LncRNA EBLN3P Facilitates Osteosarcoma Metastasis by Enhancing Annexin A3 mRNA Stability and Recruiting HuR

作者全名："Wang, Shengtao; Zeng, Xinxin; Gui, Peng; Xu, Shujuan; Li, Zhaoxu; Chen, Dongxu"

作者地址："[Wang, Shengtao; Li, Zhaoxu; Chen, Dongxu] Nanxishan Hosp Guangxi Zhuang Autonomous Reg, Dept Joint Surg & Sports Med, Guilin, Guangxi, Peoples R China; [Zeng, Xinxin] Chongqing Med Univ, Banan Hosp, Dept Pain, Chongqing, Peoples R China; [Gui, Peng] Nanxishan Hosp Guangxi Zhuang Autonomous Reg, Dept Trauma Orthoped & Hand Surg, Guilin, Guangxi, Peoples R China; [Xu, Shujuan] Guilin Med Univ, Affiliated Hosp, Dept Hematopathol, Guilin, Guangxi, Peoples R China"

通信作者："Li, ZX; Chen, DX (通讯作者)，Nanxishan Hosp Guangxi Zhuang Autonomous Reg, Dept Joint Surg & Sports Med, Guilin, Guangxi, Peoples R China."

来源：ANNALS OF SURGICAL ONCOLOGY

ESI学科分类：CLINICAL MEDICINE

WOS号：WOS:001052360100003

JCR分区：Q1

影响因子：3.4

年份：2023

卷号：　

期号：　

开始页：　

结束页：　

文献类型：Article; Early Access

关键词：LncRNA EBLN3P; HuR; Annexin A3; Osteosarcoma; Proliferation; Migration; Invasion; Metastasis

摘要："BackgroundOsteosarcoma (OS) represents a common type of bone cancer. Long non-coding RNAs (LncRNAs) have shown their potential in therapeutic modalities for OS. This study's purpose was to reveal the action of lncRNA EBLN3P on OS growth and metastasis and its mechanism.MethodsExpressions of EBLN3P/Hu antigen R (HuR)/Annexin A3 (ANXA3) were determined by RT-qPCR/Western blot. Proliferation/migration/invasion of OS cells were assessed via CCK-8/Transwell assays after interfering EBLN3P/ANXA3/HuR. The co-localization of EBLN3P/ANXA3/HuR cells was observed by FISH/immunofluorescence assays. Interplays among EBLN3P/ANXA3/HuR and the half-life period of ANXA3 were assessed by RNA immunoprecipitation/RNA pull-down/RNA stability experiment. The nude mouse xenograft model was established, followed by EBLN3P treatment to assess the function of EBLN3P on OS.ResultsEBLN3P/ANXA3 was highly expressed in OS cells. Silencing EBLN3P or ANXA3 limited the proliferation/migration/invasion of OS cells. Mechanically, EBLN3P/ANXA3 can bind to HuR, and EBLN3P enhanced ANXA3 mRNA stability by recruiting HuR, thus facilitating OS cell growth. Upregulated HuR or ANXA3 counteracted the suppressive action of silencing EBLN3P on OS cells. In vivo experiments revealed facilitated tumor growth and metastasis in vivo fomented by EBLN3P through manipulation of HuR/ANXA3.ConclusionsEBLN3P enhanced proliferative/migrative/invasive potentials of OS cells via increasing ANXA3 mRNA stability and protein level by recruiting HuR, which provided new potential therapeutic targets for OS clinical treatment. EBLN3P and ANXA3 might have potential roles in OS diagnosis, treatment, and prognosis. This study provided a theoretical reference for further clinical research in tumor surgery."

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