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Article

Identification of Proteins Interacting with Cytoplasmic High-Mobility Group Box 1 during the Hepatocellular Response to Ischemia Reperfusion Injury

by
Tianjiao Zhang
1,
Weiwei Wei
1,
Olaf Dirsch
2,
Thomas Krüger
3,
Chunyi Kan
1,4,
Chichi Xie
1,
Olaf Kniemeyer
3,
Haoshu Fang
5,
Utz Settmacher
1 and
Uta Dahmen
1,*
1
Experimental Transplantation Surgery, Department of General, Visceral and Vascular Surgery, Jena University Hospital, 07747 Jena, Germany
2
Institute of Pathology, Klinikum Chemnitz gGmbH, 09116 Chemnitz, Germany
3
Department of Molecular and Applied Microbiology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany
4
Department of Obstetrics and Gynecology, Wuhan Central Hospital, Wuhan 430014, China
5
Department of Pathophysiology, Anhui Medical University, Hefei 230032, China
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2017, 18(1), 167; https://doi.org/10.3390/ijms18010167
Submission received: 9 September 2016 / Revised: 3 January 2017 / Accepted: 9 January 2017 / Published: 16 January 2017
(This article belongs to the Special Issue Molecular Mechanisms of Human Liver Diseases)
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Abstract

Ischemia/reperfusion injury (IRI) occurs inevitably in liver transplantations and frequently during major resections, and can lead to liver dysfunction as well as systemic disorders. High-mobility group box 1 (HMGB1) plays a pathogenic role in hepatic IRI. In the normal liver, HMGB1 is located in the nucleus of hepatocytes; after ischemia reperfusion, it translocates to the cytoplasm and it is further released to the extracellular space. Unlike the well-explored functions of nuclear and extracellular HMGB1, the role of cytoplasmic HMGB1 in hepatic IRI remains elusive. We hypothesized that cytoplasmic HMGB1 interacts with binding proteins involved in the hepatocellular response to IRI. In this study, binding proteins of cytoplasmic HMGB1 during hepatic IRI were identified. Liver tissues from rats with warm ischemia reperfusion (WI/R) injury and from normal rats were subjected to cytoplasmic protein extraction. Co-immunoprecipitation using these protein extracts was performed to enrich HMGB1-protein complexes. To separate and identify the immunoprecipitated proteins in eluates, 2-dimensional electrophoresis and subsequent mass spectrometry detection were performed. Two of the identified proteins were verified using Western blotting: betaine–homocysteine S-methyltransferase 1 (BHMT) and cystathionine γ-lyase (CTH). Therefore, our results revealed the binding of HMGB1 to BHMT and CTH in cytoplasm during hepatic WI/R. This finding may help to better understand the cellular response to IRI in the liver and to identify novel molecular targets for reducing ischemic injury.
Keywords: 2-dimensional electrophoresis (2DE); ischemic damage response; high-mobility group box 1 (HMGB1); ischemic injury; mass spectrometry (MS) 2-dimensional electrophoresis (2DE); ischemic damage response; high-mobility group box 1 (HMGB1); ischemic injury; mass spectrometry (MS)
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MDPI and ACS Style

Zhang, T.; Wei, W.; Dirsch, O.; Krüger, T.; Kan, C.; Xie, C.; Kniemeyer, O.; Fang, H.; Settmacher, U.; Dahmen, U. Identification of Proteins Interacting with Cytoplasmic High-Mobility Group Box 1 during the Hepatocellular Response to Ischemia Reperfusion Injury. Int. J. Mol. Sci. 2017, 18, 167. https://doi.org/10.3390/ijms18010167

AMA Style

Zhang T, Wei W, Dirsch O, Krüger T, Kan C, Xie C, Kniemeyer O, Fang H, Settmacher U, Dahmen U. Identification of Proteins Interacting with Cytoplasmic High-Mobility Group Box 1 during the Hepatocellular Response to Ischemia Reperfusion Injury. International Journal of Molecular Sciences. 2017; 18(1):167. https://doi.org/10.3390/ijms18010167

Chicago/Turabian Style

Zhang, Tianjiao, Weiwei Wei, Olaf Dirsch, Thomas Krüger, Chunyi Kan, Chichi Xie, Olaf Kniemeyer, Haoshu Fang, Utz Settmacher, and Uta Dahmen. 2017. "Identification of Proteins Interacting with Cytoplasmic High-Mobility Group Box 1 during the Hepatocellular Response to Ischemia Reperfusion Injury" International Journal of Molecular Sciences 18, no. 1: 167. https://doi.org/10.3390/ijms18010167

APA Style

Zhang, T., Wei, W., Dirsch, O., Krüger, T., Kan, C., Xie, C., Kniemeyer, O., Fang, H., Settmacher, U., & Dahmen, U. (2017). Identification of Proteins Interacting with Cytoplasmic High-Mobility Group Box 1 during the Hepatocellular Response to Ischemia Reperfusion Injury. International Journal of Molecular Sciences, 18(1), 167. https://doi.org/10.3390/ijms18010167

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