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pcDNA3.1(+)

pcDNA3.1(+)的相关文献在2000年到2020年内共计87篇,主要集中在基础医学、分子生物学、肿瘤学 等领域,其中期刊论文87篇、专利文献23篇;相关期刊72种,包括实验技术与管理、中华微生物学和免疫学杂志、中国人兽共患病学报等; pcDNA3.1(+)的相关文献由341位作者贡献,包括师永霞、李凌、李德良等。

pcDNA3.1(+)—发文量

期刊论文>

论文:87 占比:79.09%

专利文献>

论文:23 占比:20.91%

总计:110篇

pcDNA3.1(+)—发文趋势图

pcDNA3.1(+)

-研究学者

  • 师永霞
  • 李凌
  • 李德良
  • 胡安根
  • 郑文岭
  • 马文丽
  • 张卫东
  • 朱云娟
  • 李兰英
  • 李明远
  • 期刊论文
  • 专利文献

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    • 丁旭; 郭佳琦; 张嘉琪; 解宇浩; 徐连秀; 狄文慧; 聂文营; 郝峰
    • 摘要: 目的研究使用脂质体转染时目的基因大小对转染效率影响。方法将大小差异显著的目的基因连接到同一载体,脂质体转染法分别将上述两种目的基因转染至FRT细胞,转染完成24 h后,应用倒置荧光显微镜和流式细胞仪分析转染效率,检测目的基因的大小对转染效率的影响。结果转染效率均随着脂质体用量增加而上升,无论脂质体浓度如何选择,两种真核表达载体的转染效率均有显著性差异,且目的基因越大,转染效率越低。结论目的基因与转染效率成反比。
    • 孟倩; 雷婷; 张曼
    • 摘要: 目的 构建pcDNA3.1(+)-NPM1真核表达质粒,体外转染人膀胱移行细胞癌pumc-91细胞并观察其表达情况.方法 设计引物,采用PCR扩增核仁磷蛋白1(Nucleophosmin,npm1)基因编码序列;运用基因重组方法对其进行双酶切,插入pcDNA3.1(+)载体,经菌液PCR、测序对重组质粒进行鉴定.将成功构建的质粒经脂质体介导转染至pumc-91细胞,Western blot验证蛋白表达情况.结果 经菌液PCR、测序鉴定表明成功构建pcDNA3.1(+)-NPM1质粒,将成功构建的质粒转染至pumc-91细胞,Western blot证实转染pcDNA3.1(+)-NPM1表达质粒的pumc-91细胞npm1蛋白过表达.结论 成功构建pcDNA3.1(+)-NPM1重组质粒,为进一步研究NPM1蛋白的功能奠定基础.%Objective To construct the Eukaryotic expression plasmids pcDNA3.1 (+)-NPM1,then transfect human bladder cancer pumc-91 cells in vitro,and observe its proteinexpression condition.Methods Nucleophosmin (Npm1)primers were designed,and the gene was amplified by using PCR.The produced Npm1 gene was double enzyme digested and then was inserted into pcDNA3.1 (+) vectorby using the gene recombination technology.Recombined plasmid was identified with bacterial PCR and following sequencing.The successful construction of pcDNA3.1 (+)-NPMlwas transfected into pumc-91 cells.Western blot was used to confirm its over-expression.Results The results of bacterial PCR and sequencing revealed that the recombinant plasmid pcDNA3.1 (+)-NPM1 were successfully constructed.After transfecting pumc-91 cells with pcDNA3.1 (+)-NPM1,western blot results showed the upregulated npm1 protein levels.Conclusion The Eukaryotic expression plasmids pcDNA3.1 (+)-NPM1 was constructed and expressed in pumc-91cells with promising successfully rate,which developesthe good foundation for future research on biological function of NPM1 protein.
    • 李奇萌; 林国南
    • 摘要: 目的 探讨Hint2基因过表达质粒的构建及其对肝癌细胞BEL-7402迁移的影响.方法 根据Hint2基因设计引物,扩增Hint2基因全长并以pcDNA3.1(+)为载体构建Hint2过表达质粒.转染BEL-7402细胞提取mRNA和总蛋白,分别使用Real-time PCR和Western blot检测转染细胞Hint2 mRNA和蛋白质表达的变化,应用免疫荧光染色法对细胞中Hint2蛋白与细胞线粒体进行共定位.使用划痕愈合实验检测Hint2过表达后对肝癌细胞BEL-7402迁移能力的影响.结果 转染Hint2过表达质粒细胞的Hint2 mRNA和蛋白表达显著上调,免疫荧光染色表明过表达的Hint2蛋白定位于线粒体.划痕愈合实验表明Hint2过表达质粒使肝癌细胞BEL-7402迁移速率显著降低.结论 Hint2过表达质粒能够上调BEL-7402细胞中Hint2 mRNA和蛋白质的表达水平,表达的蛋白定位于细胞线粒体并抑制肝癌细胞的迁移.
    • 赵萌; 邵婷如; 吕晓智
    • 摘要: Objective To construct and identifythe eukaryotic expression plasmids containing wild -type FAPαand its mutants .Methods The wFAPαsequence and tFAPαsequence obtained by RT -PCR amplification using a high fidelity gene expression profiling strategy mediated by Pfu proofreading polymerases , were cloned into the eukaryotic ex-pression vector pcDNA3.1(+).The mFAPαwas obtained by overlap PCR using the pcDNA -wFAPαas template and cloned into the same vector .Results The construction of pcDNA-wFAPα, pcDNA-tFAPαand pcDNA-mFAPαwas confirmed by enzyme digestion and DNA sequencing .Conclusion The eukaryotic expression plasmids have been con-structed successfully , which lays important foundation for the future research on the molecular mechanism of FAP αin oral squamous cell carcinoma carcinogenesis .%目的:构建并鉴定人成纤维细胞激活蛋白( FAPα)真核表达质粒pcDNA-wFAPα(野生型FAPα)、pcDNA-tFAPα(胞外段FAPα)和pcDNA-mFAPα(缺失624~704位氨基酸的突变型FAPα)。方法以口腔癌组织总RNA为模板,采用RT-PCR方法扩增wFAPαcDNA基因片段,连接至真核表达质粒pcDNA3.1(+)获得重组pcDNA-wFAPα质粒。以重组 pcDNA -wFAPα为模板,扩增 tFAPα基因片段;用 overlap PCR 技术,获得mFAPα基因;分别连接至pcDNA3.1(+)获得重组pcDNA-tFAPα和pcDNA-mFAPα质粒。结果酶切鉴定和测序验证皆显示pcDNA-wFAPα、pcDNA-tFAPα和pcDNA-mFAPα为正确重组质粒。结论成功构建人野生型FAPα( wFAPα)、胞外段FAPα( tFAPα)和突变型FAPα( mFAPα)真核表达质粒,为进一步研究FAPα在口腔鳞癌发病过程中的分子机制奠定基础。
    • 白春英; 史铁伟; 瑞云; 李天柱
    • 摘要: 基因表达载体的构建是进一步研究相应基因功能的基础。该文详细地介绍了人5-脂氧合酶基因真核细胞表达载体的设计理念和构建方法,并通过转染、western blotting等方法鉴定了该载体在HEK293T细胞中的表达。%Ideas and constructing methods of human 5-Lipoxygenase eukaryotic expression vectors sre presented and the expression of 5-Lipoxygenase in HEK293T cells by transfection and western blotting analysis is identified.
    • 何火聪; 苏颖; 林可焴; 邹长棪; 陈超
    • 摘要: ABSTRACT:OBJECTIVE To construct eukaryon expression vector for pcDNA 3.1-Annexin A2.METHODS Total RNA was extracted from nasopharyngeal carcinoma CNE-2 cells.The target gene Annexin A2 was amplified By RT-PCR.After KpnⅠand XbaⅠdouble digestion ,Annexin A2 was connected to eukaryotic Expression Vector pcD-NA3.1(+) by T4 DNA ligase and to construct the prokaryotic Expression plasmid pcDNA 3.1-Annexin A2,which was transformed into DH5α.The positive recombinants were identified by double digestion with restriction endonucle-ase KpnⅠ and XbaⅠ,PCR amplification and DNA sequencing.RESULTS A 1020bp fragment of the same size was obtained after recombinant plasmid pcDNA 3.1-Annexin A2 by PCR amplification and KpnⅠand XbaⅠdouble digestion.The sequencing results consisted with the genebank.CONCLUSION The eukaryotic expression plasmid for pcDNA3.1-Annexin A2 was successfully constructed.%目的:构建含Annexin A2目的基因的重组表达质粒。方法从鼻咽癌CNE-2细胞提取总RNA,RT-PCR扩增目的基因片段,经KpnⅠ和XbaⅠ双酶切后与pcDNA3.1(+)真核表达载体连接,构建真核表达载体pcDNA3.1-Annexin A2,转化DH5α,筛选阳性重组子,抽质粒进行 KpnⅠ and XbaⅠ双酶切、PCR和测序鉴定。结果重组质粒经PCR和酶切后都获得与RT-PCR大小相同的产物,长度约为1020bP,测序结果与基因库一致。结论成功构建重组真核表达质粒pcDNA3.1-Annexin A2。
    • 钟一鸣; 钟华平; 李法权; 曾石秀; 廖伟
    • 摘要: 目的:观察FKHRL1三倍突变体(FKHRL1-TM)对球囊损伤后培养的血管平滑肌细胞(VSMCs)增殖的影响.方法:以VSMCs总RNA为模板,RT-PCR法扩增FKHRL1基因全长编码序列,克隆入载体pcDNA3.1后,通过基因定点突变试剂盒对FKHRL1基因三个位点进行点突变,获得重组质粒pcDNA3.1-FKHRL1-TM,然后将该重组质粒转染VSMCs细胞,RT-PCR法检测FKHRL1-TM基因在该细胞中的表达变化,并通过MTT、流式实验,检测其对VSMCs增殖的影响.结果:成功构建了重组质粒pcDNA3.1-FKHRL1-TM.重组质粒转染组FKHRL1基因表达量明显多于未转染组.MTT、流式实验结果表明,表达的FKHRL1可抑制平滑肌细胞的增殖(P<0.05).结论:FKHRL1转录囚子在平滑肌细胞中表达增加和转录活性增强后,可以抑制平滑肌细胞的过度增殖.
    • 姜彬
    • 摘要: 目的:构建microRNA的表达载体,再转染生物体细胞观察该microRNA的转录或表达情况,以获知它的作用机理及对生物体的影响。方法:以microRNA-21(简化为miR-21)为例说明构建表达载体的方法。根据microRNA的成熟序列以及附近约200多碱基共约470个碱基序列,设计PCR引物,PCR扩增,PCR产物和pcDNA3.1(+)质粒双酶切后,用T4连接酶进行连接反应,并转化入感受态细胞,筛选后对重组质粒进行双酶切、琼脂糖凝胶电泳鉴定及测序分析,并将其转染 Hela细胞,经 RT-PCR实验检测其表达情况。结果:pcDNA3.1(+)/miR-21过表达载体转染细胞后使得miR-21在细胞中过表达。结论:成功构建了miR-21的真核表达载体,为进一步研究miR-21功能及作用机制奠定实验基础。%This article introduces how to construct miRNA-21 overexpression vector and transfect it into cell ( Hela). Then the level of expression of miR-21 was observed. The miR-21 precursor is amplified by PCR method ,then the recombinant vector pcDNA3.1 (+ ) and miR-21 are constructed. After screening and identifying the recombinant ,it is transfected into cancer cells (Hela).The miR-21 expressing level is detected by RT-PCR.The result shows that the level of the miR-21 expression increases significantly in the cells that are transfected the recombinant. The miR-21 overexpression vector is successfully constructed ,and a foundation for studying the function of miR-21 is established .
    • 先俊; 邱娴; 张安兵; 李理; 黄文杰
    • 摘要: 目的:构建并鉴定真核表达质粒PcDNA3.1-CSRP2-HA.方法:据GeneBank 中人CSRP2 CDS序列设计并合成引物,提取A549细胞总RNA,并将其逆转录成cDNA作为模板,进行PCR扩增,获得CSRP2目的基因后,再与PcDNA3.1-HA载体进行连接重组,构建PcDNA3.1-CSRP2-HA真核表达质粒,经限制性内切酶消化、PCR及DNA序列测序分析等方法鉴定后,瞬时转染入A549细胞,Western blot法检验CRP2蛋白表达.结果:成功构建PcDNA3.1-CSRP2-HA真核表达质粒,Western-blot结果显示PcDNA3.1-CSRP2-HA能够在A549细胞中表达.结论:PcDNA3.1-CSRP2-HA真核表达质粒构建并鉴定成功,为后续研究CRP2在炎症诱发氧化损伤机制中的转录调控作用奠定了基础.
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