Theranostics 2020; 10(6):2714-2726. doi:10.7150/thno.40128

Research Paper

Soyasaponin II protects against acute liver failure through diminishing YB-1 phosphorylation and Nlrp3-inflammasome priming in mice

Fangzhao Wang1,2*, Shenhai Gong1,2*, Teng Wang1,2*, Lei Li1,2*, Haihua Luo1,2, Junhao Wang1,2, Chenyang Huang1,2, Hongwei Zhou5, Guiming Chen1,2, Zhanguo Liu3, Qifan Zhang4, Yong Jiang1,2✉, Peng Chen1,2,5✉

1. Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,
2. State Key Laboratory of Organ Failure Research; Southern Medical University, Guangzhou, China,
3. Department of Intensive Care Unit, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
4. Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China,
5. Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
* These authors contributed equally to this work

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Citation:
Wang F, Gong S, Wang T, Li L, Luo H, Wang J, Huang C, Zhou H, Chen G, Liu Z, Zhang Q, Jiang Y, Chen P. Soyasaponin II protects against acute liver failure through diminishing YB-1 phosphorylation and Nlrp3-inflammasome priming in mice. Theranostics 2020; 10(6):2714-2726. doi:10.7150/thno.40128. Available from http://www.thno.org/v10p2714.htm

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Abstract

Acute liver failure is characterized by the rapid development of liver dysfunction and remarkably high mortality. Accumulating evidence suggests that soyasaponin possesses potential anti-inflammatory activities. Here, we aimed to investigate the potential role of soyasaponin II in acute liver failure and establish the underlying mechanism.

Methods: Lipopolysaccharide/D-galactosamine (LPS/GalN) was employed to induce acute liver failure. We applied liquid chromatography and mass spectrometry (LC/MS) to characterize the changes of soyasaponin II levels in the cecal content and liver. Transcriptomics and proteomics analysis were used to evaluate the functional molecule mediated by soyasaponin II in macrophages.

Results: LPS/GalN administration markedly decreased fecal and hepatic soyasaponin II levels. Soyasaponin II treatment protected mice against LPS/GalN induced acute liver injury. Additionally, soyasaponin II markedly diminished Y-Box Binding Protein 1 (YB-1) phosphorylation and nuclear translocation, Nlrp3 inflammasome priming, and interleukin 1β (Il-1β) production in macrophages. Phosphorylated YB-1 could activate Nlrp3 mRNA transcription by binding the promoter region. Finally, immunofluorescence analysis showed elevated p-YB-1 nuclear translocation in macrophages of acute liver failure patients compared to controls.

Conclusion: Our data shows that soyasaponin II which serves as a novel inhibitor for YB-1 phosphorylation and Nlrp3 inflammasome priming could protect mice against LPS/GalN induced acute liver failure.

Keywords: acute liver failure, soyasaponin II, Nlrp3-inflammasome, YB-1