Comparison of Antigenic Spots between Escherichia coli O157:H7 Strains by 2-Dimensional Gel Electrophoresis

이차원전기영동을 이용한 Escherichia coli O157:H7 균주간 항원 Spot의 비교

  • Ahn, Yeong-Chang (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Shin, Gee-Wook (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Shin, Yong-Seung (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Lee, Eung-Goo (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Lee, Hyoung-Jun (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Park, Mi-Rim (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Kim, Young-Rim (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Jung, Tae-Sung (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Kim, Gon-Sup (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University) ;
  • Kim, Yong-Hwan (Institute of Animal Medicine, College of Veterinary Medicine, Gyeong Sang Nation University)
  • 안영창 (경상대학교 수의과대학 동물의학연구소) ;
  • 신기욱 (경상대학교 수의과대학 동물의학연구소) ;
  • 신용승 (경상대학교 수의과대학 동물의학연구소) ;
  • 이응구 (경상대학교 수의과대학 동물의학연구소) ;
  • 이형준 (경상대학교 수의과대학 동물의학연구소) ;
  • 박미림 (경상대학교 수의과대학 동물의학연구소) ;
  • 김영림 (경상대학교 수의과대학 동물의학연구소) ;
  • 정태성 (경상대학교 수의과대학 동물의학연구소) ;
  • 김곤섭 (경상대학교 수의과대학 동물의학연구소) ;
  • 김용환 (경상대학교 수의과대학 동물의학연구소)
  • Accepted : 2002.05.28
  • Published : 2002.06.29

Abstract

Proteomics is an emerging powerful tool in studying protein expression and function. At present study, proteomics was employed to evaluate the antigenicity among Escherichia coli O157:H7 strains using 2-dimensional gel electrophoresis (2-DE) and immunoblotting, SDS-PAGE and immunblotting analysis revealed no big differences among E coli O157:H7 strains. 2-DE analysis, however, revealed common antigens as well as specific antigens. The immunoblotting analysis revealed 20 common antigenic spots among E coli O157:H7 strains. In addition, there were 3 and 13 spots as common antigens between ATCC 43894 and KSC 109, and between ATCC 43894 and ACH 5, respectively. Antigenic spots specific for individual strain were also identified as 15, 8 and 22 for ATCC 43894, ACH 5 and KSC 109, respectively. The common antigens would be useful by employing either vaccine development or diagnosis marker, or both, whereas the specific antigens of individual strains would be applicable for epidemiological study. This study suggest that proteome analysis, representative as 2-DE, is valuable tool in exploring the E. coli antigenicity.

Acknowledgement

Supported by : 한국과학재단

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