Tollip参与Src家族酪氨酸激酶Fyn在人食管鳞状细胞癌中负调控机制

目的 探讨人食管鳞状细胞癌中Tollip对Src家族酪氨酸激酶Fyn表达的负调控机制.方法 收集3例新鲜食管鳞状细胞癌组织(ESCC)和食管正常黏膜上皮组织(UNR),采用免疫印迹法分析Tollip蛋白表达水平的变化.同时转染人Tollip质粒DNA人TE1细胞株中观察其对Fyn表达的影响.结果　免疫印迹结果　显示食管鳞癌组织Tollip蛋白表达低于食管正常黏膜组织.转染Tollip质粒DNA可以降低人食管鳞状细胞癌TE1细胞中Fyn的表达.结论 Tollip可能是人食管鳞状细胞癌中Src家族酪氨酸激酶ryn的负调控因子,在食管鳞状细胞癌的发生发展过程中起重要作用.

Abstract：

Objective To determine the relationship between Src family tyrosine kinases Fyn expression and Toll-interacting protein ( Tollip ) in human esophageal squamous cell carcinoma ( ESCC ).Methods The Tollip expression was detected in 3 cases of ESCC and compared to the unremarkable epithelium by Western blotting. Tollip plasmid DNA ( 1 μg) was transfected into TE1 cells and the Fyn/Tollip expression was examined by Western blotting. Results The Tollip expression level was lower in ESCC group than in UNR group. Tollip decreased Fyn protein expression in TE1 cells. Conclusion Tollip may act as a negative regulator of Fyn in human ESCC, and play an important role in human ESCC progress.

Toll-interacting protein down-regulates src family tyrosine kinases fyn expression in human esophageal squamous cell carcinoma

Objective To determine the relationship between Src family tyrosine kinases Fyn expression and Toll-interacting protein ( Tollip ) in human esophageal squamous cell carcinoma ( ESCC ).Methods The Tollip expression was detected in 3 cases of ESCC and compared to the unremarkable epithelium by Western blotting. Tollip plasmid DNA ( 1 μg) was transfected into TE1 cells and the Fyn/Tollip expression was examined by Western blotting. Results The Tollip expression level was lower in ESCC group than in UNR group. Tollip decreased Fyn protein expression in TE1 cells. Conclusion Tollip may act as a negative regulator of Fyn in human ESCC, and play an important role in human ESCC progress.