| Autor: |
Dae-Hee Sohn, Hyun-Jung Sohn, Hyun-Joo Lee, Seon-Duk Lee, Sueon Kim, Seung-Joo Hyun, Hyun-Il Cho, Seok-Goo Cho, Suk-Kyeong Lee, Tai-Gyu Kim |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
PLoS ONE, Vol 10, Iss 5, p e0127899 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1932-6203 |
| DOI: |
10.1371/journal.pone.0127899 |
| Popis: |
An EBV-specific cellular immune response is associated with the control of EBV-associated malignancies and lymphoproliferative diseases, some of which have been successfully treated by adoptive T cell therapy. Therefore, many methods have been used to measure EBV-specific cellular immune responses. Previous studies have mainly used autologous EBV-transformed B-lymphoblastoid cell lines (B-LCLs), recombinant viral vectors transfected or peptide pulsed dendritic cells (DCs) as stimulators of CD8(+) and CD4(+) T lymphocytes. In the present study, we used an interferon-γ (IFN-γ) enzyme-linked immunospot (ELISPOT) assay by using isolated CD8(+) and CD4(+) T cells stimulated with mRNA-transfected DCs. The frequency of latent membrane protein 1 (LMP1)-specific IFN-γ producing CD4(+) T cells was significantly higher than that of LMP2a. The frequency of IFN-γ producing CD4(+) T cells was significantly correlated with that of CD8(+) T cells in LMP1-specific immune responses (r = 0.7187, Pc < 0.0001). To determine whether there were changes in LMP1- or LMP2a-specific immune responses, subsequent peripheral blood mononuclear cells (PBMCs) samples were analyzed. Significant changes were observed in 5 of the 10 donors examined, and CD4(+) T cell responses showed more significant changes than CD8(+) T cell responses. CD8(+) and CD4(+) T cells from EBV-seropositive donors secreted only the Th1 cytokines IFN-γ, TNF-α, and IL-2, while Th2 (IL-4) and Th17 (IL-17a) cytokines were not detected. CD4(+) T cells secreted significantly higher cytokine levels than did CD8(+) T cells. Analysis of EBV-specific T cell responses using autologous DCs transfected with mRNA might provide a comprehensive tool for monitoring EBV infection and new insights into the pathogenesis of EBV-associated diseases. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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