miR-1254 induced by NESG1 inactivates HDGF/DDX5-stimulated nuclear translocation of β-catenin and suppresses NPC metastasis

Chao Cheng; Wenmin Li; Xuemei Peng; Xiong Liu; Ziyan Zhang; Zhen Liu; Tongyuan Deng; Rongcheng Luo; Weiyi Fang; Xiaojie Deng

doi:10.1016/j.omtm.2021.02.001

miR-1254 induced by NESG1 inactivates HDGF/DDX5-stimulated nuclear translocation of β-catenin and suppresses NPC metastasis

Mol Ther Methods Clin Dev. 2021 Feb 4:20:615-624. doi: 10.1016/j.omtm.2021.02.001. eCollection 2021 Mar 12.

Authors

Chao Cheng¹, Wenmin Li², Xuemei Peng², Xiong Liu³, Ziyan Zhang², Zhen Liu⁴, Tongyuan Deng², Rongcheng Luo², Weiyi Fang², Xiaojie Deng²

Affiliations

¹ Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China.
² Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.
³ E.N.T. Department of Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
⁴ Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.

Abstract

Nasopharyngeal carcinoma (NPC) is one of the most common malignant tumors in Chinese and other Southeast Asians. We aimed to explore the precise mechanism for NESG1 in NPC for understanding the pathogenesis of NPC. Transwell, Boyden assays, and wounding healing were respectively performed for cell metastasis. The microRNA (miRNA) microarray and luciferase reporter assays were designed to clarify NESG1-modulated miRNAs and miR-1254-targeted protein. Western blotting assays examined the pathways regulated by miR-1254, the (Hepatoma-Derived Growth Factor) HDGF/DDX5 complex, and NESG1. The chromatin immunoprecipitation (ChIP), electrophoretic mobility shift assay (EMSA), and co-immunoprecipitation (coIP) assays were used to explore the DNA-protein complex and protein-protein complex. NESG1 suppressed NPC migration and invasion via Wnt/β-catenin signaling. Further, miR-1254 was confirmed as a positive downstream modulator of NESG1 reducing metastatic abilities of NPC cells in vivo and in vitro. Transduction of HDGF significantly restored cell migration and invasion ability in miR-1254-overexpressing NPC cells. In clinical samples, miR-1254 expression was negatively correlated with HDGF and positively correlated with NESG1 expression. miR-1254 acts as an independent prognostic factor for NPC, which was induced by NESG1 to suppress NPC metastasis via inactivating Wnt/β-catenin pathway and its downstream EMT signals.

Keywords: EMT signals; NESG1; miR-1254; nasopharyngeal carcinoma; β-catenin.