Cited by 87Extracellular vesicles in diseaseBlood transfusion and managementPlatelet Disorders and Treatments

Platelet‐derived extracellular vesicles convey mitochondrial DAMPs in platelet concentrates and their levels are associated with adverse reactions

Marcoux, Genevieve, Magron, Audrey, Sut, Caroline, Laroche, Audree, Laradi, Sandrine, Hamzeh‐Cognasse, Hind, Allaeys, Isabelle, Cabon, Ophelie +4 more·2019·Transfusion

Abstract

BACKGROUND: Whereas platelet transfusion is a common medical procedure, inflammation still occurs in a fraction of transfused individuals despite the absence of any apparent infectious agents. Platelets can shed membrane vesicles, called extracellular vesicles (EVs), some of which contain mitochondria (mito+EV). With its content of damage‐associated molecular pattern (DAMP), the mitochondrion can stimulate the innate immune system. Mitochondrial DNA (mtDNA) is a recognized DAMP detected in the extracellular milieu in numerous inflammatory conditions and in platelet concentrates. We hypothesized that platelet‐derived mitochondria encapsulated in EVs may represent a reservoir of mtDNA. STUDY DESIGN AND METHODS: Herein, we explored the implication of mito+EVs in the occurrence of mtDNA quantified in platelet concentrate supernatants that induced or did not induce transfusion adverse reactions. RESULTS: We observed that EVs were abundant in platelet concentrates, and platelet‐derived mito+EVs were more abundant in platelet concentrates that induced adverse reactions. A significant correlation (r s = 0.73; p < 0.0001) between platelet‐derived mito+EV levels and mtDNA concentrations was found. However, there was a nonsignificant correlation between the levels of EVs without mitochondria and mtDNA concentrations (r s = −0.11; p = 0.5112). The majority of the mtDNA was encapsulated into EVs. CONCLUSION: This study suggests that platelet‐derived EVs, such as those that convey mitochondrial DAMPs, may be a useful biomarker for the prediction of potential risk of adverse transfusion reactions. Moreover, our work implies that investigations are necessary to determine whether there is a causal pathogenic role of mitochondrial DAMP encapsulated in EVs as opposed to mtDNA in solution.

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Crossref · 10.1111/trf.15300

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Authors
Marcoux, G., Magron, A., Sut, C., Laroche, A., Laradi, S., Hamzeh‐Cognasse, H., Allaeys, I., Cabon, O., Julien, A., Garraud, O., Cognasse, F., & Boilard, E.
Affiliations
  • Department of Infectious Diseases and Immunity Centre de Recherche du CHU de Québec ‐ Université Laval Quebec City Québec Canada
  • Centre de recherche du CHU de Québec-Université Laval (CA)
  • Université de Lyon (FR)
  • Université Laval (CA)
Corresponding author
Cognasse, Fabrice
Venue
Transfusion
Publisher
Wiley
Published
2019-04-11
Volume
59
Issue
7
Pages
2403-2414
ISSN
  • 0041-1132 (ISSN-L)
  • 1537-2995
OpenAlex
W2938872713
Cited by
87
References
67
Citations by year
2026: 4 · 2025: 18 · 2024: 11 · 2023: 15 · 2022: 15 · 2021: 9 · 2020: 13 · 2019: 2
FWCI
3.23
Type
journal article
Language
en
Open access
closed
Locations
  • Transfusion (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Canadian Blood Services
  • Canadian Institutes of Health Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Health Sciences › Medicine › Biochemistry › Blood transfusion and management
  • Health Sciences › Medicine › Hematology › Platelet Disorders and Treatments
Keywords
platelet-derived extracellular vesicles, mitochondrial DAMPs, mitochondrial DNA, platelet concentrates, transfusion reactions, innate immunity
MeSH terms
Extracellular Vesicles, Blood Platelets, DNA, Mitochondrial, Humans, Inflammation, Platelet Transfusion, Transfusion Reaction

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