Cited by 60Extracellular vesicles in diseaseCell death mechanisms and regulationCellular transport and secretion

Analysis of extracellular vesicles generated from monocytes under conditions of lytic cell death

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Baxter, Amy A., Phan, Thanh Kha, Hanssen, Eric, Liem, Michael, Hulett, Mark D., Mathivanan, Suresh, Poon, Ivan K. H.·2019·Scientific Reports

Abstract

Extracellular vesicles (EVs) are an important class of membrane-bound structures that have been widely investigated for their roles in intercellular communication in the contexts of tumor progression, vascular function, immunity and regenerative medicine. Much of the current knowledge on the functions of EVs pertains to those derived from viable cells (e.g. exosomes and microvesicles) or apoptotic cells (e.g. apoptotic bodies) whilst the generation of EVs from dying cells under non-apoptotic conditions remains poorly characterized. Herein, the release of EVs from THP-1 monocytes under conditions of primary necrosis, secondary necrosis and pyroptosis, was investigated. A comprehensive analysis of THP-1-derived EVs revealed that cells undergoing lytic forms of cell death generated a high number of EVs compared with viable or apoptotic cells in vitro. Differential centrifugation via 16,000 g and 100,000 g revealed that dying THP-1 cells release both medium and small EVs, respectively, consistent with the known characteristics of microvesicles and/or exosomes. In addition, large EVs isolated via 2000 g centrifugation were also present in all samples. These findings suggest that lytic cell death under both sterile and non-sterile inflammatory conditions induces monocytes to generate EVs, which could potentially act as mediators of cell-to-cell communication.

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Authors
Baxter, A. A., Phan, T. K., Hanssen, E., Liem, M., Hulett, M. D., Mathivanan, S., & Poon, I. K. H.
Affiliations
  • La Trobe University (AU)
  • The University of Melbourne (AU)
Corresponding author
  • Baxter, Amy A.
  • Poon, Ivan K. H.
Venue
Scientific Reports
Published
2019-05-17
Volume
9
Issue
1
Pages
7538-7538
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2945956317
Cited by
60
References
52
Citations by year
2026: 4 · 2025: 3 · 2024: 11 · 2023: 11 · 2022: 9 · 2021: 13 · 2020: 6 · 2019: 2
FWCI
2.48
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Medical Research Council
  • Australian Research Council (DP170103790, GNT1125033)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
extracellular vesicles, lytic cell death, monocytes, THP-1 cells, necrosis, secondary necrosis, pyroptosis, exosomes, microvesicles, sterile inflammation, cell-to-cell communication
MeSH terms
Extracellular Vesicles, THP-1 Cells, Cell Communication, Centrifugation, Humans, Monocytes, Cell Death, Cell Line, Tumor, Cell-Derived Microparticles, Exosomes

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