Targeting the FOXM1-regulated long noncoding RNA TUG1 in osteosarcoma.

Targeting the FOXM1-regulated long noncoding RNA TUG1 in osteosarcoma.
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DOI:
10.1111/cas.13765
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发表时间:
2018-10
期刊:
影响因子:
5.7
通讯作者:
Wang W
Wang W
中科院分区:
医学2区
文献类型:
--
作者:
Li Y;Zhang T;Zhang Y;Zhao X;Wang W

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长链非编码RNA(lncRNA)在骨肉瘤的增殖和转移中起重要作用。因此,迫切需要明确骨肉瘤的发病机制,寻找新的治疗方法。在这项研究中,我们评估了TUG 1(牛磺酸上调基因1)在骨肉瘤组织中的表达,并选择其作为我们进一步分析的目标。在体外,我们发现TUG 1在骨肉瘤细胞中被FOXM 1(Forkhead Box M1)上调。TUG 1通过竞争性地吸收miR-219 a-5 p加速骨肉瘤的增殖、迁移和侵袭,导致磷脂酰肌醇-4,5-二磷酸3-激酶催化亚基α的上调和蛋白激酶B(AKT)信号通路的激活。此外,AKT通路的激活通过上调FOXM 1的表达促进TUG 1的表达,在骨肉瘤中形成正反馈环。此外,我们设计并合成了靶向TUG 1的治疗性锁核酸。骨肉瘤的增殖受到明显抑制。因此,TUG 1可能是骨肉瘤的潜在生物标志物和治疗靶点。
Long noncoding RNAs (lncRNAs) play an important role in the proliferation and metastasis of osteosarcoma. Identification of the pathogenesis of osteosarcoma and development of new therapeutic strategies against osteosarcoma are urgently needed. In this study, we evaluated the expression of TUG1 (Taurine Upregulated Gene 1) in osteosarcoma tissues and selected it as our target for further analyses. In vitro, we found that TUG1 was upregulated by FOXM1 (Forkhead Box M1) in osteosarcoma cells. TUG1 accelerated osteosarcoma proliferation, migration, and invasion by competitively sponging miR‐219a‐5p, leading to upregulation of Phosphatidylinositol‐4, 5‐Bisphosphate 3‐Kinase Catalytic Subunit Alpha and activation of the protein kinase B (AKT) signaling pathway. In addition, the AKT pathway activation promoted TUG1 expression by upregulating the expression of FOXM1, forming a positive feedback loop in osteosarcoma. Furthermore, we designed and synthesized therapeutic locked nucleic acids targeting TUG1. The proliferation of osteosarcoma was significantly repressed. Hence, TUG1 may be a potential biomarker and therapeutic target for osteosarcoma.
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