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基于Iclp的拟态弧菌OmpU_(AP)真核表达重组质粒的构建及其免疫效果初步评价
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作者 刘艳 丁淑荃 +3 位作者 陶会竹 曹际 周昊 李槿年 《安徽农业大学学报》 CAS CSCD 北大核心 2017年第3期373-380,共8页
为了探明鱼类恒定链类似蛋白(Iclp)能否作为免疫载体,提高基因疫苗的免疫效果,以拟态弧菌OmpU蛋白的黏附功能域(OmpU_(AP))为疫苗靶点,构建真核表达重组质粒pcDNA3.1-OmpU_(AP)和基于草鱼Iclp的pcDNA3.1-Iclp-OmpU_(AP)。用2种真核表达... 为了探明鱼类恒定链类似蛋白(Iclp)能否作为免疫载体,提高基因疫苗的免疫效果,以拟态弧菌OmpU蛋白的黏附功能域(OmpU_(AP))为疫苗靶点,构建真核表达重组质粒pcDNA3.1-OmpU_(AP)和基于草鱼Iclp的pcDNA3.1-Iclp-OmpU_(AP)。用2种真核表达重组质粒分别免疫草金鱼,同时设置空质粒pcDNA3.1(+)对照组与PBS对照组。于免疫后不同时间(7、14、21、28和35 d)采用PCR和RT-PCR方法检测重组质粒在鱼体不同组织中的分布与转录水平的表达情况,使用双抗体夹心ELISA检测血清抗体水平,并于免疫后第35天进行攻毒保护性实验,检测其免疫保护率。结果显示,免疫后第7天在肌肉、鳃、头肾、肝脏和脾脏中均有重组质粒分布,并在35 d内持续表达。pcDNA-OmpU_(AP)免疫组草金鱼的血清抗体水平缓慢上升,除第21天外,其余检测时间点的抗体水平与空质粒对照组无显著差异。pcDNA3.1-Iclp-OmpU_(AP)免疫组草金鱼在免疫后7 d即有血清抗体产生,随着免疫时间延长,抗体水平不断上升,至28 d达到峰值,随后抗体水平开始下降;除第7天外,其余各检测时间点的血清抗体水平均显著或极显著高于pcDNA3.1-OmpU_(AP)免疫组与空质粒对照组。攻毒后pcDNA3.1-Iclp-OmpU_(AP)和pcDNA-OmpU_(AP)免疫组草金鱼的相对免疫保护率为别为46.7%和20%,而空质粒对照组和PBS对照组的实验鱼全部发生死亡。表明Iclp可以作为免疫载体,提高鱼类基因疫苗的免疫效果。 展开更多
关键词 拟态弧菌 OmpU蛋白 Iclp蛋白 真核重组质粒 免疫效果
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黏膜相关恒定T细胞与肿瘤 被引量:2
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作者 邵春艳 仲飞 +1 位作者 王学富 王华 《中国药理学通报》 CAS CSCD 北大核心 2019年第12期1650-1653,共4页
黏膜相关恒定T(mucosal-associated invariant T,MAIT)细胞是一种在进化上高度保守的T淋巴细胞亚群,具有与先天自然杀伤T(innate natural killer T cells,iNKT)细胞相似的天生功能。MAIT细胞由其不变的T细胞受体(T cell receptor,TCR)-... 黏膜相关恒定T(mucosal-associated invariant T,MAIT)细胞是一种在进化上高度保守的T淋巴细胞亚群,具有与先天自然杀伤T(innate natural killer T cells,iNKT)细胞相似的天生功能。MAIT细胞由其不变的T细胞受体(T cell receptor,TCR)-α链及其限制性主要组织相容性复合物(major histocompatibility complex,MHC)相关蛋白-1(MR1)所定义,并通过MR1识别抗原,被激活后分泌多种细胞因子,直接或间接参与机体的免疫应答。MAIT细胞在人外周血和各组织中均含量丰富,并与多种感染性疾病、自身免疫性疾病及恶性肿瘤的发生、发展有着密切的关系。该文主要对MAIT细胞在肿瘤疾病中的研究进行综述。 展开更多
关键词 黏膜相关恒定T细胞 T细胞受体 主要组织相容性复合物相关蛋白-1 细胞因子 肿瘤 免疫监视
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Theoretical and experimental biology in one<br>—A symposium in honour of Professor Kuo-Chen Chou’s 50th anniversary and Professor Richard Giegé’s 40th anniversary of their scientific careers 被引量:3
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作者 Sheng-Xiang Lin Jacques Lapointe 《Journal of Biomedical Science and Engineering》 2013年第4期435-442,共8页
It has been a dream that theoretical biology can be extensively applied in experimental biology to accelerate the understanding of the sophiscated movements in living organisms. A brave assay and an excellent example ... It has been a dream that theoretical biology can be extensively applied in experimental biology to accelerate the understanding of the sophiscated movements in living organisms. A brave assay and an excellent example were represented by enzymology, in which the well-established physico-chemistry is used to describe, to fit, to predict and to improve enzyme reactions. Before the modern bioinformatics, the developments of the combination of theoretical biology and experimental biology have been mainly limited to various classic formulations. The systematic use of graphic rules by Prof. Kuo-Chen Chou and his co-workers has significantly facilitated to deal with complicated enzyme systems. With the recent fast progress of bioinformatics, prediction of protein structures and various protein attributes have been well established by Chou and co-workers, stimulating the experimental biology. For example, their recent method for predicting protein subcellular localization (one of the important attributes of proteins) has been extensively applied by scientific colleagues, yielding many new results with thousands of citations. The research by Prof. Chou is characterized by introducing novel physical concepts as well as powerful and elegant mathematical methods into important biomedical problems, a focus throughout his career, even when facing enormous difficulties. His efforts in 50 years have greatly helped us to realize the dream to make “theoretical and experimental biology in one”. Prof. Richard Giege is well known for his multi-disciplinary research combining physics, chemistry, enzymology and molecular biology. His major focus of study is on the identity of tRNAs and their interactions with aminoacyl-tRNA synthetases (aaRS), which are of critical importance to the fidelity of protein biosynthesis. He and his colleagues have carried out the first crystallization of a tRNA/aaRS complex, that between tRNAAsp and AspRS from yeast. The determination of the complex structure contributed significantly to under- stand the interaction of protein and RNA. From his fine research, they have also found other biological function of these small RNAs. He has developed in parallel appropriate methods for his research, of which the protein crystallogenesis, a name he has coined, is an excellent example. Now macromolecular crystallogenesis has become a developed science. In fact, such contribution has accelerated the development of protein crystallography, stimulating the study of macromolecular structure and function. 展开更多
关键词 THEORETICAL BIOLOGY Experimental BIOLOGY Chou’s Graphic Rules in ENZYMOLOGY Prediction of protein Attributes Chou’s invariance Theorem Macromolecular Crystallogenesis tRNA Identity on AMINOACYLATION Specificity Physico-Biochemistry
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鸡恒定链活性片段和NDVF蛋白表位嵌合体的构建与鉴定
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作者 倪庆胜 陈芳芳 余为一 《安徽农业科学》 CAS 2012年第25期12556-12557,12574,共3页
[目的]为研究基于恒定链(Ii)分子片段的免疫载体提供试验材料。[方法]利用鸡恒定链的部分有免疫活性的片段作为免疫载体结构,构建含新城疫病毒F蛋白抗原片段的嵌合体。[结果]成功构建了Ii-key/F306、Ii-key/F306/AP、Cyt/Ii-key/F306和C... [目的]为研究基于恒定链(Ii)分子片段的免疫载体提供试验材料。[方法]利用鸡恒定链的部分有免疫活性的片段作为免疫载体结构,构建含新城疫病毒F蛋白抗原片段的嵌合体。[结果]成功构建了Ii-key/F306、Ii-key/F306/AP、Cyt/Ii-key/F306和Cyt/Ii-key/F306/AP 4个嵌合体。重组质粒能被诱导表达相应蛋白分子,而且通过纯化获得95%高纯度。[结论]该试验中嵌合体的成功制备为动物免疫试验奠定了基础。 展开更多
关键词 鸡恒定链 新城疫病毒 融合蛋白 嵌合体 原核表达 纯化
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