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Modulation of endothelial organelle size as an antithrombotic strategy
Open accessPublished version of a preprint
Abstract
BACKGROUND: It is long established that von Willebrand factor (VWF) is central to hemostasis and thrombosis. Endothelial VWF is stored in cell-specific secretory granules, Weibel-Palade bodies (WPBs), organelles generated in a wide range of lengths (0.5-5.0 µm). WPB size responds to physiological cues and pharmacological treatment, and VWF secretion from shortened WPBs dramatically reduces platelet and plasma VWF adhesion to an endothelial surface. OBJECTIVE: We hypothesized that WPB-shortening represented a novel target for antithrombotic therapy. Our objective was to determine whether compounds exhibiting this activity do exist. METHODS: Using a microscopy approach coupled to automated image analysis, we measured the size of WPB bodies in primary human endothelial cells treated with licensed compounds for 24 hours. RESULTS AND CONCLUSIONS: A novel approach to identification of antithrombotic compounds generated a significant number of candidates with the ability to shorten WPBs. In vitro assays of two selected compounds confirm that they inhibit the pro-hemostatic activity of secreted VWF. This set of compounds acting at a very early stage of the hemostatic process could well prove to be a useful adjunct to current antithrombotic therapeutics. Further, in the current SARS-CoV-2 pandemic, with a considerable fraction of critically ill COVID-19 patients affected by hypercoagulability, these WPB size-reducing drugs might also provide welcome therapeutic leads for frontline clinicians and researchers.
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Cites
Coagulopathy and Antiphospholipid Antibodies in Patients with Covid-19
Zhang, Y., Xiao, M., Zhang, S., Xia, P., Cao, W., Jiang, W., Chen, H., Ding, X., Zhao, H., Zhang, H., et al. (2020) · New England Journal of Medicine · doi:10.1056/nejmc2007575 · Cited by 2,179
Identification and characterization of Cardiac Glycosides as senolytic compounds
Triana-Martínez, F., Picallos-Rabina, P., Da Silva-Álvarez, S., Pietrocola, F., Llanos, S., Rodilla, V., Soprano, E., Pedrosa, P., Ferreirós, A., Barradas, M., et al. (2019) · Nature Communications · doi:10.1038/s41467-019-12888-x · Cited by 384
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Metadata
- Authors
- Ferraro, F., Patella, F., Costa, J. R., Ketteler, R., Kriston‐Vizi, J., & Cutler, D. F.
- Affiliations
- MRC Laboratory for Molecular Cell Biology (GB)
- Corresponding author
- Ferraro, Francesco
- Cutler, Daniel F.
- ORCID
- Venue
- Journal of Thrombosis and Haemostasis
- Publisher
- Elsevier BV
- Published
- 2020-12
- Volume
- 18
- Issue
- 12
- Pages
- 3296-3308
- ISSN
- 1538-7836 (ISSN-L)
- PMC
- PMC8436738
- OpenAlex
- W3081683736
- Cited by
- 19
- References
- 2
- Citations by year
- 2024: 6 · 2023: 4 · 2022: 2 · 2021: 5 · 2020: 2
- FWCI
- 2.05
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Thrombosis and Haemostasis (publishedVersion, cc-by)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Funders
- Medical Research Council (MC_U12266B, MC_UU_12018/2)
- Topics
- Health Sciences › Medicine › Hematology › Platelet Disorders and Treatments
- Health Sciences › Medicine › Hematology › Blood Coagulation and Thrombosis Mechanisms
- Health Sciences › Medicine › Hematology › Blood properties and coagulation
- Keywords
- von Willebrand factor, Weibel-Palade bodies, antithrombotic therapy, VWF secretion, platelet adhesion, hemostasis, thrombosis, hypercoagulability, COVID-19 pandemic, SARS-CoV-2, drug screening
- MeSH terms
- Cells, Cultured, Drug Evaluation, Preclinical, Fibrinolytic Agents, Hemostasis, Humans, von Willebrand Factor, Weibel-Palade Bodies, Organelle Size, Drug Repositioning, Human Umbilical Vein Endothelial Cells
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