1
|
Heun Y, Pircher J, Czermak T, Bluem P, Hupel G, Bohmer M, Kraemer BF, Pogoda K, Pfeifer A, Woernle M, Ribeiro A, Hübner M, Kreth S, Claus RA, Weis S, Ungelenk L, Krötz F, Pohl U, Mannell H. Inactivation of the tyrosine phosphatase SHP-2 drives vascular dysfunction in Sepsis. EBioMedicine 2019; 42:120-132. [PMID: 30905847 PMCID: PMC6491420 DOI: 10.1016/j.ebiom.2019.03.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/12/2019] [Accepted: 03/12/2019] [Indexed: 12/20/2022] Open
Abstract
Background Sepsis, the most severe form of infection, involves endothelial dysfunction which contributes to organ failure. To improve therapeutic prospects, elucidation of molecular mechanisms underlying endothelial vascular failure is of essence. Methods Polymicrobial contamination induced sepsis mouse model and primary endothelial cells incubated with sepsis serum were used to study SHP-2 in sepsis-induced endothelial inflammation. SHP-2 activity was assessed by dephosphorylation of pNPP, ROS production was measured by DCF oxidation and protein interactions were assessed by proximity ligation assay. Vascular inflammation was studied in the mouse cremaster model and in an in vitro flow assay. Findings We identified ROS-dependent inactivation of the tyrosine phosphatase SHP-2 to be decisive for endothelial activation in sepsis. Using in vivo and in vitro sepsis models, we observed a significant reduction of endothelial SHP-2 activity, accompanied by enhanced adhesion molecule expression. The impaired SHP-2 activity was restored by ROS inhibitors and an IL-1 receptor antagonist. SHP-2 activity inversely correlated with the adhesive phenotype of endothelial cells exposed to IL-1β as well as sepsis serum via p38 MAPK and NF-κB. In vivo, SHP-2 inhibition accelerated IL-1β-induced leukocyte adhesion, extravasation and vascular permeability. Mechanistically, SHP-2 directly interacts with the IL-1R1 adaptor protein MyD88 via its tyrosine 257, resulting in reduced binding of p85/PI3-K to MyD88. Interpretation Our data show that SHP-2 inactivation by ROS in sepsis releases a protective break, resulting in endothelial activation. Fund German Research Foundation, LMU Mentoring excellence and FöFoLe Programme, Verein zur Förderung von Wissenschaft und Forschung, German Ministry of Education and Research.
Collapse
Affiliation(s)
- Yvonn Heun
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Joachim Pircher
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistrasse 15, Munich 81377, Germany; DZHK (German Center for Cardiovascular Research) partner site Munich Heart Alliance, Munich, Germany
| | - Thomas Czermak
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistrasse 15, Munich 81377, Germany
| | - Philipp Bluem
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Georg Hupel
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Monica Bohmer
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Bjoern F Kraemer
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistrasse 15, Munich 81377, Germany
| | - Kristin Pogoda
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, Biomedical Center University of Bonn, Sigmund-Freud-Straße 25, Bonn 53105, Germany
| | - Markus Woernle
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ziemssenstr.1, Munich 80336, Germany
| | - Andrea Ribeiro
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ziemssenstr.1, Munich 80336, Germany
| | - Max Hübner
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Department of Anesthesiology, Klinikum der Universität München, Marchioninistraße 15, München 81377, Germany
| | - Simone Kreth
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Department of Anesthesiology, Klinikum der Universität München, Marchioninistraße 15, München 81377, Germany
| | - Ralf A Claus
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany
| | - Sebastian Weis
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany; Institute for Infectious Disease and Infection Control, Jena University Hospital, Jena 07747, Germany; Center for Sepsis Control and Care, Jena University Hospital, Jena 07747, Germany
| | - Luisa Ungelenk
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany
| | - Florian Krötz
- Interventional Cardiology, Starnberg Community Hospital, Oßwaldstr. 1, Starnberg 82319, Germany
| | - Ulrich Pohl
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany; DZHK (German Center for Cardiovascular Research) partner site Munich Heart Alliance, Munich, Germany; Munich Cluster for Systems Neurology, (SyNergy), Munich, Germany
| | - Hanna Mannell
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany; Hospital Pharmacy, University Hospital, Ludwig-Maximilians-University, Marchioninistraße 15, München 81377, Germany; DZHK (German Center for Cardiovascular Research) partner site Munich Heart Alliance, Munich, Germany.
| |
Collapse
|