The LINC00519/hsa-miR-22-3p/MECOM Axis Accelerates Intrahepatic Cholangiocarcinoma Progression Through PI3K/AKT Signaling.

IF 4.7 2区 医学 Q2 CELL BIOLOGY
Zhuxin Gu, Yanjun Sun, Fajing Chen, Weiwei Gu, Xiaohua Lu, Suming Zhao, Qinan Geng, Yang Yang
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引用次数: 0

Abstract

Intrahepatic cholangiocarcinoma (ICC) is the second most common liver cancer. LINC00519 plays prominent roles in the progression of numerous cancers. To explore the molecular mechanism of LINC00519 in ICC, LINC00519, hsa-miR-22-3p, and MECOM expressions in ICC were assessed with ENCORI database and quantitative real-time PCR. Biological functions of LINC00519 in ICC were examined using clone formation experiment, Transwell analysis, flow cytometry, and Western blot. Meanwhile, the LINC00519 mechanism in ICC was determined by dual-luciferase reporter assay. Results showed that LINC00519 and MECOM were highly expressed in ICC, but hsa-miR-22-3p was decreased. Functionally, silencing LINC00519 weakened ICC cell proliferation, migration and induced cell apoptosis. Also, LINC00519 knockdown repressed PI3K/AKT pathway. Mechanistically, LINC00519 acted as a competitive endogenous RNA to target MECOM by sponging hsa-miR-22-3p. Meanwhile, rescue assays further proved that low LINC00519 expression restrained ICC cell proliferation and migration, and accelerated apoptosis through PI3K/AKT pathway by miR-22-3p/MECOM. In conclusion, this research revealed a novel LINC00519/hsa-miR-22-3p/MECOM regulatory axis and PI3K/AKT pathway that modulated ICC progression. Implications: This study deepens the understanding of the non-coding RNA regulatory network in ICC and provides potential targets for the diagnosis and targeted therapy of ICC.

LINC00519/hsa-miR-22-3p/MECOM轴通过PI3K/AKT信号通路加速肝内胆管癌进展
肝内胆管癌(ICC)是第二常见的肝癌。LINC00519在许多癌症的进展中起着重要作用。为探讨LINC00519在ICC中的分子机制,采用ENCORI数据库和实时荧光定量PCR检测LINC00519、hsa-miR-22-3p和MECOM在ICC中的表达。采用克隆形成实验、Transwell分析、流式细胞术和Western blot检测LINC00519在ICC中的生物学功能。同时,采用双荧光素酶报告基因法确定了LINC00519在ICC中的作用机制。结果显示,LINC00519和MECOM在ICC中高表达,而hsa-miR-22-3p表达降低。在功能上,沉默LINC00519可减弱ICC细胞的增殖、迁移和诱导细胞凋亡。此外,LINC00519敲低抑制PI3K/AKT通路。机制上,LINC00519作为竞争性内源性RNA,通过海绵吸附hsa-miR-22-3p靶向MECOM。同时,救援实验进一步证明,LINC00519低表达抑制ICC细胞增殖和迁移,并通过miR-22-3p/MECOM通过PI3K/AKT通路加速凋亡。总之,本研究揭示了一种新的LINC00519/hsa-miR-22-3p/MECOM调控轴和PI3K/AKT通路调节ICC进展。意义:本研究加深了对ICC非编码RNA调控网络的认识,为ICC的诊断和靶向治疗提供了潜在靶点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Molecular Cancer Research
Molecular Cancer Research 医学-细胞生物学
CiteScore
9.90
自引率
0.00%
发文量
280
审稿时长
4-8 weeks
期刊介绍: Molecular Cancer Research publishes articles describing novel basic cancer research discoveries of broad interest to the field. Studies must be of demonstrated significance, and the journal prioritizes analyses performed at the molecular and cellular level that reveal novel mechanistic insight into pathways and processes linked to cancer risk, development, and/or progression. Areas of emphasis include all cancer-associated pathways (including cell-cycle regulation; cell death; chromatin regulation; DNA damage and repair; gene and RNA regulation; genomics; oncogenes and tumor suppressors; signal transduction; and tumor microenvironment), in addition to studies describing new molecular mechanisms and interactions that support cancer phenotypes. For full consideration, primary research submissions must provide significant novel insight into existing pathway functions or address new hypotheses associated with cancer-relevant biologic questions.
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