title: Anti-tumor activity of histone deacetylase inhibitors and the effect on ATP-binding cassette in ovarian carcinoma cells.
abstract: BACKGROUND
  Ovarian cancer is of worldwide importance, and has a significantly high mortality rate due to therapy failure. Drug resistance might be one of most importance factors. Histone deacetylase inhibitors (HDACi) have been reported to be a new class of promising anti-tumor agents, thus this study aimed to investigate the effect of HDAC on the chemo-resistance genes of human ovarian carcinoma cell lines.
  
  
  METHODS
  The expressions of ATP binding cassette (ABC) transporter genes, multidrug-resistant protein (MDR1) and multidrug resistance-associated proteins (MRP1 and 2) of ovarian cancer cell lines OC-109 and SK-OV-3 after HDACi treatment were determined.
  
  
  RESULTS
  HDACi, including sodium butyrate (NaB), suberoylanilide hydroxamic acid (SAHA) and trichostatin A (TSA) reduced ovarian cancer cell viability from 4.4% to 68.8%, in both dose- and time-dependent manners. The effect of HDACi on MDR1, MRP1, and MRP2 showed induced expression of MDR1 mRNA, but reduced mRNA expression of MRP1 and MRP2.
  
  
  CONCLUSIONS
  The effect of HDACi on the reduced viability of ovarian cancer cell lines, concomitant with the induced expression of MDR1 and reduced expression of MRP1 and 2, might provide additional benefits in the management of ovarian cancers in the future.
authors.affiliation: Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, and National Yang-Ming University School of Medicine Taipei, Taiwan. kcchao@vghtpe.gov.tw
authors.forename: K C
authors.initials: KC
authors.lastname: Chao
authors.forename: C C
authors.initials: CC
authors.lastname: Chang
authors.forename: M S
authors.initials: MS
authors.lastname: Yen
authors.forename: P H
authors.initials: PH
authors.lastname: Wang
mesh_terms: D018528:ATP-Binding Cassette Transporters / Q000235:genetics*; D000970:Antineoplastic Agents / Q000494:pharmacology*; D002087:Butyrates / Q000494:pharmacology; D045744:Cell Line, Tumor; D005260:Female; D056572:Histone Deacetylase Inhibitors / Q000494:pharmacology*; D006801:Humans; D006877:Hydroxamic Acids / Q000494:pharmacology; D010051:Ovarian Neoplasms / Q000188:drug therapy* / Q000473:pathology
chemical_list: D018528:ATP-Binding Cassette Transporters; D000970:Antineoplastic Agents; D002087:Butyrates; D056572:Histone Deacetylase Inhibitors; D006877:Hydroxamic Acids; C012589:trichostatin A