Activity-dependent secretion of alpha-synuclein by enteric neurons.
Identifieur interne : 000705 ( PubMed/Curation ); précédent : 000704; suivant : 000706Activity-dependent secretion of alpha-synuclein by enteric neurons.
Auteurs : Sébastien Paillusson [France] ; Thomas Clairembault ; Mandy Biraud ; Michel Neunlist ; Pascal DerkinderenSource :
- Journal of neurochemistry [ 1471-4159 ] ; 2013.
English descriptors
- KwdEn :
- Animals, Blotting, Western, Brefeldin A (pharmacology), Colforsin (pharmacology), Enteric Nervous System (cytology), Enteric Nervous System (secretion), Exocytosis (physiology), Intestine, Small (innervation), Neurons (cytology), Neurons (drug effects), Neurons (secretion), Parkinson Disease (metabolism), Parkinson Disease (pathology), Parkinson Disease (physiopathology), Primary Cell Culture, Protein Synthesis Inhibitors (pharmacology), Rats, alpha-Synuclein (secretion).
- MESH :
- chemical , pharmacology : Brefeldin A, Colforsin, Protein Synthesis Inhibitors.
- cytology : Enteric Nervous System, Neurons.
- drug effects : Neurons.
- innervation : Intestine, Small.
- metabolism : Parkinson Disease.
- pathology : Parkinson Disease.
- physiology : Exocytosis.
- physiopathology : Parkinson Disease.
- secretion : Enteric Nervous System, Neurons, alpha-Synuclein.
- Animals, Blotting, Western, Primary Cell Culture, Rats.
Abstract
There is growing evidence supporting a role of extracellular alpha-synuclein in the spreading of Parkinson's disease (PD) pathology. Recent pathological studies have raised the possibility that the enteric nervous system (ENS) is one of the initial sites of alpha-synuclein pathology in PD. We therefore undertook this survey to determine whether alpha-synuclein can be secreted by enteric neurons. Alpha-synuclein secretion was assessed by immunoblot analysis of the culture medium from primary culture of ENS. We show that alpha-synuclein is physiologically secreted by enteric neurons via a conventional, endoplasmic reticulum/Golgi-dependent exocytosis, in a neuronal activity-regulated manner. Our study is the first to evidence that enteric neurons are capable of secreting alpha-synuclein, thereby providing new insights into the role of the ENS in the pathophysiology of PD.
DOI: 10.1111/jnc.12131
PubMed: 23278133
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pubmed:23278133Le document en format XML
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<term>Enteric Nervous System (cytology)</term>
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<term>Exocytosis (physiology)</term>
<term>Intestine, Small (innervation)</term>
<term>Neurons (cytology)</term>
<term>Neurons (drug effects)</term>
<term>Neurons (secretion)</term>
<term>Parkinson Disease (metabolism)</term>
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<term>Protein Synthesis Inhibitors (pharmacology)</term>
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<term>alpha-Synuclein (secretion)</term>
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<front><div type="abstract" xml:lang="en">There is growing evidence supporting a role of extracellular alpha-synuclein in the spreading of Parkinson's disease (PD) pathology. Recent pathological studies have raised the possibility that the enteric nervous system (ENS) is one of the initial sites of alpha-synuclein pathology in PD. We therefore undertook this survey to determine whether alpha-synuclein can be secreted by enteric neurons. Alpha-synuclein secretion was assessed by immunoblot analysis of the culture medium from primary culture of ENS. We show that alpha-synuclein is physiologically secreted by enteric neurons via a conventional, endoplasmic reticulum/Golgi-dependent exocytosis, in a neuronal activity-regulated manner. Our study is the first to evidence that enteric neurons are capable of secreting alpha-synuclein, thereby providing new insights into the role of the ENS in the pathophysiology of PD.</div>
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<Abstract><AbstractText>There is growing evidence supporting a role of extracellular alpha-synuclein in the spreading of Parkinson's disease (PD) pathology. Recent pathological studies have raised the possibility that the enteric nervous system (ENS) is one of the initial sites of alpha-synuclein pathology in PD. We therefore undertook this survey to determine whether alpha-synuclein can be secreted by enteric neurons. Alpha-synuclein secretion was assessed by immunoblot analysis of the culture medium from primary culture of ENS. We show that alpha-synuclein is physiologically secreted by enteric neurons via a conventional, endoplasmic reticulum/Golgi-dependent exocytosis, in a neuronal activity-regulated manner. Our study is the first to evidence that enteric neurons are capable of secreting alpha-synuclein, thereby providing new insights into the role of the ENS in the pathophysiology of PD.</AbstractText>
<CopyrightInformation>© 2012 International Society for Neurochemistry.</CopyrightInformation>
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