Promiscuous Recognition of a Trypanosoma cruzi CD8+ T Cell Epitope among HLA-A2, HLA-A24 and HLA-A1 Supertypes in Chagasic Patients

恰加斯病患者中 HLA-A2、HLA-A24 和 HLA-A1 超型对克氏锥虫 CD8+ T 细胞表位的混杂识别

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作者:Paola Lasso, Lina Beltrán, Fanny Guzmán, Fernando Rosas, M Carmen Thomas, Manuel Carlos López, John Mario González, Adriana Cuéllar, Concepción J Puerta

Background

TcTLE is a nonamer peptide from Trypanosoma cruzi KMP-11 protein that is conserved among different parasite strains and that is presented by different HLA-A molecules from the A2 supertype. Because peptides presented by several major histocompatibility complex (MHC) supertypes are potential targets for immunotherapy, the

Significance

These results show that TcTLE is a promiscuous peptide that is presented by the A24 and A1 supertypes, in addition to the A2 supertype, suggesting its potential as a target for immunotherapy.

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