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( Wu Jie Su ),( Yan Wu ),( Hui Ling Wu ),( Wen Bing Wang ) 한국잠사학회 2007 International Journal of Industrial Entomology Vol.15 No.2
Open reading frame 4 of Bombyx mori nucleopolyhedrovirus (BmNPV), designated as Bm4, is a gene whose function is completely unknown. With the recently developed BmNPV bacmid and a modified pFastBac1 whose polyhedrin promoter was replaced with ie1 promoter, a recombinant bacmid expressing Bm4-EGFP fusion protein under the control of ie1 promoter in BmN cells was successfully constructed. The result not only showed that the polyhedrin promoter can be replaced efficiently with other promoters to direct the expression of foreign gene in BmN cells by using Bac-to-Bac/BmNPV baculovirus expression system but also laid the foundation for rescue experiment of Bm4 deletion mutant due to the ability of ie1 promoter to direct gene expression throughout the infection cycle.
On the denominators of ε-harmonic numbers
Bing-Ling Wu,Xiao-Hui Yan 대한수학회 2020 대한수학회보 Vol.57 No.6
Let $H_n$ be the $n$-th harmonic number and let $v_n$ be its denominator. Shiu proved that there are infinitely many positive integers $n$ with $v_n =v_{n+1}$. Recently, Wu and Chen proved that the set of positive integers $n$ with $v_n = v_{n+1}$ has density one. They also proved that the same result is true for the denominators of alternating harmonic numbers. In this paper, we prove that the result is true for the denominators of $\varepsilon$-harmonic numbers, where $\varepsilon=\{ \varepsilon_i \}_{i=1}^\infty $ is a pure recurring sequence with $\varepsilon_i\in \{-1,1\}$.
Wu, Zhen-Guo,Li, Jun-Tao,Zhong, Yan-Jun,Guo, Xiao-Dong,Huang, Ling,Zhong, Ben-He,Agyeman, Daniel-Adjei,Lim, Jin-Myoung,Kim, Du-ho,Cho, Maeng-hyo,Kang, Yong-Mook American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.25
<P>A synergistic approach for advanced cathode materials is proposed. Sodium manganese oxide with a layered-tunnel hybrid structure was designed, synthesized, and subsequently investigated. The layered-tunnel hybrid structure provides fast Na ion diffusivity and high structural stability thanks to the tunnel phase, enabling high rate capability and greatly improved cycling stability compared to that of the pure P2 layered phase while retaining the high specific capacity of the P2 layered phase. The hybrid Structure provided a decent discharge capacity of 133.4 mAh g(-1) even at 8 C, which exceeds the reported hest rate capability for Mn-based cathodes. It also displayed an impressive cycling stability, maintaining 83.3 mAh g(-1) after 700 cycles at 10 C. Theoretical calculation and the potentiostatic intermittent titration technique (PITT) demonstrated that this hybrid structure helps enhance Na ion diffusivity during charge and discharge, attaining, as a result, an unprecendented electrochemical performance.</P>
Ling Wang,Dong-yang Dai,Xia Wu,Yun-yan Sheng,Peng Ji,Dan-dan Li,Fan Zhang,Di Wang 한국원예학회 2021 원예과학기술지 Vol.39 No.5
The male sterile plants have higher heterosis in the production of hybrid seeds. The ABORTED MICROSPORES (AMS) gene has been demonstrated to be a candidate gene for ms-5. However, the genetic mechanism underlying AMS-mediated male sterility (MS) regulatory networks in melon (Cucumis melo L.) is still not clearly understood. In the present study, we used transcriptome sequencing analysis, yeast hybridization technology, quantitative real-time polymerase chain reaction (qRT-PCR), and bioinformatics analyzed to systematically investigate the AMS-mediated MS regulatory networks in melon. A set of 15 proteins interacting with AMS, including the C. melo L. Zinc Ribbon protein 1 (CmZR1) gene, was identified using the yeast one-hybrid (Y1H) system and further confirmed using the yeast two-hybrid (Y2H) assay. The interaction of the CmZR1 protein with the C. melo L. Pectin Methylesterase Inhibitor 1 (CmPMEI1) protein was identified and further verified by the glutathione S-transferase (GST) pull-down technique. Bioinformatics analyzed the physical and chemical properties, gene structure, and kinship of the melon PMEI family. We proposed a partial regulatory network for melon MS in which the interaction of CmPMEI1 protein with CmZR1 protein regulates the expression of the AMS gene for pollen abortion. These findings provide important information for increasing the understanding of the molecular mechanism of the MS regulatory network in melon.
Wu, Ya-Zhou,Yang, Huan,Zhang, Ling,Zhang, Yan-Qi,Liu, Ling,Yi, Dong,Cao, Jia Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.5
Background: Analysis of gene-gene and gene-environment interactions for complex multifactorial human disease faces challenges regarding statistical methodology. One major difficulty is partly due to the limitations of parametric-statistical methods for detection of gene effects that are dependent solely or partially on interactions with other genes or environmental exposures. Based on our previous case-control study in Chongqing of China, we have found increased risk of colorectal cancer exists in individuals carrying a novel homozygous TT at locus rs1329149 and known homozygous AA at locus rs671. Methods: In this study, we proposed statistical method-crossover analysis in combination with logistic regression model, to further analyze our data and focus on assessing gene-environmental interactions for colorectal cancer. Results: The results of the crossover analysis showed that there are possible multiplicative interactions between loci rs671 and rs1329149 with alcohol consumption. Multifactorial logistic regression analysis also validated that loci rs671 and rs1329149 both exhibited a multiplicative interaction with alcohol consumption. Moreover, we also found additive interactions between any pair of two factors (among the four risk factors: gene loci rs671, rs1329149, age and alcohol consumption) through the crossover analysis, which was not evident on logistic regression. Conclusions: In conclusion, the method based on crossover analysis-logistic regression is successful in assessing additive and multiplicative gene-environment interactions, and in revealing synergistic effects of gene loci rs671 and rs1329149 with alcohol consumption in the pathogenesis and development of colorectal cancer.
( Wu Song ),( Chu Ling Chen ),( Yan Li ) 한국감성과학회 2019 한국감성과학회 국제학술대회(ICES) Vol.2019 No.-
The present study aimed at exploring the visual cognitive neural mechanism of balanced beauty composition by experiment with the visual art elements as the materials and by use of the method of neural detection technology to determine the degree of aesthetic activation, to obtain effective electrical nerve physiological data. The main findings are as followings: first, images in line with the principle of balanced composition evoked greater P3 peak and a shorter latent period, and will provide more aesthetic experience; second, the discovery of a rare N4-like component in beauty judgments is related to the brain's novelty processing; The present study avoided the subjectivity of aesthetic experience, from a point of control view of the aesthetic elements variables of stimulation images to achieve a specific scientific inquiry of aesthetic theory, we defined the scientificity of principle of balanced composition.
Association Between the XRCC3 Thr241Met Polymorphism and Cervical Cancer Risk: a Meta-analysis
Qin, Ling-Yan,Chen, Xu,Li, Ping,Yang, Zheng,Mo, Wu-Ning Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11
Background: Numerous epidemiological studies have been conducted to evaluate the association between variants of the DNA repair gene XRCC3 and cancer risk. Here we focused on one XRCC3 polymorphism and development of cervical cancer, performing a meta-analysis. Methods: The pooled association between the XRCC3 Thr241Met polymorphism and cervical cancer risk was assessed by odds ratios (ORs) and their 95% confidence intervals (95%CIs). Results: A total of 5 case-control studies met the inclusion criteria. The pooled ORs for the total included studies showed no association among homozygotes TT vs. CC: OR=1.93, 95%CI=0.68-5.49, P=0.22; dominant model TT+TC vs. CC: OR=1.37, 95%CI=0.90-2.06, P=0.14; and recessive model TT vs. TC+CC: OR=1.76, 95%CI=0.68-4.55, P=0.25, but might be a slight risk factor for cervical cancer in heterozygote contrast TT vs. CT: OR= 1.33, 95%CI=1.04-1.71, P=0.02. In subgroup analysis, significant associations were found for Asians under all genetic models. Conclusions: Our meta-analysis suggested the XRCC3 Thr241Met polymorphism might not act as a cervical cancer risk factor overall. However, in subgroup analysis, a significant association was found in Asians under all genetic models. The association should be studied with a larger, stratified population, especially for Asians.
Nian-Wu He,,Yan Zhao,Ling Guo,Jun Shang,Xing-Bin Yang 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.4
Dietary and medicinal uses of Panax notoginseng have been associated with reduced risk of cancer. This study was designed to investigate the profiles of P. notoginseng saponin extract (PNSE), the major bioactive ingredients in P. notoginseng (Burk.) F.H. Chen, by high-performance liquid chromatography, and, for the first time, the anticancer effect of PNSE in the human colon cancer cell line LoVo was further evaluated. The major saponins present in PNSE were ginsenosides Rg1 (31.1%) and Rb1 (34.4%), and the total content of the eight saponins identified (notoginsenoside R1, ginsenosides Rg1, Re, Rb1, Rc, and Rd, and isomeric ginsenosides Rb2 and Rb3) was 81.7%, indicating that it was a highly purified standardized saponin extract. Furthermore, PNSE was found to have a markedly cytotoxic effect and antiproliferative activity against the LoVo cell line in a dose- and time-dependent manner. Flow cytometry analysis demonstrated that PNSE caused cell cycle arrest at S phase. Moreover, PNSE was found to possess antioxidative capacities in the 1,1-diphenyl-2-picrylhydrazyl free radical scavenging assay and hydroxyl radical scavenging assay in vitro. Taken together, the present results suggest that naturally occurring PNSE may provide significant natural defense against human colon cancer.
The CCND1 G870A Gene Polymorphism and Brain Tumor Risk: a Meta-analysis
Qin, Ling-Yan,Zhao, Li-Gang,Chen, Xu,Li, Ping,Yang, Zheng,Mo, Wu-Ning Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.8
Background: In recent years, numerous studies have been performed to investigate the CCND1 G870A gene polymorphism impact on brain tumors susceptibility. Unfortunately, the results of previous studies were inconsistent. Therefore, we performed a meta-analysis to derive a more precise estimation of any association. Materials and Methods: We conducted a search in PubMed, Embase and CNKI covering all published papers up to November, 2013. Odds ratios (ORs) and their 95% confidence intervals (95%CIs) were applied to assess associations. Results: A total of 6 publications including 9 case-control studies met the inclusion criteria. The pooled ORs for the total included studies showed significant association among comparison A vs G (OR= 1.246, 95%CI= 1.092-1.423, p= 0.001), homozygote comparison AA vs GG (OR= 1.566, 95%CI= 1.194-2.054, p= 0.001), heterozygote comparison AG vs GG (OR= 1.290, 95%CI= 0.934-1.782, p= 0.122), dominant model AA/GA vs GG (OR= 1.381, 95%CI= 1.048-1.821, p= 0.022) and recessive model AA vs GA/GG (OR= 1.323, 95%CI= 1.057-1.657, p= 0.015) especially in glioma. Conclusions: CCND1 G870A polymorphism may increase brain tumor risk, especially for gliomas. However, more primary large scale and well-designed studies are still required to evaluate the interaction of CCND1 G870A polymorphism with brain tumor risk.