An assay technique for the determination of the human IgG in human plasma has been developed by utilizing protein A immobilized monolithic capillary column. The affinity chromatography experiment was performed on a ca...An assay technique for the determination of the human IgG in human plasma has been developed by utilizing protein A immobilized monolithic capillary column. The affinity chromatography experiment was performed on a capillary electrophoresis instrument by using its pressure system as the driving force. Reactive monolithic capillary columns have been prepared by in-situ copolymerization of the monomers in the presence of porogenic dilute, and protein A was immobilized on the monolithic rods directly or through a 11 carbon atom space arm with molded synthetic methods. The non-specific adsorption of two kinds of media has been studied and the results showed that the medium without space arm gives very low non-specific adsorption of BSA. The affinity column without space arm was used to determine the human immunoglobulin G(HIgG) in human serum. The correlative coefficient of the calibration curve reaches 0 998 7. The total time of rapid analysis was less than 0 7 min. The consumption of eluent buffer and sample is much low than by conventional HPLC.展开更多
采用盐析法、重组蛋白A(HiTrapr Protein A Sepharose)亲和层析法分离纯化草鱼血清中的IgM,并通过SDS-PAGE及Western-blot技术对纯化蛋白的部分特性进行分析比较并制备兔抗IgM抗血清。结果表明:33%硫酸铵溶液可以沉淀血清中大部分蛋白,...采用盐析法、重组蛋白A(HiTrapr Protein A Sepharose)亲和层析法分离纯化草鱼血清中的IgM,并通过SDS-PAGE及Western-blot技术对纯化蛋白的部分特性进行分析比较并制备兔抗IgM抗血清。结果表明:33%硫酸铵溶液可以沉淀血清中大部分蛋白,但电泳条带仍较多,其中含有78kD和28kD的条带,因此仅可作为免疫球蛋白粗提的方法;而rProtein A亲和层析法所提蛋白则仅有上述重链(78kD)和轻链(28kD)。Western-blot显示,鼠抗人Ig抗体可与78kD及28kD条带发生发应。rProtein A亲和法提纯蛋白的纯度较高,但含量较低,条带较淡,仅可作为实验室小量提纯草鱼IgM的有效方法。将提纯的蛋白免疫实验兔后可制得效价高达1:25600的兔抗鱼IgM血清,并测得血清蛋白总量和IgM含量分别为25.87mg和4.5mg,IgM占血清蛋白总量的17.39%。本实验所采用的蛋白A亲和层析法提取草鱼血清IgM可以方便、快捷地获得高纯度的产物,适合在实验室中纯化鱼类IgM。同时本研究所制备的兔抗草鱼IgM血清也为今后的相关研究工作打下基础。展开更多
文摘An assay technique for the determination of the human IgG in human plasma has been developed by utilizing protein A immobilized monolithic capillary column. The affinity chromatography experiment was performed on a capillary electrophoresis instrument by using its pressure system as the driving force. Reactive monolithic capillary columns have been prepared by in-situ copolymerization of the monomers in the presence of porogenic dilute, and protein A was immobilized on the monolithic rods directly or through a 11 carbon atom space arm with molded synthetic methods. The non-specific adsorption of two kinds of media has been studied and the results showed that the medium without space arm gives very low non-specific adsorption of BSA. The affinity column without space arm was used to determine the human immunoglobulin G(HIgG) in human serum. The correlative coefficient of the calibration curve reaches 0 998 7. The total time of rapid analysis was less than 0 7 min. The consumption of eluent buffer and sample is much low than by conventional HPLC.
文摘采用盐析法、重组蛋白A(HiTrapr Protein A Sepharose)亲和层析法分离纯化草鱼血清中的IgM,并通过SDS-PAGE及Western-blot技术对纯化蛋白的部分特性进行分析比较并制备兔抗IgM抗血清。结果表明:33%硫酸铵溶液可以沉淀血清中大部分蛋白,但电泳条带仍较多,其中含有78kD和28kD的条带,因此仅可作为免疫球蛋白粗提的方法;而rProtein A亲和层析法所提蛋白则仅有上述重链(78kD)和轻链(28kD)。Western-blot显示,鼠抗人Ig抗体可与78kD及28kD条带发生发应。rProtein A亲和法提纯蛋白的纯度较高,但含量较低,条带较淡,仅可作为实验室小量提纯草鱼IgM的有效方法。将提纯的蛋白免疫实验兔后可制得效价高达1:25600的兔抗鱼IgM血清,并测得血清蛋白总量和IgM含量分别为25.87mg和4.5mg,IgM占血清蛋白总量的17.39%。本实验所采用的蛋白A亲和层析法提取草鱼血清IgM可以方便、快捷地获得高纯度的产物,适合在实验室中纯化鱼类IgM。同时本研究所制备的兔抗草鱼IgM血清也为今后的相关研究工作打下基础。
