title: Characterization of ovarian cancer ascites on cell invasion, proliferation, spheroid formation, and gene expression in an in vitro model of epithelial ovarian cancer.
abstract: At least one third of all cases of epithelial ovarian cancer are associated with the production of ascites, although its effect on tumor cell microenvironment remains poorly understood. This study addresses the effect of the heterologous acellular fraction of ovarian cancer-derived ascites on a cell line (OV-90) derived from the chemotherapy-naïve ovarian cancer patient. Ascites were assayed for their effect on cell invasion, growth, and spheroid formation. When compared to either no serum or 5% serum, ascites fell into one of two categories: stimulatory or inhibitory. RNA from OV-90 cells exposed to selected ascites were arrayed on an Affymetrix HG-U133A GeneChip. A supervised analysis identified a number of differentially expressed genes and quantitative polymerase chain reaction validation based on OV-90 cells exposed to 54 independent ascites demonstrated that stimulatory ascites affected the expression of ISGF3G, TRIB1, MKP1, RGS4, PLEC1, and MOSPD1 genes. In addition, TRIB1 expression was shown to independently correlate with prognosis when its expression was ascertained in an independent set of primary cultures established from ovarian ascites. The data support the validity of the strategy to uncover molecular events that are associated with tumor cell behavior and highlight the impact of ascites on the cellular and molecular parameters of ovarian cancer.
authors.affiliation: Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montreal, Quebec, Canada.
authors.forename: Marie-Line
authors.initials: ML
authors.lastname: Puiffe
authors.forename: Cécile
authors.initials: C
authors.lastname: Le Page
authors.forename: Abdelali
authors.initials: A
authors.lastname: Filali-Mouhim
authors.forename: Magdalena
authors.initials: M
authors.lastname: Zietarska
authors.forename: Véronique
authors.initials: V
authors.lastname: Ouellet
authors.forename: Patricia N
authors.initials: PN
authors.lastname: Tonin
authors.forename: Mario
authors.initials: M
authors.lastname: Chevrette
authors.forename: Diane M
authors.initials: DM
authors.lastname: Provencher
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Mes-Masson
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001202:Ascitic Fluid / Q000378:metabolism*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D005260:Female; D015870:Gene Expression / Q000187:drug effects*; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D053208:Kaplan-Meier Estimate; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009375:Neoplasms, Glandular and Epithelial / Q000378:metabolism / Q000401:mortality / Q000473:pathology; D020411:Oligonucleotide Array Sequence Analysis; D010051:Ovarian Neoplasms / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D017346:Protein Serine-Threonine Kinases / Q000096:biosynthesis / Q000037:antagonists & inhibitors; D020133:Reverse Transcriptase Polymerase Chain Reaction; D018874:Spheroids, Cellular / Q000187:drug effects*
chemical_list: D047908:Intracellular Signaling Peptides and Proteins; C493170:TRIB1 protein, human; D017346:Protein Serine-Threonine Kinases