Peptide neurotransmitters activate a cation channel complex of NALCN and UNC-80.
Peptide neurotransmitters activate a cation channel complex of NALCN and UNC-80.
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肽神经递质激活 NALCN 和 UNC-80 的阳离子通道复合物。
DOI:
10.1038/nature07579
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发表时间:
2009-02-05
期刊:
影响因子:
64.8
通讯作者:
Ren, Dejian
中科院分区:
文献类型:
--
作者:
Lu, Boxun;Su, Yanhua;Das, Sudipto;Wang, Haikun;Wang, Yan;Liu, Jin;Ren, Dejian
Several neurotransmitters act through G-protein coupled receptors (GPCR) to evoke a “slow” excitation of neurons. These include peptides, such as substance P (SP) and neurotensin (NT), as well as acetylcholine and noradrenaline. Unlike the fast (~ ms) ionotropic actions of small molecule neurotransmitters, the slow excitation is not well understood at the molecular level, but can be mainly attributed to suppressing K+ currents and/or activating a non-selective cation channel. The molecular identity of this cation channel has yet to be determined; similarly how the channel is activated and its relative contribution to neuronal excitability induced by the neuropeptides are unknown. Here, we show that, in the hippocampal and ventral tegmental area neurons, SP and NT activate a channel complex containing NALCN and a large novel protein UNC-80. The activation by SP through NK1R (a GPCR for SP) is via a unique mechanism: it does not require G-protein activation but is dependent on Src family kinases (SFKs). These findings identify NALCN as the cation channel activated by SP receptor, and suggest that UNC-80 and SFKs, rather than a G-protein, are involved in the coupling from receptor to channel.
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DOI:
10.1073/pnas.190276697
发表时间:
2000-09-26
影响因子:
11.1
作者:
DeFea, KA;Vaughn, ZD;Bunnett, NW
通讯作者:
Bunnett, NW
影响因子:
9.2
作者:
Humphrey, John A.;Hamming, Kevin S.;Nash, Howard A.
通讯作者:
Nash, Howard A.
影响因子:
3.3
作者:
MASUKO, S;NAKAJIMA, S;NAKAJIMA, Y
通讯作者:
NAKAJIMA, Y
影响因子:
5.3
作者:
Peña, F;Ramirez, JM
通讯作者:
Ramirez, JM
影响因子:
2.5
作者:
INOUE, K;NAKAZAWA, K;FUJIMORI, K
通讯作者:
FUJIMORI, K