ArticleInternational journal of molecular sciences2025
Indoleamine 2,3-Dioxygenase Regulates Placental Trophoblast Cell Invasion.
Article in International journal of molecular sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
To clarify the physiological importance of the tryptophan catabolizing enzyme, indoleamine 2,3-dioxygenase, in human pregnancy, we have studied how the expression of this enzyme controls extravillous cytotrophoblast invasion into the decidua. We have generated an Ishikawa cell line stably transfected with a plasmid encoding indoleamine 2,3-dioxygenase under the control of a tetracycline inducible promoter. Using this Ishikawa cell line and extravillous cytotrophoblast cell line, HTR-8/SVneo, we developed a quantitative in vitro trophoblast invasion assay. When trophoblast cells were cultured on a layer of Ishikawa cells expressing indoleamine 2,3-dioxygenase, tryptophan degradation was enhanced and trophoblast cell invasion was suppressed. These findings suggest that indoleamine 2,3-dioxygenase expressed in the decidua may play a role in regulating trophoblast invasion.
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