PMID- 23994431 OWN - NLM STAT- MEDLINE DCOM- 20140714 LR - 20131008 IS - 1879-0542 (Electronic) IS - 0165-2478 (Linking) VI - 154 IP - 1-2 DP - 2013 Jul-Aug TI - The ever-growing peptide knowledge promotes the improvement of HLA class I peptide-binding prediction. PG - 49-53 LID - S0165-2478(13)00110-7 [pii] LID - 10.1016/j.imlet.2013.08.008 [doi] AB - Computational prediction methods for peptide binding to human leukocyte antigen (HLA) molecules have played an instrumental role in the development of epitope-based vaccines. These methods are based on experimentally verified peptides. However, the available peptide data continue increasing and contain significant biases. In this study, we report the feedback effect of peptide data on a frequently used matrix-based prediction method. We implemented the weighted and unweighted models of this method and evaluated the relative performance of the two models on several benchmark datasets. Improvements on both models were obtained by optimizing the components of a training dataset based on the effect of peptide data on the performance of prediction models. Moreover, the variation of the relative performance of the weighted and unweighted models with the evaluated data indicated that the increased number of binding peptides required the modification of the predictive engine. Our results suggest that prediction methods for HLA-binding peptides should be updated as HLA-peptide-binding knowledge increases. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Wang, Shufeng AU - Wang S AD - Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, China. FAU - Wu, Yuzhang AU - Wu Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130828 PL - Netherlands TA - Immunol Lett JT - Immunology letters JID - 7910006 RN - 0 (Epitopes) RN - 0 (HLA-A Antigens) RN - 0 (Peptides) SB - IM MH - Antigen Presentation MH - Computational Biology MH - Computer Simulation MH - Epitopes/*immunology MH - HLA-A Antigens/*immunology MH - Humans MH - Knowledge Bases MH - *Models, Theoretical MH - Peptides/*immunology MH - Predictive Value of Tests MH - Prognosis MH - Protein Binding OTO - NOTNLM OT - AUC OT - HLA OT - HLA-binding peptides OT - Improvement OT - MHC OT - NMN OT - Prediction OT - ROC OT - human leukocyte antigen OT - major histocompatibility complex OT - non-motif-containing non-binder OT - receiver operating characteristic OT - the area under the ROC curve EDAT- 2013/09/03 06:00 MHDA- 2014/07/16 06:00 CRDT- 2013/09/03 06:00 PHST- 2013/07/31 00:00 [received] PHST- 2013/08/18 00:00 [accepted] PHST- 2013/09/03 06:00 [entrez] PHST- 2013/09/03 06:00 [pubmed] PHST- 2014/07/16 06:00 [medline] AID - S0165-2478(13)00110-7 [pii] AID - 10.1016/j.imlet.2013.08.008 [doi] PST - ppublish SO - Immunol Lett. 2013 Jul-Aug;154(1-2):49-53. doi: 10.1016/j.imlet.2013.08.008. Epub 2013 Aug 28.