关贸总协定6
竞争性内源性RNA
基因敲除
长非编码RNA
生物
癌症研究
反义RNA
细胞生长
细胞凋亡
分子生物学
核糖核酸
基因表达
基因
遗传学
作者
Xiaodong Huo,Huixing Wang,Ning Jiang,Kuo Yang,Bin Huo,Lili Wang,Jinhuan Wang,Haitao Wang
出处
期刊:Research Square - Research Square
日期:2020-07-06
被引量:1
标识
DOI:10.21203/rs.3.rs-39964/v1
摘要
Abstract Background: Accumulating evidence has indicated the remarkable roles of long non-coding RNAs (lncRNAs) as oncogenes or tumor suppressors in many malignancies. The involvement of lncRNA GATA6-AS1 in cancers remains largely undiscovered. Herein, our research was aimed at elucidating the function and mechanism of GATA6-AS1 in lung adenocarcinoma (LUAD). Methods: Gene expression was measured through qRT-PCR and WB. Cell proliferation ratio was determined using CCK-8 and EdU assays. Cell apoptosis ratio was determined using TUNEL and flow cytometry assays. Molecular interactions were examined through RIP, RNA pull-down and luciferase reporter assays. Results: GATA6-AS1 expression was markedly down-regulated in LUAD cell lines. GATA6-AS1 could inhibit LUAD cell proliferation and promote cell apoptosis. Mechanistically, GATA6-AS1 was identified as the molecular sponge for miR-331-3p, whose knockdown in LUAD cells could reinforce the tumor-suppressing effects of GATA6-AS1 overexpression. Moreover, GATA6-AS1 functions as a competing endogenous RNA (ceRNA) through sequestering miR-331-3p to deregulate SOCS1, thus inhibiting JAK2/STAT3 signaling pathway and suppressing LUAD cell viability. Conclusions: These results demonstrate the tumor-suppressing function and mechanism of lncRNA GATA6-AS1 in LUAD cells. The axis of GATA6-AS1/miR-331-3p/SOCS1/JAK2/STAT3 can be adopted as a novel approach for LUAD treatment.
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