Expression of RUNX3 and miR-130b in gastric carcinoma and clinical significance

Objective To explore the expression of miR-130b and RUNX3mRNA in human gastric carcinoma and the clinical significance. Methods The expression of miR-130b and RUNX3mRNA were detected by RT-PCR in 40 cases of gastric carcinoma and corresponding normal mucosa tissue. The expression of RUNX3 protein was determined by immunohistochemistry SP method. Results The expression of miR-130b was significantly up-regulated in gastric carcinoma than that in the adjacent normal gastric mucosa tissues (2.18 ± 3.75 ) vs.( 2.59 ± 3.45 ),P ＜ 0.05 ; The expression of RUNX3mRNA in gastric carcinoma tissues was significantly lower than that in adjacent normal gastric mucosa tissues( 8.76 ±2.82) vs.( 7.58 ± 2.87 ),P ＜ 0.05.The expression of miR-130b and RUNX3mRNA were positively correlated with lymph node metastasis and clinical stage ( P ＜ 0.05 ) ; No significant association was found between the expression and age,gender,tumor size,distant metastasis and depth of tumor invasion ( P ＞0.05 ).The expression of miR-130b was negatively correlated with RUNX3 protein expression in nuclei and cytoplasm (P ＜ 0.05 ). Conclusions Abnormal expression of miR-130b and RUNX3mRNA correlates with prognosis of gastric carcinoma; Decreased RUNX3 protein expression may contribute to tumourigenesis. Key words: Stomach neoplasms;  Micro RNAs ;  Pathology, clinical;  Prognosis