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中国生物工程杂志

CHINA BIOTECHNOLOGY
中国生物工程杂志  2010, Vol. 30 Issue (06): 44-47    DOI: Q786
研究报告     
hsRAGE-IgG FC融合蛋白的表达及其生物学活性
张璟1,莫桂玲1,张庆友1,苏志坚2,许华1,黄亚东2,郑青1*
1. 暨南大学药学院 广州 510632
2.暨南大学生命与健康工程研究院 广州 510632
Expression of hsRAGE-IgG Fc Fusion Protein and Its Bioactivity
ZHANG Jing1,MO Gui-ling1,ZHANG Qing-you1,SU Zhi-jian2,XU Hua1,HUANG Ya-dong2,ZHENG Qing1
1.Pharmacy College,Jinan University,Guanzhou 510632,China
2.Institutes of Life and Health Engineering,Jinan University,Guanzhou 510632,China
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摘要:

将编码人可溶性晚期糖基化终产物受体-免疫球蛋白G Fc段(hsRAGE-IgG Fc)融合蛋白的DNA片段克隆到大肠杆菌表达栽体pET-20b中,构建重组表达质粒,转化大肠杆菌Rosetta(DE3)中表达。SDS-PAGE分析表明其表达形式为包涵体,相对分子质量约为66kDa,表达量占茵体总蛋白的38.4%。经复性后,获得纯度为96.6%的融合蛋白,得率约为29.5mg/L。经Western印迹法鉴定,该融合蛋白可与sRAGE 抗体产生阳性反应。同时,hsRAGE-IgG Fc 融合蛋白可以显著抑制晚期糖基化终产物(AGE)引起的ECV-304 细胞NF-κB p65 表达的上调,其活性与hsRAGE相似。

关键词: 可溶性晚期糖基化终产物受体免疫球蛋白G FC段融合蛋白表达    
Abstract:

The human soluble receptor for advanced glycation end products (hsRAGE) fused with the immunoglobulinin G Fc fragment (IgG Fc) was expressed in Rosetta(DE3) by IPTG induction.The result of SDS-PAGE analysis indicated the hsRAGE-IgG Fc fusion protein was expressed in the form of inclusion body.The expression level of the fusion protein was about 40% of the total cellular protein.After renaturation and purification,a purity of about 96% of the fusion protein was obtained.Result of Western blotting indicates the fusion protein can specifically combine with sRAGE antibody and significantly inhibit the over expression of NF-κB p65 of ECV-304 cells induced by AGEs.

Key words: Soluable receptor for advanced glycation end products(sRAGE)    Immunoglobulin Fc (IgG Fc)    Fusion protein    Expression
收稿日期: 2010-01-08 出版日期: 2010-06-12
通讯作者: 郑青     E-mail: tzhengq@jnu.edu.cn
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引用本文:

张璟 莫桂玲 张庆友 苏志坚 许华 黄亚东 郑青. hsRAGE-IgG FC融合蛋白的表达及其生物学活性[J]. 中国生物工程杂志, 2010, 30(06): 44-47.

ZHANG Jing, MO Gui-Ling, ZHANG Qiang-You, SU Zhi-Jian, HU Hua, HUANG E-Dong, ZHENG Jing. Expression of hsRAGE-IgG Fc Fusion Protein and Its Bioactivity. China Biotechnology, 2010, 30(06): 44-47.

链接本文:

https://manu60.magtech.com.cn/biotech/CN/Q786        https://manu60.magtech.com.cn/biotech/CN/Y2010/V30/I06/44

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