본문 바로가기
KERD
논문

장출혈성대장균 O157:H7 유래 재조합 Intimin의 발현과 그의 면역반응 효과

Expression of Recombinant Intimin of Escherichia coli O157:H7 and its Effect of Immune Response

0

조회

0

다운로드

2

인용

0

참고문헌

주제분류축산학

초록

장출혈성대장균 O157:H7의 eae유전자 산물인 intimin은 장 상피세포의 부착성을 조절하는 단백질로 알려져 있다. Intimin의 C-말단 아미노산 잔기와(His)6이 혼합되어 이루어진 plasmid를 작성하여 재조합 단백질(34kDa)을 발현시켰다. 발현된 재조합 intimin 단백질의 면역원성을 확인하기 위해 토끼와 산란계에서 항혈청 및 난황항체(IgY)를 제조하였다.O157:H7에서 분리한 세포외막단백질(OMPs)과 제조된 항혈청과의 western blot상의 반응에서 약 94kDa의 위치에서 양성반응을 보여 발현된 재조합 단백질의 면역원성 효과가 확인되었다. 면역원성이 확인된 단백질을 산란계에 면역한 결과, 면역 후 4~6주 경부터 높은 수준의 항체가 형성되었다.재조합 intimin 단백질에 대한 난황 항체의 항원결합능력 조사를 위하여 중화반응시험을 수행한 결과, 재조합 intimin 단백질에 대한 난황 항체가 O157:H7과 강하게 결합하는 것으로 나타났다.따라서 본 연구에서 발현된 재조합 intimin 단백질은 토끼와 산란계의 면역반응을 유도할 수 있는 효율적인 면역원임과 동시에 난황 항체 생산을 위한 항원으로의 이용가능성이 확인되었다.

Abstract

Intimin, the product of eae gene in EHEC O157:H7, is required for intimate adherence. In this study, the C-terminal region(281 amino acids) of the EHEC O157:H7 intimin were expressed as a protein fusion with (His)6, which was used to raise antiserum in rabbits. The antiserum reacted in western blot with a 94kDa outer membrane protein of EHEC O157:H7. It was observed that the antibody titers both in egg yolk and serum appeared in 2~4 weeks after immunization with fusion protein. At the time of 8 weeks, the titre of egg yolk was found to be higher than that of sera. According to the results of neutralization test, chicken egg-yolk antibody(IgY) against the recombinant intimin strongly reacted to EHEC O157:H7. We conclude that a truncated recombinant intimin could be used as an immunogen to elicit antibody(IgY) against O157:H7.

참고문헌 (31)

  1. "Six widespread bacterial clones among Escherichia coli K1 isolates", pp.315~335 (1983), Aaronson
  2. "Site of action of a vero toxin H7 and of shiga toxin on Eukayotic ribosome", pp.45~50 (1988)
  3. "Pathogenesis of bacterial infections in animals" (1993), Iowa state university press
  4. "Infection by verocytotoxin- producing Escherichia coli", pp.15~38 (1989)
  5. "Enteropathogenic E. coli(EPEC)transfers its receptor for intimate adherence into mammalian cell", 91, pp.511~520 (1997)
  6. "Use of chicken egg-yolk antibodies against K88+ fimbrial antigen for quantitative analysis of enterotoxigenic Escherichia coli K88+ by sandwich ELISA", 79, pp.1513~1518 (1999)
  7. "Isolation of an Escherichia coli O157 H7 strain producing Shiga toxin 1 but not Shiga toxin 2 from a patient with hemolytic uremic syndrome in Korea", 166(1), pp.43~48 (1998)
  8. "The use of sorbitol- MacConkey agar in conjunction with a specific antiserum for the detection of Vero cytotoxin- producing strains of Escherichia coli O157", pp.327~335 (1988)
  9. "Properties of an Escherichia coli cytotoxin", ko(walchuk), pp.575~577 (1978)
  10. "Vero response to a cytotoxin of Escherichia coli", ko(walchuk), pp.775~779 (1977)
  11. "Implication of virulence factors in Escherichia coil O157:H7 pathogenesis.", 29(4), pp.277~296 (2003)
  12. "Expression and characterization of the EaeA gene product of Escherichia coli serotype O157", pp.4085~4092 (1993)
  13. "Passive protective effect of egg-yolk antibodies against enterotoxigenic Escherichia coli K88+ infection in neonatal and early-weaned piglets", 23, pp.283~288 (1999)
  14. "Production of Shiga-like toxin by Escherichia coli", pp.338~341 (1986)
  15. "Truncated enterohemorrhagic Escherichia coli(EHEC) O157:H7 intimin(EaeA)fusion proteins promote adherence of EHEC strains to HEp-2 cells", 64, pp.2225~2233 (1996)
  16. "Purification and characterization of a shigella dysenteriae Ⅰ-like toxin produced by Escherichia coli", 40, pp.675~683 (1983)
  17. "Shiga-like toxin converting phages from Escherichia coli strains that cause hemorrhagic colitis or infantile diarrhea", pp.694~226 696 (1984)
  18. "Molecular Cloning: A laboratory manual, 3rd edition" (2001), Cold Spring Habor, Inc
  19. "Escherichia coli O157 in feedlot cattle feces and water in four major feeder- cattle states in the USA", 61(2), pp.127~135 (2003)
  20. "Characterization of flagella purified from enterohemorrhagic", pp.1367~1372 (1988)
  21. "Outer membranes are competitive inhibitors of Escherichia coli O157 H7 adherence to epithelial cells", pp.890~899 (1991)
  22. "coli immunoglobulin Y isolated from egg yolk of immunized chickens as a potential food ingredient", 53, pp.1360~1366 (1998)
  23. "Adherence and colonization mechanisms of enterophathogenic and enterohemorrhagic Escherichia coli Microb", 12, pp.245~254 (1992)
  24. "Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets", pp.4350~4354 (1979)
  25. "Role of a 60-megadalton plasmid and Shiga-like toxins in the pathogenesis of infection caused by enterohemorrhagic Escherichia coli O157 H7 in gnotobiotic piglets", pp.3117~3125 (1987)
  26. "Cloning and characterization of the eae gene of enterohaemorhaggic Escherichia coli O157", pp.411~417 (1992)
  27. "Escherichia coli adherence to HEp-2 cells with prefixed cells", 33(5), pp.1414~1417 (1995)
  28. ".장관독성 대장균 K99(F5의 섬모항원에 대한 특이 난황항체의 생산", 42, pp.371~380 (2000)
  29. "가축의 설사유발 장독성 대장균 K99 균주의 pili 분리와 특이난황 항체의 생산에 관한 연구" (1998)
  30. "장독성대장균 F41 섬모항원에 대한 특이난황 항체 생산", 44(5), pp.633~642 (2002)
  31. "병원성 대장균 O157 H7)감염증의 특성 및 예방대책", 32, pp.546~552 (1996)

관련 논문AI추천

이 간행물의 다른 논문 (20건)