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CFTR inhibits the invasion and growth of esophageal cancer cells by inhibiting the expression of NF‐κB

机译:CFTR通过抑制NF-κB的表达来抑制食管癌细胞的侵袭和生长

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摘要

Abstract Our study aimed to explore the function of cystic fibrosis transmembrane conductance regulator (CFTR) in esophageal cancer. Twenty patients with esophageal squamous cell carcinoma (ESCC) and 20 patients with esophageal adenocarcinoma (EA) were enrolled in this study. The levels of CFTR and NF‐κB in tumor tissues and adjacent normal tissues were detected, respectively. The expression of CFTR were detected by qRT‐PCR and Western blot in normal esophageal cell line, esophagus squamous cell, carcinoma cell lines, and EA cell lines, respectively. Effects of CFTR silencing and overexpression on NF‐κB protein expression were detected by Western blot. Transwell assay was performed to detect cell invasion. Mouse tumor model was established and the effect of CFTR inhibitor on tumor growth was examined. The expression of CFTR was downregulated in tumor tissues and cancer cell lines. CFTR silencing promoted the expression of NF‐κB‐p65 and NF‐κB‐p50, and the results of CFTR overexpression were reversed. In addition, CFTR silencing promoted the invasion of cancer cells and tumor growth in mice. Besides that, NF‐κB inhibitor reduced the enhancing effects of CFTR silencing on esophageal cell invasion. We conclude that CFTR inhibits the growth and migration of esophageal cancer cells by downregulating of the NF‐κB protein expression.
机译:摘要我们的研究旨在探讨食管癌中囊性纤维化跨膜电导调节剂(CFTR)的功能。本研究招生了20名食道鳞状细胞癌(ESCC)和20例食管腺癌(EA)患者。分别检测肿瘤组织和邻近正常组织中CFTR和NF-κB的水平。在正常食管细胞系,食道鳞状细胞,癌细胞系和EA细胞系中,QRT-PCR和Western印迹检测CFTR的表达。蛋白质印迹检测CFTR沉默和过表达对NF-κB蛋白表达的影响。进行Transwell测定以检测细胞侵袭。确定了小鼠肿瘤模型,检查了CFTR抑制剂对肿瘤生长的影响。 CFTR的表达在肿瘤组织和癌细胞系中下调。 CFTR沉默促进NF-κB-P65和NF-κB-P50的表达,CFTR过表达的结果逆转。此外,CFTR沉默促进癌细胞和肿瘤生长的侵袭小鼠的侵袭。此外,NF-κB抑制剂还降低了CFTR沉默对食管细胞侵袭的增强作用。我们得出结论,CFTR通过下调NF-κB蛋白表达来抑制食管癌细胞的生长和迁移。

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