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Kirschbaum M, Jenne CN, Veldhuis ZJ, Sjollema KA, Lenting PJ, Giepmans BNG, Porte RJ, Kubes P, Denis CV, Lisman T. Transient von Willebrand factor-mediated platelet influx stimulates liver regeneration after partial hepatectomy in mice. Liver Int 2017; 37:1731-1737. [PMID: 28178387 DOI: 10.1111/liv.13386] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 02/02/2017] [Indexed: 02/13/2023]
Abstract
BACKGROUND & AIMS In addition to their function in thrombosis and haemostasis, platelets play an important role in the stimulation of liver regeneration. It has been suggested that platelets deliver mitogenic cargo to the regenerating liver, and accumulation of platelets in the regenerating liver has been demonstrated. We studied kinetics of platelet influx in the regenerating liver and investigated the signal that initiates platelet influx. METHODS We visualized platelets in the liver remnant after partial hepatectomy in mice using intravital microscopy and assessed liver regeneration by examination of liver/body weight ratio and the number of proliferating hepatocytes examined by immunohistochemistry. RESULTS We demonstrated rapid but transient platelet influx into the liver remnant after a partial liver resection. Liver regeneration in thrombocytopenic mice was substantially impaired as evidenced by a reduced liver-to-body weight ratio and decreased numbers of proliferating hepatocytes at day 3 compared to mice with normal platelet counts. In contrast, liver regeneration was only mildly impaired when thrombocytopaenia was induced 2 hours after partial liver resection. Platelet influx into the liver remnant was virtually absent in the presence of an antibody to von Willebrand factor (VWF) suggesting that VWF release from liver sinusoidal endothelial cells mediates platelet influx. Additionally, liver regeneration in mice deficient in VWF was markedly impaired. CONCLUSIONS A rapid but transient VWF-dependent platelet influx into the liver remnant drives platelet-mediated liver regeneration.
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Affiliation(s)
- Marc Kirschbaum
- Surgical Research Laboratory Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Craig N Jenne
- Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - Zwanida J Veldhuis
- Surgical Research Laboratory Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Klaas A Sjollema
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Peter J Lenting
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Ben N G Giepmans
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Robert J Porte
- Section of Hepatobiliairy Surgery and Liver Transplantation, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Paul Kubes
- Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - Cécile V Denis
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1176, Univ. Paris-Sud, Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
| | - Ton Lisman
- Surgical Research Laboratory Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Section of Hepatobiliairy Surgery and Liver Transplantation, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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