MicroRNA-125b-5p mimic inhibits acute liver failure

Dakai Yang, Qinggong Yuan, Asha Balakrishnan, Heike Bantel, Jan-Henning Klusmann, Michael P. Manns, Michael Ott, Tobias Cantz and Amar Deep Sharma ()
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Dakai Yang: Research Group MicroRNA in Liver Regeneration, Cluster of Excellence REBIRTH, Hannover Medical School
Qinggong Yuan: Hepatology and Endocrinology, Hannover Medical School
Asha Balakrishnan: Hepatology and Endocrinology, Hannover Medical School
Heike Bantel: Hepatology and Endocrinology, Hannover Medical School
Jan-Henning Klusmann: Pediatric Hematology and Oncology, Hannover Medical School
Michael P. Manns: Hepatology and Endocrinology, Hannover Medical School
Michael Ott: Hepatology and Endocrinology, Hannover Medical School
Tobias Cantz: Hepatology and Endocrinology, Hannover Medical School
Amar Deep Sharma: Research Group MicroRNA in Liver Regeneration, Cluster of Excellence REBIRTH, Hannover Medical School

Nature Communications, 2016, vol. 7, issue 1, 1-11

Abstract: Abstract The lack of broad-spectrum anti-acute liver failure (ALF) therapeutic agents contributes to ALF-related mortality. MicroRNAs (miRNAs) are suggested to be potent serum biomarkers for ALF, but their functional and therapeutic relevance in ALF are unclear. Here we show an unbiased approach, using two complementary miRNA screens, to identify miRNAs that can attenuate ALF. We identify miR-125b-5p as a regulator of cell death that attenuates paracetamol-induced and FAS-induced toxicity in mouse and human hepatocytes. Importantly, administration of miR-125b-5p mimic in mouse liver prevents injury and improves survival in models of ALF. Functional studies show that miR-125b-5p ameliorates ALF by directly regulating kelch-like ECH-associated protein 1, in turn elevating expression of nuclear factor-E2-related factor 2, a known regulator in ALF. Collectively, our findings establish miR-125b-5p as an important regulator of paracetamol-induced and FAS-induced cell death. Thus, miR-125b-5p mimic may serve as a broad-spectrum therapeutic attenuator of cell death during ALF.

Date: 2016
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DOI: 10.1038/ncomms11916

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