This article is part of the supplement: Proceedings of Delivery Systems and Current Strategies to Drug Design

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In silico identification of common epitopes from pathogenic mycobacteria

Bárbara de la Caridad Addine Ramírez1, Reynel Marrón1, Rommel Calero1, Mayelin Mirabal1, Juan Carlos Ramírez1, María E Sarmiento1, Mohd Nor Norazmi23 and Armando Acosta1*

Author affiliations

1 Finlay Institute. Ave. 27, No. 19805, La Lisa. La Habana, Cuba

2 School of Health Sciences Universiti Sains Malaysia, Malaysia

3 Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Malaysia

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Citation and License

BMC Immunology 2013, 14(Suppl 1):S6  doi:10.1186/1471-2172-14-S1-S6

Published: 25 February 2013


An in silico study was carried out to identify antigens for their possible collective use as vaccine candidates against diseases caused by different classes of pathogenic mycobacteria with significant clinical relevance. The genome sequences of the relevant causative agents were used in order to search for orthologous genes among them. Bioinformatics tools permitted us to identify several conserved sequences with 100% identity with no possibility of cross-reactivity to the normal flora and human proteins. Nine different proteins were characterized using the strain H37Rv as reference and taking into account their functional category, their in vivo expression and subcellular location. T and B cell epitopes were identified in the selected sequences. Theoretical prediction of population coverage was calculated for individual epitopes as well as their combinations. Several identical sequences, belonging to six proteins containing T and B cell epitopes which are not present in selected microorganisms of the normal microbial flora or in human proteins were obtained.