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鸡CD4蛋白基因的克隆及其mRNA在淋巴器官中的表达 被引量:2
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作者 刘胜旺 孔宪刚 +3 位作者 丁忠庆 刘永刚 童光志 马云燕 《中国兽医学报》 CAS CSCD 北大核心 2001年第5期482-484,共3页
从鸡胸腺、脾脏、哈德氏腺、外周血液和法氏囊等免疫器官中分离淋巴细胞 ,应用 RT-PCR对这些免疫器官中鸡 CD4分子 m RNA的表达进行了研究。同时 ,用 RT-PCR对鸡脾淋巴细胞 CD4分子 c DNA进行了克隆和序列测定。结果表明 ,在上述器官中 ... 从鸡胸腺、脾脏、哈德氏腺、外周血液和法氏囊等免疫器官中分离淋巴细胞 ,应用 RT-PCR对这些免疫器官中鸡 CD4分子 m RNA的表达进行了研究。同时 ,用 RT-PCR对鸡脾淋巴细胞 CD4分子 c DNA进行了克隆和序列测定。结果表明 ,在上述器官中 ,法氏囊淋巴细胞不表达鸡 CD4分子 m RNA,其他器官中均有表达。通过序列分析表明 ,本试验扩增得到的基因为编码鸡 展开更多
关键词 CD4基因 克隆mrna 淋巴器官 表达
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金鱼蛋白磷酸酶2A-B″家族Alpha和Gamma调节基因的cDNA克隆及mRNA表达 被引量:6
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作者 郑春兵 马海立 +5 位作者 付虎 陈合格 刘文彬 肖亚梅 刘筠 李万程 《自然科学进展》 北大核心 2009年第3期272-278,共7页
以金鱼卵巢组织作为材料,运用RT—PCR和cDNA末端快速扩增(RACE)技术克隆得到蛋白磷酸酶2A(PP2A)调节亚基B″家族中γ基因(G5PR)cDNA全序列和α基因(PR130)cDNA部分序列.结果显示γ基因cDNA全长1885bp,编码一个含457个氨基酸的蛋白质.而... 以金鱼卵巢组织作为材料,运用RT—PCR和cDNA末端快速扩增(RACE)技术克隆得到蛋白磷酸酶2A(PP2A)调节亚基B″家族中γ基因(G5PR)cDNA全序列和α基因(PR130)cDNA部分序列.结果显示γ基因cDNA全长1885bp,编码一个含457个氨基酸的蛋白质.而α基因cDNA长1781bp,编码的多肽共含426个氨基酸,系α亚基的部分蛋白序列.它们与已知其他物种对应的B″家族蛋白质均有着很高的同源性.结构预测分析发现,α和γ两条多肽均存在PP2A调节亚基B″家族成员共有的两个EF-HAND结构域.用RT-PCR的方法检测了这两个基因在金鱼不同组织和胚胎发育不同时期的mRNA表达水平.结果表明,γ亚基在金鱼多种组织和各个胚胎发育时期中均有较高表达且表达量比较平均,仅在卵巢和精巢组织中最为丰富.与γ亚基表达模式相比,α亚基表达呈现明显的组织和胚胎发育阶段差异性,在卵巢和肌肉组织中最高,在肾脏和鳃中最低,在原肠胚、神经胚、脑泡分化和体色素等胚胎发育时期的表达较弱,而在其他时期中的表达较强.据此,推测α、γ两调节亚基可能在金鱼不同组织和胚胎发育过程中起着特定的作用.此外,进一步的分析发现,α基因除参与PP2A全酶功能外还可能具有独立的功能. 展开更多
关键词 PP2A-B"α PP2A-B"γ cDNA克隆序列分析mrna表达
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家鸭GHSR基因部分编码序列的克隆及变异检测 被引量:2
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作者 詹凯 许月英 赵瑞宏 《中国畜牧兽医》 CAS 2008年第6期34-36,共3页
作者旨在克隆鸭GHSR基因mRNA部分编码区序列,并筛查克隆序列中的变异位点。采用RT-PCR法从巢湖鸭下丘脑组织中分离家鸭GHSR基因mRNA中编码区核酸序列,并选用30个个体cDNA,通过构建cDNA池对克隆编码区的序列变异测序检测。结果表明,克隆... 作者旨在克隆鸭GHSR基因mRNA部分编码区序列,并筛查克隆序列中的变异位点。采用RT-PCR法从巢湖鸭下丘脑组织中分离家鸭GHSR基因mRNA中编码区核酸序列,并选用30个个体cDNA,通过构建cDNA池对克隆编码区的序列变异测序检测。结果表明,克隆鸭GHSR基因mRNA部分编码区核酸序列长635 bp(GenBank登录号:EU005225),编码211个氨基酸,与鸡GHSR基因同源核酸相似性达到94%,氨基酸相似性为97%;cDNA池测序检测揭示克隆区段存在3个碱基变异位点,均为同义突变,未使编码氨基酸发生改变。克隆鸭GHSR基因mRNA编码区核酸、氨基酸序列与鸡同源序列的相似性,以及克隆核酸序列的变异检测结果表明,鸭GHSR基因在序列和功能上具有很高的保守性。 展开更多
关键词 GHSR mrna克隆 cDNA池 变异
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Cloning of the cDNA encoding adenosine 5'-monophosphate deaminase 1 and its mRNA expression in Japanese flounder Paralichthys olivaceus 被引量:1
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作者 蒋克勇 孙姝娟 +3 位作者 刘梅 王宝杰 孟晓林 王雷 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2013年第1期118-127,共10页
AMP deaminase catalyzes the conversion of AMP into IMP and ammonia. In the present study, a full-length cDNA of AMPD1 from skeletal muscle of Japanese flounder Paralichthys olivaceus was cloned and characterized. The ... AMP deaminase catalyzes the conversion of AMP into IMP and ammonia. In the present study, a full-length cDNA of AMPD1 from skeletal muscle of Japanese flounder Paralichthys olivaceus was cloned and characterized. The 2 526 bp cDNA contains a 5'-UTR of 78 bp, a 3'-UTR of 237 bp and an open reading frame (ORF) of 2 211 bp, which encodes a protein of 736 amino acids. The predicted protein contains a highly conserved AMP deaminase motif (SLSTDDP) and an ATP-binding site sequence (EPLMEEYAIAAQVFK). Phylogenetic analysis showed that the AMPD1 and AMPD3 genes originate from the same branch, but are evolutionarily distant from the AMPD2 gene. RT-PCR showed that the flounder AMPD1 gene was expressed only in skeletal muscle. QRT-PCR analysis revealed a statistically significant 2.54 fold higher level of AMPD1 mRNA in adult muscle (750±40 g) compared with juvenile muscle (7.5±2 g) (P<0.05). HPLC analysis showed that the IMP content in adult muscle (3.35±0.21 mg/g) was also statistically significantly higher than in juvenile muscle (1.08±0.04 mg/g) (P<0.05). There is a direct relationship between the AMPD1 gene expression level and IMP content in the skeletal muscle of juvenile and adult flounders. These results may provide useful information for quality improvement and molecular breeding of aquatic animals. 展开更多
关键词 AMPD1 cDNA cloning mrna expression IMP skeletal muscle Japanese flounder
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Cloning of human brevican cDNA and expression of its mRNA in human glioma
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作者 韩晞 董艳 +2 位作者 由振东 何成 卢亦成 《Journal of Medical Colleges of PLA(China)》 CAS 2003年第6期388-392,共5页
Objective: To clone the cDNA of human brevican secreting isoform and to investigate its mRNA expression in human glioma. Methods: The full-length cDNA of human brevican secreted isoform was cloned from a human anaplas... Objective: To clone the cDNA of human brevican secreting isoform and to investigate its mRNA expression in human glioma. Methods: The full-length cDNA of human brevican secreted isoform was cloned from a human anaplastic astrocytoma by RT-PCR, and the expression of human brevican mRNA in 22 cases of human glioma and 13 cases of non-glial brain tumors were investigated by in situ hybridization. Results: The cDNA which including the whole open reading frame of human brevican secreted isoform was obtained. In situ hybridization showed that brevican positive cells were present in all of the 22 cases of gliomas (100%), whereas none were found in the 13 cases of non-glial and metastasis brain tumors examined. Conclusion: The results suggest that brevican mRNA is highly and specifically expressed in human glioma. 展开更多
关键词 BREVICAN RT-PCR in situ hybridization GLIOMA
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Molecular cloning and mRNA expression analysis of myosin heavy chain(MyHC)from fast skeletal muscle of grass carp,Ctenopharyngodon idella 被引量:5
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作者 褚武英 符贵红 +6 位作者 宾石玉 蒙涛 周瑞雪 成嘉 赵发兰 张红芳 张建社 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2010年第2期239-247,共9页
The myosin heavy chain(MyHC)is one of the major structural and contracting proteins of muscle.We have isolated the cDNA clone encoding MyHC of the grass carp,Ctenopharyngodon idella. The sequence comprises 5 934 bp,in... The myosin heavy chain(MyHC)is one of the major structural and contracting proteins of muscle.We have isolated the cDNA clone encoding MyHC of the grass carp,Ctenopharyngodon idella. The sequence comprises 5 934 bp,including a 5 814 bp open reading frame encoding an amino acid sequence of 1 937 residues.The deduced amino acid sequence showed 69%homology to rabbit fast skeletal MyHC and 73%–76%homology to the MyHCs from the mandarin fish,walleye pollack,white croaker,chum salmon,and carp.The putative sequences of subfragment-1 and the light meromyosin region showed 61.4%–80%homology to the corresponding regions of other fish MyHCs.The tissue-specific and developmental stage-specific expressions of the MyHC gene were analyzed by quantitative real-time PCR.The MyHC gene showed the highest expression in the muscles compared with the kidney,spleen and intestine.Developmentally,there was a gradual increase in MyHC mRNA expression from the neural formation stage to the tail bud stage.The highest expression was detected in hatching larva.Our work on the MyHC gene from the grass carp has provided useful information for fish molecular biology and fish genomics. 展开更多
关键词 grass carp real-time PCR myosin heavy chain fast skeletal muscle gene expression
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Cloning and Sequence Analysis of Adiponectin Receptor 1 and Receptor 2 cDNA from Guangxi Bama Mini-pig
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作者 冯雪萍 兰干球 +3 位作者 易顺华 易德桥 郭亚芬 李柏 《Agricultural Science & Technology》 CAS 2009年第1期81-84,110,共5页
[ Objective] To clone and analyze the sequence of Adiponectin receptor 1 ( AdipoR1 ) and receptor 2 (AdipoR2) cDNA of Guangxi Bama mini-pig. [Method] The Adiponectin receptors cDNAs were amplified by RT-PCR using ... [ Objective] To clone and analyze the sequence of Adiponectin receptor 1 ( AdipoR1 ) and receptor 2 (AdipoR2) cDNA of Guangxi Bama mini-pig. [Method] The Adiponectin receptors cDNAs were amplified by RT-PCR using skeletal muscle total RNA as template and then ligated into pMD18-T vector after purification. The recombinant pMD18-T vector was transformed into the E. coil DH5α for identification and sequencing. And the results were compared with the cDNA sequence from other species. [Result] The fragments, 1 128 bp and 1 161 bp in size, were amplified by RT-PCR and respectively consistent with the coding sequence of AdipoR1 gene and AdipoR2 gene. The homology analysis showed that the sequences of AdipoR1 gene and AdipoR2 gene were respectively 99.8% and 99.7% homologous to the sequence of domestic pig reported in GenBank with one base and three base missense mutations correspondingly. [ Conclusion] The AdipoR1 gene and AdipoR2. gene were successfully amplified from Guangxi Bama mini-pig, laying the foundation for the further study of the biological function of AdipoR genes and the design of novel drugs with AdipoR as target. 展开更多
关键词 Guangxi Bama mini-pig Adiponectin receptor CLONING
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Construction of cDNA Library from Intestine, Mesentery and Coelomocyte of Apostichopus japonicus Selenka Infected with Vibrio sp. and a Preliminary Analysis of Immunity-Related Genes 被引量:1
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作者 LIU Hongzhan ZHENG Fengrong +1 位作者 SUN Xiuqin CAI Yimei 《Journal of Ocean University of China》 SCIE CAS 2012年第2期187-196,共10页
The aquaculture of sea cucumber Apostichopus japonicus (Echinodermata, Holothuroidea) has grown rapidly during recent years and has become an important sector of the marine industry in Northern China. However, with th... The aquaculture of sea cucumber Apostichopus japonicus (Echinodermata, Holothuroidea) has grown rapidly during recent years and has become an important sector of the marine industry in Northern China. However, with the rapid growth of the industry and the use of non-standard culture techniques, epidemic diseases of A. japonicus now pose increasing problems to the industry. To screen the genes with stress response to bacterial infection in sea cucumber at a genome wide level, we constructed a cDNA library from A. japonicus Selenka (Aspidochirotida: Stichopodidae) after infecting them with Vibrio sp. for 48 h. Total RNA was extracted from the intestine, mesentery and coelomocyte of infected sea cucumber using Trizol and mRNA was isolated by Oligotex mRNA Kits. The ligated cDNAs were transformed into DH5α, and a library of 3.24×105 clones (3.24×105 cfu mL-1) was obtained with the sizes of inserted fragments ranging from 0.8 to 2.5 kb. Sequencing the cDNA clones resulted in a total of 1106 ESTs that passed the quality control. BlastX and BlastN searches have identified 168 (31.5%) ESTs sharing significant homology with known sequences in NCBI protein or nucleotide databases. Among a panel of 25 putative immunity-related genes, serum lectin isoform, complement component 3, complement component 3-like genes were further studied by real-time PCR and they all increased more than 5 fold in response to Vibrio sp. challenge. Our library provides a valuable molecular tool for future study of invertebrate immunity against bacterial infection and our gene expression data indicates the importance of the immune system in the evolution and development of sea cucumber. 展开更多
关键词 Apostichopusjaponicus cDNA library expressed sequence tags immunity-related genes real-time PCR
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Molecular cloning and expression of a heat-shock cognate 70 (hsc70) gene from swordtail fish (Xiphophorus helleri) 被引量:3
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作者 李宁求 付小哲 +3 位作者 韩进刚 石存斌 黄志斌 吴淑勤 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2013年第4期821-829,共9页
Heat shock proteins are a family of molecular chaperones that are involved in many aspects of protein homeostasis. In the present study, a full-length cDNA, encoding the constitutively expressed 70-kDa heat shock cogn... Heat shock proteins are a family of molecular chaperones that are involved in many aspects of protein homeostasis. In the present study, a full-length cDNA, encoding the constitutively expressed 70-kDa heat shock cognate protein (Hsc70), was isolated from swordtail fish (Xiphophorus helleri) and designated as XheHsc70. The Xhehsc70 cDNA was 2 104 bp long with an open reading frame of 1 941 bp, and it encoded a protein of 646 amino acids with a theoretical molecular weight of 70.77 kDa and an isoelectric point of 5.04. The deduced amino acid sequence shared 94.1%-98.6% identities with the Hsc70s from a number of other fish species. Tissue distribution results show that the Xhehsc70 mRNA was expressed in brain, heart, head kidney, kidney, spleen, liver, muscle, gill, and peripheral blood. After immunization with formalin-killed Vibrio alginolyticus cells there was a significant increase in the XhehscT0 mRNA transcriptional level in the head kidney of the vaccinated fish compared with in the control at 6, 12, 24, and 48 h as shown by quantitative real time RT-PCR. Based on an analysis of the amino acid sequence of XheHsc70, its phylogeny, and Xhehsc70 mRNA expression, XheHsc70 was identified as a member of the cytoplasmic Hsc70 (constitutive) subfamily of the Hsp70 family of heat shock proteins, suggesting that it may play a role in the immune response. The Xhehsc70 cDNA sequence reported in this study was submitted to GenBank under the accession number JF739182. 展开更多
关键词 swordtail fish Hsc70 immunity response
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Molecular cloning and function analysis of insulin-like growth factorbinding protein 1a in blunt snout bream(Megalobrama amblycephala) 被引量:1
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作者 Yu-Mei TIAN Jie CHEN +2 位作者 Yang TAO Xia-Yun JIANG Shu-Ming ZOU 《Zoological Research》 CAS CSCD 北大核心 2014年第4期300-306,共7页
Insulin-like growth factor-binding protein 1 (IGFBP-1), a hypoxia-induced protein, is a member of the IGFBP family that regulates vertebrate growth and development. In this study, full-length IGFBP-la cDNA was clone... Insulin-like growth factor-binding protein 1 (IGFBP-1), a hypoxia-induced protein, is a member of the IGFBP family that regulates vertebrate growth and development. In this study, full-length IGFBP-la cDNA was cloned from a hypoxia-sensitive Cyprinidae fish species, the blunt snout bream (Megalobrama arnblycephala). IGFBP-la was expressed in various organs of adult blunt snout bream, including strongly in the liver and weakly in the gonads. Under hypoxia, IGFBP-la mRNA levels increased sharply in the skin, liver, kidney, spleen, intestine and heart tissues of juvenile blunt snout bream, but recovered to normal levels after 24-hour exposure to normal dissolved oxygen. In blunt snout bream embryos, IGFBP-la mRNA was expressed at very low levels at both four and eight hours post-fertilization, and strongly at later stages. Embryonic growth and development rates decreased significantly in embryos injected with IGFBP-la mRNA. The average body length of IGFBP-la-overexpressed embryos was 82.4% of that of the control group, and somite numbers decreased to 85.2%. These findings suggest that hypoxia-induced IGFBP-la may inhibit growth in this species under hypoxic conditions. 展开更多
关键词 Megalobrama amblycephala IGFBP-la HYPOXIA OVEREXPRESSION
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Cloning and characterization of one putative muscle actin gene only expressed at the larval stages from brown planthopper, Nilaparvata lugens
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作者 GU Jian-hua LIU Shu-hua YAO Xiang-mei SONG Feng ZHANG Yi-xi LIU Ze-wen 《Journal of Agricultural Science and Technology》 2008年第1期1-5,共5页
An actin gene (BPH-Actin3) from the important rice pest brown planthopper, Nilaparvata lugens, was cloned and gene expression was characterized at different development stages. The gene was 1461bp with an open readi... An actin gene (BPH-Actin3) from the important rice pest brown planthopper, Nilaparvata lugens, was cloned and gene expression was characterized at different development stages. The gene was 1461bp with an open reading frame of l l31bp coding for a 376 amino acids protein, with 330 nucleotides of the 3'-untranslation region (3'-UTR). The amino acid sequence deduced from the nucleotide sequence showed higher similarities to other insect muscle actins (94-95%) than those to non-muscle actins (87-93%). The 3'-UTR contains several AU-rich elements (AREs) AUUUA/UAAAU and one extended ARE UAAAAAU, which may function in regulating mRNA decay. Northern blot and RT-PCR studies showed BPH-Actin3 expressed at brown planthopper full larval stages with the highest mRNA levels at 3rd and 4th instar stages, but not expressed at egg and adult stages. Because the 3rd and 4th instars are the key development stages for brown planthopper wing-form determination, it was thought BPH-Actin3 might play important roles in brown planthopper wing development. 展开更多
关键词 brown planthopper ACTIN BPH-Actin3 northernblot gene expression
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