Tyrosine 402 phosphorylation of Pyk2 is involved in ionomycin-induced neurotransmitter release.
Tyrosine 402 phosphorylation of Pyk2 is involved in ionomycin-induced neurotransmitter release.
复制标题
Pyk2 酪氨酸 402 磷酸化参与离子霉素诱导的神经递质释放
DOI:
10.1371/journal.pone.0094574
复制
发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Chen N
中科院分区:
文献类型:
--
作者:
Zhang Z;Zhang Y;Mou Z;Chu S;Chen X;He W;Guo X;Yuan Y;Takahashi M;Chen N
Protein tyrosine kinases, which are highly expressed in the central nervous system, are implicated in many neural processes. However, the relationship between protein tyrosine kinases and neurotransmitter release remains unknown. In this study, we found that ionomycin, a Ca2+ ionophore, concurrently induced asynchronous neurotransmitter release and phosphorylation of a non-receptor protein tyrosine kinase, proline-rich tyrosine kinase 2 (Pyk2), in clonal rat pheochromocytoma PC12 cells and cerebellar granule cells, whereas introduction of Pyk2 siRNA dramatically suppressed ionomycin-induced neurotransmitter release. Further study indicated that Tyr-402 (Y402) in Pyk2, instead of other tyrosine sites, underwent rapid phosphorylation after ionomycin induction in 1 min to 2 min. We demonstrated that the mutant of Pyk2 Y402 could abolish ionomycin-induced dopamine (DA) release by transfecting cells with recombinant Pyk2 and its mutants (Y402F, Y579F, Y580F, and Y881F). In addition, Src inhibition could prolong phosphorylation of Pyk2 Y402 and increase DA release. These findings suggested that Pyk2 was involved in ionomycin-induced neurotransmitter release through phosphorylation of Y402.
登录
查看更多内容
影响因子:
4.7
作者:
HARRIS, KM;SULTAN, P
通讯作者:
SULTAN, P
影响因子:
5.3
作者:
Bruzzaniti, Angela;Neff, Lynn;Baron, Roland
通讯作者:
Baron, Roland
影响因子:
3.4
作者:
BURGAYA, F;MENEGON, A;GIRAULT, JA
通讯作者:
GIRAULT, JA
影响因子:
64.8
作者:
LEV, S;MORENO, H;SCHLESSINGER, J
通讯作者:
SCHLESSINGER, J
影响因子:
21.3
作者:
Ivankovic-Dikic, I;Grönroos, E;Dikic, I
通讯作者:
Dikic, I