miR-875-5p exerts tumor-promoting function via down-regulation of CAPZA1 in esophageal squamous cell carcinoma

PeerJ

article

Nan Kang¹  Yunwei Ou¹  Guangchao Wang¹  Jie Chen³  Dan Li¹  Qimin Zhan¹ 

[1] State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College;Department of Pathology, Peking University People’s Hospital;Key laboratory of Carcinogenesis and Translational Research ,(Ministry of Education/Beijing), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute

关键词: ESCC;    miR-875-5p;    SNP;    CAPZA1;    Down-regulate;   

DOI  :  10.7717/peerj.10020

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Esophageal squamous cell carcinoma (ESCC) is one of the leading causes of cancer deaths worldwide. Currently, efficient genetic markers for diagnosis and treatment of ESCC are lacking. MicroRNAs (miRNAs) are global genetic regulators that control cancer gene expression by binding to the 3′untranslated regions (3′UTRs) of targeting mRNAs. In addition, miRNAs function as oncogenes or tumor suppressors in the progression of tumors. In the current study, we found that hsa-miR-875-5p (miR-875-5p) exhibited amplification in ESCC according to the TCGA database. Then, xCELLigence Real-Time Cell Analyzer (RTCA)-MP system and colony formation assays were employed to detect cell proliferationand colony formationability. The results showed that miR-875-5p promoted the proliferation ESCC cells. Subsequently, transwell results indicated that miR-875-5p promoted the invasion and migration of ESCC cells. Furthermore, we showed that miR-875-5p was able to bind to CAPZA13’UTR, which contains the single nucleotide polymorphism (SNP), rs373245753, as reported in our previous study involving WGS and WES on ESCC. Subsequently, mRNA affinity pull-down assays verifiedthat the SNP disrupts miR-875-5p binding to CAPZA1. The current study is the first demonstration that miR-875-5p may function as an oncogene via down-regulation of CAPZA1 expression in ESCC.

【 授权许可】

CC BY