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Myeloperoxidase enhances the migration and invasion of human choriocarcinoma JEG-3 cells.

ABSTRACT: Myeloperoxidase (MPO) is one of the most abundant proteins in neutrophil granules. It catalyzes the production of reactive oxygen species, which are important in inflammation and immune defense. MPO also binds to several proteins, lipids, and DNA to alter their function. MPO is present at the feto-maternal interface during pregnancy, where neutrophils are abundant. In this study, we determined the effect of MPO on JEG-3 human choriocarcinoma cells as a model of extravillous trophoblasts (EVTs) during early pregnancy. We found that MPO was internalized by JEG-3 cells and localized to the cytoplasm and nuclei. MPO internalization and activity enhanced JEG-3 cell migration and invasion, whereas this effect was impaired by pre-treating cells with heparin, to block cellular uptake, and MPO-activity inhibitor 4-ABAH. This study identifies a novel mechanism for the effect of MPO on EVT function during normal pregnancy and suggests a potential role of MPO in abnormal pregnancies.

SUBMITTER: Mihalic ZN 

PROVIDER: S-EPMC10556814 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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Myeloperoxidase enhances the migration and invasion of human choriocarcinoma JEG-3 cells.

Mihalic Z N ZN   Kloimböck T T   Cosic-Mujkanovic N N   Valadez-Cosmes P P   Maitz K K   Kindler O O   Wadsack C C   Heinemann A A   Marsche G G   Gauster M M   Pollheimer J J   Kargl J J  

Redox biology 20230919

Myeloperoxidase (MPO) is one of the most abundant proteins in neutrophil granules. It catalyzes the production of reactive oxygen species, which are important in inflammation and immune defense. MPO also binds to several proteins, lipids, and DNA to alter their function. MPO is present at the feto-maternal interface during pregnancy, where neutrophils are abundant. In this study, we determined the effect of MPO on JEG-3 human choriocarcinoma cells as a model of extravillous trophoblasts (EVTs) d  ...[more]

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