Abstract:
:Platelets enhance thrombin generation at sites of vascular injury by exposing phosphatidylserine during necrosis-like cell death. Anoctamin 6 (Ano6) is required for Ca(2+)-dependent phosphatidylserine exposure and is defective in patients with Scott syndrome, a rare bleeding disorder. Ano6 may also form Cl(-) channels, though the role of Cl(-) fluxes in platelet procoagulant activity has not been explored. We found that Cl(-) channel blockers or removal of extracellular Cl(-) inhibited agonist-induced phosphatidylserine exposure. However, this was not due to direct inhibition of Ca(2+)-dependent scrambling since Ca(2+) ionophore-induced phosphatidylserine exposure was normal. This implies that the role of Ano6 in Ca(2+-)dependent PS exposure is likely to differ from any putative function of Ano6 as a Cl(-) channel. Instead, Cl(-) channel blockade inhibited agonist-induced Ca(2+) entry. Importantly, Cl(-) channel blockers also prevented agonist-induced membrane hyperpolarization, resulting in depolarization. We propose that Cl(-) entry through Cl(-) channels is required for this hyperpolarization, maintaining the driving force for Ca(2+) entry and triggering full phosphatidylserine exposure. This demonstrates a novel role for Cl(-) channels in controlling platelet death and procoagulant activity.
journal_name
Cell Death Disjournal_title
Cell death & diseaseauthors
Harper MT,Poole AWdoi
10.1038/cddis.2013.495subject
Has Abstractpub_date
2013-12-19 00:00:00pages
e969issn
2041-4889pii
cddis2013495journal_volume
4pub_type
杂志文章abstract::The glutamate-induced excitotoxicity pathway has been reported in several neurodegenerative diseases. Molecules that inhibit the release of glutamate or cause the overactivation of glutamate receptors can minimize neuronal cell death in these diseases. Osmotin, a homolog of mammalian adiponectin, is a plant protein fr...
journal_title:Cell death & disease
pub_type: 杂志文章
doi:10.1038/cddis.2013.538
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abstract::MicroRNAs are key regulators of many biological processes, including cell differentiation. These small RNAs exert their function assembled in the RNA-induced silencing complexes (RISCs), where members of Argonaute (Ago) family of proteins provide a unique platform for target recognition and gene silencing. Here, by us...
journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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abstract::Alzheimer's Disease (AD) is the most common neurodegenerative disorder in the elderly. Beta-amyloid (Aβ) peptide accumulation is considered as a primary cause of AD pathogenesis, with defective autophagy in patients' brains. Enhanced autophagic activity has been reported to promote Aβ clearance in vitro and in vivo mo...
journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2017-02-02 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2019-01-25 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2018-05-01 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2018-02-08 00:00:00
abstract::Following the publication of this article, the authors realized there was an error in Figure 6H in which two versions of the figure appear.This does not impact the conclusions of the article. ...
journal_title:Cell death & disease
pub_type: 已发布勘误
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更新日期:2019-08-23 00:00:00
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章,收录出版
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2017-05-04 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2018-03-14 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2010-11-04 00:00:00
abstract::Peroxiredoxin (Prdx) 2 is an antioxidant protein that utilizes its redox-sensitive cysteine groups to reduce hydrogen peroxide molecules and protect cells against oxidative damage from reactive oxygen species (ROS). However, its function in trophoblasts at the maternal-fetal interface has not been clarified yet. In th...
journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2017-06-29 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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