Down-regulated lncRNA SLC25A5-AS1 facilitates cell growth and inhibits apoptosis via miR-19a-3p/PTEN/PI3K/AKT signalling pathway in gastric cancer

Journal of Cellular and Molecular Medicine
Xiwen LiShaoqing Ju

Abstract

Mounting evidence has illustrated the vital roles of long non-coding RNAs (lncRNAs in gastric cancer (GC). Nevertheless, the majority of their roles and mechanisms in GC are still largely unknown. In this study, we investigate the roles of lncRNA SLC25A5-AS1 on tumourigenesis and explore its potential mechanisms in GC. The results showed that the expressions of SLC25A5-AS1 in GC were significantly lower than that of adjacent normal tissues, which were significantly associated with tumour size, TNM stage and lymph node metastasis. Moreover, SLC25A5-AS1 could inhibit GC cell proliferation, induce G1/G1 cell cycle arrest and cell apoptosis in vitro, as well as GC growth in vivo. Dual-luciferase reporter assay confirmed the direct interaction between SLC25A5-AS1 and miR-19a-3p, rescue experiment showed that co-transfection miR-19a-3p mimics and pcDNA-SLC25A5-AS1 could partially restore the ability of GC cell proliferation and the inhibition of cell apoptosis. The mechanism analyses further found that SLC25A5-AS1 might act as a competing endogenous RNAs (ceRNA), which was involved in the derepression of PTEN expression, a target gene of miR-19a-3p, and regulate malignant phenotype via PI3K/AKT signalling pathway in GC. Taken togethe...Continue Reading

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Citations

Nov 14, 2019·Journal of Cellular and Molecular Medicine·Weiming WuHuibiao Zhang
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May 6, 2020·World Journal of Gastrointestinal Oncology·Chong-Bing SunXiao-Gang Leng
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Jul 20, 2021·Technology in Cancer Research & Treatment·Wenwen TangLinjiang Song

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Methods Mentioned

BETA
surgical resection
transfection
Assay
flow cytometry
Flow

Software Mentioned

GeneSpring
miRanda
Targetscan

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