趋化抑制蛋白(Chemotaxis Inhibitory Protein ofStaphylococcus aureus,CHIPS)是由金黄色葡萄球菌分泌到菌体外的一种蛋白。在感染早期,它能特异性地与中性粒细胞和单核细胞上的C5a受体(C5aR)和fMLP受体(FPR)结合,从而阻止中性粒细胞...趋化抑制蛋白(Chemotaxis Inhibitory Protein ofStaphylococcus aureus,CHIPS)是由金黄色葡萄球菌分泌到菌体外的一种蛋白。在感染早期,它能特异性地与中性粒细胞和单核细胞上的C5a受体(C5aR)和fMLP受体(FPR)结合,从而阻止中性粒细胞和单核细胞对C5a和fMLP的结合作用,导致对病原吞噬作用的延迟。人们可以利用CHIPS对C5a-C5aR的阻止作用来研制治疗由C5a诱发的炎症性疾病的药物。将CHIPS作为免疫原防治疾病也将成为新的研究课题。实验成功构建了CHIPS蛋白的原核表达系统,为CHIPS免疫原性研究及蛋白的其他功能研究奠定了基础。展开更多
本研究旨在建立可稳定高效表达E3泛素连接酶CHIP(carboxyl terminus of Hsc70/Hsp70-interactingprotein)的慢性髓系白血病细胞株K562细胞模型,以观察过表达CHIP对细胞生物学特性的影响。采用脂质体介导的方法,经G418筛选及有限稀释法...本研究旨在建立可稳定高效表达E3泛素连接酶CHIP(carboxyl terminus of Hsc70/Hsp70-interactingprotein)的慢性髓系白血病细胞株K562细胞模型,以观察过表达CHIP对细胞生物学特性的影响。采用脂质体介导的方法,经G418筛选及有限稀释法成功建立了可稳定表达野生型CHIP及其TPR及U-box结构域缺失突变体的慢性髓系白血病K562细胞克隆。对过表达CHIP的K562细胞用MTT法检测体外增殖,流式细胞术检测细胞周期,Western blot法检测相关蛋白表达,瑞氏-姬姆萨染色进行细胞形态学观测。结果表明,过表达野生型CHIP对K562细胞体外增殖能力没有明显影响,细胞周期中G2/M期细胞比率增加,CHIP对BCR-ABL激酶的稳定性没有影响,但却明显导致细胞形态异常,表现为细胞体积增大及异常核细胞数目增多,出现异常有丝分裂相等,提示CHIP分子对细胞有丝分裂过程可能具有调控作用。结论:野生型CHIP可诱导K562细胞发生有丝分裂异常。展开更多
ObjectiveTo investigate the gene expression changes in normal and degeneration lumbar intervertebral disc in humans, providing information for clinical. MethodsThe PCR products of 4096 human genes were spotted onto a ...ObjectiveTo investigate the gene expression changes in normal and degeneration lumbar intervertebral disc in humans, providing information for clinical. MethodsThe PCR products of 4096 human genes were spotted onto a kind of chemical-material-coated-glass slides. The total RNAs were isolated from the tissues. Both the mRNAs from the degeneration and normal lumbar intervertebral disc in humans were reversely transcribed to the cDNAs, which used as the hybridization probes with the incorporations of fluorescent dUTP. The mixed probes were then hybridized to the cDNA microarray. After high-stringent washing, the cDNA microarray was scanned for the fluorescent signals and analyzed with computer image analysis. ResultsAmong the 4096 targets, there were 706 genes whose expression levels differed between the degeneration and normal lumbar intervertebral disc in all cases, comprising 298 up-regulated and 358 down-regulated ones. ConclusionDNA microarray technology is an effective technique in screening for differently expressed genes between the degeneration and normal lumbar intervertebral disc. Cell apoptosis plays an important role in the process of lumbar intervertebral disc degeneration.展开更多
The paper presented an implement method for a dynamic gene expression display software based on the GTK. This method established the dynamic presentation system of gene expression which according to gene expression da...The paper presented an implement method for a dynamic gene expression display software based on the GTK. This method established the dynamic presentation system of gene expression which according to gene expression data from gene chip hybridize at different time, adopted a linearity combination model and Pearson correlation coefficient algorithm. The system described the gene expression changes in graphic form, the gene expression changes with time and the changes in characteristics of the gene expression, also the changes in relations of the gene expression and regulation relationships among genes. The system also provided an integrated platform for analysis on gene chips data, especially for the research on the network ofgene regulation.展开更多
Objective and Methods Lung cancer has a fastest growing rate of morbidity and mortality among malignant tumors and poses a great threat to the human health. Chemotherapy, as one
The genome of common varieties of tea plant,with estimated size 4000 Mb,is not clearly yet.In order to understand the gene expression difference during certain biological process,we can use transcriptome which reflect...The genome of common varieties of tea plant,with estimated size 4000 Mb,is not clearly yet.In order to understand the gene expression difference during certain biological process,we can use transcriptome which reflects the gene expression level and is more closely related to current status instead of genome.This paper reviews several widely used techniques to screen differentially expressed genes in transcriptome level by comparing the characteristics of the methods and their application in tea plant research.展开更多
文摘趋化抑制蛋白(Chemotaxis Inhibitory Protein ofStaphylococcus aureus,CHIPS)是由金黄色葡萄球菌分泌到菌体外的一种蛋白。在感染早期,它能特异性地与中性粒细胞和单核细胞上的C5a受体(C5aR)和fMLP受体(FPR)结合,从而阻止中性粒细胞和单核细胞对C5a和fMLP的结合作用,导致对病原吞噬作用的延迟。人们可以利用CHIPS对C5a-C5aR的阻止作用来研制治疗由C5a诱发的炎症性疾病的药物。将CHIPS作为免疫原防治疾病也将成为新的研究课题。实验成功构建了CHIPS蛋白的原核表达系统,为CHIPS免疫原性研究及蛋白的其他功能研究奠定了基础。
文摘本研究旨在建立可稳定高效表达E3泛素连接酶CHIP(carboxyl terminus of Hsc70/Hsp70-interactingprotein)的慢性髓系白血病细胞株K562细胞模型,以观察过表达CHIP对细胞生物学特性的影响。采用脂质体介导的方法,经G418筛选及有限稀释法成功建立了可稳定表达野生型CHIP及其TPR及U-box结构域缺失突变体的慢性髓系白血病K562细胞克隆。对过表达CHIP的K562细胞用MTT法检测体外增殖,流式细胞术检测细胞周期,Western blot法检测相关蛋白表达,瑞氏-姬姆萨染色进行细胞形态学观测。结果表明,过表达野生型CHIP对K562细胞体外增殖能力没有明显影响,细胞周期中G2/M期细胞比率增加,CHIP对BCR-ABL激酶的稳定性没有影响,但却明显导致细胞形态异常,表现为细胞体积增大及异常核细胞数目增多,出现异常有丝分裂相等,提示CHIP分子对细胞有丝分裂过程可能具有调控作用。结论:野生型CHIP可诱导K562细胞发生有丝分裂异常。
文摘ObjectiveTo investigate the gene expression changes in normal and degeneration lumbar intervertebral disc in humans, providing information for clinical. MethodsThe PCR products of 4096 human genes were spotted onto a kind of chemical-material-coated-glass slides. The total RNAs were isolated from the tissues. Both the mRNAs from the degeneration and normal lumbar intervertebral disc in humans were reversely transcribed to the cDNAs, which used as the hybridization probes with the incorporations of fluorescent dUTP. The mixed probes were then hybridized to the cDNA microarray. After high-stringent washing, the cDNA microarray was scanned for the fluorescent signals and analyzed with computer image analysis. ResultsAmong the 4096 targets, there were 706 genes whose expression levels differed between the degeneration and normal lumbar intervertebral disc in all cases, comprising 298 up-regulated and 358 down-regulated ones. ConclusionDNA microarray technology is an effective technique in screening for differently expressed genes between the degeneration and normal lumbar intervertebral disc. Cell apoptosis plays an important role in the process of lumbar intervertebral disc degeneration.
基金Supported by National Basic Research Program of China （973 Program） （2005CB321902） National Natural Science Foundation of China （90916024,60727002,60774003）+1 种基金 the Ph.D. Programs Foundation of Ministry of Education of China （20030006003） the Commission on Science,Technology,and Industry for National Defense （A2120061303）
文摘The paper presented an implement method for a dynamic gene expression display software based on the GTK. This method established the dynamic presentation system of gene expression which according to gene expression data from gene chip hybridize at different time, adopted a linearity combination model and Pearson correlation coefficient algorithm. The system described the gene expression changes in graphic form, the gene expression changes with time and the changes in characteristics of the gene expression, also the changes in relations of the gene expression and regulation relationships among genes. The system also provided an integrated platform for analysis on gene chips data, especially for the research on the network ofgene regulation.
基金supported by the grants from the Key Project of National Natural Science Foundation of China (No.30430300 , to Qinghua ZHOU)Key Projects of Tianjin Sci-Tech Support Program (No. 07SYSYSF05000 and No. 06YF-SZSF05300, to Qinghua ZHOU)
文摘Objective and Methods Lung cancer has a fastest growing rate of morbidity and mortality among malignant tumors and poses a great threat to the human health. Chemotherapy, as one
基金financially supported by the National Science Foundation of China (Project No.31170643)
文摘The genome of common varieties of tea plant,with estimated size 4000 Mb,is not clearly yet.In order to understand the gene expression difference during certain biological process,we can use transcriptome which reflects the gene expression level and is more closely related to current status instead of genome.This paper reviews several widely used techniques to screen differentially expressed genes in transcriptome level by comparing the characteristics of the methods and their application in tea plant research.
