Acta Anatomica Sinica ›› 2018, Vol. 49 ›› Issue (2): 204-211.doi: 10.16098/j.issn.0529-1356.2018.02.011

• Cancer Biology • Previous Articles     Next Articles

Effect and mechanism of trefoil factor 3 on epithelial-mesenchymal transition of papillary thyroid carcinoma TPC-1 cells

LIN Xu1 WANG Zhi-yong1 WU Jing-fang 1* ZHANG Wen-jing1 ZHANG Jing1 XUE Gang 2*   

  1. 1. Department of Histology and Embryology,Hebei North University; 2. Department of Otorhinolaryngology Head and Neck Surgery,the First Affiliated Hospital of Hebei North University, Hebei Zhangjiakou 075000,China
  • Received:2017-06-12 Revised:2017-09-10 Online:2017-04-06 Published:2018-04-06
  • Contact: WU Jing-fang;XUE Gang E-mail:wjfxg@163.com

Abstract:

Objective To explore the roles and mechanisms of silence trefoil factor 3(TFF3) on migration, invasion,clony formation and epithelial-mesenchymal transition of thyroid papillary carcinoma TPC-1 cells. Methods Expressions of Snail and TFF3 in tissue microarrays of thyroid papillary carcinoma were analysed by immunohistochemistry. Invasion assays, wound healing assays and colony formation tests were performed to detect the effects of TFF3 on migration, invasion and clony formation of TPC-1 cells. Epithelial-mesenchymal transition(EMT) markers and regulatory molecules were detected by Real-time PCR assay,Western blotting and immunocytochemistry in TPC-1 cells and mitogen-activated protein kinase (MAPK) signalling pathway related proteins were examined by Western blotting and immunocytochemistry. Results In 31 cases of papillary thyroid carcinoma, Snail and TFF3 positive signals were observed in the cytoplasm of papillary throid carcinoma(PTC),and were negative in the para-carcinoma.The expression of Snail in papillary thyroid carcinoma showed positive correlation with the expression of TFF3 protein(r=0.8450,P<0.05). Siliencing TFF3 expression markedly inhibited the ability of migration,invasion and clony formation in vitrovia suppressing of the MAPK signalling pathway and inhibited the process of EMT(P<0.05 or P<0.01). Conclusion Knockdown of TFF3 inhibits TPC-1 cells migration,invasion clony formation and EMT related proteins epression through suppressing MAPK/ERK signalling pathway.

Key words: Trefoil factor 3, Epithelial-mesenchymal transition, Immunohistochemistry, Western blotting, Real-time PCR, Human