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RISS 인기검색어
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- 저자 : Shiyue Qi (검색결과 3 건)
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Shiyu Wang,Bo Hu,Qi Wei,Jianya Su 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.2
Hexamerins are hemolymph-proteins, which are mainly considered as storage proteins for non-feeding stages, and also undertake other roles during insect development and growth, however the characterization of hexamerin proteins in Spodoptera exigua is less understood. In this study five new hexamerin genes were identified and a total seven hexamerin genes were reported in S. exigua. These hexamerins contain the typical domains of hemocyanin at the N-terminal, C-terminal and in the middle of their protein sequences. These genes are mainly expressed in fat body, and the signal peptide sequences at their N-terminal of protein sequences can drive the expressed protein to excrete into hemolymph after synthesis. The phylogenetic analysis and amine acid composition revealed S. exigua express five different types of hexamerins: 1) Storage protein rich in methionine residue (MRSP), 2) Storage protein moderately rich in methionine (MMRSP), 3) Hexamerin with high composition of aromatic amino acids (Arylphorin), 4) Arylphorin-like hexamerin, and 5) Riboflavin-binding hexamerin (RbH). The phylogenetic pattern combined with the comparison of conserved histidine residues in copper binding sites of hexamerins revealed basal position of RbH and the evolutionary pathway in lepidopteran hexamerins. Finally, the induction expression of hexamerins by insecticide, lambda-cyhalothrin, were analyzed, results showed that lambda-cyhalothrin exposure may down-regulate their expression. This study increased the gene number of hexamerin to seven, and reported their expression and structural characterizations, the finding will facilitate the understand of hexamerin in other insects.
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Zhi Wang,Longxiang Wu,Shiyu Tong,Xiheng Hu,Xiongbing Zu,Yuan Li,Wei He,Longfei Liu,Minfeng Chen,Lin Qi 한국통합생물학회 2016 Animal cells and systems Vol.20 No.2
Resveratrol possesses a wide spectrum of pharmacological properties and has been an ideal alternative drug for the treatment of different cancers, including prostate cancer. However, the mechanisms by which resveratrol inhibits the growth of prostate cancer are still not fully elucidated. To understand the effect of resveratrol on the apoptosis and the epithelial-tomesenchymal transition (EMT) of prostate cancer as well as its related mechanism, we investigated the potential use of resveratrol in PC-3 prostate cancer cells in vitro using real-time PCR, fluorescence-activated cell sorting, Western blotting, etc. Resveratrol suppresses the PC-3 prostate cancer cell growth and induces apoptosis. Resveratrol also influences the expression of EMT-related proteins (increased E-cadherin and decreased Vimentin expression). Finally, resveratrol also suppressed Akt phosphorylation in PC-3 cells. This study indicates that resveratrol may be a potential anti-cancer treatment for prostate cancer; moreover, it provides new evidence that resveratrol suppresses prostate cancer growth and metastasis.
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Qingxiang Yang,Jia Wang,Xinkuan Han,Yuanyuan Xu,Dong Liu,Hongxin Hao,Xuemei L,Yuhui Guo,Tianqi Niu,Shiyue Qi 한국생물공학회 2014 Biotechnology and Bioprocess Engineering Vol.19 No.1
In this study, the bacterial dynamics andstructure compositions in the two-stage biological processof a full-scale printing and dyeing wastewater (PDW)treatment system were traced and analyzed by terminalrestriction fragment length polymorphism (T-RFLP) and454 pyrosequencing techniques. T-RFLP analysis showedthat the microbial communities experienced significantvariation in the process of seed sludge adaptation to thePDW environments and were in constant evolution duringthe whole running period of the system, despite theconstant COD and color removal effects. Pyrosequencingresults indicated that the two-stage biological systemharbored rather diverse bacteria, with Proteobacteria beingthe predominant phylum during the steady running period,although its microbial compositions differed. The firststageaerobic tank was dominated by α-Proteobacteria(89.05% of Proteobacteria), whereas in the second-stageaerobic tank, β- and γ-Proteobacteria, besides α-Proteobacteria,were the dominant bacterial populations.
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