Inhibition of LCMR1 and ATG12 by Demethylation-activated MiR-570-3p is Involved in the Anti-metastasis Effects of Metformin on Human Osteosarcoma

Overview

Journal Cell Death Dis

Specialties Cell Biology
General Medicine

Date 2018 May 26

PMID 29795113

Citations 16

Authors

Xing Bao

Libo Zhao

Hanfeng Guan

Feng Li

Affiliations

Soon will be listed here.

Abstract

Epidemiological studies have demonstrated that metformin could mitigate the progression of several tumors. Although it has been proved that metformin could cause demethylation of DNA and lead to up-regulation of some encoding genes and non-coding RNAs, there is little data about the effects of metformin on metastasis, and the interaction between metastasis and autophagy in human osteosarcoma cells. Here, we found miR-570-3p was significantly down-regulated in human metastatic osteosarcoma tissues but not in non-metastatic osteosarcoma tissues. Metformin attenuates the metastasis and autophagy in osteosarcoma. Interestingly, this autophagy favors osteosarcoma cells invasion. Moreover, reduction of metformin-induced inhibition of autophagy could reverse the invasion suppression in osteosarcoma. Mechanistically, metformin increases miR-570-3p by the demethylation of DNA, and the upregulation of miR-570-3p repressed the translation of its target, LCMR1 and ATG12. Our results, for the first time, presents evidence that the miR-570-3p-mediated suppression of LCMR1 and ATG12 is involved in the metformin-induced inhibition of metastasis in osteosarcoma cells.

Citing Articles

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