Lu SM, Chen MR, Xuan JY, Liu LN, Lv S, Li Y. Relationship between STAT3 activation and epithelial-mesenchymal transition in gastric carcinoma.
Shijie Huaren Xiaohua Zazhi 2013;
21:2748-2753. [DOI:
10.11569/wcjd.v21.i26.2748]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To detect the expression of signal transducer and activator of transcription 3 (STAT3) and phosphorylated STAT3 (p-STAT3) in gastric carcinoma (GC) and to analyze their relationship with epithelial-mesenchymal transition (EMT), tumor invasion and metastasis.
METHODS: The expression of STAT3, p-STAT3, E-cadherin and Vimentin proteins in 53 GC specimens and matched normal gastric mucosal specimens was detected by immunohistochemistry. The correlation of expression of STAT3, p-STAT3, E-cadherin and Vimentin proteins with clinicopathological parameters of GC was analyzed.
RESULTS: The positive rates of STAT3, p-STAT3 and Vimentin expression were significantly higher and that of E-cadherin was significantly lower in GC than that in normal gastric mucosal tissues (all P < 0.01). The expression of STAT3, p-STAT3, E-cadherin and Vimentin proteins was significantly correlated with tumor differentiation, depth of invasion, lymph node metastasis and clinical stage (all P < 0.05), but not with gender, age, tumor size (all P > 0.05). STAT3 and p-STAT3 expression was negatively correlated with E-cadherin expression (r = -0.360, -0.335; P = 0.008, 0.014), but positively with Vimentin expression (r = 0.443, 0.346; P = 0.001, 0.011) in GC.
CONCLUSION: STAT3 and p-STAT3 protein expression is up-regulated in GC, and up-regulation of STAT3 and p-STAT3 protein expression in GC is significantly correlated with E-cadherin and Vimentin expression. These findings suggest that EMT may be mediated by the activation of the STAT3 signaling pathway.
Collapse