Abstract
In order to elucidate the mechanisms that ensure survival of the allogeneic fetus, we are investigating the expression pattern of genes that are involved in peripheral self-tolerance in tissues at the maternal-fetal interface. Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) is a negative regulator of T cell activation and may modulate peripheral self-tolerance. Previously, we reported the preferential transmission of maternally-inherited shorter alleles at a 3'-UTR microsatellite locus to liveborn children, but random transmission of paternally-inherited alleles, suggesting that CTLA-4 may be involved in the maintenance of tolerance at the maternal-fetal interface. In this report, we demonstrate that CTLA-4 mRNA and protein are indeed expressed in fetal tissues at the maternal-fetal interface throughout gestation.
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