title: Fn14 receptor appears as a modulator of ovarian steroid-related regulation of goat endometrial epithelial cell IL-18 expression.
abstract: OBJECTIVE
  Tumor necrosis factor-like weak inducer of apoptosis (TWEAK)/fibroblast growth factor-inducible 14 (Fn14) interactions affect the regulation of cytotoxic/immunotrophic pathways that are themselves under control of IL-18. The effect of Fn14 on regulation of endometrium IL-18 expression, however, remains unclear.
  The aim was to determine the mode of ovarian steroid action in regulating Fn14 expression by goat endometrial epithelial cells (EECs) in the presence and absence of endometrial stromal cells (ESCs). The possible role of Fn14 on the expression of IL-18 by EECs was also evaluated.
  
  
  RESULTS
  Opposite effects of E2 and/or P4 on the regulation of both Fn14 mRNA and protein expression by EECs were observed in the presence and absence of ESCs. Fn14 knockdown by blocking antibody or siRNA resulted in a decrease of IL-18 mRNA and protein levels in EECs cocultured with ESCs, and no significant difference of the IL-18 mRNA and protein levels in the EECs was observed between steroid treatment group and control group.
  
  
  CONCLUSIONS
  These findings confirm the importance of steroids in controlling Fn14 expression in goat EECs. Furthermore, Fn14 appears as a novel modulator of the steroid-related IL-18 expression in EECs in the presence of ESCs.
authors.affiliation: College of Veterinary Medicine of Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Mingzhu
authors.initials: M
authors.lastname: Lei
authors.forename: Lijuan
authors.initials: L
authors.lastname: Qin
authors.forename: Aihua
authors.initials: A
authors.lastname: Wang
authors.forename: Yaping
authors.initials: Y
authors.lastname: Jin
authors.forename: Xianjun
authors.initials: X
authors.lastname: Zhao
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Qi
mesh_terms: D000818:Animals; D018920:Coculture Techniques; D004717:Endometrium / Q000378:metabolism*; D004847:Epithelial Cells / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation / Q000502:physiology*; D006041:Goats; D020382:Interleukin-18 / Q000096:biosynthesis*; D010053:Ovary / Q000378:metabolism*; D018124:Receptors, Tumor Necrosis Factor / Q000378:metabolism*; D013256:Steroids / Q000378:metabolism*; D017154:Stromal Cells / Q000378:metabolism; D000074050:TWEAK Receptor
chemical_list: D020382:Interleukin-18; D018124:Receptors, Tumor Necrosis Factor; D013256:Steroids; D000074050:TWEAK Receptor
keywords: Fn14; IL-18; endometrium; goat; ovarian steroid