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Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (18): 1821-1828. Previous Articles     Next Articles

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应用独立成分分析方法预测CTL表位

董素梅1,2，宋哲1,3，刘涛1,2，朱鸣华1，刘伟*,1,2   

  1. (1大连理工大学高科技研究院 大连 116023)
    (2大连理工大学物理与光电工程学院 大连 116023)
    (3大连交通大学理学院 大连 116028)
  • 投稿日期:2009-12-25 修回日期:2010-03-19 发布日期:2010-05-20
  • 通讯作者: 刘伟 E-mail:jchjys@dlut.edu.cn;

Prediction of the CTL Epitope Based on Independent Component Analysis Method

Dong Sumei1,2 Song Zhe1,3 Liu Tao1,2 Zhu Minghua1 Liu Wei*,1,2   

  1. (1 College of Advanced Science and Technology, Dalian University of Technology, Dalian 116023)
    (2 Department of Physics, Dalian University of Technology, Dalian 116023)
    (3 School of Science, Dalian Jiaotong University, Dalian 116028)
  • Received:2009-12-25 Revised:2010-03-19 Published:2010-05-20
  • Contact: 刘伟 LIU E-mail:jchjys@dlut.edu.cn;

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The quantitative structure-activity relationship (QSAR) models of peptide binding to MHC molecule are studied through the independent component analysis (ICA) method. The three z amino acid descriptors and the five z amino acid descriptors are used respectively in the models. A training set of 316 peptides and a test set of 786 peptides are used. The predictive accuracy and the area under the receiver operator characteristics curve (AUC) of the three z amino acid descriptors model are 70.3% and 0.70 respectively. The predictive accuracy and AUC of the five z amino acid descriptors are 70.9% and 0.79 respectively. This study helps in further understanding the mechanism of the interaction between MHC molecules and peptides.

Key words: cytotoxic T lymphocyte epitope, independent component analysis, amino acid descriptor, QSAR