首页> 外文期刊>Cellular Signalling >Muscarinic receptor stimulation induces TASK1 channel endocytosis through a PKC-Pyk2-Src pathway in PC12 cells
【24h】

Muscarinic receptor stimulation induces TASK1 channel endocytosis through a PKC-Pyk2-Src pathway in PC12 cells

机译:肌肉蛋白受体刺激通过PC12细胞中的PKC-PYK2-SRC途径诱导任务1通道内吞作用

获取原文
获取原文并翻译 | 示例
       

摘要

Muscarinic receptor stimulation or protein kinase C (PKC) activation in rat adrenal medullary and PC12 cells rapidly induces tyrosine phosphorylation of TWIK-related-acid-sensitive K+ 1 (TASK1) channels with the subsequent clathrin-dependent endocytosis. Our previous study suggested that the muscarinic signal is transmitted to the non-receptor tyrosine kinase Src through PKC and Pyk2. Although PKC activation is known to stimulate Pyk2 in certain types of cells, its molecular mechanism remains unclear. In this study, proximity ligation assay (PLA) and other molecular biological approaches were used to elucidate the details of this muscarinic signaling in PC12 cells. When green fluorescent protein (GFP)-TASK1 was expressed, the majority of GFP-TASK1 was located at the cell periphery. However, the simultaneous expression of GFP-TASK1 and PKC alpha, but not PKC delta, led to GFP-TASK1 internalization. Muscarinic receptor stimulation resulted in transient co-localization of Pyk2 and Src at the cell periphery, and expression of kinase dead (KD) Pyk2 and Src, but not Pyk2 and KD Src, resulted in GFP-TASK1 internalization. PLA analysis revealed that in response to muscarine, PKCa activates Pyk2 through phosphorylating its serine residues. These results indicate that muscarinic receptor stimulation induces TASK1 channel endocytosis sequentially through PKCa, Pyk2, and Src, and PKCa activates Pyk2 through phosphorylation.
机译:肌肉蛋白受体刺激或蛋白激酶C(PKC)活化在大鼠肾上腺髓质和PC12细胞中快速诱导TWIK相关酸敏感k + 1(任务1)通道的酪氨酸磷酸化,随后的克拉螯盐依赖性内吞作用。我们以前的研究表明,毒蕈碱信号通过PKC和PYK2传递给非受体酪氨酸激酶SRC。虽然已知PKC活化在某些类型的细胞中刺激Pyk2,但其分子机制仍然不清楚。在该研究中,使用邻近结扎测定(PLA)和其他分子生物学方法来阐明PC12细胞中这种毒蕈碱信号传导的细节。当表达绿色荧光蛋白(GFP)-Task1时,大多数GFP-Task1位于细胞周边。然而,GFP-Task1和PKCα的同时表达,而不是PKC DELTA,导致GFP-Task1内化。 Muscarinic受体刺激导致Pyk2和Src的瞬时共定位在细胞周边,并且激酶死(Kd)pyk2和src的表达,但不是Pyk2和Kd src,导致GFP-Task1内化。 PLA分析显示,响应于麝香氨酸,PKCA通过磷酸化其丝氨酸残基激活PyK2。这些结果表明,毒蕈碱受体刺激通过PKCA,PyK2和SRC依次诱导任务1通道内吞作用,PKCA通过磷酸化激活PyK2。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号