在口腔舌鳞状细胞癌中,蜗牛蛋白和蛞蝓蛋白通过miR-101介导的EZH2轴协同作用于上皮-间质转化和肿瘤转移。

Snail and Slug collaborate on EMT and tumor metastasis through miR-101-mediated EZH2 axis in oral tongue squamous cell carcinoma.

作者信息

Zheng Min, Jiang Ya-ping, Chen Wei, Li Kai-de, Liu Xin, Gao Shi-yu, Feng Hao, Wang Sha-sha, Jiang Jian, Ma Xiang-rui, Cen Xiao, Tang Ya-jie, Chen Yu, Lin Yun-feng, Tang Ya-ling, Liang Xin-hua

机构信息

State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China.

Department of Stomatology, Zhoushan Hospital, Zhoushan, Zhejiang 316000, People's Republic of China.

出版信息

Oncotarget. 2015 Mar 30;6(9):6797-810. doi: 10.18632/oncotarget.3180.

Abstract

microRNAs(miRNAs) can regulate epithelial-mesenchymal transition (EMT) through transcription factors, however, little is known whether EMT transcription factors can modulate miRNAs and further induce EMT and cancer metastasis. Here we show that overexpression of Snail and Slug leads to a mesenchymal phenotype and morphology and enhances cell invasion along with stem cell properties in squamous cell carcinoma of oral tongue (OTSCC) cells. Repression of miR-101 expression by Snail and Slug is essential for Snail/Slug-induced malignant phenotypes. The suppression of miR-101 subsequently activates EZH2, the sole histone methyltransferase, inducing EMT, migration and invasion of OTSCC cells. Importantly, co-overexpression of Slug and Snail correlates with poor survival and elevated EZH2 expression in two independent patient cohorts of OTSCC specimens. These findings defined a Snail and Slug/miR-101/EZH2 pathway as a novel regulatory axis of EMT-mediated-microRNA signaling.

摘要

微小RNA(miRNA)可通过转录因子调控上皮-间质转化(EMT),然而,关于EMT转录因子能否调节miRNA并进一步诱导EMT和癌症转移,人们知之甚少。在此我们表明,Snail和Slug的过表达导致间充质表型和形态,并增强口腔舌鳞状细胞癌(OTSCC)细胞的细胞侵袭能力以及干细胞特性。Snail和Slug对miR-101表达的抑制对于Snail/Slug诱导的恶性表型至关重要。miR-101的抑制随后激活了唯一的组蛋白甲基转移酶EZH2,诱导OTSCC细胞发生EMT、迁移和侵袭。重要的是,在两个独立的OTSCC标本患者队列中,Slug和Snail的共过表达与较差的生存率以及EZH2表达升高相关。这些发现确定了Snail和Slug/miR-101/EZH2通路作为EMT介导的微小RNA信号传导的新型调控轴。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8df6/4466650/7d1010ba6c34/oncotarget-06-6794-g001.jpg

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