title: Expression of PSCA, PIWIL1, and TBX2 in endometrial adenocarcinoma.
abstract: BACKGROUND
  Endometrial cancer is the 4th most common gynecological cancer. The expression of prostate stem cell antigen (PSCA), piwi-like 1 (PIWIL1), and T-box 2 (TBX2) in endometrial cancer remains to be elucidated.
  
  
  METHODS
  The expression of PSCA, PIWIL1, and TBX2 was examined using the streptavidin-peroxidase method in 64 endometrial endometrioid adenocarcinoma (EAC) and paired normal endometrium (NE) samples from the Shaanxi Province in China.
  
  
  RESULTS
  Positive expression rates of PSCA, PIWIL1, and TBX2 were 75% (48/64), 25% (16/64), and 56% (36/64), respectively in EACs, but 5% (3/64), 6% (4/64), and 2% (1/64), respectively in NEs. The difference was statistically significant (p < 0.05). PSCA was positively correlated with TBX2 (p = 0.003) but not PIWIL1 (p = 0.188). PIWIL1 was positively correlated with TBX2 (p = 0.003). PSCA was positively correlated with age, tumor grade, and lymph node metastasis (p < 0.05). TBX2 had an association with lymph node metastasis (p = 0.014). PIWIL1 was not associated with clinicopathological features (p > 0.05).
  
  
  CONCLUSIONS
  We report the first analysis of PSCA, PIWIL1, and TBX2 expression in EAC. Our findings suggest that PSCA and TBX2 might be candidate targets for cancer therapy, and have helped us further understand the carcinogenesis of endometrial cancer.
authors.affiliation: The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi Province, China. lwk2001@263.net
authors.forename: Wen-Kang
authors.initials: WK
authors.lastname: Liu
authors.forename: Xiang-Yang
authors.initials: XY
authors.lastname: Jiang
authors.forename: Zhen-Xi
authors.initials: ZX
authors.lastname: Zhang
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics* / Q000473:pathology; D000328:Adult; D000367:Age Factors; D000368:Aged; D000951:Antigens, Neoplasm; D060565:Argonaute Proteins; D002471:Cell Transformation, Neoplastic / Q000235:genetics / Q000473:pathology; D016889:Endometrial Neoplasms / Q000235:genetics* / Q000473:pathology; D004717:Endometrium / Q000473:pathology; D005260:Female; D058851:GPI-Linked Proteins; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics*; D006801:Humans; D007124:Immunoenzyme Techniques; D008207:Lymphatic Metastasis / Q000473:pathology; D008562:Membrane Glycoproteins / Q000235:genetics*; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000235:genetics*; D011506:Proteins / Q000235:genetics*; D020825:T-Box Domain Proteins / Q000235:genetics*
chemical_list: D000951:Antigens, Neoplasm; D060565:Argonaute Proteins; D058851:GPI-Linked Proteins; D008562:Membrane Glycoproteins; D009363:Neoplasm Proteins; C421088:PIWIL1 protein, human; C110843:PSCA protein, human; D011506:Proteins; D020825:T-Box Domain Proteins; C108625:TBX1 protein, human