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135篇 您的检索式:作者名="Lihua GUO"
    题名 作者 年代 出处 被引量
1African Swine Fever Virus MGF360-12L Inhibits Type Ⅰ Interferon Production by Blocking the Interaction of Importin α and NF-κB Signaling Pathway显示文摘African swine fever(ASF)is an infectious transboundary disease of domestic pigs and wild boar and spreading throughout Eurasia.There is no vaccine and treatment available.Complex immune escape strategies of African swine fever virus(ASFV)are crucial factors affecting immune prevention and vaccine development.MGF360 genes have been implicated in the modulation of the IFN-Ⅰresponse.The molecular mechanisms contributing to innate immunity are poorly understood.In this study,we demonstrated that ASFV MGF360-12 L(MGF360 families 12 L protein)significantly inhibited the mRNA transcription and promoter activity of IFN-βand NF-κB,accompanied by decreases of IRF3,STING,TBK1,ISG54,ISG56 and AP-1 m RNA transcription.Also,MGF360-12 L might suppress the nuclear localization of p50 and p65 mediated by classical nuclear localization signal(NLS).Additionally,MGF360-12 L could interact with KPNA2,KPNA3,and KPNA4,which interrupted the interaction between p65 and KPNA2,KPNA3,KPNA4.We further found that MGF360-12 L could interfere with the NF-κB nuclear translocation by competitively inhibiting the interaction between NF-κB and nuclear transport proteins.These findings suggested that MGF360-12 L could inhibit the IFN-Ⅰproduction by blocking the interaction of importinαand NF-κB signaling pathway,which might reveal a novel strategy for ASFV to escape the host innate immune response.Yisha Zhuo Zeheng Guo Tongtong Ba Cheng Zhang Lihua He Cuiping Zeng Hanchuan Dai 2021Virologica Sinica2021,36,2:21
2Optimal dynamic excess-of-loss reinsurance and multidimensional portfolio selection显示文摘In this paper, the surplus process of the insurance company is described by a Brownian motion with drift. In addition, the insurer is allowed to invest in a risk-free asset and n risky assets and purchase excess-of-loss reinsurance. Under short-selling prohibition, we consider two optimization problems: the problem of maximizing the expected exponential utility of terminal wealth and the problem of minimizing the probability of ruin. We first show that the excess-of-loss reinsurance strategy is always better than the proportional reinsurance under two objective functions. Then, by solving the corresponding Hamilton-Jacobi-Bellman equations, the closed-form solutions of their optimal value functions and the corresponding optimal strategies are obtained. In particular, when there is no risky-free interest rate, the results indicate that the optimal strategies, under maximizing the expected exponential utility and minimizing the probability of ruin, are equivalent for some special parameter. This validates Ferguson's longstanding conjecture about the relation between the two problems.Bai LiHua Guo JunYi 2010Science China Mathematics2010,53,7:12
3(a-Diimine)palladium catalyzed ethylene polymerization and (co)polymerization with polar comonomers显示文摘In this review, a recent development of cationic ?-diimine palladium(II) complexes for ethylene polymerization and copolymerization with polar functionalized comonomers was briefly described. First, the polymerization mechanism for this type of catalysts was discussed. Next, recent advances in ligand design were provided with special focus on the influence of ligand structures on the catalytic polymerization properties. Last, the ethylene homopolymerization and copolymerization with various polar comonomers, especially acrylate and vinyl ethers were summarized.Lihua Guo Changle Chen 2015Science China Chemistry2015,58,11:11
4Characteristics of fecal microbiota in non-alcoholic fatty liver disease patients显示文摘This study was designed to investigate the gut microbiota of patients with non-alcoholic fatty liver disease. The inclusive and exclusive criteria for NAFLD patients and healthy subjects were formulated, and detailed clinical data were collected. The genomic DNA of stool samples were extracted for 16 S r DNA sequencing, and the amplified V4-region was sequenced on the Illumina Miseq platform. Metastats analysis was performed to identify the differential taxa between the groups. Redundancy analysis was used to evaluate the association between gut microbial structure and clinical variables. Thirty NAFLD patients and37 healthy controls were involved. The 16 S r DNA sequencing showed that there was a dramatic variability of the fecal microbiota among all the individuals. Metastats analysis identified eight families and 12 genera with significant differences between the two groups. When some clinical parameters, such as waist-to-hip ratio(WHR) and homeostasis model assessment of insulin resistance(HOMA-IR), were enrolled in Redundancy analysis, the distribution of the two group of samples was obviously changed. The compositional shifts in fecal bacterial communities of NAFLD patients from the healthy controls were mainly at family or genus levels. According to our Redundancy analysis, insulin resistance and obesity might be closely related to both NAFLD phenotype and intestinal microecology.Fan Li Gang Sun Zikai Wang Wenming Wu He Guo Lihua Peng Lili Wu Xu Guo Yunsheng Yang 2018Science China(Life Sciences)2018,61,7:9
5MiR-181a-5p regulates 3T3-L1 cell adipogenesis by targeting Smad7 and Tcf7I2显示文摘Dan Ouyang Lifeng Xu Lihua zhang Dongguang Guo Xiaotong Tan Xiaofang Yu Junjie Qi Yaqiong Ye Qihong Liu Yongjiang Ma Yugu Li 2016Acta Biochimica et Biophysica Sinica2016,48,11:9
6Anti-oxidant effect of picroside II in a rat model of cerebral ischemia/reperfusion injury显示文摘Picroside II,the major active component of picroside,has been shown to induce PC12 cell axonal growth and relieve free radical damage.In vivo experiments have demonstrated that picroside II can improve neurological function in rats with cerebral ischemia/reperfusion injuries.In the present in vivo study,enzyme-linked immunosorbent assay and immunohistochemistry revealed that picroside II increased superoxide dismutase content and reduced inducible nitric oxide synthase content in the ischemic hemisphere.The effects of picroside II were similar to those of salvianic acid A sodium,an active control drug.These results indicate that picroside II exerts a neuroprotective effect,possibly by downregulating inducible nitric oxide synthase expression,increasing superoxide dismutase activity,and inhibiting neuronal apoptosis.Li Sun Xiaodan Li Ling Wang Lihua Qin Yunliang Guo Zhen Zhou 2011Neural Regeneration Research2011,6,15:8
7Genome-wide association study of vitamin E in sweet corn kernels显示文摘Vitamin E,consisting of tocopherols and tocotrienols,serves as a lipid-soluble antioxidant in sweet corn kernels,providing nutrients to both plants and humans.Though the key genes involved in the vitamin E biosynthesis pathway have been identified in plants,the genetic architecture of vitamin E content in sweet corn kernels remains largely unclear.In the present study,an association panel of 204 inbred lines of sweet corn was constructed.Seven compounds of vitamin E were quantified in sweet corn kernels at 28 days after pollination.A total of 119 loci for vitamin E were identified using a genome-wide association study based on genotyping by sequencing,and a genetic network of vitamin E was constructed.Candidate genes identified were involved mainly in RNA regulation and protein metabolism.The known gene ZmVTE4,encodingγ-tocopherol methyltransferase,was significantly associated with four traits(α-tocopherol,α-tocotrienol,theα/γ-tocopherol ratio,and theα/γ-tocotrienol ratio).The effects of two causative markers on ZmVTE4 were validated by haplotype analysis.Finally,two elite cultivars(Yuetian 9 and Yuetian 22)with a 4.5-fold increase in the sum ofα-andγ-tocopherols were developed by marker-assisted selection,demonstrating the successful biofortification of sweet corn.Three genes(DAHPS,ADT2,and cmu2)involved in chorismate and tyrosine synthesis were significantly associated with theα/γ-tocotrienol ratio.These results shed light on the genetic architecture of vitamin E and may accelerate the nutritional improvement of sweet corn.Yingni Xiao Yongtao Yu Gaoke Li Lihua Xie Xinbo Guo Jiansheng Li Yuliang Li Jianguang Hu 2020The Crop Journal2020,8,2:7
8Molecular dynamics simulations of thermal effects in nanometric cutting process显示文摘Understanding the basic action of how material removing in nanoscale is a critical issue of producing well-formed components.In order to clarify thermal effects on material removal at atomic level,molecular dynamics(MD)simulations of nanometric cutting of mono-crystalline copper are performed with Morse,EAM and Tersoff potential.The effects of cutting speed on temperature distribution are investigated.The simulation results demonstrate that the temperature distribution shows a roughly concentric shape around shear zone and a steep temperature gradient lies in diamond tool,a relative high temperature is located in shear zone and machined surface,but the highest temperature is found in chip.At a high cutting speed mode,the atoms in shear zone with high temperature implies a large stress is built up in a local region.GUO YongBo,LIANG YingChun,CHEN MingJun,BAI QingShun&LU LiHua Precision Research Engineering Institute,Harbin Institute of Technology,Harbin 150001,China 2010Science China(Technological Sciences)2010,53,3:7
9Internalization of NK cells into tumor cells requires ezrin and leads to programmed cell-in-cell death显示文摘细胞毒素的淋巴细胞是在有缺点的房间的有免疫力的反应和消除的组织的关键播放器。我们以前报导了生来的杀手(NK ) 房间进入目标肿瘤房间,导致在肿瘤房间以内的任何一个目标房间死亡或自我毁灭。然而,它留下了至于在成为主观以后的 NK 房间的命运逃犯并且 heterotypic cell-in-cell 过程最近是否与同型的 cell-in-cell 事件的不同,说出 entosis。这里,我们证明 NK 房间在肿瘤房间以内与 apoptosis 的最终的命运经历一个 cell-in-cell 过程并且表明成为主观过程要求肌动朊细胞骨架管理者, ezrin。设想 NK 房间怎么进入肿瘤房间,我们执行了 NK 房间成为主观的即时双颜色成像分析进肿瘤房间。令人惊讶地,大多数 NK 房间在他们的入口以后承诺规划房间死亡进肿瘤房间,它与在同型的 cell-in-cell 过程观察的 entosis 区别地不同。使内在化的 NK 房间的 apoptotic 房间死亡由 caspase 的激活是明显的 3 并且 DNA 破碎。而且,在成为主观以后的 NK 房间死亡被 caspase 禁止者稀释, Z-VAD-FMK,在肿瘤房间以内作为 NK 房间死亡的模式证实 apoptosis。决定为 NK 房间的入口必要的蛋白质因素进肿瘤房间,我们执行了基于 siRNA 的击倒的分析并且在 NK 房间成为主观发现了 ezrin 的一个关键角色。重要地, ezrin 的调停 PKA 的 phosphorylation 支持 NK 房间成为主观过程。我们的调查结果建议 ezrin 由管理 NK 房间成为主观进肿瘤房间的新奇规章的机制。Shan Wang Zhen Guo Peng Xia Tingting Liu Jufang Wang Shan Li Lihua Sun Jianxin Lu Qian Wen Mingqian Zhou Li Ma Xia Ding Xiaoning Wang Xuebiao Yao 2009Cell Research2009,19,12:6
10Antiferromagnetic element Mn modified PtCo truncated octahedral nanoparticles with enhanced activity and durability for direct methanol fuel cells显示文摘Pt-based magnetic nano catalysts are one of the most suitable cand idates for electrocatalytic materials due to their high electrochemistry activity and retrievability.Unfortunately,the inferior durability prevents them from being scaled-up,limiting their commercial applications.Herein,an antiferromagnetic element Mn was introduced into PtCo nanostructured alloy to synthesize uniform Mn-PtCo truncated octahedral nanoparticles(TONPs)by one-pot method.Our results show that Mn can tune the blocking temperature of Mn-PtCo TONPs due to its an tiferromag netism.At low temperatures,Mn-PtCo TONPs are ferromag netic,and the coercivity in creases gradually with in creasi ng Mn contents.At room temperature,the Mn-PtCo TONPs display superparamag netic behavior,which is greatly helpful for in dustrial recycling.Mn doping can not only modify the electronic structure of PtCo TONPs but also enhanee electrocatalytic performance for methanol oxidation reaction.The maximum specific activity of Mn-PtCo-3 reaches 8.1 A`m^-2,3.6 times of commercial Pt/C(2.2 A·m^-2)and 1.4 times of PtCo TONPs(5.6 A`m^-2),respectively.The mass activity decreases by only 30%after 2,000 cycles,while it is 45%and 99%(nearly inactive)for PtCo TONPs and commercial Pt/C catalysts,respectively.Qiqi Zhang Jialong Liu Tianyu Xia Jie Qi Haochang Lyu Baoyuan Luo Rongming Wang Yizhong Guo Lihua Wang and Shouguo Wang 2019Nano Research2019,12,10:5
11Effects of RE,V,Ti and B composite modification on the microstructure and properties of high chromium cast iron containing 3% molybdenum显示文摘The effects of RE, V, Ti and B on the microstructure and properties of high chromium cast iron containing 3% molybdenum under as-cast and heat treatment conditions were investigated with the method of comparing experiments. The results show that with the increase of RE content, the primary austenite of high chromium cast iron is obviously refined. The morphology of carbide is changed from netlike and lath to small multiangular isolated blocks or massive blocks, the isolated degree of carbide is improved obviously, and the size is significantly refined. The addition of V and B into high chromium cast iron can refine the microstructure, reduce coarse columnar crystals and make the carbide smaller and uniform. Through composite modification with RE, V, Ti and B, the hardness, wear resistance and impact toughness of high chromium cast iron are increased conspicuously. After heat treatment, the hardness of high chromium iron is increased significantly, but the toughness and wear resistance do not show great improvement.GUO Erjun WANG Lihua WANG Liping HUANG Yongchang 2009Rare Metals2009,28,6:4
12Two-stage local constrained sparse coding for fine-grained visual categorization显示文摘Fine-grained visual categorization(FGVC)[1,2]classifies the objects into categories which are both visually and semantically similar.Currently,the FGVC has included many species,i.e.,flowers,birds,and dogs.In these species,all categories have a characteristic with intra-class diversity and inter-class similarity.Lihua GUO Chenggang GUO Lei LI Qinghua HUANG Yanshan LI Xuelong LI 2018Science China(Information Sciences)2018,61,1:4
13microRNA-18a Promotes Cell Migration and Invasion Through Inhibiting Dicer l Expression in Hepatocellular Carcinoma In Vitro显示文摘Objective To investigate the effects of microRNA-18a(miR-18a) on migration and invasion of hepatocellular carcinoma(HCC) cells,and its possible mechanism associated with Dicer l. Methods HepG 2 and HepG 2.2.15 cells were transfected with miR-18 a inhibitor using Lipofectamine. Cell invasion was evaluated by transwell invasion assay,and cell migration was detected by transwell migration and wound-healing assays. Moreover,luciferase reporter assay was used to identify whether Dicer expression was regulated by miR-18 a. Real-time RT-PCR and western blot were performed to analyze Dicer 1 expression. In addition,a functional restoration assay was performed to investigate whether miR-18 a promotes HCC cell migration and invasion by directly targeting Dicer 1. Results miR-18 a inhibitor can suppress the migration and invasion of HCC cells. Furthermore,suppression of Dicer l expression by small interfering RNA essentially abolished the inhibition of cell migration and invasion induced by miR-18 a inhibitor,restorating these activities to levels similar to the parental HCC cells. Interestingly,suppression of miR-18 a in HCC cells resulted in enhanced expression of Dicer l. In addition,the results of a luciferase assay demonstrated targeted regulation of Dicer l by miR-18 a. Conclusion Our findings suggest that miR-18 a promotes migration and invasion of HCC cells by inhibiting Dicer l expression.Xiufen Zhang Bo Yu Fuzheng Zhang Zijian Guo Lihua Li 2017Chinese Medical Sciences Journal2017,32,1:3
14Simultaneous cooperative relative localization and distributed formation control for multiple UAVs显示文摘Dear editor,In recent years,formation control of multiple unmanned aerial vehicles(UAVs)has been widely studied[1].As a motion control strategy,it aims to realize UAV swarms with many practical applications such as surveillance,rescue and inspection in complex environments,especially in GPSdenied environments.Formation flights have been demonstrated by many researchers,but most still rely on some external positioning systems such as GPS,motion tracking systems,and radio-based positioning systems.However,these infrastructure dependent systems require careful configuration(e.g.,the deployment of anchor nodes)and their operation areas are strictly limited.Moreover,in cluttered urban environments,GPS is unreliable.To get rid of the dependence on external infrastructures,Ref.[2]studied the distancebased formation by using inter-UAV range measurements,but the experiment reported was still GPS dependent.Kexin GUO Xiuxian LI Lihua XIE 2020Science China(Information Sciences)2020,63,1:3
15OPTIMAL MULTI-ASSET INVESTMENT WITH NO-SHORTING CONSTRAINT UNDER MEAN-VARIANCE CRITERION FOR AN INSURER显示文摘这份报纸在标准下面为一个保险公司考虑最佳的投资策略吝啬变化。风险过程是一个复合泊松过程,保险公司能在无风险的财产和多重危险财产投资。这份报纸获得最佳的投资政策用随机线性二次(LQ ) 与没有短控制理论限制。然后,有效策略(最佳的投资策略) 和有效边疆被一条确认定理与 Hamilton-Jacobi-Bellman (HJB ) 方程的粘性答案明确地导出。Junna BI Junyi GUO Lihua BAI 2011Journal of Systems Science & Complexity2011,24,2:3
16Comprehensive profiling of EBV gene expression in nasopharyn- geal carcinoma through paired-end transcriptome sequencing显示文摘在鼻咽的癌(NPC ) 的 Epstein-Barr 病毒(EBV ) 基因的潜伏的表示模式广泛地被调查了,并且在 NPC 的几 lysin 的基因的表示被报导了。然而,通过在 NPC 的 EBV transcriptome 分析的全面信息是有限的。我们执行了对结束 RNA-seq 到系统地并且包括地在 NPC 织物和 C666-1 NPC 房间线描绘 EBV 基因的表示,它一致地带 EBV。除了限制打 II 潜伏感染,类型 III 潜伏 EBNA3s 基因和lysin 的基因的一个实质的数字的抄本,例如 BZLF1 , BRLF1 ,和 BMRF1 ,通过 RNA-seq 被检测并且进一步通过也执行的实时 PCR.We 在 C666-1 房间和 NPC 织物被验证聚类分析以 EBV 基因表示分类 NPC 耐心的组,它介绍了 NPC 样品的二种子类型。结果在 NPC 病人揭示了 EBV 基因表示的有趣的模式。这个聚类与 heterotrimeric G 蛋白质发信号有关与许多发信号的小径被相关,例如那些,发炎由 chemokine 并且 cytokine 发信号调停了,核糖体,蛋白质新陈代谢,流行性感冒感染,和 ECM 受体相互作用。我们的联合调查结果建议在 NPC 的 EBV 基因的表示被限制不仅打 II 潜伏基因而且打 III 潜伏和 lysin 的基因。这研究在 NPC 的发展提供了进一步的卓见进 EBV 的潜在的角色。Lijuan Hu Zhirui Lin YanhengWu Juqin Dong Bo Zhao Yanbing Cheng Peiyu Huang Lihua Xu Tianliang Xia Dan Xiong Hongbo Wang Manzhi Li Ling Guo Elliott Kieff YixinZeng 2016Frontiers of Medicine2016,10,1:3
17MicroRNA-195a-5p inhibits mouse medullary thymic epithelial cells proliferation by directly targeting Smad7显示文摘MiR-195 在在肿瘤的不同类型禁止房间增长被含有。它是否贡献 thymic 的过程上皮的房间(侦探) 增长仍然保持不清楚。在这研究,我们发现 miR-195a-5p 在从变老的老鼠孤立的侦探是高度起来调整的。进一步的实验证明 miR-195a-5p 模仿禁止的 transfection 老鼠的增长髓的 thymic 第 1 行上皮的房间(MTEC1 ) ,而在 MTEC1 的 miR-195a-5p 禁止者的 transfection 有相反的效果。另外, miR-195a-5p 没在 MTEC1 apoptosis 上有明显的效果。而且, Smad7,转变生长因素小径的一个否定管理者,被酶试金作为 miR-195a-5p 的一个直接目标证实。一起拿,我们的结果显示 miR-195a-5p 禁止 MTEC1 增长,至少部分地,经由 Smad7 的下面规定。Dongguang Guo Yaqiong Ye Junjie Qi Lifeng Xu Lihua Zhang Xiaolong Tan Zhigang Tan Xiaofang Yu Yuan Zhang Yongjiang Ma Yugu Li 2016Acta Biochimica et Biophysica Sinica2016,48,3:3
18MicroRNA-181a-5p enhances cell proliferation in medullary thymic epithelial cells via regulating TGF-β signaling显示文摘在从不同年龄的老鼠的胸腺纸巾的 miRNAs 的表示侧面在我们的以前的学习被表明了。在 miRNA 表达式侧面的综合分析以后,我们证明 miR-181a-5p 的表达式显著地在 thymic 被减少从 10- 的上皮的房间(侦探) 到 19-month-old 鼠标当与那相比在从 1-month-old 的侦探由量的反向的 transcriptase 聚合酶的鼠标锁住反应时。我们在侦探假设了那 miR-181a-5p 可能通过调整一些基因或发信号的小径与年龄相关的胸腺复杂物被联系。测试这个假设,老鼠髓的 thymic 上皮的房间(MTEC1 ) 被使用。有 miR-181a-5p 的 Transfection 模仿支持了 MTEC1 房间的增长,但是没影响 apoptosis。效果被颠倒 miR-181a-5p 的表示什么时候在 MTEC1 房间被压制。而且,转变生长因素贝它受体(Tgfbr1 ) 我被酶试金作为 miR-181a-5p 的一个直接目标证实。而且,它被发现 miR-181a-5p 的那 overexpression 下面调整 Smad3 的 phosphorylation 并且堵住了发信号的转变生长因素贝它的激活。不过,一相反地,关联在 Tgfbr1 的表示之间被观察,在侦探的 miR-181a-5p 源于不同年龄的老鼠。一起,我们提供 miR-181a-5p 可以是在侦探,和表示的增长的一个重要内长的管理者的证据在侦探的 miR-181a-5p 的层次可以与年龄相关的胸腺复杂物被联系。Dongguang Guo Yaqiong Ye Junjie Qi Lihua Zhang Lifeng Xu Xiaotong Tan Xiaofang Yu Qihong Liu Jilong Liu Yuan Zhang Yongjiang Ma Yugu Li 2016Acta Biochimica et Biophysica Sinica2016,48,9:2
19Knowledge transferred adaptive filter pruning for CNN compression and acceleration显示文摘Dear editor,It is necessary to compress the convolutional neural network(CNN) for resource-constrained devices deployment, resulting in accelerated model training and inference. “Soft” filter pruning(SFP) [1] conducts dynamic pruning operations during training time, allowing updates of the pruned filters to compensate for any possible misoperation. However.Lihua GUO Dawu CHEN Kui JIA 2022Science China(Information Sciences)2022,65,12:2
20Phenotypic similarities in pigs with SOX10^(c.321dupC)and SOX10^(c.325A>T)mutations implied the correlation of SOX10 haploinsufficiency with Waardenburg syndrome显示文摘SOX10 is a causative gene of Waardenburg syndrome(WS)that is a rare genetic disorder characterized by hearing loss and pigment disturbance.More than 100 mutations of SOX10 have been found in patients with Type 2 WS(WS2),Type 4 WS(WS4),and more complex syndromes.However,no mutation hotspot has been detected in SOX10,and most cases are sporadic,making it difficult to establish a correlation between the high phenotypic and genetic variability.In this study,a duplication of the 321th cytosine(c.321dupC)was introduced into SOX10 in pigs,which induced premature termination of the translation of SOX10(p.K108QfsX45).The premature stop codon in Exon 3 triggered the degradation of mutant mRNA through nonsense-mediated mRNA decay.However,SOX10^(c.321dupC) induced a highly similar phenotype of WS2 with heterogeneous inner ear malformation compared with its adjacent missense mutation SOX10^(c.325A>T).In addition,a site-saturation mutation analysis of the SOX10 N-terminal nuclear localization signal(n-NLS),where these two mutations located,revealed the correlation between SOX10 haploinsufficiency and WS by an in vitro reporter assay.The analysis combining the in vitro assay with clinical cases may provide a clue to clinical diagnoses.Tingting Lin Lihua Luo Weiwei Guo Wei Ren Chuanhong Liu Hong Wei Shiming Yang Yong Wang 2020Journal of Genetics and Genomics2020,47,12:2
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