The Src-like Adaptor Protein 2 Regulates Colony-stimulating Factor-1 Receptor Signaling and Down-regulation*

The Src-like Adaptor Protein 2 Regulates Colony-stimulating Factor-1 Receptor Signaling and Down-regulation*
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Src 样接头蛋白 2 调节集落刺激因子 1 受体信号传导和下调*

DOI:
10.1074/jbc.m701182200
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发表时间:
2007
影响因子:
4.8
通讯作者:
C. McGlade
C. McGlade
中科院分区:
生物学2区
文献类型:
--
作者:
B. Pakuts;C. Debonneville;Larissa Liontos;Michael P. Loreto;C. McGlade

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Src样衔接蛋白2(Src-like adaptor protein 2,Src-2)是一种造血衔接蛋白,以前被认为是T细胞抗原受体(TCR)介导的信号传导的负调节因子。SHBE-2含有一个SH 3和一个SH 2结构域,随后是一个独特的羧基末端尾,这对c-Cbl结合很重要。在这里,我们描述了一种新的作用,SSTK-2在调节集落刺激因子1受体(CSF-1 R),一种受体酪氨酸激酶的重要生长和分化的骨髓细胞。在原代骨髓源性巨噬细胞中,SSCP-2与c-Cbl和CSF-1 R共免疫沉淀。使用表达CSF-1 R的鼠骨髓细胞(FD-Fms细胞),我们表明,SHBG-2是酪氨酸磷酸化的刺激后,与CSF-1和协会组成型c-Cbl和CSF-1 R。此外,我们表明,一个显性负性形式的SSTK-2的表达损害c-Cbl协会与CSF-1 R和受体泛素化。受损的c-Cbl募集也与CSF-1 R下调和贩运的动力学变化相关。CSF-1介导的FD-Fms细胞的分化和下游信号事件的激活也在稳定表达显性阴性SHBG-2的细胞中增强。总之,这些结果表明,SHBG-2在CSF-IR信号传导的c-Cbl依赖性下调中起作用。
Src-like adaptor protein 2 (SLAP-2) is a hematopoietic adaptor protein previously implicated as a negative regulator of T-cell antigen receptor (TCR)-mediated signaling. SLAP-2 contains an SH3 and an SH2 domain, followed by a unique carboxyl-terminal tail, which is important for c-Cbl binding. Here we describe a novel role for SLAP-2 in regulation of the colony-stimulating factor 1 receptor (CSF-1R), a receptor tyrosine kinase important for growth and differentiation of myeloid cells. SLAP-2 co-immunoprecipitates with c-Cbl and CSF-1R in primary bone marrow-derived macrophages. Using murine myeloid cells expressing CSF-1R (FD-Fms cells), we show that SLAP-2 is tyrosine-phosphorylated upon stimulation with CSF-1 and associates constitutively with both c-Cbl and CSF-1R. In addition, we show that expression of a dominant negative form of SLAP-2 impairs c-Cbl association with the CSF-1R and receptor ubiquitination. Impaired c-Cbl recruitment also correlated with changes in the kinetics of CSF-1R down-regulation and trafficking. CSF-1-mediated differentiation of FD-Fms cells and activation of downstream signaling events was also enhanced in cells stably expressing dominant negative SLAP-2. Together, these results demonstrate that SLAP-2 plays a role in c-Cbl-dependent down-regulation of CSF-1R signaling.
DOI: --
发表时间: 1986-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
L. Guilbert;E. Stanley
通讯作者: L. Guilbert;E. Stanley
DOI: 10.1096/fasebj.12.1.35
发表时间: 1998
期刊: FASEB journal : official publication of the Federation of American Societies for Experimental Biology
影响因子: --
作者:
D. Mochly‐Rosen;A. Gordon
通讯作者: D. Mochly‐Rosen;A. Gordon
骨髓 FDC-P1 细胞中表达的鼠巨噬细胞集落刺激因子受体介导的增殖和分化信号的解偶联。
DOI: --
发表时间: 1995
期刊: Cell growth & differentiation : the molecular biology journal of the American Association for Cancer Research.
影响因子: --
作者:
Bourette,RP;Myles,GM;Carlberg,K;Chen,AR;Rohrschneider,LR
通讯作者: Rohrschneider,LR
DOI: 10.1089/jmf.2019.4414
发表时间: 2019-11-26
影响因子: 2.4
作者:
Wang, Zheng;Liang, Yanni;Liu, Li
通讯作者: Liu, Li
DOI: 10.1126/science.286.5438.309
发表时间: 1999-10-08
期刊: SCIENCE
影响因子: 56.9
作者:
Joazeiro, CAP;Wing, SS;Liu, YC
通讯作者: Liu, YC