Long noncoding RNA Linc00337 functions as an E2F1 co-activator and promotes cell proliferation in pancreatic ductal adenocarcinoma

Journal of Experimental & Clinical Cancer Research

Yingxia Wu¹  Yijun Shu¹  Huan Peng¹  Honggang Xiang¹  Huakai Wang¹  Shiyong Yu¹  Yijun Xu¹  Qi Zhu¹  Jiqi Yan²  Wenjie Zhang³ 

[1] Department of General Surgery Pudong New Area People’s Hospital Pudong New Area, No. 490, South Chuanhuan Road, 201200, Shanghai, China;Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, China;Department of General Surgery, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, No. 1655, Kongjiang Road, 200092, Shanghai, China;

关键词: PDAC;    Long noncoding RNA;    Linc00337;    E2F1;    Cell cycle;    Cell proliferation;   

DOI  :  10.1186/s13046-020-01725-5

来源: Springer

【 摘 要 】

BackgroundLong noncoding RNA (lncRNA) Linc00337 has been implicated in lung, gastric, colorectal and esophageal squamous cell carcinoma progression via various mechanisms; however, its clinicopathological significance and role in pancreatic ductal adenocarcinoma (PDAC) progression remains largely unknown.MethodsMultiple approaches such as bioinformatic analysis, Transfection, quantitative real-time-PCR, Western blotting, animal studies, RNA-immunoprecipitation (RIP), RNA-pulldown and RNA-Fluorescence in situ hybridization (RNA-FISH) and were utilized to explore the role of Linc00337 in PDAC.ResultsHere we identified Linc00337 is an oncogenic lncRNA during PDAC progression. We found that the expression of Linc00337 is elevated in PDAC tissues and the higher Linc00337 predicts dismal prognosis. Functionally, Linc00337 promotes PDAC cell proliferation and cell cycle transition both in vitro and in vivo. Mechanistically, Linc00337 binds to E2F1 and functions as an E2F1 coactivator to trigger the targets expression during PDAC progression.ConclusionOur results demonstrate a reciprocal regulation mechanism between Linc00337 and E2F1 in PDAC progression and report the clinical value of Linc00337 for PDAC prognosis and treatment.

【 授权许可】

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