Caprine endometrial stromal cells modulate the effects of steroid hormones on cytokine secretion by endometrial epithelial cells in vitro |
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| Authors: | Xuefeng Qi Yanyan Qu Zhichun Nan Yaping Jin Xianjun Zhao Aihua Wang |
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| Affiliation: | 2. Department of Animal Physiology, Faculty of Biology, University of Warmia and Mazury in Olsztyn;3. Department of Public Health and Epidemiology, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn;4. MSWiA Hospital in Olsztyn, Department of Oncology;5. Department of Human Physiology, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn;1. Department of Histology and Developmental Biology, Pomeranian Medical University, Szczecin, Poland;2. Department of Medical Biology, Pomeranian Medical University, Szczecin, Poland;3. Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Szczecin, Poland;4. Department of Reproduction and Urogynecology, Pomeranian Medical University, Police, Poland;5. Department of Public Health, Pomeranian Medical University, Szczecin, Poland;6. Department of Physiology, Pomeranian Medical University, Szczecin, Poland;7. Department of Neonatal Diseases, Pomeranian Medical University, Szczecin, Poland;8. Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, Szczecin, Poland;2. Animal Reproduction Department, INIA, Madrid;3. NUTEGA Madrid, Spain |
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| Abstract: | The main purpose of this study was to examine the effects of 17β-estradiol (E2) and progesterone (P4) on cytokine secretion by caprine endometrial epithelial cells (EEC) in vitro. Epithelial cells grown alone or in co-culture with stromal cells (ESC) were treated with E2 or P4, or both. Homogeneity of the endometrial cell populations was ascertained immunocytochemically. The quantities of cytokines secreted in this system were assessed by ELISA and their protein expression by Western blot. The exposure of EEC to P4 alone or in combination with E2 significantly increased the amount of TGF-β1, TNF-α and IL-18 secretion, whereas E2 had no effect on the synthesis of these cytokines. When epithelial cells were co-cultured with ESC, the secretion of TGF-β1, TNF-α and IL-18 by EEC significantly increased compared to that by EEC alone. However, the treatment with both steroids decreased the secretion of TNF-α, IL-18 and TGF-β1 by EEC in the presence of ESC. In contrast to TGF-β1, TNF-α and IL-18, the secretion of leukemia inhibitory factor (LIF) by EEC was not affected by E2 and/or P4 either directly or indirectly. The present results indicate that the interactions between caprine endometrial stromal and epithelial cells can modulate the secretion of TGF-β1, TNF-α and IL-18 by EEC exposed to E2 and/or P4 in vitro. |
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