Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Πέμπτη 4 Φεβρουαρίου 2016

MicroRNA-761 is upregulated in hepatocellular carcinoma and regulates tumorigenesis by targeting Mitofusin-2

Abstract

Hepatocellular carcinoma (HCC) is the sixth most prevalent cancer and the third leading cause of cancer-related deaths worldwide. The fate of a cell is determined by the balance between the processes of fission and fusion that constantly occur in the mitochondria of cells. We previously showed that overexpression of Mitofusin-2 can induce apoptosis in HCC cells by triggering an influx of Ca2+ into the mitochondria from the ER. The function of Mitofusin-2 has been studied extensively, but the mechanism underlying the post-transcriptional regulation of Mitofusin-2 has not been elucidated. In this study, we aimed to identify the mechanism of Mitofusin-2 regulation in HCC. We demonstrated that Mitofusin-2 is a direct target of miR-761, which was found to be upregulated in HCC tissues. Further, a miR-761 inhibitor impairs mitochondrial function by upregulating Mitofusin-2 and effectively repressed tumor growth and metastasis both in vivo and vitro. Our findings provide new insights into the mechanism underlying Mitofusin-2 regulation and the potential role of miR-761 in HCC, making it a potential candidate for use in HCC therapy in the future.

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