Title |
An ALOX12–12-HETE–GPR31 signaling axis is a key mediator of hepatic ischemia–reperfusion injury
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Published in |
Nature Medicine, December 2017
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DOI | 10.1038/nm.4451 |
Pubmed ID | |
Authors |
Xiao-Jing Zhang, Xu Cheng, Zhen-Zhen Yan, Jing Fang, Xiaozhan Wang, Weijun Wang, Zhen-Yu Liu, Li-Jun Shen, Peng Zhang, Pi-Xiao Wang, Rufang Liao, Yan-Xiao Ji, Jun-Yong Wang, Song Tian, Xue-Yong Zhu, Yan Zhang, Rui-Feng Tian, Lin Wang, Xin-Liang Ma, Zan Huang, Zhi-Gang She, Hongliang Li |
Abstract |
Hepatic ischemia-reperfusion (IR) injury is a common clinical issue lacking effective therapy and validated pharmacological targets. Here, using integrative 'omics' analysis, we identified an arachidonate 12-lipoxygenase (ALOX12)-12-hydroxyeicosatetraenoic acid (12-HETE)-G-protein-coupled receptor 31 (GPR31) signaling axis as a key determinant of the hepatic IR process. We found that ALOX12 was markedly upregulated in hepatocytes during ischemia to promote 12-HETE accumulation and that 12-HETE then directly binds to GPR31, triggering an inflammatory response that exacerbates liver damage. Notably, blocking 12-HETE production inhibits IR-induced liver dysfunction, inflammation and cell death in mice and pigs. Furthermore, we established a nonhuman primate hepatic IR model that closely recapitulates clinical liver dysfunction following liver resection. Most strikingly, blocking 12-HETE accumulation effectively attenuated all pathologies of hepatic IR in this model. Collectively, this study has revealed previously uncharacterized metabolic reprogramming involving an ALOX12-12-HETE-GPR31 axis that functionally determines hepatic IR procession. We have also provided proof of concept that blocking 12-HETE production is a promising strategy for preventing and treating IR-induced liver damage. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 4 | 21% |
United Kingdom | 2 | 11% |
Canada | 2 | 11% |
France | 1 | 5% |
Switzerland | 1 | 5% |
New Zealand | 1 | 5% |
Unknown | 8 | 42% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 11 | 58% |
Scientists | 5 | 26% |
Science communicators (journalists, bloggers, editors) | 2 | 11% |
Practitioners (doctors, other healthcare professionals) | 1 | 5% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 138 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 21 | 15% |
Researcher | 20 | 14% |
Student > Master | 15 | 11% |
Student > Bachelor | 12 | 9% |
Other | 8 | 6% |
Other | 23 | 17% |
Unknown | 39 | 28% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 20 | 14% |
Biochemistry, Genetics and Molecular Biology | 17 | 12% |
Agricultural and Biological Sciences | 12 | 9% |
Immunology and Microbiology | 11 | 8% |
Pharmacology, Toxicology and Pharmaceutical Science | 11 | 8% |
Other | 19 | 14% |
Unknown | 48 | 35% |