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El-Mortada F, Landelouci K, Bertrand-Perron S, Aubé FA, Poirier A, Bidias A, Jourdi G, Welman M, Gantier MP, Hamilton JR, Kile B, Lordkipanidzé M, Pépin G. Megakaryocytes possess a STING pathway that is transferred to platelets to potentiate activation. Life Sci Alliance 2024; 7:e202302211. [PMID: 37993259 PMCID: PMC10665521 DOI: 10.26508/lsa.202302211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023] Open
Abstract
Platelets display unexpected roles in immune and coagulation responses. Emerging evidence suggests that STING is implicated in hypercoagulation. STING is an adaptor protein downstream of the DNA sensor cyclic GMP-AMP synthase (cGAS) that is activated by cytosolic microbial and self-DNA during infections, and in the context of loss of cellular integrity, to instigate the production of type-I IFN and pro-inflammatory cytokines. To date, whether the cGAS-STING pathway is present in platelets and contributes to platelet functions is not defined. Using a combination of pharmacological and genetic approaches, we demonstrate here that megakaryocytes and platelets possess a functional cGAS-STING pathway. Our results suggest that in megakaryocytes, STING stimulation activates a type-I IFN response, and during thrombopoiesis, cGAS and STING are transferred to proplatelets. Finally, we show that both murine and human platelets contain cGAS and STING proteins, and the cGAS-STING pathway contributes to potentiation of platelet activation and aggregation. Taken together, these observations establish for the first time a novel role of the cGAS-STING DNA sensing axis in the megakaryocyte and platelet lineage.
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Affiliation(s)
- Firas El-Mortada
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Karima Landelouci
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Samuel Bertrand-Perron
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Félix-Antoine Aubé
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Amélie Poirier
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Amel Bidias
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Georges Jourdi
- Centre de Recherche, Institut de Cardiologie de Montréal, Montréal, Canada
- Faculté de Pharmacie, Université de Montréal, Montréal, Canada
| | - Mélanie Welman
- Centre de Recherche, Institut de Cardiologie de Montréal, Montréal, Canada
- Faculté de Pharmacie, Université de Montréal, Montréal, Canada
| | - Michael P Gantier
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, Australia
| | - Justin R Hamilton
- Australian Centre for Blood Diseases, Monash University, Melbourne, Australia
- CSL Innovation, Melbourne, Australia
| | - Benjamin Kile
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
| | - Marie Lordkipanidzé
- Centre de Recherche, Institut de Cardiologie de Montréal, Montréal, Canada
- Faculté de Pharmacie, Université de Montréal, Montréal, Canada
| | - Geneviève Pépin
- https://ror.org/02xrw9r68 Groupe de Recherche en Signalisation Cellulaire, Département de Biologie Médicale, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
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