Journal article
Farnesoid X Receptor and Its Ligands Inhibit the Function of Platelets
Arteriosclerosis, thrombosis, and vascular biology, Vol.36(12), pp.2324-2333
12/01/2016
DOI: 10.1161/ATVBAHA.116.308093
PMCID: PMC5144997
PMID: 27758768
Abstract
Objective-Although initially seemingly paradoxical because of the lack of nucleus, platelets possess many transcription factors that regulate their function through DNA-independent mechanisms. These include the farnesoid X receptor (FXR), a member of the superfamily of ligand-activated transcription factors, that has been identified as a bile acid receptor. In this study, we show that FXR is present in human platelets and FXR ligands, GW4064 and 6 alpha-ethyl-chenodeoxycholic acid, modulate platelet activation nongenomically.
Approach and Results-FXR ligands inhibited the activation of platelets in response to stimulation of collagen or thrombin receptors, resulting in diminished intracellular calcium mobilization, secretion, fibrinogen binding, and aggregation. Exposure to FXR ligands also reduced integrin alpha(IIb)beta(3) outside-in signaling and thereby reduced the ability of platelets to spread and to stimulate clot retraction. FXR function in platelets was found to be associated with the modulation of cyclic guanosine monophosphate levels in platelets and associated downstream inhibitory signaling. Platelets from FXR-deficient mice were refractory to the actions of FXR agonists on platelet function and cyclic nucleotide signaling, firmly linking the nongenomic actions of these ligands to the FXR.
Conclusions-This study provides support for the ability of FXR ligands to modulate platelet activation. The atheroprotective effects of GW4064, with its novel antiplatelet effects, indicate FXR as a potential target for the prevention of atherothrombotic disease.
Details
- Title: Subtitle
- Farnesoid X Receptor and Its Ligands Inhibit the Function of Platelets
- Creators
- Leonardo A. Moraes - University of ReadingAmanda J. Unsworth - Université de LilleSakthivel Vaiyapuri - University of ReadingMarfoua S. Ali - University of ReadingParvathy Sasikumar - University of ReadingTanya Sage - University of ReadingGagan D. Flora - University of ReadingAlex P. Bye - University of ReadingNeline Kriek - University of ReadingEmilie Dorchies - Université de LilleOlivier Molendi-Coste - InsermDavid Dombrowicz - Université de LilleBart Staels - Université de LilleDavid Bishop-Bailey - Centre for LifeJonathan M. Gibbins - Centre for Life
- Resource Type
- Journal article
- Publication Details
- Arteriosclerosis, thrombosis, and vascular biology, Vol.36(12), pp.2324-2333
- DOI
- 10.1161/ATVBAHA.116.308093
- PMID
- 27758768
- PMCID
- PMC5144997
- NLM abbreviation
- Arterioscler Thromb Vasc Biol
- ISSN
- 1079-5642
- eISSN
- 1524-4636
- Publisher
- Lippincott Williams & Wilkins
- Number of pages
- 10
- Grant note
- PG/15/21/31355 / British Heart Foundation RG/09/01128094; PG/11/125/29320; RG/15/2/31224; FS/11/86/29/137 / British Heart Foundation Biotechnology and Biological Sciences Research Council; UK Research & Innovation (UKRI); Biotechnology and Biological Sciences Research Council (BBSRC)
- Language
- English
- Date published
- 12/01/2016
- Academic Unit
- Internal Medicine
- Record Identifier
- 9984949457702771
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