MicroRNA-493 suppresses tumor growth, invasion and metastasis of lung cancer by regulating E2F1.

MicroRNA-493 suppresses tumor growth, invasion and metastasis of lung cancer by regulating E2F1.
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DOI:
10.1371/journal.pone.0102602
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
He Z
He Z
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Gu Y;Cheng Y;Song Y;Zhang Z;Deng M;Wang C;Zheng G;He Z

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微小RNA(miRNAs)被认为是癌症进展和转移的关键调节因子。然而,需要了解它们的作用和分子机制,以便为更好的治疗机会提供更深入的见解。在这项研究中,我们研究了miR - 493在非小细胞肺癌(NSCLC)发生和进展中的作用及机制。我们的数据表明,miR - 493在肺癌中的表达显著降低。miR - 493的异位表达在体外和体内抑制细胞生长和侵袭。从机制上讲,miR - 493通常直接靶向E2F1,这导致mRNA和蛋白质的表达大幅降低。这种作用反过来又降低了肺癌细胞的生长、侵袭和转移。我们的研究结果强调了miR - 493功能失调在促进肿瘤进展中的重要性,并暗示miR - 493可作为肺癌的一个潜在治疗靶点。
miRNAs have been proposed to be key regulators of progression and metastasis in cancer. However, an understanding of their roles and molecular mechanisms is needed to provide deeper insights for better therapeutic opportunities. In this study we investigated the role and mechanism of miR-493 in the development and progression of nonsmall-cell lung cancer (NSCLC). Our data indicated that the expression of miR-493 was markedly reduced in pulmonary carcinoma. The ectopic expression of miR-493 impaired cell growth and invasion in vitro and in vivo. Mechanically, miR-493 commonly directly targeted E2F1, which resulted in a robust reduction of the expression of mRNA and protein. This effect, in turn, decreased the growth, invasion and metastasis of lung cancer cells. Our findings highlight the importance of miR-493 dysfunction in promoting tumor progression, and implicate miR-493 as a potential therapeutic target in lung cancer.
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