title: Expression of phosphatase of regenerating liver 1 and 3 mRNA in esophageal squamous cell carcinoma.
abstract: BACKGROUND
  Phosphatase of regenerating liver (PRL) 3 messenger RNA (mRNA) was reported to express in human colorectal, gastric, ovarian, breast, and hepatic cancers.
  
  
  OBJECTIVE
  To examine the expression of PRL-1 and PRL-3 mRNAs in human esophageal squamous cell carcinoma (ESCC).
  
  
  METHODS
  Expression of PRL-1 and PRL-3 mRNA was examined with reverse transcriptase-polymerase chain reaction in fresh tissue collected from 40 cases of ESCC with matched lymph node metastasis in 21 cases. The association of expression of PRL-1 and PRL-3 mRNAs with clinicopathologic parameters was analyzed.
  
  
  RESULTS
  The frequencies of PRL-1 and PRL-3 mRNA expression were significantly higher in ESCC than in normal esophageal tissue (P = .001; P = .01) and also significantly higher in ESCC with lymph node metastasis than in those without lymph node metastasis (P = .01; P = .03). The levels of PRL-1 and PRL-3 mRNA expression were significantly higher in ESCC with lymph node metastasis than in those without lymph node metastasis (P = .04; P = .04). The frequencies and levels of PRL-1 and PRL-3 mRNA expression were correlated with the later stages but not with tumor differentiation, tumor location in the esophagus, patient's sex, and age.
  
  
  CONCLUSIONS
  PRL-1 and PRL-3 mRNAs may be involved in and used to predict the metastasis of ESCC. The possibility of using PRL-1 and PRL-3 as the therapeutical target is also discussed.
authors.affiliation: Department of Pathology, First Teaching Hospital, Henan Key Lab for Tumor Pathology, Zhengzhou University, Henan, China.
authors.forename: Yu-Qiong
authors.initials: YQ
authors.lastname: Liu
authors.forename: Hui-Xiang
authors.initials: HX
authors.lastname: Li
authors.forename: Xi
authors.initials: X
authors.lastname: Lou
authors.forename: Jun-Yi
authors.initials: JY
authors.lastname: Lei
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000201:enzymology* / Q000556:secondary; D018797:Cell Cycle Proteins / Q000235:genetics*; D004938:Esophageal Neoplasms / Q000201:enzymology* / Q000473:pathology; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000235:genetics*; D017027:Protein Tyrosine Phosphatases / Q000235:genetics*; D012333:RNA, Messenger / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D018797:Cell Cycle Proteins; D008565:Membrane Proteins; D009363:Neoplasm Proteins; D012333:RNA, Messenger; C490198:PTP4A1 protein, human; C484730:PTP4A3 protein, human; D017027:Protein Tyrosine Phosphatases