Oncotarget

Research Papers:

Melatonin attenuates hypoxia-induced epithelial-mesenchymal transition and cell aggressive via Smad7/ CCL20 in glioma

Xueran Chen _, Zhen Wang, Huihui Ma, Shangrong Zhang, Haoran Yang, Hongzhi Wang and Zhiyou Fang

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Oncotarget. 2017; 8:93580-93592. https://doi.org/10.18632/oncotarget.20525

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Abstract

Xueran Chen1,2, Zhen Wang1,2, Huihui Ma3,4, Shangrong Zhang1,2, Haoran Yang1,2, Hongzhi Wang1,2 and Zhiyou Fang1,2

1Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, China

2Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China

3Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China

4Department of Radiation Oncology, First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, 230022, China

Correspondence to:

Xueran Chen, email: xueranchen@cmpt.ac.cn

Zhiyou Fang, email: z.fang@cmpt.ac.cn

Keywords: melatonin, CCL20, epithelial–mesenchymal transition (EMT), glioma

Received: July 17, 2017    Accepted: August 01, 2017    Published: August 24, 2017

ABSTRACT

Tumor recurrence in gliomas is partly attributed to increased epithelial–mesenchymal transition (EMT) and enhanced tumor cell dissemination in the adjacent brain parenchyma. Thus, exploring effective strategies for against EMT-like changes in glioma invasion and recurrence will be important for glioma treatment. In this study, we investigated the roles of melatonin in hypoxia-induced EMT suppression, and found that melatonin could significantly suppress the release of the cytokine, CCL20, from cancer cells and antagonize glioma cell metastasis and invasion under hypoxic stress in glioma cells. Furthermore, our findings show that melatonin deregulates Smad7 expression to suppress TGFβ/Smad-mediated increase in CCL20 transcript levels and CCL20-induced EMT occurrence, suggesting a potential anti-EMT therapeutic role for melatonin in malignant transformation in gliomas.


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