中国寄生虫学与寄生虫病杂志 ›› 2011, Vol. 29 ›› Issue (3): 19-236-238.

• 研究简报 • 上一篇    下一篇

一种高效准确定量计数噬菌体肽库目标分子的方法

 王可耕, 曾庆仁, 禹正杨, 曾铁兵, 刘彦   

  1. 1 南华大学医学院寄生虫学教研室,衡阳 421001;2 中南大学医学细胞与分子生物学实验中心,长沙 410013;3 南华大学附属第一医院肿瘤外科,衡阳 421001;4 南华大学医学院微生物学和免疫学教研室,衡阳 421001
  • 出版日期:2011-06-30 发布日期:2012-09-27

An Efficient and Accurate Method for Counting Target Molecules in Phage-Display Peptide Library

 WANG  Ke-Geng, ZENG  Qing-Ren, YU  Zheng-Yang, ZENG  Tie-Bing, LIU  Yan   

  1. 1 Department of Parasitology,School of Medicine,University of South China,Hengyang 421001,China; 2 Cell and Molecular Biological Experiment Center,Xiangya School of Medicine,Central South University,Changsha 410013,China; 3 Department of Surgical Oncology,the First Affiliated Hospital of Unversity of South China,Hengyang 421001,China; 4 Department of Microbiology and Immunology,School of Medicine,University of South China,Hengyang 421001,China
  • Online:2011-06-30 Published:2012-09-27

摘要: 利用双层琼脂平板法与荧光实时定量PCR (Real-time PCR)技术分别测定少量、中量和大量噬菌体的效价。结果显示,双层琼脂平板法与Real-time PCR法均可准确测定噬菌体效价。双层琼脂平板法所得符合条件的平板约为总数的1/3,需重复测定10次,每次消耗噬菌体10 μl,测得噬菌体效价的组内变异系数为4.93%~30.38%。Real-time PCR法重复测定3次即可,每次消耗噬菌体1 μl,其组内变异系数仅为0.02%~0.25%,明显低于双层琼脂平板法。提示,Real-time PCR技术可简单、迅速地测定噬菌体效价。

关键词: 噬菌体, 效价, 双层琼脂平板法, 荧光实时定量PCR

Abstract: The phage titer of samples representing the low, intermediate and high phage number was respectively determined by the double-layer agar plate (DLAP) method and real-time PCR assay. The two methods accurately measured the titer of samples. The plaques from about 1/3 double-agar layer plates could be used to determine the phage titer. The DLAP experiment should repeat 10 times with 10 μl sample each time, while the within-assay coefficient variation (CV) was 4.93%-30.38%. At the same time, the real-time PCR assay only repeated 3 times with 1 μl phage each time, while CV for within-assay ranged from 0.02% to 0.25%. Results indicated that real-time PCR is a simple and quick method for determining bacteriophage titer.

Key words: Phage, Titer, Double layer agar plate method:Real-Time PCR