Nitric oxide and cyclic nucleotide signal transduction modulates synaptic vesicle turnover in human model neurons
Nitric oxide and cyclic nucleotide signal transduction modulates synaptic vesicle turnover in human model neurons
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一氧化氮和环核苷酸信号转导调节人类模型神经元的突触小泡周转
DOI:
10.1111/j.1471-4159.2009.06421.x
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发表时间:
2009
影响因子:
4.7
通讯作者:
G Bicker
中科院分区:
文献类型:
--
作者:
Tegenge MA;Stern M;G Bicker
The human Ntera2 (NT2) teratocarcinoma cell line can be induced to differentiate into post‐mitotic neurons. Here, we report that the human NT2 neurons generated by a spherical aggregate cell culture method express increasing levels of typical pre‐synaptic proteins (synapsin and synaptotagmin I) along the neurite depending on the length ofin vitroculture. By employing an antibody directed against the luminal domain of synaptotagmin I and the fluorescent dyeN‐(3‐triethylammoniumpropyl)‐4‐(4‐(dibutylamino)styryl)pyridinium dibromide, we show that depolarized NT2 neurons display calcium‐dependent exo‐endocytotic synaptic vesicle recycling. NT2 neurons express the neuronal isoform of neuronal nitric oxide synthase and soluble guanylyl cyclase (sGC), the major receptor for nitric oxide (NO). We tested whether NO signal transduction modulates synaptic vesicle turnover in human NT2 neurons. NO donors and cylic guanosine‐monophosphate analogs enhanced synaptic vesicle recycling while a sGC inhibitor blocked the effect of NO donors. Two NO donors, sodium nitroprusside, and andN‐Ethyl‐2‐(1‐ethyl‐2‐hydroxy‐2‐nitrosohydrazino) ethanamine evoked vesicle exocytosis which was partially blocked by the sGC inhibitor. The activator of adenylyl cyclase, forskolin, and a cAMP analog induced synaptic vesicle recycling and exocytosis via a parallel acting protein kinase A pathway. Our data from NT2 neurons suggest that NO/cyclic nucleotide signaling pathways may facilitate neurotransmitter release in human brain cells.
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影响因子:
64.5
作者:
Arancio, O;Kiebler, M;Hawkins, RD
通讯作者:
Hawkins, RD
影响因子:
3.1
作者:
T. Matsuoka;T. Kondoh;N. Tamaki;T. Nishizaki
通讯作者:
T. Nishizaki
影响因子:
4.8
作者:
OGILVIE, P;SCHILLING, K;SCHMIDT, HHHW
通讯作者:
SCHMIDT, HHHW
影响因子:
2.5
作者:
Li, DP;Chen, SR;Pan, HL
通讯作者:
Pan, HL
影响因子:
4
作者:
Fiumara F;Milanese C;Corradi A;Giovedì S;Leitinger G;Menegon A;Montarolo PG;Benfenati F;Ghirardi M
通讯作者:
Ghirardi M