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De Peng Yuan,Xiao Feng Xu,Hong Woo-Jong,Si Ting Wang,Xin Tong Jia,Yang Liu,Shuang Li,Zhi Min Li,Qian Sun,Qiong Mei,Shuai Li,정기홍,Song Hong Wei,Yuan Hu Xuan 한국식물생명공학회 2020 Plant biotechnology reports Vol.14 No.5
Sheath blight disease (ShB) severely afects rice production; however, the details of defense against ShB remain unclear. To understand the rice defense mechanism against ShB, an RNA sequencing analysis was performed using Rhizoctonia solani inoculated rice leaves after 48 h of inoculation. Among them, 3417 genes were upregulated and 2532 were downregulated when compared with the control group (>twofold or<1/2). In addition, the diferentially expressed genes were classifed via Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and MapMan analyses. Fifty-nine GO terms and seven KEGG pathways were signifcantly enriched. A MapMan analysis demonstrated that the phytohormone and metabolic pathways were signifcantly altered. Interestingly, the expression levels of 359 transcription factors, including WRKY, MYB, and NAC family members, as well as 239 transporter genes, including ABC, MFS, and SWEET, were signifcantly changed in response to R. solani AG1-IA inoculation. Additionally, OsWRKY53 and OsAKT1 negatively regulate the defense response in rice against R. solani via gain of function study for OsWRKY53 and loss of function study for OsAKT1, respectively. Furthermore, several diferentially expressed genes contain R. solani-responsive cis acting regulatory elements in their promoter regions. Taken together, our analyses provide valuable information for the additional study of the defense mechanisms against ShB, and the candidate genes identifed in this study will be useful resource for future breeding to enhance resistance against ShB.
Tan, Yun-Hong,Li, De-Rong,Zhou, Shi-Shun,Chen, Yong-Jun,Bramley, Gemma L.C.,Li, Bo Pensoft Publishers 2018 PhytoKeys Vol.94 No.-
<P>Abstract</P><P>A remarkable new <I>Premna</I> species from Myanmar, <I>P.grandipaniculata</I> Y.H.Tan & Bo Li (Lamiaceae), is here described and illustrated. It differs from all known congeneric taxa by having huge complicated panicles which have tertiary branches formed by spike-like thyrses. In <I>Premna</I>, such a spike-like thyrse is found in <I>P.bracteata</I> and <I>P.interrupta</I>, but those species can be easily distinguished from <I>P.grandipaniculata</I> by their habit, indumentum, leaf size and inflorescence structure.</P>
Li, De-Hai,Zhu, Tian-Jiao,Liu, Hong-Bing,Fang, Yu-Chun,Gu, Qian-Qun,Zhu, Wei-Ming The Pharmaceutical Society of Korea 2006 Archives of Pharmacal Research Vol.29 No.8
Four known butenolides were isolated from the ethyl acetate extracts of the culture broth of the marine-derived bacterium, Streptoverticillium luteoverticillatum, by bioassay-guided fractionation. The structures were identified on the basis of spectral data. The absolute configuration of compound (1) was determined by CD spectrum for the first time. Compounds 1-4 showed in vitro cytotoxicity against the murine lymphoma P388 and human leukemia K562 cell lines. This is the first report on the isolation of butenolides from the marine bacterium, Streptoverticillium luteoverticillatum, and their cytotoxic activities.
De Juan Zhi,Na Feng,Dong Ling Liu,Rong Li Hou,Mei Zu Wang,Xiao Xia Ding,Hong Yu Li 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.3
Although realgar bioleaching solution (RBS) hasbeen proved to be a potential candidate for cancer therapy, themechanisms of RBS anticancer are still far from beingcompletely understood. Dosed with RBS in C. elegans, themultivulva phenotype resulting from oncogenic ras gain-offunctionwasinhibited in a dose dependentmanner. It could beabrogated by concurrent treatment C. elegans with RBS andthe radical scavengerDMSO. However, RBS could not induceDAF-16 nuclear translocation in TJ356 or the increase of HSP16.2 expression in CL2070, which both could be arousedvisible GFP fluorescent variation to represent for oxidativestress generation. Treatment C. elegans with superoxide aniongenerator paraquat, similar results were also obtained. Ourresults indicated that RBS suppress excessive activated ras byincreasing reactive oxygen species (ROS) in C. elegans. Secondly, ROS induced by RBS significantly accumulated ona higher level inC. elegans with amutational ras than that withwild ras, thus leading to oxidative stress on ras gain-of-functionbackground rather than on normal ras context. Our resultsfirstly demonstrated that using C. elegans as amodel organismfor evaluating prooxidant drug candidates for cancer therapy.
De-Hai Li,Tian-Jiao Zhu,Hong-Bing Liu,Yu-Chun Fang,Qian-Qun Gu,Wei-Ming Zhu 대한약학회 2006 Archives of Pharmacal Research Vol.29 No.8
Four known butenolides were isolated from the ethyl acetate extracts of the culture broth of the marine-derived bacterium, Streptoverticillium luteoverticillatum, by bioassay-guided fractionation. The structures were identified on the basis of spectral data. The absolute configuration of compound (1) was determined by CD spectrum for the first time. Compounds 1-4 showed in vitro cytotoxicity against the murine lymphoma P388 and human leukemia K562 cell lines. This is the first report on the isolation of butenolides from the marine bacterium, Streptoverticillium luteoverticillatum, and their cytotoxic activities.
Li Shen,Li Rong-Rong,Wang De-Fa,Pan Xiu-Zhen,Guo Hong-Chao 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.5
A Y-shaped eccentrically braced high-strength steel frame is a novel structure. For such structure to exhibit good plastic deformation ability under severe earthquake, the links are made of ordinary steel ( f y ≤ 345 MPa), whereas high-strength steel ( f y ≥ 460 MPa) is used in the frame beam and column to reduce the cross section while ensuring the elasticity of the non-energy consuming component. The new structure has good ductility and energy-dissipating capacity. The response modifi cation factor R is crucial to the performance-based seismic design. For an appropriate and economical seismic design, the R value should be reasonably selected. In the 2016 edition of China's code for Seismic Design of Buildings (GB50011- 2010), it is obviously not reasonable to hide the R concept and adopt a constant value for all structural systems. It is important to study R and C d of a Y-shaped eccentrically braced high-strength steel frame, it can not only improve the structural performance design, but also provide reference for the future, and promotes the application of the structure in seismic areas, which presents excellent seismic performance. Therefore, in this study, structures with diff erent stories (4, 8, 12, and 16 stories) and link lengths (700, 900, and 1100 mm) were designed via the performance-based seismic design method. A static elastic–plastic analysis (Pushover analysis) and an incremental dynamic analysis (IDA) were conducted and the data thus obtained was fi tted to reach the IDA performance curve of the structure. The R and C d value of each prototype were calculated using the capability spectrum method, the number of structural story N and the link length e is considered. The results of the pushover analysis and IDA were compared; the values of each performance coeffi cient obtained can serve as a reference for the performance design of the new structural systems in the future.
Li, Hong-Chang,Rong, Chao-He,Song, De-Xi The Korean Society for Railway 2008 International Journal of Railway Vol.1 No.2
The concept of lean production originated and was applied mainly to manufacture industries Even proven successful with such companies as Toyota, lean production has to be combined railway transportation production in order to bring its function into full play. The paper analyzes for applicability of lean production in railway transportation production organization, puts forward implementation methods such as transportation resource integration, station-zone organization, dispatch command optimization, railway performance evaluation index system, etc., and makes an exemplification study of lean production of Urumqi Railway Bureau in China, which testifies the applicability and efficiency of railway lean production.
DE XU, HONG,CHO, SOON-CHANG,BANG, MI-AE,BAE, CHUN-SIK,CHOI, YEONSHIK,LI, YONG-CHUN,LIM, SEUNG-KIL,SHIM, JAEGAL,PARK, DAE-HUN D.A. Spandidos 2015 International journal of oncology Vol.46 No.6
<P>The World Health Organization (WHO) has reported that cancer is one of the most prevalent diseases and a leading cause of death worldwide. Many anticancer drug development studies have been pursued over the last few decades and several viable drugs have been discovered, such as paclitaxel, topotecan and irinotecan. Previously, our research group uncovered the cytocidal and cytostatic effects of the plant <I>Stephania delavayi</I> Diels. In this study, we determined the active chemical to be 6,7-di-O-acetylsinococuline (FK-3000). The FK-3000 half maximal inhibitory concentration (IC<SUB>50</SUB>) in MDA-MB-231 breast carcinoma cells at 48 h was 0.52 μg/ml and it induced apoptosis in a dose- and time-dependent manner. FK-3000 suppressed NF-κB nuclear translocation, decreased NF-κB phosphorylation, and decreased COX-2 protein expression. MDA-MB-231 xenografted mice were treated with FK-3000, Taxol, or their combination for 21 days. The tumor size was smallest in the co-treatment group, indicating that FK-3000 may have a synergistic effect with Taxol. FK-3000 treatment showed no adverse effects on blood cell counts, serum protein levels, or pathology. These studies demonstrate that FK-3000, isolated from <I>S. delavayi</I> Diels., is a promising, pathway-specific anticancer agent that exhibits low toxicity.</P>