Open Access

In silico epitope prediction, expression and functional analysis of Per a 10 allergen from the American cockroach

  • Authors:
    • Xunliang Tong
    • Miao Guo
    • Min Jin
    • Hao Chen
    • Yanming Li
    • Ji-Fu Wei
  • View Affiliations

  • Published online on: October 26, 2016     https://doi.org/10.3892/ijmm.2016.2790
  • Pages: 1806-1814
  • Copyright: © Tong et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Cockroach (CR) allergies caused by the American cockroach hyave been recognized to be repsonsible for IgE-mediated type I hypersensitivity worldwide. Per a 10 is one of the recognized main allergens of the American CR. In a previous study, we examined another American CR allergen, Per a 9 in patients with CR allergies and examined epitope sequences in this allergen. In the present study, we aimed to examine epitope sequences in the Per a 10 allergen. for this purpose, the Per a 10 gene was cloned and expressed in Escherichia coli (E. coli) systems. Our results revealed that 9 out of 16 (56.3%) sera from patients with American CR allergies reacted to Per a10, as assessed by ELISA, confirming that Per a 10 is a major allergen of the American CR. Our results also revealed that the expression of CD63 and CCR3 on passively sensitized basophils (obtained sera of patients with American CR allergies) was increased by approximately 2.3-fold, indicating that recombinant Per a 10 is functionally active. In addition, 3 immunoinformatics tools, namely the DNAStar Protean system, the Bioinformatics Predicted Antigenic Peptides (BPAP) system and the BepiPred 1.0 server were used to predict the peptides and the results revealed 8 peptides (2-12, 55-67, 98-120, 125-133, 149-160, 170-182, 201-208 and 223-227) as potential B cell epitopes of the Per a 10 allergen. Moreover, Per a 10 was predicted to have 3 T cell epitope sequences, namely 83-92, 139-147 and 162-170. The findings of our study on the CR allergen may prove to be useful in the development of peptide-based vaccine for the prevention and/or treatment of CR allergies.
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December-2016
Volume 38 Issue 6

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Tong X, Guo M, Jin M, Chen H, Li Y and Wei J: In silico epitope prediction, expression and functional analysis of Per a 10 allergen from the American cockroach. Int J Mol Med 38: 1806-1814, 2016
APA
Tong, X., Guo, M., Jin, M., Chen, H., Li, Y., & Wei, J. (2016). In silico epitope prediction, expression and functional analysis of Per a 10 allergen from the American cockroach. International Journal of Molecular Medicine, 38, 1806-1814. https://doi.org/10.3892/ijmm.2016.2790
MLA
Tong, X., Guo, M., Jin, M., Chen, H., Li, Y., Wei, J."In silico epitope prediction, expression and functional analysis of Per a 10 allergen from the American cockroach". International Journal of Molecular Medicine 38.6 (2016): 1806-1814.
Chicago
Tong, X., Guo, M., Jin, M., Chen, H., Li, Y., Wei, J."In silico epitope prediction, expression and functional analysis of Per a 10 allergen from the American cockroach". International Journal of Molecular Medicine 38, no. 6 (2016): 1806-1814. https://doi.org/10.3892/ijmm.2016.2790