Loss of Reprimo and S100A2 expression in human gastric adenocarcinoma.
Reprimo and S100A2 are two newly identified candidate tumor-suppressor genes, which play an important role in the regulation of p53-dependent cell cycle. In this study, we examined the expressions of Reprimo and S100A2 in surgical specimens of gastric adenocarcinoma and correlated these results with pathological and clinical parameters. Tissues were obtained from 100 gastric adenocarcinoma patients that underwent curative gastrectomy. Reprimo and S100A2 expressions were evaluated by immunohistochemical analysis. Loss of Reprimo and S100A2 expressions occurred in 65 and 52% of the patients, respectively. Loss of Reprimo expression was significantly correlated with the depth of tumor invasion (P = 0.000), lymphatic vessel invasion (P = 0.006), and lymph node metastasis (P = 0.000). Loss of S100A2 expression was significantly associated with histological type (P = 0.009), depth of invasion (P = 0.033), lymphatic vessel invasion (P = 0.01), and lymph node metastasis (P = 0.001). In addition, there was a significant positive association between the expressions of Reprimo and S100A2 (P < 0.01). The results suggest that loss of Reprimo and S100A2 expressions occurs frequently in gastric adenocarcinomas. The expressions of Reprimo and S100A2 may be potential biomarkers for gastric adenocarcinomas detection.
Department of Pathology, Zhongnan Hospital, Wuhan University, Wuhan 430071, China. jluo.whu@gmail.com
Jun
J
Luo
Youqing
Y
Zhu
Guifang
G
Yang
Lingling
L
Gong
Bicheng
B
Wang
Huan
H
Liu
D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D016022:Case-Control Studies; D018797:Cell Cycle Proteins / Q000378:metabolism*; D002630:Chemotactic Factors / Q000378:metabolism*; D005260:Female; D005743:Gastrectomy; D005753:Gastric Mucosa / Q000473:pathology; D015972:Gene Expression Regulation, Neoplastic; D006023:Glycoproteins / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009418:S100 Proteins / Q000378:metabolism*; D013274:Stomach Neoplasms / Q000473:pathology* / Q000601:surgery; D055815:Young Adult
D014408:Biomarkers, Tumor; D018797:Cell Cycle Proteins; D002630:Chemotactic Factors; D006023:Glycoproteins; C412566:RPRM protein, human; D009418:S100 Proteins; C098997:S100A2 protein, human