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- W2743115915 abstract "Abstract Alternative splicing occurs frequently in many genes, especially those involved in immunity. Unfortunately, the functions of many alternatively spliced molecules from immunologically relevant genes remain unknown. Classical HLA-I molecules are expressed on almost all nucleated cells and play a pivotal role in both innate and adaptive immunity. Although splice variants of HLA-I genes have been reported, the details of their functions have not been reported. In the current study, we determined the characteristics, expression, and function of a novel splice variant of HLA-A11 named HLA-A11svE4. HLA-A11svE4 is located on the cell surface without β2-microglobulin (β2m). Additionally, HLA-A11svE4 forms homodimers as well as heterodimers with HLA-A open conformers, instead of combining with β2m. Moreover, HLA-A11svE4 inhibits the activation of NK cells to protect target cells. Compared with β2m and HLA-A11, the heterodimer of HLA-A11svE4 and HLA-A11 protected target cells from lysis by NK cells more effectively. Furthermore, HLA-AsvE4 expression was upregulated by HIV-1 in vivo and by HSV, CMV, and hepatitis B virus in vitro. In addition, our findings indicated that HLA-A11svE4 molecules were functional in activating CD8+ T cells through Ag presentation. Taken together, these results suggested that HLA-A11svE4 can homodimerize and form a novel heterodimeric complex with HLA-A11 open conformers. Furthermore, the data are consistent with HLA-A11svE4 playing a role in the immune escape of HIV-1." @default.
- W2743115915 created "2017-08-17" @default.
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- W2743115915 date "2017-09-15" @default.
- W2743115915 modified "2023-09-23" @default.
- W2743115915 title "α3-Deletion Isoform of HLA-A11 Modulates Cytotoxicity of NK Cells: Correlations with HIV-1 Infection of Cells" @default.
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- W2743115915 doi "https://doi.org/10.4049/jimmunol.1602183" @default.
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