Comparison of Autotransporter and Ice Nucleation Protein as Carrier Proteins for Antibody Display on The Cell Surface of Escherichia coli
DOI:
Author:
Affiliation:

Key Laboratory for Protein and Peptide Pharmaceuticals,National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of Sciences,Key Laboratory for Protein and Peptide Pharmaceuticals,National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of Sciences,Hebei United University,Key Laboratory for Protein and Peptide Pharmaceuticals,National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of Sciences

Clc Number:

Fund Project:

This work was supported by grants from The Ministry of Health of The People's Republic of China (2013ZX10003006-001-001), The National Laboratory of Biomacromolecules(2013kf01) and The Ministry of Science and Technology of People's Republic of China (2011YQ03013404)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Antibody surface display technology is critical for novel antibody screening and antibody affinity maturation. Currently most frequently used display methods are phage display and yeast display. Although Escherichia coli (E. coli) is easily cultured and genetically manipulated, thus is potentially an excellent display host, the display technology based on E. coli has not been widely used. One of the problems is lack of efficient display of antibodies on the surface of E. coli. Many proteins have been tested as display carriers in outer membrane display in E. coli. Display systems based on autotransporter protein (AT) and ice nucleation protein (INP) is the most extensively studied. Another problem is unstable survival rates of E. coli when antibody is displayed. In this study, we systematically examined display level, antigen-binding affinity of displayed antibody and survival rate of E. coli using Ag43β(β domain of Antigen43, an AT protein) and INPNC (fragment of N-terminal and C-terminal of INP) as carrier proteins and T7, lac, araBAD as promoters for antibody expression. We found that the antigen-binding ability of the Ag43β based display was superior to that of the INPNC based system. As expected, T7, lac and araBAD promoters drove high, medium and low expressions of antibody. The host survival rate using T7 promoter was extremely low (INPNC: 0.0033%, Ag43β: 0.02%, the host bearing araBAD promoter had the highest survival rate (INPNC: 37.80%, Ag43β: 90.23%), and the lac based system had a survival rate of 2.04% (INPNC) and 13.27% (Ag43β). Balancing the antigen-binding abilities, antibody expression levels and survival rates, a system using Ag43β as carrier protein and lac as promoter is the best choice for antibody display on E. coli.

    Reference
    Related
    Cited by
Get Citation

YANG Xiao, SUN Shuang, WANG Hai-Feng, HANG Hai-Ying. Comparison of Autotransporter and Ice Nucleation Protein as Carrier Proteins for Antibody Display on The Cell Surface of Escherichia coli[J]. Progress in Biochemistry and Biophysics,2013,40(12):1209-1219

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:March 07,2013
  • Revised:April 25,2013
  • Accepted:April 26,2013
  • Online: December 20,2013
  • Published: