Chem-Bio Informatics Journal
Online ISSN : 1347-0442
Print ISSN : 1347-6297
Original
An Interaction-based Approach for Affinity Prediction between Antigen Peptide and Human Leukocyte Antigen Using COMBINE Analysis
Shinya NakamuraRie OhmuraIsao Nakanishi
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JOURNALS FREE ACCESS

Volume 17 (2017) Pages 93-102

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Abstract

In peptide vaccine therapy, a peptide with high affinity for human leukocyte antigen (HLA), is important to stimulate the immune system to kill cancer cells. Several methods to predict HLA–peptide binding have been reported, but most of them rely on informatics to analyze the amino acid sequence of the peptide. Although intermolecular-interaction-based analysis is expected to improve prediction accuracy, such a method generally involves a high computational cost. Therefore, comparative binding energy (COMBINE) analysis, a 3D-quantitative structure–activity relationship method, combined with a rapidly implemented protein modeling method, was applied to solve this problem. The new method enabled quick evaluation of peptide affinity predictions with accuracy beyond a statistical method. In addition, several amino acid residues of HLA, which are known to be important for peptide binding, could be identified.

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