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PLoS One. 2019 Jun 18;14(6):e0217633. doi: 10.1371/journal.pone.0217633. eCollection 2019.

The heparin-binding proteome in normal pancreas and murine experimental acute pancreatitis.

Author information

1
Liverpool Pancreatitis Research Group, Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom.
2
Department of Biochemistry, Institute of Integrative Biology, Biosciences Building, University of Liverpool, Liverpool, United Kingdom.
3
Centre for Proteome Research, Institute of Integrative Biology, Biosciences Building, University of Liverpool, Liverpool, United Kingdom.
4
Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Xinxiang, Henan, China.
5
College of Life and Environmental Science, Wen Zhou University, Wenzhou, China.
6
Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital, Sichuan University, Chengdu, China.

Abstract

Acute pancreatitis (AP) is acute inflammation of the pancreas, mainly caused by gallstones and alcohol, driven by changes in communication between cells. Heparin-binding proteins (HBPs) play a central role in health and diseases. Therefore, we used heparin affinity proteomics to identify extracellular HBPs in pancreas and plasma of normal mice and in a caerulein mouse model of AP. Many new extracellular HBPs (360) were discovered in the pancreas, taking the total number of HBPs known to 786. Extracellular pancreas HBPs form highly interconnected protein-protein interaction networks in both normal pancreas (NP) and AP. Thus, HBPs represent an important set of extracellular proteins with significant regulatory potential in the pancreas. HBPs in NP are associated with biological functions such as molecular transport and cellular movement that underlie pancreatic homeostasis. However, in AP HBPs are associated with additional inflammatory processes such as acute phase response signalling, complement activation and mitochondrial dysfunction, which has a central role in the development of AP. Plasma HBPs in AP included known AP biomarkers such as serum amyloid A, as well as emerging targets such as histone H2A. Other HBPs such as alpha 2-HS glycoprotein (AHSG) and histidine-rich glycoprotein (HRG) need further investigation for potential applications in the management of AP. Pancreas HBPs are extracellular and so easily accessible and are potential drug targets in AP, whereas plasma HBPs represent potential biomarkers for AP. Thus, their identification paves the way to determine which HBPs may have potential applications in the management of AP.

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