title: Suppression of IL-1beta-induced COX-2 expression by trichostatin A (TSA) in human endometrial stromal cells.
abstract: OBJECTIVE
  Over-production of cyclooxygenase-2 (COX-2) plays an important role in the positive feedback loop that leads to proliferation and inflammation in endometriosis. Following our observation that histone deacetylase inhibitors (HDACIs) trichostatin A (TSA) and valproic acid (VPA) can suppress proliferation of endometrial stromal cells, we sought to determine whether TSA suppresses IL-1beta-induced COX-2 expression in endometrial stromal cells.
  
  
  METHODS
  In vitro study using a recently established immortalized endometrial stromal cell line. The stromal cells were pretreated with TSA before stimulation with IL-1beta, and COX-2 gene and protein expression was measured by real-time quantitative RT-PCR and Western blot analysis, respectively.
  
  
  RESULTS
  IL-1beta stimulated COX-2 expression in a concentration-dependent manner in endometrial stromal cells. The induced COX-2 gene and protein expression were suppressed by TSA pretreatment.
  
  
  CONCLUSIONS
  TSA suppresses IL-1beta-induced COX-2 gene and protein expression in endometrial stromal cells. This finding, coupled with the findings that TSA and another HDACI, valproic acid, suppress proliferation and induce cell cycle arrest, suggests that HDACIs are a promising class of compound that has therapeutic potential for endometriosis.
authors.affiliation: Department of Pediatrics, Medical College of Wisconsin, 8701 Watertown Plank Road, MS 756, Milwaukee, WI 53226-0509, USA.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
authors.forename: Sun-Wei
authors.initials: SW
authors.lastname: Guo
mesh_terms: D002453:Cell Cycle / Q000187:drug effects; D002460:Cell Line; D051546:Cyclooxygenase 2 / Q000187:drug effects* / Q000378:metabolism; D052246:Cyclooxygenase 2 Inhibitors / Q000494:pharmacology; D004715:Endometriosis / Q000188:drug therapy; D004717:Endometrium / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects; D056572:Histone Deacetylase Inhibitors; D006801:Humans; D006877:Hydroxamic Acids / Q000494:pharmacology*; D053583:Interleukin-1beta / Q000502:physiology; D017154:Stromal Cells / Q000187:drug effects* / Q000276:immunology
chemical_list: D052246:Cyclooxygenase 2 Inhibitors; D056572:Histone Deacetylase Inhibitors; D006877:Hydroxamic Acids; D053583:Interleukin-1beta; C012589:trichostatin A; D051546:Cyclooxygenase 2; C496540:PTGS2 protein, human