Phytohormone abscisic acid (ABA) was critical for many plant growth and developmental processesincluding seed maturation, germination and response to environmental factors. With the purpose to detectthe possible ABA r...Phytohormone abscisic acid (ABA) was critical for many plant growth and developmental processesincluding seed maturation, germination and response to environmental factors. With the purpose to detectthe possible ABA related signal transduction pathways, we tried to isolate ABA-regulated genes throughcDNA macroarray technology using ABA-treated rice seedling as materials (under treatment for 2, 4, 8 and12 h). Of 6144 cDNA clones tested, 37 differential clones showing induction or suppression for at least onetime, were isolated. Of them 30 and 7 were up- or down-regulated respectively. Sequence analyses revealedthat the putative encoded proteins were involved in different possible processes, including transcription,metabolism and resistance, photosynthesis, signal transduction, and seed maturation. 6 cDNA clones werefound to encode proteins with unknown functions. Regulation by ABA of 7 selected clones relating to signaltransduction or metabolism was confirmed by reverse transcription PCR. In addition, some clones werefurther shown to be regulated by other plant growth regulators including auxin and brassinosteroid, which,however, indicated the complicated interactions of plant hormones. Possible signal transduction pathwaysinvolved in ABA were discussed.展开更多
目的评价成人接种乙肝基因疫苗后的免疫效果。方法文献检索符合本研究分析条件的成人乙肝基因疫苗接种免疫效果论文10篇,5篇为实验对照研究,5篇为平行对照研究,用抗HBs的转阳率作为效果指标;采用Meta分析中的固定效应模型(General Varia...目的评价成人接种乙肝基因疫苗后的免疫效果。方法文献检索符合本研究分析条件的成人乙肝基因疫苗接种免疫效果论文10篇,5篇为实验对照研究,5篇为平行对照研究,用抗HBs的转阳率作为效果指标;采用Meta分析中的固定效应模型(General Variance-Based法)和随机效应模型(Der Si monian and Laird法)统计方法进行分析。结果实验对照研究论文经Meta分析,公共OR的估计值为2·842,95%的可信区间为(1·329,4·354),实验组和对照组的抗HBs转阳率差别有统计学意义;平行对照研究论文经Meta分析,公共OR的Mantel-Haeszel估计值为0·6592,相应的95%的可信区间为(0·5435,0·7994),男性组和女性组的抗HBs转阳率差别有统计学意义。结论成人接种乙肝基因疫苗的免疫仍有较好效果,加强对中青年人群的乙肝疫苗接种宣传,控制人群HBsAg感染率。展开更多
To construct the eukaryot ic expression system of E1 glycopr otein of rubella virus(RV)JR23 str ain and to study the biological an d immunological properties of the expressed product,the E1 gene was amplified by RT-PC...To construct the eukaryot ic expression system of E1 glycopr otein of rubella virus(RV)JR23 str ain and to study the biological an d immunological properties of the expressed product,the E1 gene was amplified by RT-PCR,sequenced and recombinated with the pBluescript ⅡSK+ vectorThe recombinated vecto r was co-transfected into BHK21 ce ll with vaccinia virus which carri es the gene of T7 RNA polymeraseT he expressed protein was characteri zed with hemadsorption,immunohisto chemistry and indirect immunofluor escence stainingThe results showe d that the recombinated vector,pBS K+-RV E1,was proved containing E1 gene by enzyme digestion and seque ncingThe expressed protein could be detected both in cytoplasm amd on membrane of the transfected cel ls by hemadsorption,immunohistoche mistry and indirect immunofluoresc enceThe E1 protein mainly focused in cytoplasm near the nucleusThes e data proved that the expression vector,pBSK+-RV E1,was successfull y constructed and the glycoprotein E1 of RV JR23 strain was effective ly expressed in BHK21 cell culture This study provides foundations f or studies on the relationships be tween structure and function of RV gene,between structure and functio n of RV proteins,and on the subuni t vaccine of rubella展开更多
基金Researches were supported by "the State Key Project of Basic Research, G1999011604" "Key Project of Knowledge Innovation, CAS", "the National Natural Science Foundation of China, No.30070073" "National Sciences Foundation of Pan-Deng". We thank Prof.
文摘Phytohormone abscisic acid (ABA) was critical for many plant growth and developmental processesincluding seed maturation, germination and response to environmental factors. With the purpose to detectthe possible ABA related signal transduction pathways, we tried to isolate ABA-regulated genes throughcDNA macroarray technology using ABA-treated rice seedling as materials (under treatment for 2, 4, 8 and12 h). Of 6144 cDNA clones tested, 37 differential clones showing induction or suppression for at least onetime, were isolated. Of them 30 and 7 were up- or down-regulated respectively. Sequence analyses revealedthat the putative encoded proteins were involved in different possible processes, including transcription,metabolism and resistance, photosynthesis, signal transduction, and seed maturation. 6 cDNA clones werefound to encode proteins with unknown functions. Regulation by ABA of 7 selected clones relating to signaltransduction or metabolism was confirmed by reverse transcription PCR. In addition, some clones werefurther shown to be regulated by other plant growth regulators including auxin and brassinosteroid, which,however, indicated the complicated interactions of plant hormones. Possible signal transduction pathwaysinvolved in ABA were discussed.
文摘目的评价成人接种乙肝基因疫苗后的免疫效果。方法文献检索符合本研究分析条件的成人乙肝基因疫苗接种免疫效果论文10篇,5篇为实验对照研究,5篇为平行对照研究,用抗HBs的转阳率作为效果指标;采用Meta分析中的固定效应模型(General Variance-Based法)和随机效应模型(Der Si monian and Laird法)统计方法进行分析。结果实验对照研究论文经Meta分析,公共OR的估计值为2·842,95%的可信区间为(1·329,4·354),实验组和对照组的抗HBs转阳率差别有统计学意义;平行对照研究论文经Meta分析,公共OR的Mantel-Haeszel估计值为0·6592,相应的95%的可信区间为(0·5435,0·7994),男性组和女性组的抗HBs转阳率差别有统计学意义。结论成人接种乙肝基因疫苗的免疫仍有较好效果,加强对中青年人群的乙肝疫苗接种宣传,控制人群HBsAg感染率。
文摘To construct the eukaryot ic expression system of E1 glycopr otein of rubella virus(RV)JR23 str ain and to study the biological an d immunological properties of the expressed product,the E1 gene was amplified by RT-PCR,sequenced and recombinated with the pBluescript ⅡSK+ vectorThe recombinated vecto r was co-transfected into BHK21 ce ll with vaccinia virus which carri es the gene of T7 RNA polymeraseT he expressed protein was characteri zed with hemadsorption,immunohisto chemistry and indirect immunofluor escence stainingThe results showe d that the recombinated vector,pBS K+-RV E1,was proved containing E1 gene by enzyme digestion and seque ncingThe expressed protein could be detected both in cytoplasm amd on membrane of the transfected cel ls by hemadsorption,immunohistoche mistry and indirect immunofluoresc enceThe E1 protein mainly focused in cytoplasm near the nucleusThes e data proved that the expression vector,pBSK+-RV E1,was successfull y constructed and the glycoprotein E1 of RV JR23 strain was effective ly expressed in BHK21 cell culture This study provides foundations f or studies on the relationships be tween structure and function of RV gene,between structure and functio n of RV proteins,and on the subuni t vaccine of rubella
