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  • Title: [Identification of HTNV-NP-specific T lymphocyte epitopes and analysis of the epitope-specific T cell response].
    Author: Wang ML, Zhu Y, Wang JP, Liu JM, Fang L, Jin BQ.
    Journal: Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi; 2005 Nov; 21(6):704-6. PubMed ID: 16256031.
    Abstract:
    AIM: To identify the nucleocapsid protein of Hantaan virus (HTNV-NP)-specific T lymphocyte epitopes and analyze the epitope-specific T cell response during hemorrhagic fever with renal syndrome (HFRS). METHODS: T lymphocyte epitopes and frequencies of epitope-specific T cells were determined by ELISPOT using PBMCs from HFRS patients stimulated by individual or mixture of overlapping 15-mer peptides spanning the amino acid sequence of HTNV-NP. RESULTS: Out of 10 peptide mixtures, 8 elicited strong HTNV-NP-specific responses in 18 of 47 HFRS patients, and the T cell response was found at early stage of HFRS. Moreover, 17 HTNV-NP-specific T lymphocyte epitopes were identified in 11 patients, and most epitopes were clustered near the center of NP in linear structure. Among them, 14 T lymphocyte epitopes were described for the first time. CONCLUSION: HTNV-NP-specific T cell response can be elicited at early stage of HFRS and T lymphocyte epitopes mainly located in the center of NP, suggesting that it may play an important role in immune protection during HTNV infection.
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