CPEB4 Inhibit Cell Proliferation via Upregulating p21 mRNA Stability in Renal Cell Carcinoma.

CPEB4 Inhibit Cell Proliferation via Upregulating p21 mRNA Stability in Renal Cell Carcinoma.
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DOI:
10.3389/fcell.2021.687253
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发表时间:
2021
影响因子:
5.5
通讯作者:
Liu Y
Liu Y
中科院分区:
生物学2区
文献类型:
--
作者:
Di J;Wang H;Zhao Z;Zhao G;Qin X;Han Z;Liu Y

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细胞质聚腺苷化元件结合蛋白4 (CPEB4)已被报道在多种癌症中失调,并且似乎在不同的癌症中发挥矛盾的作用。然而,CPEB4在肾细胞癌(RCC)中的功能作用尚不清楚。本研究旨在探讨CPEB4在RCC中的作用及其机制。我们发现CPEB4的相对表达水平在RCC组织和细胞系中下调,CPEB4的低表达与RCC患者的总生存期和无病生存期较短相关。CPEB4在体内和体外均能显著抑制RCC肿瘤的生长。CPEB4通过增加RCC中p21 mRNA的稳定性和诱导G1细胞周期阻滞来发挥抗肿瘤作用。我们的数据显示,CPEB4是抑制RCC中p21上游细胞周期进展的肿瘤抑制基因。这些发现表明,CPEB4可能成为一种有希望预测RCC患者预后的生物标志物。
Cytoplasmic polyadenylation element-binding protein 4 (CPEB4) has been reported to be dysregulated in a variety of cancers and seems to play paradoxical roles in different cancers. However, the functional roles of CPEB4 in Renal cell carcinoma (RCC) are still unclear. This study aims to explore the role and underlying mechanism of CPEB4 in RCC. We found that the relative expression level of CPEB4 is down-regulated in RCC tissues and cell lines, and the low CPEB4 expression is correlated with short overall and disease-free survival of RCC patients. CPEB4 significantly inhibits RCC tumor growth both in vivo and in vitro. CPEB4 exerts an anti-tumor effect by increasing p21 mRNA stability and inducing G1 cell cycle arrest in RCC. Our data revealed that CPEB4 is a tumor suppressor gene that restrains cell cycle progression upstream of p21 in RCC. These findings revealed that CPEB4 may become a promising predictive biomarker for prognosis in patients with RCC.
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