The nuts and bolts of the platelet release reaction

Secretion is essential to many of the roles that platelets play in the vasculature, e.g., thrombosis, angiogenesis, and inflammation, enabling platelets to modulate the microenvironment at sites of vascular lesions with a myriad of bioactive molecules stored in their granules. Past studies demonstra...

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Main Authors: Smita Joshi, Sidney W. Whiteheart
Format: Article
Language:English
Published: Taylor & Francis Group 2017-02-01
Series:Platelets
Subjects:
Online Access:http://dx.doi.org/10.1080/09537104.2016.1240768
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author Smita Joshi
Sidney W. Whiteheart
author_facet Smita Joshi
Sidney W. Whiteheart
author_sort Smita Joshi
collection DOAJ
description Secretion is essential to many of the roles that platelets play in the vasculature, e.g., thrombosis, angiogenesis, and inflammation, enabling platelets to modulate the microenvironment at sites of vascular lesions with a myriad of bioactive molecules stored in their granules. Past studies demonstrate that granule cargo release is mediated by Soluble NSF Attachment Protein Receptor (SNARE) proteins, which are required for granule-plasma membrane fusion. Several SNARE regulators, which control when, where, and how the SNAREs interact, have been identified in platelets. Additionally, platelet SNAREs are controlled by post-translational modifications, e.g., phosphorylation and acylation. Although there have been many recent insights into the mechanisms of platelet secretion, many questions remain: have we identified all the important regulators, does calcium directly control the process, and is platelet secretion polarized. In this review, we focus on the mechanics of platelet secretion and discuss how the secretory machinery functions in the pathway leading to membrane fusion and cargo release.
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spelling doaj.art-e151c20948dc4795aa78f38b5ae5bfd22023-09-15T10:26:29ZengTaylor & Francis GroupPlatelets0953-71041369-16352017-02-0128212913710.1080/09537104.2016.12407681240768The nuts and bolts of the platelet release reactionSmita Joshi0Sidney W. Whiteheart1University of KentuckyUniversity of KentuckySecretion is essential to many of the roles that platelets play in the vasculature, e.g., thrombosis, angiogenesis, and inflammation, enabling platelets to modulate the microenvironment at sites of vascular lesions with a myriad of bioactive molecules stored in their granules. Past studies demonstrate that granule cargo release is mediated by Soluble NSF Attachment Protein Receptor (SNARE) proteins, which are required for granule-plasma membrane fusion. Several SNARE regulators, which control when, where, and how the SNAREs interact, have been identified in platelets. Additionally, platelet SNAREs are controlled by post-translational modifications, e.g., phosphorylation and acylation. Although there have been many recent insights into the mechanisms of platelet secretion, many questions remain: have we identified all the important regulators, does calcium directly control the process, and is platelet secretion polarized. In this review, we focus on the mechanics of platelet secretion and discuss how the secretory machinery functions in the pathway leading to membrane fusion and cargo release.http://dx.doi.org/10.1080/09537104.2016.1240768exocytosismunc13munc18rabsnaresstxbp5
spellingShingle Smita Joshi
Sidney W. Whiteheart
The nuts and bolts of the platelet release reaction
Platelets
exocytosis
munc13
munc18
rab
snares
stxbp5
title The nuts and bolts of the platelet release reaction
title_full The nuts and bolts of the platelet release reaction
title_fullStr The nuts and bolts of the platelet release reaction
title_full_unstemmed The nuts and bolts of the platelet release reaction
title_short The nuts and bolts of the platelet release reaction
title_sort nuts and bolts of the platelet release reaction
topic exocytosis
munc13
munc18
rab
snares
stxbp5
url http://dx.doi.org/10.1080/09537104.2016.1240768
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