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Bevacizumab Regulates Cancer Cell Migration by Activation of STAT3
Wu, Huan-Huan,Zhang, Shuai,Bian, Huan,Li, Xiao-Xu,Wang, Lin,Pu, Yin-Fei,Wang, Yi-Xiang,Guo, Chuan-Bin Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.15
There are numerous clinical cases indicating that long-term use of bevacizumab may increase the invasiveness of tumors. However, to date, little is known about underlying molecular mechanisms. Therefore, the purpose of our study was to investigate effects of bevacizumab in four cancer cells lines (WSU-HN6, CAL27, Tca83, and HeLa). It was found to promote migration and invasion in the WSU-HN6 and Tca83 cases, while exerting inhibitory effects in CAL27 and HeLa cells. The signal transducer and activator of transcription (STAT) 3 inhibitors niclosamide and S3I-201 inhibited the STAT3 signal pathway, which is activated by bevacizumab. These inhibitors also substantially blocked bevacizumab-induced migration of WSU-HN6 and Tca83 cells. Bevacizumab upregulated interleukin (IL)-6 and phosphorylated (p)-STAT3 expression time-dependently. Therefore, we propose that bevacizumab has differential effects on the migration of different cancer cell lines and promotes migration via the IL-6/STAT3 signaling pathway.
Guo, Huan-Mei,Wang, Xian,Jian, Fang Fang,Xiao, Hai Lian,Zhao, Pu Su Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.5
Two fluoro-substituted 2-pyrazoline derivatives, 1-phenyl-3-(4-methoxyphenyl)-5-(4-fluorophenyl)-2-pyrazoline (1) and 1-phenyl-3-(4-methoxyphenyl)-5-(2-fluoro-phenyl)-2-pyrazoline (2) have been synthesized and characterized by elemental analysis, IR, UV-Vis and fluorescence spectra. The crystal structure of 1 has been determined by X-ray single crystal diffraction. For the two compounds, density functional theory (DFT) calculations of the structures and natural population atomic charge analysis (NPA) have been performed at B3LYP/6-311G** level of theory. By using TD-DFT method, electron spectra of 1 and 2 have been predicted, which are very approximate with the experimental ones. Comparative studies on 1 and 2 indicate that the location change of fluorine atom in 5-position phenyl ring of 2-pyrazoline does not make significant change of geometries and electronic transition bands, but it leads to evident change of atomic charge distributions and peak intensities of UV and fluorescence spectra.
Measurement and data processing method of machined surface for assembly performance prediction
Huan Guo,Zhijing Zhang,Muzheng Xiao,Xin Jin,Heng Liu 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.4
The assembly process cannot meet the increasing demands with the conventional method. To obtain an optimal assembly performance, the machined surface should be reconstructed, and further analysis should be conducted to provide a direct guidance for the assembling process. Surface topography can be represented by a sufficient number of points; however, the measurement of dense points would be time-consuming. In this study, the measured points are arranged in a nonuniform manner, and processed by interpolation for the reconstruction of the actual surface and the prediction of the assembly performance. Point clouds processed by 4 interpolation methods were used to verify the proposed method. The sampling strategy and data processing was concluded to be accurate; measurement time was significantly decreased compared to the dense points. It is proposed that the three indexes should be taken into consideration when the method is used to process the measurement data of different machined surfaces.
Huan Mei Guo,Xian Wang,Fang Fang Jian,Hai Lian Xiao,Pu Su Zhao 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.5
Two fluoro-substituted 2-pyrazoline derivatives, 1-phenyl-3-(4-methoxyphenyl)-5-(4-fluorophenyl)-2-pyrazoline (1) and 1-phenyl-3-(4-methoxyphenyl)-5-(2-fluoro-phenyl)-2-pyrazoline (2) have been synthesized and characterized by elemental analysis, IR, UV-Vis and fluorescence spectra. The crystal structure of 1 has been determined by X-ray single crystal diffraction. For the two compounds, density functional theory (DFT) calculations of the structures and natural population atomic charge analysis (NPA) have been performed at B3LYP/6-311G** level of theory. By using TD-DFT method, electron spectra of 1 and 2 have been predicted, which are very approximate with the experimental ones. Comparative studies on 1 and 2 indicate that the location change of fluorine atom in 5-position phenyl ring of 2-pyrazoline does not make significant change of geometries and electronic transition bands, but it leads to evident change of atomic charge distributions and peak intensities of UV and fluorescence spectra.
Spectral Factorization for Multiple Input Delayed Discrete-Time Systems with Applications to Control
Hong-Guo Zhao,Huan-Shui Zhang,Peng Cui,Xiao Lu 제어·로봇·시스템학회 2010 International Journal of Control, Automation, and Vol.8 No.3
This paper deals with the linear quadratic regulation problems for the linear discrete-time systems with input delays. The design of the optimal control law is transformed into solving one Diophantine equation and one spectral factorization with delays. A new and simple approach for the spectral factorization is proposed based on reorganized innovation analysis. The calculation of spectral factor comes down to solving Riccati equations with the same dimension as the original systems.
TC1 (C8orf4) is involved in ERK1/2 pathway-regulated G1-to S-phase transition
( Yi Dong Wang ),( Guo Hui Bian ),( Xiao Yan Lv ),( Rong Zheng ),( Huan Sun ),( Zheng Zhang ),( Ye Chen ),( Qin Wei Li ),( Yan Xiao ),( Qiu Tan Yang ),( Jian Zhong Ai ),( Yu Quan Wei ),( Qin Zhou ) 생화학분자생물학회 2008 BMB Reports Vol.41 No.10
( He Nan Li ),( Xiao Huan Guo ),( Lu Ning Shao ),( Markus Plate ),( Xiao Ning Mo ),( Yu Wang ),( Wen Ling Han ) 한국생화학분자생물학회 (구 한국생화학회) 2010 BMB Reports Vol.43 No.3
The CKLF-like MARVEL transmembrane domain-containing family (CMTM) is a novel family of proteins linking classical chemokines and the transmembrane 4 superfamily (TM4SF). Our earlier studies indicated several CMTM members (such as CKLF1 and CMTM2) have a secreted form. This is the first report of the secreted form of CMTM5-v1, the major RNA splicing form of CMTM5, which is produced as small vesicles (<100 nm diameter) and floats at a peak density of 1.19 g/ml on continuous sucrose gradients. CMTM5-v1 has no obvious co-localization with CD63 or Golgi complex. In addition, brefeldin A but not wortmannin can inhibit the secretion of CMTM5-v1. Our results suggest that CMTM5-v1 might be secreted via a different vesicle-mediated secretory pathway, which will be helpful for the studies of vesicle-mediated secretion and MARVEL domain-containing proteins. [BMB reports 2010; 43(3): 182-187]