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[1]刘晶晶,陈玉梅,潘卫东.梅毒螺旋体TP17蛋白B细胞表位研究[J].天津医科大学学报,2022,28(05):513-518.
 LIU Jing-jing,CHEN Yu-mei,PAN Wei-dong.The study on B cell epitope of Treponema pallidum TP17 protein[J].Journal of Tianjin Medical University,2022,28(05):513-518.
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梅毒螺旋体TP17蛋白B细胞表位研究(PDF)
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《天津医科大学学报》[ISSN:1006-8147/CN:12-1259/R]

卷:
28卷
期数:
2022年05期
页码:
513-518
栏目:
基础医学
出版日期:
2022-09-20

文章信息/Info

Title:
The study on B cell epitope of Treponema pallidum TP17 protein
文章编号:
1006-8147(2022)05-0513-06
作者:
刘晶晶12陈玉梅3潘卫东1
(1.郑州大学基础医学院,郑州450001;2.西华县人民医院检验科,周口466000;3.郑州大学生命科学学院,郑州450001)
Author(s):
LIU Jing-jing12CHEN Yu-mei3PAN Wei-dong1
(1.School of Medical Sciences,Zhengzhou University,Zhengzhou 450001,China; 2.Xihua County People′s Hospital,Zhoukou 466000,China; 3. School of Life Science,Zhengzhou University,Zhengzhou 450001,China)
关键词:
梅毒螺旋体TP17蛋白B细胞表位线性表位
Keywords:
treponema pallidumTP17 proteinB cell epitopelinear epitopes
分类号:
R377+.1
DOI:
-
文献标志码:
A
摘要:
目的:采用生物信息学方法预测梅毒螺旋体TP17蛋白B细胞表位,并验证TP17表位多肽与梅毒阳性临床血清的反应性。方法:用SOPMA、DNASTAR、SWISS-MODEL及IEDB数据库BepiPred-2.0等软件预测脂蛋白TP17的结构及B细胞表位。采用间接ELISA方法检测10份梅毒螺旋体阳性患者血清样本,与脂蛋白TP17及6段重叠多肽的反应性。结果:TP17蛋白6个线性B细胞表位为Thr27~Glu38、Leu53~Asp62、Thr66~Gln74、Lys75~Pro88、Leu107~Lys119以及Tyr132~Met145,预测的构象表位涉及的氨基酸为:Lys34-Ala35、Ala55、Pro88、Glu99、Pro136~Pro147、Thr154,这些抗原表位分散于TP17蛋白分段表达的6段重叠多肽(Tp17-1 Tp17-6)中的不同区域,ELISA结果显示这6段多肽均与梅毒患者阳性血清样本发生特异反应,OD450值在0.59~1.45之间,S/N>2.1。结论:鉴定了TP17蛋白6个线性B细胞表位,该表位均与梅毒患者阳性血清发生特异反应。
Abstract:
Objective:To predict the B cell epitope of TP17 protein of Treponema pallidumby bioinformatics method,and verify the reactivity of TP17 epitope polypeptide with syphilis positiveclinical serum. Methods: The structure and B cell epitope of lipoprotein TP17 were predicted by SOPMA,DNASTAR,SWISS-MODEL and IEDB database BepiPred-2.0. Ten Treponema pallidum positive serum samples were used to detect the reactivity of recombinant protein TP17 and 6-segment overlapping polypeptide of TP17 by indirect ELISA. Results: The predicted six linear B cell epitopes of TP17 protein were Thr27-Glu38,Leu53-Asp62,Thr66-Gln74,Lys75- Pro88,Leu107-Lys119 and Tyr132-Met145. The predicted conformational epitopes involved amino acidswere Lys34-Ala35,Ala55,Pro88,Glu99,Pro136-Pro147 and Thr154. These cell epitopes were dispersed in the 6-segment overlapping polypeptide(Tp17-1 to Tp17-6).The results of ELISA showed that the six polypeptides had specific reaction with the positive serum samples of syphilis patients,and OD450 value was 0.59~1.45,S/N>2.1. Conclusion: 6 linear B cell epitopes of TP17 protein are identified,and all of which are specific to the positive serum of syphilis patients.

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备注/Memo

备注/Memo:
基金项目 郑州市重大科技专项(2020YJGGG0001)
作者简介 刘晶晶(1988-),女,主管检验师,硕士在读,研究方向:临床免疫学检验;通信作者:潘卫东,E-mail:panwd@zzu.edu.cn。
更新日期/Last Update: 2022-09-20