Author
Listed:
- Xiaodong Ma
(Lerner Research Institute, Cleveland Clinic
Institute of Pharmaceutical Research, South China Normal University)
- Daniel J. Conklin
(Diabetes and Obesity Center, University of Louisville)
- Fenge Li
(Diabetes and Obesity Center, University of Louisville)
- Zhongping Dai
(Fox Chase Cancer Center, Institute for Cancer Research)
- Xiang Hua
(Fox Chase Cancer Center, Institute for Cancer Research)
- Yan Li
(School of Medicine, University of Louisville)
- Zijun Y. Xu-Monette
(MD Anderson Cancer Center)
- Ken H. Young
(MD Anderson Cancer Center)
- Wei Xiong
(Cancer Research Institute, Central South University)
- Marcin Wysoczynski
(Diabetes and Obesity Center, University of Louisville)
- Srinivas D. Sithu
(Diabetes and Obesity Center, University of Louisville)
- Sanjay Srivastava
(Diabetes and Obesity Center, University of Louisville)
- Aruni Bhatnagar
(Diabetes and Obesity Center, University of Louisville)
- Yong Li
(Lerner Research Institute, Cleveland Clinic)
Abstract
MicroRNAs (miRNAs) regulate apoptosis, yet their role in regulated necrosis remains unknown. miR-21 is overexpressed in nearly all human cancer types and its role as an oncogene is suggested to largely depend on its anti-apoptotic action. Here we show that miR-21 is overexpressed in a murine model of acute pancreatitis, a pathologic condition involving RIP3-dependent regulated necrosis (necroptosis). Therefore, we investigate the role of miR-21 in acute pancreatitis injury and necroptosis. miR-21 deficiency protects against caerulein- or L-arginine-induced acute pancreatitis in mice. miR-21 inhibition using locked-nucleic-acid-modified oligonucleotide effectively reduces pancreatitis severity. miR-21 deletion is also protective in tumour necrosis factor-induced systemic inflammatory response syndrome. These data suggest that miRNAs are critical participants in necroptosis and miR-21 enhances cellular necrosis by negatively regulating tumour suppressor genes associated with the death-receptor-mediated intrinsic apoptosis pathway, and could be a therapeutic target for preventing pathologic necrosis.
Suggested Citation
Xiaodong Ma & Daniel J. Conklin & Fenge Li & Zhongping Dai & Xiang Hua & Yan Li & Zijun Y. Xu-Monette & Ken H. Young & Wei Xiong & Marcin Wysoczynski & Srinivas D. Sithu & Sanjay Srivastava & Aruni Bh, 2015.
"The oncogenic microRNA miR-21 promotes regulated necrosis in mice,"
Nature Communications, Nature, vol. 6(1), pages 1-13, November.
Handle:
RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8151
DOI: 10.1038/ncomms8151
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