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中国防痨杂志 ›› 2010, Vol. 32 ›› Issue (7): 38-41.

• 论著 • 上一篇    下一篇

结核分枝杆菌重组Mtb81蛋白抗原血清学诊断价值的研究

阳幼荣, 吴雪琼, 张俊仙, 梁艳, 张翠英, 董梅, 陈红兵, 何菊芳   

  1. 解放军第309医院结核病研究室;
  • 出版日期:2010-07-20 发布日期:2010-07-20
  • 基金资助:

    北京市科技计划研发攻关类科研基金资助项目(D08050700640802); 国家重大传染病防治科技重大专项基金资助项目(2008ZX10003-001)

Serodiagnostic value of recombinant Mtb81 protein from M.tuberculosis for tuberculosis

Yang Yourong; Wu Xueqiong; Zhang Junxian; Liang Yan; Zhang Cuiying; Dong Mei; Chen Hongbing; He Jufang   

  1. Institute of Tuberculosis Research; The 309th Hospital of PLA; Beijing 100091; China;
  • Online:2010-07-20 Published:2010-07-20
  • Contact: Wu Xueqiong E-mail:wu-xueqiong@263.net

摘要: 目的 研究重组Mtb81(rMtb81)蛋白的抗原性,评价其在结核病血清学诊断中的价值,寻找更有效的结核病诊断试剂。 方法 应用基因工程技术表达、纯化rMtb81蛋白,通过酶联免疫吸附试验(ELISA)方法检测192名健康者和210例肺结核患者血清中抗结核抗体。 结果rMtb81蛋白在大肠埃希菌细胞内以包涵体形式高效表达,表达量占菌体总蛋白的30%左右,相对分子量约80.7-kD,具有良好的抗原特异性。在210例结核病患者血清中,103例菌阳患者和107例菌阴患者抗rMtb81抗体的阳性率分别为37.9%和41.1%,总的灵敏度为39.5%。在192例正常人血清中,95例PPD阴性者和97例PPD阳性者抗Mtb81抗体的阳性率分别为1.1%和6.2%。 结论 rMtb81蛋白可能成为结核病血清学诊断的组合抗原之一。

关键词: 血清学试验, 分枝杆菌, 结核, 重组蛋白质类, 细菌蛋白质类, 抗原, 细菌

Abstract: Objective To evaluate the value of recombinant Mtb81 (rMTB81) protein from M.tuberculosis on the serodiagnosis of tuberculosis (TB), and to develop more effective diagnostic reagents for TB. Methods The rMTB81 protein was expressed and purified by metal chelation chromatography. The antibody IgG against M.tuberculosis rMtb81 antigen in 402 human sera were detected by ELISA. Results The rMTB81 protein existed in inclusion bodies of E. coli, and amounted to 30% of total bacterial proteins. Its molecular weigh...

Key words: serologic tests, Mycobacterium tuberculosis, recombinant proteins, bacterial proteins, antigens, bacterial

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