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Oncostatin M inhibits decidualization of normal human endometrial stromal cells

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It is well known that oncostatin M binds and activates leukemia inhibitory factor-specific receptors while leukemia inhibitory factor cannot bind oncostatin M-specific receptors. In this study, the differential effects of oncostatin M and leukemia inhibitory factor on cell survival and decidualization of normal human endometrial stromal cells were investigated by using 8-Br-cAMP-induced decidualization assay. Oncostatin M did not affect the viable cell numbers or the prolactin release of unstimulated stromal cells. However, oncostatin M dose-dependently suppressed prolactin releases from 8-Br-cAMP-stimulating stromal cells but enhanced their viable cell numbers. Although oncostatin M significantly enhanced viable cell numbers of 8-Br-cAMP-stimulated stromal cells, it did not affect prolactin secretion from 8-Br-cAMP-induced decidualized cells. Leukemia inhibitory factor significantly enhanced viable cell numbers of 8-Br-cAMP-stimulating cells in a dose-dependent manner as did oncostatin M, while leukemia inhibitory factor did not show any significant suppression of PRL secretion from 8-Br-cAMP-stimulating cells. These results indicate that oncostatin M inhibits the 8-Br-cAMP-induced decidualization process via oncostatin M-specific receptors and that oncostatin M and leukemia inhibitory factor enhance cell survival of 8-Br-cAMP-stimulated prolactin-non-secreting stromal cells mainly via leukemia inhibitory factor receptors. Thus, oncostatin M may autoregulate human endometrial stromal cell survival and decidualization in a paracrine manner.
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Document Type: Research Article

Affiliations: Department of Obstetrics and Gynecology, Wakayama Medical University, Wakayama 641-8510, Japan., Email: [email protected]

Publication date: May 1, 2003

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  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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