title: Inhibition of transfected PTEN on human colon cancer.
abstract: OBJECTIVE
  To study the inhibitory effect of transfected PTEN on LoVo cells.
  
  
  METHODS
  Human PTEN cDNA was transferred into LoVo cells via lipofectin and PTEN mRNA levels and its expression were analyzed by Western blot and flow cytometry. Before or after transfection, the effects of 5-Fu on inhibiting cell proliferation and inducing apoptosis were measured by flow cytometry, DNA bands and MTT.
  
  
  RESULTS
  PTEN transfection significantly up-regulated PTEN expression in LoVo cells. 5-Fu inhibited cell proliferation and induced apoptosis in transfected LoVo cells.
  
  
  CONCLUSIONS
  Transfected PTEN can remarkably up-regulate PTEN expression in LoVo cells and promote the apoptosis. PTEN transfection is associated with 5-Fu treatment effect and has a cooperatively cytotoxic effect.
authors.affiliation: Second Affiliated Hospital, Shantou University Medical College, Shantou 515031, Guangdong Province, China. smile4612003@yahoo.com.cn
authors.forename: Shou-Shui
authors.initials: SS
authors.lastname: Xu
authors.forename: Wen-Lu
authors.initials: WL
authors.lastname: Shen
authors.forename: Song-Ying
authors.initials: SY
authors.lastname: Ouyang
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D003110:Colonic Neoplasms; D005472:Fluorouracil / Q000494:pharmacology*; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects*; D006801:Humans; D051059:PTEN Phosphohydrolase; D010744:Phosphoric Monoester Hydrolases / Q000235:genetics*; D010957:Plasmids; D012333:RNA, Messenger / Q000378:metabolism; D014162:Transfection; D014407:Tumor Cells, Cultured; D025521:Tumor Suppressor Proteins / Q000235:genetics*
chemical_list: D000903:Antibiotics, Antineoplastic; D012333:RNA, Messenger; D025521:Tumor Suppressor Proteins; D010744:Phosphoric Monoester Hydrolases; D051059:PTEN Phosphohydrolase; C494929:PTEN protein, human; D005472:Fluorouracil