Syndecan-regulated receptor signaling.

Syndecan-regulated receptor signaling.
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DOI:
10.1083/jcb.149.5.995
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发表时间:
2000-05-29
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Rapraeger AC
Rapraeger AC
中科院分区:
其他
文献类型:
--
作者:
Rapraeger AC

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多配体聚糖是在所有粘附细胞上表达的跨膜硫酸乙酰肝素(HS)蛋白聚糖(Bernfield等人,1999年; Rapraeger和Ott,1998年)。作为一个四个家族,它们具有多种功能,包括参与细胞-细胞粘附、调节HS结合生长因子的信号传导以及组织细胞-基质粘附和信号传导。本期《细胞生物学杂志》发表的一篇论文(Iba等人,多配体蛋白聚糖核心蛋白具有几个重要的结构域,尽管关于它们各自的功能仍有许多有待了解(图1; Bernfield等,1999年; Rapraeger和Ott,1998年)。多配体蛋白聚糖可以与几种类型的受体起作用。它们在细胞-细胞粘附位点表达(图2A),例如,上皮细胞上的多配体蛋白聚糖-1和神经元突触中的多配体蛋白聚糖-2。在此,它们与PDZ蛋白CASK和细胞骨架蛋白4.1以及与钙粘蛋白连接的β-连环蛋白一起表达(Cohen等人,1998; Hsueh和Sheng,1999)。所有这三种细胞质蛋白都具有核功能,并且CASK与多配体蛋白聚糖的结合最近已显示改变其核靶向(Hsueh et al.,2000)。这表明钙粘蛋白和多配体蛋白聚糖的协同调节可能在细胞核中具有重要的结果。
The syndecans are transmembrane heparan sulfate (HS) proteoglycans expressed on all adherent cells (Bernfield et al., 1999; Rapraeger and Ott, 1998). A family of four, they have diverse functions ranging from participation in cell–cell adhesion, regulation of the signaling of HS binding growth factors, and organization of cell–matrix adhesion and signaling. A paper published in this issue of The Journal of Cell Biology (Iba et al., 2000) provides novel information on the specificity of syndecans in carrying out the latter function.The syndecan core proteins have several important domains, although much remains to be learned about their respective functions (Fig. 1; Bernfield et al., 1999; Rapraeger and Ott, 1998). The syndecans may function with several types of receptors. They are expressed at cell–cell adhesion sites (Fig. 2 A), eg, syndecan-1 on epithelial cells and syndecan-2 in neuronal synapses. Here, they are expressed with the PDZ protein CASK and the cytoskeletal protein 4.1, and ß-catenin linked to cadherins (Cohen et al., 1998; Hsueh and Sheng, 1999). All three of these cytoplasmic proteins have nuclear functions and CASK binding to syndecans has been shown recently to alter its nuclear targeting (Hsueh et al., 2000). This suggests that coregulation of cadherins and syndecans may have important outcomes in the nucleus.
DOI: 10.1083/jcb.132.6.1209
发表时间: 1996-03
期刊: The Journal of cell biology
影响因子: --
作者:
Lebakken CS;Rapraeger AC
通讯作者: Rapraeger AC
DOI: 10.1523/jneurosci.19-17-07415.1999
发表时间: 1999-09-01
影响因子: 5.3
作者:
Hsueh, YP;Sheng, M
通讯作者: Sheng, M
人桶/lin-2结合Syndecan-2和蛋白4.1,并定位在上皮细胞的基底外侧膜上。
DOI: 10.1083/jcb.142.1.129
发表时间: 1998-07-13
影响因子: 7.8
作者:
Cohen, AR;Wood, DF;Marfatia, SM;Walther, Z;Chishti, AH;Anderson, JM
通讯作者: Anderson, JM
DOI: 10.1016/1074-5521(95)90025-x
发表时间: 1995-10-01
影响因子: --
作者:
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通讯作者: RAPRAEGER, AC
DOI: 10.1016/s0955-0674(98)80038-0
发表时间: 1998-10-01
影响因子: 7.5
作者:
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通讯作者: Ott, VL