeed Lutescent1.These fi ndings provide new insights into the regulation of chloroplast development in tomato fruits.Genzhong Liu Huiyang Yu Lei Yuan Changxing Li Jie Ye Weifang Chen Ying Wang Pingfei Ge Junhong Zhang Zhibiao Ye Yuyang Zhang 2021Horticulture Research2021,8,1:1
5Selective Reduction of Nitroarenes with Molybdenum Disulfide显示文摘商业 MoS2 被发现是为到有在温和条件下面的肼的相应苯胺的硝基苯的减小的高度选择的催化剂。MoS2 比为到相应苯胺的功能的硝基苯的减小的高贵金属催化剂便宜得多不仅,而且更选择。有卤化物的硝基苯(F, Cl, Br 并且我) 有选择地被减少,并且相应苯胺在优秀收益被获得,并且没有 dehalogenation 被检测。功能的组象 NH2 那样,哦,链烯组在 nitro 混合物的减小期间被容忍。p-chloronitrobenzene 的减小与肼分别地在 MoS2 和 Pd/C 上被学习。p-chloroaniline 的收益与在完整的变换的 Pd/C 比那与 MoS2 是高得多的。Lei Huang Pingfei Luo Man Xiong Rizhi Chen Yong Wang Weihong Xing Jun Huang 2013Chinese Journal of Chemistry2013,31,8:1
6Engineering of N-glycosylation of hepatitis C virus envelope protein E2 enhances T cell responses for DNA immunization显示文摘Li Pingfei Wan Qi Feng Yong 2007Vaccine2007,25,8:1
7ATP6V0d2 mediates leucine-induced mTORCI activation and polarization of macrophages显示文摘Dear Editor, mTORCI, as a center regulatory hub of metabolism, senses the cellular energy status, nutrition and extracellular stimuli and regulates cell growth, differentiation and functions of immune cells (Powell et al., 2012). Lysosomal localization of key signal comp orients is critical for mTORCI activati on: mTORCI activation requires co-localization of activated Rheb and mTORCI to the lysosome membrane (Buerger et al., 2006). Signals in eluding growth factors, cellular stresses and energy levels act on the disruption the formation of tuberous sclerosis complex (TSC) complex, comprised of TSC1, TSC2 and TBC1D7, which leads to the translocation and activation of Rheb on the lysosome membrane (Dibble et al., 2012). In response to nutrient levels, specifically the availability of amino acids and glucose (Efeyan et al., 2013), mTORCI is recruited to the lysosomal surface by Rag GTPases that are heterodimers of RagA or RagC bound to RagB or RagD. Multiple protein complexes have been implicated in regulation of mTORCI upon nutrient sensing including Ragulator, GATOR1, GATOR2, KICSTOR and vacuolar ATPases (Wolfson et al., 2017). Vacuolar ATPases are large multiple-protein complexes that acidify the lysosome and may mediate additional functions independent of their proton pump activity (Nishi and Forgac, 2002).Pingfei Li Xiaofei Deng Jing Luo Yufei Chen Guoyu Bi Feili Gong Zhengping Wei Na Liu Huabin Li Arian Laurence Xiang-Ping Yang 2019Protein & Cell2019,10,8:1
8Heat-inducible SlWRKY3 confers thermotolerance by activating the SlGRXS1 gene cluster in tomato显示文摘High temperature stress is one of the major environmental factors that affect the growth and development of plants. Although WRKY transcription factors play a critical role in stress responses, there are few studies on the regulation of heat stress by WRKY transcription factors,especially in tomato. Here, we identified a group I WRKY transcription factor, SlWRKY3, involved in thermotolerance in tomato. First, SlWRKY3 was induced and upregulated under heat stress. Accordingly, overexpression of SlWRKY3 led to an increase, whereas knock-out of SlWRKY3 resulted in decreased tolerance to heat stress. Overexpression of SlWRKY3 accumulated less reactive oxygen species(ROS), whereas knock-out of SlWRKY3 accumulated more ROS under heat stress. This indicated that SlWRKY3 positively regulates heat stress in tomato. In addition,SlWRKY3 activated the expression of a range of abiotic stress-responsive genes involved in ROS scavenging, such as a SlGRXS1 gene cluster.Further analysis showed that SlWRKY3 can bind to the promoters of the SlGRXS1 gene cluster and activate their expression. Collectively, these results imply that SlWRKY3 is a positive regulator of thermotolerance through direct binding to the promoters of the SlGRXS1 gene cluster and activating their expression and ROS scavenging.Ying Wang Wenxian Gai Liangdan Yuan Lele Shang Fangman Li Zhao Gong Pingfei Ge Yaru Wang Jinbao Tao Xingyu Zhang Haiqiang Dong Yuyang Zhang 2024Horticultural Plant Journal2024,10,2:0
9Multiple-model GWAS identifies optimal allelic combinations of quantitative trait loci for malic acid in tomato显示文摘Malic acid(MA)is an important flavor acid in fruits and acts as a mediator in a series of metabolic pathways.It is important to understand the factors affecting MA metabolism for fruit flavor improvement and to understand MA-mediated biological processes.However,themetabolic accumulation of MA is controlled by complex heredity and environmental factors,making it difficult to predict and regulate the metabolism of MA.In this study,we carried out a genome-wide association study(GWAS)on MA using eight milestone models with two-environment repeats.A series of associated SNP variations were identified from the GWAS,and 15 high-confidence annotated geneswere further predicted based on linkage disequilibrium and lead SNPs.The transcriptome data of candidate geneswere explored within different tomato organs as well as various fruit tissues,and suggested specific expression patterns in fruit pericarp.Based on the genetic parameters of population differentiation and SNP distribution,tomato MA content has been more influenced by domestication sweeps and less affected by improvement sweeps in the long-term history of tomato breeding.In addition,genotype×environment interaction might contribute to the difference in domestication phenotypic data under different environments.This study provides new genetic insights into how tomato changed its MA content during breeding and makes available function-based markers for breeding by marker-assisted selection.Wenxian Gai Fan Yang Liangdan Yuan Saeed ul Haq Yaru Wang Ying Wang Lele Shang Fangman Li Pingfei Ge Haiqiang Dong Jinbao Tao Fei Wang Xingyu Zhang Yuyang Zhang 2023Horticulture Research2023,10,4:0
10A 21-bp InDel in the promoter of STP1 selected during tomato improvement accounts for soluble solid content in fruits显示文摘Domestication and improvement are important processes that generate the variation in genome and phonotypes underlying crop improvement.Unfortunately,during selection for certain attributes,other valuable traits may be inadvertently discarded.One example is the decline in fruit soluble solids content(SSC)during tomato breeding.Several genetic loci for SSC have been identified,but few reports on the underlying mechanisms are available.In this study we performed a genome-wide association study(GWAS)for SSC of the red-ripe fruits in a population consisting of 481 tomato accessions with large natural variations and found a new quantitative trait locus,STP1,encoding a sugar transporter protein.The causal variation of STP1,a 21-bp InDel located in the promoter region 1124 bp upstream of the start codon,alters its expression.STP1 Insertion accessions with an 21-bp insertion have higher SSC than STP1Deletion accessions with the 21-bp deletion.Knockout of STP1 in TS-23 with high SSC using CRISPR/Cas9 greatly decreased SSC in fruits.In vivo and in vitro assays demonstrated that ZAT10-LIKE,a zinc finger protein transcription factor(ZFP TF),can specifically bind to the promoter of STP1Insertion to enhance STP1 expression,but not to the promoter of STP1Deletion,leading to lower fruit SSC in modern tomatoes.Diversity analysis revealed that STP1 was selected during tomato improvement.Taking these results together,we identified a naturally occurring causal variation underlying SSC in tomato,and a new role for ZFP TFs in regulating sugar transporters.The findings enrich our understanding of tomato evolution and domestication,and provide a genetic basis for genome design for improving fruit taste.Ying Wang Chunmei Shi Pingfei Ge Fangman Li Lihui Zhu Yaru Wang Jinbao Tao Xingyu Zhang Haiqiang Dong Wenxian Gai Fei Wang Zhibiao Ye Donald Grierson Wei Xu Yuyang Zhang 2023Horticulture Research2023,10,3:0
11DAPK1(death associated protein kinase 1)mediates mTORC1 activation and antiviral activities in CD8^(+)T cells显示文摘Mechanistic target of rapamycin complex 1(mTORCt)regulates CD8^(+)T-cell differentiation and function.Despite the links between PI3K-AKT and mTORCI activation in CD8^(+)T cells,the molecular mechanism underlying mTORCI activation remains undear.Here,we show that both the kinase activity and the death domain of DAPK1 are required for maximal mTOR activation and CD8^(+)T-cell function.We found that TCR-induced activation of calcineurin activates DAPK1,which subsequently interacts with TSC2 via its death domain and phosphorylates TSC2 to mediate mTORCI activation.Furthermore,both the kinase domain and death domain of DAPK1 are required for CD8^(+)T-cell antiviral responses in an LCMV infection model.Together,our data reveal a novel mechanism of mTORCI activation that mediates optimal CD8^(+)T-cell function and antiviral activity.Zhengping Wei Pingfei Li Ran He Huicheng Liu Na Liu Yu Xia Guoyu Bi Qiuyang Du Minghui Xia Lei Pei Jing Wang Guihua Wang Zhao-Hui Tang Xiang Cheng Huabin Li Zhuoya Li Lilin Ye Arian Laurence Youming Lu Xiang-Ping Yang 2021Cellular & Molecular Immunology2021,18,1:0
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