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Characterization of the chaperonin GroEL in Mycoplasma gallisepticum

Lei Tan1, Meirong Hu, Shengqing Yu

  • 1Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No.518, Ziyue Road, Minhang District, Shanghai, 200241, People's Republic of China.

Archives of Microbiology
|October 12, 2014
PubMed

Insights

Mycoplasma gallisepticum (MG) heat shock protein GroEL was identified as a protective antigen. This chaperone protein shows potential as a novel vaccine candidate for poultry respiratory disease.

Area of Science:

  • Veterinary immunology
  • Molecular biology
  • Poultry pathology

Background:

  • Mycoplasma gallisepticum (MG) causes chronic respiratory disease in poultry.
  • Identifying novel antigens is crucial for developing effective vaccines.

Purpose of the Study:

  • To identify antigenic proteins from the MG membrane.
  • To characterize the biological function and potential as a vaccine candidate of MG GroEL.

Main Methods:

  • Two-dimensional gel electrophoresis (2-DE), Western blot, and MALDI-TOF-MS were used to identify antigenic proteins.
  • Recombinant MG GroEL was expressed in E. coli and its ATPase and refolding activities were assessed.
  • Complement-dependent bactericidal assays were performed using antisera against MG rGroEL.

Main Results:

  • Several antigenic proteins were identified, including heat shock protein GroEL.
  • Recombinant MG GroEL exhibited ATPase activity and aided in refolding another protein (PrpC).
  • Antisera against MG rGroEL demonstrated significant bactericidal effects against MG.

Conclusions:

  • MG GroEL is a protective antigen with potential as a novel vaccine candidate.
  • This study provides the first report on the biological characterization of chaperone GroEL in MG.
  • Targeting MG GroEL could lead to new strategies for controlling poultry respiratory disease.

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