title: [Hydrocamptothecin promotes the mRNA expression of Wnt signaling inhibitor DKK-1].
abstract: OBJECTIVE
  To investigate the effects of hydrocamptothecin on the expression of Wnt signaling pathway inhibitor DKK-1 in tumor cells.
  
  
  METHODS
  Human HepG2, Hep3B, LoVo and U251 cells were treated with the antitumor drug Hydrocamptothecin. DKK-1 mRNA expression in the cells was detected with RT-PCR, and beta-catenin expression was measured by fluorescence-activated cell sorting (FACS).
  
  
  RESULTS
  DKK mRNA in Hep3B, HepG2, LoVo and U251 cells was significantly increased after hydrocamptothecin treatment for 24 h, and the percentage of beta-catenin-positive cells and fluorescence intensity for beta-catenin expression was lowered in the cells after the treatment.
  
  
  CONCLUSIONS
  Hydrocamptothecin promotes mRNA expression of Wnt signaling pathway inhibitor DKK-1 in Hep3B, HepG2, LoVo and U251 cells.
authors.affiliation: Department of Pharmacy, Nanfang Hospital, Guangzhou 510515, China. lalei88@163.com
authors.forename: Lei
authors.initials: L
authors.lastname: LA
authors.forename: Wu
authors.initials: W
authors.lastname: Ban
authors.forename: Jin-jun
authors.initials: JJ
authors.lastname: Rao
authors.forename: Shu-guang
authors.initials: SG
authors.lastname: Wu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology; D002166:Camptothecin / Q000031:analogs & derivatives / Q000494:pharmacology*; D045744:Cell Line, Tumor; D015179:Colorectal Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D005434:Flow Cytometry; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000096:biosynthesis* / Q000235:genetics; D008113:Liver Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015398:Signal Transduction / Q000187:drug effects*; D051153:Wnt Proteins / Q000378:metabolism*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; C501126:DKK1 protein, human; D036341:Intercellular Signaling Peptides and Proteins; D012333:RNA, Messenger; D051153:Wnt Proteins; D002166:Camptothecin