Dopamine signaling negatively regulates striatal phosphorylation of Cdk5 at tyrosine 15 in mice.
Dopamine signaling negatively regulates striatal phosphorylation of Cdk5 at tyrosine 15 in mice.
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DOI:
10.3389/fncel.2013.00012
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发表时间:
2013
影响因子:
5.3
通讯作者:
Goto S
中科院分区:
文献类型:
--
作者:
Yamamura Y;Morigaki R;Kasahara J;Yokoyama H;Tanabe A;Okita S;Koizumi H;Nagahiro S;Kaji R;Goto S
Striatal functions depend on the activity balance between the dopamine and glutamate neurotransmissions. Glutamate inputs activate cyclin-dependent kinase 5 (Cdk5), which inhibits postsynaptic dopamine signaling by phosphorylating DARPP-32 (dopamine- and cAMP-regulated phosphoprotein, 32 kDa) at Thr75 in the striatum. c-Abelson tyrosine kinase (c-Abl) is known to phosphorylate Cdk5 at Tyr15 (Tyr15-Cdk5) and thereby facilitates the Cdk5 activity. We here report that Cdk5 with Tyr15 phosphorylation (Cdk5-pTyr15) is enriched in the mouse striatum, where dopaminergic stimulation inhibited phosphorylation of Tyr15-Cdk5 by acting through the D2 class dopamine receptors. Moreover, in the 1-methyl-4-phenyl-1,2,4,6-tetrahydropyridine (MPTP) mouse model, dopamine deficiency caused increased phosphorylation of both Tyr15-Cdk5 and Thr75-DARPP-32 in the striatum, which could be attenuated by administration of L-3,4-dihydroxyphenylalanine and imatinib (STI-571), a selective c-Abl inhibitor. Our results suggest a functional link of Cdk5-pTyr15 with postsynaptic dopamine and glutamate signals through the c-Abl kinase activity in the striatum.
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影响因子:
3
作者:
Feyder M;Bonito-Oliva A;Fisone G
通讯作者:
Fisone G
影响因子:
4.3
作者:
Fernandez E;Schiappa R;Girault JA;Le Novère N
通讯作者:
Le Novère N
影响因子:
5.3
作者:
Santini, Emanuela;Valjent, Emmanuel;Fisone, Gilberto
通讯作者:
Fisone, Gilberto
影响因子:
3.3
作者:
Sako, W.;Morigaki, R.;Goto, S.
通讯作者:
Goto, S.
影响因子:
3.6
作者:
Yokoyama, Hironori;Yano, Ryohei;Araki, Tsutomu
通讯作者:
Araki, Tsutomu