| Literature DB >> 33665159 |
Linhao Tong1, Weixu Zhang1, Bicheng Qu1, Fei Zhang1, Zhonghua Wu1, Jinxin Shi1, Xiaowan Chen1, Yongxi Song1, Zhenning Wang1.
Abstract
tRNA-derived fragments (tRFs) are a new classification of small non-coding RNAs (sncRNAs) derived from the specific cleavage of precursors and mature tRNAs. Accumulating recent evidence has shown that tRFs are frequently abnormal in several cancers. Nevertheless, the role of tRFs in gastric cancer and its mechanism remain unclear. In this study, we found abnormal expression of tRF-3017A (derived from tRNA-Val-TAC) in gastric cancer tissues and cell lines and confirmed its effect on promoting the invasion and migration of gastric cancer cells through functional experiments in vitro. Analysis of clinicopathologic data showed patients with higher tRF-3017A were associated with significantly higher lymph node metastasis. Mechanistic investigation implies that tRF-3017A regulates the tumor suppressor gene NELL2 through forming the RNA-induced silencing complex (RISC) with Argonaute (AGO) proteins. In this study, we found that higher tRF-3017A were associated with significantly higher lymph node metastasis in gastric cancer patients and the tRF-3017A may play a role in promoting the migration and invasion of gastric cancer cells by silencing tumor suppressor NELL2.Entities:
Keywords: NELL2; gastric cancer; lymph node metastasis; molecular mechanism; tRNA-derived fragment
Year: 2021 PMID: 33665159 PMCID: PMC7921707 DOI: 10.3389/fonc.2020.570916
Source DB: PubMed Journal: Front Oncol ISSN: 2234-943X Impact factor: 6.244