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Papareddy P, Tapken I, Kroh K, Varma Bhongir RK, Rahman M, Baumgarten M, Cim EI, Györffy L, Smeds E, Neumann A, Veerla S, Olinder J, Thorlacus H, Ryden C, Bartakova E, Holub M, Herwald H. The role of extracellular vesicle fusion with target cells in triggering systemic inflammation. Nat Commun 2024; 15:1150. [PMID: 38326335 PMCID: PMC10850166 DOI: 10.1038/s41467-024-45125-1] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 01/16/2024] [Indexed: 02/09/2024] Open
Abstract
Extracellular vesicles (EVs) play a crucial role in intercellular communication by transferring bioactive molecules from donor to recipient cells. As a result, EV fusion leads to the modulation of cellular functions and has an impact on both physiological and pathological processes in the recipient cell. This study explores the impact of EV fusion on cellular responses to inflammatory signaling. Our findings reveal that fusion renders non-responsive cells susceptible to inflammatory signaling, as evidenced by increased NF-κB activation and the release of inflammatory mediators. Syntaxin-binding protein 1 is essential for the merge and activation of intracellular signaling. Subsequent analysis show that EVs transfer their functionally active receptors to target cells, making them prone to an otherwise unresponsive state. EVs in complex with their agonist, require no further stimulation of the target cells to trigger mobilization of NF-κB. While receptor antagonists were unable to inhibit NF-κB activation, blocking of the fusion between EVs and their target cells with heparin mitigated inflammation in mice challenged with EVs.
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Affiliation(s)
- Praveen Papareddy
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden.
| | - Ines Tapken
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
- SMATHERIA gGmbH - Non-Profit Biomedical Research Institute, Hannover, Germany
- Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Keshia Kroh
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Viroscience, Erasmus Medical Center, Rotterdam, the Netherlands
| | | | - Milladur Rahman
- Section of Surgery, Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Maria Baumgarten
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Eda Irem Cim
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Lilla Györffy
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Emanuel Smeds
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Ariane Neumann
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Srinivas Veerla
- Division of Oncology and Pathology, Lund, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Jon Olinder
- Division of Infection Medicine, Helsingborg Hospital and Department of Clinical Sciences Helsingborg, Lund University, Lund, Sweden
| | - Henrik Thorlacus
- Section of Surgery, Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Cecilia Ryden
- Division of Infection Medicine, Helsingborg Hospital and Department of Clinical Sciences Helsingborg, Lund University, Lund, Sweden
| | - Eva Bartakova
- Department of Infectious Diseases, First Faculty of Medicine, Charles University and Military University Hospital Prague, Praha, Czech Republic
| | - Michal Holub
- Department of Infectious Diseases, First Faculty of Medicine, Charles University and Military University Hospital Prague, Praha, Czech Republic
| | - Heiko Herwald
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden.
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