Biochemistry (Moscow)

, 74:215

Proteomic comparative analysis of pathogenic strain 232 and avirulent strain J of Mycoplasma hyopneumoniae

  • Yuan-Zuo Li
  • Yen-Peng Ho
  • Shui-Tein Chen
  • Tzyy-Wen Chiou
  • Zong-Sian Li
  • David Shiuan
Article

DOI: 10.1134/S0006297909020138

Cite this article as:
Li, YZ., Ho, YP., Chen, ST. et al. Biochemistry Moscow (2009) 74: 215. doi:10.1134/S0006297909020138

Abstract

Mycoplasma hyopneumoniae is an important pathogen of pigs causing enzootic pneumonia of swine. The pathogen remains largely enigmatic as far as the host-pathogen interactions are concerned. In the present study, the protein profiles of two strains of M. hyopneumoniae were compared by two-dimensional gel electrophoresis and mass spectrometry. The results indicate that the major adhesin P97, the 50-kDa protein derived from P159 adhesin, and the 43-kDa cleavage product of P102 are expressed at much higher levels in the pathogenic strain 232. In contrast, the avirulent strain J switches its focus to metabolism and expresses more glyceraldehyde 3-phosphate dehydrogenase in gluconeogenesis and lactate dehydrogenase, pyruvate dehydrogenase, and phosphate acetyltransferase in the pyruvate metabolism pathway. We speculate that the avirulent strain may have developed better capabilities to cope with the rich environment during repeated inoculations. Simultaneously, the capability to infect host cells may become less important so that the adhesion-related protein genes are down-regulated.

Key words

Mycoplasma hyopneumoniaeproteomicsvirulence factors

Abbreviations

2D-PAGE

two-dimensional gel electrophoresis in polyacrylamide gel

IEF

isoelectric focusing

MS

mass spectrometry

Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • Yuan-Zuo Li
    • 1
  • Yen-Peng Ho
    • 2
  • Shui-Tein Chen
    • 3
  • Tzyy-Wen Chiou
    • 1
  • Zong-Sian Li
    • 2
  • David Shiuan
    • 1
  1. 1.Department of Life Science and Institute of BiotechnologyNational Dong Hwa UniversityHualienTaiwan, ROC
  2. 2.Department of ChemistryNational Dong Hwa UniversityHualienTaiwan ROC
  3. 3.Institute of Biological ChemistryAcademia SinicaTaipeiTaiwan, ROC