1
|
Brandhofer M, Hoffmann A, Blanchet X, Siminkovitch E, Rohlfing AK, El Bounkari O, Nestele JA, Bild A, Kontos C, Hille K, Rohde V, Fröhlich A, Golemi J, Gokce O, Krammer C, Scheiermann P, Tsilimparis N, Sachs N, Kempf WE, Maegdefessel L, Otabil MK, Megens RTA, Ippel H, Koenen RR, Luo J, Engelmann B, Mayo KH, Gawaz M, Kapurniotu A, Weber C, von Hundelshausen P, Bernhagen J. Heterocomplexes between the atypical chemokine MIF and the CXC-motif chemokine CXCL4L1 regulate inflammation and thrombus formation. Cell Mol Life Sci 2022; 79:512. [PMID: 36094626 PMCID: PMC9468113 DOI: 10.1007/s00018-022-04539-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 01/28/2022] [Revised: 07/31/2022] [Accepted: 08/22/2022] [Indexed: 12/03/2022]
Abstract
To fulfil its orchestration of immune cell trafficking, a network of chemokines and receptors developed that capitalizes on specificity, redundancy, and functional selectivity. The discovery of heteromeric interactions in the chemokine interactome has expanded the complexity within this network. Moreover, some inflammatory mediators, not structurally linked to classical chemokines, bind to chemokine receptors and behave as atypical chemokines (ACKs). We identified macrophage migration inhibitory factor (MIF) as an ACK that binds to chemokine receptors CXCR2 and CXCR4 to promote atherogenic leukocyte recruitment. Here, we hypothesized that chemokine–chemokine interactions extend to ACKs and that MIF forms heterocomplexes with classical chemokines. We tested this hypothesis by using an unbiased chemokine protein array. Platelet chemokine CXCL4L1 (but not its variant CXCL4 or the CXCR2/CXCR4 ligands CXCL8 or CXCL12) was identified as a candidate interactor. MIF/CXCL4L1 complexation was verified by co-immunoprecipitation, surface plasmon-resonance analysis, and microscale thermophoresis, also establishing high-affinity binding. We next determined whether heterocomplex formation modulates inflammatory/atherogenic activities of MIF. Complex formation was observed to inhibit MIF-elicited T-cell chemotaxis as assessed by transwell migration assay and in a 3D-matrix-based live cell-imaging set-up. Heterocomplexation also blocked MIF-triggered migration of microglia in cortical cultures in situ, as well as MIF-mediated monocyte adhesion on aortic endothelial cell monolayers under flow stress conditions. Of note, CXCL4L1 blocked binding of Alexa-MIF to a soluble surrogate of CXCR4 and co-incubation with CXCL4L1 attenuated MIF responses in HEK293-CXCR4 transfectants, indicating that complex formation interferes with MIF/CXCR4 pathways. Because MIF and CXCL4L1 are platelet-derived products, we finally tested their role in platelet activation. Multi-photon microscopy, FLIM-FRET, and proximity-ligation assay visualized heterocomplexes in platelet aggregates and in clinical human thrombus sections obtained from peripheral artery disease (PAD) in patients undergoing thrombectomy. Moreover, heterocomplexes inhibited MIF-stimulated thrombus formation under flow and skewed the lamellipodia phenotype of adhering platelets. Our study establishes a novel molecular interaction that adds to the complexity of the chemokine interactome and chemokine/receptor-network. MIF/CXCL4L1, or more generally, ACK/CXC-motif chemokine heterocomplexes may be target structures that can be exploited to modulate inflammation and thrombosis.
Collapse
Affiliation(s)
- Markus Brandhofer
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Adrian Hoffmann
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany.,Department of Anesthesiology, LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Xavier Blanchet
- Institute for Cardiovascular Prevention (IPEK), LMU University Hospital (LMU Klinikum), Ludwig-Maximilians-Universität (LMU) München, Pettenkofer Straße 8a/9, 80336, Munich, Germany
| | - Elena Siminkovitch
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Anne-Katrin Rohlfing
- Department of Cardiology and Angiology, University Hospital Tübingen, Eberhard Karls University Tübingen, 72076, Tübingen, Germany
| | - Omar El Bounkari
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Jeremy A Nestele
- Department of Cardiology and Angiology, University Hospital Tübingen, Eberhard Karls University Tübingen, 72076, Tübingen, Germany
| | - Alexander Bild
- Department of Cardiology and Angiology, University Hospital Tübingen, Eberhard Karls University Tübingen, 72076, Tübingen, Germany
| | - Christos Kontos
- Division of Peptide Biochemistry, TUM School of Life Sciences, Technische Universität München (TUM), 85354, Freising, Germany
| | - Kathleen Hille
- Division of Peptide Biochemistry, TUM School of Life Sciences, Technische Universität München (TUM), 85354, Freising, Germany
| | - Vanessa Rohde
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Adrian Fröhlich
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Jona Golemi
- Systems Neuroscience Group, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Ozgun Gokce
- Systems Neuroscience Group, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany
| | - Christine Krammer
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Patrick Scheiermann
- Department of Anesthesiology, LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Nikolaos Tsilimparis
- Department of Vascular Surgery, LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Nadja Sachs
- Department for Vascular and Endovascular Surgery, Klinikum Rechts Der Isar, Technische Universität München (TUM), 81675, Munich, Germany.,Munich Heart Alliance, 80802, Munich, Germany
| | - Wolfgang E Kempf
- Department for Vascular and Endovascular Surgery, Klinikum Rechts Der Isar, Technische Universität München (TUM), 81675, Munich, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum Rechts Der Isar, Technische Universität München (TUM), 81675, Munich, Germany.,Munich Heart Alliance, 80802, Munich, Germany
| | - Michael K Otabil
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Remco T A Megens
- Institute for Cardiovascular Prevention (IPEK), LMU University Hospital (LMU Klinikum), Ludwig-Maximilians-Universität (LMU) München, Pettenkofer Straße 8a/9, 80336, Munich, Germany.,Munich Heart Alliance, 80802, Munich, Germany.,Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER, Maastricht, The Netherlands
| | - Hans Ippel
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER, Maastricht, The Netherlands
| | - Rory R Koenen
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER, Maastricht, The Netherlands
| | - Junfu Luo
- Vascular Biology and Pathology, Institute of Laboratory Medicine, Ludwig-Maximilians-Universität, LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Bernd Engelmann
- Vascular Biology and Pathology, Institute of Laboratory Medicine, Ludwig-Maximilians-Universität, LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Kevin H Mayo
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER, Maastricht, The Netherlands.,Department of Biochemistry, Molecular Biology and Biophysics, Health Sciences Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Meinrad Gawaz
- Department of Cardiology and Angiology, University Hospital Tübingen, Eberhard Karls University Tübingen, 72076, Tübingen, Germany
| | - Aphrodite Kapurniotu
- Division of Peptide Biochemistry, TUM School of Life Sciences, Technische Universität München (TUM), 85354, Freising, Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention (IPEK), LMU University Hospital (LMU Klinikum), Ludwig-Maximilians-Universität (LMU) München, Pettenkofer Straße 8a/9, 80336, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany.,Munich Heart Alliance, 80802, Munich, Germany.,Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER, Maastricht, The Netherlands
| | - Philipp von Hundelshausen
- Institute for Cardiovascular Prevention (IPEK), LMU University Hospital (LMU Klinikum), Ludwig-Maximilians-Universität (LMU) München, Pettenkofer Straße 8a/9, 80336, Munich, Germany. .,Munich Heart Alliance, 80802, Munich, Germany.
| | - Jürgen Bernhagen
- Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU University Hospital, Ludwig-Maximilians-Universität (LMU) München, Feodor-Lynen-Straße 17, 81377, Munich, Germany. .,Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany. .,Munich Heart Alliance, 80802, Munich, Germany.
| |
Collapse
|