Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
Biomed Pharmacother. 2015 Aug;74:89-94. doi: 10.1016/j.biopha.2015.07.010. Epub 2015 Aug 6.
BACKGROUND: Esophageal squamous cell carcinoma (ESCC) is an aggressive tumor with rapid progression, high recurrence and metastasis rate. Besides, the 5-year survival rate of ESCC remains dismal despite improvements in treatments having developed a lot. That is because the cellular basis of ESCC has not yet been fully understood. Forkhead box family membranes possess various kinds of properties as they mediate apoptosis, cell cycle arrest, autophagy, senescence and so on. Foxhead box Q1 (FOXQ1), which has a major impact on several kinds of tumor forming and metastasis, while whether it triggers ESCC remains largely obscure. METHODS: To determine whether aberrant FOXQ1 expression in esophageal cancer, protein level and mRNA level of specimens of cancerous tissues and adjacent non-cancerous tissues were determined by western blot and real-time PCR. Then we overexpressed or knockdowned FOXQ1 in EC9706 cell; cell growth curve and colony formation were analyzed. Cell invasion ability was analyzed by migration chambers. Reporter gene assay was used to study the transcriptional regulation activity. RESULTS: FOXQ1 was highly expressed in esophageal cancerous tissues compared with adjacent non-cancerous tissues. FOXQ1 overexpression promotes ESCC tumor cell proliferation, whereas FOXQ1 silencing prevents ESCC tumor cell proliferation. FOXQ1 promotes ESCC metastasis via negatively modulation CDH1. CDH1 silencing could rescue the migratory ability which was blemished by FOXQ1 silencing. FOXQ1 could act as transcriptional repressor which binds to the promoter of CDH1 and blocks its transcription. CONCLUSIONS: In this study, we identified FOXQ1 as an oncogene to promote ESCC tumor cell proliferation and metastasis by negatively regulating CDH1 in EC9706 cell. Besides, we deciphered a previously unidentified mechanism of ESCC progression and metastasis.
背景:食管鳞状细胞癌(ESCC)是一种侵袭性肿瘤,具有进展迅速、复发和转移率高的特点。尽管治疗方法有了很大的改进,但 ESCC 的 5 年生存率仍然很差。这是因为 ESCC 的细胞基础尚未完全被理解。叉头框家族膜具有多种特性,它们介导细胞凋亡、细胞周期停滞、自噬、衰老等。Foxhead box Q1(FOXQ1)对多种肿瘤的形成和转移有重要影响,但其是否引发 ESCC 仍不清楚。
方法:为了确定食管癌细胞中 FOXQ1 表达是否异常,通过 Western blot 和实时 PCR 测定了癌组织和相邻非癌组织标本的蛋白水平和 mRNA 水平。然后我们在 EC9706 细胞中过表达或敲低 FOXQ1;分析细胞生长曲线和集落形成。通过迁移室分析细胞侵袭能力。采用报告基因检测研究转录调控活性。
结果:FOXQ1 在食管癌组织中的表达明显高于相邻的非癌组织。FOXQ1 的过表达促进 ESCC 肿瘤细胞的增殖,而 FOXQ1 的沉默则阻止 ESCC 肿瘤细胞的增殖。FOXQ1 通过负调控 CDH1 促进 ESCC 转移。CDH1 的沉默可以挽救 FOXQ1 沉默所破坏的迁移能力。FOXQ1 可以作为转录抑制因子,与 CDH1 的启动子结合并阻断其转录。
结论:在这项研究中,我们确定 FOXQ1 是一种致癌基因,通过负调控 EC9706 细胞中的 CDH1 促进 ESCC 肿瘤细胞的增殖和转移。此外,我们揭示了 ESCC 进展和转移的一个以前未被识别的机制。
Biomed Pharmacother. 2015-8-6
Biomed Pharmacother. 2015-8-3
J Exp Clin Cancer Res. 2015-1-22
Cancer Metastasis Rev. 2025-1-8
Curr Cancer Drug Targets. 2024
BMC Med Genomics. 2021-2-27