title: Relaxin and prostaglandin E(2) regulate interleukin 11 during human endometrial stromal cell decidualization.
abstract: Decidualization of endometrial stromal cells and IL-11 signaling are essential for embryo implantation in the mouse. We investigated the effects of relaxin (RLX) and prostaglandin E(2) (PGE(2)) on IL-11 secretion by human endometrial stromal cells (HESC) and during cAMP or medroxyprogesterone acetate (P)-induced decidualization. cAMP-decidualized HESC secreted high levels of IL-11. RLX, cAMP, or PGE(2) increased IL-11 mRNA and IL-11 secretion, with maximal response to RLX and cAMP. Addition of the cAMP/protein kinase A inhibitor Rp-adenosine-3,5-cyclic-monophosphorothioate to either RLX- or PGE(2)-treated cells decreased IL-11 secretion. Indomethacin treatment decreased IL-11 secretion, which was largely restored by cotreatment with PGE(2) or RLX. Cotreatment of HESC with RLX, PGE(2), or cAMP and estrogen plus P down-regulated IL-11 mRNA and IL-11 secretion at 24 h, before secretion of prolactin (decidualization marker). Addition of W147AIL-11 (IL-11 signaling inhibitor) reduced prolactin secretion stimulated by RLX or PGE(2) and estrogen plus P. This is the first demonstration that cAMP-decidualized HESC secrete IL-11 and that IL-11 mRNA and IL-11 secretion are regulated by RLX and PGE(2), partly via a cAMP/protein kinase A-dependent pathway. Blocking IL-11 signaling reduced RLX+P- or PGE(2)+P-induced decidualization, suggesting that RLX and PGE(2) act via IL-11. This is important in understanding implantation and regulation of fertility.
authors.affiliation: Prince Henry's Institute of Medical Research, P.O. Box 5152, Clayton, VIC 3168, Australia. evdokia.dimitriadis@phimr.monash.edu.au
authors.forename: E
authors.initials: E
authors.lastname: Dimitriadis
authors.forename: C
authors.initials: C
authors.lastname: Stoikos
authors.forename: M
authors.initials: M
authors.lastname: Baca
authors.forename: W D
authors.initials: WD
authors.lastname: Fairlie
authors.forename: J E
authors.initials: JE
authors.lastname: McCoubrie
authors.forename: L A
authors.initials: LA
authors.lastname: Salamonsen
mesh_terms: D000818:Animals; D018929:Cell Culture Techniques; D000242:Cyclic AMP / Q000031:analogs & derivatives* / Q000494:pharmacology; D003656:Decidua / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D015232:Dinoprostone / Q000494:pharmacology*; D004717:Endometrium / Q000166:cytology* / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005260:Female; D006801:Humans; D007213:Indomethacin / Q000494:pharmacology; D017370:Interleukin-11 / Q000378:metabolism*; D012065:Relaxin / Q000494:pharmacology*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017154:Stromal Cells / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D013552:Swine; D013873:Thionucleotides / Q000494:pharmacology
chemical_list: D004791:Enzyme Inhibitors; D017370:Interleukin-11; D013873:Thionucleotides; C015929:8-((4-chlorophenyl)thio)cyclic-3',5'-AMP; D012065:Relaxin; D000242:Cyclic AMP; D015232:Dinoprostone; D007213:Indomethacin