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基因免疫

基因免疫的相关文献在1991年到2022年内共计297篇,主要集中在畜牧、动物医学、狩猎、蚕、蜂、基础医学、内科学 等领域,其中期刊论文238篇、会议论文26篇、专利文献128100篇;相关期刊135种,包括生物技术通报、中国病毒学、中国免疫学杂志等; 相关会议23种,包括中国畜牧兽医学会禽病学分会第十六次学术研讨会、中国畜牧兽医学会动物传染病学分会第十二次人兽共患病学术研讨会暨第六届第十四次教学专业委员会会议、第六次全国动物生物技术学术研讨会等;基因免疫的相关文献由782位作者贡献,包括杨利国、熊思东、茆达干等。

基因免疫—发文量

期刊论文>

论文:238 占比:0.19%

会议论文>

论文:26 占比:0.02%

专利文献>

论文:128100 占比:99.79%

总计:128364篇

基因免疫—发文趋势图

基因免疫

-研究学者

  • 杨利国
  • 熊思东
  • 茆达干
  • 关庆东
  • 王立新
  • 储以微
  • 徐薇
  • 王水莲
  • 邓涛
  • 王缨
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 杨帅; 胡祥维; 周迪; 张欣欣; 杨利国
    • 摘要: 试验旨在探究生长抑素(SS)和皮质抑素(CST)双表达DNA疫苗免疫杂交水牛犊牛的促生长效果及疫苗本身的安全性.将鉴定正确的pVGS/2SS-2A-S/CST-asd质粒电转入减毒猪霍乱沙门氏菌C500构建SS和CST双表达活载体疫苗,喷鼻免疫杂交水牛犊牛后观察其对犊牛生长性能的影响.选取体重相近的2~6月龄杂交水牛犊公牛24头,随机分为低(TL)、中(TM)、高(TH)剂量组和PBS对照组(NC),每组6头,初次免疫(简称初免)持续3 d,间隔2周后用相同剂量加免一次.结果显示,初免后2周便可产生抗SS和CST抗体,以TL组最佳,表现为更高的抗体水平和阳性率,7周时各试验组阳性率呈下降趋势;TL和TM组的平均日增重在初免后2和7周均高于对照组,但各组间差异均不显著(P>0.05),而抗体阳性组(P)的平均日增重在0~2周显著高于阴性组(N)(P<0.05).相关激素的检测结果显示,在初免后2和7周,试验组生长激素(GH)和胰岛素生长因子1(IGF-1)的水平均高于对照组,且以TL组表现最佳,除初免后7周GH与对照组无显著差异外,其余均极显著高于对照组(P<0.01);初免后2周抗体阳性组极显著高于阴性组(P<0.05).细胞因子检测结果显示,在初免后2周,试验组白细胞介素4(IL-4)含量高于对照组,且TL和TM组均极显著高于对照组(P<0.01),尤以TL组最高,免疫后7周TL和TH组均显著高于对照组(P<0.05),而免疫后2周对照组免疫干扰因子γ(IMF-γ)含量极显著高于试验组(P<0.01),免疫后7周对照组INF-γ含量显著低于TL和TH组(P<0.05);阳性组IL-4水平在免疫后2周、INF-γ水平在免疫后7周均显著高于阴性组(P<0.05),其他各组间差异不显著(P>0.05).对血清中血糖(GLU)、总蛋白(TP)、总胆固醇(CH)和尿素氮(BUN)水平进行测定发现,除免疫后2周总蛋白含量TL组显著高于对照组外(P<0.05),其他指标各组间差异均不显著(P>0.05).对免疫后的水样、土样和粪样进行目的基因扩增发现,在PCR灵敏度范围内均未检测到,证实了疫苗的安全性.由上述结果可知,疫苗免疫后能取得良好的免疫效果,使机体产生显著的免疫应答,以低剂量组效果最佳,且没有对环境产生不良影响.
    • 摘要: 正专家发现,某些人虽然暴露在病毒环境中,但是天生对艾滋病具有抵抗力,他们之所以不会染病是因为一组基因将HIV病毒灭活。识别它们的基因序列将有助于研发新的艾滋病治疗方法。这项研究成果发表在英国《基因和免疫》杂志上。基因变体C4BPA和CR2可以保护机体免受HIV病毒感染。为此,研究人员检测了常年进行危险行为确切地说是吸食海洛因等高危行为但未
    • 王水莲; 冯建忠; 李文平; 夏迪; 卢向阳; 杨利国
    • 摘要: 将24头产后7d的荷斯坦奶牛随机分为4组,高、中、低剂量免疫组(记为T1、T2、T3)分别注射1010、109、108 CFU/mL无抗性基因的抑制素真核表达质粒基因疫苗(重组菌C500(pXAIS))各3mL,对照组(CK)注射10%生理盐水3 mL.初次免疫28 d后进行加强免疫.用B超诊断仪检测产后奶牛子宫恢复情况.结果表明:加强免疫能提高抗抑制素抗体P/N值,各免疫组P/N值均高于对照组,其中T1和T2组均与对照组差异显著(P<0.05),加强免疫7d,后T1组抗体阳性率最高,达83.33%;抑制素基因疫苗免疫30 d内,前21d子宫颈和子宫孕角恢复较快,后7d恢复较慢,各免疫组奶牛产后子宫颈恢复时间短于对照组,但差异不显著(P>0.05);各免疫组产后子宫孕角恢复时间比对照组短,且T1组的恢复时间(28.75±1.92)d)与对照组((33.75±1.09)d)差异显著(P<0.05).以上结果表明,在本试验条件下,非抗性筛选的抑制素真核表达质粒基因疫苗免疫产后奶牛,加强免疫后能引起较好的免疫应答,且能促进奶牛产后子宫复旧.
    • 姜卫星; 刘友生; 薛立群; 陈小军; 杨利国; 王水莲
    • 摘要: Estrus synchronized yellow cattle (n=150) were divided into 8 experimental groups immunized with different dosages (0.75,1.50,2.25, 3.00 mg per animal) of highly- or lowly-purified inhibin fusion expressing plasmid pcISI and 2 control groups immunized with plasmid pcISI or physiological saline to investigate the effect of purity and dosage on corpus lutcum development of yellow cattle immunized with inhibin gene expressing plasmid pcISI. Booster immunization was done 21 d after the primary immunization. The results showed that regardless of the highly- or lowly-purified plasmid immunization, inhibin fusion expressing plasmid in dosage of 2.25 mg per animal showed the best effect on corpus luteum size, which in experimental group with dosage of 2.25 mg per animal was remarkably larger than that in experimental group with dosage of 0.75 mg per animal (P<0.05). Inhibin antibody level is closely related to the development of corpus luteum. Corpus luteum sizes on both sides in inhibin antibody-positive cattle were bigger than those in inhibin antibody-negative ones (P<0.05).%为探讨双拷贝抑制素pcISI基因疫苗纯度和剂量对肉牛黄体发育的影响,将150头同期发情的南阳黄牛随机分为8个试验组和2个对照组,试验组用pcISI按2种纯度、4种剂量(0.75、1.50、2.25、3.00 mg/头)进行免疫处理,2个对照组分别用空质粒和生理盐水进行处理;初次免疫21d后进行加强免疫.结果表明:无论用高纯度还是低纯度疫苗免疫,2.25 mg头剂量处理对黄体的作用效果最明显,且抗体水平与黄体发育密切相关,2.25 mg头抑制素融合表达质粒组的黄体显著大于0.75 mg/头组(P<0.05),抗体阳性牛两侧黄体显著比抗体阴性牛的大(P<0.05).
    • 周晓锋; 陈裕; 张红琳
    • 摘要: order to know whether inhibin plasimid (pcISI)DNA could improve pheasants' laying performance and egg quality or not, Dcfu(C) and 109cfu(E2) colony containing inhibin plasmid(pc) were fed to hens in a chicken farm randomly. The result showed that inhibin DNA vaccine could significantly improve pheasants' laying performance, and had no influence on egg quality. All above indicated that inhibin DNA vaccine could be applied in large-scale production of laying hens.%为了探索抑制素质粒(pcISI)DNA免疫跑山鸡能否提高其产蛋性能及产蛋品质,在某养鸡场随机对自由敞放野养在山林的跑山鸡进行口服含有抑制素真核表达质粒pcISI菌落的试验.结果表明:抑制素基因疫苗可以提高跑山鸡的产蛋性能,且对鸡蛋品质无影响,可以大规模应用在蛋鸡生产中.
    • 杨军; 陈晓黎; 王一理; 司履生
    • 摘要: Objective To analyze whether different intracellular location of expressed proteins may affect humoral immunity response upon DNA immunization.rnMethods EGFP-HPV16 LI and EGFP-HPV16L1ANLS fusion genes were amplified from pFB-EGFP-HPV16Ll and pFB-EGFP-HPV16LlANLS plasmid, respectively, then were recombined into pcDNA3.1(+) vector to generate recombinant pcDNA-EGFP-HPV16Ll and pcDNA -EGFP-HPV16L1△NLS plasmid, respectively. The recombinant plasmids were transfected into CHO cells and fluorescences of EGFP tagged fusion proteins were observed under fluorescent microscope. The recombinant plasmids were subsequently injected into the tibial muscles to immunize BALB/c mices and titers of the antisera were determined using ELISA.Results The EGFP-HPV16 LI and EGFP-HPV16L1△NLS were correctly inserted into pcDNA3.1 (+) vectors. EGFP-HPV16 LI fusion protein could be detected in the nucleus of CHO cells, while the EGFP-HPV16L1 △NLS fusion protein was located in the cytoplasm of CHO cells. The two recombinant plasmids could induce humoral immunity response in BALB/c mices. After three times of immunization, the A450 values of antisera of pcDNA -EGFP-HPV16L1 △NLS plasmid immunized mices group were higher than that of recombinant pcDNA-EGFP-HPV16Ll immunized mices group (P < 0.001).rnConclusion Intracellular localization of the proteins expressed by DNA vaccines could affect humoral immunity response upon DNA immunization. Proteins localized in the cytoplasm could induce stronger humoral immunity response compared with proteins localized in the nucleus upon DNA immunization. The conclusion is very useful to design DNA vaccine to induce stronger humoral immunity response or to produce antibody upon DNA immunization.%目的 研究表达产物的不同亚细胞定位对基因免疫诱导的体液免疫应答水平的影响,为基因疫苗的设计提供参考.方法 利用分子克隆技术,分别构建能表达不同细胞定位的EGFP-HPV16L1 融合蛋白和截短型 EGFP-HPV16L1△NLS融合蛋白的重组 pcDNA-EGFP-HPV16L1 和 pcDNA-EGFPHPV16L1△NLS 真核表达载体;通过转染 CHO 细胞,并在倒置荧光显微镜下观察表达产物的细胞定位;用重组pcDNA 载体免疫 BALB/c 小鼠;EGFP 作为抗原,ELISA法检测血清抗体吸光度.结果 ①重组 pcDNA-EGFP-HPV16L1 转染的CHO 细胞核内可见到绿色荧光,pcDNA-EGFP-HPV16L1△NLS 真核表达载体转染的 CHO 细胞质内可见到绿色荧光;②两种不同的重组 pcDNA 载体均可诱导 BALB/c 小鼠体液免疫反应,但重组 pcDNA-EGFP-HPV16L1△NLS 真核表达载体免疫组小鼠 IgG 抗体 A450 值显著高于重组pcDNAEGFP-HPV16L1 真核表达载体免疫组小鼠 IgG 抗体 A450值(P < 0.001).结论 表达产物的不同细胞定位可影响基因免疫诱发的体液免疫应答水平,定位于细胞质内的蛋白分子较定位于细胞核的蛋白分子能诱导机体更强的体液免疫反应,这为以增强体液免疫反应为目的 的基因疫苗的设计提供了参考.
    • 樊宝良; 张瑾; 代红星; 黄培华
    • 摘要: 为了建立一个简捷有效的抗血清的制备方法,本研究选用猪Ⅱ型圆环病毒核衣壳蛋白基因,使用水流动力学基因免疫的方法制备高效价抗血清的可行性.应用无内提取试剂盒制备猪Ⅱ型圆环病毒核衣壳蛋白基因真核表达载体pcDNA-Cap的无内毒素质粒.将该质粒使用水流动力学尾静脉注射法对小鼠(Mus musculus)进行基因免疫,重复免疫5次后采血收集血清;以原核表达获得的N末端去除了核定位序列的猪圆环病毒核衣壳蛋白表达产物作为抗原蛋白,以制备的小鼠血清作为一抗进行酶联免疫吸附试验(ELISA)和Western blot检测.结果显示,应用水流动力学尾静脉注射法获得抗血清稀释5000倍通过Western blot至少能够检测到10 ng的抗原蛋白,ELISA分析表明,其效价可达到1∶1000000,说明获得的抗血清具有很好的效价水平.这一研究为猪Ⅱ型圆环病毒相关研究用抗体的制备提供了一个简洁有效的方法,也为猪Ⅱ型圆环病毒的防治方法的建立提供了一个值得尝试的策略.%In order to establish a simple and efficient anti-serum preparation method for molecular biology research, in this research, porcine circovirus type II capsid protein gene was selected to research on the possiblity of preparing high titer anti-serum by hydrodynamics gentic immunization. Endotoxin free plasmid of pcDNA-Cap, with would express porcine circovirus type II capsid protein in the exkaryotic cell, was prepared using endotoxin free plasmid preparing kit and was delivered by hydrodynamics tail vein injection method for genetic immunization of mice (Mus musculus). After 5 times continuous immunization, the blood serum was collected. Using porcine circovirus type II capsid protein which has been deleted its nuclear laction signal sequence at its N-terminal and expressed in Escherichia coli as antigen, the prepared anti-serum was tested by enzymeliked immuno sorbent assay(ELISA) and Western blot. The results showed that the anti-serum prepared by hydrodynamics tail vein gene delivery method had very high titer(l: 1 000 000) by ELISA and could detect at least 10 ng antigen after 5 000-fold dilution in Western blotting analysis. These results showed that hydrodynamics gene delivery method may become an efficient method for preparing antibody which will be used in porcine circovirus type II related research. This study provides an alternative method for prevention the disease caused by porcine circovirus type II.
    • 马金荣; 欧阳伟; 王永山; 吴晓悠; 朱向东; 张海彬; 范红结; 王忠灿; 唐雨德
    • 摘要: To enhance the immune efficacy of the DNA vaccine against the challenge of infectious bursal disease virus (IBDV), a three tandemed copies of chicken complement C3d gene (3C3d) with the linker sequence of (Gly4Ser)2 at 5' end was synthesized and inserting into pUC57 vector. pcDNA-VP2-3C3d was constructed by insertion of the 3C3d tandem gene into pcDNA-VP2 and transfected into BHK21 cells for expression. Western blot result showed that the expressed fusion protein of VP2-3C3d was about 162 ku and reacted positively with IBDV polyclonal antibodies. Expression of VP2-3C3d was also confirmed by the indirect immunofluorescence assay. In addition, pcDNA-VP2-3C3d and pcDNA-VP2 were used to immunize 2-week-old SPF chicken. The antibody titrations and lymphocyte proliferative responses indicated that immunized with pcDNA-VP2-3C3d induced higher titers of IBDV antibodies and lymphocyte proliferation than that of immunized with pcDNA-VP2 (p<0.05), indicating that C3d enhanced both the humoral and cellular immune response against IBDV.%为提高传染性法氏囊病病毒(IBDV) VP2基因核酸疫苗的免疫效力,本研究根据已发表的鸡源补体C3d序列,设计并合成在5'端添加编码连接肽(Gly4Ser)2序列的C3d基因.用同尾酶Bg1 Ⅱ和BamH Ⅰ构建含有3拷贝C3d与VP2基因融合的重组表达质粒pcDNA-VP2-3C3d.用脂质体法转染BHK21细胞,48 h后,western blot分析表明,表达的重组蛋白为162 ku;间接免疫荧光试验检测转染细胞中具有特异性荧光.用pcDNA-VP2-3C3d与前期构建的pcDNA-VP2分别免疫2周龄SPF鸡,二免14 d后,间接ELISA法检测IBDV抗体效价,pcDNA-VP2-3C3d组抗体水平显著高于pcDNA-VP2组;MTT法检测鸡脾淋巴细胞增殖活性,pcDNA-VP2-3C3d组免疫诱导的特异性淋巴细胞增殖活性显著高于pcDNA-VP2组(p<0.05).本研究表明C3d可以增强VP2基因免疫诱导的IBDV特异性体液和细胞免疫应答.
    • 秦健; 杜荣; 杨亚群; 周英; 张红强; 刘文花
    • 摘要: In order to clarify the roles of myostatin in myofibril damage and investigate the measures to improve the production and quality of muscle mass in livestock or control the muscle atrophy in human, the serious stress models of mice were made with high-dose dexamethasone, and the effect of physiological-dose insulin on the dexamethasone-induced myofibril damage and the relationship between the effect and myostatin expression were researched. In addition, the intervention effect of myostatin gene immunization on the dexamethasone-induced myofibril damage was studied. The results showed that: dexamethasone upregulated the expression of myostatin gene and caused the serious damage of myofibril and swelling of mitochondria, while insulin attenuated the effects of dexamethasone; myostatin gene immunization reduced the myofibril and mitochondria damages induced by dexamethasone. The results suggest that myostatin is one of key factors for myofibril degradation and the role of myostatin may be attributed to the stimulation of mitochondrial function by myostatin.%为阐明Myostatin在肌原纤维损伤中的作用,并探讨提高畜禽肉产(质)量或控制人类肌肉萎缩的方法,本试验以小鼠为模式动物,采用高剂量地塞米松构建了严重应激模型,研究生理剂量胰岛素对地塞米松致肌原纤维损伤的影响及其与Myostatin基因表达的关系,以及Myostatin基因免疫对地塞米松致肌原纤维损伤的干预作用.结果表明:地塞米松诱导Myostatin基因表达上调及严重的肌原纤维损伤和线粒体肿胀,而胰岛素注射明显减弱了这些效应;Myostatin基因免疫明显抑制了地塞米松对肌原纤维和线粒体的损伤作用.试验结果提示,Myostatin是参与肌原纤维降解的一个关键因子,该作用可能与其刺激了线粒体的功能有关.
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