MiR-338-5p通过靶向EGFR/ERK信号通路抑制表皮生长因子诱导的胰腺癌细胞上皮-间质转化

MiR-338-5p Inhibits EGF-Induced EMT in Pancreatic Cancer Cells by Targeting EGFR/ERK Signaling.

作者信息

Sun Jian, Chen Lin, Dong Ming

机构信息

Department of Gastrointestinal Surgery, The First Hospital, China Medical University, Shenyang, China.

出版信息

Front Oncol. 2021 Apr 15;11:616481. doi: 10.3389/fonc.2021.616481. eCollection 2021.

Abstract

The epidermal growth factor (EGF) pathway plays critical roles during cancer cell epithelial-mesenchymal transition (EMT) process and metastasis. Epidermal growth factor receptor (EGFR), as one of the important receptors of EGF, undergoes autophosphorylation with the stimulation of EGF and activates MAPK/ERK, PI3K/Akt/mTOR, and other pathways. Here, we identified EGFR was a target of miR-338-5p. Upon EGF treatment, overexpression of miR-338-5p not only downregulated EGFR expression and inhibited MAPK/ERK signaling, but also inhibited EMT and metastasis process of pancreatic cancer (PC) cells. In the clinical pathological analysis, miR-338-5p was significantly down-regulated in 44 pairs PC tissues and its expression was negatively associated with lymph node metastasis and AJCC stage. Furthermore, Overexpression of EGFR partially reversed the protective effect of miR-338-5p overexpression on EGF-mediated migration and invasion in PC cells. Taken together, miR-338-5p controls EGF-mediated EMT and metastasis in PC cells by targeting EGFR/ERK pathways. Here, we hope to provide new insights into the molecular mechanisms of pancreatic cancer, and may help facilitating development of EGFR-based therapies for human cancer.

摘要

表皮生长因子(EGF)通路在癌细胞上皮-间质转化(EMT)过程和转移中发挥关键作用。表皮生长因子受体(EGFR)作为EGF的重要受体之一,在EGF刺激下发生自身磷酸化,并激活MAPK/ERK、PI3K/Akt/mTOR等通路。在此,我们鉴定出EGFR是miR-338-5p的一个靶标。在EGF处理后,miR-338-5p的过表达不仅下调了EGFR的表达并抑制了MAPK/ERK信号传导,还抑制了胰腺癌细胞(PC)的EMT和转移过程。在临床病理分析中,miR-338-5p在44对PC组织中显著下调,其表达与淋巴结转移和美国癌症联合委员会(AJCC)分期呈负相关。此外,EGFR的过表达部分逆转了miR-338-5p过表达对EGF介导的PC细胞迁移和侵袭的保护作用。综上所述,miR-338-5p通过靶向EGFR/ERK通路控制PC细胞中EGF介导的EMT和转移。在此,我们希望为胰腺癌的分子机制提供新的见解,并可能有助于推动基于EGFR的人类癌症治疗方法的开发。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2590/8082406/0619ad6af437/fonc-11-616481-g001.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索