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- W2078697863 abstract "Lack of MHC-mediated antigen presenting functions of fetal trophoblast cells is an important mechanism to evade maternal immune recognition. In this study we demonstrated that the deficiency in MHC expression and antigen presentation in the trophoblast cell lines JEG-3 and JAR is caused by lack of class II transactivator (CIITA) expression due to hypermethylation of its interferon-gamma (IFN-gamma)-responsive promoter (PIV). Circumvention of this lack of CIITA expression by introduction of exogenous CIITA induced cell surface expression of HLA-DR, -DP, and -DQ, leading to an acquired capacity to present antigen to antigen-specific T cells. Transfection of CIITA in JEG-3 cells also upregulated functional HLA-B and HLA-C expression. Noteworthy, this lack of IFN-gamma-mediated induction of CIITA was also found to exist in normal trophoblast cells expanded from chorionic villus biopsies. Together, these observations demonstrate that lack of CIITA expression is central to the absence of antigen presentation functions of trophoblast cells." @default.
- W2078697863 created "2016-06-24" @default.
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- W2078697863 date "2000-09-01" @default.
- W2078697863 modified "2023-10-01" @default.
- W2078697863 title "Lack of CIITA expression is central to the absence of antigen presentation functions of trophoblast cells and is caused by methylation of the IFN-γ inducible promoter (PIV) of CIITA" @default.
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- W2078697863 doi "https://doi.org/10.1016/s0198-8859(00)00159-2" @default.
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