Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (9): 252-258.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0228

• CONTENTS • Previous Articles     Next Articles

Preparation and Application of Soluble Human Squamous Cell Carcinoma Antigen Expressed by Escherichia coli

CHEN Chun-ye1,LIU Jian1,ZHU Rui1,LI Shu-xuan1,YE Jiang-hui1,WANG Wei1,PAN De-quan1,XU Fei-hai2,CHENG Tong1,XIA Ning-shao1   

  1. 1. State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics,National Institute of Diagnostics and Vaccine Development of Infectious Disease,School of Life Science,Xiamen University,Xiamen 361102;
    2. Xiamen WANTAI Inndox Biotechnology Co.,Ltd., Xiamen 361003
  • Received:2017-03-22 Online:2017-09-01 Published:2017-09-15

Abstract: The aims of this study are to establish a method for efficient soluble expression of human squamous cell carcinoma antigen(SCCAg)based on Escherichia coli expression system and obtain the recombinant SCCAg antigen in fine activity,then apply it in the detection method establishment of antigen. The study on the method of soluble expression and purification of recombinant SCCAg antigen was conducted based on pGEX-6P-1 vector and E. coli ER2566 strain. The activity of the purified antigen was evaluated by Abbott Kit and the specific monoclonal antibody was screened by indirect ELISA. It was proved that PGEX-6P-1 vector and E. coli strain ER2566 could be used to establish efficient soluble expression and purification method for recombinant SCCAg antigen. Moreover,the recombinant SCCAg antigen was proved to be in high purity and activity. Thus,the SCCAg detection method of chemical luminous tube was established with the specific monoclonal antibodies. In conclusion,an effective method for the expression and purification of SCCAg,which is based on the E. coli expression system,is established.

Key words: human squamous cell carcinoma antigen, Escherichia coli expression system, soluble expression, monoclonal antibody