지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.3
- 수록면
- 14 - 22 (9page)
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초록· 키워드
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Helicobacter pylori (H. pylori ), a causative agent of chronic gastritis and gastric cancer, has several virulent factors for own survival and progression toward gastric diseases in human stomach. Of those, H. pylori produces mainly urease (10~15% total protein weight) that neutralize the gastric acid for survival. Here, we identified the antigenic epitope of urease and then developed an ELISA using the antigen including the epitope of urease. We identified the antigenic epitope of urease that induces IgA antibodies in human using truncated mutants. Eight kinds of serially-truncated mutant of UreA and UreB were prepared and subjected to immunoblot using pooled sera of patients with gastric disorders. UreBEnd protein containing UreB epitope was produced and investigated its diagnostic value via ELISA in children. As a result, mutants having last 24 amino acid residues of UreB carboxyl terminus deleted did not show IgA-reactive band. The clones that contained the downstream of 448th amino acid in UreB showed IgA-reactive band. The serodiagnostic value of the UreBEnd recombinant protein including identified epitope was confirmed via IgA ELISA and shown to have 97% sensitivity and 100% specificity. These results demonstrated that carboxyl terminal region of UreB carries an antigenic epitope for IgA response in human. It may be useful for detecting H. pylori infection with improved test accuracy and minimum use of endoscopy.
목차
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2018-475-001915737