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Circular RNA circDLC1 inhibits MMP1-mediated liver cancer progression via interaction with HuR
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Circular RNA circDLC1 inhibits MMP1-mediated liver cancer progression via interaction with HuR
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Journal Article
Circular RNA circDLC1 inhibits MMP1-mediated liver cancer progression via interaction with HuR
2021
Overview
circular RNAs (circRNAs) have been demonstrated to play a crucial role in cancer progression. KIAA1429, a key component of the m6A methyltransferase complex, has recently been reported to promote hepatocellular carcinoma (HCC) progression by regulating the m6A methylation. The aim of present study is to investigate the role of circular RNAs in KIAA1429-mediated HCC progression.
RNA sequencing (RNA-seq) and methylated RNA immunoprecipitation sequencing (m6A-seq) were utilized to identify KIAA1429-regulated circRNAs. The effects of circDLC1 on proliferation and metastasis of hepatoma cells were examined
and
. RT-qPCR was used to measure the expression of circDLC1 in HCC tissues and hepatoma cells. RNA FISH, RIP assays and biotin-labeled RNA pull-down were used to investigate the downstream effector of circDLC1. The downstream targets of circDLC1 were identified using RNA-seq.
Our data demonstrated that circDLC1 was downregulated in HCC tissues and closely relevant to favorable prognosis. Overexpression of circDLC1 inhibited the proliferation and motility of hepatoma cells
and
while silencing of circDLC1 played the opposite role. Mechanistic investigations revealed that circDLC1 could bind to RNA-binding protein HuR, which subsequently reduced the interaction between HuR and MMP1 mRNAs, and thus inhibited the expression of MMP1, ultimately contributing to inhibition of HCC progression.
Our work suggests that circDLC1, a downstream target of KIAA1429, is a promising prognostic marker for HCC patients, and the circDLC1-HuR-MMP1 axis may serve as a potential therapeutic target for HCC treatment.
Publisher
Ivyspring International Publisher Pty Ltd,Ivyspring International Publisher
Subject
/ Ascites
/ Carcinoma, Hepatocellular - genetics
/ Carcinoma, Hepatocellular - pathology
/ Cell Proliferation - genetics
/ ELAV-Like Protein 1 - genetics
/ Gene Expression Regulation, Neoplastic - genetics
/ GTPase-Activating Proteins - genetics
/ Humans
/ Male
/ Matrix Metalloproteinase 1 - genetics
/ Mice
/ Patients
/ Proteins
