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Breviscapine suppresses the growth of non-small cell lung cancer by enhancing microRNA-7 expression

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Abstract

Breviscapine (BVP) has previously been shown to inhibit the proliferation of hepatocellular carcinoma cells. However, little is known about the effects of BVP on non-small cell lung cancer (NSCLC) growth. Here, we aimed to study the effects of BVP on human NSCLC growth. We employed A549, NCL-H460 and A549 cells transfected with microRNA-7 (miR-7) mimic and inhibitor to investigate the effect of BVP on cell proliferation, apoptosis and apoptosis-associated molecules. The results showed that BVP significantly reduced the growth of A549 and NCL-H460 cells in a concentration-dependent and time-dependent manner, accompanied by a significant elevation of apoptosis. Additionally, the present study also confirmed that BVP-treated A549 cells showed increased levels of Bax and microRNA-7 (miR-7) and a decreased level of Bcl-2. The up-regulation of miR-7 enhanced the BVP sensitivity of NSCLC cells by suppressing cell proliferation and promoting cell apoptosis, while the inhibition of miR-7 reversed the anti-proliferative pro-apoptotic effects of BVP. Pre-treatment with miR-7 mimics enhanced the BVP-mediated down-regulation of Bax/Bcl-2 in NSCLC cells, while pre-treatment with the miR-7 inhibitor blocked the BVP-mediated down-regulation of Bax/Bcl. Taken together, these results confirm that BVP effectively inhibits NSCLC proliferation and that miR-7, as a novel target, is likely involved in BVP-induced growth suppression and the apoptosis of NSCLC cells.

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Acknowledgements

This work was financially supported by the project of medicine health science and technology plan of Zhejiang Province (No.2014KYB044)

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Authors and Affiliations

  1. Department of Thoracic Tumor Surgery, Zhejiang Cancer Hospital, Hangzhou, 310004, China

    Jian Zeng

  2. Department of Anesthesia, Zhejiang Cancer Hospital, Hangzhou, 310004, China

    Shunv Cai

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  1. Jian Zeng
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  2. Shunv Cai
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Correspondence to Shunv Cai.

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[Zeng J and Cai S 2017 Breviscapine suppresses the growth of non-small cell lung cancer by enhancing microRNA-7 expression. J. Biosci.]

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Zeng, J., Cai, S. Breviscapine suppresses the growth of non-small cell lung cancer by enhancing microRNA-7 expression. J Biosci 42, 121–129 (2017). https://doi.org/10.1007/s12038-017-9670-0

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