Molecular mechanisms of long noncoding RNAs on gastric cancer

Tianwen Li; Xiaoyan Mo; Liyun Fu; Bingxiu Xiao; Junming Guo

doi:10.18632/oncotarget.6926

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Molecular mechanisms of long noncoding RNAs on gastric cancer

Tianwen Li, Xiaoyan Mo, Liyun Fu, Bingxiu Xiao and Junming Guo _

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Oncotarget. 2016; 7:8601-8612. https://doi.org/10.18632/oncotarget.6926

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Abstract

Tianwen Li1, Xiaoyan Mo1, Liyun Fu1,2, Bingxiu Xiao1 and Junming Guo1

1 Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China

2 Department of Hepatology, Ningbo No.2 Hospital, Ningbo, China

Correspondence to:

Junming Guo, email:

Keywords: lncRNA, gastric cancer, miRNA, ceRNA, gene expression

Received: October 18, 2015 Accepted: January 13, 2016 Published: January 17, 2016

Abstract

Long noncoding RNAs (lncRNAs) are non-protein coding transcripts longer than 200 nucleotides. Aberrant expression of lncRNAs has been found associated with gastric cancer, one of the most malignant tumors. By complementary base pairing with mRNAs or forming complexes with RNA binding proteins (RBPs), some lncRNAs including GHET1, MALAT1, and TINCR may mediate mRNA stability and splicing. Other lncRNAs, such as BC032469, GAPLINC, and HOTAIR, participate in the competing endogenous RNA (ceRNA) network. Under certain circumstances, ANRIL, GACAT3, H19, MEG3, and TUSC7 exhibit their biological roles by associating with microRNAs (miRNAs). By recruiting histone-modifying complexes, ANRIL, FENDRR, H19, HOTAIR, MALAT1, and PVT1 may inhibit the transcription of target genes in cis or trans. Through these mechanisms, lncRNAs form RNA-dsDNA triplex. CCAT1, GAPLINC, GAS5, H19, MEG3, and TUSC7 play oncogenic or tumor suppressor roles by correlated with tumor suppressor P53 or onco-protein c-Myc, respectively. In conclusion, interaction with DNA, RNA and proteins is involved in lncRNAs’ participation in gastric tumorigenesis and development.

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Reviews:

Molecular mechanisms of long noncoding RNAs on gastric cancer

Abstract