遗传 ›› 2011, Vol. 33 ›› Issue (2): 182-188.doi: 10.3724/SP.J.1005.2011.00182

• 技术与方法 • 上一篇    

PCR-CTPP: 一种基于错配技术的SNP分型方法的改良

王柯2, 3, 章金涛3, 4, 运玉霞1, 2, 吴晓冰1, 2, 陈阿群1, 2, 王鹏1, 2, 王凯娟1, 2, 张建营1, 2, 代丽萍1, 2   

  1. 1. 郑州大学公共卫生学院流行病与卫生统计学系, 郑州 450001; 
    2. 河南省肿瘤流行病学重点实验室, 郑州 450052;
    3. 郑州大学生物工程系, 郑州 450001; 
    4. 郑州大学实验动物中心, 郑州 450052
  • 收稿日期:2010-08-23 修回日期:2010-11-05 出版日期:2011-02-20 发布日期:2011-02-25
  • 通讯作者: 代丽萍 E-mail:lpdai@zzu.edu.cn
  • 基金资助:

    国家自然科学基金项目(编号:30872181, 81072360), 河南省高校科技创新人才支持计划(编号:2010HASTIT027)和河南医学科技攻关项目(编号:200903009)资助

Improvement on PCR-CTPP: a SNP genotyping approach based on mismatch technique

WANG Ke2, 3, ZHANG Jin-Tao3, 4, YUN Yu-Xia1, 2, WU Xiao-Bing1, 2, CHEN A-Qun1, 2, WANG Peng1, 2, WANG Kai-Juan1, 2, ZHANG Jian-Ying1, 2, DAI Li-Ping1, 2   

  1. 1. Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China; 
    2. Henan Key Laboratory of Tumor Epidemiology, Zhengzhou 450052, China; 
    3. Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, China; 
    4. Laboratory Animal Center of Zhengzhou University, Zhengzhou
    450052, China
  • Received:2010-08-23 Revised:2010-11-05 Online:2011-02-20 Published:2011-02-25
  • Contact: DAI Li-Ping E-mail:lpdai@zzu.edu.cn

摘要: 为探讨两对交叉引物PCR (PCR-CTPP)技术的原理并提高SNP分型的准确性, 以人类MTHFR基因1298位点突变为例, 通过设计合理的引物、优化引物终浓度及复性温度等重建PCR-CTPP检测系统, 对比常规PCR-CTPP和改良的PCR-CTPP检测系统的可靠性。结果表明, 改良的PCR-CTPP检测系统更加准确, 支持了常规方法存在理论缺陷的观点; 批量鉴定结果进一步验证了改良方法的可靠性。该技术有望在医学和分子生物学等领域广泛应用。

关键词: 两对交叉引物PCR, 四引物扩增受阻突变体系PCR, SNP分型, 人为错配, 亚甲基四氢叶酸还原酶

Abstract: To explore the technique principle of PCR with confronting two-pair primers (PCR-CTPP) and improve the accuracy of SNP genotyping by taking the 1298 locus of human gene MTHFR as an example, the reliability between conventional PCR-CTPP and improved PCR-CTPP was compared using reconstructed PCR-CTPP detecting system in terms of designing appropriate primers and optimizing annealing temperature and the final concentration of primers. The improved PCR-CTPP detection system proved to be more accurate, which supported the viewpoint on the theoretical defects of conventional PCR-CTPP. The large-scale study verified the reliability of the improved method. It is expected that this improved technique would be widely used in the field of medicine and molecular biology.

Key words: PCR-CTPP, Tetra-primer ARMS PCR, SNP genotyping, artificial/deliberate mismatch, MTHFR