Isolation and Purification of Lipopolysaccharide Derived from Escherichia coli O157:H7 for the Specific Antibody Production

병원성 Escherichia coli O157:H7의 특이 항체 생산을 위한 Lipopolysaccharide분리 및 정제

  • 최학선 (조선대학교 단백질소재센터) ;
  • 신영민 (부산지방식품의약품안전청 시험분석) ;
  • 정숙현 (동서대학교 식품생명공학) ;
  • 박영민 (부산대학교 의과대학 미생물학교) ;
  • 안원근 (경북대학교 생물학과)
  • Published : 2004.03.01


Escherichia coli O157:H7 cause hemorrhagic colitis and the extraintestinal complication of hemolytic-uremic syndrome, with their higher incidence occurring in children. Lipopolysaccharide (LPS) of E. coli O157:H7 is very important to make IgG anti-LPS with bactericidal activity. To identify the characteristic of E. coli OI57:H7, we isolated 60 MDa plasmid and amplified stx genes of shiga-like toxin (Stx) 1, 2 of E. coli O157:H7 by polymerase chain reaction (PCR) method. Using the simple purification method which contained phenol extract, ethanol precipitation and gel filtration steps, the LPS of E. coli O157:H7 was isolated and purified. Finally, we confirmed the purity of LPS through SDS-PAGE and silver nitrate staining.


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